Hydrogen peroxide coupled ozone sewage treatment device

Abstract

The invention relates to a hydrogen peroxide coupling ozone sewage treatment device which comprises a shell, a partition plate is fixedly installed in the shell, a treatment cavity and a working cavity are formed in the positions, on the two sides of the partition plate, in the shell respectively, and an acceleration mechanism for accelerating the decomposition speed of hydrogen peroxide is arranged at the top of the partition plate. A liquid spraying mechanism for feeding hydrogen peroxide is arranged at the top of the shell; the extending end of the air cylinder is controlled to extend to the longest, so that the first piston slides downwards to the position between the connecting pipe and the input end of the pump body, sewage enters the storage barrel along the water return pipe under the action of the pump body and then enters the pump body through the L-shaped pipe, the sewage carrying the catalyst is sprayed back into the treatment cavity through the pump body, and at the moment, due to the gravity action of an electric heating rod, the catalyst is discharged. The hydrogen peroxide enters the sewage, and the electric heating rod is started to heat the sewage, so that the decomposition speed of the hydrogen peroxide is accelerated, the sewage treatment efficiency is improved, and the influence of the residual hydrogen peroxide in the sewage on subsequent treatment or discharge is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a sewage treatment device coupling hydrogen peroxide and ozone. Background Art

[0002] A sewage treatment device coupling hydrogen peroxide and ozone is an efficient sewage treatment equipment. It combines the strong oxidation capabilities of ozone and hydrogen peroxide. By generating strong oxidants such as hydroxyl radicals, it can effectively degrade organic pollutants in sewage; under the synergistic effect of ozone, hydrogen peroxide can accelerate the generation of hydroxyl radicals and improve the oxidation efficiency. Hydrogen peroxide reacts with ozone in the form of anions to generate more hydroxyl radicals. When the sewage treatment device coupling hydrogen peroxide and ozone is working, the existing method of adding hydrogen peroxide is to add it all at once. In the initial stage of sewage treatment, due to the presence of more organic substances and impurities, these substances may catalyze the decomposition of hydrogen peroxide, causing the hydrogen peroxide to decompose too quickly and easily affecting the efficiency of sewage treatment; at the same time, in the later stage of sewage treatment, if the hydrogen peroxide is not completely decomposed, the residual hydrogen peroxide in the sewage will affect the subsequent treatment or discharge. Summary of the Invention

[0003] The technical problems solved by this solution are as follows: (1) How to solve the problem that in the later stage of sewage treatment, if the hydrogen peroxide is not completely decomposed, the residual hydrogen peroxide in the sewage will affect the subsequent treatment or discharge; (2) How to solve the problem that in the initial stage of sewage treatment, due to the presence of more organic substances and impurities, it will catalyze the rapid decomposition of hydrogen peroxide and easily affect the efficiency of sewage treatment.

[0004] The object of the present invention can be achieved through the following technical solutions: A sewage treatment device coupling hydrogen peroxide and ozone, including a housing. A longitudinally arranged partition is fixedly installed inside the housing. A treatment chamber and a working chamber are respectively arranged inside the housing on both sides of the partition, and an acceleration mechanism for accelerating the decomposition rate of hydrogen peroxide is arranged at the top of the partition. A liquid spraying mechanism for adding hydrogen peroxide is arranged at the top of the housing; The acceleration mechanism includes a support plate fixedly connected to the middle of the partition. A longitudinally arranged return water pipe is fixedly installed in the middle of the support plate. The input end of the return water pipe is located in the treatment chamber, and a filter screen is also fixedly installed at the input end of the return water pipe. A heating unit for increasing the temperature of the sewage is arranged above the return water pipe.

[0005] A further technical improvement of the present invention lies in that: A storage bucket for storing a catalyst is fixedly arranged at the top of the support plate. The bottom of the storage bucket is communicated with the middle of the return water pipe through a connecting pipe. A one-way valve is fixedly installed in the middle of the connecting pipe. The opening direction of the one-way valve is the same as the direction of the liquid in the return water pipe entering the storage bucket.

