shutoff valve

Abstract

The application discloses a stop valve, which reduces the machining complexity of the stop valve by changing the structure of the stop valve, realizes independent machining and standardized production of each part, and significantly reduces the cost of the stop valve. The stop valve comprises a tubular valve body having a first port and a second port opposite in the axial direction and a third port and a fourth port opposite in the radial direction; a valve seat connected to the second port in a split manner, wherein the valve seat is provided with a valve port; a first bush connected to the inner wall of the valve body in a split manner; a valve rod located in the valve body and threadedly matched with the inner wall of the first bush to move the valve rod in the axial direction to block or open the valve port; an inner machine joint connected to the third port in a split manner; and a filling valve body connected to the fourth port in a split manner. By adopting the above-mentioned mode, the machining difficulty of the stop valve is simplified, and the machining cost of the stop valve is reduced by machining the valve body, the valve seat, the first bush, the filling valve body and the inner machine joint respectively.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, specifically to a shut-off valve. Background Technology

[0002] As a core component in the field of fluid control, the structural design and manufacturing process of gate valves directly affect production efficiency, cost control, and product performance. Existing traditional gate valves mostly adopt an integral design, which suffers from high processing complexity and strong coupling between functional parts, making it difficult to achieve independent processing of individual parts and standardized production. This results in low automation compatibility and significant material waste. Utility Model Content

[0003] The purpose of this utility model is to provide a gate valve that reduces the complexity of gate valve manufacturing by changing its structure, enabling independent processing and standardized production of each part, and significantly reducing the cost of the gate valve.

[0004] To achieve the above objectives, this utility model provides a shut-off valve, comprising: a tubular valve body having a first port and a second port opposite each other along the axial direction, and a third port and a fourth port opposite each other along the radial direction; a valve seat separately connected to the second port, the valve seat having a valve port portion; a first bushing separately connected to the inner wall of the valve body; a valve stem located inside the valve body and threadedly fitted to the inner wall of the first bushing to move axially to block or open the valve port portion; an internal connector separately connected to the third port portion; and a filling valve body separately connected to the fourth port portion.

[0005] By employing this method, which involves separately machining the valve body, valve seat, first bushing, filling valve body, and internal connector, the machining difficulty of the shut-off valve is simplified, and the machining cost is reduced. Furthermore, the internal connector and filling valve body are arranged radially opposite each other, which reduces the operating space required for the shut-off valve.

[0006] Optionally, the valve body includes a valve body, with the third port protruding radially from the valve body; part of the indoor unit connector is located inside the third port, and part is located outside the third port; it also includes a sleeve fitted on the outside of the third port, with part of the inner wall of the sleeve fitting and fixed to the outer wall of the third port, and the remaining part of the inner wall fitting and fixed to the indoor unit connector.

[0007] Optionally, the sleeve includes a first pipe section and a second pipe section, the first pipe section being fitted and fixed to the outer wall of the third port, and the second pipe section being fitted and fixed to the valve body;

[0008] The part where the first and second pipe sections meet is fitted and fixed to the part where the third port meets the valve body.

[0009] Optionally, it also includes a mounting plate having a mounting port; a portion of the valve seat is located inside the second port; a portion is located outside the second port and is fixed inside the mounting port.

[0010] Optionally, the mounting plate includes a plate body, with the mounting port protruding axially from the plate body along the valve body; the end face of the second port is pressed axially against the end face of the mounting port.

[0011] Optionally, the valve seat also includes a plug-in channel; the radial dimension of the plug-in channel is larger than the radial dimension of the valve port; an outdoor unit pipe is provided in the plug-in channel, and the end of the outdoor unit pipe is located in the plug-in channel and presses against the valve port.

[0012] Optionally, it also includes a valve cap and a second bushing, the second bushing being built into the first opening and adapted to the inner wall thread of the first opening; the valve cap being built into the second bushing and adapted to the second bushing thread.

