Reversing valve with adjustable speed

Abstract

The speed-adjustable reversing valve comprises a valve body, a piston piece, a reset mechanism, a reversing structure and an adjusting assembly, the valve body is provided with a valve cavity, a water inlet, a first water outlet and a second water outlet, the piston piece is arranged in the valve cavity in a sliding mode so as to divide the valve cavity into a water inlet cavity and a water outlet cavity, the water inlet cavity is communicated with the water inlet, and the water outlet cavity is communicated with the water outlet. The reversing structure is arranged on the piston part, the piston part can slide to a first position and a second position, under the first position, the reversing structure can block the first water outlet and communicate the second water outlet with the water outlet cavity, and under the second position, the reversing structure can block the second water outlet and communicate the first water outlet with the water outlet cavity; the adjusting assembly is arranged on the valve body, a fluid channel is formed between the adjusting assembly and the valve body, the water inlet and the water outlet cavity are communicated through the fluid channel, and the adjusting assembly can adjust the minimum cross sectional area of the fluid channel. Therefore, the sliding speed of the piston piece can be adjusted, and the reversing speed can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to an adjustable-speed reversing valve. Background Art

[0002] The reversing valve is widely used in various water-related industries, such as the flushing system of intelligent toilets. The reversing valve usually has an inlet and more than two outlets. During use, the flow path is switched to achieve the purpose of water path distribution and flow direction change. In the prior art, the switching speed of the reversing valve is generally fixed and cannot be adjusted, making it difficult to meet the use requirements. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an adjustable-speed reversing valve, which can solve the problem that the switching speed of the reversing valve is difficult to adjust.

[0004] The adjustable-speed reversing valve according to the first aspect embodiment of the utility model includes: a valve body, a piston member, a reset mechanism, a reversing structure and an adjustment assembly. The valve body has a valve cavity, an inlet, a first outlet and a second outlet. The piston member is slidably arranged in the valve cavity to divide the valve cavity into an inlet cavity and an outlet cavity. The inlet cavity is communicated with the inlet. When water enters from the inlet, it can drive the piston member to slide towards the outlet cavity. The reset mechanism can drive the piston member to slide towards the inlet cavity when the water inlet stops supplying water. The reversing structure is arranged on the piston member. The piston member can slide to a first position and a second position. In the first position, the reversing structure can block the first outlet and communicate the second outlet with the outlet cavity. In the second position, the reversing structure can block the second outlet and communicate the first outlet with the outlet cavity. The adjustment assembly is arranged on the valve body. There is a fluid passage between the adjustment assembly and the valve body. The fluid passage communicates the inlet and the outlet cavity, and the adjustment assembly can adjust the minimum cross-sectional area of the fluid passage.

[0005] The adjustable speed reversing valve according to the embodiment of the present utility model has at least the following beneficial effects: after water enters from the water inlet, a part of the water enters the water inlet cavity to drive the piston member to slide, and the other part of the water flows through the fluid passage to the water outlet cavity. The piston member is initially in the first position, and at this time, water flows out from the second water outlet. When the piston member slides to the second position, the reversing structure can block the second water outlet, and water flows out from the first water outlet to achieve switching. The adjusting assembly can adjust and reduce the cross-sectional area of the smallest part of the fluid passage, thereby reducing the water outlet flow rate. Since the water inlet pressure of the water inlet is approximately constant, more water flows into the water inlet cavity, thereby accelerating the sliding of the piston member and further accelerating the reversing switching speed. On the contrary, increasing the cross-sectional area of the fluid passage can slow down the sliding of the piston member and further reduce the switching speed.

[0006] According to some embodiments of the present utility model, the adjusting assembly is in transmission connection with the valve body, and the adjusting assembly can slide towards the fluid passage and extend into the fluid passage.

[0007] According to some embodiments of the present utility model, the adjusting assembly includes a transmission member and a slider. The slider is rotatably arranged on the transmission member. The transmission member is in threaded connection with the valve body. There is a limiting structure between the slider and the valve body. The limiting structure can limit the rotation of the slider. Rotating the transmission member can drive the slider to slide towards the fluid passage.

