Torque and air tightness testing equipment for three-way valve

Abstract

The utility model belongs to the technical field of valve detection, and relates to a three-way valve torque and air tightness testing device which comprises a machine table, a base is arranged on the machine table, a jig is arranged on the base, an installation groove is formed in the jig, plugs are arranged on the two sides of the jig and are driven by clamping air cylinders, a pressing plate is arranged above the jig, and the pressing plate is arranged on the machine table. The pressing plate is driven by a downward pressing air cylinder, air holes are formed in the faces, right facing the jig, of the plug and the pressing plate, the air holes are connected with an air source through pipelines, a discharging mechanism is arranged on one side of the base, a through hole is formed in the bottom in the mounting groove, a rotating shaft is arranged in the through hole, and a knob clamping groove is formed in the upper end face of the rotating shaft. The bottom end of the rotating shaft is connected with a torque testing mechanism. The air tightness detection and the torque detection of the three-way valve are carried out in the same jig of the same machine table, so that a product is prevented from being carried among different stations, and the working efficiency is improved.

Description

Technical Field

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

[0002] Nowadays, valves are widely used in various fields, and their air tightness requirements are extremely high. Therefore, they need to be tested for air tightness before leaving the factory to ensure that the air tightness of the product is qualified. Patent No. CN202323217947.1 discloses an air tightness detection device for a three-way high-pressure valve, including an air tightness meter and a detection table, as well as a tightening frame mounted on the detection table, a tightening cylinder installed on the top of the tightening frame, and two tightening plugs suspended on the cylinder head of the tightening cylinder. A three-way valve fixture is provided on the detection table, which is directly opposite to the tightening plug. The bottom of the three-way valve fixture is provided with an air vent I and the side is provided with an air vent II, wherein the air vent I is directly opposite to the detection port and is sealed and docked. The three-way high-pressure valve is embedded in the three-way valve fixture, and the pressure relief port of the three-way high-pressure valve is directly opposite to the air vent II. During operation, place the three-way high-pressure valve 7 in the three-way valve fixture 6. Press the cylinder 4 downward, tightening the valve downward until the port with the single-connector is against the vent port I. The sealing ring seals this port, and the plug presses against the two upper ports, while the side plug presses against the pressure relief port. The upper and lower connectors of the three-way high-pressure valve are now sealed. The airtightness tester 1's inflating nozzle 12 inflates the valve. This inflated state remains in place for several seconds, and the pressure change on the airtightness tester 1 is observed over time. If the product is completely airtight, the pressure should remain constant; if there is a leak, the pressure will drop. This pressure change can be used to determine the sealing quality of the adapter and ensure product compliance. This device can only test when the valve is connected or disconnected. Switching the valve state requires manual rotation of the valve knob, which is inefficient. Therefore, the present invention provides a three-way valve torque and airtightness tester. Utility Model Content

[0003] The main purpose of the utility model is to provide a three-way valve torque and air tightness testing device. The air tightness test and torque test of the three-way valve are carried out in the same fixture of the same machine, avoiding the transportation of products between different workstations and improving work efficiency.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a three-way valve torque and air tightness testing equipment, including a machine platform, a base is provided on the machine platform, a jig is provided on the base, a mounting groove is provided on the jig, plugs are provided on both sides of the jig, the plugs are driven by a clamping cylinder, a pressure plate is provided above the jig, the pressure plate is driven by a downward pressure cylinder, air holes are provided on the surface of the plug and the pressure plate facing the jig, the air holes are connected to an air source through a pipeline, a feeding mechanism is provided on one side of the base, a through hole is provided at the bottom of the mounting groove, a rotating shaft is provided in the through hole, a knob slot is provided on the upper end face of the rotating shaft, and a torque testing mechanism is connected to the bottom end of the rotating shaft.

[0005] Preferably, the torque testing mechanism includes a servo motor disposed in the machine, an output end of the servo motor is connected to one end of a reducer, and the other end of the reducer is connected to the bottom end of the rotating shaft through a torque sensor.

