Abrasion-resistant valve capable of preventing dust from being stuck

Abstract

The utility model discloses a wear-resisting valve capable of preventing dust from being stuck, which relates to the technical field of wear-resisting valves and comprises a three-way valve body, one side of the three-way valve body is connected with an outer feeding pipe, the left side and the right side of the three-way valve body are both connected with material conveying pipe fittings, a control mechanism is arranged right above the three-way valve body, and the control mechanism is connected with the three-way valve body. The control mechanism injects high-pressure gas into the three-way valve body so as to open and close an internal valve of the three-way valve body, an opening and closing mechanism is arranged in the three-way valve body, and the opening and closing mechanism controls the three-way valve body according to the amount of the high-pressure gas injected by the control mechanism. And then the dust materials are injected into the symmetrically-arranged material conveying pipe fittings through the outer feeding pipe. The utility model aims to solve the problems that no matter how much ash is in an ash conveying pipeline, the phenomena of jamming and hardening on a movable part of a valve cannot be caused, the operation safety of main equipment is improved, the overhaul workload is reduced, and the system maintenance workload is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of wear-resistant valves, and particularly relates to a wear-resistant valve for preventing ash jamming. Background Technique

[0002] The ash conveying wear-resistant valve is a valve used for switching and sealing on the ash conveying pipeline. This kind of valve should be wear-resistant, have flexible movement, and be in place when switched. Generally, the valve is pneumatically driven, and a cylinder is installed on the valve. Compressed air enters the cylinder to quickly switch, and the cylinder is provided with switch position signals for being in place when opened and closed. If the valve movement is not flexible, the system will alarm and the valve will be repaired.

[0003] The wear-resistant valve passes through powdery materials such as fly ash and limestone powder. Because the working conditions are harsh and complex, in addition to wear resistance, it also needs to have high movement reliability and flexibility. Due to the different characteristics of various materials, this kind of valve is very easy to cause internal caking, resulting in inflexible switching. Summary of the Invention

[0004] The purpose of the utility model is to provide a wear-resistant valve for preventing ash jamming to solve the above-mentioned defects in the prior art.

[0005] A wear-resistant valve for preventing ash jamming includes a three-way valve body. One side of the three-way valve body is connected with an external feed pipe. Both the left and right sides of the three-way valve body are connected with material conveying pipe fittings. A control mechanism is arranged directly above the three-way valve body. The control mechanism injects high-pressure gas into the interior of the three-way valve body to open and close the valve inside the three-way valve body. An opening and closing mechanism is arranged inside the three-way valve body. The opening and closing mechanism controls the opening gap at the connection between the external feed pipe and the three-way valve body according to the amount of high-pressure gas injected by the control mechanism, and then injects the dust material into the symmetrically arranged material conveying pipe fittings through the external feed pipe.

[0006] Preferably, the control mechanism includes an air delivery rigid pipe, a high-pressure air pump, an air pressure chamber and an exhaust pipe. The outer end of the air delivery rigid pipe penetrates and is connected with the three-way valve body. The bottom end of the air delivery rigid pipe is connected with the exhaust pipe. The bottom end of the exhaust pipe penetrates and is connected with the air pressure chamber. The air pressure chamber is arranged inside the three-way valve body. The output end of the high-pressure air pump is connected with the air delivery rigid pipe.

[0007] Preferably, the high-pressure air pump is connected with the top end of the exhaust pipe through the output end connected with the air delivery rigid pipe.

[0008] Preferably, the opening and closing mechanism includes a gate plate, a guide pipe, a piston member, a spring column, and a guide rod. The gate plate is installed on one side of the piston member. The piston members are symmetrically arranged inside the air pressure chamber. The two sides of the air pressure chamber are connected with guide pipes. The outside of the piston member is connected with a guide rod in a penetrating manner. The guide rods are symmetrically arranged inside the air pressure chamber. One side of two groups of spring columns is symmetrically arranged outside the two piston members, and the other side of the two groups of spring columns is connected inside the air pressure chamber.

[0009] Preferably, the gate plate is connected to one side of the piston member through a fastener connected in a ring-shaped penetrating manner.

[0010] Preferably, the air pressure chamber is connected to one end of the piston member through symmetrically arranged guide pipes.

[0011] Preferably, gaskets are symmetrically arranged inside the three-way valve body.

[0012] Compared with the prior art, the present utility model has the following advantages:

[0013] 1. What the present invention aims to solve is that no matter how much ash is in the ash conveying pipeline, it will not cause jamming and caking of the moving parts of the valve, improving the safety of the operation of the main equipment, reducing the maintenance workload, saving the system maintenance workload. The air pressure pushes the two pistons open, thus applying force to the gate plates on both sides, playing the same role as a spring. When the valve is closed, the positive cylinder loses pressure, the piston naturally loses pressure, and no longer applies pressure to the gate plate, making the valve easier to open.

