CN211811841U - A high-sealing star discharger - Google Patents

Abstract

The utility model discloses a star type tripper of high leakproofness, including the casing, be equipped with in the casing and revolute shaft pivoted rotor impeller, the outside cover of pivot is equipped with the axle sleeve, and the both sides of casing respectively are equipped with rotor support lid, sealed packing gland and sealed packing, and wherein, the rotor supports the lid and fixes on the casing, and sealed packing cover is established on the axle sleeve, and sealed packing gland passes the axle sleeve and is close to rotor impeller's one end and sealed packing contact, and the both sides of casing still respectively are equipped with an adjustable welt, adjustable welt cover is established on sealed packing and its outer border and the inner wall sealing contact of casing, and adjustable welt is located between rotor support lid and the rotor impeller and can support the rotor and support the axial displacement along rotor impeller in the clearance between lid and the rotor impeller. The utility model discloses an unloader can be applicable to the material of different granule sizes and unload, has effectively controlled the powder condition that leaks, has promoted the precision and the lock wind effect of unloader unloading volume.

Description

A high-sealing star discharger

technical field

The utility model relates to an unloader, in particular to a star-shaped unloader with high sealing performance.

Background technique

The star unloader is also called a rotary feeder. The star unloader consists of a rotor impeller with several blades, a casing, a reducer and a seal. It is mainly installed in the ash hopper of the dust collector, and is also widely used in the unloading device of the feeding and unloading system in the chemical industry, metallurgy, mining, machinery, electric power, grain and other industries. It has the advantages of simple structure, convenient use, easy operation, stable operation, low power consumption, low noise and long service life. However, it also has disadvantages such as leakage of powder and pollution. After the star-shaped unloader is used for a period of time, due to the continuous rotation of the rotor, the powder will leak from the internal gap of the unloader. Because the powder is a particulate matter, the packing used for sealing will be worn during the operation of the equipment, resulting in powder leakage. The internal structure of a common star unloader is shown in Figure 1. When the unloader runs for a long time, the powder will flow toward the sealing packing 5 in the direction of the arrow at the A position shown in Figure 1, resulting in powder leakage. Due to the excessive clearance between the rotor support cover 3 and the rotor impeller 2 in FIG. 1 , the adjustment cannot be performed. In actual operation, the maintenance personnel should regularly press the sealing packing gland 4 according to the powder leakage situation. When the internal powder pressure is too large, the material discharge is seriously uncontrollable, and accurate measurement cannot be achieved.

Utility model content

In order to overcome the deficiencies of the above technologies, the utility model provides a star-shaped discharger with high sealing performance.

The technical scheme adopted by the utility model to overcome its technical problems is:

A high-sealing star-shaped unloader, comprising a casing, a rotor impeller rotating around a rotating shaft is arranged in the casing, a shaft sleeve is sleeved on the outside of the rotating shaft, and a rotor support cover and a sealing disc are arranged on both sides of the casing. A root gland and a sealing packing, wherein the rotor support cover is fixed on the casing, the sealing packing is sleeved on the shaft sleeve, and the sealing packing gland passes through the shaft sleeve and is in contact with the sealing packing at one end close to the rotor impeller, There is also an adjustable lining plate on both sides of the casing. The adjustable lining plate is sleeved on the sealing packing and its outer edge is in sealing contact with the inner wall of the casing. The adjustable lining plate is located between the rotor support cover and the rotor impeller. and can move in the axial direction of the rotor impeller in the gap between the rotor support cover and the rotor impeller.

Further, each rotor support cover is provided with at least one clearance adjustment bolt, one end of the clearance adjustment bolt passes through the rotor support cover and is fixedly connected to the adjustable lining plate, and the other end of the clearance adjustment bolt is adjusted by adjusting the clearance adjustment bolt. It moves in the rotor support cover to drive the adjustable lining plate to move in the axial direction of the rotor impeller.

Further, each rotor support cover is provided with at least two clearance adjustment bolts, and the at least two clearance adjustment bolts are evenly distributed around the circumferential direction of the rotor support cover; further, preferably, each rotor support cover is provided with three Clearance adjustment bolt.

Further, one end of the sealing packing close to the rotor impeller is in sealing contact with the rotor impeller to prevent the powder from flowing between the sealing packing and the shaft sleeve.

Further, the contact surface of the sealing packing and the adjustable lining plate is an inclined surface and is set as the inclined surface 1, and the surface of the adjustable lining plate in contact with the sealing packing is also an inclined surface and is set as the inclined surface 2, The first inclined surface and the second inclined surface have the same inclination angle but opposite directions. Designing the contact surface of the sealing packing and the adjustable lining plate as an inclined surface can make the sealing effect between the sealing packing and the rotor impeller better.

