Anti-blocking ball valve and using method thereof
By setting up an inner sleeve and an outer sleeve in the ball valve and controlling its movement with the drive mechanism, the problem of blockage easily in the long-term closed state of the ball valve is solved, achieving a more convenient drainage process and higher usage efficiency.
Patent Information
- Application Number
- CN202510171614.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-05-06
AI Technical Summary
Existing ball valves are prone to blockage in the casing under long-term closed state and are inconvenient to unblock. Especially in the ball valve structure on the wall of coal powder pipes in power plants, the clogged coal powder leads to the inability to flow normally.
An anti-blocking ball valve is designed. By setting an outer sleeve on the outside of the inner sleeve and controlling the movement of the valve ball and the inner sleeve by using a driving mechanism, the inner sleeve moves reciprocatingly along the valve cavity while closing and opening the ball valve. When the ball valve is closed, the end faces of the inner sleeve and the outer sleeve are staggered to avoid blockage; when opened, the inner sleeve moves to push away the impurities on the inner wall of the outer sleeve to clear the blockage.
It effectively avoids blockage of the ball valve under long-term closed state, simplifies the drainage process, reduces the workload of technicians, and improves the efficiency of the ball valve.
Smart Images
Figure CN119934256A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of anti-blocking ball valves, and in particular to an anti-blocking ball valve and a use method thereof. Background Art
[0002] Ball valves are widely used in power, chemical, metallurgy, petroleum and other industries due to their simple structure, convenient operation, good sealing and wide application range. In the process of using, the existing ball valve structure is easy to form blockage in the casing when it is closed for a long time due to the high viscosity of some media and the properties of easy agglomeration. After opening, the medium cannot flow normally and it is extremely inconvenient to dredge, which greatly increases the workload of technicians. Especially for the ball valve structure on the wall of the coal powder pipe commonly used in power plants, a large amount of coal powder accumulates in the valve casing due to being in a closed state for a long time. After opening, it will not flow smoothly due to blockage. Summary of the invention
[0003] The object of the present invention is to provide an anti-blocking ball valve to solve the problem in the prior art that the ball valve structure is prone to blockage in the casing and is inconvenient to clear when in a long-term closed state.
[0004] In order to solve the above problems, the present invention proposes an anti-blocking ball valve, and the technical solution adopted is: A ball valve with anti-blocking function, comprising a valve body mechanism, a driving mechanism and a valve ball, wherein the valve body mechanism comprises an inner sleeve and an outer sleeve which is sleeved on the outer side of the inner sleeve, a valve cavity with openings at both ends is formed inside the inner sleeve and a seal is arranged between the inner sleeve and the outer sleeve, the valve ball is fixedly connected to the driving mechanism and rotatably arranged in the valve cavity, the driving mechanism controls the valve ball to realize closing and opening of the ball valve and drives the inner sleeve to reciprocate axially along the valve cavity relative to the outer sleeve, a flow hole is arranged in the valve ball, and when the ball valve is closed, the driving mechanism controls the valve ball to rotate to the flow hole It is in a position perpendicular to the valve cavity, and drives the inner sleeve to move relative to the outer sleeve along the axial direction of the valve cavity toward one end of the valve cavity, so that at the other end of the valve cavity, the end face of the inner sleeve is staggered with the end face of the outer sleeve and is located in the tube body of the outer sleeve; when the ball valve is opened, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are coaxial, and drives the inner sleeve to move relative to the outer sleeve along the axial direction of the valve cavity toward the other end of the valve cavity, and at the same time pushes away impurities on the inner wall of the outer sleeve at this end, so that at this end of the valve cavity, the end face of the inner sleeve is flush with the end face of the outer sleeve.
[0005] Furthermore, the inner sleeve is axially provided with a first contact surface and a second contact surface relatively to each other, and the outer sleeve is axially provided with a third contact surface and a fourth contact surface relatively to each other. When the ball valve is closed, the first contact surface moves axially toward one end of the valve cavity along the valve cavity so that the first contact surface and the third contact surface are stopped and matched along the axial direction of the valve cavity, and a sealing state is formed between the first contact surface and the third contact surface at this end; when the ball valve is opened, the second contact surface moves axially toward the other end of the valve cavity along the valve cavity so that the second contact surface and the fourth contact surface are stopped and matched along the axial direction of the valve cavity, and a sealing state is formed between the second contact surface and the fourth contact surface at this end.
