Anti-leakage self-sealing valve

Abstract

The utility model relates to the technical field of valves, and discloses an anti-leakage self-sealing valve which comprises a valve body, the two sides of the valve body are communicated and connected with connecting pipes, the top end of the valve body is fixedly connected with a valve seat, the top end of the valve seat is detachably connected with a valve rod sleeve, and communicating holes are vertically formed in inner cavities of the valve seat and the valve rod sleeve. A sealing head is slidably sleeved with a communicating hole of an inner cavity of the valve seat, and a connecting valve rod is in threaded connection with the interior of a communicating hole of an inner cavity of the valve rod sleeve. Two-layer plugging can be formed on the water through hole, the clamping groove and the sealing ring are clamped to ensure the sealing effect, meanwhile, the elastic connecting rod is used for buffering the impact force of water flow, the sealing head and the valve body are prevented from being subjected to large vibration, and then loosening is avoided; and the elastic connecting rod can be protected against water erosion through the telescopic sleeve while buffering is conducted, the service life is further prolonged, the sealing stability is further improved, and the practical effect of the sealing valve is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a leakage-proof self-sealing valve. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of types and specifications, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and non-standard custom valve materials according to their materials.

[0003] Some existing sealing valves are subject to the impact of water flow during use, which may cause the sealing structure to loosen, thereby reducing the sealing effect of the connection, and causing medium leakage when the valve is closed. This not only wastes resources, but may also cause damage to equipment and the environment, and may cause corrosion and damage to the valve itself, reducing the service life and reliability of the valve. To this end, we propose a leakage-proof self-sealing valve. Utility Model Content

[0004] The main purpose of the utility model is to provide a leakage-proof self-sealing valve, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a leakage-proof self-sealing valve comprising a valve body, connecting pipes are interconnected on both sides of the valve body, a valve seat is fixedly connected to the top of the valve body, a valve stem sleeve is detachably connected to the top of the valve seat, and a connecting hole is vertically opened in the inner cavity of the valve seat and the valve stem sleeve, a sealing head is provided in the sliding sleeve inside the connecting hole of the inner cavity of the valve seat, a connecting valve stem is threadedly connected to the inner surface of the connecting hole of the inner cavity of the valve stem sleeve, and the bottom end of the connecting valve stem is rotatably connected to the top end of the sealing head by rotating the connecting shaft, a water inlet chamber is opened at the lower end of one side of the inner cavity of the valve body, a drainage chamber is opened at the side of the inner cavity of the valve body relative to the water inlet chamber, a water through hole is opened on the side of the water inlet chamber facing the drainage chamber and corresponding to the sealing head, and a sealing ring is provided around the periphery of the upper surface of the water through hole.

[0006] Preferably, the sealing head includes a nested rod, a first plug, a second plug, a telescopic connecting sleeve and an elastic connecting rod. A nested rod is slidably nested inside the inner communicating hole of the valve body. The bottom end of the nested rod is fixedly connected to the first plug. The bottom end of the first plug is detachably connected to a plurality of elastic connecting rods. The bottom end of the elastic connecting rod is fixedly connected to the second plug, and the second plug is adapted to the through hole water. The telescopic connecting sleeve is fixedly connected to the edges around the opposite surfaces of the first plug and the second plug.

[0007] Preferably, an annular clamping groove is provided on the lower surface of the first plug, and the clamping groove is adapted to the sealing ring.

[0008] Preferably, the top end of the connecting valve stem is fixedly connected to a handle wheel, and the surface of the handle wheel is covered with a protective sleeve.

[0009] Preferably, a sealing shaft is nested at the bottom end of the inner cavity of the internal communicating hole of the valve seat.

[0010] Preferably, the outer side walls of the connecting pipes are fixedly connected with connecting flanges, and the inner sides of the connecting pipes are interconnected with the water inlet cavity and the drain pipe respectively.

[0011] Preferably, the surfaces of the valve body, connecting pipe, connecting flange, valve seat, valve stem sleeve and connecting valve stem are all coated with a corrosion-resistant layer.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure. When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure. When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure. When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure. When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure. When the closure is closed, the first and second sealing members are engaged with each other to form a double-layer sealing structure, thereby effectively sealing the closure.

[0014] 2. The utility model cooperates with each other by arranging a first plug, a second plug, an elastic connecting rod and a telescopic sleeve. The second plug and the first plug are connected by the elastic connecting rod, so that the impact of the water flow can be buffered during sealing, thereby ensuring stability during use. The telescopic sleeve at the edges of the first plug and the second plug can cover the elastic connecting rod on the inside, so that it will not be eroded by water during long-term use, effectively protecting the elastic connecting rod, further improving the service life, and ensuring stability during sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the overall plan view of the utility model;

[0017] Figure 3 It is a structural diagram of the utility model A;

[0018] Figure 4 This is a schematic diagram of the planar structure of the sealing head of the utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the sealing head of the utility model.

