Coal mine crushing equipment with screening function

Abstract

The invention discloses coal mine crushing equipment with a screening function, and belongs to the technical field of coal mine crushing. Two sets of telescopic screening net assemblies rotating relative to each other are installed in the equipment box body. A lifting driving mechanism is installed on the rear side of the equipment box and can drive the opposite ends of the two telescopic screening net assemblies to ascend or descend at the same time. The two sides of the two sets of telescopic screening net assemblies are each rotationally provided with a side turning base, and the side turning bases are located in a smashing chamber formed in the equipment box. An air cylinder is installed at the bottom outside the smashing chamber and connected with an air bag located at the bottom of the side-turning base in a sealed mode, and the air bag can drive the side-turning base to turn over towards the position where the telescopic screening net assembly is located after being inflated. According to the equipment, the telescopic screening net assembly controlled in a lifting mode and the side turning base controlled in an overturning mode are combined, coal can be repeatedly screened and smashed, all the coal finally meets the screening requirement, and the coal smashing precision of the equipment is higher.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine crushing, in particular to a coal mine crushing equipment with a screening function. Background Art

[0002] In the process of coal mining, coal often needs to be crushed and screened to meet the needs of subsequent use. Among them, coal mining crushing equipment is equipment that crushes coal blocks, and its process is the process of coal being crushed and its volume continuously reduced.

[0003] The above-mentioned coal processing is divided into two parts: one is coal crushing; the other is coal screening. At present, the coal processing process is mainly one-way, that is, coal must be crushed first and then screened, and the reverse transportation from screening to crushing can no longer be realized. In this way, not all the crushed coal may pass through the screen. Usually, 15-25% of the coal cannot pass through the screen and will be discharged. Then the qualified rate of coal passing the screen is only 75-85%, resulting in low precision of coal crushing. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a coal mine crushing equipment with a screening function. The equipment combines a telescopic screening net assembly controlled by lifting and lowering with a side tipping seat controlled by flipping, and can repeatedly screen and crush the coal, so that all the coal finally meets the screening requirements, that is, the qualified rate of coal passing through the net reaches 100%, and the accuracy of crushing the coal is higher.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A coal mine crushing device with screening function comprises a device box, a material inlet is provided on the top of the device box, and material outlets are provided at the bottoms of the left and right sides of the device box respectively;

[0007] Two sets of telescopic screening net assemblies are installed inside the equipment box, and the two sets of telescopic screening net assemblies are rotatably installed and symmetrical about the middle of the equipment box; a lifting drive mechanism is installed on the rear side of the equipment box, and the lifting drive mechanism can drive the opposite ends of the two sets of telescopic screening net assemblies to rise or fall at the same time;

[0008] A side rollover seat is rotatably installed on both sides of the two sets of telescopic screening net assemblies, and the side rollover seat is located in a crushing chamber opened in the equipment box; a cylinder is installed at the bottom outside the crushing chamber, and the cylinder is sealed with an air bag located at the bottom of the side rollover seat. After the air bag is inflated, it can drive the side rollover seat to flip toward the location of the telescopic screening net assembly.

[0009] By adopting the above scheme, the equipment combines the telescopic screening net assembly controlled by lifting and lowering with the side tipping seat controlled by flipping, which can repeatedly screen and crush the coal, so that all the coal finally meets the screening requirements, that is, the qualified rate of coal passing through the net reaches 100%, and the accuracy of coal crushing is higher.

[0010] As a preferred embodiment of a coal mine crushing device with screening function, the telescopic screening mesh assembly includes a screening mesh seat 1 and a screening mesh seat 2; wherein the screening mesh seat 1 is rotatably mounted with another screening mesh seat 1 through a flip shaft, wherein the screening mesh seat 2 is rotatably mounted with a side flip seat through flipping;

[0011] Screens are installed on both the first and second screening mesh seats; a slide groove is provided at the edge of the first screening mesh seat, and a slide rod is fixed at the edge of the second screening mesh seat, and the slide rod is always slidably installed in the slide groove.

[0012] By adopting the above scheme, in order to improve the flexibility of the screening mesh seat, a screening mesh seat 1 and a screening mesh seat 2 which can slide and retract relative to each other are installed. Since they can be retracted, the telescopic screening mesh assembly can be smoothly raised and lowered.

