A powder screening machine

Abstract

The utility model provides a kind of powder screening machine, including frame and revolving cage, revolving cage is cylindrical, revolving cage is horizontally placed on frame, and revolving cage wall has sieve hole, and scraper is provided in revolving cage, and scraper is strip-shaped, and one side of scraper is in contact with the inner wall surface of revolving cage or has gap. The scraper is strip-shaped, the longer side of the strip-shaped scraper is close to the inner wall surface of the revolving cage, and the gap between the two is between 0-30mm. Fine powder tray is also provided below the revolving cage, and the fine powder tray is installed on the frame. A sieve hole cleaning device is also provided, which is strip-shaped and located on the outer wall surface of the revolving cage along the length direction of the revolving cage. The powder screening machine provided by the utility model has the advantages of high screening efficiency and wide application range.

Description

Technical Field

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

[0002] Powdered food ingredients, such as chili powder or flour, need to be further sieved after coarse grinding. The existing method of sieving fine powder involves placing the powder in a flat mesh screen in a closed space and dispersing it through vibration, allowing smaller particles to pass through the screen and achieving the effect of separating coarse and fine powder. This method relies solely on the powder's own falling speed to pass through the screen without any other external assistance, resulting in low production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a high-capacity powder screening machine 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 includes a frame and a rotating drum. The rotating drum is cylindrical and is placed horizontally on the frame. The drum wall has sieve holes, and a scraper is installed inside the drum. One side of the scraper contacts or has a gap with the inner wall surface of the drum.

[0006] Furthermore, the scraper is elongated, with the longer side of the scraper close to the inner wall surface of the rotating drum, and the gap between the two is between 0 and 30 mm.

[0007] Furthermore, a shaft support that penetrates the inner cavity of the rotating drum is installed on the frame, and a sub-support is vertically installed on the shaft support, with a scraper installed at the end of the sub-support.

[0008] Furthermore, the stents can be divided into one or more.

[0009] Furthermore, the cage wall of the rotating cage is composed of inner and outer double-layer cage frames that are tightly fitted together, and a screen is installed between the inner and outer double-layer cage frames with screen mesh holes.

[0010] Furthermore, a fine powder tray is provided, which is installed on the frame and located below the rotating drum.

[0011] 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.

[0012] Furthermore, a screen hole cleaning device is also provided. The screen hole cleaning device is long and narrow and is located on the outer wall surface of the rotating drum along the length of the rotating drum.

[0013] Furthermore, the screen cleaning device is a high-pressure air knife, and the air blowing direction of the high-pressure air knife is towards the rotating shaft of the rotating cage.

[0014] Furthermore, the screen hole cleaning device is fixedly installed on the frame.

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

[0016] (1) A scraper is installed in the horizontally placed rotating screen. The scraper increases the amount of powder passing through the screen and improves production efficiency.

[0017] (2) A screen cleaning device was installed outside the rotating drum, which solved the problem of wet powder clogging the screen. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the powder screening machine provided in a preferred embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of a powder screening machine provided in a preferred embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the scraper installation structure of a powder screening machine provided in a preferred embodiment of this utility model.

[0021] In the diagram: 1-frame, 2-rotating cage, 3-drive gear, 4-driven gear, 5-fine powder tray, 6-scraper, 7-branch support, 8-shaft support, 9-spring, 11-feed inlet, 12-discharge outlet, 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] Please refer to Figures 1-3This embodiment provides a powder screening machine, including a frame 1 and a rotating drum 2. The rotating drum 2 is cylindrical and is horizontally placed on the frame 1, rotating on the frame 1. Specifically, two driven gears 4 are provided at both ends of the rotating drum 2, and two drive gears 3 are installed on the frame. The two drive gears 3 mesh with the two driven gears 4 respectively. External force drives the drive gears 3 to rotate, thereby driving the rotating drum 2 to rotate. The rotating drum 2 has an inlet 11 and an outlet 12 at its two ends, respectively. The inlet 11 is located above one end of the rotating drum 2, and the outlet 12 is located below the other end of the rotating drum 2. An auger is provided below the inlet 11, and the coarse powder to be screened enters the rotating drum 2 through the auger at the inlet 11. The coarse powder residue screened in the rotating drum 2 is output from the outlet 12. A fine powder tray 5 is installed on the frame 1, located below the rotating drum 2, to receive the fine powder screened from the rotating drum 2. The bottom of the fine powder tray 5 is equipped with a powder dispensing window, which can be opened from the bottom of the fine powder tray 5 to facilitate the removal of the screened fine powder at any time.

