CN111569535A - But accurate control's dewatering jar - Google Patents

Abstract

The invention relates to the technical field of separators and discloses a precisely-controllable dewatering tank which comprises an outer cylinder and an inner cylinder, wherein the periphery of the inner cylinder is axially connected with a spirally-arranged spiral plate, the lower part of the outer cylinder is provided with a liquid drainage unit for draining liquid, the top end of the outer cylinder is communicated with an exhaust pipe, one side of the outer cylinder is communicated with an air inlet pipe, the bottom of the inner cylinder is an open end, the inner cylinder is communicated with the exhaust pipe, a gas-liquid partition plate is fixedly connected inside the outer cylinder and positioned at the lower part of the outer cylinder, the outer cylinder is divided into an upper chamber and a lower chamber by the gas-liquid partition plate, the upper chamber is communicated with a first communicating pipe, the lower chamber is communicated with a second communicating pipe, a communicating valve is arranged between the first communicating pipe and the second communicating pipe, and the. The invention is used for drying gas in a vacuum system, and can discharge liquid while separating gas and liquid, thereby improving the working efficiency.

Description

But accurate control's dewatering jar

Technical Field

The invention relates to the technical field of gas-liquid separators, in particular to a water removal tank capable of being accurately controlled.

Background

Before compressed gas or before adopting the vacuum pump, the gaseous debris such as a large amount of moisture or dust that contain in the front end equipment spreads need earlier to clear away vacuum system's steam and liquid, and dry gas avoids a large amount of moisture and dust to enter into the vacuum pump after influence the life of vacuum pump to the safety and stability who protects the vacuum pump moves.

In order to solve the above technical problems, a gas-liquid separating device has been proposed in the prior art, and two tanks are generally required in the gas-liquid separating device in the prior art, one tank is used for collecting liquid, and the other tank is used for discharging liquid, so that the structure of the device will certainly increase the installation volume of the whole device, and the cost is higher.

In order to reduce the installation volume and save the cost, a gas-liquid separating device is also provided in the prior art, the purpose of collecting liquid and discharging liquid can be achieved only in one device, for example, a patent with the publication number of CN204208383U discloses a cyclone dust removal steam-water separator, which comprises a separating cylinder, a sleeve, a steam inlet, a steam outlet, a top plate, a cyclone reversing pipe, an air inlet reversing baffle, an air outlet reversing baffle, a spiral flow deflector, a liquid guide pipe, a liquid separating plate, a filter screen, a liquid collecting filter and an automatic water drain valve, wherein the steam inlet and the steam outlet are connected on a steam supply pipeline through flanges and can also be adjusted through a reducing flange to be connected with steam supply pipelines with different diameters, the spiral flow deflector is tangentially connected with the middle cyclone reversing pipe, so that the steam enters the separating cylinder and then spirally advances to generate larger centrifugal force, the water phase and the solid particles can flow downwards along the inner wall of the separation cylinder, a liquid guide pipe is arranged at the steam outlet, water is guided to the liquid separation plate after secondary condensation, an automatic water drain valve is arranged below the liquid separation plate, and when the water flowing downwards reaches a certain amount, the water is automatically opened to drain.

Although the liquid is discharged and the collected liquid is carried out in the same separating cylinder, the installation volume can be reduced, and the water can be discharged only by opening the automatic water drain valve, but because the separating cylinder is in a vacuum state in the patent, the liquid drops generated by separation flow to the automatic water drain valve through the filtering device and then are discharged, when the liquid drops are discharged, the liquid drops cannot be normally discharged under the vacuum environment, the atmosphere in the separating cylinder needs to be ensured when the liquid is discharged, the liquid can be smoothly discharged, the equipment needs to be stopped, the gas and the liquid can be temporarily separated in the separating cylinder, the gas and the liquid can not be simultaneously separated and the gas and liquid can not be discharged, and the whole working efficiency is greatly reduced by the mode.

Disclosure of Invention

The invention provides a water removal tank capable of being accurately controlled, and aims to separate gas and liquid and discharge liquid at the same time, so that the working efficiency is improved.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a but accurate control's dewatering jar, includes urceolus and inner tube, the inner tube periphery has the spiral plate of spiral setting along its axial connection, the urceolus lower part is equipped with the flowing back unit that is used for the flowing back, the top intercommunication of urceolus has the blast pipe, one side intercommunication of urceolus has the intake pipe, the inner tube bottom is the opening end, the inner tube with the blast pipe intercommunication, the inside fixedly connected with gas-liquid baffle of urceolus, gas-liquid baffle is located the urceolus lower part, gas-liquid baffle will chamber and cavity down are separated into to the urceolus, it has first communicating pipe to go up the chamber intercommunication, the cavity intercommunication has second communicating pipe down, be equipped with the UNICOM valve between first communicating pipe and the second communicating pipe, the cavity is.

