Multifunctional reversing valve

Abstract

The invention relates to the technical field of valves, in particular to a multifunctional reversing valve which comprises a valve seat, a valve element and a rotating piece, the valve seat is provided with a mounting cavity and four connecting ports extending outwards in the radial direction of the mounting cavity, the valve element is rotationally arranged in the valve seat and provided with a direct flow channel extending in the radial direction of the valve element, and the rotating piece is arranged in the valve seat. The valve seat is provided with a straight flow channel and two arc flow channels which are symmetrically arranged relative to the straight flow channel, the rotating piece is rotationally arranged on the valve seat and connected with the valve element, and when one arc flow channel is communicated with two connecting ports which are perpendicular to each other, the other arc flow channel is communicated with the other two connecting ports which are perpendicular to each other. The reversing valve can be switched among a plurality of pipelines, communication of different pipelines can be achieved according to needs, and the reversing valve is simple in structure and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a multifunctional reversing valve. Background Art

[0002] A multi-pipeline system usually requires a reversing valve to switch between the pipelines so that different pipelines can be connected as needed. However, the current reversing valve functional unit can usually only switch between two pipelines. When multiple reversing modes are required, multiple reversing valves have to be used, which is extremely inconvenient to use. Summary of the invention

[0003] In view of the above problems, a multifunctional reversing valve is provided, which solves... (Problem 1 in the background technology) by...

[0004] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0005] A multifunctional reversing valve comprises a valve seat, a valve core and a rotating member, wherein the valve seat has an installation cavity and four connecting ports extending radially and outwardly from the installation cavity, the valve core is rotatably arranged in the valve seat, the valve core has a direct current channel extending radially thereof, and two arc flow channels symmetrically arranged about the direct current channel, the rotating member is rotatably arranged on the valve seat and connected to the valve core, and when one arc flow channel conducts two mutually perpendicular connecting ports, the other arc flow channel conducts the other two perpendicular connecting ports.

[0006] Preferably, the valve core includes a main core and a secondary core, the main core is cylindrically arranged in the installation cavity for coaxial rotation, arc-shaped grooves are symmetrically arranged on both sides of the circumferential surface of the main core, the direct current channel is located between the two arc-shaped grooves, the arc-shaped groove has a first semi-arc groove extending along its arc surface, the secondary core is clamped in the arc-shaped groove, and the inner side of the secondary core is provided with a second semi-arc groove forming an arc flow channel with the first semi-arc groove.

[0007] Preferably, the upper and lower parts of the circumferential surface of the main core are provided with arc grooves coaxial therewith, the top of the main core is connected to the rotating member, and the upper and lower parts of the outer side of the auxiliary core are provided with stepped grooves connected to the arc grooves, and the valve core also includes a rubber ring, which is arranged on the arc groove and the stepped groove and has an interference fit with the mounting cavity.

[0008] Preferably, the valve seat includes a lower valve body and an upper valve body, the top end of the lower valve body has a mounting groove, the upper valve body is arranged on the lower valve body to form a mounting cavity with the mounting groove, the connecting port is located on the lower valve body, and the rotating member passes through the upper valve body and is connected to the valve core.

[0009] Preferably, the reversing valve also includes a locking assembly, which is arranged in the upper valve body. The locking assembly locks the rotating member in a releasable manner. When the rotating member is pressed down, the locking assembly contacts and locks the rotating member, so that the rotating member can drive the valve core to rotate in the installation cavity.

[0010] Preferably, the rotating member includes an outer rotating member and an inner rotating member, the inner rotating member passes through the upper valve body and slidably cooperates with the upper valve body, the outer rotating member is arranged at the top end of the inner rotating member, and the top end of the valve core is provided with a first special-shaped column that can slidably cooperate with the inner rotating member and transmit torque, the locking assembly locking block, the first elastic member and the second elastic member, the locking block is arranged in the upper valve body along the radial direction of the inner rotating member, the locking block has an inclined surface inclined upward, and a matching groove for inserting the locking block is provided on the circumferential surface of the inner rotating member, the first elastic member is arranged on the inner side of the locking block, and the locking block always abuts against the inner rotating member under the elastic force of the first elastic member, and the second elastic member is sleeved on the first special-shaped column and is located between the inner rotating member and the valve core.

