Ball valve

Abstract

The utility model discloses a ball valve which comprises a ball valve body, a valve rod assembly and a cap. The ball valve body comprises a valve body and a valve element ball, the valve body comprises a first circulation opening and a second circulation opening, and the valve element ball is rotatably installed in the valve body and used for controlling circulation / stopping between the first circulation opening and the second circulation opening. The valve rod assembly is provided with a connecting end and a driving end, the driving end is located outside the valve body, and the connecting end is rotatably arranged in the valve body in a penetrating mode and connected with the valve element ball. The cap is detachably connected to the valve body, and a through hole is formed in the cap; when the cap is connected with the valve body, the driving end of the valve rod assembly penetrates through the through hole and extends towards the outside of the valve body. By means of the structure, a worker can directly act on the portion, extending out of the cover cap, of the valve rod to achieve valve opening and closing operation of the ball valve, in the process, the cover cap does not need to be overall detached, on one hand, the worker can conveniently conduct valve opening and closing operation on the ball valve, and on the other hand, the cover cap can be prevented from being lost.

Description

Technical Field

[0001] This utility model belongs to the technical field of refrigeration systems, and in particular relates to a ball valve. Background Technology

[0002] Ball valves are commonly used in refrigeration systems, such as air conditioning systems, to control the flow of refrigerant.

[0003] Existing ball valves include a valve seat, a valve stem, and a valve cap. The valve stem extends outward through the valve seat, and the valve cap is detachably mounted on the valve seat to completely cover the portion of the valve stem that extends beyond the valve seat. Currently, operating a ball valve requires first removing the valve cap from the valve seat, and then controlling the opening or closing of the ball valve by rotating the valve stem. Because the entire valve cap needs to be removed from the valve seat during actual operation, the process is complex and prone to loss. Utility Model Content

[0004] In view of this, it is necessary to provide a ball valve for solving the above-mentioned technical problems.

[0005] A ball valve, comprising:

[0006] The ball valve body includes a valve body and a valve core ball. The valve body includes a first flow port and a second flow port. The valve core ball is rotatably mounted in the valve body and is used to control the flow / stop between the first flow port and the second flow port.

[0007] A valve stem assembly has a connecting end and a driving end, the driving end being located outside the valve body, and the connecting end being rotatably inserted through the valve body and connected to the valve core ball;

[0008] A cap is detachably connected to the valve body, and the cap is provided with a through hole;

[0009] When the cap is connected to the valve body, the drive end of the valve stem assembly passes through the through hole and extends outward toward the valve body.

[0010] Understandably, since the drive end on the valve stem assembly is located outside the cap, the operator can directly apply the drive end that extends from the cap on the valve stem assembly to perform the valve opening and closing operation on the ball valve. In this process, it is not necessary to remove the entire cap. This not only facilitates the operator's operation of the ball valve but also avoids the loss of the cap.

[0011] In one embodiment, the valve stem assembly includes a valve stem and a valve cap, the connecting end is disposed on the valve stem, both the valve stem and the valve cap are provided through the through hole, and the driving end is disposed on the valve cap.

[0012] In one of the embodiments, the ball valve further comprises a valve seat, the cap is threadedly connected with the valve seat, and the cap and the valve seat enclose a limiting chamber along the length direction of the valve stem; the valve cap is at least partially arranged in the limiting chamber and is circumferentially limited by the valve stem, and the valve cap can be locked or unlocked on the valve seat under the control of the cap.

[0013] It can be understood that the cap and the valve seat are threadedly connected, and the limiting chamber formed by the cap and the valve seat is used to limit the valve cap, so that the worker can turn the cap to realize the opening and closing operation of the ball valve, which further facilitates the opening and closing operation of the ball valve and prevents the loss of the valve cap.

[0014] In one of the embodiments, the cap has a pressing portion, and the limiting chamber is formed by the pressing portion and the valve seat.

[0015] The valve cap has a valve cap edge, and the valve cap edge is arranged in the limiting chamber and abuts against the pressing portion.

[0016] In one of the embodiments, the ball valve further comprises a gasket, and the gasket is sleeved on the valve stem and abuts against the valve seat and the valve cap edge, respectively.

[0017] It can be understood that the gasket is used to realize the force transmission between the valve cap edge and the valve seat, which improves the stability of the pressing portion when locking the valve cap edge on the valve seat.

[0018] In one of the embodiments, the valve cap further has a screwing body, and the screwing body is rotatably arranged in the cap.

[0019] The screwing body is sleeved on the valve stem and is circumferentially limited by the valve stem.

