Screw conveyor for powder production

Abstract

The utility model provides a screw conveying device for powder production, comprising a conveying cylinder, a motor, an end cover and a rotating shaft; a discharge port is formed at one end of the conveying cylinder, the end cover is fixed to the other end of the conveying cylinder, the motor is fixed to the outer end of the end cover, the rotating shaft is arranged inside the conveying cylinder and one end of the rotating shaft is drivingly connected to the output shaft of the motor, a spiral blade is fixed on the outer wall of the rotating shaft, and a feed hopper is arranged on the top of the other end of the conveying cylinder; the screw conveying device for powder production also comprises a shell, a spiral groove is arranged on the outer peripheral wall of the conveying cylinder, a copper cooling water pipe is wound around the spiral groove, the shell is sleeved on the outside of the conveying cylinder, heat insulation cotton is embedded between the shell and the conveying cylinder, and the water inlet and water outlet of the cooling water pipe are both extended outside the shell; the utility model can prevent the powder from sticking and agglomerating due to the increase of temperature, and can prevent the screw conveying device from being stuck by the powder.

Description

Technical Field

[0001] The utility model relates to the technical field of powder conveying devices, in particular to a screw conveying device for powder production. Background Art

[0002] A screw conveying device is a device commonly used for conveying powders. The screw conveying devices currently on the market include a conveying cylinder, a motor, an end cover and a rotating shaft; a discharge port is formed at one end of the conveying cylinder, the end cover is fixed to the other end of the conveying cylinder, the motor is fixed to the outer end of the end cover, the rotating shaft is arranged inside the conveying cylinder and one end of the rotating shaft is drivingly connected to the output shaft of the motor, a spiral blade extending along the axial direction of the rotating shaft is fixed on the outer wall of the rotating shaft, and a feed hopper is arranged on the top of the other end of the conveying cylinder; when the powder enters the conveying cylinder through the feed hopper, the powder can be sequentially conveyed to the discharge port and discharged through the discharge port when the motor drives the rotating shaft and the spiral blade to rotate; however, in the above-mentioned screw conveying device, when the spiral blade conveys the powder, the powder will be in a state of being squeezed and compressed, which can easily lead to an increase in the temperature of the powder, so that it is easy to cause the powder to stick and agglomerate, and it is even easy for the screw conveying device to be stuck by the powder. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a screw conveying device for powder production, which, through the arrangement of a cooling water pipe, can cool a conveying cylinder and the powder in the conveying cylinder when cooling water flows through the cooling water pipe, thereby preventing the powder from sticking and agglomerating due to temperature increase, and preventing the screw conveying device from being stuck by the powder.

[0004] The utility model provides a screw conveying device for powder production, comprising a conveying cylinder, a motor, an end cover and a rotating shaft; a discharge port is formed at one end of the conveying cylinder, the end cover is fixed to the other end of the conveying cylinder, the motor is fixed to the outer end of the end cover, the rotating shaft is arranged inside the conveying cylinder and one end of the rotating shaft is drivingly connected with the output shaft of the motor, a spiral blade extending along the axial direction of the rotating shaft is fixed on the outer wall of the rotating shaft, and a feed hopper is arranged on the top of the other end of the conveying cylinder; the screw conveying device for powder production also comprises a shell, a spiral groove extending along the length direction of the conveying cylinder is arranged on the outer peripheral wall of the conveying cylinder, a copper cooling water pipe is wound around the spiral groove, and a portion of the cooling water pipe is embedded in the spiral groove, the shell is sleeved on the outside of the conveying cylinder, a gap is left between the inner wall of the shell and the outer wall of the conveying cylinder, heat insulation cotton is embedded between the shell and the conveying cylinder, the cooling water pipe is pressed on the conveying cylinder through the heat insulation cotton, and the water inlet end and the water outlet end of the cooling water pipe both extend out of the shell.

[0005] The utility model provides a cooling water pipe, and when cooling water flows through the cooling water pipe, the cooling water pipe can cool the conveying cylinder and the powder in the conveying cylinder, thereby preventing the powder from sticking and agglomerating due to temperature increase, and preventing the spiral conveying device from being stuck by the powder.

