52results about How to "Avoid shearing" patented technology

The invention discloses a vapor chamber having support posts with an inner-sintering structure. The vapor chamber is characterized in that: upper cover plate sintering capillary wicks and lower cover plate sintering capillary wicks are arranged in a cavity between an upper cover plate and a lower cover plate, a plurality of support posts and a plurality of stress absorption rings having a sinking structure are distributed at the inner bottom of the lower cover plate, the upper cover plate sintering capillary wicks and the lower cover plate sintering capillary wicks are provided with a plurality of mounting holes through which the support posts penetrate; and a plurality of bosses which are naturally formed during sintering, and correspondingly matched with sinking positions of the stress absorption rings are distributed on the lower surface of the lower cover plate sintering capillary wicks. The vapor chamber has the advantages that: the stress absorption rings of the vapor chamber can effectively absorb deformation; the regional support post distribution eliminates the influence of the support posts on the enhanced boiling structure of the lower cover plate; capillary porosity wicks in the support posts shorten the refluxing path of liquid working medium in condensing section, separate raising vapor generated by enhanced boiling and reflux falling liquid working medium in the vapor chamber, avoid a shearing effect generated by the contact between a vapor interface and a liquid working medium interface and improve heat-transfer capability.

The invention relates to a vascular clamp which is a V-shaped or U-shaped structure formed by an upper arm and a lower arm. The head of the lower arm is provided with a guide face which can generate the horizontal displacement under the vertical pressure. The head of the upper arm and the head of the lower arm are provided with self-locking structures which are matched with each other and can restrict the vertical relax movement. When a pair of appliers is closed, the upper arm and the lower arm of the vascular clamp begin to close, the head of the upper arm slides along the guide face of the head of the lower arm under the vertical pressure to generate the horizontal displacement. Under the combined effect of the restoring force resulting from the horizontal displacement of the upper arm and the lower arm and the restoring force resulting from the horizontal displacement of the pliers arms of the appliers, the self-locking structures which are matched with each other and can restrict the vertical relax movement on the head of the upper arm and the head of the lower arm slide and lock, therefore realizing the closing of the upper arm and the lower arm. The vascular clamp not only has strong clipping force, but also avoids cropping function for the organization in the closing process.

The invention recites a filtration tank including a chamber for holding liquid to be filtered, the filtration tank includes a fluid inlet for providing liquid to the chamber. The filtration tank further includes a fluid outlet and at least one filter block disposed between the inlet and the outlet, wherein the at least one filter block includes a porous cap having an average pore size of up to about 250 microns.

The invention discloses a diamond wire saw connecting device. A wire saw is used for cutting stones, concrete, ceramic tiles, ceramics, some metals and nonmetals. A joint coupling is provided with a hollow cavity; cavity mouths at two ends of the hollow cavity are respectively placed at the head end and the tail end of a steel wire rope, and are in butt joint with and compress the joint coupling; when the joint coupling is compressed, two ends of the joint coupling are compressed by special pincers, but the middle part and two side edges of the joint coupling are not compressed, and then enlarging mouths on two sides of the joint coupling are filled with rubber-plastic elastic bodies, and the rubber-plastic elastic bodies wrap the steel wire rope near the port of the joint coupling to avoid the condition that the wire saw frequently varies in the moving line from a straight line to a curved line, resulting in a shearing function of inner circle corners on two sides of the joint coupling to the steel wire rope. The connecting device has the advantages of reasonable structure, long service life, and the like.

The invention relates to an adjustable hydraulic cyclone coagulation pipe; wherein, a dosing tube, 3 to 6 adjustable cyclone vortex generators and 2 to 5 adjustable vortex generators are sequentially arranged in the cavity of the pipe body in the direction of water flow; the adjustable cyclone vortex generators and the adjustable vortex generators all comprise a plurality of fan-shaped blades which have the same shape, and one end of each fan-shaped blade is moveably connected with a central connecting ball and the other end is fixedly connected with a corresponding rotating handle which is provided with a chute by an external rotating shaft; the external side wall of the pipe body is provided with a rotating ring which can rotate around the circumference of the pipe body; a sliding block which is arranged at the rotating ring is moveably connected with the chute arranged at the corresponding rotating handle; a handle is fixedly arranged at the rotating ring. The cyclone coagulation pipe can be used in water supply purification and the treatment of domestic sewage and industrial wastewater and can be flexibly adjusted according to actual conditions of quality and loading of incoming water, the amount and kinds of added reagents, the treatment process of waterworks, etc. The coagulation pipe not only can strengthen the coagulation but also can be adjusted according to the changes of operation parameters.

