Multi-way valve

Abstract

The utility model provides a multi-way valve. The multi-way valve comprises a valve body assembly, a guide rod, a sliding assembly, a guide structure and a driving assembly, the guide rod is in sliding fit with the valve body assembly, the valve body assembly is provided with a plurality of valve ports, the driving assembly is in driving connection with one end of the guide rod, the other end of the guide rod is fixedly connected with the sliding assembly so as to drive the sliding assembly to move back and forth, the guide structure is arranged on the valve body assembly, and the sliding assembly switches the communication states of the valve ports through position changes; the guide structure is arranged along the moving path of the sliding assembly, and the guide structure and the sliding assembly are in limiting fit so that the sliding assembly and the guide structure can be limited in the radial direction. According to the scheme, the radial position of the sliding assembly is limited through the guide structure, so that the sliding assembly plays a radial limiting role on the fixedly connected guide rod, the guide rod is not prone to bending, and the situation that the guide rod is difficult to slide due to bending, and reversing of the multi-way valve is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multi-way valve. Background Art

[0002] In some multi-way valves, such as three-way valves, the guide rod in the valve body assembly drives the sliding assembly to move back and forth to achieve the switching of different valve ports. Due to the gravity of the guide rod and the sliding assembly, fluid pressure and other reasons, the end of the guide rod connected to the sliding assembly is prone to bending. After the guide rod is bent, the friction with the matching structure such as the valve body assembly increases, affecting the smooth movement of the sliding assembly driven by the guide rod and affecting the switching function of the multi-way valve. Utility Model Content

[0003] The utility model provides a multi-way valve to solve the problem that a guide rod in a multi-way valve in the prior art is easy to bend, thus affecting the switching function of the multi-way valve.

[0004] In order to solve the above problems, the utility model provides a multi-way valve, including a valve body assembly and a guide rod, a sliding assembly, a guide structure, and a drive assembly arranged in the valve body assembly; the guide rod and the valve body assembly are slidably matched, the valve body assembly has multiple valve ports, the drive assembly is drivingly connected to one end of the guide rod, and the other end of the guide rod is fixedly connected to the sliding assembly to drive the sliding assembly to move back and forth, and the sliding assembly switches the connection state of the multiple valve ports by changing the position; the guide structure is arranged on the valve body assembly, the guide structure is arranged along the moving path of the sliding assembly, and the guide structure and the sliding assembly are limitedly matched to limit the sliding assembly and the guide structure in the radial direction.

[0005] Furthermore, the sliding assembly includes a slide and a slider, the guide rod and the slide are fixedly connected, the slide drives the slider to move, the slider cooperates with the valve port, and the slider switches the connection state of multiple valve ports by changing its position.

[0006] Further, the guide structure has a guide groove, and the sliding component and the guide groove are slidably matched; or the sliding component has a guide groove, and the guide structure and the guide groove are slidably matched.

[0007] Furthermore, there are two guide structures, the two guide structures are arranged side by side, and the sliding assembly is located between the two guide structures; each guide structure is an integral structure, and the cross-section of the guide structure is U-shaped to form the guide groove; or, each guide structure includes two guide plates arranged in parallel, and the guide groove is formed between the two guide plates.

[0008] Furthermore, the valve body assembly includes a positioning sleeve, a valve tube and an end cover, the positioning sleeve and the end cover are respectively connected to the two ends of the valve tube, the guide rod can be slidably inserted into the positioning sleeve, the guide structure is installed on the positioning sleeve, or the guide structure is installed on the valve tube, or the guide structure is installed on the end cover.

[0009] Further,

[0010] The guide structure and the positioning sleeve are an integrated structure; or,

[0011] The end of the positioning sleeve facing the sliding assembly has a positioning groove, and one end of the guide structure penetrates into the positioning groove and is fixed by welding; or,

[0012] One end of the positioning sleeve facing the sliding assembly is provided with a positioning block, and the positioning block is welded and fixed to one end of the guide structure.

