CN113319091B

CN113319091B - Rotary tank washing machine

Info

Publication number: CN113319091B
Application number: CN202110600738.1A
Authority: CN
Inventors: 郑亚化
Original assignee: Dongshan Donglong Metal Equipment Manufacturing Co ltd
Current assignee: Dongshan Donglong Metal Equipment Manufacturing Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-12-27
Anticipated expiration: 2041-05-31
Also published as: CN113319091A

Abstract

The invention discloses a rotary tank washing machine which comprises a machine table, a water supply part, a first washing line, a second washing line, a third washing line, a first indexing mechanism and a second indexing mechanism, wherein the water supply part is arranged on the machine table, the water supply part is respectively connected with the first washing line, the second washing line and the third washing line, the first washing line, the second washing line and the third washing line are arranged on the machine table in parallel, the output end of the first washing line and the input end of the second washing line are arranged on the first indexing mechanism, and the output end of the second washing line and the input end of the third washing line are arranged on the second indexing mechanism. Through setting up the washing jar machine that circles round for the jar bottle can obtain abundant washing on many cleaning lines, improves the clean degree and the cleaning efficiency of jar bottle.

Description

Rotary tank washing machine

Technical Field

The invention relates to the field of tank washers, in particular to a rotary tank washer.

Background

After the can is produced, attachments may exist on the inner wall and the outer wall of the can, and the can needs to be thoroughly cleaned inside and outside due to the sanitary requirement of the next step of canning. The existing tank washing machine has a single cleaning line, and part of the tank washing machines can only clean the tank bottles once and cannot continuously perform circulating cleaning, so that the cleaning force is poor, and the tank bottles cannot easily reach the sanitary standard required by canning.

In view of the above, the present inventors have made intensive studies to solve the above-mentioned drawbacks of the prior art and have developed the present invention.

Disclosure of Invention

The invention mainly aims to provide a rotary tank washer, which has the characteristic that a plurality of cleaning lines circularly wash a tank and improves the cleaning degree and the cleaning efficiency of the tank washer.

In order to achieve the above purpose, the solution of the invention is:

the utility model provides a wash tank machine circles round, wherein, including board, water supply portion, first washing line, second washing line, third washing line, first indexing mechanism and second indexing mechanism, the water supply portion is installed on the board, the water supply portion respectively with first washing line, second washing line, third washing line are connected, parallel arrangement is in between first washing line, second washing line, the third washing line on the board, the output of first washing line with the input of second washing line sets up on first indexing mechanism, the output of second washing line and the input of third washing line set up on second indexing mechanism.

Further, the first indexing mechanism and the second indexing mechanism respectively comprise a transmission disc and a first driving device, the transmission disc is connected with the first driving device, the first indexing mechanism rotates anticlockwise under the driving of the first driving device, and the second indexing mechanism rotates clockwise under the driving of the first driving device.

Furthermore, a plurality of water spraying openings are formed in the first cleaning line, the second cleaning line and the third cleaning line respectively, and the water spraying openings are communicated with the water supply portion respectively.

Furthermore, the first cleaning line, the second cleaning line and the third cleaning line are respectively provided with a transmission rail for enabling the tank bottles to advance, the transmission rails are respectively connected with a second driving device, and the water spray ports are aligned to the transmission rails.

Further, be provided with a plurality of rotation belt cleaning device on the first washing line, rotation belt cleaning device rotates the brush with the second that is used for wasing jar bottle inner wall including the first brush that rotates that surrounds at jar bottle outer wall, the second rotates the brush setting and is in first rotation brush inner chamber, first rotation brush and second rotate and are formed with the accommodation space who holds jar bottle lateral wall between the brush.

Furthermore, air bags are respectively arranged in the first rotating brush and the second rotating brush, hollow supporting tubes are connected to the air bags in a penetrating mode, and electric inflation pumps are connected to the hollow supporting tubes externally.

Further, be provided with the response contact on the transmission track inner wall, the response contact is connected with water yield controller, water supply portion is including the inlet tube, water yield controller respectively with the inlet tube is connected with the water jet.

