Valve body high-pressure airtight micro-leakage test equipment

Abstract

The utility model relates to the technical field of detection, in particular to a valve body high-pressure airtight micro-leakage test device, which comprises a frame body, the frame body comprises a seat plate at the lower end, and a detection station is arranged on the seat plate and is used for placing a valve body to be detected and enabling the valve body to be vertically arranged. A first sealing structure is arranged between the lower end of the valve body and the detection station and can seal a lower mounting hole of the valve body; a vertical movement control structure is further arranged on the frame body, the vertical movement control structure comprises a mounting plate horizontally located above the seat plate, and sealing components are arranged on the mounting plate and directly face the side cavity hole, the upper mounting hole and the vertical hole respectively and can be used for sealing the side cavity hole, the upper mounting hole and the vertical hole respectively; the air inflation valve has the advantages that the valve body can be better sealed and inflated, and the air inflation valve is more convenient to operate and use.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a valve body high-pressure airtight micro-leakage testing device. Background Technology

[0002] like Figure 1 and Figure 2 The diagram shows a valve body structure; this valve body is usually cast and then machined, and finally its airtightness needs to be tested.

[0003] It includes a valve body with a valve cavity inside. The valve body has an upper mounting hole 1 and a lower mounting hole 2 at its upper and lower ends, respectively, corresponding to the valve cavity. On one side of the valve body, an upper connector and a lower connector protrude horizontally outwards, corresponding to the upper and lower ends of the valve cavity. Each upper and lower connector has an upper connecting hole 3 and a lower connecting hole 4, respectively, which communicate with the upper and lower ends of the valve cavity. A mating head protrudes horizontally outwards from one side of the inner end of the lower connector, with a connecting port 5 communicating with the lower connecting hole. A valve side body is integrally formed on one side of the valve body. The upper end of the valve side body has a blind hole and a side cavity hole 6 with an open upper end. A connecting hole is provided on the inner circumferential wall of the side cavity hole, communicating with the valve cavity. An upper mating head and a lower mating head are provided at the lower end of the valve side body, with upper mating holes 7 and lower mating holes 8 corresponding to the upper and lower mating heads, respectively, which communicate with the side cavity hole. A vertically upward-facing docking post is provided on the lower docking head, and a vertical hole 9 is provided on the docking post, communicating with the lower docking hole. A first protruding post and a second protruding post are respectively provided at the lower end of the valve body and the upper end of the side valve body, each protruding outwards. A lower vent hole 10 and an upper vent hole 11 are respectively provided on the first and second protruding posts. A connecting rib 12 is also integrally formed between the upper and lower connectors. During airtightness testing, it is necessary to ensure that all parts of the valve body are sealed and pressurized to a preset pressure value to complete the test.

[0004] Therefore, how to design a valve body high-pressure airtightness micro-leakage testing device with a simpler and more reasonable structural design, better sealing and inflation of the valve body, and easier operation and use has become a technical problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is how to design a valve body high-pressure airtight micro-leakage testing device with a simpler and more reasonable structural design, which can better seal and inflate the valve body and is more convenient to operate and use.

[0006] To achieve the above objectives, this utility model provides a valve body high-pressure airtightness micro-leakage testing device, including a frame, a base plate at the lower end of the frame, a testing station on the base plate for placing the valve body to be tested and arranging the valve body vertically, a first sealing structure between the lower end of the valve body and the testing station for sealing the lower mounting hole of the valve body; a vertical movement control structure is also provided on the frame, the vertical movement control structure including a mounting plate horizontally located above the base plate, sealing components are provided on the mounting plate facing the side cavity hole, the upper mounting hole and the vertical hole respectively, and each can be used to seal the side cavity hole, the upper mounting hole and the vertical hole; a longitudinal movement control structure is provided at each end of the base plate, and a first sealing component is installed at the working end of each longitudinal movement control structure. The first mounting block has horizontally arranged plug rods, air inflators, and sealing heads on its respective upper and lower connecting holes and connection holes on the valve body. The plug rods and sealing heads can seal the upper and lower connecting holes, respectively, and the air inflator can communicate with the lower connecting hole for air inflating and airtightness testing. The second mounting block has sealing rods on its respective lower and upper air outlet holes, capable of sealing them. A lateral movement control structure is located on one side of the seat plate. A support block is mounted on the working end of the lateral movement control structure, and plugs are provided on the support block on its respective upper and lower connecting holes, capable of sealing them.

