Multi-way valve reversing valve

Abstract

The multi-way valve reversing valve comprises a valve body and a one-way valve assembly, the valve body is provided with a cavity and a mounting groove communicated with the cavity, and the one-way valve assembly is mounted in the mounting groove; the one-way valve assembly comprises a valve sleeve with a valve cavity, the valve sleeve is provided with an oil inlet channel and an oil outlet channel which are communicated with the valve cavity, the end, away from the valve cavity, of the oil inlet channel is communicated with the cavity of the valve body, and the end, away from the valve cavity, of the oil outlet channel is communicated with the liquid channel of the valve body. The steel ball blocks a connecting port of the oil inlet passage and the valve cavity under the action of gravity or countercurrent liquid; and the liquid in the cavity pushes the steel ball to leave the connecting port of the oil inlet passage and the valve cavity in the process of flowing towards the one-way valve assembly. According to the multi-way valve reversing valve, due to the fact that the one-way valve assembly is simple in internal structure, small in machining process difficulty and good in sealing performance, friction generated when oil passes through the one-way valve assembly can be effectively reduced, and then pressure loss is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of hydraulic valve, more specifically, the present disclosure relates to a multi-way valve reversing valve. BACKGROUND

[0002] In the prior art, the check valve applied in the engineering multi-way valve usually needs to realize the check valve function through a pressure compensation valve core containing a spring and the like.

[0003] However, when the function of the check valve is realized by using the spring force, there is a large pressure loss in the passage between the oil inlet and the working oil chamber. In addition, such a pressure compensation valve core also has the problems of complex structure, high processing difficulty and high cost in the processing process. When multiple reversing valves are all equipped with the above-mentioned check valve and simultaneously supply oil to the same oil cylinder through these check valves, due to the pressure loss of the pressure compensation valve core in the multi-way valve reversing valve, the final output flow cannot meet the flow demand of the load, thereby causing low system efficiency and slow response speed, and in the high load working condition, the problem of insufficient oil supply is also prone to occur. CONTENT OF THE INVENTION

[0004] Therefore, the present disclosure provides a multi-way valve reversing valve to solve the technical defects in the prior art.

[0005] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0006] The present disclosure provides a multi-way valve reversing valve, comprising:

[0007] a valve body provided with a chamber and a mounting groove in communication with the chamber;

[0008] a check valve assembly configured to be installed in the mounting groove; the check valve assembly comprises a valve sleeve with a valve cavity, the valve sleeve is provided with an oil inlet passage and an oil outlet passage in communication with the valve cavity, respectively; wherein one end of the oil inlet passage away from the valve cavity is configured to communicate with the chamber of the valve body, and one end of the oil outlet passage away from the valve cavity is configured to communicate with the liquid passage of the valve body;

[0009] wherein a steel ball is arranged in the valve cavity of the valve sleeve, the steel ball is configured to block the connection port of the oil inlet passage and the valve cavity under the action of gravity or counter-flow liquid; the liquid in the chamber is configured to push the steel ball away from the connection port of the oil inlet passage and the valve cavity during the flow in the direction of the check valve assembly.

[0010] In one embodiment of the present disclosure, the oil outlet passage is configured to extend radially outward along the valve sleeve to form an oil outlet on the side wall of the valve sleeve; the oil outlet passage is provided with at least two, and the at least two oil outlet passages are configured to be uniformly distributed in the circumferential direction of the valve sleeve, and the liquid flowing from the oil inlet passage is configured to flow out of each of the oil outlet passages.

[0011] In one embodiment of the present disclosure, a ring-shaped oil outlet groove is provided on the side wall of the valve sleeve at a position corresponding to the oil outlet; the liquid flowing out of each oil outlet is configured to flow to the liquid passage of the valve body through the oil outlet groove.

[0012] In one embodiment of the present disclosure, the one-way valve assembly further comprises a dam in the oil inlet passage, the dam having a first opening and a second opening, wherein the diameter of the first opening is smaller than that of the second opening; wherein the first opening is located at one end close to the valve cavity, and the second opening is located at one end away from the valve cavity, and the dam is configured to slow down the liquid flowing therethrough.

[0013] In one embodiment of the present disclosure, the aperture of the first opening is 1.2 mm.

[0014] In one embodiment of the present disclosure, the oil inlet passage is configured to extend vertically upward from the bottom of the one-way valve assembly to communicate with the valve cavity, and the oil outlet passage is configured to communicate with the valve cavity in the horizontal direction, wherein the oil inlet passage and the oil outlet passage are arranged vertically.

