Chain bucket reduction device and reduction method

Abstract

The present invention discloses a chain bucket reduction device and reduction method, comprising a driving sprocket, a passive sprocket, an intermediate reversing wheel, a first hopper, a second hopper, a third hopper and a chain, wherein the chain is sequentially wound around the driving sprocket, the passive sprocket and the intermediate reversing wheel, the intermediate reversing wheel is located between the driving sprocket and the passive sprocket, the first hopper is arranged on the chain, when the chain moves left and right, the first hopper reciprocates around the two sides of the driving sprocket, the second hopper reciprocates around the two sides of the intermediate reversing wheel, and the third hopper reciprocates around the two sides of the passive sprocket. The driving sprocket drives the passive sprocket and the intermediate reversing wheel to rotate through the chain, when the first hopper, the second hopper and the third hopper move to the bottom of the drop port, the first hopper, the second hopper and the third hopper cut the material and collect samples, and the first hopper, the second hopper and the third hopper complete the operation cycle and complete the sampling of different samples of the material, thereby solving the problem that the number of sample portions retained in the existing reduction device is small.

Description

Technical Field

[0001] The present invention relates to the technical field of reduction equipment, and in particular to a chain bucket reduction device and a reduction method. Background Art

[0002] Reduction is the process of dividing a sample into several representative and separate parts. It is a method of reducing the mass of the sample without changing the particle size. A reducer is a device that uses a cutter to cut sub-samples from a material flow.

[0003] In the process of automatic sample preparation, more and more cases require the reducer to reduce more than two sub-samples in one reduction process. At the same time, the overall height of the reducer should be as low as possible, there should be no particle size segregation during the reduction process, an adjustable reduction ratio should be achieved for samples of different qualities, and the distance between sub-samples should be far apart to facilitate the overall layout. Although the existing reducer can obtain two samples through reciprocating motion, the working conditions are complicated and affect the service life of the driving mechanism.

[0004] Therefore, how to solve the problem that the existing reducers retain less samples and have a short service life is a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] The purpose of the invention is to provide a chain bucket reduction device, which solves the problem that the existing reduction device has a small number of sample retaining portions and a short service life.

[0006] In order to solve the above technical problems, the present invention provides a chain bucket reduction device, including a driving sprocket, a passive sprocket, an intermediate reversing wheel, a first hopper, a second hopper, a third hopper and a chain, the chain is sequentially wound around the driving sprocket, the passive sprocket and the intermediate reversing wheel, the intermediate reversing wheel is located between the driving sprocket and the passive sprocket, the first hopper is arranged on the chain, when the chain moves left and right, the first hopper reciprocates around both sides of the driving sprocket, the second hopper reciprocates around both sides of the intermediate reversing wheel, and the third hopper reciprocates around both sides of the passive sprocket.

[0007] Preferably, the intermediate reversing wheel is located below the driving sprocket and the driven sprocket.

[0008] Preferably, a first material opening for collecting the first material hopper is provided below the driving sprocket.

[0009] Preferably, a second material port for collecting a second hopper is provided below the intermediate reversing wheel.

[0010] Preferably, a third material port for collecting the third material hopper is provided below the passive sprocket.

[0011] Preferably, a discard port is provided between the second material port and the third material port.

[0012] A chain bucket reduction method, comprising:

[0013] The time for the chain to run leftward and rightward once is a single cycle time, and the time for the first hopper, the second hopper and the third hopper to cut the coal flow is the effective cutting time;

[0014] The ratio of the effective cutting time to the single cycle time is adjusted.

[0015] Preferably, the running speed of the chain in the non-cutting area is adjusted; wherein the non-cutting area is an area where the first hopper, the second hopper and the third hopper do not cut the coal flow.

[0016] Preferably, the residence time of the chain in the non-cutting zone is adjusted; wherein the non-cutting zone is an area where the first hopper, the second hopper and the third hopper do not cut the coal flow.

