CN112096616A

CN112096616A - Pump-filling-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency

Info

Publication number: CN112096616A
Application number: CN202011104392.8A
Authority: CN
Inventors: 李鹏; 卞全林; 张卫国
Original assignee: Huainan Jieti Electronic Technology Co ltd
Current assignee: Huainan Jieti Electronic Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2020-12-18

Abstract

The invention discloses a pump-filling-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency, which comprises an assembly box body and a function box body, wherein the function box body is fixedly arranged on the top surface of the assembly box body, a cleaning mechanism is arranged inside the assembly box body, the inner bottom wall of the assembly box body is fixedly communicated with a seamless water suction pipe, the inner bottom wall of the assembly box body is provided with a damping mechanism, the inner bottom wall of the assembly box body is fixedly provided with a water pipe filter cover, the top of the water pipe filter cover is communicated with a water outlet pipe in a penetrating manner, the side surface of the assembly box body is provided with an access hole, the same side surface of the access hole is provided with a drainage valve, and an overflow. The invention can automatically start the multistage centrifugal pump, has simple operation, short water pump starting time and higher reliability of automatic water pump starting and draining.

Description

Pump-filling-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency

Technical Field

The invention belongs to the field of intelligent drainage equipment of a centrifugal water pump of an underground water sump of a mine, relates to a drainage technology matched with a multistage centrifugal pump for a coal mine, and particularly relates to a pump-filling-free vacuum bottomless valve drainage device with high water diversion efficiency.

Background

In the existing mine underground sump drainage system, the adopted drainage equipment mainly comprises a centrifugal water pump, a motor, a starting control device, a sensor, an instrument, a pipeline and related accessories, and the centrifugal water pump is divided into a single stage and a multi-stage. The single-stage centrifugal pump has a low lift and is mainly used for local drainage of sections, well bottom water pits and the like, and the multi-stage centrifugal pump has a high lift and is mainly used for centralized drainage of a central pump room.

Chinese patent No. CN205806041U discloses a drainage device of a circulating water type multipurpose vacuum pump, which directly mounts a suction pipe in a conventional circulating water type multipurpose vacuum pump, when drainage is required, the suction pipe is directly taken down from a circulating insertion hole to drain water, when drainage is not required, the suction pipe is directly hung in the circulating insertion hole, and the other end of the suction pipe is connected to a back insertion hole of the circulating water type multipurpose vacuum pump; the problem that the conventional circulating water type multipurpose vacuum pump is not provided with a drainage device so that once drainage is completely distributed is solved; however, this device has the following drawbacks: 1. before the equipment is used, the water filling time of the water pumps is determined, the water filling time of each water pump is 3-5min under normal conditions, then the average air suction amount and the average vacuum degree of each vacuum pump are calculated, and finally the adaptive model is searched from the performance curve of the vacuum pump, so that the process is complicated; 2. before starting the water pump, the vacuum pump is started firstly, the electromagnetic valves in the pipe network are opened simultaneously to supply clean water to the vacuum pump, and if the reading of the vacuum meter does not meet certain requirements, the water pump cannot be started normally, so that the water pump cannot work normally.

Chinese patent No. CN201851157U discloses a pneumatic automatic drainage device for coal mines, which uses a jet pump as an air suction and water diversion device of a centrifugal pump to start up a water pump, can automatically and timely drain accumulated water in a water accumulation well, and has an explosion-proof function, thereby ensuring the safety of stopes and roadways; however, this device has the following drawbacks: the level of vacuum created by the jet nozzle is not only related to the size of the nozzle itself, but also to the pressure of the water within the nozzle. The larger the pressure is, the shorter the time required by the water pump to fill water is; the smaller the pressure is, the longer the water filling time is, and the vacuum degree can not meet the requirement of starting the pump because the water suction pipe of the water pump can not suck water even.

In summary, the prior art has the following defects: 1. the preparation time (namely vacuumizing) for starting the water pump is long; 2. because of the limitation of the vacuum pump and the jet pump, the reliability of automatic starting and stopping and water discharging of the water pump is poor, and 3, the vacuum degree of the water pump during automatic starting is difficult to grasp.

