Sampling and crushing integrated equipment for low-calorie coal

Abstract

The invention discloses low-calorie coal sampling and crushing integrated equipment which comprises a bridge type sampling machine, a crushing machine and a feeding machine and further comprises a split-flow sampling system used for splitting and sampling incoming materials of the feeding machine, and the split-flow sampling system comprises a conveying direction adjusting assembly. The conveying direction adjusting assembly is used for being connected with the feeding machine and the crusher and can transfer part of incoming materials through the bypass sample sliding groove, the tail end of the bypass sample sliding groove is connected with a grouping assembly, and the grouping assembly can sample the incoming materials and transfer the incoming materials at an outlet of the grouping assembly in a classified mode according to reserved samples and abandoned samples. The integrated equipment can realize automatic bypass sampling in a blocked state of the crusher by arranging the shunting sampling system consisting of the conveying direction adjusting assembly, the bypass sample sliding groove and the grouping assembly, so that the safety risk and the sampling reliability risk caused by manual sampling are avoided, and the reliability and the safety of the integrated equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal sampling and detection, and in particular to low-calorie coal sampling and crushing integrated equipment. Background Art

[0002] The main purpose of coal inspection at thermal power plants is to ensure that the quality of coal meets the contract requirements, provide data support for the safe and economical operation of boilers, and study coal quality characteristics to optimize combustion conditions. This will enable better management of coal procurement, storage and combustion processes, ensuring efficient operation and economic benefits of power plants. At the same time, this also provides support for environmental protection and reduces environmental pollution caused by burning unqualified coal.

[0003] The inspection process of incoming coal includes sampling, sample preparation and chemical analysis of samples. However, the current sampling, sample preparation and chemical analysis of incoming coal are carried out separately, which will lead to more manpower and material resources being consumed in the connection between each step, thereby reducing the efficiency of incoming coal inspection and increasing the operating cost of thermal power plants.

[0004] The Chinese utility model patent with patent application number CN202220663506.0 records an integrated coal sampling and crushing equipment, which collects preliminary coal samples through a spiral sampling head, and then directly transports the preliminary coal samples to the crusher through a feeder for crushing and sampling. The preliminary sample is thus realized in an integrated manner, and the sampling and sample preparation of incoming coal is effectively improved. The efficiency of incoming coal detection work is effectively improved. However, in the above-mentioned equipment, during the sample preparation process of the crusher, due to the certain water content of the coal, the coal will adhere to the inner wall of the crusher, thereby causing the sample preparation system to be blocked and reducing the sample preparation speed. At this time, the sampling personnel are often required to manually sample the subsequent incoming coal to ensure that the incoming coal can enter the factory smoothly. However, this will cause personal safety risks for the sampling personnel during manual sampling. At the same time, the sampling personnel may not follow the prescribed process for sampling in order to save trouble, resulting in the collected samples not meeting the requirements and affecting the subsequent sample test results, threatening the normal power generation safety of the thermal power plant. Summary of the invention

[0005] In view of the shortcomings in the prior art, the present invention provides an integrated low-calorie coal sampling and crushing equipment. The integrated equipment can realize automatic bypass sampling in the crusher blockage state by setting a diversion sampling system composed of a conveying direction adjustment component, a bypass sample chute and a reduction component, thereby avoiding the safety risks and sampling reliability risks caused by manual sampling, and improving the reliability and safety of the integrated equipment.

[0006] A low-calorie coal sampling and crushing integrated equipment, including a bridge sampler, a crusher, a feeder, and also a diversion sampling system for diverting and sampling the incoming materials from the feeder, the diversion sampling system including a conveying direction adjustment component, the conveying direction adjustment component is used to connect the feeder and the crusher and can transfer part of the incoming materials through a bypass chute, the end of the bypass chute is connected to a reduction component, the reduction component can sample the incoming materials and transfer the incoming materials at its outlet according to the retained samples and discarded samples.

[0007] As a preferred embodiment of the above technical solution, the conveying direction adjustment component includes a conveying box, which is provided with a first feed port, a first discharge port and a second discharge port, the first feed port is used to receive the material from the feeder, the first discharge port is connected to a crusher installed at the bottom of the conveying box, the second discharge port is connected to one end of the bypass sample chute, and a rotating plate is installed inside the conveying box, the rotating plate is driven to rotate by a rotating mechanism, and the first feed port is connected to the first discharge port or the first feed port is connected to the second discharge port through the rotation change of the position of the rotating plate.

[0008] As a preferred embodiment of the above technical solution, the rotating plate is rotatably connected to the inner lower edge of the second discharge port.

