Butterfly valve airtightness detection device

Abstract

The utility model discloses a butterfly valve air tightness detection device which comprises a supporting frame, the top end of the supporting frame is fixedly connected with a lower support, the surface of the lower support is provided with a lower installation cavity, a first air bag is arranged in the lower installation cavity, and the bottom end of the supporting frame is fixedly connected with a first air pump. One end face of the butterfly valve is installed on the lower support, the rotating motor is started, the two-way lead screw rotates, the movable plates slide, the two movable plates move mutually through the guiding effect of the limiting rod, the fixed clamping plate is driven to be close to the surface of the butterfly valve, and therefore the position of the butterfly valve is fixed, and the first air pump is started; the external air is pumped into the first air bag through the first air inlet pipe, and the volume of the first air bag is increased due to the increase of the internal air, so that the gap between the butterfly valve and the lower support is sealed, and the sealing effect at the joint is ensured while the adaptability to butterfly valves with different sizes is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection technical field, concretely is a butterfly valve airtightness detection device. BACKGROUND

[0002] The butterfly valve is a simple structure regulating valve, and the butterfly valve capable of being used for on-off control of low-pressure pipeline medium refers to a valve with a disc as a closing part, which rotates around a valve shaft to achieve opening and closing.

[0003] According to the butterfly valve airtightness detection device disclosed by the publication number CN219757653U, a lower support is fixedly arranged on a detection table, an upper sealing part for sealing one end face of the butterfly valve is movably arranged above the lower support, an air passage is formed in the lower support along the height direction of the lower support, a cylindrical protrusion one is arranged above the lower support and is in communication with the air passage, a plurality of annular steps one are arranged on the outer circumference of the cylindrical protrusion one along the height direction of the cylindrical protrusion one, and the diameters of the plurality of annular steps one gradually increase from top to bottom, the plurality of annular steps one arranged on the outer circumference of the cylindrical protrusion one can be used to place butterfly valve bodies of different models, and the butterfly valve bodies can be sealed in cooperation with the upper sealing part, compared with the conventional detection equipment specially made for butterfly valves of different models, the utility model has high universality and can reduce the production cost of enterprises.

[0004] The annular steps one can be used to place butterfly valve bodies of different models, but the number of the annular steps one has certain limitations, so that the device can only detect a few butterfly valves of specified sizes, and the annular steps one are arranged in the longitudinal direction, so that the size of the device is high after installation and the stability is low. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a butterfly valve airtightness detection device to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a butterfly valve airtightness detection device, comprising a support frame, the top end of the support frame is fixedly connected with a lower support, the surface of the lower support is provided with a lower mounting cavity, the inside of the lower mounting cavity is provided with a first air bag, the bottom end of the support frame is fixedly connected with a first air pump, the top end of the first air pump is fixedly connected with a first air inlet pipe, the bottom end of the support frame is fixedly connected with a second air pump, and the top end of the second air pump is fixedly connected with a second air inlet pipe.

[0007] As a further preferred embodiment of the present technical solution, a hole groove is formed in the top of the lower support, the second air inlet pipe is located in the hole groove, the lower mounting cavity adopts an annular structure, and the first air bag and the first air inlet pipe are fixedly connected.

[0008] As a further preferred of the technical solution, the top end of the support frame is fixedly connected with a mounting plate, the right side of the mounting plate is fixedly connected with a rotary motor, the output end of the rotary motor is fixedly connected with a bidirectional screw rod, the surface of the bidirectional screw rod is threadedly connected with a moving plate, the top end of the moving plate is fixedly connected with a fixed clamping plate, and the inside of the moving plate is slidably connected with a limiting rod.

[0009] As a further preferred of the technical solution, the top end of the support frame is fixedly connected with a connecting frame, the top end of the connecting frame is fixedly connected with a gas cylinder, the output end of the gas cylinder is fixedly connected with a connecting plate, the middle part of the connecting plate is slidably connected with a sliding rod, the top end of the sliding rod is fixedly connected with a limiting plate, the surface of the sliding rod is movably sleeved with a connecting spring, and the bottom end of the sliding rod is fixedly connected with a top plate.

