Multi-way control valve

Abstract

This invention provides a multi-way control valve, including a valve body and a valve core. The valve body has a valve core mounting hole in its center and multiple valve chambers within it. Each valve chamber has a through-hole on one inner wall that communicates with the valve core mounting hole. At least one valve chamber is a drain chamber, with a drain hole on the other chamber wall. At least one valve chamber is a filter chamber, with a filter hole on the other chamber wall. At least one valve chamber is a backwash chamber, with a backwash hole on the other chamber wall. The valve core is embedded in the valve core mounting hole, with its sidewall fitting snugly against the hole wall. The valve core has a valve core inlet in its center, a valve core outlet on one side wall, and a notched groove on the other side wall. The through-holes of at least two other valve chambers communicate through the notched groove. This multi-way control valve has a simple structure, is easy to assemble, has low manufacturing cost, and is small in size.

Description

Technical Field

[0001] This invention relates to a control valve, and more particularly to a multi-way control valve. Background Technology

[0002] In the prior art, control valves used in sand pumps or sand filters are usually handle-type structures. Their overall structure is relatively complex, requires many components, is difficult to assemble, has high manufacturing costs, and is also relatively large in size, which is not conducive to use in space-constrained situations. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a multi-way control valve with simple structure, easy assembly, low manufacturing cost and small size.

[0004] To achieve the above objectives, the present invention provides a multi-way control valve, comprising a valve body and a valve core. The valve body has a valve core mounting hole in its center. The valve body contains multiple valve chambers, all of which are distributed around the valve core mounting hole. Each valve chamber has a through-hole on one inner wall communicating with the valve core mounting hole. At least one valve chamber is a drain chamber, and the other chamber wall of the drain chamber has a drain hole. At least one valve chamber is a filter chamber, and the other chamber wall of the filter chamber has a filter hole. One valve chamber is a backwash chamber, and another chamber wall of the backwash chamber is provided with a backwash hole; the valve core is embedded in the valve core mounting hole, and the side wall of the valve core is in contact with the hole wall of the valve core mounting hole; the valve core is provided with a valve core water inlet hole in the middle part; a valve core water outlet hole communicating with the valve core water inlet hole is provided on one side wall of the valve core; the valve core water outlet hole is connected to the through valve core hole of one of the valve chambers; a notched groove is provided on the other side wall of the valve core; and the through valve core holes of at least two other valve chambers are connected through the notched groove.

[0005] Furthermore, there are two drainage chambers, which are located on both sides of the valve core. The filter chamber and the backwash chamber are also located on both sides of the valve core. One of the drainage chambers is a wastewater discharge chamber, and the drainage hole on the chamber wall of the wastewater discharge chamber is a wastewater discharge hole. The other drainage chamber is a circulating water discharge chamber, and the drainage hole on the chamber wall of the circulating water discharge chamber is a circulating water discharge hole.

[0006] Furthermore, at least one of the valve chambers is a sand washing chamber, and another chamber wall of the sand washing chamber is provided with a sand washing hole. The sand washing chamber is located between the filter chamber and the circulating water chamber.

[0007] Furthermore, at least one of the valve chambers is a closed chamber, and the walls of the other chambers of the closed chamber are all closed structures.

[0008] Furthermore, the filter chamber has a filter hole on its bottom chamber wall, the backwash chamber has a backwash hole on its bottom chamber wall, and the drain chamber has a drain hole on its outer chamber wall.

[0009] Furthermore, two sealing strips are installed on the side wall of the valve core, and the two sealing strips are respectively located on both sides of the water outlet hole of the valve core, and the sealing strips are in contact with the hole wall of the valve core mounting hole.

[0010] Furthermore, the valve core is equipped with an upper sealing ring at its top and a lower sealing ring at its bottom. Both the upper and lower sealing rings are in contact with the sidewall of the valve core mounting hole, and the upper and lower sealing rings are respectively fixed to both ends of the sealing strip. The two sealing strips, the upper sealing ring, and the lower sealing ring constitute an integral sealing element.

[0011] Furthermore, the end of the valve core is connected to the knob, and a spring is installed on the knob. The surface of the valve body is provided with multiple gear grooves that are spaced apart in sequence along the circumferential direction, and the spring is embedded in one of the gear grooves.

[0012] Furthermore, the valve body includes a valve body and a valve cover detachably connected to the valve body, with the valve body and the valve cover forming the entire valve chamber.

