Novel high-temperature screw conveyer with bearing protection function

Abstract

The utility model provides a novel bearing protection high-temperature spiral conveyer which comprises a shell and a spiral body located in the shell, sealing boxes are fixedly arranged at the two ends of the spiral body, and the spiral body is driven by a transmission mechanism. The sealing box comprises a sealing cavity, a connecting base and an end plate are fixed to the two ends of the sealing cavity respectively, a heat preservation and insulation felt is fixedly arranged on the end plate and sealed through a sealing plate, the connecting base is attached to the transmission mechanism, and the sealing plate is attached and fixed to the end of the spiral body. The sealing boxes are additionally arranged at the two ends of the spiral body to block heat inside and outside the shell, heat entering the bearing is reduced, the water-cooling bearing seat can effectively reduce the temperature of the bearing through active heat exchange, transmission is conducted through the chain wheel and the chain, the speed reducer and the spiral shaft are separated, and the service life of the spiral body is prolonged. Heat is further prevented from entering the motor reducer, the service life of the screw conveyor bearing and the motor reducer can be prolonged, the use cost is saved, and the overhaul period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors, in particular to a novel high-temperature screw conveyor with bearing protection. Background Art

[0002] High-temperature screw conveyors are suitable for light industry, chemical industry, environmental protection, food and other industries. They are used for high-temperature powders, small particles and unevenly sized materials. They are discharged from the lower outlet of the screw conveyor and transported to the next process. During the high-temperature screw conveyor's transportation process, the high-temperature heat conduction will cause the material to melt, especially rubber, asphalt, plastic and other materials. Solid materials will become liquids and even volatilize toxic gases. The skeleton oil seal direct-connected bearings of ordinary screw conveyors are used. Although the structure is relatively simple and compact, it has the following disadvantages: liquid leakage will damage the seals and bearings at both ends of the screw conveyor and cause them to get stuck, the motor will overheat and burn out, and the maintenance cost and use cost will be increased. Volatile gases diffused in the air will cause harm to the human body, and liquids will also destroy the cleanliness of the environment, which does not meet environmental protection requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a new type of high-temperature screw conveyor with bearing protection, which blocks the heat of the shell, reduces the heat entering the motor reducer and bearings, and prolongs the service life of the screw machine seal, bearings and motor reducer.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of high-temperature screw conveyor with bearing protection, including a shell and a spiral body located in the shell, sealing boxes are fixedly arranged at both ends of the spiral body, and the spiral body is driven by a transmission mechanism;

[0005] The sealing box includes a sealing cavity, based on which a connecting seat and an end plate are respectively fixed at both ends of the sealing cavity, a thermal insulation felt is fixed on the end plate, and the thermal insulation felt is closed with a sealing plate, the connecting seat is fitted with a transmission mechanism, and the sealing plate is fitted and fixed to the end of the spiral body.

[0006] Furthermore, the sealing box further comprises a rib plate, and the rib plate is fixedly disposed between the connecting seat and the end plate.

[0007] Furthermore, the transmission mechanism includes a water-cooled bearing seat that is fitted with the connecting seat, and a seat bearing is fixedly arranged on the other side of the water-cooled bearing seat. The seat bearing is nested in the end of the spiral body, and the end of the spiral body is coaxially fixed with the sprocket assembly.

[0008] Furthermore, the sprocket assembly includes a driving sprocket, a driven sprocket and a chain, the driving sprocket is driven by a motor reducer, the driven sprocket is coaxially fixed with the end of the spiral body, and the driving sprocket and the driven sprocket rotate synchronously with the chain.

[0009] Furthermore, a skeleton oil seal and a lip seal are fixedly arranged between the spiral body and the water-cooled bearing seat.

[0010] Furthermore, packing is filled between the spiral body and the end plate.

[0011] Furthermore, the spiral body includes a head shaft and a tail shaft, the head shaft is arranged facing the transmission mechanism, and a sealing box, a water-cooled bearing seat and a seated bearing are also sequentially arranged on the tail shaft.

