Self-cleaning type anti-blocking ball valve
The self-cleaning anti-blocking ball valve solves the clogging and misoperation problems during the juice delivery process through self-cleaning fluid components and rotating self-cleaning components, realizing self-cleaning and stable delivery of juice.
Patent Information
- Application Number
- CN202510602177.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-08-01
AI Technical Summary
The production process is unstable due to prone to clogging during juice delivery and the mistouching of the ball valve handle.
The self-cleaning anti-blocking ball valve is designed, which includes a self-cleaning fluid assembly and a rotating self-cleaning assembly. It changes the juice flow state through a spiral flow guide plate, uses the juice flow energy to drive the cleaning blade to remove impurities, and uses the handle self-limiting assembly to prevent misoperation.
Effectively avoid ball valve blockage, improve cleaning efficiency, ensure stable operation of the valve, prevent misoperation, and improve operation convenience.
Smart Images
Figure CN120402655A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ball valves, and particularly to a self-cleaning and anti-blocking ball valve. Background Art
[0002] A ball valve is a valve that realizes the functions of opening, closing, and regulating the flow rate by rotating a sphere around an axis. It realizes the opening and closing of the valve and the flow control by rotating the sphere around the axis of the valve stem. When the through-hole of the sphere is aligned with the axis of the pipeline, the valve is in the open state, and the medium can pass through freely. When the sphere rotates 90 degrees so that the through-hole is perpendicular to the axis of the pipeline, the valve is in the closed state, cutting off the flow of the medium. Due to its advantages such as simple structure, good sealing performance, and rapid switching, ball valves are widely used in industries such as petroleum and natural gas, chemical industry, food, and pharmaceuticals; In the production, blending, and transportation links of fruit juice beverages, ball valves are often used to control the on-off and flow rate of fruit juice. The original fruit juice obtained after fruit juicing may be mixed with impurities such as pulp fibers and fruit core fragments. During transportation, there are gaps and spaces at the connection between the valve ball and the sealing ring. When the fruit juice flows through here, the flow rate changes, forming local eddies or low-speed areas. The movement speed of impurities such as pulp fibers and fruit core fragments slows down in these areas, and then they precipitate and accumulate. When a large amount of pulp fibers accumulate and cause blockage, the operating resistance of the valve will increase significantly, making the opening and closing operations difficult. Especially when the valve is closed, the impurities prevent the valve ball from rotating completely to the closed position, resulting in the valve being unable to close completely, and ultimately causing continuous leakage of fruit juice. Secondly, some ball valves drive the valve stem and the sphere to rotate through a handle. In some fruit juice beverage production equipment, the ball valve is often installed in an extremely compact area, surrounded by various other equipment and intricate pipelines. When the operator is performing other operations nearby, it is very likely that the body or the tools in the hand will accidentally touch the valve handle, causing the valve to open or close without warning, and thus having many adverse effects on the production process. In view of the above problems, the inventor proposes a self-cleaning and anti-blocking ball valve to solve the above problems. Summary of the Invention
[0003] In order to solve the problems of self-cleaning to avoid blockage and preventing accidental touch of the ball valve handle during fruit juice transportation; the purpose of the present invention is to provide a self-cleaning and anti-blocking ball valve.