[0013] Furthermore, the material hardness of the guide structure is greater than the material hardness of the guide rod.

[0014] Further, the sliding assembly includes a slide, a slider, a limit sleeve and a first elastic member, the guide rod and the slide are drivingly connected, the limit sleeve is installed on the slide, the limit sleeve and the slider are axially limited in the guide rod, the limit sleeve drives the slider to move, the slider cooperates with the valve port, and the slider switches the connection state of multiple valve ports by changing its position, and the first elastic member is located between the limit sleeve and the slider, and the first elastic member applies an elastic force toward the valve port to the slider.

[0015] Furthermore, the limit sleeve includes a thin sleeve section and a coarse sleeve section connected to each other, the slider includes a sealing block and an annular member arranged on the sealing block, the annular member penetrates into the coarse sleeve section, the first elastic member is a spring, the two ends of the first elastic member are respectively located in the thin sleeve section and the annular member, and the sealing block cooperates with the valve port.

[0016] Furthermore, the sealing block is square, and the side of the sealing block and the end of the guide rod are limitedly matched to prevent the sealing block from rotating, and the guide rod is connected to the slide through a fastener; the valve body assembly has a valve seat, and the multiple valve ports are located on the valve seat.

[0017] Furthermore, the driving assembly includes a magnetic rotor and a screw, the magnetic rotor drives the screw to rotate, the screw and the guide rod are threadedly matched, and the screw drives the guide rod to move back and forth.

[0018] The technical scheme of the utility model is applied to provide a multi-way valve, including a valve body assembly and a guide rod, a sliding assembly, a guide structure, and a drive assembly arranged in the valve body assembly; the guide rod and the valve body assembly are slidably matched, the valve body assembly has multiple valve ports, the drive assembly is drivingly connected to one end of the guide rod, and the other end of the guide rod is fixedly connected to the sliding assembly to drive the sliding assembly to move back and forth, and the sliding assembly switches the connection state of multiple valve ports by changing the position; the guide structure is arranged on the valve body assembly, the guide structure is arranged along the moving path of the sliding assembly, and the guide structure and the sliding assembly are limited to limit the sliding assembly and the guide structure in the radial direction. In this scheme, the radial position of the sliding assembly is limited by the limiting effect of the guide structure on the sliding assembly, that is, the sliding assembly is not easy to move in the radial direction, so that the sliding assembly plays a radial limiting role on the fixedly connected guide rod, so that the guide rod is not easy to bend, thereby avoiding the guide rod from being difficult to slide due to bending and affecting the switching of the multi-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 The structure diagram of the multi-way valve provided in the first embodiment of the utility model is shown;

[0021] Figure 2 Another view of the multi-way valve provided in the first embodiment of the utility model is shown;

[0022] Figure 3 Shows Figure 2 A schematic diagram of the positioning sleeve and the guide structure;

[0023] Figure 4 Shows Figure 1 A schematic diagram of the guide rod and the sliding assembly in FIG.

[0024] Figure 5 Shows Figure 1 Schematic diagram of the slider in ;

[0025] Figure 6 The structure diagram of the multi-way valve provided in the second embodiment of the present utility model is shown;

[0026] Figure 7 Another view of the multi-way valve provided in the second embodiment of the present utility model is shown;

[0027] Figure 8 Shows Figure 7 A schematic diagram of a positioning sleeve in FIG.

[0028] Fig. 9 Shows Figure 7 Schematic diagram of the guiding structure in;

[0029] Fig.10 The structure diagram of the multi-way valve provided in the third embodiment of the present utility model is shown;

[0030] Fig.11 Another view of the multi-way valve provided in the third embodiment of the present utility model is shown;

[0031] Fig.12 Shows Fig.11 Schematic diagram of the positioning sleeve in.

