Pressure-adjustable open type check valve

Abstract

The utility model discloses an opening type check valve capable of regulating and controlling pressure, which relates to the technical field of valves and comprises a valve body, a mounting seat is fixedly mounted on the top surface of the valve body, a valve cover is detachably mounted on the top surface of the mounting seat, and fixing components are detachably sleeved on the surfaces of the valve cover and the mounting seat. The valve cover is installed and fixed on the installation base through the fixing assembly, when the valve cover needs to be detached, the positioning buckles are taken out of the corresponding positioning pieces, the first positioning sleeve and the second positioning sleeve of the fixing assembly are taken down from the surfaces of the installation base and the valve cover, and then the detaching work of the valve cover can be completed; the valve cover can be conveniently disassembled and assembled on the mounting base, the pressure control assembly mounted in the valve body is overhauled and replaced, and after one end of a pipeline is fixedly connected with two corresponding flanges of the valve body through a bolt matched with a nut, the sealing performance and firmness of the two flanges after connection are improved through the sealing assembly.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an adjustable pressure-opening check valve. Background Technology

[0002] The adjustable pressure opening check valve is a specially designed check valve that can dynamically adjust the opening pressure of the check valve under different operating conditions. This type of valve uses an elastic element between the valve disc body and the support to dynamically adjust the opening pressure of the check valve by utilizing the elastic properties of the elastic element, thereby better adapting to changes in fluid pressure and flow rate under different operating conditions.

[0003] However, the valve cover of most existing pressure-controlled check valves is fixed on the mounting base on the valve body by bolts. When it is necessary to remove the valve cover to repair or replace the pressure control components installed inside the valve body, the valve cover is inconvenient to disassemble and assemble, which affects the maintenance progress of the check valve. Secondly, when the check valve is connected to the corresponding pipeline, it is mostly completed by flange with bolts and nuts to fix the pipeline to the check valve, which has poor sealing performance. Utility Model Content

[0004] To address the problem that the valve cover of most existing pressure-controlled check valves is fixed to the mounting base on the valve body with bolts, which makes valve cover disassembly and assembly inconvenient and affects the maintenance progress of the check valve, the purpose of this utility model is to provide an adjustable pressure-opening check valve.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: an adjustable pressure opening check valve, including a valve body, a mounting seat fixedly installed on the top surface of the valve body, a valve cover detachably installed on the top surface of the mounting seat, and a fixing component detachably sleeved on the surfaces of the valve cover and the mounting seat, the fixing component including a first positioning sleeve and a second positioning sleeve, the first positioning sleeve and the second positioning sleeve being sleeved opposite to each other on the surfaces of the valve cover and the mounting seat;

[0006] Two positioning elements are symmetrically installed on one side of the second positioning sleeve. The positioning elements are slidably inserted into one side of the first positioning sleeve. Positioning buckles are threadedly engaged on both sides of the bottom surface of the first positioning sleeve. The positioning buckles pass through the first positioning sleeve and are threadedly engaged in the positioning elements. Positioning rings are fixedly installed on one side of both the first and second positioning sleeves. The valve cover has slots on both sides of its surface, and the positioning rings are slidably engaged in the slots.

[0007] Preferably, pipes can be detachably installed on both sides of the valve body, and flanges are fixedly installed at both ends of the valve body and one end of the pipe. Sealing components are detachably installed on the surfaces of the two flanges adjacent to the valve body and the pipe. The sealing components include sealing sleeves, and there are two sealing sleeves. The two sealing sleeves are fitted onto the surfaces of the two flanges opposite each other. Fixing members are fixedly installed at both ends of the surfaces of the two sealing sleeves, and the internal threads of the two fixing members on the same side of the two sealing sleeves are provided with fixing buckles.

[0008] Preferably, two positioning rings are symmetrically installed on the bottom surface of the valve cover. The two positioning rings are slidably inserted into the top surface of the mounting base. Two positioning grooves are symmetrically opened on the top surface of the mounting base. The two positioning rings are slidably inserted into the two positioning grooves respectively. Two slots are symmetrically opened on one side of the first positioning sleeve. The two positioning elements are slidably inserted into the two slots respectively.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, the valve cover is installed and fixed on the mounting base by a fixing component. When the valve cover needs to be disassembled, the positioning buckle is removed from the corresponding positioning part, and the first positioning sleeve and the second positioning sleeve of the fixing component are removed from the mounting base and the surface of the valve cover, so as to complete the disassembly of the valve cover. With the cooperation of the fixing component, it is convenient to disassemble and install the valve cover on the mounting base, and to inspect and replace the pressure control component installed inside the valve body.

[0011] 2. In this utility model, after the connection and fixation of one end of the pipe and the corresponding two flanges of the valve body are completed by bolts and nuts, the two sealing sleeves of the sealing assembly are put on the two flange surfaces. After the sleeves are put on, the sealing sleeves are installed and fixed on the two flange surfaces by the cooperation of the fastener and the fastener. The sealing assembly increases the sealing performance and firmness of the connection between the two flanges. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model.

