CN220037509U

CN220037509U - Ball valve

Info

Publication number: CN220037509U
Application number: CN202321436748.7U
Authority: CN
Inventors: 洪俊瑜; 吴鹏程; 陈新刚
Original assignee: Fujian Zhente Valve Technology Co ltd
Current assignee: Fujian Zhente Valve Technology Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2023-11-17
Anticipated expiration: 2033-06-07

Abstract

The utility model provides a ball valve, includes valve body, actuating mechanism, valve rod and sealing member, the sealing member sets up the lower extreme at the valve rod, and actuating mechanism can drive the valve rod and go up and down and rotate so that the sealing member switches between open state and sealing state, its characterized in that: the driving mechanism comprises an external thread formed on the valve rod, a nut which is rotatably arranged on the valve body and matched with the external thread, a driving assembly for driving the nut to rotate, a non-slip piece arranged on the valve rod and a guiding structure for guiding the valve rod to lift and rotate.

Description

Ball valve

Technical Field

The utility model relates to a ball valve.

Background

The Chinese patent document CN216519708U discloses a lifting rod dust-proof ball valve, which comprises an inlet valve cover, a middle valve body and an outlet valve cover, wherein flanges which are locked through bolts are respectively arranged between the inlet valve cover and the middle valve body as well as between the inlet valve cover and the outlet valve cover, a sealing middle hole pad is additionally arranged between the two contact surfaces between the inlet valve cover and the middle valve body as well as between the inlet valve cover and the outlet valve cover and is locked through the bolts, and an inner cavity of the middle valve body is provided with a special-shaped sphere with a telescopic function. This stalk dust-proof ball valve lifts the valve rod through anticlockwise rotation hand wheel, makes special-shaped spheroid shrink and break away from disk seat sealing position, then rotates the operating handle and makes unsettled special-shaped spheroid rotate 90 degrees, and the circulation of fluid is convenient for, otherwise, makes special-shaped spheroid rotatory 90 degrees through clockwise pushing the operating handle, and then clockwise rotation hand wheel makes the valve rod descend, makes special-shaped spheroid strut and closely laminate with disk seat sealing position, accomplishes and closes sealed operation, but above-mentioned ball valve needs manual rotation operating handle to make spheroid rotation control flow or seal first, and the rethread hand wheel control valve rod goes up and down, and the step is loaded down with trivial details and the easy hourglass that appears.

Disclosure of Invention

The utility model aims to provide a ball valve convenient to operate aiming at the defects of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a ball valve, includes valve body, actuating mechanism, valve rod and sealing member, the sealing member sets up the lower extreme at the valve rod, and actuating mechanism can drive the valve rod and go up and down and rotate so that the sealing member switches between open state and sealing state, its characterized in that: the driving mechanism comprises an external thread formed on the valve rod, a nut which is rotatably arranged on the valve body and matched with the external thread, a driving assembly for driving the nut to rotate, a non-slip piece arranged on the valve rod and a guiding structure for guiding the valve rod to lift and rotate.

The guide structure comprises an L-shaped hole arranged on the valve body and a cross rod arranged on the valve rod and crossing the L-shaped hole, the L-shaped hole comprises a vertical section and a transverse section transversely and horizontally extending from the upper end of the vertical section, when the cross rod moves to the uppermost end of the vertical section, the anti-slip piece is tightly propped against the nut, and the cross rod and the valve rod are fixedly connected and move along with the valve rod, so that the cross rod and the vertical section are matched to guide the valve rod to move only in a lifting manner, and the transverse section is used for avoiding the cross rod when the valve rod rotates.

The valve body is provided with the tubular bracket for the valve rod to pass through, the L-shaped hole is formed on the wall of the tubular bracket, the structure is more beneficial to processing of the L-shaped hole, and the cross rod is better matched with the L-shaped hole.

The non-slip piece is an annular body sleeved on the valve rod, the upper end face of the annular body can be tightly propped against the lower end face of the nut, and the annular body can be fixed on the valve rod in a sleeved mode, so that the non-slip piece is convenient to assemble and disassemble, the upper end face of the annular body is tightly propped against the lower end face of the nut, the annular body and the nut have enough contact area, friction force between the annular body and the nut is increased, and the annular body cannot slide relative to the nut.

The cross rod transversely passes through the sliding-stopping piece and the valve rod, so that the cross rod can be fixed, the sliding-stopping piece can be fixed, the whole structure is simpler, and the assembly is more convenient.

