Automatic liquid changing structure

Abstract

The utility model relates to the technical field of aerosol generators, and provides an automatic liquid changing structure which comprises a spray bottle provided with a liquid inlet and a liquid outlet, and further comprises a first pump outlet, a second pump outlet, a third pump outlet and a fourth pump outlet, the solvent bottle is communicated with an inlet of the first pump, and the first pump is used for pumping a solvent in the solvent bottle into the spray bottle; the second pump inlet is communicated with the liquid outlet; the waste liquid bottle is communicated with an outlet of the second pump, and the second pump is used for pumping the solution in the spray bottle into the waste liquid bottle. According to the technical scheme, the problem that an aerosol generator in the prior art is difficult in solution concentration adjustment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosol generators, and in particular to an automatic liquid replacement structure. Background Art

[0002] There are many ways to generate aerosols, among which the use of salt solution compressed air spray is relatively simple and practical. The salt solution aerosol generator is a special instrument that uses a specific fine-pore nozzle to atomize and dry a specific concentration of NaCl solution under the action of high-speed compressed airflow to produce aerosols of specific particle size and concentration. The instrument has built-in auxiliary devices such as a clean air compressor, a drying device, an airflow pressure regulating valve, and an electrostatic neutralizer. The output aerosol of controllable concentration can be used for process control inspections in industries such as environmental particulate matter monitoring equipment calibration, medical device inspection, and pharmaceutical production.

[0003] The aerosol generating device needs to generate different aerosol concentrations, and the corresponding original solution reagent concentrations are also different. When the aerosol generating device currently on the market needs to adjust the solution concentration or replenish the solution, most of the reagent bottles containing the reagents need to be manually removed to replace the reagents, which will cause many inconveniences when operating on-site in some occasions that require continuous work. Utility Model Content

[0004] The utility model provides an automatic liquid replacement structure, which solves the problem of difficulty in adjusting solution concentration of an aerosol generator in the related art.

[0005] The technical solution of the utility model is as follows:

[0006] An automatic liquid replacement structure comprises a spray bottle, wherein the spray bottle has a liquid inlet and a liquid outlet, and further comprises:

[0007] a first pump, wherein the first pump outlet is connected to the liquid inlet;

[0008] A solvent bottle, the solvent bottle is connected to the first pump inlet, and the first pump is used to pump the solvent in the solvent bottle into the spray bottle;

[0009] a second pump, wherein the inlet of the second pump is connected to the discharge port;

[0010] A waste liquid bottle is connected to the outlet of the second pump, and the second pump is used to pump the solution in the spray bottle into the waste liquid bottle.

[0011] Optionally, also include:

[0012] A two-position three-way valve A, through which the first pump inlet is connected to the solvent bottle;

[0013] A cleaning liquid bottle is connected to the first pump inlet through the two-position three-way valve A.

[0014] Optionally, also include:

[0015] An air inlet pipe is arranged in the spray bottle, and the air inlet pipe passes through the spray bottle and is connected to an air source;

[0016] A plurality of nozzles are provided on the air inlet pipe at circumferential intervals, the nozzles are communicated with the air inlet pipe, and the nozzles are located inside the spray bottle and close to the bottom.

[0017] Optionally, the air inlet pipe is slidably disposed in the spray bottle, further comprising:

[0018] A first telescopic member, disposed on the top of the spray bottle, wherein a telescopic end of the first telescopic member is connected to the air inlet pipe, and the first telescopic member is used to drive the air inlet pipe to slide;

[0019] A quick-connect female connector is arranged in the air inlet pipe;

[0020] A quick-connect male connector is disposed in the spray bottle and is located at the bottom of the spray bottle. After the air inlet pipe slides, the quick-connect female connector is connected to or disconnected from the quick-connect male connector.

[0021] The jet pipe is rotatably arranged on the quick-connect male head, the rotation axis of the jet pipe is coaxial with the quick-connect male head, the jet pipe has a plurality of through holes, and a plurality of the through holes are connected with the quick-connect male head. After the plurality of through holes spray air, the jet pipe rotates;

[0022] A scraper is arranged on the jet pipe, and the scraper abuts against the inner wall of the spray bottle.