[0006] In a possible embodiment, the shell includes two half shells that are symmetrically arranged in an upper and lower direction, and the thermal insulation cotton is fixed on the inner walls of the two half shells, and the two ends of one half shell in the circumferential direction are respectively fixed to the two ends of the other half shell in the circumferential direction, and the water inlet end and the water outlet end of the cooling water pipe pass through one of the half shells and then extend out of the half shell; after the two half shells are combined to form the shell, the shell can be conveniently fixed on the conveying cylinder, and because the thermal insulation cotton is fixed on the inner walls of the two half shells, the thermal insulation cotton can be reliably pressed against the outer wall of the shell after the two ends of the two half shells are respectively fixed.

[0007] In a possible embodiment, both ends of each half shell in the circumferential direction are provided with extension edges extending outward in the radial direction of the half shell, and the two half shells are fastened by a plurality of bolt assemblies passing through the extension edges; by adopting this structure, the two half shells can be reliably and conveniently fixed together.

[0008] In a possible embodiment, two limit retaining rings are provided on the outside of the conveying cylinder, and the inner walls of the two limit retaining rings are welded and fixed to the outer wall of the conveying cylinder, and the cooling water pipe, shell and thermal insulation cotton are all located between the two limit retaining rings, and the two ends of the shell in the axial direction and the two ends of the thermal insulation cotton in the axial direction are respectively abutted against one of the limit retaining rings; by adopting this structure, when the shell and the thermal insulation cotton are assembled with the conveying cylinder, the two ends of the shell and the thermal insulation cotton can abut against the limit retaining rings, thereby achieving the limitation of the shell and the thermal insulation cotton, that is, it can facilitate the fixation of the shell and the thermal insulation cotton to the conveying cylinder. In addition, after the shell and the thermal insulation cotton are fixed to the conveying cylinder, the shell and the thermal insulation cotton can be prevented from moving along the axial direction of the conveying cylinder, thereby improving the reliability of the shell and the thermal insulation cotton after being fixed to the conveying cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0010] Figure 2 It is a cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0012] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0013] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0014] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] See also Figure 1-2 As shown, the embodiment of the present application discloses a screw conveying device for powder production, including a conveying cylinder 1, a motor 2, an end cover 3 and a rotating shaft 4; a discharge port 11 is formed at one end of the conveying cylinder 1, the end cover 3 is fixed to the other end of the conveying cylinder 1, the motor 2 is fixed to the outer end of the end cover 3, the rotating shaft 4 is arranged inside the conveying cylinder 1 and one end of the rotating shaft 4 is drivingly connected to the output shaft of the motor 2, a spiral blade 41 extending along the axial direction of the rotating shaft 4 is fixed on the outer wall of the rotating shaft 4, and a feed hopper 12 is arranged on the top of the other end of the conveying cylinder 1; the screw conveying device for powder production also includes a shell 5, a spiral groove 13 extending along the length direction of the conveying cylinder 1 is arranged on the outer peripheral wall of the conveying cylinder 1, a copper cooling water pipe 6 is wound around the spiral groove 13, and a portion of the cooling water pipe 6 Embedded in the spiral groove 13, the shell 5 is sleeved on the outside of the conveying cylinder 1, and a gap is left between the inner wall of the shell 5 and the outer wall of the conveying cylinder 1. Insulation cotton 7 is embedded between the shell 5 and the conveying cylinder 1, and the cooling water pipe 6 is pressed on the conveying cylinder 1 through the insulation cotton 7. The water inlet end 61 and the water outlet end 62 of the cooling water pipe 6 both extend out of the shell 5; the water inlet end and the water outlet end of the above-mentioned cooling water pipe can be connected to the cooling water circulation device, so that the cooling water circulation device circulates and transports the cooling water to the cooling water pipe. The cooling water circulation device is an existing device on the market, so it will not be described here; the above-mentioned insulation cotton is used to isolate the heat exchange between the air in the external environment and the cooling water pipe, so that the cooling water pipe can reliably cool the conveying cylinder and the powder in the conveying cylinder.

[0016] The shell 5 includes two half shells 51 which are symmetrically arranged in an upper and lower direction. The heat insulating cotton 7 is fixed on the inner walls of the two half shells 51. The two ends of one half shell 51 in the circumferential direction are respectively fixed to the two ends of the other half shell 51 in the circumferential direction. The water inlet end 61 and the water outlet end 62 of the cooling water pipe 6 penetrate one of the half shells 51 and extend out of the half shell 51. After the shell is formed by combining the two half shells, the shell can be conveniently fixed on the conveying cylinder, and since the heat insulating cotton is fixed on the inner walls of the two half shells, the heat insulating cotton can be reliably pressed against the outer wall of the shell after the two ends of the two half shells are respectively fixed.

