Hydraulic double-seal gapless valve

Abstract

The utility model relates to the technical field of pipeline valves, in particular to a hydraulic double-seal gapless valve, which comprises a valve body, a two-way valve seat, a flashboard and a hydraulic device, a gate hole with a through upper part is arranged in the vertical center of the valve body, the flashboard capable of vertically lifting through the hydraulic device is arranged in the gate hole, and an upper sealing component is arranged at the upper end of the gate hole; a channel I is formed in the transverse center of the valve body, two-way valve seats are inserted into the left end and the right end of the valve body respectively, the two-way valve seats are inserted into the channel I in a sealed mode, a channel II is formed in the transverse center of each two-way valve seat, and inner sealing faces are arranged on the inner surfaces of the two-way valve seats. And a gap formed between the inner sealing surfaces on the inner sides of the two bidirectional valve seats is in interference fit with the flashboard. In the opening and closing process of the hydraulic double-seal gapless valve, the flashboard is tightly attached to the inner sealing face of the two-way valve seat, the hydraulic double-seal gapless valve is resistant to abrasion, resistant to scouring and leakage and durable and good in product sealing performance, the two-way valve seat can be replaced, maintenance is convenient, and the service life of the valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline valve technical field, concretely relates to a liquid driven double-seal gapless valve. BACKGROUND

[0002] In the industrial production process, pipeline valve as the key equipment of fluid control, its stability and reliability are very important. Especially in the mining, metallurgy, power plant, coal, chemical industry and other industries, because the medium is mostly ore pulp, sewage and other fluid containing a large number of fine particles, the sealing performance, wear resistance and slag discharge capacity of the valve are put forward very high requirements. Traditional valves, such as gate valve, stop valve and the like, when facing these harsh working conditions, often have problems such as sealing performance decline, easy to wear, serious slag accumulation, which seriously affect the production efficiency and equipment life.

[0003] The liquid driven valve is gradually widely used in industrial production with the advantages of simple operation, large output torque and stable operation. However, the sealing surface and valve seat of the traditional liquid driven valve are easily eroded and worn when dealing with the fluid containing fine particles, which leads to the decline of sealing performance and frequent leakage of medium. In addition, the slag discharge capacity of the traditional liquid driven valve is limited, and the particles in the medium are easy to accumulate in the valve, forming slag, which affects the normal opening and closing of the valve, and even causes valve jamming, leakage and other failures, which brings great safety hazards to production.

[0004] In order to solve these problems, a liquid driven double-seal gapless valve is proposed. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the utility model provides a liquid driven double-seal gapless valve, which is tightly fitted with the internal sealing surface formed by the gate plate and the bidirectional valve seat installed in the valve body during opening and closing, which is wear-resistant, anti-erosion and anti-leakage, the sealing performance of the product is durable and good, and the bidirectional valve seat can be replaced, which is convenient for equipment maintenance and improves the service life of the valve.

[0006] The technical scheme of the utility model is as follows:

[0007] A liquid driven double-seal gapless valve, comprising a valve body, a bidirectional valve seat, a gate plate and a liquid driven device, a gate hole is provided in the vertical center of the valve body, a gate plate capable of being vertically lifted by the liquid driven device is installed in the gate hole, and an upper sealing assembly is provided at the upper end of the gate hole; a channel I is provided in the horizontal center of the valve body, bidirectional valve seats are respectively inserted at the left and right ends of the valve body, the bidirectional valve seats are sealingly inserted in the channel I, a channel II is provided in the horizontal center of the bidirectional valve seat, an internal sealing surface is provided on the inner surface of the bidirectional valve seat, and the gap between the internal sealing surfaces on the inner sides of the two bidirectional valve seats is in interference fit with the gate plate.

[0008] The hydraulic device comprises a support, a connecting rod and a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixed on the top of the valve body through the support, the top of the gate plate is fixedly connected with one end of the connecting rod, and the other end of the connecting rod is fixedly connected with the piston of the hydraulic cylinder in a sealing mode after penetrating through the cylinder body of the hydraulic cylinder.