[0007] Thus, the aforementioned high-pressure airtightness micro-leakage testing equipment for valve bodies features seals for each of the valve body's lower mounting hole, side cavity hole, upper mounting hole, vertical hole, upper docking hole, connecting hole, lower vent hole, upper vent hole, upper connecting hole, and lower connecting hole, enabling better sealing of the entire valve body. Furthermore, the use of an inflation pipe connected to the lower docking hole for bottom-up inflation allows for more effective airtightness testing. Secondly, the entire device boasts a higher degree of automation, is convenient and quick to operate, and improves the reliability and efficiency of testing.

[0008] As an optimization, the sealing component includes an expansion sleeve provided with a corresponding side cavity hole, and also includes sealing posts provided with corresponding upper mounting holes and vertical holes.

[0009] In this way, the structure of the sealing component is more rationally selected, and the use of an expansion sleeve for the side cavity hole can improve the sealing reliability.

[0010] As an optimization, a vertically downward pressure rod is also provided on the mounting plate. After the vertical movement control structure drives the mounting plate to move downward, the pressure rod can press against the valve body and apply a downward clamping force.

[0011] In this way, by setting a pressure rod, the valve body can be pressed more firmly, which can better prevent the valve body from shifting during the test and improve the reliability of the entire test process.

[0012] Furthermore, the compression members are arranged in pairs.

[0013] As an optimization, a support base plate is provided on the base plate, and a testing station is formed above the support base plate. The first sealing structure includes an installation groove with an annular structure design provided on the support base plate, and a sealing ring is provided in the installation groove.

[0014] In this way, by setting a supporting base plate, the entire layout becomes simpler and more reasonable, and the sealing structure design becomes simpler.

[0015] As an optimization, an inflation pipe connector is provided at the inner end of the inflation pipe and connected to an air supply pipe, which is used to connect to an air supply device.

[0016] This makes it easier to connect to external gas supply equipment.

[0017] As an optimization, a snap-fit ​​limiting block is installed and fixed on the support block, and a vertical snap-fit ​​groove is provided on the inner side of the snap-fit ​​limiting block, so that the connecting rib plate on the valve body can extend into and fit into the snap-fit ​​groove.

[0018] In this way, by setting a snap-fit ​​limit block, the valve body at the testing station can be better kept in a vertical position, which is more conducive to testing.

[0019] As an optimization, the vertical movement control structure includes a frame plate disposed above the mounting plate, with vertically downward guide columns connected to each of the four corners of the frame plate, and the lower ends of the guide columns connected to the four corners of the base plate; guide sleeves are disposed on the mounting plate and corresponding to the guide columns; a mounting frame is mounted above the mounting plate, and a vertically arranged first drive cylinder is disposed on the frame plate, with the lower end of the first drive cylinder passing downward through the frame plate and connected to the mounting frame; a vertically arranged second drive cylinder is disposed within the mounting frame, the piston rod end of the second drive cylinder passing through a clearance hole on the mounting plate, and a sealing member for being directly opposite the side cavity hole is disposed on the piston rod end of the second drive cylinder.

[0020] In this way, the vertical movement control structure design is simpler and more reasonable, and can better enable the sealing components to cooperate with the side cavity holes for sealing.

[0021] As an optimization, the longitudinal movement control structure includes a mounting bracket mounted on a base plate, a longitudinally arranged third drive cylinder mounted on the mounting bracket, and a first mounting block and a second mounting block respectively mounted on the piston rod end of the third drive cylinder, and a longitudinally arranged guide rod mounted on the first mounting block and the second mounting block respectively, and a bracket plate is provided at the front end of the mounting bracket, and a guide hole is provided on the bracket plate for the guide rod to extend into.

[0022] In this way, the longitudinal movement control structure design is simpler and more reasonable, making it possible to drive the first and second mounting blocks to move more smoothly.

[0023] As an optimization, the lateral movement control structure includes a support bracket mounted on the base plate, a fourth drive cylinder arranged laterally on the support bracket, a support block mounted on the piston rod end of the fourth drive cylinder, a guide rod arranged laterally on the support block, a support plate at the front end of the support bracket, and a guide hole provided on the support plate for the guide rod to extend into.

