Filtering structure for eccentric ball valve

Abstract

The utility model discloses a filter structure for eccentric ball valve relates to eccentric ball valve technical field, including eccentric ball valve body, the left side of eccentric ball valve body is provided with filter equipment for carrying out the filtration to liquid medium and is convenient for replacing filter plate, and the filter equipment includes: filtrate unit, first open and close unit and second open and close unit, and the filtrate unit sets up in the left side of eccentric ball valve body, and includes the flow -through pipe of fixed mounting in the left side of eccentric ball valve body, the inside of flow -through pipe is provided with first slot, and the inside sliding insertion installation of first slot has filter plate, through being provided with dismounting subassembly, and the compression reset spring is removed to the filter plate above by pulling the pull block, can directly along first slot sliding draw or insert filter plate. Solveed the difficult problem that traditional structure needs to dismantle valve or key part to replace filter plate, significantly reduced maintenance time, manpower and system downtime cost.

Description

Technical Field

[0001] This utility model relates to the field of eccentric ball valve technology, specifically a filter structure for eccentric ball valves. Background Technology

[0002] An eccentric ball valve is a new type of valve, an improved version of the ball valve. Its core feature is the eccentricity between the centerline of the valve seat and the centerline of the ball passage. This eccentric design gives it significant advantages over traditional ball valves in terms of sealing performance, operating torque, and wear resistance, and it is widely used in fluid control scenarios in industries such as petroleum, chemical, power, and metallurgy.

[0003] According to the patent titled "An Top-Mounted Eccentric Hemispherical Valve" (patent publication number: CN221683748U, patent publication date: 2024-09-10), it includes a valve body, an inlet channel and an outlet channel formed on the valve body, and a fixing frame. The fixing frame is provided with a filter screen for filtering impurities. The valve body has a locking groove at one end of the inlet channel that matches the fixing frame. The valve body has a through channel at the other end of the inlet channel. The valve body is provided with a sealing cover for sealing the through channel. The sealing cover is provided with a fixing block. One end of the fixing frame is locked in the locking groove, and the other end of the fixing frame passes through the fixing block. The fixing block and the fixing frame are connected by a connecting device. A sealing device is provided between the sealing cover and the valve body.

[0004] Based on the aforementioned existing technology, current filter structures for eccentric ball valves still have the following problems: In traditional fixed filter structures, once the filter screen becomes clogged or damaged, the entire valve or at least key components must be disassembled for cleaning or repair. This process is very time-consuming and labor-intensive, requiring specialized tools and personnel, leading to prolonged system downtime. Therefore, this utility model provides a filter structure for eccentric ball valves. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a filter structure for eccentric ball valves. This solves the following problems associated with existing filter structures for eccentric ball valves: In traditional fixed filter structures, once the filter screen becomes clogged or damaged, the entire valve or at least key components must be disassembled for cleaning or repair. This process is very time-consuming and labor-intensive, requiring specialized tools and personnel, leading to prolonged system downtime.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter structure for an eccentric ball valve, comprising an eccentric ball valve body, wherein a filter mechanism is provided on the left side of the eccentric ball valve body for filtering liquid media and facilitating filter plate replacement, the filter mechanism comprising:

[0007] The filtration unit is located on the left side of the eccentric ball valve body and includes a flow pipe fixedly installed on the left side of the eccentric ball valve body. The flow pipe has a first slot inside, and a filter plate is slidably inserted into the first slot. The filter plate is fixed by a disassembly and assembly component provided above the flow pipe, so as to facilitate the replacement of the filter plate.

[0008] The first opening and closing unit is located on the left side of the inner cavity of the filtrate unit and is used to isolate the liquid medium to achieve backwashing of the filter plate.

[0009] The second opening and closing unit is located on the right side of the inner cavity of the filtrate unit, and the structure of the second opening and closing unit is the same as that of the first opening and closing unit. It is used to isolate the liquid medium to achieve backwashing of the filter plate.

[0010] Preferably, a set of first sealing gaskets is fixedly installed inside the first slot, and the first sealing gaskets are installed on the left and right sides of the filter plate to seal the filter plate.

[0011] Preferably, a first drain pipe is fixedly installed at the bottom of the flow tube, and the first drain pipe is located between the filter plate and the first opening and closing unit. A second drain pipe is fixedly installed at the bottom of the flow tube, and the second drain pipe is located between the filter plate and the second opening and closing unit.

