Staged feeding device capable of preventing coal dust from bonding

Abstract

The utility model relates to a staged feeding device capable of preventing coal dust from bonding. The device comprises a material frame, a lump coal hopper, a pulverized coal hopper, a first sieve plate and an adjusting mechanism, the bottom of the material frame is fixedly connected with the lump coal hopper used for collecting lump coal and the pulverized coal hopper used for collecting pulverized coal, the first sieve plate corresponding to the pulverized coal hopper is obliquely installed in the material frame, first sieve holes are formed in the first sieve plate and are in a long strip shape, and the adjusting mechanism is arranged on the first sieve plate. Lump coal can roll to the lump coal hopper along the first sieve plate, and pulverized coal penetrates through the first sieve holes to fall into the pulverized coal hopper; an adjusting mechanism is further installed in the material frame, and the screening size of the first screening plate can be adjusted through the adjusting mechanism. According to the scheme provided by the invention, the pulverized coal or the pea coal can be screened out before the coal mine enters the silo and treated independently, so that the situation that a large amount of the pulverized coal or the pea coal is bonded in the silo is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of coal mine conveying equipment, and particularly relates to a grading feeding device for preventing coal dust adhesion. Background Art

[0002] During the coal mine mining process, coal with a particle size greater than 13 mm is generally referred to as lump coal (including small lump coal, medium lump coal, large lump coal, and extra-large lump coal), coal with a particle size between 6 - 13 mm is generally referred to as granular coal, and coal with a particle size less than 6 mm is called pulverized coal. Due to the microporous structure of the coal mine itself, it is easy to absorb moisture during the mining, transportation, and storage processes, resulting in a relatively high moisture content of the coal mine. In a cold environment, when the coal mine is transported to the silo for storage, a large amount of pulverized coal is likely to adhere to the inner wall of the silo due to freezing adhesion, and long-term accumulation is likely to cause silo blockage. Among them, the principle of the freezing adhesion phenomenon is: due to the cold inner wall of the silo (usually below zero degrees), when the pulverized coal contacts the inner wall of the silo, the moisture in the pulverized coal will be quickly frozen under the action of low temperature, resulting in the pulverized coal adhering to the inner wall of the silo, and the lower the temperature, the more serious the freezing adhesion phenomenon.

[0003] And due to the large self-weight of the lump coal, the freezing adhesion phenomenon usually does not occur. Although the granular coal also has a certain weight, due to its relatively light weight, as the temperature decreases, the freezing adhesion phenomenon will become more serious, resulting in a large amount of granular coal also adhering to the inner wall of the silo. Since the volume of the silo is large, the cleaning not only has a large workload, but also requires the transfer of the coal stored inside, which is very troublesome. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, the present application provides a grading feeding device for preventing coal dust adhesion, which can screen out pulverized coal or granular coal before the coal mine enters the silo and process them separately, thereby avoiding a large amount of pulverized coal or granular coal adhering to the silo.

[0005] The present application provides a grading feeding device for preventing coal dust adhesion, including a material frame, a lump coal hopper, a pulverized coal hopper, a first sieve plate, and an adjusting mechanism. The bottom of the material frame is fixedly connected with a lump coal hopper for collecting lump coal and a pulverized coal hopper for collecting pulverized coal respectively. A first sieve plate corresponding to the pulverized coal hopper is inclinedly installed in the material frame. The first sieve plate is provided with first sieve holes, and the first sieve holes are strip-shaped, so that the lump coal can roll down along the first sieve plate into the lump coal hopper, while the pulverized coal passes through the first sieve plate and falls into the pulverized coal hopper; an adjusting mechanism is also installed in the material frame, and the screening size of the first sieve plate can be adjusted through the adjusting mechanism.

[0006] Optionally, in some embodiments, an inclined installation groove is provided on the side wall of the material frame, and the end of the installation groove close to the belt conveyor is high, and the end far from the belt conveyor is low. A sliding groove flush with the installation groove is also provided at the bottom of the first sieve plate.

