32results about How to "Meet the locking requirements" patented technology

The invention relates to a locking and sealing device for an undersea armored cable. The locking and sealing device comprises a support, a sealing chamber, a flange inner cone, a pressure cap for spirally sealing the tail part of the support and a locking pressure plate positioned in the sealing chamber, wherein the sealing chamber and the flange inner cone are fixed on the support. The locking and sealing device is characterized in that a locking block and a tapered colloid are further contained in the flange inner cone, wherein the locking block is positioned at the head of the flange inner cone, and a wire slot for accommodating an armored steel wire is arranged on the locking block; and the tapered colloid is positioned at the tail of the flange inner cone. The locking and sealing device is simple and compact in structure, can apply same locking force to each armored steel wire, and is further convenient for mounting. Compared with the existing connecting and fixing way of the armored cable, the locking and sealing device has the advantages that the cable can be effectively locked, the maximum bearing pulling force of the armored cable can be met, the armored cable can be prevented from exposing in seawater, rust corrosion is avoided, and the service life and reliability of the armored cable are obviously improved. The device can be applied in land bank stations, underwater bases and other underwater facilities.

The invention relates to a mechanism for an aerospace single machine product to meet the requirement for easy plugging of the aerospace single chip in maintenance. The mechanism includes: a plug which is with pins and is mounted at the bottom part of the aerospace single machine; a mushroom head, which is disposed at the bottom part of the aerospace single machine; a mounting bench, which is provided with a plurality of interfaces parallel to each other, and each interface includes a socket and a mounting hole wherein the mounting hole fits with the socket. and an elastic holding device, which is disposed in the mounting hole, and which fits with the mushroom head. With the mechanism for an aerospace single machine product to meet the requirement for easy plugging of the aerospace single chip in maintenance provided by the invention, difficult problems of alignment, unlocking and locking of the aerospace single machine in on track change are solved.

The invention discloses an expansion water tank cover capable of preventing people from being scalded under high temperature of an engine. The expansion water tank cover comprises a shell, an electromagnet, a push rod, a tooth ring and a spring, wherein an inner groove is formed in the shell; a through hole is formed in the upper part of the shell and communicates with the inner groove; a stop spring is arranged at the lower part of the shell; the electromagnet is arranged at the upper part of the inner groove; a magnet is arranged at the upper part of the push rod and matched with the electromagnet to be attracted by and separated from the electromagnet; a toothed disc is arranged at the lower part of the push rod; the push rod can slide up and down in the inner groove relative to the shell, and the sliding position is determined through the stop spring; the tooth ring is fixed at the upper part of the interior of the water tank; when the push rod slides upwards, the tooth ring is meshed with the toothed disc to fix the toothed disc; and the spring is arranged between the electromagnet and the push rod. The invention further discloses an expansion water tank capable of preventingpeople from being scalded under high temperature of the engine and a control method of the expansion water tank.

The invention discloses a bodybuilding horizontal bar. The bodybuilding horizontal bar comprises a pipe sleeve and sleeve rods, and the pipe sleeve sleeves the sleeve rods. The sleeve rods are two screw rods, the inner ends of the screw rods are connected with end umbrella-shaped gears, a middle umbrella-shaped gear is arranged in the pipe sleeve, the middle umbrella-shaped gear is located betweenthe two end umbrella-shaped gears and is engaged with the two end umbrella-shaped gears, and a penetrating hole is formed in the pipe sleeve. A boss penetrating into the penetrating hole is arrangedon the top face of the middle umbrella-shaped gear, a spanner inserting slot is formed in the top face of the boss, a shaft sleeve sleeves the positions, on the outer sides of the end umbrella-shapedgears, of the screw rods, and nuts are arranged on the outer side of the shaft sleeve. The outer face of the shaft sleeve cushions and abuts against the inner face of the pipe sleeve, a sleeve sleevesthe outer sections of the screw rods, the outer end of the sleeve stretches out of the pipe sleeve and is connected with a connecting seat, the pipe sleeve sleeves the inner end of the sleeve, an inner end pipe opening sleeves the nuts and is integrally connected with the nut, a concave axial limiting groove is formed in the outside of the sleeve, an end sleeve sleeves and is fixed to the outer end of the pipe sleeve, and the inner face of the end sleeve protrudes to form a limiting protruding part stretching into the limiting groove. The bodybuilding horizontal bar is simple in structure, good in locking effect, safe and practical, and locking operation is convenient and saves labor.

