Coal briquette crushing equipment for coal detection

Abstract

The invention relates to coal briquette crushing equipment for coal detection, and relates to the field of crushing equipment.The coal briquette crushing equipment comprises a feeding conveying belt, a crushing device, a discharging conveying belt and a cleaning device, and the cleaning device comprises an axial reciprocating motion assembly, a rotation driving assembly, a negative pressure pipe, a metal net cylinder and two vertically-arranged falling pipes; the peripheral face of the metal net cylinder is sleeved with filter screen cloth, a rubber strip is bonded to the surface of the filter screen cloth, and bristles are arranged on the surface of the rubber strip. The upper ends of the falling pipes fixedly communicate with containing pipes coaxial with the metal net cylinder, and the area between the two containing pipes is set as a cleaning area. A cavity, located in the two sealing discs, of the metal net cylinder is set as a negative pressure cavity, the rotation driving assembly is used for driving the metal net cylinder to rotate, and the axial reciprocating motion assembly is used for driving the metal net cylinder to axially reciprocate so as to enter the cleaning area or the containing pipe. The coal ash cleaning effect can be improved.

Description

Technical Field

[0001] The present application relates to the field of crushing equipment, and in particular to a coal block crushing equipment for coal detection. Background Art

[0002] When testing the coal quality, crushing equipment is needed to first crush the coal blocks to obtain small and medium mesh coal particles, and then use pulverizing equipment to crush the coal particles into small mesh coal powder.

[0003] The crushing equipment includes a feed conveyor belt, a crushing device and a discharge conveyor belt. The feed conveyor belt is used to convey the coal blocks of the same batch to the crushing device. The crushing device is used to crush the coal blocks into coal particles. The discharge conveyor belt is used to convey the crushed coal particles to the receiving barrel.

[0004] There is often a lot of coal ash remaining on the belt of the discharging conveyor belt. In order to clean the coal ash remaining on the belt of the discharging conveyor belt, a brush roller is arranged under the discharging conveyor belt. The brush roller abuts against the belt surface of the discharging conveyor belt to scrape off the coal ash. However, when there is a lot of coal ash, it is easy to cause the coal ash to fly and pollute the on-site environment. Summary of the invention

[0005] In order to improve the coal ash cleaning effect, the present application provides a coal block crushing equipment for coal detection.

[0006] The present application provides a coal block crushing device for coal detection, which adopts the following technical solution: A coal block crushing equipment for coal detection, comprising a feed conveyor belt, a crushing device, a discharge conveyor belt and a cleaning device, wherein the discharge end of the feed conveyor belt is connected to the feed end of the crushing device, the discharge end of the crushing device is connected to the feed end of the discharge conveyor belt, and the cleaning device is used to clean the coal ash on the belt surface of the discharge conveyor belt; the cleaning device comprises an axial reciprocating motion component, a rotating drive component, a negative pressure pipe, a metal mesh cylinder and two vertically arranged drop pipes, the metal mesh cylinder extends along the width direction of the discharge conveyor belt, the length of the metal mesh cylinder is greater than twice the width of the discharge conveyor belt, the outer peripheral surface of the metal mesh cylinder is sleeved with a filter cloth, the surface of the filter cloth is bonded with a plurality of rubber strips evenly arranged circumferentially, the surface of the rubber strip is provided with bristles, the metal mesh cylinder An anti-slip ring for limiting the axial movement of the rubber strip is coaxially fixed to the end portion of the outer peripheral surface; the upper ends of the drop tubes are fixedly connected to a accommodating tube coaxially arranged with the metal mesh cylinder, and the lower ends of the two drop tubes are commonly connected to a recovery trough body, and the area between the two accommodating tubes is set as a clean area; the accommodating tube is fixed with two sealing disks located in the metal mesh cylinder, and the chambers of the metal mesh cylinder located in the two sealing disks are set as a negative pressure chamber, the length of the negative pressure chamber is equal to the width of the discharge conveyor belt, and the negative pressure chamber is located in the clean area, and the negative pressure tube is fixedly connected to the metal mesh cylinder, and the negative pressure tube is connected to the negative pressure chamber; the rotation drive assembly is used to drive the metal mesh cylinder to rotate, and the axial reciprocating movement assembly is used to drive the metal mesh cylinder to axially reciprocate to enter the clean area or the accommodating tube.

[0007] By adopting the above technical solution, during cleaning, the negative pressure tube causes the negative pressure chamber to generate negative pressure. Under the action of negative pressure, the filter mesh cloth fits more closely to the metal mesh cylinder, and the friction between the two increases. The rotating drive assembly drives the metal mesh cylinder to rotate, and the metal mesh cylinder drives the filter mesh cloth and the bristles to rotate through friction, so as to brush off the coal ash on the belt of the discharge conveyor belt. Moreover, due to the continuous air suction in the negative pressure chamber, the brushed coal ash will be quickly adsorbed on the surface of the filter mesh cloth, thereby reducing the diffusion pollution of the coal ash.

[0008] At the same time, the axial reciprocating assembly drives the metal mesh tube to move axially and reciprocatingly to enter the containing tube, so that the part of the filter mesh cloth that is full of coal ash can enter the containing tube (at the same time, the part of the filter mesh cloth that is not adsorbed with coal ash enters the clean area from the containing tube to perform the adsorption action). At this time, there is no negative pressure on the part of the filter mesh cloth located in the containing tube. Under the action of centrifugal force and gravity, the coal ash in this part will enter the recovery tank through the drop pipe.

