33results about How to "Reduce the chance of friction" patented technology

The invention discloses an easy cleaning extrusion type juicer which comprises an engine base, a motor, a juice collecting chamber, an extruding and crushing part and a filtering part, wherein the extruding and crushing part comprises a push-in screw and an extrusion cylinder matched with the push-in screw. The extrusion cylinder is arranged in the juice collecting chamber, and the filtering part is arranged on the lower part of the extrusion cylinder. The filtering part is characterized in comprising grids, and scum juice filtering gaps are arranged between the grids. The easy cleaning extrusion type juicer of the invention has the advantages that the size of the scum juice filtering gaps can change according to the size of the material under the action of the push-in screw to the material, the juice extrusion rate is high, so that the juicer is especially suitable for lone-term material feed; the juicer is easy to clean after being used, the extruded fruit and vegetable juice has less foam, and the inherent colour and taste of the fruit and vegetable juice can be kept to the maximum extend.

The invention discloses a traditional Chinese medicine composition for treating a bone disease. The traditional Chinese medicine composition comprises the following components according to the weight unit of 20-30g of saffron crocus, 50-60g of lucid ganoderma, 10-20g of nux vomica, 30-40g of root of bidentate achyranthes, 20-30g of radix rubiae, 50-60g of herba pyrolae, 30-40g of herba epimedii, 50-60g of lycopodium clavatum, 20-30g of liquorice, 20-30g of garden balsam stem, 10-20g of radix sophorae flavescentis, 60-70g of silky ant, and 5000-6000g of ginger. The traditional Chinese medicine composition is externally used, and can be used for suffocating, dipping, smearing and scrubbing. Each component can be directly smeared and treated on the full body after being crushed, and then coated by a preservative film after being smeared. The traditional Chinese medicine composition has the effects of promoting blood circulation and regulating qi, strengthening tendons and bones, dissipating blood stasis and activating blood circulation, clearing and activating the channels and collaterals, eliminating stagnation and dredging blood stasis, is free of damage to a human body, free of pain, wide in medicinal herb source, and free of toxic and side effects, and can effectively treat the bone disease. 122 sufferers in all are treated, the effective rate is 93.6% and the good rate is 89.4%.

The invention provides a connecting mechanism of solid wood floors. The solid wood floors comprise floor bodies. The connecting mechanism comprises tenons and mortises, wherein the tenons and the mortises are mutually buckled and machined on the two sides in the length direction of the floor bodies. The tenons are provided with first convex blocks, second convex blocks and third convex blocks which protrude out in the width and thickness directions of the floors correspondingly, and the mortises are provided with first grooves, second grooves and third grooves which are sunken in the width andthickness directions of the floors correspondingly. The first convex blocks and the first grooves are mutually buckled, and expansion gaps exist after tight buckling; the second convex blocks and thesecond grooves are mutually buckled, and expansion gaps exist after tight buckling; and the third convex blocks and the third grooves are mutually buckled, and expansion gaps exist after tight buckling. Conical gaps are formed in the upper corner areas of the tenons and the mortises.

The invention discloses an air jet loom weaving method for a polyester cotton core-spun yarn fabric with a polyester filament as a core and cotton fiber wrapped outside polyester, which orderly comprises working procedures such as doubling, twist stabilization after twisting, warping and rebeaming, reeding, loom beam on-hook, adjustment of process parameters and so on. In the working procedure of batch warping, the rebeaming is performed on a sizing machine, and the sizing is not performed; during the reeding after the rebeaming, 50 to 100 percent of harness frame numbers are increased than the prior species according to the warp density; the weft-insertion time is adjusted to ensure that the weft-insertion time of previous group of auxiliary nozzles is longer than that of next group of the auxiliary nozzles and the weft-insertion time is orderly shortened in a step shape, and the entire auxiliary nozzles are synchronously closed at the same angle position. The working procedures after the adjustment effectively solve the problem that the dyeing of the polyester cotton core-spun yarn fabric has color difference after the polyester cotton core-spun yarn fabric is woven on an air jet loom, and ensure that the polyester cotton core-spun yarn fabric can be fully and normally woven on the air jet loom. The weaving efficiency can reach 96 percent, the rate of first-grade products when getting off the loom can reach more than 93 percent, woven cloth has qualified various indicators and fully satisfies the normal production of the dyeing and finishing, and no quality problem exists after the dyeing.

