Valve

Abstract

The utility model discloses a valve, which relates to the technical field of valves and comprises a valve body, a valve body joint, a ball core, a valve rod and a wrench. A through hole is formed in the top of the valve body, and an auxiliary block is arranged in the through hole; an auxiliary assembly is integrated in the auxiliary block and comprises a pressing rod, a sliding block and a pressing spring, the pressing cover can be rotated to be in linkage with the pressing rod to be separated from or lock the limiting groove, the auxiliary block is prevented from accidentally rotating along with the valve rod while quick disassembly and assembly of the valve rod and the ball core are achieved, and operation safety is guaranteed. The wrench is clamped with the valve rod through the elastic clamping piece and can be disassembled without a tool. A conical groove of the sealing ring is attached to the ball core to form double sealing, and an elastic protrusion at the bottom of the valve rod is matched with a ball core caulking groove to enhance connection stability. According to the valve, the maintenance process is simplified through modular design, the disassembly and assembly safety and efficiency are guaranteed through mechanical linkage of the gland and the auxiliary assembly, the maintenance time is shortened, and part losses are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a valve. BACKGROUND

[0002] Valve is the control component in fluid transportation system, has the functions such as guiding, intercepting, adjusting, throttling, preventing backflow, shunting or overflow pressure relief.

[0003] The utility model discloses a marking machine, including the casing, the protective cover, the wrench and the valve rod, the casing upper and lower both ends are equipped with the protective cover, and the protective cover is detachable structure, and the valve rod is located in the casing, and the wrench is detachably connected with the valve rod;

[0004] The above-mentioned device can disassemble the wrench, but the whole valve is difficult to disassemble, and impurities are easy to accumulate or wear in the valve during use, so the valve needs to be cleaned or replaced frequently. However, the existing structure is difficult to disassemble, which forces maintenance personnel to spend a lot of time to disassemble the components, and even the key components may be damaged due to improper operation. Therefore, we propose a valve. UTILITY MODEL CONTENTS

[0005] The utility model discloses a valve in view of the deficiency in the prior art.

[0006] In order to solve the above technical problems, the utility model discloses the following technical scheme to solve the problem of valve disassembly in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A valve, comprising: a valve body, an outer side connected with a valve body joint by a bolt; a ball core, provided in the valve body, an outer side provided with symmetrically distributed sealing rings; a valve rod, penetrating the valve body and rotatably connected with the valve body, the bottom of the valve rod connected with the insertion slot provided at the top of the ball core; a wrench, provided at the top of the valve rod, for driving the valve rod and the ball core to rotate; an auxiliary block, provided in the through hole at the top of the valve body, the auxiliary block fixed in the through hole by a gland; the gland is fixed with the valve body by a bolt, the center of the gland is provided with a pressing shaft, the pressing shaft is embedded in the through hole to limit the auxiliary block; an auxiliary assembly, provided in the auxiliary block, for preventing the auxiliary block from rotating with the valve rod.

[0009] Preferably, a limiting ring is fixed in the auxiliary block, a stepped block is fixed on the outer side of the bottom of the valve rod, a sealing pad is arranged between the bottom of the limiting ring and the stepped block, and the top of the valve rod slides through the limiting ring.

[0010] Preferably, the auxiliary assembly comprises a sliding block and a pressing rod fixed coaxially, the auxiliary block is internally provided with annularly distributed mounting holes, the sliding block and the pressing rod are arranged in the mounting holes, one end of the pressing rod is matched with the limiting groove in the through hole, the other end is matched with the auxiliary hole on the fixed cylinder fixedly arranged at the bottom of the pressing shaft, and the sliding block is reset through the compression spring to realize locking or releasing of the pressing rod.

[0011] Preferably, the part where the end of the pressing rod contacts the auxiliary hole is an arc surface, so as to adapt to the sliding-out action of the pressing rod from the auxiliary hole.

[0012] Preferably, the wrench is in sliding cooperation with the top end of the valve rod, and is clamped in the clamping groove outside the valve body through the elastic clamping pieces on the upper and lower sides, so as to realize quick disassembly of the wrench.

[0013] Preferably, the cross section of the elastic clamping piece is U-shaped, the open end of the elastic clamping piece is in contact with the valve rod, and the closed end is embedded in the clamping groove.

[0014] Preferably, the end face of the sealing ring in contact with the ball core is provided with a conical groove, and the conical groove is tightly matched with the outer surface of the ball core to enhance the sealing performance.

