Grain detection high-efficiency powder screen

Abstract

The utility model provides a kind of high-efficiency powder screen for grain detection, it includes screen grid, the screen grid has the tubular casing with opening in both ends, the bottom of screen grid is sequentially spaced with screen and bottom frame from top to bottom, cleaning member is placed between screen and bottom frame, the cleaning member respectively with screen and bottom frame movable contact, characterized in that: the cleaning member includes multiple, the bottom frame is equipped with multiple annular guide rail parts, the cleaning member can move under the restriction of the annular guide rail part. The utility model can ensure that each cleaning member can effectively rotate, efficiently moves, and further ensure the efficient cleaning of screen, finally effectively ensure the rapid and efficient screening of grain powder.

Description

Technical Field

[0001] This utility model relates to the field of grain and oil testing technology, specifically a high-efficiency powder sieve for grain testing. Background Technology

[0002] In grain testing projects, a circular powder sieve is typically used to sieve grain powder samples ground to a certain fineness for coarseness testing. The principle is as follows: a sieve assembly is fixedly installed on a rotating tray capable of planar eccentric rotation. The sieve assembly consists of multiple sieves with different mesh sizes arranged sequentially from top to bottom. The sieve assembly rotates eccentrically with the rotating tray, thus sieving the powder sample through the sieves sequentially. To improve sieving efficiency, Chinese Patent Application No. 2012200399982 discloses a powder sieve, which includes a screen at the bottom of the sieve and a cleaning block support below the screen. A freely movable cleaning component is placed between the screen and the cleaning block support. The screen has a small aperture for sieving grain powder samples ground to a certain fineness. The cleaning block support is a planar metal mesh with a larger aperture, serving as a support surface for the cleaning component without obstructing the sieving of the powder sample. When the sieve rotates, the cleaning component moves freely to clean the sieve. However, existing freely movable cleaning components have the following drawbacks: 1. Because the sieve rotates in a predetermined direction, the cleaning component is easily and invisibly confined to a small range of movement, rather than rotating widely along the cleaning block supporting the sieve, thus limiting the cleaning effect; 2. To improve the cleaning effect, multiple (usually three) freely movable cleaning components are often added. While multiple components increase contact with the sieve, they are prone to jamming during free movement, hindering efficient operation. Therefore, improvement is necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a high-efficiency grain sieve for testing, in order to overcome the shortcomings of the aforementioned background technology.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A high-efficiency grain sieve includes a sieve grid with a cylindrical shell open at both ends. A screen and a bottom frame are arranged sequentially from top to bottom at the bottom of the sieve grid. A cleaning component is placed between the screen and the bottom frame, and the cleaning component is movably in contact with both the screen and the bottom frame. The cleaning component is characterized by comprising multiple cleaning components, and the bottom frame is provided with multiple annular guide rails, allowing the cleaning component to move under the constraint of the annular guide rails.

[0006] The mating structure between the cleaning component and the annular guide rail can be as follows: the bottom frame is a mesh-like metal plate structure, the annular guide rail is an annular groove on the bottom frame, the bottom of the cleaning component is located in the annular groove and can move along the annular groove, and one cleaning component is provided in each annular groove.

[0007] The cooperation structure between the cleaning component and the annular guide rail can also be as follows: the bottom frame is a metal frame structure, which is composed of at least 3 bottom rods evenly distributed along the radial direction of the sieve grid; the annular guide rail is an annular rod part set on the bottom frame; the bottom of the cleaning component has a slot; the cleaning component is movably placed on the top of the annular rod part by the slot and then moves along the annular rod part; one cleaning component is set on each annular rod part.

[0008] Furthermore, the cross-section of the annular rod is inverted T-shaped.

[0009] The cooperation structure between the cleaning component and the annular guide rail can also be as follows: the bottom frame is a grid-shaped metal plate structure, the annular guide rail is an annular baffle vertically arranged on the bottom frame, annular limiting grooves are formed on both sides of the annular baffle, the cleaning component is placed in the annular limiting groove and can move along the annular limiting groove, and one cleaning component is provided in each annular limiting groove.

[0010] In the optimized design, the annular guide rail and the sieve grid are either concentrically or eccentrically arranged.

[0011] In a further optimized design, the cleaning component has a slider at the bottom and a cleaning part at the top. The bottom surface of the slider is an arc-shaped bottom surface for contacting the bottom frame, and the cleaning part consists of several evenly distributed brushes or several protrusions.

[0012] This utility model has the following substantial features and advancements:

[0013] This invention utilizes the cooperation between the cleaning component and the annular guide rail of the bottom frame. First, the annular guide rail enables the cleaning component to rotate circumferentially along the screen grid, thus completely covering the screen and ensuring full contact with it. Furthermore, multiple cleaning components are arranged in multiple layers along the screen grid, both inside and out, for comprehensive and efficient cleaning of the screen. Second, the annular guide rail allows the multiple cleaning components to rotate on staggered tracks, preventing collisions and jamming, ensuring that each component can rotate effectively and move efficiently, thereby guaranteeing efficient cleaning of the screen. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the high-efficiency grain detection sieve in Example 1.