[0020] It can be understood that the worker can realize the opening and closing operation of the ball valve by manually operating the screwing body, which facilitates the opening and closing operation of the ball valve.

[0021] In one of the embodiments, the valve seat has an abutting limiting block.

[0022] Along the circumferential direction of the valve stem, the abutting limiting block can abut against the valve stem to limit the rotation angle of the valve stem relative to the valve seat when the valve stem rotates.

[0023] Along the length direction of the valve stem, the abutting limiting block abuts against the valve stem to limit the valve stem in the valve seat.

[0024] It can be understood that, by the structure of the abutting limiting block, on the one hand, the abutting between the abutting limiting block and the valve stem can be used to limit the maximum rotation angle of the valve stem, to realize the operation prompt of the on-off valve of the ball valve, so as to facilitate the on-off valve operation of the ball valve by the staff; on the other hand, the abutting limiting block can also be used to limit the valve stem to the valve seat, to realize the assembly limiting between the valve stem and the valve seat, so as to facilitate the assembly of the valve stem and the valve seat on the valve body.

[0025] In one of the embodiments, the ball valve body further comprises two connecting pipes, and the materials of the two connecting pipes are configured as stainless steel; the two connecting pipes are arranged on both sides of the valve body and connected with the valve body respectively;

[0026] One of the connecting pipes is communicated with the first flow-through port, and the other connecting pipe is communicated with the second flow-through port.

[0027] It can be understood that, by using the material characteristics of stainless steel, compared with brass pipes, the connecting pipes of the ball valve can reduce the weight on the one hand, so as to facilitate the staff to take and transport the ball valve, and on the other hand, the production and preparation of the connecting pipes are facilitated, and the heat loss of the refrigerant during the operation of the ball valve is reduced.

[0028] In one of the embodiments, the ball valve body further comprises a gas nozzle, which is installed on one of the connecting pipes and communicated with the connecting pipe;

[0029] The material of the gas nozzle is configured as stainless steel.

[0030] It can be understood that, by using the material characteristics of stainless steel, compared with the gas nozzle made of brass, the weight of the gas nozzle can be reduced, and the heat loss of the refrigerant during the injection of the gas nozzle is reduced.

[0031] In one of the embodiments, the ball valve further comprises a mounting plate, which is fixedly connected to the valve body, and the ball valve can be installed and fixed through the mounting plate.

[0032] It can be understood that the mounting plate is used to realize the installation and fixation of the ball valve in the air conditioning system, so that the ball valve can be assembled and applied in the air conditioning system.

[0033] Due to the application of the above technical solutions, the present application has the following advantages compared with the prior art:

[0034] The ball valve claimed in the present application is characterized in that the driving end on the valve stem assembly is arranged outside the cap, so that the staff can directly act on the driving end of the valve stem assembly extending out of the cap to realize the on-off valve operation of the ball valve. In this process, the cap does not need to be removed as a whole, which on the one hand can facilitate the on-off valve operation of the ball valve by the staff, and on the other hand can also avoid the loss of the cap. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a ball valve provided in one embodiment of this application.

[0037] Figure 2 This is a partial structural exploded view of the ball valve provided in an embodiment of this application.

[0038] Figure 3 This is a cross-sectional view of a ball valve provided in an embodiment of this application.

[0039] Figure 4 for Figure 3 Enlarged view of the middle P section.

[0040] Reference numerals: 100, ball valve; 10, ball valve body; 11, valve body; 111, first flow port; 112, second flow port; 12, valve core ball; 13, connecting pipe; 131, connecting copper sleeve; 14, air nozzle; 20, valve seat; 21, abutting limit block; 30, valve stem assembly; 301, connecting end; 302, driving end; 31, valve stem; 32, valve cap; 321, valve cap edge; 322, screwing body; 40, cap; 410, through hole; 401, limit chamber; 41, pressing part; 50, gasket; 60, mounting plate; 101, sealing ring. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "and" and "or" as used herein include any and all combinations of one or more of the associated listed items.

[0044] The ball valve 100 that this application seeks to protect specifically refers to a manual ball valve used in an air conditioning system.

