CN215610654U

CN215610654U - Air blowing device for main shaft of mixing machine

Info

Publication number: CN215610654U
Application number: CN202121762398.4U
Authority: CN
Inventors: 王学亮
Original assignee: Shanghai Yanan Pharm Co ltd
Current assignee: Shanghai Yanan Pharm Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-25
Anticipated expiration: 2031-07-30

Abstract

The utility model provides a blowing device for a main shaft of a mixer, which comprises a stirring main shaft and a shaft sleeve, wherein two ends of the stirring main shaft are rotatably arranged on the side wall of the mixer through the shaft sleeve; the air inlet has all been seted up on the axle sleeve, and the gas outlet has all been seted up on the spiral sleeve, has seted up airflow channel in the stirring main shaft, and airflow channel intercommunication air inlet and gas outlet are formed with the clearance that the air feed body passes through between spiral sleeve and the stirring main shaft, and the clearance between spiral sleeve and the stirring main shaft also communicates with the air inlet, and air inlet and air supply intercommunication. Through the cooperation of air inlet, airflow channel, gas outlet and the clearance four between spiral sleeve and the stirring main shaft, make compressed air blow in stirring main shaft surface, help reducing the material and crowded the condition emergence between stirring main shaft and the axle sleeve, and then help just reducing the medicine and polluted, improved the quality.

Description

Air blowing device for main shaft of mixing machine

Technical Field

The utility model relates to the technical field of structural design of mixing machines, in particular to a blowing device for a main shaft of a mixing machine.

Background

The trough mixer is used for mixing powdery or pasty materials to uniformly mix heterogeneous materials. The horizontal groove-shaped single-paddle mixing device is convenient to clean, and the stirring paddle is of a through shaft type. The contact part with the object is made of stainless steel, so that the mixing tank has good corrosion resistance, and the mixing tank can automatically turn over and pour materials.

The prior chinese patent with publication number CN204710152U discloses a trough mixer, which comprises a tipping bucket, a rotating shaft is arranged in the tipping bucket, the rotating shaft is provided with four rows of stirring paddles along the axial direction thereof, the four rows of stirring paddles are uniformly distributed along the circumferential direction of the rotating shaft, the four rows of stirring paddles comprise two main rows of paddles and two auxiliary rows of paddles, the main rows of paddles are arranged with the auxiliary rows of paddles in a staggered manner, the main rows of paddles comprise four uniformly distributed main paddles, the auxiliary rows of paddles comprise two auxiliary paddles, wherein the paddle surfaces of the two main paddles close to one end of the rotating shaft and the paddle surfaces of the two main paddles close to the other end of the rotating shaft are arranged in opposite directions, and the paddle surfaces of the two paddles of the auxiliary rows of paddles are arranged in opposite directions.

The inventor thinks that in the prior art, the mixing force of the stirring slurry of the trough type mixer is large, and the material in the trough is extruded and rolled in the stirring process and is easily extruded into the gap between the shaft sleeve and the shaft. The material which is strongly extruded and rubbed by the shaft sleeve and the shaft is in a metal black color. The stirring time is long, so that the risk of stirring the main shaft to disturb and fall back into the material groove of the guide equipment exists, the medicine is polluted, and the product quality is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the drawbacks of the prior art, it is an object of the present invention to provide a blowing device for a main shaft of a mixing machine.

The air blowing device for the main shaft of the mixing machine comprises a stirring main shaft and a shaft sleeve, wherein two ends of the stirring main shaft are rotatably arranged on the side wall of the mixing machine through the shaft sleeve; the air inlet has all been seted up on the axle sleeve, the gas outlet has all been seted up on the spiral sleeve, airflow channel has been seted up in the stirring main shaft, airflow channel intercommunication air inlet and gas outlet, be formed with the clearance that the air feed body passes through between spiral sleeve and the stirring main shaft, clearance between spiral sleeve and the stirring main shaft also communicates with the air inlet, just air inlet and air supply intercommunication.

Preferably, a gland is fixedly installed on one side, close to the cavity of the mixing machine, of the shaft sleeve, the stirring main shaft penetrates through the gland and is in running fit with the gland, and the gland is in contact fit with a spiral sleeve close to the gland.

Preferably, a sealing ring is arranged between the spiral sleeve and the stirring main shaft, the sealing ring comprises a tetrafluoro sealing ring, and a gap is formed between the tetrafluoro sealing ring and the stirring main shaft.

Preferably, the air inlet is in communication with an air source via a compressed air connection.

Preferably, a pressure reducing valve and a compressed air filter are arranged between the air inlet and the air source.

Preferably, the stirring paddle is spirally wound with the stirring main shaft.

Preferably, a sealing plug is arranged at the end part of the airflow channel close to the stirring main shaft.

