CN218691926U - Automatic washing tank - Google Patents

Abstract

The embodiment of the application relates to the field of cleaning equipment, particularly relates to an automatic flushing tank, and a tank body is provided with: the washing device is arranged above the interior of the tank body, is connected with an external water source and is used for cleaning the demister; the placing part is arranged in the tank body and positioned below the washing device and is used for placing a demister to be cleaned; purifier, purifier sets up jar body bottom for hold and purify the water after the washing, carry out purification treatment through purifier to the water after washing, thereby make the water after the washing up to standard, be convenient for discharge or retrieve, carry out the meticulous washing of fixed point to the defroster through washing unit, thereby save the water resource, accept and purify the water after the washing simultaneously, further save the water resource, realize reducing the effect of water waste.

Description

Automatic washing tank

Technical Field

The embodiment of the application relates to the field of cleaning equipment, in particular to an automatic flushing tank.

Background

The demister mainly comprises fixing devices such as wave-shaped blades, plates and clamping strips, mist with the particle size of 10-60 microns is easily generated when an absorption tower runs in wet desulphurization, the mist contains water, and is dissolved with sulfuric acid, sulfate, sulfur dioxide and the like, and can cause pollution and serious corrosion of a fan, a heat exchanger and a flue, the demister has the function of trapping mist particles and slurry drops carried by flue gas in the spray absorption process, and the demister needs to be regularly washed in order to keep the working efficiency of the demister.

Among the prior art, often wash the defroster by a large scale through the water pipe when wasing the defroster, wash the in-process and can use a large amount of water, and the water after washing can not directly discharge or retrieve, cause easily and lead to the water waste.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an automatic flushing tank, and aims to solve the problem of water resource waste.

The first aspect of the embodiment of the present application provides an automatic flushing tank, including a jar body, jar internal being provided with:

the washing device is arranged above the interior of the tank body, is connected with an external water source and is used for cleaning the demister;

the placing part is arranged in the tank body and positioned below the washing device and used for placing a demister to be cleaned, and an operating door for taking and placing the demister is arranged at a position, corresponding to the placing part, on the tank body;

and the purifying device is arranged at the bottom of the tank body and is used for containing and purifying the cleaned water.

Optionally, the flushing device comprises:

the water spraying head is arranged in the tank body in a sliding mode, the water outlet end of the water spraying head faces the placing part, and the water inlet end of the water spraying head is connected with an external water source;

the first driving part is used for driving the sprinkler head to slide.

Optionally, the first driving part includes:

the guide rod is arranged in the tank body along the horizontal direction, and the sprinkler head is arranged on the guide rod in a sliding manner;

the lead screw is arranged in the tank body along a direction parallel to the guide rod, and the sprinkler head is in threaded connection with the lead screw;

the first driving source is arranged at one end of the screw rod and used for driving the screw rod to rotate.

Optionally, the driving part includes:

one end of the moving frame is in threaded connection with the lead screw, the other end of the moving frame is in sliding connection with the guide rod, and the water spraying head is arranged on the moving frame in a sliding mode in the direction perpendicular to the guide rod;

and the second driving source is used for driving the sprinkler head to slide along the direction vertical to the guide rod.

Optionally, the interface of the internal space of jar becomes the rectangle, be provided with mounting panel and baffle on the relative lateral wall of jar body respectively, first driving source includes a driving motor, a driving motor sets up on the mounting panel, the one end of lead screw with a driving motor transmission is connected, the other end rotates and sets up on the baffle, the both ends of guide bar respectively with the mounting panel with baffle fixed connection.

Optionally, the purification device comprises:

the water tank is arranged below the placing part and used for containing the cleaned water;

the feeding door is arranged at the opening and used for feeding the purified materials into the water tank;

and the stirring part is arranged in the water tank and is used for stirring the water in the water tank after the purified materials are put into the water tank.

Optionally, the stirring section comprises:

the stirring rod is rotatably arranged in the water tank;

and the second driving part is arranged at the bottom of the water tank and is used for driving the stirring rod to rotate.

