Dustproof fixed ball valve

Abstract

The utility model provides a dustproof fixed ball valve relates to ball valve technical field, including fixed ball valve body, the top of fixed ball valve body is equipped with rotary valve stem, the rotary valve stem is used for opening or closing fixed ball valve body, dust processing cleaning mechanism sets up in the top of fixed ball valve body and is located rotary valve stem's outside, including dust collection spare, mounting and cleaning spare, dust collection spare fixed setting in the top of fixed ball valve body, the mounting is fixed setting in the top of dust collection spare, and cleaning spare (sweeps brush) initiative cleaning surface dust with valve stem rotation, cooperation rubber band guide, dust is high -efficiently introduced into dust collection groove, avoids the valve stem jam, abrasion caused by dust accumulation, mounting (fixed seat + threaded connection) supports cleaning spare quick dismounting, and the opening of dust collection groove can directly adapt external ordinary dust catcher suction head after dismounting.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a dustproof fixed ball valve. Background Technology

[0002] Fixed ball valves, as key equipment for controlling the flow of media in industrial pipeline systems, are widely used in dusty environments such as chemical, mining, and coal powder transportation. Their core function is to open and close the flow channel by driving the ball to rotate via the valve stem. However, in environments with severe dust pollution, external dust can easily penetrate the valve stem gap and pipeline flanges, causing problems such as valve stem jamming, sealing surface wear, and dust leakage at flange connections, seriously affecting the valve's reliability and service life.

[0003] Existing dustproof fixed ball valve designs mostly focus on a single sealing structure for the valve stem or flange (such as ordinary dust rings or single-flange seals), which has the following drawbacks:

[0004] Firstly, the valve stem has weak dustproof capability: traditional passive dustproof structures (such as rubber sealing rings) are prone to losing elasticity due to dust accumulation, resulting in dustproof failure; accumulated dust is difficult to clean, and long-term accumulation will aggravate valve stem wear and even cause operation jamming.

[0005] Secondly, the pipeline connection has poor sealing performance: the flange seal relies only on bolt tightening and a single sealing element. Dust can easily enter from the sealing gap, which not only damages the sealing performance, but also causes blockage of the valve body flow channel due to dust entering the pipeline.

[0006] Therefore, we propose a dustproof fixed ball valve. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as weak dustproof capability of valve stems: traditional passive dustproof structures (such as rubber sealing rings) are prone to losing elasticity due to dust accumulation, leading to dustproof failure; accumulated dust is difficult to clean, and long-term accumulation will aggravate valve stem wear and even cause operational jamming; poor sealing performance of pipeline connections: flange seals rely solely on bolt tightening and single-channel sealing elements, and dust can easily intrude from the sealing gaps, not only damaging the sealing performance but also causing blockage of the valve body flow channel due to dust entering the pipeline.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A dustproof fixed ball valve includes: a fixed ball valve body, with a rotating valve stem at the top of the fixed ball valve body for opening or closing the fixed ball valve body; a dust handling and cleaning mechanism, disposed at the top of the fixed ball valve body and located outside the rotating valve stem, including a dust collection component, an installation component, and a cleaning component; the dust collection component is fixedly disposed at the top of the fixed ball valve body, the installation component is fixedly disposed at the top of the dust collection component, and the cleaning component is threadedly installed inside the installation component; the cleaning component is used to clean dust on the outer surface of the rotating valve stem when the rotating valve stem rotates; the dust collection component is used to collect the cleaned dust; the installation component is used to install the cleaning component and can detach the cleaning component to perform negative pressure adsorption and concentration of dust inside the dust collection component; two valve pipe bodies, fixedly disposed on both sides of the fixed ball valve body; and two external pipe bodies, disposed on both sides of the two valve pipe bodies.

