A performance testing device for liquid injection valve structure

Abstract

The present invention relates to the field of valve testing technology, and specifically to a liquid injection valve structure and a performance testing device thereof. The liquid injection valve structure of the present invention comprises a valve body, which is composed of a fixed valve body and a moving valve body. Two groups of valve core components one are installed on the fixed valve body, and a valve core component two corresponding to the valve core component one is installed on the moving valve body. A toggle component for controlling the opening and closing of the moving valve body and the fixed valve body is provided between the moving valve body and the fixed valve body. The moving valve body can be easily controlled to gradually approach or move away from the fixed valve body by the toggle component, and the operation process is stable and reliable. The performance testing device of the present invention comprises a box body, a pushing mechanism is provided on one side of the box body, and a clamping mechanism, a pushing mechanism, a pressure resistance detection mechanism and an airtight detection mechanism are provided inside the box body. The pushing mechanism is used to control the pressure resistance detection mechanism and the airtight detection mechanism to perform linkage actions. Through the coordinated use of the various mechanisms, the pressure resistance test and the airtight test of the liquid injection valve can be simultaneously achieved.

Description

Technical Field

[0001] The invention relates to the technical field of valve testing, in particular to a liquid injection valve structure and a performance testing device thereof. Background Art

[0002] At present, in the existing hydraulic system, the opening and closing is usually controlled by hydraulic valves, multi-way blocks or pipe joints. Among them, hydraulic valves cannot realize the simultaneous opening and closing of multiple circuits. The disassembly and assembly of multi-way blocks and pipe joints requires closing the upper valve first, and the disassembly and assembly are troublesome. With the development of technology and the requirements of working conditions, more and more occasions require the opening and closing of multi-circuit pipelines, and the use of this multi-circuit injection valve can solve the problem of simultaneous filling of multiple circuits and convenient opening and closing.

[0003] The prior art discloses a Chinese patent with publication number CN 118224353 A (IPC classification number G01N3 / 08): an open-and-close multi-way liquid injection valve and a valve body testing device thereof, wherein the open-and-close multi-way liquid injection valve discloses a handle, a rotating rod, a push rod, an oblique arc groove and a protrusion, and the rotation of the rotating rod is controlled by rotating the handle, and the push rod is allowed to move linearly on the rotating rod by utilizing the cooperation of the oblique arc groove and the protrusion to realize the opening and closing of the valve; the valve body testing device discloses a test frame, a fixed frame and a top frame, and by controlling the two test frames to move toward each other, the connecting pipe is connected to the valve core assembly on the liquid injection valve, so that the two water pipes connect the valve core one and the valve core two, and then the handle is operated to separate the main valve body and the auxiliary valve body to close the circuit, and the rotating ring is used to toggle the cross bar so that the pressure block performs a pressure test on the valve body.

[0004] However, the above-mentioned prior art still has certain defects, namely, during the use of the above-mentioned liquid injection valve, the unilateral handle operation easily leads to uneven local force, poor operational stability, and the structure for controlling the opening and closing of the main and auxiliary valve bodies is relatively complicated; and the above-mentioned valve body testing device needs to control the main and auxiliary valve bodies separately for pressure testing, and cannot effectively test the overall pressure resistance strength of the valve body after closing. Summary of the invention

[0005] The object of the present invention is to provide a liquid injection valve structure and a performance testing device thereof to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A liquid injection valve structure, comprising a valve body, the valve body consisting of a fixed valve body and a movable valve body, two sets of valve core components one are installed on the fixed valve body, a valve core component two corresponding to the valve core component one is installed on the movable valve body, a connecting rod is fixedly provided on the movable valve body, a slot corresponding to the connecting rod is opened on the fixed valve body, and one end of the connecting rod is movably inserted into the slot;

[0008] A toggle assembly for controlling the opening and closing of the movable valve body and the fixed valve body is provided between the movable valve body and the fixed valve body. Standard joints are installed at the opposite ends of the valve core assembly 1 and the valve core assembly 2, and a protective cover plate is hingedly installed on the outer side of the fixed valve body.

[0009] In a preferred embodiment, the toggle assembly includes a central shaft fixedly penetrating the fixed valve body and support studs fixed on both sides of the movable valve body, a swing arm is rotatably mounted between the two ends of the central shaft, arc grooves are provided on both sides of one end of the swing arm, the support stud is passed through the corresponding arc groove, and a rolling ring is rotatably mounted on the outer side of the support stud at a position corresponding to the arc groove;

[0010] The toggle assembly also includes a countersunk hole opened on the outside of the fixed valve body, a limit column is movably inserted in the countersunk hole, a fixing screw for limiting the limit column is fixed on the inside of the countersunk hole, and a spring seven is movably sleeved on the outside of the limit column between the fixing screw and the end face of the inner cavity of the countersunk hole.

[0011] The present invention also provides a testing device for the structural performance of a liquid injection valve, which is used to perform a pressure resistance test on a valve body and a standard joint of the above-mentioned liquid injection valve structure. The testing device comprises a box body, one side of which is provided with a pushing mechanism for loading materials, and the inside of the box body is provided with a clamping mechanism for clamping the pushed valve body and a pushing mechanism for pushing the clamping mechanism to shift;

[0012] The box body is also provided with a pressure-resistant detection mechanism for performing a pressure-resistant test on the valve body and an air-tight detection mechanism for performing a sealing test on the valve body, and the pushing mechanism is used to control the pressure-resistant detection mechanism and the air-tight detection mechanism to perform a linkage action;

[0013] The pressure-resistant detection mechanism consists of a pressure-applying part and an impact part.

[0014] In a preferred embodiment, the pushing mechanism includes a T-shaped slot opened on one side of the box body, a T-shaped support plate is movably inserted inside the T-shaped slot, an electric push rod is fixedly installed between the outside of the box body and the T-shaped support plate, and two correction angle plates are fixedly provided on the top of the T-shaped support plate.

