Roller screen device for sample crushing pretreatment and crushing system

Abstract

The utility model discloses a roller screen device and crushing system for sample crushing pretreatment, which comprises a shell and a roller screen assembly arranged in the shell, the roller screen assembly at least comprises a rotating shaft and a roller driving assembly, the rotating shaft at least comprises a driving shaft and a driven shaft, a plurality of screen pieces are arranged on the driving shaft and the driven shaft, and the roller driving assembly is arranged on the shell. The driven shaft is connected with the driving shaft through the transmission assembly, the roller driving assembly is used for driving the driving shaft to rotate and driving the driven shaft to rotate synchronously through the transmission assembly, and the roller screen turnover mechanism is used for driving the roller screen assembly to turn over by a certain angle to achieve self-cleaning. The wet coal separating device can effectively separate wet coal, can reduce the abrasion risk of the crusher and the over-crushing problem, and can prevent the crusher from being blocked.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of material screening, in particular to a rolling screen device and a crushing system for sample crushing pre-processing. Background Art

[0002] The analysis of material (such as coal) samples requires sampling first. In order to ensure the normal operation of the back-end equipment in the sampling system, a crusher must be used to crush the coal sample to a specified particle size. In the prior art, a sieve plate is usually installed at the discharge port of the crusher to control the screening rate of the coal sample after crushing. However, when dealing with coal samples with a high water content, the wet and sticky coal samples are easy to agglomerate inside the crusher and adhere to the sieve plate, which will hinder the discharge of the coal sample. Over time, the attached coal powder continues to accumulate, resulting in a decrease in the effective discharge volume of the crusher and a decrease in production capacity. The accumulated coal samples are over-crushed, producing more fine powder, forming a vicious circle, aggravating the wear of the crusher, and may eventually cause the equipment to be blocked and stop working. In this case, the machine cannot recover automatically, and the inside of the crusher needs to be manually cleaned, which not only increases the difficulty of maintenance, but also the maintenance environment is very harsh. Frequent equipment failures also seriously affect the user experience. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the utility model provides a rolling screen device and a crushing system for sample crushing pre-processing, which can effectively separate wet coal, reduce the risk of crusher wear and over-crushing problems, and prevent crusher blockage.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A rolling screen device for sample crushing pre-processing comprises a shell and a rolling screen assembly installed in the shell, the rolling screen assembly comprises at least a rotating shaft and a roller drive assembly, the rotating shaft comprises at least a driving shaft and a driven shaft, a plurality of screen plates are arranged on the driving shaft and the driven shaft, the driven shaft is connected to the driving shaft through a transmission assembly, the roller drive assembly is used to drive the driving shaft to rotate, and drives the driven shaft to rotate synchronously through the transmission assembly, and also comprises a rolling screen flipping mechanism, the rolling screen flipping mechanism is used to drive the rolling screen assembly to flip a certain angle to achieve self-cleaning.

[0006] As a further improvement of the utility model: the shell includes a first shell and a second shell, a feed port is provided above the first shell, the rolling screen assembly is installed in the second shell, and the lower part of the second shell is used for docking with a distribution hopper.

[0007] As a further improvement of the present invention: a vibration component is also provided on the side wall of the first shell.

[0008] As a further improvement of the utility model: the rolling screen assembly is installed in the second shell through a mounting frame, the mounting frame includes a first mounting seat and a second mounting seat arranged relatively, a guide plate is provided at one end of the mounting frame close to the driving shaft, and a connecting seat is provided at the other end.

[0009] As a further improvement of the present invention: an anti-overflow plate is provided above the first mounting seat and the second mounting seat.

[0010] As a further improvement of the present invention: a limit vibration guide assembly is provided at one end of the anti-overflow plate close to the connecting seat.

[0011] As a further improvement of the present invention: the transmission assembly is installed in the first mounting seat or the second mounting seat through a sealing filler.

[0012] As a further improvement of the utility model: the transmission assembly includes a transmission sprocket and a chain or a transmission wheel and a belt.

[0013] As a further improvement of the utility model: the screen plates are staggeredly installed on adjacent rotating shafts.

[0014] As a further improvement of the present invention: the gap between adjacent screen plates is adjustable.

[0015] As a further improvement of the utility model: a cleaning assembly is provided below the rolling screen assembly, and the cleaning assembly comprises a mounting base, on which a plurality of cleaning convex teeth are arranged at intervals.