[0010] Two pipe dust sealing structures are installed between two valve pipe bodies and two external pipe bodies. The structures include a fixed connection seal, a flange connection seal, and an auxiliary barrier. The fixed connection seal is used to seal between the valve pipe body and the external pipe body. The flange connection seal is used to fix the valve pipe body and the external pipe body and further seal them. The auxiliary barrier is installed between the flange connection seals to block dust.

[0011] As a preferred embodiment of this utility model, the dust collection component includes: a fixed sleeve, which is fixedly disposed on the top of the fixed ball valve body; a through groove, which is opened in the center inside the fixed sleeve for installing the rotating valve stem; a dust collection groove, which is opened on the top of the dust collection groove and located outside the through groove for collecting and storing dust; and a rubber strip, which is disposed above the through groove and fits against the rotating valve stem for further blocking dust and guiding dust into the dust collection groove.

[0012] As a preferred embodiment of this utility model, the mounting component includes: a fixing seat, which is fixedly disposed on the top of the fixing sleeve; and a threaded groove, which is formed on the top of the fixing seat.

[0013] As a preferred embodiment of this utility model, the cleaning component includes: a mounting sleeve; a threaded seat, which is fixedly disposed at the bottom of the mounting sleeve and rotatably threadedly connected to the threaded groove; and a cleaning brush, which is fixedly disposed inside the mounting sleeve for cleaning dust from the outer surface of the rotating valve stem.

[0014] As a preferred embodiment of this utility model, the fixed connection sealing element includes: a pipe sealing groove, which is formed on the outer wall of the valve pipe body; and a pipe sealing plate, which is fixedly set on the inner wall of the external pipe body and is used to be inserted into the inside of the pipe sealing groove to form a seal.

[0015] As a preferred embodiment of this utility model, the flange connection sealing element includes: a first flange, fixedly disposed on the outer surface of the valve pipe body; a flange sealing groove, formed on the inner wall of the first flange and near the outer side; a second flange, fixedly disposed on the outer surface of the external pipe body; a flange sealing plate, fixedly disposed on the inner wall of the second flange, for insertion into the flange sealing groove to form a seal; a plurality of connecting holes, all formed at the first flange and the second flange; and a plurality of sealing bolts, all disposed inside the plurality of connecting holes, for locking the first flange and the second flange.

[0016] As a preferred embodiment of this utility model, the auxiliary barrier includes: a groove formed on the outer wall of the second flange and the first flange; and a rubber locking sealing strip fitted onto the groove to further seal the gap at the connection between the second flange and the first flange.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, the cleaning component (cleaning brush) actively cleans the surface dust as the valve stem rotates. With the help of a rubber belt, the dust is efficiently guided into the dust collection trough, avoiding valve stem jamming and wear caused by dust accumulation. The mounting component (fixed base + threaded connection) supports quick disassembly of the cleaning component. After disassembly, the opening of the dust collection trough can be directly adapted to an external ordinary vacuum cleaner head (no custom interface required). The dust accumulated in the trough can be quickly sucked out using commonly used equipment on site, making operation extremely simple and significantly reducing the maintenance threshold.

[0019] By utilizing the layered sealing design of the pipeline dust sealing structure, the dust leakage problem of flange connections is systematically solved. The inner layer seals, with the pipe sealing groove and the sealing plate interlocking, firstly prevent dust from entering the valve body flow channel from the pipe interface. The middle layer seals, with the first and second flanges locked together by the sealing groove, sealing plate, and bolts, enhances the connection sealing performance. The outer layer protects against dust, with a rubber locking sealing strip fitted into the groove to fill the tiny gaps at the flange connection, forming a third barrier. This triple sealing layer significantly improves the dustproof capability of the pipeline connection, protects the internal sealing surface of the valve body, and extends the service life of the valve. Attached Figure Description

[0020] Figure 1 A schematic diagram of the main structure of a dustproof fixed ball valve provided by this utility model;

[0021] Figure 2 A first-view schematic diagram of the pipeline dust sealing structure of a dustproof fixed ball valve provided by this utility model;

