Coal sample preparation device

By improving the design of the waste pipe assembly and the air supply assembly, the coal blockage problem caused by the mixing of small and large waste particles was solved, and the efficient operation of the coal sample preparation device was achieved.

CN223650260UActive Publication Date: 2025-12-09CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202422507065.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-16
Publication Date
2025-12-09
Estimated Expiration
2034-10-16

AI Technical Summary

Technical Problem

In existing technology, small and large waste materials are mixed in the first branch pipe, which causes coal blockage in the first branch pipe.

Method used

The waste material pipe assembly was improved by connecting the outlet of the second branch pipe to the outlet of the first branch pipe and sending the waste material into the waste material collection device through the main pipe. At the same time, an air supply assembly was set up to dry the waste material and use rotating blades to break up the high viscosity coal sample to avoid blockage.

Benefits of technology

This effectively avoids coal blockage in the first branch pipe and the main pipe, reduces the possibility of coal blockage, and improves the operating efficiency and reliability of the sample preparation device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a coal sample preparation device which comprises a first sample preparation machine and a second sample preparation machine connected with the first sample preparation machine, the waste pipe assembly comprises a first branch pipe, a second branch pipe and a main pipe, a feeding port of the first branch pipe is connected with the first sampling machine, a feeding port of the second branch pipe is connected with the second sampling machine, and a discharging port of the second branch pipe is located on the downstream side of a discharging port of the first branch pipe; and the discharge port of the first branch pipe and the discharge port of the second branch pipe are both connected with the feed end of the main pipe. According to the coal sample preparation device disclosed by the utility model, the discharge port of the second branch pipe is connected to the discharge port at the tail end of the first branch pipe, and the discarded material is fed into the discarded material collecting device by the main pipe. The first branch pipe and the second branch pipe are arranged in parallel, waste materials in the second branch pipe cannot flow through the first branch pipe, and therefore coal blockage of the first branch pipe cannot be caused.
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Description

TECHNICAL FIELD

[0001] The utility model relates to coal sample preparation technical field, in particular to a coal sample preparation device. BACKGROUND

[0002] In coal inspection, it is very important to accurately sample and prepare representative samples, and a coal sample preparation device is generally used for sample preparation in the detection process. The sample preparation process generally includes drying, crushing, division and grinding processes, and the prepared coal sample can be used for sample analysis.

[0003] The existing technology discards the material pipe assembly, which generally connects the second branch pipe outlet at the position close to the first branch pipe inlet. This setting method has the following problems: small particle size coal sample discards in the second branch pipe enters the first branch pipe, and mixes with the large particle discards in the first branch pipe, so that the small particle discards fill the gap between the large particle discards, and then causes the first branch pipe to be blocked by coal. UTILITY MODEL CONTENT

[0004] The utility model provides a coal sample preparation device, which is used to solve the problem of mixing small particle discards with large particle discards in the first branch pipe in the prior art, which causes the first branch pipe to be blocked by coal.

[0005] The utility model provides a coal sample preparation device, which comprises a first sample preparation machine, a second sample preparation machine connected with the first sample preparation machine, and

[0006] The discard pipe assembly comprises a first branch pipe, a second branch pipe and a main pipe. The first branch pipe inlet is connected with the first sample preparation machine, the second branch pipe inlet is connected with the second sample preparation machine, the second branch pipe outlet is located on the downstream side of the first branch pipe outlet, and the first branch pipe outlet and the second branch pipe outlet are both connected with the main pipe inlet end.

[0007] Specifically, the discard pipe assembly further comprises:

[0008] The three-way assembly has three openings in communication with each other. The first branch pipe outlet, the second branch pipe outlet and the main pipe inlet end are all installed and connected with the three openings on the three-way assembly one by one.

[0009] Further, the three-way assembly is a three-way valve or a three-way pipe.

[0010] Optionally, the coal sample preparation device further comprises an air supply assembly, and the air supply assembly outlet is connected with the first branch pipe.

[0011] Preferably, the air supply assembly comprises a hot air blower and an air supply pipe. One end of the air supply pipe is connected with the hot air blower outlet, and the other end of the air supply pipe is connected at the first branch pipe inlet.

[0012] Optionally, the first sample preparation machine comprises a first crusher, a first divider and a reject hopper arranged in sequence.

