Energy-saving pneumatic conveying valve

Abstract

The utility model discloses an energy-saving pneumatic conveying valve which comprises a ventilation pipeline, a switch assembly is installed on the ventilation pipeline, a pressure relief assembly is installed on the ventilation pipeline, the pressure relief assembly comprises an air storage cylinder fixedly installed at the top end of the ventilation pipeline, the air storage cylinder is communicated with the ventilation pipeline, a piston is movably installed in the air storage cylinder, and the air storage cylinder is communicated with the ventilation pipeline. The outer wall of the piston is tightly attached to the inner wall of the air cylinder, a first spring is fixedly installed at the top end of the piston, the top end of the first spring is fixedly connected with the inner top wall of the air cylinder, a magnetic block is fixedly installed at the top end of the piston, and an electromagnet is fixedly installed on the inner top wall of the air cylinder. During working, when the set air pressure is large, the bottom wall of the blocking plug moves upwards under the action of the air pressure, air enters the air storage cylinder through the fixing ring, the air pressure in the ventilation pipeline is stable along with the increase of the amount of the entering air, the piston moves upwards, meanwhile, redundant air is stored, the air is prevented from being directly exhausted, and the service life of the ventilation pipeline is prolonged. And energy is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying valves, in particular to an energy-saving pneumatic conveying valve. Background Art

[0002] Pneumatic conveying valves play a key role in pneumatic conveying systems. They have multiple functions to ensure the stability, reliability and efficiency of the material conveying process. Pneumatic conveying valves include inlet regulating valves, dump valves, pressure relief valves, stop valves, etc. Valves have the functions of shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief in pneumatic conveying systems. They are widely used in the fields of material conveying, dust control and waste gas treatment. Different valves play different roles in the pneumatic conveying process. The synergistic effect of these valves can make the conveying process of the pneumatic conveying system more stable and reliable, and improve the production efficiency and economic benefits of the enterprise. However, the following defects still exist:

[0003] When the pressure relief valve in the pneumatic conveying valve releases the pressure of the gas inside the pipeline, the introduced gas is directly released, resulting in gas waste. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an energy-saving pneumatic conveying valve, which effectively solves the problem that when the pressure relief valve releases the pressure of the gas inside the pipeline, the gas introduced directly leaks out, causing gas waste.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving pneumatic conveying valve, comprising a ventilation pipeline, a switch assembly is installed on the ventilation pipeline, and a pressure relief assembly is installed on the ventilation pipeline;

[0006] The pressure relief assembly includes an air cylinder fixedly installed on the top of the ventilation pipe. The air cylinder is connected to the ventilation pipe. A piston is movably installed inside the air cylinder. The outer wall of the piston is in close contact with the inner wall of the air cylinder. A first spring is fixedly installed on the top of the piston. The top of the first spring is fixedly connected to the inner top wall of the air cylinder. A magnetic block is fixedly installed on the top of the piston. An electromagnet is fixedly installed on the inner top wall of the air cylinder.

[0007] Preferably, a fixing ring is fixedly mounted on the inner wall of the air storage cylinder, the fixing ring is located below the piston, a top plate is provided above the fixing ring, a stopper is fixedly mounted on the bottom end of the top plate, the outer wall of the stopper is in close contact with the inner wall of the piston, and the diameter of the top plate is smaller than the inner diameter of the air storage cylinder.

[0008] Preferably, a guide rod is fixedly installed at an equal angle on the top of the fixing ring, the guide rod is slidably connected to the top plate, a limit plate is fixedly installed on the top of the guide rod, a second spring is fixedly installed on the bottom end of the limit plate, and the bottom end of the second spring is fixedly connected to the top wall of the top plate.

[0009] Preferably, a vertical plate is fixedly mounted on the bottom end of the stopper, the vertical plate is located inside the ventilation duct, and a longitudinal groove is formed on the vertical plate.

[0010] Preferably, an extrusion block is provided on the inner side of the longitudinal groove, and an extrusion slope is provided on the top of the extrusion block, which contacts the inner top wall of the longitudinal groove. A cross bar is fixedly installed on one side of the extrusion block, a top ball is fixedly installed on one end of the cross bar, and a slider is fixedly installed on the bottom end of the cross bar. The slider is slidably installed inside the slide groove, and the interior of the slide groove is opened on the inner bottom wall of the ventilation duct. The third spring of the slider is fixedly installed on the side of the slider close to the vertical plate.

[0011] Preferably, the switch assembly includes a plate box fixedly mounted on the ventilation duct, wherein the top ball is located inside the plate box, a baffle is slidably mounted inside the plate box, the bottom end of the baffle is arranged to be an arc surface, the top end of the baffle is respectively fixedly connected to the output ends of two cylinders, and the cylinders are fixedly mounted on the top end of the plate box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] During operation, when the set air pressure is high, the bottom wall of the stopper moves upward under the action of the air pressure, and the gas enters the air storage cylinder through the fixing ring. As the amount of gas entering increases, the piston moves upward, so that the air pressure inside the ventilation pipe is stable, and at the same time, the excess gas is stored to avoid direct discharge of the gas, thus saving energy.

