A water outlet valve body structure of a water purifier switchable between installation and non-installation

Abstract

The present application relates to water purification equipment technical field, disclose a kind of installation and installation-free switchable water purifier drain valve body structure, including base, raw water tank, filter assembly, concentrated water drain valve body, raw water drain valve body, reversing valve body and rotatable switching valve core.Switching valve core has mutually isolated first V-shaped channel and second V-shaped channel;In first working position, raw water tank supplies raw water to filter assembly and concentrated water backflow raw water tank;In second working position, tap water supplies water to filter assembly and concentrated water is discharged through blowdown port.Drain valve body uses spring reset valve core, valve stem and sealing ring, raw water tank is lifted automatically closed waterway.The structure is switched by once mechanical rotation Synchronous water supply and blowdown path, so that the same water purifier has installation and installation-free mode, and can reduce residual water, pipeline quantity and assembly space.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and in particular to a countertop water purifier that can switch between an installation-free mode with water tank supply and an installation mode with direct tap water supply. Background Technology

[0002] Countertop water purifiers typically use a raw water tank for supply, allowing users to use them without modifying their household plumbing. However, this requires frequent replenishment and drainage of the raw water tank. Installed water purifiers connect directly to the tap water supply and drain concentrated wastewater into the drain pipe, but the water system and installation method are fixed. Existing products are generally designed for either installation-free or installation-only scenarios, making it difficult for users to switch between them based on their environment after purchase. Furthermore, the drain valve between the raw water tank and the base tends to retain a significant amount of liquid after the tank is lifted, potentially overflowing and forming scale on the base. Adding solenoid valves and multiple piping systems to achieve both modes would complicate the internal structure, make assembly difficult, and increase potential points of failure. Therefore, a compact, easy-to-operate drain valve structure for water purifiers that reliably switches between two water supply and drainage modes is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a water purifier drain valve body structure that can switch between installation and installation-free modes, in order to solve the problems of existing countertop water purifiers where the installation mode and installation-free mode cannot be easily compatible on the same body, there is a lot of residual water in the drain valve body after the raw water tank is lifted, and the dual-mode water circuit structure is complicated.

[0004] The technical solution adopted to solve the above problems is:

[0005] A water purifier drain valve body structure that can be switched between installation and installation-free operation is provided, including a base, a raw water tank detachably mounted on the base, a filter assembly, a concentrated water drain valve body, a raw water drain valve body, and a piping assembly for connecting the internal water circuit of the water purifier; it also includes a reversing valve body and a switching valve core rotatably mounted within the reversing valve body. The concentrated water drain valve body and the raw water drain valve body respectively cooperate with the corresponding water inlets of the raw water tank, and the reversing valve body is connected to the concentrated water drain valve body, the raw water drain valve body, the tap water inlet, the water inlet circuit of the filter assembly, the concentrated water circuit of the filter assembly, and the wastewater outlet. The switching valve core has a first V-shaped channel and a second V-shaped channel that are isolated from each other. When the switching valve core rotates to the first working position, the first V-shaped channel connects the raw water tank to the inlet water path of the filter assembly via the raw water drain valve body, and the second V-shaped channel connects the concentrate water path of the filter assembly to the raw water tank via the concentrate drain valve body, thus forming a water path that does not require installation. When the switching valve core rotates to the second working position, the first V-shaped channel connects the tap water inlet to the inlet water path of the filter assembly, and the second V-shaped channel connects the concentrate water path of the filter assembly to the drain outlet, thus forming a water path that requires installation. In this way, the raw water supply path and the concentrate discharge path are switched synchronously through a mechanical switching valve core.