[0004] To solve the above technical problems, the present invention adopts the following technical solution: A self-cleaning and anti-blocking ball valve, including a valve body, a liquid outlet pipe, and a liquid inlet pipe. The liquid outlet pipe and the liquid inlet pipe are respectively connected through the valve body at both ends. A valve ball is rotatably arranged inside the valve body. A cleaning pipe is provided at the outer end of the liquid inlet pipe. A self-cleaning fluid assembly and a rotating self-cleaning assembly for preventing blockage inside the valve body are respectively provided in the cleaning pipe and the liquid inlet pipe. A valve stem is provided at the top of the valve ball, and the valve stem is rotatably installed on the valve body. A handle self-limiting assembly is provided at the top of the valve stem; The self-cleaning fluid assembly includes six liquid inlet frames distributed in an annular array and a spiral flow guide plate. The liquid inlet frames are used to divide the juice in the cleaning pipe, and the spiral flow guide plate is used to change the flow direction of the direct-current juice to form a spiral flow state, so as to promote the juice on the outside to enter the liquid inlet frame. There are six output pipes distributed in an annular array in the liquid inlet pipe, and the liquid discharge end of the output pipe is inclined at 30° and penetrates the inner wall of the cleaning pipe. The output pipe is connected to the liquid inlet frame in a through manner. A conical frame is connected to the side of the liquid inlet frame close to the liquid inlet pipe in a through manner. The conical frame is a conical structure and is tapered along the liquid flow direction, that is, it gradually narrows from one end to the other end. The narrow end of the conical frame is connected to an inlet pipe in a through manner, and the inlet pipe is connected to the corresponding output pipe in a through manner. The liquid inlet pipe and the cleaning pipe are connected by a flange connection method, and a rubber sealing ring adapted to them is provided at the connection part between the two to ensure the sealing of the connection; The rotating self-cleaning assembly includes a driven shaft, and the driven shaft is rotatably installed at the center of the middle part of the liquid inlet pipe. A cleaning frame is fixedly provided at one end of the driven shaft close to the valve body. Six cleaning scrapers distributed in an annular array are fixedly provided on the outside of the cleaning frame. The cleaning scrapers are rubber scrapers, and the outside of the cleaning scrapers is attached to the inner wall of the valve seat sealing ring and the outer wall of the valve ball. A driving shaft is rotatably provided at the center of the middle part of the cleaning pipe. Two limiting strips are fixedly provided on the outer wall of one end of the driving shaft close to the liquid inlet pipe. An inner groove that cooperates with the driving shaft for easy installation and use is opened at the center of the end of the driven shaft away from the cleaning frame, and the driving shaft can be inserted into the inner groove. An impeller for driving the driving shaft to rotate is fixedly sleeved in the middle of the outer wall of the driving shaft. A cross shaft seat is fixedly welded on the inner wall of the end of the liquid inlet pipe away from the valve body, and the driven shaft is rotatably installed on the cross shaft seat. Cross shaft seats are fixedly welded on the inner walls at both ends of the cleaning pipe, and the driving shaft is rotatably installed on the cross shaft seats.
[0005] Preferably, the handle self-limiting component includes a handle frame, the handle frame is fixedly installed at the top of the valve stem, a lever is rotatably provided at the top of the handle frame, a limiting bolt is inserted through one side of the handle frame, a lifting plate that cooperates with the lever is fixedly provided on the outer wall of the limiting bolt, a limiting plate that cooperates with the limiting bolt is fixedly provided on the outer wall of the upper part of the valve body, a first return spring is sleeved on the outer wall of the limiting bolt, and both ends of the first return spring are fixedly connected to the inner wall of the handle frame and the top of the lifting plate respectively. Two limiting grooves are opened in the limiting plate, and the included angle between the two limiting grooves and the center line of the valve stem is 90°. The limiting bolt is inserted into the limiting groove. A fixed shaft is fixedly provided in the middle of the handle frame, a lever is rotatably sleeved on the outer wall of the fixed shaft, a sliding groove is opened at the top of the lever, a guiding shaft is fixedly provided at the top of one end of the lever close to the lever, and the guiding shaft slides in the sliding groove. A second return spring for pushing the lever to reset is fixedly provided between the lever and the handle frame.
[0006] Preferably, valve seat sealing rings that cooperate with the valve ball to prevent juice leakage are fixedly provided on the inner walls of the liquid outlet pipe and the liquid inlet pipe close to the valve body side. The liquid outlet pipe and the liquid inlet pipe are fixedly connected to the four corners of the valve body through bolts and nuts.
