Multi-channel reversing valve

Abstract

The utility model provides a multichannel reversing valve which comprises a shell, a water inlet channel, a plurality of water outlet channels, a motor assembly and a shaft sleeve assembly, the water inlet channel and the water outlet channels are arranged on the shell, the shaft sleeve assembly comprises a rotating shaft sleeve directly driven by a motor rotating shaft and a water sealing disc connected with the rotating shaft sleeve, and the water sealing disc is provided with a flow guide notch. The water sealing disc is located between the water inlet channel and the multiple water outlet channels so that the water inlet channel and any water outlet channel can be communicated through the flow guide notch. The motor rotating shaft drives the water sealing disc to rotate through the rotating shaft sleeve so as to switch the position of the flow guide notch, and then the water outlet channel communicated with the water inlet channel is switched. According to the device, the motor rotating shaft of the stepping motor directly drives the shaft sleeve assembly to rotate forwards and backwards, rotation of the water sealing disc is achieved, matching parts are reduced, the assembly efficiency is higher, the response speed is higher, stable switching of flow channels can be achieved during rotation of the water sealing disc, the overall structure is simple, installation is convenient, and the effect is stable.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a multi-channel directional valve. Background Technology

[0002] Multi-channel directional valves are components used in home appliances to change the flow direction of fluid outlets, especially in washing machines, dryers, and smart toilets. In existing technologies, directional valves generally use a motor to drive an adapter, which in turn drives the water sealing plate to rotate, thus switching the water outlet channel. However, this switching method increases the response time, and there are many axial mating parts, resulting in poor control of the rotational runout of the rotating shaft and a high water leakage rate.

[0003] To solve the above-mentioned technical problems, the applicant has designed a multi-channel reversing valve, which directly drives the bushing to rotate via a stepper motor, thereby driving the sealing plate to rotate. This allows for rapid and stable switching of flow channels, thus realizing the reversal of multiple fluid channels. The valve has a simple and stable structure. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of existing technologies and provide a multi-channel reversing valve. This valve uses a stepper motor to drive the rotation of the bushing and sealing plate, and simultaneously utilizes the timing control of the stepper motor to perform forward and reverse rotation, thus completing the switching of water output from multiple channels. The technical solution adopted by this invention is as follows:

[0005] A multi-channel reversing valve includes a housing, an inlet channel and several outlet channels disposed on the housing, and a motor assembly and a bushing assembly. The bushing assembly includes a shaft bushing directly driven by a motor shaft and a sealing plate connected to the shaft bushing. The sealing plate has a guide groove. The sealing plate is located between the inlet channel and several outlet channels, so that the guide groove connects the inlet channel and any one of the outlet channels. The motor shaft drives the sealing plate to rotate through the shaft bushing to change the position of the guide groove, thereby switching the outlet channel connected to the inlet channel.

[0006] Preferably, the motor shaft is driven by a stepper motor.

[0007] Furthermore, the rotating shaft sleeve includes an upper connecting part connected to the motor rotating shaft. The upper connecting part extends into the sleeve limiting hole of the upper housing. A sleeve sealing ring is provided between the upper connecting part of the rotating shaft sleeve and the sleeve limiting hole. The sleeve sealing ring is embedded in the sleeve groove. The sleeve sealing ring is located close to the motor rotating shaft, rather than far from the output shaft end. This design can reduce motor losses and correspondingly reduce motor torque, thereby reducing the cost of the motor.

[0008] Preferably, the upper connecting part of the rotating shaft sleeve has a linkage insertion hole, and the motor shaft extends into the linkage insertion hole of the rotating shaft sleeve to drive the rotating shaft sleeve to rotate coaxially.

[0009] Preferably, the upper connecting part has a protruding rotation limiting rib on its outer periphery, and the bushing limiting hole has a limiting protrusion on its inner wall. The limiting protrusion limits the rotation limiting rib, thereby restricting the rotational stroke of the rotating shaft bushing.

[0010] Furthermore, it also includes a guide plate with several openings to connect to several water outlet channels. A spring is fitted at the lower end of the rotating shaft sleeve. The spring is positioned between the rotating shaft sleeve and the sealing plate and pushes the sealing plate to contact the plane of the guide plate. The sealing plate rotates relative to the guide plate, so that the guide groove corresponds to different openings on the guide plate to connect the water inlet channel and any water outlet channel. Under the push of the spring, the sealing plate and the guide plate are in contact, thereby reducing the problem of water crossing between channels during rotation.