[0009] A sealing disk is provided to separate a negative pressure cavity in the inner cavity of the metal mesh cylinder, and the sealing disk is fixed to the containing tube, so that the metal mesh cylinder and the filter mesh cloth move axially relative to the sealing disk, that is, the negative pressure cavity is always located in the clean area, thereby ensuring that the portion of the filter mesh cloth located in the containing tube does not contact the negative pressure cavity, that is, the coal ash in this portion is relatively loose and easy to fall off into the drop pipe, thereby ensuring the clean recovery effect of the coal ash.

[0010] An anti-slip ring is provided to reduce the possibility of the filter cloth detaching from the metal mesh cylinder due to the friction of the belt.

[0011] Optionally, the rotation drive assembly includes a first motor and a first gear, the negative pressure tube is rotatably connected to the containing tube, the negative pressure tube is coaxially arranged with the metal mesh tube, one end of the negative pressure tube is closed, and the other end of the negative pressure tube has an opening, the open end of the negative pressure tube is provided with a rotary joint and a soft suction tube, the negative pressure tube passes through the sealing disk, a branch tube is fixed in the middle of the negative pressure tube, the branch tube is located in the negative pressure chamber, the branch tube is fixedly connected to the inner wall of the metal mesh tube, and the branch tube is provided with a plurality of suction holes; the outer peripheral surface of the negative pressure tube is convexly structured with a strip-shaped convex tooth, the strip-shaped convex tooth extends axially along the negative pressure tube, the first motor is installed on the drop tube, the first gear is installed on the output shaft of the first motor, and the first gear is meshed with the strip-shaped convex tooth.

[0012] By adopting the above technical solution, a branch pipe is set to achieve a fixed connection between the negative pressure tube and the metal mesh cylinder, and the first gear cooperates with the bar-shaped convex teeth to drive the negative pressure tube to rotate, thereby driving the metal mesh cylinder and the filter cloth to rotate.

[0013] Optionally, the axial reciprocating movement assembly includes a second motor, a second gear and a rack, the cross-section of the rack is square, the rack is axially slidingly connected to the containing tube, one end of the rack is rotatably connected to the end of the negative pressure tube, the second motor is installed on the drop tube, the second gear is installed on the output shaft of the second motor, and the second gear is meshed with the rack.

[0014] By adopting the above technical solution, the negative pressure tube is driven to reciprocate axially through the meshing of the second gear and the rack and the forward and reverse rotation of the second motor.

[0015] By setting the cross section of the rack, the rack cooperates with the end of the containing tube and the rack cannot rotate on its own, thereby ensuring that the tooth surface of the rack is always facing downward and the direction of the tooth surface of the rack will not be changed due to the rotation of the negative pressure tube, that is, ensuring that the rack and the second gear remain in meshing state.

[0016] Optionally, end caps are fixed at both ends of the metal mesh tube, and the area of ​​the inner cavity of the metal mesh tube between the end caps and the sealing disk is set as a positive pressure chamber, and a sleeve is fixed in the accommodating tube, the sleeve is sleeved in the negative pressure tube, the sleeve is passed through the end caps, and the end of the sleeve is coaxially rotatably connected to the disk surface of the sealing disk; an airway is opened in the sleeve, an air outlet is provided at one end of the airway, the air outlet is connected to the positive pressure chamber, and the other end of the airway is connected to a soft blowing tube.

[0017] By adopting the above technical solution, when the part of the filter cloth that absorbs the coal ash moves axially into the containing tube, since the positive pressure chamber is always located in the containing tube, the soft blowing pipe blows high-pressure gas into the airway, and the high-pressure gas enters the positive pressure chamber through the air outlet. The high-pressure gas is blown from the inside to the outside to the inner circumference of the filter cloth to recoil the coal ash from the filter cloth, and the coal ash enters the recovery tank through the drop pipe, thereby reducing the coal ash residue on the filter cloth to ensure the effectiveness of the next cleaning belt.

[0018] Optionally, the containing tube is fixed with two end caps by a support rod, and the outer circumference of the end caps is in contact with the inner circumference of the metal mesh tube, and the area of ​​the inner cavity of the metal mesh tube between the end caps and the sealing disk is set as a positive pressure chamber, and a sleeve is fixed in the containing tube, and the sleeve is sleeved on the negative pressure tube, and the sleeve is passed through the end caps, and the end of the sleeve is coaxially rotatably connected with the disk surface of the sealing disk; an airway is opened in the sleeve, and an air outlet is provided at one end of the airway, and the air outlet is connected to the positive pressure chamber, and the other end of the airway is connected to a soft blowing tube.

[0019] By adopting the above technical solution, since the end cover and the sealing disk are relatively fixed to the containing tube, the distance between the end cover and the sealing disk is fixed, that is, the volume and air pressure of the positive pressure chamber are constant, thereby ensuring that when the filter mesh moves axially and passes through the positive pressure chamber, the high-pressure gas in the positive pressure chamber will evenly act on the coal ash on the filter mesh, thereby improving the recoil effect on the coal ash.

[0020] Optionally, both of the two drop tubes are fixed with a through rod, which is rotatably connected to a rocker arm, and a torsion spring is provided between the through rod and the rocker arm; when the end of the metal mesh tube moves axially to a position of the accommodating tube away from the cleaning area, the upper end of the rocker arm is located between two adjacent bristles, and when the bristles move circumferentially relative to the rocker arm, the rocker arm elastically deflects and forces the rubber strip to elastically shift around the axis of the metal mesh tube.