[0011] Preferably, a limiting ring is provided at the bottom end of the circumferential surface of the inner rotating member, and the limiting ring abuts against the bottom end of the upper valve body under the action of the second elastic member.

[0012] Preferably, a through opening is provided at the top of the upper valve body, the inner rotating member is arranged in the through opening, a threaded ring groove is provided at the top of the through opening, the locking assembly also includes an external threaded ring, the external threaded ring is coaxially screwed in the threaded ring groove, the bottom end of the external threaded ring is provided with an installation channel extending radially thereof, and the locking block and the first elastic member are arranged in the installation channel.

[0013] Preferably, a second special-shaped column is arranged at the top end of the inner rotating member, a second special-shaped groove which can be engaged with the second special-shaped column is arranged at the bottom end of the outer rotating member, and the rotating member also includes a screw which passes through the outer rotating member and is threadedly connected with the second special-shaped column.

[0014] Preferably, the top end of the upper valve body is provided with eight semicircular grooves arranged along the circumference of the rotating member, the bottom end of the outer rotating member is provided with a mounting hole extending longitudinally, the rotating member also includes a third elastic member and an abutment column, the abutment column is slidably arranged in the mounting hole, and the third elastic member is arranged in the mounting hole so that the bottom end of the abutment column elastically abuts against the semicircular groove in a rounded shape.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The reversing valve in the present invention can switch between multiple pipelines and realize the connection of different pipelines as needed, and has a simple structure and low cost.

[0017] 2. The present invention provides a valve core which is composed of a main core and a sub-core and has a direct current channel and an arc flow channel, so as to open an arc flow channel in the valve core, so that the arc flow channel can stably conduct two mutually perpendicular connection ports;

[0018] 3. The present invention arranges a locking assembly in the upper valve body so that when adjusting the angle of the valve core, it is necessary to press down the rotating part to release the locking of the locking assembly on the rotating part before the rotating part can be rotated, thereby preventing the liquid from passing through the reversing valve and causing the valve core to rotate in the valve seat, further ensuring the conduction stability of the direct current channel and the arc flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a multifunctional reversing valve;

[0020] Figure 2 It is a three-dimensional cross-sectional view of a multifunctional reversing valve;

[0021] Figure 3 It is a cross-sectional view of a multifunctional reversing valve;

[0022] Figure 4 yes Figure 3 A local enlarged view of point A;

[0023] Figure 5 It is a three-dimensional exploded view of a multifunctional reversing valve in the first perspective;

[0024] Figure 6 It is a three-dimensional exploded view of a multifunctional reversing valve in the second viewing angle;

[0025] Figure 7 It is a partial three-dimensional exploded view of the inner rotating part and the locking part in a multifunctional reversing valve;

[0026] Figure 8 It is a three-dimensional exploded view of the valve core in a multifunctional reversing valve;

[0027] Fig. 9 It is a cross-sectional view of a multifunctional reversing valve when the relative connection ports are connected;

[0028] Fig.10 The invention discloses a cross-sectional view of a multifunctional reversing valve when adjacent communication ports are connected.

[0029] The numbers in the figure are:

[0030] 1-valve seat;

[0031] 11-connection port;

[0032] 12-upper valve body;

[0033] 121-thread ring groove;

[0034] 122-semicircular groove;

[0035] 13-lower valve body;

[0036] 2-valve core;

[0037] 21-DC channel;

[0038] 22-arc flow channel;

[0039] 23-main core;

[0040] 231-first semi-arc slot;

[0041] 232-arc groove;

[0042] 24- secondary core;

[0043] 241 - second semi-arc slot;

[0044] 242-step trough;

[0045] 25- rubber ring;

[0046] 26- first special-shaped column;

[0047] 3- Rotating parts;

[0048] 31-outer rotating member;

[0049] 311-Mounting hole;

