Pneumatic pressing device for pressure resistance test

Abstract

The utility model discloses a pneumatic pressing device for a pressure resistance test, which relates to the technical field of instrument detection and comprises a water tank, an input pipe is arranged at the front end of the water tank in a penetrating manner, a second three-way valve is arranged at the front end of the input pipe, an air pump is arranged at the front end of the second three-way valve, and a discharge pipe is arranged at the rear end of the water tank in a penetrating manner. A first three-way valve is arranged at the rear end of the discharge pipe, a pressure gauge is arranged at the rear end of the first three-way valve, a water inlet pipe is arranged on one side of the second three-way valve, a water outlet pipe is arranged on one side of the first three-way valve, a water pump is arranged at the bottom of the water inlet pipe, and the top end of the water pump is installed at the bottom of the water tank through a pipeline; one end of the water outlet pipe is mounted on one side of the water tank. According to the utility model, a series of structures are arranged, so that the detection result is visual, the equipment structure is simple, the operation steps are simple, the efficiency is higher, and the pneumatic pressing device for the pressure resistance test can be used for pressure resistance tests of various water meters.

Description

TECHNICAL FIELD

[0001] The utility model relates to instrument detection technical field, concretely is a kind of pneumatic pressurizing device for pressure test. BACKGROUND

[0002] Water meter will bear certain water pressure or air pressure inside when using, in order to ensure that the product produced meets the use pressure requirement, it needs to be pressure tested, to check whether there is leakage under high pressure. Pressure test needs air pump pressurization, the existing pneumatic pressurizing device mostly only tests whether water meter appears crack when under high pressure, and the detection result cannot be intuitively shown, and the operation steps are more complex, affect detection efficiency. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of pneumatic pressurizing device for pressure test, to solve the problem raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of pneumatic pressurizing device for pressure test, including water tank, the front end of the water tank is provided with input pipe, the front end of the input pipe is provided with second three-way valve, the front end of the second three-way valve is provided with air pump, the rear end of the water tank is provided with discharge pipe, the rear end of the discharge pipe is provided with first three-way valve, the rear end of the first three-way valve is provided with pressure gauge, one side of the second three-way valve is provided with water inlet pipe, one side of the first three-way valve is provided with water outlet pipe, the bottom of the water inlet pipe is provided with water pump, the top of the water pump is installed in the bottom of water tank by pipeline, one end of the water outlet pipe is installed in one side of water tank, the input pipe and the one end of discharge pipe in the water tank are all detachably threadedly connected with general connection interface, the outer surface of two general connection interfaces is all provided with sealing ring, the opposite end of two sealing rings is all provided with adapter interface, one end of two adapter interfaces is commonly threadedly connected with water meter.

[0005] Preferably, the bottom end of the water tank is provided with lifting frame at four corners, four lifting frames elevate water tank, so that water tank can be placed on a plane, while ensuring that the water pump at the bottom of water tank does not come into contact with the ground, to avoid damage to the water pump caused by ground friction when running.

[0006] Preferably, two supports are arranged at the middle positions of the two sides of the water tank, the interiors of the two supports are respectively provided with telescopic rods, one ends of the two telescopic rods are respectively extended into the water tank, the extended ends of the two telescopic rods are respectively provided with clamping jaws, the outer surfaces of the two telescopic rods are respectively provided with springs, the two connecting pipe mouths at the bottom of the water meter are respectively connected with the input pipe and the discharge pipe, the top of the water meter is clamped by the two clamping jaws, so that the water meter cannot shake during detection, when the water meter is clamped, the two clamping jaws are pushed to the two sides of the water tank, so that the telescopic rods are retracted and the springs are compressed, and the clamping jaws are clamped to the top of the water meter by the springs after the clamping jaws are loosened.

[0007] Preferably, the bottom of the water meter is provided with connecting pipe mouths, so that the water meter can be connected.

[0008] Preferably, the interior of the sealing ring is provided with a cavity, the opposite ends of the universal connecting interface and the adapter interface are located in the cavity, the opposite ends of the universal connecting interface and the adapter interface are respectively provided with connecting rings, the circumferential surfaces of the two connecting rings are respectively provided with outer surface rubber rings, one sides of the two connecting rings are respectively provided with lateral rubber rings towards the two ends of the sealing ring, the adapter interface is matched with the connecting pipe mouths of the water meter to be detected, different adapter interfaces with different diameters can be selected according to different diameters of the water meter, when the water meter is connected, the universal interface is respectively installed on the input pipe and the discharge pipe, and then the two adapter interfaces are respectively connected with the two connecting pipe mouths of the water meter, the outer surface rubber ring is used for limiting, so that the connecting ring can rotate in the sealing ring, the gap is small, the lateral rubber ring further reduces the gap between the adapter interface and the universal connecting interface and the sealing ring, so that the sealing ring has a sealing effect, and the water meter can be pressed for detection.

