Water conservancy sealing valve

Abstract

The invention relates to the technical field of valves, and discloses a water conservancy sealing valve which comprises a valve clack, the valve clack comprises a valve element plug, a limiting stylus is arranged at the lower end of the valve element plug, a sealing cylinder is installed on the outer side wall of the limiting stylus through a fixing rod, a water inlet is formed in the lower end of the sealing cylinder, a piston is arranged in the sealing cylinder, and a water outlet is formed in the lower end of the piston. A reset spring is installed between the piston and the sealing cylinder, a pushing column is arranged on the piston, a first sealing seat is rotationally connected to the pushing column through a first rotating rod, a first torsional spring is arranged at the hinged position of the first rotating rod and the pushing column, and a pushing frame is installed on the upper end face of the piston through a plurality of pushing springs; a second sealing seat is rotationally connected to the pushing frame through a second rotating frame, a second torsional spring is arranged at the hinged position of the second rotating frame and the pushing frame, and the water conservancy sealing valve can achieve reliable sealing under different working conditions through a multi-sealing structure and a self-adaption mechanism and only through linkage of fluid pressure and a mechanical structure.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, in particular to a hydraulic sealing valve. Background Art

[0002] In the fields of water conservancy projects and ocean observation, water conservancy valves, as core components of fluid control, have a sealing performance that directly affects project safety and equipment operating efficiency. Taking shore-based marine hydrological and meteorological observation stations, offshore platform-based observation stations, and shipboard hydrological and meteorological observation systems as examples, water conservancy valves are subjected to long-term erosion and fluctuations of high-pressure seawater in the hydraulic systems of equipment such as high-frequency ground waves, S / C / X-band wave radars, and in the fluid control links of shipboard hydrological and geological survey winches. At the same time, marine water quality and ecological elements, acoustic and optical measurement and detection equipment, and mobile observation platforms such as hydrological, meteorological, and water quality observation buoys, submersible buoys, and seabed-based platforms must cope with high water pressures when operating in the deep sea. Traditional water conservancy valves use single rubber seals or mechanical extrusion structures, which are prone to problems such as seal wear and structural deformation due to high pressure.

[0003] The Chinese patent application number "CN202421025783.4" bellows stop check valve solves the above problems. However, this patent only relies on the physical extrusion of rubber blocks. When faced with complex working conditions (such as large pressure fluctuations, impurities in the water, etc.), it is difficult to ensure a stable and reliable sealing effect, and leakage problems are prone to occur, affecting the normal operation of the water conservancy system.

[0004] Therefore, it is necessary to provide a hydraulic sealing valve to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic sealing valve to solve the existing problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The cam is hinged on the cam frame, and the cam frame is hinged on the cam frame, is fixed with a first end face and a second end face thereof, and the cam frame is hinged on the cam frame and is closed by the cam.

[0008] As a further solution of the present invention, a preset ring is fixedly provided in the valve body, and the preset ring includes an upper positioning ring, a vertical connecting portion is provided on the side wall of the upper positioning ring, and a lower locking ring is fixedly connected to the lower end of the vertical connecting portion. An annular positioning hole is opened at the lower end of the valve core plug, and the preset ring is located in the annular positioning hole.

[0009] As a further solution of the present invention, the first sealing seat is provided with a first upper inclined surface and a first lower inclined surface, and the first upper inclined surface and the first lower inclined surface are smoothly transitioned, and the side wall of the first sealing seat is provided with a symmetrical first wedge surface.

[0010] As a further solution of the present invention, a second upper inclined surface and a second lower inclined surface are provided on the second sealing seat, and the second upper inclined surface and the second lower inclined surface have a smooth transition. A second wedge surface is symmetrically provided on the side wall of the second sealing seat, and the second wedge surface is against the first wedge surface.

[0011] As a further solution of the present invention, a second upper inclined surface and a second lower inclined surface are provided on the second sealing seat, and the second upper inclined surface and the second lower inclined surface have a smooth transition. A second wedge surface is symmetrically provided on the side wall of the second sealing seat, and the second wedge surface is against the first wedge surface.

