Valve body and low-pressure stop valve

Abstract

The utility model discloses a valve body and a low pressure stop valve, relates to the technical field of valve body equipment, and comprises a valve seat, the valve seat is provided with an air inlet hole, a mounting hole, a refrigerant hole and an air outlet hole, the air inlet hole and the mounting hole are coaxially arranged by taking a first axis as a central axis, and the refrigerant hole and the air outlet hole are coaxially arranged by taking a second axis as a central axis. The first axis and the second axis are arranged in a crossed mode and located on the first plane, a reinforcing rib is arranged on the outer wall of the valve seat and located among orifices of the air inlet hole, the mounting hole, the refrigerant hole and the air outlet hole, and the reinforcing rib comprises two half reinforcing ribs which are symmetrically arranged and distributed on the same side of the valve seat. The symmetrical face of the two half reinforcing ribs is perpendicular to the first plane and passes through the first axis. The stop valve solves the problem that the use safety of the stop valve is low, has the effects of safety and stability, reduces the risk of deformation or damage of the stop valve, and improves the use safety of the stop valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body equipment, in particular to a valve body and a low-pressure stop valve. Background Art

[0002] Low-pressure stop valve is a valve used to control the flow of fluids. It is usually used in the refrigeration system of air conditioners. Low-pressure stop valves are generally located on the low-pressure side of the air conditioning refrigeration system to control the flow of refrigerant in the refrigeration cycle. Its function is to prevent the refrigerant from continuing to circulate when the system needs to stop refrigeration or reduce the refrigeration effect. This helps to regulate the temperature and pressure of the system and ensure the normal operation and safety of the system.

[0003] At present, the low-pressure stop valve used in the air-conditioning refrigeration system includes a valve body and a valve core. The valve body is generally a three-way structure, and is provided with an air inlet, an air outlet and a refrigerant part. The air inlet is connected to the outdoor unit of the air conditioner through a connecting pipe, and the air outlet is usually connected to another connecting pipe with a cross-head nut, that is, the air outlet is connected to the indoor unit of the air conditioner through the connecting pipe, and the opening and closing of the air inlet is realized by the valve core, that is, the connection and closing of the indoor unit and the outdoor unit are realized, and the refrigerant part is used to inject or discharge the refrigerant.

[0004] However, since the air outlet is connected to the connecting pipe by the cross-head nut, in order to ensure the connection strength between the air outlet and the connecting pipe, a large tightening torque is generally applied to the air outlet when tightening the cross-head nut. Under the action of the tightening torque, the air outlet and the valve body of the stop valve are prone to deformation or even damage, which may cause a gap in the sealing fitting part between the valve body and the valve core of the stop valve, even if the sealing performance of the stop valve is reduced. The refrigerant is a high-risk gas, which increases the risk of safety accidents and reduces the safety of the use of the stop valve. Utility Model Content

[0005] In order to overcome the disadvantage of low safety in use of the stop valve in the prior art, the utility model provides a valve body, which reduces the risk of deformation or damage of the valve body and improves the safety of the stop valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A valve body comprises a valve seat, wherein the valve seat is provided with an air inlet hole, a mounting hole, a refrigerant hole and an air outlet hole, the air inlet hole and the mounting hole are coaxially arranged with a first axis as the central axis, the refrigerant hole and the air outlet hole are coaxially arranged with a second axis as the central axis, the first axis and the second axis are cross-arranged and both are located on a first plane, the outer wall of the valve seat is provided with reinforcing ribs, the reinforcing ribs are located between the orifices of the air inlet hole, the mounting hole, the refrigerant hole and the air outlet hole, the reinforcing ribs include two half reinforcing ribs which are symmetrically arranged and distributed on the same side of the valve seat, and the symmetry planes of the two half reinforcing ribs are perpendicular to the first plane and pass through the first axis.

