Coal sample preparation device

Abstract

The utility model provides a coal sample preparation device. The coal sample preparation device comprises a dispersing assembly arranged at the upstream of a feeding piece, the dispersing and stirring device comprises a first shell and a dispersing and stirring part arranged in the first shell; a coal sample enters the first shell and is stirred and dispersed by the dispersing and stirring part; the anti-blocking crushing assembly is arranged at the downstream of the feeding piece; the hammer head assembly comprises a second shell, a hammer head assembly and a sieve plate piece; the hammerhead assembly comprises a hammerhead arranged in the second shell, and a coal sample in the second shell is crushed through rotation of the hammerhead; and the sieve plate part is arranged below the hammer head and is used for sieving the crushed coal sample. The coal sample preparation device can effectively solve the problems of blockage of the feeding port, blockage of the crushing device, reduction of sample preparation precision, low working efficiency and the like in the coal sample preparation process, so that the sample preparation efficiency is effectively improved, blockage of the crushing device is avoided, the sample preparation accuracy and the test accuracy are improved, and a more accurate settlement basis is provided for coal trade.

Description

Technical Field

[0001] The utility model relates to the technical field of coal sample preparation, in particular to a coal sample preparation device. Background Art

[0002] Coal testing includes sampling, sample preparation and testing, where sample preparation is to crush, mix, reduce and dry the collected coal samples into test coal samples that can represent the characteristics of the original coal samples. The 13mm coal sample preparation device is a crushing device that can crush coal samples to 13mm during the coal sample preparation process. For manually sampled samples, the coal crusher can quickly crush samples with a nominal maximum particle size of 50mm to 13mm for the next step of sample preparation.

[0003] There are many types of coal at present. Some types of coal have high moisture content and strong adhesion. When using traditional coal sample preparation equipment for crushing, due to the large feed flow rate, coal samples are prone to accumulation and blockage at the feeding port of the feeding belt conveyor. When the coal samples enter the crusher and are crushed, they are prone to adhesion to the inner wall of the crusher and the screen plate holes. The coal samples that meet the preparation particle size requirements cannot flow out of the crusher smoothly, resulting in blockage failure, which greatly increases the labor intensity and affects the sample preparation efficiency, and the accuracy of the sample preparation cannot be guaranteed. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to propose a coal sample preparation device, which can effectively solve the problems of feed port blockage and low working efficiency in the coal sample preparation process, thereby effectively improving the sample preparation efficiency.

[0005] To achieve the above-mentioned purpose, the utility model proposes a coal sample preparation device, comprising a dispersion assembly arranged upstream of a feeding member; the device comprises a first shell and a dispersion stirring member arranged in the first shell; the coal sample enters the first shell and is stirred and dispersed by the dispersion stirring member; and

[0006] An anti-blocking crushing assembly is arranged downstream of the feeding member; it includes a second shell, a hammer assembly and a screen plate member; the hammer assembly includes a hammer head arranged in the second shell, and the coal sample in the second shell is crushed by rotating the hammer head; the screen plate member is arranged below the hammer head, and is used to screen the crushed coal sample.

[0007] In some embodiments, the anti-blocking and crushing assembly further includes a scraping assembly; the scraping assembly includes at least one scraping plate disposed on the inner wall of the second shell.

[0008] In some embodiments, there are two scraping plates which are arranged opposite to each other.

[0009] In some embodiments, the dispersing and stirring member includes a first driving member, a dispersing shaft and stirring blades; wherein the first driving member drives the dispersing shaft to rotate; and the stirring blades are multiple and are arranged on the dispersing shaft at intervals.

[0010] In some embodiments, adjacent stirring blades are arranged at the same angle.

[0011] In some embodiments, a projection of any one of the stirring blades on an adjacent one of the stirring blades is arranged at 90° to the adjacent one of the stirring blades.

[0012] In some embodiments, the hammer assembly further includes a third motor, a rotating shaft and a reducer; the third motor is connected to the reducer, and the output shaft of the reducer is connected to the rotating shaft; and the hammer is fixed on the rotating shaft.

[0013] In some embodiments, the sieve plate member includes at least two layers of anti-blocking sieve plates, and each of the anti-blocking sieve plates is provided with sieve holes; at least two layers of the anti-blocking sieve plates are stacked in sequence in the up and down directions so that the adjacent sieve holes in the up and down directions are correspondingly arranged.

[0014] In some embodiments, the mesh holes are bar-shaped holes.