[0009] Preferably, the middle section of the sealing ring is provided with a hose section, the hose section is a bellows pipe and has a certain elasticity, when the water meter is connected with the input pipe and the discharge pipe through the universal connecting interface and the adapter interface, the hose section guarantees the stability and sealing property of the connection due to the use of threaded connection.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] The utility model discloses a pressure test pneumatic pressing device, through the first three -way valve control air pump, the input pipe and the communication between the water pipe, the second three -way valve controls the communication between pressure gauge, discharge pipe and water outlet pipe, when carrying out water table pneumatic pressing test, air pump and input pipe communication, to the water table and pressurize, discharge pipe and pressure gauge communication, can accurately see the pressure that water table bears through pressure gauge, inject water body in the water tank, and directly see whether the water table appears the crack through whether appearing bubble, after pressurization test, through water inlet pipe and input pipe communication, discharge pipe and water outlet pipe communication, through water body circulation detection water table internal element can detect water flow after being under pressure, and the detection result is direct, and the equipment structure is simple, and the operation step is simple, and the efficiency is higher.

[0012] The utility model discloses a pressure test pneumatic pressing device, through the replaceable general connection interface and the adapter interface, can select for different caliber water table, make pressure test pneumatic pressing device can carry out pressure test to multiple water table. DETAILED DESCRIPTION

[0013] Figure 1 It is whole structure schematic diagram of the utility model;

[0014] Figure 2 It is whole structure side view plane schematic diagram of the utility model;

[0015] Figure 3 It is whole structure overhead schematic diagram of the utility model;

[0016] Figure 4 It is support structure schematic diagram of the utility model;

[0017] Figure 5 It is sealing ring structure schematic diagram of the utility model.

[0018] In the drawing: 1, water tank;2, support;3, clamping jaw;4, water meter;5, discharge pipe;6, first three -way valve;7, pressure gauge;8, water outlet pipe;9, input pipe;10, raise frame;11, air pump;12, second three -way valve;13, water inlet pipe;14, water pump;15, sealing ring;16, telescopic link;17, spring;18, connecting pipe mouth;19, general connection interface;20, adapter interface;21, connecting ring;22, outer surface rubber ring;23, lateral rubber ring;24, hose section. DETAILED DESCRIPTION

[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0020] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] As Figures 1 to 5As shown, the pneumatic pressing device for pressure test of the embodiment includes a water tank 1, an input pipe 9 is arranged through the front end of the water tank 1, a second three-way valve 12 is arranged at the front end of the input pipe 9, an air pump 11 is arranged at the front end of the second three-way valve 12, the air pump 11 can output air for pressure test, a discharge pipe 5 is arranged through the rear end of the water tank 1, a first three-way valve 6 is arranged at the rear end of the discharge pipe 5, a pressure gauge 7 is arranged at the rear end of the first three-way valve 6, a water inlet pipe 13 is arranged at one side of the second three-way valve 12, the input pipe 9 and the discharge pipe 5 in the water tank 1 are detachably and threadedly connected with a universal connecting interface 19 at one end, the outer surfaces of the two universal connecting interfaces 19 are provided with sealing rings 15, the opposite ends of the two sealing rings 15 are provided with adapter interfaces 20, a water meter 4 is threadedly connected at one end of the two adapter interfaces 20, the universal connecting interface 19 is matched with the input pipe 9 and the discharge pipe 5, and is used for fixing the adapter interface 20, the adapter interface 20 has different diameters, and different diameters of the adapter interface 20 can be selected according to different diameters of the water meter 4, the second three-way valve 12 can adjust the communication state of the water inlet pipe 13, the air pump 11 and the input pipe 9, when the pressure test is performed, the second three-way valve 12 closes the water inlet pipe 13, so that the input pipe 9 is in communication with the air pump 11, when the water flow test is performed, the second three-way valve 12 closes the air pump 11, so that the water inlet pipe 13 is in communication with the input pipe 9, one side of the first three-way valve 6 is provided with a water outlet pipe 8, the first three-way valve 6 can adjust the communication state of the water outlet pipe 8, the pressure gauge 7 and the discharge pipe 5, when the pressure test is performed, the first three-way valve 6 closes the water outlet pipe 8, so that the discharge pipe 5 is in communication with the pressure gauge 7, the air pump 11 inputs air into the water meter 4 through the input pipe 9, the air is stored in the water meter 4, the input pipe 9, the discharge pipe 5 and the pressure gauge 7, the generated pressure is displayed by the pressure gauge 7, the pressure test of the water meter 4 is performed, when the test is performed, the water tank 1 is filled with water, if air bubbles appear at the position of the water meter 4, it means that the water meter 4 is affected by the pressure and cracks appear, and leakage occurs, if air bubbles appear at the position of the sealing ring 15, it means that the sealing ring 15 leaks and needs to be replaced, the bottom of the water inlet pipe 13 is provided with a water pump 14, the top end of the water pump 14 is installed at the bottom of the water tank 1 through a pipeline, one end of the water outlet pipe 8 is installed at one side of the water tank 1, when the water meter 4 is pressurized, the second three-way valve 12 closes the air pump 11, so that the water inlet pipe 13 is in communication with the input pipe 9, the first three-way valve 6 makes the water outlet pipe 8 and the discharge pipe 5 in communication, the water pump 14 extracts the water in the water tank 1 through the water inlet pipe 13 and the input pipe 9, the water is transported from the water meter 4, and then is input into the water tank 1 through the discharge pipe 5 to circulate, the water pump 14 can adjust the water flow, and the water flow output by the water pump 14 is compared with the actual water flow of the water meter 4, so as to observe whether the internal elements of the water meter 4 are deformed after the pressure test and affect the flow detection.