[0015] In a preferred embodiment, the pushing mechanism includes an electric push rod 2 and a horizontal plate fixed inside the box body, the telescopic end of the electric push rod 2 is fixedly connected to a ring frame, an L-shaped plate is fixedly provided on the top of the horizontal plate, and a through groove is provided on the L-shaped plate;

[0016] The pushing mechanism also includes a dovetail bar fixed to the bottom of the inner cavity of the box body and two vertical rods arranged on the top of the dovetail bar, both ends of the two vertical rods are fixed with discs, the disc at the bottom end of one of the vertical rods is slidably mounted on the dovetail bar, and the disc at the bottom end of the other vertical rod is fixed on the dovetail bar, and springs six are movably sleeved on the outer sides of the two vertical rods.

[0017] In a preferred embodiment, the clamping mechanism comprises a movable plate slidably mounted on the ring frame, seats are provided at both ends of one side of the movable plate, a T-shaped slide groove corresponding to one of the seats is provided on the outer side of the movable plate, one of the seats is fixed on the outer side of the movable plate, and the other seat block is slidably connected to the inside of the T-shaped slide groove through a slide seat;

[0018] The two ends of the two seat blocks facing away from each other are fixedly connected with an L-shaped frame, and the two vertical rods are movably penetrated on the corresponding seat blocks, and the two ends of the spring six are respectively fixedly connected with the corresponding seat blocks and the disc located at the top of the vertical rod, and a spring clamping piece is provided between the two L-shaped frames.

[0019] In a preferred embodiment, the spring clamping member comprises a sleeve fixedly embedded on two L-shaped frames, wherein an air intake pipe movably penetrating the L-shaped frame is sleeved inside one of the sleeves, and a plug movably penetrating the L-shaped frame is sleeved inside the other sleeve, and a ring plate is fixedly provided on the outer side of the opposite ends of the air intake pipe and the plug, and a spring 2 is sleeved on the outer side of the air intake pipe and the plug to fix the ring plate and the L-shaped frame and the ring plate and the plug;

[0020] A sealing plate is arranged on the inner side of the two L-shaped frames, and a plug hole is opened at one end of the sealing plate close to the seat block. A guide rod one fixedly connected to the seat block is movably inserted inside the plug hole, and a spring one fixedly connecting the seat block and the corresponding sealing plate is sleeved on the outer side of the guide rod one.

[0021] In a preferred embodiment, the pressure-applying portion includes a plurality of L-shaped blocks fixed on the top of the movable plate, each L-shaped block has a sink groove at both ends of the inner side, a deflection inclined block is installed in one of the sink grooves through the rotation of the shaft rod, and a spring three fixedly connected to the deflection inclined block is fixed in another sink groove;

[0022] The pressure applying part also includes two blocking rods fixed at the bottom of the transverse plate.

[0023] In a preferred embodiment, the impact part includes two brackets fixedly arranged on the outer side of the horizontal plate, and a swing bar is rotatably installed between the two brackets through an axial rod. The swing bar extends to one end of the bottom of the horizontal plate, and an impact head and a spring four are fixedly arranged on both sides, and one end of the spring four is fixedly connected to the horizontal plate.

[0024] In a preferred embodiment, the airtight detection mechanism comprises a trapezoidal block 1 fixed to the outside of the movable plate and a trapezoidal block 2 fixed to the inside of the box body, and an inclined plate is fixedly connected between the trapezoidal block 2 and the inner wall of the box body;

[0025] The airtight detection mechanism also includes an F-shaped tube connected to both air inlet pipes and a bracket fixed to the bottom of the inner cavity of the box, a cover frame is provided on the top of the bracket, and two plug holes are provided at the four corners of the bottom of the cover frame, and two guide rods fixedly connected to the bracket are movably inserted inside each of the two plug holes, and a spring five fixedly connecting the cover frame and the bracket is sleeved on the outer side of the two guide rods, an air bag is fixedly provided between the cover frame and the bracket, and a connecting hose is provided between the outer side of the air bag and the F-shaped tube;

[0026] Limiting foot columns are fixedly arranged at the top of the bracket corresponding to the four corners of the inner side of the cover frame, and leakage holes are opened on the outer side of the cover frame.

[0027] Beneficial effects of the present invention:

[0028] 1. The liquid injection valve structure of the present invention adopts a combined design of a fixed valve body and a movable valve body, and allows the swing arm of the U-shaped structure to fit the two sides of the fixed valve body and rotate under the guidance and restriction of the support studs on both sides of the movable valve body, and uses the arc groove to guide the support studs to move inside the arc groove, so that the movable valve body connected to the support studs gradually approaches or moves away from the fixed valve body, thereby controlling the opening and closing of the liquid injection valve, which is convenient and labor-saving to operate, and the operation process is stable and reliable;

[0029] 2. The present invention uses a push mechanism, a clamping mechanism, a pushing mechanism, a pressure detection mechanism and an airtightness detection mechanism in coordination, which can not only realize the pressure resistance test of the standard joint on the injection valve, but also realize the multi-point pressure resistance test on the outer side of the valve body of the injection valve. After completing the pressure resistance test of the valve body, the overall airtightness of the injection valve can be tested, so that the pressure resistance test and airtightness test of the injection valve can be completed at the same time;

[0030] 3. The present invention can also add a pressure gauge on one end of the plug close to the air inlet pipe to test the pressure resistance inside the injection valve while detecting the air tightness of the injection valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the liquid injection valve of the present invention;

[0033] Figure 2 The present invention Figure 1 Middle overall top view;

[0034] Figure 3 The present invention Figure 2Schematic diagram of the AA section structure;

[0035] Figure 4 The present invention Figure 2 Schematic diagram of the cross-section structure along the BB axis;

[0036] Figure 5 The present invention Figure 2 Schematic diagram of the CC section structure;

[0037] Figure 6 The present invention Figure 2 Schematic diagram of the structure in the middle DD section;

[0038] Figure 7 It is a schematic diagram of the overall structure of the testing device of the present invention;

[0039] Figure 8 is a schematic diagram of the cross-sectional structure of the test device of the present invention in the rearward direction;

[0040] Fig. 9 It is a schematic diagram of the cross-sectional structure of the testing device of the present invention when viewed from the right;

[0041] Fig.10 It is a schematic diagram of the local structure of the testing device of the present invention.

