Switching valve of fluid spraying system and fluid spraying system

Abstract

The utility model discloses a switching valve of a fluid spraying system and the fluid spraying system, and the switching valve comprises a valve seat which is provided with a switching chamber, a liquid outlet pipe and a liquid inlet pipe; the liquid outlet pipe and the liquid inlet pipe are both communicated with the switching chamber; the switching assembly is arranged on the valve seat and is matched with the switching cavity to realize on-off switching between the liquid outlet pipe and the liquid inlet pipe; a main electrode is arranged on the liquid outlet pipe; an auxiliary electrode is arranged on the liquid inlet pipe; a detection circuit is connected between the main electrode and the auxiliary electrode; when liquid flows out of the liquid outlet pipe from the liquid inlet pipe through the switching cavity, the detection circuit is switched on; and when no flowing liquid exists, the detection circuit is disconnected. According to the utility model, flowing liquid is used as a conductor for conducting a detection circuit, so that the possibility of false detection caused by residual liquid is reduced.

Description

Technical Field

[0001] This utility model relates to the field of switching valves, and in particular to a switching valve and a fluid spray system for a fluid spray system. Background Technology

[0002] A fluid spray system pumps liquid from a bottle into a nozzle and sprays it out. To achieve the spraying of different liquids, the fluid spray system is equipped with a switching valve to switch the liquid. The working principle of the switching valve usually involves the movement of the valve core. By changing the position of the valve core, the fluid flow is controlled to different pipelines or systems.

[0003] The movement of the valve core can be achieved manually, electrically, or pneumatically. Fluid flow detection in switching valves is generally determined by the presence of liquid in the pipeline. However, residual liquid in the pipeline can also be mistaken for liquid flow, easily leading to false detections and affecting the monitoring of the switching valve. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a switching valve and a fluid spray system, which has the advantage of reducing the possibility of false detection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A switching valve for a fluid spray system, comprising:

[0007] The valve seat has a switching chamber, an outlet pipe, and an inlet pipe; both the outlet pipe and the inlet pipe are connected to the switching chamber.

[0008] A switching component is disposed on the valve seat and cooperates with the switching chamber to realize the switching between the liquid outlet pipe and the liquid inlet pipe;

[0009] A main electrode is provided on the liquid outlet pipe; a secondary electrode is provided on the liquid inlet pipe; a detection circuit is connected between the main electrode and the secondary electrode; when liquid flows out of the liquid outlet pipe from the liquid inlet pipe through the switching chamber, the detection circuit is turned on; when there is no flowing liquid, the detection circuit is turned off.

[0010] By adopting the above technical solution, when there is liquid flowing in the switching valve, that is, when the liquid flows out from the inlet pipe through the switching chamber and out of the outlet pipe, the liquid makes the main electrode on the outlet pipe and the secondary electrode on the inlet pipe conduct, thereby making the detection circuit conduct. When there is no liquid flowing in the switching valve, the residual liquid cannot become a conductor connecting the main electrode and the secondary electrode, so the possibility of false detection can be reduced.

[0011] Optionally, both the main electrode and the secondary electrode include an electrode sheet and an insulating connector; the insulating connector is sealed to the liquid outlet pipe or the liquid inlet pipe; the insulating connector covers the electrode sheet and exposes the inner and outer ends of the electrode sheet.

[0012] By adopting the above technical solution, the insulating connector covers the electrode plate and is connected to the liquid outlet or liquid inlet pipe, which reduces the possibility of leakage and improves the safety of use.

[0013] Optionally, the outlet pipe and the inlet pipe are formed with detection ports; the insulating connector is formed with a sealing protrusion adapted to the detection port; the sealing protrusion seals and blocks the detection port.

[0014] By adopting the above technical solution, the sealing protrusion blocks the detection port, improving the sealing performance of the liquid outlet and inlet pipes, while avoiding leakage and accidental electrical conduction caused by leakage, thus improving safety in use.

[0015] Optionally, a sealing protrusion is formed on the outlet pipe and the inlet pipe along the circumference of the detection port; a sealing groove is formed on the insulating connector for the sealing protrusion to be inserted.

