CN205575570U

CN205575570U - Automatic abluent novel invariable liquid level filling device

Info

Publication number: CN205575570U
Application number: CN201620205159.1U
Authority: CN
Inventors: 谢友林
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-17
Filing date: 2016-03-17
Publication date: 2016-09-14
Anticipated expiration: 2026-03-17

Abstract

The utility model discloses an automatic abluent novel invariable liquid level filling device, including end bucket, the top of end bucket is equipped with the bung with the axle center cover, and the bottom border of end bucket distributes and has many filling tubes, and the bung is equipped with the feed liquor pipe, and it is fixed with the stock solution device that the bung passes through the feed liquor pipe, and the bottom of end bucket is passed through rotation vertical shaft and is connected with the base rotation, and the bottom border of bung is fixed with the overflow launder, and the bung hole of end bucket outwards is equipped with the turn -ups, and turn down rims outside border lies in the notch within range of overflow launder, feed liquor pipe lateral wall is located below mouth of pipe department and is equipped with a plurality of liquid outlet through hole, and the bung hole within range that the bung bottom is located end bucket is fixed with annular retaining ring, be equipped with the scavenge pipe on the bung, the play water end (W. E. ) of scavenge pipe passes in the bung stretches into end bucket downwards, and the scavenge pipe delivery port spouts to end bucket lateral wall. By the utility model discloses the structure can be known, has guaranteed that the liquid medicine liquid level in the end bucket remains the bung hole height at end bucket throughout, and then has guaranteed that the velocity of flow in the filling tube keeps invariable, has improved the filling accuracy of medicine bottle.

Description

A kind of novel constant liquid level filling apparatus of automatic cleaning

Technical field

This utility model relates to fill field, is specifically related to the novel constant liquid level filling apparatus of a kind of automatic cleaning.

Background technology

In food pharmaceuticals industry, utilize filling apparatus that liquid is carried out fill to popularize very much, the top of filling apparatus is provided with feed tube, bottom just liquid is provided with many filling tubes, being respectively equipped with upper and lower two liquid level limit induction devices in filling apparatus, when liquid level arrives the liquid level limit induction device of bottom when, system controls feed tube feed liquor, when liquid level reaches the liquid level limit induction device on top when, system controls feed tube not feed liquor.In order to improve the fill efficiency of liquid, it is typically all and uses while fill, carry out the transmission of container, this is accomplished by the distributed about of filling apparatus many filling tubes, additionally the transmission track of container needs to match with the filling tube rotary motion trace of allotter, and the transfer rate of container is identical with the speed of filling tube, then by system control flow or time, the valve of filling tube is opened and closed.

But in actual production process, this liquid precision away from the filling apparatus fill of structure is the highest.Research through technical staff finds, it is not constant that problem goes out the liquid level at filling apparatus liquid, liquid level can change, in result in filling apparatus, liquid is different for the pressure of filling tube, and, the when that liquid adding, directly add facing to the liquid level of liquid in filling apparatus, owing to feed tube is, by pressure apparatus, the liquid in device for storing liquid is flowed into filling apparatus, so the liquid flowed into can produce the biggest fluctuation to the liquid levels in filling apparatus, the change of liquid level and the fluctuation of liquid level all can cause the flow velocity in filling tube highly unstable, so it is the highest to result in filling accuracy.Although the product-filled probability gone wrong is the highest, but owing to food pharmaceuticals industry is inspected by random samples for the product needed dispatched from the factory, once inspects out undesirable product by random samples, the product of whole batch all can not dispatch from the factory, and the loss causing enterprise is bigger.

It is, by pressure apparatus, the liquid in device for storing liquid is flowed into filling apparatus additionally, due to feed tube, and can be with gas in pressure apparatus, if the liquid bottom that the liquid outlet of feed tube is arranged in filling apparatus, can make have a large amount of gas to emerge in liquid in filling apparatus, the liquid level making liquid on the contrary is unstable.