[0015] In one embodiment of the present disclosure, the top of the one-way valve assembly is provided with a counterbore extending downward to communicate with the valve cavity, and a screw plug is fixedly installed in the counterbore, and the screw plug is configured to block the counterbore.

[0016] In one embodiment of the present disclosure, when the steel ball blocks the oil inlet passage under the action of gravity, the distance between the end of the screw plug close to the valve cavity and the steel ball is 0.3 mm.

[0017] In one embodiment of the present disclosure, the diameter of the oil inlet passage is 4 mm.

[0018] In one embodiment of the present disclosure, the one-way valve assembly is configured to be interference fit with the mounting groove.

[0019] The multi-way valve reversing valve provided by the present disclosure simplifies the internal structure of the check valve assembly, increases the damping on the oil inlet passage, effectively reduces the flow speed of the oil entering the check valve, further reduces the vibration caused by the movement of the oil, ensures the accurate control of the valve outlet pressure and flow, reduces the impact of the oil on the internal components of the check valve, and reduces the precision requirement of the check valve assembly on the valve body during the process, thereby reducing the processing difficulty, and the interference fit assembly can effectively reduce the pressure loss in the multi-way valve reversing valve, thereby meeting the flow demand of the load connected to the multi-way valve reversing valve.

[0020] Other features of the present disclosure and its advantages will become apparent in the following detailed description of exemplary embodiments thereof, from the drawings and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a multi-way valve reversing valve provided by an embodiment of the present disclosure;

[0022] Figure 2 is a structural schematic diagram of a check valve assembly in a multi-way valve reversing valve provided by an embodiment of the present disclosure;

[0023] Figure 3 is a pressure loss curve of the check valve assembly provided by an embodiment of the present disclosure.

[0024] 1-valve body; 2-check valve assembly; 3-chamber; 4-mounting groove; 5-valve sleeve; 6-valve cavity; 7-oil outlet passage; 8-oil inlet passage; 9-steel ball; 10-oil outlet; 11-damping; 111-first opening; 112-second opening; 12-counterbore; 13-screw boss. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless otherwise specifically stated.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the present disclosure and its applications or uses.

[0027] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and devices can be viewed as part of the specification and may

[0028] Note that similar reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0029] The specific embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0030] In this document, "upper", "lower", "front", "back", "left", "right", and the like are used only to indicate relative positional relationships among the relevant parts, and do not limit the absolute positions of the relevant parts.

[0031] In this document, "first", "second", and the like are used only to distinguish from each other, and do not represent importance and order, and the premise of each other.

[0032] In this document, "equal", "same", and the like are not strictly limited in the mathematical and / or geometric sense, but also include errors allowed by those skilled in the art in manufacturing or use, etc.

[0033] The present disclosure relates to a multi-way valve reversing valve, which comprises a valve body and a one-way valve assembly, the valve body is provided with a cavity and a mounting groove in communication with the cavity, and the one-way valve assembly is installed in the mounting groove; the one-way valve assembly comprises a valve sleeve with a valve cavity, and an oil inlet passage and an oil outlet passage in communication with the valve cavity are arranged on the valve sleeve, one end of the oil inlet passage away from the valve cavity is in communication with the cavity of the valve body, and one end of the oil outlet passage away from the valve cavity is in communication with a liquid passage of the valve body, wherein a steel ball is arranged in the valve cavity of the valve sleeve, and the steel ball blocks the connection port of the oil inlet passage and the valve cavity under the action of gravity or counter-flowing liquid; the liquid in the cavity pushes the steel ball away from the connection port of the oil inlet passage and the valve cavity during the process of flowing towards the one-way valve assembly.

[0034] The multi-way valve reversing valve provided by the present disclosure has simple internal structure of the one-way valve assembly, small processing difficulty, good sealing performance, can effectively reduce the friction of oil passing through the one-way valve assembly and thus reduce the pressure loss, so as to meet the flow demand of the load connected by the multi-way valve reversing valve.

[0035] For the convenience of understanding, the specific structure of the multi-way valve reversing valve of the present disclosure and its working principle will be described in detail below with reference to Figures 1 to 3 one embodiment.