Further, the water flow controller is including push rod, reset spring, fixed stop, activity stopper and shaft, be provided with on the shaft the activity stopper, the shaft be provided with activity stopper department still with advance water piping connection, fixedly connected with push rod on the activity stopper, fixed stop sets up the shaft inner chamber, the push rod passes fixed stop sets up, the push rod periphery is provided with reset spring, reset spring sets up fixed stop keeps away from one side of activity stopper, the push rod certainly wear out on the shaft and with the inductive contact is connected.

Further, all be provided with the first beat that is located both sides on first indexing mechanism and the second indexing mechanism respectively and send a jar carousel and second beat to send a jar carousel, first beat send a jar carousel and second beat send all evenly to divide on the jar carousel and have a plurality of to be used for holding the chamber that holds of jar bottle, first beat send a jar carousel and second beat to send a jar carousel respectively all with the transmission track is connected, on first indexing mechanism, the second indexing mechanism and the transmission track respectively fixedly connected with dial a jar manipulator, dial a jar manipulator and send a rotation cooperation of jar carousel and second beat to stretch into along with first beat stir the intracavity and stir a jar bottle and remove.

Further, all be provided with the drainage brush on second washing line and the third washing line respectively, the drainage brush is including handle and clean piston, handle and clean piston connection, it is formed with drainage channel to run through in handle and the clean piston, is located the drainage of handle reaches the external drainage pipe that has.

After adopting the structure, the rotary tank washing machine provided by the invention at least has the following beneficial effects:

1. by arranging the rotary tank washing machine, the tank bottles conveyed to the cleaning line are firstly cleaned for the first time through the first cleaning line in the advancing process, then the advancing direction of the tank bottles is changed through the first indexing mechanism, so that the tank bottles are conveyed to the second cleaning line for the second time of cleaning, then the advancing direction of the tank bottles is changed for the second time through the second indexing mechanism, and the tank bottles enter the third cleaning line for the final cleaning; first cleaning line, second cleaning line and third cleaning line are parallel arrangement to change the jar bottle trend through indexing mechanism, can make full use of space carry out the setting of cleaning line, increase the washing dynamics and the cleaning efficiency to the jar bottle.

2. Through setting up rotation belt cleaning device, when the jar bottle that has more attachment gets into first cleaning line through the track and washs for the first time to when rotating the belt cleaning device below, the track stops the operation temporarily, rotation belt cleaning device drops, accommodation space between in first rotation brush and the second rotation brush makes the lateral wall of jar bottle get into, and after jar bottle lateral wall fully got into accommodation space, the gasbag began to aerify and expands for first rotation brush and second rotation brush can fully laminate the outer wall and the inner wall of jar bottle, and because the second rotation brush sets up first rotation brush inner chamber, first rotation brush and second rotation brush disalignment set up, so first rotation brush and second rotation brush can not the different speed or not equidirectional rotation when rotating clean, prevent that jar bottle from reducing cleaning degree along with the rotation of rotation brush.

3. Through setting up the response contact on the transmission track, be provided with a plurality of response contact on the transmission track, when the jar bottle is not through the response contact, the water jet of response contact department does not carry out water spray cleaning or carries out the water spray of less flow, when the jar bottle is gradually through the response contact, the outer wall of jar bottle touches gradually and pushes away when pressing down the response contact, the movable stopper is pushed away outwards, rivers crescent gets into in the water jet, when the jar bottle is located fully to press on the response contact, rivers also reach the biggest this moment, can fully spray the cleaning to the jar bottle, when the jar bottle moves away, rivers weaken gradually, consequently, vacancy between two jar bottles can not or have less rivers to spray, can reach the effect of water conservation like this, reduce the cleaning cost.

Fourth, through setting up first beat is sent a jar carousel and a jar carousel device is sent to second beat, can make the jar bottle that the transmission track sent to go into one by one and hold the intracavity earlier, dials into or dial out by dialling a jar manipulator again, avoids the beat mistake to lead to too many jar bottles to be conveyed on the indexing mechanism and the pile that arouses.

Compared with the prior art, the rotary tank washing machine is arranged, so that the tank can be fully washed on a plurality of washing lines, and the cleaning degree and the washing efficiency of the tank are improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic front view of the present invention.

FIG. 4 is a side view of the present invention.

Fig. 5 is a schematic cross-sectional view of the rotary cleaning apparatus of the present invention.

Fig. 6 is a schematic sectional view showing another state of the rotary cleaning apparatus of the present invention.