[0006] Further, the inner sleeve includes a first large diameter tube body and a first small diameter tube body arranged at both ends of the first large diameter tube body, the first contact surface and the second contact surface are respectively arranged at the connection between the first large diameter tube body and the first small diameter tube body, the outer sleeve includes a second large diameter tube body and a second small diameter tube body arranged at both ends of the second large diameter tube body, and the third contact surface and the fourth contact surface are respectively arranged at the connection between the second large diameter tube body and the second small diameter tube body.
[0007] Further, the first contact surface and the second contact surface are respectively a first arcuate contact surface and a second arcuate contact surface, and the third contact surface and the fourth contact surface are respectively a third arcuate contact surface and a fourth arcuate contact surface.
[0008] Furthermore, the driving mechanism includes a rotating mechanism and a transmission structure, the valve ball is fixedly connected to the rotating mechanism, the rotating mechanism controls the valve ball to close and open the ball valve, and at the same time drives the inner sleeve to reciprocate axially along the valve cavity relative to the outer sleeve through the transmission structure.
[0009] Furthermore, the transmission structure includes a circular gear arranged on the rotating mechanism and a bar tooth opened on the side wall of the inner sleeve along the axial direction of the inner sleeve, and the circular gear is installed in the bar tooth and meshes with the bar tooth.
[0010] Furthermore, the rotating mechanism comprises a rotating handle and a rotating rod connected to the rotating handle, the valve ball is arranged on an end of the rotating rod away from the rotating handle, and the circular gear is arranged on the rotating rod.
[0011] Furthermore, an access hole corresponding to the bar teeth is opened on the side wall of the outer sleeve, and the rotating rod passes through the access hole and is gear-engaged with the bar teeth through a circular gear.
[0012] Furthermore, the axial length of the first large diameter tube body is smaller than that of the second large diameter tube body, the axial length of the first small diameter tube body is larger than that of the second small diameter tube body, and the axial lengths of the inner sleeve and the outer sleeve are equal.
[0013] Beneficial effects: The present invention is an improved invention. The present invention arranges an inner sleeve and an outer sleeve sleeved outside the inner sleeve, and controls the valve ball through a driving mechanism to realize the closing and opening of the ball valve, while driving the inner sleeve to move back and forth along the axial direction of the valve cavity relative to the outer sleeve. When the ball valve is closed, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are perpendicular, and drives the inner sleeve to move toward one end of the valve cavity along the axial direction of the valve cavity relative to the outer sleeve, so that the end face of the inner sleeve at the other end of the valve cavity is staggered with the end face of the outer sleeve and is located in the tube body of the outer sleeve; when the ball valve is opened, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are perpendicular, and drives the inner sleeve to move toward one end of the valve cavity along the axial direction of the valve cavity relative to the outer sleeve, so that the end face of the inner sleeve is staggered with the end face of the outer sleeve at the other end of the valve cavity and is located in the tube body of the outer sleeve; when the ball valve is opened, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are perpendicular, and drives the inner sleeve to move toward one end of the valve cavity along the axial direction of the valve cavity relative to the outer sleeve. The structure controls the valve ball to rotate to a position where the flow hole and the valve cavity are coaxial, and drives the inner sleeve to move relative to the outer sleeve along the axial direction of the valve cavity toward the other end of the valve cavity, pushing away the coal powder on the inner wall of the outer sleeve at this end, so that the blocked coal powder block is partially cleared out of the outer sleeve. Since the blocked coal powder was originally a whole and was not easy to dredge, and the part of the coal powder in contact with the inner wall of the inner sleeve was firmly in contact due to viscosity, by clearing the coal powder blocks on the inner wall of the outer sleeve, the part of the coal powder in contact with the inner wall of the inner sleeve is also cleared out of the inner sleeve, so that the blocked columnar coal powder blocks are broken up, greatly reducing the difficulty of subsequent dredging.