[0013] Furthermore, the filter holes are provided with multiple filter baffles spaced apart.

[0014] As described above, the multi-way control valve of the present invention has the following beneficial effects:

[0015] When in use, this multi-way control valve can connect the valve core inlet to a water supply device such as a water pump. The entire multi-way control valve is mounted on a filter cartridge, which contains filter sand, a filter, and filter cartridge piping. The backwash port is connected to the filter cartridge piping. When it is necessary to filter water supplied by the water pump, rotate the valve core until the valve core outlet corresponds to the filter chamber. At this time, the valve core outlet communicates with the through valve core hole. The notched groove corresponds to the backwash chamber and the drain chamber. The through valve core hole of the drain chamber and the through valve core hole of the backwash chamber are connected through the notched groove. The interlocking grooves allow water supplied by the pump to enter the valve core through the inlet hole, then flow into the filter chamber through the outlet hole, and finally into the filter cartridge through the filter holes. After passing through filter sand and other filter components, the water enters the filter cartridge pipeline. During this process, the filter sand and other filter components filter the water. The filtered water then flows through the filter pipeline and backwash hole into the backwash chamber, then through the notched groove into the drain chamber, and finally out through the drain hole to the designated area, thus achieving water filtration. When backwashing of the filter cartridge is required, the... The valve core rotates to the position where the valve core outlet hole corresponds to the backwash chamber. At this point, the valve core outlet hole communicates with the valve core hole of the backwash chamber. The notched groove corresponds to the filter chamber and the drain chamber. The drain chamber communicates with the filter chamber through the notched groove. In this way, the water supplied by the pump flows into the valve core through the valve core inlet hole, then into the backwash chamber through the valve core outlet hole, and then flows back into the filter cartridge through the backwash hole and filter cartridge pipeline. After flowing through the filter element and filter sand, it flows into the filter chamber through the filter hole, and then into the drain through the notched groove. The water flows through the filter chamber and finally out through the drain hole. During this process, impurities in the filter cartridge are discharged with the water flow through the filter chamber and drain chamber, achieving reverse cleaning of the filter cartridge and meeting the backwashing requirements. Additionally, when needed, the valve core can be rotated to the position where the valve core outlet hole corresponds to the drain chamber. At this time, the valve core outlet hole and the drain chamber's through-hole are connected. Water supplied by the pump flows through the valve core inlet and outlet holes and enters the drain chamber, then is directly discharged through the drain hole, achieving direct drainage and meeting the needs for direct wastewater discharge. This multi-way control valve meets the control requirements for wastewater discharge, filtration, and backwashing. Furthermore, this design, with the valve core embedded in the middle of the valve body and each valve chamber surrounding the valve core, makes the entire valve structure more compact and smaller in size. More importantly, it simplifies the overall valve structure and simplifies assembly, thereby greatly reducing manufacturing difficulty and cost, and improving the stability of the valve during use. Attached Figure Description

[0016] Figure 1 This is an exploded view of the multi-way control valve in an embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional schematic diagram of a multi-way control valve in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the multi-way control valve after removing the valve cover and knob in an embodiment of the present invention.

[0019] Figure 4 This is a first-view perspective perspective view of the valve core in an embodiment of the present invention.

[0020] Figure 5 This is a second-view perspective perspective view of the valve core in an embodiment of the present invention.

[0021] Figure 6 This is a third-view perspective view of the valve core in an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of the sealing element in an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of water flowing between the pool, water pump, filter cartridge and valve body when the water outlet of the valve core is adjusted to correspond to the filter chamber in an embodiment of the present invention. The arrows in the diagram indicate the direction of water flow.

[0024] Figure 9 This is a schematic diagram of water flowing between the pool, water pump, filter cartridge and valve body when the water outlet of the valve core is adjusted to correspond to the backwash chamber in an embodiment of the present invention. The arrows in the diagram indicate the direction of water flow.

