Pre-screening coal sample preparation device with moisture detection and mixing functions

Abstract

The utility model relates to the technical field of coal sample preparation devices, and provides a pre-screening coal sample preparation device with moisture detection and mixing functions, which comprises a conveying part arranged on a support frame and used for conveying a coal sample; the screen is arranged on the support frame and is obliquely arranged; the guide plate is arranged on the conveying piece, located below the screen and used for guiding powder screened out by the screen; the crusher is arranged on the supporting frame and used for crushing large coal samples left on the screen. By means of the technical scheme, the problems that in the prior art, due to the fact that the coal sample is actually excessively crushed, the coal sample is large in moisture loss and large in dust amount are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal sample preparation devices, and specifically, to a pre-screening coal sample preparation device with moisture detection and mixing functions. Background Technique

[0002] Coal sample preparation refers to the process of preparing a coal sample that can represent the characteristics and composition of raw coal through a series of standardized processing steps, including crushing, mixing, and reduction procedures, from the coal sample obtained from the sampling unit. The purpose of this process is to obtain a sufficiently small and uniform coal sample for subsequent coal quality analysis, such as the determination of calorific value, total sulfur, moisture, ash content, volatile matter, and other indicators. Currently, all coal samples are crushed by a crusher. In fact, most of the sample particle sizes in the coal samples entering the crusher are smaller than the target crushing particle size, and this part of the coal samples is actually over-crushed, resulting in problems such as easy blockage of the crushing equipment, large loss of coal sample moisture, and large amount of dust. Content of the Utility Model

[0003] The utility model provides a pre-screening coal sample preparation device with moisture detection and mixing functions, which solves the problems of over-crushing of coal samples in the related art, resulting in large loss of coal sample moisture and large amount of dust.

[0004] A pre-screening coal sample preparation device with moisture detection and mixing functions includes:

[0005] A support frame;

[0006] A conveying member, arranged on the support frame, and the conveying member is used for conveying coal samples;

[0007] A sieve mesh, arranged on the support frame, and the sieve mesh is inclined;

[0008] A guiding plate, arranged on the conveying member, the guiding plate is located below the sieve mesh, and the guiding plate is used for guiding the powder sieved out by the sieve mesh;

[0009] A crusher, arranged on the support frame, and the crusher is used for crushing the large coal samples remaining on the sieve mesh.

[0010] As a further technical solution, the conveying member includes:

[0011] A conveying frame, arranged on the support frame;

[0012] Rotating rollers, having several, rotatably arranged on the conveying frame, and several of the rotating rollers are arranged at intervals in an array;

[0013] A conveyor belt, arranged on the rotating rollers.

[0014] As a further technical solution, it further includes:

[0015] A moisture detection device is arranged on the support frame in a liftable manner. After the moisture detection device is lifted, it enters or exits the coal sample.

[0016] A first telescopic member is arranged on the support frame. The first telescopic member has a first telescopic end, and the moisture detection device is arranged on the first telescopic end. The first telescopic member is used to drive the moisture detection device to lift.

[0017] As a further technical solution, it further includes:

[0018] A second telescopic member is arranged on the support frame. The second telescopic member has a second telescopic end;

[0019] A push plate is arranged on the second telescopic end. The second telescopic member is used to push the coal sample away from the conveying member.

[0020] As a further technical solution, the moisture detection device can control the action of the second telescopic member.

[0021] As a further technical solution, it further includes:

[0022] A mixing member is arranged on the support frame. The mixing member is used to mix the crushed coal sample evenly.

[0023] As a further technical solution, the mixing member is located below the guiding plate and the bottom of the crusher.

[0024] As a further technical solution, the mixing member is a vibrating riffle splitter.

[0025] The technical solution of the present utility model is as follows:

[0026] The working principle and beneficial effects of the present utility model are as follows:

[0027] In the present utility model, the support frame is used to support the whole equipment, ensuring the smooth transportation of the conveying member. The conveying member is used to convey the coal sample. Usually, the coal sample is contained in a coal bucket, and the sieve mesh is located at the end of the conveying member. When the coal bucket is conveyed to the end of the conveying member through the conveying member, the operator will put the coal sample in the coal bucket onto the sieve mesh for screening, ensuring that the fine particles in the coal sample are screened by the sieve mesh, while the large coal sample will pass through the sieve mesh and enter the crusher for crushing, so that the particle size of the coal sample entering the crusher is relatively large, preventing over-crushing, ensuring that the moisture content in the coal sample will not change due to the increase in processing steps, improving the accuracy of the coal sample data. The fine particles will not enter the crusher after screening, and the generation of dust is also reduced, improving the cleanliness of the on-site environment. The guiding plate is located below the sieve mesh to guide the powder screened by the sieve mesh, further reducing the generation of dust on the premise of effective collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present utility model in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0029] Figure 1 is a schematic structural diagram of the present utility model;

[0030] Figure 2 is a schematic structural diagram of the present utility model from another perspective;

[0031] Figure 3 is a schematic structural diagram of the present utility model from the third perspective;

[0032] Figure 4 of the present utility model Figure 3 is a partial enlarged view of part A in the present utility model.