[0006] Furthermore, the reversing valve body is equipped with a raw water tank inlet, a raw water tank concentrate inlet, a tap water inlet, a drain inlet, a concentrate outlet inlet, a filtered water inlet, and the raw water tank inlet is connected to the raw water drain valve body on the raw water tank side. The tap water inlet is connected to tap water, the booster pump inlet is connected to the inlet water path of the filter assembly, the drain inlet is connected to the drain outlet, and the raw water tank concentrate inlet is connected to the concentrate water path of the filter assembly. The reversing valve body also has a return connection part connected to the raw water drain valve body and the concentrate drain valve body. All inlets are arranged around the switching valve core, allowing the two V-shaped channels to bridge the corresponding inlets at different angular positions. Furthermore, the switching valve core can rotate a preset angle between the first working position and the second working position, preferably 60 degrees. The operating end of the switching valve core is positioned facing the raw water tank installation area. After the raw water tank is removed, the user can use a coin, screwdriver, or matching tool to insert into the slot of the operating end and rotate the switching valve core, thereby selecting the working mode without disassembling the casing or rearranging the internal piping.

[0007] Furthermore, the switching valve core is equipped with a locking tongue, and the reversing valve body is equipped with a reversing locking port that cooperates with the locking tongue. When the switching valve core rotates to the first working position or the second working position, the locking tongue enters the reversing locking port or cooperates with the corresponding limiting part of the reversing locking port to perform circumferential positioning of the switching valve core and provide position feedback, reducing the possibility that the switching valve core may deviate from the set position due to pipeline pressure, vibration or accidental contact.

[0008] Furthermore, the reversing valve body is located between the concentrate drain valve body and the raw water drain valve body, and is connected to the two drain valve bodies via quick-connect fittings on both sides. Limiting ribs, limiting grooves, or mutually abutting positioning surfaces are provided between the reversing valve body, the concentrate drain valve body, and the raw water drain valve body to restrict relative torsion among the three, allowing the valve body assembly to be installed as a whole into the base, and reducing the number of hoses and assembly space required.

[0009] Furthermore, at least one of the concentrated water drain valve body and the raw water drain valve body includes a valve body, a valve stem vertically disposed within the valve body, a valve core capable of axial movement relative to the valve stem, a return spring for pushing the valve core to reset, and a sealing ring disposed on the valve core or valve body. The valve stem has an inlet and an outlet. When the raw water tank is placed on the base, the one-way valve at the bottom of the raw water tank pushes the valve core to move against the elastic force of the return spring, causing the sealing ring to leave the closed position, and the inlet and outlet are connected through the internal space of the valve body. When the raw water tank is lifted, the valve core resets upward under the action of the return spring, and the sealing ring engages with the sealing surface of the valve stem or valve body to close the water passage. The inlet of the valve stem is located at a lower position, and the outlet is close to the opening and closing engagement area of ​​the valve core, so that the flow channel can be cut off as quickly as possible during the valve core reset process and the residual water in the upper cavity can be reduced.

[0010] Furthermore, the bottom of the raw water tank is equipped with a raw water inlet and a one-way valve, with the one-way valve positioned opposite the valve core of the raw water drain valve body. When the raw water drain valve body is separated from the purified water tank, the one-way valve on the purified water tank side closes the raw water tank inlet, and the return spring on the raw water drain valve body side simultaneously drives the valve core to close the water passage of the machine base, forming a bidirectional water stop from both the raw water tank side and the machine base side. The concentrated water drain valve body can adopt the same or similar opening and closing structure as the raw water drain valve body to close the concentrated water return path when the purified water tank is lifted.

[0011] Furthermore, the filter assembly is mounted on a filter assembly bracket and filter element holder, with a filter element mounting slot provided within the base. A low-pressure switch and a booster pump can be sequentially installed on the water inlet side of the filter assembly, while a concentrate valve is installed on the concentrate side. The tap water inlet is connected to the low-pressure switch via a tap water inlet pipe, then to the inlet solenoid valve via a filter water pipe, and finally to the switching drain valve body via a filter water pipe. The booster pump inlet of the switching drain valve body is connected to the water inlet of the filter assembly, and the concentrate valve is connected to the reversing valve body via a concentrate pipe. The low-pressure switch is used to detect the inlet water pressure or water shortage status in the installation mode, the inlet solenoid valve is used to open and close the tap water inlet, and the concentrate valve is used to control the discharge of concentrate generated by the filter assembly.

[0012] The beneficial effects of the technical solution of this invention are:

[0013] 1. The water purifier's drain valve body structure, which can switch between installation and no-installation modes, utilizes two isolated V-shaped channels. A single rotation can simultaneously change the direction of raw water supply and concentrated water discharge, allowing the same countertop water purifier to function in both a tank-supply no-installation mode and a direct tap water supply installation mode. Users can choose according to their usage environment.

