A multifunctional washing machine combination valve

Abstract

The present invention relates to the technical field of washing machine inlet and drain valves, and in particular to a multifunctional washing machine combination valve, comprising a water supply valve assembly, which comprises a water inlet valve body, a water inlet pipe and a water supply pipe arranged on the water inlet valve body, and a sealing cover arranged at one end of the water inlet valve body. A first chamber and a second chamber are provided inside the water inlet valve body, and the first chamber and the second chamber are communicated, the water inlet pipe is communicated with the first chamber, and the water supply pipe is communicated with the second chamber. A third chamber is provided on the sealing cover, and a movable skeleton is movably installed in the third chamber. A movable diaphragm is fixedly installed on the side of the movable skeleton close to the water inlet valve body, and a constant pressure hole and a pressure relief hole are provided on the movable skeleton. The present invention adjusts the position of the sealing piston by a driving assembly to realize water inlet, water shut-off and water drainage of the washing machine, thereby reducing the complexity of installing the washing machine inlet and drain valve body and improving and reducing the manufacturing and subsequent maintenance costs.

Description

Technical Field

[0001] The invention relates to the technical field of washing machine inlet and outlet valves, in particular to a multifunctional washing machine combination valve. Background Art

[0002] A washing machine is a household appliance used to wash clothes. It usually includes a washing tub, an inlet valve, a drain valve, a motor, a control panel and other components. Water is added to the washing tub through the inlet valve. When the internal water level reaches the appropriate position, the inlet valve closes, and then the washing tub rotates to wash the clothes. After washing is completed, the drain valve opens to discharge the sewage. In this process, the water inlet and drain of the washing machine are controlled by two valves, the inlet valve and the drain valve. The design of the two valves requires a large space for installation in the washing machine, and the independent inlet valve and drain valve increase the complexity of the washing machine system. Additional pipe connections and control systems are required to realize the water inlet and drain functions, which increases the number of parts and subsequent maintenance costs. In order to solve this problem, we propose a multifunctional washing machine combination valve. Summary of the Invention

[0003] The present invention is proposed in view of the problems that the washing machines mentioned above or in the prior art use independent water inlet valves and drain valves, which take up a large space during installation, increase the complexity of the washing machine system, and increase the number of parts and subsequent maintenance costs.

[0004] Therefore, an object of the present invention is to provide a multifunctional washing machine combination valve.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a multifunctional washing machine combination valve, including a water supply valve assembly, which includes a water inlet valve body, a water inlet pipe and a water supply pipe arranged on the water inlet valve body, and a cover arranged at one end of the water inlet valve body, wherein a first chamber and a second chamber are opened inside the water inlet valve body, and the first chamber and the second chamber are connected, the water inlet pipe is connected to the first chamber, and the water supply pipe is connected to the second chamber, a third chamber is opened on the cover, and a movable frame is movably installed in the third chamber, and the movable frame is close to the water inlet valve. A dynamic diaphragm is fixedly installed on one side of the body, a constant pressure hole and a pressure relief hole are provided on the movable frame, and a dynamic sealing gasket is provided at the pressure relief hole, a drain valve assembly, which includes a drain valve body arranged at the end of the water inlet valve body away from the sealing cover, a fourth chamber provided in the drain valve body, a support plate provided in the fourth chamber, a water-closing chamber column welded to the support plate, and a downpipe and a drain pipe provided on the side wall of the drain valve body, the downpipe and the water-closing chamber column are connected, and a sealing piston is provided in the water-closing chamber column, and the drain pipe and the fourth chamber are connected.

[0006] As a preferred solution of the multifunctional washing machine combination valve of the present invention, a spring cavity column is provided on the cover, and a return spring is provided in the spring cavity column, and the return spring pushes the sealing gasket to seal the pressure relief hole.

[0007] As a preferred solution of the multifunctional washing machine combination valve of the present invention, a partition plate is provided between the first chamber and the second chamber, and a connecting pipe is provided at the axial center of the partition plate, and the connecting pipe and the pressure relief hole are coaxial.

[0008] As a preferred solution of the multifunctional washing machine combination valve of the present invention, wherein: a movable push rod is provided at the end of the dynamic sealing gasket away from the reset spring, and the movable push rod passes through the pressure relief hole and is movably provided in the connecting pipe, a limiting block is provided in an annular array at one end of the connecting pipe away from the pressure relief hole, and a sealing column is movably installed in the limiting block in the annular array, and a pad is provided on the inner wall of the limiting block in the annular array close to the end of the connecting pipe.