[0011] Preferably, the rotating shaft sleeve includes an upper connecting part connected to the motor rotating shaft, a lower connecting part connected to the water sealing plate, and a spring limiting section located between the upper connecting part and the lower connecting part. The spring is sleeved on the outer periphery of the spring limiting section and limited between the upper connecting part and the water sealing plate.

[0012] Furthermore, a mounting base is provided protruding from the surface of the water sealing plate, and the lower connecting part of the rotating shaft sleeve passes through the mounting base until it extends into the groove on the upper surface of the guide plate; the spring is sleeved on the spring limiting section and the outer periphery of the mounting base and is limited between the upper connecting part and the water sealing plate.

[0013] Preferably, the rotating shaft sleeve includes an upper connecting part connected to the motor shaft, a lower connecting part connected to the water sealing plate, and a radial positioning section located between the upper connecting part and the lower connecting part. The outer periphery of the radial positioning section is provided with a sleeve limiting rib. The sleeve limiting rib cooperates with the inner wall of the upper housing to radially limit the rotating shaft sleeve. The corresponding mating position of the sleeve limiting rib is the inner ring of the upper housing. The inner ring of the upper housing is a whole circumferential surface. Through the cooperation of the two, a good four-dimensional limiting can be formed, which can ensure that the motor shaft remains stable during rotation and solve the problem of rotational runout caused by the deep axial position.

[0014] Preferably, the housing includes an upper housing on which a motor assembly and a bushing assembly are installed, and a lower housing with a plurality of water outlet channels. The connection between the upper housing and the lower housing is stepped and an O-ring is provided at the stepped connection.

[0015] As one embodiment, the plurality of water outlet channels include a first water outlet channel and a second water outlet channel arranged horizontally in parallel, and a third water outlet channel and a fourth water outlet channel arranged vertically in parallel. The above four water outlet channels are respectively connected to four openings on a planar guide plate. The water sealing plate is rotatable relative to the guide plate and cooperates with the plane of the guide plate.

[0016] The beneficial effects of this utility model are as follows: This device directly drives the forward and reverse rotation of the bushing assembly through the motor shaft of the stepper motor to realize the rotation of the water sealing plate, reducing the number of mating parts, reducing assembly control requirements, and providing a faster response speed; the guide groove on the water sealing plate connects the water inlet channel and any one of the several water outlet channels, and can achieve stable switching of the flow channel during rotation. The overall structure is simple, easy to install, and has a stable effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0018] Figure 1 This is a three-dimensional appearance diagram of an embodiment;

[0019] Figure 2 Exploded view of an example;

[0020] Figure 3 This is a cross-sectional view of an embodiment;

[0021] Figure 4 This is a cross-sectional view from another angle of the embodiment;

[0022] Figure 5 A schematic diagram of the bushing assembly;

[0023] Figure 6 This is an exploded view of the bushing assembly;

[0024] In the diagram, 1-motor assembly, 11-motor shaft, 2-upper housing, 201-shaft sleeve limiting hole, 21-water inlet channel, 3-lower housing, 31-water outlet channel, 31a-first water outlet channel, 31b-second water outlet channel, 31c-third water outlet channel, 31d-fourth water outlet channel, 32-guide plate, 4-shaft sleeve assembly, 41-shaft sleeve, 411-rotation limiting rib, 412-shaft sleeve groove, 4121-shaft sleeve sealing ring, 413-shaft sleeve limiting rib, 414-spring limiting section, 42-spring, 43-sealing plate, 431-guide groove, 432-mounting base, 5-O-ring seal. Detailed Implementation

[0025] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0026] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0027] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0028] Example

[0029] like Figure 1-2 As shown, a multi-channel reversing valve includes a housing, an inlet channel 21 disposed on the housing, and several outlet channels 31. It also includes a stepper motor assembly 1 and a bushing assembly 4. The bushing assembly 4 includes a rotating shaft bushing 41 directly driven by a motor shaft 11 and a sealing plate 43 connected to the rotating shaft bushing 41. The sealing plate 43 has a flow guide groove 431. The sealing plate 43 is located between the inlet channel 21 and several outlet channels, so that the flow guide groove 431 connects the inlet channel and any one of the outlet channels 31. The motor shaft 11 drives the sealing plate 43 to rotate through the rotating shaft bushing 41 to change the position of the flow guide groove 431, thereby switching the outlet channel 31 connected to the inlet channel 21.