[0022] Figure 3 A second-view schematic diagram of the pipeline dust sealing structure of a dustproof fixed ball valve provided by this utility model;

[0023] Figure 4 A schematic diagram of the dust handling and cleaning mechanism for a dustproof fixed ball valve provided by this utility model;

[0024] Figure 5 A schematic cross-sectional view of the main body structure of a dustproof fixed ball valve provided by this utility model;

[0025] Figure 6 This utility model provides a dustproof fixed ball valve. Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 7 This utility model provides a dustproof fixed ball valve. Figure 5 Enlarged schematic diagram of the structure at point B.

[0027] Legend: 10. Fixed ball valve body; 20. Rotating valve stem; 30. Dust handling and cleaning mechanism; 301. Fixed sleeve; 302. Through groove; 303. Dust collection groove; 304. Rubber strip; 305. Fixed seat; 306. Threaded groove; 307. Mounting sleeve; 308. Threaded seat; 309. Cleaning brush; 40. Valve pipe body; 50. Pipe dust sealing structure; 501. Pipe sealing groove; 502. First flange; 503. Flange sealing groove; 504. Pipe sealing plate; 505. Flange sealing plate; 506. Connecting hole; 507. Sealing bolt; 508. Groove; 509. Rubber locking sealing strip; 510. Second flange; 60. External pipe body. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example

[0033] like Figure 1-7 As shown, this utility model provides a technical solution: a dustproof fixed ball valve, including: a fixed ball valve body 10, and a rotating valve stem 20 on the top of the fixed ball valve body 10, the rotating valve stem 20 being used to open or close the fixed ball valve body 10;

[0034] The dust handling and cleaning mechanism 30 is set on the top of the fixed ball valve body 10 and located outside the rotating valve stem 20. It includes a dust collection component, an installation component, and a cleaning component. The dust collection component is fixedly set on the top of the fixed ball valve body 10, the installation component is fixedly set on the top of the dust collection component, and the cleaning component is threadedly installed inside the installation component. The cleaning component is used to clean the dust on the outer surface of the rotating valve stem 20 when the rotating valve stem 20 rotates. The dust collection component is used to collect the dust that has been cleaned. The installation component is used to install the cleaning component and can be disassembled to perform negative pressure adsorption and concentration of dust inside the dust collection component.

[0035] Two valve pipe bodies 40 are fixedly installed on both sides of the fixed ball valve body 10;

[0036] Two external pipe bodies 60 are installed on both sides of the two valve pipe bodies 40;

[0037] Two pipe dust sealing structures 50 are disposed between two valve pipe bodies 40 and two external pipe bodies 60. They include fixed connection seals, flange connection seals and auxiliary barrier components. The fixed connection seals are used to seal between the valve pipe bodies 40 and the external pipe bodies 60. The flange connection seals are used to fix the valve pipe bodies 40 and the external pipe bodies 60 and further seal them. The auxiliary barrier components are disposed between the flange connection seals to block dust.

[0038] When the rotating valve stem 20 operates to open or close the fixed ball valve body 10, the cleaning component of the dust handling and cleaning mechanism 30 moves synchronously with the valve stem, continuously brushing the dust on the outer surface of the valve stem. The dust is guided by the rubber belt 304 and falls into the dust collection tank 303 for temporary storage. After the cleaning component is disassembled, the external vacuum cleaner can directly suck and clean the opening of the collection tank. When the pipeline is connected, the valve pipeline body 40 is connected to the external pipeline body 60. The fixed connection sealing component is first inserted into the pipeline sealing groove 501 through the pipeline sealing plate 504 to form an inner layer seal. The flange connection sealing component locks the first flange 502 and the second flange 510 with the sealing bolts 507 to strengthen the axial seal. The rubber locking sealing strip 509 of the auxiliary barrier component is inserted into the groove 508 to fill the radial gap of the flange. The triple structure works together to block dust intrusion and leakage.