Preferably, a sealing washer is arranged between the stirring main shaft and the shaft sleeve, and the sealing washer is arranged on one side, away from the gland, of the shaft sleeve.

The utility model provides a mixing machine, which comprises an air blowing device of a main shaft of the mixing machine as claimed in any one of claims 1 to 8, wherein a cover for closing a cavity of the mixing machine is arranged on the mixing machine, and a respirator is arranged on the cover.

Preferably, the respirator is wrapped with gauze or a filter screen at the air port in the mixer cavity.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the cooperation of the air inlet arranged on the shaft sleeve, the airflow channel arranged on the stirring main shaft, the air outlet arranged on the spiral sleeve and the gap between the spiral sleeve and the stirring main shaft, compressed air enters the airflow channel from the air inlet, then is blown to the outer surface of the stirring main shaft, and then is exhausted through the air outlet and the gap between the spiral sleeve and the stirring main shaft, so that the occurrence of the situation that materials are squeezed between the stirring main shaft and the shaft sleeve is favorably reduced, further, the pollution of medicines is favorably reduced, and the quality is improved;

2. the air flow is controlled by adjusting the pressure of the compressed air through the pressure reducing valve, so that a proper amount of clean compressed air with matched pressure is provided for the air inlet, and the working efficiency of the air blowing device is improved;

3. the utility model discharges the gas in the cavity of the mixing machine through the matching of the respirator and the gauze, and is beneficial to reducing the occurrence of the situation that the powder leaks and flies in the production process.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the overall structure of a main stirring shaft according to the present invention;

FIG. 2 is a schematic sectional view of the overall structure of a stirring spindle according to the present invention;

FIG. 3 is an external view schematically showing the overall structure of the mixer according to the present invention.

Reference numerals:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

As shown in figure 1, the air blowing device for the main shaft of the mixer provided by the utility model comprises a stirring main shaft 2 and a shaft sleeve 4, wherein two ends of the stirring main shaft 2 are respectively and rotatably arranged on the side walls of two sides of a cavity of the mixer through the shaft sleeve 4, and the stirring main shaft 2 is horizontally arranged. Install stirring rake 8 on stirring main shaft 2, stirring rake 8 is the heliciform around establishing stirring main shaft 2, and the equal integrated into one piece in both ends of stirring rake 8 has screw sleeve 6, and two screw sleeve 6 are all established on stirring main shaft 2 with axle sleeve 4.

As shown in fig. 1 and 2, air inlets 9 have been provided on the two shaft sleeves 4, air outlets 10 have been provided on the two spiral sleeves 6, airflow channels 11 have been provided at both ends of the stirring main shaft 2, and a gap has been formed between the two spiral sleeves 6 and the stirring main shaft 2. The air inlet 9 and the air outlet 10 which are positioned at the same end of the stirring main shaft 2 are communicated by the air flow channels 11 which are arranged at the two ends of the stirring main shaft 2, and gaps are formed among the air inlet 9, the spiral sleeve 6 and the stirring main shaft 2 and communicated by the air flow channels 11.

Compressed air enters the airflow channel 11 from the air inlet 9, and is blown into the surface of the stirring main shaft 2 through the airflow channel 11, so that the compressed air can be exhausted through the air outlet 10, the spiral sleeve 6 and the gap between the stirring main shaft 2, and further, materials can be prevented from entering between the stirring main shaft 2 and the shaft sleeve 4 in the stirring process, and the materials are prevented from being polluted.

One side of each shaft sleeve 4 close to the mixing machine cavity is provided with a gland 5 in a fastening mode through bolts, and the stirring main shaft 2 penetrates through the two glands 5 and is in running fit with the glands respectively. The spiral sleeves 6 at the two ends of the stirring paddle 8 are respectively in contact fit with the close gland 5, so that the matching parts of the stirring main shaft 2 and the shaft sleeve 4 are sealed, and the situation that materials enter between the stirring main shaft 2 and the shaft sleeve 4 can be reduced.

As shown in fig. 1 and 2, a sealing ring is provided between the spiral sleeve 6 and the stirring main shaft 2, the sealing ring is a tetrafluoro sealing ring 7, and a gap is formed between the tetrafluoro sealing ring 7 and the stirring main shaft 2. Compressed air is allowed to pass through but materials are not allowed to pass through by virtue of a gap formed between the PTFE seal ring 7 and the stirring main shaft 2, so that the phenomenon that the materials enter between the stirring main shaft 2 and the shaft sleeve 4 is further reduced. All install seal ring 3 between stirring main shaft 2 and two axle sleeves 4, seal ring 3 installs the one side that deviates from gland 5 at axle sleeve 4.

The two airflow channels 11 are provided with sealing plugs 1 at positions close to the end of the stirring main shaft 2, so that the compressed gas entering the airflow channels 11 through the gas inlet 9 can enter the surface of the stirring main shaft 2 along the airflow channels 11 and be discharged from the gas outlet 10 or the gap between the tetrafluoro sealing ring 7 and the stirring main shaft 2.