Further, the diameter of the end of the sealing packing close to the rotor impeller is smaller than the diameter of the end away from the rotor impeller. The small diameter end of the sealing packing is in sealing contact with the rotor impeller, which can not only ensure the tightness between the sealing packing and the rotor impeller, but also will not cause too much friction between the sealing packing and the rotor impeller.

Further, a discharge chute is arranged on the lower inner wall of each adjustable lining plate, because although a large part of the material of the improved discharger of the present invention will be discharged through the rotor impeller, there may still be a very small amount of material. The powder will flow down along the gap between the adjustable lining plate and the rotor impeller, so a discharge chute is provided, so that the extremely small powder flows into the equipment below the unloader along the discharge chute.

Further, the discharge chute is fan-shaped, and the arc length corresponding to the fan-shaped is 1/8-1/4 of the circumference of the adjustable liner, more preferably 1/6.

Further, a sealing ring is provided on the outer edge of each adjustable lining plate to prevent powder from flowing out of the gap of the casing.

The beneficial effects of the present utility model are:

By adding an adjustable lining plate between the rotor support cover and the rotor impeller, the unloader of the utility model can adjust the gap between the adjustable lining plate and the rotor impeller, and can be suitable for discharging materials with different particle sizes. Effectively control the leakage of powder, improve the accuracy of the unloader and the air lock effect.

Description of drawings

FIG. 1 is a schematic diagram of the internal structure of a conventional star discharger.

FIG. 2 is a schematic diagram of the internal structure of the star discharger according to the embodiment of the present utility model.

FIG. 3 is a schematic front view of the structure of the adjustable liner according to the embodiment of the present utility model.

In the figure, 1. Shell, 2. Rotor impeller, 3. Rotor support cover, 4. Sealing packing gland, 5. Sealing packing, 6. Rotating shaft, 7. Shaft sleeve, 8. Adjustable liner, 9 , Clearance adjustment bolt, 10, discharge chute, 11, sealing ring.

Detailed ways

In order to facilitate those skilled in the art to better understand the present utility model, the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1, a high-sealing star discharger includes a casing 1, and a rotor impeller 2 is arranged in the casing to rotate around a rotating shaft 6. The rotating shaft 6 is driven to rotate by a reducer, and the outside of the rotating shaft 6 The sleeve is provided with a shaft sleeve 7, and the two sides of the casing are respectively provided with a rotor support cover 3, a sealing packing gland 4 and a sealing packing 5, wherein the rotor supporting cover 3 is fixed on the casing 1, and there are 5 sets of sealing packings. Set on the shaft sleeve 7 , the sealing packing gland 4 passes through the shaft sleeve 7 and is in contact with the sealing packing 5 at one end close to the rotor impeller 2 .

The biggest improvement of this embodiment is that, as shown in FIG. 2 , an adjustable lining plate 8 is provided on both sides of the casing, and the structure of the rotor support cover 3 , the sealing packing gland 4 and the sealing packing 5 is There are changes; wherein, the adjustable lining plate 8 is annular, the adjustable lining plate 8 is sleeved on the sealing packing 5 and its outer edge is in sealing contact with the inner wall of the housing 1, and the adjustable lining plate 8 is located at Between the rotor support cover 3 and the rotor impeller 2 and can move along the axial direction of the rotor impeller 2 in the gap between the rotor support cover 3 and the rotor impeller 2, so as to adjust the adjustable lining plate 8 and the rotor impeller 2 according to the size of the material particles In the prior art, the rotor support cover 3 is annular as a whole and is in contact with the sealing packing 5. After the improvement, the diameter of the circular hole in the center of the rotor supporting cover 3 increases, and is no longer connected to the sealing packing 5. touch.

In this embodiment, each rotor support cover 3 is provided with at least one clearance adjustment bolt 9, through which the clearance between the adjustable lining plate 8 and the rotor impeller 2 is adjusted. Further, each rotor support cover 3 is provided with at least two clearance adjusting bolts 9 . In this embodiment, preferably, each rotor support cover 3 is provided with three clearance adjusting bolts 9 , and the three clearance adjusting bolts 9 are evenly distributed around the circumferential direction of the rotor support cover 3 . distribution, one end of the clearance adjusting bolt 9 passes through the rotor support cover 3 and is fixedly connected to the adjustable lining plate 8 .

In this embodiment, preferably, one end of the sealing packing 5 close to the rotor impeller 2 is in sealing contact with the rotor impeller 2, and appropriate clearance can be adjusted during assembly or normal operation; wherein, the sealing packing 5 is fixed The rotor impeller 2 rotates under the driving of the rotating shaft 6 , that is, the sealing packing 5 and the rotor impeller 2 are in frictional contact, so as to prevent the powder from flowing between the sealing packing 5 and the shaft sleeve 7 .

