Valve element sealing structure of upward expanding valve
By incorporating an air bladder and a multi-layer sealing structure into the valve core of the upper-mounted valve, the problem of poor sealing performance of the upper-mounted valve under hard objects or easily crystallizing media is solved, enabling convenient valve core replacement and enhanced sealing effect, and reducing the risk of leakage.
Patent Information
- Application Number
- CN202423147079.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing top-mounted valves have poor sealing performance and are prone to leakage when encountering hard objects or easily crystallizing media.
An upward-expanding valve core sealing structure was designed. By setting an air bladder in the valve body, air is inflated into the air bladder through the air source interface and through hole, so that the air bladder fits against the surface of the sealing component. Combined with the sleeve structure of the nut sleeve and the valve core, convenient disassembly and installation are achieved, and the sealing performance is enhanced by the multi-layer sealing structure.
It effectively avoids gaps between crystals and sealing components, improves sealing performance, ensures quick valve core replacement and easy installation, enhances airtightness, and reduces the risk of leakage.
Smart Images
Figure CN223563472U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to valve technical field, concretely speaking, it is a kind of upper valve valve core sealing structure. BACKGROUND
[0002] Valve is the control component in fluid conveying system, with the functions of stop, regulation, flow guide, anti-backflow, pressure stabilization, shunt or overflow pressure relief. Valve is usually composed of valve core, valve body and switch for opening valve, and the passage for fluid circulation is arranged on valve body, and the valve is opened and closed by switch, so that fluid circulates and disconnects in valve body.
[0003] Upper valve, especially upper expansion type discharge valve, is a specially designed valve, mainly used for discharging, discharging, sampling and dead-zone closing operation at the bottom of reactor, storage tank and other containers.
[0004] The sealing principle of the upper valve and the lower valve on the market is that the valve core acts and forms a seal with the valve seat, which is prone to leakage when hard objects or crystalline media are encountered, and the sealing performance is poor.
[0005] Therefore, the utility model provides a kind of upper valve valve core sealing structure. INVENTION CONTENTS
[0006] In order to make up for the deficiencies of the prior art, at least one technical problem in the background art is solved.
[0007] The technical scheme adopted by the utility model to solve its technical problems is: the utility model discloses a kind of upper valve valve core sealing structure, including valve body;Sealing assembly is installed in the middle of the valve body, bracket is installed at the bottom of the valve body, vice flange is screw-connected at the top of the valve body, recess is set up in the middle of the valve body and vice flange, valve seat core is clamped in the valve body, air bag is provided at one end of the valve seat core, first through-hole is set up in the middle of the valve seat core, one end of the first through-hole is communicated with the air bag, gas source interface is communicated with one side of the valve body, second through-hole is set up in the middle of the valve body, one end of the second through-hole is communicated with the gas source interface, the other end of the second through-hole is communicated with the first through-hole, when working, first gas source interface is communicated with air pump, air flow enters second through-hole from gas source interface, passes through first through-hole to reach air bag, and gas fills air bag, so that air bag is full, air bag is attached to the surface of sealing assembly, and the edge of sealing assembly is resisted, to generate sealing effect;By setting gas source interface, second through-hole and first through-hole, air is filled into air bag, and air bag can make crystalline material more easily fall off, to avoid gap between sealing assembly.
[0008] Preferably, the sealing assembly comprises a valve shaft fixedly connected to the end portion, a nut sleeve fixedly connected to the outside of the valve shaft, a valve core provided at the end portion of the valve shaft, the nut sleeve is screwed with the valve core, the valve shaft, the nut sleeve and the valve core are slidably connected with the valve body, during operation, the nut sleeve is sleeved with the valve core, is fixed on the valve shaft through the screw, drives the valve shaft to reciprocate in the valve body, when sealing is needed, the air bag is filled and is combined with the valve core to realize the sealing effect, the nut sleeve is sleeved with the valve core, and then is fixed through the screw, so that the valve core is more convenient to disassemble and assemble, and quick replacement of the valve core is realized.
[0009] Preferably, the valve body, the auxiliary flange and the groove surface are all provided with clamping grooves, a plurality of clamping blocks are fixedly connected to the surface of the air bag, the clamping blocks correspond to the clamping grooves, during operation, when the air bag is filled with gas, the clamping blocks are pushed into the clamping grooves, the clamping grooves limit the clamping blocks, so that the clamping blocks are prevented from shaking, and the air bag is fixed and cannot fall off the valve seat core, so that the air bag is kept stable during operation.