[0032] The above drawings include the following reference numerals:

[0033] 10. Valve body assembly; 11. Valve port; 12. Interface; 13. Positioning sleeve; 131. Positioning groove; 132. Positioning block; 14. Valve pipe; 15. End cover; 17. Valve seat;

[0034] 20. Guide rod;

[0035] 30. Sliding assembly; 31. Sliding rack; 32. Sliding block; 321. Sealing block; 322. Ring member; 33. Position limiting sleeve; 331. Thin sleeve section; 332. Thick sleeve section; 34. First elastic member;

[0036] 40. guide structure; 41. guide groove;

[0037] 50. Driving assembly; 51. Magnetic rotor; 52. Screw; 521. Annular rib; 53. Bearing; 54. Limiting member; 55. Second elastic member. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 12As shown, the utility model provides a multi-way valve, including a valve body assembly 10 and a guide rod 20, a sliding assembly 30, a guide structure 40, and a drive assembly 50 arranged in the valve body assembly 10; the guide rod 20 and the valve body assembly 10 are slidably matched, the valve body assembly 10 has a plurality of valve ports 11, the drive assembly 50 is drivingly connected to one end of the guide rod 20, and the other end of the guide rod 20 is fixedly connected to the sliding assembly 30 to drive the sliding assembly 30 to move back and forth, and the sliding assembly 30 switches the connection state of the plurality of valve ports 11 by changing the position; the guide structure 40 is arranged on the valve body assembly 10, and the guide structure 40 is arranged along the moving path of the sliding assembly 30, and the guide structure 40 and the sliding assembly 30 are limitedly matched to limit the sliding assembly 30 and the guide structure 40 in the radial direction.

[0040] In this solution, the radial position of the sliding component 30 is limited by the limiting effect of the guide structure 40 on the sliding component 30, that is, the sliding component 30 is not easy to move in the radial direction, so that the sliding component 30 is fixed to the connected guide rod 20 to play a radial limiting role, making it difficult for the guide rod 20 to bend, thereby avoiding the guide rod 20 from being difficult to slide due to bending and affecting the switching of the multi-way valve.

[0041] Furthermore, in the present solution, the guide rod 20 and the sliding assembly 30 are driven electrically rather than driven by fluid pressure difference, so that the multi-way valve can still switch the flow valve ports under low pressure difference.

[0042] The sliding assembly 30 includes a slide 31 and a slider 32. The guide rod 20 and the slide 31 are fixedly connected. The slide 31 drives the slider 32 to move. The slider 32 cooperates with the valve port 11. The slider 32 switches the connection state of multiple valve ports 11 by changing its position.

[0043] In this solution, the guide structure 40 has a guide groove 41, and the sliding assembly 30 and the guide groove 41 are slidably matched; or the sliding assembly 30 has a guide groove 41, and the guide structure 40 and the guide groove 41 are slidably matched. Specifically, the guide groove 41 on the sliding assembly 30 can be set in the sliding frame 31.

[0044] In this way, during the movement of the slide 31, the slide 31 is limited by the cooperation of the guide groove 41 and the guide structure 40. Specifically, the slide 31 is plate-shaped, and the width of the guide groove 41 matches the thickness of the slide 31.

[0045] like Figure 2 and Figure 3 As shown, in this embodiment, there are two guide structures 40, which are arranged side by side, and the sliding assembly 30 is located between the two guide structures 40. In this way, the sliding assembly 30 is limited and guided by the two guide structures 40, further reducing the possibility of bending of the guide rod 20.

[0046] like Fig. 9 As shown, each guide structure 40 can be provided as an integral structure, and the cross section of the guide structure 40 is U-shaped to form a guide groove 41 .

[0047] or, as Figure 3 As shown, each guide structure 40 is a split structure, and the guide structure 40 includes two guide plates arranged in parallel, and a guide groove 41 is formed between the two guide plates.