[0033] In the figure: 1, support frame; 2, conveying member; 3, sieve mesh; 4, guiding plate; 6, crusher; 8, conveying rack; 9, rotating roller; 10, conveyor belt; 11, moisture detection device; 12, first telescopic member; 13, first telescopic end; 14, second telescopic member; 15, second telescopic end; 16, pushing plate; 17, mixing member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the specific embodiments of the present utility model with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, they can also be understood as further technical solutions. In some of the figures, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0035] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0037] Referring to Figures 1 to 4 , which is the first embodiment of the present utility model, a pre-screening coal sample preparation device with moisture detection and mixing functions is proposed, including: a conveyor member 2 is arranged on a support frame 1, and the conveyor member 2 is used for conveying coal samples; a sieve mesh 3 is arranged on the support frame 1, and the sieve mesh 3 is inclined; a guiding plate 4 is arranged on the conveyor member 2, the guiding plate 4 is located below the sieve mesh 3, and the guiding plate 4 is used for guiding the powder sieved by the sieve mesh 3; a crusher 6 is arranged on the support frame 1, and the crusher 6 is used for crushing the large coal samples left on the sieve mesh 3.

[0038] In this embodiment, the support frame 1 is used to support the whole device, ensuring that the conveying of the conveyor member 2 can be carried out smoothly, and the conveyor member 2 is used for conveying coal samples. Usually, the coal samples are contained in a coal bucket. The sieve mesh 3 is located at the end of the conveyor member 2. When the coal bucket is conveyed to the end of the conveyor member 2 through the conveyor member 2, the operator will put the coal samples in the coal bucket on the sieve mesh 3 for screening, ensuring that the fine particles in the coal samples are sieved by the sieve mesh 3, while the large coal samples will pass through the sieve mesh 3 and enter the crusher 6 for crushing, so that the particle size of the coal samples entering the crusher 6 is relatively large, preventing the situation of over-crushing, ensuring that the moisture content in the coal samples will not change due to the increase of processing steps, improving the accuracy of the coal sample data. The fine particles will not enter the crusher 6 after screening, and the generation of dust is also reduced, improving the cleanliness of the on-site environment. The guiding plate 4 is located below the sieve mesh 3 to guide the powder sieved by the sieve mesh 3, ensuring that the coal powder can be effectively collected and further reducing the generation of dust.

[0039] As a further technical solution, the conveyor member 2 includes: a conveyor frame 8 is arranged on the support frame 1; there are several rotating rollers 9, which are rotatably arranged on the conveyor frame 8, and several rotating rollers 9 are arranged at intervals in an array; a conveyor belt 10 is arranged on the rotating rollers 9.

[0040] In this embodiment, the conveyor frame 8 is arranged on the support frame 1 and is arranged along the support frame 1. The coal bucket containing the coal samples is conveyed through several rotating rollers 9 on the conveyor frame 8, which can ensure more stable conveying, and the conveyor belt 10 can also carry and drive stably, improving the smoothness of conveying.

[0041] As a further technical solution, it further includes: a moisture detection device 11 is arranged on the support frame 1 in a lifting manner. After the moisture detection device 11 is lifted, it enters or leaves the coal samples; a first telescopic member 12 is arranged on the support frame 1, and the first telescopic member 12 has a first telescopic end 13, and the moisture detection device 11 is arranged on the first telescopic end 13, and the first telescopic member 12 is used for driving the moisture detection device 11 to lift.

[0042] In this embodiment, when the coal bucket is being conveyed, the moisture detection device 11 can detect the moisture in the coal sample. If the moisture content in the coal sample is high, not only will fine particles and powders adhere to each other, affecting the screening effect, but also the coal sample with a high moisture content cannot be well crushed by the crusher 6. Therefore, before crushing, it is necessary to detect the moisture in the coal sample through the moisture detection device 11, and then sort the coal sample after the detection is completed. Only the coal samples with qualified moisture can be subjected to subsequent screening and mixing. If the moisture content is too high, it needs to be processed in advance before crushing, which ensures the quality and efficiency of sample preparation and also prevents the wet coal samples from blocking the sieve 3 and the crusher 6. Before crushing, the moisture content of the coal sample is first detected. If the moisture is low, it can all be directly crushed; if the moisture is high, screening is adopted. The oversize (coarse particles) enters the crusher for crushing. The oversize after crushing and the previous undersize (fine particles) are repeatedly mixed by a riffle, and finally a coal sample with a particle size meeting the requirements is obtained to complete the crushing operation.

[0043] As a further technical solution, it further includes: a second telescopic member 14 is arranged on the support frame 1, and the second telescopic member 14 has a second telescopic end 15; a push plate 16 is arranged on the second telescopic end 15, and the second telescopic member 14 is used to push the coal sample away from the conveying member 2.