[0012] As a further solution of the present invention, a second upper inclined surface and a second lower inclined surface are provided on the second sealing seat, and the second upper inclined surface and the second lower inclined surface have a smooth transition. A second wedge surface is symmetrically provided on the side wall of the second sealing seat, and the second wedge surface is against the first wedge surface.

[0013] As a further solution of the present invention, a circular cavity and a movable long cavity are provided in the valve core plug, a movable disk is installed in the circular cavity through a damping bearing, a locking block is slidably connected to the movable disk, a limited push hole is provided on the movable disk, the locking block includes a locking strip, a slot is provided on the inner wall of the sealing channel, an L-shaped strip is provided at the end of the locking strip, and the L-shaped strip is clamped in the slot, a push column is provided on the locking strip, and the push column is located in the limited push hole, and a locking groove is provided on the side wall of the locking plug.

[0014] As a further solution of the present invention, a circular cavity and a movable long cavity are provided in the valve core plug, a movable disk is installed in the circular cavity through a damping bearing, a locking block is slidably connected to the movable disk, a limited push hole is provided on the movable disk, the locking block includes a locking strip, a slot is provided on the inner wall of the sealing channel, an L-shaped strip is provided at the end of the locking strip, and the L-shaped strip is clamped in the slot, a push column is provided on the locking strip, and the push column is located in the limited push hole, and a locking groove is provided on the side wall of the locking plug.

[0015] The hydraulic sealing valve of the present invention achieves efficient sealing and reliable operation through multiple sealing structures and adaptive mechanisms. The wedge-shaped surfaces of the first sealing seat and the second sealing seat in the valve disc abut against each other, and cooperate with the rubber sealing sleeve to form a composite sealing system that combines flexibility and rigidity, which can fit tightly against the inner wall of the sealing groove and effectively block the fluid. When the water pressure inside the valve increases, the water flow pushes the piston upward, further stretching the sealing seat, so that the sealing surface and the sealing groove fit more tightly, achieving a self-compensation effect where the greater the pressure, the tighter the seal, thereby improving the sealing reliability. The cooperation between the embedded ring and the annular positioning hole provides axial positioning and radial limiting for the valve disc, avoiding sealing failure caused by eccentricity of the valve disc, and ensuring precise docking between the sealing seat and the sealing groove. In addition, the locking ring structure of the sealing seat compacts the sealing surface through mechanical limiting, thereby enhancing the sealing stability. This design does not require a complex power system, and can achieve reliable sealing under different working conditions by relying solely on the linkage of fluid pressure and mechanical structure. It is suitable for scenes with high sealing requirements in water conservancy projects and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 It is a structural diagram of embodiment 1 of the present invention;

[0018] Figure 2 is a cross-sectional view of Example 1 of the present invention;

[0019] Figure 3 In the present invention Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4is the structure diagram of the valve disc part in the embodiment one of the present application;

[0021] Figure 5 is the perspective view of the valve disc in the embodiment one of the present application

[0022] Figure 6 is Figure 5 is the structure diagram of the valve core plug, the limiting flower column and the fixed rod in the embodiment one of the present application;

[0023] Figure 7 is the structure diagram of the first sealing seat and the connecting structure in the embodiment one of the present application;

[0024] Figure 8 is the structure diagram of the second sealing seat and the connecting structure in the embodiment one of the present application;

[0025] Figure 9 is the structure diagram of the second sealing seat and the connecting structure in the embodiment one of the present application;

[0026] Figure 10 is Figure 8 and Figure 9 is the structure diagram in the combined state;

[0027] Figure 11 is the structure diagram of the preset ring in the embodiment one of the present application;

[0028] Figure 12 is the structure diagram of the embodiment two of the present application;

[0029] Figure 13 is the structure diagram of the embodiment two of the present application after the locking plug is cut open;

[0030] Figure 14 is Figure 13 is the enlarged view of B in the embodiment two of the present application;

[0031] Figure 15 is the structure diagram of the embodiment two of the present application after the locking plug is removed;

[0032] Figure 16 is the structure diagram of the valve core plug in the embodiment two of the present application;