Disclosure of Invention

The invention aims to provide a pump-priming-free vacuum bottomless valve drainage device with high water diversion efficiency, which is used for solving the problems that the traditional water pump is long in preparation time for starting, the reliability of water drainage when the water pump is started and stopped is poor, and the vacuum degree of the water pump is difficult to master when the water pump is automatically started;

the technical problems to be solved by the invention are as follows:

(1) the preparation time for starting the water pump in the prior drainage technology is long;

(2) the reliability of automatic starting and stopping of the water pump for draining is poor;

(3) the vacuum degree of the water pump when automatically starting is difficult to grasp.

The purpose of the invention can be realized by the following technical scheme:

a pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency comprises an assembly box body and a function box body, wherein the function box body is fixedly installed on the top surface of the assembly box body, a cleaning mechanism is arranged inside the assembly box body, a seamless water suction pipe is fixedly communicated with the inner bottom wall of the assembly box body, the top of the seamless water suction pipe penetrates through the inner bottom wall of the function box body and extends to the inside of the function box body, an inclined opening is formed in the top end of the seamless water suction pipe, a damping mechanism is arranged on the inner bottom wall of the assembly box body, a water pipe filter cover is fixedly installed on the inner bottom wall of the assembly box body, a water outlet pipe is communicated with the top of the water pipe filter cover in a penetrating mode, one end, away from the water pipe filter cover, of the water outlet pipe penetrates through the inner side wall of the assembly box body and extends to the, the side surface of the assembly box body is provided with an access hole, the access hole is sealed with the side surface of the assembly box body through a flange door cover, the side surface of the assembly box body is provided with a drain valve, an overflow drain pipe is arranged between the assembly box body and the function box body, one end of the overflow drain pipe penetrates through the side surface of the assembly box body and extends to the outside of the assembly box body, the other end of the overflow drain pipe extends to the inside of the function box body, the top surface of the assembly box body is provided with two symmetrical water injection holes, a partition plate is fixedly arranged between the inner side walls of the function box body and divides the inner space of the function box body into a first inner cavity and a second inner cavity, the top of the seamless water suction pipe is positioned inside the first inner cavity of the function box body, the inner bottom wall of the second inner cavity is provided with an overflow hole, the inner bottom wall of the function box, the side of the function box body is provided with a through hole, and the inner top wall of the function box body is fixedly communicated with a sensor mounting hole and an exhaust hole.

Further, damper includes the sleeve, the inner diapire fixed connection of sleeve bottom through two supports and assembly box, seamless pipe that absorbs water is located telescopic inner circle, sleeve inside wall fixed mounting has evenly distributed's connecting block, the side fixed mounting that the connecting block is close to seamless pipe that absorbs water has the telescopic link, the one end fixed mounting that the connecting block was kept away from to the telescopic link has the snubber block, fixed mounting has damping spring between the side that snubber block and connecting block are close to mutually, the side that the connecting block was kept away from to the snubber block is the curved surface, the curved surface of snubber block contacts with the surface that seamless pipe that absorbs water.

Further, two mounting seats are fixedly mounted on the top surface of the assembly box body, and mounting holes are formed between two side surfaces of each mounting seat.

Furthermore, the end, located outside the assembly box, of the overflow drain pipe extends vertically downwards, the middle section, located inside the assembly box, of the overflow drain pipe is horizontally arranged, and the end, communicated with the functional box, of the overflow drain pipe extends vertically upwards.

Furthermore, the damping spring is sleeved on the outer surface of the telescopic rod, and a gap is reserved between the inner ring of the damping spring and the outer surface of the telescopic rod.

Further, clean mechanism includes driving motor, driving motor's side passes through the top surface fixed connection of motor cabinet and assembly box, driving motor output fixed mounting has first bull stick, the bottom of first bull stick passes through bearing and the interior diapire swing joint of assembly box, there is the second bull stick through bearing swing joint between the interior roof of assembly box and the interior diapire, the equal fixed mounting in surface of first bull stick and second bull stick has the commentaries on classics roller, two the transmission is connected with the cleaning belt between the surface of commentaries on classics roller, the surface of cleaning belt is equipped with evenly distributed's cleaning brush.

