Plastic valve core air tightness detection equipment

Abstract

The utility model provides a plastic valve core air tightness detection equipment relates to plastic valve core production technical field, solves the plastic valve core air tightness detection of existing, the operation is complex, the efficiency is low, influences the effect problem of detection. The utility model discloses a plurality of for placing the valve core of detection and the ventilation of detection time ventilation support subassembly of being arranged on the upper surface of base, the lift support plate of liftable setting on two uprights, a plurality of corresponding ventilation support subassembly for the compact sealing subassembly of valve core of being arranged under the lift support plate are used for driving the compact sealing subassembly to press down the compact cylinder of being installed in the lift support plate, ventilation support subassembly lower end is provided with air pressure detection subassembly. The utility model has the advantages of: convenient operation, high detection efficiency, can guarantee the sealing property when detecting, guarantee the effect of detection.

Description

Technical Field

[0001] This utility model relates to the field of plastic valve core production technology, and specifically to a plastic valve core airtightness testing device. Background Technology

[0002] If the valve core is not airtight, it will directly affect the valve's performance and may even cause safety accidents. Therefore, plastic valve cores usually need to be tested for airtightness after production.

[0003] Existing methods for testing the airtightness of plastic valve cores involve manual compression testing, which is complex, inefficient, and results in poor sealing during the testing process, easily affecting the test results. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing method of testing the airtightness of plastic valve cores involves manual compression, which is complicated, inefficient, and results in poor sealing during the test, thus affecting the test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plastic valve core air tightness testing device includes a base, a set of columns fixedly connected to both sides of the upper end of the base, a crossbeam fixedly connected to the upper end of the columns, and a control host set on the crossbeam. The device is characterized by further including: several ventilation support components set on the upper surface of the base for placing the valve core to be tested and ventilating during testing; a lifting support plate that can be raised and lowered on the two columns; several pressing and sealing components corresponding to the ventilation support components set below the lifting support plate for pressing the valve core; and a pressing cylinder installed on the lifting support plate for driving the pressing and sealing components downwards. A pressure detection component is provided at the lower end of each ventilation support component.

[0007] The compression sealing assembly includes a compression block. The bottom surface of the compression block has a third upper valve core groove, a second upper valve core groove, and a first upper valve core groove sequentially opened from bottom to top. A compression spring is fixedly connected to the top of the first upper valve core groove. The lower end of the compression spring is fixedly connected to a sealing ball for sealing the upper port of the valve core when compression is performed through a connecting plate.

[0008] The ventilation support assembly includes a support block. The upper surface of the support block is recessed and has a lower valve core groove. A vent pipe for inserting into the lower port of the valve core for ventilation is provided in the middle of the lower valve core groove. The upper end of the vent pipe is connected to a spherical air outlet. The other end of the vent pipe extends out of the support block and is connected to an external air supply device. A check valve is provided on the part of the vent pipe located outside the support block.

[0009] A further improvement is made to the following: an electric push rod is installed at the upper end of the crossbeam, and the output end of the electric push rod passes downward through the crossbeam and is fixedly connected to the upper surface of the lifting support plate. Linear bearings are fixedly connected to both ends of the lifting support plate, and the linear bearings are slidably sleeved on the column.

[0010] A further improvement is that the output end of the clamping cylinder passes downward through the lifting support plate and is fixedly connected to the upper end of the clamping block.

[0011] A further improvement is that a first sealing ring is provided on the top surface of the second upper valve core groove.

[0012] A further improvement is that a fourth sealing ring is provided on the top surface of the third upper valve core groove.

[0013] A further improvement is that a second sealing ring is provided on the bottom surface of the lower valve core groove.

[0014] A further improvement is that a sealing ring is provided extending downward from the outer edge of the bottom surface of the clamping block.

[0015] A further improvement is that an annular sealing groove that mates with the sealing ring is provided on the upper surface of the support block surrounding the lower valve core groove.

[0016] A further improvement is that a third sealing ring is provided on the bottom surface of the annular sealing groove.

[0017] A further improvement is that the air pressure detection component is an air pressure sensor, and the detection head of the air pressure sensor is connected to the vent pipe between the spherical air outlet and the check valve.

[0018] A further improvement is that the control host is electrically connected to the pressure sensor, electric push rod, clamping cylinder, and air supply equipment.

[0019] Compared with existing technologies, the above technical solution has the following advantages:

[0020] The valve core is pressed and sealed by the compression sealing assembly and the vent support assembly during testing. Then, air is supplied. The air pressure detection assembly detects the air pressure difference before and after the air supply. The air tightness of the valve core is judged by the pressure difference. It is easy to operate, has a simple structure, and has high testing efficiency, reducing the intensity of manual operation.