The principle and the advantages of the scheme are as follows: in practical application, the outer cylinder is divided into an upper chamber and a lower chamber by the gas-liquid partition plate, the upper chamber is used for collecting liquid, the lower chamber is used for discharging liquid, after the liquid is collected, the liquid can be smoothly discharged only by ensuring that the lower chamber is communicated with atmosphere, if the lower chamber is vacuum, the liquid can not normally drip, the liquid in the lower chamber can not be normally discharged, however, because the outer cylinder is divided into the upper chamber and the lower chamber which are mutually independent by the gas-liquid partition plate in the technical scheme, when the liquid needs to be discharged, the lower chamber is in an atmospheric pressure state only by opening the vent valve to break vacuum, so that the liquid can be smoothly discharged, at the moment, the first communicating pipe and the second communicating pipe are closed by the communicating valve, so that the upper chamber can still normally collect the liquid, the arrangement in the technical scheme can effectively improve the working efficiency, the liquid can be collected while the liquid is discharged.

The intercommunication valve among this technical scheme can control and realize the intercommunication and the closing of upper plenum and lower chamber to the realization makes liquid can be followed lower chamber and is discharged in flowing into the lower chamber with the liquid in the upper plenum in the realization.

Preferably, as an improvement, the gas-liquid separation plate is disposed obliquely.

So set up, the slope of gas-liquid baffle sets up, can make the liquid velocity of flow of drippage become fast, and can avoid the liquid to pile up and lead to the defect that can not arrange to the greatest extent.

Preferably, as an improvement, a first liquid level meter is communicated between the first communication pipe and the upper chamber.

So set up, first level gauge can show the liquid and collect the condition, and the convenient moisture volume to the dewatering jar is observed, and then the discharge of moisture is controlled to the break-make of the control UNICOM valve of being convenient for.

Preferably, as an improvement, the flowing back unit includes that the blowdown is taken over and the blowoff valve, the blowdown is taken over and is linked together with the blowoff valve, the blowdown take over one end with lower chamber bottom intercommunication.

In this technical scheme, just can be with the liquid of collecting in the urceolus from blowdown takeover by the discharge through opening the blowoff valve, and drainage unit simple structure among this technical scheme, easy operation.

Preferably, as an improvement, a second liquid level meter is communicated between the sewage discharge connecting pipe and the lower chamber.

So set up, the liquid discharge condition in the cavity under can audio-visually observation of second level gauge, is convenient for control blowoff valve to close or the blowdown of UNICOM is taken over.

Preferably, as an improvement, an air pipe is further communicated between the upper chamber and the lower chamber, and a buffer valve is arranged on the air pipe.

So set up, the quick broken vacuum of cavity down can be realized in the setting of atmospheric valve, the discharge of the liquid of being convenient for, and tracheal setting can be with last cavity and cavity intercommunication down, after discharging liquid, can make last cavity and cavity intercommunication down each other through opening the buffer valve, the pressure balance of cavity and cavity down is gone up in the messenger, it merges vacuum system and leads to the great condition of vacuum fluctuation to avoid cavity discharge liquid back down by atmospheric condition, thereby effectual vacuum pressure stability who improves vacuum system, prevent because the potential safety hazard that the vacuum fluctuation caused.

Preferably, as an improvement, a fixed plate is fixedly connected in the inner barrel, a plurality of air guide tubes are arranged on the fixed plate, a plurality of air guide holes are formed in the side walls of the air guide tubes, through holes are formed in the bottom walls of the air guide tubes, and the top ends of the air guide tubes are communicated with the exhaust pipe.

Among this technical scheme, through setting up the air duct in the inner tube, and a plurality of air guide holes have been seted up on the lateral wall of air duct, so set up, can make from the gaseous rising of spiral plate outflow and get into the inner tube after, air guide hole from the inner tube lateral wall gets into in the air duct, make gaseous air current revolve to change once more like this, make gaseous from the inner tube direct upflow change into the side direction flow, make gaseous can and the air duct lateral wall between produce the collision, can separate the gas-liquid once more like this, make the water content in the gas still less, thereby it is better to gaseous drying effect.