[0021] By adopting the above technical solution, when the end of the metal mesh tube moves axially to a position of the containing tube away from the clean area, that is, the part of the filter cloth that is full of coal ash completely enters the containing tube and the negative pressure chamber, this part is set as the first part, and the part of the filter cloth that is not adsorbed with coal ash completely enters the clean area and the positive pressure chamber, and this part is set as the second part. Due to the action of negative pressure, the second part fits the metal mesh tube more closely, and the friction is greater, so the second part is not easy to deflect relative to the metal mesh tube. Due to the action of positive pressure, the friction between the first part and the metal mesh tube is smaller, and the first part is easier to deflect relative to the metal mesh tube.

[0022] At this time, when the bristles move circumferentially relative to the rocker arm, the bristles interfere with the upper end of the rocker arm, the rocker arm elastically deflects and forces the rubber strip to elastically shift around the axis of the metal mesh tube, and the rubber strip drives the first part of the filter cloth to shift around the axis of the metal mesh tube relative to the second part, that is, the first part is twisted. At this time, the angle between the mesh of the first part and the mesh of the metal mesh tube changes, that is, the blowing angle of the high-pressure gas changes with the mesh of the first part, so that the first part can be recoiled from different angles, thereby improving the recoil effect of the coal ash and reducing the residue of stubborn coal ash.

[0023] Secondly, when the rubber strip is elastically reset, the first portion is reset. During this process, the first portion is continuously twisted and reset, generating vibration, thereby shaking off the coal ash more quickly.

[0024] Optionally, the upper end of the swing rod has a guide surface, and the guide surface is used for the end of the bristle to abut against so as to force the rubber strip to bend elastically along its own length direction.

[0025] By adopting the above technical solution, when the bristles move circumferentially relative to the rocker arm, the bristles interfere with the upper end of the rocker arm, the rocker arm elastically deflects and forces the rubber strip to elastically shift around the axis of the metal mesh tube, and the rubber strip drives the first part of the filter cloth to shift around the axis of the metal mesh tube relative to the second part. In this process, the guide surface of the rocker arm also abuts against the end of the bristles, and the elastic force of the rocker arm is converted into an axial force along the bristles through the guide surface. This force will force the rubber strip to elastically bend along its own length, thereby forcing the second part to wrinkle relative to the axial direction of the metal mesh tube, further increasing the shaking amplitude of the second part, thereby improving the coal ash removal effect.

[0026] Optionally, a side opening is provided at one end of the recovery tank body, and a pull-out box with an opening facing upward is slidably provided in the recovery tank body.

[0027] By adopting the above technical solution, the coal ash dropped in the drop pipe will fall into the pull-out box. After the pull-out box has collected all the coal ash, the pull-out box can be slid to be taken out of the recovery tank through the side opening, which is convenient and quick.

[0028] Optionally, an anti-escape cover is fixed to the outer side cover of the discharging conveyor belt.

[0029] By adopting the above technical solution, the occurrence of coal ash leakage during the process of conveying crushed coal particles by the discharge conveyor belt can be reduced.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: By arranging an axial reciprocating component, a rotating drive component, a negative pressure pipe, a metal mesh cylinder, a receiving pipe and a recovery tank body, the metal mesh cylinder drives the filter mesh cloth and the brush bristles to rotate through friction to brush off the coal ash on the belt of the discharge conveyor belt, and because the negative pressure chamber continuously inhales air, the brushed-off coal ash will be quickly adsorbed on the surface of the filter mesh cloth, thereby reducing the diffusion pollution of the coal ash; and the axial reciprocating component drives the metal mesh cylinder to axially reciprocate to enter the receiving pipe, so that the part of the filter mesh cloth adsorbed with coal ash can enter the receiving pipe (at the same time, the part of the filter mesh cloth that is not adsorbed with coal ash enters the clean area from the receiving pipe to perform the adsorption action). At this time, the part of the filter mesh cloth located in the receiving pipe is not affected by negative pressure, and under the action of centrifugal force and gravity, the coal ash in this part will enter the recovery tank body through the drop pipe; By setting a positive pressure chamber, the positive pressure chamber is always located in the containing tube, and the soft blowing tube blows high-pressure gas into the airway, and the high-pressure gas enters the positive pressure chamber through the air outlet, and the high-pressure gas blows from the inside to the outside to the inner peripheral surface of the filter cloth, so as to recoil the coal ash from the filter cloth, and the coal ash enters the recovery tank through the drop pipe, thereby reducing the coal ash residue on the filter cloth to ensure the effectiveness of the next cleaning belt; By setting a swing rod that can be deflected by a spring sheet, a second part with greater friction and a first part with less friction, the swing rod is elastically deflected and forces the rubber strip to elastically shift around the axis of the metal mesh tube. The rubber strip drives the first part of the filter cloth to shift around the axis of the metal mesh tube relative to the second part, that is, the first part is twisted. At this time, the angle between the mesh of the first part and the mesh of the metal mesh tube changes, that is, the blowing angle of the high-pressure gas changes with the mesh of the first part, so that the first part can be recoiled from different angles, thereby improving the recoil effect of the coal ash and reducing the residue of stubborn coal ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a top view of the overall structure of Example 1.