[0006] Preferably, the unloading mechanism includes a longitudinally arranged unloading conveyor belt, one side of the unloading conveyor belt is slidably connected to a first slide via a slide rail parallel to the unloading conveyor belt, the first slide is driven by a rodless cylinder, a vertical plate is provided on the first slide, the front of the vertical plate is vertically provided with a lifting cylinder with an output end facing upward, the top rod of the lifting cylinder is connected to a mounting plate, the upper end face of the mounting plate is connected to a motor with an output end facing downward, the output end of the motor is connected to one end of a connecting plate, the lower end face of the other end of the connecting plate is connected to a clamping claw, the rear of the base is slidably connected to a second slide via a transverse slide rail, the second slide is driven by a rodless cylinder, a bracket is provided on the second slide, and the downward pressure cylinder is provided with the top of the bracket.

[0007] The beneficial effects of the technical solution of this utility model are:

[0008] The utility model performs air tightness testing by blocking the three ports of the three-way valve and introducing compressed gas into the interior to observe the air pressure changes. A rotating shaft connected to the three-way valve knob is provided at the bottom of the fixture, and a torque testing mechanism connected to the rotating shaft is used to perform torque testing on the three-way valve. At the same time, the on-off state of the three-way valve can also be controlled, thereby meeting the detection requirements of multiple parameters and multiple states.

[0009] The air tightness test and torque test of the three-way valve are carried out in the same fixture of the same machine, avoiding the transportation of products between different stations and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a layout diagram of the three-way valve torque and air tightness testing equipment in operation.

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

[0012] The numbers in the figure represent:

[0013] 1. Machine; 2. Base; 3. Fixture; 4. Mounting slot; 5. Plug; 6. Air hole; 7. Clamping cylinder; 8. Pressing plate; 9. Pressing cylinder; 10. Servo motor; 11. Reducer; 12. Torque sensor; 13. Rotating shaft; 14. Unloading conveyor belt; 15. First slide; 16. Vertical plate; 17. Lifting cylinder; 18. Motor; 19. Connecting plate; 20. Gripper; 21. Second slide; 22. Bracket; 23. Knob slot. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to specific embodiments.

[0015] Example:

[0016] like Figure 1 and Figure 2 As shown, a three-way valve torque and air tightness testing device of the present invention includes a machine 1, the machine 1 is provided with a base 2, the base 2 is provided with a jig 3, the jig 3 is provided with a mounting slot 4, plugs 5 are provided on both sides of the jig 3, the plugs 5 are driven by a clamping cylinder 7, a pressure plate 8 is provided above the jig 3, the pressure plate 8 is driven by a downward pressure cylinder 9, the plug 5 and the pressure plate 8 are provided with air holes 6 on the side facing the jig 3, an air pressure sensor is provided in the air hole 6, the air hole 6 is connected to an air source through a pipeline, a feeding mechanism is provided on one side of the base 2, a through hole is provided at the bottom of the mounting slot 4, a rotating shaft 13 is provided in the through hole, the upper end surface of the rotating shaft 13 is provided with a knob slot 23, and the bottom end of the rotating shaft 13 is connected to a torque testing mechanism.

[0017] The torque testing mechanism includes a servo motor 10 disposed in the machine 1 . The output end of the servo motor 10 is connected to one end of a reducer 11 . The other end of the reducer 11 is connected to the bottom end of the rotating shaft 13 via a torque sensor 12 .