[0009] As a preferred solution of the multifunctional washing machine combination valve of the present invention, the water-blocking chamber column is connected to the fourth chamber, and a through hole is provided at one end of the water-blocking chamber column facing the second chamber, a push rod is movably installed in the through hole, and the push rod passes through the through hole into the second chamber and is fixedly connected to one end of the sealing column.

[0010] As a preferred solution of the multifunctional washing machine combination valve of the present invention, a microfiltration lining is provided at the water inlet of the water inlet pipe, and a magnetic blade is rotatably installed between the microfiltration lining and the connecting pipe, and an accommodating cavity is opened on the side wall of the water inlet valve body, and a Hall chip corresponding to the magnetic blade is fixedly installed in the accommodating cavity.

[0011] As a preferred solution of the multifunctional washing machine combination valve of the present invention, it also includes a driving assembly, which includes a motor fixing seat fixedly installed on one side of the drain valve body, a guide sleeve is provided at one end of the motor fixing seat close to the drain valve body, and a limit plate is provided in the inner cavity of the motor fixing seat.

[0012] As a preferred solution of the multifunctional washing machine combination valve of the present invention, the driving assembly further comprises a stepping motor arranged on one side of the motor fixing seat, an eccentric shaft arranged on the output shaft of the stepping motor, and a driving member movably mounted with the guide sleeve.

[0013] As a preferred solution of the multifunctional washing machine combination valve of the present invention, the driving member includes a piston guide rod movably installed in the guide sleeve, a push rod arranged at one end of the piston guide rod, and a waist-shaped ring arranged at the other end of the piston guide rod.

[0014] As a preferred solution of the multifunctional washing machine combination valve of the present invention, a guide surface is provided at the opening of the water-closing chamber column.

[0015] The beneficial effects of the multifunctional washing machine combination valve of the present invention are as follows: the present invention combines the water supply valve assembly and the drain valve assembly together, and then adjusts the position of the sealing piston through the driving assembly to realize water intake, water shutoff and drainage of the washing machine, thereby reducing the complexity of the installation of the washing machine's water supply and drainage valve body, and also improving and reducing the manufacturing and subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is an overall schematic diagram of the combination valve of a multi-functional washing machine.

[0018] Figure 2 This is a schematic diagram of the internal structure of the upper water inlet valve body of the multi-function washing machine combination valve.

[0019] Figure 3 This is a schematic diagram of the internal structure of the drain valve body of a multi-functional washing machine combination valve.

[0020] Figure 4 Schematic diagram of the internal structure of the water supply valve assembly and the drain valve assembly.

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the drain valve body and the motor fixing seat.

[0023] Reference numerals: 100, water supply valve assembly; 101, water inlet valve body; 101a, water inlet pipe; 101b, water supply pipe; 101c, first chamber; 101d, second chamber; 101e, partition plate; 101f, connecting pipe; 101g, limit block; 101h, cushion block; 102, cover; 102a, third chamber; 102b, spring chamber column; 102c, return spring; 103, movable skeleton; 103a, constant pressure hole; 103b, pressure relief hole; 104, dynamic diaphragm; 105, dynamic sealing gasket; 105a, movable push rod; 106, sealing column; 107, push rod; 108, microfiltration inner Lining; 109, magnetic blade; 110, Hall chip; 200, drain valve assembly; 201, drain valve body; 201a, fourth chamber; 201b, support plate; 201c, closed water chamber column; 201c-1, through hole; 201c-2, guide surface; 201d, sewer pipe; 201e, drain pipe; 201f, sealing piston; 300, drive assembly; 301, motor fixing seat; 301a, guide sleeve; 301b, limit plate; 302, stepping motor; 303, eccentric shaft; 304, drive member; 304a, piston guide rod; 304b, push rod; 304c, waist ring. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0027] Example 1, reference Figures 1 to 5, which is the first embodiment of the present invention, provides a multifunctional washing machine combination valve, which can achieve the effect of water inlet for the washing machine, including a water supply valve assembly 100, which includes a water inlet valve body 101, a water inlet pipe 101a and a water supply pipe 101b provided on the water inlet valve body 101, and a cover 102 provided at one end of the water inlet valve body 101. The water inlet valve body 101 is provided with a first chamber 101c and a second chamber 101d, and the first chamber 101c and the second chamber 101d are provided with a first chamber 101c and a second chamber 101d. d is connected, the water inlet pipe 101a is connected with the first chamber 101c, the water supply pipe 101b is connected with the second chamber 101d, the cover 102 is provided with a third chamber 102a, and a movable skeleton 103 is movably installed in the third chamber 102a, a movable diaphragm 104 is fixedly installed on the side of the movable skeleton 103 close to the water inlet valve body 101, a constant pressure hole 103a and a pressure relief hole 103b are provided on the movable skeleton 103, and a dynamic sealing gasket 105 is provided at the pressure relief hole 103b.