[0012] Preferably, the disassembly and assembly assembly includes an installation box fixedly installed on the top of the flow tube, a sliding column fixedly installed inside the installation box, a sliding rod slidably installed on the surface of the sliding column, and locking blocks fixedly installed at both ends of the sliding rod, a pull block fixedly installed on the top of the sliding rod, and a return spring installed on the surface of the sliding column.

[0013] Preferably, the first opening and closing unit includes a second slot opened inside the flow tube, an opening and closing door is slidably installed inside the second slot, and a set of second sealing gaskets is fixedly installed inside the second slot. The opening and closing door is installed on the left and right sides of the opening and closing door. A top frame is fixedly installed on the top of the flow tube, and a pull column is slidably installed through the top frame. A return spring is installed on the surface of the pull column, and an insertion hole is opened on the front side of the pull column. The bottom end of the pull column is fixedly connected to the top of the opening and closing door. A track seat is fixedly installed on the top of the top frame, and an insertion column is slidably installed inside the track seat. The insertion column is slidably inserted into the insertion hole.

[0014] Preferably, a connecting pipe is fixedly installed on the rear side of the flow pipe, and the connecting pipe connects the space on the left side of the first opening and closing unit with the space between the filter plate and the second opening and closing unit. When the first opening and closing unit and the second opening and closing unit are closed, the liquid medium enters the space between the filter plate and the second opening and closing unit through the connecting pipe to achieve backwashing of the filter plate. The water after backwashing is discharged by opening the first drain pipe and the second drain pipe.

[0015] This invention provides a filter structure for an eccentric ball valve. Compared with the prior art, it has the following advantages:

[0016] 1. This filter structure for eccentric ball valves features a disassembly and assembly component. Pulling the pull block compresses the return spring, causing the retaining block to move away from the top of the filter plate, allowing the filter plate to be directly slid out or inserted along the first slot. This solves the problem of traditional structures requiring valve or critical components to replace the filter plate, significantly reducing maintenance time, manpower, and system downtime costs.

[0017] 2. This filter structure for eccentric ball valves, through symmetrically arranged first and second opening / closing units and connecting pipes, supports in-situ backwashing of the filter plate. When the two opening / closing units isolate the areas on both sides of the filter plate, the liquid medium can flow backward through the connecting pipe into the chamber between the filter plate and the second opening / closing unit, backwashing impurities on the filter plate. The flushed wastewater is then discharged from the system through the first and second drain pipes located at the bottom of the chamber. This allows for the removal of blockages without disassembling the filter plate, significantly extending the filter plate's service life and maintenance cycle, ensuring continuous and efficient system operation. Attached Figure Description

[0018] Figure 1 This is a right-side perspective view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the filtration mechanism of this utility model;

[0020] Figure 3 This is a sectional, three-dimensional structural view of the filter mechanism of this utility model;

[0021] Figure 4 This is a partially split three-dimensional structural view of the filter mechanism of this utility model;

[0022] Figure 5 This is a partial three-dimensional structural diagram of the first opening and closing unit of this utility model;

[0023] Figure 6 This is a rear-view perspective structural diagram of the filter mechanism of this utility model.

[0024] In the diagram: 1-Eccentric ball valve body, 2-Filtering mechanism, 21-Filtration unit, 211-Flow pipe, 212-First slot, 213-First sealing gasket, 214-Filter plate, 215-First drain pipe, 216-Second drain pipe, 22-First opening and closing unit, 221-Second slot, 222-Second sealing gasket, 223-Opening and closing door, 224-Top frame, 225-Pull post, 226-Insertion hole, 227-Return spring, 228-Rail seat, 229-Insertion post, 2210-Connecting pipe, 23-Second opening and closing unit, 3-Disassembly and assembly assembly, 31-Mounting box, 32-Sliding post, 33-Sliding rod, 34-Reset spring, 35-Clamping block, 36-Pull block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 This utility model provides a technical solution:

[0027] A filter structure for an eccentric ball valve includes an eccentric ball valve body 1. A filter mechanism 2 is provided on the left side of the eccentric ball valve body 1 for filtering liquid media and facilitating filter plate replacement. The filter mechanism 2 includes:

[0028] The filtration unit 21 is located on the left side of the eccentric ball valve body 1, including a flow pipe 211 fixedly installed on the left side of the eccentric ball valve body 1. A first slot 212 is provided inside the flow pipe 211, and a filter plate 214 is slidably inserted into the first slot 212. The filter plate 214 is fixed by a disassembly and assembly component 3 provided above the flow pipe 211, so as to facilitate the replacement of the filter plate.

[0029] The first opening and closing unit 22 is located on the left side of the inner cavity of the filtrate unit 21 and is used to isolate the liquid medium to achieve backwashing of the filter plate.

