A ball valve

Abstract

This utility model discloses a ball valve, comprising: a main valve body, a valve ball, a drain pipe, and a filter assembly. A secondary valve body is connected to one side of the main valve body. The valve ball is installed between the main valve body and the secondary valve body. A drain port is provided at the bottom of the drain pipe. The filter assembly is installed between the main valve body and the drain pipe, and includes: a first flow port, a second flow port, a filter screen, a sealing cap, a first connecting arm, and a second connecting arm. The first and second flow ports are respectively located in the main valve body and the drain pipe. The filter screen rotates between the first and second flow ports, the sealing cap rotates at the drain port, and the first and second connecting arms rotate on the filter screen and the sealing cap, respectively, and are slidably arranged between each other. This utility model, through its coherent structural design, allows for backwashing of the filter screen, thereby reducing impurities remaining on the filter screen, improving the filtration efficiency of the filter screen, and extending the service life of the ball valve.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology, and specifically relates to a ball valve. Background Technology

[0002] A ball valve is a type of valve that controls fluid flow by rotating a ball with a central orifice. It is widely used in industrial piping systems. Its main components include the ball, seat, stem, and handle. The ball controls the flow by rotating; the valve opens when the orifice on the ball aligns with the flow direction, and closes after rotating 90 degrees.

[0003] Since most fluids contain some impurities, these impurities will adhere to the ball valve as it flows through. Therefore, a pre-filter is usually installed at the front of the ball valve to activate the filtration function. However, the existing ball valves with filtration functions have filter screens that are not easy to disassemble and clean. Over time, not only is the filtration effect poor, but they are also prone to clogging, affecting the flow rate of the ball valve and thus affecting its service life.

[0004] Therefore, it is necessary to provide a ball valve to address the aforementioned technical problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a ball valve that can solve the problem of the difficulty in cleaning the filter screen of existing ball valves.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A ball valve includes: a main valve body, a valve ball, a drain pipe, and a filter assembly.

[0009] A secondary valve body is connected to one side of the main valve body. A valve ball is installed between the main valve body and the secondary valve body. The drain pipe is fixed to the bottom of the main valve body and inclined towards the valve ball, with a drain port at its bottom. A filter assembly is installed between the main valve body and the drain pipe. The filter assembly includes: a first flow port, a second flow port, a filter screen, a sealing cap, a first connecting arm, and a second connecting arm. The first and second flow ports are respectively located in the main valve body and the drain pipe, and the second flow port is perpendicular to the axis of the drain pipe, as are the first and second flow ports. The filter screen rotates between the first and second flow ports, the sealing cap rotates at the drain port, and the first and second connecting arms rotate on the filter screen and the sealing cap, respectively, and are slidably connected.

[0010] In one embodiment of this utility model, both the main valve body and the auxiliary valve body have a valve ball mounting head fixed at one end near the valve ball. A pair of valve ball mounting heads are fixedly connected by bolts, and the valve ball is disposed between the pair of valve ball mounting heads. The valve ball can be detachably installed between the main valve body and the auxiliary valve body via the pair of valve ball mounting heads, facilitating removal of the valve ball during later maintenance.

[0011] In one embodiment of this utility model, each of the pair of valve ball mounting heads is fixed with a snap-fit ​​connector, and a snap-fit ​​sleeve is snapped onto each of the pair of snap-fit ​​connectors. The snap-fit ​​sleeve is snapped onto the pair of snap-fit ​​connectors, thereby snapping the upper parts of the pair of valve ball mounting heads together.

[0012] In one embodiment of this utility model, a control rod is fixed to the top of the valve ball, and a wrench is installed at one end of the control rod outside a pair of snap-fit ​​connectors. The wrench drives the valve ball to rotate via the control rod, thereby opening and closing the valve ball.

[0013] In one embodiment of this utility model, a locking block is fixed to one end of the control lever outside a pair of locking connectors, and a connector is fixed to one end of the wrench, the connector being locked onto the locking block. The wrench is locked onto the locking block via the connector, thereby causing it to drive the valve ball to rotate via the control lever.

[0014] In one embodiment of this utility model, a first fastening bolt is fixed to the top of the locking block, and a first fastening nut is threaded onto the first fastening bolt. The first fastening nut is threaded onto the first fastening bolt, and since the first fastening nut is located on the top of the connector, the first fastening nut locks the connector onto the locking block.

