A coal-fired slag crushing, screening and grading device

Abstract

The present invention belongs to the technical field of cement production, and in particular, relates to a coal-fired furnace slag crushing, screening and grading device. The present invention achieves the effect of avoiding dust from being raised during crushing and effectively screening and grading slag by arranging a discharge pipe, a feed pipe, a filter unit and a covering unit on the main body of the crusher. The present invention has the advantages of a reasonable and effective covering protection structure during crushing, good dust prevention effect, automatic closure of the covering structure, a simple and effective filter screening structure, a good overweight alarm effect of intercepted material during screening, a sensitive structure and a high degree of automation.

Description

Technical Field

[0001] The invention belongs to the technical field of cement production, and in particular relates to a coal-fired furnace slag crushing, screening and grading device. Background Art

[0002] In the cement production process, coal-fired slag needs to be crushed and graded to facilitate subsequent raw material mixing. The existing process is generally achieved through a crushing and screening machine. On the other hand, most existing crushing and screening machines have the problem of dust pollution during the crushing process, which greatly endangers the health of operators.

[0003] A Chinese utility model patent with patent publication number CN206425068U and publication date 2017.08.22 discloses a crushing device, including a cement manufacturing trough and a crushed stone storage device, wherein a motor protection cover is installed inside the cement manufacturing trough, a rotating shaft is installed above the motor protection cover, a preliminary crushing device is arranged below the openable elastic plate, a second motor is installed below the grinding device, and a base is arranged below the second motor.

[0004] However, the pulverizing device in the utility model patent has the problem that the feed port is open, which makes the overall use inconvenient and untidy. Summary of the invention

[0005] The purpose of the present invention is to provide a coal-fired furnace slag crushing, screening and grading device, which can achieve the effect of avoiding dust from being raised during crushing and effectively screening and grading slag materials by arranging a discharge pipe, a feed pipe, a filter unit and a covering unit on the crusher body. The present invention has the advantages of reasonable and effective covering protection structure during crushing, good dust prevention effect, automatic closure of the covering structure, simple and effective filter screening structure, good overweight alarm effect of intercepted material during screening, sensitive structure and high degree of automation.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: a coal-fired slag crushing, screening and grading device, including a crusher main body, a discharge pipe and a feed pipe arranged on the crusher main body, and also including a filter unit arranged on the discharge pipe and intercepting large particles of coal-fired slag through the filter to screen and grade the coal-fired slag, and a covering unit arranged on the feed pipe and used to cover the feed pipe after feeding by tensioning two semicircular covering films and aligning them into a complete circle to achieve a dust prevention effect.

[0007] A further preferred technical solution is that the filter unit includes an annular mesh frame arranged on the lower end surface of the discharge pipe, a filter body arranged in the annular mesh frame, a mounting ring arranged on the annular mesh frame, a plug-in groove arranged on the outer ring surface of the discharge pipe, a mounting hole arranged on the mounting ring, and a plug-in column plugged into the plug-in groove and the mounting hole and used to fix the annular mesh frame.

[0008] A further preferred technical solution is that the filter unit also includes a U-shaped frame arranged in the plug-in slot and opening outward, an elastic part arranged on the bottom surface of the plug-in slot and used to push up the U-shaped frame, and an energized lighting part arranged in the plug-in slot and used to intercept a large number of large particles of coal slag on the filter body and to light up a prompt when the elastic part is pressed down by gravity.

[0009] A further preferred technical solution is that the elastic part includes a limit groove arranged on the lower surface of the U-shaped frame, a limit column arranged on the inner bottom surface of the insertion groove and plugged into the limit groove, and a support spring sleeved on the limit column and used to push the U-shaped frame upward.

[0010] A further preferred technical solution is that the power-on lighting part includes a light bulb arranged on the outer side surface of the upper plate of the U-shaped frame, a DC dry battery arranged on the lower surface of the U-shaped frame, a lower conductive sheet arranged on the inner bottom surface of the plug-in slot, an upper conductive sheet arranged on the lower surface of the U-shaped frame, a plug-in ring groove arranged on the inner side surface of the U-shaped frame, two arc-shaped conductive sheets arranged on the plug-in ring groove, and a conductive ring bonded to the end face of the annular plug-in column and used to contact and connect the two arc-shaped conductive sheets.

[0011] A further preferred technical solution is that the two lower conductive sheets are respectively connected to the two electrodes of the DC dry battery by wires, and the two upper conductive sheets are respectively connected to the light bulb and one of the arc-shaped conductive sheets by wires.

[0012] A further preferred technical solution is that a screw connection column for inserting the hollow plug-in column is provided at the middle opening of the U-shaped frame, and a screw connection ring for screwing and installing on the screw connection column is provided inside the plug-in column.

