Pneumatic plug valve

Abstract

The utility model discloses pneumatic plug-in valve, including valve body, vertical setting on the upper portion of valve body and with the through connection of valve body's pneumatic cylinder barrel and vertical plug -in in the inside of valve body and in the inside of valve body and move up and down's valve plate, the inside of pneumatic cylinder barrel is provided with the lift mechanism that can move up and down in its inside, and lift mechanism and valve plate between drive connection of same direction are connected, and the forward side of valve body is provided with the flange that is connected with it through, the outside one side of pneumatic cylinder barrel is provided with the first gas port and the second gas port respectively for gas to enter its inside, and the first gas port is located at the bottom end at the outside one side of pneumatic cylinder barrel, and the second gas port is located at the top end at the outside one side of pneumatic cylinder barrel, and the gas port of first gas port and second gas port all is provided with the filter screen that filters gas.

Description

Technical Field

[0001] This utility model relates to the field of slide gate valves, and in particular to pneumatic slide gate valves. Background Technology

[0002] Most existing slide gate valves are manual, where turning a handwheel causes a screw to repeatedly move the valve plate horizontally, thus opening and closing the valve. The disadvantages are that they require manual operation, have low automation, and the valve plate's stroke can only be adjusted by turning the screw, which is time-consuming. Therefore, a pneumatic slide gate valve is proposed. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] In this embodiment of the utility model, the pneumatic slide gate valve includes a valve body, a cylinder vertically disposed above the outside of the valve body and communicating with the valve body, and a valve plate vertically inserted into the valve body and moving up and down inside the valve body. The cylinder is provided with a lifting mechanism that can move up and down inside it, and the lifting mechanism is driven in the same direction as the valve plate. The valve body has a flange communicating with the front side. The cylinder is provided with a first air port and a second air port on the outside side for gas to enter it. The first air port is located at the bottom end of the cylinder outside side, and the second air port is located at the top end of the cylinder outside side. Filter screens for filtering the gas are provided at both the first and second air ports.

[0005] Preferably, the lifting mechanism includes a piston arranged laterally inside the cylinder, and a piston rod that moves synchronously with the piston and is connected synchronously with the valve plate at the bottom of the piston. The piston rod passes through the cylinder and moves between the cylinder and the valve body. A guide ring that moves synchronously with the piston and contacts the cylinder is fitted on the outside of the piston.

[0006] Preferably, a bellows is sleeved on the outside of the piston rod, and the bellows is vertically located inside the valve body, with the upper and lower ends of the bellows connected to the valve body and the valve plate, respectively.

[0007] Preferably, a cylinder seat is provided between the cylinder barrel and the valve body, and the cylinder seat is laterally located above the valve body, while the cylinder barrel is vertically located above the cylinder seat. The cylinder barrel and the valve body are respectively connected to the cylinder seat, and a second sensor is provided on one side of the cylinder seat to sense the contact of the lifting mechanism at the bottom of the cylinder barrel.

[0008] Preferably, a cylinder head is horizontally arranged above the outside of the cylinder barrel to seal its interior, and a first sensor is provided on one side of the cylinder head to sense contact with the lifting mechanism at the top of the cylinder barrel.

[0009] Compared with the prior art, the beneficial effects of this utility model are: when the lifting mechanism is located at the bottom of the cylinder, external gas can be continuously introduced into the bottom of the cylinder through the first air port, and the lifting mechanism is pushed upward. During the upward pushing process, the lifting mechanism also drives the valve plate to move upward inside the valve body until the lifting mechanism contacts the top of the cylinder, at which point the external gas stops being input. At this time, the valve plate is located at the top of the valve body, and the valve body is in a through state.

[0010] When the lifting mechanism is located at the top of the cylinder, external gas can be continuously introduced into the top of the cylinder through the second air port, which will push the lifting mechanism downward. During the downward pushing process, the lifting mechanism will also drive the valve plate to move downward inside the valve body until the lifting mechanism contacts the bottom of the cylinder. At this time, the external gas will stop being input. The valve plate is located at the bottom of the valve body and the valve body is in a closed state.