[0023] Optionally, the quick-connect female connector is sealingly and slidably disposed in the air inlet pipe, and further comprises:

[0024] A baffle is arranged on the quick-connect female head. After the quick-connect female head is connected with the quick-connect male head, the quick-connect female head slides and the baffle closes the nozzle;

[0025] An elastic member, with two ends respectively arranged on the quick-connect female head and the air inlet pipe, and the elastic member is used to provide a force for the quick-connect female head to approach the quick-connect male head.

[0026] Optionally, also include:

[0027] A two-position three-way valve B, through which the second pump is connected to the waste liquid bottle and the solvent bottle.

[0028] Optionally, also include:

[0029] Liquid flow sensor, the two-position three-way valve B is connected to the solvent bottle through the liquid flow sensor.

[0030] Optionally, also include:

[0031] A liquid level sensor is arranged in the spray bottle, and the liquid level sensor is used to detect the height of the liquid level in the spray bottle.

[0032] Optionally, also include:

[0033] An electrical control module, wherein the electrical control module is electrically connected to the first pump, the second pump, the two-position three-way valve A, the two-position three-way valve B, the liquid flow sensor and the liquid level sensor.

[0034] Optionally, also include:

[0035] A liquid inlet pipe is arranged in the spray bottle, one end of the liquid inlet pipe is connected to the liquid inlet, and the other end of the liquid inlet pipe is located at the bottom of the spray bottle.

[0036] The working principle and beneficial effects of the utility model are:

[0037] In the utility model, when the misting is finished, it is necessary to replace the pre-placed solutions of different concentrations. At this time, it is the liquid replacement mode. First, the liquid discharge action is started: the second pump is turned on to extract the remaining solution in the spray bottle from the bottom liquid discharge port and transport it to the waste liquid bottle; after the liquid discharge is completed, the liquid replenishment action is started: the second pump is closed, the first pump is turned on, and the solution in the solution bottle is transported to the spray bottle. The concentration of the solution in the solution bottle is different from the concentration of the solution in the previous spray bottle, thereby realizing the replacement of solutions of different concentrations. Solutions of different concentrations can be replaced without changing the spray bottle, and the process is simpler and more convenient.

[0038] In addition, it can also be a refill mode: during normal misting operation, the liquid level in the spray bottle is lower than the limit value, the first pump works to transfer the solution from the solution bottle to the spray bottle. This working mode can ensure that the solution level in the spray bottle is always within a relatively stable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0040] Figure 1 It is a schematic diagram of the structure of the utility model;

[0041] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0042] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0043] Figure 4 This is a schematic diagram of the connection of various structures in the liquid replacement mode of the utility model;

[0044] Figure 5 This is a schematic diagram of the connection of various structures in the liquid replenishment mode of the utility model;

[0045] Figure 6 This is a schematic diagram of the connection of various structures in the circulation reflux mode of the utility model;

[0046] In the figure: 100, spray bottle, 101, liquid inlet, 102, liquid discharge port, 200, first pump, 300, solvent bottle, 400, second pump, 500, waste liquid bottle, 600, two-position three-way valve A, 700, cleaning liquid bottle, 801, air inlet pipe, 802, nozzle, 803, first telescopic part, 804, quick-connect female head, 805, quick-connect male head, 806, jet pipe, 8061, through hole, 807, scraper, 808, baffle, 809, elastic part, 900, two-position three-way valve B, 110, liquid flow sensor, 120, liquid level sensor, 130, electrical control module, 140, liquid inlet pipe. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0048] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0049] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] Example 1

[0052] Reference Figure 1~Figure 4 , which is the first embodiment of the utility model, proposes an automatic liquid replacement structure, including a spray bottle 100, the spray bottle 100 has a liquid inlet 101 and a liquid discharge port 102, and also includes: the outlet of a first pump 200 is connected to the liquid inlet 101; the solvent bottle 300 is connected to the inlet of the first pump 200, and the first pump 200 is used to pump the solvent in the solvent bottle 300 into the spray bottle 100; the inlet of a second pump 400 is connected to the liquid discharge port 102; the waste liquid bottle 500 is connected to the outlet of the second pump 400, and the second pump 400 is used to pump the solution in the spray bottle 100 into the waste liquid bottle 500.