[0014] 2. The present invention cancels the spring between the two gate plates and uses a piston method for control. The air source of the piston adopts the working air source in the cylinder. The piston member adopts a hollow piston member. When the cylinder is closed, the air source pressure enters the hollow piston member in the positive direction, enters the middle of the two pistons through a connecting tee, inflates the piston, and positions and guides the piston member through the guide rod, avoiding the offset of the piston member during the repeated opening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the whole of the present utility model.

[0016] Figure 2 It is a side view structural schematic diagram of the valve body in the present utility model.

[0017] Figure 3 It is a front view structural schematic diagram of the valve body in the present utility model.

[0018] Figure 4 It is a front sectional structural schematic diagram of the valve body in the present utility model.

[0019] Figure 5 In the present utility modelFigure 4 Schematic diagram of the enlarged structure at point a in the middle.

[0020] Wherein:

[0021] 1. Three-way valve body; 2. Outer feed pipe; 3. Material conveying pipe fitting; 4. Air supply rigid pipe; 5. High-pressure air pump; 6. Control mechanism; 7. Gate plate; 8. Fastener; 9. Opening and closing mechanism; 10. Guide pipe; 11. Air pressure chamber; 12. Piston part; 13. Gasket; 14. Exhaust pipe; 15. Spring column; 16. Guide rod. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As Figures 1 to 5 shown, a wear-resistant valve for preventing ash jamming includes a three-way valve body 1. An outer feed pipe 2 is connected to one side of the three-way valve body 1. Material conveying pipe fittings 3 are connected to both the left and right sides of the three-way valve body 1. A control mechanism 6 is arranged directly above the three-way valve body 1. The control mechanism 6 injects high-pressure gas into the interior of the three-way valve body 1 to open and close the valve inside the three-way valve body 1. An opening and closing mechanism 9 is arranged inside the three-way valve body 1. The opening and closing mechanism 9 controls the opening gap at the connection between the outer feed pipe 2 and the three-way valve body 1 according to the amount of high-pressure gas injected by the control mechanism 6, and then injects the dust material into the symmetrically arranged material conveying pipe fittings 3 through the outer feed pipe 2.

[0024] In this embodiment, the control mechanism 6 includes an air supply rigid pipe 4, a high-pressure air pump 5, an air pressure chamber 11 and an exhaust pipe 14. The outer end of the air supply rigid pipe 4 penetrates and is connected to the three-way valve body 1. The bottom end of the air supply rigid pipe 4 is connected to the exhaust pipe 14. The bottom end of the exhaust pipe 14 penetrates and is connected to the air pressure chamber 11. The air pressure chamber 11 is arranged inside the three-way valve body 1. The output end of the high-pressure air pump 5 is connected to the air supply rigid pipe 4.

[0025] In this embodiment, the high-pressure air pump 5 is connected to the top end of the exhaust pipe 14 through the output end connected to the air supply rigid pipe 4. The gas is injected through the high-pressure air pump 5 to push and seal the piston parts 12 arranged on both sides to one side.

[0026] In this embodiment, the opening and closing mechanism 9 includes a gate plate 7, a guide pipe 10, a piston member 12, a spring column 15, and a guide rod 16. The gate plate 7 is installed on one side of the piston member 12. The piston member 12 is symmetrically arranged inside the air pressure chamber 11. Both sides of the air pressure chamber 11 are connected with the guide pipe 10. The outer side of the piston member 12 is penetrated and connected with the guide rod 16. The guide rod 16 is symmetrically arranged inside the air pressure chamber 11. One side of two groups of spring columns 15 is symmetrically arranged outside the piston member 12, and the other side of the two groups of spring columns 15 is connected inside the air pressure chamber 11.

[0027] In this embodiment, the gate plate 7 is connected to one side of the piston member 12 through a fastener 8 with a circular penetration connection, and the fastener 8 arranged in a circular shape is used to position and lock one side of the gate plate 7 and the piston member 12.

[0028] In this embodiment, the air pressure chamber 11 is connected to one end of the piston member 12 through the symmetrically arranged guide pipe 10. The outer side of the piston member 12 is nested through the guide pipe 10 to conduct lateral guidance on the piston member 12.

[0029] In this embodiment, gaskets 13 are symmetrically arranged inside the three-way valve body 1, and the connection and sealing strength of the piston member 12 are increased through the gaskets 13.

[0030] When this wear-resistant valve that prevents ash jamming is actually applied, it includes the following working contents:

[0031] Step 1: The operator first connects the outer feed pipe 2 on one side of the three-way valve body 1 to the corresponding material pump, then docks two outer feed pipes 3 with the same diameter to both sides of the three-way valve body 1, and tightens the connection between the outer feed pipe 3 and the three-way valve body 1 through bolts. When the three-way valve body 1 is working, there will be pressure fluctuations. When conveying ash, due to the mixing of compressed air and ash, high pressure is formed. When the ash conveying ends, the pressure drops.