[0044] In this embodiment, the second telescopic member 14 is a cylinder, and it can also be an oil cylinder or other components that can perform actions. The action direction of the second telescopic member 14 is different from the conveying direction. When the second telescopic member 14 performs an action, it can push the coal bucket away from the conveying member 2, and the push plate 16 is in direct contact with the coal bucket, ensuring that the action of the second telescopic member 14 can be completely transmitted to the coal bucket, improving the smoothness of coal bucket conveying.

[0045] As a further technical solution, the moisture detection device 11 can control the action of the second telescopic member 14.

[0046] In this embodiment, after the moisture detection device 11 detects the coal sample in the coal bucket, if the moisture is higher than the preset value, the moisture detection will send a signal to the second telescopic member 14 to make it act to send the coal bucket away from the conveying member 2. If the moisture is not higher than the set value, the second telescopic member 14 will not act, and the coal bucket will continue to be conveyed by the conveying member 2 to the end of the conveying member 2. By controlling the second telescopic member 14 through the moisture detection device 11, the operator does not need to judge the detection result by himself, improving the automation of the device and reducing the operation difficulty of the device.

[0047] As a further technical solution, it further includes: a mixing member 17 is arranged on the support frame 1, and the mixing member 17 is used to mix the crushed coal sample evenly.

[0048] In this embodiment, the mixer 17 is used to mix the materials sieved by the sieve 3 and the materials crushed by the crusher 6. Since these two materials are from the same batch, they need to be mixed by the mixer 17 after crushing to ensure the uniformity of the coal sample. The mixer 17 can receive the materials from the guiding member and the outlet of the crusher 6. The design of the overall positions of the three functions of screening, crushing, and mixing is very compact, enabling the coal sample preparation to be carried out quickly, improving the integrity, and ensuring the processing efficiency.

[0049] As a further technical solution, the mixer 17 is located at the bottom of the guiding plate 4 and the crusher 6.

[0050] In this embodiment, the mixer 17 is located at the bottom of the crusher 6 and the feed inlet of the mixer 17 is directly below the guiding plate 4 and the crusher 6. The crushed materials will directly fall into the feed inlet, ensuring the processing quality and efficiency.

[0051] As a further technical solution, the mixer 17 is a vibrating riffle splitter.

[0052] In this embodiment, after the pulverized coal after screening or crushing enters the vibrating riffle splitter and undergoes the vibration of the vibrating riffle splitter, it can not only be evenly distributed but also be completely mixed. Moreover, the operator can use the riffle splitter to divide the materials repeatedly, reducing the difficulty of taking samples.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A pre-screening coal sample preparation device with moisture detection and mixing functions, characterized in that: include: Support frame (1); A conveying member (2) is arranged on the support frame (1), and the conveying member (2) is used to convey the coal sample; A screen (3) is arranged on the support frame (1), and the screen (3) is arranged at an angle; A guide plate (4) is arranged on the conveying member (2), the guide plate (4) is located below the screen (3), and the guide plate (4) is used to guide the powder sieved out by the screen (3); A crusher (6) is arranged on the support frame (1), and the crusher (6) is used to crush large pieces of coal sample left on the screen (3).

2. A pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 1, characterized in that: The conveying member (2) comprises: A conveying frame (8) arranged on the supporting frame (1); There are a plurality of rotating rollers (9), which are rotatably arranged on the conveying frame (8), and the plurality of rotating rollers (9) are arranged in an array at intervals along the coal sample conveying direction; A conveyor belt (10) is arranged on the rotating roller (9).

3. The pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 1 is characterized in that: Also includes: A moisture detection device (11) is arranged on the support frame (1) in a lifting manner, and after the moisture detection device (11) is lifted, it enters or leaves the coal sample; The first telescopic member (12) is arranged on the support frame (1), the first telescopic member (12) has a first telescopic end (13), the moisture detection device (11) is arranged on the first telescopic end (13), and the first telescopic member (12) is used to drive the moisture detection device (11) to rise and fall.

4. A pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 3, characterized in that: Also includes: A second telescopic member (14) is arranged on the support frame (1), the second telescopic member (14) having a second telescopic end (15); A push plate (16) is arranged on the second telescopic end (15), and the second telescopic member (14) is used to push the coal sample away from the conveying member (2).

5. A pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 4, characterized in that: The moisture detection device (11) is capable of controlling the movement of the second telescopic member (14).

6. The pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 1 is characterized in that: Also includes: A mixing element (17) is arranged on the support frame (1), and the mixing element (17) is used to mix the crushed coal sample evenly.

7. A pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 6, characterized in that: The mixing element (17) is located between the guide plate (4) and the bottom of the crusher (6).

8. The pre-screening coal sample preparation device with moisture detection and mixing functions according to claim 6, characterized in that: The mixing element (17) is a vibrating divisor.

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