[0045] like Figures 1 to 4 As shown, a ball valve 100 provided in one embodiment of this application includes a ball valve body 10, a valve stem assembly 30, and a cap 40. The ball valve body 10 includes a valve body 11 and a valve core ball 12. The valve body 11 includes a first flow port 111 and a second flow port 112. The valve core ball 12 is rotatably installed inside the valve body 11 and is used to control the flow / stop between the first flow port 111 and the second flow port 112. The valve stem assembly 30 has a connecting end 301 and a driving end 302. The driving end 302 is located outside the valve body 11, and the connecting end 301 is rotatably inserted inside the valve body 11 and connected to the valve core ball 12. The cap 40 is detachably connected to the valve body 11 and has a through hole 410. When the cap 40 is connected to the valve body 11, the driving end 302 of the valve stem assembly 30 passes through the through hole 410 and extends outward toward the valve body 11.

[0046] As can be seen from the above, the ball valve 100 of this application has a drive end 302 on the valve stem assembly 30 located outside the cap 40, which allows the operator to directly apply the drive end 302 on the valve stem assembly 30 extending out of the cap 40 to perform the valve opening and closing operation on the ball valve 100. In this process, it is not necessary to remove the entire cap 40. This not only facilitates the operator's valve opening and closing operation on the ball valve 100, but also avoids the loss of the cap 40.

[0047] like Figures 1 to 3 As shown, in one embodiment, the ball valve body 10 further includes two connecting pipes 13, which are arranged on both sides of the valve body 11 and connected to and communicate with the valve body 11 respectively; one connecting pipe 13 is connected to the first flow port 111, and the other connecting pipe 13 is connected to the second flow port 112. This allows external refrigerant to be introduced into the valve body 11 through one of the connecting pipes 13, pass through the valve core ball 12, and then be discharged outward through the other connecting pipe 13. During this process, the rotation of the valve core ball 12 within the valve body 11 can be used to control the connection or disconnection between the two connecting pipes 13.

[0048] In this embodiment, the material of the two connecting pipes 13 is configured as stainless steel, so that the connecting pipes 13 of the ball valve 100 can reduce weight and overall gravity compared with brass pipes, so as to facilitate the staff to pick up and transport the ball valve 100, and also facilitate the production of the connecting pipes 13 and reduce the heat loss of the refrigerant during the operation of the ball valve 100. Here, the connecting pipes 13 can be prepared by cutting stainless steel pipes, so that the carbon emissions generated during the whole life cycle of the connecting pipes 13 are about 32% of the brass ball valve, which is more energy-saving. It should be noted that the heat loss of the ball valve 100 of the present application can be reduced by 1 / 7 compared with the existing brass ball valve.

[0049] As shown in Figures 1 to 3 , in an embodiment, the two connecting pipes 13 are respectively connected and communicated with a connecting copper sleeve 131 at one end away from the valve body 11, so that the material properties of the connecting copper sleeve 131 can facilitate the assembly and connection between the ball valve 100 and the heat exchange pipe (not shown) in the air conditioning system. Here, the connecting copper sleeve 131 can be sleeved on the connecting pipe 13 and connected with the connecting pipe 13 by welding.

[0050] As shown in Figures 1 to 3 , in an embodiment, the ball valve body 10 further includes an air nozzle 14, which is installed on one of the connecting pipes 13 and communicated with the connecting pipe 13; so that the ball valve 100 can inject refrigerant into the ball valve 100 through the air nozzle 14 after maintenance in the air conditioning system.

[0051] In this embodiment, the material of the air nozzle 14 is configured as stainless steel, so that the material properties of the stainless steel can reduce the weight of the air nozzle 14 and reduce the heat loss of the air nozzle 14 when injecting refrigerant compared with the air nozzle made of brass.

[0052] As shown in Figures 1 to 4 , in an embodiment, the ball valve 100 further includes a valve seat 20, and the cap 40 is connected with the valve seat 20 in a threaded manner.

[0053] As shown in Figures 2 to 4 , in an embodiment, the valve stem assembly 30 includes a valve stem 31 and a valve cap 32, a connecting end 301 is provided on the valve stem 31, the valve stem 31 and the valve cap 32 are both provided with a through hole 410, and a driving end 302 is provided on the valve cap 32; the valve stem 31 can be rotatably arranged in the valve seat 20. Here, the part of the valve stem 31 located in the valve seat 20 is sleeved with two sealing rings 101, so that the valve stem 31 can be assembled and sealed with the valve seat 20 through the two sealing rings 101. It should be noted that the above-mentioned "the valve stem 31 can be rotatably arranged in the valve seat 20" specifically means that the valve stem 31 penetrates the valve seat 20 and can rotate relative to the valve seat 20.