[0032] Step 2: When the three-way valve body 1 is closed, the positive side of the high-pressure air pump 5 is inflated, and the reverse side is exhausted. When the positive side of the high-pressure air pump 5 is inflated, high-pressure air enters the inside of the exhaust pipe 14 from the air inlet of the air delivery rigid pipe 4, so that the exhaust pipe 14 injects the high-pressure gas into the inside of the air pressure chamber 11. The high-pressure gas is applied to both sides of the left and right piston members 12. The tail end of the piston member 12 is guided through the guide rod 16. When the air between the two piston members 12 is compressed by the high-pressure air, it moves towards the two gate plates 7, and tightly fits the gate plates 7 with the gaskets 13 arranged inside the three-way valve body 1, playing the same role as a spring, and sealing one side of the two groups of feeding pipe fittings 3.

[0033] Step 3: When the three-way valve body 1 is to be opened, the forward pressure of the high-pressure air pump 5 is lost and exhausted, and the high-pressure air in the anti-pressure chamber 11 will flow out reversely along the exhaust pipe 14. The pressure in the hollow part between the internal piston parts 12 of the pressure chamber 11 is released, and the gate plates 7 on both sides are in a natural relaxed state, so that the gate plates 7 are separated from the gasket 13 arranged inside the three-way valve body 1. At the same time, the spring column 15 is used to push the gate plates 7 in the opposite direction, which is more conducive to opening the connection between the three-way valve body 1 and the feeding pipe fittings 3 arranged on both sides.

[0034] Therefore, the above-disclosed embodiments are illustrative in all respects and not exclusive. All changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.

Claims

1. A wear-resistant valve that prevents dust from getting stuck, characterized by: The invention comprises a three-way valve body (1), one side of the three-way valve body (1) is connected to an external feed pipe (2), the left and right sides of the three-way valve body (1) are connected to a material delivery pipe (3), a control mechanism (6) is arranged directly above the three-way valve body (1), the control mechanism (6) injects high-pressure gas into the interior of the three-way valve body (1), and then opens and closes the internal valve of the three-way valve body (1), an opening and closing mechanism (9) is arranged inside the three-way valve body (1), the opening and closing mechanism (9) controls the opening gap at the connection between the external feed pipe (2) and the three-way valve body (1) according to the amount of high-pressure gas injected by the control mechanism (6), and then injects the dust material into the interior of the symmetrically arranged material delivery pipe (3) through the external feed pipe (2).

2. The anti-dust-sticking wear-resistant valve according to claim 1, characterized in that: The control mechanism (6) comprises an air supply rigid tube (4), a high-pressure air pump (5), an air pressure chamber (11) and an exhaust pipe (14); the outer end of the air supply rigid tube (4) is connected to a three-way valve body (1); the bottom end of the air supply rigid tube (4) is connected to an exhaust pipe (14); the bottom end of the exhaust pipe (14) is connected to an air pressure chamber (11); the air pressure chamber (11) is arranged inside the three-way valve body (1); and the output end of the high-pressure air pump (5) is connected to the air supply rigid tube (4).

3. The anti-dust-stuck wear-resistant valve according to claim 2, characterized in that: The high-pressure air pump (5) is connected to the top end of the exhaust pipe (14) through an air supply hard pipe (4) connected to the output end.

4. The anti-dust sticking wear-resistant valve according to claim 1, characterized in that: The opening and closing mechanism (9) comprises a gate plate (7), a guide tube (10), a piston member (12), a spring column (15) and a guide rod (16); the gate plate (7) is installed on one side of the piston member (12); the piston member (12) is symmetrically arranged inside the air pressure chamber (11); the guide tube (10) is connected to both sides of the air pressure chamber (11); the outer side of the piston member (12) is connected through a guide rod (16); the guide rod (16) is symmetrically arranged inside the air pressure chamber (11); two groups of spring columns (15) are symmetrically arranged on one side of the outer side of the piston member (12); and the other side of the two groups of spring columns (15) is connected to the inside of the air pressure chamber (11).

5. The anti-dust-stuck wear-resistant valve according to claim 4, characterized in that: The gate plate (7) is connected to one side of the piston member (12) via an annular through-connecting fastener (8).

6. The anti-dust sticking wear-resistant valve according to claim 4, characterized in that: The air pressure chamber (11) is connected to one end of the piston member (12) via a symmetrically arranged guide tube (10).

7. The anti-dust sticking wear-resistant valve according to claim 1, characterized in that: Ring washers (13) are symmetrically arranged inside the three-way valve body (1).

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