[0012] Compared with the prior art, the beneficial effects of the utility model include: by adding sealing boxes at both ends of the spiral body, the heat inside and outside the shell can be blocked, and the heat entering the bearing can be reduced. The water-cooled bearing seat can effectively reduce the temperature of the bearing by actively exchanging heat, and the reducer is disengaged from the spiral shaft through the sprocket chain, further blocking the heat from entering the motor reducer. The sealing effect of the sealing box is good. Such a design can extend the service life of the screw conveyor bearings and the motor reducer, saving the use cost and maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 The overall structure of the high temperature screw conveyor with new bearing protection is shown schematically;

[0015] Figure 2 The cross-sectional structure of the sealing box is schematically shown;

[0016] Figure 3 The locally enlarged structure of region A is schematically shown.

[0017] Numbers in the figure: 1-shell, 2-spiral, 3-sealing box, 31-sealing chamber, 32-connecting seat, 33-end plate, 34-thermal insulation felt, 35-sealing plate, 36-rib plate, 4-water-cooled bearing seat, 5-seat bearing, 6-driving sprocket, 7-driven sprocket, 8-chain, 9-motor reducer, 10-skeleton oil seal, 11-lip seal, 12-packing. DETAILED DESCRIPTION

[0018] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0019] Figure 1 The schematic diagram shows the overall structure of a new type of high temperature screw conveyor with bearing protection. Figure 1 As shown, it includes a housing 1 and a spiral body 2 located in the housing 1, sealing boxes 3 are fixedly arranged at both ends of the spiral body 2, and the spiral body 2 is driven by a transmission mechanism;

[0020] Figure 2 The schematic diagram shows the cross-sectional structure of the sealing box, combined with Figure 2 The sealing box 3 is described in detail. The sealing box 3 includes a sealing cavity 31, and a connecting seat 32 and an end plate 33 are fixedly arranged at both ends of the sealing cavity 31, and a rib plate 36 is fixedly arranged between the end plate 33 and the connecting seat 32, and the two ends of the rib plate 36 are fixed to the connecting seat 32 and the opposite side of the end plate 33. A thermal insulation felt 34 is fixedly arranged on the side of the end plate 33 facing away from the connecting seat 32, and the thermal insulation felt 34 is closed with a sealing plate 35, and the sealing plate 35 includes an end sealing plate 35, an outer sealing plate 35, and an inner sealing plate 35. After the outer sealing plate 35 and the inner sealing plate 35 are fixed to the outer side and the inner side of the aforementioned thermal insulation felt 34, the thermal insulation felt 34 is sealed in the aforementioned end sealing plate 35, the outer sealing plate 35, and the inner sealing plate 35 based on the ends of the outer sealing plate 35 and the inner sealing plate 35. The aforementioned sealing box 3 is fixedly mounted on both ends of the spiral body 2 in a sleeve manner. Since the gap between the shaft of the spiral body 2 and the sealing box 3 is small, the aforementioned sealing cavity 31 can be formed between the shaft and the sealing box 3 to prevent the outflow of materials. The aforementioned thermal insulation felt 34 is also close to the spiral body 2 and can also play a certain role in heat insulation.

[0021] The aforementioned transmission mechanism includes a water-cooled bearing seat 4 that is fitted with the connecting seat 32, and a seat bearing 5 is fixedly arranged on the other side of the water-cooled bearing seat 4. The seat bearing 5 sleeve is also nested in the end of the aforementioned spiral body 2. The end of the spiral body 2 is coaxially fixed with the sprocket assembly, and the sprocket assembly drives the spiral body 2 to rotate in the shell 1.

[0022] The aforementioned sprocket assembly includes a driving sprocket 6, a driven sprocket 7 and a chain 8. The driving sprocket 6 is coaxially fixed with the rotating shaft of the motor reducer 9, and the driven sprocket 7 is coaxially fixed with the end of the spiral body 2. The motor reducer 9 drives the driving sprocket 6 to rotate, and the driven sprocket 7 rotates synchronously with the driving sprocket 6 under the synchronization of the chain 8, thereby driving the spiral body 2 to rotate in the housing 1. The sprocket and chain 8 are used for transmission, and the motor reducer 9 is disconnected from the spiral shaft, which can prevent high temperature from being directly transmitted to the motor reducer 9. And based on the water-cooled bearing seat 4, after the water-cooled bearing seat 4 passes cooling water, the temperature of the bearing can be reduced, and there is no need to use high-temperature resistant bearings, which can effectively reduce production costs and maintenance costs. Figure 3 The schematic diagram shows the local enlarged structure of area A, as shown in Figure 3 As shown, a skeleton oil seal 10 and a lip seal 11 are fixedly arranged between the bearing seat and the spiral body 2 for double sealing, which can effectively improve the sealing effect.