[0053] In this embodiment, after the spraying is completed, it is necessary to replace the pre-placed solutions of different concentrations, and this is the liquid replacement mode. First, the drainage action is started: the second pump 400 is turned on, and the remaining solution in the spray bottle 100 is extracted from the bottom drainage port 102 and transported to the waste liquid bottle 500. After the drainage is completed, the rehydration action is started: the second pump 400 is turned off, and the first pump 200 is turned on to pump the solution in the solvent bottle 300 into the spray bottle 100. At this time, the concentration of the solution in the solvent bottle 300 is different from the concentration of the solution in the previous spray bottle 100, thereby realizing the replacement of solutions of different concentrations. In this way, the replacement between solutions of different concentrations can be achieved without replacing the spray bottle 100, and the process is simpler and more convenient.

[0054] In addition, a liquid replenishment mode is provided: in normal spraying operation, when the liquid level in the spray bottle 100 is lower than the limit value, the first pump 200 works to transfer the solution in the solvent bottle 300 to the spray bottle 100. This working mode can ensure that the liquid level in the spray bottle 100 is always kept within a relatively stable range.

[0055] Furthermore, it also includes: the inlet of the first pump 200 is connected to the solvent bottle 300 through a two-position three-way valve A600; the cleaning liquid bottle 700 is connected to the inlet of the first pump 200 through a two-position three-way valve A600.

[0056] In this embodiment, after the liquid discharge action is completed, in order to make the spray bottle 100 cleaner, a cleaning action is performed before the liquid replenishment action: after the liquid discharge action is completed, the cleaning liquid bottle 700 is connected to the first pump 200 through the two-position three-way valve A600, and the first pump 200 delivers the cleaning liquid to the spray bottle 100 to rinse the spray bottle 100. After rinsing, the first pump 200 is closed, and the second pump 400 is opened to pump the cleaning liquid in the spray bottle 100 into the waste liquid bottle 500, and the spray bottle 100 can be repeatedly cleaned. After the cleaning is completed, the first pump 200 is reconnected with the solvent bottle 300 through the two-position three-way valve A600, and the solution in the solvent bottle 300 is delivered to the spray bottle 100. Through the cleaning step, the previous solution residue can be effectively removed, the mixing of solutions of different concentrations can be avoided, and the use effect of the aerosol can be ensured.

[0057] Furthermore, it also includes: an air inlet pipe 801 is arranged in the spray bottle 100, and the air inlet pipe 801 passes through the spray bottle 100 and is connected to the air source; there are a plurality of nozzles 802, which are arranged on the air inlet pipe 801 at circumferential intervals, and the nozzles 802 are connected to the air inlet pipe 801, and the nozzles 802 are located inside the spray bottle 100 and close to the bottom.

[0058] In this embodiment, in order to improve the use effect of the spray bottle 100, the air inlet pipe 801 is connected to the spray bottle 100 near the bottom, and is provided with a plurality of nozzles 802. The high-speed compressed airflow is sprayed into the solution through the nozzles 802, so that the high-speed compressed airflow and the solution are mixed more fully, thereby producing a better aerosol effect.

[0059] Furthermore, the air inlet pipe 801 is slidably arranged in the spray bottle 100, and further comprises: a first telescopic member 803 is arranged at the top of the spray bottle 100, the telescopic end of the first telescopic member 803 is connected to the air inlet pipe 801, and the first telescopic member 803 is used to drive the air inlet pipe 801 to slide; a quick-connect female head 804 is arranged in the air inlet pipe 801; a quick-connect male head 805 is arranged in the spray bottle 100 and is located at the bottom of the spray bottle 100, and after the air inlet pipe 801 slides, the quick-connect female head 804 is connected with or disconnected from the quick-connect male connector 805; the jet tube 806 is rotatably arranged on the quick-connect male connector 805, the rotation axis of the jet tube 806 is coaxial with the quick-connect male connector 805, the jet tube 806 has a plurality of through holes 8061, the plurality of through holes 8061 are connected with the quick-connect male connector 805, and after the plurality of through holes 8061 spray, the jet tube 806 rotates; the scraper 807 is arranged on the jet tube 806, and the scraper 807 abuts against the inner wall of the spray bottle 100.