[0039] Dust collection components include:

[0040] The fixed sleeve 301 is fixedly installed on the top of the fixed ball valve body 10;

[0041] A through groove 302 is formed at the center inside the fixed sleeve 301 for installing the rotating valve stem 20;

[0042] Dust collection trough 303 is provided at the top of the dust collection trough 303 and is located outside the through groove 302, for collecting and storing dust;

[0043] A rubber strip 304 is positioned above the through groove 302 and fits against the rotating valve stem 20 to further block dust and guide it into the dust collection groove 303.

[0044] The fixed sleeve 301 provides rigid support for the dust collection component, and the through groove 302 ensures that the axial insertion and circumferential rotation of the rotating valve stem 20 are unrestricted. When the valve stem rotates, the surface dust is scraped off by the rubber strip 304. The rubber strip 304, due to its contact with the valve stem, forms an inclined contact surface, which guides the dust radially to the outer dust collection groove 303. This not only prevents the dust from penetrating downward into the valve body, but also achieves centralized collection of the dust, preventing the dust from scattering in the valve stem gap.

[0045] The mounting components include:

[0046] The fixing seat 305 is fixedly installed on the top of the fixing sleeve 301;

[0047] The threaded groove 306 is formed on the top of the fixed seat 305.

[0048] The mounting base 305 receives the top mounting surface of the mounting sleeve 301. The threaded groove 306 on the base is adapted to the threaded seat 308 of the cleaning component. During installation, the threaded seat 308 is screwed into the threaded groove 306 to fix the cleaning component stably and ensure the brushing pressure of the cleaning brush 309 on the valve stem. During disassembly, the cleaning component is screwed in the opposite direction to expose the dust collection groove 303, providing an open interface for subsequent cleaning operations without the need for additional tools.

[0049] Cleaning items include:

[0050] Install sleeve 307;

[0051] The threaded seat 308 is fixedly installed at the bottom of the mounting sleeve 307 and is rotatably threaded into the threaded groove 306;

[0052] The cleaning brush 309 is fixedly installed inside the mounting sleeve 307 and is used to remove dust from the outer surface of the rotating valve stem 20.

[0053] The mounting sleeve 307 provides a mounting frame for the cleaning brush 309. The bottom threaded seat 308 engages with the threaded groove 306 of the fixed seat 305, realizing a detachable connection of the cleaning components. When the valve stem 20 is rotated, since the cleaning brush 309 is fixed inside the mounting sleeve 307, and the mounting sleeve is fixed, the valve stem will contact the cleaning brush 309 when it rotates, thereby cleaning the valve stem (because the threaded connection has circumferential limiting, there is no relative circumferential sliding between the brush body and the valve stem). The bristles continuously brush the outer surface of the valve stem, removing the attached dust. The removed dust falls into the dust collection trough 303 under the guidance of the rubber belt 304 for collection.

[0054] Fixed connection seals include:

[0055] Pipe sealing groove 501 is formed on the outer wall of valve pipe body 40;

[0056] The pipe sealing plate 504 is fixedly installed on the inner side wall of the external pipe body 60 and is used to insert into the inside of the pipe sealing groove 501 to form a seal.

[0057] When the valve pipe body 40 is connected to the external pipe body 60, the pipe sealing plate 504 of the external pipe body 60 is aligned with the pipe sealing groove 501 of the valve pipe body 40 and inserted, forming a nested sealing structure. This structure directly blocks dust from entering the valve body flow channel from the radial gap of the pipe interface, forming the first dust barrier of the pipe connection and preventing dust from entering the valve body and wearing the sealing surface.