[0030] This device directly drives the bushing assembly 4 to rotate in both directions via the stepper motor shaft, thereby rotating the water sealing plate 43. This reduces the number of mating parts, resulting in a faster response speed. It allows the guide groove 431 on the water sealing plate 43 to connect the inlet channel and any one of the several outlet channels, and enables stable switching of the flow channels during rotation. The overall structure is simple, easy to install, and provides stable performance.

[0031] Furthermore, the rotating shaft sleeve 41 includes an upper connecting part connected to the motor rotating shaft 11, a lower connecting part connected to the water sealing plate 43, and a spring limiting section 414 located between the upper connecting part and the lower connecting part. The spring 42 is sleeved on the outer periphery of the spring limiting section 414 and limited between the upper connecting part and the water sealing plate 43.

[0032] like Figure 3As shown, the upper connecting part of the rotating shaft sleeve 41 extends into the sleeve limiting hole 201 of the upper housing 2, and a rotation limiting rib 411 protrudes from the outer periphery of the upper connecting part. A limiting protrusion is provided on the inner wall of the sleeve limiting hole 201. The limiting protrusion limits the rotation limiting rib 411 and thus restricts the rotation stroke of the rotating shaft sleeve 41.

[0033] In this embodiment, the upper connecting part of the rotating shaft sleeve 41 has a linkage insertion hole, and the stepper motor shaft 11 extends into the linkage insertion hole of the rotating shaft sleeve 41 to drive the rotating shaft sleeve 41 to rotate coaxially.

[0034] like Figure 4 , 5 As shown in Figure 6, a bushing seal ring 4121 is provided between the upper connecting part of the rotating shaft bushing 41 and the bushing limiting hole 201. The bushing seal ring 4121 is embedded in the bushing groove 412. The bushing seal ring is located close to the motor rotating shaft, rather than far from the output shaft end. This design can reduce motor losses and correspondingly reduce motor torque, thereby reducing the cost of the motor.

[0035] Furthermore, a mounting base 432 is provided protruding from the surface of the water sealing plate 43, and the lower connecting part of the rotating shaft sleeve 41 passes through the mounting base 432 until it extends into the groove on the upper surface of the guide plate 32; the spring 42 is sleeved on the outer periphery of the spring limiting section 414 and the mounting base 432 and is limited between the upper connecting part and the water sealing plate 43.

[0036] like Figure 2 , 5 As shown in Figure 6, the system also includes a guide plate 32, which has several openings to connect to several water outlet channels 31. A spring 42 is fitted at the lower end of the rotating shaft sleeve 41. The spring 42 is positioned between the rotating shaft sleeve 41 and the sealing plate 43 and pushes the sealing plate 43 to make contact with the plane of the guide plate 32. The sealing plate 43 rotates relative to the guide plate 32, so that the guide groove 431 corresponds to different openings on the guide plate 32 to connect the water inlet channel 21 and any water outlet channel 31. Under the push of the spring, the sealing plate and the guide plate 32 are in plane contact, thereby reducing the problem of water crossing between channels during rotation.

[0037] Specifically, the housing includes an upper housing 2 on which a motor assembly 1 and a bushing assembly 4 are installed, and a lower housing 3 comprising several water outlet channels 31. The connection between the upper housing 2 and the lower housing 3 is stepped, and an O-ring seal 5 is provided at the stepped connection. Figure 4 ).

[0038] In this embodiment, the plurality of water outlet channels 31 include a first water outlet channel 31a and a second water outlet channel 31b located on the same horizontal line and respectively facing both ends, and a third water outlet channel 31c and a fourth water outlet channel 31d arranged vertically side by side. The above four water outlet channels are respectively connected to four openings on the planar guide plate 32. The water sealing plate 43 is rotatable relative to the guide plate 32 and cooperates with the plane of the guide plate 32.