[0008] According to some embodiments of the present utility model, the valve body is provided with a scale ring, and the scale ring is located on the circumference of the transmission member.

[0009] According to some embodiments of the present utility model, the valve body includes a tee shell, a bottom shell and a piston cylinder. The tee shell includes a main pipe and a side pipe. The bottom of the main pipe is connected to the bottom shell. The water inlet is located at the top of the main pipe. The transmission member is in threaded connection with the side pipe so that the slider can slide along the axial direction of the side pipe. The piston cylinder is fixedly connected to the main pipe with the opening facing downwards. The piston cylinder and the valve body define the valve cavity, and there is a gap between the piston cylinder and the main pipe. The gap is the fluid passage. The piston member is slidably connected to the piston cylinder, and the slider can abut against the side wall of the piston cylinder.

[0010] According to some embodiments of the present utility model, the limiting structure includes a limiting groove and a limiting block. One of the piston cylinder and the slider is provided with the limiting block, and the other is provided with the limiting groove. The limiting block can be inserted into the limiting groove to limit the rotation of the slider.

[0011] According to some embodiments of the present utility model, the piston cylinder is provided with a first through hole, the first through hole communicates the water inlet with the water inlet chamber, and the piston cylinder is provided with a check valve, and the check valve only allows fluid to flow out of the water inlet chamber towards the outside of the piston cylinder.

[0012] According to some embodiments of the present utility model, the reset mechanism includes an elastic member, one end of the elastic member abuts against the valve body, and the other end abuts against the bottom of the piston member, and the elastic member can drive the piston member to move upward.

[0013] According to some embodiments of the present utility model, the commutation structure includes a first baffle and a second baffle, the first baffle is provided with a first opening, the second baffle is provided with a second opening, in the first position, the second opening communicates with the second water outlet, and in the second position, the first opening communicates with the first water outlet.

[0014] According to some embodiments of the present utility model, the first water outlet and the second water outlet are relatively arranged on both sides of the valve body, the first baffle and the second baffle are relatively arranged, and an elastic structural member is arranged between the first baffle and the second baffle, and the elastic structural member can drive the first baffle and the second baffle to press against the inner wall of the valve body.

[0015] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0016] The above or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 an exploded view of;

[0019] Figure 3 is a cross-sectional view of some embodiments of the adjustment assembly;

[0020] Figure 4 is a cross-sectional view of some embodiments of the adjustment assembly;

[0021] Figure 5 is a cross-sectional view when the piston member is in the first position;

[0022] Figure 6 is a cross-sectional view when the piston member is in the second position;

[0023] Figure 7 It is a schematic diagram of a piston part and a commutation structure.

[0024] Reference numerals:

[0025] Valve body 100, valve cavity 110, water inlet 120, first water outlet 130, second water outlet 140, scale ring 150, tee shell 160, main pipe 161, side pipe 162, bottom shell 170, piston cylinder 180, limit block 181, first through hole 182, check valve 183;

[0026] Piston part 200, water inlet cavity 210, water outlet cavity 220;

[0027] Elastic member 300;

[0028] Commutation structure 400, first baffle 410, first opening 411, second baffle 420, second opening 421, elastic structural member 430;

[0029] Adjusting assembly 500, transmission member 510, slider 520, limit groove 521;