[0010] Preferably, the air source interface is fixedly connected with a fixing ring on the outside, a plurality of spring telescopic rods are fixedly connected to one side of the fixing ring, a baffle is fixedly connected to one end of the spring telescopic rod, elastic cloth is arranged on the outside of the spring telescopic rod, one end of the elastic cloth is fixedly connected with the fixing ring, and the other end of the elastic cloth is fixedly connected with the baffle, during operation, when the air source interface is clamped on one side of the valve body, the baffle is made of soft material, the baffle preferentially contacts the surface of the valve body and is combined with the surface of the valve body, so as to wrap the outside of the air source interface, along with the advancement of the air source interface, the fixing ring also approaches the valve body, the spring telescopic rod is subjected to pressure, a pushing force is generated on the baffle, so that the baffle can be combined with the surface of the valve body, the phenomenon that the air tightness of the gap between the air source interface and the valve body is poor is reduced, the air source interface and the valve body gap leak out, the air in the elastic cloth, and the air cannot flow out, so that the sealing performance is improved.
[0011] Preferably, the fixing ring is fixedly connected with supporting rods on both sides, a sliding rod is threadedly connected to the middle portion of the supporting rod, and a pressing block is fixedly connected to the end portion of the sliding rod, during operation, the sliding rod is rotated, the distance between the pressing block and the valve body is adjusted, and the pressing block is abutted against the surface of the valve body, so that the air source interface can be supported and the phenomenon that the air source interface falls off from the top is reduced.
[0012] Preferably, the baffle is provided with a sealing ring on one side, the sealing ring is fixedly connected with the baffle, during operation, the sealing ring fills the gap between the air source interface and the valve body, and the gas leakage and the inflow of external air flow are further reduced.
[0013] The utility model discloses the following advantages:
[0014] 1. The utility model relates to a valve core sealing structure of upper expansion valve, through setting up gas source interface, second through -hole and first through -hole, to the gas bag inside inflation, gas bag can make crystalline more easily fall off, avoid and produce gap between sealing assembly.
[0015] 2. The utility model relates to a valve core sealing structure of upper expansion valve, through setting up nut cover and valve core cover, then by screw fixed, make the disassembly and installation of valve core more convenient, realize the quick replacement of valve core. DRAWINGS
[0016] The utility model makes further explanation below combining with the drawings.
[0017] Fig. 1 It is the plan view in the utility model,
[0018] Fig. 2 It is the structure schematic view of valve body in the utility model,
[0019] Fig. 3 It is the structure schematic view of gas bag in the utility model,
[0020] Fig. 4 It is the structure schematic view of gas source interface in the utility model,
[0021] Fig. 5 It is the structure schematic view of sealing ring in the utility model,
[0022] In the drawing: 1, valve body;101, support;102, vice flange;11, recess;12, valve seat core;13, gas bag;14, first through -hole;15, gas source interface;16, second through -hole;2, valve shaft;21, nut cover;22, valve core;3, clamping groove;31, clamping block;4, fixed ring;41, spring telescopic rod;42, baffle;43, elastic cloth;5, support rod;51, sliding rod;52, pressing block;6, sealing ring. SPECIFIC IMPLEMENTATION
[0023] In order to make the technical means, creation features, reach the purpose and easy to understand the effect of the utility model, the utility model is further explained below combining with specific implementation.
[0024] For example, Figs. 1 to 3The utility model discloses a valve core sealing structure of upper expansion valve, including valve body 1, the middle part of valve body 1 is installed with sealing assembly, the bottom of valve body 1 is installed with support 101, the top of valve body 1 is connected with vice flange 102, the middle part of valve body 1 and vice flange 102 is seted up with recess 11, the inside of valve body 1 is clamped with valve seat core 12, one end of valve seat core 12 is equipped with air bag 13, the middle part of valve seat core 12 is seted up with first through -hole 14, one end of first through -hole 14 is communicated with air bag 13, one side of valve body 1 is communicated with gas source interface 15, the middle part of valve body 1 is seted up with second through -hole 16, one end of second through -hole 16 is communicated with gas source interface 15, the other end of second through -hole 16 is communicated with first through -hole 14, first gas source interface 15 is communicated with air pump, and the airflow enters second through -hole 16 from gas source interface 15, passes through first through -hole 14 and reaches air bag 13, and the air fills air bag 13, so that air bag 13 is full, and air bag 13 will adhere to the surface of sealing assembly, and the edge of sealing assembly is resisted, and the sealing effect is generated, by setting gas source interface 15, second through -hole 16 and first through -hole 14, air is filled in air bag 13, and air bag 13 can make crystalline material more easily fall off, to avoid the gap between air bag 13 and sealing assembly.