[0008] In the above technical scheme, when this valve body is used as a valve body in a stop valve, the air inlet hole, the refrigerant hole and the air outlet hole form a three-way structure, the air inlet hole end of the valve seat is connected to the outdoor unit of the air conditioner through a connecting pipe, and the air outlet hole end of the valve seat is threadedly connected to a cross-head nut, and is connected to another connecting pipe through the cross-head nut, so as to achieve connection with the indoor unit of the air conditioner, wherein the valve core for opening and closing the air inlet hole is installed in the mounting hole, and when the stop valve needs to be closed, the valve core is sealed with the hole wall of the air inlet hole, that is, the connecting part between the air inlet hole of the valve seat and the refrigerant hole, the air outlet hole and the mounting hole is the sealing matching section of the valve body and the valve core. When the air outlet hole end of the valve seat is threadedly connected to the cross-head nut, that is, when a large tightening torque is applied to the valve body as a whole, a reinforcing rib is integrally formed on the outer wall of the valve seat, and the reinforcing rib strengthens the overall strength of the valve seat. At the same time, the reinforcing rib is located between the air inlet hole, the mounting hole, the refrigerant hole and the air outlet hole, and the reinforcing rib includes two half reinforcing ribs which are symmetrically arranged and distributed on the same side of the valve seat, and the symmetry planes of the two half reinforcing ribs are arranged perpendicular to the first plane and pass through the first axis, so that the reinforcing rib is located at the connecting part of the air inlet hole of the valve seat, and the reinforcing rib is located at the key part of the valve body for sealing with the valve core, that is, the strength of the part of the valve body for sealing with the valve core is strengthened by reinforcing ribs, which reduces the risk of reducing the sealing performance of the stop valve due to deformation of the valve body due to excessive tightening torque, and improves the safety of the valve body. At the same time, the reinforcing ribs include two half reinforcing ribs that are symmetrically arranged and distributed on the same side of the valve seat. The symmetry planes of the two half reinforcing ribs are arranged perpendicular to the first plane and pass through the first axis, so that the valve body is evenly stressed, further reducing the risk of deformation of the valve body under stress, and facilitating the processing of the valve body by the staff. There is no need to distinguish between the refrigerant port and the air outlet when processing the reinforcing ribs, which improves the stability of the valve body and the convenience of processing. In addition, reinforcing ribs are used to increase the strength of key parts without increasing the overall thickness of the valve body in order to increase the strength of the valve body. Increasing the thickness of the valve body will increase the volume of the valve body and increase the production cost of the valve body. Therefore, the present application reduces the volume required for the valve body to resist the same tightening torque, thereby reducing the production cost of the valve body.

[0009] Preferably, a mounting seat is provided at one end of the valve seat close to the air inlet hole, the mounting seat extends along an axial direction perpendicular to the first plane, and one end of the reinforcing rib is provided on the mounting seat.

[0010] In the structure, installing a mounting seat on the valve seat facilitates the subsequent installation between the valve seat and the connecting pipe. At the same time, one end of the reinforcement rib is fixedly connected to the mounting seat. The mounting seat can reduce the risk of deformation of the reinforcement rib, further improve the effect of the reinforcement rib on increasing the strength of the valve body, reduce the risk of deformation of the valve body due to excessive tightening torque, and reduce the sealing performance of the stop valve, thereby improving the safety of the valve body.

[0011] Preferably, the end surfaces at both ends of the reinforcing rib are projected onto the first plane to form two end lines, the second axis is located between the two end lines, and the distance between the second axis and the end line away from the mounting seat is L1, 6mm≤L1≤8mm.

[0012] In the structure, the part where the air inlet, the mounting hole, the refrigerant hole and the air outlet are connected is the weak part of the valve seat, wherein the end faces of the two ends of the reinforcing rib are projected on the first plane to form two end lines, the second axis is located between the two end lines, and the second axis is the center axis of the refrigerant hole and the air outlet, so that the reinforcing rib covers the weak part of the valve seat, thereby further reducing the risk of the valve body being deformed due to excessive tightening torque and affecting the use of the valve body, and improving the stability of the use of the valve body. The distance between the second axis and the end line away from the mounting seat is greater than or equal to 6 mm and less than or equal to 8 mm, so that the volume of the reinforcing rib is reduced while ensuring that the reinforcing rib covers the weak part of the valve seat, thereby ensuring the effect of the reinforcing rib and reducing the production cost of the valve body.