A physical restraining pad assembly including a pad constructed of a flexible, breathable material of a size and shape to cover the body of an individual with arms outstretched. An outer mesh covering encloses the pad. A plurality of spaced handles are positioned on a back side of the pad for use by an attendant. The pad has a viewing window of a size and shape to allow the attendant to see through the pad for observing the individual being restrained. Complementary touch fasteners on a pair of such pads may be used by two attendants to restrain an individual between them. A single pad with complementary touch fasteners on opposing sides may be used to restrain an individual by wrapping the individual within the pad with the complementary touch fasteners engaged with each other.

Disclosed is a high-voltage line outlet structure of an electric reactor at a voltage of less than or equal to 500kV. The high-voltage line outlet structure comprises a high-voltage phase line and a sleeve connected with the line outlet end of the high-voltage phase line, wherein the high-voltage phase line comprises a high-voltage phase line horizontal part and a high-voltage phase line vertical part; the outside of the line outlet end of the high-voltage phase line vertical part is nested with a voltage-sharing ball insulating assembling part; the outside of the voltage-sharing ball insulating assembling part is nested with an insulating paper cylinder assembling part; an electrified part of the sleeve is nested in the insulating paper cylinder assembling part, and the lower end of the insulating paper cylinder assembling part extends to a position above the high-voltage phase line horizontal part; and the high-voltage phase line and the insulating paper cylinder assembling part are both fixed in an oil tank body through a lead supporting structure. The invention provides the line outlet structure of the electric reactor, and the line outlet structure is suitable for the electric reactor at the voltage of less than or equal to 500kV; the line outlet mechanical strength, the electrical performance and the temperature rise requirement can be satisfied, the shock resistance of parallel electric reactors can be improved, and long-term safe operation of the electric reactor can be ensured.

The invention discloses a bolt connection device. According to the device, based on an existing bolt connection structure, two layers of conical pin sleeves are added. The conical pin sleeves not onlycan withstand the shear force, but also can increase resistance to loosening in the axial direction. During bolt connection, the pin sleeve structure is adopted and is capable of transmitting rotational torque as compared to a common bolt connection structure. Bolts are protected against the shear force. The axial resistance to loosening of the bolt connection is improved, so that the axial connection of connected parts is reliable. By the adoption of the bolt connection device, the cost is low, and the overall maintenance-free purpose is realized. A shear pin, a shear key and a terminal facetooth structure are high in processing cost, it is difficult to disassemble and assemble a shear pin structure, and the maintenance and repair cost is high. The novel bolt connection mechanism can realize the overall maintenance-free purpose.

The invention discloses a vapor chamber having support posts with an inner-sintering structure. The vapor chamber is characterized in that: upper cover plate sintering capillary wicks and lower cover plate sintering capillary wicks are arranged in a cavity between an upper cover plate and a lower cover plate, a plurality of support posts and a plurality of stress absorption rings having a sinking structure are distributed at the inner bottom of the lower cover plate, the upper cover plate sintering capillary wicks and the lower cover plate sintering capillary wicks are provided with a plurality of mounting holes through which the support posts penetrate; and a plurality of bosses which are naturally formed during sintering, and correspondingly matched with sinking positions of the stress absorption rings are distributed on the lower surface of the lower cover plate sintering capillary wicks. The vapor chamber has the advantages that: the stress absorption rings of the vapor chamber can effectively absorb deformation; the regional support post distribution eliminates the influence of the support posts on the enhanced boiling structure of the lower cover plate; capillary porosity wicks in the support posts shorten the refluxing path of liquid working medium in condensing section, separate raising vapor generated by enhanced boiling and reflux falling liquid working medium in the vapor chamber, avoid a shearing effect generated by the contact between a vapor interface and a liquid working medium interface and improve heat-transfer capability.