[0032] Figure 2 It is a partial cross-sectional view of the discharge end of the discharge conveyor belt of Example 1.

[0033] Figure 3 This is a cross-sectional view of the metal mesh cylinder of Example 1.

[0034] Figure 4 It is a cross-sectional view of the cleaning device of Example 1 along the longitudinal section direction of the metal mesh cylinder.

[0035] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0036] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle.

[0037] Figure 7 yes Figure 4 A partial enlarged view of point C in the middle.

[0038] Figure 8 yes Figure 4 A partial enlarged view of point D in the middle.

[0039] Fig. 9 yes Figure 4 A partial enlarged view of point E in the middle.

[0040] Fig.10 It is a cross-sectional view of the cleaning device of Example 2 along the longitudinal section direction of the metal mesh cylinder.

[0041] Fig.11 It is a partial cross-sectional view of Example 2 for showing the position of the air outlet.

[0042] Fig.12 yes Fig.10 A partial enlarged view of point F in the middle.

[0043] Fig.13 It is a cross-sectional view of the cleaning device of Example 3 along the longitudinal section direction of the metal mesh cylinder.

[0044] Fig.14 yes Fig.13 A partial enlarged view of point G in the middle.

[0045] Fig.15 It is a cross-sectional view of the cleaning device of Example 4 along the longitudinal section direction of the metal mesh cylinder.

[0046] Fig.16 yes Fig.15 A partial enlarged view of point H in the middle.

[0047] Fig.17 This is a schematic diagram of Example 4 for showing the positional relationship between the bristles and the upper end of the swing rod.

[0048] Fig.18 It is a schematic diagram of Example 5 for demonstrating the matching relationship between the end of the bristle and the upper end of the swing rod.

[0049] Explanation of reference numerals: 1. metal mesh cylinder; 2. drop pipe; 3. negative pressure pipe; 10. cleaning area; 100. feed conveyor belt; 110. negative pressure chamber; 120. positive pressure chamber; 101. crushing device; 102. discharge conveyor belt; 1021. belt; 1022. anti-escape cover; 103. collecting barrel; 105. cleaning device; 11. filter cloth; 171. ring groove; 12. rubber strip; 13. brush; 15. end cover; 151. support rod; 16. anti-slip ring; 17. sealing disk; 18. sleeve Tube; 181, airway; 182, air outlet; 19, soft air blowing tube; 21, containing tube; 22, recovery tank; 221, side opening; 23, pull-out box; 25, inclined plate; 251, front baffle; 252, rear baffle; 26, through rod; 27, rocker rod; 271, guide surface; 28, torsion spring; 31, branch pipe; 311, air suction hole; 32, bar convex teeth; 33, rotary joint; 34, soft air suction tube; 51, first motor; 52, first gear; 53, second gear; 55, rack. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1 -Attached Fig.18 This application is described in further detail.

[0051] Example 1, Example 1 discloses a coal block crushing device for coal detection. Figure 1 and Figure 2 The coal block crushing equipment for coal detection includes a feed conveyor belt 100, a crushing device 101, a discharge conveyor belt 102, a collecting bucket 103 and a cleaning device 105, wherein the discharge end of the feed conveyor belt 100 is connected to the feed end of the crushing device 101, the discharge end of the crushing device 101 is connected to the feed end of the discharge conveyor belt 102, the discharge conveyor belt 102 is a belt conveyor belt, the discharge end of the discharge conveyor belt 102 is higher than the feed end of the discharge conveyor belt 102, and the collecting bucket 103 is located directly below the discharge end of the discharge conveyor belt 102 to receive the crushed coal particles.

[0052] In addition, an anti-escape cover 1022 may be fixedly provided on the outer side of the discharge conveyor belt 102 to reduce the occurrence of coal ash escaping during the process of the discharge conveyor belt 102 conveying the crushed coal particles.

[0053] like Figure 2 , Figure 3 , Figure 4 As shown, the cleaning device 105 is used to clean the fly ash on the surface of the belt 1021 of the discharge conveyor belt 102. Specifically, the cleaning device 105 includes an axial reciprocating motion component, a rotating drive component, a negative pressure pipe 3, a metal mesh tube 1 and two vertically arranged drop pipes 2.

[0054] Both drop tubes 2 are located below the discharge conveyor belt 102, and the two drop tubes 2 are symmetrically arranged with the discharge conveyor belt 102 as the center. A receiving tube 21 is fixed to the upper end of the drop tube 2, and the receiving tube 21 is connected to the drop tube 2. The axis of the receiving tube 21 extends along the width direction of the discharge conveyor belt 102. The area between the two receiving tubes 21 is set as a clean area 10. The clean area 10 is located directly below the discharge conveyor belt 102, and one end of the receiving tube 21 facing the clean area 10 is open, and the other end of the receiving tube 21 is closed.

[0055] An inclined plate 25 is fixed at the openings of the two containing tubes 21. The inclined plate 25 is located directly below the cleaning area 10. A vertically arranged front baffle 251 and a rear baffle 252 are fixed on both sides of the width direction of the inclined plate 25. The front baffle 251 is lower than the rear baffle 252, and the front baffle 251 is closer to the material receiving barrel 103 than the rear baffle 252.

