Anti-jamming closed slide valve capable of being opened and closed with materials

Abstract

The anti-jamming closed sliding valve comprises a valve shell, a hydraulic cylinder and a valve plate, an opening is formed in the side face of the valve shell, the edge of the opening protrudes outwards to form a butt joint opening, the butt joint opening is fixedly connected with an outlet of a stock bin, the movable valve plate is arranged in the valve shell, matched rails are arranged on the two sides of the valve plate, and the hydraulic cylinder is arranged on the hydraulic cylinder. One end of the valve plate is hinged to a piston rod of a hydraulic cylinder which is installed on the outer side of the valve shell. The hydraulic cylinder stretches out and retracts back to drive the valve plate to move downwards and upwards on the rail, and therefore the discharging opening in the bottom of the stock bin is closed and opened. The angle a is formed between the whole sliding valve and the horizontal plane, the angle is larger than the repose angle of materials, it is guaranteed that materials cannot be accumulated on the valve plate, the idler wheels and the rail, materials cannot be accumulated in an inner cavity of the valve after the valve is closed, and blocking during opening and closing of the valve is avoided to the maximum extent.

Description

Technical Field

[0001] The invention discloses an anti-jamming closed slide valve capable of opening and closing with materials, belonging to the technical field of unloading slide valves of solid material bins. Background Art

[0002] In the field of industrial production, the bottom unloading equipment of the silo storing solid materials often needs to be opened and closed with materials to meet the requirements of the production process. When opening and closing with materials, solid materials are easy to enter the movement gap of the unloading equipment, causing obstruction, and with the unloading of materials, there is often dust, and even toxic and harmful gases overflow, causing safety problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an anti-jamming closed slide valve that can be opened and closed with materials. The slide valve adopts a closed structure, which not only ensures reliable opening and closing actions, but also prevents dust or toxic and harmful gases from overflowing.

[0004] To achieve the above object, the present invention is achieved through the following technical solutions:

[0005] An anti-jamming closed sliding valve capable of being switched with materials, comprising a valve housing, a hydraulic cylinder and a valve plate. An opening is arranged on the side of the valve housing, and the edge of the opening protrudes outward to form a docking port, which is connected and fixed to the outlet of the silo. A movable valve plate is arranged in the valve housing, and matching tracks are arranged on both sides of the valve plate. One end of the valve plate is hinged to the piston rod of the hydraulic cylinder, and the hydraulic cylinder is installed on the outside of the valve housing.

[0006] The slide valve as a whole forms an angle a with the horizontal, which is greater than the angle of repose of the material;

[0007] The extension and retraction of the hydraulic cylinder drive the valve plate to move downward and upward on the track, thereby closing and opening the discharge port at the bottom of the silo.

[0008] Furthermore, the sliding direction of the valve plate in the valve housing forms an angle a with the horizontal, which is greater than the repose angle of the material. The valve housing has a higher end and a lower end, and the lower end of the valve housing forms a material outlet.

[0009] Furthermore, the length and width of the discharge port of the silo are smaller than the valve plate size, and the rollers and tracks are arranged appropriately away from the discharge port.

[0010] Furthermore, when the valve is opened, the valve plate moves upward along a and deviates from the silo discharge port, and the inner cavity of the valve shell corresponding to the silo discharge port forms a buffer zone, and the height of the valve shell buffer zone is greater than the height of the inner cavity of the valve shell corresponding to the valve plate when the valve is opened.

[0011] Furthermore, rollers are provided on both sides of the bottom surface of the valve plate, and the contact surfaces of the rollers and the tracks are matched in an inverted V structure.

[0012] Furthermore, matching limit blocks are provided on the upper surfaces of both sides of the valve plate and the inner wall of the upper valve housing to limit the swing amplitude of the valve plate when it moves.

[0013] Furthermore, the limit blocks on the upper surfaces of both sides of the valve plate are within a safe distance from the inner surface of the upper valve housing, which can limit the displacement of the valve plate perpendicular to the plate surface when it moves, effectively preventing the valve plate from derailing or tipping over when it moves.

[0014] Furthermore, two purge gas interfaces are provided at the front end of the valve housing for introducing purge gas or high-temperature gas.

[0015] Furthermore, a baffle plate is provided at the lower end of the valve plate, the side of which is close to the valve housing, and the bottom of which is close to the upper surface of the track, in order to retain a small gap between the valve housing and the upper surface of the track.

[0016] Furthermore, the bottom and side walls of the valve housing and the area on the upper surface of the valve plate that contacts the material are all provided with wear-resistant linings.