[0020] In the figure: 1. valve body; 2. connecting pipe; 3. connecting flange; 4. valve seat; 5. valve stem sleeve; 6. connecting valve stem; 7. handle wheel; 8. water inlet chamber; 9. drain chamber; 10. connecting hole; 11. sealing shaft; 12. sealing head; 13. water through hole; 14. sealing ring; 15. snap-in groove; 121. nesting rod; 122. first plug; 123. second plug; 124. telescopic connecting sleeve; 125. elastic connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example

[0023] See also Figure 1 - Figure 5, a leakage-proof self-sealing valve shown in the figure includes a valve body 1, both sides of the valve body 1 are interconnected with connecting pipes 2, the top of the valve body 1 is fixedly connected to a valve seat 4, the top of the valve seat 4 is detachably connected to a valve stem sleeve 5, and the inner cavities of the valve seat 4 and the valve stem sleeve 5 are vertically provided with a communicating hole 10, the communicating hole 10 in the inner cavity of the valve seat 4 is internally slidably sleeved with a sealing head 12, the communicating hole 10 in the inner cavity of the valve stem sleeve 5 is internally threadedly connected to a connecting valve stem 6, and the bottom end of the connecting valve stem 6 is rotatably connected to the top end of the sealing head 12 by rotating the connecting shaft, a water inlet chamber 8 is provided at the lower end of one side of the inner cavity of the valve body 1, and the inner cavity of the valve body 1 is relative to the inlet A drainage chamber 9 is provided on one side of the water chamber 8, and a water hole 13 is provided on the side of the water inlet chamber 8 facing the drainage chamber 9 and at a position corresponding to the sealing head 12. A sealing ring 14 is provided around the upper surface of the water hole 13; the connecting hole 10 between the valve seat 4 and the valve stem sleeve 5 is designed to provide precise guidance for the movement of the sealing head 12, and the connecting valve stem 6 is linked with the sealing head 12 by rotating the connecting shaft, so that the sealing head 12 can fit tightly into the water hole 13, and cooperate with the sealing ring 14 to effectively prevent fluid leakage. At the same time, the connecting pipe 2 ensures seamless docking with the external pipeline system, thereby ensuring the safe, reliable and efficient operation of the entire fluid delivery pipeline.

[0024] The sealing head 12 includes a nesting rod 121, a first plug 122, a second plug 123, a telescopic connecting sleeve 124 and an elastic connecting rod 125. The inner communicating hole 10 of the valve body 1 is slidably nested with a nesting rod 121. The bottom end of the nesting rod 121 is fixedly connected to the first plug 122. The bottom end of the first plug 122 is detachably connected to a plurality of elastic connecting rods 125. The bottom end of the elastic connecting rod 125 is fixedly connected to the second plug 123, and the second plug 12 3 is adapted to the water flow through the through hole. A telescopic connecting sleeve 124 is fixedly connected to the edges of the four opposing surfaces of the first plug 122 and the second plug 123. An annular snap-fit ​​groove 15 is provided on the lower surface of the first plug 122, and the snap-fit ​​groove 15 is adapted to the sealing ring 14. Through the unique structure of the nested rod 121, the first plug 122, the second plug 123, the telescopic connecting sleeve 124 and the elastic connecting rod 125, the water flow through the through hole 13 is efficiently sealed and multiple protections are achieved. The double-layer sealing of the water flow through the through hole 13 by the first plug 122 and the second plug 123, combined with the tight engagement of the annular snap-fit ​​groove 15 and the sealing ring 14, ensures the tightness of the seal. The elastic connecting rod 125 provides a buffering effect when the water flow impacts, preventing the plug from loosening due to the impact. At the same time, the telescopic connecting sleeve 124 covers the elastic connecting rod 125 to prevent it from being eroded by the water body, effectively extending the service life of the sealing head 12 and enhancing the sealing stability and reliability of the valve as a whole.

[0025] Among them, the top of the connecting valve stem 6 is fixedly connected to a handle wheel 7, and the surface of the handle wheel 7 is covered with a protective sleeve, and a sealing shaft 11 is nested at the bottom end of the inner cavity of the internal connecting hole 10 of the valve seat 4, and the outer side walls of the connecting pipe 2 are fixedly connected to the connecting flange 3, and the inner side of the connecting pipe 2 is interconnected with the water inlet chamber 8 and the drain pipe respectively; by setting the handle wheel 7 at the top of the connecting valve stem 6 and the protective sleeve on its surface, convenient and safe manual operation of the valve is achieved, which is convenient for the operator to apply force to control the opening and closing of the valve, and the protective sleeve can effectively prevent slipping and protect the hands. At the same time, the nesting of the sealing shaft 11 in the valve seat 4 and the reasonable connection of the connecting pipe 2 with the water inlet chamber 8 and the drain chamber 9 and the fixation of the connecting flange 3 realize the construction of a stable fluid passage inside the valve and the effective sealing of key parts, ensuring the smooth transmission of the fluid in the valve body 1 and preventing leakage, improving the overall functionality and reliability of the valve, and making it better adaptable to the connection and operation requirements of various pipeline systems.