[0048] In this embodiment, the valve body assembly 10 includes a positioning sleeve 13, a valve tube 14 and an end cover 15. The positioning sleeve 13 and the end cover 15 are respectively connected to the two ends of the valve tube 14. The guide rod 20 can be slidably inserted into the positioning sleeve 13. Figure 2 , Figure 7 or Fig.11 As shown, the guide structure 40 is installed on the positioning sleeve 13 .

[0049] Alternatively, in other embodiments not shown, the guide structure 40 is installed on the valve tube 14 , or the guide structure 40 is installed on the end cover 15 .

[0050] like Figures 1 to 5 As shown, in the first embodiment, the guide structure 40 and the positioning sleeve 13 are an integrated structure, so that the structure has high strength.

[0051] or, as Figures 6 to 9 As shown, in the second embodiment, the end of the positioning sleeve 13 facing the sliding assembly 30 has a positioning groove 131, and one end of the guide structure 40 is inserted into the positioning groove 131 and fixed by welding, that is, the positioning sleeve 13 and the guide structure 40 are processed separately and then positioned and fixed.

[0052] or, as Figures 10 to 12 As shown, in the third embodiment, the end of the positioning sleeve 13 facing the sliding assembly 30 has a positioning block 132, and the positioning block 132 is welded and fixed to one end of the guide structure 40. In this way, a reliable connection between the positioning sleeve 13 and the guide structure 40 can be achieved. In this embodiment, the guide structure 40 can be an integrated structure or a split structure.

[0053] In this solution, the material hardness of the guide structure 40 is greater than the material hardness of the guide rod 20, so that the guide structure 40 is not easily deformed and can play a better guiding role.

[0054] Specifically, the guide rod 20 is made of brass, and the guide structure 40 is made of stainless steel. Stainless steel has high strength and is not easily deformed, and the bending of the guide rod 20 is avoided or reduced through the limiting effect of the guide structure 40.

[0055] like Figures 1 to 5As shown, the sliding assembly 30 includes a slide 31, a slider 32, a limit sleeve 33 and a first elastic member 34. The guide rod 20 and the slide 31 are drivingly connected, the limit sleeve 33 is fixed to the slide 31, the limit sleeve 33 and the slider 32 are axially limited in the guide rod 20, the limit sleeve 33 drives the slider 32 to move, the slider 32 cooperates with the valve port 11, and the slider 32 switches the connection state of multiple valve ports 11 by changing its position. The first elastic member 34 is located between the limit sleeve 33 and the slider 32, and the first elastic member 34 applies an elastic force toward the valve port 11 to the slider 32.

[0056] Through the above arrangement, the first elastic member 34 applies elastic force to the slider 32, so that when the slider 32 blocks the corresponding valve port 11, it can be reliably sealed to avoid leakage. In addition, in this solution, since the guide structure 40 is provided, the elastic force of the first elastic member 34 will not cause the guide rod 20 to bend.

[0057] The limiting sleeve 33 and the slide 31 are both made of metal materials, and the limiting sleeve 33 and the slide 31 are connected by welding, or by snapping, riveting, or interference fitting.

[0058] like Figure 4 As shown, the limiting sleeve 33 includes a thin sleeve section 331 and a thick sleeve section 332 that are connected to each other, the slider 32 includes a sealing block 321 and an annular member 322 arranged on the sealing block 321, the annular member 322 penetrates into the thick sleeve section 332, the first elastic member 34 is a spring, and the two ends of the first elastic member 34 are respectively located in the thin sleeve section 331 and the annular member 322, and the sealing block 321 cooperates with the valve port 11.

[0059] Through the above arrangement, the first elastic member 34 can be limited in radial direction to avoid bending of the first elastic member 34 , thereby maintaining a reliable thrust on the slider 32 .