[0013] As a preferred embodiment of coal mine crushing equipment with screening function, the lifting drive mechanism includes a lever seat, a lead screw is rotatably installed inside the lever seat, a motor for driving the lead screw to rotate is installed at the end of the lever seat, a lifting seat is mounted on the lead screw, and the lifting seat is connected to the flip shaft between two groups of screening mesh seats.

[0014] By adopting the above scheme, in order to drive the lifting and lowering of the telescopic screening net assembly, the motor drives the lead screw to rotate, and under the transmission of the thread, the opposite ends of the two groups of telescopic screening net assemblies rise or fall at the same time; wherein, after the two groups of telescopic screening net assemblies rise, the coal can slide into the crushing chamber, so that the coal is crushed; after the two groups of telescopic screening net assemblies fall, the coal can slide to the middle of the two groups of telescopic screening net assemblies, so that the coal is screened.

[0015] As a preferred embodiment of the coal mine crushing equipment with screening function, a crushing knife seat is arranged above the crushing chamber, and a crushing knife group facing downward is installed below the crushing knife seat, and the crushing knife seat is driven to rise and fall by a hydraulic cylinder fixed outside the crushing chamber;

[0016] The crushing blade set comprises a crushing blade 1 arranged transversely and a crushing blade 2 arranged longitudinally; wherein the length of the crushing blade 1 is greater than the length of the crushing blade 2.

[0017] By adopting the above scheme, in order to realize coal crushing, the crushing blade group is driven down by the hydraulic cylinder for crushing. Through the criss-crossing crushing blade one and crushing blade two, the crushing blade one first contacts the coal for a first crushing, and the crushing blade two then contacts the coal for a second crushing, thereby realizing comprehensive crushing of the coal.

[0018] As a preferred embodiment of the coal mine crushing equipment with screening function, material channels which are inclined and lowered toward the location of the discharge port are fixedly installed directly below the telescopic screening net assembly.

[0019] By adopting the above scheme, in order to ensure the automatic discharge of coal, the coal falls through the mesh onto the material channel, and under the action of its inclined surface, it automatically slides out from the discharge port.

[0020] As a preferred embodiment of the coal mine crushing equipment with screening function, two viewing windows for directly viewing the interior of the equipment box are installed on the front side of the equipment box.

[0021] The above scheme is adopted to facilitate real-time observation of the crushing dynamics inside the equipment box, and to increase the visual window, so as to facilitate real-time understanding of the work progress inside the equipment box.

[0022] As a preferred implementation of a coal mine crushing device with screening function, a control host is also installed on the front side of the device box, and the control host mainly includes a single-chip microcomputer and a power supply; wherein the single-chip microcomputer is electrically connected to the motor, hydraulic cylinder and air cylinder respectively.

[0023] The above scheme is adopted. In order to realize the crushing control of coal, the program for controlling the motor, hydraulic cylinder and air cylinder to work is stored in the single chip microcomputer; in the initial stage, the two sets of telescopic screening mesh components are in a horizontal state. After adding coal to the feed port, the single chip microcomputer is first operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening mesh components to rise at the same time, and the coal slides to the crushing chamber for crushing; after being crushed once, the single chip microcomputer is operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening mesh components to descend at the same time, and the single chip microcomputer is operated to control the air cylinder to inflate the airbag, and the side flip seat is turned over, and the coal slides to the middle of the two sets of telescopic screening mesh components, and it is screened in the process of sliding; this reciprocating cycle is carried out until all the coal is screened.

[0024] After adopting the above technical solution, the beneficial effects of the present invention are:

[0025] 1. The equipment combines the telescopic screening net assembly controlled by lifting and lowering with the side-turning seat controlled by flipping, which can repeatedly screen and crush the coal, so that all the coal finally meets the screening requirements, that is, the qualified rate of coal passing through the net reaches 100%, and the coal crushing accuracy is higher;

[0026] 2. In order to improve the flexibility of the screening net seat, a screening net seat 1 and a screening net seat 2 that can slide and retract with each other are installed. Since they can be retracted, the telescopic screening net assembly can be smoothly raised and lowered;

[0027] 3. In order to drive the lifting and lowering of the telescopic screening mesh assembly, the motor drives the lead screw to rotate, and under the transmission of the thread, the opposite ends of the two sets of telescopic screening mesh assemblies are simultaneously raised or lowered; wherein, after the two sets of telescopic screening mesh assemblies are raised, the coal can slide into the crushing chamber, so that the coal is crushed; after the two sets of telescopic screening mesh assemblies are lowered, the coal can slide to the middle of the two sets of telescopic screening mesh assemblies, so that the coal is screened;