[0014] 2. The reversing valve body and the raw water and concentrated water drain valve body adopt a compact quick-connect combination and anti-torsion limit structure, which reduces the number of electrical control valves, hose joints and assembly space, making the water circuit clear and easy to assemble and maintain.

[0015] 3. When the raw water tank is lifted, the return spring pushes the valve core to return to its original position. The sealing ring cooperates with the valve stem or valve body, and the one-way valve on the clean water tank side and the valve core on the machine base side achieve double water stop, which can reduce residual water, dripping and scale on the surface of the drain valve body and the machine base.

[0016] 4. The locking tongue and reversing locking jaw can position two working positions, reducing the risk of water leakage, cross-contamination, or flow loss caused by incorrect switching or incomplete channel alignment. Attached Figure Description

[0017] Figure 1 This is a top side view of the water purifier's drain valve body structure in this embodiment;

[0018] Figure 2 for Figure 1 Remove the original side view of the water tank;

[0019] Figure 3 This is a top side view of the cross-sectional structure of the water purifier's drain valve body in this embodiment;

[0020] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0021] Figure 5 This is a top side view showing the connection between the drain valve body structure and the water passage of the water purifier in this embodiment;

[0022] Figure 6 This is a partially enlarged view of the interaction between the switching valve core and the drain valve body described in this embodiment;

[0023] Figure 7 This is a cross-sectional view of the water switching path between the switching valve core and the drain valve body described in this embodiment;

[0024] Figure 8 This is a schematic diagram of the water flow direction when the drain valve body of the water purifier in this embodiment is in an installation-free state;

[0025] Figure 9 This is a schematic diagram of the water flow direction when the water purifier's drain valve body is in the installed state.

[0026] The components are: 1-raw water tank, 101-raw water inlet, 102-check valve, 2-base, 3-filter assembly bracket, 4-concentrate drain valve body, 401-valve stem, 4011-valve stem outlet, 4012-valve stem inlet, 402-drain valve body cover, 403-reset spring, 404-sealing ring, 405-drain valve core, 406-raw water valve body seal, 5-raw water drain valve body, 6-switching valve core, 601-first V-shaped channel, 602-second V-shaped channel, 603-locking tongue. 7-Filter cartridge installation slot, 8-Booster pump, 9-Filter cartridge seat, 10-Reversing valve body, 1001-Shengu tank concentrate interface, 1002-Tap water interface, 1003-Filtered water interface, 1004-Shengu tank raw water interface, 1005-Sewage outlet interface, 1006-Concentrate inlet interface, 1007-Reversing lock, 11-Tap water inlet, 12-Low pressure switch, 13-Tap water inlet pipe, 14-Filtered water pipe, 15-Concentrate valve, 16-Concentrate pipe, 17-Sewage outlet, 18-Inlet solenoid valve. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. For ease of description, only the parts related to the present invention are shown in the drawings, not the entire structure.

[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0031] like Figures 1 to 3 As shown, the water purifier drain valve body structure of this embodiment includes a raw water tank 1, a base 2, a filter assembly bracket 3, a concentrated water drain valve body 4, a raw water drain valve body 5, a filter element mounting groove 7, and a filter element seat 9. The raw water tank 1 is detachably installed at the rear or side of the base 2. The filter assembly bracket 3 is fixed inside the base 2. The filter element mounting groove 7 is formed on the filter assembly bracket 3. The filter element seat 9 is used to support and connect the filter assembly. The concentrated water drain valve body 4 and the raw water drain valve body 5 are arranged side by side below the raw water tank 1, and are respectively opposite to the concentrated water return port and the raw water supply port at the bottom of the raw water tank 1. The raw water supply port of the raw water tank 1 includes a raw water inlet 101 and a one-way valve 102. When the raw water tank 1 is installed, the one-way valve 102 is opened by the corresponding valve core. When the raw water tank 1 is lifted, the one-way valve 102 automatically closes.

