A ball valve with self-cleaning function

Abstract

The present invention discloses a ball valve with a self-cleaning function, which includes a valve body housing. Inside the valve body housing, there is a sphere for water flow regulation and continuous self-cleaning. At least four arc-shaped scrapers for cleaning the outer wall of the sphere are symmetrically arranged about the center of the sphere on the inner wall of the valve body housing. On both sides of the valve body housing, there are fixed connection reflux pipes for loading cleaning liquid, and the cleaning liquid is used for secondary deep cleaning of the inner wall of the sphere when the valve is closed. For this ball valve with a self-cleaning function, when the sphere is rotated to close the valve, due to the arrangement of the arc-shaped scrapers, while the sphere rotates, the impurity particles attached to the outer wall of the sphere are scraped off, and as the liquid is discharged, it is avoided that the outer wall of the sphere is in long-term contact with the liquid and adheres to a large amount of impurities, which affects the rotation of the sphere and causes phenomena such as jamming.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valve equipment, and specifically relates to a ball valve with a self-cleaning function. Background Art

[0002] A ball valve is a closing member, suitable for use as a switch or a cut-off valve, and can be used for the regulation and control of fluids. It came out in the 1950s. With the continuous improvement of production processes and product structures, ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical engineering, papermaking, pharmaceuticals, water conservancy, electric power, municipal engineering, and steel. It occupies a crucial position in the national economy. It has a 90-degree rotation action, the plug body is a sphere, and there is a circular through-hole or channel passing through its axis. The ball valve is mainly used in pipelines to cut off, distribute, and change the flow direction of the medium.

[0003] However, when the existing ball valve equipment is in use, as water or other liquid media flow through, the impurities in the liquid will adhere to the inner wall of the channel of the sphere. With continuous accumulation over time, the diameter of the channel on the sphere becomes smaller and smaller, thus affecting the flow rate of the liquid passing through. Or when the sphere rotates and closes, the outer wall of the sphere is in contact with the liquid in the pipeline for a long time, and impurities are also likely to adhere to the outer wall of the sphere. With the continuous adhesion and accumulation of these impurity particles, the gap between the sphere and the valve seat becomes smaller and smaller until the sealing position, resulting in poor sealing or even jamming and blockage, thus causing valve leakage and even failure. Currently, for a blocked ball valve, the general operation is to disassemble it for valve repair, which is rather troublesome, time-consuming and laborious, and also causes trouble to the liquid transmission, greatly reducing the liquid transmission efficiency and being extremely inconvenient. For example, in the authorized Chinese utility model patent with the publication number CN208565628U named "A Ball Valve with a Self-Cleaning Function", by setting up vibration equipment and other means in cooperation with cleaning liquid to clean the sphere channel, while increasing the product cost, it requires additional energy drive, which is not conducive to energy conservation and environmental protection.

[0004] In view of the above problems, there is an urgent need to innovate and design on the basis of the original ball valve. Summary of the Invention

[0005] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too simple, and provides a ball valve with a self-cleaning function that is significantly different from the existing technology. It is to solve the problem raised in the above background technology that as water or other liquid media flows through, impurities contained in the liquid will adhere to the inner wall of the channel of the ball. As time goes by, the diameter of the channel on the ball becomes smaller and smaller, thereby affecting the flow rate of the liquid passing through. Or when the ball is rotated and closed, the outer wall of the ball is in contact with the liquid in the pipeline for a long time, and impurities are also easily attached to the outer wall of the ball. As these impurity particles continue to adhere and accumulate, the gap between the ball and the valve seat becomes smaller and smaller until it reaches the sealing position, resulting in a loose seal or even a jam.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a ball valve with a self-cleaning function, comprising a valve body shell, a sphere for water flow regulation and continuous self-cleaning arranged inside the valve body shell, and at least four arc-shaped scrapers for cleaning the outer wall of the sphere are symmetrically arranged on the inner wall of the valve body shell about the center of the sphere, a return pipe for loading cleaning liquid is fixedly connected on both sides of the valve body shell, and the cleaning liquid is used to perform secondary deep cleaning of the inner wall of the sphere when closing the valve, a valve control mechanism for controlling the rotation of the ball and the liquid level of the cleaning liquid in the return pipe is installed on the top of the valve body shell, and a power storage structure for storing power through water flow to promote the flow of cleaning liquid is installed at the bottom of the water inlet end of the valve body shell.