[0013] Optionally, one end of the second bushing is located outside the first opening and is provided with a first flange; the first flange is pressed against the end face of the first opening along the axial direction; the valve cap is provided with a second flange at one end outside the first opening, and the second flange is pressed against the side of the first flange away from the first opening.

[0014] Optionally, the third and fourth ports are coaxially arranged.

[0015] Optionally, the filling valve body includes a first constricted end, which is located inside and fixedly connected to the fourth port, and the platform of the first constricted end is spaced apart from the end face of the fourth port.

[0016] Optionally, the valve body, valve seat, first bushing, internal machine connector, and filling valve body are all made of stainless steel.

[0017] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0019] Figure 1 This is an isometric view of the shut-off valve in the embodiment of this application;

[0020] Figure 2 for Figure 1 Cross-sectional view;

[0021] Figure 3 for Figure 2 A partial structural diagram;

[0022] Figure 4 for Figure 1 Exploded view;

[0023] Figure 5 for Figure 4 Cross-sectional view;

[0024] Figure 6 This is an axonometric view of the second bushing;

[0025] Figure 7 for Figure 6 Cross-sectional view.

[0026] Figure label:

[0027] 1—Valve body; 11—First port; 12—Second port; 13—Third port; 14—Fourth port; 15—Valve body; 2—Valve seat; 21—Valve port; 22—Plug-in channel; 3—First bushing; 42—Valve stem; 43—Valve cap; 441—Second flange; 443—Second bushing; 451—First flange; 6—Indoor unit connector; 7—Filling valve body; 81—First necked end; 82—Tabletop; 7—Sleeve; 81—First pipe section; 82—Second pipe section; 83—Mounting plate; 84—Mounting port; 85—Plate body; 9—Outdoor unit connector. Detailed Implementation

[0028] To achieve the above objectives, this utility model provides a shut-off valve, such as... Figures 1 to 7 As shown, Figure 1 This is an isometric view of the shut-off valve in the embodiment of this application; Figure 2 for Figure 1 Cross-sectional view; Figure 3 for Figure 2 A partial structural diagram; Figure 4 for Figure 1 Exploded view; Figure 5 for Figure 4 Cross-sectional view; Figure 6 This is an axonometric view of the second bushing; Figure 7 for Figure 6 Cross-sectional view.

[0029] The shut-off valve includes: a tubular valve body 1 having a first port 11 and a second port 12 opposite each other along the axial direction, and a third port 13 and a fourth port 14 opposite each other along the radial direction; a valve seat 2, separately connected to the second port 12, the valve seat 2 having a valve port 21; a first bushing 3, separately connected to the inner wall of the valve body 1; a valve stem 41, located inside the valve body 1 and threadedly fitted to the inner wall of the first bushing 3, for axial movement to block or open the valve port 21; an internal connector 5, separately connected to the third port 13; and a filling valve body 6, separately connected to the fourth port 14.

[0030] Specifically, the valve body 1 has a cylindrical structure and includes two openings opposite each other along its axial direction, which are respectively designated as a first port 11 and a second port 12. The valve body 1 also includes a valve body 15 and a third port 13 and a fourth port 14 that protrude radially from the valve body 15. The third port 13 and the fourth port 14 can be formed by a drawing process.

[0031] The valve stem 41 is located inside the first bushing 3 of the valve body 15 and is threaded to the inner wall of the first bushing 3. By rotating the valve stem 41, the valve stem 41 can be moved axially to open or close the valve port 21 located on the valve seat 2. The first bushing 3 is machined separately and then welded into the valve body 15.

[0032] After machining the valve seat 2 separately, fix the valve seat 2 to the second port 12, for example by welding or gluing.

[0033] The indoor unit connector 5 is used to connect with the indoor unit, and the indoor unit connector 5 is welded inside the third opening 13. The indoor unit connector 5 may also be provided with a cover to protect the indoor unit connector 5.

[0034] The charging valve body 6 is equipped with a charging component, which allows refrigerant to be charged into the air conditioner by operating the charging component. The charging valve body 6 is machined separately and welded into the third port 13.