[0036] As shown in Figure 1 and Figure 2 , the present disclosure provides a multi-way valve reversing valve, which comprises a valve body 1 and a one-way valve assembly 2, the valve body 1 is provided with a cavity 3 and a mounting groove 4 in communication with the cavity 3, and the one-way valve assembly 2 is installed in the mounting groove 4; the one-way valve assembly 2 comprises a valve sleeve 5 with a valve cavity 6, and an oil inlet passage 8 and an oil outlet passage 7 in communication with the valve cavity 6 are arranged on the valve sleeve 5; wherein one end of the oil inlet passage 8 away from the valve cavity 6 is in communication with the cavity 3 of the valve body 1, and one end of the oil outlet passage 7 away from the valve cavity 6 is in communication with a liquid passage of the valve body 1.

[0037] Among them, a steel ball 9 is arranged in the valve cavity 6 of the valve sleeve 5, and the steel ball 9 blocks the connection port between the oil inlet passage 8 and the valve cavity 6 under the action of gravity or countercurrent liquid; the liquid in the chamber 3 pushes the steel ball 9 to leave the connection port between the oil inlet passage 8 and the valve cavity 6 during the process of flowing toward the one-way valve assembly 2.

[0038] Specifically, the present disclosure provides a multi-way valve reversing valve, including a valve body 1 and a one-way valve assembly 2. One or more chambers 3 are provided inside the valve body 1. These chambers 3 are used to accommodate hydraulic oil and serve as channels for liquid flow. The valve body 1 is provided with an installation groove 4 connected to the chamber 3 for installing the one-way valve assembly 2. The one-way valve assembly 2 is firmly fixed in the valve body 1 by an interference fit and forms a good seal and connection with the chamber 3. The one-way valve assembly 2 includes a valve sleeve 5 with a valve cavity 6. The valve sleeve 5 is a precision-machined component with a valve cavity 6 inside for accommodating opening and closing elements such as a steel ball 9. An oil inlet passage 8 is provided on the valve sleeve 5. One end of the passage is connected to the valve cavity 6, and the other end is connected to the chamber 3 of the valve body 1. The function of the oil inlet passage 8 is to guide the hydraulic oil from the chamber 3 of the valve body 1 into the valve cavity 6. The valve sleeve 5 is also provided with an oil outlet passage 7. One end of the passage is connected to the valve cavity 6, and the other end is connected to the liquid passage of the valve body 1. The function of the oil outlet passage 7 is to guide the hydraulic oil to flow out of the valve cavity 6, enter the liquid passage of the valve body 1, and finally reach the target cylinder or other hydraulic equipment.

[0039] Furthermore, the working principle of the one-way valve assembly 2 is that when no hydraulic oil flows in or the hydraulic oil flows back from the oil outlet passage 7, the steel ball 9 blocks the connection port between the oil inlet passage 8 and the valve cavity 6 under the action of gravity or countercurrent liquid, thereby preventing the liquid from flowing back; when the liquid in the chamber 3 flows toward the one-way valve assembly 2, the pressure of the liquid pushes the steel ball 9 away from the connection port between the oil inlet passage 8 and the valve cavity 6, thereby allowing the liquid to enter the valve cavity 6 through the oil inlet passage 8, and then flow out through the oil outlet passage 7.

[0040] The one-way valve assembly 2 disclosed herein eliminates the traditional spring and pressure-compensating valve core and instead utilizes a steel ball 9 as the opening and closing element, resulting in a simpler structure. This reduces the number of components and thus manufacturing costs. The steel ball 9 automatically opens and closes under the action of liquid pressure, reducing pressure loss between the oil inlet and the working oil chamber and increasing the system's effective output pressure and flow rate. Therefore, the multi-way valve reversing valve provided herein is suitable for use in multi-way valve systems for high-flow dynamic tamping machines and other engineering machinery, ensuring that each cylinder maintains stable flow and pressure during multi-tasking operations.

[0041] like Figure 2As shown, in one embodiment of the present disclosure, the oil outlet passages 7 extend radially outward along the side wall of the valve sleeve 5 to form oil outlet ports 10 on the side wall of the valve sleeve 5; the oil outlet passages 7 are provided in at least two, and the at least two oil outlet passages 7 are uniformly distributed in the circumferential direction of the valve sleeve 5, and the liquid flowing from the oil inlet passage 8 is configured to flow out from each of the oil outlet passages 7.

[0042] Specifically, the oil outlet passages 7 extend radially outward along the valve sleeve 5 to ensure that the liquid can flow out uniformly from the side wall of the valve sleeve 5, and this design reduces the liquid remaining inside the valve sleeve 5 and improves the flow efficiency of the liquid. The oil outlet passages 7 are provided in at least two, and the at least two oil outlet passages 7 are uniformly distributed in the circumferential direction of the valve sleeve 5, and this uniform distribution design allows the liquid to flow out in multiple directions, and this multi-point outflow design further reduces local pressure loss and improves the overall efficiency of the system.