[0060] In this embodiment, in order to make the spray bottle 100 clean more thoroughly, a scraper 807 is provided in the spray bottle 100. The scraper 807 is rotated to scrape off the residual solution on the inner wall of the spray bottle 100. The specific process is: the first telescopic member 803 drives the air inlet pipe 801 to descend, and the quick-connect female head 804 in the air inlet pipe 801 is connected with the quick-connect male head 805 in the spray bottle 100 (the quick-connect male head 805 and the quick-connect female head 804 are quick-connect plugs in the prior art). The air inlet pipe 801 is connected to the air source, and the high-speed compressed airflow passes through the quick-connect female head 804 and the quick-connect male head 805 into the jet pipe 806. The high-speed compressed airflow is ejected from the through hole 8061. Under the action of the high-speed compressed airflow, the jet pipe 806 rotates, and the scraper 807 scrapes off the residual solution on the inner wall of the spray bottle 100. When the scraper 807 rotates, the first pump 200 pumps the cleaning liquid into the spray bottle 100. The scraper 807 scrapes off the residual solution on the inner wall of the spray bottle 100 and cleans the spray bottle 100 with the cleaning liquid, making the inside of the spray bottle 100 cleaner.

[0061] Furthermore, the quick-connect female head 804 is sealingly and slidably arranged in the air inlet pipe 801, and also includes: a baffle 808 is arranged on the quick-connect female head 804, after the quick-connect female head 804 is connected with the quick-connect male head 805, the quick-connect female head 804 slides and the baffle 808 closes the nozzle 802; the two ends of the elastic member 809 are respectively arranged on the quick-connect female head 804 and the air inlet pipe 801, and the elastic member 809 is used to provide a force for the quick-connect female head 804 to approach the quick-connect male head 805.

[0062] In this embodiment, in order to prevent the high-speed compressed air flow from leaking from the nozzle 802 during the cleaning process, the quick-connect female connector 804 is sealingly slidably arranged in the air inlet pipe 801. When the quick-connect female connector 804 is connected to the quick-connect male connector 805, the quick-connect female connector 804 rises, and the baffle 808 closes the nozzle 802, so that the high-speed compressed air flow cannot be ejected from the nozzle 802 and can only be discharged from the through hole 8061, thereby making the scraper 807 rotate more smoothly.

[0063] Furthermore, it also includes: a liquid inlet pipe 140 is arranged in the spray bottle 100, one end of the liquid inlet pipe 140 is connected to the liquid inlet 101, and the other end of the liquid inlet pipe 140 is located at the bottom of the spray bottle 100.

[0064] In this embodiment, in order to make the liquid inlet of the spray bottle 100 smoother, the liquid inlet pipe 140 is located at the bottom of the spray bottle 100, which is equivalent to liquid inlet from the bottom, thereby avoiding splashing during the liquid inlet process.

[0065] Example 2

[0066] Reference Figure 1 , Figure 4 , Figure 6 As shown, based on Example 1, it also includes:

[0067] The second pump 400 is connected to the waste liquid bottle 500 and the solvent bottle 300 through the two-position three-way valve B900.

[0068] In this embodiment, in order to make the spray bottle 100 work better, the second pump 400 is connected to the waste liquid bottle 500 and the solvent bottle 300 through the two-position three-way valve B900, so as to have different working modes, namely, liquid replacement mode and circulation reflux mode. The working process of the liquid replacement mode is the same as that of embodiment 1, the main difference being that the second pump 400 is connected to the waste liquid bottle 500 and the solvent bottle 300 through the two-position three-way valve B900.