[0009] A slag guide groove is arranged at the lower end of the gate hole, a slag discharging device is fixedly connected with the outlet of the slag guide groove in a sealing mode, and a detachable cap is arranged at the slag discharging port of the slag discharging device.

[0010] The slag discharging device comprises a tubular slag discharging pipe, and sealing pipe threads matched with the cap are arranged at both ends of the slag discharging pipe.

[0011] The upper sealing assembly comprises a rectangular sealing ring, sealing filler and a gland, a rectangular groove matched with the rectangular sealing ring is arranged at the top of the gate hole, the sealing filler is filled on the rectangular sealing ring, and the gland is fixedly connected with the valve body to compact the sealing filler.

[0012] Specifically, the sealing filler is graphite.

[0013] A groove is arranged in the skeleton of the outer circular shaft of the bidirectional valve seat, and an outer lining rubber is arranged in the skeleton.

[0014] The lower part of the gate plate is arranged in a wedge shape.

[0015] Threaded holes for fixedly connecting with pipelines are arranged at the left and right sides of the valve body and are arranged in a uniform distribution along the circumference with the channel I as the center.

[0016] A recessed stopper and a convex stopper matched with each other are arranged at both ends of the channel I and the outer side of the bidirectional valve seat, and the pipeline is fixedly connected with the valve body, so that the pipeline tightly fixes the bidirectional valve seat on the valve body.

[0017] The liquid-operated double-sealing gapless valve has the advantages that:

[0018] 1. The liquid-operated double-sealing gapless valve has excellent sealing performance: the valve adopts the cooperation of the bidirectional valve seat and the wedge-shaped structure gate plate, forms a tight sliding seal, and greatly enhances the sealing performance of the valve; in the opening and closing process, the inner sealing surface of the gate plate and the bidirectional valve seat are tightly combined, effectively preventing the leakage of the medium; the valve is internally provided with a rectangular sealing ring and a filler compaction structure, further enhancing the upper sealing performance of the valve, and ensuring that the medium will not leak upward.

[0019] 2. The liquid-operated double-sealing gapless valve has high slag discharging capacity: the special slag discharging device design enables the valve to cut the impurities in the medium during the opening and closing process, and discharges the slag liquid through the slag discharging device, effectively avoiding the problem of slag accumulation in the valve body; the two ends of the slag discharging device are screwed by the cap, which is convenient for removing the slag liquid when needed, and the maintenance is simple.

[0020] 3、The utility model discloses a kind of liquid-driven double-seal gapless valves, the skeleton of the liquid-driven double-seal gapless valves bidirectional valve seat is built-in and is lined with natural rubber outside, not only enhance the rigidity of valve seat, also guarantee the tightness of rubber layer, improve the wear resistance and erosion resistance of valve;Wedge structure gate can cut impurities in switching process, reduce the erosion of medium to valve seat, prolong the service life of valve.

[0021] 4、The utility model discloses a kind of liquid-driven double-seal gapless valves, the bidirectional valve seat of the liquid-driven double-seal gapless valves can be replaced individually, without replacing entire valve, reduce the maintenance cost of user, improve the usability of valve;The connection between the components of valve is reasonably designed, convenient to disassemble and assemble, further simplify maintenance work.

[0022] 5、The utility model discloses a kind of liquid-driven double-seal gapless valves, the liquid-driven double-seal gapless valves can be realized remote operation and control by cooperation hydraulic station, improve the degree of automation of valve;Cylinder body has the characteristics of large output torque, so that valve overall operation is stable and reliable, suitable for long-term stable operation under harsh working conditions.

[0023] 6、The utility model discloses a kind of liquid-driven double-seal gapless valves, the liquid-driven double-seal gapless valves are applicable to pipeline system with nominal diameter being 1200mm below, especially applicable to the control of medium such as ore pulp, sewage in fine particle material conveying pipeline in mining, metallurgy, power plant, coal, chemical industry and other industries. BRIEF DESCRIPTION OF DRAWINGS

[0024] The scheme and advantages of the present application will become clear to those skilled in the art from the following detailed description of the preferred embodiments. The drawings are merely for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present utility model.

