Sealing compression ring and pressure reducing device

Abstract

The utility model provides a sealing compression ring and decompressor, the sealing compression ring comprises a compression ring main body, the center of the compression ring main body is provided with a wrench position, the top of the compression ring main body extends upwards to form at least two groups of stop blocks, and one side of each stop block far away from the compression ring main body forms a protective surface. A circulation groove is formed between every two adjacent stop blocks, and transition areas are arranged between the stop blocks and the wrench positions and between the circulation grooves and the wrench positions. Deformation generated when the sealing compression ring is installed through a wrench position can be prevented from being transmitted to other surfaces, possibly making contact with the diaphragm, of the compression ring body, and the diaphragm can be prevented from being damaged when the sealing compression ring makes contact with the diaphragm by forming a protection face on the stop block.

Description

Technical Field

[0001] This specification relates to the technical field of pressure reducing devices, and in particular to a sealing pressure ring and a pressure reducing device. Background Art

[0002] High-cleanliness pressure reducing devices generally use stainless steel diaphragms to bear the spring force of the loading spring and isolate the highly corrosive fluid medium in the valve. When the pressure reducing device is working, the diaphragm will constantly contact and squeeze the sealing pressure ring. The existing sealing pressure rings are mostly hexagonal grooved structures, which can easily produce sharp edges during processing and cause damage to the diaphragm. In addition, when the outer hexagon of the sealing pressure ring is tightened to seal, the outer hexagon is prone to deformation and protrusion, which can also cause damage to the diaphragm when in contact with the diaphragm. Summary of the Invention

[0003] In view of this, the utility model provides a sealing pressure ring and a pressure reducing device. By opening a wrench position at the center of the pressure ring body, it is possible to prevent the outer periphery of the pressure ring body from causing damage to the diaphragm. A transition zone is provided between the stop block, the flow groove and the wrench position, which can prevent the deformation generated when the sealing pressure ring is installed through the wrench position from being transmitted to other surfaces of the pressure ring body that may come into contact with the diaphragm. By forming a protective surface on the stop block, it is possible to prevent the sealing pressure ring from causing damage to the diaphragm when it contacts the diaphragm.

[0004] The utility model provides the following technical solutions: a sealing pressure ring, comprising a pressure ring body, a wrench position is opened at the center of the pressure ring body, the top of the pressure ring body extends upward to form at least two groups of stop blocks, the stop blocks form a protective surface on the side away from the pressure ring body, and flow grooves are formed between adjacent stop blocks, and transition zones are provided between the stop blocks and the flow grooves and the wrench position.

[0005] Preferably, the transition zone includes a conical surface or an arc surface.

[0006] Preferably, the flow groove comprises a rectangular groove or a semicircular groove.

[0007] Preferably, the wrench position comprises a polygonal groove.

[0008] A pressure reducing device comprises a valve body, a force-receiving mechanism, a valve core, a seal, a diaphragm, a force-applying mechanism and a sealing pressure ring as described in any one of the above items, wherein the valve body is provided with an inlet end and an outlet end, and an installation cavity for installing the valve core is formed in the valve body, the force-receiving mechanism is arranged below the valve core, the valve core passes through the seal, the sealing pressure ring is arranged between the seal and the diaphragm, and the force-applying mechanism is arranged above the diaphragm.

[0009] Preferably, the valve core includes a positioning portion, a sealing portion and a push rod, the positioning portion cooperates with the force-bearing mechanism, the sealing portion cooperates with the sealing component, and the push rod passes through the sealing component to contact the diaphragm.

[0010] Preferably, the force-bearing mechanism includes a lifting spring, a positioning hole is provided on the positioning portion, and the lifting spring is at least partially inserted into the positioning hole.

[0011] Preferably, the outer peripheral surface of the sealing portion is a conical surface or a spherical surface.

[0012] Preferably, the force-applying mechanism includes a loading spring and a pressure-adjusting handle, the loading spring is arranged above the diaphragm, the pressure-adjusting handle cooperates with the valve body and can move relative to the valve body, the pressure-adjusting handle is in contact with the loading spring, and the pressure-adjusting handle can adjust the compression amount of the loading spring, thereby adjusting the loading force of the loading spring on the diaphragm.

[0013] Preferably, the force applying mechanism further comprises a spring support seat, a first side of the spring support seat is in contact with the loading spring, and a second side of the spring support seat is in contact with the diaphragm.