[0025] The cylindrical wall of the rotating cage 2 is equivalent to the cage wall. In this embodiment, 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.

[0026] A scraper 6 is provided inside the rotating drum 2. One side of the scraper 6 is in contact with or has a gap with the inner wall surface of the rotating drum 2. Specifically, the scraper 6 is elongated, with the longer side of the scraper 6 closer to the inner wall surface of the rotating drum 2. The gap between the scraper 6 and the inner wall surface of the rotating drum 2 is between 0 and 30 mm, preferably between 0 and 5 mm. Here, the scraper 6 is made of an elastic material, preferably silicone. In practical applications, it can also be made of other materials, and this utility model does not limit this.

[0027] Specifically, a shaft support 8 penetrating the inner cavity of the rotating drum 2 is mounted on the frame 1. Sub-supports 7 are mounted on the shaft support 8, and the sub-supports 7 and shaft support 8 are connected by screws. The angle between the sub-supports 7 and shaft support 8 is adjustable. There are one or more sub-supports 7, and a scraper 6 is installed at the end of each sub-support 7. A spring 9 is installed between the sub-support 7 and shaft support 8, and the spring 9 is installed in the forward direction of the rotating drum 2. Figure 3 (As indicated by the arrow) on the back side.

[0028] Furthermore, the powder screening machine provided in this embodiment is also equipped with a screen hole cleaning device (not shown in the figure). The screen hole cleaning device is elongated and is located on the outer wall surface of the rotating drum 2 along its length, that is, parallel to the rotating shaft of the rotating drum 2 and spanning the outer wall surface of the rotating drum 2. Specifically, the screen hole cleaning device is a high-pressure air knife, which is installed on the frame 1. When the rotating drum 2 rotates, the high-pressure air knife does not rotate. 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 air blowing range of the high-pressure air knife can cover the entire area of ​​the side wall of the rotating drum 2.

[0029] Working principle:

[0030] When the power is turned on, the motor drives the drive gear 3 to rotate, which in turn drives the driven gear 4 to rotate, causing the rotating drum 2 to begin rotating on the frame 1. The coarse powder to be screened enters the rotating drum 2 through the feed inlet 11. As the drum 2 rotates, the scraper 6 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 5. During machine operation, the dividing support 7 is pulled back in the opposite direction of the rotating drum 2's rotation by the spring 9, preventing the dividing support 7 and scraper 6 from being displaced by the friction generated with the inner wall of the drum 2 during prolonged rotation. During the rotation of the drum 2, the screen cleaning device 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 fails to pass through the screen holes reaches the other end of the drum 2 and is discharged through the discharge outlet 12, thus completing the powder screening process.

[0031] 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, comprising a frame and a rotating drum, the rotating drum being cylindrical, the rotating drum being horizontally placed on the frame, the drum wall having sieve holes, and a scraper being installed inside the drum, one side of the scraper contacting or having a gap with the inner wall surface of the drum, characterized in that, It is also equipped with a screen hole cleaning device, which is long and strip-shaped and is located on the outer wall surface of the rotating cage along the length of the rotating cage. The screen hole cleaning device is a high-pressure air knife, and the air blowing direction of the high-pressure air knife is towards the rotating shaft of the rotating cage.

2. The powder screening machine according to claim 1, characterized in that, The scraper is long and narrow, with the longer side of the scraper close to the inner wall surface of the rotating drum, and the gap between the two is between 0 and 30 mm.

3. The powder screening machine according to claim 1, characterized in that, A shaft support that penetrates the inner cavity of the rotating cage is installed on the frame, and a sub-support is installed on the shaft support. A scraper is installed at the end of the sub-support.

4. The powder screening machine according to claim 3, characterized in that, The stent may be one or more.

5. The powder screening machine 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.

6. The powder screening machine 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.

7. The powder screening machine 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.

8. The powder screening machine according to claim 1, characterized in that, The sieve hole cleaning device is fixedly installed on the frame.

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