[0014] The present invention also provides a method for using an anti-blocking ball valve, which is used for using the anti-blocking ball valve, and comprises the following steps: When the ball valve is closed, the driving mechanism controls the valve ball to rotate to a position where the flow hole is perpendicular to the valve cavity, and drives the inner sleeve to move relative to the outer sleeve along the axial direction of the valve cavity toward one end of the valve cavity, so that at the other end of the valve cavity, the end surface of the inner sleeve is staggered with the end surface of the outer sleeve and is located in the tube body of the outer sleeve; When the ball valve is opened, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are coaxial, and drives the inner sleeve to move axially toward the other end of the valve cavity relative to the outer sleeve, while pushing away impurities on the inner wall of the outer sleeve at this end, so that the end face of the inner sleeve is flush with the end face of the outer sleeve at this end position of the valve cavity.
[0015] The inner sleeve is axially provided with a first contact surface and a second contact surface, and the outer sleeve is axially provided with a third contact surface and a fourth contact surface. When the ball valve is closed, the first contact surface moves axially toward one end of the valve cavity along the valve cavity so that the first contact surface and the third contact surface are matched along the axial stop of the valve cavity, and a sealing state is formed between the first contact surface and the third contact surface at this end; when the ball valve is opened, the second contact surface moves axially toward the other end of the valve cavity along the valve cavity so that the second contact surface and the fourth contact surface are matched along the axial stop of the valve cavity, and a sealing state is formed between the second contact surface and the fourth contact surface at this end. This structure only needs to realize single-sided sealing between the inner sleeve and the outer sleeve through axial movement of the inner sleeve, and the structure is simple.
[0016] The inner sleeve includes a first large diameter tube body and a first small diameter tube body arranged at both ends of the first large diameter tube body, the first contact surface and the second contact surface are respectively arranged at the connection between the first large diameter tube body and the first small diameter tube body, the outer sleeve includes a second large diameter tube body and a second small diameter tube body arranged at both ends of the second large diameter tube body, the third contact surface and the fourth contact surface are respectively arranged at the connection between the second large diameter tube body and the second small diameter tube body, the structure is simple and the sealing performance is better.
[0017] The first contact surface and the second contact surface are respectively the first arcuate contact surface and the second arcuate contact surface, and the third contact surface and the third contact surface are respectively the third arcuate contact surface and the fourth arcuate contact surface. The arcuate surfaces can more conveniently guide the inner sleeve and the outer sleeve.
[0018] The transmission structure includes a circular gear arranged on the rotating mechanism and a bar tooth opened on the side wall of the inner sleeve along the axial direction of the inner sleeve. The circular gear is installed in the bar tooth and meshes with the bar tooth, which is convenient for driving the axial movement of the inner sleeve and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 1 is a schematic structural diagram of the anti-blocking ball valve in Embodiment 1 of the anti-blocking ball valve of the present invention; Figure 2 It is a schematic structural diagram of an inner sleeve in Embodiment 2 of the anti-blocking ball valve of the present invention; Figure 3 It is a structural schematic diagram of the outer sleeve in Example 2 of the anti-blocking ball valve of the present invention; Figure 4 It is a structural schematic diagram of a driving mechanism and a valve ball in Embodiment 3 of an anti-blocking ball valve of the present invention; Figure 5 It is a schematic structural diagram of the gear meshing portion in Embodiment 3 of the anti-blocking ball valve of the present invention; Figure 6 Schematic diagram of the anti-blocking ball valve in the closed state in Example 1 of the method for using the anti-blocking ball valve of the present invention; Figure 7 Schematic diagram of the anti-blocking ball valve in the open state in Example 1 of the method for using the anti-blocking ball valve of the present invention; In the figure, 1, inner sleeve, 11, first small diameter tube body, 12, first arcuate contact surface, 13, second arcuate contact surface, 14, first large diameter tube body, 2, outer sleeve, 21, second small diameter tube body, 22, third arcuate contact surface, 23, fourth arcuate contact surface, 24, second large diameter tube body, 3, driving mechanism, 31, rotating handle, 32, rotating rod, 4, valve ball, 41, flow hole, 5, bar teeth, 6, access hole, 7, circular gear. DETAILED DESCRIPTION