[0013] A further preferred technical solution is that the covering unit includes a mounting ring which is snap-fitted on the side of the feed tube and has an inverted U-shaped cross-section, two semicircular frames with arcuate edges bonded to the inner central ring surface of the mounting ring, and a covering film body arranged in the semicircular frames.

[0014] A further preferred technical solution is that the semicircular frame is made of rubber.

[0015] A further preferred technical solution is that magnet sheet slots are provided on the middle straight edges of the two semicircular frames, and magnet sheets are bonded to the magnet sheet slots for aligning and closing the two covering film bodies by magnetic attraction after the external feeding tube is withdrawn.

[0016] The present invention achieves the effect of preventing dust from being raised during pulverization and effectively screening and grading slag materials by arranging a discharge pipe, a feed pipe, a filter unit and a covering unit on the main body of the pulverizer. The present invention has the advantages of reasonable and effective covering protection structure during pulverization, good dust prevention effect, automatic sealing of the covering structure, simple and effective filter screening structure, good overweight alarm effect of intercepted material during screening, sensitive structure and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the position structure of the filter unit in the present invention.

[0019] Figure 3 It is a schematic diagram of the position structure of the elastic part and the energized lighting part in the present invention.

[0020] Figure 4 It is a schematic diagram of the position structure of the upper conductive sheet and the arc-shaped conductive sheet in the present invention.

[0021] Figure 5 It is a schematic diagram of the position structure of the covering unit in the present invention.

[0022] Figure 6 It is a schematic diagram of the position structure of the semicircular frame in the present invention.

[0023] Figure 7 It is a schematic diagram of the position structure of the magnet pieces in the present invention. DETAILED DESCRIPTION

[0024] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0025] Example: As attached Figure 1 , 2 , 3, 4, 5, 6 and attached Figure 7As shown, a coal-fired slag crushing, screening and grading device includes a crusher body 11, a discharge pipe 12 and a feed pipe 13 arranged on the crusher body 11, and also includes a filter unit 1 arranged on the discharge pipe 12 and intercepting large particles of coal-fired slag through the filter to screen and grade the coal-fired slag, and a covering unit 2 arranged on the feed pipe 13 and used to cover the feed pipe 13 after feeding by tensioning two semicircular covering films and aligning them into a complete circle to achieve a dust prevention effect.

[0026] In this embodiment, after adding large pieces of the coal-fired slag to the feed pipe 13, the pulverizer body 11 ensures a basic pulverizing effect, and finally most of the material becomes small particles, passes through the discharge pipe 12 and finally passes through the filter unit 1. Large particles of coal-fired slag are not effective in the cement production process, so the filter unit 1 can be used to refine and pulverize them again after interception to ensure a basic screening and grading pulverizing effect.

[0027] On the other hand, the feed pipe 13 is closed after feeding, ensuring that the feed pipe 13 is closed by the covering unit 2 when the pulverizer body 11 is operating to pulverize, thereby avoiding dust from being raised and ensuring the cleanliness of the production environment and the health of the operators.

[0028] The filter unit 1 includes an annular mesh frame 101 disposed on the lower end surface of the discharge pipe 12, a filter body 102 disposed in the annular mesh frame 101, a mounting ring 103 disposed on the annular mesh frame 101, a plug-in slot 104 disposed on the outer ring surface of the discharge pipe 12, a mounting hole 105 disposed on the mounting ring 103, and a plug-in column 106 plugged into the plug-in slot 104 and the mounting hole 105 and used to fix the annular mesh frame 101. The filter unit 1 also includes a U-shaped frame 107 disposed in the plug-in slot 104 and opening outward, an elastic part 108 disposed on the inner bottom surface of the plug-in slot 104 and used to push up the U-shaped frame 107, and an energized lighting part 109 disposed in the plug-in slot 104 and used to intercept a large number of large particles of coal-fired slag on the filter body 102 and to light up a prompt when the elastic part 108 is pressed down by gravity.

[0029] In this embodiment, the filter body 102 passes qualified coal-fired slag with smaller particles and retains large particles, and is finally installed on the discharge pipe 12 through the annular mesh frame 101, the mounting ring 103 and the plug-in column 106 to ensure the effectiveness of the filtering, screening and grading operations.

[0030] On the other hand, the plug-in column 106 is arranged on the U-shaped frame 107, and an elastic part 108 for elastic support is provided under the U-shaped frame 107. When a large amount of large-particle coal slag is retained on the filter body 102, the plug-in column 106 presses down the U-shaped frame 107, and finally the power-on lighting part 109 is switched from a separate disconnected state to a contact conductive state. Secondly, the alarm indicator light bulb lights up, reminding the operator that there is a large amount of material on the filter body 102 and it is not suitable for filtering. The machine should be turned off after this crushing is completed, and the filter body 102 should be removed and the large-particle material should be poured out before the subsequent crushing operation is carried out to avoid briquetting the filter body 102. The large-particle coal slag accumulated for many times can be further crushed by other means.