[0030] Fluid passage 600. Detailed implementation manners

[0031] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Referring to Figures 1 to 4 , according to the adjustable speed reversing valve of the first aspect embodiment of the present utility model, it includes a valve body 100, a piston member 200, a reset mechanism, a reversing structure 400, and an adjustment assembly 500. The valve body 100 has a valve cavity 110, a water inlet 120, a first water outlet 130, and a second water outlet 140. The piston member 200 is slidably disposed in the valve cavity 110 to divide the valve cavity 110 into a water inlet cavity 210 and a water outlet cavity 220. The water inlet cavity 210 is in communication with the water inlet 120. When water enters from the water inlet 120, it can drive the piston member 200 to slide in the direction of the water outlet cavity 220. The reset mechanism can drive the piston member 200 to slide in the direction of the water inlet cavity 210 when the water inlet 120 stops supplying water. The reversing structure 400 is disposed on the piston member 200. The piston member 200 can slide to a first position and a second position. In the first position, the reversing structure 400 can block the first water outlet 130 and connect the second water outlet 140 with the water outlet cavity 220. In the second position, the reversing structure 400 can block the second water outlet 140 and connect the first water outlet 130 with the water outlet cavity 220. The adjustment assembly 500 is disposed on the valve body 100. There is a fluid passage 600 between the adjustment assembly 500 and the valve body 100. The fluid passage 600 connects the water inlet 120 and the water outlet cavity 220, and the adjustment assembly 500 can adjust the minimum cross-sectional area of the fluid passage 600. After water enters from the water inlet 120, a part of the water enters the water inlet cavity 210 to drive the piston member 200 to slide, and the other part of the water flows through the fluid passage 600 to the water outlet cavity 220. The initial state of the piston member 200 is the first position. At this time, water flows out from the second water outlet 140. When the piston member 200 slides to the second position, the reversing structure 400 can block the second water outlet 140, and water flows out from the first water outlet 130 to achieve switching. The adjustment assembly 500 can adjust and reduce the cross-sectional area of the minimum part of the fluid passage 600, thereby reducing the water outlet flow rate. And the water inlet pressure of the water inlet 120 is approximately constant, so that more water flows to the water inlet cavity 210, thereby accelerating the sliding of the piston member 200, and further accelerating the reversing switching speed. On the contrary, increasing the cross-sectional area of the fluid passage 600 can slow down the sliding of the piston member 200, and further reduce the switching speed.

[0035] Specifically, the water inlet 120 can be externally connected to a water pipe. A fluid passage 600 communicating with the water inlet 120 and the water outlet cavity 220 can be provided inside the valve body 100. The specific structure of the fluid passage 600 is not limited herein. After the water inlet 120 is opened to let water in, the water can flow out through the fluid passage 600. The piston member 200 can slide up and down along the valve cavity 110. The water inlet cavity 210 is located in the upper part. The piston member 200 can slide downward under the action of the water inlet pressure, thereby driving the commutation structure 400 to open or close the corresponding water outlet. The specific structure of the commutation structure 400 is not limited herein. It can be understood that after the adjusting assembly 500 adjusts the cross-sectional area of the fluid passage 600, the pressure in the water inlet cavity 210 will be increased, thus accelerating the downward movement speed of the piston member 200, and also accelerating the commutation speed of the commutation structure 400. In some embodiments, the first water outlet 130 can be communicated with the toilet wall for cleaning the wall surface, and the second water outlet 140 can be communicated with the toilet drain for flushing. By adjusting the adjusting assembly 500, the switching speed between cleaning the toilet wall and flushing the drain can be adjusted, so as to meet the user's usage requirements.

[0036] Referring to Figures 2 to 4 , in some embodiments of the present invention, the adjusting assembly 500 is in transmission connection with the valve body 100, and the adjusting assembly 500 can slide towards the fluid passage 600 and extend into the fluid passage 600. Specifically, the adjusting assembly 500 can be connected to the valve body 100 through a mechanical transmission structure. The specific transmission structure is not limited herein. The position of the adjusting assembly 500 can be adjusted to extend into the fluid passage 600, thereby blocking the fluid passage 600 and reducing the minimum cross-sectional area of the fluid passage 600, so as to achieve speed adjustment. No electronic components are required for driving, and the structure is simple and the reliability is strong.