[0020] As cited in the background technology, the ball valve structure in the prior art is prone to blockage in the sleeve when in a long-term closed state and is inconvenient to clear. Therefore, the present invention provides an anti-blocking ball valve, including a valve body mechanism, a driving mechanism and a valve ball. The valve body mechanism includes an inner sleeve and an outer sleeve sleeved on the outside of the inner sleeve. A valve cavity with two ends opened is formed inside the inner sleeve and a sealing arrangement is provided between the inner sleeve and the outer sleeve, so that the anti-blocking ball valve can avoid leakage or introduction of impurities during use; the valve ball is fixedly connected to the driving mechanism and rotatably arranged in the valve cavity, and is used to achieve the closed state and the open state of the anti-blocking ball valve. The driving mechanism is used to control the valve ball to achieve the closing and opening of the ball valve while driving the inner sleeve to reciprocate along the axial direction of the valve cavity relative to the outer sleeve; a flow hole is provided in the valve ball. When the ball valve is closed, the driving mechanism controls the valve ball to rotate to a position where the flow hole is vertical to the valve cavity, so that the ball valve is in a closed state. The driving mechanism drives the inner sleeve to move toward one end of the valve cavity along the axial direction of the valve cavity relative to the outer sleeve, so that the end face of the inner sleeve at the other end of the valve cavity is aligned with the end face of the outer sleeve. When the valve is closed, the inner sleeve moves along the axial direction of the valve cavity to the other end of the valve cavity. When the valve is closed, the inner sleeve moves along the axial direction of the valve cavity to the other end of the valve cavity to push away the coal powder on the inner wall of the outer sleeve at this end while moving relative to the outer sleeve. The blocked coal powder is originally a whole and is not easy to dredge. The part of the coal powder in contact with the inner wall of the inner sleeve is firmly in contact due to viscosity. By removing the coal powder blocks on the inner wall of the outer sleeve, the part of the coal powder in contact with the inner wall of the inner sleeve is also removed from the inner sleeve, so that the blocked columnar coal powder blocks are broken up, which greatly reduces the difficulty of subsequent dredging.
[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0022] Specific embodiment 1 of the anti-blocking ball valve of the present invention: In this embodiment, Figures 1 to 4 As shown, the anti-blocking ball valve includes a valve body mechanism, a driving mechanism 3 and a valve ball 4. The valve body mechanism includes an inner sleeve 1 and an outer sleeve 2 sleeved on the outside of the inner sleeve 1. A valve cavity with openings at both ends is formed inside the inner sleeve 1, and a seal is arranged between the inner sleeve 1 and the outer sleeve 2. The valve ball 4 is fixedly connected to the driving mechanism 3 and rotatably arranged in the valve cavity. The driving mechanism 3 controls the valve ball 4 to close and open the ball valve while driving the inner sleeve 1 to reciprocate along the axial direction of the valve cavity relative to the outer sleeve 2. A flow hole 41 is arranged in the valve ball 4. When the ball valve is closed, the driving mechanism 3 controls the valve ball 4 to rotate to the flow hole 41 and the valve The cavity is in a vertical position, and the inner sleeve 1 is driven to move relative to the outer sleeve 2 along the axial direction of the valve cavity toward the right end of the valve cavity, so that at the left end of the valve cavity, the end face of the inner sleeve 1 is staggered with the end face of the outer sleeve 2 and is located in the tube body of the outer sleeve 2; when the ball valve is opened, the driving mechanism 3 controls the valve ball 4 to rotate to a position where the flow hole 41 is coaxial with the valve cavity, and drives the inner sleeve 1 to move relative to the outer sleeve 2 along the axial direction of the valve cavity toward the left end of the valve cavity, and at the same time pushes away the impurities on the inner wall of the outer sleeve 2 at the left end of the valve cavity, so that at this end position of the valve cavity, the end face of the inner sleeve 1 is flush with the end face of the outer sleeve 2.