[0025] Component designation explanation

[0026] 1. Valve body 341: Drain for circulating water

[0027] 11 Valve body 35 Backwash chamber

[0028] 12 Valve cover 351 Backwash hole

[0029] 2 Valve core 36 Closing chamber

[0030] 21 Valve core inlet hole 4 Seal

[0031] 22 Valve core water outlet hole 41 Sealing strip

[0032] 23 Notched groove 42 Upper sealing ring

[0033] 31 Wastewater discharge chamber; 43 Lower sealing ring

[0034] 311 Wastewater discharge port 5 knob

[0035] 32 Filter chamber 51 Spring column

[0036] 321 Filter hole 52 Hand-twisting part

[0037] 33 Sand washing chambers 6 Filter cartridges

[0038] 331 Sand washing hole 7 Water pump

[0039] 34 circulating water chambers, 8 swimming pools Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0041] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0042] like Figures 1 to 9As shown, this embodiment provides a multi-way control valve, including a valve body 1 and a valve core 2. The valve body 1 has a valve core mounting hole in its center. The valve body 1 contains multiple valve chambers, all distributed around the valve core mounting hole. Each valve chamber has a through-hole on one inner chamber wall that communicates with the valve core mounting hole. One valve chamber is a drain chamber, with a drain hole on the other chamber wall. One valve chamber is a filter chamber 32, with a filter hole 321 on the other chamber wall. Another valve chamber is a reverse... The backwash chamber 35 has a backwash hole 351 on the wall of another chamber. The valve core 2 is embedded in the valve core mounting hole, and the side wall of the valve core 2 is in contact with the wall of the valve core mounting hole. The valve core 2 has a valve core water inlet hole 21 in the middle. The valve core 2 has a valve core water outlet hole 22 on one side wall that communicates with the valve core water inlet hole 21. The valve core water outlet hole 22 communicates with the through valve core hole of one of the valve chambers. The valve core 2 has a notched groove 23 on the other side wall. The through valve core holes of at least two other valve chambers are connected through the notched groove 23.When in use, this multi-way control valve can connect the valve core inlet 21 to a water supply device such as a water pump. The entire multi-way control valve is mounted on a filter cartridge, which contains filter sand, a filter, and filter cartridge piping. The backwash port 351 is connected to the filter cartridge piping. When it is necessary to filter the water supplied by the water pump, the valve core 2 is rotated until the valve core outlet 22 corresponds to the filter chamber 32. At this time, the valve core outlet 22 is connected to the through valve core hole, and the notched groove 23 corresponds to the backwash chamber 35 and the drain chamber. The through valve core hole of the drain chamber and the through valve core hole of the backwash chamber 35 are connected through the notched groove. The grooves 23 are interconnected, allowing water supplied by the pump to enter valve core 2 through valve core inlet 21, then flow into filter chamber 32 through valve core outlet 22, and then into filter cartridge through filter hole 321. After passing through filter sand and other filter components, the water enters the filter cartridge pipeline. During this process, the filter sand and other filter components filter the water. The filtered water flows into backwash chamber 35 through filter pipeline and backwash hole 351, then into drainage chamber through notched groove 23, and finally flows out through drainage hole to the designated area, thus achieving water filtration. When backwashing of the filter cartridge is required, valve core 2 is rotated... Turn the valve core outlet 22 to the position corresponding to the backwash chamber 35. At this time, the valve core outlet 22 is connected to the valve core hole of the backwash chamber 35. The notched groove 23 corresponds to the filter chamber 32 and the drain chamber. The drain chamber is connected to the filter chamber 32 through the notched groove 23. In this way, the water supplied by the pump flows into the valve core 2 through the valve core inlet 21, then into the backwash chamber 35 through the valve core outlet 22, and then flows back into the filter cartridge through the backwash hole 351 and the filter cartridge pipeline. After flowing through the filter element and filter sand in sequence, it flows into the filter chamber 32 through the filter hole 321, and then through... The water flows into the drainage chamber through the notched groove 23 and finally out through the drainage hole. During this process, impurities in the filter cartridge are discharged with the water flow through the filtration chamber 32 and the drainage chamber, achieving reverse cleaning of the filter cartridge and meeting the backwashing requirements. Additionally, when needed, the valve core 2 can be rotated to the position where the valve core outlet 22 corresponds to the drainage chamber. At this time, the valve core outlet 22 communicates with the through-hole of the drainage chamber. Water supplied by the pump flows through the valve core inlet 21 and outlet 22 into the drainage chamber and is directly discharged through the drainage hole, achieving direct drainage and meeting the requirements for direct wastewater discharge. This multi-way control valve meets the control requirements for wastewater discharge, filtration, and backwashing. Furthermore, the design, with the valve core 2 embedded in the middle of the valve body 1 and each valve chamber surrounding the valve core 2, makes the entire valve structure more compact and smaller in size. More importantly, it simplifies the overall valve structure and simplifies assembly, thereby greatly reducing manufacturing difficulty and cost, and improving the stability of the valve during use.