[0015] In one embodiment of this utility model, a rotating head is fixed on both the filter screen and the sealing cover, and the first connecting arm and the second connecting arm rotate on a pair of rotating heads respectively. The first connecting arm and the second connecting arm are rotatably connected to the filter screen and the sealing cover respectively through the pair of rotating heads.

[0016] In one embodiment of this utility model, a groove is carved into the first connecting arm, and a sliding rod is fixed on the second connecting arm. The sliding rod slides in the groove, and a limiting head is fixed to one end of the sliding rod within the groove. The first and second connecting arms are slidably connected to each other via the sliding rod in the groove. The limiting head prevents the sliding rod from slipping out of the groove, and the second connecting arm pulls the first connecting arm through the limiting head. Furthermore, the sliding of the sliding rod in the groove solves the problem that the lengths of the first and second connecting arms are insufficient to fully open the sealing cover when it is opened outwards.

[0017] In one embodiment of this invention, a sealing plug adapted to the drain outlet is fixed to the side of the sealing cap near the drain outlet. The sealing plug increases the sealing performance between the drain outlet and the sealing cap.

[0018] In one embodiment of this utility model, a second fastening bolt is fixed to the drain outlet, and a U-shaped groove is cut into the sealing cover. The second fastening bolt is disposed in the U-shaped groove, and a second fastening nut is threadedly connected to one end of the second fastening bolt outside the sealing cover. The sealing cover is disposed in the U-shaped groove by the second fastening bolt, and is tightened onto the second fastening bolt by the threaded fastening nut, thereby locking the sealing cover onto the drain outlet.

[0019] Compared with the prior art, the ball valve of this utility model, through related structural design, can backwash the filter screen, thereby reducing the residue of impurities on the filter screen, improving the filtration efficiency of the filter screen, and extending the service life of the ball valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a ball valve in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of another state of a ball valve in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure in which the valve ball is installed with the main valve body and the auxiliary valve body in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first connecting arm and the second connecting arm in one embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1-Main valve body, 101-Drainage pipe, 102-Secondary valve body, 103-Valve ball, 104-Drainage port, 105-Valve ball mounting head, 106-Snap-fit ​​connector, 107-Snap-fit ​​sleeve, 108-Control lever, 109-Snap-fit ​​block, 110-First fastening bolt, 111-Wrench, 112-Connector, 113-First fastening nut, 2-Filter assembly, 201-First flow port, 202-Second flow port, 203-Filter screen, 204-Sealing cover, 205-Sealing plug, 206-First connecting arm, 207-Second connecting arm, 208-Rotating head, 209-Slide groove, 210-Slide rod, 211-Limit head, 212-U-shaped groove, 213-Second fastening bolt, 214-Second fastening nut. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0028] like Figures 1 to 4 As shown, a ball valve in one embodiment of the present invention includes: a main valve body 1, a valve ball 103, a drain pipe 101, and a filter assembly 2.

[0029] like Figures 1 to 4 As shown, a secondary valve body 102 is connected to one side of the main valve body 1. A valve ball 103 is installed between the main valve body 1 and the secondary valve body 102. A drain pipe 101 is fixed to the bottom of the main valve body 1 and is inclined towards the valve ball 103. A drain port 104 is provided at the bottom of the drain pipe 101. The filter assembly 2 is installed between the main valve body 1 and the drain pipe 101. The filter assembly 2 includes: a first flow port 201, a second flow port 202, a filter screen 203, a sealing cover 204, a first connecting arm 206, and a second connecting arm 207. The first flow port 201 and the second flow port 202 are respectively located in the main valve body 1 and the drain pipe 101. The second flow port 202 is perpendicular to the axis of the drain pipe 101, and the first flow port 201 and the second flow port 202 are perpendicular to each other. The filter screen 203 rotates between the first flow port 201 and the second flow port 202. The sealing cover 204 rotates at the drain port 104. The first connecting arm 206 and the second connecting arm 207 rotate on the filter screen 203 and the sealing cover 204, respectively, and the first connecting arm 206 and the second connecting arm 207 are slidably arranged between each other.

