Air bag type linkage gate valve

Abstract

The utility model relates to the technical field of valve structures, in particular to an air bag type linkage gate valve. Comprising a valve body and a valve plate. Valve plates are symmetrically and slidably connected to two sides of the valve body; an air bag is connected to the outer wall of the valve plate and located on the contact face of the valve body and the valve plate. An air cavity is formed in the valve plate; the air bag is connected with a pressure release valve and an electromagnetic valve; the air cavity is connected with a micro air pump; the micro air pump is connected with the electromagnetic valve through an inflation pipe, and the pressure release valve is connected with the air cavity through an exhaust pipe; a pressure sensor is arranged in the valve body; the pressure sensor is respectively connected with the pressure release valve, the electromagnetic valve and the micro air pump through a controller; according to the utility model, the air tightness between the valve plate and the valve body is improved, and the problem that the sealing performance of the valve plate is reduced due to the influence of environment and pulverized coal in the working process of the coal valve in the decomposing furnace is solved.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, specifically to a pneumatic linkage slide gate valve. Background Technology

[0002] Slide gate valves have advantages such as simple structure, low manufacturing cost, and ease of use, and are widely used in industrial enterprises and other industries. Currently, they are generally controlled manually, pneumatically, or electrically. In dry-process cement production, pulverized coal needs to be fed into the decomposition furnace for combustion. The decomposition furnace uses ultrafine pulverized coal, which is stored in a coal hopper under high negative pressure. The ultrafine pulverized coal in the hopper needs to be fed into the furnace body through a coal valve, usually a slide gate valve. During use, it has been found that ultrafine pulverized coal easily enters between the valve plate and the valve body of the slide gate valve, jamming the valve plate and preventing the coal valve from opening or closing.

[0003] The presence of adhesive materials in the gate valve area, as well as wear on the gate valve plate or seals, ultimately leads to poor sealing performance of the gate valve, resulting in air and material leaks. This necessitates cleaning through openings near the conveying channel, which is labor-intensive and detrimental to continuous production. Furthermore, if the air and material leaks are caused by wear on the valve plate itself, repair or replacement is time-consuming and labor-intensive. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and proposes a pneumatic linkage slide gate valve; it solves the problem of reduced valve plate sealing performance caused by environmental and coal dust effects during the operation of the coal valve in the decomposition furnace.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A pneumatic slide gate valve includes a valve body and a valve plate; the valve plate is symmetrically slidably connected to both sides of the valve body; an air bladder is connected to the outer wall of the valve plate, and the air bladder is located on the contact surface between the valve body and the valve plate; an air chamber is provided inside the valve plate; a pressure relief valve and a solenoid valve are connected to the air bladder; a miniature air pump is connected to the air chamber; the miniature air pump is connected to the solenoid valve through an inflation pipe, and the pressure relief valve is connected to the air chamber through an exhaust pipe; a pressure sensor is provided inside the valve body; the pressure sensor is connected to the pressure relief valve, the solenoid valve, and the miniature air pump respectively through a controller.

[0007] Furthermore, a sealing ring is provided on the contact surface between the valve body and the valve plate.

[0008] Furthermore, the airbag has a ring-shaped structure;

[0009] Furthermore, the inner wall of the airbag is connected to the outer wall of the valve plate.

[0010] Further, a valve seat is arranged at the inner cavity of the valve body at the contact surface between the valve body and the valve plate.

[0011] Further, a flow sensor is arranged in the valve body; the flow sensor is connected with the pressure relief valve, the electromagnetic valve and the micro air pump through the controller.

[0012] Further, the air bag is made of rubber.

[0013] Further, a pressure regulating valve is connected to the inflation pipe.

[0014] The beneficial effects of the utility model relative to the prior art are:

[0015] The utility model discloses a gas cavity is arranged in the valve plate, and an air bag, a pressure sensor and a flow sensor are arranged between the valve plate and the valve body, the air tightness between the valve plate and the valve body is monitored through the pressure sensor and the flow sensor simultaneously, and the utility model discloses a pressure regulating valve and an electromagnetic valve are arranged on the air bag, the real-time monitoring and feedback are formed through the linkage of the pressure sensor, the flow sensor and the electromagnetic valve, when the air tightness drops, the air bag can be inflated quickly through the control of the electromagnetic valve opening, the gap between the valve plate and the valve body is sealed and filled, coal powder and the like are prevented from permeating between the valve plate and the valve body effectively, when the valve needs to be opened, the air bag contracts through the control of the pressure relief valve, and the valve is opened through the control of the insertion plate valve moving up and down after the gas pressure drops. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the air bag type linkage insertion plate valve of the utility model;

[0017] Figure 2 It is Figure 1 The enlarged view of A in Fig.

[0018] Reference signs:

[0019] 1, valve body, 2, valve plate, 3, air bag, 4, gas cavity, 5, pressure relief valve, 6, electromagnetic valve, 7, micro air pump, 8, pressure sensor, 9, sealing ring, 10, flow sensor. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model is further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model. The technical scheme of the utility model is described in detail below in combination with embodiments and drawings, but the protection scope is not limited by this.