[0042] Fig.11 It is a schematic structural diagram of the impact part of the pressure resistance detection mechanism of the present invention;

[0043] Fig.12 It is a schematic structural diagram of the pressure-applying part of the pressure-withstand detection mechanism of the present invention;

[0044] Fig.13 It is a partial structural schematic diagram of the airtight detection mechanism of the present invention.

[0045] The reference numerals in the figures are as follows: 1, fixed valve body; 2, movable valve body; 3, valve core assembly 1; 3-1, outer sleeve 1; 3-2, inner sleeve; 3-3, threaded joint 1; 3-4, three-head limit sleeve 1; 3-5, support screw; 3-6, movable valve core; 3-7, spring seat; 4, valve core assembly 2; 4-1, outer sleeve 2; 4-2, threaded joint 2; 4-3, three-head limit sleeve 2; 4-4, valve core seat 1; 4-5, valve core seat 2; 5. Box; 6. Pushing mechanism; 61. T-type support plate; 62. Electric push rod 1; 63. Angle plate for correcting deviation; 7. Clamping mechanism; 71. Movable plate; 72. Sealing block; 73. L-shaped frame; 74. Casing; 75. Inlet pipe; 76. Plug; 77. Sealing plate; 78. Guide rod 1; 79. Spring 1; 710. Ring plate; 711. Spring 2; 712. T-type slide; 8. Pressure resistance detection mechanism; 81. L-shaped block; 82. sink; 83, deflection inclined block; 84, spring three; 85, bracket; 86, swing bar; 87, impact head; 88, spring four; 89, stop rod; 9, airtight detection mechanism; 91, F-type tube; 92, trapezoidal block one; 93, trapezoidal block two; 94, inclined plate; 95, bracket; 96, cover frame; 97, limit foot column; 98, connecting hose; 99, airbag; 910, guide rod two; 911, spring five; 912, leak hole; 1 0. Pushing mechanism; 101. Electric push rod two; 102. Horizontal plate; 103. L-shaped plate; 104. Ring frame; 105. Through slot; 106. Dovetail strip; 107. Vertical rod; 108. Disc; 109. Spring six; 11. Connecting rod; 12. Protective cover; 13. Standard joint; 14. Central axis; 15. Swing arm; 16. Fixing screw; 17. Limiting column; 18. Spring seven; 19. Support stud; 20. Rolling ring. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] The liquid injection valve structure of the present invention is a component in a liquid pressure system, and is a part of a control element in the liquid pressure system, and is used to control the on and off of the fluid in the liquid pressure system;

[0048] The testing device for the structural performance of a liquid injection valve of the present invention belongs to a type of mechanical sensor for detecting valve performance and is used for testing the pressure resistance of the liquid injection valve structure.

[0049] Refer to the instruction manual Figure 1-6A liquid injection valve structure according to an embodiment of the present invention comprises a valve body, the valve body being composed of a fixed valve body 1 and a movable valve body 2, two sets of valve core components 1 3 being installed on the fixed valve body 1, a valve core component 2 4 corresponding to the valve core component 1 3 being installed on the movable valve body 2, a connecting rod 11 being fixedly provided on the movable valve body 2, a slot corresponding to the connecting rod 11 being opened on the fixed valve body 1, and one end of the connecting rod 11 being movably plugged into the slot;

[0050] A toggle assembly for controlling the opening and closing of the movable valve body 2 and the fixed valve body 1 is provided between the movable valve body 2 and the fixed valve body 1. Standard joints 13 are installed at the opposite ends of the valve core assembly 1 3 and the valve core assembly 2 4. A protective cover plate 12 is hingedly installed on the outer side of the fixed valve body 1.

[0051] It should be noted that the valve core assembly 3 is composed of an outer sleeve 3-1, an inner sleeve 3-2, a threaded joint 3-3, a three-head limit sleeve 3-4, a support screw 3-5, a movable valve core 3-6 and a spring seat 3-7, wherein the outer sleeve 3-1 is fixedly embedded in the fixed valve body 1, the threaded joint 3-3 is threadedly connected between the outer sleeve 3-1 and the inner sleeve 3-2, the three-head limit sleeve 3-4 is fixed inside the threaded joint 3-3, the support screw 3-5 is fixed on the three-head limit sleeve 3-4, the movable valve core 3-6 and the spring seat 3-7 are arranged inside the outer sleeve 3-1, and a connecting spring 1 arranged on the outside of the movable valve core 3-6 is connected between the spring seat 3-7 and the inner sleeve 3-2;

[0052] The valve core assembly 24 is composed of an outer sleeve 24-1, a threaded joint 24-2, a three-head limit sleeve 24-3, a valve core seat 1 4-4 and a valve core seat 2 4-5, wherein the outer sleeve 24-1 is fixedly embedded in the moving valve body 2, the threaded joint 24-2 is threadedly connected to the inside of the outer sleeve 24-1, the three-head limit sleeve 24-3 is fixed to the inside of the threaded joint 24-2, the valve core seat 1 4-4 and the valve core seat 2 4-5 are arranged in the outer sleeve 24-1, and a connecting spring 2 is connected between the valve core seat 1 4-4 and the valve core seat 2 4-5 and between the valve core seat 1 4-4 and the three-head limit sleeve 2 4-3.

