A kind of anti-corrosion bellows stop valve

Abstract

The utility model discloses an anti-corrosion bellows stop valve, which relates to the field of stop valves, including a valve body, a filter mechanism, a sealing mechanism and a control mechanism, wherein a filter mechanism is installed at one end of the valve body, a sealing mechanism is installed at one end of the valve body, and a control mechanism is installed at one end of the valve body. The utility model drives the lifting and lowering of the valve stem by operating the rotation of the gear control disk in the rotating groove through the valve body and the sealing mechanism, so that the sealing plug at the bottom of the valve stem can block or unlock the flow of the valve body, and the sealing effect of the sealing plug and the sealing pad can effectively prevent the liquid from overflowing and corroding the outer surface of the valve body. At the same time, an anti-corrosion layer is arranged on the outer surface of the valve stem and the inner surface of the valve body, so as to improve the corrosion resistance of the internal part of the device and the service life of the device.

Description

Technical Field

[0001] The utility model relates to the field of stop valves, in particular to an anti-corrosion bellows stop valve. Background Art

[0002] The stop valve is composed of a valve body, a valve cover, a valve cover gasket, a valve stem, etc. The stop valve is divided into four types according to the direction of the channel: a straight-through stop valve, a DC stop valve, an angle stop valve, and a plunger stop valve. It is widely used in chemical, pharmaceutical, light industry, papermaking, metallurgy, textile, natural gas, municipal engineering, food, shipbuilding, electric power and other industries. When in use, the handwheel is rotated to rotate the threaded guide sleeve, and the anti-rotation block limits the rotation of the valve stem. Therefore, the rotational motion of the handwheel is converted into an up and down linear motion of the valve stem. Relying on the valve stem pressure, the valve disc sealing surface and the valve seat sealing surface are closely fitted to prevent the flow of medium. During use, the connection between the valve stem and the valve body is prone to corrosion and rust, which affects the service life of the valve. Therefore, an anti-corrosion bellows stop valve is required.

[0003] The existing patent document with the technical disclosure number CN218913753U provides an anti-corrosion corrugated stop valve, including a valve housing, a valve stem is threadedly connected to the top of the valve housing, a valve disc is movably connected to the bottom of the valve stem through a bearing, a second rubber pad is fixedly connected to the upper end of the valve disc, connecting pipes are fixedly connected to both sides of the valve housing, a valve seat is fixedly connected to the middle end of the inner cavity of the valve housing, a guide hole is opened at the middle end of the valve seat, an annular cavity is opened around the valve seat, and an annular rubber sealing pad is fixedly connected to the lower end of the annular cavity. The utility model discloses the ... Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a corrosion-resistant bellows stop valve to solve the problem that the existing bellows stop valve cannot effectively improve the service life of the device, cannot effectively improve the stability of the device during use, and cannot improve the filtering performance of the device during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-corrosion bellows stop valve, comprising a valve body, a filter mechanism, a sealing mechanism and a control mechanism, wherein a filter mechanism is installed at one end of the valve body.

[0006] A sealing mechanism is installed at one end of the valve body.

[0007] A control mechanism is installed at one end of the valve body.

[0008] Preferably, the filtering mechanism comprises a mounting hole, a slot and a hard filter screen, a mounting hole is provided at one end of the valve body, a slot is provided at one end of the valve body, and a hard filter screen is installed at one end of the slot.

[0009] Preferably, the mounting holes are arranged in an array at the center of the valve body, and the hard filter screen is engaged and connected with the valve body through a slot.

[0010] Preferably, the sealing mechanism includes a threaded hole, a valve stem, a sealing plug, an anti-corrosion layer and a sealing gasket. A threaded hole is opened at the upper end of the valve body, a valve stem is installed at one end of the threaded hole, a sealing plug is installed at the lower end of the valve stem, an anti-corrosion layer is installed on the surface of the valve stem, and a sealing gasket is installed at one end of the valve stem.

[0011] Preferably, the valve stem is threadedly connected to the valve body, and the inner end surface of the sealing plug and the outer end surface of the valve stem are adhered to each other.

[0012] Preferably, the control mechanism includes a top bearing cover, a rotating groove, a gear control disk, a block and a slide groove. The top bearing cover is installed on the upper end of the valve body, a rotating groove is opened in the middle end of the top bearing cover, a gear control disk is installed at one end of the rotating groove, a block is installed at one end of the gear control disk, and a slide groove is opened at one end of the top bearing cover.