[0021] The annular sealing groove and the third sealing ring, which work together with the sealing ring, can provide external sealing and improve the sealing performance during testing. The sealing performance can be further improved by setting multiple sealing rings. The spherical air outlet and the sealing ball can further ensure the sealing performance during testing and ensure the effectiveness of the test. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the connection structure of the valve core, the compression sealing assembly, and the ventilation support assembly during the testing of this utility model;

[0025] Figure 3 This is a schematic diagram of the compression sealing assembly in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the ventilation support assembly and the air pressure detection assembly of this utility model;

[0027] Figure 5 This is a schematic diagram of the valve core.

[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. Lifting support plate; 21. Linear bearing; 3. Electric push rod; 4. Valve core; 5. Pressing and sealing assembly; 51. Pressing block; 52. First upper valve core groove; 53. Second upper valve core groove; 54. Pressing spring; 55. Connecting plate; 56. Sealing ball; 57. First sealing ring; 58. Sealing ring; 59. Third upper valve core groove; 510. Fourth sealing ring; 6. Vent support assembly; 61. Support block; 62. Lower valve core groove; 63. Second sealing ring; 64. Vent pipe; 65. Spherical air outlet; 66. Check valve; 67. Annular sealing groove; 68. Third sealing ring; 7. Air pressure detection assembly; 8. Pressing cylinder; 9. Control host; 10. Crossbeam; 11. Column. Detailed Implementation

[0029] See Figures 1-5 As shown, the technical solution adopted in this specific embodiment is: a plastic valve core airtightness testing device, including a base 1, a set of columns 11 fixedly connected to both sides of the upper end of the base 1, a crossbeam 10 fixedly connected to the upper end of the columns 11, and a control host 9 set on the crossbeam 10. The device is characterized by: it also includes a plurality of ventilation support components 6 set on the upper surface of the base 1 for placing the valve core 4 to be tested and for venting during testing, a lifting support plate 2 that can be lifted and lowered on the two columns 11, a plurality of pressing and sealing components 5 corresponding to the ventilation support components 6 set below the lifting support plate 2 for pressing the valve core 4, and a pressing cylinder installed on the lifting support plate 2 for driving the pressing and sealing components 5 to press down. The lower end of the ventilation support component 6 is provided with a pressure detection component 7.

[0030] The compression sealing assembly 5 includes a compression block 51. The bottom surface of the compression block 51 is provided with a third upper valve core groove 59, a second upper valve core groove 53, and a first upper valve core groove 52 from bottom to top. A compression spring 54 is fixedly connected to the top of the first upper valve core groove 52. The lower end of the compression spring 54 is fixedly connected to a sealing ball 56 for sealing the upper port of the valve core 4 when compression is performed through a connecting plate 55.

[0031] The ventilation support assembly 6 includes a support block 61. The upper surface of the support block 61 is recessed and has a lower valve core groove 62. The lower valve core groove 62 is provided with a vent pipe 64 for inserting into the lower port of the valve core 4 for ventilation. The upper end of the vent pipe 64 is connected to a spherical air outlet 65. The other end of the vent pipe 64 extends out of the support block 61 and is connected to an external air supply device. A check valve 66 is provided on the outer part of the vent pipe 64 located on the support block 61.

[0032] The upper end of the crossbeam 10 is equipped with an electric push rod 3. The output end of the electric push rod 3 passes downward through the crossbeam 10 and is fixedly connected to the upper surface of the lifting support plate 2. The two ends of the lifting support plate 2 are fixedly connected with linear bearings 21, which are slidably sleeved on the column 11.

[0033] The output end of the pressing cylinder 8 passes downward through the lifting support plate 2 and is fixedly connected to the upper end of the pressing block 51.

[0034] The second upper valve core groove 53 has a first sealing ring 57 on its inner top surface.

[0035] The third upper valve core groove 59 is provided with a fourth sealing ring 510 on its inner top surface.

[0036] The lower valve core groove 62 is provided with a second sealing ring 63 on its inner bottom surface.

[0037] A sealing ring 58 is provided extending downward from the outer edge of the bottom surface of the clamping block 51.

[0038] The upper surface of the support block 61 is provided with an annular sealing groove 67 that cooperates with the sealing ring 58.

[0039] A third sealing ring 68 is provided on the bottom surface of the annular sealing groove 67.

