Raw coal impurity removing and screening mechanism
By combining grate screening and rotary roller hook-claw screening units with intermittent transmission, the problem of blockage in coal mine impurity removal mechanisms has been solved, achieving efficient screening of large impurities and improving production efficiency and safety.
Patent Information
- Application Number
- CN202423239021.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing coal mine impurity removal mechanisms are prone to blockage due to large debris during the screening process, affecting normal operation, leading to production interruptions, equipment wear and tear, and increased safety risks.
The system employs a grate screening unit and a rotary roller hook-claw screening unit combined with an intermittent drive unit. The grate screening unit screens small coal lumps, while the rotary roller hook-claw screening unit screens large debris. The intermittent drive unit drives the hooks to rotate and throw the debris into the recycling bin.
It effectively reduces blockages, improves production efficiency, reduces equipment wear and energy consumption, ensures production continuity, and reduces safety risks.
Smart Images
Figure CN223683979U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to coal mine impurity removal equipment technical field, concretely relates to a raw coal impurity removal screening mechanism. BACKGROUND
[0002] In the production and transportation process of coal mine, the large-size impurities existing in raw coal need to be screened out to prevent the blocking phenomenon of the mechanism caused by the large size of the impurities, and the blocking phenomenon will have negative effects on the normal operation of the coal mine impurity removal mechanism and the production of coal mine, for example, once the blocking phenomenon occurs, the coal mine impurity removal mechanism often needs to be stopped for cleaning, which will cause the interruption of production and reduce the production efficiency; at the same time, the long-time blocking phenomenon of the coal mine impurity removal mechanism will aggravate the wear of the internal related structure components, and even cause the damage of the screen mesh, the conveying belt and other components, thereby increasing the maintenance cost; finally, the blocking phenomenon may cause the problems of overload and overheating of the mechanism, thereby increasing the risk of safety accidents.
[0003] Therefore, the utility model provides a raw coal impurity removal screening mechanism. UTILITY MODEL CONTENTS
[0004] The utility model discloses a raw coal impurity removal screening mechanism, which can screen out large-size impurities mixed in raw coal and reduce the occurrence of the blocking phenomenon of the mechanism.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A raw coal impurity removal screening mechanism, comprising a base, a grate type screening unit, a rotary roller hook claw type screening unit and an intermittent transmission unit.
[0007] The base is provided with an opening, and the grate type screening unit and the rotary roller hook claw type screening unit are arranged at the opening, wherein the rotary roller hook claw type screening unit is arranged at the middle position of the base, and the grate type screening unit is arranged at one side of the rotary roller hook claw type screening unit.
[0008] The grate type screening unit comprises a cylinder, a square tube, a driving block and a swing rod.
[0009] The square tube is arranged horizontally, both ends of the square tube are provided with rotating shafts, each rotating shaft is connected with a first bearing seat through a bearing, and the first bearing seat is connected with the base.
[0010] There are two driving blocks, and each driving block is connected to one end of the square tube.
[0011] There are two cylinders, and each cylinder is arranged on the base; the output shaft of each cylinder is connected with a driving block; a plurality of swing rods arranged at equal intervals are arranged on the square tube, and the plurality of swing rods are arranged in parallel with each other.
[0012] The hook claw type screening unit comprises a roller shaft and a hook claw, both ends of the roller shaft are connected with second bearing seats through bearings, and the second bearing seats are arranged on a base;
[0013] A plurality of groups of hook claws are arranged on the roller shaft; every three hook claws form a group, the three hook claws in the same group are in the same plane, and the interval angle between the hook claws in the same group is 120°; the single hook claws of the groups of hook claws correspond to each other in position and integrally form three rows of groups of hook claws arranged along the axial direction of the roller shaft.
[0014] The intermittent transmission unit is used for driving the intermittent rotation of the roller shaft.
[0015] Preferably, the intermittent transmission unit comprises a speed reducer and a cam divider.
[0016] The speed reducer is arranged on the base, the speed reducer is connected with the cam divider, and the cam divider is connected with the roller shaft.
