Waterproof and explosion-proof mechanical emergency stop switch pilot control device and hydraulic system thereof

Abstract

The application relates to a pilot control device of a waterproof and explosion-proof mechanical emergency parking switch, which comprises an explosion-proof box, a waterproof box arranged in the explosion-proof box, a control valve group and an accumulator assembly arranged outside the explosion-proof box, an oil distribution block assembly, a rubber bag and an electric control cabinet arranged in the waterproof box, the accumulator assembly, the control valve group, the oil distribution block assembly and the rubber bag being sequentially connected in series through pipelines, an emergency parking switch being arranged on the electric control cabinet, and the rubber bag being in abutment with the emergency parking switch. The pilot control device of the waterproof and explosion-proof mechanical emergency parking switch can realize the purpose that the emergency parking switch inside the explosion-proof box and the waterproof box can be pressed without opening the explosion-proof box and the waterproof box, and the waterproof and explosion-proof requirements of the machine in a high-risk environment are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a waterproof and explosion-proof mechanical emergency stop switch pilot control device and its hydraulic system, belonging to the technical field of mechanical hydraulic control. BACKGROUND

[0002] For the mechanical with waterproof and explosion-proof requirements, its electric control cabinet often needs to be placed inside the explosion-proof box and waterproof box. If an emergency occurs, emergency stop must be performed, the explosion-proof box and waterproof box need to be opened, and the emergency stop switch needs to be pressed, which leads to the exposure of the important electric control cabinet, and the failure of waterproof function and explosion-proof function. Therefore, a control device capable of realizing emergency stop without opening the waterproof box and explosion-proof box is needed to ensure the waterproof and explosion-proof requirements of the mechanical. SUMMARY

[0003] The present application solves the technical problem of the prior art, provides a waterproof and explosion-proof mechanical emergency stop switch pilot control device and its hydraulic system, which can realize the technical requirement of pressing the emergency stop switch without opening the waterproof box and explosion-proof box, and ensures the waterproof and explosion-proof requirements of the mechanical.

[0004] The technical scheme adopted by the present application to solve the above problems is as follows: a waterproof and explosion-proof mechanical emergency stop switch pilot control device, which comprises an explosion-proof box, a waterproof box arranged in the explosion-proof box, a control valve group and an accumulator assembly arranged outside the explosion-proof box, a split oil block assembly, a bladder and an electric control cabinet arranged in the waterproof box, the accumulator assembly, the control valve group, the split oil block assembly and the bladder being connected in series through pipelines, an emergency stop switch arranged on the electric control cabinet, and the position of the bladder corresponding to the position of the emergency stop switch.

[0005] Optionally, the bladder is arranged in the waterproof box through a bladder clamp.

[0006] Optionally, the number of the control valve group, the accumulator assembly, the split oil block assembly and the bladder is multiple and one-to-one corresponding.

[0007] Optionally, the multiple control valve groups and accumulator assemblies are installed at multiple different positions outside the waterproof and explosion-proof mechanical.

[0008] Optionally, the side of the explosion-proof box and the waterproof box is provided with an opening hole, the diameter of the opening hole is the same as the diameter of the split oil block assembly, and the split oil block assembly is welded at the opening hole position.

[0009] Optionally, the split oil block assembly comprises a split oil block, and split oil block connectors are arranged on the left and right sides of the split oil block.

[0010] Optionally, the control valve group comprises a control valve block, a two-position three-way directional valve and a valve block joint are arranged on the control valve block, and the two-position three-way directional valve is installed outwardly and perpendicularly to the waterproof and explosion-proof mechanical surface.

[0011] A hydraulic system of a waterproof and explosion-proof mechanical emergency stop switch pilot control device comprises an oil tank, a constant pump, a liquid filling valve, an accumulator, a two-position three-way directional valve and a skin bag, the oil tank is connected with the constant pump through a first pipeline, the constant pump is connected with the liquid filling valve through a second pipeline, the liquid filling valve is connected with the accumulator through a third pipeline, the third pipeline is connected with the two-position three-way directional valve through a fourth pipeline, and the two-position three-way directional valve is connected with the skin bag through a fifth pipeline.

[0012] Optionally, the second pipeline is connected with the oil tank through an oil return pipeline, and an overflow valve is arranged on the oil return pipeline.

[0013] Optionally, the hydraulic system further comprises a brake valve, an emergency stop switch and a control box, the liquid filling valve is connected with the brake valve through a sixth pipeline, a brake is arranged on the brake valve, the skin bag is abutted against the emergency stop switch, and the brake valve and the emergency stop switch are connected with the control box.

[0014] Compared with the prior art, the waterproof and explosion-proof mechanical emergency stop switch pilot control device and the hydraulic system thereof have the following advantages:

[0015] The waterproof and explosion-proof mechanical emergency stop switch pilot control device and the hydraulic system thereof can press the emergency stop switch inside the explosion-proof box and the waterproof box without opening the explosion-proof box and the waterproof box, and the waterproof and explosion-proof requirements of the mechanical device in a high-risk environment are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a general structural diagram of a waterproof and explosion-proof mechanical emergency stop switch pilot control device.