[0015] In some embodiments, it also includes a reduction belt conveyor and a sample discarding belt conveyor; the reduction belt conveyor is arranged downstream of the anti-blocking and crushing component to perform reduction sampling of coal samples, and the sample discarding belt conveyor is arranged downstream of the reduction belt conveyor to transport discarded coal.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of a coal sample preparation device proposed in one embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a dispersed component proposed in one embodiment of the utility model;

[0020] Figure 3 This is a structural schematic diagram of an anti-blocking and crushing assembly proposed in one embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a sieve plate member proposed in one embodiment of the utility model;

[0022] In the figure, 1, elevator; 2, feeding member; 3, reduction belt conveyor; 4, sample discarding belt conveyor; 5, dispersion component; 51, first housing; 52, dispersion motor; 53, dispersion reducer; 541, stirring blade; 542, dispersion shaft;

[0023] 6. Anti-blocking crushing assembly; 61. Second shell; 62. Base; 63. First motor; 64. Second motor; 65. Third motor; 66. Reducer; 67. Rotating shaft; 68. Hammer; 69. First scraping plate; 610. Second scraping plate; 611. Screen plate member; 6111. First screen plate hole; 6112. First anti-blocking screen plate; 6113. Second screen plate hole; 6114. Second anti-blocking screen plate. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0025] To achieve the above purpose, if Figure 1 The utility model shows a coal sample preparation device, comprising a dispersion component 5 arranged upstream of a feeding member 2 and an anti-blocking and crushing component 6 arranged downstream of the feeding member 2; wherein the dispersion component 5 comprises a first shell 51 and a dispersion and stirring member arranged in the first shell 51; the coal sample enters the first shell 51 and is stirred and dispersed by the dispersion and stirring member; the anti-blocking and crushing component 6 comprises a second shell 61, a hammer assembly and a screen plate 611; the hammer assembly comprises a hammer 68 arranged in the second shell 61, and the coal sample in the second shell 61 is crushed by the rotation of the hammer 68; the screen plate 611 is arranged below the hammer 68, and is used to screen the crushed coal sample.

[0026] Among them, the coal sample preparation device in this embodiment includes a dispersion component 5, a feed piece 2 and an anti-blocking crushing component 6 arranged in sequence upstream and downstream. In the related art, the commercial coal directly enters the feed piece 2, and due to the large feed flow rate, the coal sample is easily accumulated and blocked at the feed inlet of the feed piece 2, resulting in low coal sample preparation efficiency. In this embodiment, a dispersion component 5 is arranged at the feed inlet of the feed piece 2, and the coal sample is stirred and dispersed by the dispersion component 5 before entering the feed piece 2, so as to prevent the coal sample from accumulating and blocking at the feed inlet of the feed piece 2.

[0027] In this embodiment, the dispersion assembly 5 includes a first shell 51 and a dispersion stirring member; wherein the dispersion stirring member is arranged in the first shell 51, and the coal sample enters the first shell 51, and is stirred and dispersed by the dispersion stirring member. The dispersion stirring member includes a first driving member, a dispersion shaft 542 and a stirring blade 541; wherein the first driving member drives the dispersion shaft 542 to rotate; the stirring blade 541 is multiple and is arranged on the dispersion shaft 542 at intervals. For example, the feeding member 2 is a feeding belt conveyor; the first driving member includes a dispersion motor 52 and a dispersion reducer 53, such as Figure 2 As shown, the dispersion component 5 is fixedly connected to the inlet end of the feeding belt conveyor, and the coal sample lifted by the elevator 1 can enter the feeding belt conveyor through the dispersion component 5. The output shaft of the dispersion motor 52 is fixedly connected to the input shaft of the dispersion reducer 53, the dispersion reducer 53 is fixedly connected to the first shell 51, and the output shaft of the dispersion reducer 53 passes through the first shell 51 and is fixedly connected to the dispersion shaft 542. The dispersion shaft 542 is provided with a plurality of stirring blades 541, and two adjacent stirring blades 541 are arranged at the same angle, for example, the projection of any stirring blade on the adjacent stirring blade is arranged at 90° to the adjacent stirring blade.

[0028] Meanwhile, the anti-blocking crushing assembly 6 in this embodiment includes a second shell 61, a hammer assembly and a screen plate 611; the hammer assembly includes a hammer 68 disposed in the second shell 61, and the coal sample in the second shell 61 is crushed by the rotation of the hammer 68; the screen plate 611 is disposed below the hammer 68, and is used to screen the crushed coal sample. That is, the feeder 2 conveys the coal sample to the entrance of the second shell 61, and the coal sample is crushed under the action of the rotation of the hammer 68 after entering the second shell 61. After the crushed coal sample reaches a certain particle size, it can pass through the screen plate 611 and flow out of the second shell 61. The coal sample that does not reach the crushed particle size continues to be crushed under the action of the rotation of the hammer 68 until it reaches a certain particle size and passes through the screen plate 611 and flows out of the second shell 61.

