Pneumatic gate valve

Abstract

The utility model relates to the technical field of gate valves, and particularly discloses a pneumatic gate valve which comprises a valve body, a gate, a blanking cone, a sealing device and an air cylinder, the gate is movably arranged on one side of the valve body in a penetrating mode, the air cylinder is fixedly installed on the valve body, and the telescopic end of the air cylinder is fixedly connected with the end edge, arranged on the outer side of the valve body, of the gate. A discharging cone is embedded in a feeding port of a valve body, a notch is formed in the end edge of the opposite side of the side, provided with an air cylinder, of the bottom of the cone, two rows of rollers are symmetrically installed on the two sides of the inner wall of the valve body, the rollers are arranged below an inserting plate, the rollers make rolling contact with the bottom face of the inserting plate, and the inserting plate makes movable contact with the rollers arranged in the valve body and the discharging cone. By means of the structure, the inserting plate is limited, the rolling wheel can guarantee that resistance is reduced when the inserting plate moves, meanwhile, the discharging cone is used for guiding materials to be concentrated towards the center of the valve body, the materials are prevented from entering the rolling wheel to cause clamping stagnation, the problem of abrasion between the inserting plate and the valve body is solved, and meanwhile the inserting plate operates smoothly without clamping stagnation.

Description

Technical fields:

[0001] This utility model relates to the field of slide gate valve technology, and in particular to a pneumatic slide gate valve. Background technology:

[0002] In cement production, the feeding of clinker or other powdery materials needs to be controlled during storage and transportation. The most commonly used feeding control device is the pneumatic slide gate valve. The slide gate valve consists of a valve body, a slide plate, and a cylinder. The cylinder drives the slide plate to move back and forth, and the slide plate achieves a seal by precisely fitting with the valve body.

[0003] Existing slide gate valves require grooves to be cut into the valve body, and sealing strips to be installed at the sealing position between the grooves and the slide gate. The slide gate and the valve body are prone to jamming, making it difficult for the valve to close tightly. Furthermore, after the slide gate or valve body wears down, the play increases, causing the slide gate to easily shift during insertion and removal, resulting in incomplete closure or material leakage. The entire valve body needs to be replaced, which is costly. Utility Model Content:

[0004] The purpose of this invention is to provide a pneumatic slide gate valve to solve the problems existing in the prior art.

[0005] This utility model is implemented by the following technical solution: A pneumatic slide gate valve includes a valve body, a slide gate, a discharge cone, a sealing device, and a cylinder. The slide gate is movably inserted through one side of the valve body. A sealing device is fixedly installed on the valve body at the position where the slide gate passes through the valve body. The sealing strip of the sealing device is in sealing contact with the slide gate. A cylinder is fixedly installed on the valve body. The telescopic end of the cylinder is fixedly connected to the end edge of the slide gate located on the outside of the valve body. A discharge cone is nested at the feed inlet of the valve body. The discharge cone includes a flange ring and a cone with an inwardly narrowed opening. The lower end edge of the cone slides in contact with the top surface of the slide gate. A notch is opened at the bottom of the cone, on the opposite end edge of the side where the cylinder is located. Two rows of rollers are symmetrically installed on both sides of the inner wall of the valve body. The rollers are located below the slide gate and roll in contact with the bottom surface of the slide gate.

[0006] Furthermore, the sealing device includes a sealing strip, a pressure strip, a guide groove, a clamping bolt, and a fixing frame. A plate groove is provided on the valve body at the position where the plate passes through. A fixing frame is fixedly provided at the position of the plate groove on the valve body. A guide groove is symmetrically provided on the upper and lower sides of the fixing frame and the plate groove. A pressure strip is slidably provided in the guide groove. A sealing strip is installed on the pressure strip. The two sealing strips are slidably sealed in contact with the upper and lower surfaces of the plate, respectively. A number of threaded holes are provided on the fixing frame. Through holes are provided at the positions of the threaded holes in the guide groove. The clamping bolt is threadedly connected to the fixing frame and passes through the through holes to contact the pressure strip.