[0023] The inner sleeve 1 is axially provided with a first contact surface and a second contact surface, and the outer sleeve 2 is axially provided with a third contact surface and a fourth contact surface. When the ball valve is closed, the first contact surface moves axially toward the right end of the valve cavity along the valve cavity so that the first contact surface and the third contact surface are stopped along the axial direction of the valve cavity, and a sealing state is formed between the first contact surface and the third contact surface at the right end of the valve cavity; when the ball valve is opened, the second contact surface moves axially toward the left end of the valve cavity along the valve cavity so that the second contact surface and the fourth contact surface are stopped along the axial direction of the valve cavity, and a sealing state is formed between the second contact surface and the fourth contact surface at the left end of the valve cavity.
[0024] In other embodiments, a seal may be provided between the inner sleeve 1 and the outer sleeve 2 at the location where the valve ball 4 is provided.
[0025] Specific embodiment 2 of the anti-blocking ball valve of the present invention: Based on the above technical concept of the present invention, or based on the above specific embodiment of the present invention, another embodiment is provided below.
[0026] In this embodiment, Figure 2 and Figure 3As shown, the inner sleeve 1 includes a first large diameter tube body 14 and a first small diameter tube body 11 disposed at both ends of the first large diameter tube body 14, and the first contact surface and the second contact surface are disposed at the connection between the first large diameter tube body 14 and the first small diameter tube body 11 respectively; the outer sleeve 2 includes a second large diameter tube body 24 and a second small diameter tube body 21 disposed at both ends of the second large diameter tube body 24, and the third contact surface and the fourth contact surface are disposed at the connection between the second large diameter tube body 24 and the second small diameter tube body 21 respectively. Specifically, the first contact surface and the second contact surface are the first arcuate contact surface 12 and the second arcuate contact surface 13 respectively, and the third contact surface and the third contact surface are the third arcuate contact surface 22 and the fourth arcuate contact surface 23 respectively. At this time, the axial length of the first large diameter tube body 14 is less than the axial length of the second large diameter tube body 24, and the axial length of the first small diameter tube body 11 is greater than the axial length of the second small diameter tube body 21; the axial lengths of the inner sleeve 1 and the outer sleeve 2 are equal.
[0027] In other embodiments, the first contact surface and the second contact surface are respectively the first right-angle contact surface and the second right-angle contact surface, and the third contact surface and the fourth contact surface are respectively the third right-angle contact surface and the fourth right-angle contact surface. In this case, the axial length of the first large-diameter tube body 14 is equal to the axial length of the second large-diameter tube body 24, and the axial length of the first small-diameter tube body 11 is equal to the axial length of the second small-diameter tube body 21.
[0028] In other embodiments, the first contact surface and the second contact surface are respectively the first arcuate contact surface 12 and the first right-angle contact surface, and the third contact surface and the fourth contact surface are respectively the second arcuate contact surface 13 and the second right-angle contact surface corresponding to the first arcuate contact surface 12 and the first right-angle contact surface. At this time, the axial length of the first large-diameter tube body 14 is smaller than the axial length of the second large-diameter tube body 24, and the axial length of the first small-diameter tube body 11 is greater than the axial length of the second small-diameter tube body 21.
[0029] In other embodiments, the axial lengths of the inner sleeve 1 and the outer sleeve 2 may be unequal.
[0030] Specific embodiment 3 of the anti-blocking ball valve of the present invention: Based on the above technical concept of the present invention, or based on the above specific embodiment of the present invention, another embodiment is provided below.
[0031] In this embodiment, Figure 4 and Figure 5As shown, the driving mechanism 3 includes a rotating mechanism and a transmission structure, the valve ball 4 is fixedly connected to the rotating mechanism, the rotating mechanism controls the valve ball 4 to close and open the ball valve, and drives the inner sleeve 1 to move back and forth along the axial direction of the valve cavity relative to the outer sleeve 2 through the transmission structure. Specifically, the transmission structure includes a circular gear 7 arranged on the rotating mechanism and a bar tooth 5 opened on the side wall of the inner sleeve 1 along the axial direction of the inner sleeve 1, the circular gear 7 is installed in the bar tooth 5 and is gear-engaged with the bar tooth 5. An access hole 6 corresponding to the bar tooth 5 is opened on the side wall of the outer sleeve 2, the rotating mechanism includes a rotating handle 31 and a rotating rod 32 connected to the rotating handle 31, the valve ball 4 is arranged on the rotating rod 32 at one end away from the rotating handle 31, the circular gear 7 is arranged on the rotating rod 32, the rotating rod 32 passes through the access hole 6 and is gear-engaged with the bar tooth 5 through the circular gear 7. When in use, the access hole 6 limits the rotating rod 32 from axial displacement along the valve cavity. The rotating handle 31 rotates to drive the rotating rod 32 to rotate, and then the valve ball 4 is controlled to rotate axially around the rotating rod 32 through the rotating rod 32. At the same time, the circular gear 7 on the rotating rod 32 is engaged with the bar tooth 5 to drive the inner sleeve 1 to reciprocate axially along the valve cavity relative to the outer sleeve 2.