The invention relates to a locking device for random position locking and a method for determining the minimum stress thereof, belonging to the technical field of locking devices. A locking mechanism with simple structure and reasonable design, which realizes locking in random positions by means of eccentric wheels to drive resilient strips and unlocking timely and realizes cycle working with reliable locking, and a method for determining the minimum stress thereof are provided. The technical scheme comprises a fixed hollow locking body and a piston which is slidingly installed inside the hollow locking body, and a moving body which is installed on a piston rod in a sleeved mode; the piston is provided with resilient strips and eccentric wheels for driving the resilient strips; each resilient strip is provided with a wedge block which is installed between the resilient strip and the inner wall of the hollow locking body; the resilient strips are jacked up on the wedge blocks by the rotating eccentric wheels; The locking device is widely used in locking mechanism involved in complex motion.

The invention discloses a locking strip for vertical mounting. The locking strip comprises a wedge-shaped fixing groove, a clamping wedge body, a wedge head screw rod, a rotating wedge block and a pulling reed which are connected with each other. The wedge-shaped fixing groove comprises an anti-turning groove body, a lower slope face, a lower skew surface and a lower clamping part. The clamping wedge body comprises a wedge body, an upper slope face, an upper skew surface and an upper clamping part. The wedge head screw rod comprises a screw rod main rod, a wedge head and a double-section thread section. The rotating wedge block comprises a rotating body, a cone wedge face, a mounting hole and a double-section inner thread part. The pulling reed comprises a reed body, a sleeve hole, an upper hook body and a lower hook body. The clamping part is arranged between the wedge-shaped fixing groove and the clamping wedge body. The pulling reed is subjected to sleeving connecting to achieve mutual traction balance between components. When the locking strip is inserted vertically, plate card inserting is not affected. The double-section inner thread part and the double-section thread section are ingeniously used for forming a thread anti-falling structure. An electric tool can carry out quick assembling and disassembling. Working efficiency is improved.

The invention discloses a hydraulic locking device used for an underwater butt-joint shaft part and a locking method for the hydraulic locking device. The device comprises a bracket mechanism, a hydraulic oil device, hydraulic propulsion mechanisms, an angle detecting device, a pressure detecting device and an upper computer, wherein the bracket mechanism comprises an upper shaft sleeve, a connecting lug, a connecting frame and a connecting disc; the outer wall of the shaft part is connected with upper shaft sleeve rotary support through a bearing; the connecting lug is connected onto the outer wall of the upper shaft sleeve; the connecting lug is connected with one end of the connecting frame; the other end of the connecting frame is supported in water after being connected with the connecting disc; the shaft part is arranged on the center of the connecting disc; the hydraulic propulsion mechanisms are uniformly arranged in the peripheral direction, around the shaft part, of the disc periphery of the connecting disc; and the hydraulic propulsion mechanisms can be used for locking or loosening the shaft part. The device can ensure that each hydraulic propulsion mechanism applies enough locking force to the shaft part, so that guarantee is provided for locking underwater large butt-joint shaft parts of different diameters.

The invention discloses a lying bed. The lying bed comprises a lying bed main body. A transverse beam rod is horizontally arranged at the top of the lying bed main body; ceiling side frames are mounted at the two ends of the transverse beam rod by hand wheels, angle turning devices A and angle turning devices B; tarpaulin is mounted on each of the two ceiling side frames in a tightened manner; each angle turning device B is a column body B with a central hole B and a flange B is arranged at one end of each column body B; each angle turning device A is a column body A with a central hole A and a flange A is arranged at one end of each column body A; each angle turning device B is fixedly arranged on one end part of the transverse beam rod in the peripheral direction; through holes are formed in the ceiling side frames; a thread end of each hand wheel sequentially penetrates through the through hole of the corresponding ceiling side frame and the central hole A of the corresponding angle turning device A to be in threaded connection with the central hole B of the corresponding angle turning device B; the end face of the flange A of each angle turning device A is in conical tabletop contact fit with the end face of the flange B of the corresponding angle turning device B. According to the technical scheme, the structure is simple and reasonable, the angle of a ceiling is convenient to adjust and a locking force is great so that the lying bed can be locked and fixed stably.