[0030] When using this device, the sealing cover 204 is closed at the drain port 104. The sealing cover 204, through the first connecting arm 206 and the second connecting arm 207, pushes the filter screen 203 to rotate, causing the filter screen 203 to rotate to the first flow port 201. Then, the valve ball 103 is opened, and the fluid flows through the filter screen 203 at the first flow port 201 in the main valve body 1. The filter screen 203 filters out impurities in the fluid, and the filtered impurities settle downwards and fall into the drain pipe 101. When it is necessary to clean the filter screen 203, first close the valve ball 103, and then open the sealing cover 204 from the drain port 104. After opening, the impurities deposited in the drain pipe 101 will be discharged. When the sealing cover 204 is opened, the filter screen 203 is pulled again by the first connecting arm 206 and the second connecting arm 207 to rotate, so that the filter screen 203 rotates to the second flow port 202, and the fluid flows out from the sewage pipe 101. During the outflow process, the filter screen 203 is backwashed, and the impurities accumulated on the filter screen 203 are washed down in the opposite direction, thus completing the cleaning of the filter screen 203. Then the sealing cover 204 can be closed.

[0031] like Figures 1 to 4 As shown, both the main valve body 1 and the auxiliary valve body 102 have valve ball mounting heads 105 fixed at one end near the valve ball 103. A pair of valve ball mounting heads 105 are connected by bolts, and the valve ball 103 is positioned between the pair of valve ball mounting heads 105. The valve ball 103 is detachably mounted between the main valve body 1 and the auxiliary valve body 102 via the pair of valve ball mounting heads 105, facilitating removal of the valve ball 103 during later maintenance. Each pair of valve ball mounting heads 105 has a snap-fit ​​connector 106 fixed to it, and a snap-fit ​​sleeve 107 is snapped onto each snap-fit ​​connector 106. The snap-fit ​​sleeve 107 snaps onto the snap-fit ​​connector 106, thereby snapping the upper parts of the pair of valve ball mounting heads 105 together.

[0032] like Figures 1 to 4 As shown, a control lever 108 is fixed to the top of the valve ball 103. A wrench 111 is installed at one end of the control lever 108 outside a pair of snap-fit ​​connectors 106. The wrench 111 drives the valve ball 103 to rotate via the control lever 108, thereby opening and closing the valve ball 103. A locking block 109 is fixed to one end of the control lever 108 outside the pair of snap-fit ​​connectors 106, and a connector 112 is fixed to one end of the wrench 111. The connector 112 is engaged with the locking block 109. The wrench 111 is engaged with the locking block 109 via the connector 112, thereby driving the valve ball 103 to rotate via the control lever 108.

[0033] like Figures 1 to 4As shown, a first fastening bolt 110 is fixed to the top of the locking block 109, and a first fastening nut 113 is threaded onto the first fastening bolt 110. The first fastening nut 113 is tightened onto the first fastening bolt 110 by the thread, and the first fastening nut 113 is located on top of the connector 112, thereby locking the connector 112 onto the locking block 109. Rotating heads 208 are fixed to both the filter screen 203 and the sealing cover 204. The first connecting arm 206 and the second connecting arm 207 rotate on a pair of rotating heads 208 respectively. The first connecting arm 206 and the second connecting arm 207 are rotatably connected to the filter screen 203 and the sealing cover 204 respectively through the pair of rotating heads 208.

[0034] like Figures 1 to 4 As shown, a groove 209 is carved into the first connecting arm 206, and a sliding rod 210 is fixed on the second connecting arm 207. The sliding rod 210 slides in the groove 209, and a limiting head 211 is fixed to one end of the sliding rod 210 in the groove 209. The first connecting arm 206 and the second connecting arm 207 are slidably connected to each other by the sliding rod 210 in the groove 209. The limiting head 211 fixed to one end of the sliding rod 210 in the groove 209 prevents the sliding rod 210 from slipping out of the groove 209, and the second connecting arm 207 pulls the first connecting arm 206 by the limiting head 211. Furthermore, the sliding of the sliding rod 210 in the groove 209 solves the problem that the length of the first connecting arm 206 and the second connecting arm 207 is insufficient to fully open the sealing cover 204 when it is opened outwards.

[0035] like Figures 1 to 4 As shown, a sealing plug 205, adapted to the drain outlet 104, is fixed to the side of the sealing cover 204 near the drain outlet 104. The sealing plug 205 increases the sealing between the drain outlet 104 and the sealing cover 204. A second fastening bolt 213 is fixed to the drain outlet 104. A U-shaped groove 212 is cut into the sealing cover 204. The second fastening bolt 213 is located in the U-shaped groove 212, and a second fastening nut 214 is threaded to the end of the second fastening bolt 213 outside the sealing cover 204. The sealing cover 204 is located in the U-shaped groove 212 by the second fastening bolt 213, and is tightened onto the second fastening bolt 213 by the threaded second fastening nut 214, thereby locking the sealing cover 204 onto the drain outlet 104.