[0017] The chain bucket reduction device provided by the present invention comprises a driving sprocket, a passive sprocket, an intermediate reversing wheel, a first hopper, a second hopper, a third hopper and a chain. The chain is sequentially wound around the driving sprocket, the passive sprocket and the intermediate reversing wheel. The intermediate reversing wheel is located between the driving sprocket and the passive sprocket. The first hopper is arranged on the chain. When the chain moves left and right, the first hopper reciprocates around both sides of the driving sprocket, the second hopper reciprocates around both sides of the intermediate reversing wheel, and the third hopper reciprocates around both sides of the passive sprocket. The driving device drives the driving sprocket to rotate, and the driving sprocket drives the chain to rotate. Since the chain is sequentially wound around the driving sprocket, the passive sprocket and the intermediate reversing wheel, the rotation of the chain will drive the passive sprocket and the intermediate reversing wheel to rotate. At this time, since the first hopper, the second hopper and the third hopper are all arranged on the chain, the rotation of the chain drives the first hopper, the second hopper and the third hopper to move. When the first hopper, the second hopper and the third hopper move below the drop opening, the first hopper, the second hopper and the third hopper cut the material to collect samples, and as the chain rotates left and right, the first hopper pours the material sample into the sample collection device when it reciprocates around the two sides of the driving sprocket, the second hopper pours the material sample into the sample collection device when it reciprocates around the two sides of the intermediate reversing wheel, and the third hopper pours the material sample into the sample collection device when it reciprocates around the two sides of the passive sprocket, thereby completing the sampling of different samples of the material. Through the above-mentioned chain bucket reduction method, combined with the reduction device disclosed in the present application, the material can be reduced by a fixed mass. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 A schematic diagram of the overall structure of a specific implementation method provided by the present invention;

[0020] Figure 2 for Figure 1 The structure shown is in a schematic diagram of a leftward running state;

[0021] Figure 3 for Figure 1 The structure shown is a schematic diagram of the structure in the rightward running state.

[0022] in, Figure 1-Figure 3 middle:

[0023] Driving sprocket-1, driven sprocket-2, intermediate reversing wheel-3, first hopper-4, second hopper-5, third hopper-6, chain-7, first material port-8, second material port-9, third material port-10, discarding port-11. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the overall structure of a specific implementation method provided by the present invention; Figure 2 for Figure 1 The structure shown is in a schematic diagram of a leftward running state; Figure 3 for Figure 1 The structure shown is in a rightward running state. The arrow in the figure indicates the direction of coal flow movement.

[0026] In a specific embodiment provided by the present invention, it mainly includes a driving sprocket 1, a passive sprocket 2, an intermediate reversing wheel 3, a first hopper 4, a second hopper 5, a third hopper 6 and a chain 7. The chain 7 is sequentially wound around the driving sprocket 1, the passive sprocket 2 and the intermediate reversing wheel 3. The intermediate reversing wheel 3 is located between the driving sprocket 1 and the passive sprocket 2. The first hopper 4 is arranged on the chain 7. When the chain 7 moves left and right, the first hopper 4 reciprocates around both sides of the driving sprocket 1, the second hopper 5 reciprocates around both sides of the intermediate reversing wheel 3, and the third hopper 6 reciprocates around both sides of the passive sprocket 2.

[0027] Among them, the driving sprocket 1 drives the chain 7 to rotate under the drive of the driving device, and the chain 7 drives the passive sprocket 2 and the intermediate reversing wheel 3 to rotate. The first hopper 4, the second hopper 5, and the third hopper 6 cut and sample the materials respectively. The first hopper 4 pours the material sample into the sample collecting device when it reciprocates around the two sides of the driving sprocket 1, the second hopper 5 pours the material sample into the sample collecting device when it reciprocates around the two sides of the intermediate reversing wheel 3, and the third hopper 6 pours the material sample into the sample collecting device when it reciprocates around the two sides of the passive sprocket 2.

