Pressure reducing valve special for coal mine
By introducing a leakage sensor and a transparent protective cover into the coal mine-specific pressure reducing valve, the problems of leakage alarm and dust pollution have been solved, achieving timely alarm and protection effects, and improving the practicality and ease of maintenance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-03-27
AI Technical Summary
Existing coal mine-specific pressure reducing valves cannot promptly detect leaks during use and are easily contaminated by dust, affecting normal use and ease of maintenance.
A pressure reducing valve for coal mines was designed, featuring a leakage sensor, an alarm, and a transparent protective cover. The leakage sensor is connected to a PLC controller to enable automatic alarm, and a rotating motor drives the transparent protective cover to protect the valve body and prevent dust accumulation.
It enables timely alarms in case of leakage and dust protection, improves the practicality and ease of maintenance of the equipment, and ensures the normal operation of the equipment.
Smart Images
Figure CN224049790U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of special pressure reducing valve of coal mine, concretely to a special pressure reducing valve of coal mine. BACKGROUND
[0002] The special pressure reducing valve of coal mine is a kind of equipment specially designed for coal mine environment, mainly used to regulate and control the water pressure and gas pressure in the well, to ensure the safety of miners and the normal operation of production equipment.The special pressure reducing valve of coal mine is usually composed of main valve and pilot valve, and through the cooperation of precise internal structure, high-pressure fluid is reduced to a specific pressure value, so as to ensure the stable operation of the system.
[0003] The special pressure reducing valve of coal mine is mainly composed of valve seat, main valve disc, piston, spring, diaphragm, adjusting spring and other parts.The outlet pressure is set by adjusting spring pressure, the outlet pressure change is sensed by diaphragm, and the size of flow area of main valve throttling part is adjusted by driving piston through pilot valve opening and closing, to realize pressure reduction and pressure stabilization.
[0004] However, the existing special pressure reducing valve of coal mine cannot alarm in the first time when leakage occurs in the actual use process, thereby affecting the normal use of the special pressure reducing valve of coal mine, and the existing special pressure reducing valve of coal mine is mostly exposed to the outside air after installation, and a large amount of dust will accumulate on its surface after long-term exposure, which brings inconvenience to maintenance work.In view of this, the present application provides a special pressure reducing valve for coal mine. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of the prior art, the utility model provides a special pressure reducing valve for coal mine, which solves the problem of not being able to protect the special pressure reducing valve for coal mine in the background art.
[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a special pressure reducing valve for coal mine, comprising a special pressure reducing valve body for coal mine and a mounting disc fixedly installed on the outer surface of the special pressure reducing valve body for coal mine, a sealing packing is arranged in the interior of the special pressure reducing valve body for coal mine, a leakage sensor is arranged on the upper surface of the sealing packing of the inner wall of the special pressure reducing valve body for coal mine, an alarm and a PLC controller are arranged on the lower surface and the upper surface of the mounting disc respectively, a lead screw is rotatably connected to the upper surface of the mounting disc, a rotary motor for driving the rotation of the lead screw is arranged on the lower surface of the mounting disc, an internal thread cylinder is threadedly connected to the surface of the lead screw, and a transparent protective cover for protecting the special pressure reducing valve body for coal mine is fixedly installed on the side surface of the internal thread cylinder.
[0007] Preferably, the leakage sensor and the alarm are electrically connected with the PLC controller.
[0008] Preferably, a fixed rod is fixedly installed on the upper surface of the mounting disc, and a limiting disc is arranged at the top end of the fixed rod.
[0009] Preferably, the outer surface of the transparent protective cover is fixedly installed with a limiting sliding block, an upper surface of the limiting sliding block is provided with a sliding hole, and an inner wall of the sliding hole is in sliding connection with the surface of the fixed rod.
[0010] Preferably, the lower surface of the transparent protective cover is provided with a circular opening matched with the body of the special coal mine pressure reducing valve, so as to slide the body of the special coal mine pressure reducing valve up and down.
[0011] Preferably, the body of the special coal mine pressure reducing valve is provided with a connecting flange plate at both ends, and the front surface of the body of the special coal mine pressure reducing valve is provided with an electronic air pressure gauge.
[0012] Preferably, the bottom end of the transparent protective cover is fixedly provided with a sealing ring, and the lower surface of the sealing ring is in abutting and fixed connection with the upper surface of the mounting disc.