Preferably, as an improvement, the air inlet pipe and the exhaust pipe are vertically arranged, the air inlet pipe is located at the upper part of the outer cylinder, and the air inlet pipe is located above the spiral plate.

The intake pipe is located the spiral plate top and can prolongs the gaseous runner that gets into the urceolus from the intake pipe, and the runner is longer, and is better abundant to the separation effect of gas and liquid, and the separation effect is better, and intake pipe and blast pipe set up perpendicularly among this technical scheme, and the intake pipe arranges for the level like this, and the comdenstion water that the comdenstion water was whole to get into jar body and shut down in the back pipeline when being convenient for admit air flows back.

Preferably, as an improvement, the top fixedly connected with baffle of spiral plate, the intake pipe is located the both sides of baffle, the both sides of baffle respectively with inner tube and urceolus fixed connection, the baffle with the contained angle has between the intake pipe.

So set up, the baffle plays the effect of separation, and has the effect of guide air current, makes in the air current can get into the helical coiled passage that forms between spiral board, urceolus and the inner tube smoothly, makes the gas that gets into from the intake pipe can flow along the spiral board.

Preferably, as an improvement, a first access hole and a second access hole are formed in the side wall of the outer barrel, the first access hole is communicated with the upper chamber, and the second access hole is communicated with the lower chamber.

So set up, first access hole is convenient for clear up the interior waste residue of epicoele, and is convenient for maintain the upper chamber, and the setting of second access hole is convenient for wash the interior waste residue of cavity down, and is convenient for maintain the cavity down.

Drawings

FIG. 1 is a perspective view of a first embodiment of a precisely controllable dehydration tank of the present invention.

FIG. 2 is a front view of a first embodiment of a precisely controllable de-watering can.

Fig. 3 is a sectional view taken along the line a-a in fig. 2.

FIG. 4 is a top view of a first embodiment of a precisely controlled dehydration tank of the present invention.

Fig. 5 is a rotary sectional view taken along the direction C-C in fig. 4.

Fig. 6 is a sectional view taken along line B-B in fig. 2.

FIG. 7 is a front view of a second embodiment of a precisely controlled dehydration tank of the present invention.

Fig. 8 is a cross-sectional view taken along line D-D of fig. 7.

Fig. 9 is a sectional view taken along line E-E in fig. 7.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a sewage discharging connecting pipe 1, a support 2, a lower end enclosure 3, an outer cylinder 4, a first communicating pipe 5, a second communicating pipe 6, a first access hole 7, an electric control mounting plate 8, an electric control cabinet 801, an air inlet pipe 9, an upper end enclosure 10, an exhaust pipe 11, an inner cylinder 12, a baffle 13, a spiral plate 14, a gas-liquid partition plate 15, a fixing plate 16, an air duct 17, an air guide hole 18, a second access hole 19, a first air hole 20, a second air hole 21, a communicating valve 22, a first liquid level meter 23, a second liquid level meter 24, a sewage discharging valve 25, an air pipe 26, a buffer valve 27 and a vent valve 28.

Example one

The embodiment is substantially as shown in figures 1, 2 and 3 of the accompanying drawings: the utility model provides a can accurate control remove water jar, includes urceolus 4 and inner tube 12, and urceolus 4 and inner tube 12 all are cylindricly, and both inside are hollow structure. An upper end socket 10 is welded and fixed at the upper end of the outer barrel 4, a lower end socket 3 is welded and fixed at the lower end of the outer barrel 4, any longitudinal section of the upper end socket 10 and any longitudinal section of the lower end socket 3 are arc-shaped, the upper end socket 10 and the lower end socket 3 are both communicated with the outer barrel 4, four supports 2 are welded and fixed at the bottom of the lower end socket 3 in the embodiment, and the four supports 2 support the whole dewatering separation tank.

As shown in figure 1, the upper part of the outer cylinder 4 is fixedly connected with an electric control mounting plate 8 through bolts, an electric control box 801 is mounted on the electric control mounting plate 8, the electric control box 801 belongs to an electric assembly of the dewatering tank, has the functions of starting, stopping, emergency stopping and the like, comprises an operation display lamp, a start-stop button, a simple PLC integrated machine, a gas switch, a power supply conversion and other electric elements, and realizes editable full-automatic control of the running state of the dewatering tank.

