Novel dedusting blind plate valve

Abstract

The utility model discloses a novel dedusting blind plate valve, which relates to the technical field of blind plate valves and comprises a valve body, a filter screen device, a blind plate, a blind plate groove, a limiting device, a sealing ring and a plurality of clamping and loosening devices. A through hole is formed in the blind plate, limiting devices are symmetrically arranged on the two sides of the through hole, and the valve body is connected with the blind plate through the through hole and then fixed through the clamping and loosening device. A through blind plate groove is formed in one side of the blind plate, sealing rings are arranged at the two ends of the blind plate groove, and sealing rings are also arranged at the symmetrical positions of the other side of the blind plate. A filter screen device is installed in the blind plate groove and comprises a coarse filter screen, a fine filter screen and a filter screen protection net.

Description

Technical Field

[0001] The utility model belongs to the technical field of blind plate valves, in particular to a novel dust removal blind plate valve. Background Art

[0002] Blind valve is a gate valve that cuts off gas medium manually, electrically, pneumatically or hydraulically. It is generally divided into electric blind valve, hydraulic blind valve, pneumatic blind valve and manual blind valve. It is especially suitable for absolute cutting off of harmful, toxic and flammable gases. It is installed at the air inlet and outlet of the gas compressor unit to provide safety protection for the maintenance of the compressor unit. The existing blind valve has a single function and only has the function of cutting off gas. When the gas contains a large amount of dust or tar, such as converter gas and coke oven gas, it will cause a large amount of dust to adhere to the compressor rotor, causing the dynamic balance of the compressor rotor to fail, resulting in large vibration of the compressor and frequent maintenance. Utility Model Content

[0003] The purpose of the utility model is to provide a novel dust removal blind plate valve, which is used to solve at least one aspect of the technical problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A new dust removal blind plate valve, comprising a valve body, a filter device, a blind plate, a blind plate groove, a limit device, a sealing ring, and a plurality of clamping and releasing devices;

[0006] The blind plate is provided with a through hole, and limit devices are symmetrically provided on both sides of the through hole. The valve body is connected to the blind plate through the through hole through a clamping and releasing device, and then fixed by a rotating fixing device.

[0007] A through blind plate groove is provided on one side of the blind plate, sealing rings are provided at both ends of the blind plate groove, and sealing rings are also provided at symmetrical positions on the other side of the blind plate;

[0008] A filter device is installed in the blind plate groove, and the filter device includes a coarse filter, a fine filter and a filter protection net.

[0009] As a further solution of the utility model, the function of the limit device is to mark the position where the blind plate needs to reach when opening and closing the blind plate valve to prevent misalignment.

[0010] As a further solution of the present invention, the thickness of the filter device is smaller than the thickness of the blind plate groove.

[0011] As a further solution of the utility model, the coarse filter is arranged on a side of the blind plate valve close to the air inlet end.

[0012] As a further solution of the present invention, the pore size of the coarse filter is 3 mm to 10 mm.

[0013] As a further solution of the utility model, the aperture of the fine filter is less than or equal to 3 mm.

[0014] As a further solution of the utility model, the pore size of the filter protection net is 10mm to 50mm.

[0015] As a further solution of the utility model, a plurality of filter screen fixing devices are arranged in the blind plate groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model filters the larger dust particles in the airway through a three-layer filter device to prevent a large amount of dust from entering the compressor unit and adhering to the compressor rotor, thereby destroying the dynamic balance of the rotor.

[0018] 2. The utility model limits the movable range through the limit device. When the limit devices at both ends touch the valve body, it means that the valve has been moved to the open or closed position. At this time, the blind plate can be fixed by the clamping release device and the rotating fixing device to prevent the blind plate from being misplaced.

[0019] 3. The filter device of the utility model can be quickly disassembled and installed through the filter fixing device, which is convenient for subsequent maintenance and replacement of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a structural diagram of a new type of dust removal blind plate valve;

[0022] Figure 2 It is a structural schematic diagram of the filter device of the new dust removal blind plate valve;

[0023] Figure 3 This is a schematic diagram of the structure of the blind plate of the new dust removal blind plate valve after the filter device is installed.

[0024] In the figure: 100, valve body; 110, clamping and releasing device; 120, blind plate; 130, sealing ring; 140, filter screen fixing device; 150, filter screen device; 160, limiting device; 170, rotation fixing device; 180, through hole; 200, coarse filter screen; 210, fine filter screen; 220, filter screen protection screen; 230, blind plate groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] The present invention is limited only by the claims and their full scope and equivalents. 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 at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 an indirect connection 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.

[0029] See also Figure 1 to Figure 3 In the embodiment of the utility model, the new dust removal blind plate valve includes a valve body 100, a filter device 150, a blind plate 120, a blind plate groove 230, a limit device 160, a sealing ring 130, and three clamping and releasing devices 110;

[0030] The blind plate 120 is provided with a through hole 180, and the limiting devices 160 are symmetrically arranged on both sides of the through hole 180. The valve body 100 is connected to the blind plate 120 through a clamping and releasing device 110 passing through the through hole 180, and then fixed by a rotating fixing device 170.

[0031] A through blind plate groove 230 is provided on one side of the blind plate 120, and sealing rings 130 are provided at both ends of the blind plate groove 230, and sealing rings 130 are also provided at symmetrical positions on the other side of the blind plate 120;

[0032] A filter device 150 is installed in the blind plate groove 230 , and the filter device 150 includes a coarse filter 200 , a fine filter 210 and a filter protection net 220 .