[0033] Figure 17 is the structure diagram of the connecting state of the movable disc and the locking block in the embodiment two of the present application;

[0034] Figure 18 is the structure diagram of the knob part in the embodiment two of the present application

[0035] In the figure: 1, valve body; 2, valve cover; 3, packing; 4, packing gland; 5, valve stem; 6, handwheel; 7, valve disc; 701, valve core plug; 702, limiting style; 703, fixing rod; 704, sealing cylinder; 705, water inlet; 706, piston; 707, return spring; 708, push column; 709, first rotating rod; 710, first sealing seat; 7101, first upper inclined surface; 7102, first lower inclined surface; 7103, first wedge surface; 7104, first locking ring; 711, push spring; 712, push frame; 713, second rotating frame; 714, second sealing seat; 71 41. Second upper inclined surface; 7142. Second lower inclined surface; 7143. Second wedge-shaped surface; 7144. Second locking ring; 715. Rubber sealing sleeve; 716. Annular positioning hole; 717. Locking plug; 8. Sealing groove; 9. Preset ring; 901. Upper positioning ring; 902. Vertical connecting part; 903. Lower locking ring; 10. Flower-shaped rod; 11. Slot; 12. Locking groove; 13. Movable disk; 14. Locking block; 1401. Locking strip; 1402. L-shaped strip; 1403. Push column; 15. Limit push hole; 16. Knob; 17. Slot; 18. Flower-shaped groove; 19. Movable long cavity. DETAILED DESCRIPTION

[0036] Example 1

[0037] like Figures 1-11 The figure shows a hydraulic sealing valve, comprising a valve body 1, wherein both ends of the valve body 1 are connected with an inlet pipe and a water outlet pipe through screw covers. Specifically, both ends of the valve body 1 are fixedly connected with threaded collars, and the ends of the water inlet pipe and the water outlet pipe are provided with screw covers, and the screw covers are threadedly connected to the threaded collars. Through the tightening action of the screw covers, the pipeline and the valve body 1 can be quickly docked, and the connection is reliable, effectively preventing leakage at the connection. A valve cover 2 is installed on the valve body 1 through a locking screw, and a packing 3 is provided on the valve cover 2. A packing gland 4 is installed on the packing 3. A valve stem 5 is provided in the packing gland 4, and a handwheel 6 is provided on the valve stem 5. The lower end of the valve stem 5 extends into the valve body 1 and is provided with a valve disc 7. When the handwheel 6 is turned, the rotational motion is transmitted to the valve disc 7 at the lower end through the valve stem 5. The valve stem 5 cooperates with the packing 3 and the packing gland 4 to ensure that the fluid inside the valve body 1 will not leak along the valve stem 5.

[0038] The valve disc 7 includes a valve core plug 701, and the valve stem 5 is installed on the valve core plug 701. The lower end of the valve core plug 701 is limited by a stylet 702. The stylet 702 can guide and limit the movement of the push column 708 and the push frame 712. A sealing cylinder 704 is installed on the outer wall of the limiting stylet 702 through a fixing rod 703. A rubber sealing sleeve 715 is sleeved on the outer wall of the sealing cylinder 704. The rubber sealing sleeve 715 can fit tightly against the inner wall of the sealing channel to form a first sealing barrier, preliminarily blocking the fluid and reducing the risk of leakage. A water inlet 705 is provided at the lower end of the sealing cylinder 704, and a piston 706 is provided in the sealing cylinder 704. A return spring 707 is installed between the piston 706 and the sealing cylinder 704. The return spring 707 provides power for the piston 706 to reset. When the water pressure When the force disappears or decreases, it can push the piston 706 back to its initial position. A pushing column 708 is provided on the piston 706, and the pushing column 708 is slidingly connected to the limiting stud 702. The pushing column 708 is rotatably connected to the first sealing seat 710 through the first rotating rod 709. A first torsion spring is provided at the hinge of the first rotating rod 709 and the pushing column 708. The first torsion spring can provide a restoring force for the first rotating rod 709 to assist the first sealing seat 710 to reset smoothly when sealing is not required. The upper end surface of the piston 706 is installed with a pushing frame 712 through multiple pushing springs 711, and the pushing frame 712 is slidably connected to the limiting stud 702. The pushing frame 712 is rotatably connected to the second sealing seat 714 through the second rotating frame 713, and a second torsion spring is provided at the hinge of the second rotating frame 713 and the pushing frame 712. It is worth noting that each second sealing seat 714 is located between two adjacent first sealing seats 710, and each first sealing seat 710 is located between two adjacent second sealing seats 714. The first sealing seats 710 and the second sealing seats 714 are tightly connected in sequence.