[0053] Specifically, the toggle assembly includes a central axis 14 fixedly penetrating the fixed valve body 1 and support studs 19 fixed on both sides of the movable valve body 2, a swing arm 15 is rotatably mounted between the two ends of the central axis 14, arc grooves are provided on both sides of one end of the swing arm 15, the support stud 19 is passed through the corresponding arc groove, and a rolling ring 20 is rotatably mounted on the outer side of the support stud 19 at a position corresponding to the arc groove, wherein the setting of the rolling ring 20 can effectively reduce the resistance encountered by the support stud 19 during the movement along the arc groove on the swing arm 15;

[0054] The toggle assembly also includes a countersunk hole opened on the outside of the fixed valve body 1, and a limiting column 17 is movably inserted inside the countersunk hole. A fixing screw 16 for limiting the limiting column 17 is fixedly provided on the inside of the countersunk hole, and a spring 7 18 is movably sleeved on the outside of the limiting column 17 at a position between the fixing screw 16 and the end surface of the inner cavity of the countersunk hole, wherein the fixing screw 16 is used to prevent the limiting column 17 from directly and completely disengaging from the countersunk hole under the action of the compression restoring force of the spring 7 18, and when the spring 7 18 is in a natural state and the swing arm 15 does not block the countersunk hole on the fixed valve body 1, the upper end of the limiting column 17 will pop out of the countersunk hole under the action of the spring 7 18, so as to lock the swing arm that swings to a certain angle.

[0055] It should be noted that when the injection valve is in the open state, the limit column 17 is completely pressed inside the counterbore by the swing arm 15, and the spring 7 18 is in a compressed state at this time. In addition, the swing arm 15 is designed with a U-shaped structure so that it can rotate in contact with both sides of the fixed valve body 1. In the process of controlling the movable valve body 2 to move in the direction of the fixed valve body 1 so that the valve core assembly 1 3 and the valve core assembly 2 4 are connected, the swing arm 15 is moved along the arc groove toward the direction of the support stud 19, so that the swing arm 15 rotates around the central axis, that is, the support stud 19 moves from the opening position of the arc groove to the inside of the arc groove, and as the swing arm 15 rotates, the support stud 19 will gradually approach the fixed valve body 1, thereby driving the movable valve body 2 to approach the fixed valve body 1 synchronously;

[0056] During this process, the outer sleeve 2 4-1 on the valve core component 2 4 will enter the inner sleeve 1 3-1 on the valve core component 1 3, and push the spring seat 3-7 to move inside the outer sleeve 1 3-1, exposing the support screw 3-5, and the support screw 3-5 will push the valve core seat 2 4-5 to move inside the outer sleeve 2 4-1, and use the valve core seat 2 4-5 to push the corresponding connection spring 2 to generate a rebound force to push the valve core seat 1 4-4 to move in the direction of the three-head limit sleeve 2 4-3, so that the connection spring 2 at the corresponding position is compressed, so that the valve core component 1 3 and the valve core component 2 4 can be connected. At this time, the fluid being transported (the present invention refers to the emulsion) will enter the valve core component 1 3 from the valve core component 2 4;

[0057] When the swing arm 15 rotates to pass the countersunk hole, the limit column 17 will be pushed out of the countersunk hole under the compression restoring force of the spring seven 18 to stop the rotated swing arm 15. When the stop state needs to be released, the limit column 17 only needs to be pressed into the countersunk hole to continue the operation, which is convenient to operate.

[0058] Refer to the instruction manual Figure 7-9A testing device for the performance of a liquid injection valve structure according to an embodiment of the present invention is used to perform a pressure test on a valve body and a standard joint 13 of the liquid injection valve structure. The testing device comprises a box body 5, a pushing mechanism 6 for loading materials is provided on one side of the box body 5, a clamping mechanism 7 for clamping the pushed valve body and a pushing mechanism 10 for pushing the clamping mechanism 7 to shift are provided inside the box body 5;

[0059] The box body 5 is also provided with a pressure detection mechanism 8 for performing a pressure test on the valve body and an airtight detection mechanism 9 for performing a sealing test on the valve body. The pushing mechanism 10 is used to control the pressure detection mechanism 8 and the airtight detection mechanism 9 to perform a linkage action.

[0060] The withstand voltage detection mechanism 8 is composed of a pressure applying portion and an impact portion.

[0061] It should be noted that the present invention pushes the injection valve to be tested to the clamping station through the pushing mechanism 6, and uses the clamping mechanism 7 to perform a pressure resistance test on the standard joint 13 on the injection valve to be tested during the process of entering the clamping station, and after the injection valve to be tested completely enters the clamping station, the clamping mechanism 7 is used to automatically clamp and position the injection valve to be tested, and then the pushing mechanism 10 is used to drive the pressure resistance testing mechanism 8 and the air tightness testing mechanism 9 to perform a linkage action, thereby completing the pressure resistance test of the valve body and the air tightness test of the injection valve in one step, which is quick and convenient.

[0062] Specifically, Figure 7 and Fig. 9 As shown, the pushing mechanism 6 includes a T-shaped slot opened on one side of the box body 5, a T-shaped support plate 61 is movably inserted inside the T-shaped slot, an electric push rod 62 is fixedly installed between the outer side of the box body 5 and the T-shaped support plate 61, and two correcting angle plates 63 are fixedly provided on the top of the T-shaped support plate 61, wherein the correcting angle plates 63 are used to correct the position of the injection valve to be tested placed on the T-shaped support plate 61 so that it faces the clamping mechanism 7 and enters the clamping position.