[0015] Preferably, the bottom of the valve rod is fixedly provided with an elastic protrusion, and the insertion slot at the top of the ball core is provided with an embedded groove matched with the elastic protrusion, so as to realize stable connection of the valve rod and the ball core.

[0016] Preferably, the inner wall of the valve body joint is provided with an annular flange, and the sealing ring is tightly pressed with the valve body through the annular flange.

[0017] Preferably, the contact surface of the pressing shaft and the through hole is coated with a wear-resistant coating.

[0018] Compared with the prior art, the utility model has the advantages of the following:

[0019] The utility model discloses a valve rod and valve body quick separation and locking are realized through the cooperation of auxiliary block, gland and auxiliary assembly.

[0020] The conical groove design of the contact surface of the sealing ring and the ball core forms radial and axial double sealing, adapts to the curvature of the outer surface of the ball core, effectively prevents medium leakage, the cooperation of the elastic protrusion at the bottom of the valve rod and the embedded groove of the ball core further ensures the stable connection of the valve rod and the ball core, reduces the sealing failure caused by vibration or pressure fluctuation, and prolongs the service life of the valve under high pressure and high frequency working conditions.

[0021] The locking mechanism of the pressing rod and the limiting groove in the auxiliary assembly, combined with the compression spring reset function, prevents the auxiliary block from accidentally rotating with the valve rod, and reduces the operation risk. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0023] Figure 1 It is a whole structure schematic view of the present application;

[0024] Figure 2 It is a whole structure explosion schematic view of the present application;

[0025] Figure 3 It is another perspective view of the whole structure explosion schematic view of the present application;

[0026] Figure 4 It is a whole structure cross-sectional view of the present application;

[0027] Figure 5 It is another perspective view of the whole structure cross-sectional view of the present application;

[0028] Figure 6 It is a valve rod part structure schematic view of the present application;

[0029] Figure 7 It is a partial cross-sectional view of the auxiliary block part of the present application.

[0030] Figure number explanation: 1, valve body; 2, valve body joint; 3, ball core; 4, sealing ring; 5, valve rod; 6, insertion slot; 7, wrench; 8, auxiliary block; 9, through hole; 10, gland; 11, pressure shaft; 12, auxiliary assembly; 13, limiting ring; 14, stepped block; 15, sealing gasket; 16, sliding block; 17, pressure rod; 18, mounting hole; 19, limiting groove; 20, fixed cylinder; 21, auxiliary hole; 22, elastic card; 23, conical groove; 24, elastic protrusion; 25, annular flange; 26, compression spring. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the drawings. EMBODIMENT

[0032] Please refer to Figures 1-7The utility model provides a valve, including: valve body 1, outside through bolt connection has valve body joint 2, the quick separation of facilitating is provided with the convenience for the overhaul of internal components, ball core 3 is located in the inside of valve body 1, and outside is equipped with the sealing ring 4 of symmetrical distribution, valve stem 5, and it is connected with valve body 1 to be rotated with the penetration valve body 1, and the insertion slot 6 of valve stem 5 bottom and ball core 3 top setting is connected, wrench 7, is located in valve stem 5 top, and the rotation drive ball core 3 rotates through the rotation of wrench 7, realizes the conduction or cut-off of fluid, auxiliary block 8, is located in the through hole 9 of valve body 1 top, and auxiliary block 8 is fixed in through hole 9 through gland 10, and gland 10 is fixed with valve body 1 through bolt, and the centre of gland 10 is equipped with pressure axle 11, and pressure axle 11 is embedded in through hole 9 to limit auxiliary block 8, auxiliary assembly 12, is located in auxiliary block 8, prevents auxiliary block 8 with valve stem 5 rotation through mechanical linkage mechanism, ensures the stability of operation. The overall structure guarantees the sealing performance, realizes the quick separation and reorganization of each main component, and the maintenance difficulty is greatly reduced.

[0033] Some embodiments of the application will be described in detail below with reference to the accompanying drawings:

[0034] Please refer to Figures 1-6 The utility model discloses through the cooperation of auxiliary block 8, gland 10 and auxiliary assembly 12, realizes the quick separation and locking of valve stem 5 and valve body 1. The linkage design of pressure axle 11 of gland 10 and limiting groove 19 of auxiliary block 8 cooperates with the arc-shaped end face of pressure rod 17, so that auxiliary block 8 can be released by only rotating gland 10 when disassembling, without disassembling the overall structure, greatly shortening the maintenance time, reducing the operation complexity, and avoiding the risk of component damage caused by the complex structure of traditional valves.