A 750KV shunt reactor high-voltage outlet structure is disclosed, which includes an elevating seat, L-shaped fixed blocks are fixedly installed in positions close to the two sides at the bottom of theelevating seat, the L-shaped fixed blocks are provided with a plurality of fixed holes, a plurality of supporting blocks are connected with the middle part of the elevating seat, and a plurality of wire clips are fixedly installed on the surface of the elevating seat, the inside of the wire clip is provided with a threaded groove, the inside of the threaded groove is threadably connected with a threaded pin, the end of the threaded pin is provided with a cushion block, and the top of the elevating seat is connected with an insulating paper cylinder through a fastener. The invention disclosesa 750KV shunt reactor high-voltage outlet structure, which is provided with the insulated paper cylinder, an insulated voltage-sharing ball, the elevating seat, the L-shaped fixed blocks and the support blocks, can ensure the electrical strength of the 750kV outlet line, ensure that the outlet line structure and the sleeve are installed on the oil tank body, improve the seismic resistance of the 750kV shunt reactor, and bring better application prospects.

The invention discloses an aluminum alloy frame and a ceramic thin plate curtain wall utilizing the aluminum alloy frame. The ceramic thin plate curtain wall comprises a ceramic thin plate and a rigid framework adhered on the back surface of the ceramic thin plate for supporting and connecting, wherein the periphery of the adhesion layer of the rigid framework and the ceramic thin plate is arranged to a serging frame structure wrapping the periphery of the ceramic thin plate; an aluminum alloy reinforcement frame is further arranged on the back surface of the ceramic thin plate, the two ends of the aluminum alloy reinforcement frame are fixedly connected with the inner peripheral wall of the rigid framework for dividing the rigid framework into a plurality of closed inner frame structures; and the end parts of the rigid framework and the aluminum alloy reinforcement frame are fixedly connected through aluminum alloy connecting elements. According to the ceramic thin plate curtain wall provided by the invention, the serging design matched with a rigid cushion block can support the plate to avoid the shearing function applied on structural adhesive caused by self weight, prevent the plate from dropping caused by adhesive aging and improve the safety and durability of the ceramic thin plate curtain wall; and the end parts of the rigid framework and the aluminum alloy reinforcement frame are fixedly connected through matched aluminum alloy connecting elements, so that the production efficiency is higher and the locating precision is better.

The invention relates to the technical field of pruning devices, in particular to a fruit tree pruning device. The fruit tree pruning device comprises a movable base, a height and angle adjusting device, a pruning transmission device and a pruning knife, wherein the pruning transmission device comprises a transmission box, a worm gear, a knife frame, a knife shaft, a connecting rod, a spring, a sliding push plate, a sliding block, a second motor and a reciprocating lead screw, the right end of the transmission box is fixedly connected with the worm gear, the left end of the transmission box is fixedly connected with the knife frame, the inner side of the worm gear is fixedly connected with the knife shaft, the outer side of the knife shaft is rotationally connected with the pruning knife, the right end of the pruning knife is rotationally connected with the connecting rod through hinges, and the right end of the connecting rod is rotationally connected with the sliding push plate. According to the fruit tree pruning device, through the arranged pruning transmission device, the sliding push plate slides in the transmission box in a reciprocating mode, so that the connecting rod drives the pruning knife to be opened and closed, automatic pruning of fruit trees is achieved, manpower is saved, and the pruning effect of the fruit trees is guaranteed.

The invention provides a cell centrifuging device and a cell centrifuging, cleaning and culturing method. The cell centrifuging device comprises a centrifugal cup and one or more liquid pushing plates, wherein the centrifugal cup is provided with a rotation axis and is used for being connected with a rotation driving mechanism and rotating around the rotation axis under the driving of the rotation driving mechanism so as to be used for centrifuging a blood sample contained in the centrifugal cup; the one or more liquid pushing plates are arranged in the centrifugal cup; and under the condition that the centrifugal cup rotates, the liquid pushing plates are used for pushing the blood sample to synchronously rotate in the rotating direction which is the same as the rotating direction of the centrifugal cup. According to the cell centrifuging device and the cell centrifuging, cleaning and culturing method provided by the invention, the liquid pushing plates are arranged in the centrifugal cup, and the blood sample in the centrifugal cup rotates synchronously with the centrifugal cup under the pushing action of the liquid pushing plates in the centrifugal cup process, so that cells in the blood sample are prevented from being sheared in the centrifugal process, and shear damage to the cells in the centrifugal process is reduced.