[0063] It should be noted that in the process of loading the injection valve to be tested, first Figure 1 The injection valve to be tested is shown to rotate clockwise so that the side of the cover plate 12 is in contact with the top of the T-shaped support plate 61 on the pushing mechanism 6, and the injection valve to be tested is moved closer to the vertical section on the T-shaped support plate 61. During this process, two correction angle plates 63 are used to correct the position of the moving injection valve to be tested, so that the injection valve to be tested can be accurately pushed to the clamping station for clamping.

[0064] Specifically, Figure 7-8 and Figure 10-12As shown, the pushing mechanism 10 includes an electric push rod 101 and a horizontal plate 102 fixed inside the box 5. The telescopic end of the electric push rod 101 is fixedly connected to a ring frame 104. An L-shaped plate 103 is fixedly provided on the top of the horizontal plate 102. A through slot 105 is opened on the L-shaped plate 103.

[0065] The pushing mechanism 10 also includes a dovetail bar 106 fixed to the bottom of the inner cavity of the box body 5 and two vertical rods 107 arranged at the top of the dovetail bar 106, and both ends of the two vertical rods 107 are fixed with discs 108, and the disc 108 at the bottom end of one of the vertical rods 107 is slidably mounted on the dovetail bar 106, wherein the dovetail bar 106 can be used to guide and limit the slidably mounted vertical rod 107, and the disc 108 at the bottom end of the other vertical rod 107 is fixed on the dovetail bar 106, and the outer sides of the two vertical rods 107 are movably sleeved with springs 109;

[0066] The clamping mechanism 7 includes a movable plate 71 slidably sleeved on the ring frame 104, and seat blocks 72 are provided at both ends of one side of the movable plate 71. A T-shaped slide groove 712 corresponding to one of the seat blocks 72 is provided on the outer side of the movable plate 71, and one of the seat blocks 72 is fixed on the outer side of the movable plate 71, and the other seat block 72 is slidably connected to the inside of the T-shaped slide groove 712 through a slide seat, wherein the setting of the T-shaped slide groove 712 can ensure that when the toggle assembly is used to drive the movable valve body 2 to move toward the fixed valve body 1 during the subsequent detection process, the corresponding seat block 72 can move accordingly, so that the detection process can proceed smoothly;

[0067] The two seat blocks 72 are fixedly connected to an L-shaped frame 73 at one end opposite to each other, and two vertical rods 107 are movably arranged on the corresponding seat blocks 72, and the two ends of the spring six 109 are respectively fixedly connected to the corresponding seat blocks 72 and the disc 108 located at the top of the vertical rod 107, wherein the spring six 109 can be used to control the height of the movable plate 71, and a spring clamping piece is provided between the two L-shaped frames 73, wherein the spring clamping piece can be used to automatically clamp and position the injection valve to be tested that has completely entered the clamping position;

[0068] The pressure-applying part includes a plurality of L-shaped blocks 81 fixed on the top of the movable plate 71. Each L-shaped block 81 has a sink groove 82 at both ends of the inner side. A deflection inclined block 83 is installed in one of the sink grooves 82 through the rotation of the shaft rod. A spring 3 84 fixedly connected to the deflection inclined block 83 is fixed in another sink groove 82. When the spring 3 84 is in the natural state, the deflection inclined block 83 is in the state as shown in FIG. Fig.12 The state shown in FIG. 1 and the inclined surface side of the deflection inclined block 83 moves rightward toward the movable plate 71 (refer to FIG. 1 ). Figure 7 The movable plate 71 moves in the direction shown in the figure, and the following descriptions of the moving direction of the movable plate 71 refer to the direction of the figure), so that the movable plate 71 uses the inclined surface on the deflection inclined block 83 to squeeze the pressure end of the impact part to move downward during the movement;

[0069] The pressure applying part further includes two blocking rods 89 fixed at the bottom of the horizontal plate 102, wherein the blocking rods 89 can be used to resist the swing arm 15 of the injection valve, so that in the process of pushing the movable plate 71 to move rightward, the blocking rods 89 are used to move the swing arm 15 to rotate around the central axis 14;

[0070] The impact part includes two brackets 85 fixedly arranged on the outside of the horizontal plate 102, and a swing bar 86 is rotatably installed between the two brackets 85. The swing bar 86 extends to the bottom of the horizontal plate 102, and an impact head 87 and a spring 88 are fixedly arranged on both sides of the end thereof, and one end of the spring 88 is fixedly connected to the horizontal plate 102. When the spring 88 is in a natural state, the swing bar 86 is in a state as shown in FIG. Fig.11 The impact end of the impact head 87 moves in contact with the outer side of the injection valve to be tested, so that after the spring four 88 is compressed, its restoring force pushes the impact head 87 to perform a pressure test on the outer side of the injection valve.

[0071] It should be noted that, in the process of carrying out the pressure resistance test on the target injection valve (i.e., the injection valve to be tested), the T-shaped support plate 61 carrying the injection valve to be tested is pushed to the clamping station by the electric push rod 1 62, so that the standard joints 13 at both ends of the injection valve are used to squeeze the spring clamping member on the clamping mechanism 7, and the reverse thrust of the clamping end of the spring clamping member is used to prevent the injection valve from directly entering the clamping station, so as to achieve the purpose of using the reverse thrust of the clamping end of the spring clamping member to test the pressure resistance strength of the standard joint 13;

[0072] When the injection valve to be tested is pushed and overcomes the reverse thrust of the clamping end of the spring clamping piece and enters the clamping position, the clamping end of the spring clamping piece will automatically complete the clamping positioning of the target injection valve. At this time, the blocking rod 89 just abuts against the swing arm of the target injection valve, and the pushing mechanism 6 is reset to the initial state. Then the electric push rod 101 will push the ring frame 104 to move right, thereby driving the movable plate 71 to move right, and then driving the seat block 72 and the L-shaped frame 73 on the side where the plug 76 is located to move right synchronously with the movable plate 71. Since the vertical rod 107 on the side where the air intake pipe 75 is located is fixed, When the vertical rod 107 on the side where the plug 76 is located moves to the right under the dual restrictions of the dovetail strip 106 and the through groove 105, the seat block 72 on the side where the air inlet pipe 75 is located will move along the T-shaped slide groove 712 toward the seat block 72 on the side where the plug 76 is located. During this process, the blocking rod 89 will push the swing arm 15 to rotate around the central axis 14, so that the rolling ring 20 sleeved on the support stud 19 on the target injection valve will move along the arc groove on the swing arm 15, thereby driving the dynamic valve body 2 to move in the direction of the fixed valve body 1, thereby realizing the conduction between the valve core assembly 1 3 and the valve core assembly 2 4;