[0013] Preferably, the width of the reinforcing rib is M, 8mm≤M≤9mm.

[0014] In the structure, the width of the reinforcing rib is greater than or equal to 8 mm and less than or equal to 9 mm, so that the volume of the reinforcing rib is reduced while ensuring that the reinforcing rib covers the weak parts of the valve seat, thereby reducing the production cost of the valve body while ensuring the effect of the reinforcing rib.

[0015] Preferably, the valve seat is provided with reinforcing ribs on both sides relative to the first plane, and the distance between two opposite sides of the two reinforcing ribs is L2, 16mm≤L2≤17mm.

[0016] In the structure, both sides of the valve seat relative to the first plane are integrally formed with reinforcing ribs, thereby further strengthening the strength of the valve body, reducing the risk of reducing the sealing performance of the stop valve due to deformation of the valve body due to excessive tightening torque, and improving the safety of the valve body. The distance between the two sides opposite to each other of the first reinforcing rib and the second reinforcing rib is greater than or equal to 16 mm and less than or equal to 17 mm, that is, the overall thickness of the reinforcing rib is greater than or equal to 16 mm and less than or equal to 17 mm, so that the volume of the reinforcing rib is reduced while ensuring the effect of the reinforcing rib, thereby reducing the production cost of the valve body.

[0017] Preferably, the reinforcing ribs are arranged in a trapezoidal shape, and the width of the reinforcing ribs decreases in a direction approaching the mounting seat.

[0018] In the structure, the reinforcing ribs are arranged in a trapezoidal shape, and their width gradually decreases in the direction approaching the mounting seat. Therefore, the width of the reinforcing ribs located at the weak points of the valve seat and the sealing mating parts of the valve body and the valve core is larger, while the width of other parts is smaller. This ensures the effect of the reinforcing ribs while reducing the volume of the reinforcing ribs, thereby reducing the production cost of the valve body.

[0019] A low-pressure stop valve comprises a valve core and a valve body, wherein the valve core is threadedly connected to the mounting hole and is used to open and close the air inlet hole, a connecting pipe is provided at one end of the valve seat close to the air inlet hole, a valve core is threadedly connected to the refrigerant hole, a valve core nut is threadedly connected to one end of the valve seat close to the refrigerant hole, and a cross-head nut is threadedly connected to one end of the valve seat close to the air outlet hole.

[0020] In the structure, the stop valve adopts a valve body with a reinforcing rib, which reduces the risk of reducing the sealing performance of the stop valve due to deformation of the valve body caused by excessive tightening torque, and improves the safety of the stop valve. At the same time, a valve core is installed in the refrigerant hole to facilitate the addition and discharge of refrigerant, which improves the convenience of the stop valve. A valve core nut is threadedly connected to one end of the refrigeration hole of the valve seat, and the valve core nut plays a secondary sealing role, which improves the sealing performance of the valve body, reduces the risk of refrigerant flowing out of the valve body from the refrigerant port when the stop valve is in use, and further improves the safety of the stop valve.

[0021] Preferably, one end of the valve seat close to the mounting hole opening is threadedly connected with a valve core cap.

[0022] In the structure, the valve core cap plays a role of secondary sealing, improves the sealing performance of the valve body, reduces the risk of refrigerant flowing out of the valve body from the installation hole when the stop valve is in use, and further improves the safety of the stop valve.

[0023] Preferably, a sealing ring is provided between the hole wall of the mounting hole and the valve core, a placement groove is provided on the circumferential side wall of the valve core, and the sealing ring is arranged in the placement groove.