[0032] like Figure 3 and Figure 4As shown, taking the drain opening and closing structure used in the concentrated water drain valve body 4 and the raw water drain valve body 5 as an example, the structure includes a valve stem 401, a drain valve body cover 402, a return spring 403, a sealing ring 404, a raw water valve core 405, and a raw water valve body sealing element 406. The valve stem 401 is arranged vertically, and its interior or outer periphery forms a channel for water supply flow. The valve stem 401 is provided with a water outlet 4011 and a water inlet 4012. The raw water valve core 405 is sleeved or slidably disposed on the outside of the valve stem 401. The return spring 403 abuts between the raw water valve body 402 and the raw water valve core 405. The sealing ring 404 is disposed in the lower sealing area of ​​the raw water valve core 405. The raw water valve body sealing element 406 is disposed on the upper part of the raw water valve body 402 and is used to seal the insertion area between the raw water tank 1 and the valve body.

[0033] When the raw water tank 1 is installed downwards, the one-way valve 102 and the raw water valve core 405 press against each other. The raw water valve core 405 moves downwards and compresses the return spring 403, causing the sealing ring 404 to leave its closed engagement position with the valve stem 401 or the raw water valve body 402. The inlet hole 4012, the internal channel of the valve stem 401, and the outlet hole 4011 are interconnected, allowing water to enter the corresponding drain circuit. When the purified water tank 1 is lifted upwards, the one-way valve 102 first or simultaneously closes the water inlet of the raw water tank 1. The return spring 403 pushes the raw water valve core 405 upwards. The sealing ring 404 moves with the raw water valve core 405 and is limited by the limiting part or sealing surface of the valve stem 401, ultimately sealing the flow path between the outlet hole 4011 and the inlet hole 4012. Because the closed position is close to the separation interface between the purified water tank 1 and the valve body, the volume of the exposed cavity after separation is small, thereby reducing the residual water on the base 2. The concentrated water drain valve body 4 can adopt the same spring reset and sealing structure. Its internal parts can be understood as concentrated water valve body and concentrated water valve core respectively, depending on the water circuit it is located in.

[0034] like Figures 5 to 7 As shown, the reversing valve body 10 is positioned between the concentrated water drain valve body 4 and the raw water drain valve body 5, and the switching valve core 6 is rotatably inserted into the reversing valve body 10. The reversing valve body 10 has quick-connect rods or quick-connect holes on both sides, which are respectively inserted into the concentrated water drain valve body 4 and the raw water drain valve body 5. Mutually cooperating limiting ribs and limiting grooves can also be provided between the three valve bodies to prevent the reversing valve body 10 from twisting relative to the two drain valve bodies. This assembly method allows the valve body assembly to be pre-assembled and then installed as a whole into the base 2, avoiding misalignment of the interface direction during installation.

[0035] The switching valve core 6 is provided with a first V-shaped channel 601, a second V-shaped channel 602, and a locking tongue 603. The first V-shaped channel 601 and the second V-shaped channel 602 are isolated from each other within the switching valve core 6. Each V-shaped channel has a common channel section and two branch channel sections that can be selectively connected. The reversing valve body 10 is provided around the switching valve core 6 with a raw water tank concentrate inlet 1001, a tap water inlet 1002, a filtered water inlet 1003, a raw water tank raw water inlet 1004, a drain inlet 1005, and a concentrate inlet 1006, and is provided with a reversing locking port 1007. When the switching valve core 6 rotates, the openings of the first V-shaped channel 601 and the second V-shaped channel 602 simultaneously change their alignment, thereby switching the water supply branch and the concentrate branch simultaneously in a mechanical linkage manner.