[0007] Furthermore, a material storage chamber is formed by protruding outward from the inner wall of the valve body on the side opposite to the cylinder. The edge of the insert plate is in active contact with the inner wall of the material storage chamber. A portion of the inner wall of the material storage chamber located below the insert plate is inclined inward to form a slope.

[0008] The advantages of this utility model are as follows: the insert plate makes active contact with the rollers and the feeding cone installed in the valve body. The above structure limits the position of the insert plate. The rollers can ensure that the resistance is reduced when the insert plate moves. At the same time, the feeding cone is used to guide the material to concentrate towards the center of the valve body, avoiding the material from entering the roller and getting stuck. Furthermore, a notch is opened on the end edge of the feeding cone. During the insertion and closing process of the insert plate, the material will not get stuck between the insert plate and the feeding cone, causing the insert plate to get stuck. In order to prevent the material on the insert plate from getting stuck during the closing process, a storage cavity is also provided to accommodate a part of the material that is moved laterally by the insert plate when it is closed. This solves the problem of wear between the insert plate and the valve body. At the same time, the insert plate runs smoothly without getting stuck. Attached image description:

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a partial structural diagram of the sealing device.

[0011] In the diagram: 1. Valve body; 2. Insert plate; 3. Feed cone; 4. Sealing device; 5. Cylinder; 6. Roller; 101. Insert plate groove; 102. Material storage chamber; 103. Slope; 301. Flange ring; 302. Cone; 303. Notch; 401. Sealing strip; 402. Pressure strip; 403. Guide groove; 404. Clamping bolt; 405. Fixing frame; 406. Threaded hole. Detailed implementation method:

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0013] A pneumatic slide gate valve includes a valve body 1, a slide gate 2, a discharge cone 3, a sealing device 4, and a cylinder 5. The slide gate 2 is movably inserted through one side of the valve body 1. A sealing device 4 is fixedly installed on the valve body 1 at the position where the slide gate 2 passes through the valve body 1. The sealing strip 401 of the sealing device 4 makes sealing contact with the slide gate 2, preventing material from being carried out during the back-and-forth pulling of the slide gate 2, thus providing a sealing function. A cylinder 5 is fixedly installed on the valve body 1. The telescopic end of the cylinder 5 is fixedly connected to the end edge of the slide gate 2 located on the outside of the valve body 1. The extension and retraction of the cylinder 5 controls the movement of the slide gate 2, thereby achieving the function of closing or opening. A discharge cone 3 is nested at the inlet of the valve body 1. The discharge cone 3 includes a flange ring 301 and a cone 302 with an inwardly narrowed opening. The lower end of the cone 302 slides in contact with the top surface of the slide plate 2. A notch 303 is provided on the bottom of the cone 302, on the opposite side of the side where the cylinder 5 is located. Two rows of rollers 6 are symmetrically installed on both sides of the inner wall of the valve body 1. The rollers 6 are located below the slide plate 2 and roll in contact with the bottom surface of the slide plate 2. Compared with the sliding contact of the transmission, the rollers 6 have less wear. The discharge cone 3 is used to guide the material to fall in a direction that is concentrated towards the center position, so as to avoid the material entering the rollers 6 and causing the rollers 6 to get stuck.

[0014] The sealing device 4 includes a sealing strip 401, a pressure strip 402, a guide groove 403, a clamping bolt 404, and a fixing frame 405. A plate groove 101 is provided on the valve body 1 at the position where the plate 2 passes through. A fixing frame 405 is fixedly installed on the valve body 1 at the position of the plate groove 101. A guide groove 403 is symmetrically provided on the upper and lower sides of the fixing frame 405 and the plate groove 101. A pressure strip 402 slides within the guide groove 403. A sealing strip 401 is installed on the pressure strip 402. The two sealing strips 401 slide and seal against the upper and lower surfaces of the plate 2, respectively. Several threaded holes 4 are provided on the fixing frame 405. 06. A through hole is provided at the position of the guide groove 403 corresponding to the threaded hole 406. The clamping bolt 404 is threadedly connected to the fixing frame 405. The clamping bolt 404 passes through the through hole and contacts the pressure strip 402. The clamping force between the sealing strip 401 and the insert plate 2 can be adjusted by adjusting the clamping bolt 404. When the clamping force between the sealing strip 401 and the insert plate 2 is too large, the friction increases and the sealing strip 401 wears out too quickly, but the sealing effect is good. When the clamping force between the sealing strip 401 and the insert plate 2 is too small, it is easy to leak material. After replacing the sealing strip 401, the clamping bolt 404 needs to be adjusted according to the actual movement of the insert plate 2.