[0035] By adopting this method, the processing difficulty of the gate valve is simplified and the processing cost of the gate valve is reduced by processing the valve body 1, valve seat 2, first bushing 3, filling valve body 6 and internal machine connector 5 separately.

[0036] In addition, the indoor unit connector 5 and the filling valve body 6 are arranged radially opposite each other, which can reduce the operating space of the shut-off valve.

[0037] According to some embodiments of this application, the third port 13 and the fourth port 14 are coaxially arranged. This facilitates manufacturing and makes the shut-off valve easy to operate.

[0038] According to other embodiments of this application, the valve body 1, valve seat 2, first bushing 3, internal connector 5, and filling valve body 6 are all made of stainless steel. By using stainless steel, the weight and cost of the shut-off valve can be reduced.

[0039] According to some embodiments of this application, the valve body 1 includes a valve body 15, and a third port 13 protrudes radially from the valve body 15; part of the indoor unit connector 5 is located inside the third port 13 and part is located outside the third port 13; it also includes a sleeve 7 sleeved on the outside of the third port 13, part of the inner wall of the sleeve 7 is fitted and fixed to the outer wall of the third port 13, and the remaining part of the inner wall is fitted and fixed to the indoor unit connector 5.

[0040] Specifically, the indoor unit connector 5 is provided with a second constricted end, which is built into the third opening 13 and welded to the third opening 13. The platform 62 of the second constricted end is radially abutted and fixed to the end face of the third opening 13. To increase the connection strength between the indoor unit connector 5 and the third opening 13, a sleeve 7 is provided on the outside of the third opening 13 and the indoor unit connector 5. Part of the inner wall of the sleeve 7 is welded to the outer wall of the third opening 13, and part of the inner wall is welded to the part of the indoor unit connector 5 located outside the third opening 13.

[0041] According to some other embodiments of this application, the sleeve 7 includes a first pipe section 71 and a second pipe section 72. The first pipe section 71 is fitted and fixed to the outer wall of the third opening 13, and the second pipe section 72 is fitted and fixed to the valve body 15. The portion where the first pipe section 71 and the second pipe section 72 meet is fitted and fixed to the portion where the third opening 13 meets the valve body 15.

[0042] Specifically, the sleeve 7 conforms to the valve body 15 and the third port 13. The first pipe section 71 extends radially along the valve body 1 so as to fit and fix with the third port 13, and the second pipe section 72 extends approximately axially along the valve body 1 so as to fit and fix with the valve body 15.

[0043] The junction of the first pipe section 71 and the second pipe section 72 is a curved transition. The curvature of this junction is consistent with the curvature of the curved surface at the junction of the valve body 15 and the third port 13, so that it can fit and be fixed to the junction of the valve body 15 and the third port 13.

[0044] In this way, the position where the valve body 15 connects to the third port 13 can be locally reinforced, thereby improving the connection strength between the valve body 15 and the third port 13.

[0045] According to some other embodiments of this application, the shut-off valve further includes a mounting plate 8, which is provided with a mounting port 81; part of the valve seat 2 is located inside the second port 12; part of the valve seat 2 is located outside the second port 12 and is fixed inside the mounting port 81.

[0046] Specifically, the mounting plate 8 is used for fixed connection with the outdoor unit. The mounting plate 8 has a mounting opening 81 that extends axially through the mounting plate 8. The second opening 12 is fitted and fixed to the outside of part of the valve seat 2, and the mounting opening 81 is fitted and fixed to the outside of the remaining part of the valve seat 2. The valve seat 2, the second opening 12, and the mounting opening 81 are welded together. In this way, the structural strength of the shut-off valve can be increased.

[0047] According to some other embodiments of this application, the mounting plate 8 includes a plate body 82, and a mounting port 81 protrudes from the plate body 82 along the axial direction of the valve body 1; the end face of the second port 12 presses against the end face of the mounting port 81 along the axial direction.

[0048] Specifically, the mounting port 81 protrudes from the plate body 82 in a direction perpendicular to the plate body 82, thereby increasing the contact area between the mounting port 81 and the valve seat 2. Simultaneously, the end face of the mounting port 81 extends axially to abut against and be fixed to the end wall of the valve body 15. This further enhances the connection strength between the valve body 15 and the mounting plate 8.

