A vector seal also valve

Abstract

The application discloses a vector sealing also valve, which comprises a valve body, a valve plate and a valve shaft, the valve plate is rotatably connected to the valve body through the valve shaft fixedly connected with the valve plate, the axial half inner cavity of the valve body is arranged as a hemispherical cavity, the other half inner cavity is a cylindrical cavity, the cylindrical cavity is embedded with a vector sealing ring, the inner surface of the vector sealing ring and the hemispherical cavity form a spherical cross-section cavity, and the radial outer surface of the valve plate is consistent with the spherical cross-section cavity. The valve body inner cavity of the application is divided into two halves in the axial direction, and is arranged as a two-half structure (one half of the inner surface of the vector sealing ring is used), so that the cost is greatly reduced, the vector sealing ring is more convenient to process, and the sealing adjustment between the spherical cavity and the radial surface of the valve plate is also facilitated. The also valve only relates to the main components of the valve body, the valve shaft, the valve plate and the vector sealing ring, so that the also valve structure is simplified, the production is simpler, and the also valve is more convenient to assemble and disassemble.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of valves, and particularly relates to a vector sealing also valve. BACKGROUND

[0002] At present, there are various types of valves used at home and abroad, most of which are butterfly valves, ball valves and gate valves. Most of these types of valves are bulky, heavy, have long installation sizes, poor sealing effect, high opening and closing torque requirements, large power required for opening and closing using electric or pneumatic actuators, and short service life. They also conflict with the current valve well, chamber and other facility specifications and standards in the use environment. A large-diameter valve is often installed in a small valve well or chamber, or the valve is installed first and then the well or chamber is built. This highlights the contradiction in later installation, replacement, disassembly, maintenance, repair and use. If a local valve in the pipe network system needs to be replaced or repaired, it needs to be opened and closed from the dry pipe control valve or the total valve to achieve the replacement operation. Point breakage and point repair (or replacement) cannot be achieved, resulting in a large loss of human, material and medium resources, and causing the dry pipe or other system to be out of flow or paralyzed.

[0003] Chinese Patent Application (Application No. 201610012625.9) discloses an also valve, which comprises a valve body, a valve shaft and a valve plate. The valve plate is connected to the valve body through the valve shaft. The surface of the valve plate is provided with a nest. The surface of the nest is provided with a spherical surface consistent with the inner cavity of the valve body. This structure needs to fasten the nest to the valve plate, requires a large number of screws for fastening, has a complex structure, high cost and high manufacturing difficulty.

[0004] Chinese Patent Application (Application No. 201710509089.8) discloses an also valve, which adopts a thin-wall nest embedded in the inner cavity of the valve body to realize sealing cooperation with the valve plate. The thin-wall nest has high manufacturing difficulty, difficult-to-control manufacturing precision and high manufacturing cost. SUMMARY

[0005] The present application aims to solve the technical problem of providing a vector sealing also valve to solve the problems in the prior art.

[0006] The technical scheme adopted by the present application is as follows: a vector sealing also valve, comprising a valve body, a valve plate and a valve shaft. The valve plate is rotatably connected to the valve body through the valve shaft fixedly connected thereto. The axial half inner cavity of the valve body is provided as a hemispherical cavity, and the other half inner cavity is a cylindrical cavity. A vector sealing ring is embedded in the cylindrical cavity. The inner surface of the vector sealing ring and the hemispherical cavity of the valve body form a spherical cross-section cavity. The radial outer surface of the valve plate is consistent with the spherical cross-section cavity.

[0007] Preferably, the vector sealing ring and the valve body are in transition or interference fit.

[0008] Preferably, the other half of the valve body inner cavity is a stepped hole structure, the outer end of the vector sealing ring is provided with a flange plate, and the vector sealing ring is embedded in the stepped hole structure and then the flange plate is fastened on the valve body by screws.

[0009] Preferably, the inner end of the vector sealing ring and the inner end of the stepped hole structure keep a gap, and the gap is not greater than 1 mm.

[0010] Preferably, an annular packing ring is installed between the inner end of the vector sealing ring and the inner end of the stepped hole structure of the valve body, and the inner side of the packing ring is higher than the surface of the spherical cross-section cavity.

