Screening device and grinding machine

Abstract

The utility model discloses a screening device and a grinding miller, and relates to flux product sample preparation and is used for screening materials generated by the grinding miller, the screening device comprises a main screen body and a second screen body, the thickness of the main screen body is 0.2 mm, the main screen body is arranged at a discharging opening of the grinding miller, and a first screen mesh used for screening the materials is arranged on the main screen body; and the supporting screen body is used for supporting the main screen body, the supporting screen body is fixed to the side, away from the grinding machine, of the main screen body, and supporting mesh wires attached to the first screen mesh are arranged on the supporting screen body. The ultra-thin main screen body and the ultra-thin screen mesh are arranged, so that it is avoided that due to the fact that materials are attached to the screen holes and calcified, the screen holes become small, meanwhile, the supporting screen body is arranged, the overall hardness of the screening device is guaranteed through supporting, and under the condition that the production requirement is met, the failure rate of the screen mesh is increased, and the service life of the screen mesh is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of sample preparation of flux products, and specifically relates to a screening device and a grinder. Background Art

[0002] In the fully automatic sample preparation production process of flux clinker, one of the equipment for sample preparation is the grinding machine. The working mode is that after the sample is crushed to 3mm, it enters the grinding chamber for grinding. The flywheel in the grinding chamber rotates rapidly to rotate and cut and crush the material. The material that reaches the specified particle size passes through the screen under the centrifugal force generated by the flywheel in the grinding chamber for the next step of processing. The grinder screen is a single-layer screen with a thickness of 1mm. Due to the high CaO content in the flux clinker (some CaO content is as high as 95% or more) and the sticky material, the material is very easy to adhere and accumulate at the screen hole when passing through the screen, and the material is calcified, and the screen hole gradually becomes smaller, which leads to the blockage of the screen. The material accumulates in the grinding chamber, causing the flywheel of the grinder to block the material and trip. Due to the characteristics of the material and calcification, the traditional screen cannot be used after making about 10 batches of screens. The utilization rate of the screen is low, resulting in a high equipment failure rate. Summary of the invention

[0003] The purpose of the present application is to provide a screening device and a grinder, aiming to solve, at least to a certain extent, the technical problem that the de-fluxing clinker accumulates and calcifies at the sieve holes of the sieve, resulting in the sieve holes becoming smaller and clogged, the sieve being damaged, and the sieve having a short service life.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] A first aspect of an embodiment of the present application provides a screening device for screening materials produced by a grinding machine, the screening device comprising: a main screen body with a thickness of 0.2 mm, the main screen body being arranged at the discharge port of the grinding machine, the main screen body being provided with a first screen for screening materials; a supporting screen body for supporting the main screen body, the supporting screen body being fixed to a side of the main screen body away from the grinding machine, the supporting screen body being provided with a supporting mesh wire that is in contact with the first screen.

[0006] In some embodiments, the main screen body is annular, and is provided with a mounting notch connected to the grinder.

[0007] In some embodiments, the main screen body is made of high-strength stainless steel.

[0008] In some embodiments, the first screen is disposed in the middle of the main screen body, and the width of the first screen is 30 mm to 50 mm, and the length is 210 mm to 220 mm.

[0009] In some embodiments, the diameter of the mesh holes on the sieve is 160 um to 200 um.

[0010] In some embodiments, the mesh is spaced at least 2 mm from the end of the main screen body.

[0011] In some embodiments, the supporting screen body is annular and fits the outer edge of the main screen body.

[0012] In some embodiments, the thickness of the supporting screen body is 0.8 mm.

[0013] In some embodiments, the supporting mesh wire is in contact with the first screen and has the same size as the first screen, and the mesh size on the supporting mesh wire is 2mm*10mm.

[0014] A second aspect of an embodiment of the present application provides a grinding machine, wherein the screening device is provided at the feed inlet of the grinding machine.

[0015] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0016] A screening device in the present application, by providing an ultra-thin main screen body, the extremely thin screen thickness prevents the material from adhering to the screen holes and calcifying to cause the screen holes to become smaller. At the same time, by providing a supporting screen body, the support ensures the overall hardness of the screening device, thereby improving the failure rate and service life of the screen while meeting production needs.

[0017] A grinding machine in the present application, by providing a screening device, an ultra-thin main screen body and an extremely thin screen thickness prevent the material from adhering to the screen holes and calcifying to cause the screen holes to become smaller. At the same time, by providing a supporting screen body, the support ensures the overall hardness of the screening device, thereby improving the failure rate and service life of the screen while meeting production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a screening device in an embodiment of the present application.