[0011] Furthermore, when external gas enters the cylinder through the first or second air port via a filter screen, it can effectively filter out foreign objects in the gas, preventing foreign objects from accumulating inside the cylinder and affecting the movement stability of the lifting mechanism.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a pneumatic slide gate valve;

[0015] Figure 2 This is another structural schematic diagram of a pneumatic slide gate valve;

[0016] Figure 3 This is another structural schematic diagram of a pneumatic slide gate valve.

[0017] The following components are shown in the figure: 1. Flange, 2. Valve plate, 3. Piston rod, 4. Valve body, 5. Bellows, 6. Valve cover, 7. Cylinder seat, 8. First air port, 9. Piston, 10. Guide ring, 11. Cylinder barrel, 12. Filter screen, 13. Second air port, 14. Cylinder head, 15. First sensor, 16. Second sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 In this embodiment of the utility model, the pneumatic slide gate valve includes a valve body 4, a cylinder 11 vertically disposed above the outside of the valve body 4 and communicating with the valve body 4, and a valve plate 2 vertically inserted into the valve body 4 and moving up and down inside the valve body 4. The cylinder 11 is provided with a lifting mechanism that can move up and down inside it, and the lifting mechanism is driven in the same direction with the valve plate 2. The valve body 4 is provided with a flange 1 communicating with it on the front side. The cylinder 11 is provided with a first air port 8 and a second air port 13 for gas to enter it on the outside side. The first air port 8 is located at the bottom end of the outside side of the cylinder 11, and the second air port 13 is located at the top end of the outside side of the cylinder 11. Filter screens 12 for filtering gas are provided at the air ports of the first air port 8 and the second air port 13.

[0020] Furthermore, when the lifting mechanism is located at the bottom of the cylinder 11, external gas can continuously enter the bottom of the cylinder 11 through the first air port 8, pushing the lifting mechanism upward. During the upward pushing process, the lifting mechanism also drives the valve plate 2 to move upward inside the valve body 4 until the lifting mechanism contacts the top of the cylinder 11, at which point the external gas stops being input. At this time, the valve plate 2 is located at the top of the valve body 4, and the valve body 4 is in a through state.

[0021] When the lifting mechanism is located at the top of the cylinder 11, external gas can be continuously introduced into the top of the cylinder 11 through the second air port 13, and the lifting mechanism is pushed down. During the downward pushing process, the lifting mechanism also drives the valve plate 2 to move down inside the valve body 4 until the lifting mechanism contacts the bottom of the cylinder 11, at which point the external gas stops being input. At this time, the valve plate 2 is located at the bottom of the valve body 4, and the valve body 4 is in a closed state.

[0022] Furthermore, when external gas enters the cylinder barrel 11 through the first air port 8 or the second air port 13 via the filter screen 12, it can effectively filter foreign objects in the gas, preventing foreign objects from accumulating inside the cylinder barrel 11 and affecting the movement stability of the lifting mechanism.

[0023] The lifting mechanism includes a piston 9 horizontally disposed inside the cylinder 11, and a piston rod 3 vertically disposed at the bottom end of the piston 9, which moves synchronously with the piston 9 and is synchronously connected to the valve plate 2. The piston rod 3 passes through the cylinder 11 and moves between the cylinder 11 and the valve body 4. A guide ring 10 is fitted on the outside of the piston 9, which moves synchronously with the piston 9 and contacts the cylinder 11.

[0024] Furthermore, when the piston 9 is located at the bottom of the cylinder barrel 11, external gas can continuously enter the bottom of the cylinder barrel 11 through the first air port 8, pushing the piston 9 upward. During the upward pushing process, the piston 9 also drives the valve plate 2 to move upward inside the valve body 4 through the piston rod 3 until the piston 9 contacts the top of the cylinder barrel 11, at which point the external gas stops being input. At this time, the valve plate 2 is located at the top of the valve body 4, and the valve body 4 is in a through state.

