Novel pressure balance valve

Abstract

The utility model discloses a novel pressure balance valve, relates to the technical field of warehousing and conveying, aims to solve the problem that in the prior art, a vacuum stock bin is frequently sucked flat due to negative pressure or exploded due to positive pressure, and adopts the technical scheme that connecting flanges are arranged at the two ends of a valve body, and a negative pressure balance mechanism is arranged in the valve body; the negative pressure balance mechanism comprises a shaft sleeve and a valve shaft, the shaft sleeve is provided with an air hole, the valve shaft is connected to the interior of the shaft sleeve in a sliding mode, one end of the valve shaft is provided with a first check block, the other end of the valve shaft is provided with an adjusting mechanism, and the positive pressure balance mechanism is arranged in the first check block. When the negative pressure in the stock bin is larger than the compression force of the first spring, the first check block can move downwards to supplement internal gas, when the positive pressure in the stock bin is larger than the compression force of the second spring, the second check block can move upwards to release the internal gas, and the structure is not electrically controlled, safe, stable, wide in application range and convenient to disassemble quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of storage and transportation, in particular to a novel pressure balancing valve. Background Art

[0002] At present, the use of storage equipment in the industry is increasing due to the rise of vacuum conveying equipment, and problems are also coming along. Phenomena such as flattening due to negative pressure or warehouse explosion due to positive pressure are frequent. This product is designed in response to market demand to solve the occurrence of such problems, and to achieve automatic balance between positive and negative pressures. It is a pressure balancing valve that is not controlled by electrical appliances. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a new type of pressure balancing valve, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a new type of pressure balancing valve, which adopts a technical solution including a valve body and a connecting flange. The two ends of the valve body are detachably connected to the connecting flanges, and the connecting flanges are used to connect to the silo. The inside of the valve body is detachably connected to a negative pressure balancing mechanism, and the negative pressure balancing mechanism includes a sleeve and a valve shaft. The outer surface of the valve shaft is threaded, and a vent hole is provided on the sleeve, and the vent hole facilitates gas to pass through. The valve shaft is slidably connected to the inside of the sleeve, and a first stopper is provided at one end of the valve shaft, and an adjustment mechanism is provided at the other end of the valve shaft, and a positive pressure balancing mechanism is provided inside the first stopper.

[0005] As a preferred technical solution of the utility model, a cavity is provided in the first block, a circular hole is provided at the bottom of the cavity, the cavity is connected to the outside world through the circular hole, a guide hole is provided at the top of the cavity, the guide hole is connected to the outside world, a plurality of guide holes are provided, and an annular array is arranged on the first block, two of the guide holes are used to stabilize the sliding of the guide column, and the remaining guide holes are used for the passage of gas, and a platform is provided on the first block.

[0006] As a preferred technical solution of the utility model, a long threaded hole is opened inside the valve shaft, and the long threaded hole extends from the top of the valve shaft to the cavity. The long threaded hole is threadedly connected to a long bolt, and the upper end of the long bolt is a hexagon socket for rotating with a suitable wrench. The lower end of the long bolt is a baffle, and rotating the long bolt can adjust the balancing pressure that the positive pressure balancing mechanism can withstand.

[0007] As a preferred technical solution of the utility model, the positive pressure balancing mechanism includes a second stopper and the guide column, the second stopper is located inside the cavity, the diameter of the second stopper is larger than the circular hole, a sealing ring is provided on the contact surface between the second stopper and the circular hole, the guide column is slidably connected to the inside of the guide hole, and a second spring is provided between the second stopper and the baffle, and the sealing and opening of the circular hole are achieved by the up and down movement of the second stopper.

[0008] As a preferred technical solution of the utility model, the adjusting mechanism includes a gasket cap, which is slidably connected to the valve shaft, and a nut is provided above the gasket cap, and the nut is threadedly connected to the valve shaft. A first spring is directly provided between the gasket cap and the sleeve, and the nut is rotated to adjust the balancing pressure that the negative pressure balancing mechanism can withstand.