The invention discloses a ceiling rotation locking mechanism, which comprises a beam rod, a ceiling side frame, a hand wheel, a corner device A and a corner device B, the corner device B is a cylinder B with a central hole B, and one end of the cylinder B is set There is a flange B, the corner member A is a cylinder A with a central hole A, one end of the cylinder A is provided with a flange A, the corner member B is circumferentially fixed on the end of the beam rod, and the side frame of the ceiling is provided with a through The threaded end of the handwheel passes through the through hole of the side frame of the ceiling, the center hole A of the corner A, and then is threaded with the center hole B of the corner B, and the end surface of the flange A of the corner A and the flange of the corner B The B end face forms a conical table contact fit. The structure of the technical scheme is simple and reasonable, the angle of the ceiling can be adjusted conveniently, the locking force is large, and the locking and fixing are stable.

The invention discloses a tripod telescopic rod. The tripod telescopic rod comprises a primary tube, a secondary tube and a tertiary tube, wherein the end, close to the secondary tube, of the primarytube penetrates through the secondary tube to extend to the inside of the secondary tube to be movably connected with the inside of the secondary tube, and the end, close to the tertiary tube, of thesecondary tube penetrates through the tertiary tube to extend to the inside of the tertiary tube to be movably connected with the inner wall of the tertiary tube; preferably, the left and right sidesof the primary tube, the secondary tube and the tertiary tube respectively are large heads and small heads, wherein the thicknesses of the large heads are larger than those of the small heads, each small head is provided with a taper, and each large head is not provided with a taper; and the primary tube, the secondary tube and the tertiary tube are made of carbon fiber or glass fiber. According to the tripod telescopic rod, through the mutual cooperation of the primary tube, the secondary tube, the tertiary tube, the large heads and the small heads, the locking requirement can be achieved bytwo sections directly without adding a connecting piece, the structure is simple, the operation is convenient, and great convenience is brought to a user.

The steel wire rope locking device comprises a connecting plate, a wedge-shaped groove is formed in the side face of the connecting plate, a wedge is inserted into the wedge-shaped groove in a matched mode, the two ends of the wedge-shaped groove are open, first grooves are formed in the side walls of the two sides of the wedge-shaped groove respectively, and second grooves are formed in the side faces of the two sides of the wedge respectively. And when the wedge is inserted into the wedge-shaped groove, the first groove and the second groove on the same side are oppositely arranged. The steel wire rope locking device provided by the invention is convenient to adapt to quick operation of locking a temporary stay wire of a line, is convenient to operate, high in efficiency and high in universality, and can quickly assist field maintenance personnel in quickly locking a steel wire rope.

The invention relates to a gravity meter locking mechanism which comprises an installation support, a driving rod, a driving wheel, an upper locking disc, an upper locking spring, a lower locking rod,a lower locking spring, an upper locking disc driving rod assembly and a lower locking rod driving rod assembly. The driving rod is connected to upper and lower mounting arms of the installation support; the driving wheel is fixedly arranged on the driving rod, and the wheel thickness between the upper and lower driving wheel acting surfaces of the driving wheel is gradually changed; the upper locking disc and the upper locking spring are mounted on the upper mounting arm, and the lower locking rod and the lower locking spring are mounted on the lower mounting arm; the upper locking disc driving rod assembly is installed in an upper limiting guide sleeve fixed to the upper mounting arm, the lower end of the upper locking disc driving rod assembly makes contact with the upper driving acting face, and the upper end of the upper locking disc driving rod assembly makes contact with the lower end of the upper locking disc; the lower locking rod driving rod assembly penetrates into a lowerlimiting guide sleeve fixed to the lower mounting arm, the upper end of the lower locking rod driving rod assembly makes contact with the lower driving acting face, and the lower end of the lower locking rod driving rod assembly makes contact with the upper end of a rod head of the lower locking rod. The mechanism is firm in locking and good in reliability.

The invention relates to a locking and sealing device for an undersea armored cable. The locking and sealing device comprises a support, a sealing chamber, a flange inner cone, a pressure cap for spirally sealing the tail part of the support and a locking pressure plate positioned in the sealing chamber, wherein the sealing chamber and the flange inner cone are fixed on the support. The locking and sealing device is characterized in that a locking block and a tapered colloid are further contained in the flange inner cone, wherein the locking block is positioned at the head of the flange innercone, and a wire slot for accommodating an armored steel wire is arranged on the locking block; and the tapered colloid is positioned at the tail of the flange inner cone. The locking and sealing device is simple and compact in structure, can apply same locking force to each armored steel wire, and is further convenient for mounting. Compared with the existing connecting and fixing way of the armored cable, the locking and sealing device has the advantages that the cable can be effectively locked, the maximum bearing pulling force of the armored cable can be met, the armored cable can be prevented from exposing in seawater, rust corrosion is avoided, and the service life and reliability of the armored cable are obviously improved. The device can be applied in land bank stations, underwater bases and other underwater facilities.