[0007] Optionally, in some embodiments, the adjusting mechanism includes a second sieve plate, a bracket, and an electric telescopic rod. The second sieve plate passes through the installation groove and is slidably connected in the chute. The second sieve plate is provided with second sieve holes, and the shape and size of the second sieve holes are the same as those of the first sieve holes. A bracket is fixedly installed on the side of the second sieve plate. One end of the electric telescopic rod is fixedly connected to the bracket, and the other end is fixedly installed on the material frame. The second sieve plate can be driven to slide by the electric telescopic rod, so as to block the first sieve holes and change the screening size of the first sieve plate.

[0008] Optionally, in some embodiments, the pulverized coal hopper includes a hopper body, a pulverized coal pipe, a heating wire, and a heat preservation sleeve. The hopper body is in a funnel shape, and the top of the hopper body is fixedly connected to the bottom of the material frame. A pulverized coal pipe is arranged at the bottom of the hopper body, and a heating wire is wound around the outside of the pulverized coal pipe, and the outside of the pulverized coal pipe is wrapped by a heat preservation sleeve.

[0009] Optionally, in some embodiments, a vibration motor is fixedly installed on the hopper body.

[0010] Optionally, in some embodiments, a scraper corresponding to the belt conveyor is fixedly connected to the material frame.

[0011] Optionally, in some embodiments, a baffle is arranged on the material frame.

[0012] The technical solution provided by this application may include the following beneficial effects:

[0013] This application can classify coal mines through the first sieve plate to screen out pulverized coal. Moreover, the granular coal can be screened according to requirements through the adjusting mechanism, and the lump coal directly enters the silo without being affected, thereby preventing a large amount of pulverized coal or granular coal from adhering to the inner wall of the silo and avoiding blockage of the silo; the temperature of the pulverized coal pipe is ensured by the heating wire and the heat preservation sleeve, and the phenomenon of freezing and sticking in the pulverized coal pipe is avoided.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By describing the exemplary embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. Among them, in the exemplary embodiments of the present application, the same reference numerals generally represent the same components.

[0016] Figure 1 is the overall structural schematic diagram of this application;

[0017] Figure 2 is the overall structural schematic diagram of another perspective of this application;

[0018] Figure 3 It is a schematic diagram of a partial structure of the present application;

[0019] Figure 4 It is a schematic diagram of the screening mechanism of the present application;

[0020] Figure 5 It is a schematic diagram of the screening mechanism of the present application.

[0021] Reference numerals:

[0022] 1 - material frame, 11 - scraper, 12 - baffle, 13 - mounting groove, 2 - lump coal hopper, 3 - pulverized coal hopper, 31 - hopper body, 32 - pulverized coal pipe, 33 - heating wire, 34 - heat preservation sleeve, 4 - first sieve plate, 41 - first sieve hole, 42 - chute, 5 - adjusting mechanism, 51 - second sieve plate, 52 - support, 53 - connecting projection, 54 - electric telescopic rod, 55 - second sieve hole, 6 - vibration motor, 7 - belt conveyor. Detailed implementation manners

[0023] The embodiments of the present application will be described in more detail below with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0024] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0026] Unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] See Figure 1 、 2 , a grading feeding device for preventing coal dust adhesion, including a material frame 1, a lump coal hopper 2, a pulverized coal hopper 3, a first sieve plate 4, and an adjusting mechanism 5. When storing coal mines, it is necessary to convey the coal mines to the top of the silo through a belt conveyor 7. The coal mines fall from the top of the silo into the silo. The material frame 1 is fixedly installed on the factory floor at the top of the silo. At the bottom of the material frame 1, a lump coal hopper 2 for collecting lump coal and a pulverized coal hopper 3 for collecting pulverized coal are fixedly connected respectively. And a first sieve plate 4 corresponding to the pulverized coal hopper 3 is inclinedly installed in the material frame 1. A first sieve hole 41 is uniformly opened on the first sieve plate 4. The first sieve hole 41 is in a long strip shape, so that the lump coal can roll down along the first sieve plate 4 into the lump coal hopper 2 and then enter the silo for storage, while the pulverized coal passes through the first sieve plate 4 and falls into the pulverized coal hopper 3 for separate collection and treatment; An adjusting mechanism 5 is also installed in the material frame 1. The screening size of the first sieve plate 4 can be adjusted through the adjusting mechanism 5, so as to screen out granular coal according to requirements.