[0032] Specific embodiment 1 of the method for using the anti-blocking ball valve of the present invention: In this embodiment, Figure 6 and Figure 7 As shown, the use of the anti-blocking ball valve mentioned above, the method of using the anti-blocking ball valve includes the following steps: When the ball valve is closed, the driving mechanism 3 controls the valve ball 4 to rotate to a position where the flow hole 41 is perpendicular to the valve cavity, and drives the inner sleeve 1 to move relative to the outer sleeve 2 along the axial direction of the valve cavity toward the right end of the valve cavity, so that at the left end of the valve cavity, the end surface of the inner sleeve 1 is offset from the end surface of the outer sleeve 2 and is located in the tube body of the outer sleeve 2; When the ball valve is opened, the driving mechanism 3 controls the valve ball 4 to rotate to a position where the flow hole 41 is coaxial with the valve cavity, and drives the inner sleeve 1 to move axially toward the left end of the valve cavity relative to the outer sleeve 2 along the valve cavity, while pushing away impurities on the inner wall of the outer sleeve 2 at the left end of the valve cavity, so that the end face of the inner sleeve 1 is flush with the end face of the outer sleeve 2 at the left end of the valve cavity.
[0033] Specifically, when the ball valve is closed, the rotary handle 31 rotates, and the valve ball 4 is controlled by the rotary rod 32 to rotate to a position where the flow hole 41 is vertical to the valve cavity. At this time, the fluid cannot pass through. At the same time, the circular gear 7 on the rotary rod 32 drives the inner sleeve 1 to move relative to the outer sleeve 2 along the axial direction of the valve cavity toward the right end of the valve cavity, so that at the left end of the valve cavity, the end face of the inner sleeve 1 is offset from the end face of the outer sleeve 2 and is located in the tube body of the outer sleeve 2. At this time, the circular gear 7 is located at the left end of the bar tooth 5, and the first arcuate contact surface 12 and the third arcuate contact surface 22 are matched along the axial direction of the valve cavity, and a sealing state is formed between the first arcuate contact surface 12 and the third arcuate contact surface 22 at the right end.
[0034] When the ball valve is closed, the rotary handle 31 rotates, and the valve ball 4 is controlled by the rotary rod 32 to rotate to a position where the flow hole 41 is coaxial with the valve cavity. At this time, the fluid can pass through the flow hole 41, and at the same time, the circular gear 7 on the rotary rod 32 drives the inner sleeve 1 to move relative to the outer sleeve 2 along the axial direction of the valve cavity toward the left end of the valve cavity. At the same time, the inner sleeve 1 pushes away impurities on the inner wall of the outer sleeve 2 at the left end, so that the end face of the inner sleeve 1 is flush with the end face of the outer sleeve 2 at the left end of the valve cavity. At this time, the circular gear 7 moves from the left end of the bar tooth 5 to the right, and the second arcuate contact surface 13 and the fourth arcuate contact surface 23 are matched along the axial direction of the valve cavity, and a sealing state is formed between the second arcuate contact surface 13 and the fourth arcuate contact surface 23 at the left end.