[0069] In some measurement and calibration occasions where low-concentration aerosols need to be output, due to the limited volume of the solution in the spray bottle 100, as the spray time goes by, the volatilization of water vapor will cause the concentration of the solution to increase, thereby affecting the concentration of the final output aerosol. The circulation reflux mode realizes the instant exchange of the solvent in the spray bottle 100 with the solvent in the large-volume solution bottle by the first pump 200 and the second pump 400 performing liquid inlet and liquid discharge operations at the same time. The specific working process of the circulation reflux mode is as follows: the first pump 200 and the second pump 400 are started at the same time, the two-position three-way valve A600 is switched to the state where the first pump 200 is connected to the solution bottle, and the two-position three-way valve B900 is in the state where the solution bottle is connected to the second pump 400. At this time, the first pump 200 pumps the solution in the solution bottle into the spray bottle 100, and at the same time, the second pump 400 extracts the solution in the spray bottle 100 and sends it back to the solution bottle, thereby realizing the circulation of the solution. The circulation reflux mode effectively ensures the stability of the solution concentration in the spray bottle 100, thereby realizing the stable output of the aerosol concentration.

[0070] Example 3

[0071] Reference Figure 1 , Figure 4 , Figure 6 As shown, based on Example 2, a two-position three-way valve B900 is further included, which is connected to the solvent bottle 300 through the liquid flow sensor 110.

[0072] In this embodiment, in the circulation reflux mode, the liquid flow sensor 110 monitors the flow rate of the solution pumped out by the second pump 400 in real time to detect the liquid delivery flow rate, thereby avoiding abnormalities of the spray bottle 100 during use.

[0073] Example 4

[0074] Reference Figure 1 , Figure 4~Figure 6 As shown, based on the third embodiment, it further includes: a liquid level sensor 120 is disposed in the spray bottle 100 , and the liquid level sensor 120 is used to detect the height of the liquid level in the spray bottle 100 .

[0075] In this embodiment, the liquid level in the spray bottle 100 is detected in real time by means of the liquid level sensor 120, and the working states of the first pump 200 and the second pump 400 are adjusted accordingly to ensure the normal operation of the spray bottle 100. In particular, in the liquid replenishment mode, when the liquid level sensor 120 detects that the liquid level is lower than the set limit during the normal spraying process, the first pump 200 starts to work and transfers the solution from the solution bottle to the spray bottle 100 until the liquid level sensor 120 signal shows that the liquid level returns to the normal range. The liquid level control accuracy of the liquid level sensor 120 is within ±1.5mm.

[0076] Example 5

[0077] Reference Figure 1 , Figure 4 , Figure 6 As shown, based on Example 4, it also includes an electrical control module 130 that is electrically connected to the first pump 200, the second pump 400, the two-position three-way valve A600, the two-position three-way valve B900, the liquid flow sensor 110 and the liquid level sensor 120.

[0078] In this embodiment, the start and stop control of the first pump 200 and the second pump 400, as well as the switching of the connection state of the two-position three-way valve A600 and the two-position three-way valve B900 are realized by the electrical control module 130. The liquid level sensor 120 and the liquid flow sensor 110 feed back the detected signals to the electrical control module 130, and accordingly, the electrical control module 130 can adjust the rotation speed of the first pump 200 and the second pump 400 to achieve precise control of the flow rate. Preferably, an adjustable speed peristaltic pump is selected as the first pump 200 and the second pump 400 to better control the flow rate.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An automatic liquid replacement structure, comprising a spray bottle (100), wherein the spray bottle (100) has a liquid inlet (101) and a liquid outlet (102), characterized in that: Also includes: A first pump (200), wherein an outlet of the first pump (200) is in communication with the liquid inlet (101); a solvent bottle (300), the solvent bottle (300) being in communication with an inlet of the first pump (200), the first pump (200) being used to pump the solvent in the solvent bottle (300) into the spray bottle (100); a second pump (400), wherein an inlet of the second pump (400) is in communication with the liquid discharge port (102); A waste liquid bottle (500), the waste liquid bottle (500) is connected to an outlet of the second pump (400), and the second pump (400) is used to pump the solution in the spray bottle (100) into the waste liquid bottle (500).