[0043] As shown in FIG. 1, Figure 2 As shown, in one embodiment of the present disclosure, a ring-shaped oil outlet groove is arranged on the side wall of the valve sleeve 5 corresponding to the position of the oil outlet port 10; the liquid flowing out from each of the oil outlet ports 10 flows to the liquid passage of the valve body 1 through the oil outlet groove.

[0044] Specifically, in the structure of the valve sleeve 5, in order to ensure that the liquid can be uniformly and effectively delivered to the target oil cylinder or other hydraulic equipment, a ring-shaped oil outlet groove (not shown in the figure) is designed on the side wall of the valve sleeve 5 corresponding to the position of the oil outlet port 10. This design not only increases the smoothness of liquid flow, but also greatly improves the stability and efficiency of the system. When the liquid flows out from each of the oil outlet ports 10, it will first be guided into this ring-shaped oil outlet groove, and these liquids will flow uniformly along the path of the oil outlet groove to the liquid passage in the valve body 1. The oil outlet groove helps to reduce the resistance of the liquid flow and ensures efficient transmission of the liquid.

[0045] As shown in FIG. 1, Figure 2 As shown, in one embodiment of the present disclosure, the one-way valve assembly 2 further comprises a damper 11 located in the oil inlet passage 8, the damper 11 having a first opening 111 and a second opening 112, wherein the diameter of the first opening 111 is smaller than that of the second opening 112; wherein the first opening 111 is located at one end close to the valve cavity 6, and the second opening 112 is located at one end away from the valve cavity 6, and the damper 11 is used to slow down the liquid flowing therethrough.

[0046] Specifically, the damper 11 is fixedly installed in the oil inlet passage 8 to slow down the liquid flowing therethrough. The damper 11 has a first opening 111 and a second opening 112. The diameter of the first opening 111 is smaller than that of the second opening 112. The first opening 111 is located at one end close to the valve cavity 6, and the second opening 112 is located at one end away from the valve cavity 6. The design of the damper 11 is such that the liquid first enters the damper 11 from the second opening 112 with a larger diameter and then enters the valve cavity 6 through the first opening 111 with a smaller diameter when flowing through the oil inlet passage 8. This design can slow down the liquid flowing therethrough, reduce the impact force of the liquid entering the valve cavity 6, and thus improve the stability of the system. Through the slowing effect of the damper 11, the pressure fluctuation of the liquid entering the valve cavity 6 can be reduced, thereby reducing system vibration and making the flow state of the output liquid more stable.

[0047] As shown in Figure 2 and Figure 3 In one embodiment of the present disclosure, the aperture of the first opening 111 is 1.2 mm.

[0048] Specifically, the key of the damper 11 is that the present disclosure is verified through repeated tests, and it is concluded that when the aperture of the damper 11 is 1.2 mm, the pressure loss can be minimized while ensuring its normal function. Figure 3 The pressure loss curves of the traditional pressure compensation valve core and the one-way valve assembly 2 of the present disclosure at different flow rates are given. From the curves, it can be concluded that the greater the flow rate, the greater the pressure loss of the system. By comparing the two curves, it is obvious that the pressure loss of the one-way valve assembly 2 of the present disclosure is significantly reduced compared with the traditional pressure compensation valve core at the same flow rate. Therefore, when the one-way valve assembly 2 of the present disclosure is used with the valve body 1, it can effectively alleviate the pressure loss and is more suitable for the multi-way valve system of a large-flow compactor and other construction machinery, ensuring stable flow rate and pressure of each oil cylinder in multi-task operation.

[0049] In one embodiment of the present disclosure, the oil inlet passage 8 extends vertically upward from the bottom of the one-way valve assembly 2 to the communication valve cavity 6, and the oil outlet passage 7 communicates with the valve cavity 6 in the horizontal direction. The oil inlet passage 8 and the oil outlet passage 7 are arranged vertically.

[0050] Specifically, the oil inlet passage 8 in the vertical direction is arranged to enable the liquid to be preliminarily decelerated under the action of gravity before entering the one-way valve assembly 2, so that the liquid can enter the valve cavity 6 more smoothly when entering by relying on the system pressure. The oil outlet passage 7 in the horizontal direction ensures that the liquid can flow smoothly and uniformly when leaving the valve cavity 6, avoiding turbulence and pressure fluctuations caused by sudden changes in direction. The vertical arrangement of the oil inlet passage 8 and the oil outlet passage 7 helps to reduce the impact force when the liquid enters and leaves, thereby reducing noise and vibration during system operation and improving the stability and service life of the system. Such a layout design makes the one-way valve assembly 2 more convenient to install and maintain, and the clear directionality of the oil inlet passage 8 and the oil outlet passage 7 makes the connection pipeline and inspection and maintenance work simpler and more straightforward.