The invention discloses a motor housing with good protective performance. The structure comprises a housing, a heat dissipation fin, junction box, circulating cooling pipes and support legs are mounted on the housing, the heat sink is fixedly connected with the outer surface of the housing, the junction box is fixedly connected with the upper part of the housing, The circulating cooling pipe is fixedly connected with the outer surface of the housing, the support leg is movably connected with the lower surface of the housing, and the support leg is provided with a fixing hole, a built-in groove, a vibration damping spring and a limiting plate, the fixing hole is located at the middle of the support leg, and the built-in groove is located at the inner surface of the support leg. The invention can effectively reduce the transmission effect of the vibration amplitude in the working process of the motor through the increase of the vibration damping spring and the position limiting plate, enhance the protection function of the motor housing to the internal parts thereof, reduce the probability of friction between the rotating shaft and the motor housing due to the excessive vibration amplitude, and prolong the service life of the motor.

The invention discloses a down filling machine down filling pipe mechanism with a down filling depth adjusting function, and belongs to the technical field of down filling equipment. The down filling machine down filling pipe mechanism comprises a down filling outer pipe and a down filling inner pipe, the down filling inner pipe is slidably inserted into an inner cavity of the down filling outer pipe, and a threaded sleeve is rotatably mounted on the outer wall of the right side of the down filling outer pipe; the threaded sleeve is arranged on the outer wall of the down filling inner pipe in a sleeving mode, a placing groove is formed in the left end of the down filling inner pipe, an adjusting device is arranged in an inner cavity of the placing groove, in the device, a guide block is pulled rightwards, a pull rod pulls two sets of piston plates rightwards to move rightwards, air in an annular groove is drawn into an air storage groove, and the air pressure in the annular groove is reduced; a sealing ring is shrunk, the contact pressure between the sealing ring and the inner wall of the down filling outer pipe is reduced or the sealing ring does not make contact with the inner wall of the down filling outer pipe, the probability of friction between the down filling outer pipe and the sealing ring is reduced in the moving and adjusting process of the down filling outer pipe, the probability of abrasion of the sealing ring is reduced, and the probability of bending deformation of the sealing ring due to contact friction is also reduced.

A straight-tube-type front shock absorber with high performance comprises a tube body, a piston pipe arranged in the tube body and a front fork pipe arranged on the exterior of the piston pipe in a sleeving mode. A restoration valve is arranged at the lower end of the front fork pipe, a screw plug is connected to the upper end of the front fork pipe in a screwed mode, and a piston head matched with the restoration valve is arranged at the upper end of the piston pipe. The restoration valve, the inner wall of the tube body and the outer wall of the piston pipe define a compression cavity, the inner wall of the front fork pipe, the outer wall of the piston pipe, the piston head and the restoration valve define a restoration cavity, and an oil storage cavity is defined among the screw plug, the inner wall of the front fork pipe and the piston head. A first spring is arranged in the restoration cavity, a second spring is arranged in the oil storage cavity, and a damping hole is formed in one side of the upper portion of the piston pipe. According to the straight-tube-type front shock absorber with the high performance, the buffering function can be ensured while the production cost isreduced, and thus the performance of the straight-tube-type front shock absorber is ensured.

The invention provides a method for printing a mark on a printed circuit board. The method comprises the steps of printing an opaque character block on a substrate, wherein the character block is larger than the profile of the mark; covering the character block with an opaque solder resist layer, wherein the solder resist layer and the character block have a color contrast or contrast characteristic; disposing a window on the solder resist layer for the mark; exposing the character block through the window portion of the solder resist layer to form the shape of the mark. The method prevents the mark form residing at the surface of the printed circuit board so as to greatly reduce the friction probability of the mark and reduce the risk that the mark is de-oiled and is not clear. The invention also provides a printed circuit board manufacturing method which comprises the method for printing the mark, and a printed circuit board manufactured by using the printed circuit board manufacturing method.

The invention discloses a garbage double-shaft crusher main shaft single-side positioning method. According to the assembling method, the single-direction positioning structure is adopted, the structural design for a main shaft assembly is regulated, and therefore it is ensured that two main shaft assemblies can be locked from the same single side when the installation directions are opposite, andtherefore the problems that due to machining error problems of tools and spacer bushes, assembling cannot be performed, the tools are crossed, and friction is caused are solved, meanwhile, tool resistance generated by friction is eliminated, the noise problem generated by friction is eliminated, and the energy efficiency is lost. Meanwhile, the problem of assembling reworking is solved. The method can effectively ensure the effective clearance of 0.1-0.3 MM needed when the crossed tools on double shafts of a crusher are used for shearing, meanwhile, the phenomena that due to machining errors,installing cannot be achieved, tools are abraded, and tool collision is caused can be greatly reduced, meanwhile, the installing and maintaining time is shortened, and the structure is applicable tovarious equipment machines similar to crushers in shear type cross operation.