The invention belongs to the technical field of hollow shaft detection, and discloses a butt joint device which comprises a driving mechanism and a locking mechanism. The locking mechanism comprises a locking body and at least one drag hook capable of rotating around the axis of the drag hook. The driving mechanism is connected with the locking mechanism; the locking body is connected with the drag hook; and the driving mechanism drives the drag hook to rotate and drives the locking body to move in the width direction of the locking body at the same time. The accurate butt joint between the butt joint device and an external adapter can be achieved, the rapid locking of the butt joint device can be achieved through one-time operation in the locking process, and the butt joint device is very convenient to use.

The invention discloses a locking strip for vertical mounting. The locking strip comprises a wedge-shaped fixing groove, a clamping wedge body, a wedge head screw rod, a rotating wedge block and a pulling reed which are connected with each other. The wedge-shaped fixing groove comprises an anti-turning groove body, a lower slope face, a lower skew surface and a lower clamping part. The clamping wedge body comprises a wedge body, an upper slope face, an upper skew surface and an upper clamping part. The wedge head screw rod comprises a screw rod main rod, a wedge head and a double-section thread section. The rotating wedge block comprises a rotating body, a cone wedge face, a mounting hole and a double-section inner thread part. The pulling reed comprises a reed body, a sleeve hole, an upper hook body and a lower hook body. The clamping part is arranged between the wedge-shaped fixing groove and the clamping wedge body. The pulling reed is subjected to sleeving connecting to achieve mutual traction balance between components. When the locking strip is inserted vertically, plate card inserting is not affected. The double-section inner thread part and the double-section thread section are ingeniously used for forming a thread anti-falling structure. An electric tool can carry out quick assembling and disassembling. Working efficiency is improved.

The invention discloses a hydraulic locking device and a locking method for underwater docking shaft parts. The device includes a support mechanism, a hydraulic oil device, a hydraulic propulsion mechanism, an angle detection device, a pressure detection device and a host computer, wherein , the support mechanism includes an upper shaft sleeve, a connecting ear, a connecting frame and a connecting plate, the outer wall of the shaft part is connected to the upper shaft sleeve through a bearing for rotational support, the connecting ear is connected to the outer wall of the upper shaft sleeve, and the connecting ear is connected to one end of the connecting frame connection, the other end of the connecting frame is fixedly connected to the connection plate and then supported on the bottom of the water. The center of the connection plate is a shaft part, and several hydraulic propulsion mechanisms are evenly arranged on the circumference of the connection plate around the circumference of the shaft part. The propulsion mechanism can lock or loosen the shaft parts. The device of the invention can ensure that each hydraulic propulsion mechanism exerts sufficient locking force on the shaft parts, and provides a guarantee for realizing the locking of large butt joint shaft parts with different diameters underwater.

The invention discloses a lying bed, which comprises a bed main body. A beam bar is horizontally arranged on the top of the bed main body. Both ends of the beam bar are equipped with a ceiling side frame through a hand wheel, a corner unit A and a corner unit B. Tightly install the tarpaulin on the side frame of the ceiling, the corner B is a cylinder B with a central hole B, and one end of the cylinder B is provided with a flange B, and the corner A is a cylinder A with a central hole A, One end of the column body A is provided with a flange A, and the angler B is circumferentially fixed on the end of the beam rod. There is a through hole on the side frame of the ceiling. The central hole A is then screwed to the central hole B of the angler B, and the flange A end surface of the angler A and the flange B end surface of the angler B form a conical table contact fit. The structure of the technical scheme is simple and reasonable, the angle of the ceiling can be adjusted conveniently, the locking force is large, and the locking and fixing are stable.