[0028] 4. In order to crush the coal, the hydraulic cylinder drives the crushing blade group to descend for crushing. Through the crisscrossing crushing blades 1 and 2, the crushing blade 1 first contacts the coal for a first crushing, and the crushing blade 2 contacts the coal for a second crushing, thereby achieving comprehensive crushing of the coal;

[0029] 5. In order to realize the crushing control of coal, the program for controlling the motor, hydraulic cylinder and air cylinder to work is stored in the single chip microcomputer; in the initial stage, the two sets of telescopic screening mesh components are in a horizontal state. After adding coal to the feed port, the single chip microcomputer is first operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening mesh components to rise at the same time, and the coal slides to the crushing chamber for crushing; after being crushed once, the single chip microcomputer is operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening mesh components to descend at the same time, and the single chip microcomputer is operated to control the air cylinder to inflate the airbag, and the side flip seat flips over, and the coal slides to the middle of the two sets of telescopic screening mesh components, and it is screened in the process of sliding; this reciprocating cycle is carried out until all the coal is screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 The three-dimensional structure of the present invention Figure 1 ;

[0032] Figure 2 The three-dimensional structure of the present invention Figure 2 ;

[0033] Figure 3 For display Figure 1 A three-dimensional diagram of the internal structure at the initial stage;

[0034] Figure 4 For display Figure 1 A three-dimensional diagram of the internal structure during crushing;

[0035] Figure 5 For display Figure 1 The three-dimensional structure of the interior during screening;

[0036] Figure 6 for Figure 3 A three-dimensional structural diagram of the middle telescopic screening net assembly and the side rollover seat when assembled;

[0037] Figure 7 for Figure 6 A three-dimensional structural diagram of the telescopic screening net assembly;

[0038] Figure 8 for Figure 3 Three-dimensional structural diagram of the middle crushing knife group.

[0039] Markings in the figure: 1-equipment box; 2-feeding port; 3-discharging port; 4-telescopic screening net assembly; 5-side tipping seat; 6-crushing chamber; 7-cylinder; 8-airbag; 9-screening net seat one; 10-screening net seat two; 11-turning shaft; 12-slide; 13-slide rod; 14-lever seat; 15-screw; 16-motor; 17-lifting seat; 18-crushing blade seat; 19-hydraulic cylinder; 20-crushing blade one; 21-crushing blade two; 22-material channel; 23-visual window; 24-control host. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 5As shown, a coal mine crushing equipment with screening function comprises an equipment box 1, a feeding port 2 is provided on the top of the equipment box 1, and discharge ports 3 are provided on the bottoms of the left and right sides of the equipment box 1 respectively; two groups of telescopic screening net assemblies 4 are installed inside the equipment box 1, and the two groups of telescopic screening net assemblies 4 are rotatably installed and symmetrical about the middle of the equipment box 1; a lifting drive mechanism is installed on the rear side of the equipment box 1, and the lifting drive mechanism can drive the opposite ends of the two groups of telescopic screening net assemblies 4 to rise or fall at the same time; side tipping seats 5 are rotatably installed on both sides of the two groups of telescopic screening net assemblies 4, and the side tipping seats 5 are located in a crushing chamber 6 opened in the equipment box 1; a cylinder 7 is installed at the bottom outside the crushing chamber 6, and the cylinder 7 is sealed with an air bag 8 located at the bottom of the side tipping seat 5, and the air bag 8 can drive the side tipping seat 5 to flip to the location of the telescopic screening net assembly 4 after being inflated. The device combines a lifting-controlled telescopic screening net assembly 4 with a flip-controlled side-turning seat 5, and can repeatedly screen and crush the coal, so that all the coal finally meets the screening requirements, that is, the qualified rate of coal passing through the net reaches 100%, and the accuracy of coal crushing is higher.

[0042] like Figure 6 to Figure 7 As shown, the telescopic screening net assembly 4 includes a screening net seat 1 9 and a screening net seat 2 10; wherein the screening net seat 1 9 is rotatably mounted with another group of screening net seats 1 9 through a flip shaft 11, wherein the screening net seat 2 10 is rotatably mounted with the flip seat 5 through flipping; screens are mounted on both the screening net seat 1 9 and the screening net seat 2 10; wherein a slide groove 12 is provided at the edge of the screening net seat 1 9, wherein a slide bar 13 is fixed at the edge of the screening net seat 2 10, and the slide bar 13 is always slidably mounted in the slide groove 12. In order to improve the flexibility of the screening net seat, the screening net seat 1 9 and the screening net seat 2 10 that can slide and retract mutually are installed, and because they can be retracted, the telescopic screening net assembly 4 can smoothly complete the lifting and lowering.

