CN214357920U

CN214357920U - Low-grade limestone proportioning bin

Info

Publication number: CN214357920U
Application number: CN202120389244.9U
Authority: CN
Inventors: 靳银周; 李瑞玲; 朱存玲; 赵晓华; 张红荣; 张东阳
Original assignee: Tianrui Xindeng Zhengzhou Cement Co ltd
Current assignee: Tianrui Xindeng Zhengzhou Cement Co ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-10-08
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to a low-grade limestone proportioning bin, the bottom of a bin body is provided with a conical blanking hopper, the bottom of the blanking hopper is provided with a circular blanking hole, the blanking hole is provided with a blanking bin, a spiral discharging mechanism is arranged in the blanking bin, a blanking plate is arranged in the blanking hopper, and the blanking plate is provided with a plurality of blanking holes; the center of flitch down is equipped with the bellied center branch material awl that makes progress, and the end circle diameter of center branch material awl is more than or equal to two-thirds of the diameter of feed opening, and is less than or equal to four fifths of the diameter of feed opening. According to the feeding device, the annular feeding plate is arranged in the conical feeding hopper, the feeding hole is formed in the feeding plate, and the center of the feeding plate is provided with the center distributing cone protruding upwards, so that part of gravity of materials in the bin body is borne by the feeding plate and the center distributing cone and does not directly act on the feeding hole of the feeding hopper; the damage of the spiral discharging mechanism in the discharging bin below the discharging opening due to overlarge stress can be avoided.

Description

Low-grade limestone proportioning bin

Technical Field

The utility model relates to a cement manufacture technique, especially a low-grade lime stone proportioning bins.

Background

Limestone is a trade name of limestone as a mineral raw material, and the main component is calcium carbonate, which is widely used due to the characteristics of wide distribution and easy acquisition in nature. As an important building material, the limestone has a long mining history, and in the modern industry, the limestone is a main raw material for manufacturing cement, lime and calcium carbide. Limestone is an unrenewable resource, the national proven limestone storage amount is only 450 hundred million tons, and the national production needs can be met only for 30-50 years, so that the major limestone resource is one of measures for realizing the development strategy of large enterprise groups. In recent years, with the rapid development of the cement industry, the consumption of limestone increases year by year, and in order to realize the effective utilization of limestone resources, most manufacturers begin to research the application of low-grade limestone in cement production to reduce the production cost.

In the cement production process, low-grade limestone needs to be proportioned and stored, such as the limestone bin proportioning bin disclosed by the Chinese patent document with the publication number of CN208394019U, which comprises a bin body, wherein the top end of the bin body is provided with a top cover, one side of the bin body is provided with a transparent observation window, support columns are arranged at four corners of the bottom end of the bin body, an installation block is arranged in the bin body, a discharging plate is arranged on the installation block, the bottom of the bin body is connected with a discharging bin, a discharging box is arranged in the discharging bin, an auger is arranged in the discharging box, two ends of the auger are arranged on the discharging box through bearings, a motor is arranged at one side of the discharging box, a discharging pipe is connected with the bottom end of the other end of the discharging box, springs are arranged in two sides of the discharging box, the discharging box is connected with the fixed block through springs, and a bearing roller is arranged at the bottom end of the discharging box, the discharging box is convenient to maintain and replace and is more convenient to use. However, in the dispensing bin disclosed in this document, the auger in the discharge bin directly bears the weight of the material in the bin body, and is easily damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low-grade lime stone proportioning bins for the bottom export of solving current proportioning bins directly bears the problem that the interior material gravity of feed bin leads to discharging mechanism fragile.