[0028] See Figure 4 、 5 , an inclined installation groove 13 is opened on the side wall of the material frame 1, and the end of the installation groove 13 close to the belt conveyor 7 is high, and the end far from the belt conveyor 7 is low. A chute 42 flush with the installation groove 13 is also provided at the bottom of the first sieve plate 4.

[0029] An adjusting mechanism 5 is installed at the installation groove 13, including a second sieve plate 51, a bracket 52, and an electric telescopic rod 54. The second sieve plate 51 passes through the installation groove 13 and is slidably connected in the chute 42. And a second sieve hole 55 is opened on the second sieve plate 51. The shape and size of the second sieve hole 55 are the same as those of the first sieve hole 41. A bracket 52 is fixedly installed on the side of the second sieve plate 51. A connecting protrusion 53 is provided on the bracket 52. One end of the electric telescopic rod 54 is fixedly connected to the connecting protrusion 53, and the other end is fixedly installed on the material frame 1. Further, the width of both the first sieve hole 41 and the second sieve hole 55 is 13 mm, and the interval between adjacent first sieve holes 41 or second sieve holes 55 is also 13 mm. The electric telescopic rod 54 can drive the second sieve plate 51 to slide, so as to block the first sieve hole 41 and change the screening size of the first sieve plate 4.

[0030] Under normal conditions, the first sieve plate 4 and the second sieve plate 51 overlap. At this time, the first sieve hole 41 and the second sieve hole 55 are aligned, and the pulverized coal and granular coal can be screened. The pulverized coal and granular coal pass through the first sieve plate 4 and enter the pulverized coal hopper 3, and the lump coal rolls along the first sieve plate 4 to the lump coal hopper 2; when the screening size needs to be adjusted, the second sieve plate 51 is driven to slide by controlling the extension of the electric telescopic rod 54, so that the first sieve hole 41 and the second sieve hole 55 are misaligned. At this time, the width of the overlapping part of the first sieve hole 41 and the second sieve hole 55 is the screening size; when the first sieve hole 41 and the second sieve hole 55 are completely misaligned, the first sieve plate 4 no longer has the screening function, and at this time, all the coal will enter the lump coal hopper 2.

[0031] See also Figure 3 The pulverized coal hopper 3 includes a hopper body 31, a pulverized coal pipe 32, a heating wire 33, and an insulation sleeve 34. The hopper body 31 is funnel-shaped, and the top of the hopper body 31 is fixedly connected to the bottom of the material frame 1. The bottom of the hopper body 31 is provided with a pulverized coal pipe 32, and the outside of the pulverized coal pipe 32 is wrapped with a heating wire 33, and the outside of the pulverized coal pipe 32 is wrapped with an insulation sleeve 34. Furthermore, the hopper body 31 and the pulverized coal pipe 32 are both made of a relatively smooth alloy material. The smooth surface can reduce the adhesion of pulverized coal or granular coal. When the ambient temperature is low, the pulverized coal pipe 32 is heated by the heating wire 33, thereby preventing the pulverized coal or granular coal from freezing and sticking when passing through the pulverized coal pipe 32, thereby ensuring the smooth flow of the pulverized coal pipe 32. Furthermore, a vibration motor 6 is fixedly installed on the outer wall of the hopper body 31. By starting the vibration motor 6, the material in the hopper body 31 can slide more easily into the pulverized coal pipe 32.

[0032] On the basis of the above embodiment, a scraper 11 corresponding to the belt conveyor 7 is fixedly connected to the material frame 1. The scraper 11 is used to scrape off part of the coal ore adhering to the conveyor belt and make it fall into the material frame 1; a baffle 12 is provided on the material frame 1, and the baffle 12 ensures that the coal ore falls normally from the belt conveyor 7 into the material frame 1.