[0060] Furthermore, the slider 32 is made of non-metallic material, such as plastic or rubber, so that the sealing performance with the valve port 11 is good. The sealing block 321 is square, and the side of the sealing block 321 and the end of the guide rod 20 are limited to prevent the sealing block 321 from rotating, so that the slider 32 can only move in a straight line to avoid affecting normal operation due to rotation. The guide rod 20 is made of metal material, and the guide rod 20 is connected to the slide 31 by fasteners, such as riveting; the valve body assembly 10 has a valve seat 17, and multiple valve ports 11 are located on the valve seat 17.

[0061] In this solution, the driving assembly 50 includes a magnetic rotor 51 and a screw 52. The magnetic rotor 51 drives the screw 52 to rotate. The screw 52 and the internal thread of the guide rod 20 cooperate, and the screw 52 drives the guide rod 20 to move back and forth.

[0062] That is, in this solution, the guide rod 20 and the sliding assembly 30 are driven electrically, rather than driven by fluid pressure difference, so that the multi-way valve can still switch the flow valve port under low pressure difference. Specifically, the multi-way valve also includes an electromagnetic coil, and the electromagnetic coil and the magnetic rotor 51 form a stepping motor to achieve precise control of the travel of the guide rod 20.

[0063] like Figure 1 and Figure 2 As shown, the valve body assembly 10 includes a positioning sleeve 13, the guide rod 20 and the positioning sleeve 13 are slidably matched, a bearing 53 is arranged in the end of the positioning sleeve 13 away from the sliding assembly 30, and the screw 52 penetrates the positioning sleeve 13 and matches with the inner ring of the bearing 53. By providing the bearing 53, the screw 52 can be limited and the rotation resistance of the screw 52 can be reduced.

[0064] Furthermore, the outer ring of the positioning sleeve 13 and the bearing 53 are interference fit or riveted, the screw 52 has an annular rib 521, the annular rib 521 and the inner ring of the bearing 53 abut against the side of the sliding component 30, the driving component 50 also includes a limit member 54 and a second elastic member 55, the limit member 54 is located on the side of the bearing 53 away from the sliding component 30, the limit member 54 and the screw 52 are fixedly connected, the second elastic member 55 is sleeved on the screw 52, ​​and the two ends of the second elastic member 55 abut against the inner ring of the bearing 53 and the limit member 54 respectively.

[0065] Through the above arrangement, the screw rod 52 , the bearing 53 and the positioning sleeve 13 are axially limited, and the screw rod 52 cannot move axially, thereby preventing the screw rod 52 from moving axially and affecting the movement accuracy of the guide rod 20 .

[0066] In a specific embodiment, the multi-way valve is a three-way valve, the valve ports 11 are two, the valve body assembly 10 has an interface 12 axially facing the guide rod 20, the interface 12 is connected to the cavity of the valve body assembly 10, and the sliding assembly 30 is used to switch different valve ports 11 to communicate with the interface 12. In other embodiments, the valve ports 11 can also be set to more.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

Claims

1. A multi-way valve, characterized in that: The invention comprises a valve body assembly (10), a guide rod (20), a sliding assembly (30), a guide structure (40), and a drive assembly (50) arranged in the valve body assembly (10); the guide rod (20) and the valve body assembly (10) are slidably matched, the valve body assembly (10) has a plurality of valve ports (11), the drive assembly (50) is drivingly connected to one end of the guide rod (20), and the other end of the guide rod (20) is fixedly connected to the sliding assembly (30) to drive the sliding assembly (30) to move back and forth, and the sliding assembly (30) switches the communication state of the plurality of valve ports (11) by changing its position; the guide structure (40) is arranged on the valve body assembly (10), the guide structure (40) is arranged along the moving path of the sliding assembly (30), and the guide structure (40) and the sliding assembly (30) are limitedly matched to limit the sliding assembly (30) and the guide structure (40) in the radial direction.

2. The multi-way valve according to claim 1, characterized in that: The sliding assembly (30) comprises a slide (31) and a slider (32); the guide rod (20) and the slide (31) are fixedly connected; the slide (31) drives the slider (32) to move; the slider (32) cooperates with the valve port (11); the slider (32) switches the connection state of the plurality of valve ports (11) by changing its position.