[0028] Specifically, in the actual application process, the driving device drives the active sprocket 1 to rotate, and the active sprocket 1 drives the chain 7 to rotate. Since the chain 7 is sequentially wound around the active sprocket 1, the passive sprocket 2 and the intermediate reversing wheel 3, the rotation of the chain 7 will drive the passive sprocket 2 and the intermediate reversing wheel 3 to rotate. At this time, since the first hopper 4, the second hopper 5, and the third hopper 6 are all arranged on the chain 7, the rotation of the chain 7 drives the first hopper 4, the second hopper 5, and the third hopper 6 to move. When the hopper 6 moves to the bottom of the material drop port, the first hopper 4, the second hopper 5, and the third hopper 6 cut the material to collect samples, and as the chain 7 rotates left and right, the first hopper 4 pours the material sample into the sample collecting device when it reciprocates around the two sides of the driving sprocket 1, the second hopper 5 pours the material sample into the sample collecting device when it reciprocates around the two sides of the middle reversing wheel 3, and the third hopper 6 pours the material sample into the sample collecting device when it reciprocates around the two sides of the driven sprocket 2, thereby completing the sampling of different samples of the material.

[0029] It should be noted that the sampling process of the second hopper 5 is completed below the horizontal position of the chain 7. Therefore, there are two chains 7, one of which fixes the first hopper 4 and the third hopper 6, and the other fixes the second hopper 5, to ensure that the second hopper 5 can perform cutting and sampling completely. When the chain 7 rotates counterclockwise, the second hopper 5 and the third hopper 6 complete a complete cutting and sampling by walking left for one cycle. When the chain 7 rotates clockwise, the first hopper 4, the second hopper 5, and the third hopper 6 complete a complete cutting and sampling by walking right for one cycle. The left walking cycle plus the right walking cycle is called a round trip operation.

[0030] Based on the above embodiment, as a preferred embodiment, the intermediate reversing wheel 3 is located below the driving sprocket 1 and the driven sprocket 2. The intermediate reversing wheel 3 is located below the driving sprocket 1 and the driven sprocket 2, and after the second hopper 5 cuts and samples, the second hopper 5 pours the material sample into the sample collection device while reciprocating around the two sides of the intermediate reversing wheel 3.

[0031] On the basis of the above embodiment, as a preference, a first material port 8 for collecting the first hopper 4 is provided below the driving sprocket 1; a second material port 9 for collecting the second hopper 5 is provided below the intermediate reversing wheel 3; and a third material port 10 for collecting the third hopper 6 is provided below the driven sprocket 2. When the chain 7 drives the first hopper 4, the second hopper 5, and the third hopper 6 to run the left walking cycle, the second hopper 5 and the third hopper 6 move to the bottom of the drop port, and the second hopper 5 and the third hopper 6 cut and sample the material. At this time, the chain 7 drives the first hopper 4, the second hopper 5, and the third hopper 6 to run the right walking cycle, and the first hopper 4, the second hopper 5, and the third hopper 6 are cut and sampled. The second hopper 5 pours the material sample into the second material port 9 when it reciprocates around the two sides of the middle reversing wheel 3, and the third hopper 6 pours the material sample into the third material port 10 when it reciprocates around the two sides of the passive sprocket 2. The chain 7 continues to drive the first hopper 4, the second hopper 5, and the third hopper 6 to run the left walking cycle. At this time, the first hopper 4 performs the second cutting sampling, and the second hopper 5 and the third hopper 6 perform the cutting sampling of the next cycle. The first hopper 4 pours the material sample into the first material port 8 when it reciprocates around the two sides of the active sprocket 1.

[0032] Based on the above embodiment, as a preferred embodiment, a discard port 11 is provided between the second material port 9 and the third material port 10. The discard port 11 is used to collect waste materials in the cutting and sampling process of the first hopper 4, the second hopper 5, and the third hopper 6.

[0033] It should be noted that, according to the design principle of this application, theoretically, adding a steering wheel can add one sample, which will not be elaborated here.