The invention discloses a loach hatching device and method. The device comprises a barrel-shaped hatching container, and a circular aeration device is installed in the barrel-shaped hatching container; the aeration device and the barrel-shaped hatching container are coaxially arranged, and the diameter of the aeration device is 1 / 3 to 3 / 5 of the diameter of the barrel-shaped hatching container; the aeration device is communicated with an air inlet pipe, and the air inlet pipe is communicated with an air inlet pump and a heater; a tap water pipe is arranged above the barrel-shaped hatching container; a water changing outlet pipe is mounted at the upper part of the barrel-shaped hatching container, and a cleaning outlet pipe is mounted at the bottom of the barrel-shaped hatching container, and a vale is mounted on the cleaning outlet pipe; and a filter cover covers the water changing outlet pipe. According to the invention, the barrel-shaped hatching container is adopted, the coaxial aeration device with a small diameter is arranged, so that the aeration device can push water in the barrel-shaped hatching container to form circulation, the water amount in the container is increased,more loach eggs can be hatched, the temperature of the internal water is easier to maintain, the suspension state of the loach eggs is maintained, and the probability of friction between the eggs andthe container wall is reduced.

The invention discloses a high-efficiency washing method and a high-efficiency washing device for a filter adopting expansive fillers. The structure and working process comprise that: a valve for water inlet, a valve for normal water outlet and a valve for aeration are closed; a water level in the filter is reduced to a washing water level through drainage, wherein the washing water level is lower than a normally working water level; a valve for washing water inlet and a valve for washing aeration at the lower part of the filter are opened and a purification device in the filter is washed by using upward water flow and airflow; and the washing water is discharged from a washing water outlet at the bottom end of a washing water receiving tank outside the top end of the filter. The invention has the advantages that: due to reduction of the water level in the filter, the reduced water level washing reduces pressure needed by a washing water pump and a washing fan and the energy are saved; the reduced water level washing is to reduce the water level in the filter first to provide an expansion area for activated carbon, so that the activated carbon rolls to form friction on the part below the normal water level in the process of washing. Therefore, the biofilm is separated and flows out of the system along with the washing water, and the washing effect is improved.

The invention relates to the technical field of automobile machining, and discloses a polishing device for an automobile. The device comprises a polishing device body, wherein a polishing motor is fixedly mounted inside the polishing device body, a mounting groove is formed in the lower end of the polishing device body, a polishing mechanism for polishing is arranged in the mounting groove, the polishing mechanism comprises a polishing disc, an impeller blade, a telescopic sleeve, a telescopic rod, a rubber rod and a polishing assembly, the polishing disc is rotationally mounted in the mounting groove, the upper end of the polishing disc is fixedly connected to the output end of the polishing motor, a rotating groove is formed in the upper end of the polishing disc, and the impeller blade is fixedly mounted in the rotating groove. According to the device, by means of the polishing mechanism, generated chippings can not be adsorbed to the surface of the automobile due to static electricity, meanwhile, the chippings are treated, then a better polishing effect is achieved through the polishing assembly, and an abrasive paper layer can be attached to an irregular face of the automobile.

The present invention provides a structure capable of preventing installed air conditioner indoor unit fan from generating freedom. The structure includes fan with molded installing hole, fan motor with rotating shaft and ring shaft sleeve set between molded installing hole and the rotating motor shaft. The ring shaft sleeve consists of two connected ring sleeves with reinforcing ribs and has inner sleeve with diameter smaller than diameter of the rotating shaft of the motor. The present invention installs ring shaft sleeve similar to rolling beaming inside the molded fan hole and the installs the motor shaft via the shaft sleeve so as to control the freedom of the fan for smooth rotation, low noise and less friction between the fan and the air inlet.