2. The automatic liquid replacement structure according to claim 1, characterized in that: Also includes: A two-position three-way valve A (600), wherein the inlet of the first pump (200) is connected to the solvent bottle (300) through the two-position three-way valve A (600); A cleaning liquid bottle (700), wherein the cleaning liquid bottle (700) is connected to an inlet of the first pump (200) via the two-position three-way valve A (600).

3. The automatic liquid replacement structure according to claim 1, characterized in that: Also includes: An air inlet pipe (801) is arranged in the spray bottle (100), and the air inlet pipe (801) passes through the spray bottle (100) and is connected to an air source; There are a plurality of nozzles (802) which are arranged at circumferential intervals on the air inlet pipe (801); the nozzles (802) are connected to the air inlet pipe (801); and the nozzles (802) are located inside the spray bottle (100) and close to the bottom.

4. The automatic liquid replacement structure according to claim 3, characterized in that: The air inlet pipe (801) is slidably disposed in the spray bottle (100), and further comprises: A first telescopic member (803) is arranged on the top of the spray bottle (100), the telescopic end of the first telescopic member (803) is connected to the air inlet pipe (801), and the first telescopic member (803) is used to drive the air inlet pipe (801) to slide; A quick-connect female connector (804) is arranged in the air inlet pipe (801); A quick-connect male connector (805) is disposed in the spray bottle (100) and is located at the bottom of the spray bottle (100); after the air inlet pipe (801) slides, the quick-connect female connector (804) is connected to or disconnected from the quick-connect male connector (805); An air jet pipe (806) is rotatably arranged on the quick-connect male head (805), the rotation axis of the air jet pipe (806) is coaxial with the quick-connect male head (805), the air jet pipe (806) has a plurality of through holes (8061), the plurality of through holes (8061) are connected to the quick-connect male head (805), and the air jet pipe (806) rotates after the plurality of through holes (8061) eject air; A scraper (807) is arranged on the air injection pipe (806), and the scraper (807) abuts against the inner wall of the spray bottle (100).

5. The automatic liquid replacement structure according to claim 4, characterized in that: The quick-connect female connector (804) is sealingly and slidably disposed in the air inlet pipe (801), and further comprises: a baffle (808) disposed on the quick-connect female head (804); after the quick-connect female head (804) is connected to the quick-connect male head (805), the quick-connect female head (804) slides and the baffle (808) closes the nozzle (802); An elastic member (809) has two ends respectively arranged on the quick-connect female head (804) and the air inlet pipe (801), and the elastic member (809) is used to provide a force for the quick-connect female head (804) to approach the quick-connect male head (805).

6. The automatic liquid replacement structure according to claim 2, characterized in that: Also includes: A two-position three-way valve B (900), wherein the second pump (400) is connected to the waste liquid bottle (500) and the solvent bottle (300) via the two-position three-way valve B (900).

7. The automatic liquid replacement structure according to claim 6, characterized in that: Also includes: A liquid flow sensor (110), wherein the two-position three-way valve B (900) is connected to the solvent bottle (300) via the liquid flow sensor (110).

8. The automatic liquid replacement structure according to claim 7, characterized in that: Also includes: A liquid level sensor (120) is arranged in the spray bottle (100), and the liquid level sensor (120) is used to detect the height of the liquid level in the spray bottle (100).

9. The automatic liquid replacement structure according to claim 8, characterized in that: Also includes: An electrical control module (130), the electrical control module (130) being electrically signal-connected to the first pump (200), the second pump (400), the two-position three-way valve A (600), the two-position three-way valve B (900), the liquid flow sensor (110), and the liquid level sensor (120).

10. The automatic liquid replacement structure according to claim 1, characterized in that: Also includes: A liquid inlet pipe (140) is arranged in the spray bottle (100); one end of the liquid inlet pipe (140) is connected to the liquid inlet (101), and the other end is located at the bottom of the spray bottle (100).

Images