shutoff valve

Abstract

The utility model provides a kind of stop valve, reduce or avoid the cracking condition of the stress concentration part of stop valve occurs. The stop valve includes valve stem containing part and valve body;Valve body is equipped with valve port part, and valve stem containing part contains the valve stem piece for opening and plugging valve port part, and valve body and valve stem containing part are connected in body. This can reduce or avoid the cracking condition of the stress concentration part of stop valve occurs, improve the deformation resistance of stop valve under high pressure working condition.

Description

Technical Field

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

[0002] The shut-off valve includes a valve body for connecting to the outdoor unit of the air conditioner, a charging pipe section set at an angle to the valve body, and / or an indoor unit connecting pipe that can connect to the indoor unit of the air conditioner. However, cracks may occur at the transition point where the charging pipe and / or the indoor unit connecting pipe intersects with the valve body. Utility Model Content

[0003] The purpose of this invention is to provide a stop valve that reduces or avoids cracking in areas of stress concentration.

[0004] To achieve the above objectives, this utility model provides a gate valve, which includes a valve stem receiving portion and a valve body; the valve body is provided with a valve port, and the valve stem receiving portion houses a valve stem for opening and sealing the valve port, and the valve body and the valve stem receiving portion are separately connected.

[0005] This can reduce or avoid cracking in the stress concentration areas of the gate valve, and improve the gate valve's resistance to deformation under high pressure conditions.

[0006] Optionally, the valve body has an upper wall portion and a lower wall portion that is longitudinally opposite to the upper wall portion along the stop valve; the upper wall portion is connected to the valve stem receiving portion, the valve port portion is formed in the lower wall portion, and the lower wall portion is used to connect to the outdoor unit.

[0007] In this embodiment, the lower wall portion with a valve port is used to connect to the outdoor unit, and the valve stem receiving portion, which accommodates the valve stem, is provided on the upper wall portion. The valve stem moves longitudinally to press against the valve port portion to close the shut-off valve or moves away from the valve port portion to open the shut-off valve. The movement of the valve stem is achieved by external rotation by the operator. By providing the valve stem receiving portion longitudinally on the side of the valve body away from the outdoor unit, interference between the sheet metal parts and the outdoor unit can be avoided when operating the valve stem.

[0008] Optionally, the upper wall is provided with a first mounting hole, and a portion of the valve stem receiving part is located in the first mounting hole and fixedly connected to the first mounting hole. By inserting the valve stem receiving part into the first mounting hole and forming a fixed connection with the first mounting hole, the coaxiality of the valve body can be ensured while achieving a reliable connection between the valve stem receiving part and the valve body.

[0009] Optionally, the first mounting hole is provided with a first support ring wall, which extends radially, and the valve stem receiving portion abuts against the first support ring wall longitudinally.

[0010] By setting the first support ring wall to abut against the valve stem receiving part in the longitudinal direction to form a longitudinal limit, the connection area between the valve body and the valve stem receiving part is also increased.

[0011] Optionally, it also includes a first connector made of solder, a portion of which is located between the valve stem receiving portion and the first support ring wall, and a portion of which is located between the valve stem receiving portion and the wall of the first mounting hole.

[0012] In this way, during the welding process, the solder can spread to the area between the valve stem receiving part and the first support ring wall, as well as the area between the valve stem receiving part and the hole wall of the first mounting hole, increasing the connection strength between the valve stem receiving part and the valve body.

[0013] Optionally, the valve body has a first sidewall portion in the transverse direction, the first sidewall portion is provided with a second mounting hole, and the filling receiving portion has a plug-in end, which is located in the second mounting hole and welded to the second mounting hole.

[0014] In this way, cracking in the transition area where the filling chamber connects to the valve body can be reduced or avoided.

[0015] Optionally, the filling receiving portion further has a body portion with a radial dimension larger than that of the insertion end, the end face of the body portion pressing against the surface of the first side wall portion; the first side wall portion also forms an annular filling groove, and the surface of the first side wall portion is provided with an end slot of the filling groove; the end face of the body portion covers the end slot.

[0016] By setting a packing groove to accommodate the welding material, the filling and receiving part can be welded to the valve body.

[0017] Optionally, the packing groove is disposed around the second mounting hole and extends through the wall of the second mounting hole to form a side groove;

[0018] A second annular wall is also provided inside the second mounting hole; the plug end covers the side groove and presses against the second annular wall.