[0043] like Figure 2 As shown, the lifting drive mechanism includes a lever seat 14, a lead screw 15 is rotatably mounted inside the lever seat 14, a motor 16 for driving the lead screw 15 to rotate is mounted at the end of the lever seat 14, a lifting seat 17 is mounted on the lead screw 15, and the lifting seat 17 is connected to the flip shaft 11 between the two sets of screening mesh seats 9. In order to drive the lifting of the telescopic screening mesh assembly 4, the lead screw 15 is driven by the motor 16 to rotate, and under the transmission of the thread, the opposite ends of the two sets of telescopic screening mesh assemblies 4 are simultaneously raised or lowered; wherein, after the two sets of telescopic screening mesh assemblies 4 are raised, the coal can slide to the crushing chamber 6, so that the coal is crushed; after the two sets of telescopic screening mesh assemblies 4 are lowered, the coal can slide to the middle of the two sets of telescopic screening mesh assemblies 4, so that the coal is screened.

[0044] like Figure 4 , Figure 8As shown, a crushing knife seat 18 is arranged above the crushing chamber 6, and a crushing knife group facing downward is installed below the crushing knife seat 18. The crushing knife seat 18 is driven to rise and fall by a hydraulic cylinder 19 fixed outside the crushing chamber 6; wherein the crushing knife group includes a crushing blade 1 20 arranged horizontally and a crushing blade 2 21 arranged vertically; wherein the length of the crushing blade 1 20 is greater than the length of the crushing blade 2 21. In order to realize the crushing of coal, the crushing knife group is driven by the hydraulic cylinder 19 to descend for crushing, and through the crisscrossing crushing blades 1 20 and crushing blades 2 21, the crushing blade 1 20 first contacts the coal for primary crushing, and the crushing blade 2 21 contacts the coal for secondary crushing, thereby realizing comprehensive crushing of the coal.

[0045] like Figure 3 As shown, a material channel 22 is fixedly installed directly below the telescopic screening net assembly 4, which is inclined downward toward the location of the discharge port 3. In order to ensure the automatic discharge of coal, the coal passes through the net and falls onto the material channel 22, and under the action of its inclined surface, it will automatically slide out from the discharge port 3.

[0046] like Figure 1 As shown, two visual windows 23 for directly viewing the interior of the equipment box 1 are installed on the front side of the equipment box 1. The visual windows 23 are made of explosion-proof tempered glass. In order to facilitate real-time observation of the crushing dynamics in the equipment box 1, the visual windows 23 are added to facilitate real-time understanding of the work progress in the equipment box 1.

[0047] like Figure 1 As shown, a control host 24 is also installed on the front side of the equipment box 1, and the control host 24 mainly includes a single chip microcomputer and a power supply; wherein the single chip microcomputer is electrically connected to the motor 16, the hydraulic cylinder 19 and the cylinder 7 respectively. In order to realize the crushing control of coal, the program for controlling the motor 16, the hydraulic cylinder 19 and the cylinder 7 to work is stored in the single chip microcomputer; in its initial stage, the two sets of telescopic screening net components 4 are in a horizontal state. After the coal is added to the feed port 2, the single chip microcomputer is first operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening net components 4 to rise at the same time, and at this time, the coal slides to the crushing chamber 6 for crushing; after being crushed once, the single chip microcomputer is operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening net components 4 to descend at the same time, and the single chip microcomputer is operated to control the cylinder 7 to inflate the airbag 8, at this time, the side tipping seat 5 flips, and the coal slides to the middle of the two sets of telescopic screening net components 4, and it is screened in the process of sliding; this reciprocating cycle is carried out until all the coal is screened.

[0048] Working principle of the present invention:

[0049] In the initial stage, the two sets of telescopic screening net components 4 are in a horizontal state. Figure 3 shown.