[0036] The locking tongue 603 is located on the outer periphery of the switching valve core 6, and the reversing locking port 1007 is located at the corresponding position of the reversing valve body 10. In this embodiment, the switching valve core 6 rotates 60 degrees from the installation-free position to the installation position, and the locking tongue 603 engages with the positioning edge or positioning recess of the reversing locking port 1007 in two positions respectively. The top of the switching valve core 6 is provided with a tool slot, which is exposed after the water tank 1 is removed. The user can rotate the switching valve core 6 by inserting a tool into the tool slot. The base 2 is equipped with a booster pump 8, a water purification pipe 801, a low-pressure switch 12, a tap water inlet pipe 13, a filtered water pipe 14, a concentrate valve 15, and a concentrate pipe 16. Water inlet 11 is connected to water inlet 1002 via water inlet pipe 13; filtered water inlet 1003 is connected to the inlet of low-pressure switch 12, booster pump 8, or filter assembly via filtered water pipe 14, and the filtered water can be transported to the outlet assembly via filtered water pipe 801; the concentrated water produced by the filter assembly is sent to concentrated water inlet 1006 via concentrated water valve 15 and concentrated water pipe 16; drain port 1005 is connected to drain port 17. Raw water inlet 1001, raw water outlet 1004, and the corresponding return connection parts on the reversing valve body 10 are connected to raw water drain valve body 5 and concentrated water drain valve body 4 via quick-connect structure. Figure 8 As shown, when the machine is in the installation-free state, the raw water tank 1 is installed on the base 2, and the switching valve core 6 is in the first working position. The raw water in the raw water tank 1 enters the reversing valve body 10 through the raw water inlet 101, the one-way valve 102, and the raw water drain valve body 5. The first V-shaped channel 601 connects this raw water path to the filtered water interface 1003. The raw water then enters the filter assembly through the filtered water pipe 14, the low-pressure switch 12, the booster pump 8, and the inlet solenoid valve 18. The concentrated water produced by the filter assembly enters the reversing valve body 10 through the concentrated water valve 15 and the concentrated water pipe 16. The second V-shaped channel 602 connects the concentrated water path to the concentrated water drain valve body 4, allowing the concentrated water to return to the raw water tank 1. In this state, the branches corresponding to the tap water inlet 11 and the drain outlet 17 are isolated by the switching valve core 6, and the user does not need to connect the household water inlet and drain pipes.

[0037] like Figure 9As shown, when the machine is in the installation state, the user removes the water tank 1 or at least exposes the operating end of the switching valve core 6, rotates the switching valve core 6 to the second working position, and positions the locking tongue 603. Tap water enters through the tap water inlet 11, passes through the tap water inlet pipe 13 to the tap water interface 1002, and the first V-shaped channel 601 connects the tap water interface 1002 to the filtered water interface 1003. The tap water enters the filter assembly through the filtered water pipe 14. The concentrated water produced by the filter assembly passes through the concentrated water valve 15 and the concentrated water pipe 16 to the concentrated water inlet interface 1006. The second V-shaped channel 602 connects the concentrated water inlet interface 1006 to the drain interface 1005, and the concentrated water is discharged from the drain port 17. In this state, the raw water drain valve body 5 and concentrated water drain valve body 4, which are connected to the raw water tank 1, are isolated by the switching valve core 6. The two drain valve bodies are kept closed by the return spring 403 and the sealing ring 404 to prevent water leakage to the installation area of ​​the clean water tank 1 in the installation mode.

[0038] Before switching operating modes, water production can be stopped and pipeline pressure released before rotating the switching valve core 6 to reduce the possibility of momentary leakage caused by switching under pressure. After switching, the locking tongue 603 engages with the reversing locking port 1007, and both V-shaped channels are fully aligned with their corresponding interfaces, allowing the machine to operate according to the selected mode. The specific division of labor between the first V-shaped channel 601 and the second V-shaped channel 602, as well as the circumferential arrangement of the six interfaces, can be adjusted as needed. As long as the two working positions can respectively establish a raw water supply and concentrated water return path for the water tank, and a tap water supply and concentrated water discharge path, it falls within the scope of this invention.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A water purifier drain valve body structure that can be switched between installation and no installation, comprising a base (2), a raw water tank (1) detachably disposed on the base (2), a filter assembly, a concentrated water drain valve body (4), and a raw water drain valve body (5), characterized in that: It also includes a reversing valve body (10) and a switching valve core (6) rotatably disposed within the reversing valve body (10). The switching valve core (6) has a first V-shaped channel (601) and a second V-shaped channel (602) that are isolated from each other. When the switching valve core (6) is in the first working position, the first V-shaped channel (601) connects the raw water tank (1) to the inlet water path of the filter assembly via the raw water drain valve body (5), and the second V-shaped channel (602) connects the filter assembly to the concentrated water return path of the raw water tank (1) via the concentrated water drain valve body (4). When the switching valve core (6) is in the second working position, the first V-shaped channel (601) connects the tap water inlet (11) to the inlet water path of the filter assembly, and the second V-shaped channel (602) connects the filter assembly to the concentrated water discharge path of the drain outlet (17).

2. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1, characterized in that: The reversing valve body (10) is provided with a raw water tank concentrate inlet (1001), a tap water inlet (1002), a filtered water inlet (1003), a raw water tank raw water inlet (1004), a sewage outlet (1005), and a concentrate inlet inlet (1006). The tap water inlet (1002) is connected to the tap water outlet (11), the filtered water inlet (1003) is connected to the water inlet of the filter assembly, the sewage outlet (1005) is connected to the sewage outlet (17), and the concentrate inlet inlet (1006) is connected to the concentrate water path of the filter assembly.

3. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1, characterized in that: The rotation angle of the switching valve core (6) between the first working position and the second working position is sixty degrees, and the operating end of the switching valve core (6) is set towards the installation area of ​​the raw water tank (1).

4. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1 or 3, characterized in that: The outer periphery of the switching valve core (6) is provided with a locking tongue (603), and the reversing valve body (10) is provided with a reversing lock mouth (1007). The locking tongue (603) and the reversing lock mouth (1007) cooperate to position the switching valve core (6) in the first working position or the second working position.

5. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1, characterized in that: The reversing valve body (10) is disposed between the concentrated water drain valve body (4) and the raw water drain valve body (5). The two sides of the reversing valve body (10) are connected to the concentrated water drain valve body (4) and the raw water drain valve body (5) respectively through quick-connect fittings, and a limiting structure for limiting relative rotation is provided between the three.

6. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1, characterized in that: At least one of the concentrated water drain valve body (4) and the raw water drain valve body (5) includes a drain valve body cover (402), a valve stem (401), a raw water valve core (405), a return spring (403), and a sealing ring (404). The raw water valve core (405) can move axially along the valve stem (401). The return spring (403) is used to drive the raw water valve core (405) to reset to the closed position. The sealing ring (404) is used to close the water passage in the closed position.

7. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 6, characterized in that: The valve stem (401) is provided with a valve stem outlet hole (4011) and a valve stem inlet hole (4012). When the raw water valve core (405) is pressed down by the raw water tank (1), the valve stem inlet hole (4012) is connected to the valve stem outlet hole (4011). When the raw water tank (1) is lifted, the raw water valve core (405) is reset under the action of the reset spring (403) and the sealing ring (404) closes the flow path between the valve stem inlet hole (4012) and the valve stem outlet hole (4011).

8. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 6, characterized in that: The raw water tank (1) is provided with a raw water inlet (101) and a check valve (102). The check valve (102) is arranged opposite to the raw water valve core (405). When the raw water tank (1) is lifted from the machine base (2), the check valve (102) closes the water inlet of the raw water tank (1), and the raw water valve core (405) closes the water passage in the machine base (2).

9. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 1, characterized in that: The base (2) is equipped with a low-pressure switch (12), a booster pump (8), a water inlet solenoid valve (18), a tap water inlet pipe (13), a filter water pipe (14), a concentrate valve (15), and a concentrate pipe (16). The tap water inlet (11) is connected to the reversing valve body (10) through the tap water inlet pipe (13). The reversing valve body (10) is connected to the water inlet of the filter assembly through the filter water pipe (14). The concentrate end of the filter assembly is connected to the reversing valve body (10) through the concentrate valve (15) and the concentrate pipe (16).

10. The water purifier drain valve body structure that can be switched between installation and installation-free operation according to claim 9, characterized in that: The filter assembly is installed in the filter element mounting groove (7) and filter element seat (9) on the filter assembly bracket (3). The purified water outlet of the filter assembly is connected to the purified water pipe (801). The low pressure switch (12) and the booster pump (8) are located in the water inlet of the filter assembly.

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