[0039] A water inlet channel and a water outlet channel are provided inside the valve body 1, and the water inlet channel and the water outlet channel are connected through a sealing channel, and the valve disc 7 is located in the sealing channel, and the rubber sealing sleeve 715 is against the inner wall of the sealing channel, and a preset ring 9 is fixed in the sealing channel, the preset ring 9 includes an upper positioning ring 901, and a vertical connecting part 902 is provided on the side wall of the upper positioning ring 901, and the lower end of the vertical connecting part 902 is fixedly connected to a lower locking ring 903, and an annular positioning hole 716 is provided at the lower end of the valve core plug 701, and the preset ring 9 is located in the annular positioning hole 716. The valve core plug 701 of the valve disc 7 is mounted on the preset ring 9 through the annular positioning hole 716. The upper positioning ring 901, the vertical connecting part 902 and the lower locking ring 903 of the preset ring 9 form a fixed support. The upper positioning ring 901 and the lower locking ring 903 provide axial positioning for the valve disc 7 to ensure that the valve disc 7 maintains central symmetry during movement and avoids sealing failure due to eccentricity. At the same time, the cooperation between the annular positioning hole 716 and the preset ring 9 limits the radial shaking of the valve disc 7 and ensures the docking of the sealing seat and the sealing groove 8.

[0040] The first sealing seat 710 is provided with a first upper inclined surface 7101 and a first lower inclined surface 7102, and the first upper inclined surface 7101 and the first lower inclined surface 7102 are smoothly transitioned. The side wall of the first sealing seat 710 is provided with a symmetrical first wedge surface 7103. The second sealing seat 714 is provided with a second upper inclined surface 7141 and a second lower inclined surface 7142, and the second upper inclined surface 7141 and the second lower inclined surface 7142 are smoothly transitioned. A second wedge surface 7143 is symmetrically provided on the side wall, and the second wedge surface 7143 is abutted against the first wedge surface 7103. The upper end of the first sealing seat 710 is installed with a first locking ring 7104, and the upper end of the second sealing seat 714 is installed with a second locking ring 7144. The first locking ring 7104 and the second locking ring 7144 are connected in sequence to form a locking ring, and the locking ring is clamped between the lower end surface of the valve core plug 701 and the upper end surface of the lower locking ring 903.

[0041] A sealing groove 8 is provided on the inner wall of the sealing channel, and the first sealing seat 710 and the second sealing seat 714 are both located in the sealing groove 8. Specifically, the first upper inclined surface 7101 portion, the first lower inclined surface 7102 portion and their smooth transition portions, the second upper inclined surface 7141 portion, the second lower inclined surface 7142 portion and their smooth transition portions are located in the sealing groove 8.

[0042] When the valve needs to be closed, the hand wheel 6 is turned downward, the valve stem 5 drives the valve disc 7 to move downward, and the valve core plug 701 moves downward into the sealing channel. At this time, water flows into the sealing cylinder 704 from the water inlet 705, and the water flow pressure pushes the piston 706 to overcome the resistance of the return spring 707 and move upward. The piston 706 drives the first rotating rod 709 to rotate through the push column 708. The first rotating rod 709 pushes the first sealing seat 710 to expand outward from the inside of the sealing cylinder 704 until the first locking ring on the first sealing seat 710 is released. 7104 is stuck between the valve core plug 701 and the lower locking ring 903. In the early stage of the movement of the piston 706, the piston 706 compresses the push spring 711. When the first sealing seat 710 moves to a predetermined position, the push spring 711 restores its original length and the elastic force drives the push frame 712 to move upward. The push frame 712 drives the second rotating frame 713 to rotate, causing the second sealing seat 714 to expand outward until the second locking ring 7144 on the second sealing seat 714 is stuck between the valve core plug 701 and the lower locking ring 903.