In actual use, the when of changing different medicinal liquids or beverage in filling apparatus, in order to prevent different medicinal liquids or beverage from mixing, medicinal liquid or beverage after being required for being carried out filling apparatus, could be changed.Additionally, owing to the filling apparatus after cleaning inevitably remaining some water, so certain error will be produced for some medicinal liquids that distributing precision is the highest, in order to avoid this error, after enterprise can only will change medicinal liquid, the medicine bottle of initially fill is directly scrapped, in case being arrived by sampling observation.But so operation one waste beyond doubt.

Summary of the invention

The purpose of this utility model is: overcome the deficiencies in the prior art, the novel constant liquid level filling apparatus of a kind of automatic cleaning is provided, by keeping feed tube normally opened, end bucket is separated with bung, and when medicinal liquid overflow in the end bucket when, proceed by fill, thus the medicinal liquid liquid level in ensure that end bucket remains at the bung height of end bucket, and then ensure that the flow rate kept constant in filling tube, improve the filling accuracy of medicine bottle；By projection will be set in the middle part of the bottom of end bucket and tilts to direction, edge, thus further increase the difference in height between end bucket inner liquid medicine liquid level and filling tube, thus improve the flow velocity that medicinal liquid flows out from filling tube, improve fill efficiency；Being connected by cambered surface between the sidewall of end bucket and bottom, the bottom of end bucket is also globoidal structure so that do not have dead angle in end bucket, and in end bucket, the medicinal liquid of any position is all without being accumulated, it is ensured that the quality of liquid drug；The fluid through-hole that goes out of feed tube is located at the sidewall of feed tube, thus when medicinal liquid enters end bucket, reduces the fluctuation to the medicinal liquid liquid level in end bucket, make to improve the stability of filling tube flow velocity；Going out fluid through-hole is perpendicular strip structure, thus reduces medicinal liquid by going out pressure during fluid through-hole, it is to avoid medicinal liquid directly sprays end bucket scope and causes the waste of medicinal liquid；By the effect of return duct so that the medicinal liquid in overflow launder can enter device for storing liquid in time, and enters end bucket again by feed tube, it is to avoid liquid waste；Return duct is provided with viewing area, it is simple to the back-flow velocity in observation return duct, thus the liquid level situation in inferring overflow launder；End bucket flange stretches in overflow launder, the medicinal liquid being possible not only to ensure to go out from end bucket overflow fully enters overflow launder, it is to avoid liquid waste, can also be hedged off from the outer world by the bung of end bucket simultaneously, prevent outside air flowing from the liquid level of end bucket inner liquid medicine is produced impact, it is ensured that the stability of filling tube flow velocity；By the effect of respiratory organ so that the atmospheric pressure in annular retaining ring is always consistent with atmospheric pressure, after preventing end bucket upper air pressure change, affect the end bucket inner liquid medicine pressure for filling tube position, the flow velocity of filling tube is produced impact；By the effect of annular retaining ring, making the water fluid through-hole of feed tube spray to annular retaining ring, and annularly back-up ring surface is dropped in end bucket, the water that can stop feed tube directly sprays end bucket, it is to avoid waste；By the effect of annular retaining ring, the water going out fluid through-hole making feed tube sprays to annular retaining ring, and annularly back-up ring surface is dropped in end bucket, now, the liquid level being only positioned at annular retaining ring can produce minor fluctuations, liquid level outside annular retaining ring then will not fluctuate, it is ensured that the stability of filling tube flow velocity；By cleaning the effect of pipe, so that end bucket completes the cleaning of end bucket inwall on the premise of providing powered rotation without rotating vertical shaft, the when of facilitating filling apparatus to change different medicinal liquid, it is not necessary to dismounting bung just can carry out Rapid Cleaning to end bucket, improve cleaning efficiency, reduce energy consumption；By the effect of airduct, so that the end bucket inwall after cleaning is dried on the premise of provide powered rotation without rotating vertical shaft by end bucket, improves drying efficiency, reduce energy consumption, it is to avoid liquid waste.