[0009] As a preferred technical solution of the utility model, a step is provided inside the valve body, the sleeve is placed on the step, the first stopper is located below the step, the platform and the bottom of the step are fitted together, and the rebound force of the first spring brings the first stopper and the sleeve close to each other to clamp the step.

[0010] Compared with the prior art, the beneficial effect of the utility model is as follows: through the arrangement of the negative pressure balancing mechanism and the positive pressure balancing mechanism, when the negative pressure inside the silo is greater than the compression force of the first spring, the first stopper will move downward to replenish the internal gas, and when the positive pressure inside the silo is greater than the compression force of the second spring, the second stopper will move upward to release the internal gas. This structure is not subject to electrical control, is safe and stable, has a wide range of uses, and is also easy to disassemble quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the utility model and the silo assembly;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model;

[0013] Figure 3 This is a cross-sectional view of the utility model Figure 1 ;

[0014] Figure 4 This is a cross-sectional view of the utility model Figure 2 ;

[0015] Figure 5 This is a cross-sectional view of the valve body of the utility model;

[0016] Figure 6 This is a cross-sectional view of the valve shaft of the utility model;

[0017] Figure 7This is a cross-sectional view of the first stopper of the utility model;

[0018] Figure 8 This is a schematic diagram of the structure of the first stopper of the utility model;

[0019] Fig. 9 This is a schematic diagram of the long bolt structure of the utility model;

[0020] Fig.10 This is a schematic diagram of the negative pressure state of the utility model;

[0021] Fig.11 It is a schematic diagram of the positive pressure state of the utility model.

[0022] In the figure: 1. valve body; 101. step; 2. connecting flange; 3. negative pressure balancing mechanism; 301. bushing; 3011. air vent; 302. valve shaft; 303. first stopper; 3031. platform; 304. cavity; 305. guide hole; 306. long threaded hole; 307. first spring; 308. gasket; 309. nut; 4. positive pressure balancing mechanism; 401. second stopper; 402. guide column; 403. second spring; 404. long bolt; 405. baffle; 5. silo. DETAILED DESCRIPTION

[0023] 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. Example 1

[0024] like Figures 1 to 11 As shown, the utility model discloses a novel pressure balancing valve, which adopts a technical solution comprising a valve body 1 and a connecting flange 2, wherein both ends of the valve body 1 are connected to the connecting flange 2 by threads, and the connecting flange 2 is connected to a silo 5, as shown in FIG. Figure 3As shown, a step 101 is provided inside the valve body 1, and a negative pressure balancing mechanism 3 is detachably connected inside the valve body 1. A positive pressure balancing mechanism 4 is provided inside the negative pressure balancing mechanism 3. The negative pressure balancing mechanism 3 includes a sleeve 301, and the sleeve 301 is placed above the step 101. A valve shaft 302 is slidably connected inside the sleeve 301. The outer surface of the valve shaft 302 has a thread. A first stopper 303 is provided under the valve shaft 302. A platform 3031 is provided on the first stopper 303. The first stopper 303 is located at the lower end of the step 101. The lower end of the step 101 fits with the platform 3031. A gasket 308 is slidably connected to the valve shaft 302, and a nut 309 is arranged above the gasket 308, and the nut 309 is threadedly connected to the valve shaft 302. A first spring 307 is arranged between the gasket 308 and the sleeve 301, and a threaded long hole 306 is provided in the valve shaft 302, and a cavity 304 is provided inside the first stopper 303, and the cavity 304 is connected to the threaded long hole 306. A circular hole is provided at the bottom of the first stopper 303, and the circular hole is connected to the cavity 304. A guide hole 305 is also provided at the top of the cavity 304, and there are multiple guide holes 305, which are arranged in a circular array on the first stopper 303.

[0025] As a preferred technical solution of the utility model, there is a positive pressure balancing mechanism 4 inside the cavity 304, and the positive pressure balancing mechanism 4 includes a long bolt 404, and the long bolt 404 is threadedly connected to the inside of the threaded long hole 306. The top of the long bolt 404 is provided with a hexagon socket, and the bottom of the long bolt 404 is provided with a baffle 405 inside the cavity 304, and a second block 401 is provided below the baffle 405. A guide column 402 is provided on the second block 401, and the guide column 402 is mirror-set on the second block 401. The guide column 402 is slidably connected to the inside of the guide hole 305, and a second spring 403 is provided between the second block 401 and the baffle 405.