The cross rod comprises a fixed section and an extending section, a protruding limiting part is formed between the fixed section and the extending section, the fixed section transversely penetrates through the non-slip piece and is locked and fixed through a first nut after passing through the valve rod, one end, away from the limiting part, of the fixed section is provided with a first external thread matched with the first nut, the extending section transversely penetrates through the L-shaped hole, the transverse position of the cross rod can be fixed after the first nut is locked, the cross rod is prevented from transversely sliding, and the structure can be convenient for assembling products.

The driving assembly comprises a motor and a transmission mechanism connected between the motor and the nut, so that the motor can drive the nut to rotate through the transmission mechanism, electric driving of the ball valve is realized, and manual operation is not needed.

The sealing element is a spheroid, the spheroid has a channel and a sealing surface which transversely penetrate, a deformation notch is formed in the spheroid, the valve rod is connected with the deformation notch of the spheroid through the expansion mechanism, the valve body is provided with a diversion opening opposite to the sealing element, when the valve rod moves downwards, the spheroid can be unfolded through the expansion mechanism to seal the diversion opening, and the spheroid structure can be beneficial to deformation expansion or contraction of the sealing element.

The expansion mechanism comprises an expansion piece, two transmission pieces and two through slotted holes, wherein the two through slotted holes are formed on the expansion piece in bilateral symmetry, the through slotted holes are long holes which are obliquely arranged, the two transmission pieces are respectively arranged at two ends of a deformation notch of the spheroid and are positioned in the long holes, a valve rod is fixedly connected with the expansion piece of the expansion mechanism through a pin, the expansion piece applies force to the two transmission pieces to drive the spheroid to expand so as to seal a diversion port, and the symmetrical design of the two transmission pieces and the two through slotted holes is beneficial to the force acting on the sealing piece to be more uniform.

When the cross rod is positioned at one end of the transverse section far away from the vertical section, the channel of the spheroid is opposite to the diversion opening, the sealing element is in an open state, when the ball valve needs to be closed, the valve rod drives the cross rod to move to the upper end of the vertical section, the spheroid rotates by 90 degrees, the sealing surface of the spheroid is opposite to the diversion opening, the valve rod moves downwards to enable the spheroid to prop open to seal the diversion opening through the expansion mechanism, and the whole process can seal or open the diversion opening only through one operation step.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a ball valve.

Fig. 2 is a partial enlarged view of fig. 1.

Fig. 3 is a schematic structural view of a cylindrical stent.

FIG. 4 is a schematic illustration of the connection of the seal and the expansion mechanism.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: a ball valve comprises a valve body A, a driving mechanism, a valve rod 1 and a sealing piece 5.

The valve body A is provided with the tubular bracket B for the valve rod 1 to pass through, the L-shaped hole B1 is formed on the wall of the tubular bracket B, the structure is more beneficial to processing of the L-shaped hole B1, and the cross rod 1 is better matched with the L-shaped hole B1.

The sealing element 5 is a spheroid, the spheroid is provided with a channel 52 and a sealing surface which transversely penetrate, a deformation notch is formed in the spheroid, the valve rod 1 is connected with the deformation notch of the spheroid through the expansion mechanism 6, the valve body A is provided with a diversion opening A1 opposite to the sealing element 5, when the valve rod 1 moves downwards, the spheroid can be unfolded through the expansion mechanism 6 to seal the diversion opening A1, the sealing element is arranged at the lower end of the valve rod 1 and can be composed of an elastic component, the valve rod 1 drives the spheroid to rotate 90 degrees through the expansion mechanism 6, the sealing surface of the spheroid is opposite to the diversion opening A1 and is expanded by the force exerted by the expansion mechanism 6 to seal the diversion opening A1, when the sealing element 5 needs to be switched to be in an open state, the valve rod 1 and the expansion mechanism 6 drive the spheroid to move upwards, the spheroid rebounds, and then the valve rod 1 controls the spheroid to rotate 90 degrees, and the channel 52 is opposite to the diversion opening A1 to play a role of flow.

The driving mechanism can drive the valve rod 1 to lift and rotate so as to enable the sealing element 5 to switch between an open state and a sealing state, and comprises an external thread 11 formed on the valve rod 1, a nut 2 rotatably arranged on the valve body A, a driving component for driving the nut 2 to rotate, a limited slip piece 3 arranged on the valve rod 1 and a guiding structure for guiding the valve rod 1 to lift and rotate, wherein when the limited slip piece 3 is tightly propped against the nut 2, the valve rod 1 can be switched from lift to rotation, when the limited slip piece 3 is separated from the nut 2, the rotation of the nut 2 drives the valve rod 1 to lift and move under the guiding of the guiding structure, when the limited slip piece 3 is tightly propped against the nut 2, the nut 2 and the limited slip piece 3 can synchronously rotate, the valve rod 1 rotates along with the nut 2 and stops when the limited slip piece rotates by 90 degrees, a bearing 7 is further sleeved on the nut 2, and the bearing 7 can reduce friction generated when the nut 2 rotates.