[0036] Working principle: When using this device, the sealing cover 204 is closed at the drain port 104. The sealing cover 204 pushes the filter screen 203 to rotate through the first connecting arm 206 and the second connecting arm 207, causing the filter screen 203 to rotate to the first flow port 201. Then, the valve ball 103 is rotated by the wrench 111 to open the valve ball 103. Fluid flows through the filter screen 203 at the first flow port 201 in the main valve body 1. The filter screen 203 filters out impurities in the fluid. The filtered impurities settle downwards and fall into the drain pipe 101.

[0037] When the filter screen 203 needs to be cleaned, first close the valve ball 103, then unscrew the second fastening nut 214 from the second fastening bolt 213, and then open the sealing cover 204 from the drain port 104. After opening, the impurities deposited in the drain pipe 101 will be discharged. When the sealing cover 204 is opened, the sealing cover 204 pulls the second connecting arm 207 outward, and the second connecting arm 207 pulls the slide rod 210 outward from the slide groove 209. When the slide rod 210 drives the limiting head 211 to slide to the bottom of the slide groove 209, the limiting head 211 pulls the first connecting arm 206, thereby causing the first connecting arm 206 to pull the filter screen 203, causing the filter screen 203 to rotate to the second flow port 202. Fluid flows out from the drain pipe 101. During the outflow process, the filter screen 203 is backwashed, and the impurities accumulated on the filter screen 203 are washed down in the opposite direction, thus completing the cleaning of the filter screen 203. Then the sealing cover 204 is closed.

[0038] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ball valve, characterized in that include: A main valve body, with a secondary valve body connected to one side of the main valve body; The valve ball is installed between the main valve body and the auxiliary valve body; A drain pipe is fixed to the bottom of the main valve body and inclined toward the valve ball, and a drain port is provided at the bottom of the drain pipe; and A filter assembly is installed between the main valve body and the drain pipe. The filter assembly includes: a first flow port, a second flow port, a filter screen, a sealing cover, a first connecting arm, and a second connecting arm. The first flow port and the second flow port are respectively located in the main valve body and the drain pipe, and the second flow port is perpendicular to the axis of the drain pipe, as are the first and second flow ports. The filter screen rotates between the first and second flow ports, the sealing cover rotates at the drain port, and the first and second connecting arms rotate on the filter screen and the sealing cover, respectively, and are slidably connected to each other.

2. A ball valve according to claim 1, wherein Both the main valve body and the auxiliary valve body have valve ball mounting heads fixed at one end near the valve ball. A pair of valve ball mounting heads are fixedly connected by bolts, and the valve ball is located between the pair of valve ball mounting heads.

3. A ball valve according to claim 2, wherein Each pair of valve ball mounting heads is fixed with a snap-fit ​​connector, and a snap-fit ​​sleeve is snapped onto each pair of snap-fit ​​connectors.

4. A ball valve according to claim 3, characterized in that, A control rod is fixed to the top of the valve ball, and a wrench is installed at one end of the control rod outside a pair of snap-fit ​​connectors.

5. A ball valve according to claim 4, wherein The control lever has a locking block fixed at one end outside a pair of locking connectors, and a connector is fixed at one end of the wrench, with the connector locking onto the locking block.

6. A ball valve according to claim 5, wherein The top of the card block is fixed with a first fastening bolt, and a first fastening nut is threaded onto the first fastening bolt.

7. A ball valve according to claim 1, wherein Both the filter screen and the sealing cover are fixed with rotating heads, and the first connecting arm and the second connecting arm rotate on a pair of rotating heads respectively.

8. A ball valve according to claim 7, wherein The first connecting arm has a groove carved inside, and the second connecting arm has a sliding rod fixed on it. The sliding rod slides in the groove, and a limit head is fixed at one end of the sliding rod located in the groove.

9. A ball valve according to claim 1, wherein The sealing cap has a sealing plug that matches the drain outlet fixed on the side near the drain outlet.

10. A ball valve according to claim 9, wherein A second fastening bolt is fixed on the drain outlet, and a U-shaped groove is cut on the sealing cover. The second fastening bolt is located in the U-shaped groove, and a second fastening nut is threaded to one end of the second fastening bolt outside the sealing cover.

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