[0026] Among them, the surfaces of the valve body 1, connecting pipe 2, connecting flange 3, valve seat 4, valve stem sleeve 5 and connecting valve stem 6 are all coated with a corrosion-resistant layer; by coating the corrosion-resistant layer on the surfaces of the valve body 1, connecting pipe 2, connecting flange 3, valve seat 4, valve stem sleeve 5 and connecting valve stem 6, effective protection of each component is achieved, so that it can resist erosion by corrosive substances in the fluid medium and the surrounding environment, extend the service life of the entire valve, reduce the risks of performance degradation and leakage caused by corrosion, ensure the stable and reliable operation of the valve under corrosive working conditions, and reduce maintenance costs and replacement frequency.

[0027] It should be noted that the present invention is a self-sealing valve that prevents leakage. The valve is connected to the external water pipe through the connecting flanges 3 on the connecting pipes 2 on both sides, thereby realizing the communication of the pipeline. When the sealing valve is opened, the connecting valve stem 6 is rotated counterclockwise to drive the nesting rod 121 and the first plug 122 and the second plug 123 to move upward, so that the water hole 13 is opened, and the water circulates in the valve body 1 to realize the transportation of the water. When the valve is closed, the connecting valve stem 6 is rotated clockwise to drive the nesting rod 121, the first plug 122 and the second plug 123 to move upward, so that the water hole 13 is opened, and the water circulates in the valve body 1 to realize the transportation of the water. The second plug 123 moves downward, the first plug 122 is connected to the outer wall of the water hole 13, and the second plug 123 is inserted into the water hole 13 to form a two-layer seal. At the same time, the connecting groove 15 under the first plug 122 is engaged with the sealing ring 14 on the water hole 13. During the sealing process, if there is water impact, the elastic connecting rod 125 can be compressed to buffer the impact force, and the elastic connecting rod 125 is covered with the telescopic sleeve to prevent it from being eroded by the water body, thereby achieving reliable sealing, buffering protection and stable operation of the valve, and improving the overall performance and practicality of the sealing valve.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage-proof self-sealing valve, comprising a valve body (1), characterized in that: Both sides of the valve body (1) are interconnected with connecting pipes (2), the top of the valve body (1) is fixedly connected to a valve seat (4), the top of the valve seat (4) is detachably connected to a valve stem sleeve (5), and the inner cavities of the valve seat (4) and the valve stem sleeve (5) are vertically provided with a connecting hole (10), the inner sliding sleeve of the connecting hole (10) in the inner cavity of the valve seat (4) is provided with a sealing head (12), and the inner thread of the connecting hole (10) in the inner cavity of the valve stem sleeve (5) is connected to a connecting valve stem (6) The bottom end of the connecting valve stem (6) is rotatably connected to the top end of the sealing head (12) via a rotating connecting shaft. A water inlet cavity (8) is provided at the lower end of one side of the inner cavity of the valve body (1). A drainage cavity (9) is provided at a side of the inner cavity of the valve body (1) opposite to the water inlet cavity (8). A water through hole (13) is provided on the side of the water inlet cavity (8) facing the drainage cavity (9) and at a position corresponding to the sealing head (12). A sealing ring (14) is provided around the upper surface of the water through hole (13).

2. The anti-leakage self-sealing valve according to claim 1, characterized in that: The sealing head (12) includes a nested rod (121), a first plug (122), a second plug (123), a telescopic connecting sleeve (124) and an elastic connecting rod (125); the nested rod (121) is slidably nested inside the inner cavity communicating hole (10) of the valve body (1); the bottom end of the nested rod (121) is fixedly connected to the first plug (122); the bottom end of the first plug (122) is detachably connected to a plurality of elastic connecting rods (125); the bottom end of the elastic connecting rod (125) is fixedly connected to the second plug (123), and the second plug (123) is adapted to the through hole water; the telescopic connecting sleeve (124) is fixedly connected to the edges of the four sides of the opposing surfaces of the first plug (122) and the second plug (123).

3. The anti-leakage self-sealing valve according to claim 2, characterized in that: An annular clamping groove (15) is provided on the lower surface of the first plug (122), and the clamping groove (15) is adapted to the sealing ring (14).

4. The anti-leakage self-sealing valve according to claim 1, characterized in that: The top end of the connecting valve stem (6) is fixedly connected to a handle wheel (7), and the surface of the handle wheel (7) is covered with a protective sleeve.

5. The anti-leakage self-sealing valve according to claim 1, characterized in that: A sealing shaft (11) is nested at the bottom end of the inner cavity of the internal communicating hole (10) of the valve seat (4).

6. The anti-leakage self-sealing valve according to claim 1, characterized in that: The outer side walls of the connecting pipes (2) are fixedly connected with connecting flanges (3), and the inner sides of the connecting pipes (2) are interconnected with the water inlet cavity (8) and the drain pipe respectively.

7. The anti-leakage self-sealing valve according to claim 1, characterized in that: The surfaces of the valve body (1), the connecting pipe (2), the connecting flange (3), the valve seat (4), the valve stem sleeve (5) and the connecting valve stem (6) are all coated with a corrosion-resistant layer.

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