[0033] Specific working process:

[0034] The extension of the electric telescopic rod 54 is controlled according to demand to drive the second screen plate 51 to slide and block the first screen hole 41, thereby changing the screening size of the first screen plate 4; when the coal falls from the belt conveyor 7 into the material frame 1, the coal larger than the screening particle size rolls along the first screen plate 4 to the lump coal hopper 2 under the action of gravity and enters the silo for storage, while the coal smaller than the screening particle size passes through the first sieve plate 4 and the second sieve plate 51 and enters the pulverized coal hopper 3 for separate collection and processing, thereby realizing graded storage of coal, avoiding a large amount of coal sticking to the silo, and ensuring the normal use of the silo.

[0035] Finally, it should also be noted that in this text, relationships such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms including, containing or any other variant are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A classified feeding device for preventing coal dust adhesion, characterized in that: It includes a material frame (1), a lump coal hopper (2), a pulverized coal hopper (3), a first sieve plate (4), and an adjusting mechanism (5). The bottom of the material frame (1) is fixedly connected with a lump coal hopper (2) for collecting lump coal and a pulverized coal hopper (3) for collecting pulverized coal. A first sieve plate (4) corresponding to the pulverized coal hopper (3) is inclinedly installed in the material frame (1). First sieve holes (41) are formed in the first sieve plate (4), and the first sieve holes (41) are strip-shaped, so that the lump coal can roll down along the first sieve plate (4) into the lump coal hopper (2), while the pulverized coal passes through the first sieve plate (4) and falls into the pulverized coal hopper (3). An adjusting mechanism (5) is also installed in the material frame (1), and the screening size of the first sieve plate (4) can be adjusted through the adjusting mechanism (5).

2. The classified feeding device for preventing coal dust adhesion according to claim 1, characterized in that: An inclined installation groove (13) is formed in the side wall of the material frame (1), and the end of the installation groove (13) close to the belt conveyor (7) is high, and the end far from the belt conveyor (7) is low. A sliding groove (42) flush with the installation groove (13) is also provided at the bottom of the first sieve plate (4).

3. The hierarchical feeding device for preventing coal dust adhesion according to claim 2, characterized in that: The adjusting mechanism (5) includes a second sieve plate (51), a bracket (52), and an electric telescopic rod (54). The second sieve plate (51) passes through the installation groove (13) and is slidably connected in the sliding groove (42). Second sieve holes (55) are formed in the second sieve plate (51), and the shape and size of the second sieve holes (55) are the same as those of the first sieve holes (41). A bracket (52) is fixedly installed on the side of the second sieve plate (51). One end of the electric telescopic rod (54) is fixedly connected with the bracket (52), and the other end is fixedly installed on the material frame (1). The second sieve plate (51) can be driven to slide through the electric telescopic rod (54) to block the first sieve holes (41), thereby changing the screening size of the first sieve plate (4).

4. The hierarchical feeding device for preventing coal dust adhesion according to claim 1, characterized in that: The pulverized coal hopper (3) includes a hopper body (31), a pulverized coal pipe (32), a heating wire (33), and a heat preservation sleeve (34). The hopper body (31) is funnel-shaped, and the top of the hopper body (31) is fixedly connected to the bottom of the material frame (1). A pulverized coal pipe (32) is provided at the bottom of the hopper body (31). A heating wire (33) is wound around the outside of the pulverized coal pipe (32), and the outside of the pulverized coal pipe (32) is wrapped by a heat preservation sleeve (34).

5. The graded feeding device for preventing coal dust adhesion according to claim 4, wherein: A vibration motor (6) is fixedly installed on the hopper body (31).

6. The classified feeding device for preventing coal dust adhesion according to claim 1, characterized in that: A scraper (11) corresponding to the belt conveyor (7) is fixedly connected to the material frame (1).

7. The classified feeding device for preventing coal dust adhesion according to claim 1, characterized in that: A baffle (12) is provided on the material frame (1).

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