[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the self-cleaning fluid component, the present invention changes the conveying line of the juice during the conveying process, guides the outer part of the juice into the liquid inlet frame, accelerates the juice flow rate, and then accurately discharges it obliquely to the connection between the valve ball and the sealing ring, forming a strong impact and agitation on the low-speed eddy area, effectively destroying the generation of eddies, significantly reducing the probability of juice fibers aggregating here. Through the above operations, the ball valve realizes the self-cleaning effect during the juice conveying process, effectively avoiding the blockage of the ball valve; 2. By setting the rotating self-cleaning component, during the flowing process of the juice, the power generated by the juice acts on the impeller, without the need to additionally install an external drive source. The impeller, drive shaft, driven shaft, and cleaning frame drive the cleaning scraper to rotate, so that the cleaning scraper continuously rotates at the fitting part between the inner wall of the valve seat sealing ring and the outer wall of the valve ball, scraping the residual impurities after flushing, greatly improving the cleaning efficiency; 3. By setting the handle self-limiting component and skillfully applying the lever principle, the operator only needs to gently press on the long rod part of the lever with a finger to easily complete the extraction and insertion actions of the limit bolt. During this process, in cooperation with the rotation of the handle frame, the switching of the valve state can be smoothly completed. The entire operation process is simple and smooth, greatly improving the operation convenience. When the limit bolt is accurately inserted into the limit groove, it will immediately limit the handle frame, effectively preventing the valve state from changing unexpectedly due to accidental external force collision during the use of the valve, providing a solid guarantee for the stable operation of the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded structure schematic diagram after the overall side of the present invention is sectioned; Figure 3 It is a sectional structure schematic diagram of the overall of the present invention; Figure 4 It is a schematic diagram of the structure of the handle self-limiting component in the present invention; Figure 5 It is a schematic diagram of the structure of the driven shaft and the output pipe in the present invention; Figure 6 It is a schematic diagram of the structure of the drive shaft, impeller, and spiral flow guide plate in the present invention; Figure 7 Schematic structural diagram of the liquid inlet frame, conical frame and inlet pipe in the present invention; Figure 8 is Figure 2 Enlarged schematic diagram of the structure at position A in; Figure 9 is Figure 3 Enlarged schematic diagram of the structure at position B in; Figure 10 is Figure 3 Enlarged schematic diagram of the structure at position C in.
[0010] In the figure: 1, valve body; 2, liquid outlet pipe; 3, liquid inlet pipe; 4, valve ball; 5, cleaning pipe; 6, self-cleaning fluid assembly; 601, liquid inlet frame; 602, spiral flow guide plate; 603, output pipe; 604, conical frame; 605, inlet pipe; 606, rubber sealing ring; 7, rotary self-cleaning assembly; 701, driven shaft; 702, driving shaft; 703, cleaning frame; 704, cleaning scraper; 705, impeller; 706, cross shaft seat; 8, valve stem; 9, handle self-limiting assembly; 901, handle frame; 902, lever; 903, limit bolt; 904, lifting plate; 905, limit plate; 906, first return spring; 907, fixed shaft; 908, lever; 909, second return spring; 10, valve seat sealing ring. Specific embodiments
[0011] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0012] Embodiment: As Figures 1 - 10 shown, the present invention provides a technical solution: a self-cleaning anti-blocking ball valve, including a valve body 1, a liquid outlet pipe 2 and a liquid inlet pipe 3. The liquid outlet pipe 2 and the liquid inlet pipe 3 are respectively connected through the two ends of the valve body 1. A valve ball 4 is rotatably arranged inside the valve body 1. A cleaning pipe 5 is arranged at the outer end of the liquid inlet pipe 3. A self-cleaning fluid assembly 6 and a rotary self-cleaning assembly 7 for preventing blockage inside the valve body 1 are respectively arranged in the cleaning pipe 5 and the liquid inlet pipe 3. A valve stem 8 is arranged at the top of the valve ball 4, and the valve stem 8 is rotatably installed on the valve body 1. A handle self-limiting assembly 9 is arranged at the top of the valve stem 8; The self-cleaning fluid assembly 6 includes six liquid inlet frames 601 distributed in an annular array and a spiral flow guide plate 602. The liquid inlet frames 601 are used to divide the juice in the cleaning pipe 5, and the spiral flow guide plate 602 is used to change the flow direction of the direct-current juice to form a spiral flow state, so as to promote the juice on the outside to enter the liquid inlet frames 601. Six output pipes 603 distributed in an annular array are arranged in the liquid inlet pipe 3, and the liquid discharge ends of the output pipes 603 are inclined at 30° and penetrate through the inner wall of the cleaning pipe 5. The output pipes 603 are connected to the liquid inlet frames 601 in a through manner; The rotating self-cleaning assembly 7 includes a driven shaft 701. The driven shaft 701 is rotatably installed at the center of the middle part of the liquid inlet pipe 3. A cleaning frame 703 is fixedly arranged at one end of the driven shaft 701 close to the valve body 1, and six cleaning scrapers 704 distributed in an annular array are fixedly arranged on the outside of the cleaning frame 703.
