Scraper knife structure of calcium hydroxide selecting and grinding all-in-one machine

Abstract

The utility model discloses a calcium hydroxide selecting and grinding all-in-one machine scraper knife structure which comprises a material shoveling plate, the material shoveling plate comprises an upper plate body and a middle-lower plate body, the middle-lower plate body is provided with a material protection baffle I on the inner side and a material protection baffle II on the outer side, the height of the material protection baffle II is at least 1 / 2 of the width of the middle-lower plate body, and the height of the material protection baffle II is at least 1 / 2 of the width of the middle-lower plate body. The height of the material protection baffle I is at least 1 / 3 of the width of the middle lower plate body; the lower portion of the material protection baffle I, the lower portion of the material protection baffle II and the bottom of the middle lower plate body jointly form a horn-shaped material shoveling opening. A plurality of drainage plates located at different height positions are arranged on the upper portion of the inner side of the material protection baffle II, all the drainage plates are parallel to the middle-lower-portion plate body, and the width of each drainage plate is not larger than one third of the width of the middle-lower-portion plate body. The bottom of the shoveling opening is in an arc shape which is concave inwards in the feeding direction. According to the utility model, material collection is facilitated, materials can be prevented from flowing out under the action of centrifugal force, the effective working area is increased, and the efficiency and the yield are improved.

Description

Technical Field

[0001] The utility model relates to a supporting component of a grinding device, in particular to a scraper structure of a calcium hydroxide selection and grinding integrated machine. Background Art

[0002] The calcium hydroxide digested by the digester is screened through a drum screen and then enters a special calcium hydroxide selection and grinding machine for selection and grinding. The scraper on the feeding device of the selection and grinding machine scoops up the digested calcium hydroxide material and sends it to the grinding area formed between the grinding roller and the grinding ring for fine grinding.

[0003] The technical defects of the original blade are:

[0004] 1. The blade mouth is straight. When there is a lot of material at the blade mouth, it is easy for the material to flow to both sides, resulting in poor shoveling effect.

[0005] 2. In the scraper structure, the height of the outer material protection plate is relatively low, and the specific gravity of the digested calcium hydroxide is relatively light. After entering the scraper, some of the material is easy to float up, cross the outer material protection plate and float to the outside return air box.

[0006] 3. The scraper structure does not have a guide plate, and the materials are sent to the grinding area at basically the same height position, which does not cover the entire effective height range of the grinding, and the grinding efficiency is low.

[0007] 4. The materials scooped up by the blade will accumulate in a limited area of ​​the grinding area, causing uneven wear of the grinding roller and grinding ring, thereby increasing production costs. Utility Model Content

[0008] In order to solve the deficiencies of the prior art, the utility model proposes a scraper structure for a calcium hydroxide selection and grinding machine.

[0009] The scraper structure of the calcium hydroxide selection and grinding machine that can solve the problems of the prior art, the technical solution thereof includes a scraper plate, the scraper plate includes an upper plate body and a middle and lower plate body, the middle and lower plate body is provided with an inner material protection baffle plate I and an outer material protection baffle plate II, the difference is that:

[0010] 1. The height of the material protection baffle II is at least 1 / 2 of the width of the middle and lower plate body, and the height of the material protection baffle I is at least 1 / 3 of the width of the middle and lower plate body.

[0011] 2. The lower part of the material protection baffle plate I, the lower part of the material protection baffle plate II and the lower part of the middle and lower plate body together form a trumpet-shaped shoveling opening.

[0012] Furthermore, a plurality of guide plates at different heights are provided on the inner upper part of the material protection baffle II, and each guide plate is parallel to the middle and lower plate body.

[0013] Furthermore, the width of the guide plate is not greater than 1 / 3 of the width of the middle and lower plate body.

[0014] Furthermore, the bottom of the shoveling opening is in an arc shape that is concave along the feeding direction.

[0015] Beneficial effects of the utility model:

[0016] 1. In the structure of the utility model, the bottom of the shovel opening is designed to be arc-shaped, and the shovel opening is a trumpet-shaped mouth, which can effectively prevent the material from running to both sides when there is a lot of shovel material, is conducive to the gathering of materials, and allows the materials to enter the shovel blade better.