Technical solution adopted in the utility model is:

A kind of novel constant liquid level filling apparatus of automatic cleaning, including end bucket, the top concentric of bucket of the described end is covered with bung, the bottom sides of bucket of the described end is along many piece filling tubes are distributed, described bung is provided with feed tube, described bung is fixed with device for storing liquid by feed tube, the bottom of bucket, the described end is rotationally connected with pedestal by rotating vertical shaft, the diameter of described bung is more than the diameter of end bucket, the bottom sides of bung is along being fixed with overflow launder, described overflow launder is loop configuration, and overflow launder is placed on the top of end bucket, the bung of bucket of the described end is to being externally provided with flange, in the range of the outer side edges edge of described flange is positioned at the notch of overflow launder, described filling tube is provided with valve；It is airtight and higher than the bung of end bucket that described feed tube is positioned at the mouth of pipe below bung, described feed tube sidewall be positioned at lower section the mouth of pipe at be provided with multiple go out fluid through-hole, described go out fluid through-hole be perpendicular strip structure, being fixed with annular retaining ring in the range of being positioned at the bung of end bucket bottom described bung, the bottom sides of described annular retaining ring is along the bung less than end bucket；Described bung is provided with cleaning pipe, and the water side of described cleaning pipe extends downwardly in end bucket through bung, and water is sprayed to the sidewall of end bucket by the outlet of described cleaning pipe water side.

The further improvement project of this utility model is, the lateral wall of described bung and overflow launder is respectively equipped with ring flange, and described ring flange is provided with the installing hole of coupling, installs bolt and is fixed with overflow launder by bung through installing hole.

This utility model further improvement project is, the cross section of described flange is arcuate structure, and the outer side edges of described flange is along extending downwardly in overflow launder.

This utility model further improvement project is, the outer side edges of described flange is along straight down.

This utility model further improvement project is, the bottom of bucket, the described end is connected by cambered surface with sidewall, and the bottom of bucket of the described end is globoidal structure, and the bottom centre of bucket raises up at the described end, and to bottom sides along tilting.

This utility model further improvement project is, the bottom of bucket of the described end is connected with the upper end of rotating vertical shaft by attachment means, described attachment means and the bottom mating of end bucket.

This utility model further improvement project is, described bung is globoidal structure, and described bung is downward-sloping to the direction at edge by center.

This utility model further improvement project is, the top sides of described annular retaining ring is along being fixed on bottom bung.

This utility model further improvement project is, the bottom connection of described overflow launder is provided with return duct, and described return duct connects with device for storing liquid.

This utility model further improvement project is that described return duct is provided with viewing area.

This utility model further improvement project is, described bung is provided with respiratory organ, and the space between end bucket and bung is connected by described respiratory organ with ambient atmosphere.

This utility model further improvement project is, described respiratory organ is positioned in the range of the surrounded region of annular retaining ring.

This utility model further improvement project is, the water outlet direction of the outlet of described cleaning pipe and end bucket are provided with included angle A through the direction, diameter place of over cleaning pipe, and described included angle A is acute angle.

This utility model further improvement project is, described bung is provided with airduct, and the outlet side of described airduct extends downwardly in end bucket through bung, and dry gas is sprayed to the sidewall of end bucket by the gas outlet of described airduct outlet side.

This utility model further improvement project is, the outgassing direction of the gas outlet of described airduct and end bucket are provided with included angle B through the direction, diameter place of airduct, and described included angle B is acute angle.

When this utility model uses, medicinal liquid in device for storing liquid enters in end bucket by feed tube, treat that the medicinal liquid in end bucket reaches the bung of end bucket and by flange to overflow launder is excessive when, rotating vertical shaft drives end bucket persistently to rotate, it is positioned at the medicine bottle of filling apparatus lower periphery of the present utility model under the effect of transporter simultaneously, together rotating with end bucket, the filling tube of bucket of the described end keeps geo-stationary with corresponding medicine bottle；Valve in filling tube controls to open and close by system, and when valve closing when, corresponding medicine bottle is placed exactly in the discharging opening of transporter；Additionally the medicinal liquid in overflow launder is flowed back in device for storing liquid by return duct.