The invention relates to a fast biofilm formation device of a suspended filler and a sequencing batch biofilm reactor. The biofilm formation device comprises a filler basket formed by a skeleton and a wall net, wherein two baffle plates which are arranged in an inclined way are symmetrically distributed at the bottom of the filler basket; a V-shaped splash guard which opens downwards is arranged below the filler basket; a plurality of biofilm formation devices are respectively arranged in gaps of aeration discs of a biological reaction tank, so as to form the sequencing batch biofilm reactor. The fast biofilm formation device of the suspended filler in the invention is simple and reasonable in structure, can effectively avoid the shearing action to the biofilm on the surface of the filler by the aeration and reduce the washing action of water flow to the biofilm, thereby being beneficial to adhering, growing and updating of activated sludge; the sequencing batch biofilm reactor with the fast biofilm formation device of the suspended filler is simple in technological process, convenient in operation and using, convenient in daily overhauling and maintenance, good in purifying effect on waste water and sewage, high in purifying speed and easy to popularize.

The invention discloses a glue spraying device. The glue spraying device comprises a cam, wherein the cam is connected with the left end of a sliding rod switch; the right side of the sliding rod switch is connected with a compression spring; under the combined action of the cam and the compression spring, the reciprocating rectilinear movement of the sliding rod switch is controlled; the sliding rod switch is movably arranged in a glue cylinder; an upper channel is formed in the upper part of the glue cylinder, and a lower channel is formed in the lower part of the glue cylinder; the sliding rod switch is movably arranged between the upper channel and the lower channel; in the reciprocating rectilinear movement process of the sliding rod switch, when a connecting hole of the sliding rod switch directly faces the upper channel and the lower channel, the connecting hole connects the upper channel with the lower channel, so that glue spraying is realized; when the sliding rod switch moves for a certain distance, the connecting hole of the sliding rod switch is staggered from the upper channel and the lower channel, the upper channel is disconnected from the lower channel, and glue spraying is stopped. A complicated rotary mechanism is replaced by a simple rectilinear mechanism. Due to the fact that the rectilinear movement distance is quite small and produced heat is quite small, a cooling device does not need to be used, so that energy is saved. The invention further discloses a glue spraying method.

The invention relates to a pump body for a pump (1), which is provided with a wet running motor and comprises a seat (12) for the wet running motor axis arranged on the inlet side. Said pump is characterised in that the seat (12) is fixed to the body (2) by means of a single supporting arm (13). The pump provided with the a wet running motor and a water supply household appliance are also disclosed.

The invention discloses a combined type steel rope net system. The system includes a steel rope net wrapping the outer surface of a membrane building, and the steel rope net is composed of multiple steel rope net pieces; each steel rope net piece is formed by intersecting steel ropes in a scissor shape, a joint locking buckle structure is arranged on each junction of the steel ropes, and universalconnection structures are arranged on the junctions of the steel ropes between every two steel rope net pieces; each joint locking buckle structure includes an upper pressing plate, a lower pressingplate and a fastening piece. Each universal connection structure includes an O-shaped ring and a lantern ring connected to the end of the corresponding steel rope, the O-shaped rings are arranged at the junction centers where the steel ropes are connected with one another, and the lantern ring on each steel rope is connected to the corresponding O-shaped ring through a detachable buckle. Fast installation of the steel rope net system on the outer surface of the membrane building is achieved, influences caused by the differences between a design and an actual installation condition on the installation and usage of the steel rope net system are avoided, and the combined type steel rope system is convenient to use and high in universality.