[0007] Preferably, the inner wall of the sphere is rotatably connected to a bidirectional spiral shaft through a mounting bracket, and one end of the bidirectional spiral shaft passes through the mounting bracket and is connected to a first propeller driven by water flow, and the outer walls of both ends of the bidirectional spiral shaft are respectively threadedly connected to a first slide cylinder and a second slide cylinder, and the outer walls of the first slide cylinder and the second slide cylinder are connected to an annular scraper for reciprocating cleaning of the inner wall of the sphere through a plurality of support rods, and the support rod is fixedly connected to the side of the annular scraper away from the sphere, and a sliding rod for limiting the position of the first slide cylinder and the second slide cylinder is fixedly connected between the mounting brackets, and the inner wall of the sphere is rotatably connected to a full gear through a fixing bracket, and the upper and lower sides of the full gear are meshed with a rack for force transmission, and the other ends of the two racks are respectively connected to the support rods on the first slide cylinder and the second slide cylinder.

[0008] Preferably, both ends of the bidirectional spiral shaft are provided with bidirectional threads, and the annular scraper is staggered with the support rods on the first slide cylinder and the second slide cylinder.

[0009] Preferably, an auxiliary pipe is connected to the inner side of the return pipe, and a threaded shaft with opposite spirals at both ends is provided in the auxiliary pipe, and the two ends of the threaded shaft are respectively rotatably connected to the two sides of the inner wall of the return pipe, and each end of the threaded shaft is threadedly connected to a piston plate for adjusting the liquid level of the cleaning liquid, and the threaded shaft is connected to the shaft end of the valve control mechanism through a bevel gear set.

[0010] Preferably, the diameter of the bevel gear on the threaded rotating shaft of the bevel gear set is smaller than the diameter of the bevel gear connecting the valve control mechanism. One end inner wall of the return pipe is fixedly connected with a mesh plate for filtering impurities in the cleaning liquid and rotatably connected with a baffle for preventing impurities from flowing back with the cleaning liquid.

[0011] Preferably, the energy storage structure includes a fixed block, a scroll spring, a power storage rotating shaft, a fan blade disc, a chain, an output rotating shaft and a second propeller. One side of the outer wall of the water inlet end of the valve body housing is provided with a fixed block through a protective box, and a scroll spring for power storage is arranged in the fixed block. A power storage rotating shaft is connected to the scroll spring. The power storage rotating shaft is provided with a fan blade disc driven by water flow in the area inside the valve body housing, and the end of the power storage rotating shaft is rotatably connected to the protective box on the other side of the water inlet end of the valve body housing. The end of the power storage rotating shaft is connected to the output rotating shaft through a sprocket and a chain, and one end of the output rotating shaft is rotatably connected to the protective box. The other end of the output rotating shaft penetrates through the inner wall of one end of the return pipe and is connected to a second propeller for driving the flow of the cleaning liquid.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: When the ball valve with self-cleaning function is in use, the sphere is rotated, so that the liquid medium continuously passes through the channel in the sphere, driving the first propeller and the bidirectional screw rotating shaft to rotate. Due to the bidirectional settings of the threads on both ends of the bidirectional screw rotating shaft and the limitation of the sliding rod, the first and second sliding cylinders can reciprocally approach and move away from each other on the bidirectional screw rotating shaft. And because the support rods connecting the annular scraping plates with the first and second sliding cylinders are staggeredly distributed, and two racks are arranged between them. When the first and second sliding cylinders drive the annular scraping plates to approach each other, affected by the flow direction of the liquid, the support rod on the first sliding cylinder will be subject to the driving force of the liquid, while the support rod on the second sliding cylinder will be subject to the same magnitude of resistance due to moving against the current. At this time, through the force transmission of the toothed rod and the full gear, the driving force of the liquid received by the support rod on the first sliding cylinder cancels the liquid resistance received by the support rod on the second sliding cylinder. When the two sliding cylinders move away from each other, vice versa. Thus, it is more convenient for the bidirectional screw rotating shaft to drive the two annular scraping plates to reciprocate, so as to clean the impurity particles attached to the inner wall of the channel. In addition, this cleaning method is driven by water flow. As long as the liquid passes through, the driving structure will clean the inner wall of the channel, without the need for additional energy and equipment for driving control, which is more energy-saving and environment-friendly, and there is no need for manual disassembly for cleaning, which is time-consuming and laborious.