[0025] When the piston 9 is located at the top of the cylinder barrel 11, external gas can be continuously introduced into the top of the piston 9 through the second air port 13, pushing the piston 9 downward. During the downward pushing process, the piston 9 also drives the valve plate 2 to move downward inside the valve body 4 through the piston rod 3 until the piston 9 contacts the bottom of the cylinder barrel 11, at which point the external gas input stops. At this time, the valve plate 2 is located at the bottom of the valve body 4, and the valve body 4 is in a closed state.

[0026] And when the piston 9 moves up and down inside the cylinder 11, it contacts the inner wall of the cylinder 11 through the guide ring 10, making the piston 9 more stable when it moves up and down.

[0027] The piston rod 3 is fitted with a bellows 5, which is vertically located inside the valve body 4, and the upper and lower parts of the bellows 5 are connected to the valve body 4 and the valve plate 2, respectively.

[0028] A cylinder seat 7 is provided between the cylinder barrel 11 and the valve body 4, and the cylinder seat 7 is horizontally located above the valve body 4, while the cylinder barrel 11 is vertically located above the cylinder seat 7. The cylinder barrel 11 and the valve body 4 are respectively connected to the cylinder seat 7. A second sensor 16 is provided on one side of the cylinder seat 7 to sense the contact of the lifting mechanism at the bottom of the cylinder barrel 11. The second sensor 16 can sense the contact when the lifting mechanism descends to the bottom of the cylinder barrel 11, thereby driving the external air supply device to supply air to the bottom of the cylinder barrel 11 through the first air port 8, so as to push the lifting mechanism to move to the top of the cylinder barrel 11.

[0029] A cylinder head 14 is horizontally arranged above the outside of the cylinder barrel 11 to seal its interior. A first sensor 15 is provided on one side of the cylinder head 14 to sense the contact of the lifting mechanism at the top of the cylinder barrel 11. The first sensor 15 can sense the contact when the lifting mechanism is raised to the top of the cylinder barrel 11, thereby driving the external air supply device to supply air to the top of the cylinder barrel 11 through the second air port 13, so as to push the lifting mechanism to move to the bottom of the cylinder barrel 11.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A pneumatic slide gate valve, characterized in that, The device includes a valve body, a cylinder vertically disposed above the valve body and connected through the valve body, and a valve plate vertically inserted into the valve body and moving up and down within the valve body. The cylinder is equipped with a lifting mechanism that can move up and down within it, and the lifting mechanism is driven in the same direction as the valve plate. The valve body has a flange connected through it on its front side. The cylinder has a first air port and a second air port on its outer side, respectively, for gas to enter the cylinder. The first air port is located at the bottom end of the outer side of the cylinder, and the second air port is located at the top end of the outer side of the cylinder. Both the first and second air ports are equipped with filter screens for filtering the gas.

2. The pneumatic plug valve according to claim 1, characterized in that The lifting mechanism includes a piston arranged horizontally inside the cylinder, and a piston rod that moves synchronously with the piston and is connected synchronously with the valve plate at the bottom of the piston. The piston rod passes through the cylinder and moves between the cylinder and the valve body. A guide ring that moves synchronously with the piston and contacts the cylinder is fitted outside the piston.

3. The pneumatic plug valve according to claim 2, characterized in that The piston rod is fitted with a bellows, which is vertically located inside the valve body, and the upper and lower parts of the bellows are connected to the valve body and the valve plate, respectively.

4. The pneumatic plug valve of claim 1, wherein, A cylinder seat is provided between the cylinder barrel and the valve body, with the cylinder seat located horizontally above the valve body and the cylinder barrel located vertically above the cylinder seat. The cylinder barrel and the valve body are respectively connected to the cylinder seat, and a second sensor is provided on one side of the cylinder seat to sense the contact of the lifting mechanism at the bottom of the cylinder barrel.

5. The pneumatic plug valve of claim 1, wherein, A cylinder head is horizontally arranged above the outside of the cylinder barrel to seal its interior, and a first sensor is provided on one side of the cylinder head to sense the contact of the lifting mechanism at the top of the cylinder barrel.

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