[0014] Compared with the prior art, the beneficial effects achieved by at least one of the above technical solutions adopted by the present invention include at least:

[0015] By providing a wrench position at the center of the pressure ring body, it is possible to avoid damage to the diaphragm caused by the outer periphery of the pressure ring body. A transition zone is provided between the stop block, the flow groove and the wrench position, which can avoid the deformation generated when the sealing pressure ring is installed through the wrench position being transmitted to other surfaces of the pressure ring body that may come into contact with the diaphragm. By forming a protective surface on the stop block, it is possible to prevent the sealing pressure ring from damaging the diaphragm when it contacts the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 It is a structural schematic diagram of the sealing pressure ring provided by this application;

[0018] Figure 2 It is a structural schematic diagram of the pressure reducing device provided by this application;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the valve body of the pressure reducing device provided by this application;

[0020] Figure 4 is a cross-sectional view of the valve body of the pressure reducing device provided by the present application;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the valve core of the pressure reducing device provided by this application;

[0022] Figure 6 It is a cross-sectional view of the valve core of the pressure reducing device provided in this application.

[0023] In the figure, 1. pressure ring body; 2. wrench position; 3. stop block; 4. protective surface; 5. flow groove; 6. transition zone; 7. valve body; 71. installation cavity; 72. inlet end; 73. outlet end; 8. lifting spring; 9. sealing member; 10. sealing pressure ring; 11. valve core; 111. positioning part; 112. sealing part; 113. push rod; 114. positioning hole; 12. diaphragm; 13. spring support seat; 14. loading spring; 15. pressure regulating handle. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0029] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 2 As shown, a sealing pressure ring 10 includes a pressure ring body 1, a wrench position 2 is opened at the center of the pressure ring body 1, the top of the pressure ring body 1 extends upward to form at least two groups of stop blocks 3, the stop blocks 3 form a protective surface 4 on the side away from the pressure ring body 1, and flow grooves 5 are formed between adjacent stop blocks 3, and a transition zone 6 is provided between the stop blocks 3 and the flow grooves 5 and the wrench position 2.

[0031] By opening a wrench position 2 at the center of the pressure ring body 1, its function is to tighten the sealing pressure ring 10 when installing. The wrench position 2 is opened at the center of the pressure ring body 1 and will not affect the periphery of the pressure ring body 1, which can prevent the periphery of the pressure ring body 1 from causing damage to the diaphragm. By extending upward to form a stop block 3 at the top of the pressure ring body 1, a flow groove 5 is formed between the stop blocks 3, which is used to facilitate the circulation of the medium when the diaphragm 12 is fitted with its upper surface. A transition zone 6 is provided between the stop block 3, the flow groove 5 and the wrench position 2, which can prevent the deformation generated when the sealing pressure ring 10 is installed through the wrench position 2 from being transmitted to other surfaces of the pressure ring body 1 that may come into contact with the diaphragm 12. By forming a protective surface 4 on the stop block 3, all edges of the top of the sealing pressure ring 10 that may come into contact with the diaphragm 12 are all set as protective surfaces 4, and rounded corners are set at the protective surface 4, which can prevent the sealing pressure ring 10 from causing damage to the diaphragm 12 when it contacts the diaphragm 12.

[0032] It should be noted that four groups of stop blocks 3 are provided, and the four groups of stop blocks 3 are evenly distributed on the top of the pressure ring body 1 , and four groups of flow grooves 5 are formed between the four groups of stop blocks 3 .

[0033] like Figure 1 As shown, in some embodiments, the transition zone 6 includes a conical surface or an arc surface. The structure of the transition zone 6 can be a conical surface, an arc surface, or other surfaces. In this embodiment, a conical surface transition is preferred.

[0034] like Figure 1As shown, in some embodiments, the circulation groove 5 includes a rectangular groove or a semicircular groove. The circulation groove 5 structure can be a rectangular groove, a semicircular groove, or a groove of other shapes. In this embodiment, a rectangular groove is preferred.

[0035] like Figure 1 As shown, in some embodiments, the wrench bit 2 includes a polygonal groove. The structure of the wrench bit 2 can be hexagonal, square, or other shapes. In this embodiment, hexagonal is preferred.

[0036] like Figure 1-Figure 4 As shown, based on the same inventive concept, the utility model provides a pressure reducing device, including a valve body 7, a force-bearing mechanism, a valve core 11, a seal 9, a diaphragm 12, a force-applying mechanism and a sealing pressure ring 10 as described in any one of the above items, the valve body 7 is provided with an inlet end 72 and an outlet end 73, and a mounting cavity 71 for mounting the valve core 11 is formed in the valve body 7, the force-bearing mechanism is arranged below the valve core 11, the valve core 11 passes through the seal 9, the sealing pressure ring 10 is arranged between the seal 9 and the diaphragm 12, and the force-applying mechanism is arranged above the diaphragm 12.