[0056] The lower ends of the two drop tubes 2 are commonly connected with a strip-shaped recovery tank 22 , that is, the drop tubes 2 are connected with the recovery tank 22 , one end of the recovery tank 22 is provided with a side opening 221 , and a pull-out box 23 with an opening facing upward is slidably provided in the recovery tank 22 .

[0057] like Figure 3 , Figure 5 , Figure 6 As shown, the metal mesh cylinder 1 extends along the width direction of the discharge conveyor belt 102, the metal mesh cylinder 1 is coaxially arranged with the containing tube 21, the length of the metal mesh cylinder 1 is greater than twice the width of the discharge conveyor belt 102, the outer circumference of the metal mesh cylinder 1 is sleeved with a filter mesh cloth 11, the filter mesh cloth 11 is cylindrical, the inner circumference of the filter mesh cloth 11 is attached to the outer circumference of the metal mesh cylinder 1, and a plurality of rubber strips 12 are bonded to the surface of the filter mesh cloth 11, the rubber strips 12 extend along the axial direction of the filter mesh cloth 11, and each rubber strip 12 is evenly arranged along the circumference of the filter mesh cloth 11, and the surface of the rubber strip 12 is provided with bristles 13, and the bristles 13 abut against the belt 1021 of the discharge conveyor belt 102. In addition, end caps 15 are fixed at both ends of the metal mesh cylinder 1 to block the ends of the metal mesh cylinder 1.

[0058] Secondly, an anti-slip ring 16 is coaxially fixed to the end of the outer peripheral surface of the metal mesh tube 1 , and the two ends of the rubber strip 12 are respectively abutted against the anti-slip rings 16 on both sides. The anti-slip rings 16 are used to limit the axial movement of the rubber strip 12 .

[0059] like Figure 4 , Figure 6As shown, the accommodating tube 21 is fixed with two sealing disks 17 located in the metal mesh tube 1, specifically, the closed end of the accommodating tube 21 is fixed with a sleeve 18, the sleeve 18 is coaxially arranged with the metal mesh tube 1, the sleeve 18 passes through the end cover 15 to enter the inner cavity of the metal mesh tube 1, the sealing disk 17 is made of rubber material, the disk surface of the sealing disk 17 is provided with an annular groove 171, the port of the sleeve 18 cooperates with the annular groove 171, so that the sealing disk 17 and the sleeve 18 coaxially rotate and cooperate, the outer peripheral surface of the sealing disk 17 is attached to the inner peripheral surface of the metal mesh tube 1, that is, the sealing disk 17 will separate the inner cavity of the metal mesh tube 1, and the chamber of the metal mesh tube 1 located in the two sealing disks 17 is set as a negative pressure chamber 110, the length of the negative pressure chamber 110 is equal to the width of the discharge conveyor belt 102, and the negative pressure chamber 110 is located in the cleaning area 10.

[0060] like Figure 4 , Figure 7 , Figure 8 As shown, the negative pressure tube 3 is a circular tube, which is coaxially arranged with the metal mesh tube 1. The negative pressure tube 3 passes through the closed end of the accommodating tube 21, the sleeve 18 and the sealing disk 17 in sequence. The negative pressure tube 3 can rotate or slide axially relative to the accommodating tube 21. The middle part of the negative pressure tube 3 is located in the negative pressure cavity 110. A branch tube 31 is fixed to the middle part of the negative pressure tube 3. The negative pressure tube 3 is connected with the branch tube 31. The branch tube 31 is fixedly connected to the inner wall of the metal mesh tube 1, that is, the negative pressure tube 3 is fixed to the metal mesh tube 1, and the branch tube 31 is provided with a plurality of suction holes 311, that is, the negative pressure tube 3 is connected with the negative pressure cavity 110 through the branch tube 31.

[0061] One end of the negative pressure tube 3 is closed, and the other end of the negative pressure tube 3 has an opening. The open end of the negative pressure tube 3 is located on the outside of the accommodating tube 21. The open end of the negative pressure tube 3 is provided with a rotating joint 33 and a soft suction tube 34. The soft suction tube 34 can be externally connected to an air pump (not shown in the figure).

[0062] like Figure 8 As shown, the rotation drive assembly is used to drive the negative pressure tube 3 and the metal mesh tube 1 to rotate. Specifically, the rotation drive assembly includes a first motor 51 and a first gear 52. The outer peripheral surface of the negative pressure tube 3 is protruding with a strip-shaped convex tooth 32. The strip-shaped convex tooth 32 extends axially along the negative pressure tube 3. Each strip-shaped convex tooth 32 is evenly arranged around the circumference, so that the outer peripheral surface of the negative pressure tube 3 is in the shape of a gear shaft. The first motor 51 is installed on the outside of the drop tube 2, and the first gear 52 is installed on the output shaft of the first motor 51. The first gear 52 is meshed with the strip-shaped convex tooth 32, so that the torque of the first motor 51 is transmitted to the negative pressure tube 3 to drive the metal mesh tube 1 and the filter cloth to rotate.

[0063] like Fig. 9As shown, the axial reciprocating motion component is used to drive the metal mesh cylinder 1 to move axially reciprocatingly to enter the cleaning area 10 or the containing tube 21. The axial reciprocating motion can be continuous, that is, during the rotation of the metal mesh cylinder 1, the axial reciprocating motion component continuously drives the metal mesh cylinder 1 to move axially reciprocatingly. The axial reciprocating motion can also be intermittent, that is, during the rotation of the metal mesh cylinder 1, the axial reciprocating motion component first drives the metal mesh cylinder 1 to a position and then stays for a period of time, and then drives the metal mesh cylinder 1 to move to the next axial position.