[0015] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0016] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0017] In the diagram: 1. Valve body; 11. Mounting seat; 111. Positioning groove; 12. Valve cover; 121. Slot; 122. Positioning ring; 2. Fixing assembly; 21. First positioning sleeve; 211. Positioning buckle; 212. Slot; 22. Second positioning sleeve; 221. Positioning element; 23. Positioning ring; 24. Handle; 3. Flange; 31. Positioning hole; 4. Pipe; 5. Sealing assembly; 51. Sealing sleeve; 52. Fixing element; 53. Fixing buckle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Figure 1-4 As shown, this utility model provides an adjustable pressure opening check valve, including a valve body 1. A mounting base 11 is fixedly installed on the top surface of the valve body 1. A valve cover 12 is detachably installed on the top surface of the mounting base 11. A fixing component 2 is detachably sleeved on the surfaces of the valve cover 12 and the mounting base 11. The fixing component 2 includes a first positioning sleeve 21 and a second positioning sleeve 22. The first positioning sleeve 21 and the second positioning sleeve 22 are sleeved on the surfaces of the valve cover 12 and the mounting base 11 respectively. A positioning element 221 is symmetrically installed on one side of the second positioning sleeve 22. There are two positioning elements 221. The positioning element 221 is slidably inserted into one side of the first positioning sleeve 21. Positioning buckles 211 are threaded on both sides of the bottom surface of the first positioning sleeve 21. The positioning buckles 211 pass through the first positioning sleeve 21 and are threaded into the positioning element 221. A positioning ring 23 is fixedly installed on one side of both the first positioning sleeve 21 and the second positioning sleeve 22. A slot 121 is opened on both sides of the surface of the valve cover 12. The positioning ring 23 is slidably locked in the slot 121.

[0020] The valve cover 12 is installed and fixed on the mounting base 11 by fixing component 2. The valve cover 12 is positioned on the mounting base 11 by two positioning rings 122 installed on the bottom surface of the valve cover 12. After positioning, the positioning rings 23 installed in the first positioning sleeve 21 and the second positioning sleeve 22 cooperate with the slots 121 opened on both sides of the surface of the valve cover 12, thus engaging the positioning rings 23 in the corresponding slots 121. This completes the installation and positioning of the first positioning sleeve 21 and the second positioning sleeve 22 on the surfaces of the valve cover 12 and the mounting base 11. After positioning, the valve cover 12 is then positioned... With the cooperation of the buckle 211 and the positioning element 221, the fixing component 2 is installed and fixed on the surface of the mounting base 11 and the valve cover 12, thereby completing the installation and fixing of the valve cover 12 on the top surface of the mounting base 11. When it is necessary to disassemble the valve cover 12, the positioning buckle 211 is removed from the corresponding positioning element 221, and the first positioning sleeve 21 and the second positioning sleeve 22 of the fixing component 2 are removed from the surface of the mounting base 11 and the valve cover 12, thus completing the disassembly of the valve cover 12. With the cooperation of the fixing component 2, it is convenient to disassemble and install the valve cover 12 on the mounting base 11, and to inspect and replace the pressure control component installed inside the valve body 1.

[0021] Both sides of the valve body 1 can be detachably installed with pipes 4. Flanges 3 are fixedly installed at both ends of the valve body 1 and one end of the pipe 4. Sealing components 5 are detachably installed on the surfaces of the two adjacent flanges 3 of the valve body 1 and the pipe 4. The sealing components 5 include sealing sleeves 51, and there are two sealing sleeves 51. The two sealing sleeves 51 are fitted onto the surfaces of the two flanges 3. Fixing members 52 are fixedly installed at both ends of the surfaces of the two sealing sleeves 51. The two fixing members 52 on the same side of the two sealing sleeves 51 are threaded with fixing buckles 53. The two pipes 4 and the valve body 1 are connected and fixed through the flanges 3. After the connection and fixation of one end of the pipe 4 and the corresponding two flanges 3 of the valve body 1 are completed by bolts and nuts, the two sealing sleeves 51 of the sealing components 5 are fitted onto the surfaces of the two flanges 3. After the fitting is completed, the sealing sleeves 51 are installed and fixed on the surfaces of the two flanges 3 by the cooperation of the fixing members 52 and the fixing buckles 53. The sealing components 5 increase the sealing and firmness of the connection between the two flanges 3.

[0022] Two positioning rings 122 are symmetrically installed on the bottom surface of the valve cover 12. The two positioning rings 122 are slidably inserted into the top surface of the mounting base 11. The valve cover 12 is installed and positioned on the mounting base 11 by the two positioning rings 122 installed on the bottom surface of the valve cover 12, ensuring that the positioning ring 23 is later engaged in the slot 121, and completing the installation of the first positioning sleeve 21 and the second positioning sleeve 22 on the surface of the mounting base 11 and the valve cover 12.

[0023] The top surface of the mounting base 11 is symmetrically provided with positioning grooves 111. There are two positioning grooves 111. Two positioning rings 122 are slidably inserted into the two positioning grooves 111 respectively. The two positioning grooves 111 on the top surface of the mounting base 11 are used to complete the insertion and positioning of the corresponding positioning rings 122, thereby completing the installation and positioning of the valve cover 12 on the mounting base 11.