[0006] A further technical improvement of the present invention lies in that: a L-shaped pipe is fixedly communicated with the top of the storage bucket, one end of the L-shaped pipe is communicated with the top of the water return pipe, a pump body is fixedly arranged on the top of the partition board, the output end of the pump body faces the treatment cavity, the input end of the pump body is communicated with the middle part of the water return pipe, and the input end of the pump body is located between the L-shaped pipe and the connecting pipe.

[0007] A further technical improvement of the present invention lies in that: the heating unit includes a cylinder fixedly installed on the top of the outer shell, the cylinder is longitudinally arranged, the extending end of the cylinder movably penetrates through the water return pipe and is fixedly installed with a first piston, and a first shifting rod is also fixedly installed at the extending end of the cylinder.

[0008] A further technical improvement of the present invention lies in that: a guide ring is fixedly installed on the inner wall of the outer shell, a square rod is slidably sleeved in the guide ring, a second shifting rod is fixedly installed in the middle of the square rod, and an electric heating rod is fixedly installed at the bottom end of the square rod, and the electric heating rod is located directly above the treatment cavity.

[0009] A further technical improvement of the present invention lies in that: a turning frame is rotatably arranged on the inner wall of the outer shell on the side away from the square rod, the middle part of the turning frame is slidably connected with the first shifting rod, and one end of the turning frame is movably connected with the second shifting rod, and the first shifting rod is located below the turning frame; by controlling the extending end of the cylinder to extend to the longest, the first piston slides down between the connecting pipe and the input end of the pump body. Due to the action of the pump body, the sewage enters the storage bucket along the water return pipe after pushing open the one-way valve, and then enters the pump body through the L-shaped pipe, so that the sewage carrying the catalyst is sprayed back into the treatment cavity through the pump body. At this time, due to the gravity of the electric heating rod, it enters the sewage, and the electric heating rod is turned on to heat the sewage, thereby accelerating the decomposition rate of hydrogen peroxide, not only improving the efficiency of sewage treatment, but also avoiding the influence of the residual hydrogen peroxide in the sewage on subsequent treatment or discharge.

[0010] A further technical improvement of the present invention lies in that: the liquid spraying mechanism includes a liquid storage bucket fixedly arranged on the top of the outer shell, the liquid storage bucket is filled with a sufficient amount of hydrogen peroxide, a water blocking plate is fixedly installed in the middle of the inner wall of the liquid storage bucket, and a liquid outlet pipe is communicated with the bottom of the liquid storage bucket. A control valve is fixedly installed at the end of the liquid outlet pipe close to the distribution pipe, and a drain pipe is fixedly communicated with the middle part of the liquid outlet pipe.

[0011] A further technical improvement of the present invention lies in that: a longitudinally arranged adjusting pipe is fixedly installed on the top of the outer shell, a second piston is slidably arranged on the inner wall of the adjusting pipe, and the top end of the square rod movably penetrates through the adjusting pipe and is fixedly connected with the second piston.

[0012] A further technical improvement of the present invention lies in that: the top of the adjusting pipe is communicated with the liquid storage bucket through a liquid inlet pipe, the input end of the liquid inlet pipe is located above the water baffle, and the inner diameter of the output end of the liquid inlet pipe is smaller than the thickness of the second piston. The bottom of the side surface of the adjusting pipe is communicated with the input end of the liquid discharge pipe; during the downward movement of the electric heating rod, the second piston will be driven to slide below the input end of the liquid discharge pipe, so that the hydrogen peroxide above the water baffle enters the liquid outlet pipe along the liquid inlet pipe, the adjusting pipe and the liquid discharge pipe, and then is evenly sprayed into the treatment chamber through a plurality of nozzles. The above process avoids the rapid decomposition of hydrogen peroxide catalyzed by the organic matter and impurities contained therein at the initial stage of sewage treatment, preventing the influence on the efficiency of sewage treatment.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is in use, by controlling the extension end of the cylinder to extend to the longest, the first piston slides down to between the connecting pipe and the input end of the pump body. Due to the action of the pump body, the sewage enters the storage bucket after pushing open the one-way valve along the return pipe, and then enters the pump body through the L-shaped pipe, so that the sewage carrying the catalyst is sprayed back into the treatment chamber through the pump body. At this time, due to the gravity of the electric heating rod, it enters the sewage, and the electric heating rod is turned on to heat the sewage, thereby accelerating the decomposition rate of hydrogen peroxide, not only improving the efficiency of sewage treatment, but also avoiding the influence of the residual hydrogen peroxide in the sewage on subsequent treatment or discharge.