[0016] As a further improvement of the present invention: the rolling screen flipping mechanism comprises a flipping drive assembly and a flipping connecting piece, and the flipping drive assembly drives the flipping connecting piece to rotate and then drives the rolling screen assembly to flip.

[0017] The utility model also discloses a crushing system, including a distribution hopper, a crushing device and the rolling screen device as described above, wherein the rolling screen device is arranged above the feed end of the distribution hopper, the distribution hopper includes a fine material channel and a coarse material channel, the rotating shaft of the rolling screen assembly rotates under the action of a roller driving assembly to screen samples, samples with smaller particle sizes fall into the fine material channel through the gaps between the screen plates, and samples with larger particle sizes are transmitted to the coarse material channel by the rotating shaft, and the crushing device is arranged in the coarse material channel to crush samples with larger particle sizes.

[0018] As a further improvement of the utility model: a sample transmission mechanism is also provided below the distribution hopper.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] 1. The utility model discloses a roller screen device for sample crushing pre-processing, which is provided with a roller screen assembly. The roller screen assembly can realize effective separation of samples of different particle sizes, so that a large amount of fine coal powder with high water content and strong viscosity is prevented from entering the crusher, which can provide a more suitable working environment for the movement of the crusher and greatly reduce the processing burden of subsequent equipment. Since most of the wet coal powder that may cause blockage and increase wear is pre-screened out, the wear risk of the crusher and the risk of coal blockage can be greatly reduced, the continuity and reliability of equipment operation are improved, the service life of the equipment can be effectively extended, and the problem of excessive crushing of coal samples due to repeated crushing can be reduced; the device is also provided with a roller screen flipping mechanism. After the operation is completed, the roller screen flipping mechanism can drive the roller screen assembly to flip to a certain angle to achieve self-cleaning, which greatly reduces the possibility of material mixing and contamination, and can also reduce the number of shutdowns for maintenance.

[0021] 2. The crushing system of the utility model is provided with a roller screen device, which is arranged above the feed end of the distribution hopper. The distribution hopper includes a fine material channel and a coarse material channel. The rotating shaft of the roller screen assembly rotates under the action of the driving assembly to screen the samples. The samples with smaller particle sizes fall into the fine material channel through the gaps between the screen plates, and the samples with larger particle sizes will be transmitted to the coarse material channel by the rotating shaft; and then the samples with larger particle sizes are crushed by the crushing device arranged in the coarse material channel; the system can achieve high automation, and can automatically complete the process from feeding, sorting, crushing to material transportation, and can achieve pre-processing of samples through the roller screen device, especially for fine coal powder with high water content and strong viscosity, which can effectively prevent it from entering the crusher, and can greatly reduce the risk of coal blockage in the crushing system, and reduce the problems of crusher wear and excessive crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of the rolling screen device in the first specific embodiment of the present utility model.

[0023] Figure 2 It is a three-dimensional structural diagram of the rolling screen device of the utility model when the first shell is removed in the specific embodiment 1.

[0024] Figure 3 It is a three-dimensional structural diagram of the rolling screen assembly in the first specific embodiment of the present utility model.

[0025] Figure 4 It is a three-dimensional structural diagram of the rolling screen assembly of the utility model in another perspective in the specific embodiment 1.

[0026] Figure 5 It is a cross-sectional view of the rolling screen assembly of the utility model in the specific embodiment 1.

[0027] Figure 6It is a cross-sectional view of the rolling screen assembly of the utility model in the first specific embodiment from another perspective.

[0028] Figure 7 It is a top view of the roller screen assembly in the first specific embodiment of the present invention.

[0029] Figure 8 This is a state diagram of the crushing system of the utility model when it is working in the specific embodiment 2.

[0030] Fig. 9 This is a state diagram of the crushing system of the utility model when automatically cleaning in the second specific embodiment.