[0025] In the drawings:

[0026] Figure 1 It is a front view of a kind of liquid-driven double-seal gapless valves of the utility model embodiment;

[0027] Figure 2 It is a cross-sectional schematic view of a kind of liquid-driven double-seal gapless valves of the utility model embodiment;

[0028] Figure 3 It is a local schematic view of the gate lower part of a kind of liquid-driven double-seal gapless valves of the utility model embodiment;

[0029] Figure 4 It is a cross-sectional schematic view of the bidirectional valve seat of a kind of liquid-driven double-seal gapless valves of the utility model embodiment;

[0030] The components represented by the various reference numerals in the diagram are:

[0031] This utility model comprises: 1. Slag discharge device; 2. Valve body; 2a. Channel I; 2b. Gate hole; 3. Bidirectional valve seat; 3a. Channel II; 3b. Frame; 3c. Groove; 3d. Rubber lining; 4. Gate plate; 5. Rectangular sealing ring; 6. Sealing packing; 7. Gland; 8. Bracket; 9. Connecting rod; 10. Piston; 11. Cylinder body; 12. Inner sealing surface; 13. Cap. Detailed Implementation

[0032] like Figure 1 and Figure 2 As shown, the hydraulic double-seal gapless valve mainly includes a valve body 2, a two-way valve seat 3, a gate 4, a hydraulic device, and other auxiliary components.

[0033] The valve body 2 is the main structure of the entire valve. A gate hole 2b is provided at the vertical center of the valve body 2, which is used to install the gate 4 and control the flow of the medium by raising and lowering the gate 4. An upper sealing component is provided at the upper end of the gate hole 2b to ensure that the medium inside the valve will not leak from the top. In addition, a channel I 2a is provided at the horizontal center of the valve body 2, which is the main flow channel of the medium. Bidirectional valve seats 3 are inserted at the left and right ends of the valve body 2, respectively. The bidirectional valve seats 3 are sealed in the channel I 2a to form a bidirectional sealing structure of the valve.

[0034] The valve body 2 is also provided with threaded holes on the left and right sides for fixed connection with pipelines. These threaded holes are evenly distributed along the circumference centered on channel I2a to ensure a stable connection between the valve and the pipeline. At the same time, mutually cooperating concave and convex stop mouths are provided at both ends of channel I2a and on the outside of the bidirectional valve seat 3. When the pipeline is fixedly connected to the valve body 2, the pipeline presses the bidirectional valve seat 3 tightly onto the valve body 2.

[0035] The bidirectional valve seat 3 has an internal channel II 3a, allowing the medium to pass through when the valve is open. The inner surface of the bidirectional valve seat 3 has an inner sealing surface 12, and the gap formed between the inner sealing surfaces 12 on the inner sides of the two bidirectional valve seats 3 is interference-fitted with the gate 4 to ensure the valve's sealing performance when closed. Furthermore, a skeleton 3b is provided inside the outer cylindrical shaft of the bidirectional valve seat 3, and grooves 3c are provided within the skeleton 3b to increase the adhesion of the outer rubber lining 3d. Figure 4 As shown; the outer rubber lining 3d is made of natural rubber, which has good elasticity and wear resistance, further improving the valve's sealing performance and service life.

[0036] The design of the two-way valve seat 3 allows it to be replaced individually after wear, without having to replace the entire valve, which greatly reduces the user's maintenance costs.

[0037] The gate plate 4 is a key component for controlling the medium flow, which is vertically lifted in the gate hole 2b by a hydraulic device. Figure 3 As shown in the figure, the lower part of the gate plate 4 is designed in a wedge structure, which not only facilitates the gate plate to extrude the bidirectional valve seat 3 to widen the sealing line and increase the sealing effect when closing, but also can cut slag during the opening and closing process to increase the sealing performance. At the same time, the wedge structure of the gate plate will not damage the valve seat when closing the valve, which ensures the long-term stable operation of the valve.