[0016] By adopting the above technical solution, the sealing convex ring is inserted into the sealing groove, which increases the sealing path and effectively improves the sealing performance of the liquid outlet pipe and the liquid inlet pipe. At the same time, it avoids leakage and accidental electrical conduction caused by leakage, thereby improving the safety of use.

[0017] Optionally, the insulating connector is made of an elastic material or plastic.

[0018] By adopting the above technical solutions, an insulating connector made of elastic material is used to make an interference seal with the liquid outlet pipe and the liquid inlet pipe, which improves the sealing performance and reduces the possibility of the insulating connector accidentally falling off; an insulating connector made of plastic can also achieve the above effect by heat-melting and sealing with the liquid outlet pipe and the liquid inlet pipe.

[0019] Optionally, the insulating connector is formed with an annular abutment portion; the abutment portion is distributed circumferentially along the detection port and abuts against the liquid outlet pipe or the liquid inlet pipe.

[0020] By adopting the above technical solution, the annular abutment portion further reduces the gap between the insulating connector and the outlet and inlet pipes, thus improving the sealing performance.

[0021] Optionally, the valve seat has at least two inlet pipes; each inlet pipe is provided with a secondary electrode; each secondary electrode is connected to the main electrode with an independent detection circuit; the switching component is used to switch the on / off state between any of the inlet pipes and the outlet pipes.

[0022] By adopting the above technical solution, the number of inlet pipes is at least two, which can meet the switching needs of multiple liquids; each inlet pipe is equipped with a secondary electrode, which can detect which inlet pipe is receiving liquid. Since different inlet pipes are generally set to be used for different liquids, it is possible to determine which liquid the switching valve is switching to, and at the same time realize the monitoring of this liquid.

[0023] Optionally, the valve seat has three inlet pipes; the switching chamber includes a first chamber, a second chamber, and an intermediate channel; the intermediate channel connects the first chamber and the second chamber; the outlet pipe and one of the inlet pipes are connected to the first chamber, and the other two inlet pipes are connected to the second chamber; the switching assembly includes a first switching element and a second switching element; the first switching element is used to block the connection between the inlet pipe and the first chamber or the connection between the intermediate channel and the first chamber; the second switching element is used to block the connection between any of the inlet pipes and the second chamber.

[0024] By adopting the above technical solution, when the first switching component closes the connection between the intermediate channel and the first chamber, the inlet pipe connected to the first chamber is connected to the outlet pipe through the first chamber; when the first switching component closes the connection between the inlet pipe and the first chamber, the inlet pipe that is not closed by the second switching component among the two inlet pipes connected to the second chamber is connected to the outlet pipe through the second chamber, the intermediate channel, and the first chamber; then the second switching component closes this inlet pipe and opens another inlet pipe, so that the other inlet pipe is connected to the outlet pipe through the second chamber, the intermediate channel, and the first chamber. The switching of the three inlet pipes is completed in the above manner. This design is simple, compact, and convenient in layout.

[0025] Optionally, the first switching element includes:

[0026] The first switching valve core moves linearly within the first chamber;

[0027] The first switching drive unit drives the first switching valve core to block the connection port between the liquid inlet pipe and the first chamber or the connection port between the intermediate channel and the first chamber.

[0028] The second switching component includes:

[0029] The second switching valve core moves linearly within the second chamber;

[0030] The second switching drive unit drives the second switching valve core to block the connection port between any of the inlet pipes and the second chamber.

[0031] By adopting the above technical solution, both the first switching valve core and the second switching valve core complete the switching action through linear movement, which makes the switching fast and convenient to drive.

[0032] A fluid spray system includes the aforementioned switching valve.

[0033] By adopting the above technical solution, the fluid spray system uses the flowing liquid as a conductor for the detection circuit, reducing the possibility of false detection caused by residual liquid; it can determine which liquid the switching valve switches to, and at the same time realize the monitoring of this liquid.

[0034] In summary, the beneficial effects of this utility model are as follows:

[0035] 1. By using flowing liquid as a conductor for the detection circuit, the possibility of false detection caused by residual liquid is reduced.

[0036] 2. All inlet pipes are equipped with auxiliary electrodes, which, together with the main electrode on the outlet pipe, can determine which liquid the switching valve is switched to, and simultaneously monitor this liquid.

[0037] 3. The pipeline connections for the main electrode and the auxiliary electrode entering and exiting the liquid have good sealing performance.