[0028] In this embodiment, the water inlet pipe 101a is connected to tap water, and the tap water enters the first chamber 101c through the water inlet pipe 101a. The movable diaphragm 104 and the movable frame 103 are arranged between the water inlet valve body 101 and the cover 102. When the water inlet valve body 101 and the cover 102 are fixedly connected, the corners of the movable diaphragm 104 are clamped so that the edge of the movable diaphragm 104 is used as a seal between the water inlet valve body 101 and the cover 102. Two mounting holes are provided on the movable diaphragm 104, and the constant pressure hole 103a and the pressure relief hole 103b on the movable frame 103 are both tubular protrusions, which are respectively matched with the two mounting holes on the movable diaphragm 104.

[0029] Specifically, a spring chamber column 102 b is provided on the cover 102 , and a return spring 102 c is provided in the spring chamber column 102 b . The return spring 102 c pushes the sealing gasket 105 to block the pressure relief hole 103 b .

[0030] A partition plate 101e is provided between the first chamber 101c and the second chamber 101d, and a connecting pipe 101f is provided at the axial center of the partition plate 101e. The connecting pipe 101f and the pressure relief hole 103b are coaxial.

[0031] In the initial state, the return spring 102c pushes the dynamic sealing gasket 105 to squeeze the movable skeleton 103, so that the tubular protruding pressure relief hole 103b is inserted into the connecting pipe 101f, and the connecting pipe 101f and the movable diaphragm 104 are sealed together, so that tap water cannot directly enter the second chamber 101d from the first chamber 101c. At this time, the water flow in the first chamber 101c will first flow into the third chamber 102a through the constant pressure hole 103a. When the third chamber 102a is full of water, its water pressure will push the movable skeleton 103 toward the connecting pipe 101f, thereby improving the sealing between the connecting pipe 101f and the movable diaphragm 104. At this time, the water pressure in the first chamber 101c and the third chamber 102a is balanced.

[0032] Push the dynamic sealing gasket 105 toward the spring chamber column 102b, so that the dynamic sealing gasket 105 opens the pressure relief hole 103b. At this time, the third chamber 102a and the second chamber 101d are connected, and the water in the third chamber 102a flows into the connecting pipe 101f from the pressure relief hole 103b, breaking the water pressure balance in the first chamber 101c and the third chamber 102a, so that the water pressure of the first chamber 101c pushes the dynamic diaphragm 104 toward the third chamber 102a, so that the water in the first chamber 101c flows into the second chamber 101d through the connecting pipe 101f, and then enters the washing tub from the water supply pipe 101b to complete the water supply.

[0033] It should be noted that the center part of the movable diaphragm 104 matches the movable skeleton 103, and the position from the center part to the sealing edge is U-shaped and stacked, so that when the pressures of the first chamber 101c and the third chamber 102a are different, the movement of the movable skeleton 103 can drive the movable diaphragm 104 to move, so that the tap water in the first chamber 101c can enter the second chamber 101d connected to it.

[0034] Furthermore, a microfiltration lining 108 is provided at the water inlet of the water inlet pipe 101a, and a magnetic blade 109 is rotatably installed between the microfiltration lining 108 and the connecting pipe 101f. A accommodating cavity is opened on the side wall of the water inlet valve body 101, and a Hall chip 110 corresponding to the magnetic blade 109 is fixedly installed in the accommodating cavity.

[0035] Furthermore, by setting a magnetic blade 109 at the water inlet pipe 101a, the magnetic blade 109 is driven to rotate when water flows in to generate a magnetic field, and then the corresponding Hall chip 110 is used to calculate the amount of water entering the washing tub.