[0031] Legend:

[0032] 1. Shell; 11. First shell; 111. Feed inlet; 12. Second shell; 2. Roller screen assembly; 21. Rotating shaft; 211. Driving shaft; 212. Driven shaft; 22. Roller drive assembly; 23. First mounting seat; 231. Drive tube seat; 24. Second mounting seat; 241. Flip tube seat; 25. Guide plate; 26. Connecting seat; 27. Anti-overflow plate; 3. Screen; 4. Transmission assembly; 5. Roller screen flipping mechanism; 51. Flipping drive assembly; 52. Flipping connector; 6. Vibration assembly; 7. Limiting vibration guide assembly; 8. Sealing filler; 9. Cleaning assembly; 91. Mounting base; 92. Cleaning cam; 100. Distribution hopper; 1001. Fine material channel; 1002. Coarse material channel; 101. Crushing device; 102. Sample transmission mechanism. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Embodiment 1

[0035] like Figures 1 to 7 As shown, this embodiment discloses a rolling screen device for sample crushing pre-processing, including a shell 1 and a rolling screen assembly 2 installed in the shell 1, the rolling screen assembly 2 at least includes a rotating shaft 21 and a roller drive assembly 22, the rotating shaft 21 at least includes a driving shaft 211 and a driven shaft 212, a plurality of screen plates 3 are arranged on the driving shaft 211 and the driven shaft 212, the driven shaft 212 is connected to the driving shaft 211 through a transmission assembly 4, the roller drive assembly 22 is used to drive the driving shaft 211 to rotate, and drive the driven shaft 212 to rotate synchronously through the transmission assembly 4, and also includes a rolling screen flipping mechanism 5, the rolling screen flipping mechanism 5 is used to drive the rolling screen assembly 2 to flip a certain angle to achieve self-cleaning.

[0036] The roller screen device for sample pre-crushing treatment of the present embodiment is provided with a roller screen assembly 2, through which samples of different particle sizes can be effectively separated, so that a large amount of fine coal powder with high water content and strong viscosity is prevented from entering the crusher, which can provide a more suitable working environment for the movement of the crusher and greatly reduce the processing burden of subsequent equipment. Since most of the wet coal powder that may cause blockage and increase wear is pre-screened out, the wear risk of the crusher and the risk of coal blockage can be greatly reduced, the continuity and reliability of equipment operation are improved, the service life of the equipment can be effectively extended, and the problem of excessive crushing of coal samples due to repeated crushing can be reduced; the device is also provided with a roller screen flipping mechanism 5. After the operation is completed, the roller screen flipping mechanism 5 can drive the roller screen assembly 2 to flip to a certain angle to achieve self-cleaning, which greatly reduces the possibility of material mixing and contamination, and can also reduce the number of shutdowns for maintenance.

[0037] In this embodiment, the roller drive assembly 22 is connected to the reduction motor, and frequency control can be achieved through the reduction motor. The rotation speed of the rotating shaft 21 can be adjusted according to the production capacity of the front-end link to match it. It also has forward and reverse rotation functions. The production capacity can be improved by forward rotation, and the screening capacity can be improved by reverse rotation. Alternating forward and reverse rotation can effectively improve the processing capacity of the equipment.

[0038] In this embodiment, the housing 1 includes a first housing 11 and a second housing 12. A feed port 111 is provided above the first housing 11. The roller screen assembly 2 is installed in the second housing 12. The lower part of the second housing 12 is used to dock the feed hopper 100. The first housing 11 and the second housing 12 are combined to form a cavity for accommodating the roller screen assembly 2 and play a sealing role.

[0039] In this embodiment, the rolling screen assembly 2 is installed in the second shell body 12 through an installation frame, and the installation frame includes a first installation seat 23 and a second installation seat 24 arranged relatively to each other. A driving pipe seat (231) is installed on the side wall of the first installation seat 23 for docking with the roller driving assembly 22. The end of the driving pipe seat is provided with a mounting seat for mounting the roller driving assembly 22, and the driving shaft 211 passes through the driving pipe seat and is connected to the roller driving assembly 22; a flipping pipe seat (241) is installed on the side wall of the second installation seat 24 for docking with the rolling screen flipping mechanism 5, and the rolling screen flipping mechanism 5 includes a flipping driving assembly 51 and a flip connecting member 52. One end of the flip connecting member 52 is connected to the flipping pipe seat, and the other end is connected to the flip driving assembly 51. The flip driving assembly 51 drives the flip connecting member 52 to rotate and then drives the rolling screen assembly 2 to flip.

[0040] In this embodiment, a guide plate 25 is provided at one end of the mounting frame near the driving shaft 211, and a connecting seat 26 is provided at the other end. After screening, samples with larger particle sizes enter the coarse material channel 1002 of the hopper 100 through the guide plate 25, and enter the crushing device 101 for crushing.