[0011] Preferably, the inner end of the vector sealing ring is a small inner and large outer conical surface structure, the inner end of the hemispherical cavity of the valve body is provided with a conical surface structure two symmetrical to the conical surface structure one, and the packing ring is extruded between the conical surface structure one and the conical surface structure two.

[0012] Preferably, the diameter of the valve body inner cavity is greater than 0.025%-8% of the valve body diameter.

[0013] Preferably, the vector seal valve further comprises an adjustment support pin, which is arranged on the opposite side of the valve shaft, the inner end of which is a ball head supporting the valve plate, and the outer end is connected to the valve body in an axially movable manner through threads, and the ball head supporting part is a spherical groove.

[0014] Preferably, the valve shaft sealing ring is arranged at the connection between the valve shaft and the valve body.

[0015] During assembly, the valve plate is placed in the hemispherical cavity in the valve body to ensure that the valve shaft hole on the valve plate is opposite to the valve shaft hole on the valve body, the inner end of the valve shaft is provided with a hexagonal head, the valve shaft hole on the valve plate is a hexagonal hole matched with the hexagonal head, the valve shaft is inserted into the valve shaft hole on the valve plate through the valve shaft hole on the valve body, thereby connecting the valve plate to the valve shaft, and the adjustment support pin is screwed into the valve body until the upper end of the adjustment support pin abuts against the spherical groove on the valve plate, the vector sealing ring is embedded in the valve body and fixed, and the installation of the valve is completed.

[0016] The beneficial effects of the present application are as follows compared with the prior art:

[0017] (1) the valve body lumen of the spherical cross-section cavity, the valve body lumen is divided axially, and is provided as a two-half structure (one half of the vector sealing ring inner surface acts as), the vector sealing ring acts as a half of the spherical cavity, so that the spherical cross-section cavity is machined, thereby reducing the machining difficulty of the inner spherical surface, greatly reducing the machining cost, the vector sealing ring is also more convenient to process, the vector sealing ring is axially pressed in, and the radial gap adjustment between the entire spherical cross-section cavity and the spherical cross-section of the valve plate is also convenient, so that the sealing between the two is better, the valve only involves the valve body, the valve shaft, the valve plate and the vector sealing ring main component, the manufacturing requirement is simple, and the valve also has the characteristics of more convenient assembly and disassembly;

[0018] (2) the interference fit mode can realize the sealing and connection reliability between the valve body and the vector sealing ring, and the transition fit is convenient for installation, and can be used in cooperation with the sealing ring to realize sealing;

[0019] (3) the stepped hole structure is convenient for embedding the vector sealing ring of the flange plate structure into the stepped hole structure, and further improves the connection reliability of the vector sealing ring;

[0020] (4) the gap is set, the position adjustment between the inner spherical cavity surface of the vector sealing ring and the outer spherical surface of the valve plate is realized, so that the sealing is better;

[0021] (5) the packing ring can be elastically contacted on the outer surface of the valve plate, and the hard sealing of the spherical cross-section cavity is realized, so that the flexible and hard combined sealing of the valve is realized, the machining requirement of the spherical cross-section cavity and the spherical surface of the valve plate is reduced, the manufacturing cost is reduced, and the taper structure plays the packing ring anti-falling limiting and fastening effect and the vector sealing ring installation guiding effect;

[0022] (6) the adjusting support pin plays a supporting rotation role, the ball head and the spherical groove form point contact, the directivity is better, and the friction is smaller;

[0023] (7) the vector sealing ring is fixed by interference or transition fit, the connection is reliable, the pressure connection mode is adopted, the installation is convenient, the outer diameter of the vector sealing ring is greater than the inner hole of the pipeline, the anti-falling effect can be achieved, and the use safety is further improved;

[0024] (8) the valve structure valve body is thinned, the flanges on both sides of the pipeline are butted on both sides of the valve body, and the installation structure is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a front view structure schematic diagram of the present application;

[0026] Figure 2 is a rear view structure schematic diagram of the present application;

[0027] Figure 3 is Figure 1Fig. 11 is a schematic view of a cross-sectional structure (hard sealing) of the present application;

[0028] Figure 4 Fig. 10 is a schematic view of a cross-sectional structure (hard sealing) of the present application; Figure 1 Fig. 12 is a schematic view of a top structure (flexible sealing) of the present application;

[0029] Figure 5 Fig. 13 is a schematic view of a bottom structure (flexible sealing) of the present application;