[0050] 32-inner rotating member;

[0051] 321-matching groove;

[0052] 322-limiting ring;

[0053] 323-Second special-shaped column;

[0054] 33-screw;

[0055] 34- a third elastic member;

[0056] 35-Butt column;

[0057] 4- Locking assembly;

[0058] 41-locking block;

[0059] 42-first elastic member;

[0060] 43- second elastic member;

[0061] 44-external threaded ring;

[0062] 441-Installation channel. DETAILED DESCRIPTION

[0063] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0064] like Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, the present invention provides:

[0065] A multifunctional reversing valve comprises a valve seat 1, a valve core 2 and a rotating member 3, wherein the valve seat 1 has an installation cavity and four connecting ports 11 extending radially and outwardly from the installation cavity, the valve core 2 is rotatably arranged in the valve seat 1, the valve core 2 has a direct current channel 21 extending radially thereof, and two arc flow channels 22 symmetrically arranged about the direct current channel 21, the rotating member 3 is rotatably arranged on the valve seat 1 and connected to the valve core 2, wherein when one arc flow channel 22 is connected to two connecting ports 11 perpendicular to each other, the other arc flow channel 22 is connected to the other two perpendicular connecting ports 11.

[0066] like Fig. 9 As shown, four connecting ports 11 are connected to the pipeline. When two opposite connecting ports 11 need to be connected, the rotating member 3 is rotated relative to the valve seat 1. Since the rotating member 3 is connected to the valve core 2 installed in the valve seat 1, the valve core 2 rotates in the valve seat 1, and the direct current channel 21 extends along the radial direction of the valve core 2, so that the direct current channel 21 can connect the two opposite connecting ports 11, thereby allowing the liquid to flow through the opposite connecting ports 11 and the direct current channel 21, and at the same time, the arc flow channel 22 is closed to prevent the remaining two connecting ports 11 from being connected;

[0067] like Fig.10 As shown, when the two mutually perpendicular connection ports 11 need to be connected, the rotating member 3 is rotated relative to the valve seat 1, so that the valve core 2 can rotate in the valve seat 1, so that the arc flow channel 22 can connect the two mutually perpendicular connection ports 11, thereby meeting the connection requirements of different pipelines. At the same time, when the arc flow channel 22 connects the two mutually perpendicular connection ports 11, the direct flow channel 21 is not connected to the connection port 11, thereby preventing the liquid from flowing in the direct flow channel 21;

[0068] The reversing valve in this embodiment can switch between multiple pipelines and connect different pipelines as needed, and has a simple structure and low cost.

[0069] like Figure 8As shown, the valve core 2 includes a main core 23 and a sub-core 24, the main core 23 is cylindrically arranged in the installation cavity for coaxial rotation, the main core 23 is symmetrically provided with arc grooves on both sides of the circumferential surface, the direct current channel 21 is located between the two arc grooves, the arc groove has a first semi-arc groove 231 extending along its arc surface, the sub-core 24 is clamped in the arc groove, and the inner side of the sub-core 24 is provided with a second semi-arc groove 241 which forms an arc flow channel 22 with the first semi-arc groove 231.

[0070] A complete valve core 2 can be formed by a main core 23 and two sub-cores 24. To facilitate the opening of an arc flow channel 22 in the valve core 2, arc-shaped grooves are opened on both sides of the circumferential surface of the main core 23, and a first semi-arc groove 231 extending along the arc surface is opened in the arc-shaped groove. The sub-core 24 is clamped in the arc-shaped groove, so that the main core 23 and the sub-core 24 can form a complete cylinder, and a second semi-arc groove 241 extending along the arc surface is provided on the inner side of the sub-core 24. After the sub-core 24 is installed in the arc-shaped groove, the first semi-arc groove 231 and the second semi-arc groove 241 can form a complete arc flow channel 22, so that the liquid passing through the connecting port 11 can be discharged through the complete arc flow channel 22.