Optionally, a drain pipe communicated with the outside is arranged at the bottom of the water tank, and a valve body for controlling the drain pipe to be connected and disconnected is arranged on the drain pipe.

Optionally, a guide plate is further arranged in the tank body, the guide plate is funnel-shaped, and the bottom opening of the guide plate faces the purification device.

Optionally, an access hole is formed in the top of the tank body, a surrounding baffle is further arranged around the access hole, and an escalator is arranged on the side wall of the tank body.

Has the advantages that:

the utility model provides an automatic flushing tank, which comprises a tank body, the internal space that is used for washing that has seted up of jar, jar body top is provided with washing unit, jar body below is provided with the purifier who is used for accepting the water after washing, be provided with the portion of placing that is used for placing the defroster of treating abluent between washing unit and the purifier, when needs wash the defroster, place the defroster in the portion department of placing, then carry out meticulous washing to the defroster through washing unit, the water after washing flows into purifier downwards, then carry out purification treatment through purifier after to washing, thereby make the water after the washing up to standard, be convenient for discharge or retrieve, carry out fixed point meticulous washing to the defroster through washing unit, thereby save the water resource, accept and purify the water after washing simultaneously, further save the water resource, realize reducing the extravagant effect of water resource.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of a flush tank according to an embodiment of the present application;

FIG. 2 isbase:Sub>A schematic cross-sectional view A-A of one embodiment of the present application;

fig. 3 is a schematic cross-sectional view of B-B according to an embodiment of the present application.

Description of reference numerals: 1. a tank body; 11. an access hole; 12. fencing; 13. an escalator; 14. a baffle; 2. A flushing device; 21. a sprinkler head; 22. a first driving section; 221. a guide bar; 222. a movable frame; 223. A lead screw; 224. a first drive source; 225. a second drive source; 23. mounting a plate; 24. a baffle plate; 3. a placement section; 31. an operating door; 4. a purification device; 41. a water tank; 42. a feeding door; 43. a stirring section; 431. A stirring rod; 432. a second driving section; 44. a drain pipe; 5. a demister.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

In the related technology, the demister mainly comprises fixing devices such as wave-shaped blades, plates and clamping strips, during wet desulphurization, when an absorption tower runs, mist with the particle size of 10-60 microns is easily generated, the mist not only contains water, but also contains dissolved sulfuric acid, sulfate, sulfur dioxide and the like, and can cause contamination and serious corrosion of a fan, a heat exchanger and a flue, the demister has the function of trapping mist particles and slurry drops carried by flue gas in the spray absorption process, and the demister needs to be periodically washed in order to maintain the working efficiency of the demister.

When washing the defroster, because harmful substance is more, therefore the manual cleaning is comparatively troublesome, consequently often adopts the large tracts of land to wash, and the water consumption is great, leads to a large amount of water to be wasted to wash the back aquatic and contain a large amount of harmful substance, unable direct discharge and can not directly discharge, lead to the water resource to waste in a large number.

In view of this, with reference to fig. 1, the embodiment of the present application provides an automatic flushing tank, including a tank body 1, the tank body 1 is a cylinder and is disposed on the ground along a vertical direction, the tank body 1 includes a cavity inside, and with reference to fig. 1 and 2, the tank body 1 is provided with:

washing unit 2, washing unit 2 set up in the inside top of jar body 1, and are connected with outside water source for wash defroster 5.

The external water source comprises a water pump, the water outlet end of the water pump is connected with the flushing device 2 through a water pipe and used for supplying water to the flushing device 2, the flushing device 2 can be arranged in a sliding mode in some specific embodiments, and the water pipe moves along with the flushing device 2 when the flushing action is executed.

A manual gate valve or an electromagnetic valve can be arranged between the external water source and the washing device 2, so that the on-off between the external water source and the washing device 2 is controlled, and the starting and stopping of the washing process are controlled.

The tank comprises a placing part 3, wherein the placing part 3 is arranged in the tank body 1 and is positioned below the washing device 2 and used for placing a demister 5 to be cleaned, and an operating door 31 for taking and placing the demister 5 is arranged at a position, corresponding to the placing part 3, on the tank body 1.