Fig. 7 is a front view of the rotary cleaning device of the present invention.

Fig. 8 is a front view of a track with inductive contacts according to the present invention.

Fig. 9 is a schematic sectional view showing the structure of the water control device of the present invention.

Fig. 10 is a schematic top view of the first indexing mechanism of the present invention.

Fig. 11 is a sectional view schematically showing a structure of a drain brush according to the present invention.

In the figure:

a machine table 1;

a water supply section 2; a water inlet pipe 21;

a first cleaning line 3; a first indexing mechanism 31; a transfer tray 311; a first drive device 312; a water jet 32; the transfer rail 33; the second driving device 331; a driving roller 332; a gear 333; the sensing contacts 334; a push rod 335; a return spring 336; a fixed baffle 337; a movable plug 338; a tube body 339; rotating the cleaning device 34; the first rotating brush 341; a second rotatable brush 342; the accommodating space 343; an air bag 344; a hollow support tube 345; a cleaning sponge 346; a first rotating shaft 347; a second rotating shaft 348;

a second cleaning line 4; the second indexing mechanism 41; a first beat can feed turntable 42; a receiving chamber 421; a second beat can feeding turntable 43; a can-setting robot 44;

a third cleaning line 5; a drain brush 51; a handle 511; a cleaning piston 512; a drainage channel 513; a drain pipe 514;

can 100.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by the specific embodiment.

As shown in fig. 1 to 11, the rotary tank washing machine according to the present invention includes a machine table 1, a water supply portion 2, a first washing line 3, a second washing line 4, a third washing line 5, a first indexing mechanism 31 and a second indexing mechanism 41, wherein the water supply portion 2 is mounted on the machine table 1, the water supply portion 2 is respectively connected to the first washing line 3, the second washing line 4 and the third washing line 5, the first washing line 3, the second washing line 4 and the third washing line 5 are arranged in parallel on the machine table 1, an output end of the first washing line 3 and an input end of the second washing line 4 are arranged on the first indexing mechanism 31, and an output end of the second washing line 4 and an input end of the third washing line 5 are arranged on the second indexing mechanism 41.

Thus, according to the rotary can washing machine provided by the invention, in the advancing process, the can bottle 100 conveyed to the cleaning line is firstly cleaned by the first cleaning line 3, then the advancing direction of the can bottle is changed by the first indexing mechanism 31, and the can bottle is conveyed to the second cleaning line 4 for second cleaning, and then the advancing direction of the can bottle is changed by the second indexing mechanism 41 for second time, and the can bottle enters the third cleaning line 5 for final cleaning; first cleaning line 3, second cleaning line 4 and third cleaning line 5 are parallel arrangement to change jar bottle 100 trend through indexing mechanism, can make full use of space carry out the setting of cleaning line, increase the washing dynamics and the cleaning efficiency to jar bottle 100.

Preferably, the first indexing mechanism 31 and the second indexing mechanism 41 respectively include a transmission disc 311 and a first driving device 312, the transmission disc 311 is connected with the first driving device 312, the first indexing mechanism 31 rotates counterclockwise under the driving of the first driving device 312, and the second indexing mechanism 41 rotates clockwise under the driving of the first driving device 312. By the steering action of the transfer tray 311, the jar 100 can change the direction of travel 180 degrees within a small range, conveniently moving between cleaning lines. The first driving device 312 is a driving motor.

Preferably, a plurality of water spraying ports 32 are formed on the first cleaning line 3, the second cleaning line 4 and the third cleaning line 5, and the water spraying ports 32 are respectively communicated with the water supply part 2. Further, the first cleaning line 3, the second cleaning line 4, and the third cleaning line 5 are respectively provided with a conveying rail 33 for advancing the cans 100, the conveying rails 33 are respectively connected with a second driving device 331, and the water spraying ports 32 are aligned with the conveying rails 33. The second driving device 331 is a motor and a driving roller 332 disposed on the machine platform 1, a gear 333 is further disposed on the driving roller 332, and the transmission rail 33 performs transmission motion under the driving of the driving roller 332.

