Pneumatic plunger valve of vibrating screen

Abstract

The pneumatic plunger valve of the vibrating screen comprises a valve body and an air cylinder, a first flange is arranged at the top of the valve body and connected with the air cylinder through a second flange, the top of the second flange is connected with the bottom of the air cylinder, a valve rod is arranged in the center of the bottom of the air cylinder, and a first suction plate is arranged at the bottom of the valve body. A round hole is formed in the center of the first suction plate in a penetrating mode, a piston rod is arranged in the round hole, a through hole is formed in the center of the top of the piston rod, a telescopic rod is arranged in the through hole, the top of the telescopic rod is connected with the valve rod, the top of the surface of the telescopic rod is fixedly sleeved with a sliding plate, and the diameter of the sliding plate is matched with the diameter of the piston rod. The bottom of the sliding plate is located on the top of the piston rod. According to the plunger valve, a specially-customized plunger valve required by the screen mesh of the sterile vibrating screen is provided, the speed of the plunger valve can be controlled by adjusting the control valve on the plunger valve, and the plunger valve is independently designed through decomposition and is easy to replace no matter which part is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic plunger valves, in particular to a vibrating screen pneumatic plunger valve. Background Art

[0002] The vibrating screen pneumatic plunger valve is a technology commonly used in the current biopharmaceutical field. This technology is a valve specially customized for the liquid outlet of the sterile vibrating screen equipment. This valve can adjust the gas volume to make its speed adjustable when switching, and has a stable sealing effect and is easy to install, which greatly saves the problems of inconvenient and unstable installation. It adopts a cylinder push structure, which can ensure that the required materials play an important role in the liquid outlet of the vibrating screen when used with the vibrating screen, and it is used in conjunction with the structure of the screen. It is also the most critical step in the late synthesis production in the pharmaceutical field.

[0003] The vibrating screen pneumatic plunger valve of the prior art has the following disadvantages:

[0004] 1. The plunger valve cannot be installed on the screen, and the existing plunger valves are all integrated.

[0005] 2. The plunger valve cannot be decomposed individually to form an independent and special valve.

[0006] 3. Existing plunger valves are all standard and cannot be changed according to process requirements. Utility Model Content

[0007] The utility model aims to provide a pneumatic plunger valve for a vibrating screen to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A pneumatic plunger valve for a vibrating screen comprises a valve body and a cylinder. The valve body is a sleeve-shaped valve body with a through top and a through bottom. A first flange is provided on the top of the valve body, and the first flange is connected to the cylinder through a second flange. The top of the second flange is connected to the bottom of the cylinder. A valve stem is provided at the bottom center of the cylinder. A first suction plate is provided at the bottom of the valve body, and a circular hole is provided at the center of the first suction plate. A piston rod is provided inside the circular hole. The top of the piston rod is located inside the valve body. A through hole is provided at the top center of the piston rod. A telescopic rod is provided inside the through hole. The top of the telescopic rod is connected to the valve stem. A sliding plate is fixedly sleeved on the top of the surface of the telescopic rod. The diameter of the sliding plate matches the diameter of the piston rod, and the bottom of the sliding plate is located at the top of the piston rod.

[0010] Preferably, the bottom of the piston rod is located below the bottom of the valve body, and a push plate is provided at the bottom of the piston rod.

[0011] Preferably, a fixing ring is sleeved on the surface of the piston rod, a second suction plate is provided at the bottom of the fixing ring, and the top of the second suction plate is magnetically connected to the top of the first suction plate.

[0012] Preferably, two sealing grooves are provided in a vertical direction at the connection between the outer surface of the fixing ring and the circular hole of the first suction plate, and the two sealing grooves are respectively provided with an O-ring and a polytetrafluoroethylene gasket.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model relates to a vibrating screen pneumatic plunger valve. The vibrating screen pneumatic plunger valve of the prior art cannot achieve effective sealing within the controllable range during the screening process. The utility model plunger valve adopts a combination of O-rings and PTFE gaskets for sealing. During use, the discharge rate can be different according to different liquid medicine requirements. The lifting speed of the plunger valve can be controlled and can be controlled by the control valve on the cylinder. This valve is a customized plunger valve specially designed for screens, which can completely solve the problem that the valves on the market cannot meet the needs of screens, and it complements other accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall cross-sectional view structure of the utility model;

[0017] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1. valve body; 2. first flange; 3. second flange; 4. cylinder; 5. first suction plate; 6. piston rod; 7. push plate; 8. valve stem; 9. telescopic rod; 10. through hole; 11. sliding plate; 12. fixing ring; 13. O-ring; 14. PTFE gasket; 15. second suction plate; 16. sealing groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] A pneumatic plunger valve for a vibrating screen comprises a valve body 1 and a cylinder 4. The valve body 1 is a sleeve-shaped valve body with a through top and a through bottom. A first flange 2 is arranged on the top of the valve body 1, and the first flange 2 is connected to the cylinder 4 through a second flange 3. The top of the second flange 3 is connected to the bottom of the cylinder 4. A valve stem 8 is arranged at the bottom center of the cylinder 4. A first suction plate 5 is arranged on the bottom of the valve body 1, and a circular hole is opened through the center of the first suction plate 5. A piston rod 6 is arranged inside the circular hole. The top of the piston rod 6 is located inside the valve body 1. A through hole 10 is opened at the top center of the piston rod 6. A telescopic rod 9 is arranged inside the through hole 10. The top of the telescopic rod 9 is connected to the valve stem 8. A sliding plate 11 is fixedly sleeved on the top of the surface of the telescopic rod 9. The diameter of the sliding plate 11 matches the diameter of the piston rod 6, and the bottom of the sliding plate 11 is located at the top of the piston rod 6.