The invention provides an automobile tailboard, and belongs to the technical field of unloading equipment, and solves the problem that in the prior art the automobile tailboard cannot meet the strength requirement and light weight design simultaneously. The automobile tailboard with the improved structure comprises a base board and a surface board. The surface board covers the base board and is fixedly connected with the base board. The automobile tailboard is characterized in that several reinforcing horizontal boards and several reinforcing longitudinal boards are integrally molded on the upper surface of the base board. Both the reinforcing horizontal boards and reinforcing longitudinal boards are in flattened strip shapes and are perpendicularly arranged with the surface board. The reinforcing horizontal boards and reinforcing longitudinal boards crisscross with each other to form several filling convex cavities. Each filling convex is filled with plastic filler. The automobile tailboard can achieve the light weight design of the tailboard on the precondition of meeting the strength requirement.

The invention discloses a multidirectional displacement measuring device, which relates to the technical field of displacement measuring devices, and comprises a first connecting piece, a second connecting piece, an angle measuring assembly and a displacement meter, wherein the first connecting piece and the second connecting piece are fixedly connected to a measured object. The angle measuring assembly is fixedly connected with the other end of the displacement meter, when a structure is displaced, the displacement amount generated in the length direction of the displacement meter can be obtained through the displacement meter, and the rotating angles of the displacement meter on the vertical plane and the horizontal plane are obtained through the first angle sensor and the second angle sensor. Displacement of the structure in multiple directions is obtained through simple conversion, and multidirectional displacement measurement is achieved. Because the other end, connected with theangle measurement assembly, of the displacement meter has degrees of freedom in the vertical direction and the horizontal direction, when the displacement direction of the measured structure object isinconsistent with the length direction of the displacement meter, the other end of the displacement meter can change the spatial position under the displacement effect of the structure object; and shearing force damaging the displacement meter is prevented from being generated on the displacement meter.

The invention provides an automobile tailboard, and belongs to the technical field of unloading equipment, and solves the problem that in the prior art the automobile tailboard cannot meet the strength requirement and light weight design simultaneously. The automobile tailboard with the improved structure comprises a base board and a surface board. The surface board covers the base board and is fixedly connected with the base board. The automobile tailboard is characterized in that several reinforcing horizontal boards and several reinforcing longitudinal boards are integrally molded on the upper surface of the base board. Both the reinforcing horizontal boards and reinforcing longitudinal boards are in flattened strip shapes and are perpendicularly arranged with the surface board. The reinforcing horizontal boards and reinforcing longitudinal boards crisscross with each other to form several filling convex cavities. Each filling convex is filled with plastic filler. The automobile tailboard can achieve the light weight design of the tailboard on the precondition of meeting the strength requirement.

The invention discloses a variable form combination locknut, and belongs to the field of fasteners. The variable form combination locknut comprises a female nut (1) and a male nut (3), wherein an inverted-cone-shaped countersunk hole (2) is formed in one end surface of the female nut(1), and an inverted-cone-shaped frustum body (4) is arranged on one end surface of the male nut (3). The surface ofthe inverted-cone-shaped countersunk hole (2) is of an internal conical or internal elliptical conical structure, and a thread of the female nut (1) is coaxial with the axis of the inverted-cone-shaped countersunk hole. The inverted-cone-shaped frustum body (4) is of an inverted elliptical frustum or an inverted cone frustum structure, and a thread of the male nut (3) is coaxial with the axis ofthe inverted-cone-shaped frustum body. According to the variable form combination locknut, the locking force of the male nut on a bolt is improved, a thread is prevented from loosening, the shearing effect on the bolt can be avoided, and the service life of the bolt is prolonged; and the defects such as uneven force and large thread clearance of a nut assembly can be overcome. The variable form combination locknut relates to a non-standard locknut assembly.