[0013] When the sphere is rotated to close the valve, due to the arrangement of the arc-shaped scraping plate, while the sphere is rotating, the impurity particles attached to the outer wall of the sphere are scraped off. As the liquid is discharged, it is avoided that a large amount of impurities are attached to the outer wall of the sphere due to long-term contact with the liquid, affecting the rotation of the sphere and causing phenomena such as jamming.

[0014] When the valve is controlled to close so that the channel inside the sphere and the return pipe are aligned, the shaft of the valve control mechanism drives the threaded shaft to rotate through the bevel gear set. Due to the different diameters of the bevel gears, the threaded shaft can push the piston plates on both sides to move a longer distance, effectively pushing the cleaning fluid out of the auxiliary pipe, so that the cleaning fluid in the return pipe rises and enters the sphere channel. In addition, when the valve body is closed, the liquid stops flowing, the vortex spring is freed from its restraint, and drives the storage shaft to rotate, which drives the second propeller to rotate through the chain, sprocket and output shaft. Since the diameter of the storage shaft is larger than the output shaft, the second propeller can more effectively push the cleaning fluid in the return pipe to flush the sphere channel, so that the cleaning fluid can more effectively clean the sphere channel, thereby achieving the purpose of deep cleaning the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a top-view cross-sectional structure of the present invention;

[0016] Figure 2 Schematic diagram of the cross-sectional structure of the sphere of the present invention from top view;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the propeller of the present invention;

[0018] Figure 4 This is a schematic diagram of the annular scraper structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0020] Figure 6 This is a side structural schematic diagram of the present invention;

[0021] Figure 7 This is a bottom-view schematic diagram of the bevel gear set of the present invention;

[0022] Figure 8 This is a schematic diagram of the front view of the fan blade disk of the present invention;

[0023] Figure 9 This is a schematic diagram of the arc scraper structure of the present invention.

[0024] In the figure: 1. Valve body shell; 2. sphere; 201. Bidirectional spiral shaft; 202. First propeller; 203. First slide; 204. Second slide; 205. Annular scraper; 206. Rack; 3. Arc scraper; 4. Return pipe; 401. Auxiliary pipe; 402. Threaded shaft; 403. Piston plate; 404. Bevel gear set; 5. Valve control mechanism; 6. Power storage structure; 601. Fixed block; 602. Vortex spring; 603. Power storage shaft; 604. Fan blade disk; 605. Chain; 606. Output shaft; 607. Second propeller. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-9 The present invention provides a technical solution: a ball valve with a self-cleaning function, comprising a valve body shell 1, a ball 2 for water flow regulation and continuous self-cleaning is arranged inside the valve body shell 1, and at least four arc-shaped scrapers 3 for cleaning the outer wall of the ball 2 are symmetrically arranged about the center of the ball 2 on the inner wall of the valve body shell 1, and return pipes 4 for loading cleaning liquid are fixedly connected on both sides of the valve body shell 1, and the cleaning liquid is used to perform secondary deep cleaning on the inner wall of the ball 2 when closing the valve, a valve control mechanism 5 for controlling the rotation of the ball 2 and the liquid level of the cleaning liquid in the return pipe 4 is installed on the top of the valve body shell 1, and a power storage structure 6 for storing power through water flow to promote the flow of cleaning liquid is installed at the bottom of the water inlet end of the valve body shell 1.

[0027] The inner wall of the sphere 2 is rotatably connected to a bidirectional spiral shaft 201 through a mounting frame, and one end of the bidirectional spiral shaft 201 passes through the mounting frame and is connected to a first propeller 202 driven by water flow, and the outer walls of the two ends of the bidirectional spiral shaft 201 are respectively threadedly connected to a first slide 203 and a second slide 204, and the outer walls of the first slide 203 and the second slide 204 are connected to an annular scraper 205 for reciprocating cleaning of the inner wall of the sphere 2 through a number of support rods, and the support rods are fixedly connected to the side of the annular scraper 205 away from the sphere 2, and a sliding rod for limiting the position of the first slide 203 and the second slide 204 is fixedly connected between the mounting frames, and the inner wall of the sphere 2 is rotatably connected to a full gear through a fixed frame, and the upper and lower sides of the full gear are meshed with a rack 206 for force transmission, and the other ends of the two racks 206 are respectively connected to the support rods on the first slide 203 and the second slide 204.