[0019] In this way, the solder placed in the filler groove can spread through the side groove opening to the area between the plug end and the second mounting hole, as well as the area between the second annular wall and the plug end.

[0020] Optionally, it also includes a second connector made of solder, a portion of which is located in the filler groove, a portion of which is located between the surface of the body portion and the first sidewall portion and the end face of the body portion; a portion of which is located between the second mounting hole and the plug end; and a portion of which is located between the second annular wall and the end face of the plug end.

[0021] This can further improve the connection strength between the filling container and the valve body.

[0022] Optionally, the valve body further includes a second sidewall portion that is laterally opposite to the first sidewall portion; the second sidewall portion is used to connect to the indoor unit connection portion.

[0023] In this way, filling and vacuuming functions can be achieved through the filling chamber.

[0024] Optionally, it also includes a mounting plate, the middle of which extends beyond both ends of the mounting plate; the valve body is fixedly connected to the middle of the mounting plate.

[0025] This enables the connection between the valve body and the outdoor unit.

[0026] 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

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the shut-off valve in an embodiment of this utility model, and an isometric view.

[0029] Figure 2 yes Figure 1 Exploded view;

[0030] Figure 3 yes Figure 1 Cross-sectional view;

[0031] Figure 4 yes Figure 2 Cross-sectional view.

[0032] Figure label:

[0033] 1-Connecting channel; 11-Horizontal section; 12-Vertical section; 11a-Valve port; 2-Valve body; 21-Upper wall; 22-First mounting hole; 23-First support ring wall; 24-Lower wall; 25-First side wall; 26-Second mounting hole; 27-Packing groove; 28-Second annular wall; 3-Valve stem receiving part; 31-Valve stem component; 4-Filling receiving part; 41-Filling component; 42-Plug-in part; 43-Body part; 5-Mounting plate; 6-Pipe fitting; 7-Indoor unit connection part. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] In related technical solutions, such as the gate valve in the background technology, a forging process is used to integrally form the valve. The forging process involves applying external force to cause plastic deformation of the metal to obtain a gate valve forging with a predetermined shape and size. The filling pipe and / or the transition part where the internal connecting pipe of the gate valve forging connects to the valve body are prone to cracking under the combined effects of various factors such as fluid pressure, temperature changes, and pipeline vibration over a long period of time.

[0036] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the shut-off valve in an embodiment of this utility model, and an isometric view. Figure 2 yes Figure 1 Exploded view; Figure 3 yes Figure 1 Cross-sectional view; Figure 4 yes Figure 2 Cross-sectional view.

[0037] To achieve the above objectives, this utility model provides a shut-off valve. The shut-off valve includes at least one of a filling receiving portion 4 housing a filling member 41 and an indoor unit connection portion 7 for connection to an indoor unit, a valve stem receiving portion 3 housing a valve stem member 31, and a valve body 2 having a valve port portion 11a. In this application, the shut-off valve has a valve stem receiving portion 3 and a valve body 2, and also includes one of the indoor unit connection portion 7 and the filling receiving portion 4, or both. At least two of the valve body 2, valve stem receiving portion 3, filling receiving portion 4, and indoor unit connection portion 7 are individually machined and then connected to form an integral structure.

[0038] The valve body 2, valve stem receiving part 3, filling receiving part 4, and indoor unit connection part 7 can be any two of the following as separate components.

[0039] It can also be any three of them as separate components.

[0040] Alternatively, the valve body 2, valve stem receiving part 3, filling receiving part 4, and indoor unit connection part 7 can all be separate components.

[0041] The valve body 2, valve stem receiving part 3, filling receiving part 4, and / or internal connection part 7, which are separate components, are connected to form an integral structure. This reduces or avoids cracking in the stress concentration areas of the gate valve, and improves the gate valve's resistance to deformation under high pressure conditions.

[0042] In some specific examples, the shut-off valve includes an indoor unit connection part 7. The indoor unit connection part 7 can be a valve body integrally machined with the valve body 2, or it can be a valve body with an integral structure formed by connecting the indoor unit connection part 7 separately to the valve body 2. The valve body is provided with a valve port part 11a.

[0043] The opening and closing of the valve port 11a is achieved by controlling the valve stem 31.