The when that this utility model being carried out, feed tube is closed, keep filling tube to open, rotating vertical shaft is kept freely rotatable state simultaneously.Water is sprayed to the inwall of end bucket by the outlet first passing through cleaning pipe, owing to rotating vertical shaft keeps freely rotatable state, so while outlet sprays to the active force of the water of end bucket inwall, end bucket starts to rotate, and can be all carried out by the one of end bucket week inwall so that clean pipe；After cleaning pipe and completing to clean, by the gas outlet of airduct, dry air is sprayed to the inwall of end bucket again, also due to rotating vertical shaft keeps freely rotatable state, so while gas outlet sprays to the active force of the water of end bucket inwall, end bucket starts to rotate, and can all be dried up by the one of end bucket week inwall so that clean pipe.

The beneficial effects of the utility model are:

The first, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by keeping feed tube normally opened, end bucket is separated with bung, and when medicinal liquid overflow in the end bucket when, proceed by fill, thus the medicinal liquid liquid level in ensure that end bucket remains at the bung height of end bucket, and then ensure that the flow rate kept constant in filling tube, improve the filling accuracy of medicine bottle.

The second, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by projection will be set in the middle part of the bottom of end bucket and tilts to direction, edge, thus further increase the difference in height between end bucket inner liquid medicine liquid level and filling tube, thus improve the flow velocity that medicinal liquid flows out from filling tube, improve fill efficiency.

3rd, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, it is connected by cambered surface between the sidewall of end bucket and bottom, the bottom of end bucket is also globoidal structure, dead angle is not had in making end bucket, in end bucket, the medicinal liquid of any position is all without being accumulated, it is ensured that the quality of liquid drug.

4th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, the fluid through-hole that goes out of feed tube is located at the sidewall of feed tube, thus when medicinal liquid enters end bucket, reduce the fluctuation to the medicinal liquid liquid level in end bucket, make to improve the stability of filling tube flow velocity.

5th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, going out fluid through-hole is perpendicular strip structure, thus reduces medicinal liquid by going out pressure during fluid through-hole, it is to avoid medicinal liquid directly sprays end bucket scope and causes the waste of medicinal liquid.

6th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by the effect of return duct so that the medicinal liquid in overflow launder can enter device for storing liquid in time, and enters end bucket again by feed tube, it is to avoid liquid waste.

7th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, return duct is provided with viewing area, it is simple to the back-flow velocity in observation return duct, thus the liquid level situation in inferring overflow launder.

8th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, end bucket flange stretches in overflow launder, the medicinal liquid being possible not only to ensure to go out from end bucket overflow fully enters overflow launder, avoid liquid waste, the bung of end bucket can also be hedged off from the outer world simultaneously, prevent outside air flowing from the liquid level of end bucket inner liquid medicine is produced impact, it is ensured that the stability of filling tube flow velocity.

9th, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by the effect of respiratory organ, make the atmospheric pressure in annular retaining ring always consistent with atmospheric pressure, after preventing end bucket upper air pressure change, affect the end bucket inner liquid medicine pressure for filling tube position, the flow velocity of filling tube is produced impact.

Tenth, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by the effect of annular retaining ring, make the water fluid through-hole of feed tube spray to annular retaining ring, and annularly back-up ring surface is dropped in end bucket, the water that can stop feed tube directly sprays end bucket, it is to avoid waste.

11st, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by the effect of annular retaining ring, the water going out fluid through-hole making feed tube sprays to annular retaining ring, and annularly back-up ring surface is dropped in end bucket, now, the liquid level being only positioned at annular retaining ring can produce minor fluctuations, and the liquid level outside annular retaining ring then will not fluctuate, it is ensured that the stability of filling tube flow velocity.

12nd, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by cleaning the effect of pipe, so that end bucket completes the cleaning of end bucket inwall on the premise of providing powered rotation without rotating vertical shaft, the when of facilitating filling apparatus to change different medicinal liquid, just end bucket can be carried out Rapid Cleaning without dismantling bung, improve cleaning efficiency, reduce energy consumption.