[0073] In the process of controlling the movable valve body 2 to move toward the fixed valve body 1 by the swing arm 15 so that the valve core assembly 1 3 and the valve core assembly 2 4 are connected, as the movable plate 71 gradually moves to the right, the multiple groups of pressure-applying parts on the top of the movable plate 71 will intermittently apply pressure to the pressure-receiving end of the impact part one by one, so that the stamping part intermittently tests the pressure resistance strength of the valve body of the target injection valve. The specific process is as follows:

[0074] In the process of using the pressure-applying part on the top of the movable plate 71 to apply pressure to the pressure-receiving end of the impact part, as the movable plate 71 gradually moves to the right, the inclined surface of the deflection inclined block 83 on the pressure-applying part will gradually squeeze the swing bar 86. Since the deflection inclined block 83 is blocked by the L-shaped block 81 and cannot flip, the deflection inclined block 83 in the rightward movement will press the pressure-receiving end of the swing bar 86 to deflect downward, while the impact end of the swing bar 86 will tilt upward to squeeze the spring four 88. When the pressure-receiving end of the swing bar 86 passes the deflection inclined block 83 at the current position, the pressure-receiving end of the impact part will instantly rebound under the compression restoring force of the spring four 88, and drive the impact head 87 to perform a pressure resistance test on the valve body of the target injection valve. The design of multiple sets of pressure-applying parts can realize continuous multi-point detection of the valve body of the target injection valve.

[0075] On the contrary, when the pressure-applying part moves to the left along with the movable plate 71, since the deflection bevel block 83 is in contact with the swing bar 86 in a straight section, the swing bar 86 will push the deflection bevel block 83 to swing during the pressure-applying part's leftward movement, and after the deflection bevel block 83 passes over the swing bar 86, the deflection bevel block 83 will quickly return to its original position under the action of the restoring force of the spring three 84.

[0076] Specifically, Fig.10 As shown, the spring clamping member includes a sleeve 74 fixedly embedded on two L-shaped frames 73, wherein an air inlet pipe 75 movably penetrating the L-shaped frame 73 is sleeved inside one of the sleeves 74, and a plug 76 movably penetrating the L-shaped frame 73 is sleeved inside the other sleeve 74, and a ring plate 710 is fixedly provided on the outer sides of the opposite ends of the air inlet pipe 75 and the plug 76, and a spring 711 is sleeved on the outer sides of the air inlet pipe 75 and the plug 76 for fixedly connecting the ring plate 710 and the L-shaped frame 73 and the ring plate 710 and the plug 76;

[0077] Sealing plates 77 are provided on the inner sides of the two L-shaped frames 73, wherein the sealing plates 77 are arranged as a Y-shaped structure, so that when the injection valve to be tested is pushed to move toward the clamping station, the position of the injection valve can be assisted to be adjusted, and a plug hole 1 is provided at one end of the sealing plate 77 close to the seat block 72, and a guide rod 1 78 fixedly connected to the seat block 72 is movably inserted inside the plug hole 1, and a spring 1 79 fixedly connecting the seat block 72 and the corresponding sealing plate 77 is sleeved on the outer side of the guide rod 1 78, wherein the plug-in relationship between the guide rod 1 78 and the sealing plate 77 can be utilized to ensure that the injection valve to be tested being pushed can only squeeze the sealing plate 77 in a straight line direction.

[0078] It should be noted that when the spring 1 79 is in a natural state, the sealing plate 77 just blocks the air inlet pipe 75 and the plug 76 on the side, and in this state, the spring 2 711 is in a compressed state. Once the blocking of the sealing plate 77 is released, the air inlet pipe 75 and the plug 76 will pop out instantly under the restoring force of the spring 2 711. In the process of clamping and positioning the target injection valve by using the spring clamping member, as the target injection valve moves toward the clamping station, the spring clamping member installed on the target injection valve The standard connector 13 on the door will first contact the sealing plate 77, and as the target injection valve continues to be pushed forward, the standard connector 13 on the target injection valve will squeeze the sealing plate 77 in the direction of the movable plate 71, so that the spring 1 79 is compressed. When the sealing plate 77 is pushed to completely release the blockage of the air inlet pipe 75, the air inlet pipe 75 and the plug 76 will be inserted into the standard connector 13 at the corresponding end under the action of the compression restoring force of the spring 2 711 at the position, completing the automatic clamping and centering of the target injection valve.

[0079] Specifically, Figure 8-10 As shown in the figure, the airtight detection mechanism 9 includes a trapezoidal block 1 92 fixed to the outside of the movable plate 71 and a trapezoidal block 2 93 fixed to the inside of the box 5, and an inclined plate 94 is fixedly connected between the trapezoidal block 2 93 and the inner wall of the box 5, wherein the inclined plate 94 can be used to ensure the stability of the trapezoidal block 2 93 during the pressure process;

[0080] The airtight detection mechanism 9 also includes an F-shaped tube 91 connected to both air inlet pipes 75 and a bracket 95 fixed to the bottom of the inner cavity of the box body 5. A cover frame 96 is provided on the top of the bracket 95. Two plug holes are provided at the four corners of the bottom of the cover frame 96. A guide rod 910 fixedly connected to the bracket 95 is movably inserted inside each of the two plug holes. A spring 911 fixedly connecting the cover frame 96 and the bracket 95 is sleeved on the outer side of the guide rod 910. The plug-in relationship between the guide rod 910 and the cover frame 96 can be used to ensure that the cover frame 96 can only be squeezed in the vertical direction. An air bag 99 is fixedly provided between the cover frame 96 and the bracket 95. A connecting hose 98 is provided between the outer side of the air bag 99 and the F-shaped tube 91.