Two air inlets 9 all fastening connection have compressed air to connect, and compressed air connects through trachea and air supply intercommunication, all has relief pressure valve and compressed air filter through the trachea intercommunication between two compressed air connects and the air supply. The filter filters oil and water from the compressed air discharged from the air source. The air flow is controlled by adjusting the pressure of the compressed air through the pressure reducing valve, so that in the whole mixing and stirring process, clean compressed air with proper matching pressure flows out from the gap between the tetrafluoro sealing gasket and the rotating shaft, the material is prevented from entering the gap between the shaft and the shaft sleeve 4, and the problem of material pollution is solved.

As shown in figure 3, the mixing machine provided by the utility model comprises the air blowing device for the main shaft of the mixing machine, wherein the mixing machine is hinged with a cover 12, and the cover 12 can close or open the cavity of the mixing machine. The closing cover 12 is provided with a respirator 13, and the air port of the respirator 13 positioned in the cavity of the mixing machine is wrapped with gauze or a filter screen. Thereby can guarantee that the compressed air who gets into in the mixer cavity discharges through respirator 13, and avoided equipment production in-process material powder to leak, the condition emergence that the powder flies upward.

Principle of operation

In operation, compressed gas from a source passes through a compressed air filter, a pressure relief valve and a compressed air connection. The air flow is controlled by adjusting the pressure of the compressed air through the pressure reducing valve, so that in the whole mixing and stirring process, clean compressed air with proper matching pressure flows out from the gap between the tetrafluoro sealing gasket and the rotating shaft, the material is prevented from entering the gap between the shaft and the shaft sleeve 4, and the problem of material pollution is solved. Meanwhile, a respirator 13 is additionally arranged on the sealing cover 12 of the groove-shaped mixing machine, and clean gauze is sleeved on the sealing cover, so that the compressed air entering the equipment is discharged, and the condition that powder leaks out and flies in the production process of the equipment is avoided.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those 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 constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The blowing device for the main shaft of the mixing machine is characterized by comprising a stirring main shaft (2) and a shaft sleeve (4), wherein two ends of the stirring main shaft (2) are rotatably arranged on the side wall of the mixing machine through the shaft sleeve (4), a stirring paddle (8) is arranged on the stirring main shaft (2), and a spiral sleeve (6) is connected between the stirring paddle (8) and the stirring main shaft (2); air inlet (9) have all been seted up on axle sleeve (4), gas outlet (10) have all been seted up on spiral shell (6), airflow channel (11) have been seted up in stirring main shaft (2), airflow channel (11) intercommunication air inlet (9) and gas outlet (10), be formed with the clearance that the air feed body passes through between spiral shell (6) and stirring main shaft (2), clearance between spiral shell (6) and stirring main shaft (2) also communicates with air inlet (9), just air inlet (9) and air supply intercommunication.

2. Air blowing device for the main shaft of a mixer machine according to claim 1 characterised in that the side of the sleeve (4) close to the mixer body is tightly fitted with a gland (5), the stirring main shaft (2) passes through the gland (5) and is in rotating fit with it, the gland (5) is in contact fit with a screw sleeve (6) close to the gland (5).

3. The blowing device for the mixer spindle according to claim 1, characterized in that a sealing ring is arranged between the screw sleeve (6) and the stirring spindle (2), the sealing ring comprises a tetrafluoro sealing ring (7), and a gap is formed between the tetrafluoro sealing ring (7) and the stirring spindle (2).

4. Blowing device for the main shaft of a mixing machine according to claim 1, characterised in that said air inlet (9) is in communication with an air source through a compressed air connection.

5. Blowing device for mixer spindles according to claim 1, characterized in that a pressure relief valve and a compressed air filter are provided between the air inlet (9) and the air source.

6. Blowing device for the main shaft of a mixing machine according to claim 1, characterised in that the stirring blade (8) is helically wound around the stirring main shaft (2).

7. Blowing device for mixer spindles according to claim 1, characterised in that the end of the air channel (11) close to the stirring spindle (2) is provided with a sealing plug (1).

8. Air blowing device for a mixer spindle according to claim 1, characterised in that a sealing gasket (3) is arranged between the stirring spindle (2) and the sleeve (4), said sealing gasket (3) being arranged on the side of the sleeve (4) facing away from the gland (5).

9. A mixing machine, characterized in that it comprises blowing means of the main shaft of a mixing machine according to any one of claims 1 to 8, said mixing machine being provided with a cover (12) for closing the cavity of the mixing machine, said cover (12) being provided with a breather (13).

10. A mixer according to claim 9, characterised in that the respirator (13) is wrapped with gauze or mesh at the air opening in the mixer cavity.