[0058] Flange connection seals include:

[0059] The first flange 502 is fixedly installed on the outer surface of the valve pipe body 40;

[0060] The flange sealing groove 503 is formed on the inner wall of the first flange 502 and near the outer side;

[0061] The second flange 510 is fixedly installed on the outer surface of the external pipe body 60;

[0062] The flange sealing plate 505 is fixedly installed on the inner wall of the second flange 510 and is used to insert into the flange sealing groove 503 to form a seal.

[0063] Several connection holes 506 are provided at the first flange 502 and the second flange 510;

[0064] Several sealing bolts 507 are all located inside several connecting holes 506 for locking the first flange 502 and the second flange 510.

[0065] The first flange 502 and the second flange 510 correspond to the valve pipe body 40 and the external pipe body 60, respectively. When they are connected, the flange sealing plate 505 of the second flange 510 is inserted into the flange sealing groove 503 of the first flange 502 to form a middle layer seal. The sealing bolts 507 are inserted into the connection hole 506 and tightened to make the two flanges fit tightly in the axial direction, further compressing the sealing structure, enhancing the axial sealing force, preventing dust from entering from the gaps on the flange end face, and strengthening the sealing performance of the pipe connection.

[0066] Auxiliary barrier components include:

[0067] Groove 508 is formed on the outer wall of the second flange 510 and the first flange 502;

[0068] A rubber locking sealing strip 509 is fitted onto the groove 508 to further seal the gap at the connection between the second flange 510 and the first flange 502.

[0069] When the first flange 502 and the second flange 510 are locked together by the sealing bolts 507, the grooves 508 on the outer walls of the two flanges are aligned to form an annular groove. The rubber locking sealing strip 509 is inserted into the groove 508, and the elastic deformation of the rubber fills the tiny radial gaps at the flange connection, forming a third sealing barrier. This completely blocks the path of dust leakage or intrusion from the gaps on the outside of the flange, achieving full-dimensional dust prevention for the pipeline connection.

[0070] Workflow

[0071] I. Installation and Debugging Phase:

[0072] Pipe sealing system assembly:

[0073] Inner sealing: The pipe sealing plate 504 of the external pipe body 60 is aligned with the pipe sealing groove 501 of the valve pipe body 40 and inserted to form a radial dust barrier for the pipe interface.

[0074] Intermediate sealing: Align the first flange 502 (valve side) with the second flange 510 (external side) so that the flange sealing plate 505 is inserted into the flange sealing groove 503; insert the sealing bolts 507 and tighten them to compress the flange face and achieve axial sealing.

[0075] Outer protection: The rubber locking sealing tape 509 is inserted into the groove 508 on the outer wall of the two flanges, and the elasticity of the rubber fills the radial gap of the flange to complete the triple pipeline seal.

[0076] Valve stem cleaning mechanism assembly:

[0077] Screw the threaded seat 308 of the cleaning component into the threaded groove 306 of the fixing seat 305 to fix the mounting sleeve 307; at this time, the cleaning brush 309 is in contact with the outer surface of the rotating valve stem 20, and the rubber belt 304 pre-presses the valve stem to form a dustproof pretreatment structure for the valve stem.

[0078] II. Operation Phase:

[0079] Valve stem cleaning logic:

[0080] When rotating the valve stem 20 controls the opening and closing of the fixed ball valve body 10, the cleaning brush 309 continuously brushes the dust off the surface of the valve stem.

[0081] After the dust is scraped off by the rubber belt 304, it is radially guided along the inclined surface of the rubber belt 304 to the dust collection tank 303 for temporary storage, so as to prevent the dust from entering the valve body.

[0082] III. Maintenance and Repair Phase: Cleaning Dust Accumulation on Valve Stem

[0083] Twist the cleaning component in the opposite direction, remove the installation sleeve 307, and expose the dust collection groove 303;

[0084] The external vacuum cleaner connects directly to the collection tank opening to suck up the accumulated dust inside the tank (no custom interface required, universal equipment can be used immediately).