[0009] As a preferred embodiment of the above technical solution, the reduction component includes a reduction box, the second feed port of the reduction box is connected to the other end of the bypass sample chute, and the third discharge port of the reduction box is connected to an upper sample retention chute and a lower sample disposal chute.

[0010] As a preferred embodiment of the above technical solution, a cutter assembly, a clamping sampling assembly and a guide plate are sequentially provided in the reduction box along the direction from the second feed port to the third discharge port. The guide plate and the bottom plate of the reduction box are inclined downward toward the third discharge port, and the guide plate and the bottom plate of the reduction box are respectively connected to the upper sample retention groove and the lower sample disposal groove.

[0011] As a preferred embodiment of the above technical solution, the cutting knife assembly includes a cross-cutter and a longitudinal cutter, and the cross-cutter and the longitudinal cutter are driven by a driving member to rise and fall perpendicular to the bottom plate of the reduction box, and the cross-cutter is arranged parallel to the second feed port of the reduction box, and a plurality of longitudinal cutters are provided, and the plurality of longitudinal cutters are evenly and vertically installed on the side of the cross-cutter away from the second feed port.

[0012] As a preferred embodiment of the above technical solution, the clamping sampling assembly includes a clamping plate and a push plate arranged in parallel, the clamping plate and the push plate cooperate to clamp the sample and can be driven by a driving member to rise and fall perpendicular to the bottom plate of the reduction box, the clamping plate is limited by rotation of a torsion spring, and the push plate is driven by the driving member to move toward the clamping plate, pushing the sample above the guide plate while squeezing and flipping the clamping plate.

[0013] As a preferred embodiment of the above technical solution, the bypass sample chute, the upper sample retention chute and the lower sample discard chute are arranged in a herringbone shape.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting up the conveying direction adjustment component and the bypass sample chute, when the crusher is seriously blocked, the preliminary coal sample that was originally to be sent into the crusher can be diverted and conveyed to the bypass sample chute, thereby ensuring that the sampling work will not be affected by the blockage of the sample preparation process, and realizing automatic bypass sampling, avoiding the safety risks and sampling reliability risks caused by manual sampling, thereby improving the reliability and safety of the integrated equipment; by setting up the reduction component, part of the preliminary coal sample can be intercepted more accurately and orderly as the raw material for the subsequent sample preparation process, making the intercepted sample more representative, improving the accuracy of the subsequent laboratory test data, and effectively improving the reliability and practicality of the integrated equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the invention.

[0017] Figure 2 Schematic diagram of the internal structure of the conveyor box.

[0018] Figure 3 Schematic diagram of the internal structure of the reduction box.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] The accompanying drawings are marked as follows: 1, crusher, 2-feeder, 3-conveying direction adjustment component, 31-conveying box, 32-first feed port, 33-first discharge port, 34-second discharge port, 35-turn plate, 36-rotation mechanism, 4-bypass sample chute, 5-reduction component, 51-reduction box, 52-cutter component, 521-cross-cutting knife, 522-longitudinal cutting knife, 523-first cylinder, 53-clamping sampling component, 531-clamping plate, 532-push plate, 533-second cylinder, 534-lifting plate, 535-third cylinder, 54-guide plate, 6-upper sample retention trough, 7-lower sample disposal trough. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0023] like Figure 1 The low-calorie coal sampling and crushing integrated equipment shown in the figure includes a bridge sampler (the bridge sampler is an existing mature technology and is not shown in the attached figure), a crusher 1, and a feeder 2, wherein a feed hopper 21 for receiving the incoming material from the bridge sampler is provided at the feed port of the feeder 1, and also includes a diversion sampling system for diverting and sampling the incoming material from the feeder 2, the diversion sampling system includes a conveying direction adjustment component 3, the conveying direction adjustment component 3 is used to connect the feeder 2 and the crusher 1 and can transfer part of the incoming material through a bypass sample chute 4, the end of the bypass sample chute 4 is connected to a reduction component 5, the reduction component 5 can sample the incoming material and transfer the incoming material at its outlet according to the retained sample and discarded sample classification.

[0024] In this embodiment, if Figure 2 As shown, the conveying direction adjustment component 3 includes a conveying box 31, and the conveying box 31 is provided with a first feed port 32, a first discharge port 33 and a second discharge port 34. The first feed port 32 is used to receive the material from the feeder 2, the first discharge port 33 is connected to the crusher 1 installed at the bottom of the conveying box 31, and the second discharge port 34 is connected to one end of the bypass sample chute 4. A rotating plate 35 is installed inside the conveying box 31, and the rotating plate 35 is driven to rotate by a rotating mechanism 36. The rotation change of the position of the rotating plate 35 realizes the switching of the two states of the first feed port 32 being connected to the first discharge port 33 or the first feed port 32 being connected to the second discharge port 34.