[0017] Preferably, a spacing sleeve is arranged between the two adjacent groups of hook claws.
[0018] Preferably, a plurality of stoppers are arranged on the square tube, and one stopper is arranged on each side of the end portion of each swing rod.
[0019] Preferably, the outer contour of the stopper is in the shape of a semicircular arc.
[0020] Preferably, the swing rod is arranged in a spaced manner with the hook claw.
[0021] Preferably, a material bin is arranged directly below the swing rod.
[0022] Preferably, a protective shell is arranged on the top of the base.
[0023] The beneficial effects of the utility model are as follows:
[0024] The utility model provides a raw coal impurity removal and screening mechanism, through setting up grating type screening unit, make the coal block of smaller volume can smoothly pass the clearance between swing lever and fall into the bin below, and the volume larger impurities are temporarily intercepted on swing lever, wait for subsequent by rotary roller hook and claw formula screening unit hook and carry out spin and throw and remove the impurity treatment, simultaneously, through setting up oil cylinder drive swing lever and carry out certain amplitude swing, can prevent the coal block from being stuck in the clearance of swing lever, can also provide favorable conditions for subsequent spin and throw process, the utility model discloses rotary roller hook and claw formula screening unit, utilizes intermittent drive unit (namely reduction motor and cam divider cooperation) and provides power, sets up a plurality of groups of hook and claw on the roller shaft of rotary roller hook and claw formula screening unit, and each group of hook and claw is composed of three hook and claw that are interval 120 degrees angle, intermittently drives the hook and claw rotation of rotary roller hook and claw formula screening unit, can spin and throw the large impurities intercepted on swing lever into the recovery box set up in the other end of base, waits for subsequent unified processing,
[0025] The raw coal impurity removal and screening mechanism can screen out large impurities, reduces the probability of blockage, effectively reduces production stop caused by equipment blockage failure, improves production efficiency, reduces energy consumption, and achieves the purpose of reducing consumption and increasing efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is the perspective view of the utility model;
[0027] Figure 2 It is the plan view of the utility model;
[0028] Figure 3 It is the assembly of grating type screening unit and rotary roller hook and claw formula screening unit of the utility model Figure 1 ;
[0029] Figure 4 It is the assembly of grating type screening unit and rotary roller hook and claw formula screening unit of the utility model Figure 2 ;
[0030] Figure 5 It is the structure schematic of grating type screening unit of the utility model Figure 1 ;
[0031] Figure 6 It is the structure schematic of grating type screening unit of the utility model Figure 2 ;
[0032] Figure 7 It is the structure schematic of rotary roller hook and claw formula screening unit of the utility model Figure 1 ;
[0033] Figure 8The utility model discloses a structure diagram of hook and claw type screening unit of rotary roller Figure 2 ;
[0034] Among them, 1 - base, 2 - protective shell,
[0035] 3 - grate type screening unit: 31 - square tube, 32 - first bearing seat, 33 - drive block, 34 - swing rod, 35 - stop block,
[0036] Intermittent transmission unit: 41 - speed reducer motor, 42 - cam divider,
[0037] 4 - hook and claw type screening unit of rotary roller: 43 - roller shaft, 44 - second bearing seat, 45 - hook and claw, 46 - spacer sleeve. DETAILED DESCRIPTION
[0038] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0039] In the utility model, unless another explicit provision and limitation, the terms "connect", "fix" and the like should be understood broadly, for example, "fix" can be fixed connection, also can be detachable connection, or integral, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements or the interaction of two elements, unless another explicit limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0040] Combining Figures 1 to 8 As shown in the utility model discloses a kind of raw coal impurity screening mechanism, the raw coal impurity screening mechanism can screen out large-sized sundries of larger volume, and they are spun into recycling box and wait subsequent unified processing, to effectively reduce the occurrence of jamming phenomenon, indirectly improve production efficiency.The raw coal impurity screening mechanism mainly includes base 1, protective shell 2, grate type screening unit 3, hook and claw type screening unit 4 and intermittent transmission unit.