[0013] The feeding port of the reject hopper is connected with the first divider, the discharging port is connected with the feeding port of the first branch pipe, and the reject hopper is internally provided with rotating blades.

[0014] Preferably, the sidewall of the reject hopper is provided with a transparent observation window.

[0015] Preferably, the particle size of the first crusher is 6mm-3mm.

[0016] Optionally, the second sample preparation machine comprises a second crusher and a second divider connected with each other, and

[0017] A drying machine is arranged for drying the coal sample subjected to secondary crushing and division by the second crusher and the second divider, and the drying machine is provided with a transparent observation window.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1. In the embodiment, the discharging port of the second branch pipe is connected at the tail end of the first branch pipe, and the main pipe is used to send the reject to the reject collecting device. That is, the first branch pipe and the second branch pipe are arranged in parallel, and the reject in the second branch pipe will not flow through the first branch pipe, so that the coal blockage of the first branch pipe is avoided.

[0020] In the embodiment, the diameter of the main pipe is larger than that of the first branch pipe and the second branch pipe, so that the possibility of coal blockage of the main pipe is reduced. In addition, the length of the main pipe is relatively short, the flow path of the coal sample reject in the main pipe is reduced, and the risk of coal blockage of the main pipe is further reduced.

[0021] 2. In the embodiment, the air supply assembly is arranged in communication with the reject pipe assembly, and the air supply assembly is used to supply air to the reject pipe assembly to dry the reject in the reject pipe assembly, so that the humidity and viscosity of the coal sample reject in the reject pipe assembly are reduced, and the coal blockage of the reject pipe assembly is avoided.

[0022] 3. Since the humidity and viscosity of the coal sample reject in the first branch pipe are higher than those of the coal sample reject in the second branch pipe, the air outlet of the air supply assembly is connected with the first branch pipe in the embodiment, so that the reject in the first branch pipe is dried, and the humidity and viscosity of the coal sample reject in the first branch pipe are reduced, and the coal blockage of the first branch pipe is avoided.

[0023] 4. In the embodiment, the rotating blades are arranged in the reject hopper, the rotating blades are used to scatter the coal sample with high viscosity, and the coal sample is prevented from blocking the feeding port of the first branch pipe and affecting the subsequent operation.

[0024] 5. A transparent observation window is installed on the side wall of the waste hopper to facilitate staff to observe whether the waste hopper is blocked. When staff find that the blockage is in place, they can carry out targeted unblocking or repair.

[0025] 6. The dryer is equipped with a transparent observation window, which makes it easy for staff to observe whether there is any coal blockage on the feed belt at the dryer. Attached Figure Description

[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the coal sample preparation device in an embodiment of this utility model.

[0028] Figure label:

[0029] 1. First prototype preparation machine; 11. Waste hopper; 12. First transparent observation window;

[0030] 2. Second sample preparation machine; 21. Dryer; 22. Second transparent observation window;

[0031] 3. Waste pipe assembly; 31. First branch pipe; 32. Second branch pipe; 33. Main pipe; 34. T-joint pipe;

[0032] 4. Air supply assembly; 41. Hot air blower; 42. Air supply duct;

[0033] 5. Conveyor belt;

[0034] 6. Waste collection device; 61. Waste collection belt; 62. Third transparent observation window. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] This utility model provides a coal sample preparation device, which includes a first sample preparation machine 1, a second sample preparation machine 2, and a waste pipe assembly 3.

[0037] The first sample preparation machine 1 is used for primary crushing and reduction of the coal sample. Specifically, the first sample preparation machine 1 includes a first crusher and a first reduction machine (not shown in the figure) arranged in sequence. The first crusher is used for primary crushing of the coal sample, and the first reduction machine is located downstream of the first crusher to reduce the coal sample into three parts: one part is used for moisture detection, one part is conveyed to the second sample preparation machine 2 via conveyor belt 5, and the remaining coal sample waste enters the waste collection device 6 through the waste pipe assembly 3. Both the crusher and the reduction machine are existing technologies, therefore, the structure of the crusher and the reduction machine is not further limited in this embodiment.