[0038] 4. The switching valve has a simple design, compact structure, and convenient layout. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model.

[0040] Figure 2 This is a schematic diagram of the structure of a partial explosion of this utility model.

[0041] Figure 3 This is a schematic diagram of the structure of a partial explosion of this utility model.

[0042] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0043] Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0044] Figure 6 This is a schematic diagram of the electrode sheet of this utility model.

[0045] Figure 7 This is a schematic diagram of the structure of the insulating connector of this utility model.

[0046] Figure 8 This is a schematic diagram of the fluid spray system of this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Switching seat; 100. Second chamber; 102. Intermediate channel; 103. First chamber; 11. Discharge connection pipe; 12. First connection pipe; 13. Third connection pipe; 14. Second connection pipe; 15. Limiting slot; 16. Radial locking block;

[0049] 20. First switching drive component; 21. First valve core;

[0050] 30. Second switching drive unit; 31. Second valve core;

[0051] 40. U-shaped card plate; 400. Card slot; 401. Radial card slot;

[0052] 60. Liquid inlet / outlet seat; 61. Liquid inlet / outlet support plate; 62. Liquid outlet pipe; 620. Detection port; 621. Sealing ring; 63. First liquid inlet pipe; 64. Second liquid inlet pipe; 65. Third liquid inlet pipe;

[0053] 70. Main electrode; 71. Electrode sheet; 711. Bending part; 72. Insulating connector; 720. Sealing groove; 721. Sealing protrusion; 722. Abutment part;

[0054] 80. Secondary electrode. Detailed Implementation

[0055] The following is in conjunction with the appendix Figure 1-8 The present invention will be described in further detail below.

[0056] Example 1: A switching valve for a fluid spray system is disclosed, referencing... Figure 1 and Figure 2 It includes a valve seat and a switching assembly; the valve seat includes a switching seat 10 and an inlet / outlet liquid seat 60; the switching seat 10 is provided with a switching chamber; the inlet / outlet liquid seat 60 is connected to the switching seat 10; the switching assembly is provided on the switching seat 10.

[0057] refer to Figure 2 The inlet / outlet liquid seat 60 is integrally injection molded; the inlet / outlet liquid seat 60 includes an inlet / outlet liquid support plate 61, an outlet pipe 62, a first inlet pipe 63, a second inlet pipe 64, and a third inlet pipe 65; the outlet pipe 62, the first inlet pipe 63, the second inlet pipe 64, and the third inlet pipe 65 are all formed on the inlet / outlet liquid support plate 61; the inlet / outlet liquid support plate 61 is connected to the switching seat 10 by a snap fastener, and then fixed to the switching seat 10 by screws. The cooperation of the snap fastener and the screws helps to improve the accuracy of the installation position and the installation stability of the inlet / outlet liquid seat 60.

[0058] refer to Figure 2 and Figure 5The main electrode 70 is connected to the liquid outlet pipe 62; the auxiliary electrode 80 is connected to the first liquid inlet pipe 63; the main electrode 70 and the auxiliary electrode 80 have the same structure; the first liquid inlet pipe 63 and the liquid outlet pipe 62 are formed with detection ports 620.

[0059] refer to Figure 2 , Figure 5 and Figure 8 The main electrode 70 includes an electrode sheet 71 and an insulating connector 72. The insulating connector 72 is made of an insulating material and is elastic, such as rubber. The main electrode 70 is formed by injection molding the insulating connector 72 onto the electrode sheet 71. The insulating connector 72 covers the electrode sheet 71 and exposes the inner and outer ends of the electrode sheet 71. The inner end of the insulating connector 72 is formed with a sealing protrusion 721 that matches the detection port. Because the insulating connector 72 itself is elastic, the sealing protrusion 721 can be firmly stuck in the detection port and is not easy to fall off, thus improving the sealing performance. Of course, the insulating connector 72 can also be made of plastic. In this case, the insulating connector 72 is heat-fused and sealed to the liquid outlet pipe 62 and the first liquid inlet pipe 63, which also has the above-mentioned effect.