[0014] When the present invention is in use, during the downward movement of the electric heating rod, the second piston will be driven to slide below the input end of the liquid discharge pipe, so that the hydrogen peroxide above the water baffle enters the liquid outlet pipe along the liquid inlet pipe, the adjusting pipe and the liquid discharge pipe, and then is evenly sprayed into the treatment chamber through a plurality of nozzles. The above process avoids the rapid decomposition of hydrogen peroxide catalyzed by the organic matter and impurities contained therein at the initial stage of sewage treatment, preventing the influence on the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the acceleration mechanism structure of the present invention; Figure 4 It is a three-dimensional schematic diagram of the heating unit structure of the present invention; Figure 5 It is a schematic diagram of the liquid spraying mechanism structure of the present invention; Figure 6 It is a three-dimensional schematic diagram of the liquid spraying mechanism structure of the present invention.

[0017] In the figure: 1. Liquid spraying mechanism; 2. Driving motor; 3. Outer shell; 4. Acceleration mechanism; 5. Partition board; 6. Rotating shaft; 7. Sewage discharge pipe; 8. Sewage inlet pipe; 101. Liquid inlet pipe; 102. Second piston; 103. Adjusting pipe; 104. Liquid discharge pipe; 105. Distribution pipe; 106. Liquid outlet pipe; 107. Water baffle; 108. Liquid storage barrel; 109. Control valve; 110. Sprinkler head; 401. Flipping frame; 402. Cylinder; 403. First piston; 404. L-shaped pipe; 405. Material storage barrel; 406. Support plate; 407. Connecting pipe; 408. Water return pipe; 409. Electric heating rod; 410. Pump body; 411. Square rod; 412. First lever; 413. Guide ring; 414. Second lever. Specific embodiments

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1-6 As shown, a hydrogen peroxide coupled ozone sewage treatment device includes an outer shell 3. A longitudinally arranged partition board 5 is fixedly installed inside the outer shell 3. A treatment chamber and a working chamber are respectively arranged in the outer shell 3 on both sides of the partition board 5. And an acceleration mechanism 4 for accelerating the decomposition rate of hydrogen peroxide is arranged at the top of the partition board 5. A liquid spraying mechanism 1 for injecting hydrogen peroxide is arranged at the top of the outer shell 3.

[0020] Please refer to Figure 2 and Figure 3 As shown, the above-mentioned acceleration mechanism 4 includes a support plate 406 fixedly connected to the middle of the partition board 5. A longitudinally arranged water return pipe 408 is fixedly installed in the middle of the support plate 406. The input end of the water return pipe 408 is located in the treatment chamber, and a filter screen is also fixedly installed at the input end of the water return pipe 408. A heating unit for increasing the temperature of the sewage is arranged above the water return pipe 408.

[0021] Please refer to Figure 3 As shown, a material storage barrel 405 for storing a catalyst is fixedly arranged at the top of the above-mentioned support plate 406. The bottom of the material storage barrel 405 is communicated with the middle of the water return pipe 408 through a connecting pipe 407. A one-way valve is fixedly installed in the middle of the connecting pipe 407. The opening direction of the one-way valve is the same as the direction of the liquid in the water return pipe 408 entering the material storage barrel 405.

[0022] Please refer to Figure 3As shown, a L-shaped pipe 404 is fixedly connected to the top of the above-mentioned storage bucket 405. One end of the L-shaped pipe 404 is connected to the top of the return water pipe 408. A pump body 410 is fixedly arranged at the top of the partition plate 5. The output end of the pump body 410 faces the treatment chamber. The input end of the pump body 410 is connected to the middle of the return water pipe 408, and the input end of the pump body 410 is located between the L-shaped pipe 404 and the connecting pipe 407.