[0064] It should be noted that since the sealing disk 17 is fixed to the containing tube 21, when the metal mesh tube 1 and the filter cloth 11 move axially, the two will move axially relative to the sealing disk 17, so that the negative pressure chamber 110 is always located in the clean area 10, thereby ensuring that the portion of the filter cloth 11 located in the containing tube 21 does not contact the negative pressure chamber 110, that is, the coal ash in this portion is relatively loose and easy to fall off into the drop pipe 2, thereby ensuring the clean recovery effect of the coal ash.

[0065] Specifically, the axial reciprocating movement component includes a second motor, a second gear 53 and a rack 55. The cross-section of the rack 55 is square. The length direction of the rack 55 is the axial direction of the negative pressure tube 3. The rack 55 passes through the hole opened at the closed end of the accommodating tube 21. The hole is square, so that the rack 55 is axially slidingly connected to the accommodating tube 21 and ensures that the rack 55 cannot rotate on its own, thereby ensuring that the tooth surface of the rack 55 is always facing downward; one end of the rack 55 is rotatably connected to the closed end of the negative pressure tube 3, that is, the rotational movement of the negative pressure tube 3 cannot affect the rack 55, and the sliding of the rack 55 will drive the negative pressure tube 3 to move axially.

[0066] The second motor is installed on the outside of the drop tube 2 (not shown in the drawing), and the second gear 53 is installed on the output shaft of the second motor. The second gear 53 is meshed with the rack 55, that is, the positive and negative rotation of the second motor can drive the negative pressure tube 3 to move axially back and forth.

[0067] During cleaning, the negative pressure tube 3 starts to inhale air, causing the negative pressure chamber 110 to generate negative pressure. Under the action of negative pressure, the portion of the filter cloth 11 located in the negative pressure chamber 110 is more closely attached to the metal mesh cylinder 1, and the friction between the two increases. The rotating drive assembly drives the metal mesh cylinder 1 to rotate, and the metal mesh cylinder 1 drives the filter cloth 11 and the bristles 13 to rotate through the friction force, so as to brush off the coal ash on the belt 1021 of the discharge conveyor belt 102, and because the negative pressure chamber 110 continuously inhales air, the brushed-off coal ash will be quickly adsorbed on the surface of the filter cloth 11, thereby reducing the diffusion pollution of the coal ash.

[0068] At the same time, the axial reciprocating assembly drives the metal mesh tube 1 to move axially and reciprocatingly to enter one of the receiving tubes 21, so that the part of the filter mesh cloth 11 that is full of coal ash enters the receiving tube 21 from the clean area 10 (at the same time, the part of the filter mesh cloth 11 that is not adsorbed with coal ash enters the negative pressure chamber 110 and the clean area 10 from the other receiving tube 21 to perform the adsorption action). At this time, the part of the filter mesh cloth 11 located in the receiving tube 21 is not subjected to negative pressure. Under the action of centrifugal force and gravity, the coal ash in this part will enter the pull-out box 23 in the recovery tank body 22 through the drop pipe 2. After the pull-out box 23 has been collected, the pull-out box 23 can be taken out of the recovery tank body 22 through the side opening 221 by sliding the pull-out box 23, which is convenient and quick.

[0069] Embodiment 2, embodiment 2 is different from embodiment 1 in that, Fig.10 , Fig.11 , Fig.12 As shown, the area of ​​the inner cavity of the metal mesh tube 1 between the end cover 15 and the sealing disk 17 is set as a positive pressure chamber 120, an air channel 181 is opened in the sleeve 18, an air outlet hole 182 is provided at one end of the air channel 181, the air outlet hole 182 is connected to the positive pressure chamber 120, and the other end of the air channel 181 is connected to a soft blowing pipe 19, the soft blowing pipe 19 is fixedly connected to the closed end of the containing tube 21, and the soft blowing pipe 19 is connected to an air pump (not shown in the figure).

[0070] When the part of the filter mesh cloth 11 that absorbs the coal ash moves axially into the containing tube 21, since the positive pressure chamber 120 is always located in the containing tube 21, the soft blowing pipe 19 blows high-pressure gas into the airway 181, and the high-pressure gas enters the positive pressure chamber 120 through the air outlet 182. The high-pressure gas is blown from the inside to the outside to the inner circumference of the filter mesh cloth 11 to recoil the coal ash from the filter mesh cloth 11, and the coal ash enters the recovery tank 22 through the drop pipe 2, thereby reducing the coal ash residue on the filter mesh cloth 11 to ensure the effectiveness of the next cleaning belt 1021.

[0071] Embodiment 3, embodiment 3 is different from embodiment 2 in that, Fig.13 , Fig.14 As shown, the end cover 15 is separately arranged from the metal mesh tube 1, specifically, the end cover 15 is fixed to the containing tube 21 by the support rod 151, and the outer circumference of the end cover 15 is in contact with the inner circumference of the metal mesh tube 1, that is, when the metal mesh tube 1 moves axially, the end cover 15 remains stationary, and because the end cover 15 and the sealing disk 17 are relatively fixed to the containing tube 21, the distance between the end cover 15 and the sealing disk 17 is fixed, that is, the volume and air pressure of the positive pressure chamber 120 are constant, thereby ensuring that when the filter mesh cloth 11 moves axially and passes through the positive pressure chamber 120, the high-pressure gas in the positive pressure chamber 120 will evenly act on the coal ash of the filter mesh cloth 11, thereby improving the recoil effect on the coal ash.

