Sealing type valve structure

Abstract

The invention discloses a sealing type valve structure which comprises a valve body and a valve cover, a valve element is arranged in the valve body, a valve rod hole is formed in the valve body, a valve rod connected with the valve element is arranged on the valve cover, a circular ring sleeve is fixed to the surface of the valve rod through a screw, and a circular-truncated-cone-shaped elastic membrane is fixed to the lower bottom face of the circular ring sleeve. A convex ring body is fixed to the bottom end of the elastic membrane, an n-shaped clamping groove is formed in the bottom face of the convex ring body, the convex ring body is located in the annular groove, a sealing strip is arranged in the n-shaped clamping groove, at least three balance abutting structures are arranged on the top face of the valve body, each balance abutting structure comprises a plane plate, and a vertical supporting plate is integrally formed at the inner side end of each plane plate. An elastic supporting plate inclining downwards is arranged at the top end of the vertical supporting plate, and an abutting supporting piece inclining upwards is integrally formed at the bottom end of the elastic supporting plate. The valve element is reasonable in structural arrangement, the convex ring body can be arranged in the circular ring groove of the valve body, sealing stability can be achieved, opening and closing operation of the valve element cannot be affected, and the valve element is high in applicability and good in practicability.

Description

Technical Field

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

[0002] With the development of society, valves are widely used and the media they convey are becoming more and more complex. While we require reducing wear, we also have higher requirements for the sealing performance of valves. Poor sealing performance will cause media leakage, resulting in a lot of economic losses, and the volatilized toxic substances may endanger people's lives. The sealing performance of the valve structure in the existing technology is relatively limited, making it difficult to meet market demand. Summary of the invention

[0003] The object of the present invention is to provide a sealing valve structure with reasonable structural arrangement and strong sealing performance.

[0004] The technical solution to achieve the purpose of the present invention is a sealing valve structure, comprising a valve body, a valve cover is fixed on the valve body by a screw, a valve core is arranged in the valve body, a valve stem hole is opened in the valve body, a valve stem connected to the valve core is arranged on the valve cover, a circular ring is fixed on the surface of the valve stem by a screw, and a truncated cone-shaped elastic diaphragm is fixed on the lower bottom surface of the circular ring;

[0005] A circular groove centered on the valve stem is provided on the top surface of the valve body, a convex ring body is fixed at the bottom end of the elastic diaphragm, an n-shaped groove is provided on the bottom surface of the convex ring body, the convex ring body is located in the circular groove and a sealing strip is provided in the n-shaped groove;

[0006] At least three balanced pressure structures are arranged on the top surface of the valve body;

[0007] The balanced pressure structure comprises a plane plate, a vertical support plate is integrally formed at the inner side end of the plane plate, an elastic support plate is inclined downward at the top end of the vertical support plate, and a pressure support piece is integrally formed at the bottom end of the elastic support plate.

[0008] The flat plate is located between the valve body and the valve cover and is fixed by a screw, the connection between the elastic support plate and the pressing support piece is pressed against the top surface of the convex ring body, and the inclined top end of the pressing support piece is in contact with the outer surface of the elastic diaphragm;

[0009] When the valve stem rotates, the convex ring body is driven to rotate synchronously in the circular ring groove through the circular ring sleeve and the elastic diaphragm.

[0010] Further preferably, an annular clamping groove is provided on the edge of the top surface of the valve core, and an annular pressing groove is provided on the inner wall of the valve stem hole;

[0011] An inverted truncated cone-shaped sealing block is also provided, a snap-in ring is integrally formed outwardly on the upper edge of the inverted truncated cone-shaped sealing block, and a sealing gasket is fixed on the bottom surface of the inverted truncated cone-shaped sealing block;

[0012] The sealing block of the inverted truncated cone is clamped into the annular pressing groove through a clamping ring sheet, and the bottom end is clamped into the annular clamping groove through a sealing gasket.

[0013] It is further preferred that a sealing filler is provided between the top surface of the inverted truncated cone-shaped sealing block and the elastic diaphragm.

[0014] It is further preferred that: a driving motor is fixed on the valve cover, and a driving gear is fixed on the main shaft of the driving motor;

[0015] A transmission gear meshing with the driving gear is fixed on the top end of the valve stem, and a start-stop button connected with the driving motor is fixed on the valve cover.

