Powder screening machine with cleaning device

Abstract

This utility model provides a powder screening machine with a cleaning device, including a frame and a rotating drum. The rotating drum is cylindrical and placed horizontally on the frame. The drum wall has screen holes, and a screen hole cleaning device is also provided. The screen hole cleaning device is located on the outer surface of the rotating drum, either in contact with the outer surface or with a gap. The screen hole cleaning device is a high-pressure air knife or a brush. The brush is in contact with the outer surface of the rotating drum, while the high-pressure air knife has a gap with the outer surface of the rotating drum. The powder screening machine provided by this utility model has a screen hole cleaning device on the outside of the rotating drum. This device can promptly return the powder in the screen holes to the rotating drum, avoiding the problem of screen clogging.

Description

Technical Field

[0001] This utility model belongs to the technical field of food processing equipment, specifically relating to a powder screening machine with a cleaning device. Background Technology

[0002] Powdered food ingredients, such as chili powder or flour, require further sieving after coarse grinding. Existing methods for sieving fine powders sometimes involve placing the powder into a mesh drum equipped with brushes inside. As the drum rotates, the brushes brush the finer powder through the sieve on the inner wall of the drum. However, this method is suitable for dry powders. For powders with a certain degree of moisture, due to their slightly higher viscosity, sieve clogging is prone to occur, thus affecting production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a high-capacity powder screening machine with a wide range of applications to solve the problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A powder screening machine with a cleaning device includes a frame and a rotating drum. The rotating drum is cylindrical and is placed horizontally on the frame. The drum wall has screen holes and is also equipped with a screen hole cleaning device. The screen hole cleaning device is located on the outer wall surface of the rotating drum and is in contact with or has a gap with the outer wall surface of the rotating drum.

[0006] Furthermore, the screen cleaning device is a high-pressure air knife or a brush. The brush contacts the outer wall surface of the rotating drum, while the high-pressure air knife leaves a gap with the outer wall surface of the rotating drum.

[0007] Furthermore, the screen hole cleaning device is fixedly installed on the frame.

[0008] Furthermore, a scraper is installed inside the rotating drum, with one side of the scraper contacting or having a gap with the inner wall surface of the rotating drum.

[0009] Furthermore, the scraper is long and narrow, with the longer side of the scraper contacting or leaving a gap between it and the inner wall surface of the rotating drum, with the gap being 0-30 mm.

[0010] Furthermore, a shaft support that penetrates the inner cavity of the rotating cage is installed on the frame, a sub-support is installed on the shaft support, and a scraper is installed at the end of the sub-support.

[0011] Furthermore, the stents can be divided into one or more.

[0012] Furthermore, the cage wall of the rotating cage includes a tightly fitted inner and outer double-layer cage frame, with a screen installed between the inner and outer double-layer cage frames, and the screen holes are screen mesh holes.

[0013] Furthermore, a fine powder tray is provided, which is installed on the frame and located below the rotating drum.

[0014] Furthermore, the rotating drum has a feed inlet and a discharge outlet at each end. The feed inlet is located above one end of the rotating drum, and the discharge outlet is located below the other end of the rotating drum.

[0015] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0016] (1) A screen cleaning device is installed outside the rotating drum. This device can promptly return the powder in the screen holes to the rotating drum, thus avoiding screen blockage.

[0017] (2) The horizontally placed rotating drum can evenly and repeatedly sieve powder, achieving a higher effect of sieving coarse and fine powder. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a powder screening machine with a cleaning device provided in a preferred embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the bottom structure of a powder screening machine with a cleaning device provided in a preferred embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the disassembled structure of a powder screening machine with a cleaning device provided in a preferred embodiment of this utility model.

[0021] In the diagram: 1-Frame, 2-Rotating cage, 3-Screen cleaning device, 4-Inlet, 5-Outlet, 6-Fine powder tray, 7-Shaft support, 8-Divider support, 9-Scraper, 10-Spring, 11-Drive gear, 12-Driven gear, 21-Cage frame, 22-Screen. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] Example

[0024] This embodiment provides a powder screening machine with a cleaning device, including a frame 1 and a rotating cage 2. The rotating cage 2 is cylindrical and is placed horizontally on the frame 1. The cage wall of the rotating cage 2 has sieve holes. Two driven gears 12 are provided at both ends of the cylindrical rotating cage 2. Two drive gears 11 are installed on the frame. The two drive gears 11 mesh with the two driven gears 12 respectively. External force drives the drive gears 11 to rotate, thereby driving the rotating cage 2 to rotate.

[0025] The powder screening machine with cleaning device provided in this embodiment is also equipped with a screen hole cleaning device 3. The screen hole cleaning device 3 is located on the outer wall surface of the rotating drum 2, and the screen hole cleaning device 3 is in contact with or has a gap with the outer wall surface of the rotating drum 2. Specifically, the screen hole cleaning device 3 is long and narrow, fixedly installed on the frame 1, parallel to the rotating shaft of the rotating drum 2, and spans across the outer wall surface of the rotating drum 2. When the rotating drum 2 rotates, the screen hole cleaning device 3 does not rotate. The screen hole cleaning device 3 is a high-pressure air knife or a brush. The brush is in contact with the outer wall surface of the rotating drum, and the high-pressure air knife is in contact with the outer wall surface of the rotating drum. That is, there is a gap between the air blowing port of the high-pressure air knife and the outer wall surface of the rotating drum. The size of this gap is 0-10 cm, which can be set according to the needs. Here, the air blowing direction of the high-pressure air knife is towards the rotating shaft of the rotating drum 2. When the rotating drum 2 rotates one revolution, the contact area of ​​the brush or the blowing range of the high-pressure air knife can cover the entire area of ​​the side wall of the rotating drum 2.