[0081] Limiting feet 97 are fixedly provided at the four corners of the inner side of the cover frame 96 corresponding to the top of the bracket 95, wherein the limiting feet 97 are set to an L-shaped structure, and the top of the limiting feet 97 is set to an arc structure. On the one hand, the airbag 99 can be limited during the compression process to prevent the airbag 99 from deviating from the position. On the other hand, it can also prevent the airbag 99 from being punctured by the top of the limiting feet 97 during the compression process to cause leakage, thereby affecting the progress of the airtightness detection process. A leakage hole 912 is opened on the outside of the cover frame 96, wherein the setting of the leakage hole 912 can ensure that in the process of squeezing the airbag 99, the water inside the cover frame 96 is discharged outward, thereby reducing the resistance encountered by the cover frame 96 during the downward pressing process.

[0082] It should be noted that a pressure gauge (not specifically shown in the accompanying drawings) can be added to the end of the plug 76 close to the air inlet pipe 75 to test the pressure resistance inside the injection valve while detecting the air tightness of the injection valve. At this time, the air pressure detector should be embedded in the plug 76 and will not affect the movement of the sealing plate 77.

[0083] After the movable valve body 2 is controlled to move toward the fixed valve body 1 by the swing arm 15 so that the valve core assembly 1 3 and the valve core assembly 2 4 are completely connected, as the movable plate 71 continues to move rightward, the inclined surface on the trapezoidal block 1 92 will gradually contact the inclined surface on the trapezoidal block 2 93, and then under the restriction of the trapezoidal block 2 93, the trapezoidal block 1 92 drives the movable plate 71 to move rightward while moving downward, thereby driving the target injection valve to move downward, and using the downward moving target injection valve to vertically press the cover frame 96 downward, and the downward moving cover frame 96 will press the spring 5 911 and the airbag 99 downward along the direction of the guide rod 2 910, so that the air inside the airbag 99 is transported to the F-type tube 91 through the connecting hose 98, and enters the corresponding intake pipe 75 respectively;

[0084] Since the valve core component 1 3 and the valve core component 2 4 are connected, and the standard connector 13 on the valve core component 1 3 is completely blocked, the air pressure inside the target injection valve will increase during the continuous squeezing of the airbag 99. If the air tightness of the target injection valve is not good, the overflowed gas will form bubbles in the water and float up. On the contrary, the air tightness of the target injection valve is good.

[0085] In addition, during the air tightness test, since the air pressure inside the target injection valve tends to gradually increase, a pressure gauge installed on the plug 76 can be used to detect the air pressure changes inside the target injection valve, thereby testing the internal pressure resistance of the target injection valve.

[0086] In the above technical solution, the electric push rod 1 62 and the electric push rod 2 101 mentioned are both electric push rods of model HB-DJ801, and the pressure gauge mentioned is a digital pressure gauge of model HG03-DP-2000B.

[0087] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A testing device for the structural performance of a liquid injection valve, the liquid injection valve structure comprising a valve body, characterized in that: The valve body is composed of a fixed valve body (1) and a movable valve body (2); two sets of valve core components (1) are installed on the fixed valve body (1); a valve core component (2) (4) corresponding to the valve core component (3) is installed on the movable valve body (2); a connecting rod (11) is fixedly provided on the movable valve body (2); a slot corresponding to the connecting rod (11) is opened on the fixed valve body (1), and one end of the connecting rod (11) is movably inserted into the slot; A toggle assembly for controlling the opening and closing of the movable valve body (2) and the fixed valve body (1) is provided between the movable valve body (2) and the fixed valve body (1); a standard joint (13) is installed at the opposite ends of the valve core assembly (3) and the valve core assembly (4); and a protective cover plate (12) is hingedly installed on the outer side of the fixed valve body (1); The testing device is used to perform a pressure test on a valve body and a standard joint (13) on a liquid injection valve structure, and comprises a box body (5), a material pushing mechanism (6) for loading materials is provided on one side of the box body (5), a material clamping mechanism (7) for clamping the pushed valve body and a pushing mechanism (10) for pushing the material clamping mechanism (7) to shift are provided inside the box body (5); The box body (5) is further provided with a pressure-resistant detection mechanism (8) for performing a pressure-resistant test on the valve body and an air-tightness detection mechanism (9) for performing a sealing test on the valve body, and the pushing mechanism (10) is used to control the pressure-resistant detection mechanism (8) and the air-tightness detection mechanism (9) to perform a linkage action; The pressure-resistant detection mechanism (8) consists of a pressure-applying part and an impact part.

2. A testing device for the structural performance of a liquid injection valve according to claim 1, characterized in that: The toggle assembly comprises a central axis (14) fixedly penetrating the fixed valve body (1) and support studs (19) fixed on both sides of the movable valve body (2); a swing arm (15) is rotatably mounted between the two ends of the central axis (14); arc grooves are provided on both sides of one end of the swing arm (15); the support studs (19) are inserted into the corresponding arc grooves, and a rolling ring (20) is rotatably mounted on the outer side of the support studs (19) at positions corresponding to the arc grooves; The toggle assembly further comprises a countersunk hole formed on the outside of the fixed valve body (1), a limit post (17) being movably inserted into the countersunk hole, a fixing screw (16) for limiting the limit post (17) being fixedly provided on the inside of the countersunk hole, and a spring (18) being movably sleeved on the outside of the limit post (17) at a position between the fixing screw (16) and the end surface of the inner cavity of the countersunk hole.