[0035] Through the above description of the specific embodiments of the anti-blocking ball valve of the present invention, it can be seen that the anti-blocking ball valve of the present invention includes a valve body mechanism, a driving mechanism and a valve ball. The valve body mechanism includes an inner sleeve and an outer sleeve ringed on the outside of the inner sleeve. A valve cavity with openings at both ends is formed inside the inner sleeve, and a sealing arrangement is provided between the inner sleeve and the outer sleeve, so that the anti-blocking ball valve can avoid leakage or introduction of impurities during use; the valve ball is fixedly connected to the driving mechanism and rotatably arranged in the valve cavity, which is used to realize the closed state and the open state of the anti-blocking ball valve, and the driving mechanism is used to control the valve ball to realize the closing and opening of the ball valve while driving the inner sleeve to reciprocate along the axial direction of the valve cavity relative to the outer sleeve; a flow hole is provided in the valve ball, and when the ball valve is closed, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are perpendicular, so that the ball valve is in a closed state, and the driving mechanism drives the inner sleeve to move toward one end of the valve cavity along the axial direction of the valve cavity relative to the outer sleeve, so that the inner sleeve at the other end of the valve cavity is closed. The end face of the sleeve is staggered with the end face of the outer sleeve and is located in the tube body of the outer sleeve; when the ball valve is opened, the driving mechanism controls the valve ball to rotate to a position where the flow hole and the valve cavity are coaxial, so that the ball valve is in an open state, and the driving mechanism drives the inner sleeve to move relative to the outer sleeve along the axial direction of the valve cavity toward the other end of the valve cavity. During the closed use process, impurities such as coal powder will accumulate on the inner wall of the outer sleeve at this end and the inner wall of the inner sleeve. While the inner sleeve moves relative to the outer sleeve along the axial direction of the valve cavity toward the other end of the valve cavity, the coal powder on the inner wall of the outer sleeve at this end is pushed away, so that part of the blocked coal powder blocks are cleared out of the outer sleeve. Since the blocked coal powder was originally a whole and was not easy to dredge, and the part of the coal powder in contact with the inner wall of the inner sleeve is firmly in contact due to viscosity, by removing the coal powder blocks on the inner wall of the outer sleeve, part of the coal powder in contact with the inner wall of the inner sleeve is also cleared out of the inner sleeve, so that the blocked columnar coal powder blocks are broken up, which greatly reduces the difficulty of subsequent dredging.
[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.
Claims
1. An anti-blocking ball valve, characterized in that: The invention comprises a valve body mechanism, a driving mechanism (3) and a valve ball (4), wherein the valve body mechanism comprises an inner sleeve (1) and an outer sleeve (2) sleeved on the outer side of the inner sleeve (1), wherein a valve cavity with openings at both ends is formed inside the inner sleeve (1), and the inner sleeve (1) and the outer sleeve (2) are sealed, wherein the valve ball (4) is fixedly connected to the driving mechanism (3) and rotatably arranged in the valve cavity, wherein the driving mechanism (3) controls the valve ball (4) to close and open the ball valve and drives the inner sleeve (1) to move back and forth along the axial direction of the valve cavity relative to the outer sleeve (2), wherein the valve ball (4) is provided with a flow hole (41), and when the ball valve is closed, the driving mechanism (3) controls the valve ball (4) to rotate to the flow hole (41). The through hole (41) is in a vertical position with respect to the valve cavity, and drives the inner sleeve (1) to move relative to the outer sleeve (2) along the axial direction of the valve cavity toward one end of the valve cavity, so that at the other end of the valve cavity, the end surface of the inner sleeve (1) is offset from the end surface of the outer sleeve (2) and is located in the tube body of the outer sleeve (2); when the ball valve is opened, the driving mechanism (3) controls the valve ball (4) to rotate to a position where the flow hole (41) is coaxial with the valve cavity, and drives the inner sleeve (1) to move relative to the outer sleeve (2) along the axial direction of the valve cavity toward the other end of the valve cavity, and simultaneously pushes away impurities on the inner wall of the outer sleeve (2) at this end, so that at this end of the valve cavity, the end surface of the inner sleeve (1) is flush with the end surface of the outer sleeve (2).