A heat pipe cooling device for LED street lamps with a centrifugal condenser fundamentally solves the problem that existing heat pipe radiators cannot fully exert the heat dissipation effect due to structural limitations. The technical points are: including a centrifugal condenser; the centrifugal condenser includes a tubular body, upper and lower end covers, and heat dissipation fins uniformly distributed on the outer wall of the tubular body; a heat dissipation cavity is arranged inside the base plate, and the heat dissipation cavity passes through the air intake pipe It is connected to the upper end of the centrifugal condenser, and the inlet pipe is connected to the inner wall of the tubular body of the centrifugal condenser along the tangential direction, and the centerline of the end of the inlet pipe connected to the tubular body and the horizontal plane form an angle of 0~-15° , the lower end of the centrifugal condenser is connected back to the heat dissipation chamber by the liquid return pipe; the air inlet pipe, the liquid return pipe, the centrifugal condenser and the heat dissipation chamber are sealed and connected, and the heat dissipation chamber is evacuated and filled with working fluid by the liquid filling pipe. The invention has the characteristics of fast heat dissipation speed, large heat dissipation capacity, no restriction on the size of the lamp housing, low cost and the like in the heat dissipation area.

The invention discloses a pole plate convex runner structure, a battery metal pole plate and a hydrogen fuel cell bipolar plate, the hydrogen fuel cell bipolar plate comprises two battery metal pole plates and a membrane electrode, each battery metal pole plate comprises a pole plate convex runner structure, each pole plate convex runner structure comprises a plate body, the plate body is provided with an active region, and the active region is provided with an active region; a plurality of first step bosses are convexly arranged on the active region on the cooling liquid flow field side, and a first step groove is formed between every two adjacent first step bosses; the plurality of first step bosses form a plurality of second step grooves on the gas field side, and the plurality of first step grooves form a plurality of second step bosses on the gas field side. The air field side and the cooling liquid flow field side are respectively provided with a flow channel with a convex stepped groove-shaped section, the notch of the stepped groove can be enlarged, and the sectional area of the cooling liquid flow channel is increased and the air diffusion rate and the cooling liquid flow resistance are balanced within a certain range under the condition that the aperture ratio of the flow channel is ensured.

The invention discloses a reactor for realizing static culture and continuous growth of aerobic filamentous biofilm, which comprises a feed tank, a peristaltic pump, an aeration pump, a gas flow meter, a reaction tank, a carrier bracket, an upper partition, an upper conduit, Vessel carrier, lower baffle, downcomer, support, microporous aeration tube, enclosure; the gas pumped by the present invention enters the microporous aeration tube through the adjustment of the gas flow meter to form air bubbles, enclosure and support The bubbles are gathered, and the bubbles pass through the hollow channel formed by the downcomer, the vascular carrier, and the upper catheter, which promotes and drives the waste water to flow upward through the inside of the vascular carrier, avoiding the direct impact of the air bubbles and waste water on the aerobic filamentous biofilm, and realizing the reactor The aerobic filamentous biofilm in the vascular carrier obtains oxygen and nutrients from the inside of the vascular carrier, thereby avoiding the aging and death of the filamentous biofilm close to the vascular carrier in the reactor due to hypoxia and nutrition, and solving the problem of filamentous The problem of complete detachment of biofilms from vascular supports.

The invention discloses a wall tie piece assembly capable of eliminating a construction error. The assembly comprises an inner mantle fiber piece pre-buried into concrete in the direction perpendicular to the concrete vertical face to be cast, three blind holes are formed in the inner mantle fiber piece in the axial direction of the inner mantle fiber piece, the axis direction of the inner mantlefiber piece is the direction perpendicular to the concrete vertical face to be cast, the axis of one blind hole is located at the central axis of the inner mantle fiber piece, the axes of the other two blind holes are symmetrically arranged at the upper and lower sides of the central axis of the inner mantle fiber piece, the hole walls of the three blind holes are sequentially provided with unthreaded holes and inner threaded holes connected with the unthreaded holes from exterior to interior, the inner threaded holes are used for being in threaded connection with an outer threaded section ofwall tie pieces to be connected, the length of the inner threaded holes is two times the diameter of the wall tie pieces, the inner diameter of the unthreaded holes is consistent with the diameter ofthe smooth section of the wall tie pieces, the diameter of the inner threaded holes is 0.5 mm smaller than the inner diameter of the unthreaded holes, and through holes running through the inner mantle fiber piece are formed in the inner mantle fiber piece at the rear ends of the blind holes. By adopting the assembly, the wall tie pieces are prevented from being sheared or broken.