The placing part 3 comprises an operation door 31 arranged on the tank body 1, a placing frame for placing the demister 5 is arranged in the tank body 1 at a position corresponding to the operation door 31, and the operation door 31 is opened to place the unwashed demister 5 on the placing frame or take out the washed demister 5 from the operation door 31.

In other embodiments, the placing section 3 may further include a fixing section for fixing the demister 5, and the demister 5 may be placed in the tank body 1 and then the demister 5 may be fixed by the fixing section to be cleaned, for example, the fixing section may be a snap groove provided on an inner wall of the tank body 1 or a clip for contacting the demister 5.

And the purifying device 4 is arranged at the bottom of the tank body 1 and is used for containing and purifying the cleaned water.

After the washing device 2 at the top cleans the demister 5, water with stains on the demister 5 enters the purifying device 4 downwards, and because the cleaned water contains more harmful elements and cannot be directly discharged, the used water is received by the purifying device 4 and then purified, so that the used water can be reused or discharged.

Through the application provides an automatic washing tank, including a jar body 1, the internal space that is used for washing that has seted up of jar, 1 top of jar body is provided with washing unit 2, 1 below of jar body is provided with the purifier 4 that is used for accepting water after washing, be provided with the portion of placing 3 that is used for placing the defroster 5 of treating abluent between washing unit 2 and the purifier 4, when needs wash defroster 5, place defroster 5 in the portion of placing 3 department, then carry out meticulous washing to defroster 5 through washing unit 2, water after the washing flows into purifier 4 downwards, then carry out purification treatment through purifier 4 to water after the washing, thereby make the water after the washing up to standard, be convenient for discharge or retrieve, carry out fixed point meticulous washing to defroster 5 through washing unit 2, thereby save the water resource, accept and purify water after the washing simultaneously, further save the water resource, realize reducing the effect of water resource.

In some embodiments, with reference to fig. 2 and 3, the flushing device 2 comprises:

the sprinkler head 21 is arranged in the tank body 1 in a sliding manner, the water outlet end of the sprinkler head 21 faces the placing part 3, and the water inlet end of the sprinkler head 21 is connected with an external water source;

wherein, the sprinkler bead 21 is towards the portion of placing 3 of jar internal direct below, sprinkler bead 21 is towards defroster 5 when defroster 5 puts into jar body 1, thereby water can drop on defroster 5 from sprinkler bead 21 blowout back and realize washing of defroster 5, washing the in-process, change the position of sprinkler bead 21 through sliding sprinkler bead 21, realize washing 5 each position, and can wash comparatively serious local focus to the pollution, effectively improve the washing effect to defroster 5.

A first driving part 22, the first driving part 22 is used for driving the sprinkler head 21 to slide.

In the washing process, the first driving part 22 drives the sprinkler head 21 to automatically move, so that the washing process is more convenient and faster without manual operation.

In some embodiments, the first driving part 22 includes:

a guide rod 221, the guide rod 221 is arranged in the tank body 1 along the horizontal direction, and the sprinkler head 21 is arranged on the guide rod 221 in a sliding way;

the guide rod 221 is fixedly arranged in the tank 1 along a direction perpendicular to the central axis of the tank 1, and the sprinkler head 21 and the guide rod 221 are slidably arranged along the length direction of the guide rod 221, so as to guide the movement direction of the sprinkler head 21.

The screw 223 is arranged in the tank body 1 along the direction parallel to the guide rod 221, and the water spray head 21 is in threaded connection with the screw 223;

under the positioning action of the guide rod 221 and the lead screw 223, the sprinkler head 21 can only slide along the guide rod 221 and cannot rotate along with the lead screw 223, so that the sprinkler head 21 can be driven to slide and slide along the guide rod 221 in a reciprocating manner through the reciprocating rotation of the lead screw 223 through a thread effect.

A first driving source 224, which is disposed at one end of the screw 223 and is used for driving the screw 223 to rotate.