Preferably, a plurality of rotary cleaning devices 34 are arranged on the first cleaning line 3, the rotary cleaning devices 34 include a first rotary brush 341 surrounding the outer wall of the can bottle 100 and a second rotary brush 342 for cleaning the inner wall of the can bottle 100, the second rotary brush 342 is arranged in the inner cavity of the first rotary brush 341, and an accommodating space 343 for accommodating the side wall of the can bottle 100 is formed between the first rotary brush 341 and the second rotary brush 342. Furthermore, the first rotating brush 341 and the second rotating brush 342 are respectively provided with an air bag 344 therein, the air bag 344 is connected with a hollow support tube 345 in a penetrating manner, the hollow support tube 345 is externally connected with an electric inflator pump (not shown in the figure), and the first rotating brush 341 and the second rotating brush 342 are also coated with cleaning sponge 346. The first rotating brush 341 is disposed in a ring shape to fit the outer side of the can 100, and the second rotating brush 342 is disposed in a solid cylinder shape to fit the inner cavity of the can 100. By providing the rotary cleaning device 34, when the bottle 100 with a large amount of attachments enters the first cleaning line 3 through the rail to be cleaned for the first time and passes under the rotary cleaning device 34, the operation of the transfer rail 33 is temporarily stopped, the rotary cleaning device 34 is lowered, the accommodating space 343 between the first rotary brush 341 and the second rotary brush 342 allows the side wall of the bottle 100 to enter, as shown in fig. 5, and when the side wall of the bottle 100 sufficiently enters the accommodating space 343, the air cells 344 start to inflate and expand, so that the first rotary brush 341 and the second rotary brush 342 can sufficiently adhere to the outer wall and the inner wall of the bottle 100, and since the second rotary brush 342 is provided in the inner cavity of the first rotary brush 341 and the second rotary brush 342 are not axially provided, the first rotary brush 341 and the second rotary brush 342 can rotate at different speeds or in different directions during the rotary cleaning, and the bottle 100 is prevented from decreasing the degree of cleaning as the rotary brush rotates, as shown in fig. 6, when the inside of the air cells is extracted, the second rotary brush 341 and the second rotary brush 342 can be easily separated from the bottle 100, and the volume of the bottle 100 can be reduced.

Further, the first rotating brush 341 includes a first rotating shaft 347, the first rotating shaft 347 is disposed in a hollow manner, the first rotating shaft 347 and the second rotating shaft 348 are both connected to a rotating motor, the second rotating brush 342 includes a second rotating shaft 348, the second rotating shaft 348 is disposed in an inner cavity of the first rotating shaft 347, the first rotating shaft 347 and the second rotating shaft 348 are both connected to the hollow support tube 345 in a penetrating manner, and the first rotating shaft 347 and the second rotating shaft 348 are driven by the rotating motor to rotate at different speeds or in different directions.

Preferably, as shown in fig. 8 and 9, an induction contact 334 is arranged on the inner wall of the transmission track 33, the induction contact 334 is connected with a water quantity controller, the water supply part 2 includes a water inlet pipe 21, and the water quantity controller is respectively connected with the water inlet pipe 21 and the water jet 32; the water flow controller comprises a push rod 335, a return spring 336, a fixed baffle 337, a movable plug 338 and a pipe body 339, the pipe body 339 is provided with the movable plug 338 and is further connected with the water inlet pipe 21, the movable plug 338 is fixedly connected with the push rod 335, the fixed baffle 337 is arranged in the inner cavity of the pipe body 339, the push rod 335 penetrates through the fixed baffle 337, the return spring 336 is arranged on the periphery of the push rod 335, the return spring 336 is arranged on one side, away from the movable plug 338, of the fixed baffle 337, and the push rod 335 penetrates out of the pipe body 339 and is connected with the induction contact 334. Through the sensing contact 334 arranged on the transmission rail 33, the transmission rail 33 is provided with a plurality of sensing contacts 334, when the can bottle 100 does not pass through the sensing contacts 334, the water spraying port 32 at the sensing contacts 334 does not spray water for cleaning or sprays water with a small flow rate, when the can bottle 100 gradually passes through the sensing contacts 334, the outer wall of the can bottle 100 gradually touches and pushes the lower sensing contact 334, the movable plug 338 is pushed outwards, the water flow gradually increases into the water spraying port 32, when the can bottle 100 is fully pressed on the sensing contacts 334, the water flow reaches the maximum at the moment, the can bottle 100 can be fully sprayed and cleaned, when the can bottle 100 is moved away, the water flow gradually weakens, so that no vacancy or less water flow injection exists between the two can bottles 100, the water saving effect can be achieved, and the cleaning cost is reduced. In addition, the flow is adjusted by adopting a mechanical structure, and the risk that electronic equipment is easy to damage in a high-humidity environment is avoided.