13rd, the novel constant liquid level filling apparatus of a kind of automatic cleaning of the present utility model, by the effect of airduct, so that the end bucket inwall after cleaning is dried on the premise of provide powered rotation without rotating vertical shaft by end bucket, improve drying efficiency, reduce energy consumption, it is to avoid liquid waste.

Accompanying drawing explanation

Fig. 1 is that this utility model structure master regards cross-sectional schematic.

Detailed description of the invention

As shown in Figure 1, this utility model includes end bucket 1, the top concentric of bucket of the described end 1 is covered with bung 2, the bottom sides of bucket of the described end 1 is along many piece filling tubes 6 are distributed, described bung 2 is provided with feed tube 5, described bung 2 is fixed with device for storing liquid by feed tube 5, the bottom of bucket of the described end 1 is rotationally connected with pedestal 15 by rotating vertical shaft 4, the diameter of described bung 2 is more than the diameter of end bucket 1, the bottom sides of bung 2 is along being fixed with overflow launder 3, described overflow launder 3 is loop configuration, and overflow launder 3 is placed on the top of end bucket 1, the bung of bucket of the described end 1 is to being externally provided with flange 9, the outer side edges of described flange 9 is along the notch scope being positioned at overflow launder 3, described filling tube 6 is provided with valve；It is airtight and higher than the bung of end bucket 1 that described feed tube 5 is positioned at the mouth of pipe below bung 2, described feed tube 5 sidewall be positioned at lower section the mouth of pipe at be provided with multiple go out fluid through-hole 11, described go out fluid through-hole 11 be perpendicular strip structure, being fixed with annular retaining ring 16 in the range of being positioned at the bung of end bucket 1 bottom described bung 2, the bottom sides of described annular retaining ring 16 is along the bung less than end bucket 1；Described bung 2 is provided with cleaning pipe 17, and the water side of described cleaning pipe 17 extends downwardly in end bucket 1 through bung 2, and water is sprayed to the sidewall of end bucket 1 by the outlet 18 of described cleaning pipe 17 water side；The lateral wall of described bung 2 and overflow launder 3 is respectively equipped with ring flange 13, and described ring flange 13 is provided with the installing hole 14 of coupling, installs bolt and is fixed with overflow launder 3 by bung 2 through installing hole；The cross section of described flange 9 is arcuate structure, and the outer side edges of described flange 9 is along extending downwardly in overflow launder 3；The outer side edges of described flange 9 is along straight down；The bottom 10 of bucket of the described end 1 is connected by cambered surface with sidewall, and the bottom 10 of bucket of the described end 1 is globoidal structure, and the center, bottom 10 of bucket of the described end 1 raises up, and tilts to edge, bottom 10；The bottom 10 of bucket of the described end 1 is connected with the upper end of rotating vertical shaft 4 by attachment means 12, described attachment means 12 and the bottom mating of end bucket 1；Described bung 2 is globoidal structure, and described bung 2 is downward-sloping to the direction at edge by center；The top sides of described annular retaining ring 16 is along being fixed on bottom bung 2；The bottom connection of described overflow launder 3 is provided with return duct 7, and described return duct 7 connects with device for storing liquid；Described return duct 7 is provided with viewing area；Described bung 2 is provided with respiratory organ 8, and the space between end bucket 1 with bung 2 is connected by described respiratory organ 8 with ambient atmosphere；Described respiratory organ 8 is positioned in the range of the surrounded region of annular retaining ring 16；The water outlet direction of the outlet 18 of described cleaning pipe 17 and end bucket 1 are provided with included angle A through the direction, diameter place of over cleaning pipe 17, and described included angle A is acute angle；Described bung 2 is provided with airduct 19, and the outlet side of described airduct 19 extends downwardly in end bucket 1 through bung 2, and dry gas is sprayed to the sidewall of end bucket 1 by the gas outlet 20 of described airduct 19 outlet side；The outgassing direction of the gas outlet 20 of described airduct 19 and end bucket 1 are provided with included angle B through the direction, diameter place of airduct 19, and described included angle B is acute angle.