In order to solve the problems, the utility model provides a low-grade limestone proportioning bin, which comprises a cylindrical bin body, wherein the bottom end of the bin body is provided with a conical blanking hopper, the bottom end of the blanking hopper is provided with a circular blanking hole, the blanking hole is provided with a discharging bin, a spiral discharging mechanism is arranged in the discharging bin, the bottom of the discharging bin is provided with a discharging hole corresponding to the spiral discharging mechanism, a ring-shaped blanking plate which is positioned in the middle of the blanking hopper is arranged in the blanking hopper, and the blanking plate is provided with a plurality of blanking holes; the center of the blanking plate is provided with a central material distributing cone protruding upwards, and the diameter of the bottom circle of the central material distributing cone is more than or equal to two thirds of the diameter of the blanking port and less than or equal to four fifths of the diameter of the blanking port; the distance between the top of the central material-distributing cone and the top cover of the bin body is more than or equal to one fourth of the height of the bin body and less than or equal to one third of the height of the bin body, and the cone angle of the central material-distributing cone is more than or equal to 10 degrees and less than or equal to 25 degrees.

The utility model provides a low-grade lime stone proportioning bins still has following technical characteristic:

furthermore, a cylindrical support plate is arranged on the lower side of the outer edge of the blanking plate, and the lower edge of the support plate is fixedly connected with the inner wall of the blanking hopper.

Furthermore, the upper side of the outer edge of the blanking plate is provided with a connecting plate which extends outwards and is in a cone shape, and the upper edge of the connecting plate is fixedly connected with the inner wall of the blanking hopper.

Furthermore, the section of the discharge bin is semicircular, and the lower edge of a helical blade of the helical discharge mechanism is tangent to the inner wall of the bottom of the discharge bin.

Furthermore, the spiral discharging mechanism further comprises a motor and a speed reducer which are fixed on the side wall of the discharging bin.

Further, a plurality of the blanking holes are uniformly arranged on the blanking plate by taking the central axis of the bin body as the center.

The utility model discloses following beneficial effect has: an annular blanking plate is arranged in a conical blanking hopper, a blanking hole is formed in the blanking plate, and an upward-protruding central distributing cone is arranged in the center of the blanking plate, so that partial gravity of materials in the hopper body is borne by the blanking plate and the central distributing cone and does not directly act on a blanking port of the blanking hopper; the diameter of the bottom circle of the central material dividing cone is more than or equal to two thirds of the diameter of the feed opening, so that materials falling through the feed opening on the feed plate firstly act on the side wall of the feed hopper and do not act on the feed opening directly, the phenomenon that a spiral discharging mechanism in a discharge bin below the feed opening is damaged due to too large stress can be avoided, meanwhile, the rotation resistance of the spiral discharging mechanism can be reduced, and energy conservation and noise reduction are realized.

Drawings

Fig. 1 is a schematic structural diagram of a low-grade limestone proportioning bin according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a low grade limestone proportioning bin of an embodiment of the invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is the internal structure of the bin body in the embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 to 4, in an embodiment of the low-grade limestone proportioning bin of the present invention, the low-grade limestone proportioning bin of the embodiment includes a cylindrical bin body 10, a conical discharging hopper 20 is arranged at the bottom end of the bin body 10, a circular discharging opening 21 is arranged at the bottom end of the discharging hopper 20, a discharging bin 30 is installed at the lower side of the discharging opening 21, a spiral discharging mechanism 40 is installed in the discharging bin 30, a discharging opening 31 corresponding to the spiral discharging mechanism 40 is arranged at the bottom of the discharging bin 30, an annular discharging plate 22 located in the middle of the discharging hopper 20 is installed in the discharging hopper 20, and a plurality of discharging holes 23 are arranged on the discharging plate 22; the center of the blanking plate 22 is provided with a central distribution cone 24 protruding upwards, the diameter D1 of the bottom circle of the central distribution cone 24 is more than or equal to two thirds of the diameter D2 of the blanking port 21 and less than or equal to four fifths of the diameter D2 of the blanking port 21; the distance D3 between the top of the central material-dividing cone 24 and the top cover of the cartridge body 10 is more than or equal to one fourth of the height H of the cartridge body 10 and less than or equal to one third of the height H of the cartridge body 10, and the cone angle alpha of the central material-dividing cone 24 is more than or equal to 10 degrees and less than or equal to 25 degrees.

