Pressure vacuum release valve capable of preventing dust from diffusing

Abstract

The pressure vacuum relief valve comprises a valve body, the bottom and the top of the valve body are each of an open structure, the top of the valve body is movably connected with a top cover, and the left side and the right side of the top of the valve body are each provided with a movable groove. Through mutual cooperation of the valve body, the top cover, the movable groove, the guide block, the movable rod, a supporting spring, a dustproof assembly, a sleeve, a first filter screen, a dust collection box, a second filter screen, a dust suction pipe, a dust suction cover, an air suction pump and an air suction pipe, the effect of preventing dust diffusion is achieved, when air pressure is discharged outwards, dust in air can be cleaned, and the dust removal effect is good. Dust is prevented from being discharged and diffused towards the outside of the valve body along with air, and therefore the surrounding environment can be effectively prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vacuum release valves, in particular to a pressure vacuum release valve that blocks dust diffusion. Background Art

[0002] The vacuum pressure relief valve is a protective device used on the top of powder and granular storage silos in industries such as thermal power generation, building materials, metallurgy, and chemical industry. It protects the storage silos from excessive positive and negative pressure during inflation and exhaust and abnormal temperature changes.

[0003] At present, as shown in the patent application number CN202321940015.7, the utility model discloses a pressure vacuum release valve, including a valve body, an exhaust pipe arranged on the valve body, and a top cover arranged on the upper end of the exhaust pipe, a limiting support plate is arranged above the top cover, and the limiting support plate is connected to the exhaust pipe. It also includes an adjusting component arranged on the support plate for adjusting the release pressure of the top cover, and a buffer component arranged in the middle of the exhaust pipe for buffering the pressure.

[0004] However, in actual use, the above patented pressure vacuum release valve has the following defects: when the air pressure is discharged outward, the dust in the air cannot be cleaned, which causes the dust to be discharged and diffused to the outside of the valve body along with the air, greatly polluting the surrounding environment. For this reason, we propose a pressure vacuum release valve that prevents dust from spreading. Utility Model Content

[0005] The utility model aims to provide a pressure vacuum release valve for preventing dust from spreading, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a pressure vacuum release valve for preventing dust diffusion, comprising:

[0007] A valve body, wherein the bottom and the top of the valve body are both open structures;

[0008] A top cover, the top of the valve body is movably connected to the top cover;

[0009] Movable grooves, the top left and right sides of the valve body are provided with movable grooves;

[0010] A guide block is movably connected to the lower part of the movable groove;

[0011] A movable rod, the top of the guide block is fixedly connected with the movable rod, the top of the movable rod is fixedly connected to the bottom of the top cover, and the surface of the movable rod is sleeved with a support spring;

[0012] A dustproof component is arranged on the valve body, and the dustproof component includes a sleeve, a first filter, a dust collecting box, a second filter, a dust suction pipe, a dust suction hood, an air pump and an air suction pipe. A sleeve is fixed on the surface of the valve body, a door body is installed on the front side of the sleeve, and the top of the sleeve is an open structure.

[0013] Furthermore, a first filter is fixedly installed on the upper part of the sleeve, and dust boxes are fixedly connected to the lower parts of both left and right sides of the sleeve.

[0014] Furthermore, a box door is installed on the front side of the dust box, and a second filter is fixedly installed on the inner wall of the dust box.

[0015] Furthermore, the top of the dust collecting box is fixedly connected with a dust suction pipe, and one end of the dust suction pipe away from the dust collecting box passes through the sleeve and extends to the inside of the sleeve and is fixedly connected with a dust suction hood.

[0016] Furthermore, an air pump is fixedly connected to the bottom of the dust collecting box on a side away from the sleeve, and an air extraction pipe is fixedly connected to the side of the air extraction pump close to the sleeve.

[0017] Furthermore, one end of the air extraction pipe away from the air extraction pump passes through the dust collecting box and extends to the interior of the dust collecting box.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model achieves the effect of blocking the diffusion of dust through the cooperation of the valve body, the top cover, the movable groove, the guide block, the movable rod, the supporting spring, the dust-proof component, the sleeve, the first filter screen, the dust collecting box, the second filter screen, the dust suction pipe, the dust suction hood, the air pump and the air suction pipe. When the air pressure is discharged outwards, the dust in the air can be cleaned to prevent the dust from being discharged and diffused to the outside of the valve body along with the air, thereby effectively avoiding pollution of the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view structural schematic diagram of the utility model;

[0021] Figure 2 It is a front view structural cross-sectional view of the utility model;

[0022] Figure 3 This is a structural cross-sectional view of the valve body of the utility model;

[0023] Figure 4 It is a schematic diagram of the top view of the casing of the utility model.

[0024] In the figure: 1. valve body; 2. top cover; 3. movable groove; 4. guide block; 5. movable rod; 6. support spring; 7. dustproof component; 701. sleeve; 702. first filter; 703. dust collecting box; 704. second filter; 705. dust suction pipe; 706. dust suction hood; 707. vacuum pump; 708. vacuum pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0028] See also Figure 1-4A pressure vacuum release valve for preventing dust from spreading comprises a valve body 1, the bottom and top of the valve body 1 are both open structures, the top of the valve body 1 is movably connected with a top cover 2, movable grooves 3 are provided on both sides of the top of the valve body 1, a guide block 4 is movably connected to the lower part of the movable groove 3, a movable rod 5 is fixedly connected to the top of the guide block 4, the top of the movable rod 5 is fixedly connected to the bottom of the top cover 2, a support spring 6 is sleeved on the surface of the movable rod 5, a dustproof component 7 is arranged on the valve body 1, the dustproof component 7 comprises a sleeve 701, a first filter screen 702, a dust collecting box 703, a second filter screen 704, a dust suction pipe 705, a dust suction cover 706, an air pump 707 and an air suction pipe 708, a sleeve 701 is fixedly sleeved on the surface of the valve body 1, a door body is installed on the front side of the sleeve 701, and the top of the sleeve 701 is an open structure.