[0024] In the structure, the sealing ring is made of elastic material. When the valve core is threadedly connected in the installation hole, the sealing ring is located between the wall of the installation hole and the wall of the placement groove. The wall of the installation hole and the wall of the placement groove apply pressure to the sealing ring. The sealing ring is elastically deformed under the force and maintains a tendency to reset, thereby improving the sealing performance of the connection between the valve core and the valve seat, reducing the risk of refrigerant flowing out of the valve body from the gap between the valve core and the wall of the installation hole, and further improving the safety of the stop valve.

[0025] Preferably, a retaining spring is provided between the hole wall of the mounting hole and the valve core, a mounting groove is provided on the hole wall of the mounting hole, the retaining spring is provided in the mounting groove, and the valve core is provided with an abutting surface that abuts and cooperates with the retaining spring.

[0026] In the structure, the retaining spring limits the moving path of the valve core. When the valve core is rotated to make it located at the extreme position of the moving path, the retaining spring abuts against the abutting surface of the valve core, thereby limiting the moving path of the valve core and preventing the valve core from flying out of the valve seat under the high-pressure refrigerant state, thereby improving the stability and safety of the stop valve.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Reduce the risk of valve body deformation caused by excessive tightening torque and improve the safety of valve body use;

[0029] 2. Reduce the volume of the valve body required to resist the same tightening torque, thereby reducing the production cost of the valve body;

[0030] 3. It reduces the risk of valve body deformation due to excessive tightening torque, which may reduce the sealing performance of the stop valve, and improves the safety of the stop valve.

[0031] 4. The installation of the valve core facilitates the addition and discharge of refrigerant, which improves the convenience of using the stop valve;

[0032] 5. It reduces the risk of accidental outflow of refrigerant from the valve body, improves the sealing performance of the stop valve, and improves the safety of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the cross-sectional structure of the valve seat of Example 1 of the first part of the present application;

[0034] Figure 2 It is a schematic diagram of the overall structure of Example 1 of the first part of this application;

[0035] Figure 3 It is a right view of the valve body structure of Example 2 of the first part of the present application;

[0036] Figure 4 It is a schematic diagram of the overall structure of Example 3 of the first part of this application.

[0037] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the second embodiment of the present application;

[0038] Figure 6 This is a bottom view of the overall structure of the second embodiment of the present application;

[0039] Figure 7 It is a schematic diagram of the retaining spring structure of the second embodiment of the present application.

[0040] Explanation of the accompanying drawings: 1. valve seat; 2. first axis; 3. second axis; 4. first plane; 5. end line; 6. valve core; 7. sealing ring; 8. retaining ring; 10. mounting seat; 11. air inlet hole; 12. mounting hole; 13. refrigerant hole; 14. air outlet hole; 15. reinforcing rib; 16. connecting pipe; 17. valve core nut; 18. cross head nut; 19. valve core cap; 61. placement groove; 62. abutment surface; 101. connecting hole; 121. mounting groove; 131. valve core; 151. semi-reinforcement rib. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] The first embodiment of the present application discloses a valve body.

[0043] Embodiment 1:

[0044] Embodiment 1 of the first part of the present application discloses a valve body.

[0045] Reference Figure 1 A new type of valve body with reinforcing ribs 15 includes a valve seat 1, the valve seat 1 is provided with an air inlet hole 11, a mounting hole 12, a refrigerant hole 13 and an air outlet hole 14, the air inlet hole 11, the mounting hole 12, the refrigerant hole 13 and the air outlet hole 14 are all connected to each other, the air inlet hole 11 and the mounting hole 12 are coaxially arranged with a first axis 2 as the central axis, the refrigerant hole 13 and the air outlet hole 14 are coaxially arranged with a second axis 3 as the central axis, the first axis 2 and the second axis 3 are vertically arranged and are both located on a first plane 4.