[0017] Figure 2 FIG. 4 is a top view of the waterproof and explosion-proof mechanical emergency stop switch pilot control device. Figure 1

[0018] Figure 3 FIG. 6 is an internal structural arrangement diagram of the explosion-proof box and the waterproof box in the waterproof and explosion-proof mechanical emergency stop switch pilot control device. Figure 1

[0019] Figure 4 FIG. 8 is a structural diagram of an oil distribution block assembly in the waterproof and explosion-proof mechanical emergency stop switch pilot control device. Figure 3

[0020] Figure 5 FIG. 10 is a structural diagram of a control valve group (pilot control switch) in the waterproof and explosion-proof mechanical emergency stop switch pilot control device. Figure 1

[0021] ​​​​Figure 6 For Figure 1 Structure diagram of accumulator assembly.

[0022] Figure 7 The hydraulic system principle diagram of the waterproof and explosion-proof mechanical emergency stop switch pilot control device of the application.

[0023] Wherein:

[0024] 1, oil tank, 2, motor, 3, quantitative pump, 4, overflow valve, 5, filling valve, 6, brake valve, 7, brake, 8, emergency stop switch, 9, bladder, 10, two-position three-way reversing valve, 11, accumulator, 12, control box, 13, control valve group (pilot control switch), 14, accumulator assembly, 15, explosion-proof box, 16, waterproof box, 17, oil distribution block assembly, 18, bladder clamp, 19, bladder, 20, electric control cabinet, 21, emergency stop switch, 22, oil distribution block, 23, oil distribution block joint, 24, control valve block, 25, valve block joint, 26, accumulator tray, 27, accumulator joint, 28, accumulator support, 29, first pipeline, 30, second pipeline, 31, third pipeline, 32, fourth pipeline, 33, fifth pipeline, 34, oil return pipeline, 35, sixth pipeline. DETAILED DESCRIPTION

[0025] The application will be further described in detail below with reference to the drawings.

[0026] Participate Figures 1 to 6 The application relates to a waterproof and explosion-proof mechanical emergency stop switch pilot control device, which comprises an explosion-proof box 15, wherein the explosion-proof box 15 is internally provided with a waterproof box 16, the explosion-proof box 15 is externally provided with a control valve group 13 and an accumulator assembly 14, the waterproof box 16 is internally provided with an oil distribution block assembly 17, a bladder 19 and an electric control cabinet 20, the accumulator assembly 14, the control valve group 13, the oil distribution block assembly 17 and the bladder 19 are sequentially connected in series through pipelines, the electric control cabinet 20 is provided with an emergency stop switch 21, the position of the bladder 19 corresponds to the position of the emergency stop switch 21, when the bladder 19 expands, the emergency stop switch 21 is pushed, and emergency stop is realized.

[0027] The bladder 19 is arranged in the waterproof box 16 through a bladder clamp 18.

[0028] The number of the control valve group 13, the accumulator assembly 14, the oil distribution block assembly 17 and the bladder 19 is multiple and one-to-one correspondence.

[0029] The plurality of control valve groups 13 and accumulator assemblies 14 are installed at different positions outside the waterproof and explosion-proof machine, and the operator presses the control valve group (pilot control switch) at any position to push the emergency stop switch through the skin bag expansion, so that the operator can quickly respond at any position to ensure timely parking in emergency situations.

[0030] The number of control valve groups 13 and accumulator assemblies 14 is four, and the four control valve groups 13 and accumulator assemblies 14 are arranged at the four corner positions of the waterproof and explosion-proof machine.

[0031] The side of the explosion-proof box 15 and the waterproof box 16 is provided with an opening, the diameter of the opening is the same as the diameter of the oil distribution block assembly 17, and the oil distribution block assembly 17 is welded at the opening position.

[0032] The oil distribution block assembly 17 comprises an oil distribution block 22, and the oil distribution block 22 is provided with an oil distribution block connector 23 on the left and right sides.

[0033] The control valve group 13 comprises a control valve block 24, and the control valve block 24 is provided with a two-position three-way reversing valve 10 and a valve block connector 25.

[0034] The two-position three-way reversing valve 10 is installed vertically outward on the surface of the waterproof and explosion-proof machine.

[0035] The model of the two-position three-way reversing valve 10 is MP08-30K.

[0036] The valve block connector 25 has a plurality of valve block connectors.

[0037] The accumulator assembly 14 comprises an accumulator tray 26, the accumulator tray 26 is provided with an accumulator 11, the accumulator 11 is provided with an accumulator support 28, and the bottom of the accumulator 11 is provided with an accumulator connector 27.

[0038] The accumulator tray 26 and the accumulator support 28 are fixedly connected with the waterproof and explosion-proof machine.