In this embodiment, the first driving source 224 may be a motor, and an output shaft of the electric appliance is in transmission connection with the lead screw 223, so as to realize the sliding of the sprinkler head 21 by driving the lead screw 223 to rotate.

In other embodiments, the first driving portion 22 may also be a driving source such as an air cylinder or a hydraulic cylinder, so as to drive the sprinkler head 21 to slide back and forth along a preset direction, thereby implementing a fixed-point fine washing on the demister 5.

In some embodiments, the driving part includes:

a moving frame 222, one end of the moving frame 222 is connected with the screw 223 by screw thread, the other end of the moving frame 222 is connected with the guide rod 221 in a sliding way, and the water spray head 21 is arranged on the moving frame 222 in a sliding way along the direction vertical to the guide rod 221;

when the demister 5 is cleaned, it is necessary to clean the demister 5 in the direction of the guide rod 221 and other positions, and in order to increase the cleaning area, a sliding movable frame 222 is provided on the guide rod 221, the movable frame 222 is screwed to the screw rod 223, the sprinkler head 21 is attached to the movable frame 222, and the movable frame 222 is driven by the screw rod 223 to move, so that the sprinkler head 21 can be driven to move.

Meanwhile, the sprinkler head 21 is arranged on the movable frame 222 in a sliding mode along the direction perpendicular to the guide rod 221, and the sprinkler head 21 is arranged in a sliding mode along the direction perpendicular to the guide rod 221, so that the movement in the other direction can be achieved, the movable range of the sprinkler head 21 is effectively enlarged in cooperation with the movement of the movable frame 222, and the effect of performing fixed-point fine washing on any position of the demister 5 is achieved.

A second driving source 225, the second driving source 225 being used to drive the sprinkler head 21 to slide in a direction perpendicular to the guide rod 221.

In this embodiment, the second driving source 225 is an electric telescopic rod, and the movement of the sprinkler head 21 in the other direction is realized by the extension and retraction of the electric telescopic rod, so that the operation process is more convenient. In other embodiments, the second driving source 225 may also be a cylinder, a hydraulic cylinder, or a lead screw 223, and the like, which will not be described in detail herein.

In some embodiments, the cross section of the inner space of the tank 1 is rectangular, the mounting plate 23 and the baffle plate 24 are respectively disposed on the opposite side walls of the tank 1, the first driving source 224 includes a first driving motor disposed on the mounting plate 23, one end of the screw 223 is in transmission connection with the first driving motor, the other end is rotatably disposed on the baffle plate 24, and the two ends of the guiding rod 221 are respectively fixedly connected with the mounting plate 23 and the baffle plate 24.

The two ends of the guide rod 221 are respectively fixedly connected with the mounting plate 23 and the baffle plate 24, the first driving motor is mounted on the mounting plate 23, the screw 223 is coaxially and fixedly connected with the first driving motor, the other end of the guide rod is rotatably arranged on the baffle plate 24, the moving frame 222 moves between the mounting plate 23 and the baffle plate 24, the moving range of the moving frame 222 is limited through the baffle plate 24, and the moving frame 222 is prevented from being separated from the screw 223.

In some embodiments, the purification device 4 comprises:

a water tank 41, wherein the water tank 41 is arranged below the placing part 3 and is used for containing water after cleaning;

after the sprinkler bead 21 sprayed water and cleaned demister 5, water falls in the basin 41 after rushing down the pollutant from demister 5, accepts through basin 41 to carry out purification treatment, avoid sewage direct discharge to cause the pollution, it is more convenient when making the processing simultaneously.

The feeding door 42 is provided with an opening on the side part of the tank body 1, and the feeding door 42 is arranged at the opening and used for feeding the purified materials into the water tank 41;

wherein, throw the bin gate 42 and set up the position that corresponds with basin 41 on jar body 1 lateral wall, when handling the water in jar body 1, throw the bin gate 42 and open and to throw the material that can use into the basin 41 in to improve the water purification effect, make whole process more convenient.