[0041] In this embodiment, an anti-overflow plate 27 is provided above the first mounting seat 23 and the second mounting seat 24 , and the anti-overflow plate 27 can effectively prevent the coal sample from being ejected during the screening process.

[0042] In this embodiment, a limit vibration guide assembly 7 is provided at one end of the anti-overflow plate 27 close to the connecting seat 26. The limit vibration guide assembly 7 can limit the turning angle of the rolling screen assembly 2.

[0043] In this embodiment, a vibration assembly 6 is further provided on the side wall of the first housing 11. When the rolling screen assembly 2 completes the screening work, the rolling screen flipping mechanism 5 drives the rolling screen assembly 2 to rotate, and when the limit vibration guide assembly 7 contacts the inner wall of the first housing 11, the vibration assembly 6 is started, and the vibration force is transmitted to the rolling screen assembly 2 through the limit vibration guide assembly 7, thereby vibrating the coal sample remaining on the anti-overflow plate 27 and the side wall of the mounting seat down.

[0044] In this embodiment, the transmission component 4 is installed in the first mounting seat 23 or the second mounting seat 24 through a sealing filler 8 (such as a packing seal); the sealing filler 8 can isolate the harsh working environment and reduce the impact of the sample on the transmission component 4.

[0045] In this embodiment, the transmission assembly 4 includes a transmission sprocket and a chain; in other embodiments, the transmission assembly 4 may also be a transmission wheel and a belt.

[0046] In this embodiment, the screen pieces 3 are staggered on adjacent rotating shafts 21. The screen pieces 3 are staggered on adjacent rotating shafts 21 to achieve the function of shifting the coal sample and improving the screening capacity. Further, in a preferred embodiment, the gap between adjacent screen pieces 3 is adjustable, and the maximum particle size of the fine material screened is controlled by the width of the screen pieces 3.

[0047] In this embodiment, a cleaning assembly 9 is provided below the roller screen assembly 2, and the cleaning assembly 9 includes a mounting base 91, and a plurality of cleaning protruding teeth 92 are arranged at intervals on the mounting base 91. The cleaning protruding teeth 92 can effectively clean the coal sample adhering to the rotating shaft 21 and the screen plate 3, thereby realizing automatic cleaning of the roller screen assembly 2.

[0048] Embodiment 2

[0049] like Figure 8 and Fig. 9As shown, this embodiment discloses a crushing system, including a distribution hopper 100, a crushing device 101 and a rolling screen device as described in Example 1, the rolling screen device is arranged above the feed end of the distribution hopper 100, the distribution hopper 100 includes a fine material channel 1001 and a coarse material channel 1002, the rotating shaft 21 of the rolling screen assembly 2 rotates under the action of the roller drive assembly 22 to screen the sample, the sample with smaller particle size falls into the fine material channel 1001 through the gaps between the various screen plates 3, and the sample with larger particle size will be transmitted to the coarse material channel 1002 by the rotating shaft 21, the crushing device 101 is arranged in the coarse material channel 1002, and is used to crush the sample with larger particle size; a sample transmission mechanism 102 is also provided below the distribution hopper 100.

[0050] In this embodiment, the roller screen assembly 2 is arranged in an inclined manner, and the rotating screen plate 3 is used to effectively separate the fine material and the coarse material in the coal sample.

[0051] The feed port 111 in this embodiment can be connected to a belt conveyor to realize automatic feeding, or manual feeding can be adopted to increase the flexibility of the system.

[0052] Working principle: samples enter from the feed port 111 through a belt conveyor or manual feeding, the rolling screen assembly 2 performs preliminary separation on the samples, and the dividing hopper 100 arranged below the rolling screen device receives the screened samples. Samples with smaller particle sizes fall into the fine material channel 1001 through the gaps between the screen plates 3, and samples with larger particle sizes are transmitted to the coarse material channel 1002 by the rotating shaft 21. The crushing device 101 arranged in the coarse material channel 1002 receives the coarse material after screening, crushes it to the required particle size, and then discharges it to the reduction belt conveyor to be mixed with the fine material and enter the subsequent reduction link; after processing all samples, the rolling screen flipping mechanism 5 is started to flip the rolling screen assembly 2 to a certain angle. At the same time, the vibration assembly 6 works, and combined with the continuously rotating rotating shaft 21, the samples remaining on the rolling screen assembly 2 are vibrated into the dividing hopper 100 to achieve automatic cleaning.