Furthermore, the top of two water injection holes is equipped with water injection valve and discharge valve respectively, the sensor mounting hole is provided with negative pressure sensor.

Further, a pump-filling-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency is used, and the using method of the device comprises the following steps:

the first step is as follows: before the multistage centrifugal pump is started, water is injected into the assembly box body through the water injection port, when the water injection height exceeds the overflow hole, water in the box body flows into the first inner cavity in the functional box body through the overflow port, and the water flowing into the first inner cavity flows out of the box body through the overflow drain pipe;

the second step is that: when water flows out from the overflow drain pipe, the water injection valve and the exhaust valve are closed, the multistage centrifugal pump can be started, after the multistage centrifugal pump is opened, the water in the box body is pumped out from the water outlet pipe due to the fact that the water injection valve and the exhaust valve are closed, a negative pressure state is formed in the box body, and after the pressure difference between the inside and the outside of the water tank reaches a certain value, the water in the water bin is automatically sucked into the box body through the seamless water suction pipe.

The invention has the beneficial effects that: the invention has the following beneficial effects:

1. the water injection valve for automatic exhaust can be installed through the two water injection holes, when water flows out of the overflow drain pipe, the multistage centrifugal pump can be started, the operation is simple, the starting time of the water pump is short, and the reliability of automatic starting and draining of the water pump is high;

2. the shock absorption effect can be provided for the seamless water absorption pipe through the arranged shock absorption mechanism, the shock generated by the seamless water absorption pipe during water absorption is reduced, and the seamless water absorption pipe is elastically clamped by the shock absorption block, the shock absorption spring and the telescopic rod, so that the stability of the equipment during operation is improved;

3. can clean the inside wall of assembly box through the clean mechanism that sets up, avoid the inner wall of assembly box to form the incrustation scale, drive first bull stick through driving motor and rotate, under the transmission in clean area, the second bull stick rotates along with first bull stick is synchronous, utilizes the clean brush on clean area surface to carry out the large tracts of land to assembly box inner wall clean, guarantees that the equipment inner wall is clean and tidy.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an assembly box and a functional box in embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1 in accordance with the present invention;

FIG. 6 is a cross-sectional view E-E of FIG. 1 of the present invention;

FIG. 7 is a cross-sectional view F-F of FIG. 1 of the present invention;

FIG. 8 is a sectional view showing the structure of an assembly case and a function case in embodiment 2 of the present invention;

FIG. 9 is a sectional top view showing the structure of a damper mechanism according to embodiment 2 of the invention;

FIG. 10 is a sectional view showing the structure of an assembly case and a function case in embodiment 3 of the invention;

FIG. 11 is a side sectional view showing the structure of a cleaning mechanism in embodiment 3 of the present invention;

fig. 12 is a bottom sectional view of the structure of the cleaning mechanism in embodiment 3 of the present invention.