[0071] In this embodiment, a valve core 2 is formed by a main core 23 and a sub-core 24 and has a direct current channel 21 and an arc flow channel 22, so that the arc flow channel 22 is opened in the valve core 2, so that the arc flow channel 22 can stably conduct two mutually perpendicular connection ports 11.

[0072] like Figure 8 As shown, the upper and lower parts of the circumferential surface of the main core 23 are provided with arc grooves 232 coaxial therewith, the top of the main core 23 is connected to the rotating member 3, and the upper and lower parts of the outer side of the auxiliary core 24 are provided with step grooves 242 connected to the arc groove 232, and the valve core 2 also includes a rubber ring 25, which is sleeved on the arc groove 232 and the step groove 242 and is interference fit with the mounting cavity.

[0073] In order to enable the auxiliary core 24 to be stably clamped in the arc groove, arc grooves 232 coaxial with the main core 23 are arranged at the upper and lower parts of the circumferential surface of the main core 23, and step grooves 242 connected to the arc groove 232 are arranged at the upper and lower ends of the outer side surface of the auxiliary core 24, so that the arc groove 232 and the step groove 242 can form a complete and continuous annular groove. By sleeved the rubber ring 25 in the annular groove, the auxiliary core 24 can be effectively placed to slide in the arc groove. At the same time, by making the rubber ring 25 have an interference fit with the circumferential surface in the installation cavity, the sealing performance of the valve seat 1 can be effectively improved, and the liquid passing through the valve seat 1 can be prevented from overflowing through the gap when the direct current channel 21 and the arc flow channel 22 are connected to the connecting port 11.

[0074] like Figure 5 and Figure 6 As shown, the valve seat 1 includes a lower valve body 13 and an upper valve body 12, the top of the lower valve body 13 has a mounting groove, the upper valve body 12 is arranged on the lower valve body 13 to form a mounting cavity with the mounting groove, the connecting port 11 is located on the lower valve body 13, and the rotating member 3 passes through the upper valve body 12 and is connected to the valve core 2.

[0075] In order to enable the valve core 2 to rotate stably in the valve seat 1, a mounting groove for the valve core 2 to rotate is opened at the top end of the lower valve body 13, so that the valve core 2 can rotate in the mounting groove, and the upper valve body 12 is installed at the top end of the lower valve body 13, so that the valve core 2 is restricted in the mounting groove and cannot escape, so that the valve core 2 can rotate stably in the mounting groove, and the rotating part 3 is passed through the upper valve body 12, and the bottom end of the rotating part 3 can be connected to the top end of the valve core 2, so that when the rotating part 3 is rotated relative to the valve seat 1, the valve body can rotate in the valve seat 1 to rotatably conduct the connecting port 11.

[0076] like Figure 2 As shown, the reversing valve also includes a locking assembly 4, which is arranged in the upper valve body 12. The locking assembly 4 locks the rotating member 3 in a releasable manner. When the rotating member 3 is pressed down, the locking assembly 4 contacts the rotating member 3 to lock the rotating member 3, so that the rotating member 3 can drive the valve core 2 to rotate in the installation cavity.

[0077] In order to prevent the valve core 2 from rotating in the valve seat 1 when the liquid passes through the reversing valve, a locking assembly 4 is provided in the upper valve body 12. When the angle of the valve core 2 relative to the valve seat 1 is determined, the locking assembly 4 can lock the rotating part 3 relative to the valve seat 1, so that the valve core 2 cannot rotate in the valve seat 1, thereby ensuring the conduction stability of the direct current channel 21 and the arc flow channel 22. At the same time, when it is necessary to adjust the angle of the valve core 2 in the valve seat 1, the rotating part 3 is pressed down relative to the valve seat 1 to release the lock of the locking assembly 4 on the rotating part 3, so that the rotating part 3 can drive the valve core 2 to rotate relative to the valve seat 1, and thus can selectively conduct the connecting port 11.