[0017] Both ends of each half shell 51 in the circumferential direction are provided with extension edges 511 extending outward in the radial direction of the half shell 51, and the two half shells 51 are fastened by a plurality of bolt assemblies 52 passing through the extension edges 511; by adopting this structure, the two half shells can be reliably and conveniently fixed together.

[0018] The outer sleeve of the conveying cylinder 1 is provided with two limit retaining rings 8, the inner circumferential walls of the two limit retaining rings 8 are welded and fixed to the outer circumferential wall of the conveying cylinder 1, the cooling water pipe 6, the shell 5 and the thermal insulation cotton 7 are all located between the two limit retaining rings 8, and the two ends of the shell 5 in the axial direction and the two ends of the thermal insulation cotton 7 in the axial direction are respectively abutted against one of the limit retaining rings 8; by adopting this structure, when the shell and the thermal insulation cotton are assembled with the conveying cylinder, the two ends of the shell and the thermal insulation cotton can abut against the limit retaining rings, thereby realizing the limitation of the shell and the thermal insulation cotton, that is, it can bring convenience to the fixation of the shell and the thermal insulation cotton to the conveying cylinder. In addition, after the shell and the thermal insulation cotton are fixed to the conveying cylinder, it can prevent the shell and the thermal insulation cotton from moving along the axial direction of the conveying cylinder, thereby improving the reliability of the shell and the thermal insulation cotton after being fixed to the conveying cylinder.

[0019] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A screw conveying device for powder production, comprising a conveying cylinder (1), a motor (2), an end cover (3) and a rotating shaft (4); a discharge port (11) is formed at one end of the conveying cylinder (1), the end cover (3) is fixed to the other end of the conveying cylinder (1), the motor (2) is fixed to the outer end of the end cover (3), the rotating shaft (4) is arranged inside the conveying cylinder (1) and one end of the rotating shaft (4) is drivingly connected to the output shaft of the motor (2), a spiral blade (41) extending in the axial direction of the rotating shaft (4) is fixed on the outer wall of the rotating shaft (4), and a feed hopper (12) is arranged on the top of the other end of the conveying cylinder (1); characterized in that: The screw conveying device for powder production also includes a shell (5). A spiral groove (13) extending along the length direction of the conveying cylinder (1) is provided on the outer peripheral wall of the conveying cylinder (1). A copper cooling water pipe (6) is wound around the spiral groove (13). The cooling water pipe (6) is partially embedded in the spiral groove (13). The shell (5) is sleeved on the outside of the conveying cylinder (1). A gap is left between the inner wall of the shell (5) and the outer wall of the conveying cylinder (1). Heat insulation cotton (7) is embedded between the shell (5) and the conveying cylinder (1). The cooling water pipe (6) is pressed against the conveying cylinder (1) through the heat insulation cotton (7). The water inlet end (61) and the water outlet end (62) of the cooling water pipe (6) both extend out of the shell (5).

2. The screw conveying device for powder production according to claim 1, characterized in that: The shell (5) comprises two half shells (51) symmetrically arranged in an upper and lower direction, the heat insulating cotton (7) is fixed on the inner walls of the two half shells (51), the two ends of one half shell (51) in the circumferential direction are respectively fixed to the two ends of the other half shell (51) in the circumferential direction, and the water inlet end (61) and the water outlet end (62) of the cooling water pipe (6) penetrate through one of the half shells (51) and extend out of the half shell (51).

3. The screw conveying device for powder production according to claim 2, characterized in that: Both ends of each half shell (51) in the circumferential direction are provided with extension edges (511) extending outwardly in the radial direction of the half shell (51), and the two half shells (51) are fastened by a plurality of bolt assemblies (52) passing through the extension edges (511).

4. The screw conveying device for powder production according to any one of claims 1 to 3, characterized in that: The outer sleeve of the conveying cylinder (1) is provided with two limit retaining rings (8), the inner circumferential walls of the two limit retaining rings (8) are welded and fixed to the outer circumferential wall of the conveying cylinder (1), the cooling water pipe (6), the shell (5) and the thermal insulation cotton (7) are all located between the two limit retaining rings (8), and the two ends of the shell (5) in the axial direction and the two ends of the thermal insulation cotton (7) in the axial direction are respectively abutted against one of the limit retaining rings (8).

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