When a trouble or the like occurs in the water tank 41, the material feeding door 42 may be used to treat the portion in the water tank 41, thereby repairing the internal device or cleaning the internal water.

And a stirring section 43, wherein the stirring section 43 is provided in the water tank 41, and is used for stirring the water in the water tank 41 after the purified material is put into the water tank.

After the material for purifying water is added, the material is dissolved faster by stirring in the stirring section 43, and the water purification speed and purification effect are improved.

In some embodiments, the stirring section 43 includes:

a stirring rod 431 rotatably provided in the water tank 41;

wherein, puddler 431 sets up main shaft and many spinal branchs branch at basin 41 middle part including rotating, drives many spinal branchs branch through the main shaft during the purification water and can fully dissolve in water with the material of purification usefulness in aquatic stirring to improve purifying effect.

A second driving part 432, the second driving part 432 being provided at the bottom of the water tank 41 for driving the stirring rod 431 to rotate.

In this embodiment, the second driving part 432 may include a second driving motor, the second driving motor is disposed at the bottom of the water tank 41, a power output shaft of the second driving motor is coaxial with the tank body 1, a main shaft of the stirring rod 431 is coaxially and fixedly disposed on the power output shaft of the second driving motor, and a stirring effect can be achieved when the second driving motor rotates.

In some embodiments, the bottom of the water tank 41 is provided with a drain pipe 44 communicated with the outside, and the drain pipe 44 is provided with a valve body for controlling the on-off of the drain pipe 44.

After the water which washes the demister 5 is purified, the water discharging pipe 44 is opened by the control valve body, so that the purified water is discharged, and the water discharging process is more convenient.

In some embodiments, a flow guiding plate 14 is further disposed in the tank 1, the flow guiding plate 14 is in a funnel shape, and the bottom of the flow guiding plate 14 is open to the purifying device 4.

Wherein guide plate 14 is located jar body 1 middle part, and is located between portion 3 and the basin 41 of placing, and the edge of guide plate 14 circumference and the inner wall sealing connection of jar body 1 will wash the water gathering that falls down in the basin 41 after leaking hopper-shaped guide plate 14, avoid the water spill through washing.

In other embodiments, another feeding port is further formed on the tank body 1, the feeding port is located above the flow guide plate 14, and when the materials are fed, the materials are fed from the feeding port, so that the materials slide down along the flow guide plate 14 to the water tank 41, and the feeding process is more convenient.

In some specific embodiments, the top of the tank body 1 is provided with an access hole 11, a surrounding barrier 12 is further arranged around the access hole 11, and the side wall of the tank body 1 is provided with an escalator 13.

Wherein, the access hole 11 goes out to be provided with the access door, when the device in the jar body 1 needs the maintenance, can inspect or maintain inside through access hole 11, encloses around the access hole 11 simultaneously and establishes the round and enclose fender 12, and operating personnel falls when avoiding the maintenance, improves the security of device to be provided with the appendage of being convenient for step on jar body 1 on the lateral wall of jar body 1, it is more convenient when making the maintenance.

In a specific embodiment, the material for purifying water is first put into the water tank 41 through the feeding door 42, the operation door 31 is opened to fix the demister 5 at the placing part 3, then the external water source is conducted with the flushing device 2 to spray water from the sprinkler head 21, then the sprinkler head 21 is driven to move by the first driving source 224 and the second driving source 225 of the first driving part 22, and further the sprinkler head 21 is controlled to flush each position of the demister 5, so as to achieve the effect of performing fixed-point fine flushing on the demister 5, the flushed water falls into the water tank 41 through the deflector 14 after falling on the deflector 14, and then the flushed water is stirred by the second driving part 432, and the water is purified under the effect of the purifying material, so that the cleaned water reaches the standard and is convenient to be discharged or recycled, and then the water is discharged or recycled through the drain pipe 44, thereby saving water resource and achieving the effect of reducing waste of water resource.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or should not be construed as indicating or implying relative importance. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrases "comprising one of 8230 \8230;" does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.