Preferably, as shown in fig. 10, all be provided with the first beat that is located both sides on first indexing mechanism 31 and the second indexing mechanism 41 respectively and send a jar carousel 42 and a second beat to send a jar carousel 43, all evenly divide on first beat send a jar carousel 42 and the second beat send a jar carousel 43 and have a plurality of to be used for holding the chamber 421 that holds jar bottle 100, first beat send a jar carousel 42 and a second beat send a jar carousel 43 all with transmission track 33 is connected respectively, respectively fixedly connected with can poking manipulator 44 on first indexing mechanism 31, the second indexing mechanism 41 and the transmission track 33, can poking manipulator 44 send jar carousel 42 and a second beat to send the rotation cooperation of jar carousel 43 to stretch into along with first beat stir jar bottle 100 of stirring in holding the chamber 421 and remove. Furthermore, four accommodating chambers 421 are respectively arranged on the first beat can feeding turntable 42 and the second beat can feeding turntable 43. Through setting up first beat send a jar carousel 42 and a second beat to send a jar carousel 43 device, can make the jar bottle 100 that transmission track 33 sent get into earlier one by one and hold the chamber 421 in, dial into or dial out by dialling a jar manipulator 44 again, avoid the beat mistake to lead to too much jar bottle 100 to be conveyed to the indexing mechanism and the heap that arouses. After can bottle 100 gets into by transmission track 33 and holds, rotate indexing mechanism one side along with transmission track 33, be provided with on the indexing mechanism and dial a jar manipulator 44, after being close indexing mechanism from can bottle 100, dial a jar manipulator 44 and just stretch into can bottle 100 rear side gradually along with the rotation that the beat sent a jar carousel, the beat sends a jar carousel to continue to rotate, because the drive effect that blocks of dialling a jar manipulator 44, can bottle 100 is released to one side of indexing mechanism and falls on transmission dish 311 to change the moving direction along with transmission dish 311. If the beat is wrong in the running process and the conveying is too fast, the positions of the containing cavities 421 on the can conveying turntable at the beat are all filled, the can bottle 100 at the rear position cannot enter the indexing mechanism, and the stacking on the indexing mechanism cannot be caused, so that the beat at the subsequent step can be correctly adjusted.

Preferably, as shown in fig. 11, each of the second cleaning line 4 and the third cleaning line 5 is provided with a drainage brush 51, the drainage brush 51 comprises a handle 511 and a cleaning piston 512, the handle 511 is connected with the cleaning piston 512, a drainage channel 513 is formed in the handle 511 and the cleaning piston 512 in a penetrating manner, and a drainage channel 514 is connected outside the drainage channel located in the handle 511. When the tank 100 is washed by spraying water on the conveying track 33, water is gradually accumulated in the tank 100, when the tank 100 passes through the drainage brush 51, the conveying track 33 stops conveying, the drainage brush 51 descends to extend into the tank 100, and as the cleaning piston 512 descends, the water in the tank 100 is squeezed out from the drainage channel 513 under the action of pressure and is discharged by the drainage pipeline 514, so that the amount of water accumulated in the tank 100 can be gradually reduced; the cleaning piston 512 is further covered with a cleaning sponge 346, which can also brush the can 100 during the draining process.

The first beat can feeding rotary disc 42 and the second beat can feeding rotary disc 43 are both used for feeding or accommodating one can 100 every 8 seconds, and the time difference from the pause to the cleaning completion of the can 100 passing through the rotary cleaning device 34 and the drainage brush 51 is also 8 seconds, so that a whole set of matched beats can be formed.

Compared with the prior art, the rotary tank washing machine is arranged, so that the tank bottle 100 can be fully washed on a plurality of washing lines, and the cleaning degree and the washing efficiency of the tank bottle 100 are improved.

The above embodiments and drawings are not intended to limit the form and style of the product of the present invention, and any suitable changes or modifications thereof by one of ordinary skill in the art should be considered as not departing from the scope of the present invention.