Referring to fig. 3, the inner cylinder 12 and the outer cylinder 4 are coaxially arranged, a spiral plate 14 which is spirally arranged is welded and fixed on the outer periphery of the inner cylinder 12 along the axial direction, the outer side of the spiral plate 14 is welded and fixed on the inner wall part of the outer cylinder 4, the relative sealing effect between the spiral plate 14 and the outer cylinder 4 is realized, namely, no gap is formed between the spiral plate 14 and the outer cylinder 4, and a spiral channel is formed among the spiral plate 14, the inner cylinder 12 and the outer cylinder 4.

The lower part of the outer cylinder 4 is provided with a liquid discharge unit for discharging liquid, the top end of the outer cylinder 4 is communicated with an exhaust pipe 11, in the embodiment, the exhaust pipe 11 is welded and fixed with an upper end enclosure 10, the top end of the inner cylinder 12 is welded and fixed with the upper end enclosure 10, the top end of the inner cylinder 12 is communicated with the exhaust pipe 11, and the bottom end of the inner cylinder 12 is an open end. As shown in fig. 2, the right side of the outer tub 4 is communicated with an intake pipe 9, and the axis of the intake pipe 9 and the axis of the exhaust pipe 11 are perpendicular to each other, so that the intake pipe 9 and the exhaust pipe 11 are in a perpendicular state, and as shown in fig. 4 and 5, the intake pipe 9 is located at the upper portion of the outer tub 4, and the intake pipe 9 is located above the spiral plate 14.

As shown in fig. 3, a baffle 13 is welded and fixed to the top of the spiral plate 14, one side of the baffle 13 is welded and fixed to the inner cylinder 12, and the other side of the baffle 13 is welded and fixed to the inner side wall of the outer cylinder 4, as shown in fig. 6, an included angle is formed between the baffle 13 and the air inlet pipe 9, specifically, in this embodiment, the included angle between the baffle 13 and the axis of the air inlet pipe 9 is 60 °, under the action of the baffle 13, the airflow entering the outer cylinder 4 from the air inlet pipe 9 flows along a spiral channel formed between the spiral plate 14, the inner cylinder 12 and the outer cylinder 4, and the baffle 13 plays a role in guiding the airflow to smoothly enter the spiral channel.

As shown in fig. 3, a gas-liquid partition 15 is welded and fixed inside the outer cylinder 4, the gas-liquid partition 15 is in a circular plate-shaped structure, the gas-liquid partition 15 is obliquely arranged, no gap is formed between the gas-liquid partition 15 and the outer cylinder 4, the outer cylinder 4 is divided into an upper chamber and a lower chamber which are independent of each other by the gas-liquid partition 15, the gas-liquid partition 15 is located at the lower part of the outer cylinder 4, and the inner cylinder 12 is located above the gas-liquid partition 15, so that the inner cylinder 12.

As shown in fig. 2, the upper chamber is communicated with a first communicating pipe 5, the lower chamber is communicated with a second communicating pipe 6, and as shown in fig. 1, a communicating valve 22 is connected between the first communicating pipe 5 and the second communicating pipe 6 through a flange, the communicating valve 22 in this embodiment is a normally open pneumatic ball valve, so that the upper chamber and the lower chamber can be communicated and closed, and compressed gas of 0.2-0.8MPa is required as a gas source.

As shown in fig. 2, the first communicating pipe 5 and the second communicating pipe 6 are located on the same plane, and the first communicating pipe 5 and the second communicating pipe 6 are both obliquely arranged with the horizontal plane, so that the liquid is better in flowability and faster in flowing speed, and the liquid discharging speed can be increased. As shown in fig. 1, the lower chamber is provided with a blow-down valve 28. In this embodiment, the atmospheric valve 28 is a large-diameter electromagnetic valve, so as to realize rapid vacuum breaking of the lower chamber, thereby facilitating the introduction of air into the lower chamber and enabling the liquid to be normally discharged.

As shown in fig. 1, the liquid discharge unit in this embodiment includes a blowdown connection pipe 1 and a blowdown valve 25, one end of the blowdown connection pipe 1 is communicated with the bottom of the outer cylinder 4, specifically, one end of the blowdown connection pipe 1 is communicated with the lower end enclosure 3, the other end of the blowdown connection pipe 1 is communicated with a device (not shown in the figure) for collecting liquid, the blowdown valve 25 is mounted on the blowdown connection pipe 1 and is communicated with the blowdown connection pipe 1, and the blowdown valve 25 can communicate with and close the blowdown connection pipe 1. A first liquid level meter 23 is communicated between the first communication pipe 5 and the upper chamber, and a second liquid level meter 24 is communicated between the sewage connecting pipe 1 and the lower chamber.