[0060] To further improve sealing performance, refer to Figure 2 , Figure 5 and Figure 7 A sealing protrusion 621 is formed on the outlet pipe 62; the sealing protrusion 621 is distributed circumferentially along the detection port; a sealing groove 720 for the sealing protrusion 621 to be inserted is formed on the insulating connector 72. Additionally, an annular abutment portion 722 is formed on the inner side of the insulating connector 72. The abutment portion 722 is located between the sealing groove 720 and the sealing protrusion 721 and abuts against the outer surface of the outlet pipe 62; the cross-section of the abutment portion 722 is triangular, and its pointed corner abuts against the outer surface of the outlet pipe 62.

[0061] To increase the connection strength between electrode 71 and insulating connector 72, refer to Figure 6 The electrode sheet 71 has a bent portion 711 formed by stamping. Alternatively, serrated portions can be formed on both sides of the inner end of the electrode sheet 71. This way, when the electrode sheet 71 and the insulating connector 72 are separated by forces in opposite directions, the electrode sheet 71 and the insulating connector 72 are not easily separated.

[0062] refer to Figure 2The connection method between the secondary electrode 80 and the first inlet pipe 63 is the same as the connection method between the main electrode 70 and the outlet pipe 62. In addition, the inner end of the electrode plate 71 of the secondary electrode 80 extends into the first inlet pipe 63, and the inner end of the electrode plate 71 of the main electrode 70 extends into the outlet pipe 62. At the same time, a detection circuit is connected between the outer ends of the electrode plates 71 of the main electrode 70 and the electrode plates 71 of the secondary electrode 80. In this way, when liquid enters from the first inlet pipe 63 and flows out from the outlet pipe 62 through the switching chamber, the detection circuit will be activated, thereby achieving the purpose of detection. However, when there is only residual liquid, the detection circuit will not be activated, so that there will be no situation where only residual liquid is detected and the display shows that there is flowing liquid, thus reducing the false detection rate.

[0063] refer to Figures 1-4 The switching seat 10 is composed of a first seat body and a second seat body connected by a snap-fit ​​mechanism.

[0064] Both the first and second housings include an upper shell and a lower shell, which are integrally injection molded and connected by screws. A sealing ring is provided between the upper and lower shells.

[0065] refer to Figure 4 The lower shell of the first base is formed with a first connecting pipe 12, and the upper shell is formed with a liquid outlet connecting pipe 11. The upper shell of the first base is formed with a first chamber groove and an intermediate channel 102. One end of the intermediate channel 102 is connected to the first chamber groove. One end of the first connecting pipe 12 is connected to the first chamber groove. The lower shell of the first base seals the first chamber groove to form a first chamber 103. The liquid outlet connecting pipe 11 is connected to the first chamber 103. The connection port of the first connecting pipe 12 to the first chamber 103 and the connection port of the intermediate channel 102 to the first chamber groove are coaxially arranged.

[0066] refer to Figure 4 The lower shell of the second seat is formed with a third connecting pipe 13, and the upper shell is formed with a second connecting pipe 14. The upper shell of the second seat is formed with a second chamber groove. One end of the second connecting pipe 14 is connected to the second chamber groove. The lower shell of the second seat seals the second chamber groove to form a second chamber 100. The ends of the third connecting pipe 13 and the intermediate channel 102 away from the first chamber 103 are both connected to the second chamber 100. The end of the intermediate channel 102 away from the first chamber 103 is inserted into the second chamber 100 and fitted with a sealing ring. This sealing ring is pressed between the first seat and the second seat. The connection port of the second connecting pipe 14 to the second chamber groove and the connection port of the third connecting pipe 13 to the second chamber 100 are coaxially arranged.

[0067] refer to Figure 4The switching assembly includes a first switching component and a second switching component. The first switching component includes a first valve core 21 located in the first chamber 103 and a first switching drive component 20 for driving the first valve core 21. The first switching drive component 20 is fixed on the upper shell of the first base. The first switching drive component 20 includes a first switching drive rod and a first electromagnetic drive component for axial movement of the first switching drive rod. The specific structure of the first switching drive component 20 is based on existing electromagnetically driven switching valves. The first switching drive rod coaxially passes through the connection port between the intermediate channel 102 and the first chamber groove, and the diameter of the first switching drive rod is smaller than the opening diameter of the connection port between the intermediate channel 102 and the first chamber groove. The first valve core 21 is fixed on the first switching drive rod. When the first valve core 21 abuts against the connection port between the first connecting pipe 12 and the first chamber 103, this connection port is closed. When the first valve core 21 abuts against the connection port between the intermediate channel 102 and the first chamber groove, this connection port is closed.