[0024] Furthermore, the bottom of the piston rod 6 is located below the bottom of the valve body 1 , and a push plate 7 is provided at the bottom of the piston rod 6 .

[0025] Furthermore, a fixing ring 12 is sleeved on the surface of the piston rod 6 , a second suction plate 15 is provided at the bottom of the fixing ring 12 , and the top of the second suction plate 15 is magnetically connected to the top of the first suction plate 5 .

[0026] Furthermore, two sealing grooves 16 are provided in the vertical direction at the connection between the outer surface of the fixing ring 12 and the circular hole of the first suction plate 5 , and the two sealing grooves 16 are respectively provided with an O-ring 13 and a polytetrafluoroethylene gasket 14 .

[0027] Specifically, the plunger valve of the utility model generally adopts an O-ring 13 and a PTFE gasket 14 to be sealed in combination, so that the pneumatic plunger valve of the vibrating screen of the utility model can achieve effective sealing within a controllable range during the screening process.

[0028] Working principle: During use, the utility model can control the lifting speed of the plunger valve according to the different discharge rates required by different liquid medicines. It can be controlled by the control valve on the cylinder 4, and then the extension height of the valve stem 8 can be changed. When the extension height becomes shorter, the piston rod 6 is moved by pressing the push plate 7, and then the top of the piston rod 6 is moved to the bottom of the valve stem 8, so that the lifting speed of the plunger valve can be further controlled.

[0029] Specifically, the utility model adjusts the appropriate length of the air column inside the valve body 1 according to the discharge rate required by different liquid medicines by changing the length of the air column inside the valve body 1 and thereby controlling the lifting speed of the plunger valve.

[0030] In the utility model, the cylinder 4 and the valve body 1 are connected by the first flange 2 and the second flange 3, which can be easily disassembled. In addition, the piston rod 6 and the fixing ring 12 are connected by means of a snap-on slot, and the second suction plate 15 at the bottom of the fixing ring 12 is connected to the first suction plate 5 by a magnetic suction method, which can also be easily disassembled. When a certain component is damaged, it can be disassembled and replaced.

[0031] Specifically, the bottom of the push plate 7 is connected to the vibrating screen. When the vibrating screen is working, it will press the push plate 7. The movement of the push plate 7 will cause the piston rod 6 to move downward. During the movement, the piston rod 6 will push the sliding plate 11 to move. The movement of the sliding plate 11 will compress the telescopic rod 9, thereby breaking the seal between the vibrating screen and the surface of the liquid outlet. The vibrating screen can vibrate up and down in the vertical direction, so that the seal between the vibrating screen and the liquid outlet will be broken and then sealed again, and then broken again. The frequency of this repetition can be adjusted by the cylinder 4.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibrating screen pneumatic plunger valve, comprising a valve body (1) and a cylinder (4), characterized in that: The valve body (1) is in the shape of a sleeve with a through top and bottom. A first flange (2) is provided at the top of the valve body (1). The first flange (2) is connected to the cylinder (4) via a second flange (3). The top of the second flange (3) is connected to the bottom of the cylinder (4). A valve stem (8) is provided at the center of the bottom of the cylinder (4). A first suction plate (5) is provided at the bottom of the valve body (1). A circular hole is provided at the center of the first suction plate (5). A piston rod is provided inside the circular hole. (6), the top of the piston rod (6) is located inside the valve body (1), a through hole (10) is opened at the center of the top of the piston rod (6), a telescopic rod (9) is arranged inside the through hole (10), the top of the telescopic rod (9) is connected to the valve stem (8), a sliding plate (11) is fixedly sleeved on the top of the surface of the telescopic rod (9), the diameter of the sliding plate (11) matches the diameter of the piston rod (6), and the bottom of the sliding plate (11) is located at the top of the piston rod (6).

2. The vibrating screen pneumatic plunger valve according to claim 1, characterized in that: The bottom of the piston rod (6) is located below the bottom of the valve body (1), and a push plate (7) is provided at the bottom of the piston rod (6).

3. The vibrating screen pneumatic plunger valve according to claim 1, characterized in that: A fixing ring (12) is sleeved on the surface of the piston rod (6), a second suction plate (15) is provided at the bottom of the fixing ring (12), and the top of the second suction plate (15) is magnetically connected to the top of the first suction plate (5).

4. The vibrating screen pneumatic plunger valve according to claim 3, characterized in that: Two sealing grooves (16) are provided in a vertical direction at the connection point between the outer surface of the fixing ring (12) and the circular hole of the first suction plate (5), and the two sealing grooves (16) are respectively provided with an O-ring (13) and a polytetrafluoroethylene gasket (14).

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