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof fixed ball valve, characterized in that, include: A fixed ball valve body (10) is provided with a rotating valve stem (20) on the top of the fixed ball valve body (10), and the rotating valve stem (20) is used to open or close the fixed ball valve body (10). The dust handling and cleaning mechanism (30) is set on the top of the fixed ball valve body (10) and located outside the rotating valve stem (20). It includes a dust collection component, an installation component, and a cleaning component. The dust collection component is fixedly set on the top of the fixed ball valve body (10). The installation component is fixedly set on the top of the dust collection component. The cleaning component is threadedly installed inside the installation component. The cleaning component is used to clean the dust on the outer surface of the rotating valve stem (20) when the rotating valve stem (20) rotates. The dust collection component is used to collect the dust that has been cleaned. The installation component is used to install the cleaning component and can disassemble the cleaning component to perform negative pressure adsorption and concentration of dust inside the dust collection component. Two valve pipe bodies (40) are fixedly installed on both sides of the fixed ball valve body (10); Two external pipe bodies (60) are installed on both sides of the two valve pipe bodies (40); Two pipe dust sealing structures (50) are disposed between two valve pipe bodies (40) and two external pipe bodies (60), including a fixed connection seal, a flange connection seal and an auxiliary barrier. The fixed connection seal is used to seal between the valve pipe body (40) and the external pipe body (60). The flange connection seal is used to fix the valve pipe body (40) and the external pipe body (60) and further seal them. The auxiliary barrier is disposed between the flange connection seals to block dust.

2. A dustproof fixed ball valve according to claim 1, characterized in that, Dust collection components include: A fixed sleeve (301) is fixedly installed on the top of the fixed ball valve body (10); A through groove (302) is formed at the center inside the fixed sleeve (301) for installing the rotating valve stem (20). A dust collection trough (303) is provided at the top of the dust collection trough (303) and located outside the through trough (302) for collecting and storing dust; A rubber strip (304) is positioned above the through groove (302) and fits against the rotating valve stem (20) to further block dust and guide dust into the dust collection groove (303).

3. A dustproof fixed ball valve according to claim 2, characterized in that, The mounting components include: The fixing seat (305) is fixedly installed on the top of the fixing sleeve (301); A threaded groove (306) is formed on the top of the mounting base (305).

4. A dustproof fixed ball valve according to claim 3, characterized in that, Cleaning items include: Installation sleeve (307); The threaded seat (308) is fixedly installed at the bottom of the mounting sleeve (307) and is rotatably threaded into the threaded groove (306); A cleaning brush (309) is fixedly installed inside the mounting sleeve (307) for dust removal from the outer surface of the rotating valve stem (20).

5. A dustproof fixed ball valve according to claim 4, characterized in that, Fixed connection seals include: Pipe sealing groove (501) is formed on the outer wall of valve pipe body (40); The pipe sealing plate (504) is fixedly installed on the inner wall of the external pipe body (60) and is used to insert into the inside of the pipe sealing groove (501) to form a seal.

6. A dustproof fixed ball valve according to claim 5, characterized in that, Flange connection seals include: The first flange (502) is fixedly installed on the outer surface of the valve pipeline body (40); The flange sealing groove (503) is formed on the inner wall of the first flange (502) and near the outer side; The second flange (510) is fixedly installed on the outer surface of the external pipe body (60); The flange sealing plate (505) is fixedly installed on the inner wall of the second flange (510) and is used to be inserted into the flange sealing groove (503) to form a seal; Several connection holes (506) are provided at the first flange (502) and the second flange (510); Several sealing bolts (507) are set inside several connecting holes (506) for locking the first flange (502) and the second flange (510).

7. A dustproof fixed ball valve according to claim 6, characterized in that, Auxiliary barrier components include: The groove (508) is formed on the outer wall of the second flange (510) and the first flange (502); A rubber locking sealing strip (509) is fitted onto the groove (508) to further seal the gap at the connection between the second flange (510) and the first flange (502).

Images