[0046] Reference Figure 1 and Figure 2The outer wall of the valve seat 1 is integrally formed with a reinforcing rib 15, which is located between the openings of the air inlet 11, the mounting hole 12, the refrigerant hole 13 and the air outlet 14. The reinforcing rib 15 includes two half reinforcing ribs 151 which are symmetrically arranged and distributed on the same side of the valve seat, and the symmetry planes of the two half reinforcing ribs 151 are arranged perpendicular to the first plane 4 and pass through the first axis 2.

[0047] Reference Figure 1 and Figure 2 , take the extension direction of the first axis 2 as the direction of the Z axis, take the extension direction of the second axis 3 as the direction of the Y axis, and take the axis direction perpendicular to the first plane 4 and intersecting the first axis 2 and the second axis 3 as the direction of the X axis, and establish a coordinate system with this X axis, Y axis, and Z axis.

[0048] The implementation principle of a valve body in the first embodiment of the present application is as follows:

[0049] When this valve body is used as a valve body in a stop valve, the air inlet hole 11, the refrigerant hole 13 and the air outlet hole 14 form a three-way structure, and the orifice end of the air inlet hole 11 of the valve seat 1 is connected to the outdoor unit of the air conditioner through a connecting pipe 16, and the orifice end of the air outlet hole 14 of the valve seat 1 is threadedly connected to the cross-head nut 18, and is connected to another connecting pipe through the cross-head nut 18, so as to achieve connection with the indoor unit of the air conditioner, wherein the valve core 6 for opening and closing the air inlet hole 11 is installed in the mounting hole 12, and when the stop valve needs to be closed, the valve core 6 is sealed with the hole wall of the air inlet hole 11, that is, the connecting part where the air inlet hole 11 of the valve seat 1 is connected with the refrigerant hole 13, the air outlet hole 14 and the mounting hole 12 is the sealing matching section of the valve body and the valve core 6.

[0050] When the orifice end of the air outlet hole 14 of the valve seat 1 is threadedly connected to the cross-head nut 18, that is, when a large tightening torque is applied to the valve body as a whole, the outer wall of the valve seat 1 is integrally formed with a reinforcing rib 15, and the reinforcing rib 15 strengthens the overall strength of the valve seat 1. At the same time, the reinforcing rib 15 is symmetrically arranged and located between the orifices of the air inlet hole 11, the mounting hole 12, the refrigerant hole 13 and the air outlet hole 14. The reinforcing rib 15 includes two half reinforcing ribs 151 that are symmetrically arranged and distributed on the same side of the valve seat 1. The two half reinforcing ribs 151 The symmetry plane of the two half reinforcing ribs 151 is arranged perpendicular to the first plane 4 and passes through the first axis 2, that is, the symmetry plane of the two half reinforcing ribs 151 is the XZ plane, so that the reinforcing rib 15 covers the connecting part of the air inlet hole 11 of the valve seat 1, even if the reinforcing rib 15 is located in the sealing matching section between the valve body and the valve core 6, that is, the reinforcing rib 15 is used to focus on strengthening the strength of the sealing matching part of the valve body with the valve core 6, thereby reducing the risk of reducing the sealing performance of the stop valve due to deformation of the valve body due to excessive tightening torque, and improving the safety of the valve body.

[0051] At the same time, the symmetry plane of the two half reinforcement ribs 151 is the XZ plane, so that the valve body is evenly stressed, further reducing the risk of deformation of the valve body due to stress, and also facilitating the processing of the valve body by the staff. There is no need to distinguish between the refrigerant port and the air outlet when processing the reinforcement rib 15, thereby improving the stability of the valve body and the convenience of processing.

[0052] In addition, reinforcing ribs 15 are used to increase the strength of key parts without increasing the overall thickness of the valve body to improve the strength of the valve body. Increasing the thickness of the valve body will cause the valve body to become larger and increase the production cost of the valve body. Therefore, the present application reduces the additional volume required for the valve body to resist the same tightening torque, thereby reducing the production cost of the valve body.