[0054] like Figure 2 As shown, in one embodiment, the valve seat 20 has an abutment limiting block 21; along the circumferential direction of the valve stem 31, the abutment limiting block 21 can abut against the valve stem 31 to limit the rotation angle of the valve stem 31 relative to the valve seat 20. That is, the ball valve 100 can limit the maximum rotation angle of the valve stem 31 by utilizing the abutment between the abutment limiting block 21 and the valve stem 31, thus providing an operational indication for opening and closing the ball valve 100, facilitating the operator's operation. Here, two abutment limiting blocks 21 are configured, symmetrically arranged with respect to the centerline of the valve seat 20, enabling the ball valve 100 to limit rotation during opening and closing.

[0055] like Figure 2 As shown, in one embodiment, along the length direction of the valve stem 31, the abutment limiting block 21 abuts and limits the valve stem 31 to limit the valve stem 31 into the valve seat 20, thereby realizing the assembly limitation between the valve stem 31 and the valve seat 20, so as to facilitate the assembly of the valve stem 31 and the valve seat 20 on the valve body 11.

[0056] like Figures 1 to 4 As shown, in one embodiment, the cap 40 is threaded to the valve seat 20, and the cap 40 and the valve seat 20 enclose a limiting chamber 401 along the length of the valve stem 31. The ball valve 100 also includes a valve cap 32, which is at least partially disposed within the limiting chamber 401 and circumferentially limited by the valve stem 31. The valve cap 32 can be locked or unlocked on the valve seat 20 under the control of the cap 40. In other words, the valve cap 32 is always limited to the valve seat 20 by the limiting chamber 401 and is unaffected by the cap 40's ability to unlock the valve cap 32 on the valve seat 20.

[0057] As can be seen from the above, when the operator operates the ball valve 100, the cap 40 can be loosened from the valve seat 20 to release the lock of the valve cap 32 on the valve seat 20. Then, the operator can rotate the valve core ball 12 in the valve body 11 by turning the valve cap 32, thereby achieving the switching of the ball valve 100's on / off operation. During this process, there is no need to remove the valve cap 32, which can avoid the loss of the valve cap 32 and facilitate the operator's operation of the ball valve 100.

[0058] like Figure 3 , Figure 4As shown in the drawings, in an embodiment, the cap 40 has a pressing portion 41 which forms a limiting chamber 401 together with the valve seat 20; wherein the valve cap 32 has a valve cap edge 321 which is accommodated in the limiting chamber 401 and abuts against the pressing portion 41. That is, the valve cap edge 321 of the valve cap 32 is limited by the pressing portion 41 on the cap 40 to the valve seat 20, and can be locked on the valve seat 20 under the pressing of the pressing portion 41. Here, the cap 40 can be specifically configured as a nut.

[0059] As shown in the drawings, Figure 4 In an embodiment, the ball valve 100 further includes a gasket 50 which is sleeved on the valve stem 31 and abuts against the valve seat 20 and the valve cap edge 321 respectively. That is, the force transmission between the valve cap edge 321 and the valve seat 20 is realized through the gasket 50, which can improve the stability when the valve cap edge 321 is locked on the valve seat 20 by the pressing portion 41 of the cap 40.

[0060] As can be seen from the above, the ball valve 100 of the present application can realize the external sealing of the assembly between the valve seat 20 and the valve stem 31 by using the threaded fitting structure for screwing between the cap 40 and the valve seat 20, and the contact surface formed between the gasket 50 and the valve seat 20 when the gasket 50 is pressed and limited on the valve seat 20, so as to achieve the purpose of preventing the ball valve 100 from leaking.

[0061] In this embodiment, the material of the gasket 50 is plastic, so that the material characteristics of the plastic material can be used to buffer the force transmission between the valve seat 20 and the valve cap edge 321, preventing wear between the two due to mutual action. Here, the material of the gasket 50 can be specifically polytetrafluoroethylene or polyfluoroethylene propylene.

[0062] As shown in the drawings, Figures 1 to 4 The valve cap 32 further has a screwing body 322 which is rotatably arranged through the cap 40; wherein the screwing body 322 is sleeved on the valve stem 31 and circumferentially limited by the valve stem 31. So that the operator can realize the opening and closing operation of the ball valve 100 by manually operating the screwing body 322, which can facilitate the opening and closing operation of the ball valve 100. Here, the above-mentioned "screwing body 322 is rotatably arranged through the cap 40" specifically means that the screwing body 322 penetrates through the cap 40, and the screwing body 322 can rotate relative to the cap 40.