[0043] like Figure 3As shown, this embodiment has two drainage chambers, located on opposite sides of the valve core 2. The filter chamber 32 and backwash chamber 35 are also located on opposite sides of the valve core 2. One drainage chamber is the wastewater discharge chamber 31, with a wastewater discharge hole 311 on its chamber wall. The other drainage chamber is the circulating water discharge chamber 34, with a circulating water discharge hole 341 on its chamber wall. When the valve core 2 is rotated to the position corresponding to the filter chamber 32, the water filtered by the filter cartridge is discharged through the circulating water discharge chamber 34 and the circulating water discharge hole 341. When the valve core 2 is rotated to the position corresponding to the backwash chamber 35, the backwash water is discharged through the wastewater discharge chamber 31 and the wastewater discharge hole 311. In this embodiment, the circulating water discharge hole 341 and the wastewater discharge hole 311 are arranged coaxially and drain in opposite directions. In other embodiments, only one drainage chamber may be provided. In this embodiment, when the valve core water outlet 22 is adjusted to correspond with the filter chamber 32 and when the valve core water outlet 22 is adjusted to correspond with the backwash chamber 35, the water is finally discharged through this one drainage chamber and its drainage hole.

[0044] like Figure 3 In this embodiment, the valve body 1 contains one valve chamber, a sand washing chamber 33, with a sand washing hole 331 on the wall of another chamber of the sand washing chamber 33. The sand washing chamber 33 is located between the filter chamber 32 and the circulating water chamber 34. There is also a valve chamber 36 that is a closed chamber, with the other chamber walls of the closed chamber 36 being closed structures. The closed chamber 36 is located between the wastewater chamber 31 and the backwash chamber 35. Therefore, the valve body 1 in this embodiment has a total of 6 valve chambers, all of the same size. Specifically, these 6 valve chambers are formed by providing multiple partitions evenly spaced along the circumferential direction in the valve body 1. When the valve core outlet 22 is rotated to correspond to one of the valve chambers, the notched groove 23 corresponds to the other 3 valve chambers, which are connected through the notched groove 23. When valve core 2 is rotated to align with the water outlet 22 of the valve core and the sand washing chamber 33, the backwash chamber 35, the closed chamber 36, and the wastewater discharge chamber 31 are connected through the notched groove 23. Water supplied by the pump flows into the sand washing chamber 33 through valve core 2, then into the filter cartridge through the sand washing hole 331, then into the backwash chamber 35 through the filter sand, filter element, filter cartridge pipeline, and backwash hole 351, and then into the wastewater discharge chamber 31 through the notched groove 23. Finally, it flows out through the wastewater discharge hole 311, thus achieving sand washing. When valve core water outlet 22 is rotated to align with the closed chamber 36, since the walls of the other chambers in the closed chamber 36 are all closed, water cannot continue to flow after flowing into the closed chamber 36 through valve core 2, achieving the effect of shutting off the water flow.

[0045] Specifically, in this embodiment, the bottom chamber wall of the filter chamber 32 is provided with the filter holes 321, the bottom chamber wall of the backwash chamber 35 is provided with the backwash holes 351, and the outer chamber wall of the drainage chamber is provided with the drainage holes, that is, the outer wall of the wastewater discharge chamber 31 is provided with a wastewater discharge hole 311, and the outer wall of the circulating water discharge chamber 34 is provided with a circulating water discharge hole 341. The sand washing hole 331 is also located at the bottom of the sand washing chamber 33. In this embodiment, the filter holes 321 are provided with multiple spaced filter baffles, and the sand washing holes 331 are also provided with multiple spaced filter baffles, so that both the filter holes 321 and the sand washing holes 331 have a certain filtration effect.