[0053] Embodiment 2:

[0054] Based on Example 1 of the first part of this application:

[0055] Reference Figure 2 The valve seat 1 is fixedly connected to a mounting seat 10 at one end near the air inlet hole 11. The mounting seat 10 is provided with a connecting hole 101 communicating with the air inlet hole 11 to facilitate the subsequent installation of the connecting pipe 16. The mounting seat 10 extends along an axial direction perpendicular to the first plane 4, and one end of the reinforcing rib 15 is fixedly connected to the mounting seat 10.

[0056] Reference Figure 2 The end surfaces of both ends of the reinforcing rib 15 are projected onto the first plane 4 to form two end lines 5, the second axis 3 is located between the two end lines 5, and the distance between the second axis 3 and the end line 5 away from the mounting seat 10 is L1, that is, L1 is the distance between the end surface of one end of the reinforcing rib away from the mounting seat and the second axis in the Z-axis direction, where L1 is 7 mm.

[0057] Reference Figure 2 The width direction of the reinforcing rib 15 is the extension direction of the Y axis, the width of the reinforcing rib 15 is M, and M is 8 mm.

[0058] Reference Figure 3 The valve seat 1 has the above-mentioned reinforcing ribs 15 integrally formed on both sides relative to the first plane 4. The distance between the two opposite sides of the two reinforcing ribs 15 is L2, that is, L2 is the maximum distance between the two side surfaces of the reinforcing rib perpendicular to the X-axis direction, that is, L2 is the overall thickness of the reinforcing rib, where L2 is 17 mm.

[0059] The implementation principle of a valve body in the first embodiment 2 of the present application is as follows:

[0060] The mounting seat 10 is installed on the valve seat 1 to facilitate the subsequent installation between the valve seat 1 and the connecting pipe 16 and the installation of the valve seat 1 as a whole. At the same time, one end of the reinforcing rib 15 is fixedly connected to the mounting seat 10. The mounting seat 10 can reduce the risk of deformation of the reinforcing rib 15, further improve the effect of the reinforcing rib 15 on increasing the strength of the valve body, reduce the risk of deformation of the valve body due to excessive tightening torque, and reduce the sealing performance of the stop valve, thereby improving the safety of the valve body.

[0061] At the same time, the portion where the air inlet hole 11, the mounting hole 12, the refrigerant hole 13 and the air outlet hole 14 are connected is a weak portion of the valve seat 1, wherein the end surfaces of both ends of the reinforcing rib 15 are projected onto the first plane 4 to form two end lines 5, the second axis 3 is located between the two end lines 5, and the second axis 3 is the center axis of the refrigerant hole 13 and the air outlet hole 14, so that the reinforcing rib 15 covers the weak portion of the valve seat 1, thereby increasing the strength of the weak portion of the valve seat 1, and at the same time, the valve seat 1 is integrally formed with reinforcing ribs 15 on both sides relative to the first plane 4, thereby further strengthening the strength of the valve body, reducing the risk of reducing the sealing performance of the stop valve due to deformation of the valve body due to excessive tightening torque, and improving the safety of the valve body.

[0062] The distance between the second axis 3 and the end line 5 away from the mounting seat 10 is 7 mm, the width of the reinforcing rib 15 is 8 mm, and the distance between the two opposite sides of the two reinforcing ribs 15 is 17 mm. This ensures that the reinforcing rib 15 covers the weak parts of the valve seat 1 without affecting the effect of enhancing the strength of the valve body, while reducing the volume of the reinforcing rib 15, thereby reducing the production cost of the valve body.

[0063] Embodiment 3:

[0064] The difference between Example 3 of the first part of the present application and Example 1 and Example 2 is that:

[0065] Reference Figure 4 The reinforcing ribs 15 are arranged in a trapezoidal shape, the width direction of the reinforcing ribs 15 is the extension direction of the Y axis, and the width of the reinforcing ribs 15 decreases step by step in the direction approaching the mounting seat 10.