[0037] The force-bearing mechanism is installed at the bottom of the installation cavity 71, and plays the role of resetting the valve core 11. The valve core 11 passes through the seal 9, and the seal 9 is at the bottom of the sealing pressure ring 10. The sealing pressure ring 10 presses the seal 9. The lower part of the seal 9 contacts the valve core 11 to produce a sealing effect. The top of the valve core 11 contacts the diaphragm 12. The diaphragm 12 can isolate the pressure medium from the external environment and transmit the loading force to the valve core 11. Different loading forces are applied to the diaphragm 12 through the force-applying mechanism, which can be used to balance the force of the outlet pressure on the diaphragm 12.

[0038] It should be noted that the sealing member 9 is made of a soft sealing material, preferably PCTFE; the diaphragm 12 is a stainless steel diaphragm, and its material is stainless steel, preferably 316L.

[0039] like Figure 5-Figure 6 As shown, in some embodiments, the valve core 11 includes a positioning portion 111, a sealing portion 112 and a push rod 113. The positioning portion 111 cooperates with the force-bearing mechanism, the sealing portion 112 cooperates with the sealing member 9, and the push rod 113 passes through the sealing member 9 and contacts the diaphragm 12. The positioning portion 111, the sealing portion 112 and the push rod 113 are an integrally formed structure. The positioning portion 111 cooperates with the force-bearing mechanism to ensure the coordination effect between the force-bearing mechanism and the valve core 11. The sealing portion 112 cooperates with the sealing member 9 to produce a sealing effect. The push rod 113 passes through the sealing member 9 and the sealing pressure ring 10 and contacts the bottom of the diaphragm 12, so that the force received by the diaphragm 12 will be transmitted to the valve core 11.

[0040] like Figure 2 and Figure 5-Figure 6 As shown, in some embodiments, the force-bearing mechanism includes a lifting spring 8, and a positioning hole 114 is provided on the positioning portion 111. The lifting spring 8 is at least partially inserted into the positioning hole 114. By adopting the lifting spring 8 as the force-bearing mechanism, the lifting spring 8 can apply a force opposite to the loading spring 14 to the valve core 11, thereby realizing the up and down movement of the valve core 11 inside the valve body 7. By providing the positioning hole 114 at the bottom of the positioning portion 111, one end of the lifting spring 8 contacts the inner bottom wall of the mounting cavity 71, and the other end of the lifting spring 8 is inserted into the positioning hole 114, thereby ensuring the cooperation effect between the lifting spring 8 and the positioning hole 114.

[0041] like Figure 5-Figure 6 As shown, in some embodiments, the outer peripheral surface of the sealing portion 112 is a conical surface or a spherical surface. The function of the sealing portion 112 is to cooperate with the sealing member 9 to produce a sealing effect. Its structure can be a conical surface, a spherical surface or other surface that can produce a seal with the sealing member 9.

[0042] like Figure 2 As shown, in some embodiments, the force-applying mechanism includes a loading spring 14 and a pressure-adjusting handle 15. The loading spring 14 is arranged above the diaphragm 12. The pressure-adjusting handle 15 cooperates with the valve body 7 and can move relative to the valve body 7. The pressure-adjusting handle 15 is in contact with the loading spring 14. The pressure-adjusting handle 15 can adjust the compression amount of the loading spring 14, thereby adjusting the loading force of the loading spring 14 on the diaphragm 12. By rotating the pressure-adjusting handle 15, the pressure-adjusting handle 15 can move along the valve body 7, and the compression amount of the loading spring 14 can be adjusted, thereby adjusting the loading force on the diaphragm 12.

[0043] like Figure 2 As shown, in some embodiments, the force-applying mechanism further includes a spring support seat 13, a first side of the spring support seat 13 being in contact with the loading spring 14, and a second side of the spring support seat 13 being in contact with the diaphragm 12. By arranging the spring support seat 13 between the loading spring 14 and the diaphragm 12, the bottom of the spring support seat 13 is in contact with the diaphragm 12, which can avoid direct contact between the diaphragm 12 and the loading spring 14, thereby ensuring that the diaphragm 12 is subjected to uniform force.