[0063] As shown in the drawings, Figures 1 to 3As shown, in an embodiment, the ball valve 100 further comprises a mounting plate 60, which is specifically connected to the valve body 11, and the ball valve 100 can be mounted and fixed through the mounting plate 60, so as to facilitate the assembly of the ball valve 100 in the air conditioning system. Here, the mounting plate 60 is fixed to the valve body 11 by welding, and the mounting plate 60 can be specifically fixed to the air conditioning system by two side bolts.

[0064] As can be seen from the above, in the assembly of the ball valve 100, the sealing ring 101 is first sleeved on the valve rod 31, and then the one end of the valve rod 31 is controlled to be inserted and matched with the valve core ball 12; then the valve seat 20 is sleeved on the valve rod 31, and the assembly limiting of the valve rod 31 through the valve seat 20 on the valve body 11 is realized by the abutting limiting between the abutting limiting block 21 on the valve seat 20 and the valve rod 31; then the valve seat 20 is fixed to the valve body 11; then the gasket 50 and the valve cap 32 are sleeved on the part of the valve rod 31 which extends out of the valve seat 20, and finally the cap 40 is used to press and fix the valve cap 32.

[0065] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0066] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application. Any appropriate changes and variations to the above embodiments within the spirit and scope of the present application are within the scope of the present application.

Claims

1. A ball valve, characterized in that, The ball valve (100) includes: The ball valve body (10) includes a valve body (11) and a valve core ball (12). The valve body (11) includes a first flow port (111) and a second flow port (112). The valve core ball (12) is rotatably installed in the valve body (11) and is used to control the flow / stop between the first flow port (111) and the second flow port (112). The valve stem assembly (30) has a connecting end (301) and a driving end (302), the driving end (302) being located outside the valve body (11), and the connecting end (301) being rotatably inserted inside the valve body (11) and connected to the valve core ball (12); A cap (40) is detachably connected to the valve body (11), and a through hole (410) is provided on the cap (40); When the cap (40) is connected to the valve body (11), the drive end (302) of the valve stem assembly (30) passes through the through hole (410) and extends outward toward the valve body (11).

2. The ball valve according to claim 1, characterized in that, The valve stem assembly (30) includes a valve stem (31) and a valve cap (32). The connecting end (301) is disposed on the valve stem (31). Both the valve stem (31) and the valve cap (32) are disposed through the through hole (410). The driving end (302) is disposed on the valve cap (32).

3. The ball valve according to claim 2, characterized in that, The ball valve (100) further includes a valve seat (20), and the cap (40) is threadedly connected to the valve seat (20). The cap (40) and the valve seat (20) enclose the valve stem (31) in the length direction to form a limiting chamber (401). The valve cap (32) is at least partially disposed in the limiting chamber (401) and is circumferentially limited by the valve stem (31). The valve cap (32) can be locked or unlocked on the valve seat (20) under the control of the cap (40).

4. The ball valve according to claim 3, characterized in that, The cap (40) has a pressing part (41), and the pressing part (41) and the valve seat (20) surround to form the limiting chamber (401); The valve cap (32) has a valve cap edge (321), which is received in the limiting chamber (401) and abuts against the pressing part (41).

5. The ball valve according to claim 4, characterized in that, The ball valve (100) also includes a washer (50), which is fitted onto the valve stem (31) and abuts against the valve seat (20) and the edge (321) of the valve cap, respectively.

6. The ball valve according to claim 2, characterized in that, The valve cap (32) also has a screwing body (322), which is rotatably disposed through the cap (40); The screwing body (322) is fitted onto the valve stem (31) and is circumferentially limited by the valve stem (31).

7. The ball valve according to claim 3, characterized in that, The valve seat (20) has an abutment limit block (21); Along the circumferential direction of the valve stem (31), the abutting limiting block (21) can abut against the valve stem (31) to limit the rotation angle of the valve stem (31) relative to the valve seat (20).

8. The ball valve according to claim 1, characterized in that, The ball valve body (10) also includes two connecting pipes (13), both of which are made of stainless steel; the two connecting pipes (13) are arranged on both sides of the valve body (11) and connected to the valve body (11) respectively. One of the connectors (13) is connected to the first flow port (111), and the other connector (13) is connected to the second flow port (112).

9. The ball valve according to claim 8, characterized in that, The ball valve body (10) also includes an air nozzle (14), which is installed on one of the connecting pipes (13) and communicates with the connecting pipe (13); The air nozzle (14) is made of stainless steel.

10. The ball valve according to claim 1, characterized in that, The ball valve (100) also includes a mounting plate (60), which is fixedly connected to the valve body (11), and the ball valve (100) can be installed and fixed through the mounting plate (60).

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