[0023] The aforementioned sealing box 3 can also separate the bearing seat from the housing 1 by a certain distance, and can effectively prevent the high temperature from being transmitted through the housing 1 to the bearing and then to the motor reducer 9. Figure 3 As shown, a packing 12 is filled between the spiral body 2 and the end plate 33 , and the packing 12 can be replaced by other easily replaceable packing seals to further improve the sealing effect of the sealing box 3 .

[0024] The aforementioned spiral body 2 includes a head shaft and a tail shaft. The head shaft is arranged facing the transmission mechanism. A sealing chamber 31, a water-cooled bearing seat 4 and a seated bearing 5 are also sequentially arranged on the tail shaft.

[0025] By adding sealing boxes 3 at both ends of the spiral body 2, the heat inside and outside the shell 1 can be blocked and the heat entering the bearing can be reduced. The water-cooled bearing seat 4 can effectively reduce the temperature of the bearing by actively exchanging heat, and is transmitted through the sprocket chain 8 to disconnect the reducer from the spiral shaft, further blocking the heat from entering the motor reducer 9. The sealing effect of the sealing box 3 is good. Such a design can extend the service life of the screw conveyor bearing and the motor reducer 9, saving the use cost and maintenance cycle.

[0026] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A new type of high temperature screw conveyor with bearing protection, characterized in that: It comprises a shell (1) and a spiral body (2) located in the shell (1), sealing boxes (3) are fixedly arranged at both ends of the spiral body (2), and the spiral body (2) is driven by a transmission mechanism; The sealing box (3) comprises a sealing cavity (31), and a connecting seat (32) and an end plate (33) are respectively fixed at the two ends of the sealing cavity (31), and a thermal insulation felt (34) is fixed on the end plate (33). The thermal insulation felt (34) is closed by a sealing plate (35), the connecting seat (32) is fitted with a transmission mechanism, and the sealing plate (35) is fitted and fixed with the end of the spiral body (2).

2. The new type of high temperature screw conveyor with bearing protection according to claim 1 is characterized in that: The sealing box (3) further comprises a rib plate (36), wherein the rib plate (36) is fixedly arranged between the connecting seat (32) and the end plate (33).

3. The new type of high temperature screw conveyor with bearing protection according to claim 1 is characterized in that: The transmission mechanism comprises a water-cooled bearing seat (4) fitted with the connecting seat (32), a seat bearing (5) is fixedly arranged on the other side of the water-cooled bearing seat (4), the seat bearing (5) is nested in the end of the spiral body (2), and the end of the spiral body (2) is coaxially fixed with the sprocket assembly.

4. The new type of high temperature screw conveyor with bearing protection according to claim 3 is characterized in that: The sprocket assembly comprises a driving sprocket (6), a driven sprocket (7) and a chain (8); the driving sprocket (6) is driven by a motor reducer (9); the driven sprocket (7) is coaxially fixed with the end of the spiral body (2); the driving sprocket (6) and the driven sprocket (7) rotate synchronously with the chain (8).

5. The new type of high temperature screw conveyor with bearing protection according to claim 3 is characterized in that: A skeleton oil seal (10) and a lip seal (11) are fixedly arranged between the spiral body (2) and the water-cooled bearing seat (4).

6. The new type of high temperature screw conveyor with bearing protection according to claim 1 is characterized in that: Packing (12) is filled between the spiral body (2) and the end plate (33).

7. The new type of high temperature screw conveyor with bearing protection according to any one of claims 3-5, characterized in that: The spiral body (2) comprises a head shaft and a tail shaft, wherein the head shaft is arranged facing the transmission mechanism, and a sealing box (3), a water-cooled bearing seat (4) and a seated bearing (5) are also sequentially arranged on the tail shaft.

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