[0013] By adopting the above technical solutions, during the process of transporting the juice through the ball valve, the self-cleaning fluid assembly 6 and the rotating self-cleaning assembly 7 are used to self-clean the impurities at the contact part between the valve ball 4 and the valve seat seal ring 10 inside the ball valve, avoiding accumulation and blockage of the valve.
[0014] The handle self-limiting assembly 9 includes a handle frame 901. The handle frame 901 is fixedly installed at the top end of the valve rod 8. A lever 902 is rotatably arranged at the top end of the handle frame 901. A limit bolt 903 is inserted through one side of the handle frame 901. A lifting plate 904 that cooperates with the lever 902 is fixedly arranged on the outer wall of the limit bolt 903. A limit plate 905 that cooperates with the limit bolt 903 is fixedly arranged on the outer wall of the upper part of the valve body 1. A first return spring 906 is sleeved on the outer wall of the limit bolt 903, and both ends of the first return spring 906 are fixedly connected to the inner wall of the handle frame 901 and the top end of the lifting plate 904 respectively. By arranging the first return spring 906, it is convenient to push the limit bolt 903 to reset.
[0015] By adopting the above technical solutions, the lever 902 is flipped to push the limit bolt 903 to rise through the lifting plate 904.
[0016] Valve seat seal rings 10 that cooperate with the valve ball 4 to prevent juice leakage are fixedly arranged on the inner walls of the liquid outlet pipe 2 and the liquid inlet pipe 3 close to the valve body 1. The cleaning scraper 704 is a rubber scraper, and the outer side of the cleaning scraper 704 is attached to the inner wall of the valve seat seal ring 10 and the outer wall of the valve ball 4.
[0017] By adopting the above technical solutions, the cleaning scraper 704 rotates to scrape off the impurities such as juice fibers attached to the inner wall of the valve seat seal ring 10 and the outer wall of the valve ball 4, avoiding the accumulation and blockage of impurities.
[0018] A conical frame 604 is connected to the side of the liquid inlet frame 601 close to the liquid inlet pipe 3 in a through manner. The conical frame 604 is of a conical structure and is tapered along the liquid flow direction, that is, it gradually narrows from one end to the other end. The narrow end of the conical frame 604 is connected to an inlet pipe 605 in a through manner, and the inlet pipe 605 is connected to the corresponding outlet pipe 603 in a through manner.
[0019] By adopting the above technical solution, when the fruit juice flows from the wide liquid inlet end of the conical frame 604 to the narrow liquid outlet end, due to the gradual reduction of the cross-sectional area of the flow channel, and under the condition of constant flow rate, the flow velocity of the fluid increases. The accelerated fruit juice can impact the low-velocity eddy area at the contact between the valve ball 4 and the valve seat sealing ring 10 at a higher speed, effectively destroying the eddy structure, more efficiently dispersing impurities such as fruit juice fibers that may accumulate, maintaining the smooth flow of the fruit juice, and reducing the risk of blockage.
[0020] A drive shaft 702 is rotatably arranged at the center of the axis of the middle part of the cleaning pipe 5. Two limit strips are fixedly arranged on the outer wall of one end of the drive shaft 702 close to the liquid inlet pipe 3. An inner groove is opened at the center of the end of the driven shaft 701 far from the cleaning frame 703, which is matched with the drive shaft 702 for convenient installation and use, so that the drive shaft 702 can drive the driven shaft 701 to rotate, and the drive shaft 702 can be inserted into the inner groove. An impeller 705 for driving the drive shaft 702 to rotate is fixedly sleeved on the middle part of the outer wall of the drive shaft 702.