[0025] As Figs. 1 to 3 The sealing assembly includes a valve shaft 2 fixedly connected to the end of the support 101, a nut sleeve 21 fixedly connected to the outer side of the valve shaft 2, and a valve core 22 provided at the end of the valve shaft 2. The nut sleeve 21 is screw-connected with the valve core 22, and the valve shaft 2, the nut sleeve 21, and the valve core 22 are all slidingly connected with the valve body 1. The nut sleeve 21 is sleeved with the valve core 22 and is fixed on the valve shaft 2 by a screw. The support 101 drives the valve shaft 2 to reciprocate in the valve body 1. When sealing is needed, the air bag 13 is filled to adhere to the valve core 22 to achieve the sealing effect. By sleeving the nut sleeve 21 with the valve core 22 and then fixing them by a screw, the valve core 22 can be conveniently disassembled and assembled, and can be quickly replaced.
[0026] As Figs. 1 to 3 The valve body 1, the vice flange 102, and the recess 11 are all provided with clamping grooves 3 on the surfaces thereof. The air bag 13 is fixedly connected with a plurality of clamping blocks 31 on the surface thereof. When the air bag 13 is filled with air, the clamping blocks 31 are clamped into the clamping grooves 3. The clamping grooves 3 limit the clamping blocks 31 to avoid shaking of the clamping blocks 31, so that the air bag 13 can be fixed and will not fall off the valve seat core 12, and the air bag 13 can be kept stable during work.
[0027] As Figs. 4 to 5As shown, a fixing ring 4 is fixedly connected to the outside of the gas source interface 15. Multiple spring telescopic rods 41 are fixedly connected to one side of the fixing ring 4. A baffle 42 is fixedly connected to one end of each spring telescopic rod 41. An elastic cloth 43 is provided on the outside of the spring telescopic rod 41. One end of the elastic cloth 43 is fixedly connected to the fixing ring 4, and the other end of the elastic cloth 43 is fixedly connected to the baffle 42. When the gas source interface 15 is snapped onto one side of the valve body 1, the baffle 42 is made of a soft material and preferentially contacts the surface of the valve body 1. The surface is fitted together, and the outer side of the air source interface 15 is wrapped. As the air source interface 15 is pushed forward, the fixing ring 4 will also approach the valve body 1. The spring telescopic rod 41 will be under pressure, which will generate a pushing force on the baffle 42, so that the baffle 42 can fit against the surface of the valve body 1, reducing the phenomenon of poor air tightness at the gap between the air source interface 15 and the valve body 1. The elastic cloth 43 wraps the fixing ring 4 and the baffle 42, so that the gas leaking from the gap between the air source interface 15 and the valve body 1 can enter the interior of the elastic cloth 43 and not flow out, thus enhancing the sealing performance.
[0028] like Figs. 4 to 5 As shown, support rods 5 are fixedly connected to both sides of the fixing ring 4. A sliding rod 51 is threadedly connected to the middle of the support rod 5. A pressure block 52 is fixedly connected to the end of the sliding rod 51. By rotating the sliding rod 51, the distance between the pressure block 52 and the valve body 1 is adjusted so that the pressure block 52 presses against the surface of the valve body 1. This can support the air source interface 15 and reduce the phenomenon of the air source interface 15 falling off from the top.
[0029] like Fig. 5 As shown, a sealing ring 6 is provided on one side of the baffle 42. The sealing ring 6 is fixedly connected to the baffle 42. The sealing ring 6 fills the gap between the gas source interface 15 and the valve body 1, further reducing gas leakage and the entry of external airflow.