[0041] Combining Figure 1 And Figure 2 As shown in the utility model discloses a kind of raw coal impurity screening mechanism, the raw coal impurity screening mechanism can screen out large-sized sundries of larger volume, and they are spun into recycling box and wait subsequent unified processing, to effectively reduce the occurrence of jamming phenomenon, indirectly improve production efficiency.The raw coal impurity screening mechanism mainly includes base 1, protective shell 2, grate type screening unit 3, hook and claw type screening unit 4 and intermittent transmission unit.
[0042] CombiningFigure 5 and Figure 6 As shown, the square tube 31 is arranged horizontally, with rotating shafts at both ends. Each rotating shaft is connected to a first bearing seat 32 via a bearing, and the first bearing seat 32 is connected to the base 1. There are two drive blocks 33, each connected to one end of the square tube 31. There are two hydraulic cylinders (not shown in the figure), both mounted on the base 1. The output shaft of each hydraulic cylinder is connected to a drive block 33, providing power to rotate the drive block 33, which in turn rotates the square tube 31. Multiple parallel swing rods 34 are also mounted on the square tube 31, spaced evenly. Smaller coal pieces can fall through the gaps between adjacent swing rods 34. A hopper is located directly below each swing rod 34, capable of holding smaller coal pieces. Larger debris is temporarily trapped on the swing rods 34, awaiting removal by the subsequent rotary roller and claw screening unit 4.
[0043] In addition, when coal or debris gets stuck in the gap of the swing rod 34 due to impact or its own gravity, the hydraulic cylinder provides power to drive the square tube 31 to rotate. The swing rod 34 on the square tube 31 will also rotate. The swing amplitude and frequency can be controlled and adjusted by the hydraulic cylinder, so that the coal can be separated from the swing rod 34, ensuring the smooth progress of the subsequent spinning and throwing process.
[0044] Combination Figure 5 and Figure 6 As shown, the square tube 31 is also equipped with multiple stops 35. Each swing rod 34 has a stop 35 on both sides of its end. The stops 35 prevent debris from rolling back to the position between the base 1 and the upper-level transmission belt (not shown) when the swing rod 34 is raised, thus preventing wear on the transmission belt and damage to the equipment. Simultaneously, the outer contour of the stop 35 is semi-circular. When coal blocks roll freely from the upper-level transmission belt, the arc of the stop 35 is tangent to the direction of the coal block's fall, allowing the coal block or debris to land more smoothly on the swing rod 34.
[0045] Combination Figures 1 to 4 As shown, a rotary roller hook-claw type screening unit 4 is provided in the middle position of the base 1. The rotary roller hook-claw type screening unit 4 mainly includes a roller shaft 43, a second bearing seat 44, hooks 45 and a spacer sleeve 46.
[0046] In addition, the rotary roller hook-claw screening unit is also equipped with an intermittent transmission unit for driving the rotary roller hook-claw screening unit to rotate. The intermittent transmission unit includes a geared motor 41 and a cam divider 42.
[0047] Combination Figure 7 and Figure 8As shown, the reduction motor 41 is arranged on the base 1, the reduction motor 41 is connected with the cam divider 42, the cam divider 42 is connected with the roller shaft 43, and is used to drive the roller shaft 43 to realize intermittent rotation. The two ends of the roller shaft 43 are connected with the second bearing seat 44 through bearings, and the second bearing seat 44 is arranged on the base 1.
[0048] In combination Figure 7 As shown, a plurality of groups of hook claws 45 are arranged on the roller shaft 43, wherein every three hook claws 45 form a group, the three hook claws 45 in the same group are in the same plane, and the interval angle between the hook claws 45 in the same group is 120°. A spacing sleeve 46 is arranged between the two adjacent groups of hook claws 45, which is used to effectively separate the hook claws 45. The single hook claws 45 of each group of hook claws correspond one by one in position, and form three rows of groups of hook claws arranged in the axial direction of the roller shaft 43.