[0029] Therefore, in this embodiment, the coal sample is lifted by the elevator 1 and poured into the first shell 51, and the stirring blade 541 rotates counterclockwise under the drive of the first motor 63. The upper end of the stirring blade 541 will stir and disperse the coal sample, and the lower end thereof will simultaneously push the fallen coal sample forward along the running direction of the feeding piece 2, thereby playing the role of stirring and dispersing the incoming material and bonding the coal sample. Compared with the related technology, it prevents the coal sample from accumulating and clogging at the feeding port of the feeding piece 2, thereby speeding up the efficiency of coal sample preparation.

[0030] In some embodiments, the hammer assembly further includes a third motor 65 , a rotating shaft 67 and a reducer 66 ; the third motor 65 is connected to the reducer 66 , and the output shaft of the reducer 66 is connected to the rotating shaft 67 ; and the hammer 68 is fixed on the rotating shaft 67 .

[0031] The hammer assembly further includes a third motor 65, a rotating shaft 67 and a reducer 66, that is, in this embodiment, the hammer assembly includes a hammer 68, a third motor 65, a rotating shaft 67 and a reducer 66. The rotating shaft of the third motor 65 is fixedly connected to the reducer 66, and the reducer 66 is fixedly connected to the second housing 61. The output shaft of the reducer 66 passes through the second housing 61 and is fixedly connected to the rotating shaft 67. The hammer 68 is arranged on the rotating shaft 67. When the third motor 65 rotates, the reducer 66 can be driven to rotate, thereby driving the hammer 68 to rotate to realize the crushing function, such as Figure 3 shown.

[0032] In some embodiments, the anti-blocking and crushing assembly 6 also includes a scraping assembly; the scraping assembly includes at least one scraping plate arranged on the inner wall of the second shell 61.

[0033] The anti-blocking and crushing assembly 6 also includes a scraping assembly, which includes at least one scraping plate, which is arranged on the inner wall of the second housing 61, and the scraping assembly includes a motor for driving the scraping plate. When there are two or more scraping plates, the motor and the scraping plates are arranged one by one. For example, if there are two scraping plates and they are arranged opposite to each other, Figure 4 The second shell 61 shown is arranged on the base 62, the first motor 63 is fixed on the second shell 61, and the rotating shaft of the first motor 63 passes through the shell and is connected to the first scraping plate 69. When the first motor 63 rotates, it can drive the first scraping plate 69 to rotate, and can scrape the coal sample remaining on the inner cavity wall of the second shell 61. The second motor 64 is fixed on the second shell 61, and the rotating shaft of the second motor 64 passes through the shell and is connected to the second scraping plate 610. The second scraping plate 610 is arranged opposite to the first scraping plate 69. When the second motor 64 rotates, it can drive the second scraping plate 610 to rotate, and can scrape the coal sample remaining on the inner cavity wall of the second shell 61.

[0034] In some embodiments, the sieve plate member 611 includes at least two layers of anti-blocking sieve plates, and each anti-blocking sieve plate is provided with sieve holes; at least two layers of anti-blocking sieve plates are stacked in sequence in the up and down directions so that adjacent sieve holes in the up and down directions are arranged correspondingly, and the sieve holes of the top anti-blocking sieve plate have the smallest aperture.

[0035] The sieve plate member 611 includes at least two layers of anti-blocking sieve plates, for example Figure 4The sieve plate member 611 shown includes a first anti-blocking sieve plate 6112 and a second anti-blocking sieve plate 6114, which are stacked in sequence in the up-down direction and fixedly connected. The first anti-blocking sieve plate 6112 is provided with a plurality of rows of first sieve plate holes 6111, and the second anti-blocking sieve plate 6114 is provided with a plurality of rows of second sieve plate holes 6113 having the same number as the first sieve plate holes 6111, and the sieve holes adjacent to each other in the up-down direction are arranged correspondingly, that is, the first sieve plate holes 6111 and the second sieve plate holes 6113 are adjacent to each other in the up-down direction, the centers of the first sieve plate holes 6111 and the second sieve plate holes 6113 coincide, and the opening size of the first sieve plate holes 6111 is smaller than the opening size of the second sieve plate holes 6113. In some schemes, the first sieve plate holes 6111 and the second sieve plate holes 6113 are strip holes.