[0044] The valve stem 31 is movably accommodated within the valve stem receiving portion 3. The valve stem 31 and the valve stem receiving portion 3 form a threaded pair, and the circumferential rotation of the valve stem 31 can be converted into longitudinal linear movement, thereby pressing against the valve port 11a to close the valve or moving away from the valve port 11a to open the valve.

[0045] The valve stem receiving part 3 can be machined separately and then connected to the valve body 2, or it can be machined integrally with the valve body 2.

[0046] For example, the shut-off valve also includes a filling receiving portion 4. The filling receiving portion 4 can be integrally formed with the valve body 2. Alternatively, it can be a structure in which the filling receiving portion 4 and the valve body 2 are machined separately and then connected to form a whole.

[0047] For example, the shut-off valve also includes an indoor unit connection portion 7. The indoor unit connection portion 7 is located horizontally opposite the filling receiving portion 4 along the shut-off valve. Thus, when the indoor unit connection portion 7 is provided and is connected to the indoor unit, both vacuuming and filling operations can be performed on the indoor unit through the filling receiving portion 4.

[0048] Example 1

[0049] The following example, shown in the accompanying drawings, illustrates a specific scheme of this application.

[0050] In the example shown in the figure, the valve body 2 is connected to the indoor unit connection part 7, and the indoor unit connection part 7 and the valve body 2 are integrally formed, and the two constitute the valve body.

[0051] A connecting channel 1 is formed inside the valve body. One end of the connecting channel 1 is connected to the corresponding pipe of the outdoor unit of the air conditioner through the valve body, and the other end of the connecting channel can be connected to the corresponding pipe of the indoor unit of the air conditioner.

[0052] The connecting channel 1 is located within the valve body and is L-shaped to form a transverse section 11 and a vertical section 12. The vertical section 12 extends longitudinally and penetrates part of the wall of the transverse section 11 to form the aforementioned valve port 11a. The transverse section 11 is located in the indoor unit connection section 7, and the vertical section 12 is located in the valve body 2. The vertical section 12 penetrates the lower end face of the valve body 2 to form an outdoor unit connection port that communicates with the outdoor unit.

[0053] The valve body 2 has a regular hexahedral structure, having an upper wall portion 21 and a lower wall portion 24 opposite to the upper wall portion 21 along the longitudinal direction of the shut-off valve. Here, "upper" and "lower" refer to... Figure 3 The longitudinal direction of the stop valve is defined by reference and corresponds to the vertical direction on the paper.

[0054] The upper wall portion 21 is connected to the valve stem receiving portion 3, and the valve port portion 11a is formed in the lower wall portion 24, which is used to connect to the outdoor unit. Here, the outdoor unit refers to the outdoor unit of the air conditioning system, and the aforementioned indoor unit refers to the indoor unit of the air conditioning system. The indoor unit connection portion 7 is indirectly connected to the indoor unit through a pipe.

[0055] In this embodiment, the lower wall portion 24 with valve port portion 11a is used to connect with the outdoor unit, and the valve stem receiving portion 3, which accommodates the valve stem 31, is provided on the upper wall portion 21. The valve stem 31 moves longitudinally to press against the valve port portion 11a to close the shut-off valve or moves away from the valve port portion 11a to open the shut-off valve. The movement of the valve stem 31 is achieved by external rotation by the operator. By providing the valve stem receiving portion 3 longitudinally on the side of the valve body away from the outdoor unit, interference between the sheet metal parts and the outdoor unit can be avoided when operating the valve stem 31.

[0056] To achieve a high-strength connection between the valve stem receiving portion 3 and the valve body 2, the upper wall portion 21 is provided with a first mounting hole 22. Part of the aforementioned longitudinal section serves as the first mounting hole 22. The inner cavity of the tubular valve stem receiving portion 3 is connected to the longitudinal section along the longitudinal direction through a part of the transverse section 11 and is opposite to the valve port portion 11a along the longitudinal direction of the shut-off valve.

[0057] The first mounting hole 22 has a socket formed on the surface of the upper wall portion 21. A portion of the valve stem receiving portion 3 is inserted into the first mounting hole 22 through the socket and is fixedly connected to the first mounting hole 22 by welding.