[0049] According to some embodiments of this application, the valve seat 2 further includes a plug-in channel 22; the radial dimension of the plug-in channel 22 is greater than the radial dimension of the valve port 21; an outdoor unit connector 9 is provided in the plug-in channel 22, and the end of the outdoor unit connector 9 is located in the plug-in channel 22 and presses against the valve port 21.

[0050] Specifically, the insertion channel 22 is used to install the outdoor unit connector 9. A stop surface is formed at the junction of the valve port 21 and the insertion portion. The stop surface is located on the bottom wall of the valve port 21, and the end of the outdoor unit connector 9 is fixed against the stop surface. This improves the connection strength between the outdoor unit connector 9 and the valve seat 2.

[0051] According to some embodiments of this application, the shut-off valve further includes a valve cap 42 and a second bushing 43. The second bushing 43 is built into the first opening 11 and is threadedly adapted to the inner wall of the first opening 11; the valve cap 42 is built into the second bushing 43 and is threadedly adapted to the second bushing 43.

[0052] Specifically, the second bushing 43 is internally threaded to accommodate a valve cap 42, which is used to seal the second bushing 43 and thus the valve body 15. By adopting this method, compared with the conventional method of placing the valve cap 42 on the outside of the valve body 15, the space occupied by the valve cap 42 can be further reduced.

[0053] According to some embodiments of this application, one end of the second bushing 43 is located outside the first opening 11 and is provided with a first flange 431; the first flange 431 is pressed against the end face of the first opening 11 along the axial direction; the valve cap 42 is provided with a second flange 421 at one end located outside the first opening 11, and the second flange 421 is pressed against the side of the first flange 431 away from the first opening 11.

[0054] The second bushing 43 has a head end and a tail end that are axially opposite each other. The head end of the second bushing 43 is provided with a first flange 431, which is formed by extending radially outward in a direction away from the central axis of the second bushing 43. The first flange 431 is used to limit the depth to which the second bushing 43 is inserted into the first opening 11.

[0055] In the specific operation, the second bushing 43 is rotated so that it moves axially downward until the first flange 431 abuts against the end of the first opening 11. Alternatively, the first flange 431 can be welded to the end of the first opening 11.

[0056] In this way, the valve cap 42 can be installed through the second bushing 43. The second bushing 43, the valve cap 42, and the first opening 11 can be made of the same material or different materials. No specific limitation is made here.

[0057] The valve cap 42 includes a head end and a tail end that are axially opposite each other. The tail end of the valve cap 42 is located inside the second bushing 43 and is threadedly adapted to at least a portion of the inner wall of the second bushing 43. The head end of the valve cap 42 is located outside the second bushing 43 and is provided with a second flange 421, which extends radially outward in a direction away from the central axis of the valve cap 42.

[0058] During installation, after the first opening 11 is fixedly connected to the second bushing 43, the bottom end of the valve cap 42 is screwed into the second bushing 43 until the second flange 421 is pressed against the first flange 431.

[0059] When it is necessary to operate the valve stem 41, the valve cap 42 can be unscrewed first, and then the valve stem 41 can be operated through the space inside the second bushing 43.

[0060] In this way, the depth of the valve cap 42 rotating within the second bushing 43 can be limited.

[0061] The first flange 431 and the second flange 421 can be aligned with the outer wall of the first opening 11, or they can extend radially beyond the outer wall of the first opening 11. No specific limitation is made here.

[0062] According to some other embodiments of this application, the filling valve body 6 includes a first constricted end 61, which is located inside the fourth opening 14 and fixedly connected to the fourth opening 14. The platform 62 of the first constricted end 61 is spaced apart from the end face of the fourth opening 14.