[0044] See also Figures 1-6 , the specific working process of the pressure reducing device will be briefly described below:

[0045] The pressurized medium enters the lower part of the valve body 7 through the inlet end 72 of the valve body 7, and the valve core 11 generates a sealing effect with the seal 9 under the action of the lifting spring 8 and the medium pressure, and the pressure medium is sealed at the inlet end 72 of the valve body 7; by adjusting the pressure regulating handle 15, the loading spring 14 is compressed, and the loading spring 14 deforms to generate elastic force, and the elastic force is transmitted to the diaphragm 12 through the spring support seat 13, and the diaphragm 12 deforms downward to press the valve core 11, so that the sealing part 112 of the valve core 11 is separated from the seal 9, and the pressurized medium enters the upper cavity of the valve body 7 through the center hole of the sealing pressure ring 10, and then flows out from the upper cavity through the outlet end 73 of the valve body 7; when the pressure medium contacts the diaphragm 12, it generates an upward pressure on the diaphragm 12, and when the pressure is greater than the loading force provided by the loading spring 14, it pushes the spring support seat. 13 moves upward with the loading spring 14. At this time, the valve core 11 also moves upward under the action of the lifting spring 8. The flow channel leading to the upper chamber produces a throttling effect, limiting the output pressure of the pressure medium. When the pressure of the medium in the upper chamber is less than the loading force of the spring, the diaphragm 12 will float downward again to push the valve core 11 to open, increasing the flow of medium to the upper chamber; when the pressure of the medium in the upper chamber and the elastic force of the loading spring 14 achieve a movement balance, a stable pressure medium will be output from the outlet end 73 to complete the function of the pressure reducing device; in the process of the diaphragm 12 moving up and down, the upper surface of the sealing pressure ring 10 plays a role in limiting the downward movement of the diaphragm 12. By improving the structure of the sealing pressure ring 10, the diaphragm 12 is prevented from being squeezed and damaged during the contact and limiting process with the sealing pressure ring 10, thereby playing a role in limiting protection for the diaphragm 12.

[0046] The same or similar parts between the various embodiments in this specification can be referred to in conjunction with each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0047] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A sealing pressure ring, characterized in that: It includes a pressure ring body, a wrench position is opened at the center of the pressure ring body, the top of the pressure ring body extends upward to form at least two groups of stop blocks, the stop blocks form a protective surface on the side away from the pressure ring body, and flow grooves are formed between adjacent stop blocks, and transition zones are provided between the stop blocks and the flow grooves and the wrench position.

2. The sealing pressure ring according to claim 1, characterized in that: The transition zone includes a conical surface or an arc surface.

3. The sealing pressure ring according to claim 1, characterized in that: The flow groove includes a rectangular groove or a semicircular groove.

4. The sealing pressure ring according to claim 1, characterized in that: The wrench bit includes a polygonal groove.

5. A pressure reducing device, characterized in that: It includes a valve body, a force-bearing mechanism, a valve core, a seal, a diaphragm, a force-applying mechanism and a sealing pressure ring as described in any one of claims 1 to 4, the valve body is provided with an inlet end and an outlet end, the valve body is formed with an installation cavity for installing the valve core, the force-bearing mechanism is arranged below the valve core, the valve core passes through the seal, the sealing pressure ring is arranged between the seal and the diaphragm, and the force-applying mechanism is arranged above the diaphragm.

6. The decompression device according to claim 5, characterized in that The valve core includes a positioning portion, a sealing portion and a push rod. The positioning portion cooperates with the force-bearing mechanism, the sealing portion cooperates with the sealing component, and the push rod passes through the sealing component to contact the diaphragm.

7. The decompression device according to claim 6, characterized in that The force-bearing mechanism includes a lifting spring. A positioning hole is provided on the positioning portion, and the lifting spring is at least partially inserted into the positioning hole.

8. The decompression device according to claim 6, characterized in that The outer peripheral surface of the sealing portion is a conical surface or a spherical surface.

9. The decompression device according to claim 5, characterized in that: The force-applying mechanism includes a loading spring and a pressure-adjusting handle. The loading spring is arranged above the diaphragm. The pressure-adjusting handle cooperates with the valve body and can move relative to the valve body. The pressure-adjusting handle is in contact with the loading spring. The pressure-adjusting handle can adjust the compression amount of the loading spring, thereby adjusting the loading force of the loading spring on the diaphragm.

10. The decompression device according to claim 9, characterized in that The force applying mechanism further includes a spring support seat, a first side of the spring support seat is in contact with the loading spring, and a second side of the spring support seat is in contact with the diaphragm.

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