[0029] During specific implementation, a first filter screen 702 is fixedly installed on the upper part of the sleeve 701 , and dust collecting boxes 703 are fixedly connected to the lower parts of both left and right sides of the sleeve 701 .

[0030] Specifically, a box door is installed on the front side of the dust box 703, and a second filter screen 704 is fixedly installed on the inner wall of the dust box 703.

[0031] In specific implementation, the top of the dust box 703 is fixedly connected with a dust suction pipe 705 , and one end of the dust suction pipe 705 away from the dust box 703 passes through the sleeve 701 and extends to the inside of the sleeve 701 and is fixedly connected with a dust suction cover 706 .

[0032] Specifically, the bottom of the dust box 703 away from the sleeve 701 is fixedly connected to an air pump 707 , and the side of the air pump 707 close to the sleeve 701 is fixedly connected to an air extraction pipe 708 .

[0033] During specific implementation, one end of the air extraction pipe 708 away from the air extraction pump 707 penetrates the dust collecting box 703 and extends to the interior of the dust collecting box 703 .

[0034] In actual application: when in use, the device is welded to a suitable position on the top of the storage bin, and the vacuum pump 707 is started. When the pressure inside the valve body 1 is too high, the air pressure impacts upward, pushing the top cover 2 upward, and compressing the support spring 6 at the same time. The air pressure is discharged to the inside of the sleeve 701, and then the air passes through the first filter 702 and is discharged from the sleeve 701. At the same time, the dust in the air is intercepted by the first filter 702 and the pressure is released. At the same time, the air pump 707 draws the air inside the dust box 703, thereby generating a negative pressure inside the dust box 703, and then the dust inside the sleeve 701 is absorbed by the dust hood 706, and then the dust is transported to the dust box 703 to prevent the dust from spreading. After the air pressure returns to the normal range, under the rebound action of the support spring 6, the top cover 2 is moved down to continue to seal the valve body 1.

[0035] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and drawings. The specific connection method of each component adopts conventional means such as mature bolts, rivets, welding, etc. in the prior art, and machinery, parts and equipment adopt conventional models in the prior art.

[0036] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle, and the electrical connection between the electrical components should be completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The utility model mainly introduces the working principle and process, and no longer explains the electrical control.

[0037] 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 pressure vacuum release valve for preventing dust diffusion, characterized in that: include: A valve body (1), wherein the bottom and the top of the valve body (1) are both open structures; A top cover (2), the top of the valve body (1) being movably connected to the top cover (2); A movable groove (3), wherein the left and right sides of the top of the valve body (1) are both provided with movable grooves (3); A guide block (4), the lower portion of the movable groove (3) being movably connected with the guide block (4); A movable rod (5), the top of the guide block (4) is fixedly connected with the movable rod (5), the top of the movable rod (5) is fixedly connected to the bottom of the top cover (2), and the surface of the movable rod (5) is sleeved with a support spring (6); A dustproof component (7), wherein the valve body (1) is provided with a dustproof component (7), and the dustproof component (7) comprises a sleeve (701), a first filter (702), a dust collecting box (703), a second filter (704), a dust suction pipe (705), a dust suction hood (706), an air pump (707) and an air suction pipe (708); a sleeve (701) is fixedly sleeved on the surface of the valve body (1), a door body is installed on the front side of the sleeve (701), and the top of the sleeve (701) is an open structure.

2. A pressure vacuum release valve for preventing dust diffusion according to claim 1, characterized in that: A first filter screen (702) is fixedly installed on the upper part of the sleeve (701), and dust collection boxes (703) are fixedly connected to the lower parts of both left and right sides of the sleeve (701).

3. A pressure vacuum release valve for preventing dust diffusion according to claim 2, characterized in that: A box door is installed on the front side of the dust collecting box (703), and a second filter screen (704) is fixedly installed on the inner wall of the dust collecting box (703).

4. A pressure vacuum release valve for preventing dust diffusion according to claim 3, characterized in that: The top of the dust collecting box (703) is fixedly connected to a dust suction pipe (705), and one end of the dust suction pipe (705) away from the dust collecting box (703) passes through the sleeve (701) and extends to the inside of the sleeve (701) and is fixedly connected to a dust suction cover (706).

5. A pressure vacuum release valve for preventing dust diffusion according to claim 4, characterized in that: An air pump (707) is fixedly connected to the bottom of the dust collecting box (703) at a side away from the sleeve (701), and an air extraction pipe (708) is fixedly connected to the side of the air extraction pump (707) close to the sleeve (701).

6. A pressure vacuum release valve for preventing dust diffusion according to claim 5, characterized in that: One end of the air extraction pipe (708) away from the air extraction pump (707) passes through the dust collecting box (703) and extends to the interior of the dust collecting box (703).

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