[0039] like Figure 5 As shown, a radial positioning section is provided above the spring limiting section 414. A bushing limiting rib 413 protrudes from the outer periphery of the radial positioning section. The bushing limiting rib 413 cooperates with the inner wall of the upper housing 2 to radially limit the rotating shaft bushing 41. The diameter of the radial positioning section with the bushing limiting rib 413 is larger than the diameter of the spring limiting section 414, so that the spring 42 is limited between the radial positioning section and the sealing plate 43. The corresponding mating position of the bushing limiting rib is the inner ring of the upper housing. The inner ring of the upper housing is a whole circumferential surface. Through the cooperation of the two, a good four-dimensional limit can be formed, which can ensure that the motor shaft remains stable during rotation and solve the problem of rotational runout caused by the deep axial position.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-channel reversing valve, comprising a housing, an inlet channel (21) disposed on the housing, and a plurality of outlet channels (31), characterized in that: It also includes a motor assembly (1) and a bushing assembly (4). The bushing assembly (4) includes a shaft bushing (41) directly driven by the motor shaft (11) and a water sealing plate (43) connected to the shaft bushing (41). The water sealing plate (43) has a flow guide groove (431). The water sealing plate (43) is located between the water inlet channel (21) and several water outlet channels, so that the flow guide groove (431) connects the water inlet channel and any water outlet channel (31). The motor shaft (11) drives the sealing plate (43) to rotate through the shaft sleeve (41) to change the position of the guide slot (431), thereby switching the water outlet channel (31) connected to the water inlet channel (21).

2. The multi-channel directional valve according to claim 1, characterized in that: The rotating shaft sleeve (41) includes an upper connecting part that is connected to the motor rotating shaft (11). The upper connecting part extends into the sleeve limiting hole (201) of the upper housing (2). A sleeve sealing ring (4121) is provided between the upper connecting part of the rotating shaft sleeve (41) and the sleeve limiting hole (201). The sleeve sealing ring (4121) is embedded in the sleeve groove (412).

3. A multi-channel directional valve according to claim 2, characterized in that: The upper connecting part of the rotating shaft sleeve (41) has a linkage insertion hole, and the motor shaft (11) extends into the linkage insertion hole of the rotating shaft sleeve (41) to drive the rotating shaft sleeve (41) to rotate coaxially.

4. A multi-channel directional valve according to claim 2, characterized in that: The upper connecting part is provided with a rotation limiting rib (411) protruding from the outer periphery, and the bushing limiting hole (201) is provided with a limiting protrusion. The limiting protrusion limits the rotation limiting rib (411) and thus restricts the rotation stroke of the rotating shaft bushing (41).

5. A multi-channel directional valve according to claim 1, characterized in that: It also includes a guide plate (32), on which several openings are provided to connect several water outlet channels (31) respectively. A spring (42) is sleeved on the lower end of the rotating shaft sleeve (41). The spring (42) is located between the rotating shaft sleeve (41) and the sealing plate (43) and pushes the sealing plate (43) to make planar contact with the guide plate (32).

6. A multi-channel directional valve according to claim 5, characterized in that: The rotating shaft sleeve (41) includes an upper connecting part connected to the motor rotating shaft (11), a lower connecting part connected to the sealing water plate (43), and a spring limiting section (414) located between the upper connecting part and the lower connecting part. The spring (42) is sleeved on the outer periphery of the spring limiting section (414) and limited between the upper connecting part and the sealing water plate (43).

7. A multi-channel directional valve according to claim 6, characterized in that: The sealing plate (43) has a protruding mounting base (432) on its surface. The lower connecting part of the rotating shaft sleeve (41) passes through the mounting base (432) and extends into the groove on the upper surface of the guide plate (32). The spring (42) is sleeved on the spring limiting section (414) and the outer periphery of the mounting base (432) and is limited between the upper connecting part and the sealing plate (43).

8. A multi-channel directional valve according to claim 1, characterized in that: The rotating shaft sleeve (41) includes an upper connecting part connected to the motor rotating shaft (11), a lower connecting part connected to the water sealing plate (43), and a radial positioning section located between the upper connecting part and the lower connecting part. The outer periphery of the radial positioning section is provided with a sleeve limiting rib (413). The sleeve limiting rib (413) cooperates with the inner wall of the upper housing (2) to radially limit the rotating shaft sleeve (41).

9. A multi-channel directional valve according to claim 1, characterized in that: The housing includes an upper housing (2) on which a motor assembly (1) and a bushing assembly (4) are installed, and a lower housing (3) which has a plurality of water outlet channels (31). The upper housing (2) and the lower housing (3) are connected in a stepped manner and an O-ring (5) is provided at the stepped manner.

10. A multi-channel directional valve according to any one of claims 1-9, characterized in that: The plurality of water outlet channels (31) include a first water outlet channel (31a) and a second water outlet channel (31b) arranged horizontally in parallel, and a third water outlet channel (31c) and a fourth water outlet channel (31d) arranged vertically in parallel. The above four water outlet channels are respectively connected to four openings on the planar guide plate (32). The sealing plate (43) is rotatable relative to the guide plate (32) and cooperates with the planar surface of the guide plate (32).

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