The invention relates to a liquid crystal display backlight module comprising a plastic frame, a metal backboard, a metal outer frame, a liquid crystal panel, a flexible connecting wire, and a plurality of pairs of baffle strips, wherein the plastic frame is buckled with the metal backboard by a first buckling piece, the metal backboard is buckled with the metal outer frame by a second buckling piece and fixes the liquid crystal panel, the liquid crystal panel is connected with the flexible connecting wire, and the baffle strips for supporting the flexible connecting wire are arranged on the plastic frame. The baffle strips are arranged on the plastic frame and below the clear areas of the flexible connecting wire and only contact the clear areas on two sides of the flexible connecting wire, thereby preventing metal foreign bodies from entering a flexible connecting wire region and supporting the flexible connecting wire simultaneously and decreasing the friction probability between the flexible connecting wire and the plastic frame, thereby decreasing the probabilities that the flexible connecting wire protection layer is melted and the lead wire area of the flexible connecting wire is short. The production quality of the liquid crystal display backlight module is improved, and the defective rate caused in the transportation process is reduced.

The invention provides an insert-type needle bed for computerized flat knitting machines. The needle bed is characterized by comprising an insert-type needle bed substrate with a front needle channelmounting groove and a doffing front needle channel combined insert sheet; two side walls of the front needle channel mounting groove of the insert-type needle bed substrate with a front needle channelmounting groove are provided with grooves for reducing the thickness of side walls, wherein the bottom of the groove is arc shaped; two sides of the doffing front needle channel combined insert sheetare provided with arc bosses corresponding to the grooves, wherein the bottom of the arc boss is matched arc shaped. An advantageous effect of the invention is that spacers are provided above the needle slot insert sheet. The width of the needle slot is fixed and evenly divided the width of the needle slot is evenly distributed, which avoids the disadvantage of different size of the needle slot,and avoids the unevenness of the upper interval caused by the slight distortion of the insert sheet. The probability of the sinker and the needle rubbing is reduced, the knock off of weaving needle isavoided; the grip of the needle is effectively controlled; the front groove of the formed needle slot is smaller than the rear groove.

The invention discloses a silane coupling agent coated recrystallized modified potassium chlorate, which is of a core-shell type structure, takes potassium chlorate as an inner core, and takes a silane coupling agent as a raw material for coating a shell, and the mass ratio of the silane coupling agent to the potassium chlorate is 0.15-0.04:1. The preparation method of a potassium chlorate product disclosed by the invention comprises the following steps: preparing a saturated solution of potassium chlorate firstly; and then, adding a silane coupling agent serving as a modifier, carrying out constant-temperature stirring and condensed backflow, and after the reaction is completed, carrying out evaporative crystallization on the obtained product until the obtained object is constant in weight, thereby obtaining the silane coupling agent coated recrystallized modified potassium chlorate. The silane coupling agent coated recrystallized modified potassium chlorate can be used as an oxidant for fireworks and crackers, and can reduce the mechanical sensitivity of potassium chlorate containing pyrotechnic compositions, and increase the thermal security and stability of potassium chlorate containing pyrotechnic compositions.

A straight-tube-type front shock absorber with high performance comprises a tube body, a piston pipe arranged in the tube body and a front fork pipe arranged on the exterior of the piston pipe in a sleeving mode. A restoration valve is arranged at the lower end of the front fork pipe, a screw plug is connected to the upper end of the front fork pipe in a screwed mode, and a piston head matched with the restoration valve is arranged at the upper end of the piston pipe. The restoration valve, the inner wall of the tube body and the outer wall of the piston pipe define a compression cavity, the inner wall of the front fork pipe, the outer wall of the piston pipe, the piston head and the restoration valve define a restoration cavity, and an oil storage cavity is defined among the screw plug, the inner wall of the front fork pipe and the piston head. A first spring is arranged in the restoration cavity, a second spring is arranged in the oil storage cavity, and a damping hole is formed in one side of the upper portion of the piston pipe. According to the straight-tube-type front shock absorber with the high performance, the buffering function can be ensured while the production cost isreduced, and thus the performance of the straight-tube-type front shock absorber is ensured.

The invention discloses a massive four-stage moving bed carbonization furnace in a hydrogen-rich environment and a carbonization method thereof. The dry distillation furnace includes a drying preheating section, a sealing section, a dry distillation section, and a cooling section arranged sequentially from top to bottom. The upper part of the drying preheating section is provided with a feed port and the lower part is provided with an air inlet, and the upper part is far away from the air inlet end. There is an exhaust port, and the sealing section is connected to the upper drying and preheating section and the lower retort section through the star feeder installed inside. The oil and gas outlet, the cooling section is connected with the dry distillation section, the bottom of the cooling section is provided with a coke discharge port to connect with the coke discharge system and the lower part is provided with a cold gas inlet. The dry distillation method includes the steps of drying and preheating, sealing, dry distillation and cooling. The invention has the characteristics of low power consumption, high energy utilization rate, high oil production rate, good oil quality, less oil and gas dust, high gas calorific value and high resource utilization rate.