[0030] The second opening and closing unit 23 is located on the right side of the inner cavity of the filtrate unit 21, and the structure of the second opening and closing unit 23 is the same as that of the first opening and closing unit 22. It is used to isolate the liquid medium to achieve backwashing of the filter plate.

[0031] In this embodiment, a set of first sealing gaskets 213 are fixedly installed inside the first slot 212, and the first sealing gaskets 213 are installed on the left and right sides of the filter plate 214 to seal the filter plate 214.

[0032] In this embodiment, a first drain pipe 215 is fixedly installed at the bottom of the flow pipe 211, and the first drain pipe 215 is located between the filter plate 214 and the first opening and closing unit 22. A second drain pipe 216 is fixedly installed at the bottom of the flow pipe 211, and the second drain pipe 216 is located between the filter plate 214 and the second opening and closing unit 23.

[0033] In this embodiment, the disassembly and assembly component 3 includes an installation box 31 fixedly installed on the top of the flow tube 211. A sliding column 32 is fixedly installed inside the installation box 31, and a sliding rod 33 is slidably installed on the surface of the sliding column 32. Both ends of the sliding rod 33 are fixedly installed with locking blocks 35, and a pull block 36 is fixedly installed on the top of the sliding rod 33. A return spring 34 is installed on the surface of the sliding column 32.

[0034] Pulling the pull block 36 compresses the return spring 34, causing the locking block 35 to move away from the top of the filter plate. The filter plate can then be directly slid out or inserted along the first slot 212. This solves the problem of traditional structures requiring the disassembly of valves or key components to replace the filter plate, significantly reducing maintenance time, manpower, and system downtime costs.

[0035] In this embodiment, the first opening and closing unit 22 includes a second slot 221 opened inside the flow pipe 211. An opening and closing door 223 is slidably installed inside the second slot 221, and a set of second sealing gaskets 222 are fixedly installed inside the second slot 221. The opening and closing door 223 is installed on the left and right sides of the opening and closing door 223. A top frame 224 is fixedly installed on the top of the flow pipe 211, and a pull column 225 is slidably installed inside the top frame 224. A return spring 227 is installed on the surface of the pull column 225, and an insertion hole 226 is opened on the front side of the pull column 225. The bottom end of the pull column 225 is fixedly connected to the top of the opening and closing door 223. A track seat 228 is fixedly installed on the top of the top frame 224, and an insertion post 229 is slidably installed inside the track seat 228. The insertion post 229 is slidably inserted into the insertion hole 226.

[0036] In this embodiment, a connecting pipe 2210 is fixedly installed on the rear side of the flow pipe 211, and the connecting pipe 2210 connects the space on the left side of the first opening and closing unit 22 with the space between the filter plate 214 and the second opening and closing unit 23. When the first opening and closing unit 22 and the second opening and closing unit 23 are closed, the liquid medium enters the space between the filter plate 214 and the second opening and closing unit 23 through the connecting pipe 2210, thereby achieving backwashing of the filter plate. The water after backwashing is discharged by opening the first drain pipe 215 and the second drain pipe 216.

[0037] With the symmetrically arranged first and second opening / closing units 22 and 23, and connecting pipe 2210, this structure supports in-situ backwashing of the filter plate 214. When the two opening / closing units isolate the areas on both sides of the filter plate, the liquid medium can flow backward through the connecting pipe 2210 into the chamber between the filter plate 214 and the second opening / closing unit 23, backwashing impurities on the filter plate. The flushed wastewater is then discharged from the system through the first drain pipe 215 and the second drain pipe 216 located at the bottom of the chamber. This allows for the removal of blockages without disassembling the filter plate, significantly extending the service life and maintenance cycle of the filter plate, and ensuring continuous and efficient system operation.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] During operation, the user first pulls the pull block 36, which moves the sliding rod 33 and the locking block 35. The sliding rod 33 compresses the return spring 34, causing the return spring 34 to store force, which moves the locking block 35 away from the top of the filter plate 214. The filter plate 214 is then pulled out through the handle above it for replacement. The user then pulls the pull block 36 again to insert the new filter plate 214 into the first slot 212. The return spring 34 pushes the sliding rod 33 with its stored elastic force, which moves the locking block 35 to the top of the filter plate 214 to fix the position of the filter plate 214.

[0040] Then, the user pulls the pull column 225, which causes the opening and closing door 223 to move upward. The opening and closing door 223 squeezes the return spring 227, and the sliding insert 229 inserts one end into the insertion hole 226 to fix the position of the opening and closing door 223. At the same time, the operation of the second opening and closing unit 23 and the first opening and closing unit 22 allows the liquid medium inside the flow pipe 211 to flow and be filtered by the filter plate 214.