[0021] By adopting the above technical solution, when the fruit juice fluid passes through the cleaning pipe 5, it directly acts on the impeller 705. After the impeller 705 is stressed, relying on its own structural characteristics, it directly drives the drive shaft 702 to rotate. In this way, without the need to add an additional external drive source, the stable operation of the drive shaft 702 can be realized by using the energy of the fruit juice flow, reducing the energy consumption and cost.
[0022] Two limit grooves are opened in the limit plate 905, and the included angle between the center lines of the two limit grooves and the valve rod 8 is 90°. The included angle between the center lines of the two limit grooves is 90°, which corresponds to the 90° opening and closing rotation of the valve ball 4. The limit bolt 903 is inserted into the limit groove.
[0023] By adopting the above technical solution, the limit bolt 903 is inserted into the limit groove opened in the limit plate 905. When the handle frame 901 is subjected to an external collision, the handle frame 901 is effectively prevented from moving under the action of the limit bolt 903.
[0024] A fixed shaft 907 is fixedly provided in the middle of the handle holder 901. An outer wall of the fixed shaft 907 is rotatably sleeved with a lever 908. A chute is provided at the top of the lever 908. A guide shaft is fixedly provided at the top of one end of the shift lever 902 close to the lever 908, and the guide shaft slides in the chute. A second return spring 909 for pushing the lever 908 to reset is fixedly provided between the lever 908 and the handle holder 901. By providing the second return spring 909, when the lever 908 stops being used, the lever 908 can be pushed back to the initial position.
[0025] By adopting the above technical solution, a relatively small force is applied to the lever 908 to push the shift lever 902 to rotate.
[0026] The liquid inlet pipe 3 and the cleaning pipe 5 are connected by a flange connection method, and a rubber sealing ring 606 adapted thereto is provided at the connection part between the two to ensure the sealing performance of the connection.
[0027] By adopting the above technical solution, the sealing performance of the connection between the liquid inlet pipe 3 and the cleaning pipe 5 and the connection between the output pipe 603 and the introduction pipe 605 is ensured, and juice leakage is avoided.
[0028] A cross shaft seat 706 is fixedly welded to the inner wall of one end of the liquid inlet pipe 3 away from the valve body 1, and the driven shaft 701 is rotatably installed on the cross shaft seat 706. Cross shaft seats 706 are fixedly welded to the inner walls at both ends of the cleaning pipe 5, and the driving shaft 702 is rotatably installed on the cross shaft seat 706.
[0029] By adopting the above technical solution, the stability of the rotation of the driven shaft 701 and the driving shaft 702 is ensured.
[0030] The liquid outlet pipe 2 and the liquid inlet pipe 3 are fixedly connected to the four corners of the valve body 1 through bolts and nuts.
[0031] By adopting the above technical solution, the liquid outlet pipe 2 and the liquid inlet pipe 3 are fixedly installed on both sides of the valve body 1.
[0032] Working principle: First, insert the driving shaft 702 into the corresponding inner groove of the driven shaft 701. Then, use bolts and nuts to fixedly connect the liquid inlet pipe 3 and the cleaning pipe 5 through a flange; similarly, use a flange to connect the cleaning pipe 5 with an external juice conveying pipeline, and connect the liquid outlet pipe 2 with a juice discharging pipeline. When juice needs to be conveyed, refer to Figure 4As shown, the operator holds the handle holder 901 and the lever 908, and places the finger on the lever 908. By applying pressure to the long rod part of the lever 908 with the finger, the lever 908 is flipped around the fixed shaft 907, thereby squeezing the second return spring 909. After the lever 908 is flipped, the lifting plate 904 and the limit bolt 903 are driven by the toggle lever 902 to move upward, while squeezing the first return spring 906. When the limit bolt 903 is completely withdrawn from the limit groove of the limit plate 905, the handle holder 901 is rotated so that the limit bolt 903 moves to the position of another limit groove. Refer to Figure 2 、 Figure 3 As shown, at this time, the handle holder 901 drives the valve ball 4 to rotate 90° through the valve stem 8, so that the ball valve is switched from the closed state to the through state. Finally, the handle holder 901 is released, and the first return spring 906 