[0024] The first positioning sleeve 21 has two slots 212 symmetrically opened on one side. The two positioning parts 221 are slidably inserted into the two slots 212 respectively. The corresponding positioning parts 221 are inserted and positioned by the two slots 212 opened on one side of the first positioning sleeve 21.

[0025] A handle 24 is fixedly installed on one side of the surface of the first positioning sleeve 21 and the second positioning sleeve 22. The handle 24 installed on one side of the surface of the first positioning sleeve 21 and the second positioning sleeve 22 facilitates the disassembly and assembly of the first positioning sleeve 21 and the second positioning sleeve 22. The flange 3 has evenly distributed positioning holes 31 on its surface. The corresponding bolts are inserted through the evenly distributed positioning holes 31 on the surface of the flange 3. The connection and fixation between two adjacent flanges 3 are completed by cooperating with the nut, thereby completing the connection and fixation between the pipeline 4 and the valve body 1.

[0026] Working principle: The valve cover 12 is fixed on the mounting base 11 by the fixing component 2. The valve cover 12 is positioned on the mounting base 11 by the two positioning rings 122 installed on the bottom surface of the valve cover 12. After positioning, the positioning rings 23 installed in the first positioning sleeve 21 and the second positioning sleeve 22 respectively cooperate with the slots 121 opened on both sides of the surface of the valve cover 12 to engage the positioning rings 23 installed in the first positioning sleeve 21 and the second positioning sleeve 22 into the corresponding slots 121, thus completing the installation of the first positioning sleeve 21 and the second positioning sleeve 22. After the valve cover 12 and the mounting base 11 are installed and positioned, the fixing component 2 is installed and fixed on the surface of the mounting base 11 and the valve cover 12 with the cooperation of the positioning buckle 211 and the positioning part 221, thereby completing the installation and fixing of the valve cover 12 on the top surface of the mounting base 11. When it is necessary to disassemble the valve cover 12, the positioning buckle 211 is taken out from the corresponding positioning part 221, and the first positioning sleeve 21 and the second positioning sleeve 22 of the fixing component 2 are removed from the surface of the mounting base 11 and the valve cover 12, thus completing the disassembly of the valve cover 12.

[0027] After the connection and fixation of one end of the pipe 4 and the corresponding two flanges 3 of the valve body 1 are completed by bolts and nuts, the two sealing sleeves 51 of the sealing assembly 5 are put on the surfaces of the two flanges 3. After the sleeves are put on, the sealing sleeves 51 are installed and fixed on the surfaces of the two flanges 3 by the cooperation of the fastener 52 and the fastener 53. The sealing assembly 5 increases the sealing and firmness of the connection between the two flanges 3.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pressure-regulated swing-to-open check valve comprising a valve body (1), characterized in that: The top surface of the valve body (1) is fixedly provided with a mounting seat (11), the top surface of the mounting seat (11) is detachably provided with a valve cover (12), the surfaces of the valve cover (12) and the mounting seat (11) are detachably provided with a fixing assembly (2), the fixing assembly (2) comprises a first positioning sleeve (21) and a second positioning sleeve (22), and the first positioning sleeve (21) and the second positioning sleeve (22) are oppositely provided on the surfaces of the valve cover (12) and the mounting seat (11). The first positioning sleeve (21) and the second positioning sleeve (22) are oppositely provided on the surfaces of the valve cover (12) and the mounting seat (11).

2. A pressure-regulated swing-to-open check valve as defined in claim 1, wherein The two sides of the valve body (1) are detachably provided with pipelines (4), the two ends of the valve body (1) and one end of the pipeline (4) are fixedly provided with flanges (3), the surfaces of the two flanges (3) adjacent to the valve body (1) and the pipeline (4) are detachably provided with a sealing assembly (5), the sealing assembly (5) comprises a sealing sleeve (51), the number of the sealing sleeve (51) is two, the two sealing sleeves (51) are oppositely provided on the surfaces of the two flanges (3), and the surfaces of the two sealing sleeves (51) are fixedly provided with fixing members (52) at two ends.

3. A pressure-regulated swing-to-open check valve as defined in claim 1, wherein The bottom surface of the valve cover (12) is symmetrically provided with positioning rings (122), and the number of the positioning rings (122) is two.

4. A pressure-regulated swing-to-open check valve as defined in claim 3, wherein The top surface of the mounting seat (11) is symmetrically provided with positioning grooves (111), and the number of the positioning grooves (111) is two.

5. A pressure-regulated swing-to-open check valve as defined in claim 1, wherein The one side of the first positioning sleeve (21) is symmetrically provided with insertion grooves (212), and the number of the insertion grooves (212) is two.

6. A pressure-regulated, crack open check valve as defined in claim 1, wherein, The surfaces of the first positioning sleeve (21) and the second positioning sleeve (22) are fixedly provided with handles (24) at one side.

7. A pressure-regulated swing-to-open check valve as defined in claim 2, wherein The surface of the flange (3) is provided with uniformly distributed positioning holes (31).

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