[0037] Referring to Figures 2 to 4, in some embodiments of the present utility model, the adjusting assembly 500 includes a transmission member 510 and a slider 520. The slider 520 is rotatably provided on the transmission member 510. The transmission member 510 is threadedly connected to the valve body 100. There is a limiting structure between the slider 520 and the valve body 100, and the limiting structure can limit the rotation of the slider 520. By rotating the transmission member 510, the slider 520 can be driven to slide towards the fluid passage 600. Specifically, threads can be provided on the outer side wall of the transmission member 510, and corresponding threaded portions can be provided on the valve body 100. The slider 520 is rotatably connected to the inner end of the transmission member 510. During adjustment, when the transmission member 510 is rotated, the transmission member 510 can telescopically move towards the inside of the valve body 100, and at the same time drive the slider 520 to telescopically move. And the limiting structure can limit the rotation of the slider 520 to keep it in a sliding state. By tightening the transmission member 510, the slider 520 can be driven to extend into the fluid passage 600, reducing the cross-sectional area of the fluid passage 600. By loosening the transmission member 510, the slider 520 can be driven to leave the fluid passage 600, expanding the cross-sectional area. The operation is simple and convenient for adjustment.

[0038] It can be conceived that the adjusting assembly 500 can also be set as a sliding block and a fastening structure. The sliding block can slide towards the fluid passage 600. After sliding in place, the position can be fixed by a fastener or a clamping structure, so as to achieve adjustment.

[0039] Refer to Figures 1 to 2 , in some embodiments of the present utility model, the valve body 100 is provided with a scale ring 150, and the scale ring 150 is located in the circumferential direction of the transmission member 510. Specifically, values can be set on the scale ring 150, and the rotation angle of the transmission member 510 can correspond to the scale, so that the user can perceive the adjustment state, which is further convenient for the user to adjust.

[0040] Refer to Figures 1 to 6, in some embodiments of the present utility model, the valve body 100 includes a three-way housing 160, a bottom housing 170, and a piston cylinder 180. The three-way housing 160 includes a main pipe 161 and a side pipe 162. The bottom of the main pipe 161 is connected to the bottom housing 170. The water inlet 120 is located at the top of the main pipe 161. The transmission member 510 is threadedly connected to the side pipe 162 so that the slider 520 can slide along the axial direction of the side pipe 162. The piston cylinder 180 is fixedly connected to the main pipe 161 with its opening facing downward. The piston cylinder 180 and the valve body 100 define a valve cavity 110, and there is a gap between the piston cylinder 180 and the main pipe 161. The gap is a fluid passage 600. The piston member 200 is slidably connected to the piston cylinder 180, and the slider 520 can abut against the side wall of the piston cylinder 180. Specifically, by providing the three-way housing 160, the transmission member 510 and the slider 520 can extend from the side pipe 162, and the fluid passage 600 is defined in the main pipe 161 by the piston cylinder 180, so that the slider 520 slides on the side of the piston cylinder 180, and thus the cross-sectional area of the fluid passage 600 can be adjusted. It can be understood that the piston cylinder 180 can not only form a sliding fit with the piston but also form an adjustment fit with the slider 520, which can make the structure of the valve body 100 more compact.

[0041] Referring to Figures 3 to 4 , in some embodiments of the present utility model, the limiting structure includes a limiting groove 521 and a limiting block 181. One of the piston cylinder 180 and the slider 520 is provided with the limiting block 181, and the other is provided with the limiting groove 521. The limiting block 181 can be inserted into the limiting groove 521 to limit the rotation of the slider 520.

[0042] Specifically, the limiting groove 521 can be provided on the slider 520, the limiting block 181 can be provided on the piston rod, and the limiting block 181 can be arranged to extend up and down. The sliding groove also extends up and down to facilitate limiting the rotation of the slider 520.

[0043] It can be understood that the limiting block 181 can also be provided on the slider 520, and the limiting groove 521 can be provided in the sliding groove.

[0044] Referring to Figures 5 to 6 , in some embodiments of the present utility model, the piston cylinder 180 is provided with a first through hole 182. The first through hole 182 communicates the water inlet 120 with the water inlet cavity 210, and the piston cylinder 180 is provided with a one-way valve 183. The one-way valve 183 only allows the fluid to flow out of the water inlet cavity 210 towards the outside of the piston cylinder 180, which can accelerate the reset speed of the piston member 200.