[0023] Please refer to Figure 3 and Figure 4 As shown, the above-mentioned heating unit includes a cylinder 402 fixedly installed on the top of the outer shell 3. The cylinder 402 is longitudinally arranged. The extending end of the cylinder 402 movably penetrates through the return water pipe 408 and is fixedly installed with a first piston 403, and a first shift lever 412 is also fixedly installed at the extending end of the cylinder 402.

[0024] Please refer to Figure 3 and Figure 4 As shown, a guide ring 413 is fixedly installed on the inner wall of the above-mentioned outer shell 3. A square rod 411 is slidably sleeved in the guide ring 413. A second shift lever 414 is fixedly installed in the middle of the square rod 411, and an electric heating rod 409 is fixedly installed at the bottom end of the square rod 411. The electric heating rod 409 is located directly above the treatment chamber.

[0025] Please refer to Figure 2 and Figure 4 As shown, a turning frame 401 is rotatably arranged on the inner wall of the outer shell 3 on the side of the cylinder 402 away from the square rod 411. The middle of the turning frame 401 is slidably connected to the first shift lever 412, and one end of the turning frame 401 is movably connected to the second shift lever 414. The first shift lever 412 is located below the turning frame 401; by controlling the extending end of the cylinder 402 to extend to the longest, the first piston 403 slides down between the connecting pipe 407 and the input end of the pump body 410. Due to the action of the pump body 410, the sewage flows along the return water pipe 408 to open the one-way valve and then enters the storage bucket 405, and then enters the pump body 410 through the L-shaped pipe 404, so that the sewage carrying the catalyst is sprayed back into the treatment chamber through the pump body 410. At this time, due to the gravity of the electric heating rod 409, it enters the sewage. The electric heating rod 409 is turned on to heat the sewage, thereby accelerating the decomposition rate of hydrogen peroxide, not only improving the efficiency of sewage treatment, but also avoiding the influence of the residual hydrogen peroxide in the sewage on subsequent treatment or discharge.

[0026] Please refer to Figure 2 and Figure 5As shown in the figure, the above-mentioned liquid spraying mechanism 1 includes a liquid storage bucket 108 fixedly arranged on the top of the outer shell 3. The liquid storage bucket 108 is filled with a sufficient amount of hydrogen peroxide. A water baffle 107 is fixedly installed in the middle of the inner wall of the liquid storage bucket 108. The bottom of the liquid storage bucket 108 is communicated with a liquid outlet pipe 106. A control valve 109 is fixedly installed at the end of the liquid outlet pipe 106 close to the distribution pipe 105. A drain pipe 104 is fixedly communicated with the middle of the liquid outlet pipe 106.

[0027] Please refer to Figure 5 As shown in the figure, the output end of the above-mentioned liquid outlet pipe 106 is communicated with a horizontally arranged distribution pipe 105. A plurality of spray heads 110 are communicated with the bottom of the distribution pipe 105.

[0028] Please refer to Figure 5 and Figure 6 As shown in the figure, a longitudinally arranged adjusting pipe 103 is fixedly installed on the top of the above-mentioned outer shell 3. A second piston 102 is slidably arranged in the inner wall of the adjusting pipe 103. The top end of the square rod 411 movably penetrates through the adjusting pipe 103 and is fixedly connected with the second piston 102.

[0029] Please refer to Figure 5 and Figure 6 As shown in the figure, the top of the above-mentioned adjusting pipe 103 is communicated with the liquid storage bucket 108 through a liquid inlet pipe 101. The input end of the liquid inlet pipe 101 is located above the water baffle 107. The inner diameter of the output end of the liquid inlet pipe 101 is smaller than the thickness of the second piston 102. The bottom of the side of the adjusting pipe 103 is communicated with the input end of the drain pipe 104; during the downward movement of the electric heating rod 409, the second piston 102 will be driven to slide below the input end of the drain pipe 104, so that the hydrogen peroxide above the water baffle 107 will enter the liquid outlet pipe 106 along the liquid inlet pipe 101, the adjusting pipe 103 and the drain pipe 104, and then be evenly sprayed into the treatment chamber through a plurality of spray heads 110. The above process avoids the rapid decomposition of hydrogen peroxide catalyzed by organic substances and impurities contained therein at the initial stage of sewage treatment, preventing the influence on the efficiency of treating sewage by adding hydrogen peroxide in stages.