[0021] Referring to Figure 1 and Figure 2 , the embodiment proposes an air bag type linkage plug-in valve, comprising a valve body 1 and a valve plate 2; the valve body 1 is symmetrically connected with the valve plate 2 at both sides; a valve seat is arranged at the inner cavity of the valve body 1 at the contact surface of the valve body 1 and the valve plate 2. The normal movement of the valve plate 2 is ensured by the valve seat to realize the opening and closing of the plug-in valve; the valve body and the valve plate and the connecting structure thereof in the embodiment are all prior art.

[0022] An air bag 3 is connected to the outer wall of the valve plate 2, the air bag 3 is of annular structure; and the air bag 3 is of rubber material. The inner wall of the air bag 3 is connected with the outer wall of the valve plate 2; and the air bag 3 is located on the contact surface of the valve body 1 and the valve plate 2, the air bag 3 is arranged to be inflated to fill the gap between the valve body 1 and the valve plate 2; and the sealing performance between the valve body 1 and the valve plate 2 is improved.

[0023] An air cavity 4 is arranged in the valve plate 2; a pressure relief valve 5 and a solenoid valve 6 are connected to the air bag 3; a micro air pump 7 is connected to the air cavity 4; the micro air pump 7 and the solenoid valve 6 are connected through an inflation pipe, and a pressure regulating valve is connected to the inflation pipe. The pressure relief valve 5 is connected with the air cavity 4 through an exhaust pipe; a pressure sensor 8 and a flow sensor 10 are arranged in the valve body 1; the pressure sensor 8 and the flow sensor 10 are connected with the pressure relief valve 5, the solenoid valve 6 and the micro air pump 7 through a controller. The air tightness between the valve plate 2 and the valve body 1 is monitored by the pressure sensor 8 and the flow sensor 10 at the same time; and the linkage of the pressure sensor 8 and the flow sensor 10 with the solenoid valve 6 and the micro air pump 7 forms real-time monitoring and feedback, when the air tightness decreases, the air bag 3 can be inflated quickly by controlling the solenoid valve 6 and the micro air pump 7 to open, and then the gap between the valve plate 2 and the valve body 1 is sealed and filled by the air bag 3, which effectively prevents the penetration of coal dust and the like between the valve plate 2 and the valve body 1; and the gas pressure in the air bag 3 can be adjusted by the pressure regulating valve. When the valve needs to be opened, the pressure relief valve 5 can be controlled to release pressure, so that the air bag 3 shrinks, and after the gas pressure decreases, the plug-in valve is controlled to move up and down to open the valve.

[0024] In order to further prolong the service life of the plug-in valve, a sealing ring 9 is arranged on the contact surface of the valve body 1 and the valve plate 2; the sealing performance of the gap is further improved.

[0025] The gas cavity 4 is arranged in the valve plate 2, the air bag 3 and the gas cavity 4 move together with the valve plate 2, the working of the valve plate 2 is not influenced, meanwhile, the quick filling and discharging of gas can be realized, the air tightness between the valve plate 2 and the valve body 1 is improved, and the problem that the sealing performance of the valve plate is reduced due to the influence of environment and coal powder in the working process of the coal valve in the decomposing furnace is solved.

[0026] The above is the further detailed description of the utility model made in combination with the specific preferred embodiments, and the specific embodiments of the utility model cannot be limited to this, for the ordinary skilled in the art to which the utility model belongs, under the premise of not departing from the utility model, a number of simple deductions or substitutions can also be made, and all should be regarded as belonging to the utility model, and the patent protection range is determined by the submitted claims.

Claims

1. An air bag linkage gate valve, comprising a valve body (1) and a valve plate (2); the valve body (1) is symmetrically connected with the valve plate (2) on both sides; characterized in that, A gas bag (3) is connected to the outer wall of the valve plate (2), and the gas bag (3) is located on the contact surface of the valve body (1) and the valve plate (2); the inside of the valve plate (2) is provided with a gas cavity (4); the gas bag (3) is connected with a pressure relief valve (5) and a solenoid valve (6); the gas cavity (4) is connected with a micro air pump (7); the micro air pump (7) is connected with the solenoid valve (6) through an inflation pipe, and the pressure relief valve (5) is connected with the gas cavity (4) through an exhaust pipe; a pressure sensor (8) is arranged in the valve body (1); the pressure sensor (8) is connected with the pressure relief valve (5), the solenoid valve (6) and the micro air pump (7) through a controller respectively.

2. The balloon linkage plug valve of claim 1, wherein, A sealing ring (9) is arranged on the contact surface of the valve body (1) and the valve plate (2).

3. The balloon linkage plug valve of claim 1, wherein, The gas bag (3) is of an annular structure.

4. The balloon linkage plug valve of claim 3, wherein, The inner wall of the gas bag (3) is connected with the outer wall of the valve plate (2).

5. The balloon linkage plug valve as defined in claim 1, wherein A valve seat is arranged at the inner cavity of the valve body (1) at the contact surface of the valve body (1) and the valve plate (2).

6. The balloon linkage plug valve as claimed in claim 1, wherein A flow sensor (10) is further arranged in the valve body (1); the flow sensor (10) is connected with the pressure relief valve (5), the solenoid valve (6) and the micro air pump (7) through a controller respectively.

7. The balloon linkage plug valve as claimed in claim 1, wherein The gas bag (3) is made of rubber.

8. The balloon linkage plug valve of claim 1, wherein, A pressure regulating valve is connected to the inflation pipe.

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