[0024] In this way, the design of the lateral movement control structure is simpler and more reasonable, and it is more stable when moving the support block.

[0025] In summary, the aforementioned valve body high-pressure airtightness micro-leakage testing equipment features a simpler and more reasonable structural design, better sealing and inflation of the valve body, and greater ease of operation and use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the valve body.

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure after rotation by one angle.

[0028] Figure 3 This is a schematic diagram of the valve body high-pressure airtightness micro-leakage testing device in a specific embodiment of this utility model.

[0029] Figure 4 yes Figure 3 A magnified view of position A in the diagram.

[0030] Figure 5 yes Figure 3 A schematic diagram of the structure after rotation by one angle.

[0031] Figure 6 yes Figure 5 A magnified view of position B in the diagram.

[0032] Figure 7 yes Figure 3 A schematic diagram of the structure after rotating it to another angle.

[0033] Figure 8 yes Figure 7 A magnified view of position C in the diagram.

[0034] Figure 9 yes Figure 8 A structural diagram omitting the valve body to be tested.

[0035] Figure 10 yes Figure 9 A magnified view of position D in the diagram.

[0036] Figure 11 yes Figure 3 Front view.

[0037] Figure 12 yes Figure 3 Rear view. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] like Figures 1 to 12 As shown, a valve body high-pressure airtightness micro-leakage testing device includes a frame, the frame including a base plate 20 at the lower end, the base plate having a testing station for placing the valve body 21 to be tested and arranging the valve body vertically, a first sealing structure between the lower end of the valve body and the testing station for sealing the lower mounting hole of the valve body; a vertical movement control structure is also provided on the frame, the vertical movement control structure including a mounting plate 22 horizontally located above the base plate, on the mounting plate having sealing components 23 respectively facing the side cavity hole, the upper mounting hole and the vertical hole, and each for sealing the side cavity hole, the upper mounting hole and the vertical hole; longitudinal movement control structures are provided at both ends of the base plate, the working ends of the longitudinal movement control structures each having a first mounting block 24 and a second mounting block 24 installed. Block 25 has horizontally arranged plug rods 26, air inlet pipes 27, and connecting sealing heads 28 on the first mounting block, corresponding to the upper docking hole, lower docking hole, and connecting hole on the valve body, respectively, so that the plug rods and connecting sealing heads can seal the upper docking hole and connecting hole respectively, and the air inlet pipe can communicate with the lower docking hole for air inflation and air tightness testing; on the second mounting block, sealing rods 29 are provided on the second mounting block, corresponding to the lower air outlet and upper air outlet respectively, and can seal the lower air outlet and upper air outlet respectively; a lateral movement control structure is provided on one side of the seat plate, and a support block 30 is installed on the working end of the lateral movement control structure. A plug connector 31 is provided on the support block, corresponding to the upper connecting hole and lower connecting hole respectively, and can seal the upper connecting hole and lower connecting hole respectively.

[0040] Thus, the aforementioned high-pressure airtightness micro-leakage testing equipment for valve bodies features seals for each of the valve body's lower mounting hole, side cavity hole, upper mounting hole, vertical hole, upper docking hole, connecting hole, lower vent hole, upper vent hole, upper connecting hole, and lower connecting hole, enabling better sealing of the entire valve body. Furthermore, the use of an inflation pipe connected to the lower docking hole for bottom-up inflation allows for more effective airtightness testing. Secondly, the entire device boasts a higher degree of automation, is convenient and quick to operate, and improves the reliability and efficiency of testing.

[0041] In this specific embodiment, the sealing component includes an expansion sleeve 32 provided with a corresponding side cavity hole, and a sealing post 33 provided with a corresponding mounting hole and a vertical hole.

[0042] In this way, the structure of the sealing component is more rationally selected, and the use of an expansion sleeve for the side cavity hole can improve the sealing reliability.

[0043] In this specific embodiment, a vertically downward pressure rod 34 is also provided on the mounting plate. After the vertical movement control structure drives the mounting plate to move downward, the pressure rod can press against the valve body and apply a downward clamping force.

[0044] In this way, by setting a pressure rod, the valve body can be pressed more firmly, which can better prevent the valve body from shifting during the test and improve the reliability of the entire test process.

[0045] Furthermore, the compression members are arranged in pairs.