The first liquid level meter 23 can display the liquid collection condition, so that the moisture content of the water removal tank can be conveniently observed, and the on-off of the communication valve 22 can be conveniently controlled to control the discharge of moisture. The second level gauge 24 allows visual observation of the liquid discharge in the lower chamber. The collection and drainage operations within the entire tank body can be controlled more precisely by the displayed liquid level conditions of the first gauge 23 and the second gauge 24.

As shown in fig. 1, an air pipe 26 is further communicated between the upper chamber and the lower chamber, and a cushion valve 27 is provided on the air pipe 26. Specifically, as shown in fig. 3, a first air hole 20 is formed in the side wall of the upper chamber, the first air hole 20 is located below the inner cylinder 12, a second air hole 21 is formed in the upper portion of the lower chamber, one end of the air pipe 26 is communicated with the upper chamber through the first air hole 20, the other end of the air pipe 26 is communicated with the lower chamber through the second air hole 21, and as shown in fig. 1, the buffer valve 27 is communicated with the air pipe 26. In this embodiment, the cushion valve 27 is a solenoid valve, the solenoid valve communicates the upper chamber and the lower chamber, and the delay setting can avoid the situation that the vacuum fluctuation is large when the lower chamber is merged into the vacuum system from the atmospheric state after the liquid discharge is completed. Therefore, the vacuum pressure stability of the vacuum system is effectively improved, and potential safety hazards caused by vacuum fluctuation are prevented.

Referring to fig. 5, a first access opening 7 and a second access opening 19 are formed in the side wall of the outer cylinder 4, the first access opening 7 is communicated with the upper chamber, and the second access opening 19 is communicated with the lower chamber. The first access opening 7 facilitates cleaning of waste residues in the upper chamber and maintenance of the upper chamber, while the second access opening 19 facilitates cleaning of waste residues in the lower chamber and maintenance of the lower chamber.

The specific implementation process is as follows: the water removal tank in this embodiment needs to be communicated with the front end of the vacuum pump for removing water vapor and liquid in the vacuum system, and ensuring the gas drying of the vacuum pump so as to protect the operation of the vacuum pump.

The air delivered from the front end equipment of the vacuum pump contains a large amount of impurities such as moisture or dust, so that the air is in a steam shape, the air delivered from the front end equipment of the vacuum pump enters the outer cylinder 4 from the air inlet pipe 9 and flows downwards along the spiral plate 14, the air generates rotary motion in the process of flowing downwards along the spiral plate 14, the spiral plate 14 generates an accumulation effect on the entering air, the air rotates under the action of the spiral plate 14 to generate centrifugal force due to the fact that the specific gravity of the liquid is larger than that of the air, the liquid in the air is scattered outwards, the liquid in the air is thrown out to the inner wall of the outer cylinder 4 to realize primary separation to generate water drops, the spiral plate 14 is positioned on the periphery of the inner cylinder 12, when the air flows along the spiral plate 14, the flow area is small, the flow speed is high, when the air flows to the lower part of the inner cylinder 12, the flow area below the inner cylinder 12 is large, and at the time, the water drops in the air, and the gas rises upward and enters the inner tube 12 and is discharged from the exhaust pipe 11.

The dropped liquid is located in the upper chamber, and by observing the liquid collection condition displayed by the first liquid level meter 23, when the amount of the liquid in the upper chamber is large, the communicating valve 22 is controlled to be opened, so that the first communicating pipe 5 and the second communicating pipe 6 are communicated, and the liquid collected in the upper chamber flows into the lower chamber. When the liquid in the lower chamber needs to be discharged, the communication valve 22 is closed, the emptying valve 28 is opened to break the vacuum of the lower chamber, so that the lower chamber is in an atmospheric pressure state, the water in the lower chamber can be normally discharged, the liquid in the lower chamber can be discharged by opening the blowdown valve 25, and the water discharge condition in the lower chamber can be judged by observing the liquid amount displayed by the second liquid level meter 24.

After the liquid in the lower chamber is discharged, the blowoff valve 25 is closed, the state that the communication valve 22 is closed is still kept at this time, then the buffer valve 27 is opened, the air pipe 26 is made to be a passage, the upper chamber is communicated with the lower chamber, the pressure of the upper chamber and the pressure of the lower chamber are balanced, the situation that the vacuum fluctuation is large due to the fact that the lower chamber is merged into a vacuum system in an atmospheric state after the liquid is discharged from the lower chamber is avoided, the vacuum pressure stability of the vacuum system is effectively improved, and potential safety hazards caused by the vacuum fluctuation are prevented.

