One-way valve test equipment

Abstract

The utility model belongs to the technical field of valve detection, and relates to one-way valve testing equipment, which comprises a machine table, a jig is arranged on the machine table, the jig comprises a mounting block and a flip cover pressing plate matched with the mounting block, the flip cover pressing plate is connected with a pressing mechanism, the upper end face of the mounting block is provided with a mounting groove used for mounting a one-way valve, and the upper end face of the mounting block is provided with a clamping groove used for clamping the one-way valve. An air hole is formed in the bottom in the mounting groove and connected with one end of a flow meter through a pipeline, the other end of the flow meter is connected with a proportional valve through a pipeline, a laser coding machine is arranged above the jig, quantitative gas is input into the input end of the one-way valve through the proportional valve, and the flow meter is used for monitoring the gas flow of the input end. When the gas flow exceeds a critical value, but the reading of the flow meter is still unchanged, the one-way valve can be judged to be damaged, the valve core is blocked, and the false detection phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, in particular to a one-way valve testing device. Background Art

[0002] Before using a one-way valve, in order to ensure its quality, it needs to be tested for air tightness. Existing one-way valves are usually tested manually. Workers need to use an inflation device to inflate air into the valve body from the air inlet. The gas pushes the valve core away from the air inlet until the valve core moves to the contraction position, and the one-way valve closes. At this time, the worker inserts the measuring port on the pressure gauge through the test port into the valve body to test the air tightness of the one-way valve. The manual inspection method for testing the air conditioning one-way valve is slow in detection efficiency and poor in practicality.

[0003] Patent No. CN202020355696.0 records a one-way valve air tightness detection device, which facilitates employees to detect the air tightness of the one-way valve, improves detection efficiency, and improves practicality; it includes a base plate, four sets of stabilizing devices, a support column, a cylinder, a lifting plate, a first connecting device, an inflation head, a connecting air pipe, a base, a pressure gauge and a second connecting device. The four sets of stabilizing devices are installed at the bottom end of the base plate, the bottom end of the support column is provided with a base, the base is fixedly installed at the top end of the base plate, the top of the support column is provided with a top plate, the cylinder is installed on the top plate, and the bottom end of the cylinder is provided with a telescopic rod, the telescopic rod passes through the top plate and extends to the bottom of the top plate, the lifting plate is fixedly connected to the bottom end of the telescopic rod through the first connecting device, the inflation head is fixedly installed on the lifting plate, the input end of the connecting air pipe is connected to the output end of the external air pump, the output end of the connecting air pipe is connected to the input end of the inflation head, and the bottom end of the base is provided with a connecting seat. Connect the connecting air pipe 11 with the external air pump, so that the external gas is injected into the one-way valve through the connecting air pipe 11 and the inflation head 10 under the pressure of the external air pump. The gas pushes the valve core to move away from the air inlet until the valve core moves to the contraction position, and the one-way valve is closed. Then continue to inflate the one-way valve and observe whether the pressure on the pressure gauge 14 increases. If the pressure does not change, it means that the air tightness of this one-way valve is good. If the pressure increases, it means that the air tightness of this one-way valve is poor. The air tightness test of the one-way valve can be completed. In this process, if the one-way valve is damaged and the valve core is stuck, continue to inflate the one-way valve and the pressure on the pressure gauge will not change. Therefore, the utility model proposes a one-way valve testing device. Utility Model Content

[0004] The main purpose of the utility model is to provide a one-way valve testing device, which inputs a fixed amount of gas into the input end of the one-way valve through a proportional valve, and uses a flow meter to monitor the gas flow at the input end. When the gas volume exceeds a critical value but the flow meter reading remains unchanged, it can be determined that the one-way valve is damaged and the valve core is blocked, thereby avoiding false detection.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a one-way valve testing device, including a machine platform, a jig is provided on the machine platform, the jig includes a mounting block and a flip-up pressure plate matching the mounting block, the flip-up pressure plate is connected to a clamping mechanism, the upper end surface of the mounting block is provided with a mounting groove for installing the one-way valve, the bottom of the mounting groove is provided with an air hole, the air hole is connected to one end of a flow meter through a pipeline, the other end of the flow meter is connected to a proportional valve through a pipeline, and a laser coding machine is provided above the jig.

[0006] Preferably, a vertical plate is provided on one side of the mounting block, the top end of the vertical plate is connected to the vertical part of the T-shaped plate through a hinge, the flip cover pressure plate is connected to the lower end surface of one end of the horizontal part of the T-shaped plate, the left side of the vertical plate is rotatably connected to the cylinder body of the cylinder through a hinge, and the top rod of the cylinder is rotatably connected to the other end of the horizontal part of the T-shaped plate through a pin shaft.

[0007] Preferably, a bracket is vertically provided on the machine platform, a mounting plate is slidably connected to the bracket via a vertical slide rail, the laser coding machine is connected to the mounting plate, a screw rod is provided on the bracket, the mounting plate is connected to the screw rod via a screw rod nut, and a hand wheel is connected to the top of the screw rod.

[0008] Preferably, a control panel is connected to the front of the machine, and the flow meter and the proportional valve are both connected to the control panel.