[0046] In this specific embodiment, a support base plate 35 is provided on the base plate, and a testing station is formed above the support base plate. The first sealing structure includes an installation groove with an annular structure design provided on the support base plate, and a sealing ring is provided in the installation groove.

[0047] In this way, by setting a supporting base plate, the entire layout becomes simpler and more reasonable, and the sealing structure design becomes simpler.

[0048] In this specific embodiment, an inflation pipe connector is provided at the inner end of the inflation pipe and an air supply pipe 36 is connected thereto, and the air supply pipe is used to connect to the air supply equipment.

[0049] This makes it easier to connect to external gas supply equipment.

[0050] In this specific embodiment, a snap-fit ​​limiting block 37 is installed and fixed on the support block, and a vertical snap-fit ​​groove 38 is provided on the inner side of the snap-fit ​​limiting block, so that the connecting rib plate on the valve body can extend into and cooperate in the snap-fit ​​groove.

[0051] In this way, by setting a snap-fit ​​limit block, the valve body at the testing station can be better kept in a vertical position, which is more conducive to testing.

[0052] In this specific embodiment, the vertical movement control structure includes a frame plate 39 disposed above the mounting plate, with vertically downward-oriented guide columns 40 connected to each of the four corners of the frame plate, and the lower ends of the guide columns connected to the four corners of the base plate; guide sleeves 41 are disposed on the mounting plate and corresponding to the guide columns; a mounting frame 42 is mounted above the mounting plate, and a vertically arranged first drive cylinder 43 is disposed on the frame plate, with the lower end of the first drive cylinder passing downward through the frame plate and connected to the mounting frame; a vertically arranged second drive cylinder 44 is disposed inside the mounting frame, the piston rod end of the second drive cylinder passing through a clearance hole on the mounting plate, and a sealing member for being directly opposite the side cavity hole is disposed on the piston rod end of the second drive cylinder.

[0053] In this way, the vertical movement control structure design is simpler and more reasonable, and can better enable the sealing components to cooperate with the side cavity holes for sealing.

[0054] In this specific embodiment, the longitudinal movement control structure includes a mounting bracket 45 mounted on a base plate, a longitudinally arranged third drive cylinder 46 mounted on the mounting bracket, and a first mounting block and a second mounting block respectively mounted on the piston rod end of the third drive cylinder, and a longitudinally arranged guide rod 47 respectively mounted on the first mounting block and the second mounting block, and a bracket plate 48 is provided at the front end of the mounting bracket, and a guide hole is provided on the bracket plate for the guide rod to extend into.

[0055] In this way, the longitudinal movement control structure design is simpler and more reasonable, making it possible to drive the first and second mounting blocks to move more smoothly.

[0056] Furthermore, a marking head 49 is also installed on the second mounting block. This allows marking to be completed simultaneously with the inspection.

[0057] In this specific embodiment, the lateral movement control structure includes a support bracket 50 mounted on a base plate, a fourth drive cylinder 51 arranged laterally on the support bracket, a support block mounted on the piston rod end of the fourth drive cylinder, a guide rod 52 arranged laterally on the support block, a support plate at the front end of the support bracket, and a guide hole provided on the support plate for the guide rod to extend into.

[0058] In this way, the design of the lateral movement control structure is simpler and more reasonable, and it is more stable when moving the support block.

[0059] Furthermore, a vertically upward-arranged positioning head 53 is installed at the testing station, allowing the positioning head to extend into the valve cavity from the lower mounting hole. This improves positioning efficiency and facilitates testing operations.

[0060] In summary, the aforementioned valve body high-pressure airtightness micro-leakage testing equipment can simultaneously achieve dual-channel airtightness testing with the same set of equipment and tooling. One channel achieves 20 Bar high-pressure micro-leakage testing, and two channels achieve 10 Bar airtightness testing. Furthermore, it features a simpler and more reasonable structural design, better sealing and inflation of the valve body, and easier operation and use.