3. A testing device for the structural performance of a liquid injection valve according to claim 1, characterized in that: The material pushing mechanism (6) comprises a T-shaped slot opened on one side of the box body (5), a T-shaped support plate (61) is movably inserted in the T-shaped slot, an electric push rod (62) is fixedly installed between the outer side of the box body (5) and the T-shaped support plate (61), and two deflection correction angle plates (63) are fixedly provided on the top of the T-shaped support plate (61).

4. A testing device for the structural performance of a liquid injection valve according to claim 1, characterized in that: The pushing mechanism (10) comprises a second electric push rod (101) and a horizontal plate (102) fixed inside the box body (5); the telescopic end of the second electric push rod (101) is fixedly connected to a ring frame (104); an L-shaped plate (103) is fixedly provided on the top of the horizontal plate (102); and a through groove (105) is provided on the L-shaped plate (103); The pushing mechanism (10) further comprises a dovetail bar (106) fixed to the bottom of the inner cavity of the box body (5) and two vertical rods (107) arranged at the top of the dovetail bar (106), and circular discs (108) are fixedly provided at both ends of the two vertical rods (107), wherein the circular disc (108) at the bottom end of one of the vertical rods (107) is slidably mounted on the dovetail bar (106), and the circular disc (108) at the bottom end of the other vertical rod (107) is fixed on the dovetail bar (106), and springs (109) are movably sleeved on the outer sides of the two vertical rods (107).

5. A testing device for the structural performance of a liquid injection valve according to claim 4, characterized in that: The clamping mechanism (7) comprises a movable plate (71) slidably sleeved on the ring frame (104), a seat block (72) is provided at both ends of one side of the movable plate (71), a T-shaped slide groove (712) corresponding to one of the seat blocks (72) is provided on the outer side of the movable plate (71), one of the seat blocks (72) is fixed on the outer side of the movable plate (71), and the other seat block (72) is slidably connected to the inside of the T-shaped slide groove (712) via a slide seat; The two seat blocks (72) are fixedly connected to an L-shaped frame (73) at opposite ends, and the two vertical rods (107) are movably arranged on the corresponding seat blocks (72), and the two ends of the spring (109) are respectively fixedly connected to the corresponding seat blocks (72) and the disc (108) located at the top of the vertical rod (107), and a spring clamping member is provided between the two L-shaped frames (73).

6. A testing device for the structural performance of a liquid injection valve according to claim 5, characterized in that: The spring clamping member comprises a sleeve (74) fixedly embedded on two L-shaped frames (73), wherein an air intake pipe (75) movably penetrating the L-shaped frame (73) is sleeved inside one of the sleeves (74), and a plug (76) movably penetrating the L-shaped frame (73) is sleeved inside the other sleeve (74), and an annular plate (710) is fixedly provided on the outer sides of the opposite ends of the air intake pipe (75) and the plug (76), and a spring (711) is sleeved on the outer sides of the air intake pipe (75) and the plug (76) for fixedly connecting the annular plate (710) and the L-shaped frame (73) and the annular plate (710) and the plug (76); A sealing plate (77) is provided on the inner side of the two L-shaped frames (73); an insertion hole (1) is provided on one end of the sealing plate (77) close to the seat block (72); a guide rod (78) fixedly connected to the seat block (72) is movably inserted in the insertion hole; a spring (79) fixedly connected to the seat block (72) and provided on the outer side of the guide rod (78) is provided.

7. A testing device for the structural performance of a liquid injection valve according to claim 5, characterized in that: The pressure-applying portion comprises a plurality of L-shaped blocks (81) fixed to the top of the movable plate (71), each L-shaped block (81) having a sink groove (82) at both ends of its inner side, wherein a deflection inclined block (83) is rotatably mounted in one of the sink grooves (82), and a spring three (84) fixedly connected to the deflection inclined block (83) is fixedly mounted in another sink groove (82); The pressure applying portion further comprises two blocking rods (89) fixed at the bottom of the transverse plate (102).

8. A testing device for the structural performance of a liquid injection valve according to claim 4, characterized in that: The impact part comprises two brackets (85) fixedly arranged on the outside of the horizontal plate (102), a swing bar (86) being rotatably mounted between the two brackets (85) via an axle rod, an impact head (87) and a spring four (88) being fixedly arranged on both sides of one end of the swing bar (86) extending to the bottom of the horizontal plate (102), and one end of the spring four (88) being fixedly connected to the horizontal plate (102).

9. A testing device for the structural performance of a liquid injection valve according to claim 6, characterized in that: The airtightness detection mechanism (9) comprises a trapezoidal block 1 (92) fixed on the outside of the movable plate (71) and a trapezoidal block 2 (93) fixed on the inside of the box body (5), and an inclined plate (94) is fixedly connected between the trapezoidal block 2 (93) and the inner wall of the box body (5); The airtight detection mechanism (9) further comprises an F-shaped tube (91) connected to both air inlet pipes (75) and a bracket (95) fixed to the bottom of the inner cavity of the box body (5); a cover frame (96) is provided on the top of the bracket (95); two plug holes are provided at four corners of the bottom of the cover frame (96); a guide rod (910) fixedly connected to the bracket (95) is movably inserted inside each of the two plug holes; a spring (911) fixedly connecting the cover frame (96) and the bracket (95) is sleeved on the outside of the guide rod (910); an air bag (99) is fixedly provided between the cover frame (96) and the bracket (95); and a connecting hose (98) is provided between the outside of the air bag (99) and the F-shaped tube (91); Limiting foot posts (97) are fixedly provided at the top of the bracket (95) at the four inner corners corresponding to the cover frame (96), and a leakage hole (912) is opened on the outer side of the cover frame (96).

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