The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.

Claims (10)

1. The utility model provides an automatic flushing tank, includes jar body (1), its characterized in that, be provided with in jar body (1):

the washing device (2) is arranged above the inner part of the tank body (1), is connected with an external water source and is used for cleaning the demister (5);

the placing part (3) is arranged in the tank body (1) and is positioned below the washing device (2) and used for fixing the demister (5) to be cleaned, and an operating door (31) used for taking and placing the demister (5) is arranged on the tank body (1) at a position corresponding to the placing part (3);

and the purifying device (4) is arranged at the bottom of the tank body (1) and is used for containing and purifying the cleaned water.

2. The automatic flushing tank of claim 1, characterized in that said flushing device (2) comprises:

the water spraying head (21) is arranged in the tank body (1) in a sliding mode, the water outlet end of the water spraying head (21) faces the placing part (3), and the water inlet end of the water spraying head (21) is connected with an external water source;

a first driving part (22), wherein the first driving part (22) is used for driving the sprinkler head (21) to slide.

3. The automatic flush tank according to claim 2, wherein said first driving portion (22) comprises:

the guide rod (221), the said guide rod (221) is set up in the said tank (1) along the horizontal direction, the said sprinkler head (21) is slipped and set up on the said guide rod (221);

the lead screw (223) is arranged in the tank body (1) along a direction parallel to the guide rod (221), and the water spray head (21) is in threaded connection with the lead screw (223);

a first driving source (224) which is arranged at one end of the screw rod (223) and is used for driving the screw rod (223) to rotate.

4. The automatic flush tank of claim 3, wherein said drive section comprises:

one end of the movable frame (222) is in threaded connection with the lead screw (223), the other end of the movable frame (222) is in sliding connection with the guide rod (221), and the water spray head (21) is arranged on the movable frame (222) in a sliding mode in a direction perpendicular to the guide rod (221);

a second driving source (225), wherein the second driving source (225) is used for driving the water spraying head (21) to slide along the direction vertical to the guide rod (221).

5. The automatic flushing tank of claim 3, characterized in that the cross-section of the inner space of the tank body (1) is rectangular, the opposite side walls of the tank body (1) are respectively provided with a mounting plate (23) and a baffle plate (24), the first driving source (224) comprises a first driving motor, the first driving motor is arranged on the mounting plate (23), one end of the lead screw (223) is in transmission connection with the first driving motor, the other end is rotatably arranged on the baffle plate (24), and the two ends of the guide rod (221) are respectively fixedly connected with the mounting plate (23) and the baffle plate (24).

6. The automatic flushing tank of claim 1, characterized in that said purification device (4) comprises:

a water tank (41), wherein the water tank (41) is arranged below the placing part (3) and is used for containing water after cleaning;

the feeding door (42) is arranged on the side part of the tank body (1) and is used for feeding purification materials into the water tank (41);

a stirring section (43), wherein the stirring section (43) is arranged in the water tank (41) and is used for stirring the water in the water tank (41) after the purified materials are put into the water tank.

7. The automatic flushing tank of claim 6, characterized in that said stirring portion (43) comprises:

a stirring rod (431), wherein the stirring rod (431) is rotatably arranged in the water tank (41);

a second driving part (432), wherein the second driving part (432) is arranged at the bottom of the water tank (41) and is used for driving the stirring rod (431) to rotate.

8. The automatic flushing tank of claim 6, characterized in that the bottom of the water tank (41) is provided with a drain pipe (44) communicated with the outside, and the drain pipe (44) is provided with a valve body for controlling the on-off of the drain pipe (44).

9. The automatic flushing tank of claim 1, characterized in that a deflector (14) is further arranged inside the tank (1), said deflector (14) being funnel-shaped, the bottom opening of said deflector (14) facing the purging device (4).

10. An automatic flushing tank as claimed in claim 1, characterized in that the top of the tank body (1) is provided with an access opening (11), a surrounding barrier (12) is further arranged around the access opening (11), and a staircase (13) is arranged on the side wall of the tank body (1).

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