The invention relates to a high-voltage power transmission line detonating cord fixing device which comprises a fixing part. The fixing part is provided with a space used for containing a high-voltage power transmission line, a first gear and a second gear which can move towards each other or away from each other are arranged above the fixing part, and the first gear is elastically connected with a shell through a first frame body; the second gear is elastically connected with the shell through a second frame body, the shell is fixed to the top of the fixing part, and the top of the first frame body is elastically connected with a first locking piece capable of being inserted between the adjacent gear teeth of the first gear; the top of the second frame body is elastically connected with a second locking piece capable of being inserted between the adjacent gear teeth of the second gear, and a detonating cord fixing element is arranged at the bottom of the fixing part. The fixing device provided by the invention meets the requirements of fixing the detonating cords below the high-voltage power transmission lines with different diameters.

The invention relates to an in-car clamping pin type automatic reset mechanical hydraulic linkage door lock device and an operation method. The device comprises a handle hinge base, a handle is hingedto the handle hinge base, the other end of the handle is hinged with a rotation frame and a connecting rod at the same time through a handle adapter plate, the other end of the rotation frame is hinged to a rotation frame hinge base, the rotation frame is matched with a hydraulic valve set used for controlling a tail door hydraulic ejector rod, the other end of the connecting rod is hinged to a plug pin assembly used for locking a car door, and the plug pin assembly is matched with a car door pin shaft on a tail door and used for locking the car door. The car tail door locking is achieved, and the phenomenon that after long-time use, the tail door cannot be locked, and automatic opening danger is caused is avoided.

The invention relates to a mechanism for an aerospace single machine product to meet the requirement for easy plugging of the aerospace single chip in maintenance. The mechanism includes: a plug which is with pins and is mounted at the bottom part of the aerospace single machine; a mushroom head, which is disposed at the bottom part of the aerospace single machine; a mounting bench, which is provided with a plurality of interfaces parallel to each other, and each interface includes a socket and a mounting hole wherein the mounting hole fits with the socket. and an elastic holding device, which is disposed in the mounting hole, and which fits with the mushroom head. With the mechanism for an aerospace single machine product to meet the requirement for easy plugging of the aerospace single chip in maintenance provided by the invention, difficult problems of alignment, unlocking and locking of the aerospace single machine in on track change are solved.

The invention relates to an in-car clamping pin type automatic reset mechanical hydraulic linkage door lock device and an operation method. The device comprises a handle hinge base, a handle is hingedto the handle hinge base, the other end of the handle is hinged with a rotation frame and a connecting rod at the same time through a handle adapter plate, the other end of the rotation frame is hinged to a rotation frame hinge base, the rotation frame is matched with a hydraulic valve set used for controlling a tail door hydraulic ejector rod, the other end of the connecting rod is hinged to a plug pin assembly used for locking a car door, and the plug pin assembly is matched with a car door pin shaft on a tail door and used for locking the car door. The car tail door locking is achieved, and the phenomenon that after long-time use, the tail door cannot be locked, and automatic opening danger is caused is avoided.

The invention provides an aerostat mooring device and mooring method. The aerostat mooring device comprises an installation base assembly, a transmission and locking assembly and a locking base assembly, one end of the locking base assembly is used for being connected with an aerostat, and the other end of the locking base assembly is locked or released through a transmission and locking assemblyarranged on the installation base assembly. One end, close to the transmission and locking assembly, of the locking base assembly is provided with a connecting port for a traction rope to penetrate through. Compared with the prior art, the aerostat mooring device provided by the invention can meet the requirements of ground mooring and locking of aerostats of different sizes and different types, is more convenient and reliable than a traditional manual mooring lock, liberates manpower and material resources, and avoids the danger of aloft work.

The invention relates to a locking device for random position locking and a method for determining the minimum stress thereof, belonging to the technical field of locking devices. A locking mechanism with simple structure and reasonable design, which realizes locking in random positions by means of eccentric wheels to drive resilient strips and unlocking timely and realizes cycle working with reliable locking, and a method for determining the minimum stress thereof are provided. The technical scheme comprises a fixed hollow locking body and a piston which is slidingly installed inside the hollow locking body, and a moving body which is installed on a piston rod in a sleeved mode; the piston is provided with resilient strips and eccentric wheels for driving the resilient strips; each resilient strip is provided with a wedge block which is installed between the resilient strip and the inner wall of the hollow locking body; the resilient strips are jacked up on the wedge blocks by the rotating eccentric wheels; The locking device is widely used in locking mechanism involved in complex motion.