In the low-grade limestone proportioning bin in the embodiment, the annular blanking plate is arranged in the conical blanking hopper, the blanking hole is formed in the blanking plate, and the center of the blanking plate is provided with the central distributing cone protruding upwards, so that part of gravity of materials in the bin body is borne by the blanking plate and the central distributing cone and does not directly act on the blanking port of the blanking hopper; the diameter of the bottom circle of the central material distributing cone is more than or equal to two thirds of the diameter of the feed opening, so that materials falling through the feed opening on the feed plate firstly act on the side wall of the feed hopper but not directly act on the feed opening, the damage of the spiral discharging mechanism in the feed bin below the feed opening due to overlarge stress can be avoided, the rotation resistance of the spiral discharging mechanism can be reduced, the power of a power device of the spiral discharging mechanism is reduced, and energy conservation and noise reduction are realized; the cone angle alpha of the central material distributing cone 24 is more than or equal to 10 degrees and less than or equal to 25 degrees, so that when the material is fed from a middle feeding hole of the top cover of the bin body, material particles can be distributed through the central material distributing cone, and the influence of the central material distributing cone on material feeding and discharging is reduced; the cone wall of the central material-distributing cone is matched with the inner wall of the discharging hopper, so that materials above the discharging plate can reliably fall through the discharging hole in the discharging plate.

In one embodiment of the present application, it is preferable that a cylindrical support plate 25 is provided at a lower side of an outer edge of the lower plate 22, and a lower edge of the support plate 25 is fixedly connected to an inner wall of the lower hopper 20, thereby reliably supporting the lower plate by the support plate; preferably, the upper side of the outer edge of the blanking plate 22 is provided with a connecting plate 26 which extends outwards and is tapered, and the upper edge of the connecting plate 26 is fixedly connected with the inner wall of the blanking hopper 20, so that the materials on the upper side of the blanking plate can be reliably collected towards the middle. Preferably, a plurality of blanking holes 23 are uniformly arranged on the blanking plate 22 centering on the central axis of the bin body 10, so that the material in the bin body falls uniformly.

In one embodiment of the present application, the discharging bin 30 is preferably semicircular in cross section, and the lower edge of the helical blade 41 of the helical discharging mechanism 40 is tangent to the inner wall of the bottom of the discharging bin 30, so that the materials can be collected at the bottom of the discharging bin and discharged through the helical discharging mechanism. Preferably, the screw discharger 40 further comprises a motor 42 and a decelerator fixed to the sidewall of the discharge bin 30.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A low-grade limestone proportioning bin comprises a cylindrical bin body, wherein a conical blanking hopper is arranged at the bottom end of the bin body, and a circular blanking port is arranged at the bottom end of the blanking hopper; the center of the blanking plate is provided with a central material distributing cone protruding upwards, and the diameter of the bottom circle of the central material distributing cone is more than or equal to two thirds of the diameter of the blanking port and less than or equal to four fifths of the diameter of the blanking port; the distance between the top of the central material-distributing cone and the top cover of the bin body is more than or equal to one fourth of the height of the bin body and less than or equal to one third of the height of the bin body, and the cone angle of the central material-distributing cone is more than or equal to 10 degrees and less than or equal to 25 degrees.

2. The low-grade limestone batching bin according to claim 1, characterized in that: and a cylindrical supporting plate is arranged on the lower side of the outer edge of the blanking plate, and the lower edge of the supporting plate is fixedly connected with the inner wall of the blanking hopper.

3. The low-grade limestone batching bin according to claim 2, characterized in that: the upper side of the outer edge of the discharging plate is provided with a connecting plate which extends outwards and is tapered, and the upper edge of the connecting plate is fixedly connected with the inner wall of the discharging hopper.

4. The low-grade limestone batching bin according to claim 1, characterized in that: the cross-section of the discharge bin is semicircular, and the lower edge of a helical blade of the helical discharge mechanism is tangent to the inner wall of the bottom of the discharge bin.

5. The low-grade limestone batching bin according to claim 1, characterized in that: the spiral discharging mechanism further comprises a motor and a speed reducer which are fixed on the side wall of the discharging bin.

6. The low-grade limestone batching bin according to claim 1, characterized in that: the plurality of blanking holes are uniformly arranged on the blanking plate by taking the central axis of the bin body as the center.