[0025] In this embodiment, the rotating plate 35 is rotatably connected to the inner lower edge of the second discharge port 34 .

[0026] It is necessary to supplement the description that the rotating mechanism 36 includes a first rotating shaft rotatably connected between the front and rear inner walls of the conveying box 31, the rotating plate 35 is fixedly sleeved on the first rotating shaft, and the rotating mechanism 36 also includes a first motor fixedly connected to the front of the conveying box 31, the output end of the first motor passes through the front wall of the conveying box and is fixedly connected to the front end of the first rotating shaft, and the rotating mechanism 36 can drive the rotating plate 35 to rotate up and down to respectively block the second discharge port 34 of the first discharge port 33. The advantage of this setting is that it can realize automatic sampling when the crusher 1 is blocked, avoiding the need for manual sampling, and improving the safety and reliability of the integrated equipment.

[0027] In this embodiment, if Figure 3 As shown, the shrinking component 5 includes a shrinking box 51, a second feed port of the shrinking box 51 is connected to the other end of the bypass sample chute 4, and a third discharge port of the shrinking box 51 is connected to an upper sample retention chute 6 and a lower sample discarding chute 7.

[0028] In this embodiment, the bypass sample chute 4, the upper sample retention chute 6 and the lower sample discarding chute 7 are arranged in a herringbone shape.

[0029] By setting up the shrinking box 51, the preliminary coal sample sliding out of the bypass sample chute 4 can be diverted, and only a part of the sample can be taken as the raw material for subsequent sample preparation through the upper sample retention chute 6, thereby reducing the number of samples and the workload of subsequent sample preparation and testing. In addition, part of the preliminary coal sample can be intercepted more accurately and orderly as the raw material for the subsequent sample preparation process, making the intercepted sample more representative, improving the accuracy of the subsequent test data, and effectively improving the reliability and practicality of the integrated equipment.

[0030] In this embodiment, a cutter assembly 52, a clamping sampling assembly 53 and a guide plate 54 are sequentially provided in the reduction box 51 along the direction from the second feed port to the third discharge port. The guide plate 54 and the bottom plate of the reduction box 51 are inclined downward toward the third discharge port, and the guide plate 54 and the bottom plate of the reduction box 51 are respectively connected to the upper sample retention groove 6 and the lower sample disposal groove 7.

[0031] In this embodiment, the cutting knife assembly 52 includes a cross-cutter 521 and a longitudinal cutter 522. The cross-cutter 521 and the longitudinal cutter 522 are driven by a driving member to rise and fall perpendicular to the bottom plate of the reduction box 51. The cross-cutter 521 is arranged parallel to the second feed port of the reduction box 51. There are multiple longitudinal cutters 522, and the multiple longitudinal cutters 522 are evenly and vertically installed on the side of the cross-cutter 521 away from the second feed port.

[0032] It is necessary to add that, if Figure 4As shown, the driving member for driving the cross-cutter 521 and the longitudinal cutter 522 to rise and fall perpendicularly to the bottom plate of the reduction box 51 includes two first cylinders 523 symmetrically fixedly connected at the top of the reduction box 51, the output ends of the two first cylinders 523 pass through the top wall of the reduction box 51 and are fixedly connected to the cross-cutter 521, the front and rear side surfaces of the cross-cutter 521 are respectively fitted with the front and rear inner walls of the reduction box 51, and the right side surface of the cross-cutter 521 is fitted with the left end of the feed port of the reduction box 51, the cross-cutter 521 and the longitudinal cutter 522 are arranged, the sample that slides from the bypass sample chute 4 into the reduction box 51 can be cut, so as to facilitate the subsequent clamping sampling mechanism 53 to intercept part of the sample, thereby ensuring the smooth progress of the bypass sampling work, and further improving the reliability and practicality of the integrated equipment.

[0033] In this embodiment, the clamping sampling assembly 53 includes a clamping plate 531 and a push plate 532 arranged in parallel. The clamping plate 531 and the push plate 532 cooperate to clamp the sample and can be driven by a driving member to rise and fall perpendicular to the bottom plate of the reduction box 51. The clamping plate 531 is limited by the rotation of a torsion spring, and the push plate 532 is driven by the driving member to move toward the clamping plate, and the sample is pushed to the top of the guide plate 54 while squeezing and flipping the clamping plate 531.