[0022] Specifically, the bottom end of the water tank 1 is provided with four lifting frames 10, which can elevate the water tank 1 and ensure that the water pump 14 at the bottom of the water tank 1 is not in contact with the ground, avoiding damage to the water pump 14 caused by friction with the ground during operation.

[0023] Further, two supports 2 are arranged at the middle positions of the two sides of the water tank 1, and the inside of each support 2 is provided with a telescopic rod 16, one end of each telescopic rod 16 extends into the water tank 1, and the extending end of each telescopic rod 16 is provided with a clamping jaw 3, which can be detachably replaced, such as a threaded connection, to facilitate the use of different types of clamping jaws 3 for different specifications of water meters, and the outer surface of each telescopic rod 16 is provided with a spring 17, which is always outwardly reset to connect two connecting pipes 18 at the bottom of the water meter 4 with the input pipe 9 and the discharge pipe 5, respectively, and the top of the water meter 4 is clamped by the two clamping jaws 3 to ensure that the water meter 4 does not shake during detection, and when clamping the water meter 4, the two clamping jaws 3 are pushed to the sides of the water tank 1, so that the telescopic rod 16 is retracted and the spring 17 is compressed, and after the clamping jaws 3 are released, the spring 17 pushes the clamping jaws 3 to clamp the top of the water meter 4 for clamping treatment, it should be noted that the size of the support 2 should meet the size requirements of the water meter to be detected, to avoid affecting the movement of the clamping jaw 3 and thus affecting the realization of the clamping effect.

[0024] Further, the bottom of the water meter 4 is provided with two connecting pipes 18, so that the water meter 4 can be connected.

[0025] Further, the inside of the sealing ring 15 is provided with a cavity, and the opposite ends of the universal connection interface 19 and the adapter interface 20 are located inside the cavity, the opposite ends of the universal connection interface 19 and the adapter interface 20 are provided with a connecting ring 21, the circumferential surface of the two connecting rings 21 is provided with an outer surface rubber ring 22, and the side of each connecting ring 21 is provided with a lateral rubber ring 23 facing the direction of the two ends of the sealing ring 15, the adapter interface 20 matches the connecting pipe 18 of the water meter 4 to be detected, and different diameters of the adapter interface 20 can be selected for water meters 4 of different diameters, and when connecting the water meter 4, the universal interface is installed on the input pipe 9 and the discharge pipe 5 respectively, and then the two adapter interfaces 20 are connected to the two connecting pipes 18 of the water meter 4, the outer surface rubber ring 22 is used for limiting, so that the connecting ring 21 can rotate inside the sealing ring 15, and the gap is small, the lateral rubber ring 23 further reduces the gap between the adapter interface 20 and the universal connection interface 19 and the sealing ring 15, so that the sealing ring 15 has a sealing effect, and the water meter 4 can be pressed for detection.

[0026] Further, the middle section of the sealing ring 15 is provided with a hose section 24, which is a bellows with certain elasticity, and when the water meter 4 is connected to the input pipe 9 and the discharge pipe 5 through the universal connecting interface 19 and the adapter interface 20, the hose section 24 guarantees the stability and sealing of the connection because of the use of threaded connection.