and the second return spring 909 stretch, pushing the limit bolt 903 into the limit groove, and at the same time the lever 908 flips back to the initial state. When it is necessary to close the ball valve, only need to control the handle holder 901 to return to the original position according to the same steps above; After the ball valve is opened, power is provided by an external drive pump. Refer to Figure 3 As shown, it is pushed to drive the juice to start from the self-cleaning pipe 5, flow through the liquid inlet pipe 3 and the valve ball 4 in sequence, and then be discharged from the liquid outlet pipe 2 into the external conveying pipeline for subsequent processes; The juice fluid entering the cleaning pipe 5 is guided by the spiral flow guide plate 602 to change from the direct current state to the spiral flow, thereby generating centrifugal force. Under the action of the centrifugal force, the outer juice is affected by the outward acting force, and part of it is pushed into the liquid inlet frame 601, and the rest continues to move forward along the cleaning pipe 5 and enters the liquid inlet frame 601. The juice entering the liquid inlet frame 601 then flows into the conical frame 604. In view of the structural characteristics of the large liquid inlet port and small liquid outlet port of the conical frame 604, the juice flow rate is accelerated here. The accelerated juice fluid is transported to the output pipe 603 through the inlet pipe 605. The liquid outlet end of the output pipe 603 is inclined at 30°. Refer to Figure 5 As shown, it is accurately aligned with the eddy current low-speed area at the contact between the valve ball 4 and the valve seat sealing ring 10. The accelerated juice discharged from the output pipe 603 converges and merges with the juice in the cleaning pipe 5, forming a strong impact and agitation on the eddy current low-speed area, effectively destroying the generation of eddy currents and significantly reducing the probability of juice fibers accumulating here; Refer to Figure 3 As shown, the juice flow in the cleaning pipe 5 drives the impeller 705 to rotate. The impeller 705 drives the drive shaft 702 to rotate, and the drive shaft 702 drives the cleaning frame 703 and the cleaning scraper 704 through the driven shaft 701 to continuously rotate at the fitting part between the inner wall of the valve seat sealing ring 10 and the outer wall of the valve ball 4. During this process, the cleaning scraper 704 can efficiently scrape off impurities such as juice fibers and pulp residues attached to these parts, avoiding impurity accumulation.
[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.
Claims
1. A self-cleaning anti-blocking ball valve, comprising a valve body (1), a liquid outlet pipe (2) and a liquid inlet pipe (3), characterized in that: The liquid outlet pipe (2) and the liquid inlet pipe (3) are respectively connected through the two ends of the valve body (1). A valve ball (4) is rotatably arranged inside the valve body (1). A cleaning pipe (5) is arranged at the outer end of the liquid inlet pipe (3). A self-cleaning fluid assembly (6) and a rotary self-cleaning assembly (7) for preventing blockage inside the valve body (1) are respectively arranged in the cleaning pipe (5) and the liquid inlet pipe (3). A valve rod (8) is arranged at the top of the valve ball (4), and the valve rod (8) is rotatably installed on the valve body (1). A handle self-limiting assembly (9) is arranged at the top of the valve rod (8); The self-cleaning fluid assembly (6) includes six liquid inlet frames (601) and spiral flow guide plates (602) distributed in an annular array. The liquid inlet frames (601) are used to divide the juice in the cleaning pipe (5). The spiral flow guide plates (602) are used to change the flow direction of the direct-current juice to form a spiral flow state, so as to promote the outer juice to enter the liquid inlet frames (601). Six output pipes (603) distributed in an annular array are arranged in the liquid inlet pipe (3). The liquid discharge ends of the output pipes (603) are inclined at 30° and penetrate through the inner wall of the cleaning pipe (5). The output pipes (603) are connected through with the liquid inlet frames (601); The rotary self-cleaning assembly (7) includes a driven shaft (701). The driven shaft (701) is rotatably installed at the center of the middle part of the liquid inlet pipe (3). A cleaning frame (703) is fixedly arranged at one end of the driven shaft (701) close to the valve body (1). Six cleaning scrapers (704) distributed in an annular array are fixedly arranged on the outer side of the cleaning frame (703).