[0046] In addition, such as Figures 5 to 7 As shown, two sealing strips 41 are installed on the side wall of the valve core 2. The two sealing strips 41 are located on both sides of the valve core outlet hole 22, and the sealing strips 41 are in contact with the hole wall of the valve core mounting hole. An upper sealing ring 42 is installed on the top of the valve core 2, and a lower sealing ring 43 is installed on the bottom of the valve core 2. Both the upper sealing ring 42 and the lower sealing ring 43 are in contact with the side wall of the valve core mounting hole, and the upper sealing ring 42 and the lower sealing ring 43 are fixed to the two ends of the sealing strips 41 respectively. The two sealing strips 41, the upper sealing ring 42 and the lower sealing ring 43 constitute an integrated sealing element 4. This sealing element 4 enhances the sealing effect of the valve core 2 outlet hole, ensuring that the water flowing out of the valve core outlet hole 22 flows directly into the corresponding valve chamber through the valve core hole, without leaking to other places. This ensures that the multi-way control valve can more accurately control the water flow along the set path, making the control precision of the multi-way control valve higher.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the valve body 1 includes a valve body 11 and a valve cover 12 detachably connected to the valve body 11, forming the entire valve chamber between the valve body 11 and the valve cover 12. Thus, when needed, the valve cover 12 can be removed from the valve body 11, thereby opening the valve chambers to allow for cleaning operations such as wiping each chamber, facilitating cleaning of the interior of the valve body 1. Specifically, the valve cover 12 is fixed to the valve body 11 by multiple screws.

[0048] Meanwhile, in this embodiment, the end of the valve core 2 is connected to the knob 5, and a spring pin 51 is installed at the bottom of the knob 5. The surface of the valve body 1 is provided with multiple circumferentially spaced grooves. Specifically, the upper surface of the valve cover 12 is provided with 6 circumferentially spaced grooves, each corresponding to one of the 6 valve chambers. The spring pin 51 is embedded in one of the grooves. After rotating the valve core 2 to the set position, the spring pin 51 will be embedded in the corresponding groove, at which point the valve core outlet 22 accurately corresponds to the corresponding valve chamber. The spring pin 51 and the groove work together to provide a positioning function, and during the rotation of the knob 5, it provides a certain indication to the operator that the knob has been rotated to the correct position. The knob 5 includes a mounting part and a hand-operated part 52. The mounting part is disc-shaped, and the valve cover 12 has corresponding grooves that cooperate with the mounting part. The hand-operated part 52 is an upwardly protruding cylinder with multiple anti-slip strips on its outer wall.

[0049] In this embodiment, the valve core mounting hole is located at the center of the valve body 1, and the valve core 2 and the valve core are conical in shape. The valve core 2 passes through the valve body 1 and is fixedly connected to the knob 5. A closed water passage is formed between the valve core 2 and the valve body 1, and the sealing element 4 on the valve core 2 enhances the sealing performance of the water passage. The knob 5 and the valve core 2 are rotatably connected relative to the valve body 1 and the valve cover 12. By rotating the knob 5, six functions are achieved: filtration, backwashing, forward washing, circulation, drainage, and shut-off.

[0050] like Figure 8 and Figure 9 As shown, in this embodiment, the multi-way control valve works in conjunction with the filter cartridge 6 and the water pump 7 to form a sand pump. This sand pump can be used for filtration and other treatments of the water in the swimming pool 8. The water pump 7 can be connected to the drain outlet of the swimming pool 8, and the circulation hole 341 can be connected to the inlet of the swimming pool 8, thus enabling the circulation and filtration of the water in the swimming pool 8; it can also achieve the direct discharge of wastewater from the swimming pool 8. The specific process is as follows:

[0051] When the valve core outlet hole 22 is aligned with the wastewater discharge chamber 31, the water pumped from the pool 8 enters the wastewater discharge chamber 31 through the water pump 7 and is discharged from the wastewater discharge hole 311.

[0052] like Figure 8 As shown, when the valve core outlet 22 is aligned with the filter chamber 32, the water pumped from the pool 8 enters the filter chamber 32 through the water pump 7 and valve core 2, then flows through the filter sand, filter elements and filter pipes in the filter cartridge 6, enters the backwash chamber 35, then flows into the drain circulation chamber 34 through the notched groove 23, and finally flows back to the pool 8 through the drain circulation hole 341, thus realizing the circulation filtration of the pool water.

[0053] When the valve core outlet 22 is aligned with the sand washing chamber 33, the water pumped from the pool 8 enters the sand washing chamber 33 through the water pump 7 and the valve core 2, and then flows into the filter cartridge 6 through the sand washing hole 331. From the filter cartridge 6, it passes through the filter sand, the filter and the filter cartridge pipeline in sequence and enters the backwash chamber 35. It enters the wastewater discharge chamber 31 through the notched groove 23 and is discharged from the wastewater discharge hole 311.