[0051] As shown in Figure 2 , in one embodiment of the present disclosure, the top of the one-way valve assembly 2 is provided with a counterbore 12 extending downward to communicate with the valve cavity 6, and a screw plug 13 is fixedly installed in the counterbore 12, which is used to block the counterbore 12.

[0052] Specifically, the counterbore 12 is located at the top of the one-way valve assembly 2 and extends downward from the top to communicate with the valve cavity 6. The counterbore 12 is generally cylindrical in shape, with a depth of 8.3 mm. The bottom of the counterbore 12 communicates with the valve cavity 6, and the diameter of the counterbore 12 is slightly larger than the diameter of the steel ball 9. In order to facilitate the smooth placement of the steel ball 9 into the valve cavity 6, the screw plug 13 is installed in the counterbore 12 in an interference fit after the steel ball 9 is placed, thereby sealing the top of the valve sleeve 5 and preventing fluid leakage from the top.

[0053] As shown in Figure 2 , in one embodiment of the present disclosure, when the steel ball 9 blocks the oil inlet passage 8 under the action of gravity, the distance between the end of the screw plug 13 close to the valve cavity 6 and the steel ball 9 is 0.3 mm.

[0054] Specifically, the 0.3 mm spacing allows the steel ball 9 to move rapidly under the action of fluid pressure, achieving rapid opening and closing. This design helps to improve the response speed of the one-way valve assembly 2, ensuring that the system can be quickly opened or closed when needed. The small spacing also reduces the impact of the steel ball 9 on the screw plug 13 during opening and closing, thereby reducing vibration and noise and improving the operational stability of the system.

[0055] As shown in Figure 2 , in one embodiment of the present disclosure, the diameter of the oil inlet passage 8 is 4 mm.

[0056] Specifically, through multiple tests, different diameters of the oil inlet passage 8 and the steel ball 9 combination are compared, and key parameters such as flow rate, pressure loss, sealing performance, etc. in each group of experiments are recorded. It is found that the combination of 4mm diameter of the oil inlet passage 8 and 6mm diameter of the steel ball 9 performs best in multiple indicators, especially in pressure loss and sealing performance, achieving the best balance.

[0057] As shown in the drawings, Figure 2 In one embodiment of the present disclosure, the one-way valve assembly 2 is interference fit with the mounting groove 4.

[0058] Specifically, the outer circle size of the one-way valve assembly 2 is slightly larger than the inner diameter of the mounting groove 4, and the tolerance fit of the outer circle design R6 ensures that it can be interference fit into the multi-way valve reversing valve. For the outer circle design, the specific numerical value of the R6 tolerance grade can be found in the ISO286-2 standard. In the specific assembly, the cold mounting method can be used, that is, the one-way valve assembly 2 is cooled to low temperature to shrink, and then quickly inserted into the mounting groove 4 of the valve body 1. After the temperature recovers, the one-way valve assembly 2 expands to form an interference fit. Or it can also use the hot mounting method, that is, the multi-way valve reversing valve body 1 is heated to high temperature to expand the inner hole, and then the one-way valve assembly 2 is inserted. After the temperature recovers, the inner hole shrinks to form an interference fit. Or when the interference amount is small, the pressing method can be used, that is, using special tools or equipment, the one-way valve assembly 2 is directly pressed into the mounting groove 4 of the valve body 1. The tight connection formed by the interference fit can effectively prevent loosening caused by vibration or impact, ensuring the long-term stability of the connection, and the interference fit can form a nearly seamless contact surface, which can effectively prevent liquid leakage.

[0059] The multi-way valve reversing valve provided by the present disclosure simplifies the internal structure of the one-way valve assembly 2, increases the damping 11 on the oil inlet passage 8, thereby effectively reducing the flow speed of the oil entering the one-way valve, and further reducing the vibration caused by the movement of the oil, ensuring the accurate control of the valve outlet pressure and flow, reducing the impact of the oil on the internal components of the one-way valve, and reducing the precision requirement of the one-way valve assembly 2 for the valve body 1 during the process of processing, thereby reducing the processing difficulty, and the interference fit assembly can effectively reduce the pressure loss in the multi-way valve reversing valve, thereby meeting the flow demand of the connected load of the multi-way valve reversing valve.