[0013] Preferably, the gear position control disk forms a rotating structure with the top bearing cover through a rotating groove, and the clamping block is engaged and connected with the gear position control disk through a sliding groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a valve body and a sealing mechanism, and drives the valve stem to rise and fall by operating the gear control disk to rotate in the rotating groove, so that the sealing plug at the bottom of the valve stem can seal or unlock the valve body to determine whether the flow is flowing. The sealing effect of the sealing plug and the sealing pad can effectively prevent the liquid from overflowing and corroding the outer surface of the valve body. At the same time, an anti-corrosion layer is provided on the outer surface of the valve stem and the inner surface of the valve body, which can improve the corrosion resistance of the device and the service life of the device.

[0016] The utility model provides a valve body and a control mechanism. When the valve body maintains a sealed or flowing working state for a long time, the vibration of the pipeline or the inadvertent contact of the outside world will pull the rotation of the gear control disk, affecting its use. The clamping block is moved forward in the slide groove to engage with the gear control disk, so as to fix the rotation angle of the gear control disk and improve the stability of the device.

[0017] The utility model connects the valve body to the delivery pipe flange through the installation hole by means of the valve body and the filtering mechanism, and a hard filter is arranged in the slot opened at one end of the water inlet of the valve body. The reversely installed hard filter effectively filters impurities in the liquid, and the pipe body and the hard filter are easy to clean after being taken out, thereby improving the filtering performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front cross-sectional view of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the filter mechanism of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the sealing mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the control mechanism of the utility model.

[0022] In the figure: 1. valve body; 2. filtering mechanism; 201. mounting hole; 202. card slot; 203. hard filter screen; 3. sealing mechanism; 301. threaded hole; 302. valve stem; 303. sealing plug; 304. anti-corrosion layer; 305. sealing pad; 4. control mechanism; 401. top bearing cover; 402. rotating groove; 403. gear control plate; 404. card block; 405. slide groove. 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-4, an anti-corrosion bellows stop valve, comprising a valve body 1, a filter mechanism 2, a sealing mechanism 3 and a control mechanism 4, a filter mechanism 2 is installed at one end of the valve body 1, the filter mechanism 2 comprises a mounting hole 201, a slot 202 and a hard filter screen 203, a mounting hole 201 is opened at one end of the valve body 1, a slot 202 is opened at one end of the valve body 1, a hard filter screen 203 is installed at one end of the slot 202, the mounting holes 201 are arranged in an array with the center of the valve body 1, and the hard filter screen 203 is connected to the valve body 1 through the slot 202, the valve body 1 is connected to the conveying pipeline flange through the mounting hole 201, and a hard filter screen 203 is arranged in the slot 202 opened at one end of the water inlet of the valve body 1, the reversely installed hard filter screen 203 effectively filters impurities in the liquid, and the pipe body and the hard filter screen 203 are easy to clean after being taken out, thereby improving the filtering performance of the device.

[0026] See also Figure 1-4 , an anti-corrosion bellows stop valve, a sealing mechanism 3 is installed at one end of the valve body 1, the sealing mechanism 3 includes a threaded hole 301, a valve stem 302, a sealing plug 303, an anti-corrosion layer 304 and a sealing gasket 305, a threaded hole 301 is opened at the upper end of the valve body 1, a valve stem 302 is installed at one end of the threaded hole 301, a sealing plug 303 is installed at the lower end of the valve stem 302, an anti-corrosion layer 304 is installed on the surface of the valve stem 302, a sealing gasket 305 is installed at one end of the valve stem 302, the valve stem 302 is threadedly connected to the valve body 1, and the inner end surface of the sealing plug 303 is in contact with the inner end surface of the valve stem 302 The outer end surfaces are adhered to each other, and the gear control disk 403 is operated to rotate in the rotating groove 402, thereby driving the valve stem 302 to rise and fall, so that the sealing plug 303 at the bottom of the valve stem 302 can block or unlock the flow of the valve body 1. The sealing plug 303 and the sealing gasket 305 enhance the sealing effect of the device, and effectively prevent liquid from overflowing and corroding and rusting the outer end surface of the valve body 1. At the same time, an anti-corrosion layer 304 is provided on the outer surface of the valve stem 302 and the inner end surface of the valve body 1 to enhance the corrosion resistance of the inside of the device and improve the service life of the device.