[0078] like Figure 3 and Figure 4As shown, the rotating member 3 includes an outer rotating member 31 and an inner rotating member 32, the inner rotating member 32 passes through the upper valve body 12 and slidably cooperates with the upper valve body 12, the outer rotating member 31 is arranged at the top end of the inner rotating member 32, and the top end of the valve core 2 is provided with a first special-shaped column 26 that can slidably cooperate with the inner rotating member 32 and transmit torque, the locking assembly 4 has a locking block 41, a first elastic member 42 and a second elastic member 43, the locking block 41 is arranged in the upper valve body 12 along the radial direction of the inner rotating member 32 to slide, the locking block 41 has an inclined surface inclined upward, and a matching groove 321 for inserting the locking block 41 is provided on the circumferential surface of the inner rotating member 32, the first elastic member 42 is arranged on the inner side of the locking block 41, and the locking block 41 is always abutted against the inner rotating member 32 under the elastic force of the first elastic member 42, and the second elastic member 43 is sleeved on the first special-shaped column 26 and is located between the inner rotating member 32 and the valve core 2.

[0079] The first elastic member 42 is a spring, and the second elastic member 43 is a spring or a disc spring.

[0080] By passing the inner rotating member 32 through the valve seat 1 and rotatably connected thereto, the bottom end of the inner rotating member 32 can be fixedly connected to the top end of the valve core 2, and the outer rotating member 31 is arranged at the top end of the inner rotating member 32. When the outer rotating member 31 is rotated relative to the valve seat 1, the inner rotating member 32 can drive the valve core 2 to rotate in the valve seat 1. Since the inner rotating member 32 can slide relative to the valve seat 1, in the initial state, the locking block 41 is clamped in the matching groove 321 under the elastic force of the first elastic member 42. When the outer rotating member 31 is pressed downward relative to the valve seat 1, the inner rotating member 32 overcomes the second elastic member 43. The locking block 41 is moved downward by the elastic force. Since the locking block 41 has an inclined surface inclined upward, under the action of the inclined surface, the locking block 41 overcomes the elastic force of the first elastic member 42 and withdraws from the matching groove 321, so that the inner rotating member 32 can rotate relative to the valve seat 1. After the angle of the valve core 2 is adjusted, the inner rotating member 32 is reset under the elastic force of the first elastic member 42, so that the inner rotating member 32 moves upward, and then the locking block 41 is re-engaged in the matching groove 321 under the action of the first elastic member 42, so that the inner rotating member 32 cannot rotate in the valve seat 1, thereby locking the valve core 2.

[0081] The inner rotating member 32 slides on the first special-shaped column 26 to be able to always transmit torque.

[0082] like Figure 3 and Figure 7 As shown, a limiting ring 322 is provided at the bottom end of the circumferential surface of the inner rotating member 32 , and the limiting ring 322 abuts against the bottom end of the upper valve body 12 under the action of the second elastic member 43 .

[0083] A limiting ring 322 is provided at the bottom end of the inner rotating member 32, so that the limiting ring 322 can abut against the bottom end of the upper valve body 12 under the action of the second elastic member 43, so as to prevent the inner rotating member 32 from separating from the upper valve body 12 due to elastic force. Through the limiting ring 322 and the outer rotating member 31, the inner rotating member 32 can slide in the upper valve body 12.

[0084] like Figure 7 As shown, the top end of the upper valve body 12 is provided with a through opening, the inner rotating member 32 is arranged in the through opening, the top end of the through opening is provided with a threaded ring groove 121, the locking assembly 4 also includes an external threaded ring 44, the external threaded ring 44 is coaxially screwed in the threaded ring groove 121, the bottom end of the external threaded ring 44 is provided with a mounting channel 441 extending radially thereof, and the locking block 41 and the first elastic member 42 are arranged in the mounting channel 441.

[0085] By providing a threaded ring groove 121 on the upper valve body 12 and coaxially screwing the external threaded ring 44 into the threaded ring groove 121, a mounting channel 441 extending radially thereof is provided at the bottom end of the external threaded ring 44, so that the locking block 41 can abut against the matching groove 321 under the action of the first elastic member 42, and at the same time, under the limiting action of the mounting channel 441, the locking block 41 can slide radially along the external threaded ring 44 in the mounting channel 441, and at the same time, when the inner rotating member 32 moves downward, due to the action of the inclined surface of the locking block 41, the locking block 41 can overcome the elastic force of the first elastic member 42 and slide in the mounting channel 441, thereby enabling the inner rotating member 32 to rotate in the upper valve body 12.