[0035] Among them, the limiting ring 13 is fixedly arranged in the auxiliary block 8, the stepped block 14 is fixedly arranged outside the bottom of the valve stem 5, and the sealing gasket 15 is arranged between the bottom of the limiting ring 13 and the stepped block 14. The sealing gasket 15 provides dynamic sealing when the valve stem 5 rotates, preventing leakage of the medium along the gap between the valve stem 5 and the auxiliary block 8. The valve stem 5 is slidably penetrated through the limiting ring 13. This design allows the valve stem 5 to have a small displacement in the vertical direction to adapt to the rotation of the ball core 3, and limits the axial movement of the valve stem 5 through the cooperation of the stepped block 14 and the limiting ring 13, ensuring the stability during operation. While achieving sealing, it provides physical support for the quick disassembly of the valve stem 5, avoiding the disassembly difficulty caused by the complex connection of traditional valves. At the same time, the contact surface between the pressure axle 11 and the through hole 9 is coated with a wear-resistant coating, which reduces the friction coefficient between the pressure axle 11 and the inner wall of the through hole 9, reduces the wear caused by frequent disassembly, and prolongs the service life of the pressure axle 11 and the valve body 1;

[0036] Further, the auxiliary assembly 12 comprises a sliding block 16 and a pressing rod 17 fixed coaxially, and the auxiliary block 8 is provided with annularly distributed mounting holes 18, the sliding block 16 and the pressing rod 17 are arranged in the mounting holes 18, one end of the pressing rod 17 is matched with a limiting groove 19 in the through hole 9, the other end is matched with an auxiliary hole 21 on a fixed cylinder 20 fixedly arranged at the bottom of the pressing shaft 11, the sliding block 16 is reset by a compression spring 26 to realize locking or releasing of the pressing rod 17, in the initial state, the compression spring 26 pushes the pressing rod 17 into the auxiliary hole 21 to form a locking state; when the valve needs to be assembled, the rotary gland 10 drives the fixed cylinder 20 to rotate, the arc-shaped end surface of the pressing rod 17 slides out of the auxiliary hole 21, and the other end is embedded in the limiting groove 19 to fix the auxiliary block 8 in the through groove. Through the dual action of spring reset and mechanical linkage, the design not only prevents the auxiliary block 8 from rotating accidentally, but also simplifies the disassembly and assembly steps, ensuring the safety and efficiency of the maintenance process.

[0037] Meanwhile, the part where the end of the pressing rod 17 contacts the auxiliary hole 21 is an arc surface to adapt to the sliding action of the pressing rod 17 out of the auxiliary hole 21, optimizing the motion trajectory of the auxiliary assembly 12. When the arc surface contacts the inner wall of the auxiliary hole 21, it can reduce sliding friction, making the pressing rod 17 more smoothly separate from the auxiliary hole 21 when the rotary gland 10 rotates. This design not only reduces the external force required for operation, but also avoids component wear caused by friction, prolonging the service life of the auxiliary assembly 12. Further, the geometry of the arc surface can be perfectly adapted to the edge of the auxiliary hole 21 (not shown in the figure), ensuring precise and reliable switching of the pressing rod 17 between the locked and released states, further improving the maintainability of the valve;

[0038] Further, the wrench 7 is in sliding cooperation with the top end of the valve rod 5 and is clamped in the clamping groove on the outer side of the valve body 1 through the elastic clamping pieces 22 on the upper and lower sides, the cross section of the elastic clamping piece 22 is U-shaped, the open end contacts the valve rod 5, and the closed end is embedded in the clamping groove; the wrench 7 is clamped in the clamping groove on the outer side of the valve body 1 through the elastic clamping pieces 22 on the upper and lower sides, the U-shaped cross section of the elastic clamping piece 22 allows it to deform under pressure, easily embedding or separating from the clamping groove. When disassembling, the wrench 7 can be released by pulling the elastic clamping piece 22 without the need for tool assistance, greatly simplifying the operation process. This design is particularly suitable for scenarios where the wrench 7 needs to be frequently replaced or cleaned, such as corrosive medium environments, protecting the functional integrity of the wrench 7 and avoiding thread wear caused by bolt connection.

[0039] In the technical solution, the end surface of the sealing ring 4 in contact with the ball core 3 is provided with a tapered groove 23, the tapered groove 23 is tightly combined with the outer surface of the ball core 3 to enhance the sealing performance, the tapered groove 23 is combined with the curvature of the outer surface of the ball core 3 to form a radial and axial double sealing interface. When the medium pressure rises, the inclined surface of the tapered groove 23 converts the pressure into extrusion force on the ball core 3, further enhancing the contact tightness of the sealing ring 4 and the ball core 3. The structure is especially suitable for high-pressure or high-viscosity medium scenes, which can effectively prevent leakage caused by the gap between the sealing surfaces, reduce the wear of the sealing ring 4, and prolong the replacement cycle.