[0036] In this embodiment, the provision of the first anti-blocking sieve plate 6112 and the second anti-blocking sieve plate 6114 can effectively enhance the strength of the sieve plate, and the opening size of the first sieve plate hole 6111 is smaller than the opening size of the second sieve plate hole 6113, so that after the coal sample reaches the crushing particle size, it can directly flow out through the first sieve plate hole 6111 without being blocked, which shortens the distance that the coal sample passes through the sieve plate compared with the prior art, and the adhesion between the coal sample and the sieve hole is reduced, which can effectively reduce the blockage and prevent the long-term adhesion of the coal sample from causing blockage; at the same time, the present invention provides a second anti-blocking sieve plate 6114, and the opening size of the first sieve plate hole 6111 is smaller than the opening size of the second sieve plate hole 6113, which further reduces the contact with the coal sample, can effectively reduce the distance that the coal sample passes through the sieve plate, and ensures the strength of the coal sample when passing through the sieve.

[0037] In some embodiments, it also includes a reduction belt conveyor 3 and a sample discarding belt conveyor 4; the reduction belt conveyor 3 is arranged downstream of the anti-blocking crushing component 6 to perform reduction sampling of coal samples, and the sample discarding belt conveyor 4 is arranged downstream of the reduction belt conveyor 3 to transport the discarded coal.

[0038] The coal sample preparation device further includes a reduction belt conveyor 3 and a discarded sample conveyor 4, that is, the coal sample preparation device in this embodiment includes an elevator 1, a dispersion component 5, a feeder 2, an anti-blocking crushing component 6, a reduction belt conveyor 3 and a discarded sample conveyor 4 arranged in sequence upstream and downstream, wherein the elevator 1, the dispersion component 5, the feeder 2, and the anti-blocking crushing component 6 are not described in detail. In this embodiment, the coal sample crushed by the anti-blocking crushing component 6 falls to the reduction belt conveyor 3 for reduction sampling, and the discarded coal output by the reduction belt conveyor 3 is transported to the discarded coal storage area through the discarded sample conveyor 4.

[0039] Therefore, the coal sample preparation device provided in the present application can effectively solve the problems existing in the coal sample preparation process, such as blockage of the feed port, blockage of the crushing device, reduced sample preparation accuracy, low work efficiency, etc., thereby effectively improving the sample preparation efficiency, avoiding blockage of the crushing device, improving the sample preparation accuracy and test accuracy, and providing a more accurate settlement basis for coal trade.

[0040] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0041] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coal sample preparation device, characterized in that: include A dispersion assembly is arranged upstream of the feeding member; it comprises a first shell and a dispersion stirring member arranged in the first shell; the coal sample enters the first shell and is stirred and dispersed by the dispersion stirring member; and An anti-blocking crushing assembly is arranged downstream of the feeding member; it comprises a second shell, a hammer assembly and a screen plate member; the hammer assembly comprises a hammer arranged in the second shell, and the coal sample in the second shell is crushed by the rotation of the hammer; The sieve plate is arranged below the hammer head and is used for screening the crushed coal sample.

2. The coal sample preparation device according to claim 1, characterized in that: The anti-blocking and crushing assembly also includes a scraping and sweeping assembly; the scraping and sweeping assembly includes at least one scraping and sweeping plate arranged on the inner wall of the second shell.

3. The coal sample preparation device according to claim 2, characterized in that: There are two scraping and sweeping plates which are arranged opposite to each other.

4. The coal sample preparation device according to any one of claims 1 to 3, characterized in that: The dispersing and stirring member comprises a first driving member, a dispersing rotating shaft and stirring blades; wherein the first driving member drives the dispersing rotating shaft to rotate; and the stirring blades are multiple and are arranged on the dispersing rotating shaft at intervals.

5. The coal sample preparation device according to claim 4, characterized in that: The adjacent stirring blades are arranged at the same angle.

6. The coal sample preparation device according to claim 4, characterized in that: The projection of any one of the stirring blades on the adjacent stirring blade is arranged at 90° to the adjacent stirring blade.

7. The coal sample preparation device according to claim 4, characterized in that: The hammer assembly also includes a third motor, a rotating shaft and a reducer; the third motor is connected to the reducer, and the output shaft of the reducer is connected to the rotating shaft; the hammer is fixed on the rotating shaft.

8. The coal sample preparation device according to claim 4, characterized in that: The sieve plate member includes at least two layers of anti-blocking sieve plates, and each of the anti-blocking sieve plates is provided with sieve holes; the at least two layers of the anti-blocking sieve plates are stacked in sequence in the up and down directions so that the adjacent sieve holes in the up and down directions are correspondingly arranged.

9. The coal sample preparation device according to claim 8, characterized in that: The sieve holes are strip-shaped holes.

10. The coal sample preparation device according to claim 4, characterized in that: It also includes a reduction belt conveyor and a sample discarding belt conveyor; the reduction belt conveyor is arranged downstream of the anti-blocking and crushing component to perform reduction sampling of coal samples, and the sample discarding belt conveyor is arranged downstream of the reduction belt conveyor to transport discarded coal.

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