[0045] Specifically, a relatively small first through hole 182 and a one-way valve 183 may be provided in the upper part of the piston cylinder 180. The one-way valve 183 can restrict the entry of external fluid into the water inlet chamber 210, but can allow the fluid in the water inlet chamber 210 to flow outwards. When the piston member 200 is reset to the first position, the water inlet 120 stops admitting water, and the reset mechanism drives the piston member 200 to slide upwards. Through the one-way valve 183, the speed of the fluid flowing outwards can be increased, thereby accelerating the reset speed of the piston member 200.

[0046] Referring to Figures 5 to 6 , in some embodiments of the present invention, the reset mechanism includes an elastic member 300. One end of the elastic member 300 abuts against the valve body 100, and the other end abuts against the bottom of the piston member 200. The elastic member 300 can drive the piston member 200 to move upwards. Specifically, the elastic member 300 may be a spring. The upper end of the spring can abut against the bottom of the piston member 200, and the lower end can abut against the valve seat. When the piston member 200 slides downwards to compress the spring, after the water inlet stops, the spring can drive the piston member 200 to slide upwards and reset.

[0047] Referring to Figures 5 to 7 , in some embodiments of the present invention, the commutation structure 400 includes a first baffle 410 and a second baffle 420. The first baffle 410 is provided with a first opening 411, and the second baffle 420 is provided with a second opening 421. In the first position, the second opening 421 communicates with the second water outlet 140. In the second position, the first opening 411 communicates with the first water outlet 130. Specifically, during the sliding process, the first baffle 410 can block the first water outlet 130, and when it slides to align the first opening 411 with the first water outlet 130, communication can be achieved. Similarly, the second baffle 420 can also block or open the second water outlet 140. By setting the first opening 411 of the first baffle 410 and the second opening 421 of the second baffle 420 at different positions, the water outlet switching between the first water outlet 130 and the second water outlet 140 can be realized.

[0048] Referring to Figures 5 to 7, in some embodiments of the present utility model, the first water outlet 130 and the second water outlet 140 are relatively arranged on both sides of the valve body 100. The first baffle 410 and the second baffle 420 are oppositely arranged, and an elastic structural member 430 is arranged between the first baffle 410 and the second baffle 420. The elastic structural member 430 can drive the first baffle 410 and the second baffle 420 to press against the inner wall of the valve body 100. Specifically, the first baffle 410 and the second baffle 420 are arranged below the piston member 200 and on both sides. The setting position of the first opening 411 can be higher than that of the second opening 421. In the first position, the first baffle 410 blocks the first water outlet 130 below, while the second opening 421 of the second baffle 420 can open the second water outlet 140. In the second position, the piston member 200 slides down, the first opening 411 can open the first water outlet 130, and the second baffle 420 blocks the second water outlet 140. The elastic structural member 430 can be set as a V-shaped structure or a W-shaped structure to drive the first baffle 410 and the second baffle 420 to move away from each other, so as to press against the inside of the valve seat and have good sealing performance.

[0049] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0050] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An adjustable speed reversing valve, characterized in that, include: The valve body (100) has a valve cavity (110), a water inlet (120), a first water outlet (130) and a second water outlet (140); A piston member (200) is slidably disposed in the valve chamber (110) to separate the valve chamber (110) into a water inlet chamber (210) and a water outlet chamber (220); the water inlet chamber (210) is communicated with the water inlet (120); when water enters the water inlet (120), the piston member (200) can be driven to slide toward the water outlet chamber (220); a reset mechanism, which is capable of driving the piston member (200) to slide toward the water inlet chamber (210) when the water inlet (120) stops inletting water; a reversing structure (400) provided on the piston member (200), wherein the piston member (200) is capable of sliding to a first position and a second position; in the first position, the reversing structure (400) is capable of blocking the first water outlet (130) and connecting the second water outlet (140) to the water outlet chamber (220); and in the second position, the reversing structure (400) is capable of blocking the second water outlet (140) and connecting the first water outlet (130) to the water outlet chamber (220); An adjusting component (500) is provided on the valve body (100), and a fluid channel (600) is provided between the adjusting component (500) and the valve body (100). The fluid channel (600) connects the water inlet (120) and the water outlet cavity (220), and the adjusting component (500) is capable of adjusting the minimum cross-sectional area of the fluid channel (600).