2. The anti-blocking ball valve according to claim 1, characterized in that: The inner sleeve (1) is provided with a first contact surface and a second contact surface in an axial direction, and the outer sleeve (2) is provided with a third contact surface and a fourth contact surface in an axial direction. When the ball valve is closed, the first contact surface moves along the axial direction of the valve cavity toward one end of the valve cavity so that the first contact surface and the third contact surface are stopped and matched along the axial direction of the valve cavity, and a sealing state is formed between the first contact surface and the third contact surface at this end. When the ball valve is opened, the second contact surface moves along the axial direction of the valve cavity toward the other end of the valve cavity so that the second contact surface and the fourth contact surface are stopped and matched along the axial direction of the valve cavity, and a sealing state is formed between the second contact surface and the fourth contact surface at this end.
3. The anti-blocking ball valve according to claim 2, characterized in that: The inner sleeve (1) comprises a first large-diameter tube body (14) and a first small-diameter tube body (11) arranged at both ends of the first large-diameter tube body (14); the first contact surface and the second contact surface are respectively arranged at the connection between the first large-diameter tube body (14) and the first small-diameter tube body (11); the outer sleeve (2) comprises a second large-diameter tube body (24) and a second small-diameter tube body (21) arranged at both ends of the second large-diameter tube body (24); the third contact surface and the fourth contact surface are respectively arranged at the connection between the second large-diameter tube body (24) and the second small-diameter tube body (21).
4. The anti-blocking ball valve according to claim 3, characterized in that: The first contact surface and the second contact surface are respectively a first arcuate contact surface (12) and a second arcuate contact surface (13); the third contact surface and the fourth contact surface are respectively a third arcuate contact surface (22) and a fourth arcuate contact surface (23).
5. The anti-blocking ball valve according to claim 1, characterized in that: The driving mechanism (3) comprises a rotating mechanism and a transmission structure, the valve ball (4) being fixedly connected to the rotating mechanism, the rotating mechanism controlling the valve ball (4) to close and open the ball valve, while driving the inner sleeve (1) to move back and forth relative to the outer sleeve (2) along the axial direction of the valve cavity through the transmission structure.
6. The anti-blocking ball valve according to claim 5, characterized in that: The transmission structure comprises a circular gear (7) arranged on the rotating mechanism and a bar tooth (5) provided on the side wall of the inner sleeve (1) along the axial direction of the inner sleeve (1); the circular gear (7) is installed in the bar tooth (5) and is in gear meshing with the bar tooth (5).
7. The anti-blocking ball valve according to claim 6, characterized in that: The rotating mechanism comprises a rotating handle (31) and a rotating rod (32) connected to the rotating handle (31); the valve ball (4) is arranged on an end of the rotating rod (32) away from the rotating handle (31); and the circular gear (7) is arranged on the rotating rod (32).
8. The anti-blocking ball valve according to claim 7, characterized in that: An access hole (6) corresponding to the bar teeth (5) is provided on the side wall of the outer sleeve (2); the rotating rod (32) passes through the access hole (6) and is meshed with the bar teeth (5) via a circular gear (7).
9. The anti-blocking ball valve according to claim 4, characterized in that: The axial length of the first large-diameter tube (14) is smaller than the axial length of the second large-diameter tube (24), the axial length of the first small-diameter tube (11) is larger than the axial length of the second small-diameter tube (21), and the axial lengths of the inner sleeve (1) and the outer sleeve (2) are equal.
10. A method for using the anti-blocking ball valve according to any one of claims 1 to 9, characterized in that: The steps include: When the ball valve is closed, the drive mechanism (3) controls the valve ball (4) to rotate to a position where the flow hole (41) is perpendicular to the valve cavity, and drives the inner sleeve (1) to move relative to the outer sleeve (2) along the axial direction of the valve cavity toward one end of the valve cavity, so that at the other end of the valve cavity, the end surface of the inner sleeve (1) is offset from the end surface of the outer sleeve (2) and is located in the tube body of the outer sleeve (2); When the ball valve is opened, the driving mechanism (3) controls the valve ball (4) to rotate to a position where the flow hole (41) is coaxial with the valve cavity, and drives the inner sleeve (1) to move relative to the outer sleeve (2) along the axial direction of the valve cavity toward the other end of the valve cavity, while pushing away impurities on the inner wall of the outer sleeve (2) at this end, so that the end surface of the inner sleeve (1) is flush with the end surface of the outer sleeve (2) at this end position of the valve cavity.