[0040] In the technical solution, the bottom of the valve rod 5 is fixedly provided with an elastic protrusion 24, and the top of the ball core 3 is provided with an embedding groove matched with the elastic protrusion 24, so as to realize the stable connection of the valve rod 5 and the ball core 3. The elastic protrusion 24 is made of high-elasticity material and is automatically clamped in the embedding groove when the valve rod 5 is inserted into the ball core 3, forming a mechanical interlocking. This connection method not only allows the valve rod 5 to rotate freely within a certain range, but also can resist loosening caused by vibration or impact. In addition, the buffering effect of the elastic protrusion 24 reduces the wear of the contact surface between the ball core 3 and the valve rod 5, ensuring the transmission accuracy and reliability in long-term use.

[0041] It is worth noting that the inner wall of the valve body joint 2 is provided with an annular flange 25, the sealing ring 4 is tightly compressed with the valve body 1 through the annular flange 25, the annular flange 25 is located on the inner wall of the valve body joint 2, and the end surface thereof is tightly compressed with the outer edge of the sealing ring 4 to form a rigid support. When the bolt fastens the valve body joint 2, the sealing ring 4 is uniformly compressed, avoiding local deformation or leakage caused by uneven force. The geometric accuracy of the annular flange 25 ensures the coaxiality of the sealing ring 4 after installation, further improving the sealing effect, especially suitable for long-term stable operation under high-temperature or high-pressure difference working conditions.

[0042] The use principle of the device is described as follows:

[0043] Valve opening: the maintenance personnel hold the wrench 7 and rotate the wrench 7 clockwise, the rotation force of the wrench 7 is transmitted to the valve rod 5, the elastic protrusion 24 at the bottom of the valve rod 5 is tightly matched with the embedding groove at the top of the ball core 3, driving the ball core 3 to rotate 90° in the valve body 1, aligning the through hole of the ball core 3 with the flow channel of the valve body 1, realizing fluid conduction. In this process, the pressure rod 17 in the auxiliary block 8 is always embedded in the limiting groove 19 under the extrusion of the fixed cylinder 20, preventing the auxiliary block 8 from rotating with the valve rod 5, and ensuring the operation stability.

[0044] Valve closing: anticlockwise rotate the wrench 7, the valve rod 5 drives the ball core 3 to rotate reversely 90°, the through hole of the ball core 3 is perpendicular to the flow channel of the valve body 1, completely blocks the fluid, when the ball core 3 rotates to the position, the tapered groove 23 of the sealing ring 4 is closely combined with the outer surface of the ball core 3, the medium pressure drives the inclined surface of the tapered groove 23 to further compress the ball core 3, forms the double seal of radial and axial, prevents the leakage, the stepped block 14 at the bottom of the valve rod 5 contacts with the limiting ring 13 in the auxiliary block 8, limits the axial excursion of the valve rod 5, avoids the displacement of the ball core 3 due to the fluid impact;

[0045] When the valve needs to be disassembled and maintained, the fixing bolt of the gland 10 and the valve body joint 2 is loosened by using the tool, the gland 10 is rotated anticlockwise. The compression shaft 11 in the center of the gland 10 rotates, drives the fixed cylinder 20 to rotate, the arc-shaped end surface of the compression rod 17 gradually slides into the auxiliary hole 21 under the action of the compression spring 26, and is separated from the limiting groove 19, releases the auxiliary block 8, the valve rod 5, the auxiliary block 8, the gland 10 and the wrench 7 are taken off from the valve body 1 as a whole, then the ball core 3 is taken off from the valve body 1, then the wrench 7 is taken off from the valve rod 5 by taking off the elastic card 22, the valve rod 5 is pressed downward, so that the valve rod 5 is taken off from the auxiliary block 8, the disassembly of the valve as a whole is completed, and the subsequent cleaning and replacement of the parts are facilitated;