[0068] refer to Figure 4 The second switching component includes a second valve core 31 located within the second chamber 100 and a second switching drive component 30 for driving the second valve core 31. The second switching drive component 30 is fixed to the upper shell of the second seat. The second switching drive component 30 includes a second switching drive rod and a second electromagnetic drive component for axial movement of the second switching drive rod. The specific structure of the second switching drive component 30 is based on existing electromagnetically driven switching valves. The second switching drive rod coaxially passes through the connection port between the second connecting pipe 14 and the second chamber groove, and the diameter of the second switching drive rod is smaller than the opening diameter of the connection port between the second connecting pipe 14 and the second chamber groove. The second valve core 31 is fixed to the second switching drive rod. When the second valve core 31 abuts against the connection port between the third connecting pipe 13 and the second chamber 100, this connection port is closed. When the second valve core 31 abuts against the connection port between the second connecting pipe 14 and the second chamber groove, this connection port is closed.

[0069] refer to Figure 2 A sealing ring is fitted on the end of the liquid outlet connecting pipe 11 away from the switching seat 10, the end of the first connecting pipe 12 away from the switching seat 10, the end of the third connecting pipe 13 away from the switching seat 10, and the end of the second connecting pipe 14 away from the switching seat 10; the end of the liquid outlet connecting pipe 11 away from the switching seat 10 is coaxially inserted into the liquid outlet pipe 62; the end of the first connecting pipe 12 away from the switching seat 10 is coaxially inserted into the first liquid inlet pipe 63; the end of the third connecting pipe 13 away from the switching seat 10 is coaxially inserted into the third liquid inlet pipe 65; and the end of the second connecting pipe 14 away from the switching seat 10 is coaxially inserted into the second liquid inlet pipe 64.

[0070] During switching, when the first valve core 21 abuts against the connection port between the intermediate channel 102 and the first chamber groove, the first connecting pipe 12 is connected to the liquid outlet connecting pipe 11 through the first chamber 103; when the first valve core 21 abuts against the connection port between the first connecting pipe 12 and the first chamber 103, and the second valve core 31 abuts against the connection port between the third connecting pipe 13 and the second chamber 100, the second connecting pipe 14 is connected to the liquid outlet connecting pipe 11 through the second chamber 100, the intermediate channel 102, and the first chamber 103; when the first valve core 21 abuts against the connection port between the first connecting pipe 12 and the first chamber 103, and the second valve core 31 abuts against the connection port between the second connecting pipe 14 and the second chamber groove, the third connecting pipe 13 is connected to the liquid outlet connecting pipe 11 through the second chamber 100, the intermediate channel 102, and the first chamber 103.

[0071] To increase the connection stability of switch 10, refer to Figure 3 Two annular limiting slots 15 are formed at the ends of the upper shells of the first and second seats away from the lower shell, respectively. A U-shaped locking plate 40 is installed on the switching seat 10. One end of the U-shaped locking plate has two slots 400 that mate with the limiting slots 15, and the other end abuts against the ends of the first switching drive member 20 and the second switching drive member 30 away from the switching seat 10. To further improve the connection stability of the switching seat 10, radially arranged radial locking blocks 16 are formed inside the limiting slots 15. Radial slots 401 that mate with the radial locking blocks 16 are formed on the limiting slots 15. Alternatively, screws can be used to fix the first and second seats together.

[0072] Example 2: The difference between Example 2 and Example 1 is that the second inlet pipe 64 and the third inlet pipe 65 are also connected to the auxiliary electrode 80. The connection method between the auxiliary electrode 80 and the second inlet pipe 64 and the third inlet pipe 65 is the same as that between the auxiliary electrode 80 and the first inlet pipe 63. The three auxiliary electrodes 80 are connected to the main electrode 70 respectively by detection circuits. In this way, it can be clearly known which inlet pipe the switching valve switches to and the flow situation in this liquid channel.