[0041] Finally, one end of the insertion post 229 is moved out of the insertion hole 226. The return spring 227 pushes the opening and closing door 223 down by its own elasticity to close the internal space of the flow pipe 211. At the same time, the operation of the second opening and closing unit 23 is the same as above. Through the closure of the first opening and closing unit 22 and the second opening and closing unit 23, the liquid medium enters the space between the filter plate 214 and the second opening and closing unit 23 through the connecting pipe 2210, realizing the backwashing of the filter plate. The water after backwashing is discharged by opening the first drain pipe 215 and the second drain pipe 216.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] 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 filter structure for an eccentric ball valve, comprising an eccentric ball valve body (1), characterized in that: The left side of the eccentric ball valve body (1) is provided with a filter mechanism (2) for filtering liquid media and facilitating filter plate replacement. The filter mechanism (2) includes: The filtrate unit (21) is located on the left side of the eccentric ball valve body (1) and includes a flow pipe (211) fixedly installed on the left side of the eccentric ball valve body (1). The flow pipe (211) has a first slot (212) inside, and a filter plate (214) is slidably inserted into the first slot (212). The filter plate (214) is fixed by a disassembly and assembly assembly (3) provided above the flow pipe (211) to facilitate the replacement of the filter plate. The first opening and closing unit (22) is located on the left side of the inner cavity of the filtrate unit (21) and is used to isolate the liquid medium to achieve backwashing of the filter plate. The second opening and closing unit (23) is located on the right side of the inner cavity of the filtrate unit (21), and the structure of the second opening and closing unit (23) is the same as that of the first opening and closing unit (22), and is used to isolate the liquid medium to achieve backwashing of the filter plate.

2. The filter structure for an eccentric ball valve according to claim 1, characterized in that: A set of first sealing gaskets (213) are fixedly installed inside the first slot (212), and the first sealing gaskets (213) are installed on the left and right sides of the filter plate (214) to seal the filter plate (214).

3. A filter structure for an eccentric ball valve according to claim 1, characterized in that: The bottom of the flow tube (211) is fixedly installed with a first drain pipe (215), and the first drain pipe (215) is located between the filter plate (214) and the first opening and closing unit (22). The bottom of the flow tube (211) is fixedly installed with a second drain pipe (216), and the second drain pipe (216) is located between the filter plate (214) and the second opening and closing unit (23).

4. A filter structure for an eccentric ball valve according to claim 1, characterized in that: The disassembly and assembly assembly (3) includes an installation box (31) fixedly installed on the top of the flow tube (211). A sliding column (32) is fixedly installed inside the installation box (31), and a sliding rod (33) is slidably installed on the surface of the sliding column (32). Both ends of the sliding rod (33) are fixedly installed with locking blocks (35). A pull block (36) is fixedly installed on the top of the sliding rod (33), and a return spring (34) is installed on the surface of the sliding column (32).

5. A filter structure for an eccentric ball valve according to claim 1, characterized in that: The first opening / closing unit (22) includes a second slot (221) formed inside the flow tube (211). An opening / closing door (223) is slidably installed inside the second slot (221), and a set of second sealing gaskets (222) is fixedly installed inside the second slot (221). The opening / closing door (223) is installed on the left and right sides of the opening / closing door (223). A top bracket (224) is fixedly installed on the top of the flow tube (211), and the top bracket (224) slides inside. A pull column (225) is installed through the pull column (225), and a return spring (227) is installed on the surface of the pull column (225). An insertion hole (226) is opened on the front side of the pull column (225), and the bottom end of the pull column (225) is fixedly connected to the top of the opening and closing door (223). A track seat (228) is fixedly installed on the top of the top frame (224), and an insertion column (229) is slidably installed inside the track seat (228). The insertion column (229) is slidably inserted into the insertion hole (226).

6. A filter structure for an eccentric ball valve according to claim 3, characterized in that: A connecting pipe (2210) is fixedly installed on the rear side of the flow pipe (211), and the connecting pipe (2210) connects the space on the left side of the first opening and closing unit (22) with the space between the filter plate (214) and the second opening and closing unit (23). When the first opening and closing unit (22) and the second opening and closing unit (23) are closed, the liquid medium enters the space between the filter plate (214) and the second opening and closing unit (23) through the connecting pipe (2210) to achieve backwashing of the filter plate. The water after backwashing is discharged by opening the first drain pipe (215) and the second drain pipe (216).

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