[0058] Under the action of external force, the valve stem 31 can move down from the inner cavity of the valve stem receiving portion 3 to the transverse section 11 and abut against the valve port portion 11a provided on the wall of the transverse section 11 to close the valve. Alternatively, it can move away from the valve port portion 11a from the transverse section 11 toward the inner cavity of the valve stem receiving portion 3 to close the valve.

[0059] By inserting the valve stem receiving part 3 into the first mounting hole 22 and forming a fixed connection with the first mounting hole 22, the coaxiality of the valve body can be guaranteed while achieving a reliable connection between the valve stem receiving part 3 and the valve body.

[0060] Optionally, the first mounting hole 22 is provided with a first support ring wall 23, which protrudes radially inward and is longitudinally opposite to the end face of the valve stem receiving portion 3. When the valve stem receiving portion 3 is located inside the first mounting hole 22, it abuts against the first support ring wall 23 longitudinally.

[0061] By setting the first support ring wall 23 to abut against the valve stem receiving part 3 in the longitudinal direction to form a longitudinal limit, the connection area between the valve body and the valve stem receiving part 3 is also increased.

[0062] In this embodiment, although the indoor unit connection part 7 and the valve body 2 are integrally formed, the surface of the indoor unit connection part 7 extends longitudinally beyond the first support ring wall 23 and is close to the upper wall part 21. In this way, cracking can be further avoided at the transition part where the indoor unit connection part 7 connects to the valve body 2.

[0063] Optionally, the gate valve further includes a first connector made of solder, part of which is located between the valve stem receiving portion 3 and the first support ring wall 23, and part of which is located between the valve stem receiving portion 3 and the wall of the first mounting hole 22. This allows for the formation of a first connector structure that is close to a flange, increasing the connection area between the valve stem receiving portion 3 and the valve body 2.

[0064] In this way, during the welding process, the solder can spread to the area between the valve stem receiving part 3 and the first support ring wall 23, as well as the area between the valve stem receiving part 3 and the hole wall of the first mounting hole 22, increasing the connection strength between the valve stem receiving part 3 and the valve body.

[0065] The valve body 2 has a first side wall portion 25 and a second side wall portion arranged opposite to each other in the transverse direction. The first side wall portion 25 is used to connect the filling and receiving portion 4, and the internal unit connection portion 7 is provided on the second side wall portion.

[0066] Therefore, when the indoor unit connection part 7 is provided and the indoor unit connection part 7 is connected to the indoor unit, the indoor unit can be vacuumed through the filling container part 4, and the filling operation can also be performed through the filling container part 4.

[0067] Specifically, the first sidewall portion 25 is provided with a second mounting hole 26. A portion of the transverse section 11 extends beyond the valve port portion 11a, and the portion extending beyond the valve port portion 11a serves as the second mounting hole 26, which forms an insertion slot on the surface of the first sidewall portion 25.

[0068] The filling and receiving portion 4 has a plug end 42 and a body portion 43. The radial dimension of the body portion 43 is larger than the radial dimension of the plug end 42. That is, the plug end 42 is formed on the end face of the body portion 43 facing the first side wall portion 25 and is concentrically disposed with the body portion 43.

[0069] The plug end 42 is inserted into the second mounting hole 26 and welded to the second mounting hole 26. The end face of the main body 43 presses against the surface of the first side wall 25 to form a lateral stop and limit.

[0070] In this way, cracking in the transition area where the filling chamber 4 connects to the valve body can be reduced or avoided.

[0071] Optionally, the first sidewall portion 25 also forms an annular filler groove 27. The filler groove 27 is used to accommodate solder. The filler groove 27 is disposed around the second mounting hole 26, and the surface of the first sidewall portion 25 is provided with an end slot of the filler groove 27. The end face of the body portion 43 covers the end slot. The end slot is spaced apart from or connected to the insertion port of the second mounting hole 26.

[0072] A second annular wall 28 is also provided inside the second mounting hole 26. The second annular wall 28 is parallel to the surface of the main body 43, and the insertion end 42 covers the side slot and presses against the second annular wall 28.

[0073] By providing a packing groove 27 to accommodate the welding material, the welding of the filling and receiving part 4 to the valve body can be achieved.

[0074] With the packing groove 27 connected to the second mounting hole 26, the packing groove 27 extends radially along the second mounting hole 26 and penetrates the wall of the second mounting hole 26 to form a side groove.