[0014] During operation, when the amount of gas inside the air cylinder is too large to continue to have a pressure relief effect, the piston is controlled to move downward while the baffle is controlled to move downward, which can push the top plate to move upward to open the fixing ring. When one end of the ventilation pipe is closed for air intake and the other end is closed, the gas stored in the air cylinder is passed through the ventilation pipe again for air intake, thereby avoiding waste of gas during pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of an energy-saving pneumatic conveying valve of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the pressure relief assembly of the utility model;

[0019] Figure 3 For the utility model Figure 2Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. ventilation duct; 2. switch assembly; 201. plate box; 202. baffle; 203. arc surface; 204. cylinder; 3. pressure relief assembly; 301. air storage cylinder; 302. piston; 303. first spring; 304. magnetic block; 305. electromagnet; 306. fixing ring; 307. top plate; 308. stopper; 309. guide rod; 310. limit plate; 311. second spring; 312. vertical plate; 313. longitudinal groove; 314. extrusion block; 315. extrusion slope; 316. cross bar; 317. top ball; 318. slider; 319. slide groove; 320. third spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Embodiment 1, by Figure 1-3 The utility model relates to an energy-saving pneumatic conveying valve, comprising a ventilation pipe 1, a switch assembly 2 is installed on the ventilation pipe 1, and a pressure relief assembly 3 is installed on the ventilation pipe 1;

[0023] The pressure relief assembly 3 includes an air cylinder 301 fixedly mounted on the top of the ventilation pipe 1, the air cylinder 301 is connected to the ventilation pipe 1, a piston 302 is movably mounted inside the air cylinder 301, the outer wall of the piston 302 is in close contact with the inner wall of the air cylinder 301, a first spring 303 is fixedly mounted on the top of the piston 302, the top of the first spring 303 is fixedly connected to the inner top wall of the air cylinder 301, a magnetic block 304 is fixedly mounted on the top of the piston 302, an electromagnet 305 is fixedly mounted on the inner top wall of the air cylinder 301, a fixing ring 306 is fixedly mounted on the inner wall of the air cylinder 301, the fixing ring 306 is located below the piston 302, and the upper part of the fixing ring 306 is fixedly mounted on the inner wall of the air cylinder 301. A top plate 307 is provided, and a stopper 308 is fixedly installed at the bottom end of the top plate 307. The outer wall of the stopper 308 is in close contact with the inner wall of the piston 302. The diameter of the top plate 307 is smaller than the inner diameter of the gas storage cylinder 301. A guide rod 309 is fixedly installed at the top of the fixing ring 306 at an equal angle. The guide rod 309 is slidably connected to the top plate 307. A limit plate 310 is fixedly installed at the top end of the guide rod 309. A second spring 311 is fixedly installed at the bottom end of the limit plate 310. The bottom end of the second spring 311 is fixedly connected to the top wall of the top plate 307. A vertical plate 312 is fixedly installed at the bottom end of the stopper 308. The vertical plate 312 is located inside the ventilation duct 1. The vertical plate 31 2 is provided with a longitudinal groove 313, an extrusion block 314 is provided on the inner side of the longitudinal groove 313, an extrusion slope 315 is provided on the top of the extrusion block 314, and the extrusion slope 315 contacts the inner top wall of the longitudinal groove 313, a cross bar 316 is fixedly installed on one side of the extrusion block 314, a top ball 317 is fixedly installed on one end of the cross bar 316, a slider 318 is fixedly installed on the bottom end of the cross bar 316, and the slider 318 is slidably installed inside the slide groove 319, and the inside of the slide groove 319 is opened on the inner bottom wall of the ventilation duct 1, and the slider 318 is fixedly installed on the side of the vertical plate 312. When the air pressure is large, the bottom wall of the stopper 308 moves upward under the action of the air pressure. , the gas enters the gas storage cylinder 301 through the fixing ring 306, and as the amount of gas entering increases, the piston 302 moves upward, so that the air pressure inside the ventilation pipe 1 is stable, and at the same time, the excess gas is stored to avoid direct discharge of the gas, saving energy. When the amount of gas inside the gas storage cylinder 301 is too large to continue to have a pressure relief effect, the piston 302 is controlled to move downward while the baffle 202 is controlled to move downward, which can push the top plate 307 to move upward to open the fixing ring 306. When one end of the ventilation pipe 1 is air intake and the other end is closed, the gas stored in the gas storage cylinder 301 is passed through the ventilation pipe 1 again for air intake, thereby avoiding waste of gas during pressure relief.

[0024] The switch assembly 2 includes a plate box 201 fixedly mounted on the ventilation duct 1, wherein the top ball 317 is located inside the plate box 201, and a baffle 202 is slidably mounted inside the plate box 201, and the bottom end of the baffle 202 is provided with an arc surface 203, and the top end of the baffle 202 is fixedly connected to the output ends of two cylinders 204, respectively, and the cylinders 204 are fixedly mounted on the top end of the plate box 201.