[0016] It is further preferred that: the rounded sealing block and the balanced pressing structure are both made of stainless steel.

[0017] Further preferably, a sealing rubber surface layer is wrapped on the surface of the valve core.

[0018] The present invention has positive effects: the structure of the present invention is reasonably arranged, a circular ring sleeve is fixed on the valve stem by screws and an elastic diaphragm is arranged on the circular ring sleeve to cooperate with a convex ring body, which can be arranged in the circular ring groove of the valve body through the convex ring body to facilitate sealing stability, and at the same time, when the valve stem is rotated, the convex ring body can be driven to rotate in the valve body, thereby not affecting the switching operation of the valve core, and the use is stable and reliable, and the applicability and practicality are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a specific structural diagram of the annular sleeve and the elastic diaphragm in the present invention;

[0022] Figure 3 It is a specific structural schematic diagram of the balanced pressure structure in the present invention.

[0023] Figure numerals: valve body 1, screw 2, valve cover 3, valve core 4, valve stem hole 5, valve stem 6, screw 7, annular sleeve 8, elastic diaphragm 9, annular groove 10, convex ring body 11, n-shaped groove 12, sealing strip 13, balanced pressure structure 14, flat plate 141, vertical support plate 142, elastic support plate 143, pressure support piece 144, annular groove 15, annular pressure groove 16, inverted truncated cone-shaped sealing block 17, snap-in ring piece 18, sealing gasket 19, sealing packing 20, drive motor 21, drive gear 22, transmission gear 23, start-stop button 24. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] Example

[0026] like Figures 1 to 3 As shown, a sealing valve structure includes a valve body 1, a valve cover 3 is fixed on the valve body by a screw 2, and a valve core 4 is arranged in the valve body. In this embodiment, the valve body is a conventional structure of the prior art. In order to improve the sealing performance of the valve core, a sealing rubber surface layer is wrapped on the surface of the valve core. The sealing rubber surface layer makes the valve core and the inner cavity of the valve body sealed.

[0027] A valve stem hole 5 is provided on the valve body, a valve stem 6 connected to the valve core is provided on the valve cover, a circular ring sleeve 8 is fixed on the surface of the valve stem by screws 7, a truncated cone-shaped elastic diaphragm 9 is fixed on the lower bottom surface of the circular ring sleeve, a circular ring groove 10 centered on the valve stem is provided on the top surface of the valve body, a convex ring body 11 is fixed on the bottom end of the elastic diaphragm, an n-shaped groove 12 is provided on the bottom surface of the convex ring body, the convex ring body is located in the circular ring groove and a sealing strip 13 is provided in the n-shaped groove, at least three balanced pressure structures 14 are provided on the top surface of the valve body, the balanced pressure structure 14 includes a plane plate 141, a vertical support plate 142 is integrally formed at the inner side end of the plane plate, an elastic support plate 143 is inclined downward at the top end of the vertical support plate, and an upward inclined pressure support piece 144 is integrally formed at the bottom end of the elastic support plate;

[0028] In this embodiment, during assembly, the flat plate is located between the valve body and the valve cover and is fixed by a screw, the connection between the elastic support plate and the pressure support piece is pressed against the top surface of the convex ring body and the inclined top end of the pressure support piece is in contact with the outer surface of the elastic diaphragm, and during operation, when the valve stem rotates, the convex ring body is driven to rotate synchronously in the circular groove through the circular ring sleeve and the elastic diaphragm.

[0029] An annular groove 15 is provided on the top edge of the valve core, an annular pressing groove 16 is provided on the inner wall of the valve stem hole, and an inverted truncated cone-shaped sealing block 17 is also provided. In this embodiment, the inverted truncated cone-shaped sealing block and the balanced pressing structure are both made of stainless steel. The strength, stability and reliability of the use can be ensured, and deformation is not likely to occur, which is conducive to improving the service life. At the same time, a sealing filler 20 is provided between the top surface of the inverted truncated cone-shaped sealing block and the elastic diaphragm.