[0075] In this way, the solder set in the filler groove 27 can spread through the side groove opening to the area between the plug end 42 and the second mounting hole 26 and the area between the second annular wall 28 and the plug end 42.

[0076] Optionally, the gate valve further includes a second connector made of solder. Part of the second connector is located in the packing groove 27, and part is located between the surface of the body portion 43 and the first sidewall portion 25 and the end face of the body portion 43. Part is located between the second mounting hole 26 and the insertion end 42; and part is located between the second annular wall 28 and the end face of the insertion end 42. This forms a Z-shaped connection area. This further improves the connection strength between the filling receiving portion 4 and the valve body.

[0077] In all the above solutions, the shut-off valve also includes a mounting plate 5, the middle of which extends beyond both ends of the mounting plate 5; the valve body 2 is fixedly connected to the middle of the mounting plate 5. A through hole is provided in the middle of the mounting plate 5, which communicates with the longitudinal section for the pipe fitting 6 to pass through. Both ends of the mounting plate 5 are fixedly connected to the outdoor unit through sheet metal parts, thereby realizing the connection between the valve body 2 and the outdoor unit.

[0078] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A shut-off valve, characterized in that, It includes a valve stem receiving part (3) and a valve body (2); the valve body (2) is provided with a valve port (11a), and the valve stem receiving part (3) contains a valve stem member (31) for opening and blocking the valve port (11a). The valve body (2) and the valve stem receiving part (3) are connected separately.

2. The shut-off valve according to claim 1, characterized in that, The valve body (2) has an upper wall portion (21) and a lower wall portion (24) that is opposite to the upper wall portion (21) along the longitudinal direction of the shut-off valve; the upper wall portion (21) is connected to the valve stem receiving portion (3), and the valve port portion (11a) is formed on the lower wall portion (24); the lower wall portion (24) is used to connect to the outdoor unit.

3. The shut-off valve according to claim 2, characterized in that, The upper wall portion (21) is provided with a first mounting hole (22), and a portion of the valve stem receiving portion (3) is located in the first mounting hole (22) and is fixedly connected to the first mounting hole (22).

4. The shut-off valve according to claim 3, characterized in that, The first mounting hole (22) is provided with a first support ring wall (23), which extends radially, and the valve stem receiving portion (3) abuts against the first support ring wall (23) longitudinally.

5. The shut-off valve according to claim 4, characterized in that, It also includes a first connector made of solder, part of which is located between the valve stem receiving portion (3) and the first support ring wall (23), and part of which is located between the valve stem receiving portion (3) and the hole wall of the first mounting hole (22).

6. The shut-off valve according to claim 1, characterized in that, The valve body (2) has a first sidewall portion (25) in the transverse direction, and the first sidewall portion (25) is provided with a second mounting hole (26); It also includes a filling receiving portion (4) having a plug-in end (42), the plug-in end (42) being located inside the second mounting hole (26) and welded to the second mounting hole (26).

7. The shut-off valve according to claim 6, characterized in that, The filling receiving portion (4) also has a body portion (43) with a radial dimension larger than that of the plug end (42), the end face of the body portion (43) pressing against the surface of the first side wall portion (25); the first side wall portion (25) also forms an annular filling groove (27), the surface of the first side wall portion (25) is provided with the end slot of the filling groove (27); the end face of the body portion (43) covers the end slot.

8. The shut-off valve according to claim 7, characterized in that, The filling groove (27) is arranged around the second mounting hole (26) and penetrates the wall of the second mounting hole (26) to form a side groove; a second annular wall (28) is also provided inside the second mounting hole (26); the plug end (42) covers the side groove and presses against the second annular wall (28); It also includes a second connector made of solder, part of which is located in the filler groove (27), part of which is located between the surface of the first side wall portion (25) and the end face of the body portion (43); part of which is located between the second mounting hole (26) and the plug end (42); and part of which is located between the second annular wall (28) and the end face of the plug end (42).

9. The shut-off valve according to any one of claims 6-8, characterized in that, The valve body (2) also includes a second side wall portion that is laterally opposite to the first side wall portion (25); the second side wall portion is connected to an indoor unit connection portion (7).

10. The shut-off valve according to claim 9, characterized in that, It also includes a mounting plate (5), the middle of which extends beyond both ends of the mounting plate (5); The valve body (2) is fixedly connected to the middle part of the mounting plate (5).

Images