In this embodiment, preferably, the surface of the sealing packing 5 in contact with the adjustable lining plate 8 is an inclined surface and is set as the inclined surface 1, and the surface of the adjustable lining plate 8 in contact with the sealing packing 5 is also an inclined surface and Suppose it is inclined surface 2, the inclined surface 1 and the inclined surface 2 have the same inclination angle but opposite directions; further, the diameter of the end of the sealing packing 5 close to the rotor impeller 2 is smaller than the diameter of the end away from the rotor impeller 2 .

Further preferably, a discharge chute 10 is provided on the lower inner wall of each adjustable lining plate 8, preferably the discharge chute 10 is located at the lower part of the adjustable lining plate 8, as shown in Figures 2 and 3; further, the said The discharge chute 10 is fan-shaped, and the arc length corresponding to the fan-shaped is 1/8-1/4 of the circumference of the adjustable lining plate 8 , preferably 1/6 in this embodiment.

Further preferably, a sealing ring 11 is provided on the outer edge of each adjustable lining plate 8, and preferably the sealing ring is an O-shaped sealing ring.

The working principle of the high-tightness star discharger described in this embodiment:

According to the size of the material particles, the gap between the adjustable lining plate 8 and the rotor impeller 2 is adjusted through the gap adjustment bolt 9. For example, the finer powder gap is adjusted to be about 0.5mm or less, so that the rotation of the rotor impeller 2 will not be affected. It can also prevent powder particles larger than 0.5mm from entering the gap between the adjustable lining plate 8 and the rotor impeller 2, so that a large part of the material is discharged through the rotor impeller 2, but there may still be a very small part of the powder along the 0.5 mm. The gap of mm flows down, and the powder flowing down along the gap flows into the equipment below the unloader through the discharge chute 10. The unloader described in this embodiment can effectively control the leakage of powder, and improve the accuracy of the unloader's feeding amount; and when the improved unloader is used in a dust collector or a pipeline of negative pressure equipment, it can lock the air. The effect is greatly improved.

The above only describes the basic principles and preferred embodiments of the present invention, and those skilled in the art can make many changes and improvements based on the above description, and these changes and improvements should belong to the protection scope of the present invention.

Claims (9)

1. A high-sealing star discharger, comprising a casing (1), a rotor impeller (2) rotating around a rotating shaft (6) is arranged in the casing, and a shaft sleeve ( 7), the two sides of the casing are provided with a rotor support cover (3), a sealing packing gland (4) and a sealing packing (5), wherein the rotor support cover (3) is fixed on the casing (1) , the sealing packing (5) is sleeved on the shaft sleeve (7), and the sealing packing gland (4) passes through the shaft sleeve (7) and is in contact with the sealing packing (5) at one end close to the rotor impeller (2), It is characterized in that an adjustable lining plate (8) is provided on both sides of the casing, and the adjustable lining plate (8) is sleeved on the sealing packing (5) and its outer edge is in contact with the casing (1). ), the adjustable lining plate (8) is located between the rotor support cover (3) and the rotor impeller (2) and can move along the rotor in the gap between the rotor support cover (3) and the rotor impeller (2). Axial movement of the impeller (2). 2. The high-tightness star discharger according to claim 1, characterized in that, each rotor support cover (3) is provided with at least one clearance adjusting bolt (9), the clearance adjusting bolt (9) ) passes through the rotor support cover (3) and is fixedly connected to the adjustable lining plate (8). 3. The high-tightness star discharger according to claim 2, characterized in that, each rotor support cover (3) is provided with at least two clearance adjustment bolts (9), the at least two clearance adjustment bolts The bolts (9) are evenly distributed around the circumference of the rotor support cover (3). The high-tightness star discharger according to claim 1, characterized in that, one end of the sealing packing (5) close to the rotor impeller (2) is in sealing contact with the rotor impeller (2). 5. The high-sealing star discharger according to claim 1, characterized in that, the contact surface of the sealing packing (5) and the adjustable lining plate (8) is an inclined surface and is set to be inclined Face 1. The face of the adjustable lining plate (8) in contact with the sealing packing (5) is also an inclined face and is set as the inclined face 2. The inclined face 1 and the inclined face 2 have the same inclination angle but opposite directions. The high-tightness star discharger according to claim 5, characterized in that, the diameter of the end of the sealing packing (5) close to the rotor impeller (2) is smaller than the diameter of the end away from the rotor impeller (2). . 7. The high-tightness star discharger according to claim 1, characterized in that, a discharge chute (10) is provided on the lower inner wall of each adjustable lining plate (8). 8. The high-tightness star discharger according to claim 7, characterized in that the discharge chute (10) is fan-shaped, and the arc length corresponding to the fan-shaped is an adjustable liner (8) 1/8-1/4 of the circumference of the circle. 9. The high-tightness star discharger according to claim 1, characterized in that, a sealing ring (11) is provided on the outer edge of each adjustable lining plate (8).

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