[0017] The present invention discloses an anti-stuck closed sliding valve capable of opening and closing with materials. The sliding valve as a whole forms an angle a with the horizontal, and the angle is larger than the repose angle of the material, thereby ensuring that materials will not accumulate on the valve plate, rollers and tracks. After the valve is closed, materials will not accumulate in the inner cavity of the valve, thereby avoiding jamming of the valve when opening and closing to the greatest extent. The present invention is applied to the unloading of solid material bins, has a simple and reliable structure and is widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the slide valve of the present invention in the "closed" state;

[0019] Figure 2 This is a front view of the slide valve of the present invention in the "open" state;

[0020] Figure 3 This is the "A" view of the slide valve of the present invention;

[0021] Figure 4 It is an enlarged cross-sectional view of the slide valve "BB" of the present invention;

[0022] Figure 5 This is the “C direction” view of the valve;

[0023] Part numbers in the figure: 1-silo, 2-valve housing, 3-hydraulic cylinder, 4-valve plate, 5-roller, 6-track, 7-limit block, 8-blocking plate, 9-lining plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Example: See Figures 1 to 5, an anti-jamming closed slide valve that can be opened and closed with materials, comprising a valve housing 2, a hydraulic cylinder 3 and a valve plate 4. An opening is provided on the side of the valve housing 2, and the edge of the opening protrudes outward to form a docking port, which is fixedly connected to the outlet of the silo 1. A movable valve plate 4 is provided in the valve housing 2, and matching tracks 6 are provided on both sides of the valve plate 4. One end of the valve plate 4 is hinged to the piston rod of the hydraulic cylinder 3, and the hydraulic cylinder 3 is installed on the outside of the valve housing 2; the slide valve as a whole forms an angle a with the horizontal, and the angle is greater than the repose angle of the material; the extension and retraction of the hydraulic cylinder 3 drive the valve plate 4 to move downward and upward on the track, thereby realizing the closing and opening of the discharge port 11 at the bottom of the silo.

[0026] In one embodiment of the present invention, please refer to Figure 1 , Figure 2 , the sliding direction of the valve plate 4 in the valve housing forms an angle a with the horizontal, which is greater than the repose angle of the material. The valve housing 2 has a higher end and a lower end, and the lower end of the valve housing forms a material outlet. The sliding valve or valve opening valve plate of the present invention moves upward along the inclination angle a to deviate from the silo discharge port, and the inner cavity of the valve housing corresponding to the silo discharge port forms a buffer zone. The height of the valve housing buffer zone is greater than the height of the inner cavity of the valve housing corresponding to the valve plate when the valve is opened, so as to increase the cross-sectional area of ​​the material channel. Rollers 5 are arranged on both sides of the bottom surface of the valve plate 4, and the rollers 5 are arranged in a row. The contact surface between the rollers 5 and the track 6 is an inverted V structure. Matching limit blocks 7 are arranged on the upper surfaces of both sides of the valve plate 4 and the inner wall of the upper valve housing to limit the swing amplitude of the valve plate 4 when it moves. The limit blocks 7 on the upper surfaces of both sides of the valve plate 4 and the inner surface of the upper valve housing are within a safe distance M, which can limit the displacement of the valve plate perpendicular to the plate surface when it moves, and effectively avoid derailment or tipping of the valve plate when it moves. A baffle plate 8 is disposed at the lower end of the valve plate 4, the side of which is close to the valve housing, and the bottom of which is close to the upper surface of the track, in order to retain a small gap between the valve housing and the upper surface of the track.

[0027] The structure of the present invention is described as follows:

[0028] The whole set of sliding valves is installed at the bottom of the silo 1 through a flange, the hydraulic cylinder 3 is installed on the valve housing 2, and the end of the hydraulic cylinder piston rod is hinged to one end of the valve plate 4. Two rows of rollers 5 are arranged on both sides of the valve plate, and the two rows of rollers fit on the tracks 6 on both sides respectively. The extension and retraction of the hydraulic cylinder drives the valve plate to move downward and upward on the track, thereby realizing the closing and opening of the discharge port or the feed port at the bottom of the silo. In the present invention, the valve as a whole forms an angle "a" with the horizontal, and this angle is greater than the repose angle of the material, so as to ensure that no material will accumulate on the valve plate, rollers, and tracks. After the valve is closed, no material will accumulate in the inner cavity of the valve, so as to avoid jamming of the valve when opening and closing to the greatest extent. The feed port 11 of the silo is smaller than the size of the valve plate, and the rollers 5 and tracks 6 are arranged appropriately away from the discharge port or the feed port, such as Figure 3As shown, the influence of material flow on rollers and tracks when the valve is opened and closed can be reduced, and the blocking can be minimized. The contact surface between roller 5 and track 6 is in an "inverted V" shape, see Figure 4 , through the cooperation of the "inverted V" shaped surface, the possible swing of the valve plate when it moves up and down can be effectively limited, ensuring that the valve plate 4 moves in a straight line along the track. In addition, the upper surface of the track is in an "inverted V" shape, which can prevent the accumulation of materials on the surface of the track and effectively avoid jamming. The bottom and side walls of the valve housing 2, the upper part of the valve plate 4 and other areas that may come into contact with the material are all provided with wear-resistant linings 9. Two pairs of limit blocks are provided on the upper surfaces of both sides of the valve plate 4 and the inner wall of the upper housing, see Figure 4 , further limiting the possible left and right swing of the valve plate when it moves up and down; and the upper surface limit blocks on both sides of the valve plate are only a small distance away from the inner surface of the upper shell, which can limit the displacement of the valve plate perpendicular to the plate surface when it moves, effectively avoiding the "derailment" or tipping of the valve plate when it moves, and the valve plate runs more smoothly. Two purge gas interfaces 21 and 22 are provided at one end or the higher end of the valve shell 2, such as Figure 5 As shown, purge gas can be introduced to regularly purge the valve plate, roller, track and other parts. If the material contains a large amount of water, high-temperature gas can also be introduced, which has the following three effects:

[0029] 1) Dry and clean the internal cavity of the valve, especially the valve plate, roller, track and other parts;

[0030] 2) By maintaining a certain temperature in the cavity, condensation in the cavity can be prevented and dust adhesion can be reduced;

[0031] 3) In winter or other working conditions with low ambient temperature, high temperature gas drying and heating can prevent ice and freezing inside the equipment.

[0032] The present invention provides a material baffle plate 8 at the front end of the valve plate. Under the premise of ensuring the flexible up and down movement of the valve plate, only a small gap is left between the side of the material baffle plate 8 and the valve housing, bottom and upper surface of the track. The sliding valve of the present invention is completely closed, with only a feed port connected to the silo and a discharge port connected to the next process, which can avoid dust or possible toxic and harmful gas spillage, ensuring environmental protection and safety.

[0033] The hydraulic cylinder 3 of the present invention drives the valve plate 4 to roll on the track 6 through the roller 5 to realize the opening and closing action. During the action, it is only necessary to overcome the friction between the roller and the track and the friction between the valve plate and the material, and it is not necessary to overcome the gravity of the material in the silo, so the action load is small; at the same time, when the valve is closed, the gravity of the material in the entire silo is transmitted to the roller and the track by the valve plate, and there is no need for the hydraulic cylinder of the valve's own driving mechanism to provide additional power. Even if the power oil of the hydraulic cylinder is interrupted, the valve will not open, which is both energy-saving and safe and reliable.

[0034] The above records are only embodiments of the present invention. Any modification or change made by a person familiar with the present technology using the present invention shall fall within the patent scope claimed by the present invention and shall not be limited to those disclosed in the embodiments.

Claims

1. An anti-jamming closed slide valve capable of opening and closing with material, characterized in that: It includes a valve housing, a hydraulic cylinder and a valve plate. An opening is provided on the side of the valve housing, and the edge of the opening protrudes outward to form a docking port, which is connected and fixed to the outlet of the silo. A movable valve plate is provided in the valve housing, and matching tracks are provided on both sides of the valve plate. One end of the valve plate is hinged to the piston rod of the hydraulic cylinder, and the hydraulic cylinder is installed on the outside of the valve housing. The slide valve as a whole forms an angle a with the horizontal, which is greater than the angle of repose of the material; The extension and retraction of the hydraulic cylinder drive the valve plate to move downward and upward on the track, thereby closing and opening the discharge port at the bottom of the silo.

2. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1, characterized in that: The sliding direction of the valve plate in the valve housing forms an angle a with the horizontal, which is greater than the repose angle of the material. The valve housing has a higher end and a lower end, and the lower end of the valve housing forms a material outlet.

3. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1, characterized in that: The length and width of the silo discharge port are smaller than the valve plate size, and the rollers and tracks are arranged appropriately away from the discharge port.

4. An anti-jamming closed slide valve capable of opening and closing with material according to any one of claims 1 to 3, characterized in that: When the valve is opened, the valve plate moves upward along a and deviates from the silo discharge port, and the inner cavity of the valve body corresponding to the silo discharge port forms a buffer zone, and the height of the valve body buffer zone is greater than the inner cavity height of the valve body corresponding to the valve plate when the valve is opened.

5. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1, characterized in that: Rollers are arranged on both sides of the bottom surface of the valve plate, and the contact surface between the rollers and the track is matched with an inverted V structure.

6. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1 or 5, characterized in that: Matching limit blocks are provided on the upper surfaces of both sides of the valve plate and the inner wall of the upper valve housing to limit the swing amplitude of the valve plate when it moves.

7. The anti-jamming closed slide valve capable of opening and closing with material according to claim 6, characterized in that: The limit blocks on the upper surfaces of both sides of the valve plate are within a safe distance from the inner surface of the upper valve housing. The safe distance can limit the displacement of the valve plate perpendicular to the plate surface when it moves, effectively preventing the valve plate from derailing or tipping over when it moves.

8. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1, characterized in that: The front end of the valve housing is provided with two purge gas interfaces for introducing purge gas or high-temperature gas.

9. An anti-jamming closed slide valve capable of opening and closing with material according to claim 1 or 2 or 3 or 5 or 7 or 8, characterized in that: A baffle plate is arranged at the lower end of the valve plate, the side of which is close to the valve housing, and the bottom of which is close to the upper surface of the track, so as to keep a small gap between the valve housing and the upper surface of the track.

10. The anti-jamming closed slide valve capable of opening and closing with material according to claim 1, 2 or 3, characterized in that: The bottom and side walls of the valve housing and the upper surface of the valve plate in contact with the material are all provided with wear-resistant linings.

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