And finally, the communication valve 22 is opened to enable the upper chamber and the lower chamber to be communicated with each other, so that the sedimentation volume of the whole liquid drop is larger, and the sedimentation effect is better.

Example two

As shown in fig. 7 and 8, a precisely controllable dewatering tank differs from the first embodiment in that: fixedly connected with fixed plate 16 welds in inner tube 12, and fixed plate 16 is circular platelike structure, is equipped with a plurality of air ducts 17 on the fixed plate 16, combines shown in fig. 9, and air duct 17 in this embodiment is equipped with nine, and wherein six air ducts 17 are along the circumference evenly distributed of fixed plate 16, and three air duct 17 is located six air ducts 17 and forms the circle in addition, and this three air duct 17 evenly sets up along the circumference of fixed plate 16.

As shown in fig. 8, in this embodiment, a plurality of air vents 18 are formed in the side wall of the air duct 17, and the air vent 18 of each air duct 17 is located at the lower portion of the air duct 17. Referring to fig. 9, the bottom wall of the air duct 17 is provided with through holes, and the top end of the air duct 17 is an open end, so that the air duct 17 is communicated with the exhaust pipe 11.

In this embodiment, after the gas flows from the spiral plate 14 to the lower part of the inner cylinder 12, the liquid drops settle and the gas rises upward and enters the inner cylinder 12, the gas entering the inner cylinder 12 enters the gas guide tube 17 from the side of the gas guide hole 18 on the side wall of the gas guide tube 17, and the gas is prevented from directly rising upward and being discharged from the inner cylinder 12.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. The utility model provides a but accurate control's dewatering jar, includes urceolus and inner tube, the inner tube periphery has the spiral board of spiral setting along its axial connection, the urceolus lower part is equipped with the flowing back unit that is used for the flowing back, the top intercommunication of urceolus has the blast pipe, one side intercommunication of urceolus has the intake pipe, the inner tube bottom is the opening end, the inner tube with blast pipe intercommunication, its characterized in that: the inner part of the outer barrel is fixedly connected with a gas-liquid partition plate, the gas-liquid partition plate is located on the lower portion of the outer barrel, the gas-liquid partition plate divides the outer barrel into an upper chamber and a lower chamber, the upper chamber is communicated with a first communicating pipe, the lower chamber is communicated with a second communicating pipe, a communicating valve is arranged between the first communicating pipe and the second communicating pipe, and an emptying valve is arranged in the lower chamber.

2. A precisely controllable dewatering tank according to claim 1, characterised in that: the gas-liquid partition plate is obliquely arranged.

3. A precisely controllable dewatering tank according to claim 2, characterised in that: and a first liquid level meter is communicated between the first communication pipe and the upper chamber.

4. A precisely controllable dewatering tank according to claim 1, characterised in that: the liquid discharge unit comprises a sewage discharge connecting pipe and a sewage discharge valve, the sewage discharge connecting pipe is communicated with the sewage discharge valve, and one end of the sewage discharge connecting pipe is communicated with the bottom of the lower chamber.

5. A precisely controllable dewatering tank according to claim 4, characterised in that: and a second liquid level meter is communicated between the sewage discharge connecting pipe and the lower chamber.

6. A precisely controllable dewatering tank according to claim 1, characterised in that: an air pipe is communicated between the upper chamber and the lower chamber, and a buffer valve is arranged on the air pipe.

7. A precisely controllable dewatering tank according to claim 1, characterised in that: the inner cylinder is fixedly connected with a fixing plate, the fixing plate is provided with a plurality of air guide tubes, the side walls of the air guide tubes are provided with a plurality of air guide holes, the bottom walls of the air guide tubes are provided with through holes, and the top ends of the air guide tubes are communicated with the exhaust pipe.

8. A precisely controllable dewatering tank according to claim 1, characterised in that: the air inlet pipe and the exhaust pipe are vertically arranged, the air inlet pipe is located on the upper portion of the outer barrel, and the air inlet pipe is located above the spiral plate.

9. A precisely controllable dewatering tank according to claim 8, characterised in that: the top fixedly connected with baffle of spiral plate, the intake pipe is located the both sides of baffle, the both sides of baffle respectively with inner tube and urceolus fixed connection, the baffle with the contained angle has between the intake pipe.

10. A precisely controllable dewatering tank according to claim 1, characterised in that: a first access hole and a second access hole are formed in the side wall of the outer barrel, the first access hole is communicated with the upper cavity, and the second access hole is communicated with the lower cavity.

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