[0028] Both ends of the bidirectional spiral shaft 201 are provided with bidirectional threads, and the annular scraper 205 is staggered with the support rods on the first slide cylinder 203 and the second slide cylinder 204 .

[0029] An auxiliary pipe 401 is connected to the inside of the return pipe 4, and a threaded shaft 402 with opposite spirals at both ends is provided in the auxiliary pipe 401, and the two ends of the threaded shaft 402 are respectively rotatably connected to the two sides of the inner wall of the return pipe 4, and a piston plate 403 for adjusting the liquid level of the cleaning liquid is threadedly connected to each end of the threaded shaft 402. The threaded shaft 402 is connected to the shaft end of the valve control mechanism 5 through a bevel gear set 404.

[0030] The diameter of the bevel gear of the bevel gear set 404 located on the threaded rotating shaft 402 is smaller than the diameter of the bevel gear connecting the valve control mechanism 5. One end of the inner wall of the return pipe 4 is fixedly connected with a mesh plate for filtering impurities in the cleaning liquid and rotatably connected with a baffle for preventing impurities from flowing back with the cleaning liquid.

[0031] The energy storage structure 6 includes a fixed block 601, a scroll spring 602, an energy storage rotating shaft 603, a fan blade disc 604, a chain 605, an output rotating shaft 606 and a second propeller 607. One side of the outer wall of the water inlet end of the valve body housing 1 is provided with a fixed block 601 through a protective box, and a scroll spring 602 for energy storage is arranged in the fixed block 601. And a scroll spring 602 is connected with an energy storage rotating shaft 603. The energy storage rotating shaft 603 is provided with a water flow-driven fan blade disc 604 in the area inside the valve body housing 1. And the end of the energy storage rotating shaft 603 is rotatably connected to the protective box on the other side of the water inlet end of the valve body housing 1. The end of the energy storage rotating shaft 603 is connected to the output rotating shaft 606 through a sprocket and a chain 605. And one end of the output rotating shaft 606 is rotatably connected to the protective box. And the other end of the output rotating shaft 606 penetrates through the inner wall of one end of the return pipe 4 and is connected with a second propeller 607 for driving the cleaning liquid to flow.

[0032] Working principle: According to Figure 1 As shown in the figure, first install the valve body housing 1 into the working area. The staff controls the rotation of the sphere 2 to open through the valve control mechanism 5, so that the liquid in the pipeline enters the valve body housing 1. When passing through the channel of the sphere 2, it drives the first propeller 202 and the bidirectional spiral rotating shaft 201 to rotate. Through the limit of the sliding rod, the first sliding cylinder 203 and the second sliding cylinder 204 move closer to each other. After moving to the closest distance, since both ends of the bidirectional spiral rotating shaft 201 are double-spiral settings, the first sliding cylinder 203 and the second sliding cylinder 204 move away from each other. During the movement of the two, the annular scraper 205 is driven by the support rod to clean the inner wall of the channel, avoiding the attachment of impurities and particles. In addition, during this process, through the setting of the rack 206 and the full gear, the resistance and thrust alternately received on the two annular scrapers 205 cancel each other out, so that it is more convenient for the bidirectional spiral rotating shaft 201 to drive the first sliding cylinder 203 and the second sliding cylinder 204 to move, achieving the cleaning purpose;

[0033] In addition, when the liquid continuously flows through the valve body housing 1, it drives the fan blade disc 604 and the energy storage rotating shaft 603 to rotate. Through the cooperation of the fixed block 601, the scroll spring 602 is restricted, so as to achieve the purpose of energy storage;