The invention discloses a garbage double-shaft crusher main shaft single-side positioning method. According to the assembling method, the single-direction positioning structure is adopted, the structural design for a main shaft assembly is regulated, and therefore it is ensured that two main shaft assemblies can be locked from the same single side when the installation directions are opposite, andtherefore the problems that due to machining error problems of tools and spacer bushes, assembling cannot be performed, the tools are crossed, and friction is caused are solved, meanwhile, tool resistance generated by friction is eliminated, the noise problem generated by friction is eliminated, and the energy efficiency is lost. Meanwhile, the problem of assembling reworking is solved. The method can effectively ensure the effective clearance of 0.1-0.3 MM needed when the crossed tools on double shafts of a crusher are used for shearing, meanwhile, the phenomena that due to machining errors,installing cannot be achieved, tools are abraded, and tool collision is caused can be greatly reduced, meanwhile, the installing and maintaining time is shortened, and the structure is applicable tovarious equipment machines similar to crushers in shear type cross operation.

The invention provides a peripheral side plate transfer working station apparatus. The peripheral side plate transfer working station apparatus comprises upper supporting frames, stand columns, a lower supporting frame, cross beams, a front supporting frame, a steel mesh, horseshoe bases, longitudinal beams, wheels, s forklift groove and a rear supporting frame, the stand columns are connected with the cross beams through welding, the upper ends and the lower ends of the rear sides of the upper supporting frames are connected to the two upper cross beams and the two lower cross beams in a welded mode correspondingly, the number of the upper supporting frames is two, the two ends of the lower supporting frame are fixedly connected to the two lower cross beams in a welded mode, the front supporting frame is connected to the tail ends of cross bars of the stand columns through welding, the steel mesh is fixedly connected to the inner sides of frame bodies of the cross beams, and the longitudinal beams are connected to the stand columns in a welded mode. Compared with an existing transfer frame, a fixing support for a peripheral side plate is additionally arranged, the probability thatthe peripheral side plate shakes or falls off due to shaking of a vehicle body in the transportation process is reduced, the risk that the surface of the peripheral side plate is abraded, and then the quality of finished products is affected is reduced, and a transfer vehicle is simple in structure, convenient to operate and small in occupied area.

The invention discloses a traditional Chinese medicine composition for treating bone joint diseases, which is prepared from 50-60g of rhizoma atractylodis, 50-60g of phellodendron bark, 60-80g of southernwood seed, 30-40g of club moss, 30-40g of american lopseed, 30-40g of brown sugar, 30-40g of radix achyranthis bidentatae, 5-15g of asarum, 50-60g of teasel root, 20-30g of stir-baked squama manitis, 30-40g of Dioscorea tokoro Makino, 20-30g of radix clematidis, 30-40g of oriental wormwood, 50-60g of tuckahoe, 30-40g of madder, 60-80g of lucid ganoderma and 1500-2000g of ginger. The traditional Chinese medicine composition for treating bone joint diseases can be used in a way of external application, fumigation, medicated bath, plastering or scrubbing. The pulverized components can be directly plastered onto the periphery of the joint, and then wrapped with a preservative film. The invention has the effects of promoting blood circulation, regulating qi, strengthening the muscles and bones, removing blood stasis, activating blood flow, restoring menstrual flow, activating collateral flow, reducing the stagnation and dredging the stasis, has the advantages of no injury or pain for the human body, wide medicine sources and no toxic or side effect, and can effectively treat bone joint diseases.

The invention discloses a traditional Chinese medicine composition for treating a bone disease. The traditional Chinese medicine composition comprises the following components according to the weight unit of 20-30g of saffron crocus, 50-60g of lucid ganoderma, 10-20g of nux vomica, 30-40g of root of bidentate achyranthes, 20-30g of radix rubiae, 50-60g of herba pyrolae, 30-40g of herba epimedii, 50-60g of lycopodium clavatum, 20-30g of liquorice, 20-30g of garden balsam stem, 10-20g of radix sophorae flavescentis, 60-70g of silky ant, and 5000-6000g of ginger. The traditional Chinese medicine composition is externally used, and can be used for suffocating, dipping, smearing and scrubbing. Each component can be directly smeared and treated on the full body after being crushed, and then coated by a preservative film after being smeared. The traditional Chinese medicine composition has the effects of promoting blood circulation and regulating qi, strengthening tendons and bones, dissipating blood stasis and activating blood circulation, clearing and activating the channels and collaterals, eliminating stagnation and dredging blood stasis, is free of damage to a human body, free of pain, wide in medicinal herb source, and free of toxic and side effects, and can effectively treat the bone disease. 122 sufferers in all are treated, the effective rate is 93.6% and the good rate is 89.4%.