[0020] The reference numerals are described as follows: 1, main screen body; 12, first screen mesh; 2, supporting screen body; 21, supporting mesh wire. DETAILED DESCRIPTION

[0021] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] Figure 1 is a schematic diagram of the structure of a screening device in an embodiment of the present application, such as Figure 1 As shown, the device is used to screen the materials produced by the grinding machine, and the screening device includes: a main screen body 1 with a thickness of 0.2 mm, the main screen body 1 is arranged at the feed port of the grinding machine, and the main screen body 1 is provided with a first screen 12 for screening materials; a supporting screen body 2, used to support the main screen body 1, the supporting screen body 2 is fixed to the side of the main screen body 1 away from the grinding machine, and the supporting screen body 2 is provided with a supporting mesh wire 21 that fits the first screen 12. By setting an ultra-thin main screen body 1, the extremely thin screen thickness avoids the material from adhering to the screen hole and calcification to reduce the screen hole. At the same time, by setting the supporting screen body 2, the support ensures the overall hardness of the screening device, and improves the failure rate and service life of the screen while meeting production needs.

[0023] In some embodiments, the main screen body 1 is annular, and is provided with a mounting notch connected to the grinder.

[0024] In some embodiments, the main screen body 1 is made of high-strength stainless steel. Specifically, the high-strength stainless steel can be semi-austenitic precipitation hardening stainless steel or martensitic precipitation hardening stainless steel or martensitic aging steel.

[0025] In some embodiments, the first screen 12 is disposed in the middle of the main screen body 1, and the first screen 12 has a width of 40 mm and a length of 222 mm. Specifically, the first screen 12 is prepared by chemical etching process.

[0026] In some embodiments, the diameter of the mesh holes on the mesh is 180 um.

[0027] In some embodiments, the mesh is spaced at least 2 mm from the end of the main sieve body 1 to ensure the surface hardness of the main sieve body 1 .

[0028] In some embodiments, the supporting screen body 2 is annular, and the supporting screen body 2 is in contact with the outer edge of the main screen body 1. The main screen body 1 is supported by the supporting screen body 2.

[0029] In some embodiments, the thickness of the supporting screen body 2 is 0.8 mm.

[0030] In some embodiments, the supporting mesh wire 21 is fitted with the first screen 12 and has the same size as the first screen 12, and the mesh size of the supporting mesh wire 21 is 2 mm*10 mm. Specifically, the supporting screen is prepared by laser cutting process.

[0031] The second aspect of the embodiment of the present application provides a grinder, wherein the screening device is provided at the feed port of the grinder. The prepared screening device is installed at the feed port of the grinder, and fixing bolts are installed on the main screen body 1 to fix it to the grinder. By providing the screening device, the ultra-thin main screen body 1 and the extremely thin screen thickness prevent the material from adhering to the screen holes and calcifying to reduce the screen holes. At the same time, by providing the supporting screen body 2, the support ensures the overall hardness of the screening device, thereby improving the failure rate and service life of the screen while meeting production requirements.

[0032] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0033] A screening device in the present application, by providing an ultra-thin main screen body, the extremely thin screen thickness prevents the material from adhering to the screen holes and calcifying to cause the screen holes to become smaller. At the same time, by providing a supporting screen body, the support ensures the overall hardness of the screening device, thereby improving the failure rate and service life of the screen while meeting production needs.

[0034] A grinding machine in the present application, by providing a screening device, an ultra-thin main screen body and an extremely thin screen thickness prevent the material from adhering to the screen holes and calcifying to cause the screen holes to become smaller. At the same time, by providing a supporting screen body, the support ensures the overall hardness of the screening device, thereby improving the failure rate and service life of the screen while meeting production needs.

[0035] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A screening device for screening materials produced by a grinding machine, characterized in that: The screening device comprises: A main screen body, with a thickness of 0.2 mm, is arranged at the feed inlet of the grinder, and is provided with a first screen for screening materials; The supporting screen body is used to support the main screen body. The supporting screen body is fixed to a side of the main screen body away from the grinder. The supporting screen body is provided with a supporting mesh wire that fits the first screen.

2. The screening device according to claim 1, characterized in that: The main screen body is annular and is provided with a mounting notch connected to the grinder.

3. The screening device according to claim 2, characterized in that: The main screen body is made of high-strength stainless steel.

4. The screening device according to claim 2, characterized in that: The first screen is arranged in the middle of the main screen body, and the width of the first screen is 30mm-50mm, and the length is 210mm-220mm.

5. The screening device according to claim 4, characterized in that: The diameter of the mesh holes on the sieve is 160um to 200um.

6. The screening device according to claim 4, characterized in that: The screen mesh is spaced at least 2 mm from the end of the main screen body.

7. The screening device according to claim 2, characterized in that: The supporting screen body is annular and fits the outer edge of the main screen body.

8. The screening device according to claim 2, characterized in that: The thickness of the supporting screen body is 0.8 mm.

9. The screening device according to claim 4, characterized in that: The supporting mesh wire is in contact with the first screen and has the same size as the first screen. The mesh size of the supporting mesh wire is 2mm*10mm.

10. A grinding machine, characterized in that: The feed inlet of the grinder is provided with a screening device as claimed in any one of claims 1 to 9.

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