[0015] A material storage chamber 102 is formed by the outward protrusion of the inner wall of the valve body 1 on the side opposite to the cylinder 5. The edge of the insert plate 2 is in contact with the inner wall of the material storage chamber 102. The inner wall of the material storage chamber 102 located below the insert plate 2 is inclined inward to form a slope 103. When the insert plate 2 is closed, the material is stored on the insert plate 2. At the same time, the insert plate 2 is moving. In order to prevent the insert plate 2 from jamming with the discharge cone 3, a notch 303 is provided. The material is driven by the insert plate 2 to enter the material storage chamber 102 through the notch 303. A part of the powdery material will leak out at the notch 303, but will not continue to flow forward. At this time, less material leaks between the end edge of the insert plate 2 and the material storage chamber 102, which can further avoid the problem of material jamming between the insert plate 2 and the inner wall of the material storage chamber 102.

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A pneumatic slide gate valve, characterized in that, The valve body includes a valve body (1), a slide plate (2), a discharge cone (3), a sealing device (4), and a cylinder (5). The slide plate (2) is movably inserted through one side of the valve body (1). A sealing device (4) is fixedly installed on the valve body (1) at the position where the slide plate (2) passes through the valve body (1). The sealing strip (401) of the sealing device (4) is in sealing contact with the slide plate (2). A cylinder (5) is fixedly installed on the valve body (1). The telescopic end of the cylinder (5) is fixedly connected to the end edge of the slide plate (2) located outside the valve body (1). (1) A feeding cone (3) is nested at the feed inlet. The feeding cone (3) includes a flange ring (301) and a cone (302) with an inwardly narrowed opening. The lower end edge of the cone (302) slides in contact with the top surface of the insert plate (2). A notch (303) is opened on the opposite side of the bottom of the cone (302) on the side where the cylinder (5) is located. Two rows of rollers (6) are symmetrically installed on both sides of the inner wall of the valve body (1). The rollers (6) are located below the insert plate (2) and roll in contact with the bottom surface of the insert plate (2).

2. A pneumatic slide gate valve according to claim 1, characterized in that, The sealing device (4) includes a sealing strip (401), a pressure strip (402), a guide groove (403), a clamping bolt (404), and a fixing frame (405). A plate slot (101) is provided on the valve body (1) at the position where the plate (2) passes through. A fixing frame (405) is fixedly provided on the valve body (1) at the position of the plate slot (101). A guide groove (403) is symmetrically provided on the upper and lower sides of the fixing frame (405) and the plate slot (101). Within the guide groove (403)... A pressure strip (402) is provided for sliding, and a sealing strip (401) is installed on the pressure strip (402). The two sealing strips (401) slide and seal in contact with the upper and lower surfaces of the insert plate (2) respectively. Several threaded holes (406) are provided on the fixed frame (405). A through hole is provided in the guide groove (403) at the position corresponding to the threaded hole (406). The clamping bolt (404) is threadedly connected to the fixed frame (405). The clamping bolt (404) passes through the through hole and contacts the pressure strip (402).

3. A pneumatic slide gate valve according to claim 1, characterized in that, A material storage chamber (102) is formed by protruding outward from the inner wall of the valve body (1) on the side opposite to the cylinder (5). The edge of the insert plate (2) is in contact with the inner wall of the material storage chamber (102). A portion of the inner wall of the material storage chamber (102) below the insert plate (2) is inclined inward to form a slope (103).

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