2. The self-cleaning and anti-blocking ball valve according to claim 1, characterized in that The handle self-limiting assembly (9) includes a handle frame (901). The handle frame (901) is fixedly installed at the top of the valve rod (8). A lever (902) is rotatably arranged at the top of the handle frame (901). A limit bolt (903) is inserted through one side of the handle frame (901). A lifting plate (904) which is used in cooperation with the lever (902) is fixedly arranged on the outer wall of the limit bolt (903). A limit plate (905) which is used in cooperation with the limit bolt (903) is fixedly arranged on the outer wall of the upper part of the valve body (1). A first return spring (906) is sleeved on the outer wall of the limit bolt (903), and both ends of the first return spring (906) are respectively fixedly connected with the inner wall of the handle frame (901) and the top of the lifting plate (904).
3. The self-cleaning anti-blocking ball valve according to claim 1, characterized in that, Valve seat sealing rings (10) which are used in cooperation with the valve ball (4) to prevent juice leakage are fixedly arranged on the inner walls of the liquid outlet pipe (2) and the liquid inlet pipe (3) close to the valve body (1). The cleaning scrapers (704) are rubber scrapers, and the outer sides of the cleaning scrapers (704) are attached to the inner wall of the valve seat sealing ring (10) and the outer wall of the valve ball (4).
4. The self-cleaning anti-blocking ball valve according to claim 1, characterized in that, A conical frame (604) is connected through the side of the liquid inlet frame (601) close to the liquid inlet pipe (3). The conical frame (604) is of a conical structure and is tapered along the liquid flow direction, that is, it gradually narrows from one end to the other end. The narrow end of the conical frame (604) is connected through with an inlet pipe (605), and the inlet pipe (605) is connected through with the corresponding output pipe (603).
5. The self-cleaning anti-blocking ball valve according to claim 1, characterized in that, A drive shaft (702) is rotatably provided at the axis of the middle part of the cleaning pipe (5). Two limiting strips are fixedly provided on the outer wall of one end of the drive shaft (702) close to the liquid inlet pipe (3). An inner groove which is matched with the drive shaft (702) for convenient installation and use is opened at the center of the end of the driven shaft (701) far away from the cleaning frame (703), and the drive shaft (702) can be inserted into the inner groove. An impeller (705) for driving the drive shaft (702) to rotate is fixedly sleeved in the middle of the outer wall of the drive shaft (702).
6. The self-cleaning anti-blocking ball valve according to claim 2, characterized in that, Two limiting grooves are opened in the limiting plate (905), and the included angle between the central connection lines of the two limiting grooves and the valve rod (8) is 90°. The limiting bolt (903) is inserted into the limiting groove.
7. The self-cleaning anti-blocking ball valve according to claim 6, characterized in that, A fixed shaft (907) is fixedly provided in the middle of the handle frame (901). A lever (908) is rotatably sleeved on the outer wall of the fixed shaft (907). A chute is opened at the top of the lever (908). A guide shaft is fixedly provided at the top of one end of the shift lever (902) close to the lever (908), and the guide shaft slides in the chute. A second return spring (909) for pushing the lever (908) to reset is fixedly provided between the lever (908) and the handle frame (901).
8. The self-cleaning and anti-blocking ball valve according to claim 1, wherein The liquid inlet pipe (3) and the cleaning pipe (5) are connected by a flange connection method, and a rubber sealing ring (606) adapted thereto is provided at the connection part therebetween to ensure the sealing performance of the connection.
9. The self-cleaning anti-blocking ball valve according to claim 1, wherein, A cross shaft seat (706) is fixedly welded on the inner wall of one end of the liquid inlet pipe (3) far away from the valve body (1), and the driven shaft (701) is rotatably installed on the cross shaft seat (706). Cross shaft seats (706) are fixedly welded on the inner walls of both ends of the cleaning pipe (5), and the drive shaft (702) is rotatably installed on the cross shaft seat (706).
10. The self-cleaning anti-blocking ball valve according to claim 1, characterized in that, The liquid outlet pipe (2) and the liquid inlet pipe (3) are fixedly connected to the four corners of the valve body (1) through bolts and nuts.