[0043] The first wedge surface 7103 of the first sealing seat 710 and the second wedge surface 7143 of the second sealing seat 714 abut against each other, and the first sealing seat 710 and the second sealing seat 714 are tightly connected in sequence. After being stretched outward and fitting against the inner wall of the sealing groove 8, an outward thrust will be generated, making the sealing seat fit more closely against the sealing groove 8.

[0044] At this time, the first upper inclined surface 7101, the first lower inclined surface 7102, the second upper inclined surface 7141, the second lower inclined surface 7142 and their smooth transition parts are embedded in the sealing groove 8. At this time, the water flow in the water inlet channel is blocked by the double seal of the rubber sealing sleeve 715, the first sealing seat 710 and the second sealing seat 714. The increase in water pressure inside the water inlet channel will only push the first sealing seat 710 and the second sealing seat 714 to move upward, and the first locking ring 7104 and the second locking ring 7144 block the movement of the first sealing seat 710 and the second sealing seat 714 under the limiting action of the valve core plug 701 and the lower locking ring 903, thereby realizing the sealing of the first sealing seat 710 and the second sealing seat 714, making the sealing seat and the sealing groove 8 fit more closely, and realizing the self-compensation effect that the greater the pressure, the tighter the seal.

[0045] To open the valve, turn handwheel 6 downward, causing valve stem 5 to move valve disc 7 upward. This reduces the water pressure in sealing cylinder 704, and reset spring 707 pushes piston 706 downward, causing push column 708 and first rotating rod 709 to return to their original positions. This causes first sealing seat 710 to retract inward. Push spring 711 contracts, pulling push frame 712 and second rotating frame 713 back to their original positions, causing second sealing seat 714 to retract inward.

[0046] Example 2

[0047] Based on the first embodiment, Figures 12-18 As shown, the valve disc 7 is divided into two parts: a valve core plug 701 and a locking plug 717. The valve core plug 701 has a built-in locking mechanism and can be independently blocked in the sealing channel; the locking plug 717 is connected to the valve stem 5 and is separated from the valve core plug 701 through the locking mechanism.

[0048] A circular cavity and a movable long cavity 19 are provided in the valve core plug 701, and the circular cavity and the movable long cavity 19 are connected, and the locking mechanism is installed in the circular cavity and the movable long cavity 19. A movable disk 13 is installed in the circular cavity through a damping bearing. The damping bearing can provide stable support for the rotation of the movable disk 13, reduce friction and shaking during the rotation process, and ensure the smoothness and accuracy of the rotation of the movable disk 13. A locking block 14 is slidably connected to the movable disk 13, and a limited push hole 15 is provided on the movable disk 13. The locking block 14 includes a locking strip 1401, and a card groove 11 is provided on the inner wall of the sealing channel. An L-shaped card strip 1402 is provided at the end of the locking strip 1401, and the L-shaped card strip 1402 is clamped in the card groove 11. A push column 1403 is provided on the locking strip 1401, and the push column 1403 is located in the limited push hole 15. A locking groove 12 is provided on the side wall of the locking plug 717.

[0049] During use, when it is necessary to separate the valve core plug 701 and the locking plug 717, the rotation of the movable disk 13 is used to push the push column 1403 through the limit push hole 15, and the push column 1403 drives the locking strip 1401 and the L-shaped card strip 1402 to move in the direction of the card slot 11. At this time, the L-shaped card strip 1402 is disengaged from the locked locking slot 12. At this time, the valve core plug 701 and the locking plug 717 can be separated. At this time, the valve core plug 701 in the valve disc 7 can be partially blocked in the sealing channel. The valve core plug 701 relies on the original sealing structure (such as the rubber sealing sleeve 715, the first / second sealing seat) to block the sealing channel. At this time, the valve stem 5 only drives the locking plug 717 to move upward, and the valve core plug 701 remains When the valve body 1 is closed, the valve stem 5 drives the valve stem 701 to move synchronously with the locking plug 717, thereby realizing the opening and closing of the valve.