[0010] As a further preferred of the technical solution, the connecting plate is located in the inside of the connecting frame, two guide holes are formed in the middle part of the connecting plate, the sliding rod is located in the inside of the guide hole, and the connecting spring is located between the connecting plate and the top plate.

[0011] As a further preferred of the technical solution, the bottom end of the top plate is fixedly connected with an upper support, an upper mounting cavity is formed in the surface of the upper support, a second air bag is arranged in the inside of the upper mounting cavity, a third air inlet pipe is fixedly connected to the inner wall of the second air bag, one end, away from the second air bag, of the third air inlet pipe is fixedly connected with a third air pump, the top end of the upper support is fixedly connected with an exhaust pipe, and the surface of the exhaust pipe is fixedly connected with an air pressure detection table.

[0012] As a further preferred of the technical solution, a sealing cavity is formed in the inside of the upper support, the sealing cavity and the exhaust pipe form a gas passage, and the third air pump and the air pressure detection table are fixedly connected with the top plate.

[0013] The butterfly valve air tightness detection device has the following beneficial effects:

[0014] (1) The utility model discloses a butterfly valve is installed on the lower support through one end face, starts rotary motor, makes bidirectional screw rod rotate, and the sliding of moving plate is generated, and the guiding effect of limiting rod makes two moving plates move to each other, and drives fixed clamping plate to approach butterfly valve surface, thereby fixing its position, starts first air pump, and the outside air is sent to the inside of first air bag through first air inlet pipe, and the volume of first air bag is increased due to the increase of internal gas, thereby sealing the gap between butterfly valve and lower support, the sealing effect of connecting place is guaranteed while the adaptability of different size butterfly valve is improved.

[0015] (2) The utility model discloses a start air cylinder, make it drive the connecting plate to move down, after moving to certain height, the upper support and the other end surface of butterfly valve abut, and the slide bar slides in the connecting plate, and the connecting spring is extruded and contracts, and the lower movement of upper support is slowed down to a certain degree through the elastic force of connecting spring, thereby avoiding that the mechanical pressure is too big to cause damage to butterfly valve. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is structure schematic diagram of the utility model;

[0017] Figure 2 It is structure schematic diagram of the utility model from the top;

[0018] Figure 3 It is structure schematic diagram of the utility model from the section;

[0019] Figure 4 It is structure schematic diagram of the utility model of lower support and first air bag unfolding;

[0020] Figure 5 It is structure schematic diagram of the utility model of upper support and second air bag unfolding.

[0021] In the drawing: 1, support frame;2, lower support;3, lower installation cavity;4, first air bag;5, first air pump;6, first air inlet pipe;7, second air pump;8, second air inlet pipe;9, mounting plate;10, rotary motor;11, bidirectional screw;12, moving plate;13, fixed clamping plate;14, limit rod;15, connecting frame;16, air cylinder;17, connecting plate;18, slide bar;19, limit plate;20, connecting spring;21, top plate;22, upper support;23, upper installation cavity;24, second air bag;25, third air inlet pipe;26, third air pump;27, exhaust pipe;28, air pressure gauge. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model.

[0023] The utility model provides technical scheme: as Figure 1 And Figure 5 As shown in the figure, in the embodiment, a butterfly valve air tightness detection device, including support frame 1, the top of support frame 1 is fixedly connected with lower support 2, the surface of lower support 2 is provided with lower installation cavity 3, the inside of lower installation cavity 3 is provided with first air bag 4, the bottom of support frame 1 is fixedly connected with first air pump 5, the top of first air pump 5 is fixedly connected with first air inlet pipe 6, the bottom of support frame 1 is fixedly connected with second air pump 7, and the top of second air pump 7 is fixedly connected with second air inlet pipe 8.