[0034] When the staff controls the rotation of the sphere 2 to close it through the valve control mechanism 5, during the process of rotating the sphere 2, the threaded rotating shaft 402 is driven to rotate through the bevel gear set 404, so that the piston plates 403 at both ends move away from each other, pushing the cleaning liquid in the auxiliary pipe 401 into the return pipe 4, and the cleaning liquid in the return pipe 4 enters the channel of the sphere 2. At this time, since the liquid in the pipeline is no longer flowing, the scroll spring 602 is released from the restriction, driving the energy storage rotating shaft 603 to rotate and reset, and driving the output rotating shaft 606 to rotate through the chain 605 and the sprocket. Due to the different diameters, the second propeller 607 drives the cleaning liquid to flow and scour the inner wall of the channel of the sphere 2, achieving a deeper cleaning effect. This structure does not require additional energy and equipment for driving, and is more energy-saving and environmentally friendly. This is the working principle of the ball valve with self-cleaning function.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve with a self-cleaning function, comprising a valve body housing (1), characterized in that: A sphere (2) for water flow regulation and continuous self-cleaning is provided inside the valve body shell (1), and at least four arc-shaped scrapers (3) for cleaning the outer wall of the sphere (2) are symmetrically provided on the inner wall of the valve body shell (1) about the center of the sphere (2), the inner wall of the sphere (2) is rotatably connected to a bidirectional spiral shaft (201) through a mounting frame, and one end of the bidirectional spiral shaft (201) passes through the mounting frame and is connected to a first propeller (202) driven by water flow, and the outer walls of both ends of the bidirectional spiral shaft (201) are respectively threadedly connected to a first slide cylinder (203) and a second slide cylinder (204), and the outer walls of the first slide cylinder (203) and the second slide cylinder (204) are connected to a plurality of support rods for reciprocating cleaning of the inner wall of the sphere (2). The annular scraper (205) is fixedly connected to the annular scraper (205) away from the side of the sphere (2), and a slide rod for limiting the position of the first slide cylinder (203) and the second slide cylinder (204) is fixedly connected between the mounting frames. The inner wall of the sphere (2) is rotatably connected to a full gear through the fixing frame, and the upper and lower sides of the full gear are respectively engaged with a rack (206) for power transmission, and the other ends of the two racks (206) are respectively connected to the support rods on the first slide cylinder (203) and the second slide cylinder (204). The two sides of the valve body shell (1) are fixedly connected with a return pipe (4) for loading the cleaning liquid, and the inner side of the return pipe (4) is connected to the auxiliary pipe (401), and the auxiliary pipe (401) A threaded rotating shaft (402) with opposite spiral ends is provided inside, and the two ends of the threaded rotating shaft (402) are respectively connected to the two sides of the inner wall of the return pipe (4), and the two ends of the threaded rotating shaft (402) are connected to a piston plate (403) for adjusting the liquid level of the cleaning liquid. The threaded rotating shaft (402) is connected to the rotating shaft end of the valve control mechanism (5) through a bevel gear set (404), and the cleaning liquid is used to perform secondary deep cleaning on the inner wall of the ball (2) when the valve is closed. The top of the valve body shell (1) is installed with a valve control mechanism (5) for controlling the rotation of the ball (2) and the liquid level of the cleaning liquid in the return pipe (4), and the bottom of the water inlet end of the valve body shell (1) is installed with a power storage structure (5) for storing power through water flow to promote the flow of the cleaning liquid. 6), the power storage structure (6) includes a fixed block (601), a vortex spring (602), a power storage shaft (603), a fan blade disc (604), a chain (605), an output shaft (606) and a second propeller (607), a fixed block (601) is installed on one side of the outer wall of the water inlet end of the valve body shell (1) through a protective box, and a vortex spring (602) for power storage is provided in the fixed block (601), and the vortex spring (602) is connected to the power storage shaft (603), the power storage shaft (603) is located in the area inside the valve body shell (1) and is installed with a water-driven fan blade disc (604), and the end of the power storage shaft (603) is rotatably connected to the protective box on the other side of the water inlet end of the valve body shell (1),The end of the energy storage rotating shaft (603) is connected to the output rotating shaft (606) through a sprocket and a chain (605). One end of the output rotating shaft (606) is rotatably connected to the protective box, and the other end of the output rotating shaft (606) penetrates through the inner wall of one end of the return pipe (4) and is connected to a second propeller (607) for driving the flow of the cleaning liquid., 2. The ball valve with a self-cleaning function according to claim 1, characterized in that: Both ends of the bidirectional spiral rotating shaft (201) are provided with bidirectional threads, and the annular scraping plate (205) is arranged in a dislocation manner with the support rods on the first sliding cylinder (203) and the second sliding cylinder (204).

3. A ball valve with a self-cleaning function according to claim 1, characterized in that: The diameter of the bevel gear on the threaded rotating shaft (402) where the bevel gear set (404) is located is smaller than the diameter of the bevel gear connecting the valve control mechanism (5). One end inner wall of the return pipe (4) is fixedly connected with a mesh plate for filtering impurities in the cleaning liquid and is rotatably connected with a baffle for preventing impurities from flowing back with the cleaning liquid.

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