[0036] Example 2, reference Figures 1 to 5, which is the second embodiment of the present invention. Different from the previous embodiment, it can achieve the effect of shutting off the water supply to the washing machine, and includes a drain valve assembly 200, which includes a drain valve body 201 disposed at the end of the water inlet valve body 101 away from the cover 102, a fourth chamber 201a provided in the drain valve body 201, a support plate 201b disposed in the fourth chamber 201a, a water-blocking chamber column 201c welded to the support plate 201b, and a downpipe 201d disposed on the side wall of the drain valve body 201. It is connected to the drain pipe 201e, the sewer pipe 201d and the closed water chamber column 201c, and a sealing piston 201f is provided in the closed water chamber column 201c. The drain pipe 201e is connected to the fourth chamber 201a. The drain valve body 201 and the water inlet valve body 101 are socketed and then fixedly connected by fixing bolts, and a sealing ring is provided at the socket. When the drain valve body 201 is socketed on one end of the water inlet valve body 101, the Hall chip 110 provided outside the water inlet valve body 101 is blocked, but a gap for the wire is left.

[0037] The water-blocking chamber column 201c is connected to the fourth chamber 201a, and a through hole 201c-1 is opened at one end of the water-blocking chamber column 201c facing the second chamber 101d. A push rod 107 is movably installed in the through hole 201c-1, and the push rod 107 passes through the through hole into the second chamber 101d and is fixedly connected to one end of the sealing column 106.

[0038] A movable push rod 105a is provided at the end of the dynamic sealing gasket 105 away from the return spring 102c, and the movable push rod 105a passes through the pressure relief hole 103b and is movably provided in the connecting pipe 101f. A limiting block 101g is provided in an annular array at one end of the connecting pipe 101f away from the pressure relief hole 103b, and a sealing column 106 is movably installed in the annular array limiting block 101g. A pad 101h is provided on the inner wall of the annular array limiting block 101g close to the end of the connecting pipe 101f.

[0039] In this embodiment, the push rod 107 and the through hole 201c-1 are coaxially matched and plugged in, and the sealing column 106 and the inner wall of the limit block 101g of the annular array are fitted together and are also coaxially arranged, so that the push rod 107 and the sealing column 106 are still coaxial when connected together, so that when the dynamic sealing gasket 105 moves to push the push rod 107, it is a stable linear movement.

[0040] Among them, the setting of the pad 101h is to prevent the sealing column 106 from blocking one end of the connecting pipe 101f when the dynamic sealing gasket 105 pushes the push rod 107 and the sealing column 106 to move, resulting in the water in the first chamber 101c being unable to enter the second chamber 101d. The gaps between the multiple limit blocks 101g of the annular array can provide water flow.

[0041] The rest of the structure is the same as that of Example 1.

[0042] When water enters the washing tub, the movable push rod 105a is pushed by moving the sealing piston 201f, thereby causing the dynamic sealing gasket 105 to move and open the pressure relief hole 103b. The water entering the washing tub will enter the cavity of the closed water chamber column 201c along the downpipe 201d. The position of the sealing piston 201f after movement is located in the closed water chamber column 201c and does not exceed the pipe mouth of the downpipe 201d connected thereto, so that the water in the washing tub will not be discharged, and the water inflow steadily increases. After the water inflow reaches the specified value, the sealing piston 201f is moved in the closed water chamber column 201c toward the fourth chamber 201a. At this time, the return spring 102c pushes the dynamic sealing gasket 105 to block the pressure relief hole 103b, and at the same time pushes the dynamic diaphragm 104 toward the connecting pipe 101f and seals it. The first chamber 101c and the third chamber 102a return to the water pressure equilibrium state, so that the water flow in the washing tub is in a closed loop state.

[0043] It should be noted that by providing a movable frame 103 and a dynamic diaphragm 104 in the water supply valve assembly 100, when the water is closed, the movable frame 103 and the dynamic diaphragm 104 block the port of the connecting pipe 101f, and the dynamic sealing gasket 105 blocks the pressure relief hole 103b on the movable frame 103. When the dynamic sealing gasket 105 is pushed to open the pressure relief hole 103b, due to the small aperture of the pressure relief hole 103b, the pressure of the water flow on the dynamic sealing gasket 105 is relatively small, making it easier to drive the dynamic sealing gasket 105 to open. If the dynamic sealing gasket 105 is used to block the port of the connecting pipe 101f, due to the aperture of the connecting pipe 101f is much larger than the aperture of the pressure relief hole 103b, the pressure on the dynamic sealing gasket 105 is relatively large, which makes the dynamic sealing gasket 105 difficult to open. When the tap water pressure is high, the dynamic sealing gasket 105 may not be able to open, resulting in the washing machine being unable to take in water.