[0015] Figure 2 This is a top view schematic diagram of the high-efficiency grain detection sieve of Example 1.

[0016] Figure 3 This is a top view schematic diagram of the high-efficiency grain detection sieve of Example 2.

[0017] Figure 4 This is a schematic diagram of the structure of the high-efficiency grain detection sieve in Example 3.

[0018] Figure 5 This is a top view schematic diagram of the high-efficiency grain detection sieve of Example 3.

[0019] Figure 6 and Figure 7 This is a schematic diagram of the assembly state of the cleaning component and the bottom frame in Example 3.

[0020] Figure 8 This is a top view schematic diagram of the high-efficiency grain detection sieve in Example 4.

[0021] Figure 9 This is a schematic diagram of the structure of the high-efficiency grain detection sieve in Example 5.

[0022] Figure 10 This is a top view schematic diagram of the high-efficiency grain detection sieve in Example 5.

[0023] Figure 11 This is a top view schematic diagram of the high-efficiency grain detection sieve of Example 6. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] A high-efficiency grain testing sieve includes a sieve grid 1, which has a cylindrical shell with openings at both ends. The bottom of the sieve grid 1 is provided with a screen 2 and a bottom frame 3 arranged sequentially from top to bottom. A cleaning component 4 is placed between the screen 2 and the bottom frame 3, and the cleaning component 4 is in movable contact with the screen 2 and the bottom frame 3 respectively.

[0026] The cleaning component 4 has a slider part 41 at the bottom and a cleaning part 42 at the top. The bottom surface of the slider part 41 is an arc-shaped bottom surface for contacting the bottom frame 3. The cleaning part 42 is composed of several evenly distributed brushes or several protrusions.

[0027] The cleaning component 4 includes multiple components, and the bottom frame 3 is provided with multiple annular guide rails, which allow the cleaning component 4 to move under the restriction of the annular guide rails.

[0028] In addition, the following Examples 1 to 6 will describe the specific mating structure between the cleaning component 4, the bottom frame 3, and the annular guide rail.

[0029] Example 1

[0030] For details, please refer to the following: Figure 1 and Figure 2 In this embodiment, the bottom frame 3 is a mesh-like metal plate structure, and the annular guide rail is an annular groove 5 disposed on the bottom frame 3 and concentrically disposed with the sieve grid 1. The bottom of the cleaning component 4 is located within the annular groove 5 and can move along the annular groove 5. One cleaning component 4 is disposed in each annular groove 5.

[0031] In this embodiment, during the rotation of the powder sieve, the cleaning component 4 rotates along the annular groove 5 with the sieve grid 1. Each cleaning component 4 moves under the constraint of its corresponding annular groove 5, preventing interference or jamming. Furthermore, the annular groove 5 completely covers the circumference of the sieve grid 1, ensuring full contact with the screen 2. Combined with multiple cleaning components 4 (specifically two in this embodiment), arranged in a double-layered pattern along the sieve grid 1, the screen is thoroughly and efficiently cleaned.

[0032] Example 2

[0033] For details, please refer to the following: Figure 3 The difference between this embodiment and Embodiment 1 is that the annular groove 5 and the sieve 1 are eccentrically arranged. The technical purpose of the eccentric arrangement in this embodiment is that, since the powder sieve undergoes eccentric rotary motion, the annular groove 5 in this embodiment is also eccentrically arranged. This eccentrically arranged annular guide rail is more conducive to the cleaning component 4 rotating eccentrically along the sieve 1 along the annular groove 5.

[0034] It should be noted that when using the screen 1 fixed on the rotary tray (not shown in the figure), the center position of the annular groove 5, that is, the eccentric position, should be placed as close as possible to the center position of the eccentric rotation of the rotary tray. This will make the eccentric rotation of the cleaning component 4 along the annular groove 5 as consistent as possible with the eccentric rotation of the rotary tray, so that the cleaning component 4 can rotate more efficiently and further improve the cleaning effect on the screen.

[0035] Example 3

[0036] For details, please refer to the following: Figures 4 to 7 In this embodiment, the bottom frame 3 is a metal frame structure, which is composed of at least three bottom rods 31 evenly distributed radially along the sieve grid 1. The annular guide rail is an annular rod 6 disposed on the bottom frame 3 and is concentrically arranged with the sieve grid 1. The bottom of the cleaning component 4 has a slot 40, and the cleaning component 4 is movably placed on the top of the annular rod 6 by the slot 40 and then moves along the annular rod 6. One cleaning component 4 is disposed on each annular rod 6.