[0018] The unloading mechanism includes a longitudinally arranged unloading conveyor belt 14, and one side of the unloading conveyor belt 14 is slidably connected to a first slide 15 through a slide rail parallel to the unloading conveyor belt 14, and the first slide 15 is driven by a rodless cylinder. A vertical plate 16 is provided on the first slide 15, and a lifting cylinder 17 with an output end facing upward is vertically provided on the front of the vertical plate 16. The top rod of the lifting cylinder 17 is connected to a mounting plate, and the upper end surface of the mounting plate is connected to a motor 18 with an output end facing downward, and the output end of the motor 18 is connected to one end of a connecting plate 19, and the lower end surface of the other end of the connecting plate 19 is connected to a clamping claw 20. The rear of the base 2 is slidably connected to a second slide 21 through a transverse slide rail, and the second slide 21 is driven by a rodless cylinder. A bracket 22 is provided on the second slide 21, and the downward pressure cylinder 9 is provided with the top of the bracket 22.

[0019] The working process of the utility model is as follows: the three-way valve to be tested is placed in the fixture 3, the knob of the three-way valve is inserted into the knob slot, the two clamping cylinders 7 drive the plug 5 to block the two ends of the three-way valve, the pressing cylinder 9 drives the pressure plate 8 downward to block the top of the three-way valve, and a certain amount of gas is introduced into the three-way valve through the air hole 6, and the air pressure change is observed to perform air tightness detection, the servo motor 10 drives the rotating shaft 13 to rotate, and then controls the rotation of the knob of the three-way valve, thereby controlling the on and off of the three-way valve, and the torque sensor 12 records the torque. After the detection is completed, the clamping cylinder 7 and the pressing cylinder 9 are driven respectively. The plug 5 and the pressure plate 8 are reset, and the pressing cylinder 9 and the pressure plate 8 slide to the left under the drive of the rodless cylinder. The motor 18 drives the connecting plate 19 to rotate so that the clamping claw 20 turns to the top of the fixture 3. The lifting cylinder 17 drives the connecting plate 19 downward, and the three-way valve that has been clamped and tested is clamped. The motor 18 continues to drive the connecting plate 19 to rotate clockwise to the horizontal. The first slide plate 15 slides backward under the drive of the rodless cylinder, so that the clamping claw 20 moves to the top of the unloading conveyor belt 14. The lifting cylinder 17 contracts, the clamping claw 20 is released, and the three-way valve is placed on the unloading conveyor belt 14.

[0020] 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 three-way valve torque and air tightness testing device, characterized by: It includes a machine, which is provided with a base, a jig is provided on the base, a mounting slot is provided on the jig, plugs are provided on both sides of the jig, the plugs are driven by a clamping cylinder, a pressure plate is provided above the jig, the pressure plate is driven by a downward pressure cylinder, air holes are provided on the surface of the plug and the pressure plate facing the jig, the air holes are connected to an air source through a pipeline, a feeding mechanism is provided on one side of the base, a through hole is provided at the bottom of the mounting slot, a rotating shaft is provided in the through hole, a knob slot is provided on the upper end surface of the rotating shaft, and a torque testing mechanism is connected to the bottom end of the rotating shaft.

2. The three-way valve torque and air tightness testing device according to claim 1, characterized in that: The torque testing mechanism includes a servo motor arranged in the machine, an output end of the servo motor is connected to one end of a reducer, and the other end of the reducer is connected to the bottom end of the rotating shaft through a torque sensor.

3. The three-way valve torque and air tightness testing device according to claim 1, characterized in that: The unloading mechanism includes a longitudinally arranged unloading conveyor belt, one side of the unloading conveyor belt is slidably connected to a first slide by a slide rail parallel to the unloading conveyor belt, the first slide is driven by a rodless cylinder, a vertical plate is provided on the first slide, and a lifting cylinder with an output end facing upward is vertically provided on the front of the vertical plate, the top rod of the lifting cylinder is connected to a mounting plate, the upper end surface of the mounting plate is connected to a motor with an output end facing downward, the output end of the motor is connected to one end of a connecting plate, and the lower end surface of the other end of the connecting plate is connected to a clamping claw, the rear of the base is slidably connected to a second slide by a transverse slide rail, the second slide is driven by a rodless cylinder, a bracket is provided on the second slide, and the downward pressure cylinder is provided with the top of the bracket.

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