[0033] like Figure 2 As shown, the arrow indicates the direction of gas passing. When the gas passes through the filter device 150, it first passes through the coarse filter 200. The pore size of the coarse filter 200 is relatively large, and the larger dust in the gas is filtered once.

[0034] In some preferred embodiments, when there is a lot of dust in the gas and the filter is easily blocked, the filter device 150 can be made into other shapes and sizes, such as a semicircle, which occupies half the size of the blind circle, and only filters part of the gas passing through the blind plate valve, allowing the other half of the gas to pass through the valve body completely, so as to prevent the filter from being blocked and not replaced and cleaned in time, resulting in no air intake at the compressor inlet, causing the compressor to surge;

[0035] The fine filter 210 is the main filtering device, which has a smaller pore size and can filter out most of the larger dust particles. The pore sizes of the coarse filter 200 and the fine filter 210 need to be selected according to the size of the dust in the gas pipeline;

[0036] The filter protection net 220 has the largest aperture and cannot filter dust. It is used to prevent the coarse filter and fine filter from accidentally breaking and entering the compressor, causing equipment accidents.

[0037] The coarse filter 200, the fine filter 210 and the filter protection net 220 are all made of stainless steel to prevent rust.

[0038] As a further solution of the utility model, the function of the limit device 160 is to mark the position where the blind plate 120 needs to reach when opening and closing the blind plate valve to prevent misalignment.

[0039] As a further solution of the present invention, the thickness of the filter device 150 is smaller than the thickness of the blind plate groove 230 .

[0040] As a further solution of the present invention, the coarse filter 200 is arranged on a side of the blind plate valve close to the air inlet end.

[0041] As a further solution of the present invention, the pore size of the coarse filter 200 is 7 mm.

[0042] As a further solution of the present invention, the aperture of the fine filter 210 is 2 mm.

[0043] As a further solution of the present invention, the pore size of the filter protection net 220 is 30 mm.

[0044] As a further solution of the present invention, four filter screen fixing devices 140 are arranged in the blind plate groove 230 .

[0045] The working principle of the utility model is: loosen the clamping and releasing device, and move the blind plate so that the limit device on the blind plate touches the valve body, which means that it has been moved to the open or closed position. At this time, clamp the clamping and releasing device again, and the sealing effect is achieved through the close contact between the sealing ring and the valve body;

[0046] When in the closed position, the passage on the valve body is blocked by the blind plate and the gas cannot pass through; when in the open position, the gas passes through the filter device through the valve body and the larger dust particles in the gas are blocked by the filter device.

[0047] The filter device of the utility model can be quickly disassembled and installed through the filter fixing device, which is convenient for subsequent maintenance and replacement of the filter device; in some preferred embodiments, a pressure difference sensor is installed on the blind plate valve to detect the gas pressure difference before and after the filter device. When the pressure difference is large, the filter device needs to be replaced or cleaned in time.

[0048] In this embodiment, the rotation of the clamping and releasing device and the blind plate are both manual actuators. The clamping and releasing device is specifically composed of a middle screw and two nuts at both ends of the screw. The two ends of the clamping and releasing device can be clamped or loosened by rotating the nuts.

[0049] The rotating fixing device is a nut set in the middle of the screw. Loosening it can make the blind plate rotate freely, and tightening it can fix the blind plate.

[0050] The principle of the present invention is equally applicable to electric, hydraulic or pneumatic devices.

[0051] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. The new dust removal blind plate valve is characterized by: It comprises a valve body (100), a filter screen device (150), a blind plate (120), a blind plate groove (230), a limit device (160), a sealing ring (130), and a plurality of clamping and releasing devices (110); The blind plate (120) is provided with a through hole (180), and limit devices (160) are symmetrically provided on both sides of the through hole (180); the valve body (100) is connected to the blind plate (120) through the through hole (180) via a clamping and releasing device (110), and then fixed via a rotating fixing device (170); A through blind plate groove (230) is provided on one side of the blind plate (120), sealing rings (130) are provided at both ends of the blind plate groove (230), and sealing rings (130) are also provided at symmetrical positions on the other side of the blind plate (120); A filter screen device (150) is installed in the blind plate groove (230), and the filter screen device (150) comprises a coarse filter screen (200), a fine filter screen (210), and a filter screen protection screen (220).

2. The new dust removal blind plate valve according to claim 1 is characterized in that: The function of the position limiting device (160) is to mark the position that the blind plate (120) needs to reach when opening and closing the blind plate valve, so as to prevent misalignment.

3. The new dust removal blind plate valve according to claim 1 is characterized in that: The thickness of the filter screen device (150) is smaller than the thickness of the blind plate groove (230).

4. The new dust removal blind plate valve according to claim 1 is characterized in that: The coarse filter (200) is arranged on a side of the blind plate valve close to the air inlet end.

5. The new dust removal blind plate valve according to claim 4 is characterized in that: The pore size of the coarse filter (200) is 3 mm to 10 mm.

6. The new dust removal blind plate valve according to claim 1 is characterized in that: The aperture of the fine filter (210) is less than or equal to 3 mm.

7. The new dust removal blind plate valve according to claim 1 is characterized in that: The pore size of the filter protection net (220) is 10 mm to 50 mm.

8. The new dust removal blind plate valve according to claim 1 is characterized in that: A plurality of filter screen fixing devices (140) are arranged in the blind plate groove (230).

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