[0017] 2. A part of the digested calcium hydroxide is powder with a relatively light specific gravity. After entering the shovel, it is easy to float under the action of force. If the height of the outer guard plate is not enough, the powder is easy to fall into the return air box under the action of centrifugal force. For this reason, in the structure of the utility model, the use of a heightened material baffle II can effectively prevent the material from flowing out under the action of centrifugal force, and the heightened material baffle I can also effectively prevent the material from overflowing inward.

[0018] 3. In the structure of the utility model, a multi-layer guide plate is provided on the upper side of the material protection baffle II, which can send the material to different heights, thereby covering the entire grinding area, so that the upper, middle and lower parts between the grinding roller and the grinding ring can be ground, so that the wear is even, and at the same time, the effective working area is increased, the output of the machine is increased, and the grinding efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an implementation method of the utility model.

[0020] Figure 2 It is a structural schematic diagram of another implementation mode of the utility model.

[0021] Figure number identification: 1. Upper plate; 2. Middle and lower plate; 3. Material protection baffle I; 4. Material protection baffle II; 5. Drainage plate. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the implementation modes shown in the accompanying drawings.

[0023] Embodiment 1, as Figure 1 As shown:

[0024] The utility model discloses a scraper structure of a calcium hydroxide selection and grinding machine, which comprises an inclined scraper plate, wherein the scraper plate comprises an upper plate body 1 (triangular plate) and a middle and lower plate body 2 (arc plate).

[0025] A material protecting baffle Ⅰ3 (arc-shaped) is provided on the inner edge of the middle and lower plate body 2, and a material protecting baffle Ⅱ4 (arc-shaped) is provided on the outer edge of the middle and lower plate body 2. The height of the material protecting baffle Ⅱ4 is at least 1 / 2 of the width of the middle and lower plate body 2, and the height of the material protecting baffle Ⅰ3 is at least 1 / 3 of the width of the middle and lower plate body 2.

[0026] The lower part of the material protecting baffle I3 is bent inward, and the lower part of the material protecting baffle II4 is bent outward. The lower part of the middle and lower plate body 2 is locally enlarged as the material protecting baffle is bent, and the bottom of the middle and lower plate body 2 is concave inward in an arc shape along the feeding direction. The lower part of the material protecting baffle I3, the lower part of the material protecting baffle II4 and the lower part of the middle and lower plate body 2 together form a trumpet-shaped shoveling port.

[0027] Embodiment 2, as Figure 2 As shown:

[0028] The difference between the second embodiment and the first embodiment lies in the additional structure of the material protection baffle II4.

[0029] A plurality of drainage plates 5 are provided on the inner upper part of the material protection baffle II 4 , and each drainage plate 5 is parallel to the middle and lower plate body 2 and is equidistantly located at different height positions on the inner side of the material protection baffle II 4 .

Claims

1. A scraper structure of a calcium hydroxide grinding machine, comprising a scraper plate, wherein the scraper plate comprises an upper plate body (1) and a middle and lower plate body (2), wherein the middle and lower plate body (2) is provided with an inner material protection baffle plate I (3) and an outer material protection baffle plate II (4), characterized in that: The height of the material protection baffle II (4) is at least 1 / 2 of the width of the middle and lower plate body (2), and the height of the material protection baffle I (3) is at least 1 / 3 of the width of the middle and lower plate body (2); The lower part of the material protection baffle plate I (3), the lower part of the material protection baffle plate II (4) and the lower part of the middle and lower plate body (2) together form a trumpet-shaped shoveling opening; A plurality of guide plates (5) at different heights are provided on the inner upper part of the material protection baffle II (4), each guide plate (5) is parallel to the middle and lower plate body (2), and the width of the guide plate (5) is not greater than 1 / 3 of the width of the middle and lower plate body (2).

2. The scraper structure of the calcium hydroxide grinding machine according to claim 1 is characterized in that: The bottom of the shoveling opening is in an arc shape which is concave inwardly along the feeding direction.

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