[0027] The use method of the embodiment is as follows: when the pressure resistance test of the water meter 4 is performed, different adapter interfaces 20 can be selected according to different diameters of the water meter 4, the universal interfaces are respectively installed on the input pipe 9 and the discharge pipe 5 when the water meter 4 is connected, then the two adapter interfaces 20 are connected to the two connecting pipe openings 18 of the water meter 4, water is injected into the water tank 1 after the connection is completed, then the pressure test is performed, the first three-way valve 6 closes the water outlet pipe 8, so that the discharge pipe 5 is in communication with the pressure gauge 7, the air pump 11 inputs air into the water meter 4 through the input pipe 9, the air is stored in the water meter 4, the input pipe 9, the discharge pipe 5 and the pressure gauge 7, and the pressure generated is displayed by the pressure gauge 7, the pressure resistance test of the water meter 4 is performed, if bubbles appear at the position of the water meter 4, then cracks appear on the water meter 4 due to the influence of pressure, and leakage appears, if bubbles appear at the position of the sealing ring 15, then the sealing ring 15 leaks and needs to be replaced, when the water meter 4 is pressurized, the air pump 11 is closed by the second three-way valve 12, so that the water inlet pipe 13 is in communication with the input pipe 9, the first three-way valve 6 makes the water outlet pipe 8 and the discharge pipe 5 in communication, the water pump 14 is used to extract the water in the water tank 1 through the water inlet pipe 13 and the input pipe 9, so that the water passes through the water meter 4 and is input into the water tank 1 through the discharge pipe 5 to circulate, the water pump 14 can adjust the water flow, and the water flow output by the water pump 14 is compared with the actual water flow of the water meter 4, so as to observe whether the internal elements of the water meter 4 are deformed to affect the flow detection after the pressure test.

[0028] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement of some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pneumatic pressing device for pressure test, comprising a water tank (1), characterized in that: The front end of the water tank (1) is provided with an input pipe (9), the front end of the input pipe (9) is provided with a second three-way valve (12), the front end of the second three-way valve (12) is provided with an air pump (11), the rear end of the water tank (1) is provided with a discharge pipe (5), the rear end of the discharge pipe (5) is provided with a first three-way valve (6), the rear end of the first three-way valve (6) is provided with a pressure gauge (7), one side of the second three-way valve (12) is provided with a water inlet pipe (13), one side of the first three-way valve (6) is provided with a water outlet pipe (8), the bottom of the water inlet pipe (13) is provided with a water pump (14), the top end of the water pump (14) is installed at the bottom of the water tank (1) through a pipeline, one end of the water outlet pipe (8) is installed on one side of the water tank (1), and one end of the input pipe (9) and the discharge pipe (5) inside the water tank (1) is detachably and threadedly connected with a universal connecting interface (19). The outer surfaces of the two universal connecting interfaces (19) are provided with sealing rings (15), and the opposite ends of the two sealing rings (15) are provided with adapter interfaces (20). One end of the two adapter interfaces (20) is commonly and threadedly connected with a water meter (4).

2. The pneumatic pressing device for voltage withstanding test according to claim 1, characterized in that: The bottom end of the water tank (1) is provided with a lifting frame (10) at four corner positions.

3. The pneumatic pressing device for voltage withstanding test according to claim 1, characterized in that: Two supports (2) are arranged at the middle positions of the two sides of the water tank (1), the interiors of the two supports (2) are provided with telescopic rods (16), one end of the two telescopic rods (16) extends into the water tank (1), and the extending end of the two telescopic rods (16) is provided with a clamping jaw (3). The outer surfaces of the two telescopic rods (16) are provided with springs (17).

4. The pneumatic pressing device for voltage withstanding test according to claim 1, characterized in that: The bottom of the water meter (4) is provided with connecting pipe mouths (18) on both sides.

5. The pneumatic pressing device for voltage withstanding test according to claim 1, characterized in that: The interiors of the sealing rings (15) are provided with cavities, the opposite ends of the universal connecting interfaces (19) and the adapter interfaces (20) are located in the cavities, the opposite ends of the universal connecting interfaces (19) and the adapter interfaces (20) are provided with connecting rings (21), the circumferential surfaces of the two connecting rings (21) are provided with outer surface rubber rings (22), and one side of the two connecting rings (21) is provided with a lateral rubber ring (23) towards the direction of the two ends of the sealing ring (15).

6. The pneumatic pressing device for voltage withstanding test according to claim 1, characterized in that: The middle section of the sealing ring (15) is provided with a hose section (24).

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