[0040] The air pressure detection component 7 is an air pressure sensor, and the detection head of the air pressure sensor is connected to the air pipe 64 between the spherical air outlet 65 and the check valve 66.

[0041] The control host 9 is electrically connected to the air pressure sensor, electric push rod 3, pressing cylinder 8 and air supply equipment.

[0042] The working principle of this utility model is as follows: In use, the lower end of the valve core is placed in the lower valve core groove of the support block, and the vent pipe is inserted into the lower port of the valve core. The spherical air outlet abuts against the lower port of the valve core. Then, the electric push rod drives the lifting support plate to move down a certain distance. After that, the cylinder drives the pressing and sealing assembly to move down. The three upper valve core grooves of the pressing block press against the upper end of the valve core. Through the cooperation of the pressing spring at the top and the sealing ball, the sealing ball abuts against the upper port of the valve core, pressing and sealing the upper end. After pressing, the air... A pressure sensor detects the air pressure, and then air is supplied to the vent pipe through the air supply equipment. Nitrogen is injected into the valve core, and the air pressure sensor detects the air pressure after venting. By comparing the air pressure before and after venting, the pressure difference is obtained, and the air tightness of the valve core is judged by the pressure difference. The annular sealing groove and the third sealing ring can seal externally through the sealing ring, improving the sealing performance during testing. The sealing performance can be further improved by setting multiple sealing rings. The spherical air outlet and sealing ball can further ensure the sealing performance during testing.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A plastic valve core airtightness testing device, comprising a base, a set of columns fixedly connected to both sides of the upper end of the base, a crossbeam fixedly connected to the upper end of the columns, and a control host mounted on the crossbeam, characterized in that: It also includes several ventilation support components set on the upper surface of the base for placing the valve core to be tested and ventilating during testing, a lifting support plate that can be lifted and lowered on two columns, several pressing and sealing components corresponding to the ventilation support components set below the lifting support plate for pressing the valve core, and a pressing cylinder installed on the lifting support plate for driving the pressing and sealing components to press down. The lower end of the ventilation support component is provided with a pressure detection component. The compression sealing assembly includes a compression block. The bottom surface of the compression block has a third upper valve core groove, a second upper valve core groove, and a first upper valve core groove sequentially opened from bottom to top. A compression spring is fixedly connected to the top of the first upper valve core groove. The lower end of the compression spring is fixedly connected to a sealing ball for sealing the upper port of the valve core when compression is performed through a connecting plate. The ventilation support assembly includes a support block. The upper surface of the support block is recessed and has a lower valve core groove. A vent pipe for inserting into the lower port of the valve core for ventilation is provided in the middle of the lower valve core groove. The upper end of the vent pipe is connected to a spherical air outlet. The other end of the vent pipe extends out of the support block and is connected to an external air supply device. A check valve is provided on the part of the vent pipe located outside the support block.

2. The plastic valve core airtightness testing device according to claim 1, characterized in that: An electric push rod is installed at the upper end of the crossbeam. The output end of the electric push rod passes downward through the crossbeam and is fixedly connected to the upper surface of the lifting support plate. Linear bearings are fixedly connected to both ends of the lifting support plate, and the linear bearings are slidably sleeved on the column.

3. The plastic valve core airtightness testing device according to claim 1, characterized in that: The output end of the clamping cylinder passes downward through the lifting support plate and is fixedly connected to the upper end of the clamping block.

4. The plastic valve core airtightness testing device according to claim 1, characterized in that: A first sealing ring is provided on the top surface of the second upper valve core groove.

5. The plastic valve core airtightness testing device according to claim 1, characterized in that: A fourth sealing ring is provided on the top surface of the third upper valve core groove.

6. The plastic valve core airtightness testing device according to claim 1, characterized in that: A second sealing ring is provided on the bottom surface of the lower valve core groove.

7. The plastic valve core airtightness testing device according to claim 1, characterized in that: A sealing ring is provided extending downward from the outer edge of the bottom surface of the clamping block.

8. The plastic valve core airtightness testing device according to claim 7, characterized in that: The upper surface of the support block is provided with an annular sealing groove that mates with the sealing ring around the lower valve core groove.

9. The plastic valve core airtightness testing device according to claim 8, characterized in that: A third sealing ring is provided on the bottom surface of the annular sealing groove.

10. The plastic valve core airtightness testing device according to claim 1, characterized in that: The air pressure detection component is an air pressure sensor, and the detection head of the air pressure sensor is connected to the air pipe between the spherical air outlet and the check valve.

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