[0034] The present application also discloses a chain bucket reduction method, wherein the time for the chain 7 to run leftward and rightward once is a single cycle time, and the time for the first hopper 4, the second hopper 5 and the third hopper 6 to cut the coal flow is an effective cutting time;

[0035] Specifically, the first hopper 4, the second hopper 5 and the third hopper 6 cut the coal flow at a fixed speed, the number and opening of the first hopper 4, the second hopper 5 and the third hopper 6 are fixed values, and under the premise of uniform and continuous coal flow, the ratio of the coal flow cutting time of the first hopper 4, the second hopper 5 and the third hopper 6 and the single-cycle cycle time of the chain bucket is the reduction ratio. By setting the program and setting the running speed, the single-cycle cycle time can be changed to adjust the reduction ratio, thereby achieving the fixed quality reduction target; taking three samples as an example, a fixed running speed V (m / s) is set, the number of the first hopper 4 is n1, the opening width is D1, and the chain 7 has a total length of L, the number of the second hoppers 5 is n2, and the opening width is D2; the number of the third hoppers 6 is n3, and the opening width is D3; the effective cutting time of the first retained sample is: n1*D1 / V(s), and the cycle time of the entire cycle is: L / V(s), so the reduction ratio that can be achieved by the reducer is: i=effective cutting time / cycle time=n1*D1 / L, from which it can be inferred that the mass of the second retained sample is: the mass of the first retained sample*n2*D2 / n1 / D1(Kg), and similarly, the mass of the third retained sample is: the mass of the first retained sample*n3*D3 / n1 / D1(Kg).

[0036] Adjust the ratio of effective cutting time to single cycle time;

[0037] Specifically, by adjusting the ratio of the effective cutting time and the single-cycle period time, two samples can be reduced in mass according to a fixed quality. The chain 7 runs at a fixed speed. Since the opening widths and the number of the first hopper 4, the second hopper 5 and the third hopper 6 are fixed values, the effective cutting time for retaining samples is a fixed value. The first hopper 4, the second hopper 5 and the third hopper 6 run in a left and right reciprocating cycle. As the quality of the incoming samples changes, in order to achieve fixed-quality reduction, the reduction ratio must be changed. After the reducer is manufactured, the length of its chain 7 is a fixed value, that is, the single-cycle continuous operation time is also fixed. In order to adjust the reduction ratio, it is necessary to adjust the length of the chain in a disguised manner (that is, adjust the single-cycle operation time in a disguised manner). The adjustment of the single-cycle operation time can be achieved by, on the one hand, changing the speed of the non-cutting zone through a program; on the other hand, the adjustment of the single-cycle operation time can be achieved by staying in the non-cutting zone.

[0038] Specifically, the running speed of the chain 7 in the non-cutting area is adjusted; wherein the non-cutting area is an area where the first hopper 4, the second hopper 5 and the third hopper 6 do not cut the coal flow. By setting and changing the running speeds of the first hopper 4, the second hopper 5 and the third hopper 6 in the non-cutting area, the single-cycle running time of the entire cutting process of the running speed of the non-cutting area can be increased, thereby achieving the reduction of the material by a fixed mass.

[0039] On the other hand, the purpose is achieved by adjusting the residence time of the chain 7 in the non-cutting area; wherein the non-cutting area is the area where the first hopper 4, the second hopper 5 and the third hopper 6 do not cut the coal flow. Specifically, the chain 7 is set to a fixed running speed V (m / s), the number of the first hopper 4 is n1, the opening width is D1, the total length of the chain 7 is L, the number of the second hopper 5 is n2, the opening width is D2, the number of the third hopper 6 is n3, the opening width is D3, the incoming material mass is M (Kg), the weight of the first retained sample is M1 (Kg), and the maximum reduction ratio is calculated as: i0 = n1*D1 / L, the reduction ratio must be less than or equal to the maximum reduction ratio, the first retained sample The cutting time of the sample is (s): t1 = n1*D1 / V, the reduction ratio calculation is: i = M1 / M, the running time required for a single cycle (s): t = cutting time of the first retained sample / reduction ratio = n1*D1 / V / (M1 / M), the time required for the chain 7 to run back and forth for one circle (s): t2 = L / V, the time required to stay in a single cycle is (s): t3 = t-t2, by adjusting the t3 value, the material can be reduced to a fixed mass.