Claims

null1. the novel constant liquid level filling apparatus of an automatic cleaning，It is characterized in that: include end bucket (1)，The top concentric at bucket of the described end (1) is covered with bung (2)，The bottom sides at bucket of the described end (1) is along many piece filling tubes (6) are distributed，Described bung (2) is provided with feed tube (5)，Described bung (2) is fixed with device for storing liquid by feed tube (5)，The bottom at bucket of the described end (1) is rotationally connected with pedestal (15) by rotating vertical shaft (4)，The diameter of described bung (2) is more than the diameter of end bucket (1)，The bottom sides of bung (2) is along being fixed with overflow launder (3)，Described overflow launder (3) is loop configuration，And overflow launder (3) is placed on the top of end bucket (1)，The bung at bucket of the described end (1) is to being externally provided with flange (9)，In the range of the outer side edges edge of described flange (9) is positioned at the notch of overflow launder (3)，Described filling tube (6) is provided with valve；It is airtight and higher than the bung of end bucket (1) that described feed tube (5) is positioned at the mouth of pipe of bung (2) lower section, described feed tube (5) sidewall be positioned at lower section the mouth of pipe at be provided with multiple go out fluid through-hole (11), described go out fluid through-hole (11) be perpendicular strip structure, being fixed with annular retaining ring (16) in the range of being positioned at the bung of end bucket (1) bottom described bung (2), the bottom sides of described annular retaining ring (16) is along the bung less than end bucket (1)；Described bung (2) is provided with cleaning pipe (17), and in the described water side cleaning pipe (17) extends downwardly into end bucket (1) through bung (2), water is sprayed to the sidewall of end bucket (1) by the described outlet (18) cleaning pipe (17) water side.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: the lateral wall of described bung (2) and overflow launder (3) is respectively equipped with ring flange (13), described ring flange (13) is provided with the installing hole (14) of coupling, installs bolt and is fixed with overflow launder (3) by bung (2) through installing hole.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterised in that: the cross section of described flange (9) is arcuate structure, and the outer side edges of described flange (9) is along extending downwardly in overflow launder (3)；The outer side edges of described flange (9) is along straight down.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: the bottom (10) at bucket of the described end (1) is connected by cambered surface with sidewall, the bottom (10) at bucket of the described end (1) is globoidal structure, bottom (10) center at bucket of the described end (1) raises up, and tilts to bottom (10) edge.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: the bottom (10) at bucket of the described end (1) is connected with the upper end of rotating vertical shaft (4) by attachment means (12), described attachment means (12) and the bottom mating of end bucket (1).
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterised in that: described bung (2) is globoidal structure, and described bung (2) is downward-sloping to the direction at edge by center；The top sides of described annular retaining ring (16) is along being fixed on bung (2) bottom.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: the bottom connection of described overflow launder (3) is provided with return duct (7), described return duct (7) connects with device for storing liquid, described bung (2) is provided with respiratory organ (8), and the space between end bucket (1) with bung (2) is connected by described respiratory organ (8) with ambient atmosphere；Described respiratory organ (8) is positioned in the range of annular retaining ring (16) surrounded region.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: the water outlet direction of the described outlet (18) cleaning pipe (17) is provided with included angle A with end bucket (1) through the direction, diameter place of over cleaning pipe (17), and described included angle A is acute angle.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 1, it is characterized in that: described bung (2) is provided with airduct (19), in the outlet side of described airduct (19) extends downwardly into end bucket (1) through bung (2), dry gas is sprayed to the sidewall of end bucket (1) by the gas outlet (20) of described airduct (19) outlet side.
The novel constant liquid level filling apparatus of a kind of automatic cleaning the most as claimed in claim 9, it is characterized in that: the outgassing direction of the gas outlet (20) of described airduct (19) and end bucket (1) are provided with included angle B through the direction, diameter place of airduct (19), and described included angle B is acute angle.