[0013] Beneficial effects
[0014] The utility model provides a special coal mine pressure reducing valve. Compared with prior art, the following beneficial effects are achieved:
[0015] The special coal mine pressure reducing valve is provided with a mounting disc, a lead screw, a rotary motor, an internal thread cylinder, a transparent protective cover, a fixed rod and a limiting sliding block, so that the body of the special coal mine pressure reducing valve can be effectively protected under the action of the transparent protective cover after installation, the accumulation of dust and other sundries is avoided, the situation that the valve is collided by external objects during use is effectively avoided, when maintenance is needed, the rotary motor is driven to rotate the lead screw, the rotation of the lead screw drives the internal thread cylinder to move upwards, so that the transparent protective cover is moved upwards, and the body of the special coal mine pressure reducing valve is exposed, thereby providing great convenience for maintenance personnel; the special coal mine pressure reducing valve is provided with a leakage sensor, an alarm and a PLC controller, so that when leakage occurs at the sealing filler, the leakage sensor transmits a signal to the PLC controller, the PLC controller automatically controls the alarm to alarm, thereby providing timely and effective reminders for relevant personnel, the special coal mine pressure reducing valve is maintained at the first time, and the practicability of the special coal mine pressure reducing valve is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0017] Figure 2 It is a sectional structure schematic view of the utility model;
[0018] Figure 3 It is a three-dimensional structure schematic view of the utility model; Figure 2 It is an enlarged structure schematic view of A in the utility model;
[0019] Figure 4 It is the three-dimensional structure schematic view of the mounting disc of the utility model.
[0020] In the figure: 1, coal mine special pressure reducing valve body; 2, mounting disc; 3, sealing packing; 4, leakage sensor; 5, alarm; 6, PLC controller; 7, screw rod; 8, rotary motor; 9, internal thread cylinder; 10, transparent protective cover; 11, fixed rod; 12, limit slide. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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 those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] Please refer to Figure 1 - Figure 4 The utility model provides a technical scheme: a coal mine special pressure reducing valve, comprising:
[0023] The coal mine special pressure reducing valve body 1 and the mounting disc 2 fixedly installed on the outer surface of the coal mine special pressure reducing valve body 1 are provided.
[0024] The coal mine special pressure reducing valve body 1 is internally provided with the sealing packing 3, and the inner wall of the coal mine special pressure reducing valve body 1 is provided with the leakage sensor 4 on the upper surface of the sealing packing 3, the lower surface and the upper surface of the mounting disc 2 are respectively provided with the alarm 5 and the PLC controller 6, the upper surface of the mounting disc 2 is rotatably connected with the screw rod 7, and the lower surface of the mounting disc 2 is provided with the rotary motor 8 for driving the screw rod 7 to rotate, the surface of the screw rod 7 is threadedly connected with the internal thread cylinder 9, and the side surface of the internal thread cylinder 9 is fixedly installed with the transparent protective cover 10 for protecting the coal mine special pressure reducing valve body 1.
[0025] Please refer to Figure 2 、 Figure 3 The leakage sensor 4 and the alarm 5 are electrically connected with the PLC controller 6.
[0026] Specifically, by electrically connecting the leakage sensor 4 and the alarm 5 with the PLC controller 6, the purpose of automatic alarm when leaking can be realized.
[0027] In this invention, by setting up a leakage sensor 4, an alarm 5, and a PLC controller 6, when a leak occurs at the sealing packing 3 during actual use of the coal mine-specific pressure reducing valve, the leakage sensor 4 transmits a signal to the PLC controller 6, and the PLC controller 6 automatically controls the alarm 5 to sound an alarm, providing timely and effective reminders to relevant personnel. This facilitates the immediate maintenance of the coal mine-specific pressure reducing valve and improves its practicality.
[0028] See Figure 1 , Figure 2 A fixing rod 11 is fixedly installed on the upper surface of the mounting plate 2, and a limit plate is provided at the top of the fixing rod 11.
[0029] See Figure 2 , Figure 4 A limiting slider 12 is fixedly installed on the outer surface of the transparent protective cover 10. A sliding hole is provided on the upper surface of the limiting slider 12, and the inner wall of the sliding hole is slidably connected to the surface of the fixed rod 11.
[0030] Specifically, by setting the fixed rod 11 and the limiting slider 12, the stability of the transparent protective cover 10 when sliding up and down can be effectively guaranteed.
[0031] See Figure 2 The lower surface of the transparent protective cover 10 has a circular opening that matches the body 1 of the coal mine-specific pressure reducing valve, allowing the body 1 of the coal mine-specific pressure reducing valve to slide up and down.
[0032] Specifically, by setting up a transparent protective cover 10, effective protection can be achieved for the body 1 of the coal mine-specific pressure reducing valve.