[0072] Embodiment 4, embodiment 4 is different from embodiment 2 in that, Fig.15 , Fig.16 , Fig.17 As shown, the two drop tubes 2 are both fixed with a through rod 26, the length direction of the through rod 26 is parallel to the axial direction of the metal mesh tube 1, the through rod 26 is rotatably connected to a rocker rod 27, the rotation plane of the rocker rod 27 is the radial plane of the metal mesh tube 1, and a torsion spring 28 is provided between the through rod 26 and the rocker rod 27, and the elastic force of the torsion spring 28 is used to keep the rocker rod 27 in a vertical state.

[0073] When the end of the metal mesh tube 1 moves axially to a position of the accommodating tube 21 away from the clean area 10, that is, the portion of the filter mesh cloth 11 that is fully adsorbed with coal ash completely enters the accommodating tube 21 and the negative pressure chamber 110, this portion of the filter mesh cloth 11 is set as the first portion, and the portion of the filter mesh cloth 11 that is not adsorbed with coal ash completely enters the clean area 10 and the positive pressure chamber 120, and this portion is set as the second portion. Due to the negative pressure, the second portion is more closely attached to the metal mesh tube 1, and the friction is greater, so the second portion is not easy to deflect relative to the metal mesh tube 1. Due to the positive pressure, the friction between the first portion and the metal mesh tube 1 is smaller, and the first portion is easier to deflect relative to the metal mesh tube 1.

[0074] When the end of the metal mesh tube 1 moves axially to a position of the accommodating tube 21 away from the cleaning area 10, the upper end of the rocker arm 27 is located between two adjacent bristles 13. When the bristles 13 move circumferentially relative to the rocker arm 27, the bristles 13 interfere with the upper end of the rocker arm 27. The rocker arm 27 elastically deflects and forces the rubber strip 12 corresponding to the bristles 13 to elastically shift around the axis of the metal mesh tube 1. The rubber strip 12 drives the first part of the filter cloth 11 to shift around the axis of the metal mesh tube 1 relative to the second part, that is, the first part is twisted. At this time, the angle between the mesh of the first part and the mesh of the metal mesh tube 1 changes, that is, the blowing angle of the high-pressure gas changes with the mesh of the first part, so that the first part can be recoiled from different angles, thereby improving the recoil effect of the fly ash and reducing the residue of stubborn fly ash.

[0075] Secondly, when the rubber strip 12 is elastically reset, the first portion is reset, so during the rotation of the metal mesh tube 1, the first portion is continuously twisted and reset to generate vibration, thereby shaking off the coal ash more quickly.

[0076] Embodiment 5, embodiment 5 is different from embodiment 4 in that, Fig.18 As shown, the upper end of the rocker rod 27 has a guide surface 271 .

[0077] When the bristles 13 move circumferentially relative to the rocker arm 27, the bristles 13 interfere with the upper end of the rocker arm 27, the rocker arm 27 elastically deflects and forces the rubber strip 12 to elastically shift around the axis of the metal mesh tube 1, and the rubber strip 12 drives the first part of the filter cloth 11 to shift around the axis of the metal mesh tube 1 relative to the second part. During this process, the guide surface 271 of the rocker arm 27 also abuts against the end of the bristles 13, and the elastic force of the rocker arm 27 is converted into an axial force of the bristles 13 through the guide surface 271. This force will force the rubber strip 12 to elastically bend along its own length direction, thereby forcing the second part to wrinkle axially relative to the metal mesh tube 1, further increasing the shaking amplitude of the second part, thereby improving the coal ash removal effect.

[0078] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal block crushing device for coal detection, characterized in that: The invention comprises a feed conveyor belt (100), a crushing device (101), a discharge conveyor belt (102) and a cleaning device (105), wherein the discharge end of the feed conveyor belt (100) is connected to the feed end of the crushing device (101), the discharge end of the crushing device (101) is connected to the feed end of the discharge conveyor belt (102), and the cleaning device (105) is used to clean the coal ash on the surface of the belt (1021) of the discharge conveyor belt (102); the cleaning device (105) comprises an axial reciprocating component, a rotary The invention relates to a mechanical driving assembly, a negative pressure pipe (3), a metal mesh cylinder (1) and two vertically arranged drop pipes (2), wherein the metal mesh cylinder (1) extends along the width direction of the discharge conveyor belt (102), the length of the metal mesh cylinder (1) is greater than twice the width of the discharge conveyor belt (102), a filter mesh cloth (11) is sleeved on the outer circumference of the metal mesh cylinder (1), a plurality of circumferentially evenly arranged rubber strips (12) are bonded to the surface of the filter mesh cloth (11), and bristles (13) are provided on the surface of the rubber strips (12). An anti-slip ring (16) for limiting the axial movement of the rubber strip (12) is coaxially fixed to the end of the peripheral surface; the upper ends of the drop tubes (2) are fixedly connected to a receiving tube (21) coaxially arranged with the metal mesh tube (1); the lower ends of the two drop tubes (2) are commonly connected to a recovery tank (22); the area between the two receiving tubes (21) is set as a cleaning area (10); the receiving tube (21) is fixed with two sealing disks (17) located in the metal mesh tube (1); the metal mesh tube (1) is located between the two sealing disks (17) ) is set as a negative pressure chamber (110), the length of the negative pressure chamber (110) is equal to the width of the discharge conveyor belt (102), the negative pressure chamber (110) is located in the clean area (10), the negative pressure pipe (3) is fixedly connected to the metal mesh cylinder (1), and the negative pressure pipe (3) is connected to the negative pressure chamber (110); the rotation drive component is used to drive the metal mesh cylinder (1) to rotate, and the axial reciprocating movement component is used to drive the metal mesh cylinder (1) to axially reciprocate so as to enter the clean area (10) or the containing tube (21).

