Fatigue test device for rubber diaphragm

Abstract

The invention relates to the technical field of rubber diaphragm piece detection, in particular to a rubber diaphragm piece fatigue test device which comprises a rack, a positioning mechanism used for positioning a diaphragm piece and an air supply mechanism used for supplying air to the diaphragm piece are arranged on the surface of the rack, and the invention relates to the technical field of rubber diaphragm piece detection. According to the rubber diaphragm piece fatigue test device, a diaphragm piece is inserted into a positioning groove between a fixing block and a placement seat, a second hydraulic cylinder drives an upper pressing plate to move downwards to extrude a rubber spring air bag, the rubber spring air bag is extruded and contracted, internal gas is conveyed to a communication valve through a gas supply pipeline and conveyed into the diaphragm piece to enable the diaphragm piece to expand, and then the diaphragm piece is clamped. Then the second hydraulic cylinder drives the upper pressing plate to rise to drive the rubber spring airbag to reset, negative pressure is formed at the moment, gas in the diaphragm is pumped back, the diaphragm is contracted, then the steps are repeated, the diaphragm can be rapidly expanded and contracted, fatigue resistance detection is achieved, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of rubber diaphragm detection, in particular to a rubber diaphragm fatigue test device. Background Art

[0002] When the plate and frame filter press is in use, the pressure on the sludge is increased by the rubber diaphragm to enhance the dehydration effect. The existing rubber diaphragm needs to be inflated and deflated after reproduction to test its use effect and life. However, the existing testing equipment uses an air pump to inflate and deflate when inflating and deflation. When a large number of tests are carried out, the inflation efficiency is low. If the inflation efficiency needs to be accelerated, a large number of inflation pumps need to be provided, which increases the cost of use. Now a test equipment is proposed that can quickly inflate and deflate a large number of rubber diaphragms. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a rubber diaphragm fatigue test device to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rubber diaphragm fatigue test device, comprising a frame, the surface of the frame is respectively provided with a positioning mechanism for positioning the diaphragm and an air supply mechanism for supplying air to the diaphragm, the positioning mechanism comprises a fixed block and a placement seat fixedly connected to the surface of the frame, both sides of the bottom of the fixed block are slidably connected with side clamps driven by a first hydraulic cylinder, the fixed block and the placement seat are opposite to each other. The side is provided with a positioning groove for positioning the diaphragm, the surface of the fixed block is fixed with a connecting valve connected to the diaphragm air inlet pipe, and the side of the side clamp is provided with a pressure sensor;

[0005] The air supply mechanism includes a fixed plate fixed to the surface of the frame, an air pump and a second hydraulic cylinder, the bottom end of the piston rod of the second hydraulic cylinder is fixedly connected to an upper pressure plate, the top of the fixed plate is fixedly connected to a rubber spring airbag, the top of the rubber spring airbag is fixedly connected to the bottom of the upper pressure plate, the top of the fixed plate is fixedly connected to a fixed sleeve sleeved on the periphery of the rubber spring airbag, the top of the rubber spring airbag is fixedly connected to a sliding sleeve slidably connected to the inner cavity of the fixed sleeve, the air outlet of the air pump is connected to the top of the rubber spring airbag through an air outlet pipe, and the bottom of the rubber spring airbag is connected to a connecting valve through an air supply pipe. When in use, the diaphragm is inserted into the positioning groove between the fixed block and the placement seat, and the air inlet pipe of the diaphragm is connected. It is connected to the connecting valve, and then the two side clamps are driven by the first hydraulic cylinder to move to squeeze the diaphragm. After the two side clamps squeeze the diaphragm, sludge is input through the mud supply pipeline to simulate the real working environment. At this time, the connecting valve is opened, and the upper pressure plate is driven downward by the second hydraulic cylinder to squeeze the rubber spring airbag. The rubber spring airbag is squeezed and contracted, and the internal gas is transported to the connecting valve through the air supply pipeline and then to the diaphragm to expand it. Then the second hydraulic cylinder drives the upper pressure plate to rise, driving the rubber spring airbag to reset. At this time, negative pressure is formed, and the gas in the diaphragm is drawn back to shrink it. Then the above steps are repeated. The diaphragm can be quickly expanded and contracted to achieve fatigue resistance testing, which greatly speeds up the detection efficiency.

[0006] As a further solution of the present invention: a finished rubber diaphragm piece filled with hydraulic oil after sealing treatment is fixedly connected inside the side clamp, which effectively simulates the real use environment, squeezes the diaphragm piece to be tested from both sides, and the internal hydraulic oil filling is not easy to deform, effectively feeding back suction to the diaphragm piece.