[0044] Example 3, reference Figures 1 to 6 , which is the third embodiment of the present invention. Different from the previous embodiment, it also includes a driving assembly 300, which includes a motor fixing seat 301 fixedly installed on one side of the drain valve body 201, and a guide sleeve 301a is provided at one end of the motor fixing seat 301 close to the drain valve body 201, and a limiting plate 301b is provided in the inner cavity of the motor fixing seat 301.

[0045] The driving assembly 300 further includes a stepping motor 302 disposed on one side of the motor fixing base 301 , an eccentric shaft 303 disposed on the output shaft of the stepping motor 302 , and a driving member 304 movably mounted on the guide sleeve 301 a .

[0046] The driving member 304 includes a piston guide rod 304a movably installed in the guide sleeve 301a, a push rod 304b arranged at one end of the piston guide rod 304a, and a waist-shaped ring 304c arranged at the other end of the piston guide rod 304a.

[0047] In this embodiment, the motor fixing seat 301 and the drain valve body 201 are sleeved and then fixed by bolts, and a sealing ring is provided inside. After the motor fixing seat 301 and the drain valve body 201 are installed, the guide sleeve 301a is located in the fourth chamber 201a of the drain valve body 201 and is coaxial with the water-blocking chamber column 201c. The limit plate 301b is symmetrically arranged with two upper and lower pieces about the inner cavity axis of the motor fixing seat 301. The waist-shaped ring 304c is arranged in the inner cavity of the motor fixing seat 301 and fits the limit plate 301b. The end of the push rod 304b away from the piston guide rod 304a is fixedly connected to the sealing piston 201f. The stepping motor 302 drives the eccentric shaft 303 to rotate, and the shaft of the eccentric shaft 303 moves in the waist-shaped ring 304c, driving the waist-shaped ring 304c to move along the axial direction of the piston guide rod 304a, thereby causing the sealing piston 201f to move along the water-blocking chamber column 201c.

[0048] Specifically, when the water is closed, the sealing piston 201f is located at the opening of the water-closing chamber column 201c and still seals the water-closing chamber column 201c. When draining, the sealing piston 201f is separated from the water-closing chamber column 201c, so that the water-closing chamber column 201c and the fourth chamber 201a are connected, so that the closed-loop water in the washing tub enters the fourth chamber 201a from the water-closing chamber column 201c, and is then discharged through the drain pipe 201e.

[0049] Among them, when the piston guide rod 304a drives the sealing piston 201f to move and adjusts the water inlet, water shut-off and water drainage states, the sealing part of the piston guide rod 304a is always located in the guide sleeve 301a, which avoids the fourth chamber 201a entering the motor fixing seat 301 during drainage, causing water inflow failure of the stepping motor 302 on the side of the motor fixing seat 301. A guide surface 201c-2 is provided at the opening of the water shut-off chamber column 201c.

[0050] In this embodiment, by setting the guide surface 201c-2, after drainage, the piston guide rod 304a is easier to guide when driving the sealing piston 201f into the closed water chamber column 201c, reducing damage to the rubber ring caused by friction.

[0051] The rest of the structure is the same as that of Example 2.