[0086] like Figure 5 and Figure 6 As shown, a second special-shaped column 323 is provided at the top end of the inner rotating member 32, and a second special-shaped groove which can be engaged with the second special-shaped column 323 is provided at the bottom end of the outer rotating member 31. The rotating member 3 also includes a screw 33, which passes through the outer rotating member 31 and is threadedly connected with the second special-shaped column 323.

[0087] In order to ensure that the outer rotating member 31 and the inner rotating member 32 can be stably connected, a second special-shaped column 323 is arranged along the vertical direction at the top of the inner rotating member 32. The second special-shaped column 323 can be inserted into the second special-shaped groove at the bottom end of the outer rotating member 31 along the longitudinal direction, and is threadedly connected with the second special-shaped column 323 after passing through the outer rotating member 31 by a screw 33, so that the outer rotating member 31 and the inner rotating member 32 can be stably connected.

[0088] like Figure 3 and Figure 6As shown, the top end of the upper valve body 12 is provided with eight semicircular grooves 122 arranged circumferentially along the rotating member 3, and the bottom end of the outer rotating member 31 is provided with a mounting hole 311 extending longitudinally, and the rotating member 3 also includes a third elastic member 34 and an abutment column 35, and the abutment column 35 is slidably arranged in the mounting hole 311, and the third elastic member 34 is arranged in the mounting hole 311 so that the bottom end of the abutment column 35 elastically abuts against the semicircular groove 122 in a rounded shape.

[0089] By setting eight semicircular grooves 122 at the top of the upper valve body 12, when the outer rotating member 31 rotates at the top of the upper valve body 12, the abutment column 35 is slidably set in the mounting hole 311 through the third elastic member 34, and the bottom end of the abutment column 35 is rounded and abuts against the semicircular groove 122. When the outer rotating member 31 rotates forty-five degrees, the abutment column 35 overcomes the elastic force of the third elastic member 34 and slides into the adjacent semicircular groove 122. In this process, the operator is reminded that the rotation has been made forty-five degrees, thereby improving the rotation accuracy of the valve core 2 in the valve seat 1.

[0090] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A multifunctional reversing valve, characterized in that: The invention comprises a valve seat (1), a valve core (2) and a rotating member (3), wherein the valve seat (1) has an installation cavity and four connection ports (11) extending radially and outwardly from the installation cavity, the valve core (2) is rotatably arranged in the valve seat (1), the valve core (2) has a direct current channel (21) extending radially thereof, and two arc flow channels (22) symmetrically arranged with respect to the direct current channel (21), the rotating member (3) is rotatably arranged on the valve seat (1) and connected to the valve core (2), and when one arc flow channel (22) is connected to two connection ports (11) perpendicular to each other, the other arc flow channel (22) is connected to the other two perpendicular connection ports (11).

2. A multifunctional reversing valve according to claim 1, characterized in that: The valve core (2) comprises a main core (23) and a sub-core (24); the main core (23) is coaxially rotatably arranged in the installation cavity in a cylindrical shape; arc-shaped grooves are symmetrically arranged on two sides of the circumferential surface of the main core (23); the direct current channel (21) is located between the two arc-shaped grooves; the arc-shaped groove has a first semi-arc groove (231) extending along its arc surface; the sub-core (24) is clamped in the arc-shaped groove; and the inner side of the sub-core (24) is provided with a second semi-arc groove (241) which forms an arc flow channel (22) with the first semi-arc groove (231).

3. A multifunctional reversing valve according to claim 2, characterized in that: The upper and lower parts of the circumferential surface of the main core (23) are both provided with arc grooves (232) coaxial therewith, the top end of the main core (23) is connected to the rotating member (3), and the upper and lower parts of the outer side of the auxiliary core (24) are provided with stepped grooves (242) connected to the arc groove (232), and the valve core (2) also includes a rubber ring (25), which is sleeved on the arc groove (232) and the stepped groove (242) and is interference fit with the mounting cavity.