2. The adjustable speed reversing valve according to claim 1, wherein The regulating assembly (500) is in transmission connection with the valve body (100), and the regulating assembly (500) is capable of sliding toward the fluid channel (600) and extending into the fluid channel (600).

3. The adjustable speed reversing valve according to claim 2, wherein, The regulating assembly (500) includes a transmission member (510) and a slider (520), wherein the slider (520) is rotatably disposed on the transmission member (510), and the transmission member (510) is threadedly connected to the valve body (100). A limiting structure is provided between the slider (520) and the valve body (100), and the limiting structure can limit the rotation of the slider (520). Rotating the transmission member (510) can drive the slider (520) to slide toward the fluid channel (600).

4. The adjustable speed reversing valve according to claim 3, characterized in that, The valve body (100) is provided with a scale ring (150), and the scale ring (150) is located in the circumferential direction of the transmission member (510).

5. The adjustable speed reversing valve according to claim 3, characterized in that, The valve body (100) includes a three-way housing (160), a bottom housing (170), and a piston cylinder (180). The three-way housing (160) includes a main pipe (161) and a side pipe (162). The bottom of the main pipe (161) is connected to the bottom housing (170). The water inlet (120) is located at the top of the main pipe (161). The transmission member (510) is threadedly connected to the side pipe (162) so that the slider (520) can slide along the axial direction of the side pipe (162). The piston cylinder (180) is fixedly connected to the main pipe (161) with its opening facing downwards. The piston cylinder (180) and the valve body (100) define the valve cavity (110), and there is a gap between the piston cylinder (180) and the main pipe (161), and this gap is the fluid passage (600). The piston member (200) is slidably connected to the piston cylinder (180), and the slider (520) can abut against the side wall of the piston cylinder (180).

6. The adjustable speed reversing valve according to claim 5, characterized in that, The limiting structure includes a limiting groove (521) and a limiting block (181). One of the piston cylinder (180) and the slider (520) is provided with the limiting block (181), and the other is provided with the limiting groove (521). The limiting block (181) can be inserted into the limiting groove (521) to limit the rotation of the slider (520).

7. The adjustable speed reversing valve according to claim 5, characterized in that, The piston cylinder (180) is provided with a first through hole (182). The first through hole (182) communicates the water inlet (120) with the water inlet cavity (210), and the piston cylinder (180) is provided with a one-way valve (183). The one-way valve (183) only allows the fluid to flow out of the piston cylinder (180) from the water inlet cavity (210).

8. The adjustable speed reversing valve according to claim 1, characterized in that, The reset mechanism includes an elastic member (300). One end of the elastic member (300) abuts against the valve body (100), and the other end abuts against the bottom of the piston member (200). The elastic member (300) can drive the piston member (200) to move upwards.

9. The adjustable speed reversing valve according to claim 1, characterized in that, The commutation structure (400) includes a first baffle (410) and a second baffle (420). The first baffle (410) is provided with a first opening (411), and the second baffle (420) is provided with a second opening (421). In the first position, the second opening (421) communicates with the second water outlet (140). In the second position, the first opening (411) communicates with the first water outlet (130).

10. The adjustable speed reversing valve according to claim 9, characterized in that, The first water outlet (130) and the second water outlet (140) are relatively arranged on both sides of the valve body (100). The first baffle (410) and the second baffle (420) are relatively arranged. An elastic structural member (430) is provided between the first baffle (410) and the second baffle (420). The elastic structural member (430) can drive the first baffle (410) and the second baffle (420) to press against the inner wall of the valve body (100).

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