[0030] A snap-in ring sheet 18 is integrally formed outwardly on the upper edge of the inverted truncated cone-shaped sealing block, and a sealing gasket 19 is fixed on the bottom surface of the inverted truncated cone-shaped sealing block. After installation, the inverted truncated cone-shaped sealing block is snapped into the annular pressing groove through the snap-in ring sheet and the bottom end is snapped into the annular groove through the sealing gasket. This can not only ensure the normal rotation of the snap-in ring sheet, but also ensure the sealing performance of the connection.

[0031] At the same time, in order to ensure the reliability and effectiveness of the driving operation and improve the convenience of operation during actual use, a driving motor 21 is fixed on the valve cover, a driving gear 22 is fixed on the main shaft of the driving motor, a transmission gear 23 meshing with the driving gear is fixed on the top of the valve stem, and a start-stop button 24 connected to the driving motor is fixed on the valve cover. When in use, the driving motor drives the driving gear to move the valve stem to achieve the effect of automatic control.

[0032] The structure of the present invention is reasonably set up. A circular ring sleeve is fixed on the valve stem by screws and an elastic diaphragm is arranged on the circular ring sleeve to cooperate with a convex ring body. The convex ring body can be arranged in the circular ring groove of the valve body to facilitate the realization of sealing stability. At the same time, when the valve stem is rotated, the convex ring body can be driven to rotate in the valve body, thereby not affecting the switching operation of the valve core. The use is stable and reliable, and the applicability and practicality are good.

[0033] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

[0035] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A sealing valve structure, comprising a valve body, a valve cover fixed to the valve body by a screw, a valve core arranged in the valve body, a valve stem hole opened in the valve body, and a valve stem connected to the valve core arranged on the valve cover, characterized in that: A circular sleeve is fixed on the surface of the valve stem by screws, and a truncated cone-shaped elastic diaphragm is fixed on the lower bottom surface of the circular sleeve; A circular groove centered on the valve stem is provided on the top surface of the valve body, a convex ring body is fixed at the bottom end of the elastic diaphragm, an n-shaped groove is provided on the bottom surface of the convex ring body, the convex ring body is located in the circular groove and a sealing strip is provided in the n-shaped groove; At least three balanced pressure structures are arranged on the top surface of the valve body; The balanced pressure structure comprises a plane plate, a vertical support plate is integrally formed at the inner side end of the plane plate, an elastic support plate is inclined downward at the top end of the vertical support plate, and a pressure support piece is integrally formed at the bottom end of the elastic support plate. The flat plate is located between the valve body and the valve cover and is fixed by a screw, the connection between the elastic support plate and the pressing support piece is pressed against the top surface of the convex ring body, and the inclined top end of the pressing support piece is in contact with the outer surface of the elastic diaphragm; When the valve stem rotates, the convex ring body is driven to rotate synchronously in the circular ring groove through the circular ring sleeve and the elastic diaphragm.

2. The sealing valve structure according to claim 1, characterized in that: An annular clamping groove is provided on the edge of the top surface of the valve core, and an annular pressing groove is provided on the inner wall of the valve stem hole; An inverted truncated cone-shaped sealing block is also provided, a snap-in ring is integrally formed outwardly on the upper edge of the inverted truncated cone-shaped sealing block, and a sealing gasket is fixed on the bottom surface of the inverted truncated cone-shaped sealing block; The sealing block of the inverted truncated cone is clamped into the annular pressing groove through a clamping ring sheet, and the bottom end is clamped into the annular clamping groove through a sealing gasket.

3. The sealing valve structure according to claim 2, characterized in that: A sealing filler is arranged between the top surface of the inverted truncated cone-shaped sealing block and the elastic diaphragm.

4. The sealing valve structure according to claim 3, characterized in that: A driving motor is fixed on the valve cover, and a driving gear is fixed on the main shaft of the driving motor; A transmission gear meshing with the driving gear is fixed on the top end of the valve stem, and a start-stop button connected with the driving motor is fixed on the valve cover.

5. The sealing valve structure according to claim 4, characterized in that: The rounded sealing block and the balanced pressing structure are both made of stainless steel.

6. The sealing valve structure according to claim 5, characterized in that: The surface of the valve core is wrapped with a sealing rubber surface layer.

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