[0066] The implementation principle of a valve body in the first embodiment 3 of the present application is as follows:

[0067] The reinforcing ribs 15 are arranged in a trapezoidal shape, and their width decreases step by step in the direction approaching the mounting seat 10. Therefore, the width of the reinforcing ribs 15 located at the weak parts of the valve seat 1 and the sealing matching parts of the valve body and the valve core 6 is relatively large. The weak parts of the valve seat 1 and the sealing matching parts of the valve body and the valve core 6 are the main force-bearing parts and key matching parts, while the width of other parts is relatively small. This reduces the volume of the reinforcing ribs 15 while ensuring that the effect of the reinforcing ribs 15 in preventing deformation of key parts is not affected, thereby reducing the production cost of the valve body.

[0068] The embodiment of the second part of the present application discloses a low-pressure stop valve.

[0069] Reference Figure 5 and Figure 6 A low-pressure stop valve includes a valve core 6 and a valve body. The valve core 6 is threadedly connected in the mounting hole 12 and is used to open and close the air inlet hole 11. A connecting pipe 16 is installed at one end of the valve seat 1 close to the orifice of the air inlet hole 11, and one end of the connecting pipe 16 is welded in the connecting hole 101. A valve core 131 is threadedly connected in the refrigerant hole 13, and a valve core nut 17 is threadedly connected at one end of the valve seat 1 close to the orifice of the refrigerant hole 13. A cross-head nut 18 is threadedly connected at one end of the valve seat 1 close to the orifice of the air outlet hole 14.

[0070] Reference Figure 5 and Figure 6 One end of the valve seat 1 close to the orifice of the mounting hole 12 is threadedly connected with a valve core cap 19.

[0071] Reference Figure 7 A sealing ring 7 is installed between the hole wall of the mounting hole 12 and the valve core 6. The sealing ring 7 is made of elastic material such as rubber. A placement groove 61 is opened on the circumferential side wall of the valve core 6, and the sealing ring 7 is installed in the placement groove 61.

[0072] Reference Figure 7 A retaining spring 8 is installed between the hole wall of the mounting hole 12 and the valve core 6. A mounting groove 121 is provided on the hole wall of the mounting hole 12. The retaining spring 8 is installed in the mounting groove 121. The valve core 6 is provided with an abutting surface 62 that abuts against the retaining spring 8.

[0073] The implementation principle of a low-pressure stop valve in the second embodiment of the present application is as follows:

[0074] The stop valve adopts a valve body equipped with a reinforcing rib 15, which reduces the risk of reducing the sealing performance of the stop valve due to deformation of the valve body caused by excessive tightening torque, and improves the safety of the stop valve.

[0075] At the same time, a valve core 131 is installed in the refrigerant hole 13, so as to facilitate the addition and discharge of refrigerant, thereby improving the convenience of using the stop valve. A valve core nut 17 is threadedly connected to one end of the refrigeration hole of the valve seat 1. The valve core nut 17 plays a secondary sealing role, improves the sealing of the valve body, reduces the risk of refrigerant flowing out of the valve body from the refrigerant port when the stop valve is in use, and further improves the safety of the stop valve.

[0076] The valve core cap 19 plays a role of secondary sealing, improves the sealing performance of the valve body, reduces the risk of refrigerant flowing out of the valve body from the orifice of the mounting hole 12 when the stop valve is in use, and further improves the safety of the stop valve.

[0077] The sealing ring 7 is made of elastic materials such as rubber. When the valve core 6 is threadedly connected in the mounting hole 12, the sealing ring 7 is located between the hole wall of the mounting hole 12 and the groove wall of the placement groove 61. The hole wall of the mounting hole 12 and the groove wall of the placement groove 61 apply pressure to the sealing ring 7. The sealing ring 7 is elastically deformed under the force and maintains a tendency to reset, thereby improving the sealing performance of the connection between the valve core 6 and the valve seat 1, reducing the risk of refrigerant flowing out of the valve body from the gap between the valve core 6 and the hole wall of the mounting hole 12, and further improving the safety of the stop valve.