The guide structure comprises an L-shaped hole arranged on the valve body A and a cross rod 4 arranged on the valve rod 1 and crossing the L-shaped hole B1, the L-shaped hole B1 comprises a vertical section B11 and a transverse section B12 transversely and horizontally extending from the upper end of the vertical section B11, when the cross rod 4 moves to the uppermost end of the vertical section B11, the anti-slip piece 3 is tightly propped against the nut 2, because the cross rod 4 is fixedly connected with the valve rod 1 and the cross rod 4 moves along with the valve rod 1, the cross rod 4 and the vertical section B11 can guide the valve rod 1 to only move up and down, the transverse section B12 is used for avoiding the cross rod 4 when the valve rod 1 rotates, when the ball valve is required to be opened, the anti-slip piece 3 is propped against the nut 2 to enable the valve rod 1 to synchronously rotate with the nut 2, the cross rod 4 is driven to rotate by taking the valve rod 1 as an axis and driving the ball body to rotate, when the cross rod 4 is propped against the right end face of the transverse section B12 of the L-shaped hole B1, conversely, when the ball valve is required to be closed, the nut 2 drives the cross rod 1 to reversely rotate, the cross rod 1 rotates along with the valve rod 1, the ball valve rod 4 rotates along with the rotation with the ball valve 1, the ball valve rod 1 stops rotating by 90, and the nut rotates along with the nut 1 when the ball valve rod 1 rotates, and the nut rotates along with the nut 1 when the ball valve rod is stopped, and the nut rotates along with the nut when the nut rotates along with the sealing rod 2 when the ball 4 and stops when the sealing end.

The expansion mechanism 6 comprises an expansion piece 61, two transmission pieces 63 and two through slots 64, the two through slots 64 are formed on the expansion piece 61 in bilateral symmetry, the through slots 64 are long holes which are obliquely arranged, the two transmission pieces 63 are respectively arranged at two ends of a deformation notch of a spheroid and are positioned in the long holes, a valve rod 1 is fixedly connected with the expansion piece 61 of the expansion mechanism 6 through a pin 62, the expansion piece 61 applies force to the two transmission pieces 63 to drive the spheroid to expand so as to seal a guide opening A1, the symmetrical design of the two transmission pieces 63 and the two through slots 64 is beneficial to the fact that the force applied to the sealing piece 5 is more uniform, when the valve rod 1 moves downwards, the expansion piece 61 applies force to the two transmission pieces 63 to drive the spheroid to expand so as to seal the guide opening A1, otherwise, the sealing pressure between the spheroid and the guide opening A1 is reduced, the spheroid rebounds, and the valve rod 1 rotates 90 degrees along with the valve rod 1, and the channel 52 is opposite to the guide opening A1, and the communication is restored.

The non-slip part 3 is sleeved on the annular body of the valve rod 1, the upper end face of the annular body can be tightly propped against the lower end face of the nut 2, the annular body can be fixed on the valve rod 1 in a sleeved mode, so that the non-slip part 3 is convenient to assemble and disassemble, the upper end face of the annular body is tightly propped against the lower end face of the nut 2, a sufficient contact area is formed between the annular body and the nut 2, friction force between the annular body and the nut 2 is increased, the annular body cannot slip relative to the nut 2, when the valve rod 1 is positioned at the topmost end, the non-slip part 3 is tightly attached to the nut 2, the driving mechanism drives the nut 2 to rotate, the non-slip part 3 and the nut 2 are simultaneously rotated to drive the cross rod 4 to rotate, and when the valve rod 1 moves downwards, the lower end face of the non-slip part 3 can prop against the upper end face of the bottom of the cylindrical support B to play a limiting role, and the valve rod 1 is prevented from moving downwards too much to deform or damage the sealing part 5.

The cross rod 4 transversely passes through the non-slip piece 3 and the valve rod 1, so that the cross rod 4 can be fixed, the non-slip piece 3 can be fixed, the whole structure is simpler, and the assembly is more convenient.

The cross rod 4 comprises a fixed section 41 and an extending section 42, a protruding limiting part 43 is formed between the fixed section 41 and the extending section 42, the fixed section 41 is locked and fixed through a first nut 44 after traversing the sliding-preventing piece 3 and the valve rod 1, one end of the fixed section 41, which is far away from the limiting part 43, is provided with a first external thread matched with the first nut 44, the extending section 42 traverses the L-shaped hole B1, the transverse position of the cross rod 4 can be fixed after the first nut 44 is locked, the cross rod 4 is prevented from sliding transversely, and the structure can be convenient for assembling products.