[0046] When reassembling, the ball core 3 is placed into the valve body 1, the valve rod 5 is inserted into the auxiliary block 8 from below the auxiliary block 8, then the gland 10 is installed on the valve rod 5, at this time, the fixed cylinder 20 at the bottom of the gland 10 is embedded in the auxiliary block 8, the end head of the compression rod 17 is embedded in the auxiliary hole 21, then the wrench 7 is re-fixed on the valve rod 5 through the elastic card 22, after that, the compression shaft 11 of the valve rod 5, the auxiliary block 8 and the gland 10 are embedded in the through hole 9 together, the elastic protrusion 24 at the bottom of the valve rod 5 is aligned with the embedding groove of the ball core 3, the valve rod 5 is lightly pressed until the elastic protrusion 24 is clamped into the embedding groove, a stable connection is formed, finally, the gland 10 is rotated clockwise, drives the fixed cylinder 20 to rotate, so that the arc-shaped end surface of the compression rod 17 is separated from the auxiliary hole 21, the other end of the compression rod 17 is embedded in the limiting groove 19 of the through hole 9, further fixes the auxiliary block 8 in the through hole 9, then the gland 10 and the valve body joint 2 are fixed with the valve body 1 through the bolt, the assembly of the valve is completed.

[0047] Those skilled in the art should understand that the embodiments of the utility model shown in the above description and the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the implementation of the utility model can have any deformation or modification without departing from the principle.

Claims

1. A valve, characterized in that The utility model provides a valve body (1) is connected with valve body joint (2) through bolt outside, ball core (3) is equipped with the symmetrical distribution sealing ring (4) outside in the valve body (1) inside, valve stem (5) passes through the valve body (1) with the valve body (1) rotation connection, the bottom of valve stem (5) is connected with the insertion slot (6) of ball core (3) top setting, spanner (7) is equipped with the valve stem (5) top, is used for driving valve stem (5) and ball core (3) rotation, auxiliary block (8) is equipped with the through hole (9) in the valve body (1) top, auxiliary block (8) is fixed in through hole (9) through gland (10), the gland (10) is fixed with valve body (1) through bolt, the center of gland (10) is equipped with pressure axle (11), and pressure axle (11) is embedded in through hole (9) to limit auxiliary block (8), auxiliary assembly (12) is equipped with auxiliary block (8) in, is used for preventing auxiliary block (8) with valve stem (5) rotation. The bottom of auxiliary block (8) is fixedly provided with a limiting ring (13), the bottom outside of valve stem (5) is fixedly provided with a stepped block (14), a sealing gasket (15) is arranged between the bottom of limiting ring (13) and the stepped block (14), and the top of valve stem (5) is slidably penetrated through the limiting ring (13). The auxiliary assembly (12) comprises a sliding block (16) and a pressing rod (17) fixed coaxially, the auxiliary block (8) is provided with annularly distributed mounting holes (18) therein, the sliding block (16) and the pressing rod (17) are arranged in the mounting holes (18), one end of the pressing rod (17) is matched with a limiting groove (19) in the through hole (9), the other end is matched with an auxiliary hole (21) on a fixing cylinder (20) fixedly arranged at the bottom of the pressure shaft (11), and the sliding block (16) is reset by a compression spring (26) to realize locking or releasing of the pressing rod (17). The end of the pressing rod (17) is in contact with the auxiliary hole (21) is an arc surface to adapt the sliding action of the pressing rod (17) from the auxiliary hole (21). The spanner (7) is slidably matched with the top end of the valve stem (5) and is clamped in a clamping groove on the outside of the valve body (1) through elastic clamping pieces (22) on the upper and lower sides to realize quick disassembly of the spanner (7). The cross section of the elastic clamping piece (22) is U-shaped, the open end is in contact with the valve stem (5), and the closed end is embedded in the clamping groove. The end surface of the sealing ring (4) in contact with the ball core (3) is provided with a tapered groove (23), the tapered groove (23) is tightly combined with the outer surface of the ball core (3) to enhance the sealing performance.

2. A valve according to claim 1, characterised in that: The bottom of the valve stem (5) is fixedly provided with an elastic protrusion (24), and the insertion slot (6) at the top of the ball core (3) is provided with an embedding groove matched with the elastic protrusion (24) to realize stable connection of the valve stem (5) and the ball core (3).

3. The valve of claim 1, wherein: The inner wall of the valve body joint (2) is provided with an annular flange (25), and the sealing ring (4) is tightly pressed with the valve body (1) through the annular flange (25).

4. A valve according to claim 3, wherein: ​ 5. The valve of claim 1, wherein: ​ 6. A valve according to claim 5, wherein: ​ 7. The valve of claim 1, wherein: ​ 8. The valve of claim 1, wherein: ​ 9. The valve of claim 1, wherein: ​ 10. The valve of claim 1, wherein: The contact surface of the press shaft (11) with the through hole (9) is coated with a wear-resistant coating.

Images