2. The coal block crushing equipment for coal detection according to claim 1 is characterized in that: The rotation drive assembly comprises a first motor (51) and a first gear (52); the negative pressure tube (3) is rotationally connected to the containing tube (21); the negative pressure tube (3) is coaxially arranged with the metal mesh tube (1); one end of the negative pressure tube (3) is closed, and the other end of the negative pressure tube (3) has an opening; the open end of the negative pressure tube (3) is provided with a rotating joint (33) and a soft suction tube (34); the negative pressure tube (3) passes through the sealing disk (17); a branch tube (31) is fixed in the middle of the negative pressure tube (3); and the branch tube (31) is provided with a rotating joint (33) and a soft suction tube (34). 1) is located in the negative pressure chamber (110), the branch pipe (31) is fixedly connected to the inner wall of the metal mesh tube (1), and the branch pipe (31) is provided with a plurality of air suction holes (311); the outer peripheral surface of the negative pressure tube (3) is protruding with a strip-shaped convex tooth (32), and the strip-shaped convex tooth (32) extends axially along the negative pressure tube (3); the first motor (51) is installed on the drop tube (2), and the first gear (52) is installed on the output shaft of the first motor (51), and the first gear (52) is meshed with the strip-shaped convex tooth (32).

3. The coal block crushing equipment for coal detection according to claim 2 is characterized in that: The axial reciprocating motion assembly comprises a second motor, a second gear (53) and a rack (55); the cross section of the rack (55) is square; the rack (55) is axially slidingly connected to the containing tube (21); one end of the rack (55) is rotationally connected to the end of the negative pressure tube (3); the second motor is mounted on the drop tube (2); the second gear (53) is mounted on the output shaft of the second motor; and the second gear (53) is meshed with the rack (55).

4. The coal block crushing equipment for coal detection according to claim 1 is characterized in that: End covers (15) are fixed at both ends of the metal mesh tube (1), and the area of ​​the inner cavity of the metal mesh tube (1) between the end covers (15) and the sealing disk (17) is set as a positive pressure chamber (120). A sleeve (18) is fixed in the accommodating tube (21), and the sleeve (18) is sleeved on the negative pressure tube (3). The sleeve (18) is passed through the end covers (15), and the end of the sleeve (18) is coaxially rotatably connected with the disk surface of the sealing disk (17); an airway (181) is opened in the sleeve (18), and an air outlet (182) is provided at one end of the airway (181), and the air outlet (182) is communicated with the positive pressure chamber (120), and the other end of the airway (181) is connected to a soft blowing tube (19).

5. The coal block crushing equipment for coal detection according to claim 1 is characterized in that: The accommodating tube (21) is fixed with two end covers (15) via a support rod (151); the outer circumference of the end covers (15) is in contact with the inner circumference of the metal mesh tube (1); the area of ​​the inner cavity of the metal mesh tube (1) between the end covers (15) and the sealing disk (17) is set as a positive pressure chamber (120); a sleeve (18) is fixed inside the accommodating tube (21); the sleeve (18) is sleeved on the negative pressure tube (3); the sleeve (18) is passed through the end covers (15); the end of the sleeve (18) is coaxially rotatably connected with the disk surface of the sealing disk (17); an airway (181) is opened inside the sleeve (18); an air outlet (182) is provided at one end of the airway (181); the air outlet (182) is communicated with the positive pressure chamber (120); the other end of the airway (181) is connected with a soft blowing tube (19).

6. The coal block crushing device for coal detection according to claim 4 is characterized in that: The two drop tubes (2) are both fixed with a through rod (26), the through rod (26) is rotatably connected to a swing rod (27), and a torsion spring (28) is provided between the through rod (26) and the swing rod (27); when the end of the metal mesh tube (1) moves axially to a position of the accommodating tube (21) away from the cleaning area (10), the upper end of the swing rod (27) is located between two adjacent bristles (13), and when the bristles (13) move circumferentially relative to the swing rod (27), the swing rod (27) elastically deflects and forces the rubber strip (12) to elastically deflect around the axis of the metal mesh tube (1).

7. The coal block crushing device for coal detection according to claim 6, characterized in that: The upper end of the swing rod (27) is provided with a guide surface (271), and the guide surface (271) is used for the end of the bristle (13) to abut against so as to force the rubber strip (12) to bend elastically along its own length direction.

8. The coal block crushing equipment for coal detection according to claim 1, characterized in that: One end of the recovery tank body (22) is provided with a side opening (221), and a drawer box (23) with an opening facing upward is slidably provided in the recovery tank body (22).

9. The coal block crushing equipment for coal detection according to claim 1, characterized in that: An anti-escape cover (1022) is fixedly arranged on the outer side cover of the discharge conveyor belt (102).

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