[0007] As a further solution of the present invention: the top of the side clamp is connected to the mud supply pipeline. When the two side clamps squeeze the diaphragm, sludge is input through the mud supply pipeline to simulate the real working environment.

[0008] As a further solution of the present invention: a plurality of positioning mechanisms and rubber spring airbags are provided, and are symmetrically arranged one by one on the surface of the frame, so that a plurality of diaphragms can be tested at the same time.

[0009] As a further solution of the present invention: the sliding sleeve is arranged to be small at the top and large at the bottom, the top is fixedly connected to the surface of the rubber spring airbag, and the bottom is sleeved on the surface of the rubber spring airbag. Through the arrangement of the sliding sleeve and the fixed sleeve, the rubber spring airbag is limited, and annular pressure is applied to it, reducing its radial variation, so that it contracts up and down and effectively inputs the internal gas into the diaphragm.

[0010] As a further solution of the present invention: the upper pressing plate is slidably arranged on the surface of the frame to play a role in auxiliary positioning.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the present invention, the diaphragm is inserted into the positioning groove between the fixed block and the placement seat, and the second hydraulic cylinder drives the upper pressure plate to move downward to squeeze the rubber spring airbag. The rubber spring airbag is squeezed and contracted, and the internal gas is transported to the connecting valve through the air supply pipeline and transported to the diaphragm to expand it. Then the second hydraulic cylinder drives the upper pressure plate to rise, driving the rubber spring airbag to reset. At this time, negative pressure is formed, and the gas in the diaphragm is drawn back to shrink it. Then the above steps are repeated, and the diaphragm can be quickly expanded and contracted to achieve fatigue resistance detection, which greatly speeds up the detection efficiency.

[0013] 2. The present invention limits the rubber spring airbag by setting the sliding sleeve and the fixed sleeve, applies circumferential pressure to it, reduces its radial variation, and makes it shrink up and down to effectively input the internal gas into the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the test state of the present invention.

[0016] In the figure: 1, frame; 2, air pump; 3, second hydraulic cylinder; 4, air outlet pipe; 5, upper pressure plate; 6, rubber spring airbag; 7, fixed plate; 8, fixed sleeve; 9, sliding sleeve; 10, fixed block; 11, connecting valve; 12, first hydraulic cylinder; 13, side clamping plate; 14, placement seat; 15, diaphragm; 16, pressure sensor. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0018] See also Figure 1-2The present invention provides a technical solution: a rubber diaphragm fatigue test device, comprising a frame 1, the surface of the frame 1 is respectively provided with a positioning mechanism for positioning a diaphragm 15 and an air supply mechanism for supplying air to the diaphragm 15, the positioning mechanism comprises a fixed block 10 and a placement seat 14 fixedly connected to the surface of the frame 1, both sides of the bottom of the fixed block 10 are slidably connected with side clamps 13 driven by a first hydraulic cylinder 3, the fixed block 10 and the placement seat 14 are opposite to each other. The side is provided with a positioning groove for positioning the diaphragm 15, the surface of the fixed block 10 is fixed with a connecting valve 11 connected with the air inlet pipe of the diaphragm 15, and the side of the side clamp 13 is provided with a pressure sensor 16;

[0019] The air supply mechanism includes a fixed plate 7 fixed on the surface of the frame 1, an air pump 2 and a second hydraulic cylinder 3, the bottom end of the piston rod of the second hydraulic cylinder 3 is fixedly connected to an upper pressure plate 5, the top of the fixed plate 7 is fixedly connected to a rubber spring airbag 6, the top of the rubber spring airbag 6 is fixedly connected to the bottom of the upper pressure plate 5, the top of the fixed plate 7 is fixedly connected to a fixed sleeve 8 sleeved on the periphery of the rubber spring airbag 6, the top of the rubber spring airbag 6 is fixedly connected to a sliding sleeve 9 slidably connected to the inner cavity of the fixed sleeve 8, the air outlet of the air pump 2 is connected to the top of the rubber spring airbag 6 through the air outlet pipe 4, and the bottom of the rubber spring airbag 6 is connected to the connecting valve 11 through the air supply pipe. When in use, the diaphragm 15 is inserted into the positioning groove between the fixed block 10 and the placement seat 14, and the air inlet pipe of the diaphragm 15 is connected to the connecting valve 11 The two side clamps 13 are connected, and then the first hydraulic cylinder 3 drives the two side clamps 13 to move to squeeze the diaphragm 15. After the two side clamps 13 squeeze the diaphragm 15, sludge is input through the mud supply pipeline to simulate the real working environment. At this time, the connecting valve 11 is opened, and the second hydraulic cylinder 3 drives the upper pressure plate 5 to move downward to squeeze the rubber spring airbag 6. The rubber spring airbag 6 is squeezed and contracted, and the internal gas is transported to the connecting valve 11 through the air supply pipeline, and then transported to the diaphragm 15 to expand it. Then the second hydraulic cylinder 3 drives the upper pressure plate 5 to rise, driving the rubber spring airbag 6 to reset. At this time, negative pressure is formed, and the gas in the diaphragm 15 is drawn back to shrink it. Then the above steps are repeated, and the diaphragm 15 can be quickly expanded and contracted to achieve fatigue resistance detection, which greatly speeds up the detection efficiency.