[0031] The elastic portion 108 includes a limiting groove 108a arranged on the lower surface of the U-shaped frame 107, a limiting column 108b arranged on the inner bottom surface of the insertion groove 104 and plugged into the limiting groove 108a, and a supporting spring 108c sleeved on the limiting column 108b and used to push the U-shaped frame 107 upward. The energized lighting unit 109 includes a bulb 109a disposed on the outer side of the upper plate of the U-shaped frame 107, a DC dry battery 109b disposed on the lower surface of the U-shaped frame 107, a lower conductive sheet 109c disposed on the inner bottom surface of the plug-in slot 104, an upper conductive sheet 109d disposed on the lower surface of the U-shaped frame 107, a plug-in ring slot 109e disposed on the inner side surface of the U-shaped frame 107, two arc-shaped conductive sheets 109f disposed on the plug-in ring slot 109e, and a conductive ring 109g bonded to the end surface of the annular plug-in column 106 and used for contacting and connecting the two arc-shaped conductive sheets 109f. The two lower conductive sheets 109c are respectively connected to the two electrodes of the DC dry battery 109b by wires, and the two upper conductive sheets 109d are respectively connected to the bulb 109a and one of the arc-shaped conductive sheets 109f by wires. A screw connection post 110 for inserting the hollow insertion post 106 is provided at the middle opening of the U-shaped frame 107 , and a screw connection ring 111 for screwing and installing on the screw connection post 110 is provided inside the insertion post 106 .

[0032] In this embodiment, the use method and advantages of the elastic portion 108 and the energized lighting portion 109 are as follows:

[0033] First, initially, the support spring 108c pushes the entire support spring 108c upward, and the left and right groups of the lower conductive sheets 109c and the upper conductive sheets 109d are separated from each other, forming the only two disconnection positions between the DC dry battery 109b and the light bulb 109a, and the disconnection positions are separated or contacted synchronously;

[0034] Second, after a large amount of large particles of coal-fired slag are trapped on the filter body 102, it is necessary to notify the crushing and pouring out. At this time, the light bulb 109a should light up to remind, and the implementation method is that the U-shaped frame 107 together with the support spring 108c is pressed down, and the lower conductive sheet 109c and the upper conductive sheet 109d are pressed against each other to complete the contact state, and then the DC dry battery 109b supplies power to the light bulb 109a, and the light bulb 109a smoothly lights up to play a warning role. A red light source or buzzer can be set for better effect;

[0035] Third, after the light bulb 109a lights up to alarm, after the batch of crushing in the crusher body 11 is completed, the equipment is turned off, the plug-in column 106 is taken out, the annular mesh frame 101 and the filter body 102 are removed, and the large particles of the coal-fired slag are poured out, and then the crushing operation can be carried out again to avoid the discharge pipe 12 being blocked and the filter body 102 being crushed;

[0036] Fourth, the setting of the warning value of the interception amount on the filter body 102 can be achieved by adjusting the elastic coefficient of the support spring 108c, the vertical distance between the lower conductive sheet 109c and the upper conductive sheet 109d, and the weight of the annular mesh frame 101 itself. For example, when the filter body 102 is thicker and can withstand more intercepted materials, the elastic coefficient of the support spring 108c can be appropriately increased, and the vertical distance between the lower conductive sheet 109c and the upper conductive sheet 109d can also be appropriately increased;

[0037] Fifth, the lower conductive sheet 109c is vertically aligned with the upper conductive sheet 109d, and the U-shaped frame 107 can play a supporting and limiting role after being pressed down, thereby preventing the U-shaped frame 107 from crushing the DC dry battery 109b. The screw connection between the screw column 110 and the screw ring 111 ensures that the plug-in column 106 is not easily removed from the plug-in slot 104.

[0038] The covering unit 2 includes a mounting ring 201 which is snap-fitted on the side of the feed tube 13 and has an inverted U-shaped cross section, two semicircular frames 202 with arc-shaped edges bonded on the inner central annular surface of the mounting ring 201, and a covering film body 203 disposed in the semicircular frames 202. The semicircular frames 202 are made of rubber. Magnet sheet slots 204 are provided on the straight edges in the middle of the two semicircular frames 202, and magnet sheets 205 are bonded on the magnet sheet slots 204 for aligning and closing the two covering film bodies 203 by magnetic attraction after the external feed tube is withdrawn.