[0024] By starting the first air pump 5, the outside air is pumped into the first air bag 4 through the first air inlet pipe 6, and the volume of the first air bag 4 increases due to the increase of the internal gas, thereby sealing the gap between the butterfly valve and the lower support 2, improving the adaptability of different size butterfly valves while ensuring the sealing effect of the connection.

[0025] The top of the lower support 2 is provided with a hole slot, and the second air inlet pipe 8 is located inside the hole slot. The lower mounting cavity 3 adopts a ring structure, and the first air bag 4 and the first air inlet pipe 6 are fixedly connected.

[0026] The top end of the support frame 1 is fixedly connected with the mounting plate 9, the right side of the mounting plate 9 is fixedly connected with the rotary motor 10, the output end of the rotary motor 10 is fixedly connected with the bidirectional screw rod 11, the surface of the bidirectional screw rod 11 is threadedly connected with the moving plate 12, the top end of the moving plate 12 is fixedly connected with the fixed clamping plate 13, and the inside of the moving plate 12 is slidingly connected with the limiting rod 14.

[0027] By installing one end face of the butterfly valve on the lower support 2, starting the rotary motor 10, rotating the bidirectional screw rod 11, sliding the moving plate 12, and moving the two moving plates 12 relative to each other through the guiding action of the limiting rod 14, the fixed clamping plate 13 is brought close to the surface of the butterfly valve, thereby fixing the position, and further ensuring the stability during detection.

[0028] The top end of the support frame 1 is fixedly connected with the connecting frame 15, the top end of the connecting frame 15 is fixedly connected with the air cylinder 16, the output end of the air cylinder 16 is fixedly connected with the connecting plate 17, the middle part of the connecting plate 17 is slidingly connected with the sliding rod 18, the top end of the sliding rod 18 is fixedly connected with the limiting plate 19, the surface of the sliding rod 18 is movably sleeved with the connecting spring 20, and the bottom end of the sliding rod 18 is fixedly connected with the top plate 21.

[0029] By starting the air cylinder 16, the connecting plate 17 is moved downward, and after moving to a certain height, the upper support 22 abuts against the other end face of the butterfly valve, and the sliding rod 18 slides in the connecting plate 17. The connecting spring 20 is extruded and contracted, and the downward movement of the upper support 22 is slowed down to a certain extent by the elastic force of the connecting spring 20, so as to avoid damage to the butterfly valve caused by excessive mechanical pressure.

[0030] The connecting plate 17 is located inside the connecting frame 15, two guide holes are formed in the middle part of the connecting plate 17, the sliding rod 18 is located inside the guide hole, and the connecting spring 20 is located between the connecting plate 17 and the top plate 21.

[0031] The bottom end of the top plate 21 is fixedly connected with an upper support 22, the surface of the upper support 22 is provided with an upper mounting cavity 23, the inside of the upper mounting cavity 23 is provided with a second air bag 24, the inner wall of the second air bag 24 is fixedly connected with a third air inlet pipe 25, the end, away from the second air bag 24, of the third air inlet pipe 25 is fixedly connected with a third air pump 26, the top end of the upper support 22 is fixedly connected with an exhaust pipe 27, and the surface of the exhaust pipe 27 is fixedly connected with a gas pressure detection table 28.

[0032] The inside of the upper support 22 is provided with a sealing cavity, the sealing cavity and the exhaust pipe 27 form a gas passage, and the third air pump 26 and the gas pressure detection table 28 are fixedly connected with the top plate 21.

[0033] The utility model provides a butterfly valve air tightness detection device, specific working principle is as follows:

[0034] When using, the end face of the butterfly valve is installed on the lower support 2, the rotary motor 10 is started, the bidirectional screw rod 11 is rotated, the moving plate 12 is slid, and the two moving plates 12 are moved to each other and drive the fixed clamping plate 13 to approach the surface of the butterfly valve through the guiding effect of the limiting rod 14, so that the position is fixed, the first air pump 5 is started, the outside air is pumped to the inside of the first air bag 4 through the first air inlet pipe 6, the volume of the first air bag 4 is increased due to the increase of the inside gas, so that the gap between the butterfly valve and the lower support 2 is sealed, the cylinder 16 is started, the connecting plate 17 is moved downwards, after moving to a certain height, the upper support 22 abuts against the other end face of the butterfly valve, and the slide rod 18 slides in the connecting plate 17, the connecting spring 20 is extruded and shrunk, the downward movement of the upper support 22 is slowed down to a certain extent through the elastic force of the connecting spring 20, after the upper support 22 and the other end face of the butterfly valve are adapted, the third air pump 26 is started, the outside air is transported to the inside of the second air bag 24 through the third air inlet pipe 25, the upper support 22 and the butterfly valve are sealed through the second air bag 24, the second air pump 7 is started, the outside air is transported to the cavity between the lower support 2 and the butterfly valve through the second air inlet pipe 8, and the air tightness of the butterfly valve body is detected by observing the indication of the gas pressure detection table 28.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve air tightness detection device, comprising a support frame (1), characterized in that: The top end of the support frame (1) is fixedly connected with a lower support (2), the surface of the lower support (2) is provided with a lower mounting cavity (3), the inside of the lower mounting cavity (3) is provided with a first air bag (4), the bottom end of the support frame (1) is fixedly connected with a first air pump (5), the top end of the first air pump (5) is fixedly connected with a first air inlet pipe (6), the bottom end of the support frame (1) is fixedly connected with a second air pump (7), and the top end of the second air pump (7) is fixedly connected with a second air inlet pipe (8).

2. The device for detecting the air tightness of a butterfly valve according to claim 1, characterized in that: The top of the lower support (2) is provided with a hole groove, the second air inlet pipe (8) is located in the hole groove, the lower mounting cavity (3) adopts an annular structure, and the first air bag (4) and the first air inlet pipe (6) are fixedly connected.

3. The device of claim 1, wherein: The top end of the support frame (1) is fixedly connected with a mounting plate (9), the right side of the mounting plate (9) is fixedly connected with a rotary motor (10), the output end of the rotary motor (10) is fixedly connected with a bidirectional screw rod (11), the surface of the bidirectional screw rod (11) is threadedly connected with a moving plate (12), the top end of the moving plate (12) is fixedly connected with a fixed clamping plate (13), and the inside of the moving plate (12) is slidably connected with a limiting rod (14).

4. The device of claim 1, wherein: The top end of the support frame (1) is fixedly connected with a connecting frame (15), the top end of the connecting frame (15) is fixedly connected with an air cylinder (16), the output end of the air cylinder (16) is fixedly connected with a connecting plate (17), the middle part of the connecting plate (17) is slidably connected with a sliding rod (18), the top end of the sliding rod (18) is fixedly connected with a limiting plate (19), the surface of the sliding rod (18) is movably sleeved with a connecting spring (20), and the bottom end of the sliding rod (18) is fixedly connected with a top plate (21).

5. The device of claim 4, wherein: The connecting plate (17) is located in the connecting frame (15), two guide holes are formed in the middle part of the connecting plate (17), the sliding rod (18) is located in the guide hole, and the connecting spring (20) is located between the connecting plate (17) and the top plate (21).

6. The device of claim 4, wherein: The bottom end of the top plate (21) is fixedly connected with an upper support (22), the surface of the upper support (22) is provided with an upper mounting cavity (23), the inside of the upper mounting cavity (23) is provided with a second air bag (24), the inner wall of the second air bag (24) is fixedly connected with a third air inlet pipe (25), one end, away from the second air bag (24), of the third air inlet pipe (25) is fixedly connected with a third air pump (26), the top end of the upper support (22) is fixedly connected with an exhaust pipe (27), and the surface of the exhaust pipe (27) is fixedly connected with an air pressure detection table (28).

7. The device of claim 6, wherein: The inside of the upper support (22) is provided with a sealing cavity, the sealing cavity and the exhaust pipe (27) form a gas passage, and the third air pump (26) and the air pressure detection table (28) are fixedly connected with the top plate (21).

Images