[0026] The working principle of the utility model is to connect the balancing valve to the silo 5 through the connecting flange 2. Figure 1 As shown, when the negative pressure value inside the silo 5 is greater than the force of the first spring 307, the first stopper 303 will move downward due to the suction force of the negative pressure. At this time, a gap will be generated between the platform 3031 and the bottom of the step 101, sucking the external gas into the silo 5. Fig.10As shown, the pressure inside the silo 5 is balanced. When the pressure of the first spring needs to be adjusted, the nut 309 can be rotated. When the positive pressure inside the silo 5 is greater than the force of the second spring 403, the first stopper 303 will not move because the platform 3031 and the step 101 are in contact with each other. The second stopper 401 moves upward under the guidance of the guide column 402 and the guide hole 305, so that a gap is generated between the second stopper 401 and the circular hole, and the gas enters the cavity 304 from the circular hole, and then is discharged through the guide hole 305 and the air vent 3011. Fig.11 As shown, the internal pressure of the silo 5 is balanced. When the pressure of the second spring 403 needs to be adjusted, the long bolt 404 can be rotated.

[0027] The mechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0028] Components not described in detail herein are prior art.

[0029] Although 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 novel pressure balancing valve, comprising a valve body (1) and a connecting flange (2), characterized in that: The two ends of the valve body (1) are detachably connected to the connecting flange (2), and the interior of the valve body (1) is detachably connected to a negative pressure balancing mechanism (3), the negative pressure balancing mechanism (3) comprising a shaft sleeve (301) and a valve shaft (302), the outer surface of the valve shaft (302) being threaded, the shaft sleeve (301) being provided with an air vent (3011), the valve shaft (302) being slidably connected to the interior of the shaft sleeve (301), one end of the valve shaft (302) being provided with a first stopper (303), the other end of the valve shaft (302) being provided with an adjustment mechanism, and the interior of the first stopper (303) being provided with a positive pressure balancing mechanism (4).

2. A new type of pressure balancing valve according to claim 1, characterized in that: A cavity (304) is provided in the first stopper (303), a circular hole is provided at the bottom of the cavity (304), the cavity (304) is communicated with the outside world through the circular hole, a guide hole (305) is provided at the top of the cavity (304), the guide hole (305) is communicated with the outside world, a plurality of guide holes (305) are provided, and the guide holes (305) are arranged in a circular array on the first stopper (303), and a platform (3031) is provided on the first stopper (303).

3. A new type of pressure balancing valve according to claim 2, characterized in that: A long threaded hole (306) is provided inside the valve shaft (302), and the long threaded hole (306) extends from the top of the valve shaft (302) to the cavity (304). The long threaded hole (306) is internally threadedly connected to a long bolt (404), and the upper end of the long bolt (404) is a hexagon socket, and the lower end of the long bolt (404) is a baffle (405).

4. A new type of pressure balancing valve according to claim 3, characterized in that: The positive pressure balancing mechanism (4) comprises a second stopper (401) and a guide column (402), wherein the second stopper (401) is located inside the cavity (304), the diameter of the second stopper (401) is larger than the circular hole, a sealing ring is provided on the contact surface between the second stopper (401) and the circular hole, the guide column (402) is slidably connected to the inside of the guide hole (305), and a second spring (403) is provided between the second stopper (401) and the baffle (405).

5. A new type of pressure balancing valve according to claim 1, characterized in that: The regulating mechanism comprises a gasket cap (308) which is slidably connected to the valve shaft (302), a nut (309) is provided above the gasket cap (308), the nut (309) is threadedly connected to the valve shaft (302), and a first spring (307) is directly provided between the gasket cap (308) and the shaft sleeve (301).

6. A new type of pressure balancing valve according to claim 2, characterized in that: The valve body (1) is provided with a step (101) inside, the shaft sleeve (301) is placed on the step (101), the first stopper (303) is located below the step (101), and the platform (3031) fits the bottom of the step (101).

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