[0009] The beneficial effects of the technical solution of the present utility model are as follows: the present utility model introduces a fixed amount of gas into the input end of the one-way valve through the proportional valve, and judges the sealing performance of the one-way valve by the vertical change of the flow meter; when the input gas volume is less than the critical value and the reading of the flow meter remains unchanged, the current one-way valve has good air tightness, and the laser coding machine is used to mark the code after the test is completed; when the input gas volume is less than the critical value and the reading of the flow meter changes, the valve leaks; when the input gas volume exceeds the critical value and the reading of the flow meter remains unchanged, the one-way valve is damaged and the valve core is stuck, thereby avoiding the situation in the prior art where a damaged valve is detected as poor air tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a layout diagram of the one-way valve testing equipment in the embodiment when it is working.

[0011] Figure 2 It is a schematic diagram of the structure of the clamping mechanism.

[0012] Figure 3 It is a schematic diagram of the installation block structure.

[0013] The numbers in the figure represent:

[0014] 1. Machine platform; 2. Mounting block; 3. Flip cover pressure plate; 4. Mounting slot; 5. Air hole; 6. Flow meter; 7. Proportional valve; 8. Laser coder; 9. Vertical plate; 10. T-plate; 11. Cylinder; 12. Bracket; 13. Mounting plate; 14. Handwheel; 15. Control panel. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to specific embodiments.

[0016] Example:

[0017] like Figures 1 to 3 As shown, a one-way valve testing device of the present invention includes a machine platform 1, on which a jig is provided, the jig including a mounting block 2 and a flip-up pressure plate 3 matching the mounting block 2, the flip-up pressure plate 3 being connected to a clamping mechanism, the upper end surface of the mounting block 2 being provided with a mounting groove 4 for mounting a one-way valve, an air hole 5 being provided at the bottom inner of the mounting groove 4, the air hole 5 being connected to one end of a flow meter 6 through a pipeline, the other end of the flow meter 6 being connected to a proportional valve 7 through a pipeline, and a laser coding machine 8 being provided above the jig.

[0018] A vertical plate 9 is provided on one side of the mounting block 2, and the top end of the vertical plate 9 is connected to the vertical part of the T-shaped plate 10 through a hinge. The flip cover pressure plate 3 is connected to the lower end surface of one end of the horizontal part of the T-shaped plate 10. The left side of the vertical plate 9 is rotatably connected to the cylinder body of the cylinder 11 through a hinge, and the top rod of the cylinder 11 is rotatably connected to the other end of the horizontal part of the T-shaped plate 10 through a pin shaft.

[0019] A bracket 12 is vertically provided on the machine 1, and a mounting plate 13 is slidably connected to the bracket 12 through a vertical slide rail. The laser coding machine 8 is connected to the mounting plate 13. A screw is provided on the bracket 12, and the mounting plate 13 is connected to the screw through a screw nut. A handwheel 14 is connected to the top of the screw.

[0020] A control panel 15 is connected to the front of the machine 1 , and the flow meter 6 and the proportional valve 7 are both connected to the control panel 15 .

[0021] The working process of the present utility model is as follows: the one-way valve input end is placed downward into the mounting groove 4, the cylinder 11 drives the T-plate 10 to rotate clockwise so that the flip cover pressure plate 3 is pressed against the mounting block 2, and the control panel 15 controls the proportional valve 7 to introduce a fixed amount of gas into the mounting groove 4 according to the current critical value of the one-way valve. When the input gas volume is less than the critical value and the reading of the flow meter 6 remains unchanged, the current one-way valve is airtight. After the test is completed, the laser coding machine 8 is used for coding; when the input gas volume is less than the critical value and the reading of the flow meter 6 changes, the valve leaks; when the cylinder 11 introduced exceeds the critical value and the reading of the flow meter 6 remains unchanged, the one-way valve is damaged and the valve core is stuck.

[0022] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A one-way valve testing device, characterized by: It includes a machine platform, on which a jig is provided, the jig including a mounting block and a flip-cover pressure plate matching the mounting block, the flip-cover pressure plate being connected to a clamping mechanism, the upper end surface of the mounting block being provided with a mounting groove for installing a one-way valve, an air hole being provided at the bottom of the mounting groove, the air hole being connected to one end of a flow meter through a pipeline, the other end of the flow meter being connected to a proportional valve through a pipeline, the proportional valve being externally connected to a source, and a laser coding machine being provided above the jig.

2. A one-way valve testing device according to claim 1, characterized in that: A vertical plate is provided on one side of the mounting block, the top end of the vertical plate is connected to the vertical part of the T-shaped plate by a hinge, the flip cover pressure plate is connected to the lower end surface of one end of the horizontal part of the T-shaped plate, the left side of the vertical plate is rotatably connected to the cylinder body of the cylinder by a hinge, and the top rod of the cylinder is rotatably connected to the other end of the horizontal part of the T-shaped plate by a pin shaft.

3. The one-way valve testing device according to claim 1, characterized in that: A bracket is vertically provided on the machine platform, and a mounting plate is slidably connected to the bracket via a vertical slide rail. The laser coding machine is connected to the mounting plate. A screw rod is provided on the bracket, and the mounting plate is connected to the screw rod via a screw rod nut. The top of the screw rod is connected to a hand wheel.

4. A one-way valve testing device according to claim 1, characterized in that: The front of the machine is connected with a control panel, and the flow meter and the proportional valve are both connected to the control panel.

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