[0038] The hydraulic device includes a bracket 8, a connecting rod 9 and a hydraulic cylinder; the cylinder body 11 of the hydraulic cylinder is fixed on the top of the valve body 2 through the bracket 8, the top of the gate plate 4 is fixedly connected with one end of the connecting rod 9, and the other end of the connecting rod 9 is sealingly connected with the piston 10 of the hydraulic cylinder after penetrating through the cylinder body 11 of the hydraulic cylinder; when the external hydraulic station inputs medium to push the piston 10 in the cylinder body 11 to move up and down, the piston 10 drives the gate plate 4 to lift through the connecting rod 9, thereby controlling the opening and closing of the valve.

[0039] The upper sealing assembly includes a rectangular sealing ring 5, a sealing filler 6 and a gland 7; a rectangular groove matched with the rectangular sealing ring 5 is arranged at the top of the gate hole 2b, and the rectangular sealing ring 5 is used to prevent the medium from leaking from the upper part of the gate hole 2b; the sealing filler 6 is filled on the rectangular sealing ring 5, and the sealing filler 6 is made of graphite material and has good sealing performance; the gland 7 is fixedly connected with the valve body 2 to compact the sealing filler 6, thereby further enhancing the sealing effect.

[0040] A slag guide groove is arranged at the lower end of the gate hole 2b, which is used to collect the impurities and slag liquid cut down by the gate plate 4 during the opening and closing process; a slag discharge device 1 is sealingly fixedly connected at the outlet of the slag guide groove, which includes a tubular slag discharge pipe, and sealing pipe threads matched with the cap 13 are arranged at both ends of the slag discharge pipe; when it is necessary to remove the slag liquid, the cap 13 can be opened to discharge the slag liquid from the slag discharge device 1.

[0041] When the valve needs to be opened, the external hydraulic station inputs medium to push the piston 10 in the cylinder body 11 to move upwards, the piston 10 drives the gate plate 4 to rise through the connecting rod 9, and the sealing surface between the gate plate 4 and the bidirectional valve seat 3 gradually separates, and the medium begins to flow through the passage I 2a and the passage II 3a; when the valve needs to be closed, the external hydraulic station inputs medium to push the piston 10 in the cylinder body 11 to move downwards, the piston 10 drives the gate plate 4 to descend through the connecting rod 9, and the wedge structure of the gate plate 4 gradually extrudes the inner sealing surface 12 of the bidirectional valve seat 3 to widen the sealing line and increase the sealing effect; at the same time, the gate plate 4 cuts the impurities and slag liquid in the medium during the descending process, which are collected in the slag guide groove and discharged through the slag discharge device 1.

[0042] In the closed state, the inner sealing surface 12 of the bidirectional valve seat 3 forms a tight linear sealing pair with the gate plate 4, preventing the medium from leaking inward or outward; at the same time, the upper sealing assembly on the upper part of the valve body 2 also ensures that the medium does not leak from the upper part of the gate hole 2b; this double-sealing design greatly improves the sealing performance and service life of the valve.

[0043] The hydraulic double-sealing gapless valve has many advantages, making it widely used in the transportation of fine particle materials in the mining, metallurgy, power plant, coal, and chemical industries, as well as in the transportation of slurry and sewage.

[0044] The hydraulic double-sealing gapless valve adopts a bidirectional valve seat design, ensuring that the medium does not leak inward or outward in the closed state; this double-sealing structure greatly improves the sealing performance and service life of the valve.

[0045] During the closing process of the valve, the wedge-shaped structure of the gate plate can cut impurities and slag in the medium, which are collected in the slag guide groove and discharged through the slag discharge device. This design effectively prevents the influence of accumulated slag on the sealing performance of the valve, improving the operating efficiency of the valve.

[0046] The design of the bidirectional valve seat allows it to be replaced individually after wear, without the need to replace the entire valve; this design greatly reduces the maintenance cost of users and improves the usability of the valve.

[0047] The hydraulic device uses a hydraulic cylinder to control the lifting of the gate plate, with the characteristic of large output torque; this makes the valve run smoothly and reliably during opening and closing, reducing vibration and noise caused by medium impact.

[0048] The hydraulic double-sealing gapless valve is suitable for pipeline systems with a nominal diameter of 1200mm or less, especially for fine particle material transportation pipelines in the mining, metallurgy, power plant, coal, and chemical industries, as well as for slurry and sewage applications; its superior performance and wide range of applications make it highly competitive in the market.