[0030] Figure 6 Fig. 14 is a schematic view of a valve body structure (flexible sealing) of the present application;

[0031] Figure 7 Fig. 15 is a schematic view of a vector sealing ring structure (flexible sealing) of the present application;

[0032] Figure 8 Fig. 15 is a schematic view of a vector sealing ring structure (flexible sealing) of the present application;

[0033] Figure 9 Fig. 15 is a schematic view of a vector sealing ring structure (flexible sealing) of the present application;

[0034] Figure 10 Fig. 10 is a schematic view of a cross-sectional structure (hard sealing) of the present application; Figure 1 Fig. 12 is a schematic view of a top structure (flexible sealing) of the present application;

[0035] Figure 11 Fig. 10 is a schematic view of a cross-sectional structure (hard sealing) of the present application; Figure 1 Fig. 12 is a schematic view of a top structure (flexible sealing) of the present application;

[0036] Fig. 13 is a schematic view of a bottom structure (flexible sealing) of the present application;

[0037] Fig. 13 is a schematic view of a bottom structure (flexible sealing) of the present application;

[0038] Fig. 14 is a schematic view of a valve body structure (flexible sealing) of the present application;

[0039] Fig. 15 is a schematic view of a vector sealing ring structure (flexible sealing) of the present application. DETAILED DESCRIPTION

[0040] The present application will be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] In the present application, the vector sealing means that the sealing performance is achieved by the physical properties and forms of the material to naturally change the variables between the surfaces (contact).

[0042] Example 1: as Figures 1-9As shown, a kind of hard sealing vector seal valve, including valve body 1, valve plate 2 and valve shaft 3, valve plate 2 is rotatably connected to valve body 1 by the valve shaft 3 fixedly connected therewith, the axial half inner cavity of valve body 1 is provided as hemispherical cavity, the other half inner cavity is cylindrical cavity, cylindrical cavity is embedded with vector seal ring 4, the inner surface of vector seal ring 4 and the hemispherical cavity of valve body 1 form spherical section cavity, the radial outer side surface of valve plate 2 is consistent with spherical section cavity.

[0043] Preferably, the above-mentioned vector seal ring 4 and valve body 1 adopt transition or interference fit.

[0044] Preferably, the other half inner cavity of the above-mentioned valve body 1 is step hole structure, the outer end of vector seal ring 4 is provided with flange plate 6, and vector seal ring 4 is embedded in step hole structure and then flange plate 6 is fastened on valve body 1 by screw 5.

[0045] Preferably, the inner end of the above-mentioned vector seal ring 4 keeps a gap with the inner end of the step hole structure, and the gap is not more than 1 mm, so as to realize the position adjustment between the inner spherical cavity surface of vector seal ring and the outer spherical surface of valve plate, and make the sealing better.

[0046] Preferably, the inner cavity diameter of the above-mentioned valve body 1 is 0.025%-8% larger than the caliber of valve body 1, which can bear the axial force of valve plate, meet the requirement of valve body thinning, and make the weight lighter.

[0047] Preferably, the above-mentioned vector seal valve further includes adjusting support pin 8, which is arranged on the opposite side of valve shaft 3, the inner end of which is a ball head supporting valve plate 2, and the outer end is axially movably connected to valve body 1 through threads, the ball head supporting valve plate 2 is a spherical groove, the adjusting support pin plays a supporting rotating role, the ball head and the spherical groove form point contact, which is more directional and has smaller friction.

[0048] Preferably, the connection between the above-mentioned valve shaft 3 and valve body 1 is provided with elastic valve shaft sealing ring 9, and the connection between valve shaft 3 and valve body 1 is provided with a gap, the gap is 0.15-0.5 mm, and the gap between the outer side surface of valve plate 2 and the spherical section cavity in valve body 1 is 0.005-0.1 mm, the load of the medium on the valve plate is applied to the valve body by the gap between valve shaft and valve body and the gap between valve plate and the inner spherical section cavity of valve body, so that the valve shaft is almost not subjected to shear force, only subjected to torsional moment when the valve is opened, thus the shaft diameter of valve shaft can be simplified, the structure of valve body is greatly reduced, the length becomes thinner, the weight is greatly reduced, the service life is greatly prolonged, the valve plate can be greatly thinned, the medium passes through the section with large ratio and small resistance, the installation size is short, the hard sealing of spherical section cavity has better sealing effect, and the problems of existing technology, such as heavy structure, short service life, long installation size, small medium passing section ratio and large resistance, are effectively solved.