The driving assembly comprises a motor C and a transmission mechanism D connected between the motor C and the nut 2, so that the motor C can drive the nut 2 to rotate through the transmission mechanism D, electric driving of the ball valve is realized, manual operation is not needed, the transmission mechanism D can be a turbine or a gear device, mechanical energy generated by the motor C drives the turbine or the gear device to rotate, and the turbine or the gear device is connected with the top end of the nut 2 to drive the nut 2 to rotate.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, i.e., the utility model is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the utility model.

Claims

1. The utility model provides a ball valve, includes valve body (A), actuating mechanism, valve rod (1) and sealing member (5), sealing member (5) set up the lower extreme at valve rod (1), and actuating mechanism can drive valve rod (1) lift and rotate so that sealing member (5) switch between open state and sealing state, its characterized in that: the driving mechanism comprises an external thread (11) formed on the valve rod, a nut (2) which is rotatably arranged on the valve body (A) and matched with the external thread (11), a driving assembly for driving the nut (2) to rotate, a slip stop (3) arranged on the valve rod (1) and a guiding structure for guiding the valve rod (1) to lift and rotate, and the driving mechanism is arranged in such a way that when the slip stop (3) is tightly propped against the nut (2), the valve rod (1) can be switched from lift to rotation.

2. A ball valve according to claim 1, wherein: the guide structure comprises an L-shaped hole (B1) arranged on the valve body (A) and a cross rod (4) arranged on the valve rod (1) and crossing the L-shaped hole (B1), the L-shaped hole (B1) comprises a vertical section (B11) and a transverse section (B12) horizontally extending from the upper end of the vertical section (B11), and when the cross rod (4) moves to the uppermost end of the vertical section (B11), the anti-slip piece (3) is tightly propped against the nut (2).

3. A ball valve according to claim 2, wherein: the valve body (A) comprises a cylindrical support (B) for the valve rod (1) to pass through, and the L-shaped hole (B1) is formed on the cylinder wall of the cylindrical support (B).

4. A ball valve according to claim 2, wherein: the anti-slip part (3) is an annular body sleeved on the valve rod (1), and the upper end face of the annular body can be tightly propped against the lower end face of the nut (2).

5. A ball valve according to claim 4, wherein: the cross bar (4) crosses the anti-slip element (3) and the valve rod (1).

6. A ball valve according to claim 5, wherein: the cross rod (4) comprises a fixed section (41) and an extending section (42), a protruding limiting part (43) is formed between the fixed section (41) and the extending section (42), the fixed section (41) transversely penetrates through the anti-slip piece (3) and is locked and fixed through a first nut (44) after passing through the valve rod (1), one end, away from the limiting part (43), of the fixed section (41) is provided with a first external thread matched with the first nut (44), and the extending section (42) transversely penetrates through the L-shaped hole (B1).

7. A ball valve according to any one of claims 2 to 6, wherein: the driving assembly comprises a motor (C) and a transmission mechanism (D) connected between the motor (C) and the nut (2).

8. A ball valve according to any one of claims 2 to 6, wherein: the sealing element (5) is a spheroid, the spheroid is provided with a channel (52) and a sealing surface which transversely penetrate, a deformation notch is formed in the spheroid, the valve rod (1) is connected with the deformation notch of the spheroid through the expansion mechanism (6), the valve body (A) is provided with a diversion opening (A1) opposite to the sealing element (5), and when the valve rod (1) moves downwards, the spheroid can be unfolded through the expansion mechanism (6) to seal the diversion opening (A1).

9. A ball valve according to claim 8, wherein: the expansion mechanism (6) comprises an expansion piece (61), two transmission pieces (63) and two penetrating slotted holes (64), wherein the two penetrating slotted holes (64) are formed on the expansion piece (61) in bilateral symmetry, the penetrating slotted holes (64) are long holes which are obliquely arranged, and the two transmission pieces (63) are respectively arranged at two ends of a deformation notch of the spheroid and are positioned in the long holes.

10. A ball valve according to claim 8, wherein: when horizontal pole (4) are in when the one end of vertical section (B11) is kept away from to horizontal section (B12), passageway (52) and water conservancy diversion mouth (A1) of spheroid are relative, and sealing member (5) are in the open state this moment, when needing to close the ball valve, valve rod (1) rotation drive horizontal pole (4) remove to vertical section (B11) upper end makes the spheroid rotation 90 degrees, makes the sealed face of spheroid and water conservancy diversion mouth (A1) relative, valve rod (1) downwardly moving makes the spheroid struts with sealed water conservancy diversion mouth (A1) through expansion mechanism (6).