The invention relates to a transformer heat dissipation device which comprises a fin shell and an oleophobic coating. A sealing ring is arranged above the exterior of the fin shell, a solar panel lifting assembly is fixed to one side of the exterior of the fin shell, and the oleophobic coating is located on the inner wall of the fin shell. The device has the beneficial effects that according to the transformer cooling device, oil liquid can pass through the filtering assembly when pumped back, a cylindrical filtering net in the filtering assembly can filter the oil liquid and remove impurities, so that the purity of the oil liquid is improved, when a pin rod is bounced into a fin type auxiliary tank body hole, a fin type auxiliary tank body and a fin type main tank body are connected and installed, the fin-type auxiliary tank body can be disassembled by pulling up a pin rod, later maintenance and repair are facilitated, an electromagnetic valve is closed, the two ends of the filter assembly are closed, the fin-type auxiliary tank body can be disassembled to replace a cylindrical filter screen under the condition that the transformer heat dissipation device is not shut down, a second flow meter can monitor the flow of the filter assembly, and when the flow of the filter assembly is abnormal, the blockage of the cylindrical filter screen can be known.

The invention relates to a fiberglass reinforced wood-plastic composite material and a preparation method thereof. The fiberglass reinforced wood-plastic composite material is mainly prepared from fiberglass, waste plastics, plant fibers and a regulator, wherein the mass ratio is (5 to 30): (30 to 60): (0 to 15): (20 to 40), the fiberglass adopts the fiberglass coated with plastics, the regulator is one or more of PP, PE, PVC, PP-g-MAH, PE-g-MAH, EVA-g-MAH. The preparation method of the material comprises the following steps: coating the fiberglass, banburying, producing powder, hot pressing, and molding. The fiber coating treatment can effectively solve the interface bonding problem of the fiberglass with wood plastics, so that the strength of a product is improved, the consumption of the waste plastics and wood plastics in the wood plastics is greatly increased, the length of the added fiberglass is not limited due to the hot pressing molding, and the reinforcing effect of the fiber is sufficiently realized.

The invention discloses an efficient coal underground gasifier and a construction method thereof. The efficient coal underground gasifier includes an igniting channel, a gas collection channel, gas inlet channels, and a gas outlet channel that are arranged at a quadrilateral coal layer block, the horizontal distance of the gas outlet channel at the edge of the quadrilateral coal layer block from the gas collection channel is more than 10m, a backward combustion method is adopted to expand the cross section of the gas collection channel to be more than 2*2m<2>, and the plurality of gas inlet channels spacing at a certain distance are communicated with the expanded gas collection channel at the lower side to realize gas collection; and when the fire zone working face in the gas collection channel retreats to the vicinity of an outlet hole, the fracturing and reverse fire penetration combustion are carried out at the hole to communicate the gas outlet channel and the gas collection channel. The efficient coal underground gasifier can realize the parallel gasification of the plurality of gas inlet channels, so that the productivity of the gasifier is improved. By means of the methods of backward combustion and reverse penetration, the construction period of the gasifier is shortened. A gas outlet system consisting of vertical boreholes is arranged outside the stress concentration zone to improve the stability of the gas outlet system.

The invention belongs to the technical field of cable fixing, and particularly relates to a cable fixing and protecting device for water conservancy and hydropower engineering. The device comprises a vertical plate, a mounting plate fixedly connected to the upper part of the right end surface of the vertical plate, a fixing plate fixedly connected to the right end surface of the mounting plate, buffer devices uniformly and fixedly connected to the upper part of the vertical plate and the end surface opposite to the fixing plate, the opposite end faces of the left buffer device and the right buffer device are fixedly connected with a rectangular frame, a moving mechanism is arranged in an inner cavity of the rectangular frame, a lower clamping block is fixedly connected to the upper portion of the moving mechanism, an upper clamping block is arranged on the upper portion of the lower clamping block, locking pieces penetrate through the left side and the right side of the upper end face of the upper clamping block, the tail end of each locking piece penetrates and extends to the left side and the right side of the inner cavity of the lower clamping block, the upper portion of the inner cavity of the upper clamping block is provided with a locking device, and the lower end face of the rectangular frame is evenly and fixedly connected with buffering sliding devices. The cable fixing and protecting device is simple in structure and convenient to operate and effectively prolongs the service life of the cable.