Pneumatic quick turn-off sliding plate valve for powder conveying

Abstract

The utility model relates to the technical field of spiral conveyors, in particular to a pneumatic quick turn-off sliding plate valve for powder conveying. The sliding plate valve comprises a sliding plate valve body, a plurality of electromagnets are arranged at the position, corresponding to the circumferential direction of a valve plate, of a pipe opening section of the sliding plate valve body, and the electromagnets are used for attracting the valve plate. And in a normal working state, the electromagnet adsorbs the valve plate, so that the powder conveying pipeline is quickly switched off. When the air cylinder loses efficacy or has other faults, the standby power supply of the electromagnet can be activated immediately, the fixed position of the valve plate is kept, and the valve plate is prevented from moving due to the failure of the air cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors, in particular to a pneumatic fast-closing slide valve for powder material conveying. Background Art

[0002] In powder conveying systems, slide valves are a commonly used control device used to open and close the powder in pipelines. Traditional slide valves typically rely on cylinders or other mechanical actuators to push the valve plate to achieve the valve's opening and closing action. However, this design has some limitations:

[0003] When the air source fails or the cylinder fails, the valve plate may not be able to remain closed, causing powder leakage, affecting the production environment and product quality.

[0004] Traditional slide valves cannot respond quickly in emergency situations, which may cause the production line to stop and reduce production efficiency.

[0005] In order to overcome the above problems, those skilled in the art have been seeking a more reliable and safe slide valve for powder delivery. Utility Model Content

[0006] In order to solve the above problems, the utility model discloses a pneumatic fast shut-off slide valve for powder material conveying.

[0007] In order to achieve the above objectives, the present application discloses a pneumatic quick-shutoff slide valve for powder conveying, including a slide valve body, wherein the pipe mouth section of the slide valve body is provided with multiple electromagnets corresponding to the circumference of the valve plate, and the electromagnets are used to adsorb the valve plate.

[0008] There are three electromagnets, which are correspondingly distributed at the bottom end and the front and rear sides of the valve plate.

[0009] Lubricating strips are embedded on both sides of the valve plate, and the lubricating strips are used to contact the side walls of the slide valve body to reduce sliding friction.

[0010] The lubricating strip is a graphite strip.

[0011] A slot is provided on the side wall of the slide valve body along the length direction of the valve plate. A plurality of balls are provided in the slot along the length direction thereof. The balls are used to contact and cooperate with the side of the valve plate.

[0012] The slide valve of the present embodiment includes a slide valve body. Multiple electromagnets are positioned around the valve plate in the nozzle section of the slide valve body. These electromagnets are used to attract the valve plate. Under normal operating conditions, the electromagnets attract the valve plate, rapidly shutting off the powder delivery pipeline. In the event of cylinder failure or other malfunction, the electromagnets' backup power supply is immediately activated, maintaining the valve plate in place and preventing movement due to cylinder failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a pneumatic quick-closing slide valve for powder delivery in an embodiment of the present application;

[0014] Figure 2 This is a schematic structural diagram of the valve plate in an embodiment of the present application;

[0015] Figure 3 Schematic diagram of the position of the slot in the embodiment of the present application. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0017] Example: Figure 1-3 As shown, a pneumatic quick-shutoff slide valve for powder conveying includes a slide valve body 100 , wherein a pipe mouth section 101 of the slide valve body 100 is provided with a plurality of electromagnets 103 circumferentially corresponding to a valve plate 102 , and the electromagnets 103 are used to adsorb the valve plate 102 .

[0018] The magnetic material of the electromagnet 103 is selected from materials with high remanence and high coercive force to ensure that it can still maintain a certain degree of magnetism after power failure, so that the valve plate 102 can still be fixed when the cylinder fails.

[0019] The coil of the electromagnet 103 is designed as a double winding, one for normal operation and the other for backup power supply in emergency situations to enhance the reliability of the system.

[0020] Under normal working conditions, the electromagnet 103 attracts the valve plate 102 to quickly shut off the powder delivery pipeline.

[0021] When the cylinder fails or other faults occur, the backup power supply of the electromagnet 103 can be activated immediately to keep the valve plate 102 in a fixed position and prevent the valve plate from moving due to the cylinder failure.

[0022] Three electromagnets 103 are provided, located at the bottom and front and rear sides of the valve plate 102. These electromagnets provide a balanced attraction force, ensuring even contact between the valve plate and the valve seat when closed. This also improves the valve's sealing performance. The magnetic forces acting on the bottom and sides of the valve plate 102 create a balanced torque, helping the valve plate remain level when closed and preventing tilting due to unbalanced torque.

[0023] The three electromagnet design provides a redundancy mechanism. Even if one electromagnet fails, the remaining two electromagnets can still provide sufficient magnetic force to keep the valve plate closed.

[0024] Lubricating strips 107 are embedded on both sides of the valve plate 102 . The lubricating strips 107 are used to contact the side walls of the slide valve body 100 to reduce sliding friction.

[0025] Lubricating strips 107 are embedded on both sides of the valve plate 102, ensuring close contact with the sidewalls of the slide valve body 100. These strips can be mounted on the valve plate by embedding, bonding, or mechanical fastening. When in contact with the sidewalls of the valve body, these strips reduce friction during valve plate movement. The material of the lubricating strips 107 has self-lubricating properties, reducing friction between the valve plate 102 and the sidewalls of the valve body during movement. Specifically, the lubricating strips 107 are graphite strips.

[0026] A slot 109 is provided on the side wall 108 of the slide valve body 100 along the length direction of the valve plate 102 . A plurality of balls 110 are provided in the slot 109 along the length direction thereof. The balls 110 are used to contact and cooperate with the side of the valve plate 102 .

[0027] Slots 109 are located on the sidewalls 108 of the slide valve body 100, running parallel to the length of the valve plate 102. The slots are slightly wider than the diameter of the balls 110 to ensure smooth rolling without dislodging. The bottom and sides of slots 109 are smooth to reduce friction and wear on the balls. The balls 110 are evenly distributed within slots 109 and arranged along the length of the valve plate 102.

[0028] The balls 110 roll in the slots 109, converting the sliding friction between the valve plate 102 and the valve body sidewall into rolling friction, significantly reducing the friction coefficient. Rolling friction produces less wear than sliding friction, helping to extend the service life of the valve plate and valve body.

[0029] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pneumatic quick-shutoff slide valve for powder delivery, characterized by: The invention comprises a slide valve body (100), wherein a pipe mouth section (101) of the slide valve body (100) is provided with a plurality of electromagnets (103) in the circumferential direction corresponding to a valve plate (102), and the electromagnets (103) are used for adsorbing the valve plate (102).

2. The slide valve according to claim 1, characterized in that: Three electromagnets (103) are provided and are correspondingly distributed at the bottom end and the front and rear sides of the valve plate (102).

3. The slide valve according to claim 1 or 2, characterized in that: Lubricating strips (107) are embedded on both sides of the valve plate (102), and the lubricating strips (107) are used to contact the side walls of the slide valve body (100) to reduce sliding friction.

4. The slide valve according to claim 3, characterized in that: The lubricating strip (107) is a graphite strip.

5. The slide valve according to any one of claims 1 to 4, characterized in that: A slot (109) is provided on the side wall (108) of the slide valve body (100) along the length direction of the valve plate (102), and a plurality of balls (110) are provided in the slot (109) along the length direction thereof. The balls (110) are used to contact and cooperate with the side of the valve plate (102).

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