[0039] In this embodiment, the two semicircular frames 202 and the covering film body 203 form a solid semicircular structure, the circular edges of the semicircular structure are bonded, and the two straight edges are close to each other and bonded by the two rows of magnet pieces 205, so that the external feed tube has the advantages of low resistance and convenient insertion and feeding when inserted between the two straight edges. After the feeding is completed and the external feed tube is pulled out, the straight edges rely on their own elastic force and the attractive magnetic force between the two rows of magnet pieces 205 to ensure that the initial alignment can be restored after the pulling out action and the effect of forming a complete circle can be achieved, and finally the covering unit 2 is sealed to ensure that dust is not easily raised when the crusher body 11 is running.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A coal-fired furnace slag crushing, screening and grading device, comprising a crusher body (11), a discharge pipe (12) and a feed pipe (13) arranged on the crusher body (11), characterized in that: It also includes a filter unit (1) arranged on the discharge pipe (12) and used for screening and grading the coal-fired furnace slag by intercepting large particles of coal-fired furnace slag through the filter, and a covering unit (2) arranged on the feed pipe (13) and used for covering the feed pipe (13) after feeding by aligning two semicircular covering films into a complete circle after tensioning, thereby achieving a dust prevention effect. The filter unit (1) comprises an annular screen frame (101) arranged on the lower end surface of the discharge pipe (12), a filter body (102) arranged in the annular screen frame (101), a mounting ring (103) arranged on the annular screen frame (101), a plug-in groove (104) arranged on the outer ring surface of the discharge pipe (12), a mounting hole (105) arranged on the mounting ring (103), and a plug-in column (106) plugged into the plug-in groove (104) and the mounting hole (105) and used to fix the annular screen frame (101). The filter unit (1) further comprises a U-shaped frame (107) arranged in the plug-in slot (104) and opening outward, an elastic portion (108) arranged on the inner bottom surface of the plug-in slot (104) and used to push the U-shaped frame (107) upward, and an energized lighting portion (109) arranged in the plug-in slot (104) and used to light up a prompt when a large number of large particles of coal-fired slag are retained on the filter body (102) and the elastic portion (108) is pressed downward by gravity. The power-on lighting portion (109) comprises a light bulb (109a) arranged on the outer side surface of the upper plate of the U-shaped frame (107), a DC dry battery (109b) arranged on the lower surface of the U-shaped frame (107), a lower conductive sheet (109c) arranged on the inner bottom surface of the plug-in slot (104), an upper conductive sheet (109d) arranged on the lower surface of the U-shaped frame (107), a plug-in ring groove (109e) arranged on the inner side surface of the U-shaped frame (107), two arc-shaped conductive sheets (109f) arranged on the plug-in ring groove (109e), and a conductive ring (109g) bonded to the end surface of the annular plug-in column (106) and used for contacting and connecting the two arc-shaped conductive sheets (109f). The two lower conductive sheets (109c) are respectively connected to the two electrodes of the DC dry battery (109b) by wires, and the two upper conductive sheets (109d) are respectively connected to the light bulb (109a) and one of the arc-shaped conductive sheets (109f) by wires. A screw connection post (110) for inserting the hollow inserting post (106) is provided at the middle opening of the U-shaped frame (107), and a screw connection ring (111) for screwing onto the screw connection post (110) is provided inside the inserting post (106).

2. A coal-fired furnace slag crushing, screening and grading device according to claim 1, characterized in that: The elastic portion (108) comprises a limiting groove (108a) arranged on the lower surface of the U-shaped frame (107), a limiting column (108b) arranged on the inner bottom surface of the plug-in groove (104) and plugged into the limiting groove (108a), and a supporting spring (108c) sleeved on the limiting column (108b) and used to push the U-shaped frame (107) upwards.

3. The coal-fired furnace slag crushing, screening and grading device according to claim 1, characterized in that: The covering unit (2) comprises a second mounting ring (201) which is snap-fitted on the side of the feed pipe (13) and has an inverted U-shaped cross section, two semicircular frames (202) with arcuate edges bonded on the inner central annular surface of the second mounting ring (201), and a covering film body (203) arranged in the semicircular frames (202).

4. A coal-fired furnace slag crushing, screening and grading device according to claim 3, characterized in that: The semicircular frame (202) is made of rubber.

5. The coal-fired furnace slag crushing, screening and grading device according to claim 3, characterized in that: A magnet sheet slot (204) is provided on the middle straight edges of the two semicircular frames (202), and a magnet sheet (205) is bonded to the magnet sheet slot (204) for aligning and sealing the two covering film bodies (203) by magnetic attraction after the external feed pipe is withdrawn.

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