[0039] Referring to Figure 7 The hydraulic system of the waterproof and explosion-proof machine emergency stop switch pilot control device comprises an oil tank 1, a constant pump 3, a liquid filling valve 5, an accumulator 11, a two-position three-way reversing valve 10 and a skin bag 9, the oil tank 1 and the constant pump 3 are connected through a first pipeline 29, the constant pump 3 and the liquid filling valve 5 are connected through a second pipeline 30, the liquid filling valve 5 and the accumulator 11 are connected through a third pipeline 31, the third pipeline 31 and the two-position three-way reversing valve 10 are connected through a fourth pipeline 32, and the two-position three-way reversing valve 10 and the skin bag 9 are connected through a fifth pipeline 33.

[0040] The quantitative pump 3 is driven by the motor 2.

[0041] The second pipeline 30 is connected with the oil tank 1 through an oil return pipeline 34, and an overflow valve 4 is arranged on the oil return pipeline 34;

[0042] The hydraulic system further comprises a brake valve 6, the filling valve 5 is connected with the brake valve 6 through a sixth pipeline 35, and the brake valve 6 is connected with a brake 7;

[0043] The hydraulic system further comprises an emergency stop switch 8, and the bladder 9 is in abutment with the emergency stop switch 8;

[0044] The hydraulic system further comprises a control box 12, and the brake valve 6 and the emergency stop switch 8 are connected with the control box 12;

[0045] The accumulators 11, the two-position three-way directional valves 10 and the bladders 9 are multiple and one-to-one corresponding.

[0046] Working principle:

[0047] Under normal working conditions, the two-position three-way directional valve 10 is in a closed state, and the hydraulic oil enters the accumulator 11 through the filling valve 5; when emergency stop is needed, the button of any two-position three-way directional valve 10 is pressed, the valve core moves to the right, the accumulator 11 is connected with the bladder 9, the high-pressure oil enters the bladder 9, the bladder 9 expands to push the emergency stop switch 8, and the emergency stop is realized.

[0048] In addition to the above-mentioned embodiments, the present application also includes other embodiments, and any technical solution formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present application.

Claims

1. A pilot control device for a watertight and explosion-proof mechanical emergency stop switch, characterized by: It includes an explosion-proof box (15), inside which is a waterproof box (16), and outside the explosion-proof box (15) are a control valve group (13) and an accumulator assembly (14). Inside the waterproof box (16) are an oil distribution block assembly (17), a bladder, and an electrical control cabinet (20). The accumulator assembly (14), control valve group (13), oil distribution block assembly (17), and bladder are connected in series via pipelines. An emergency stop switch is provided on the electrical control cabinet (20), and the position of the bladder corresponds to the position of the emergency stop switch. The bladder is secured inside the waterproof box (16) by a bladder clamp (18); The explosion-proof box (15) and the waterproof box (16) have side openings, the diameter of which is the same as the diameter of the oil distribution block assembly (17), and the oil distribution block assembly (17) is welded to the opening position. The oil distribution block assembly (17) includes an oil distribution block (22), and oil distribution block connectors (23) are provided on both the left and right sides of the oil distribution block (22). The control valve group (13) includes a control valve block (24), on which a two-position three-way directional valve (10) and a valve block connector (25) are provided. The two-position three-way directional valve (10) is installed outward perpendicular to the surface of the waterproof and explosion-proof machinery.

2. A waterproof and explosion-proof mechanical emergency stop switch pilot control device according to claim 1, characterized in that: The number of each of the control valve group (13), accumulator assembly (14), oil distribution block assembly (17) and bladder is multiple and corresponds one-to-one.

3. The waterproof and explosion-proof mechanical emergency stop switch pilot control device according to claim 2, characterized in that: Multiple control valve assemblies (13) and accumulator assemblies (14) are installed in multiple different locations on the exterior of the waterproof and explosion-proof machinery.

4. A hydraulic system for a pilot control device of a waterproof and explosion-proof mechanical emergency stop switch as described in any one of claims 1-3, characterized in that: It includes an oil tank (1), a metering pump (3), a filling valve (5), an accumulator (11), a two-position three-way directional valve (10), and a bladder. The oil tank (1) is connected to the metering pump (3) via a first pipeline (29). The metering pump (3) is connected to the filling valve (5) via a second pipeline (30). The filling valve (5) is connected to the accumulator (11) via a third pipeline (31). The third pipeline (31) is connected to the two-position three-way directional valve (10) via a fourth pipeline (32). The two-position three-way directional valve (10) is connected to the bladder via a fifth pipeline (33).

5. The hydraulic system of the pilot control device for a waterproof and explosion-proof mechanical emergency stop switch according to claim 4, characterized in that: The second pipeline (30) is connected to the oil tank (1) through the return oil pipeline (34), and the return oil pipeline (34) is equipped with an overflow valve (4).

6. The hydraulic system of the pilot control device for a waterproof and explosion-proof mechanical emergency stop switch according to claim 4, characterized in that: The hydraulic system also includes a brake valve (6), an emergency stop switch and a control box (12). The filling valve (5) and the brake valve (6) are connected through a sixth pipeline (35). A brake (7) is connected to the brake valve (6). The bladder abuts against the emergency stop switch. The hydraulic system also includes a control box (12). The brake valve (6) and the emergency stop switch are both connected to the control box (12).

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