4. A multifunctional reversing valve according to any one of claims 1 to 3, characterized in that: The valve seat (1) comprises a lower valve body (13) and an upper valve body (12), the top end of the lower valve body (13) having a mounting groove, the upper valve body (12) being arranged on the lower valve body (13) to form a mounting cavity with the mounting groove, the connecting port (11) being located on the lower valve body (13), and the rotating member (3) passing through the upper valve body (12) and being connected to the valve core (2).

5. A multifunctional reversing valve according to claim 4, characterized in that: The reversing valve further comprises a locking assembly (4), wherein the locking assembly (4) is arranged in the upper valve body (12), and the locking assembly (4) locks the rotating member (3) in a releasable manner; when the rotating member (3) is pressed down, the locking assembly (4) contacts and locks the rotating member (3), so that the rotating member (3) can drive the valve core (2) to rotate in the installation cavity.

6. A multifunctional reversing valve according to claim 5, characterized in that: The rotating member (3) comprises an outer rotating member (31) and an inner rotating member (32), wherein the inner rotating member (32) passes through the upper valve body (12) and is slidably engaged therewith, the outer rotating member (31) is arranged at the top end of the inner rotating member (32), the top end of the valve core (2) is provided with a first special-shaped column (26) which can slidably engage with the inner rotating member (32) and transmit torque, the locking assembly (4) comprises a locking block (41), a first elastic member (42) and a second elastic member (43), wherein the locking block (41) slides radially along the inner rotating member (32) The locking block (41) is arranged in the upper valve body (12), the locking block (41) has an inclined surface inclined upward, the circumferential surface of the inner rotating member (32) is provided with a matching groove (321) for the locking block (41) to be inserted, the first elastic member (42) is arranged on the inner side of the locking block (41), the locking block (41) is always in contact with the inner rotating member (32) under the elastic force of the first elastic member (42), and the second elastic member (43) is sleeved on the first special-shaped column (26) and is located between the inner rotating member (32) and the valve core (2).

7. A multifunctional reversing valve according to claim 6, characterized in that: A limiting ring (322) is provided at the bottom end of the circumferential surface of the inner rotating member (32), and the limiting ring (322) abuts against the bottom end of the upper valve body (12) under the action of the second elastic member (43).

8. A multifunctional reversing valve according to any one of claims 6 or 7, characterized in that: The top end of the upper valve body (12) is provided with a through opening, the inner rotating member (32) is arranged in the through opening, the top end of the through opening is provided with a threaded ring groove (121), the locking assembly (4) further comprises an external threaded ring (44), the external threaded ring (44) is coaxially screwed in the threaded ring groove (121), the bottom end of the external threaded ring (44) is provided with a mounting channel (441) extending radially thereof, the locking block (41) and the first elastic member (42) are arranged in the mounting channel (441).

9. A multifunctional reversing valve according to claim 6 or 7, characterized in that: The top end of the inner rotating member (32) is provided with a second special-shaped column (323), the bottom end of the outer rotating member (31) is provided with a second special-shaped groove which can be engaged with the second special-shaped column (323), and the rotating member (3) also includes a screw (33), and the screw (33) passes through the outer rotating member (31) and is threadedly connected with the second special-shaped column (323).

10. A multifunctional reversing valve according to claim 6 or 7, characterized in that: The top end of the upper valve body (12) is provided with eight semicircular grooves (122) arranged along the circumference of the rotating member (3); the bottom end of the outer rotating member (31) is provided with a mounting hole (311) extending along the longitudinal direction; the rotating member (3) further comprises a third elastic member (34) and an abutment column (35); the abutment column (35) is slidably arranged in the mounting hole (311); the third elastic member (34) is arranged in the mounting hole (311) so that the bottom end of the abutment column (35) elastically abuts against the semicircular groove (122) in a rounded shape.

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