[0078] The retaining spring 8 limits the moving path of the valve core 6. When the valve core 6 is rotated to make it located at the extreme position of the moving path, the retaining spring 8 abuts against the abutting surface 62 of the valve core 6, thereby limiting the moving path of the valve core 6 and preventing the valve core 6 from flying out of the valve seat 1 under the refrigerant high pressure state, thereby improving the stability and safety of the stop valve.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve body, characterized in that: The invention comprises a valve seat (1), wherein the valve seat (1) is provided with an air inlet hole (11), a mounting hole (12), a refrigerant hole (13) and an air outlet hole (14), wherein the air inlet hole (11) and the mounting hole (12) are coaxially arranged with a first axis (2) as the central axis, the refrigerant hole (13) and the air outlet hole (14) are coaxially arranged with a second axis (3) as the central axis, the first axis (2) and the second axis (3) are arranged crosswise and are both located on a first plane (4), and the The outer wall of the valve seat (1) is provided with a reinforcing rib (15), the reinforcing rib (15) being located between the openings of the air inlet hole (11), the mounting hole (12), the refrigerant hole (13) and the air outlet hole (14), the reinforcing rib (15) comprising two half reinforcing ribs (151) symmetrically arranged and distributed on the same side of the valve seat (1), the symmetry planes of the two half reinforcing ribs (151) being arranged perpendicular to the first plane (4) and passing through the first axis (2).

2. A valve body according to claim 1, characterized in that: A mounting seat (10) is provided at one end of the valve seat (1) close to the opening of the air inlet hole (11); the mounting seat (10) extends in an axial direction perpendicular to the first plane (4); and one end of the reinforcing rib (15) is provided on the mounting seat (10).

3. A valve body according to claim 2, characterized in that: The end surfaces of both ends of the reinforcing rib (15) are projected onto the first plane (4) to form two end lines (5), the second axis (3) is located between the two end lines (5), and the distance between the second axis (3) and the end line (5) away from the mounting seat (10) is L1, 6mm≤L1≤8mm.

4. A valve body according to claim 1, characterized in that: The width of the reinforcing rib (15) is M, 8mm≤M≤9mm.

5. A valve body according to claim 1, characterized in that: The valve seat (1) is provided with reinforcing ribs (15) on both sides relative to the first plane (4), and the distance between the two opposite sides of the two reinforcing ribs (15) is L2, 16mm≤L2≤17mm.

6. A valve body according to claim 2, characterized in that: The reinforcing rib (15) is arranged in a trapezoidal shape, and the width of the reinforcing rib (15) decreases gradually in a direction approaching the mounting seat (10).

7. A low-pressure stop valve, characterized by: It comprises a valve core (6) and a valve body as claimed in any one of claims 1 to 6, wherein the valve core (6) is threadedly connected to the mounting hole (12) and is used to open and close the air inlet hole (11), a connecting pipe (16) is provided at one end of the valve seat (1) close to the opening of the air inlet hole (11), a valve core (131) is threadedly connected to the refrigerant hole (13), a valve core nut (17) is threadedly connected to one end of the valve seat (1) close to the opening of the refrigerant hole (13), and a cross-head nut (18) is threadedly connected to one end of the valve seat (1) close to the opening of the air outlet hole (14).

8. A low-pressure stop valve according to claim 7, characterized in that: One end of the valve seat (1) close to the opening of the mounting hole (12) is threadedly connected with a valve core cap (19).

9. A low-pressure stop valve according to claim 7, characterized in that: A sealing ring (7) is provided between the hole wall of the mounting hole (12) and the valve core (6), a placement groove (61) is provided on the circumferential side wall of the valve core (6), and the sealing ring (7) is arranged in the placement groove (61).

10. A low-pressure stop valve according to claim 7, characterized in that: A retaining spring (8) is provided between the hole wall of the mounting hole (12) and the valve core (6), a mounting groove (121) is provided on the hole wall of the mounting hole (12), the retaining spring (8) is arranged in the mounting groove (121), and the valve core (6) is provided with a contact surface (62) that contacts and cooperates with the retaining spring (8).

Images