[0061] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A valve body high-pressure airtight micro-leakage testing device, comprising a frame body, the frame body comprising a seat plate at a lower end, the seat plate being provided with a detection station and used for placing a valve body to be detected and vertically arranging the valve body, a first sealing structure being arranged between the lower end of the valve body and the detection station and capable of sealing a lower mounting hole of the valve body; characterized in that; The vertical movement control structure further comprises a mounting plate horizontally arranged above the seat plate, sealing members arranged on the mounting plate and respectively corresponding to the side cavity hole, the upper mounting hole and the vertical hole and capable of respectively sealing the side cavity hole, the upper mounting hole and the vertical hole; the longitudinal movement control structure is arranged at two ends of the seat plate, and a first mounting block and a second mounting block are arranged at working ends of the longitudinal movement control structure; a plug rod, an inflation pipe and a connection sealing head are arranged on the first mounting block and respectively corresponding to the upper butt joint hole, the lower butt joint hole and the connection hole of the valve body, so that the plug rod and the connection sealing head can respectively seal the upper butt joint hole and the connection hole, and the inflation pipe can be in communication with the lower butt joint hole for inflation and air tightness detection; a sealing rod is arranged on the second mounting block and respectively corresponding to the lower air outlet hole and the upper air outlet hole and capable of respectively sealing the lower air outlet hole and the upper air outlet hole; the lateral movement control structure is arranged at one side of the seat plate, and a support block is arranged at a working end of the lateral movement control structure; a plug is arranged on the support block and respectively corresponding to the upper connecting hole and the lower connecting hole and capable of respectively sealing the upper connecting hole and the lower connecting hole.

2. A valve body high pressure air tight micro-leak test apparatus as claimed in claim 1, wherein; The sealing member comprises a sleeve corresponding to the side cavity hole, and further comprises a sealing column corresponding to the upper mounting hole and the vertical hole.

3. The valve body high pressure air tight micro-leak test apparatus as claimed in claim 1, wherein; The mounting plate is further provided with a vertical downward pressing rod, and after the mounting plate is driven downward by the vertical movement control structure, the pressing rod can be pressed against the valve body and exert a downward pressing force.

4. The valve body high pressure air tight micro-leak test apparatus of claim 1, wherein; The seat plate is provided with a support bottom plate, and a detection station is formed above the support bottom plate; the first sealing structure comprises an installation groove arranged on the support bottom plate and designed in a ring structure, and a sealing ring is arranged in the installation groove.

5. The valve body high pressure air tight micro-leak test apparatus as claimed in claim 1, wherein; An inflation pipe joint is arranged at an inner end of the inflation pipe and connected with a gas supply pipe, and the gas supply pipe is used to be connected with a gas supply device.

6. A valve body high pressure air tight micro-leak test apparatus as claimed in claim 1, wherein; A clamping limiting block is fixedly arranged on the support block, a vertical clamping groove is arranged on an inner side of the clamping limiting block, and a connection rib plate on the valve body can be inserted into the clamping groove.

7. A valve high pressure gas tight micro-leakage testing apparatus as claimed in claim 1, wherein; The vertical movement control structure comprises a frame plate arranged above the mounting plate, a vertical downward guide column is arranged at each of four corner positions of the frame plate, and the lower end of the guide column is connected to the seat plate at the four corner positions; a guide sleeve is arranged on the mounting plate and respectively corresponding to the guide column; a mounting frame is arranged above the mounting plate, a first driving air cylinder is arranged vertically on the frame plate, and the lower end of the first driving air cylinder passes through the frame plate and is connected to the mounting frame; a second driving air cylinder is arranged vertically in the mounting frame, the piston rod end of the second driving air cylinder passes through a gap on the mounting plate, and one of the sealing members arranged corresponding to the side cavity hole is arranged on the piston rod end of the second driving air cylinder.

8. A valve body high pressure air tight micro-leak test apparatus as claimed in claim 1, wherein; The longitudinal movement control structure comprises a mounting bracket arranged on the base plate, a third driving cylinder arranged longitudinally on the mounting bracket, first and second mounting blocks arranged on the piston rod end of the third driving cylinder respectively, and a guide rod arranged longitudinally on each of the first and second mounting blocks.

9. The valve high pressure gas tight micro-leakage testing apparatus as claimed in claim 1, wherein; The transverse movement control structure comprises a support bracket arranged on the base plate, a fourth driving cylinder arranged transversely on the support bracket, a support block arranged on the piston rod end of the fourth driving cylinder, and a guide rod arranged transversely on the support block. The transverse movement control structure comprises a support bracket arranged on the base plate, a fourth driving cylinder arranged transversely on the support bracket, a support block arranged on the piston rod end of the fourth driving cylinder, and a guide rod arranged transversely on the support block.

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