[0034] It should be supplemented that the clamping sampling assembly 5 includes two groups of second cylinders 533 symmetrically fixedly connected to the top of the shrink box 51, the output ends of the two groups of second cylinders 533 pass through the top wall of the shrink box 51 and are symmetrically fixedly connected to two lifting plates 534, the bottom of the lifting plate 534 is fixedly connected to a third cylinder 535, and the push plate 532 is fixedly connected to the output end of the third cylinder 535. The clamping plate 531 is rotatably connected to the bottom of the lifting plate 534 through a connecting mechanism composed of a rotating rod and a torsion spring and is arranged parallel to the clamping plate 531. The push plate 532 is pushed toward the clamping plate 531 by the third cylinder 535, so that the push plate 531 can be pushed by the second torsion spring. Under the action of elastic force, the clamping plate 531 is used to clamp the sample to be intercepted, and then the second cylinder 533 is started to drive the sample to move upward to the highest point, and then the third cylinder 535 is started to continue to extend rapidly, so as to overcome the elastic force of the torsion spring to squeeze, flip and push the clamping plate 531 open and push the intercepted sample to the top of the guide plate 54. Then the sample slides out along the upper sample retention groove 6 to complete the sample diversion work. At the same time, after the push plate 532 retreats and resets under the action of the third cylinder 535, the clamping plate 531 will also reset under the tension of the torsion spring, preparing for the second clamping sampling, and the remaining material in the reduction box 1 slips away through the lower sample disposal groove 7.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-calorie coal sampling and crushing integrated equipment, including a bridge sampler, a crusher, and a feeder, characterized in that: The invention comprises a diversion sampling system for diverting and sampling the incoming materials from the feeder, wherein the diversion sampling system comprises a conveying direction adjusting component, wherein the conveying direction adjusting component is used to connect the feeder and the crusher and can transfer part of the incoming materials through a bypass sample chute, wherein a reduction component is connected to the end of the bypass sample chute, and the reduction component can sample the incoming materials and transfer the incoming materials at its outlet according to the classification of retained samples and discarded samples.

2. The low-calorie coal sampling and crushing integrated equipment according to claim 1 is characterized in that: The conveying direction adjustment component includes a conveying box, which is provided with a first feed port, a first discharge port and a second discharge port. The first feed port is used to receive the material from the feeder, the first discharge port is connected to a crusher installed at the bottom of the conveying box, and the second discharge port is connected to one end of the bypass sample chute. A rotating plate is installed inside the conveying box, and the rotating plate is driven to rotate by a rotating mechanism. The first feed port is connected to the first discharge port or the first feed port is connected to the second discharge port through the rotation change of the position of the rotating plate.

3. The low-calorie coal sampling and crushing integrated equipment according to claim 1 is characterized in that: The rotating plate is rotatably connected to the inner lower edge of the second discharge port.

4. The low-calorie coal sampling and crushing integrated equipment according to claim 2 is characterized in that: The shrinking component includes a shrinking box, a second feed port of the shrinking box is connected to the other end of the bypass sample chute, and a third discharge port of the shrinking box is connected to an upper sample retention chute and a lower sample discarding chute.

5. The low-calorie coal sampling and crushing integrated equipment according to claim 4 is characterized in that: A cutter assembly, a clamping sampling assembly and a guide plate are sequentially arranged in the reduction box along the direction from the second feed port to the third discharge port. The guide plate and the bottom plate of the reduction box are inclined downward toward the third discharge port, and the guide plate and the bottom plate of the reduction box are respectively connected to the upper sample retention groove and the lower sample disposal groove.

6. The low-calorie coal sampling and crushing integrated equipment according to claim 5 is characterized in that: The cutting knife assembly includes a cross-cutter and a longitudinal cutter, and the cross-cutter and the longitudinal cutter are driven by a driving member to rise and fall perpendicularly to the bottom plate of the reduction box. The cross-cutter is arranged parallel to the second feed port of the reduction box, and there are multiple longitudinal cutters, which are evenly and vertically installed on the side of the cross-cutter away from the second feed port.

7. The low-calorie coal sampling and crushing integrated equipment according to claim 5 is characterized in that: The clamping sampling assembly includes a clamping plate and a push plate arranged in parallel. The clamping plate and the push plate cooperate to clamp the sample and can be driven by a driving member to rise and fall perpendicular to the bottom plate of the reduction box. The clamping plate is limited by the rotation of a torsion spring, and the push plate is driven by the driving member to move toward the clamping plate, pushing the sample above the guide plate while squeezing and flipping the clamping plate.

8. The low-calorie coal sampling and crushing integrated equipment according to claim 4 is characterized in that: The bypass sample chute, the upper sample retaining chute and the lower sample discarding chute are arranged in a herringbone shape.

Images