[0050] After the coal is added to the feed port 2, the single chip microcomputer is operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening mesh components 4 to rise simultaneously. At this time, the coal slides into the crushing chamber 6 for crushing. Figure 4 As shown;

[0051] After being crushed once, the single chip microcomputer is operated to control the lifting drive mechanism to drive the opposite ends of the two sets of telescopic screening net components 4 to descend simultaneously, and the single chip microcomputer is operated to control the cylinder 7 to inflate the air bag 8. At this time, the side tipping seat 5 turns over, and the coal slides to the middle of the two sets of telescopic screening net components 4. It is screened in the process of sliding. Figure 5 As shown, this reciprocating cycle is performed until all the coal is screened; the equipment repeatedly screens and crushes the coal so that all the coal finally meets the screening requirements, that is, the qualified rate of coal passing through the screen reaches 100%, and the accuracy of coal crushing is higher.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine crushing device with a screening function, comprising a device housing (1), a material inlet (2) being provided at the top of the device housing (1), and material outlets (3) being provided at the bottoms of the left and right sides of the device housing (1); Features: Two sets of telescopic screening net assemblies (4) are installed inside the equipment box (1), and the two sets of telescopic screening net assemblies (4) are rotatably installed and symmetrical about the middle of the equipment box (1); a lifting drive mechanism is installed on the rear side of the equipment box (1), and the lifting drive mechanism can drive the opposite ends of the two sets of telescopic screening net assemblies (4) to rise or fall simultaneously; A side-turning seat (5) is rotatably mounted on both sides of the two sets of telescopic screening net assemblies (4), and the side-turning seat (5) is located in a crushing chamber (6) opened in the equipment box (1); a cylinder (7) is mounted on the bottom outside the crushing chamber (6), and the cylinder (7) is sealedly connected to an air bag (8) located at the bottom of the side-turning seat (5), and the air bag (8) can drive the side-turning seat (5) to turn over to the location of the telescopic screening net assembly (4) after being inflated.

2. The coal mine crushing equipment with screening function according to claim 1 is characterized in that: The telescopic screening net assembly (4) comprises a screening net seat 1 (9) and a screening net seat 2 (10); wherein the screening net seat 1 (9) is rotatably mounted with another screening net seat 1 (9) via a turning shaft (11), wherein the screening net seat 2 (10) is rotatably mounted with the side turning seat (5) via a turning shaft (11); The screening mesh seat 1 (9) and the screening mesh seat 2 (10) are both installed with screening meshes; a slide groove (12) is provided at the edge of the screening mesh seat 1 (9), and a slide rod (13) is fixed at the edge of the screening mesh seat 2 (10), and the slide rod (13) is always slidably installed in the slide groove (12).

3. The coal mine crushing equipment with screening function according to claim 2 is characterized in that: The lifting drive mechanism comprises a lever seat (14), a lead screw (15) is rotatably mounted inside the lever seat (14), a motor (16) for driving the lead screw (15) to rotate is mounted at the end of the lever seat (14), a lifting seat (17) is mounted on the lead screw (15), and the lifting seat (17) is connected to a turning shaft (11) between two sets of screening mesh seats (9).

4. The coal mine crushing equipment with screening function according to claim 3 is characterized in that: A crushing knife seat (18) is arranged above the crushing chamber (6), and a crushing knife group arranged in a crisscross pattern and facing downward is installed below the crushing knife seat (18). The crushing knife seat (18) is driven to rise and fall by a hydraulic cylinder (19) fixed outside the crushing chamber (6).

5. The coal mine crushing equipment with screening function according to claim 4 is characterized in that: The crushing blade assembly comprises a crushing blade one (20) arranged transversely and a crushing blade two (21) arranged longitudinally; wherein the length of the crushing blade one (20) is greater than the length of the crushing blade two (21).

6. The coal mine crushing equipment with screening function according to claim 5 is characterized in that: Directly below the telescopic screening net assembly (4), a material channel (22) is fixedly installed and is inclined downward toward the location of the material outlet (3).

7. The coal mine crushing equipment with screening function according to claim 6 is characterized in that: Two viewing windows (23) for directly viewing the interior of the device box (1) are installed on the front side of the device box (1).

8. The coal mine crushing equipment with screening function according to any one of claims 5 to 7, characterized in that: A control host (24) is also installed on the front side of the equipment box (1), and the control host (24) mainly includes a single-chip microcomputer and a power supply; wherein the single-chip microcomputer is electrically connected to the motor (16), the hydraulic cylinder (19) and the air cylinder (7) respectively.

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