In the figure: 1. a mounting seat; 2. a drain valve; 3. a seamless suction pipe; 4. a cleaning mechanism; 401. a drive motor; 402. a first rotating lever; 403. a second rotating rod; 404. rotating the roller; 405. a cleaning belt; 406. cleaning the brush; 5. a damping mechanism; 501. a sleeve; 502. connecting blocks; 503. a telescopic rod; 504. a damper block; 505. a damping spring; 6. an access hole; 7. a water pipe filter mantle; 8. a water outlet pipe; 9. a partition plate; 10. an overflow drain pipe; 11. a functional box body; 12. a sensor mounting hole; 13. an exhaust hole; 14. an overflow hole; 15. a through hole; 16. a water injection hole; 17. an assembly box body; 18. a filtering net cover; 25. a first lumen; 26. a second lumen.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-7, a pump-filling-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency comprises an assembly box body 17 and a function box body 11, wherein the function box body 11 is fixedly installed on the top surface of the assembly box body 17, the assembly box body 17 is installed on one side of a water inlet of a centrifugal water pump, two installation seats 1 are fixedly installed on the top surface of the assembly box body 17, an installation hole is formed between two side surfaces of each installation seat 1, a seamless water suction pipe 3 is fixedly communicated with the bottom wall of the assembly box body 17, the top of the seamless water suction pipe 3 penetrates through the inner bottom wall of the function box body 11 and extends to the inside of the function box body 11, an inclined opening is formed in the top end of the seamless water suction pipe 3, a water pipe filter cover 7 is fixedly installed on the inner bottom wall of the assembly box body 17, the top of the water pipe filter cover 7 is communicated with a water outlet pipe 8 in a penetrating manner, one end of the water outlet pipe, a gap is reserved between one end of the water outlet pipe 8, which is positioned inside the water pipe filtering cover 7, and the inner bottom wall of the assembly box body 17, the side surface of the assembly box body 17 is provided with an access hole 6, the access hole 6 is sealed with the side surface of the assembly box body 17 through a flange door cover, the same side surface of the access hole 6 is provided with a drain valve 2, an overflow drain pipe 10 is arranged between the assembly box body 17 and the function box body 11, one end of the overflow drain pipe 10 penetrates through the side surface of the assembly box body 17 and extends to the outside of the assembly box body 17, the other end of the overflow drain pipe 10 extends to the inside of the function box body 11, one end of the overflow drain pipe 10, which is positioned outside the assembly box body 17, vertically extends downwards to a water sump to be drained, the overflow drain pipe 10 is horizontally positioned in the middle section inside the assembly box body 17, and one end of the overflow drain pipe 10, the assembly box body 17 is characterized in that two symmetrical water injection holes 16 are formed in the top surface of the assembly box body 17, a water injection valve and an exhaust valve are respectively arranged at the tops of the two water injection holes 16, a partition plate 9 is fixedly installed between the inner side walls of the function box body 11, the partition plate 9 divides the inner space of the function box body 11 into a first inner cavity 25 and a second inner cavity 26, the top of the seamless water suction pipe 3 is located inside the first inner cavity 25 of the function box body 11, overflow holes 14 are formed in the inner bottom wall of the second inner cavity 26, a filter screen cover 18 is fixedly welded to the inner bottom wall of the function box body 11, the filter screen cover 18 is located under the overflow holes 14, through holes 15 are formed in the side surface of the function box body 11, and a sensor mounting hole 12 and an exhaust hole 13 are.

A pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency comprises the following steps:

the first step is as follows: before the multistage centrifugal pump is started, water is firstly injected into the assembly box body 17 through the water injection port, when the water injection height exceeds the overflow hole 14, the water in the box body flows into the first inner cavity 25 in the functional box body 11 through the overflow port, and the water flowing into the first inner cavity 25 flows out of the box body through the overflow drain pipe 10;

the second step is that: when water flows out from the overflow drain pipe 10, the water injection valve and the exhaust valve are closed, the multistage centrifugal pump can be started, after the multistage centrifugal pump is started, the water in the box body is pumped out from the water outlet pipe 8 by the multistage centrifugal pump due to the fact that the water injection valve and the exhaust valve are closed, a negative pressure state is formed in the box body, and after the pressure difference between the inside and the outside of the water tank reaches a certain value, the water in the water bin is automatically sucked into the box body through the seamless water suction pipe 3.

Example 2

As shown in fig. 8 to 9, the present embodiment is different from embodiment 1 in that: the damping mechanism 5 is arranged on the inner bottom wall of the assembly box 17, the damping mechanism 5 comprises a sleeve 501, the bottom of the sleeve 501 is fixedly connected with the inner bottom wall of the assembly box 17 through two supports, the seamless water suction pipe 3 is positioned at the inner ring of the sleeve 501, connecting blocks 502 which are uniformly distributed are fixedly arranged on the inner side wall of the sleeve 501, a telescopic rod 503 is fixedly arranged on the side surface of the connecting block 502 close to the seamless water suction pipe 3, a damping block 504 is fixedly arranged on one end of the telescopic rod 503 far away from the connecting block 502, a damping spring 505 is fixedly arranged between the damping block 504 and the side surface of the connecting block 502 close to each other, the damping spring 505 is sleeved on the outer surface of the telescopic rod 503, a gap is reserved between the inner ring of the damping spring 505 and the outer surface of the telescopic rod 503, the damping spring 505 is prevented from contacting with the, the side surface of the shock absorption block 504, which is far away from the connecting block 502, is an arc-shaped curved surface, and the arc-shaped curved surface of the shock absorption block 504 is in contact with the outer surface of the seamless suction pipe 3;