[0038] The second sample preparation machine 2 is connected at a next process of the first sample preparation machine 1, and is used to receive the coal sample from the first sample preparation machine 1 and continue to perform secondary crushing and sub-sampling on the coal sample. Specifically, the second sample preparation machine 2 comprises a second crusher and a second sub-sampler (not shown in the figure) connected with each other, the second crusher is used to perform secondary crushing on the coal sample, and the second sub-sampler is used to sub-sample the coal sample into two parts: one part is used to continue the next process, and the remaining coal sample is discarded into the discard collecting device 6 through the discard pipe assembly 3.

[0039] The discard pipe assembly 3 is connected between the first sample preparation machine 1 and the discard collecting device 6, and between the second sample preparation machine 2 and the discard collecting device 6, and is used to discharge the discards in the first sample preparation machine 1 and the second sample preparation machine 2 to the discard collecting device 6.

[0040] The discard pipe assembly 3 comprises a first branch pipe 31, a second branch pipe 32 and a main pipe 33, wherein the feed inlet of the first branch pipe 31 is connected with the discard port of the first sample preparation machine 1, and the feed inlet of the second branch pipe 32 is connected with the discard port of the second sample preparation machine 2; the discharge outlets of the first branch pipe 31 and the second branch pipe 32 are both connected with one end of the main pipe 33, and the other end of the main pipe 33 is connected with the discard collecting device 6.

[0041] The discard pipe assembly (not shown in the figure) in the prior art usually connects the discharge outlet of the second branch pipe at a position close to the feed inlet of the first branch pipe, and this arrangement has the following problems: the small particle size coal sample discards in the second branch pipe enter the first branch pipe and mix with the large particle discards in the first branch pipe, so that the small particle discards are filled in the gaps between the large particle discards, and then cause the coal blockage of the first branch pipe.

[0042] However, the embodiment improves the discard pipe assembly in the prior art, and connects the discharge outlet of the second branch pipe 32 at the tail end discharge outlet of the first branch pipe 31, and sends the discards to the discard collecting device 6 by the main pipe 33. That is, the first branch pipe 31 and the second branch pipe 32 are arranged in parallel, and the discards in the second branch pipe 32 will not flow through the first branch pipe 31, so as to avoid the coal blockage of the first branch pipe 31.

[0043] In the embodiment, the diameter of the main pipe 33 is larger than the diameters of the first branch pipe 31 and the second branch pipe 32, so as to reduce the possibility of the coal blockage of the main pipe 33; in addition, the length of the main pipe 33 is relatively short, which reduces the flow path of the coal sample discards in the main pipe 33, and further reduces the risk of the coal blockage of the main pipe 33.

[0044] Optionally, the reject pipe assembly 3 further comprises a tee assembly having three openings in communication with each other, the outlet end of the first branch pipe 31, the outlet end of the second branch pipe 32 and the inlet end of the main pipe 33 are respectively connected to the three openings of the tee assembly. Preferably, the tee assembly is a tee valve or a tee pipe 34.

[0045] The tee pipe 34 is formed by the intersection connection of a first pipe segment, a second pipe segment and a third pipe segment, wherein the first pipe segment is connected to the first branch pipe 31, the second pipe segment is connected to the second branch pipe 32, and the third pipe segment is connected to the main pipe 33; preferably, the central axis of the first pipe segment and the central axis of the third pipe segment form a straight angle; the central axis of the second pipe segment and the central axis of the third pipe segment form an obtuse angle. In this way, the reject in the first branch pipe 31 and the second branch pipe 32 can smoothly enter the main pipe 33 through the tee pipe 34, avoiding coal blockage when the coal sample enters the main pipe 33.

[0046] The utility model embodiment further comprises a blast assembly 4 connected to the reject pipe assembly 3. The blast assembly 4 is used for blowing air to the reject pipe assembly 3 to dry the reject in the reject pipe assembly 3.

[0047] In the embodiment, the blast assembly 4 is connected to the reject pipe assembly 3, and the blast assembly 4 is used to blow air to the reject pipe assembly 3 to dry the reject in the reject pipe assembly 3, thereby reducing the humidity and viscosity of the coal sample in the reject pipe assembly 3, and avoiding coal blockage of the reject pipe assembly 3.

[0048] The air outlet of the blast assembly 4 is connected to the first branch pipe 31.