[0030] Please refer to Figure 2 As shown in the figure, a rotating shaft 6 is rotatably arranged in the middle of the above-mentioned partition plate 5. One end of the rotating shaft 6 is rotatably connected with the inner wall of the outer shell 3. A driving motor 2 is fixedly installed on the outer wall of the outer shell 3. The other end of the rotating shaft 6 movably penetrates through the outer shell 3 and is fixedly connected with the output end of the driving motor 2.

[0031] Please refer to Figure 2 As shown in the figure, a plurality of stirring paddles are fixedly installed at the end of the rotating shaft 6 far from the driving motor 2. An ozone generator is arranged below the plurality of stirring paddles. The ozone generator is a prior art.

[0032] Please refer to Figure 2As shown, a sewage inlet pipe 8 communicates with the middle part of the side of the above-mentioned outer shell 3 away from the drive motor 2, and a sewage discharge pipe 7 communicates with the outer wall of the outer shell 3 below the sewage inlet pipe 8.

[0033] Working principle: When the present invention is in use, first, as Figure 2 and Figure 3 shown, a certain amount of sewage is injected into the treatment chamber in the outer shell 3 through the sewage inlet pipe 8, and the liquid level of the sewage submerges the input end of the return water pipe 408. As Figure 5 shown, the control valve 109 is opened, so that hydrogen peroxide below the water baffle 107 is injected into the distribution pipe 105 through the liquid outlet pipe 106, and then evenly sprayed in the treatment chamber through a number of spray heads 110. Then, the ozone generator, the drive motor 2 and the pump body 410 are turned on in sequence. At this time, as Figure 2 and Figure 3 shown, the extending end of the cylinder 402 is in the shortest state, and the first piston 403 is located between the L-shaped pipe 404 and the input end of the pump body 410. The drive motor 2 drives a number of stirring paddles to rotate, stirring the sewage in the treatment chamber. At the same time, the sewage is sucked into the pump body 410 through the return water pipe 408, and then sprayed back into the treatment chamber through the output end of the pump body 410. In this process, it plays a role in accelerating the uniform mixing of hydrogen peroxide in the sewage; as Figures 2-4 shown, in the later stage of sewage treatment, the extending end of the cylinder 402 is controlled to extend to the longest, so that the first piston 403 slides down to between the connecting pipe 407 and the input end of the pump body 410. Due to the action of the pump body 410, the sewage pushes open the one-way valve along the return water pipe 408 and enters the storage bucket 405, and then enters the pump body 410 through the L-shaped pipe 404, so that the sewage carrying the catalyst is sprayed back into the treatment chamber through the pump body 410. At this time, due to the gravity of the electric heating rod 409, it enters the sewage. The electric heating rod 409 is turned on to heat the sewage, thereby accelerating the decomposition rate of hydrogen peroxide, not only improving the efficiency of sewage treatment, but also avoiding the influence of the residual hydrogen peroxide in the sewage on subsequent treatment or discharge; as Figure 3 and Figure 5 shown, during the downward movement of the electric heating rod 409, it will drive the second piston 102 to slide to below the input end of the drain pipe 104, so that the hydrogen peroxide above the water baffle 107 enters the liquid outlet pipe 106 along the liquid inlet pipe 101, the regulating pipe 103 and the drain pipe 104, and then is evenly sprayed in the treatment chamber through a number of spray heads 110. The above process puts hydrogen peroxide in a staged manner, avoiding the too-fast decomposition of hydrogen peroxide catalyzed by the organic matter and impurities contained therein in the initial stage of sewage treatment, and preventing the influence on the efficiency of sewage treatment.