the four sides of the seamless suction pipe 3 can be elastically clamped by using the structures such as the damping block 504, the damping spring 505, the telescopic rod 503 and the like, the seamless suction pipe 3 is buffered, and the stability of the equipment during operation is improved.

Example 3

As shown in fig. 10 to 12, the present embodiment is different from embodiments 1 and 2 in that: the cleaning mechanism 4 is arranged inside the assembly box 17, the cleaning mechanism 4 comprises a driving motor 401, the side surface of the driving motor 401 is fixedly connected with the top surface of the assembly box 17 through a motor base, a first rotating rod 402 is fixedly installed at the output end of the driving motor 401, the bottom of the first rotating rod 402 is movably connected with the inner bottom wall of the assembly box 17 through a bearing, a second rotating rod 403 is movably connected between the inner top wall and the inner bottom wall of the assembly box 17 through a bearing, rotating rollers 404 are fixedly installed on the outer surfaces of the first rotating rod 402 and the second rotating rod 403, a cleaning belt 405 is connected between the outer surfaces of the two rotating rollers 404 in a transmission manner, and cleaning brushes 406 which are uniformly distributed are arranged on the outer surface of the cleaning belt 405;

the cleaning belt 405 is driven by the driving motor 401 to move between the two rollers 404, and the inner side wall of the assembly box 17 is cleaned by the cleaning brush 406 on the surface of the cleaning belt 405, so that the inner side wall of the assembly box 17 is prevented from generating scale.

A pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency comprises a water inlet, a water outlet, a water inlet hole, a water outlet hole, a water inlet pipe, a water outlet pipe, a water inlet valve, a water outlet pipe, a water inlet valve, a water outlet pipe, a water inlet pipe, a water outlet pipe;

the invention has the following beneficial effects:

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims

1. The utility model provides a pump-free vacuum-protection bottomless valve drainage device with high water diversion efficiency, includes assembly box (17) and function box (11), its characterized in that, function box (11) fixed mounting is at the top surface of assembly box (17), assembly box (17) inside is provided with clean mechanism (4), assembly box (17) bottom wall fixed intercommunication has seamless water absorption pipe (3), the inside bottom wall of function box (11) is passed and is extended to the inside of function box (11) is passed at the top of seamless water absorption pipe (3), the bevel connection has been seted up on the top of seamless water absorption pipe (3), assembly box (17) bottom wall is provided with damper (5), assembly box (17) bottom wall fixed mounting has water pipe filter mantle (7), water pipe filter mantle (7) top is run through the intercommunication and is had outlet pipe (8), the one end that outlet pipe (8) kept away from water pipe filter mantle (7) is passed the inside wall of box assembly (17) and is passed and is gone through The water outlet pipe is extended to the outside of the assembly box body (17), a gap is reserved between one end of the water outlet pipe (8) positioned inside the water pipe filtering cover (7) and the inner bottom wall of the assembly box body (17), an access hole (6) is formed in the side face of the assembly box body (17), the access hole (6) is sealed with the side face of the assembly box body (17) through a flange door cover, a drain valve (2) is arranged on the side face of the assembly box body (17), an overflow drain pipe (10) is arranged between the assembly box body (17) and the function box body (11), one end of the overflow drain pipe (10) penetrates through the side face of the assembly box body (17) and extends to the outside of the assembly box body (17), the other end of the overflow drain pipe (10) extends to the inside of the function box body (11), two symmetrical water injection holes (16) are formed in the top face of the assembly box body (17), and a partition plate (9) is, the utility model discloses a water purification device, including function box (11), baffle (9), seamless suction pipe (3), overflow hole (14) have been seted up to second inner chamber (26), the fixed welding of inner bottom wall of function box (11) has filtration screen panel (18), filtration screen panel (18) are located overflow hole (14) under, through-hole (15) have been seted up to the side of function box (11), the fixed intercommunication of roof has sensor mounting hole (12) and exhaust hole (13) in function box (11).

2. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 1, wherein the damping mechanism (5) comprises a sleeve (501), the bottom of the sleeve (501) is fixedly connected with the inner bottom wall of the assembly box (17) through two brackets, the seamless water suction pipe (3) is located at the inner ring of the sleeve (501), connecting blocks (502) which are uniformly distributed are fixedly installed on the inner side wall of the sleeve (501), an expansion link (503) is fixedly installed on the side surface of the connecting block (502) close to the seamless water suction pipe (3), a damping block (504) is fixedly installed at one end of the expansion link (503) far away from the connecting block (502), a damping spring (505) is fixedly installed between the side surfaces of the damping block (504) close to the connecting blocks (502), and the side surface of the damping block (504) far away from the connecting block (502) is an arc-shaped curved surface, the arc-shaped curved surface of the shock absorption block (504) is in contact with the outer surface of the seamless suction pipe (3).

3. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 1, wherein two installation bases (1) are fixedly installed on the top surface of the assembly box body (17), and an installation hole is formed between two side surfaces of each installation base (1).

4. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 1, wherein one end of the overflow drain pipe (10) located outside the assembly box (17) extends vertically downwards, one end of the overflow drain pipe (10) located inside the assembly box (17) is horizontally arranged, and one end of the overflow drain pipe (10) communicated with the functional box (11) extends vertically upwards.

5. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 2, wherein the damping spring (505) is sleeved on the outer surface of the telescopic rod (503), and a gap is reserved between the inner ring of the damping spring (505) and the outer surface of the telescopic rod (503).

6. The high priming efficiency vacuum bottomless valve drainage device without pump priming according to claim 1, it is characterized in that the cleaning mechanism (4) comprises a driving motor (401), the side surface of the driving motor (401) is fixedly connected with the top surface of the assembly box body (17) through a motor base, a first rotating rod (402) is fixedly installed at the output end of the driving motor (401), the bottom of the first rotating rod (402) is movably connected with the inner bottom wall of the assembly box body (17) through a bearing, a second rotating rod (403) is movably connected between the inner top wall and the inner bottom wall of the assembly box body (17) through a bearing, the outer surfaces of the first rotating rod (402) and the second rotating rod (403) are fixedly provided with rotating rollers (404), a cleaning belt (405) is connected between the outer surfaces of the two rotating rollers (404) in a transmission way, the outer surface of the cleaning belt (405) is provided with cleaning brushes (406) which are uniformly distributed.

7. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 1, wherein a water injection valve and an exhaust valve are respectively arranged at the tops of the two water injection holes (16), and the sensor mounting hole (12) is provided with a negative pressure sensor.

8. The pump-free vacuum-maintaining bottomless valve drainage device with high water diversion efficiency as claimed in claim 1, wherein the use method of the device comprises the following steps:

the first step is as follows: before the multistage centrifugal pump is started, water is filled into the assembly box body (17) through a water filling port, when the water filling height exceeds the overflow hole (14), water in the box body flows into the first inner cavity (25) in the functional box body (11) through the overflow port, and the water flowing into the first inner cavity (25) flows out of the box body through the overflow drain pipe (10);

the second step is that: when water flows out from the overflow drain pipe (10), the water injection valve and the exhaust valve are closed, the multistage centrifugal pump can be started, after the multistage centrifugal pump is started, the water in the box body is pumped out from the water outlet pipe (8) due to the fact that the water injection valve and the exhaust valve are closed, a negative pressure state is formed in the box body, and after the pressure difference inside and outside the water tank reaches a certain value, the water in the water bin is automatically sucked into the box body through the seamless water suction pipe (3).