[0049] Since the humidity and viscosity of the coal sample in the first branch pipe 31 are higher than those of the coal sample in the second branch pipe 32, the air outlet of the blast assembly 4 is connected to the first branch pipe 31 in the embodiment to dry the reject in the first branch pipe 31, thereby reducing the humidity and viscosity of the coal sample in the first branch pipe 31 and avoiding coal blockage of the first branch pipe 31.

[0050] In the embodiment, the blast assembly 4 comprises a hot air blower 41 and a blast pipe 42, wherein one end of the blast pipe 42 is connected to the air outlet of the hot air blower 41, and the other end of the blast pipe 42 is connected to the inlet of the first branch pipe 31.

[0051] The first sample preparation machine 1 further comprises a reject hopper 11, the inlet of the reject hopper 11 is connected to the first branch machine, the outlet of the reject hopper 11 is connected to the inlet of the first branch pipe 31, and the reject hopper 11 is provided with a rotating blade. The rotating blade is used to scatter the coal sample with high viscosity, avoid the coal sample from blocking the inlet of the first branch pipe 31 and affecting the subsequent operation.

[0052] Preferably, a first transparent observation window 12 is arranged on the sidewall of the reject hopper 11, so as to facilitate the staff to observe whether the coal is blocked at the position of the reject hopper 11, and when the staff finds that the coal is blocked at the position, the staff can target to dredge or repair the position.

[0053] The second sample preparation machine 2 further comprises a drying machine 21, which is used for further drying the coal sample which is subjected to secondary crushing and secondary division by the second crusher and the second division machine, and the coal sample dried by the drying machine 21 is used for the next process, such as the process of tertiary crushing and tertiary division.

[0054] The drying machine 21 is provided with a second transparent observation window 22, so as to facilitate the staff to observe whether the coal is blocked at the position of the feeding belt of the drying machine 21.

[0055] Preferably, the particle size of the first crusher is 6mm-3mm, and the particle size of the second crusher is 3mm-1mm.

[0056] Preferably, a third transparent observation window 62 is arranged on the reject collecting belt 61 of the reject collecting device 6, so as to facilitate the staff to observe whether the coal is blocked at the position.

[0057] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A coal sample preparation device, characterized by comprising: The preparation machine comprises a first preparation machine, a second preparation machine connected with the first preparation machine, and The waste pipe assembly comprises a first branch pipe, a second branch pipe and a main pipe, the feeding port of the first branch pipe is connected with the first preparation machine, the feeding port of the second branch pipe is connected with the second preparation machine, the discharging port of the second branch pipe is located at the downstream side of the discharging port of the first branch pipe, and the discharging ports of the first branch pipe and the second branch pipe are both connected with the feeding end of the main pipe.

2. The coal sample preparation device according to claim 1, characterized in that, The waste pipe assembly further comprises: The three-way assembly has three openings in communication with each other, and the discharging end of the first branch pipe, the discharging end of the second branch pipe and the feeding end of the main pipe are all connected with the three openings of the three-way assembly one by one.

3. The coal sample preparation device according to claim 2, characterized in that, The three-way assembly is a three-way valve or a three-way pipe.

4. The coal sample preparation device according to claim 1, characterized by The air supply assembly is further provided, and the air outlet of the air supply assembly is connected with the first branch pipe.

5. The coal sample preparation device according to claim 4, characterized in that The air supply assembly comprises a hot air blower and an air supply pipe, one end of the air supply pipe is connected with the air outlet of the hot air blower, and the other end of the air supply pipe is connected at the feeding port of the first branch pipe.

6. The coal sample preparation device according to any one of claims 1 to 5, wherein, The first preparation machine comprises a first crusher, a first size-reducing machine and a waste hopper arranged in sequence. The feeding port of the waste hopper is connected with the first size-reducing machine, the discharging port is connected with the feeding port of the first branch pipe, and the waste hopper is provided with rotating blades.

7. The coal sample preparation device according to claim 6, characterized in that A transparent observation window is arranged on the side wall of the waste hopper.

8. The coal sample preparation device according to claim 6, characterized in that, The particle size of the first crusher is 6mm-3mm.

9. The coal sample preparation device according to any one of claims 1 to 4, wherein, The second preparation machine comprises a second crusher and a second size-reducing machine connected with each other, and A drying machine is arranged for drying the coal sample subjected to the secondary crushing and size-reducing by the second crusher and the second size-reducing machine, and the drying machine is provided with a transparent observation window.