[0049] In combination Figure 3 And Figure 4 As shown, the swing rod 34 is arranged in a spaced manner with the hook claws 45, and when the hook claws 45 rotate, the swing rod 34 will not interfere with the swing rod 34, ensuring the smooth progress of the spinning process.
[0050] When the large-volume sundries are intercepted on the swing rod 34, the reduction motor 41 is powered on, the intermittent rotation of the roller shaft 43 is realized through the cam divider 42, so that the hook claws 45 arranged on the roller shaft 43 complete the spinning of the large sundries every 120° of rotation, that is, every time the hook claws 45 group completes the process of hooking and spinning the sundries above the swing rod 34, and at the same time, it can also prevent the sundries from being thrown out by the hook claws 45 before they are completely positioned, and the whole spinning process is more controllable.
[0051] In combination Figure 1 And Figure 2 As shown, the top of the base 1 is provided with a protective shell 2, which can prevent sundries from flying out during the spinning process and protect the health and safety of workers.
[0052] In combination Figures 1 to 8As shown, the raw coal impurity removal and screening mechanism is provided with the grate type screening unit 3, so that the coal blocks with small volume can smoothly fall into the lower bunker through the gap between the swing rods 34, and the impurities with large volume are temporarily intercepted on the swing rods 34, waiting for subsequent rotary throwing treatment by the rotary roller hook claw type screening unit 4; meanwhile, the swing rods 34 are driven to swing by a certain amplitude through the oil cylinder, so that the coal blocks or impurities can be prevented from being stuck in the gap of the swing rods 34, and meanwhile, favorable conditions can be provided for subsequent rotary throwing and impurity removal operation; the raw coal impurity removal and screening mechanism is further provided with the rotary roller hook claw type screening unit 4, power is provided by the intermittent transmission unit, the hook claws 45 are intermittently driven to rotate, the large impurities intercepted on the swing rods 34 can be rotary thrown into the recovery box arranged at the other end of the base 1, and waiting for subsequent unified treatment.
[0053] Of course, the above only for the preferred embodiments of the utility model, not therefore limit the patent range of the utility model, all in the utility model of the utility model concept, use the utility model specification and the equivalent structure transformation of the drawing contents are made, or direct / indirectly applied in other related technical fields are included in the patent protection range of the utility model, should be protected by the utility model.
Claims
1. A raw coal impurity removal and screening mechanism, characterized in that, The base, the grate screening unit, the rotary roller hook claw type screening unit and the intermittent transmission unit are included. The base is provided with an opening, and the grate screening unit and the rotary roller hook claw type screening unit are arranged at the opening. The grate screening unit includes a cylinder, a square tube, a driving block and a swing rod. The square tube is horizontally arranged, and both ends of the square tube are provided with rotating shafts, and each rotating shaft is connected with a first bearing seat through a bearing. Each driving block is connected to one end of the square tube. The cylinder has two output shafts, and each output shaft is connected with a driving block. The rotary roller hook claw type screening unit includes a roller shaft and a hook claw. The roller shaft is connected with a second bearing seat through a bearing at both ends. The roller shaft is provided with multiple groups of hook claws.
2. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, Each group of hook claws is arranged in the same plane, and the interval angle between the hook claws in the same group is 120°. The intermittent transmission unit includes a speed reducer and a cam divider.
3. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, The speed reducer is arranged on the base, and the speed reducer is connected with the cam divider.
4. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, The cam divider is connected with the roller shaft.
5. The raw coal impurity removing and screening mechanism according to claim 4, characterized in that, The interval sleeve is arranged between the adjacent two groups of hook claws.
6. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, The square tube is provided with multiple stop blocks.
7. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, The outer contour of the stop block is semicircular.
8. The raw coal impurity removing and screening mechanism according to claim 1, characterized in that, The swing rod is arranged between the hook claws. The swing rod is arranged below the hook claws. The top of the base is provided with a protective shell. The top of the base is provided with a protective shell.