[0054] When the valve core outlet 22 is aligned with the drain circulation chamber 34, the water pumped up from the bottom of the pool 8 enters the drain circulation chamber 34 through the water pump 7 and valve core 2, and flows into the pool 8 from the drain circulation hole 341, forming a water circulation flow in the pool 8.

[0055] like Figure 9 As shown, when the valve core outlet 22 is aligned with the backwash chamber 35, the water pumped from the bottom of the pool 8 enters the backwash chamber 35 through the water pump 7 and valve core 2, flows into the filter cartridge pipeline and filter through the backwash hole 351, enters the filter cartridge 6, and washes the impurities in the filter sand into the filter chamber 32 through the water flow, flows through the notched groove 23 into the wastewater discharge chamber 31, and is finally discharged from the wastewater discharge hole 311.

[0056] When the valve core outlet 22 is aligned with the closed chamber 36, the water drawn from the pool 8 enters the closed chamber 36 through the valve core 2, and cannot form a flow channel, i.e., it is not working.

[0057] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A multi-way control valve, characterized in that, The valve includes a valve body and a valve core. The valve body has a valve core mounting hole in its center. The valve body contains multiple valve chambers, all of which are distributed around the valve core mounting hole. Each valve chamber has a through-hole on one inner wall that communicates with the valve core mounting hole. At least one valve chamber is a drain chamber, with a drain hole on the other wall of the drain chamber. At least one valve chamber is a filter chamber, with a filter hole on the other wall of the filter chamber. At least one valve chamber is a backwash chamber. The backwash chamber has a backwash hole on the wall of the other chamber. The valve core is embedded in the valve core mounting hole, and the side wall of the valve core fits against the wall of the valve core mounting hole. The valve core has a valve core inlet hole in the middle and a valve core outlet hole communicating with the valve core inlet hole on one side wall of the valve core. The valve core outlet hole communicates with the through valve core hole of one of the valve chambers. The valve core has a notched groove on the other side wall of the valve core, and the through valve core holes of at least two other valve chambers are connected through the notched groove.

2. The multi-way control valve according to claim 1, characterized in that, There are two drainage chambers, which are located on both sides of the valve core. The filter chamber and the backwash chamber are also located on both sides of the valve core. One of the drainage chambers is a wastewater discharge chamber, and the drainage hole on the chamber wall of the wastewater discharge chamber is a wastewater discharge hole. The other drainage chamber is a circulating water discharge chamber, and the drainage hole on the chamber wall of the circulating water discharge chamber is a circulating water discharge hole.

3. The multi-way control valve according to claim 2, characterized in that, At least one of the valve chambers is a sand washing chamber, and another chamber wall of the sand washing chamber is provided with a sand washing hole. The sand washing chamber is located between the filter chamber and the circulating water chamber.

4. The multi-way control valve according to claim 1, characterized in that, At least one of the valve chambers is a closed chamber, and the walls of the other chambers of the closed chamber are all closed structures.

5. The multi-way control valve according to claim 1, characterized in that, The filter chamber has a filter hole on its bottom chamber wall, the backwash chamber has a backwash hole on its bottom chamber wall, and the drain chamber has a drain hole on its outer chamber wall.

6. The multi-way control valve according to claim 1, characterized in that, Two sealing strips are installed on the side wall of the valve core. The two sealing strips are located on both sides of the water outlet hole of the valve core, and the sealing strips are in contact with the hole wall of the valve core mounting hole.

7. The multi-way control valve according to claim 6, characterized in that, The valve core is equipped with an upper sealing ring at its top and a lower sealing ring at its bottom. Both the upper and lower sealing rings are in contact with the side wall of the valve core mounting hole, and the upper and lower sealing rings are respectively fixed to both ends of the sealing strip. The two sealing strips, the upper sealing ring, and the lower sealing ring constitute an integral sealing component.

8. The multi-way control valve according to claim 1, characterized in that, The end of the valve core is connected to the knob, and a spring is installed on the knob. The surface of the valve body is provided with multiple gear grooves that are spaced apart in a circumferential direction, and the spring is embedded in one of the gear grooves.

9. The multi-way control valve according to claim 1, characterized in that, The valve body includes a valve body and a valve cover detachably connected to the valve body, with the valve body and the valve cover forming the entire valve chamber.

10. The multi-way control valve according to claim 1, characterized in that, The filter holes are provided with multiple filter baffles spaced apart.

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