[0020] A rubber diaphragm piece filled with hydraulic oil after sealing treatment is fixedly connected inside the side clamping plate 13, which effectively simulates the real use environment and squeezes the diaphragm piece 15 to be tested from both sides. The internal hydraulic oil filling is not easy to deform, and effectively feeds back suction to the diaphragm piece 15.

[0021] The top of the side clamping plate 13 is connected to the mud supply pipeline. When the two side clamping plates 13 squeeze the diaphragm 15, mud is input through the mud supply pipeline to simulate the real working environment.

[0022] There are multiple positioning mechanisms and rubber spring airbags 6, which are symmetrically arranged one by one on the surface of the frame 1, so that multiple diaphragms 15 can be tested at the same time.

[0023] The sliding sleeve 9 is arranged to be small at the top and large at the bottom, with the top fixedly connected to the surface of the rubber spring airbag 6 and the bottom sleeved on the surface of the rubber spring airbag 6. Through the arrangement of the sliding sleeve 9 and the fixed sleeve 8, the rubber spring airbag 6 is limited, and annular pressure is applied to it, reducing its radial variation, so that it contracts up and down and effectively inputs the internal gas into the diaphragm 15.

[0024] The upper pressing plate 5 is slidably arranged on the surface of the frame 1 to play a role in auxiliary positioning.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rubber diaphragm fatigue test device, comprising a frame (1), wherein a positioning mechanism for positioning a diaphragm (15) and an air supply mechanism for supplying air to the diaphragm (15) are respectively arranged on the surface of the frame (1), characterized in that: The positioning mechanism comprises a fixed block (10) and a placement seat (14) fixedly connected to the surface of the frame (1); both sides of the bottom of the fixed block (10) are slidably connected with side clamping plates (13) driven by a first hydraulic cylinder (12); the opposite sides of the fixed block (10) and the placement seat (14) are provided with positioning grooves for positioning the diaphragm (15); a connecting valve (11) connected to an air intake pipe of the diaphragm (15) is fixed on the surface of the fixed block (10); and a pressure sensor (16) is provided on the side of the side clamping plate (13); The air supply mechanism comprises a fixed plate (7) fixed on the surface of the frame (1), an air pump (2) and a second hydraulic cylinder (3); the bottom end of the piston rod of the second hydraulic cylinder (3) is fixedly connected to an upper pressure plate (5); the top of the fixed plate (7) is fixedly connected to a rubber spring airbag (6); the top of the rubber spring airbag (6) is fixedly connected to the bottom of the upper pressure plate (5); the top of the fixed plate (7) is fixedly connected to a fixed sleeve (8) sleeved on the outer periphery of the rubber spring airbag (6); the top of the rubber spring airbag (6) is fixedly connected to a sliding sleeve (9) slidably connected to the inner cavity of the fixed sleeve (8); the air outlet of the air pump (2) is connected to the top of the rubber spring airbag (6) through an air outlet pipe (4); and the bottom of the rubber spring airbag (6) is connected to a connecting valve (11) through an air supply pipe.

2. The rubber diaphragm fatigue testing device according to claim 1, characterized in that: A finished rubber diaphragm sheet filled with hydraulic oil after sealing treatment is fixedly connected inside the side clamping plate (13).

3. The rubber diaphragm fatigue testing device according to claim 1, characterized in that: The top of the side clamping plate (13) is communicated with the mud supply pipeline.

4. The rubber diaphragm fatigue testing device according to claim 1, characterized in that: A plurality of positioning mechanisms and rubber spring airbags (6) are provided and are symmetrically arranged one by one on the surface of the frame (1), so that a plurality of diaphragm sheets (15) can be tested simultaneously.

5. The rubber diaphragm fatigue testing device according to claim 1, characterized in that: The sliding sleeve (9) is arranged to be smaller at the top and larger at the bottom, with the top fixedly connected to the surface of the rubber spring airbag (6), and the bottom sleeved on the surface of the rubber spring airbag (6).

6. The rubber diaphragm fatigue testing device according to claim 1, characterized in that: The upper pressing plate (5) is slidably arranged on the surface of the frame (1).

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