Claims

1. A rotary tank washing machine is characterized by comprising a machine table, a water supply part, a first washing line, a second washing line, a third washing line, a first indexing mechanism and a second indexing mechanism, wherein the water supply part is arranged on the machine table, the water supply part is respectively connected with the first washing line, the second washing line and the third washing line, the first washing line, the second washing line and the third washing line are arranged on the machine table in parallel, the output end of the first washing line and the input end of the second washing line are arranged on the first indexing mechanism, and the output end of the second washing line and the input end of the third washing line are arranged on the second indexing mechanism;

a plurality of water spraying ports are formed on the first cleaning line, the second cleaning line and the third cleaning line respectively and are communicated with the water supply part respectively; the first cleaning line, the second cleaning line and the third cleaning line are respectively provided with a conveying track for advancing the cans and bottles, the conveying tracks are respectively connected with a second driving device, and the water spray ports are aligned to the conveying tracks;

the first cleaning line is provided with a plurality of rotary cleaning devices, each rotary cleaning device comprises a first rotary brush surrounding the outer wall of the can and a second rotary brush used for cleaning the inner wall of the can, the second rotary brush is arranged in an inner cavity of the first rotary brush, and an accommodating space for accommodating the side wall of the can is formed between the first rotary brush and the second rotary brush; the first rotating brush and the second rotating brush are not coaxially arranged, so that the first rotating brush and the second rotating brush rotate at different speeds or in different directions during rotating cleaning; air bags are respectively arranged in the first rotating brush and the second rotating brush, hollow supporting tubes are connected to the air bags in a through mode, and the hollow supporting tubes are externally connected with electric inflating pumps;

the inner wall of the transmission track is provided with an induction contact which is connected with a water quantity controller, the water supply part comprises a water inlet pipe, and the water quantity controller is respectively connected with the water inlet pipe and a water spraying opening; the water flow controller comprises a push rod, a return spring, a fixed baffle, a movable plug and a pipe body, wherein the movable plug is arranged on the pipe body, the position of the pipe body, where the movable plug is arranged, is also connected with the water inlet pipe, the movable plug is fixedly connected with the push rod, the fixed baffle is arranged in the inner cavity of the pipe body, the push rod penetrates through the fixed baffle, the return spring is arranged on the periphery of the push rod, the return spring is arranged on one side, away from the movable plug, of the fixed baffle, and the push rod penetrates out of the pipe body and is connected with the induction contact;

when the can does not pass through the induction contact, the water spraying port at the induction contact does not spray water for cleaning or sprays water with a small flow rate, when the can gradually passes through the induction contact, the outer wall of the can gradually touches and pushes the lower induction contact, the movable plug is pushed outwards, and water flow gradually increases and enters the water spraying port; when the can is positioned on the induction contact and is fully pressed, the water flow reaches the maximum; as the jar is removed, the water flow gradually diminishes.

2. A rotary can washing machine according to claim 1, wherein said first indexing means and said second indexing means each comprise a transfer disc and first drive means, said transfer disc being connected to said first drive means, said first indexing means being driven by said first drive means to rotate anticlockwise and said second indexing means being driven by said first drive means to rotate clockwise.

3. The spin washer according to claim 1, wherein the first indexing mechanism and the second indexing mechanism are respectively provided with a first beat can feeding turntable and a second beat can feeding turntable which are positioned at two sides, the first beat can feeding turntable and the second beat can feeding turntable are respectively and uniformly divided into a plurality of accommodating cavities for accommodating the cans, the first beat can feeding turntable and the second beat can feeding turntable are respectively connected with the transmission rail, and the first indexing mechanism, the second indexing mechanism and the transmission rail are respectively and fixedly connected with a can poking manipulator which stretches into the accommodating cavities to poke the cans to move along with the rotation matching of the first beat can feeding turntable and the second beat can feeding turntable.

4. The rotary washer tank machine as claimed in claim 1, wherein each of the second cleaning line and the third cleaning line is provided with a drain brush, the drain brush comprises a handle and a cleaning piston, the handle is connected with the cleaning piston, a drain passage is formed in the handle and the cleaning piston in a penetrating manner, and a drain pipe is connected outside the drain passage on the handle.