3. The multi-way valve according to claim 1, characterized in that: The guide structure (40) has a guide groove (41), and the sliding component (30) and the guide groove (41) are slidably matched; or the sliding component (30) has a guide groove (41), and the guide structure (40) and the guide groove (41) are slidably matched.

4. The multi-way valve according to claim 3, characterized in that: There are two guide structures (40), the two guide structures (40) are arranged side by side, and the sliding assembly (30) is located between the two guide structures (40); each guide structure (40) is an integral structure, and the cross-section of the guide structure (40) is U-shaped to form the guide groove (41); or each guide structure (40) includes two guide plates arranged in parallel, and the guide groove (41) is formed between the two guide plates.

5. The multi-way valve according to claim 1, characterized in that: The valve body assembly (10) comprises a positioning sleeve (13), a valve tube (14) and an end cover (15); the positioning sleeve (13) and the end cover (15) are respectively connected to two ends of the valve tube (14); the guide rod (20) can slidably penetrate into the positioning sleeve (13); the guide structure (40) is installed on the positioning sleeve (13), or the guide structure (40) is installed on the valve tube (14), or the guide structure (40) is installed on the end cover (15).

6. The multi-way valve according to claim 5, characterized in that: The guide structure (40) and the positioning sleeve (13) are an integral structure; or, One end of the positioning sleeve (13) facing the sliding assembly (30) has a positioning groove (131), and one end of the guide structure (40) penetrates into the positioning groove (131) and is fixed by welding; or, One end of the positioning sleeve (13) facing the sliding assembly (30) is provided with a positioning block (132), and the positioning block (132) is welded and fixed to one end of the guide structure (40).

7. The multi-way valve according to claim 1, characterized in that: The material hardness of the guide structure (40) is greater than the material hardness of the guide rod (20).

8. The multi-way valve according to claim 1, characterized in that: The sliding assembly (30) comprises a slide (31), a slider (32), a limiting sleeve (33) and a first elastic member (34); the guide rod (20) and the slide (31) are drivingly connected; the limiting sleeve (33) is installed on the slide (31); the limiting sleeve (33) and the slider (32) cooperate in axial limiting of the guide rod (20); the limiting sleeve (33) drives the slider (32) to move; the slider (32) cooperates with the valve port (11); the slider (32) switches the connection state of the plurality of valve ports (11) by changing the position; the first elastic member (34) is located between the limiting sleeve (33) and the slider (32); the first elastic member (34) applies an elastic force toward the valve port (11) to the slider (32).

9. The multi-way valve according to claim 8, characterized in that: The limiting sleeve (33) comprises a thin sleeve section (331) and a thick sleeve section (332) which are connected to each other; the sliding block (32) comprises a sealing block (321) and an annular member (322) arranged on the sealing block (321); the annular member (322) penetrates into the thick sleeve section (332); the first elastic member (34) is a spring; two ends of the first elastic member (34) are respectively located in the thin sleeve section (331) and the annular member (322); the sealing block (321) cooperates with the valve port (11).

10. The multi-way valve according to claim 9, characterized in that: The sealing block (321) is square in shape, and the side surface of the sealing block (321) and the end of the guide rod (20) are limitedly matched to prevent the sealing block (321) from rotating, and the guide rod (20) is connected to the slide (31) via a fastener; the valve body assembly (10) has a valve seat (17), and the plurality of valve ports (11) are all located on the valve seat (17).

11. The multi-way valve according to claim 1, characterized in that: The driving assembly (50) comprises a magnetic rotor (51) and a screw rod (52), wherein the magnetic rotor (51) drives the screw rod (52) to rotate, the screw rod (52) and the guide rod (20) are threadedly matched, and the screw rod (52) drives the guide rod (20) to move back and forth.

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