The invention discloses a rotating locking mechanism of a ceiling. The rotating locking mechanism of the ceiling comprises a transverse beam rod, ceiling side frames, hand wheels, angle turning devices A and angle turning devices B, wherein each angle turning device B is a cylinder B with a central hole B, a flange B is arranged at one end of each cylinder B, each angle turning device A is a cylinder A with a central hole A, a flange A is arranged at one end of each cylinder A, the angle turning devices B are fixed to the end portions of the transverse beam rod respectively in the circumferential direction, a through hole is formed in each ceiling side frame, the threaded end of each hand wheel is in threaded connection with the central hole B of the corresponding angle turning device B after penetrating through the through hole of the corresponding ceiling side frame and the central hole A of the corresponding angle turning device A, and the end face of the flange A of each angle turning device A and the end face of the flange B of the corresponding angle turning device B are in cone frustum surface contact fit. According to the technical scheme, the rotating locking mechanism of the ceiling is simple and reasonable in structure, adjustment of the angle of the ceiling is convenient, locking force is large, and locking fixation is stable.

The invention relates to an electrically-control type differential lock control mechanism, and belongs to the technical field of electrically-control type automobile drive axles. The electrically-control type differential lock control mechanism comprises a reducer shell. A shifting fork shaft is arranged in the reducer shell and sleeved with a shifting fork and a return spring. The shifting fork is connected with a shift sleeve in a limiting mode. The shift sleeve is arranged on a main shaft in a sleeving mode. An axial limiting sleeve on the main shaft is provided with a drive gear capable of being meshed with the shift sleeve. An electric control mechanism is further arranged in the reducer shell. The output end of the electric control mechanism is connected with a push rod mechanism capable of linearly moving. The push rod mechanism and the shifting fork shaft are coaxially arranged. The push rod mechanism makes axial contact with the shifting fork shaft in a connected mode. The invention further discloses an electrically-control differential lock control method. By means of the electronically-control differential lock control mechanism and method, locking and separation of a differential lock can be achieved under the conditions that no gas source exists when an automobile is motionless and after parking and flameout are conducted, gear shifting is convenient to conduct, and the locking requirement required in the hill-holding brake process is met.

The invention relates to a gravimeter locking mechanism, comprising a mounting bracket, a driving rod, a driving wheel, an upper locking disc, an upper locking spring, a lower locking rod, a lower locking spring, an upper locking disc drive rod assembly and a lower locking plate The locking rod driving rod assembly; the driving rod is connected to the upper and lower mounting arms of the mounting bracket; the driving wheel is fixed on the driving rod, and the wheel thickness between the upper and lower driving wheel working surfaces of the driving wheel is a gradient thickness; the upper locking disc and the upper locking spring are installed on the upper installation arm, the lower locking rod and the lower locking spring are installed on the lower installation arm; the upper locking disc drive rod assembly is installed in the upper guide sleeve fixed on the upper installation arm, its The lower end is in contact with the upper driving action surface, and its upper end is in contact with the lower end of the upper locking plate; the lower locking rod driving rod assembly is inserted into the lower limit guide sleeve fixed on the lower mounting arm, and its upper end is in contact with the lower driving action surface, Its lower end is in contact with the upper end of the rod head of the lower locking rod. The mechanism is firmly locked and reliable.

The invention discloses a combined type hydraulic flow control valve and relates to the technical field of flow control valves, the combined type hydraulic flow control valve comprises a valve body and a water inlet pipe, an adjusting valve plate is arranged on one side of a reference valve plate, a fine adjustment mechanism is arranged on one side of the valve body, and a coarse adjustment mechanism is arranged on the other side of the valve body; butt joint structures are arranged at the two ends of the water inlet pipe, the water inlet pipe is connected with the valve body through the butt joint structures, a flow monitoring mechanism is arranged on the inner wall of the water outlet pipe, and an impurity collecting assembly is arranged on the inner wall of the water inlet pipe. When liquid needs to be subjected to large-flow circulation, the rotating disc is rotated, the convex rod is observed to rotate by a certain angle, the flow of the liquid is the maximum when the convex rod rotates by 90 degrees, and the fine adjustment mechanism and the coarse adjustment mechanism are arranged on one valve at the same time, so that the valve body can meet high-precision adjustment of the flow through the fine adjustment mechanism; and rapid and large-flux adjustment control of the flow can be realized through the coarse adjustment mechanism, so that the applicability is improved.