[0060] It should be noted that for the foregoing method embodiments, in order to facilitate description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the action sequence described, because according to the present disclosure, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present disclosure.

[0061] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0062] The above disclosed preferred embodiments of the present disclosure are only used to help explain the present disclosure. The alternative embodiments do not describe all the details and do not limit the present disclosure to the specific embodiments described. Obviously, according to the content of the present disclosure, many modifications and changes can be made. The present disclosure selects and describes these embodiments in order to better explain the principles and practical applications of the present disclosure, so that those skilled in the art can well understand and utilize the present disclosure. The present disclosure is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-way valve reversing valve, characterized in that: include: A valve body (1), the valve body (1) being provided with a chamber (3) and a mounting groove (4) communicating with the chamber (3); A one-way valve assembly (2), the one-way valve assembly (2) being configured to be mounted in the mounting groove (4); the one-way valve assembly (2) comprising a valve sleeve (5) having a valve cavity (6), the valve sleeve (5) being provided with an oil inlet passage (8) and an oil outlet passage (7) respectively communicating with the valve cavity (6); wherein an end of the oil inlet passage (8) away from the valve cavity (6) is configured to communicate with the chamber (3) of the valve body (1), and an end of the oil outlet passage (7) away from the valve cavity (6) is configured to communicate with the liquid passage of the valve body (1); A steel ball (9) is provided in the valve cavity (6) of the valve sleeve (5), and the steel ball (9) is configured to block the connection between the oil inlet passage (8) and the valve cavity (6) under the action of gravity or countercurrent liquid; and the liquid in the chamber (3) is configured to push the steel ball (9) away from the connection between the oil inlet passage (8) and the valve cavity (6) during the process of flowing toward the one-way valve assembly (2).

2. The multi-way valve reversing valve according to claim 1, characterized in that: The oil outlet passage (7) is configured to extend radially outwardly of the valve sleeve (5) to form an oil outlet (10) on the side wall of the valve sleeve (5); at least two oil outlet passages (7) are provided, and the at least two oil outlet passages (7) are configured to be evenly distributed in the circumferential direction of the valve sleeve (5), and the liquid flowing in from the oil inlet passage (8) is configured to flow out from each of the oil outlet passages (7).

3. The multi-way valve reversing valve according to claim 2, characterized in that: An annular oil outlet groove is provided on the side wall of the valve sleeve (5) at a position corresponding to the oil outlet (10); the liquid flowing out of each oil outlet (10) is configured to flow through the oil outlet groove to the liquid passage of the valve body (1).

4. The multi-way valve reversing valve according to claim 1, characterized in that: The one-way valve assembly (2) further comprises a damper (11) located in the oil inlet passage (8), the damper (11) having a first opening (111) and a second opening (112), wherein the diameter of the first opening (111) is smaller than that of the second opening (112); wherein the first opening (111) is located at an end close to the valve cavity (6), and the second opening (112) is located at an end away from the valve cavity (6), and the damper (11) is configured to decelerate the liquid flowing therethrough.

5. The multi-way valve reversing valve according to claim 4, characterized in that: The aperture of the first opening (111) is 1.2 mm.

6. The multi-way valve according to claim 1, characterized in that: The oil inlet passage (8) is constructed to extend vertically upward from the bottom of the one-way valve assembly (2) to communicate with the valve cavity (6), and the oil outlet passage (7) is constructed to communicate with the valve cavity (6) in a horizontal direction, wherein the oil inlet passage (8) and the oil outlet passage (7) are arranged vertically.

7. The multi-way valve according to claim 1, characterized in that: A countersunk hole (12) is provided at the top of the one-way valve assembly (2), and the countersunk hole (12) extends downward to communicate with the valve cavity (6). A screw plug (13) is fixedly installed in the countersunk hole (12), and the screw plug (13) is configured to seal the countersunk hole (12).

8. The multi-way reversing valve according to claim 7, characterized in that: When the steel ball (9) blocks the oil inlet passage (8) under the action of gravity, the distance between the end of the screw plug (13) close to the valve cavity (6) and the steel ball (9) is 0.3 mm.

9. The multi-way reversing valve according to claim 8, characterized in that: The diameter of the oil inlet passage (8) is 4 mm.

10. The multi-way reversing valve according to claim 1, characterized in that: The one-way valve assembly (2) is constructed to be interference-fitted with the mounting groove (4).

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