[0027] See also Figure 1-4A corrosion-resistant bellows stop valve, a control mechanism 4 is installed at one end of a valve body 1, and the control mechanism 4 includes a top cover 401, a rotating groove 402, a gear control disk 403, a block 404 and a slide groove 405. A top cover 401 is installed at the upper end of the valve body 1, a rotating groove 402 is opened at the middle end of the top cover 401, a gear control disk 403 is installed at one end of the rotating groove 402, a block 404 is installed at one end of the gear control disk 403, a slide groove 405 is opened at one end of the top cover 401, and the gear control disk 40 The rotating groove 402 and the top bearing cover 401 form a rotating structure, and the clamping block 404 is connected with the gear position control disk 403 through the sliding groove 405. When the valve body 1 maintains a sealed or flowing working state for a long time, the vibration of the pipeline or the inadvertent contact of the outside world will pull the rotation of the gear position control disk 403, affecting its use. The clamping block 404 is moved forward in the sliding groove 405 to be engaged with the gear position control disk 403, so as to fix the rotation angle of the gear position control disk 403 and improve the stability of the device.

[0028] Working principle: When in use, the valve body 1 is preferentially connected to the delivery pipe flange through the mounting hole 201, and a hard filter screen 203 is arranged in the card slot 202 opened at one end of the water inlet of the valve body 1. The reversely installed hard filter screen 203 effectively filters impurities in the liquid, and it is easy to clean the pipe body and the hard filter screen 203 after being taken out, thereby improving the filtering performance of the device. By operating the gear control disk 403 to rotate in the rotating slot 402, the valve stem 302 is driven to rise and fall, so that the sealing plug 303 at the bottom of the valve stem 302 can block or unlock the flow of the valve body 1. The sealing plug 303 and the sealing pad 305 improve the sealing effect of the device, effectively preventing liquid from overflowing and corroding the valve. The problem is that the outer surface of the door body 1 is solved. At the same time, an anti-corrosion layer 304 is provided on the outer surface of the valve stem 302 and the inner surface of the valve body 1 to improve the corrosion resistance of the internal part of the device and improve the service life of the device. When the valve body 1 maintains a sealed or flowing working state for a long time, the vibration of the pipeline or inadvertent contact from the outside will pull the rotation of the gear control disk 403, affecting its use. The block 404 is moved forward in the slide groove 405 to engage with the gear control disk 403, so as to fix the rotation angle of the gear control disk 403 and improve the stability of the device. In this way, the use process of the device is completed. The contents not described in detail in this manual belong to the prior art known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-corrosion bellows stop valve, comprising a valve body (1), a filtering mechanism (2), a sealing mechanism (3) and a control mechanism (4), characterized in that: A filter mechanism (2) is installed at one end of the valve body (1); A sealing mechanism (3) is installed at one end of the valve body (1); A control mechanism (4) is installed at one end of the valve body (1).

2. The anti-corrosion bellows stop valve according to claim 1, characterized in that: The filtering mechanism (2) comprises a mounting hole (201), a slot (202) and a hard filter screen (203); one end of the valve body (1) is provided with a mounting hole (201); one end of the valve body (1) is provided with a slot (202); and one end of the slot (202) is provided with a hard filter screen (203).

3. The anti-corrosion bellows stop valve according to claim 2, characterized in that: The mounting holes (201) are arranged in an array at the center of the valve body (1), and the hard filter screen (203) is snap-fitted and connected to the valve body (1) via the snap-fit ​​groove (202).

4. The anti-corrosion bellows stop valve according to claim 1, characterized in that: The sealing mechanism (3) comprises a threaded hole (301), a valve stem (302), a sealing plug (303), an anti-corrosion layer (304) and a sealing gasket (305); the upper end of the valve body (1) is provided with a threaded hole (301); one end of the threaded hole (301) is provided with a valve stem (302); the lower end of the valve stem (302) is provided with a sealing plug (303); the surface of the valve stem (302) is provided with an anti-corrosion layer (304); and one end of the valve stem (302) is provided with a sealing gasket (305).

5. The corrosion-resistant bellows stop valve according to claim 4, characterized in that: The valve stem (302) is threadedly connected to the valve body (1), and the inner end surface of the sealing plug (303) and the outer end surface of the valve stem (302) are adhered to each other.

6. The anti-corrosion bellows stop valve according to claim 1, characterized in that: The control mechanism (4) comprises a top bearing cover (401), a rotating groove (402), a gear position control disk (403), a clamping block (404) and a sliding groove (405); the top bearing cover (401) is mounted on the upper end of the valve body (1); the middle end of the top bearing cover (401) is provided with a rotating groove (402); one end of the rotating groove (402) is mounted with a gear position control disk (403); one end of the gear position control disk (403) is mounted with a clamping block (404); and one end of the top bearing cover (401) is provided with a sliding groove (405).

7. The anti-corrosion bellows stop valve according to claim 6, characterized in that: The gear position control disk (403) forms a rotating structure with the top support cover (401) via the rotating groove (402), and the clamping block (404) is clamped and connected with the gear position control disk (403) via the sliding groove (405).

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