[0026] The rotating drum 2 has a feed inlet 4 and a discharge outlet 5 at its two ends. The feed inlet 4 is located above one end of the rotating drum 2, and the discharge outlet 5 is located below the other end. An auger is installed below the feed inlet 4, through which the coarse powder to be screened enters the rotating drum 2. The coarse powder residue screened inside the rotating drum 2 is discharged from the discharge outlet 5. A fine powder tray 6 is installed on the frame 1, located below the rotating drum 2, to receive the fine powder screened from the rotating drum 2. A powder collection window is provided at the bottom of the fine powder tray 6, which can be opened from the bottom of the fine powder tray 6 for easy removal of the screened fine powder.

[0027] In addition, a scraper 9 is provided inside the rotating drum 2. The scraper 9 is elongated, and the longer side of the scraper 9 contacts or leaves a gap with the inner wall surface of the rotating drum. The gap is 0-30 mm, preferably 0-5 mm, and can be set as needed. Here, the scraper 9 is made of elastic material, preferably silicone. In practical applications, it can also be made of other materials, and this utility model does not limit this.

[0028] Furthermore, a shaft support 7 penetrating the inner cavity of the rotating drum 2 is installed on the frame 1. Sub-supports 8 are installed on the shaft support 7, and the sub-supports 7 and shaft support 8 are connected by screws. The angle between the sub-supports 7 and shaft support 8 can be adjusted. There are one or more sub-supports 8, and a scraper 9 is installed at the end of each sub-support 8.

[0029] In this embodiment, the cylindrical wall of the rotating cage 2 is equivalent to the cage wall. The cage wall includes inner and outer double-layer cage frames 21 that fit together tightly. A screen 22 is installed between the inner and outer double-layer cage frames 21. The screen holes (not shown in the figure) on the cage wall of the rotating cage 2 are the mesh holes of the screen 22. Here, the screen 22 is preferably made of stainless steel. In other embodiments, the material of the screen 22 can be set by the user, and this utility model does not limit it in this regard.

[0030] Working principle:

[0031] When the power is turned on, the motor drives the drive gear 11 to rotate, which in turn drives the driven gear 12 to rotate, thus the rotating drum 2 begins to rotate on the frame 1. The coarse powder to be screened enters the rotating drum 2 through the feed inlet 4. As the drum 2 rotates, the scraper 9 rubs against the screen surface on the inner wall of the drum 2, causing finer powder to pass through the mesh and fall into the fine powder tray 6. During machine operation, the support bracket 8 is pulled back in the opposite direction of rotation by the spring 10, preventing the support bracket 8 and scraper 9 from being displaced by the friction generated against the inner wall of the drum 2 during prolonged rotation. During the rotation of the drum 2, the screen cleaning device 3 blows air from the outside of the drum 2 into the drum 2 cavity, blowing the powder stuck in the screen holes back into the drum 2 cavity. Coarse powder that does not pass through the screen holes reaches the other end of the drum 2 and is discharged through the discharge outlet 5, thus completing the powder screening.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A powder screening machine with a cleaning device, comprising a frame and a rotating drum, the rotating drum being cylindrical and horizontally placed on the frame. The drum wall has screen holes, and a screen hole cleaning device is also provided. The screen hole cleaning device is located on the outer surface of the rotating drum, and the screen hole cleaning device is in contact with or has a gap with the outer surface of the rotating drum, characterized in that... A shaft support that penetrates the inner cavity of the rotating cage is installed on the frame. A sub-support is installed on the shaft support. A scraper is installed at the end of the sub-support. The sub-support and the shaft support are connected by screws. A spring is installed between the sub-support and the shaft support.

2. The powder screening machine with a cleaning device according to claim 1, characterized in that, The screen cleaning device is a high-pressure air knife or a brush. The brush is in contact with the outer wall surface of the rotating drum, and the high-pressure air knife leaves a gap with the outer wall surface of the rotating drum.

3. The powder screening machine with a cleaning device according to claim 1, characterized in that, The rotating drum is equipped with a scraper, one side of which is in contact with or has a gap with the inner wall surface of the rotating drum.

4. The powder screening machine with a cleaning device according to claim 3, characterized in that, The scraper is long and narrow, with the longer side of the scraper contacting or having a gap between it and the inner wall surface of the rotating drum, the gap being 0-30 mm.

5. The powder screening machine with a cleaning device according to claim 1, characterized in that, The sub-supports may be one or more.

6. The powder screening machine with a cleaning device according to claim 1, characterized in that, The rotating cage wall includes a tightly fitted inner and outer double-layer cage frame, and a screen is installed between the inner and outer double-layer cage frames, with the screen holes being screen mesh holes.

7. The powder screening machine with a cleaning device according to claim 1, characterized in that, It also includes a fine powder tray, which is mounted on the frame and located below the rotating drum.

8. The powder screening machine with a cleaning device according to claim 1, characterized in that, The rotating drum has a feed inlet and a discharge outlet at its two ends. The feed inlet is located above one end of the rotating drum, and the discharge outlet is located below the other end of the rotating drum.

Images