[0049] The recessed conical surface parts arranged on the back water side and the water inlet side of the valve plate can increase the flow cross section ratio, reduce the medium resistance, reduce the weight of the valve plate, increase the load of the valve plate, and have a longer service life.

[0050] The valve body 1 is provided with a mounting flange 10 in the circumferential direction, and the mounting flange is provided with a plurality of through holes 11. When the pipelines are installed on both sides of the valve body, the flange plates at the end portions of the pipelines on both sides are butted to both sides of the mounting flange, and the mounting flange connection part is further provided with a water stop pad.

[0051] Embodiment 2: as shown in Figures 1-2 and 10-15, a combined sealing vector seal valve includes a valve body 1, a valve plate 2 and a valve shaft 3, the valve plate 2 is rotatably connected to the valve body 1 through the valve shaft 3 fixedly connected thereto, the axial half inner cavity of the valve body 1 is provided as a hemispherical cavity, and the other half inner cavity is a cylindrical cavity, the cylindrical cavity is embedded with a vector seal ring 4, the inner surface of the vector seal ring 4 and the hemispherical cavity of the valve body 1 form a spherical cross-section cavity, and the radial outer surface of the valve plate 2 is consistent with the spherical cross-section cavity.

[0052] Preferably, the other half inner cavity of the valve body 1 is a stepped hole structure, the outer end of the vector seal ring 4 is provided with a flange plate 6, and the vector seal ring 4 is embedded in the stepped hole structure, and the flange plate 6 is fastened on the valve body 1 by using a screw 5.

[0053] Preferably, the inner end of the vector seal ring 4 and the inner end of the stepped hole structure maintain a gap, and the gap is not greater than 1 mm, which facilitates the position adjustment between the inner spherical cavity surface of the vector seal ring and the outer spherical surface of the valve plate, and makes the sealing better.

[0054] Preferably, an annular packing ring 7 is installed between the inner end of the vector seal ring 4 and the inner end of the hemispherical cavity of the valve body 1, the inner side of the packing ring 7 is higher than the surface of the spherical cross-section cavity, the packing ring is elastically contacted on the outer surface of the valve plate, cooperates with the hard sealing of the spherical cross-section cavity, realizes the combined sealing of the flexible and hard vector seal valve, reduces the processing requirements of the spherical cross-section cavity and the spherical surface of the valve plate, and reduces the manufacturing cost, the inner end of the vector seal ring 4 is a conical surface structure one with a small inner diameter and a large outer diameter, the inner end of the hemispherical cavity of the valve body 1 is provided with a conical surface structure two symmetrical to the conical surface structure one, and the packing ring 7 is extruded between the conical surface structure one and the conical surface structure two, the conical surface structure plays a role of preventing the packing ring from being disengaged, limiting and fastening, and the vector seal ring 4 plays a role of installation and guiding, as shown in Figures 10-11 When the packing ring is installed, the valve shaft and the valve plate are first installed on the valve body, then the packing ring (a circular cross-section annular elastic sealing ring) is embedded into the conical surface structure at the inner end of the hemispherical cavity, and is surrounded by the valve shaft or the supporting pin, as shown in Figure 12 and 13 Then, the vector seal ring is embedded into the set position, so as to fasten the packing ring on the spherical cross-section cavity.

[0055] Preferably, the diameter of the inner cavity of the valve body 1 is greater than 0.025%-8% of the diameter of the valve body 1, which can bear the axial force of the valve plate and meet the requirements of thinning the valve body, and the weight is lighter.

[0056] Preferably, the vector seal of the above-mentioned combined seal also includes an adjustment support pin 8 arranged on the opposite side of the valve shaft 3, the inner end of the adjustment support pin 8 is a ball head supporting the valve plate 2, and the outer end is axially movably connected to the valve body 1 through threads. The ball head supporting the valve plate 2 is a spherical groove, the adjustment support pin plays a supporting rotation role, the ball head and the spherical groove form a point contact, the directivity is better, and the friction is smaller.