[0040] To sum up, the chain bucket reduction device provided in this embodiment mainly includes a driving sprocket, a passive sprocket, an intermediate reversing wheel, a first bucket, a second bucket, a third bucket and a chain. The chain is sequentially wound around the driving sprocket, the passive sprocket and the intermediate reversing wheel. The intermediate reversing wheel is located between the driving sprocket and the passive sprocket. The first bucket is arranged on the chain. When the chain moves left and right, the first bucket reciprocates around both sides of the driving sprocket, the second bucket reciprocates around both sides of the intermediate reversing wheel, and the third bucket reciprocates around both sides of the passive sprocket. The driving device drives the active sprocket to rotate, and the active sprocket drives the chain to rotate. Since the chain is sequentially wound around the active sprocket, the passive sprocket and the intermediate reversing wheel, the rotation of the chain will drive the passive sprocket and the intermediate reversing wheel to rotate. At this time, since the first hopper, the second hopper and the third hopper are all arranged on the chain, the rotation of the chain drives the first hopper, the second hopper and the third hopper to move. When the first hopper, the second hopper and the third hopper move to the bottom of the material drop port, the first hopper, the second hopper and the third hopper cut the material and collect samples, and as the chain rotates left and right, the first hopper pours the material sample into the sample collecting device when it reciprocates around the two sides of the active sprocket, the second hopper pours the material sample into the sample collecting device when it reciprocates around the two sides of the intermediate reversing wheel, and the third hopper pours the material sample into the sample collecting device when it reciprocates around the two sides of the passive sprocket, thereby completing the sampling of different material samples.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chain bucket reduction device, characterized in that: The invention comprises a driving sprocket (1), a driven sprocket (2), an intermediate reversing wheel (3), a first hopper (4), a second hopper (5), a third hopper (6) and a chain (7), wherein the chain (7) is sequentially wound around the driving sprocket (1), the driven sprocket (2) and the intermediate reversing wheel (3), the intermediate reversing wheel (3) is located between the driving sprocket (1) and the driven sprocket (2), the first hopper (4) is arranged on the chain (7), and when the chain (7) moves left and right, the first hopper (4) reciprocates around the two sides of the driving sprocket (1), the second hopper (5) reciprocates around the two sides of the intermediate reversing wheel (3), and the third hopper (6) reciprocates around the two sides of the driven sprocket (2); The intermediate reversing wheel (3) comprises a first reversing wheel located below the driving sprocket (1) and the driven sprocket (2) and a second reversing wheel located below the first reversing wheel, the chain (7) is sequentially wound around the second reversing wheel and the first reversing wheel, and the second hopper (5) reciprocates around both sides of the first reversing wheel.

2. The chain bucket shrinking device according to claim 1, characterized in that: A first material opening (8) for collecting the first material hopper (4) is provided below the driving sprocket (1).

3. The chain bucket shrinking device according to claim 2, characterized in that: A second material opening (9) for collecting the second material hopper (5) is provided below the middle reversing wheel (3).

4. The chain bucket shrinking device according to claim 3, characterized in that: A third material opening (10) for collecting the third material hopper (6) is provided below the driven sprocket (2).

5. The chain bucket shrinking device according to claim 4, characterized in that: A discard port (11) is provided between the second material port (9) and the third material port (10).

6. A chain bucket reduction method, applied to the chain bucket reduction device according to any one of claims 1 to 5, characterized in that: The time for the chain (7) to run leftward and rightward once is a single cycle time, and the time for the first hopper (4), the second hopper (5) and the third hopper (6) to cut the coal flow is an effective cutting time; The ratio of the effective cutting time to the single cycle time is adjusted.

7. The chain bucket reduction method according to claim 6, characterized in that: The running speed of the chain (7) in the non-cutting area is adjusted; wherein the non-cutting area is an area where the first hopper (4), the second hopper (5) and the third hopper (6) do not cut the coal flow.

8. The chain bucket reduction method according to claim 6, characterized in that: The residence time of the chain (7) in the non-cutting zone is adjusted; wherein the non-cutting zone is an area where the first hopper (4), the second hopper (5) and the third hopper (6) do not cut the coal flow.

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