The invention discloses a small-particle four-section moving bed dry distillation furnace with a hydrogen-enriched environment and a dry distillation method of the small-particle four-section moving bed dry distillation furnace. According to the dry distillation furnace, a feeding hole is formed in the upper part of a drying and preheating section, an upper air inlet and a lower air inlet are respectively formed in the middle side and lower side of the drying and preheating section, and an air outlet is formed in the end, far away from the upper air inlet, of the drying and preheating section; the drying and preheating section is vertically communicated with a dry distillation section through a sealing section; a medium-temperature air inlet is formed in the middle side of the dry distillation section, a high-temperature air inlet is formed in the lower side of the dry distillation section, and an oil gas outlet communicated with an oil gas recovery system arranged on the outer wall of the dry distillation section is formed in the medium-upper side of the dry distillation section; a cold coal gas inlet is formed in the middle side of a cooling section, a coal gas outlet is formed in the upper side of the cooling section, a water inlet is formed in the lower side of the cooling section, and a water outlet is formed in the middle side of the cooling section; and the cooling section is provided with a cooling heat exchanger communicated with the water inlet and the water outlet. The dry distillation method comprises the steps of drying and preheating; sealing; carrying out dry distillation; and cooling. The small-particle four-section moving bed dry distillation furnace with the hydrogen-enriched environment has the characteristics that the power consumption is low, the energy utilization rate and oil yield are high, the quality of an oil product is good, the dust content of oil gas is low, and the utilization rate of resources is high.

The invention discloses a bicycle front frame with anti-corrosion performance. The frame comprises a front frame body. The front frame main body comprises a transverse handlebar, a vertical rod, a fender and a connecting and positioning mechanism; the transverse handlebar is fixed to the top of a vertical bicycle rod. The fender is located under the vertical bicycle rod. The vertical bicycle rod is detachably installed on the vertical bicycle rod in a sleeving mode and connected with the fender for limiting, the connecting and positioning mechanism comprises a hoop, a connecting rod and a clamping assembly, the hoop is fixed to the vertical bicycle rod through a bolt, installation blocks are fixed to the front surface and the rear surface of the hoop, and the installation blocks are U-shaped blocks with downward openings. By arranging the connecting and positioning mechanism, fastening connection and positioning of the mudguard in the front frame can be achieved, and the probability that the mudguard deviates in the front-back direction to rub the surface of a front wheel is reduced; the connection tightness is improved, the mudguard is prevented from loosening, the whole mechanismis convenient to mount and dismount, and the running of the bicycle is not influenced.

This invention relates to a multi-channel oil-well pump which can be anchored. It comprises upper connector, outer cylinder, pump barrel and plunger piston, and the reducer union, tubing line pump bridge oil inlet duct, liquid commutator, brass pipe and upper connector are connected together; wherein said elements form the circular channel connecting to oil pipe, sucking liquid through the bridge oil inlet duct; the liquid commutator connects with the reducer union through the brass pipe, being another liquid discharging pipe; by increasing the discharging pipe, it can decrease the liquid pressure in the pump and the friction of pumping rod and oil line; the circular channel applies the force to the lower of the pump, creating anchor effect, by which can increase the effective stroke of oil-well pump.

The invention discloses a flashboard for water conservancy and hydropower engineering construction in the technical field of water conservancy and hydropower construction equipment. The flashboard comprises a mounting frame, sealing assemblies are arranged on the outer walls of the left side and the right side of the flashboard, and the outer walls of the sides, away from the flashboard, of the sealing assemblies are attached to the inner wall of the mounting frame. According to the device, the flashboard moves downwards to push a push rod upwards; air in an air storage tank enters a middle inner cavity of an air bag, a fixing block is moved out of an inner cavity of a fixing groove, a pressing plate extrudes the air bag under extrusion of water, air in the air bag enters an inner cavity of a mounting sleeve, a moving rod drives a sealing strip to move to be attached to the inner wall of a mounting frame; the fitting tightness of the flashboard and the inner wall of the mounting frame is improved, and meanwhile, the sealing strip can contract and move, so that the friction probability of the sealing strip in the moving process of the flashboard is reduced, and the service life of the sealing strip is guaranteed.