Impeller sealing structure of rotary blanking valve

Abstract

The utility model relates to a rotary blanking valve impeller sealing structure which is characterized in that an impeller is installed inside a shell and comprises a pressing plate and flexible sealing strips, the sealing strips are arranged on the top and the side portion of a blade of the impeller, and a gap is formed between the blade of the impeller and the inner wall of the shell. The sealing strip is tightly attached to the inner wall of the shell and seals the gap. According to the utility model, the impeller and the shell are not in rigid contact any more, the clearance between the blade and the shell is enough to ensure the passing ability of materials, and meanwhile, the adaptability and the sealing property can be ensured by the pressing rotation of the sealing strip; meanwhile, the whole periphery of the impeller with the optimized structure is a smooth plane without bolts and steps, so that the phenomenon that the blades and a sealing working surface are clamped into the shell due to the fact that the materials are hung and carried can be prevented, and the blocking phenomenon is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary unloading valve, more particularly to a rotary unloading valve impeller sealing structure. BACKGROUND

[0002] At present, the impeller of the rotary valve into the kiln adopts the structure of blades plus two side end plates, the plane of the end plate and the end cover of the shell leaves a very small gap, which can prevent particulate materials from entering the gap; the outer circle of the blade in the circumferential direction of the impeller is fixed to the top of the blade with a hard sealing strip, which can tightly adhere to the inner wall of the shell, effectively separating the particulate materials, and its structure is suitable for the conveying of cement particle raw materials, but in the case of applying it to the fine powder, strip and flocculent materials and other diversified materials in the garbage combustible material into the kiln and the garbage environmental protection disposal plant, fine powder materials are easily brought between the end plate of the impeller and the end cover of the shell, which increases the rotating resistance of the impeller and the load of the motor, and at the same time, the strip and flocculent or flexible materials in the circumferential direction are easily hung on the bolts and blocked during rotation. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a rotary unloading valve impeller sealing structure, which can avoid the blocking phenomenon of the material in the circumferential direction and on both sides and ensure that the material passes completely.

[0004] The technical scheme adopted by the utility model to solve its technical problem is that a rotary unloading valve impeller sealing structure is constructed, the impeller is installed inside the shell, and the structure comprises a pressing plate and a flexible sealing strip, the sealing strip is arranged on the top and side of the blade of the impeller, there is a gap between the blade of the impeller and the inner wall of the shell, and the sealing strip tightly adheres to and seals the gap of the inner wall of the shell.

[0005] According to the above scheme, the sealing strip is made of thick wear-resistant rubber plate.

[0006] According to the above scheme, the pressing plate tightly fixes the sealing strip on the impeller through bolts.

[0007] According to the above scheme, the pressing plate is provided with countersunk holes for installing bolts.

[0008] According to the above scheme, the hole corresponding to the bolt in the sealing strip is a strip-shaped hole.

[0009] According to the above scheme, the pressing plate is made of steel plate.

[0010] The rotary unloading valve impeller sealing structure has the following beneficial effects:

[0011] This invention eliminates the rigid contact between the impeller and the housing, ensuring sufficient material flow through the gap between the blades and the housing. Meanwhile, the sealing strip's pressing and rotating action ensures adaptability and sealing. Furthermore, the optimized impeller has a smooth, flat surface around its entire perimeter, free of bolts and steps, preventing materials from being caught or trapped in the housing by the blades and sealing surfaces, effectively avoiding blockages. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0013] Figure 1 This is a cross-sectional view of the rotary feeder valve impeller sealing structure of this utility model;

[0014] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0015] Figure 3 This is a front view of the rotary feeder valve impeller sealing structure of this utility model. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1-3 As shown, the rotary valve sealing structure of this utility model includes a pressure plate 1, a flexible sealing strip 2, and bolts 3. The pressure plate 1 is made of steel plate and consists of a top pressure plate and a side pressure plate, which are assembled into a whole along the periphery of the impeller 4 blades. The bolt holes of the pressure plate 1 are countersunk holes for pressing the sealing strip 2.

[0018] The sealing strip 2 is made of wear-resistant rubber sheet and consists of top and side sealing strips. It is assembled into a whole along the periphery of the blade and is tightly attached to the housing 5 in all directions. Its mounting hole is a strip-shaped hole, which can adjust the position of the sealing strip 2 so that after a certain amount of wear, the sealing strip 2 can be adjusted to be tightly attached to the housing 5 again.

[0019] Bolt 3 is a standard fastener used to connect and fasten pressure plate 1, gasket 2 and blade.

[0020] like Figure 2 As shown, the impeller blades have a reduced diameter, leaving a certain gap between them and the inner wall of the casing 5. Figure 3 As shown, the end plates at both ends of the impeller 4 blades are removed, leaving a certain gap between them and the side wall of the casing 5.

[0021] This invention eliminates the end plates on both sides of the original impeller 4, and uses flexible sealing strips 2 to press against the cover plates on both sides of the housing 5, preventing fine materials from getting stuck in the gap between the impeller 4 and the cover plates of the housing 5. Simultaneously, by reducing the diameter of the impeller 4, the flexible sealing strips 2 are also used to press against the housing 5 circumferentially. Furthermore, the structure of the pressure plate 1 ensures a smooth working surface, preventing material jamming and sticking. This reduces the likelihood of jamming between the blades and the housing 5 during impeller 4 rotation, ensuring continuous and stable operation of the equipment, avoiding damage to the motor and reduce the failure rate. This invention effectively prevents material blockage and jamming by using flexible sealing materials instead of the original hard sealing materials and controlling the gap between the impeller and the housing.

[0022] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A rotary dumper valve wheel seal construction, said wheel being mounted inside a housing, characterized by, The invention relates to a pump comprising a pressure plate and a flexible sealing strip arranged on the top and side of the blades of the impeller, wherein there is a gap between the blades of the impeller and the inner wall of the casing, and the sealing strip is in close contact with the inner wall of the casing and seals the gap.

2. The rotary dumper valve wheel seal structure of claim 1, wherein, The sealing strip is made of a thick wear-resistant rubber plate.

3. The rotary dumper valve wheel seal structure of claim 1 wherein, The pressure plate is used to press and fix the sealing strip on the impeller by bolts.

4. The rotary dumper valve wheel seal structure of claim 3 wherein, The pressure plate is provided with countersunk holes for mounting bolts.

5. The rotary dumper valve wheel seal structure of claim 3 wherein, The holes in the sealing strip corresponding to the bolts are strip-shaped holes.

6. The rotary dumper valve wheel seal structure of claim 1 wherein, The pressure plate is made of a steel plate.

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