[0033] See Figure 1 Both ends of the coal mine-specific pressure reducing valve body 1 are equipped with connecting flanges, and an electronic pressure gauge is installed on the front of the coal mine-specific pressure reducing valve body 1.
[0034] Specifically, by setting a connecting flange, it is easy to install the coal mine-specific pressure reducing valve body 1, and at the same time, the setting of an electronic pressure gauge facilitates pressure monitoring.
[0035] See Figure 2 A sealing ring is fixed at the bottom of the transparent protective cover 10, and the lower surface of the sealing ring is pressed against the upper surface of the mounting plate 2.
[0036] Specifically, by setting a sealing ring, the gap between the bottom of the transparent protective cover 10 and the mounting plate 2 can be effectively sealed.
[0037] Wherein, the coal mine special pressure reducing valve is effectively protected by the transparent protective cover 10 after installation, and the accumulation of dust and other sundries is avoided, and the collision of the coal mine special pressure reducing valve by external objects during use is effectively avoided.
[0038] Working principle: when the sealing filler 3 leaks during actual use of the coal mine special pressure reducing valve, the leakage sensor 4 transmits a signal to the PLC controller 6, and the PLC controller 6 automatically controls the alarm 5 to alarm, providing timely and effective reminders for relevant personnel, facilitating personnel to maintain the coal mine special pressure reducing valve at the first time, improving the practicability of the coal mine special pressure reducing valve, and the coal mine special pressure reducing valve can be effectively protected by the transparent protective cover 10 after installation, avoiding the accumulation of dust and other sundries, and effectively avoiding the collision of the coal mine special pressure reducing valve by external objects during use, and when it needs to be maintained, the rotation of the rotary motor 8 drives the screw rod 7 to rotate, the rotation of the screw rod 7 drives the inner threaded cylinder 9 to move upwards, thereby driving the transparent protective cover 10 to move upwards, exposing the coal mine special pressure reducing valve body 1, providing great convenience for maintenance personnel.
[0039] Meanwhile, the contents not described in detail in the specification are all prior art known by those skilled in the art.
Claims
1. A pressure reducing valve for coal mines, characterized by, Include: The coal mine special pressure reducing valve body (1) and the mounting disc (2) fixedly installed on the outer surface of the coal mine special pressure reducing valve body (1); The coal mine special pressure reducing valve body (1) is provided with a sealing packing (3) in the inside, and the inner wall of the coal mine special pressure reducing valve body (1) is provided with a leakage sensor (4) on the upper surface of the sealing packing (3), the lower surface and the upper surface of the mounting disc (2) are respectively provided with an alarm (5) and a PLC controller (6), the upper surface of the mounting disc (2) is rotatably connected with a lead screw (7), and the lower surface of the mounting disc (2) is provided with a rotary motor (8) for driving the lead screw (7) to rotate, the surface of the lead screw (7) is threadedly connected with an internally threaded cylinder (9), and the side surface of the internally threaded cylinder (9) is fixedly installed with a transparent protective cover (10) for protecting the coal mine special pressure reducing valve body (1).
2. The pressure reducing valve for coal mine as claimed in claim 1, wherein: The leakage sensor (4) and the alarm (5) are electrically connected with the PLC controller (6).
3. The pressure reducing valve for coal mine as claimed in claim 1, wherein: The upper surface of the mounting disc (2) is fixedly installed with a fixed rod (11), and the top end of the fixed rod (11) is provided with a limiting disc.
4. The special pressure reducing valve for coal mine according to claim 3, characterized in that: The outer surface of the transparent protective cover (10) is fixedly installed with a limiting sliding block (12), the upper surface of the limiting sliding block (12) is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected with the surface of the fixed rod (11).
5. The pressure reducing valve for coal mine according to claim 1, characterized in that: The lower surface of the transparent protective cover (10) is provided with a circular opening matched with the coal mine special pressure reducing valve body (1), so as to slide the coal mine special pressure reducing valve body (1) up and down.
6. The pressure reducing valve for coal mine according to claim 1, characterized in that: Both ends of the coal mine special pressure reducing valve body (1) are provided with a connecting flange plate, and the front surface of the coal mine special pressure reducing valve body (1) is provided with an electronic barometer.
7. The pressure reducing valve for coal mine according to claim 1, characterized in that: The bottom end of the transparent protective cover (10) is fixedly provided with a sealing ring, and the lower surface of the sealing ring is tightly fixed with the upper surface of the mounting disc (2).