[0050] A flower-shaped groove 18 is provided on the upper surface of the movable disk 13, and a flower-shaped rod 10 is vertically installed inside the valve stem 5. The upper end of the flower-shaped rod 10 is installed inside the valve stem 5 through a bearing, and the lower end of the flower-shaped rod 10 is inserted into the flower-shaped groove 18. A slot 17 is provided on the valve stem 5, and a knob 16 is provided on the outer sleeve of the flower-shaped rod 10, and the knob 16 is located in the slot 17. The knob 16 can be directly rotated through the slot 17, and the knob 16 drives the flower-shaped rod 10 to rotate, thereby realizing the rotation of the movable disk 13.

[0051] The valve cover 2 can be removed without cutting off the water flow. It is suitable for scenarios such as urban water supply networks and sewage treatment plants that require non-stop maintenance. After separation, only the locking plug 717 needs to be removed to inspect the valve stem 5, packing 3 and other components. The valve core plug 701 and its sealing structure do not need to be disassembled, reducing maintenance costs.

Claims

1. A hydraulic sealing valve, characterized in that: The cam is hinged on the cam frame and is provided with a spring which is fixed on the cam frame to the upper end of the cam frame, and the cam frame is hinged on the cam frame to form a circle, and the cam frame is hinged on the cam frame to form a circle.

2. A hydraulic sealing valve according to claim 1, characterized in that: A preset ring is fixedly provided in the valve body, and the preset ring includes an upper positioning ring. A vertical connecting portion is provided on the side wall of the upper positioning ring, and a lower locking ring is fixedly connected to the lower end of the vertical connecting portion. An annular positioning hole is provided at the lower end of the valve core plug, and the preset ring is located in the annular positioning hole.

3. A hydraulic sealing valve according to claim 1, characterized in that: The first sealing seat is provided with a first upper inclined surface and a first lower inclined surface, and the first upper inclined surface and the first lower inclined surface are smoothly transitioned. The side wall of the first sealing seat is provided with a symmetrical first wedge surface.

4. A hydraulic sealing valve according to claim 3, characterized in that: The second sealing seat is provided with a second upper inclined surface and a second lower inclined surface, and the second upper inclined surface and the second lower inclined surface are smoothly transitioned. The side wall of the second sealing seat is symmetrically provided with a second wedge surface, and the second wedge surface is against the first wedge surface.

5. The hydraulic sealing valve according to claim 2, characterized in that: A first locking ring is installed at the upper end of the first sealing seat, and a second locking ring is installed at the upper end of the second sealing seat. The first locking ring and the second locking ring are connected in sequence to form a locking ring, and the locking ring is clamped between the lower end surface of the valve core plug and the upper end surface of the lower locking ring.

6. The hydraulic sealing valve according to claim 1, characterized in that: The valve flap also includes a locking plug, which is separated from the valve core plug by a locking mechanism. The locking mechanism can independently block the valve core plug in the sealing channel.

7. A hydraulic sealing valve according to claim 6, characterized in that: A circular cavity and a movable long cavity are provided in the valve core plug, a movable disk is installed in the circular cavity through a damping bearing, a locking block is slidably connected to the movable disk, a limited push hole is provided on the movable disk, the locking block includes a locking strip, a card groove is provided on the inner wall of the sealing channel, an L-shaped card strip is provided at the end of the locking strip, and the L-shaped card strip is clamped in the card groove, a push column is provided on the locking strip, and the push column is located in the limited push hole, and a locking groove is provided on the side wall of the locking plug.

8. The hydraulic sealing valve according to claim 1, characterized in that: A flower-shaped groove is provided on the upper surface of the movable disk, a flower-shaped rod is vertically installed inside the valve stem, and the lower end of the flower-shaped rod is inserted into the flower-shaped groove, a slot is provided on the valve stem, and a knob is provided on the outer shell of the flower-shaped rod, and the knob is located in the slot.

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