[0063] Specifically, the filling valve body 6 has a large-diameter end and a small-diameter end. The small-diameter end is a first constricted end 61, which is inserted into and fixed to the fourth port 14. The large-diameter end is located on the outside of the valve body 151, and the end walls of the fourth port 14 are spaced apart. This allows the filling valve body 6 to be fixedly connected to the valve body 15.

[0064] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above description of the implementation methods is only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0065] The foregoing embodiments are merely illustrative. Those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the scope of the claims. Furthermore, those skilled in the art can combine the embodiments in part or in whole, and all technical solutions derived from such combinations fall within the scope of this patent.

Claims

1. A shut-off valve, characterized in that, include: The tubular valve body (1) has a first port (11) and a second port (12) opposite each other along the axial direction, and a third port (13) and a fourth port (14) opposite each other along the radial direction; The valve seat (2) is separately connected to the second port (12), and the valve seat (2) is provided with a valve port (21); The first bushing (3) is separately connected to the inner wall of the valve body (1); The valve stem (41) is located inside the valve body (1) and is threaded to the inner wall of the first bushing (3) to block or open the valve port (21); The indoor unit connector (5) is separately connected to the third port (13); and The filling valve body (6) is separately connected to the fourth port (14).

2. The shut-off valve according to claim 1, characterized in that, The valve body (1) includes a valve body (15), and the third port (13) protrudes radially from the valve body (15); Part of the indoor unit connector (5) is located inside the third opening (13), and part is located outside the third opening (13); It also includes a sleeve (7) fitted on the outside of the third opening (13), with part of the inner wall of the sleeve (7) being fitted and fixed to the outer wall of the third opening (13), and the remaining part of the inner wall being fitted and fixed to the internal machine connector (5).

3. The shut-off valve according to claim 2, characterized in that, The sleeve (7) includes a first pipe section (71) and a second pipe section (72). The first pipe section (71) is fitted and fixed to the outer wall of the third opening (13), and the second pipe section (72) is fitted and fixed to the valve body (15). The portion where the first pipe section (71) and the second pipe section (72) meet is attached and fixed to the portion where the third port (13) meets the valve body (15).

4. The shut-off valve according to claim 1, characterized in that, It also includes a mounting plate (8) having a mounting opening (81); Part of the valve seat (2) is located inside the second port (12); part of it is located outside the second port (12) and is fixed inside the mounting port (81).

5. The shut-off valve according to claim 4, characterized in that, The mounting plate (8) includes a plate body (82), and the mounting opening (81) protrudes from the plate body (82) along the axial direction of the valve body (1); The end face of the second opening (12) is pressed against the end face of the mounting opening (81) along the axial direction.

6. The shut-off valve according to claim 4, characterized in that, The valve seat (2) further includes a insertion channel (22); the radial dimension of the insertion channel (22) is larger than the radial dimension of the valve port (21); An outdoor unit connector (9) is provided in the plug-in channel (22), and the end of the outdoor unit connector (9) is located in the plug-in channel (22) and presses against the valve port (21).

7. The shut-off valve according to claim 1, characterized in that, It also includes a valve cap (42) and a second bushing (43), the second bushing (43) being built into the first opening (11) and threadedly fitted to the inner wall of the first opening (11); the valve cap (42) being built into the second bushing (43) and threadedly fitted to the second bushing (43).

8. The shut-off valve according to claim 7, characterized in that, One end of the second bushing (43) is located outside the first opening (11) and is provided with a first flange (431); the first flange (431) is pressed against the end face of the first opening (11) along the axial direction; The valve cap (42) is provided with a second flange (421) at one end outside the first opening (11), and the second flange (421) presses against the side of the first flange (431) away from the first opening (11).

9. The shut-off valve according to claim 1, characterized in that, The filling valve body (6) includes a first constricted end (61), which is located inside the fourth opening (14) and fixedly connected to the fourth opening (14). The platform (62) of the first constricted end (61) is spaced apart from the end face of the fourth opening (14).

10. The shut-off valve according to any one of claims 1-9, characterized in that, The valve body (1), the valve seat (2), the first bushing (3), the indoor unit connector (5), and the filling valve body (6) are all made of stainless steel.

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