[0037] In this embodiment, the annular rod 6 limits the movement of the cleaning component 4 to prevent it from derailing during rotation. This allows multiple cleaning components 4 to rotate along their respective annular guide rails without interfering with or getting stuck. Furthermore, the combined effect of multiple cleaning components 4 (specifically two in this embodiment) arranged in a double-layered pattern along the screen grid ensures comprehensive and efficient cleaning of the screen. Additionally, the bottom frame 3 is constructed from a bottom rod 31 and an annular rod 6, a simpler structure that uses less material and is less expensive. Moreover, the bottom frame 3 provides minimal obstruction to the powder falling from above, facilitating rapid powder sieving.

[0038] For further details, please refer to [link / reference]. Figure 6 and Figure 7 The cross-section of the annular rod 6 is inverted T-shaped. The inverted T-shaped annular rod 6 guides and supports the cleaning component 4, which is more conducive to the stable rotation of the cleaning component 4.

[0039] Example 4

[0040] For details, please refer to the following: Figure 8 The difference between this embodiment and embodiment 3 is that the annular rod 6 and the sieve grid 1 are eccentrically arranged. The technical purpose of the eccentric arrangement in this embodiment is the same as that in embodiment 2.

[0041] Example 5

[0042] For details, please refer to the following: Figure 9 and Figure 10 In this embodiment, the bottom frame 3 is a grid-like metal plate structure, and the annular guide rail is an annular baffle 7 vertically arranged on the bottom frame 3 and concentrically arranged with the sieve grid 1. Annular limiting grooves 70 are formed on both sides of the annular baffle 7, and the cleaning component 4 is placed in the annular limiting groove 70 and can move along the annular limiting groove 70. One cleaning component 4 is arranged in each annular limiting groove 70.

[0043] In this embodiment, the cleaning component 4 moves freely within the annular limiting groove 70 without interfering with or getting stuck. In addition, multiple cleaning components 4 are used, specifically three in this embodiment, arranged in three layers along the screen grid 1, thereby achieving comprehensive and efficient cleaning of the screen.

[0044] Example 6

[0045] For details, please refer to the following: Figure 11 The difference between this embodiment and embodiment 5 is that the annular baffle 7 and the sieve 1 are eccentrically arranged. The technical purpose of the eccentric arrangement in this embodiment is the same as that in embodiment 2.

Claims

1. A high-efficiency grain sieve for testing, comprising a sieve grid (1), the sieve grid (1) having a cylindrical shell with openings at both ends, a sieve mesh (2) and a bottom frame (3) arranged sequentially from top to bottom at the bottom of the sieve grid (1), a cleaning component (4) being placed between the sieve mesh (2) and the bottom frame (3), the cleaning component (4) being in movable contact with the sieve mesh (2) and the bottom frame (3), characterized in that: The cleaning component (4) includes multiple components, and the bottom frame (3) is provided with multiple annular guide rails. The cleaning component (4) can move under the restriction of the annular guide rails.

2. The high-efficiency grain sieve according to claim 1, characterized in that: The bottom frame (3) is a mesh-like metal plate structure. The annular guide rail is an annular groove (5) set on the bottom frame (3). The bottom of the cleaning component (4) is located in the annular groove (5) and can move along the annular groove (5). One cleaning component (4) is set in each annular groove (5).

3. The high-efficiency grain sieve according to claim 1, characterized in that: The bottom frame (3) is a metal frame structure, which is composed of at least 3 bottom rods (31) evenly distributed radially along the sieve (1). The annular guide rail is an annular rod (6) set on the bottom frame (3). The bottom of the cleaning component (4) has a slot (40). The cleaning component (4) is movably placed on the top of the annular rod (6) by the slot (40) and then moves along the annular rod (6). One cleaning component (4) is set on each annular rod (6).

4. The high-efficiency grain sieve according to claim 3, characterized in that: The cross-section of the annular rod (6) is inverted T-shaped.

5. The high-efficiency grain sieve according to claim 1, characterized in that: The bottom frame (3) is a mesh-like metal plate structure. The annular guide rail is an annular baffle (7) vertically arranged on the bottom frame (3). Annular limiting grooves (70) are formed on both sides of the annular baffle (7). The cleaning component (4) is placed in the annular limiting groove (70) and can move along the annular limiting groove (70). One cleaning component (4) is provided in each annular limiting groove (70).

6. A high-efficiency grain sieve according to any one of claims 1 to 5, characterized in that: The annular guide rail and the sieve (1) are either concentric or eccentrically arranged.

7. A high-efficiency grain sieve according to any one of claims 1 to 5, characterized in that: The cleaning component (4) has a slider part (41) at the bottom and a cleaning part (42) at the top. The bottom surface of the slider part (41) is an arc-shaped bottom surface for contacting the bottom frame (3). The cleaning part (42) is composed of several evenly distributed brushes or several protrusions.

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