[0025] Working principle: During the process of conveying gas, the gas flows from one end of the ventilation pipe 1 close to the plate box 201 to the other end. When the gas pressure is high, the bottom wall of the stopper 308 moves upward under the action of the gas pressure. At this time, the gas enters the gas storage cylinder 301 through the fixing ring 306. As the amount of gas entering increases, the piston 302 moves upward, so that the gas pressure inside the ventilation pipe 1 is stable and the gas is prevented from being discharged directly.

[0026] When the amount of gas inside the gas cylinder 301 is too large to continue to have a pressure relief effect, the electromagnet 305 is energized and controls the output end of the cylinder 204 to extend. The electromagnet 305 is energized to generate a repulsive force on the magnetic block 304, causing the piston 302 to move downward, and the output end of the cylinder 204 extends to push the baffle 202 to move downward. When the baffle 202 closes the box 201, the arc surface 203 generates a thrust on the top ball 317, causing the extrusion block 314 to move toward the vertical plate 312, so that the extrusion slope 315 on the extrusion block 314 generates an upward thrust on the vertical plate 312, pushing the top plate 307 to move upward to open the fixing ring 306, and at the same time cooperating with the piston 302 to move downward, the gas stored in the gas cylinder 301 is passed out along the ventilation pipe 1 again, avoiding waste of gas during pressure relief and saving energy.

Claims

1. An energy-saving pneumatic conveying valve, comprising a ventilation pipe (1), characterized in that: A switch assembly (2) is installed on the ventilation duct (1), and a pressure relief assembly (3) is installed on the ventilation duct (1); The pressure relief assembly (3) comprises an air storage cylinder (301) fixedly mounted on the top end of the ventilation pipe (1), the air storage cylinder (301) being connected to the ventilation pipe (1), a piston (302) being movably mounted inside the air storage cylinder (301), the outer wall of the piston (302) being in close contact with the inner wall of the air storage cylinder (301), a first spring (303) being fixedly mounted on the top end of the piston (302), the top end of the first spring (303) being fixedly connected to the inner top wall of the air storage cylinder (301), a magnetic block (304) being fixedly mounted on the top end of the piston (302), and an electromagnet (305) being fixedly mounted on the inner top wall of the air storage cylinder (301).

2. An energy-saving pneumatic conveying valve according to claim 1, characterized in that: A fixing ring (306) is fixedly mounted on the inner wall of the gas storage cylinder (301), the fixing ring (306) is located below the piston (302), a top plate (307) is provided above the fixing ring (306), a stopper (308) is fixedly mounted at the bottom end of the top plate (307), the outer wall of the stopper (308) is in close contact with the inner wall of the piston (302), and the diameter of the top plate (307) is smaller than the inner diameter of the gas storage cylinder (301).

3. An energy-saving pneumatic conveying valve according to claim 2, characterized in that: A guide rod (309) is fixedly installed at an equal angle on the top end of the fixing ring (306); the guide rod (309) is slidably connected to the top plate (307); a limit plate (310) is fixedly installed on the top end of the guide rod (309); a second spring (311) is fixedly installed on the bottom end of the limit plate (310); and the bottom end of the second spring (311) is fixedly connected to the top wall of the top plate (307).

4. An energy-saving pneumatic conveying valve according to claim 2, characterized in that: A vertical plate (312) is fixedly mounted on the bottom end of the blocking plug (308); the vertical plate (312) is located inside the ventilation duct (1); and a longitudinal groove (313) is formed on the vertical plate (312).

5. An energy-saving pneumatic conveying valve according to claim 4, characterized in that: An extrusion block (314) is provided on the inner side of the longitudinal groove (313), an extrusion slope (315) is provided on the top of the extrusion block (314), and the extrusion slope (315) contacts the inner top wall of the longitudinal groove (313). A cross bar (316) is fixedly installed on one side of the extrusion block (314), a top ball (317) is fixedly installed on one end of the cross bar (316), and a slider (318) is fixedly installed on the bottom end of the cross bar (316). The slider (318) is slidably installed inside a slide groove (319), and the inside of the slide groove (319) is provided on the inner bottom wall of the ventilation duct (1), and a third spring (320) is fixedly installed on the side of the slider (318) close to the vertical plate (312).

6. An energy-saving pneumatic conveying valve according to claim 5, characterized in that: The switch assembly (2) comprises a plate box (201) fixedly mounted on the ventilation duct (1), wherein the top ball (317) is located inside the plate box (201), a baffle (202) is slidably mounted inside the plate box (201), the bottom end of the baffle (202) is provided with an arc surface (203), the top end of the baffle (202) is respectively fixedly connected to the output ends of two cylinders (204), and the cylinders (204) are fixedly mounted on the top end of the plate box (201).

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