[0073] A fluid spray system, reference Figure 8The system includes a nozzle 93, an air pump 92, a first reagent bottle 90, a second reagent bottle 91, and the aforementioned switching valve. The first reagent bottle 90 and the second reagent bottle 91 contain different liquids. The air pump 92 has its outlet connected to the nozzle 93 and its inlet connected to the atmosphere. The first reagent bottle 90 is connected to the first inlet pipe 63 of the switching valve. The second reagent bottle 91 is connected to the second inlet pipe 64 of the switching valve. The third inlet pipe 65 of the switching valve is connected to the atmosphere. The outlet pipe 62 of the switching valve is connected to the nozzle 93. During operation, the switching valve connects the first inlet pipe 63, the second inlet pipe 64, or the third inlet pipe 65 to the outlet pipe 62. The high-speed airflow generated by the air pump 92 enters the nozzle 93, creating a negative pressure. This causes liquid or gas to enter the nozzle 93 along the outlet pipe 62. The high-speed airflow impacts the liquid, dispersing it into fine droplets that are ejected from the nozzle 93.

[0074] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A switching valve for a fluid spray system, comprising: The valve seat has a switching chamber, an outlet pipe, and an inlet pipe; both the outlet pipe and the inlet pipe are connected to the switching chamber. A switching component is disposed on the valve seat and cooperates with the switching chamber to realize the switching between the liquid outlet pipe and the liquid inlet pipe; The features are as follows: a main electrode is provided on the liquid outlet pipe; a secondary electrode is provided on the liquid inlet pipe; a detection circuit is connected between the main electrode and the secondary electrode; when liquid flows out of the liquid outlet pipe from the liquid inlet pipe through the switching chamber, the detection circuit is turned on; when there is no flowing liquid, the detection circuit is turned off.

2. The switching valve of a fluid spray system according to claim 1, characterized in that: Both the main electrode and the secondary electrode include an electrode sheet and an insulating connector; the insulating connector is sealed to the liquid outlet pipe or the liquid inlet pipe; the insulating connector covers the electrode sheet and exposes the inner and outer ends of the electrode sheet.

3. The switching valve of a fluid spray system according to claim 2, characterized in that: The outlet pipe and the inlet pipe are formed with detection ports; the insulating connector is formed with a sealing protrusion adapted to the detection port; the sealing protrusion seals and blocks the detection port.

4. The switching valve of a fluid spray system according to claim 3, characterized in that: The outlet pipe and the inlet pipe are formed with sealing protrusions around the detection port; the insulating connector is formed with a sealing groove for the sealing protrusions to be inserted.

5. A switching valve for a fluid spray system according to claim 3 or 4, characterized in that: The insulating connector is made of elastic material or plastic.

6. A switching valve for a fluid spray system according to claim 5, characterized in that: The insulating connector has an annular abutment portion formed on it; the abutment portion is distributed circumferentially along the detection port and abuts against the liquid outlet pipe or the liquid inlet pipe.

7. The switching valve of a fluid spray system according to claim 1, characterized in that: The valve seat has at least two inlet pipes; each inlet pipe is provided with a secondary electrode; each secondary electrode is connected to the main electrode with an independent detection circuit; the switching component is used to switch the on / off state between any of the inlet pipes and the outlet pipes.

8. The switching valve of a fluid spray system according to claim 7, characterized in that: The valve seat has three inlet pipes; the switching chamber includes a first chamber, a second chamber, and an intermediate channel; the intermediate channel connects the first chamber and the second chamber; the outlet pipe and one of the inlet pipes are connected to the first chamber, and the other two inlet pipes are connected to the second chamber; the switching assembly includes a first switching element and a second switching element; the first switching element is used to block the connection between the inlet pipe and the first chamber or the connection between the intermediate channel and the first chamber; the second switching element is used to block the connection between any of the inlet pipes and the second chamber.

9. A switching valve for a fluid spray system according to claim 8, characterized in that: The first switching element includes: The first switching valve core moves within the first chamber; The first switching drive unit drives the first switching valve core to block the connection port between the liquid inlet pipe and the first chamber or the connection port between the intermediate channel and the first chamber. The second switching component includes: The second switching valve core moves within the second chamber; The second switching drive unit drives the second switching valve core to block the connection port between any of the inlet pipes and the second chamber.

10. A fluid spray system, characterized in that: Includes the switching valve described in any one of claims 1-9.

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