[0052] It is important to note that the construction and arrangement of the present application, as illustrated in various exemplary embodiments, are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure will readily appreciate that numerous modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various components, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, components shown as integrally formed may be constructed from multiple parts or components, the positions of components may be inverted or otherwise altered, and the nature, number, or position of discrete components may be modified or changed. All such modifications are therefore intended to be encompassed within the scope of this invention. The order or sequence of any process or method steps may be altered or resequenced according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover structures described herein that perform the recited function, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of this invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0054] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multifunctional washing machine combination valve, characterized by: include, A water supply valve assembly (100) comprises a water inlet valve body (101), a water inlet pipe (101a) and a water supply pipe (101b) arranged on the water inlet valve body (101), and a cover (102) arranged at one end of the water inlet valve body (101); a first chamber (101c) and a second chamber (101d) are provided inside the water inlet valve body (101), and the first chamber (101c) and the second chamber (101d) are communicated; the water inlet pipe (101a) and the first chamber (101c) are communicated; and the water supply pipe (101b) and the second chamber (101d) are communicated; A third chamber (102a) is provided on the cover (102), and a movable frame (103) is movably installed in the third chamber (102a). A movable diaphragm (104) is fixedly installed on a side of the movable frame (103) close to the water inlet valve body (101). A constant pressure hole (103a) and a pressure relief hole (103b) are provided on the movable frame (103), and a dynamic sealing gasket (105) is provided at the pressure relief hole (103b). A drain valve assembly (200) comprises a drain valve body (201) arranged at one end of the water inlet valve body (101) away from the sealing cover (102), a fourth chamber (201a) provided in the drain valve body (201), a support plate (201b) provided in the fourth chamber (201a), a water-blocking chamber column (201c) welded to the support plate (201b), and a downpipe (201d) and a drain pipe (201e) provided on the side wall of the drain valve body (201), the downpipe (201d) and the water-blocking chamber column (201c) being in communication, a sealing piston (201f) being provided in the water-blocking chamber column (201c), and the drain pipe (201e) being in communication with the fourth chamber (201a).

2. The multifunctional washing machine combination valve according to claim 1, characterized in that: A spring chamber column (102b) is provided on the cover (102), and a return spring (102c) is provided in the spring chamber column (102b), and the return spring (102c) pushes the dynamic sealing gasket (105) to seal the pressure relief hole (103b).

3. The multifunctional washing machine combination valve according to claim 1 or 2, characterized in that: A partition plate (101e) is provided between the first chamber (101c) and the second chamber (101d), and a connecting pipe (101f) is provided at the axial center of the partition plate (101e), and the connecting pipe (101f) and the pressure relief hole (103b) are coaxial.

4. The multifunctional washing machine combination valve according to claim 3, characterized in that: A movable push rod (105a) is provided at one end of the dynamic sealing gasket (105) away from the return spring (102c), and the movable push rod (105a) passes through the pressure relief hole (103b) and is movably provided in the connecting pipe (101f); A limiting block (101g) is provided in an annular array at one end of the connecting pipe (101f) away from the pressure relief hole (103b), and a sealing column (106) is movably installed in the limiting block (101g) in the annular array; A cushion block (101h) is provided on one end of the inner wall of the limiting block (101g) of the annular array close to the connecting pipe (101f).

5. The multifunctional washing machine combination valve according to claim 4, characterized in that: The water-sealing cavity column (201c) is in communication with the fourth cavity (201a), and a through hole (201c-1) is provided at one end of the water-sealing cavity column (201c) facing the second cavity (101d), a push rod (107) is movably installed in the through hole (201c-1), and the push rod (107) passes through the through hole into the second cavity (101d) and is fixedly connected to one end of the sealing column (106).

6. The multifunctional washing machine combination valve according to claim 4 or 5, characterized in that: A microfiltration lining (108) is provided at the water inlet of the water inlet pipe (101a), and a magnetic blade (109) is rotatably installed between the microfiltration lining (108) and the connecting pipe (101f); A accommodating cavity is provided on the side wall of the water inlet valve body (101), and a Hall chip (110) corresponding to the magnetic blade (109) is fixedly installed in the accommodating cavity.

7. The multifunctional washing machine combination valve according to claim 6, characterized in that: It also includes a drive assembly (300), which includes a motor fixing seat (301) fixedly mounted on one side of the drain valve body (201), a guide sleeve (301a) being provided at one end of the motor fixing seat (301) close to the drain valve body (201), and a limit plate (301b) being provided in the inner cavity of the motor fixing seat (301).

8. The multifunctional washing machine combination valve according to claim 7, characterized in that: The driving assembly (300) further comprises a stepping motor (302) arranged on one side of the motor fixing seat (301), an eccentric shaft (303) arranged on the output shaft of the stepping motor (302), and a driving member (304) movably mounted on the guide sleeve (301a).

9. The multifunctional washing machine combination valve according to claim 8, characterized in that: The driving member (304) includes a piston guide rod (304a) movably installed in the guide sleeve (301a), a push rod (304b) arranged at one end of the piston guide rod (304a), and a waist-shaped ring (304c) arranged at the other end of the piston guide rod (304a).

10. The multifunctional washing machine combination valve according to claim 8 or 9, characterized in that: A guide surface (201c-2) is provided at the opening of the closed water cavity column (201c).

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