[0030] Working principle: first gas source interface 15 is communicated with the air pump, the gas flow from gas source interface 15 into the second through hole 16, through the first through hole 14 reaches the air bag 13, the air bag 13 is filled with gas, so that the air bag 13 is full, the air bag 13 will adhere to the surface of the sealing assembly, resist the edge of the sealing assembly, produce sealing effect;By setting the gas source interface 15, the second through hole 16 and the first through hole 14, the air bag 13 can make the crystalline material more easily fall off, avoid the gap between the sealing assembly, nut sleeve 21 and valve core 22 sleeve, fixed on the valve shaft 2 by screw, support 101 drives valve shaft 2 reciprocating motion in valve body 1, when needing to seal, air bag 13 fills and realizes sealing effect by adhering to valve core 22, by setting the nut sleeve 21 and valve core 22 sleeve, then fixed by screw, make the disassembly and installation of valve core 22 more convenient, realize the quick replacement of valve core 22, when the air bag 13 is filled with gas, will push the clamping block 31 to the clamping groove 3, the clamping groove 3 limits the clamping block 31, avoid the clamping block 31 to shake, further can fix the air bag 13 will not fall off from the valve seat core 12, ensure that the air bag 13 remains stable when working, when the gas source interface 15 is clamped on one side of the valve body 1, the baffle 42 is soft, the baffle 42 contacts the surface of the valve body 1 first, and is adhered to the surface of the valve body 1, and is wrapped on the outside of the gas source interface 15, with the advancement of the gas source interface 15, the fixed ring 4 will also approach the valve body 1, the spring telescopic rod 41 will be subjected to pressure, and a pushing force will be generated on the baffle 42, so that the baffle 42 can be adhered to the surface of the valve body 1, reducing the phenomenon that the air tightness of the gap between the gas source interface 15 and the valve body 1 is poor, the elastic cloth 43 wraps the fixed ring 4 and the baffle 42, so that the gas leaked from the gap between the gas source interface 15 and the valve body 1 can enter the elastic cloth 43, and cannot flow out, enhancing the sealing performance, rotating the slide rod 51, adjusting the distance between the pressing block 52 and the valve body 1, so that the pressing block 52 is on the surface of the valve body 1, which can support the gas source interface 15, reducing the phenomenon that the gas source interface 15 falls off from the top, the sealing ring 6 fills the gap between the gas source interface 15 and the valve body 1, further reducing gas leakage and external airflow.
[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A poppet valve spool seal structure comprising a valve body (1); characterized by: The valve body (1) is provided with a sealing assembly in the middle, a support (101) is arranged at the bottom of the valve body (1), a secondary flange (102) is threadedly connected to the top of the valve body (1), a groove (11) is formed in the middle of the valve body (1) and the secondary flange (102), a valve seat core (12) is clamped in the valve body (1), an air bag (13) is arranged at one end of the valve seat core (12), a first through hole (14) is formed in the middle of the valve seat core (12), one end of the first through hole (14) is communicated with the air bag (13), an air source interface (15) is communicated with one side of the valve body (1), a second through hole (16) is formed in the middle of the valve body (1), one end of the second through hole (16) is communicated with the air source interface (15), and the other end of the second through hole (16) is communicated with the first through hole (14).
2. The poppet valve core sealing structure according to claim 1, characterized in that: The sealing assembly comprises a valve shaft (2) fixedly connected to the end of the support (101), a nut sleeve (21) fixedly connected to the outer side of the valve shaft (2), and a valve core (22) arranged at the end of the valve shaft (2), wherein the nut sleeve (21) is screw-connected with the valve core (22), and the valve shaft (2), the nut sleeve (21) and the valve core (22) are all slidingly connected with the valve body (1).
3. The poppet valve core sealing structure according to claim 2, characterized in that: The valve body (1), the secondary flange (102) and the groove (11) are all provided with clamping grooves (3) on the surfaces, and the air bag (13) is fixedly connected with a plurality of clamping blocks (31) on the surface.
4. The poppet valve core sealing structure according to claim 3, characterized in that: The air source interface (15) is fixedly connected with a fixing ring (4) on the outer side, a plurality of spring telescopic rods (41) are fixedly connected to one side of the fixing ring (4), a baffle (42) is fixedly connected to one end of the spring telescopic rod (41), an elastic cloth (43) is arranged on the outer side of the spring telescopic rod (41), one end of the elastic cloth (43) is fixedly connected with the fixing ring (4), and the other end of the elastic cloth (43) is fixedly connected with the baffle (42).
5. The poppet valve core sealing structure according to claim 4, characterized in that: The fixing ring (4) is fixedly connected with a support rod (5) on both sides, a sliding rod (51) is threadedly connected to the middle of the support rod (5), and a pressing block (52) is fixedly connected to the end of the sliding rod (51).
6. The poppet valve core sealing structure according to claim 5, characterized in that: The baffle (42) is provided with a sealing ring (6) on one side, and the sealing ring (6) is fixedly connected with the baffle (42).