[0053] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A rolling screen device for sample crushing pre-treatment, characterized in that: The invention comprises a housing (1) and a rolling screen assembly (2) installed in the housing (1), wherein the rolling screen assembly (2) comprises at least a rotating shaft (21) and a roller drive assembly (22), wherein the rotating shaft (21) comprises at least a driving shaft (211) and a driven shaft (212), wherein a plurality of screen plates (3) are provided on the driving shaft (211) and the driven shaft (212), wherein the driven shaft (212) is connected to the driving shaft (211) via a transmission assembly (4), wherein the roller drive assembly (22) is used to drive the driving shaft (211) to rotate, and drives the driven shaft (212) to rotate synchronously via the transmission assembly (4), and further comprises a rolling screen flipping mechanism (5), wherein the rolling screen flipping mechanism (5) is used to drive the rolling screen assembly (2) to flip to a certain angle to achieve self-cleaning.

2. The rolling screen device for sample crushing pre-treatment according to claim 1 is characterized in that: The shell (1) comprises a first shell (11) and a second shell (12); a feed port (111) is provided on the top of the first shell (11); the roller screen assembly (2) is installed in the second shell (12); and the lower part of the second shell (12) is used for docking with a distribution hopper (100).

3. The rolling screen device for sample crushing pre-treatment according to claim 2, characterized in that: A vibration component (6) is also provided on the side wall of the first shell (11).

4. The rolling screen device for sample crushing pre-treatment according to claim 2, characterized in that: The roller screen assembly (2) is installed in the second housing (12) via a mounting frame, the mounting frame comprising a first mounting seat (23) and a second mounting seat (24) arranged opposite to each other, a guide plate (25) being provided at one end of the mounting frame which is installed close to the driving shaft (211), and a connecting seat (26) being provided at the other end.

5. The rolling screen device for sample crushing pre-treatment according to claim 4, characterized in that: An anti-overflow plate (27) is provided above the first mounting seat (23) and the second mounting seat (24).

6. The rolling screen device for sample crushing pre-treatment according to claim 5, characterized in that: A position limiting vibration guide assembly (7) is provided at one end of the anti-overflow plate (27) close to the connecting seat (26).

7. The rolling screen device for sample crushing pre-treatment according to claim 5, characterized in that: The transmission assembly (4) is installed in the first mounting seat (23) or the second mounting seat (24) via a sealing filler (8).

8. The rolling screen device for sample crushing pre-treatment according to any one of claims 1 to 7, characterized in that: The transmission assembly (4) comprises a transmission sprocket and a chain or a transmission wheel and a belt.

9. The rolling screen device for sample crushing pre-treatment according to any one of claims 1 to 7, characterized in that: The screen plates (3) are installed in a staggered manner on adjacent rotating shafts (21).

10. The rolling screen device for sample crushing pre-treatment according to claim 9, characterized in that: The gap between adjacent screen plates (3) is adjustable.

11. The rolling screen device for sample crushing pre-treatment according to any one of claims 1 to 7, characterized in that: A cleaning assembly (9) is provided below the rolling screen assembly (2), and the cleaning assembly (9) comprises a mounting base (91), on which a plurality of cleaning protruding teeth (92) are arranged at intervals.

12. The rolling screen device for sample crushing pre-treatment according to any one of claims 1 to 7, characterized in that: The rolling screen flipping mechanism (5) comprises a flipping drive assembly (51) and a flipping connection member (52), wherein the flipping drive assembly (51) drives the flipping connection member (52) to rotate and thereby drives the rolling screen assembly (2) to flip.

13. A crushing system, characterized in that: It comprises a distribution hopper (100), a crushing device (101) and a rolling screen device as claimed in any one of claims 1 to 12, wherein the rolling screen device is arranged above the feed end of the distribution hopper (100), the distribution hopper (100) comprises a fine material channel (1001) and a coarse material channel (1002), the rotating shaft (21) of the rolling screen assembly (2) rotates under the action of a roller driving assembly (22) to screen the sample, and the sample with a smaller particle size falls into the fine material channel (1001) through the gaps between the sieve plates (3), and the sample with a larger particle size is transmitted to the coarse material channel (1002) by the rotating shaft (21), and the crushing device (101) is arranged in the coarse material channel (1002) to crush the sample with a larger particle size.

14. The crushing system according to claim 13, characterized in that: A sample transmission mechanism (102) is also provided below the distribution hopper (100).

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