[0057] Preferably, the connection between the valve shaft 3 and the valve body 1 is provided with a flexible valve shaft sealing ring 9, and the connection between the valve shaft and the valve body is provided with a gap of 0.15-0.5mm, and the gap between the outer side of the valve plate and the inner spherical section cavity of the valve body is 0.005-0.1mm. Through the gap between the valve shaft and the valve body and the gap between the valve plate and the inner spherical section cavity of the valve body, the force of the medium on the valve plate is applied to the valve body, the valve shaft is almost not subjected to shear force, only subjected to torsional force when the valve is opened, thereby the shaft diameter of the valve shaft can be simplified, the structure of the valve body is greatly reduced, the length becomes thinner, the weight is greatly reduced, the service life is greatly prolonged, the valve plate can be greatly thinned, the medium passing section ratio is large, the resistance is small, the installation size is short, the spherical section cavity is hard sealed, and the elastic sealing of the packing ring is combined, the sealing effect is better, and the problems of large structure, short service life, long installation size, small medium passing section ratio, and large resistance caused by large stress on the valve shaft in the prior art are solved.

[0058] The recessed conical surface parts are arranged on the back water side and the water inlet side of the valve plate, which can increase the flow section ratio, reduce the medium resistance, reduce the weight of the valve plate, increase the load of the valve plate, and have a longer service life.

[0059] The valve body 1 is provided with a mounting flange 10 in the circumferential direction, the mounting flange is provided with a plurality of through holes 11, when the pipelines are installed on both sides of the valve body, the flange plates at the ends of the pipelines on both sides are butted to the both sides of the mounting flange, and the mounting flange connection is further provided with a water stop pad.

[0060] The opening and closing operation of the also valve in the two embodiments: the also valve is twisted to the valve plate through the valve shaft, the valve plate is rotated by 90 degrees in the spherical cavity of the valve body to realize opening and closing, and the medium is closed by the interaction between the also valve plate and the spherical surface of the valve body 1. The valve plate and the spherical section cavity are hard sealed or combined sealed after the packing ring is installed to stop the medium.

[0061] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application, therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vector sealing valve, comprising a valve body (1), a valve plate (2), and a valve shaft (3), wherein the valve plate (2) is rotatably connected to the valve body (1) via the valve shaft (3) fixedly connected thereto, characterized in that: The axial half of the inner cavity of the valve body (1) is set as a hemispherical cavity, and the other half of the inner cavity is a cylindrical cavity. The cylindrical cavity is embedded with a vector sealing ring (4). The inner surface of the vector sealing ring (4) and the hemispherical cavity of the valve body (1) form a spherical cross-section cavity. The radial outer surface of the valve plate (2) is consistent with the spherical cross-section cavity. The vector sealing ring (4) and the valve body (1) are fitted with an interference fit. The other half of the inner cavity of the valve body (1) is a stepped hole structure. A flange (6) is set at the outer end of the vector sealing ring (4). After the vector sealing ring (4) is embedded in the stepped hole structure, the flange (6) is fastened to the valve body (1) with screws (5). The inner end of the vector sealing ring (4) and the inner end of the stepped hole structure maintain a gap of no more than 1 mm.

2. The vector sealing valve according to claim 1, characterized in that: An annular packing ring (7) is installed between the inner end of the vector sealing ring (4) and the inner end of the hemispherical cavity of the valve body (1). The inner height of the packing ring (7) is higher than the surface of the spherical cavity.

3. A vector sealing valve according to claim 2, characterized in that: The inner end of the vector sealing ring (4) is a conical structure one with a smaller inner end and a larger outer end. The inner end of the hemispherical cavity of the valve body (1) is provided with a conical structure two that is symmetrical to the conical structure one. The packing ring (7) is squeezed between the conical structure one and the conical structure two.

4. A vector sealing valve according to claim 1, characterized in that: The inner diameter of the valve body (1) is 0.025%-8% larger than the orifice diameter of the valve body (1).

5. A vector sealing valve according to claim 1, characterized in that: It also includes an adjustment support pin (8), which is set on the opposite side of the valve shaft (3). Its inner end is a ball head supporting the valve plate (2), and its outer end is axially movable to the valve body (1) through a thread. The valve plate (2) at the ball head support is a spherical groove.

6. A vector sealing valve according to claim 1, characterized in that: A valve shaft sealing ring (9) is provided at the connection between the valve shaft (3) and the valve body (1).

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