[0049] The hydraulic double-sealing gapless valve can be used with a hydraulic station to achieve remote operation; this allows users to control the opening and closing of the valve from a distance, improving the safety and convenience of operation.

[0050] The upper sealing assembly on the upper part of the valve body adopts a design combining rectangular sealing rings and graphite packing, ensuring that the sealing performance of the valve remains good during long-term use; at the same time, the inner sealing surface of the bidirectional valve seat is made of rubber, which has good elasticity and wear resistance, further improving the sealing performance and service life of the valve.

Claims

1. A hydrodynamic double-seal gapless valve, characterized in that, The valve body (2), the two-way valve seat (3), the gate plate (4) and the hydraulic device are included, the upper gate hole (2b) is arranged in the vertical center of the valve body (2), the gate plate (4) capable of being vertically lifted by the hydraulic device is installed in the gate hole (2b), the upper sealing assembly is arranged at the upper end of the gate hole (2b); the channel I (2a) is arranged in the transverse center of the valve body (2), the two-way valve seat (3) is respectively inserted in the left and right ends of the valve body (2), the two-way valve seat (3) is sealingly inserted in the channel I (2a), the channel II (3a) is arranged in the transverse center of the two-way valve seat (3), the inner sealing surface (12) is arranged on the inner surface of the two-way valve seat (3), and the gap formed between the inner sealing surfaces (12) on the inner sides of the two two-way valve seats (3) is in interference fit with the gate plate (4).

2. A hydrodynamic double-seal zero-leakage valve according to claim 1, characterized in that The hydraulic device includes the bracket (8), the connecting rod (9) and the hydraulic cylinder, the cylinder body (11) of the hydraulic cylinder is fixed on the top of the valve body (2) through the bracket (8), the top of the gate plate (4) is fixedly connected with one end of the connecting rod (9), and the other end of the connecting rod (9) is sealingly connected with the piston (10) of the hydraulic cylinder after penetrating through the cylinder body (11) of the hydraulic cylinder.

3. A hydraulic double-seal gapless valve according to claim 1, wherein The slag guide groove is arranged at the lower end of the gate hole (2b), the slag discharging device (1) is sealingly and fixedly connected at the outlet of the slag guide groove, and the detachable cap (13) is arranged at the slag discharging port of the slag discharging device (1).

4. A hydrodynamic double-seal zero-leakage valve according to claim 3, characterized in that The slag discharging device (1) includes the tubular slag discharging pipe, and the sealing pipe threads matched with the cap (13) are arranged at the two ends of the slag discharging pipe.

5. A hydrodynamic double-seal zero-leakage valve according to claim 1, characterized in that The upper sealing assembly includes the rectangular sealing ring (5), the sealing filler (6) and the gland (7), the rectangular recess matched with the rectangular sealing ring (5) is arranged at the top of the gate hole (2b), the sealing filler (6) is filled on the rectangular sealing ring (5), and the gland (7) is fixedly connected with the valve body (2) to compact the sealing filler (6).

6. A hydrodynamic double-seal zero-leakage valve according to claim 5, characterized in that The sealing filler (6) is graphite.

7. A hydraulic double-seal gapless valve according to claim 1, wherein The groove (3c) is arranged in the skeleton (3b) of the outer circular shaft of the two-way valve seat (3), and the outer rubber lining (3d) is installed in the skeleton (3b).

8. A hydrodynamic double-seal zero-leakage valve according to claim 1, characterized in that The lower part of the gate plate (4) is arranged in a wedge shape.

9. A hydraulic double-seal gapless valve according to claim 1, wherein Threaded holes for fixedly connecting with pipelines are arranged on the left and right sides of the valve body (2), and the threaded holes are uniformly distributed along the circumference with the channel I (2a) as the center.

10. A hydrodynamic double-seal zero-leakage valve according to claim 9, characterized in that The concave stop and the convex stop matched with each other are arranged at the two ends of the channel I (2a) and the outer side of the two-way valve seat (3), and the pipeline is fixedly connected with the valve body (2), so that the pipeline tightly fixes the two-way valve seat (3) on the valve body (2).

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