[0034] The above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A hydrogen peroxide-coupled ozone sewage treatment device, comprising a housing (3), wherein a partition (5) is fixedly installed inside the housing (3), characterized in that: A processing chamber and a working chamber are respectively arranged in the shell (3) on both sides of the partition (5), and an acceleration mechanism (4) for accelerating the decomposition speed of hydrogen peroxide is arranged on the top of the partition (5), and a liquid spraying mechanism (1) for injecting hydrogen peroxide is arranged on the top of the shell (3); The acceleration mechanism (4) comprises a support plate (406) fixedly connected to the middle of the partition plate (5); a return pipe (408) is fixedly installed in the middle of the support plate (406); an input end of the return pipe (408) is located in the treatment chamber; a filter screen is also fixedly installed at the input end of the return pipe (408); and a heating unit for increasing the temperature of sewage is arranged above the return pipe (408).

2. A hydrogen peroxide coupled ozone sewage treatment device according to claim 1, characterized in that: A material storage barrel (405) is fixedly provided on the top of the support plate (406), and the bottom of the material storage barrel (405) is connected to the middle of the return pipe (408) through a connecting pipe (407), and a one-way valve is fixedly installed in the middle of the connecting pipe (407).

3. A hydrogen peroxide coupled ozone sewage treatment device according to claim 2, characterized in that: The top of the material storage barrel (405) is fixedly connected to an L-shaped tube (404), one end of which is connected to the top of a return pipe (408), and a pump body (410) is fixedly provided on the top of the partition plate (5), the input end of the pump body (410) is connected to the middle of the return pipe (408), and the input end of the pump body (410) is located between the L-shaped tube (404) and the connecting tube (407).

4. A hydrogen peroxide coupled ozone sewage treatment device according to claim 1, characterized in that: The heating unit comprises a cylinder (402) fixedly mounted on the top of the housing (3); the extended end of the cylinder (402) movably penetrates the water return pipe (408) and is fixedly mounted with a first piston (403); and the extended end of the cylinder (402) is also fixedly mounted with a first lever (412).

5. A hydrogen peroxide coupled ozone sewage treatment device according to claim 1, characterized in that: A guide ring (413) is fixedly mounted on the inner wall of the housing (3); a square rod (411) is slidably sleeved inside the guide ring (413); a second lever (414) is fixedly mounted in the middle of the square rod (411); and an electric heating rod (409) is fixedly mounted at the bottom end of the square rod (411).

6. A hydrogen peroxide coupled ozone sewage treatment device according to claim 4, characterized in that: A turning frame (401) is rotatably arranged on the inner wall of the outer shell (3) on the side of the cylinder (402) away from the square rod (411); the middle part of the turning frame (401) is slidably connected to the first lever (412); one end of the turning frame (401) is movably connected to the second lever (414); the first lever (412) is located below the turning frame (401).

7. A hydrogen peroxide coupled ozone sewage treatment device according to claim 1, characterized in that: The liquid spraying mechanism (1) comprises a liquid storage barrel (108) fixedly arranged on the top of the outer shell (3), a water baffle (107) fixedly installed in the middle of the inner wall of the liquid storage barrel (108), and a liquid outlet pipe (106) is connected to the bottom of the liquid storage barrel (108), a control valve (109) is fixedly installed at the end of the liquid outlet pipe (106) close to the distribution pipe (105), and a discharge pipe (104) is fixedly connected to the middle of the liquid outlet pipe (106).

8. A hydrogen peroxide coupled ozone sewage treatment device according to claim 5, characterized in that: An adjusting tube (103) is fixedly mounted on the top of the housing (3), a second piston (102) is slidably disposed on the inner wall of the adjusting tube (103), and the top end of the square rod (411) movably penetrates the adjusting tube (103) and is fixedly connected to the second piston (102).

9. A hydrogen peroxide coupled ozone sewage treatment device according to claim 8, characterized in that: The top of the regulating tube (103) is connected to the liquid storage barrel (108) via the liquid inlet tube (101); the input end of the liquid inlet tube (101) is located above the water baffle (107); the inner diameter of the output end of the liquid inlet tube (101) is smaller than the thickness of the second piston (102); and the bottom of the side of the regulating tube (103) is connected to the input end of the liquid discharge tube (104).

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