CN106733642B

CN106733642B - Jet classifying device

Info

Publication number: CN106733642B
Application number: CN201611075329.XA
Authority: CN
Inventors: 周利虎; 刘宇杰; 宋军
Original assignee: Demeter Suzhou Electronics Environmental Materials Co ltd
Current assignee: Demeter Suzhou Electronics Environmental Materials Co ltd
Priority date: 2016-11-29
Filing date: 2016-11-29
Publication date: 2023-09-19
Anticipated expiration: 2036-11-29
Also published as: CN106733642A

Abstract

The invention relates to a jet classifying device. Jet classification device includes inlet unit, classifying box, collection subassembly and removal subassembly, inlet unit includes intake pipe and feeder hopper, classifying box includes box and two coanda blocks, be formed with guide clearance between two coanda blocks, the bottom of box is spaced apart and is equipped with a plurality of discharge gates, collection subassembly includes main air current pipe and a plurality of laval pipe, a plurality of laval pipe with a plurality of discharge gates one-to-one intercommunication, the one end of laval pipe is connected with the cloth bag dust collector. The movable assembly comprises a plurality of support rods and an annular support bar, two racks are convexly arranged on the annular support bar, two groups of gears are arranged at the bottom edge of the box body, and the two groups of gears are oppositely arranged and respectively meshed with the two racks. The air inlet pipe of the jet flow grading device is not easy to block, and the grading box is convenient to move.

Description

Jet classifying device

Technical Field

The invention relates to a jet classifying device.

Background

Jet classifiers are a type of dry air classifier, also known as static classifiers or inertial classifiers, which are distinguished from air classifiers that typically have rotating parts, and which do not have any moving parts within their body, the principle of which derives from the well known Coanda Effect. So is also called a coanda jet classifier. The micro powder material is scattered under the action of high-pressure gas and then enters the jet classifier body, fine particles cling to the coanda block under the action of coanda effect, the middle particles are positioned at the middle part, and the large particles are far away from the coanda block. Thus, the micro powder particles are instantaneously divided into fine, middle and coarse three stages. The dust is recovered separately in the downstream hoppers. The general jet classifier comprises a feed hopper and an air inlet pipe, wherein the air inlet pipe is vertically arranged on the air inlet pipe. However, when powder is poured into the air intake pipe in large quantity from the hopper, clogging is liable to occur. In addition, because the jet grader is generally fixed to a frame, it is inconvenient to move.

Disclosure of Invention

Based on the above, it is necessary to provide a jet classifying device which is not easy to block an air inlet pipe and is convenient to move.

A jet classification device, comprising: the device comprises an air inlet assembly, a grading box, a collecting assembly and a moving assembly, wherein the air inlet assembly comprises an air inlet pipe and a feeding hopper arranged on the air inlet pipe, the feeding hopper is obliquely arranged relative to the air inlet pipe, the grading box comprises a box body and two coanda blocks arranged in the box body, a guide gap is formed between the two coanda blocks, the air inlet pipe penetrates through the side wall of the box body and is communicated with the guide gap, a plurality of discharge holes are formed in the bottom of the box body at intervals, the collecting assembly comprises a main air flow pipe and a plurality of Laval pipes arranged on the main air flow pipe, the Laval pipes are communicated with the discharge holes in a one-to-one correspondence manner, and one end of each Laval pipe is connected with a bag dust collector; the movable assembly comprises a plurality of support rods and annular support bars arranged on the support rods, two racks are convexly arranged on the annular support bars, the two racks are parallel to each other and are arranged at intervals, two groups of gears are arranged at the bottom edge of the box body, and the two groups of gears are oppositely arranged and respectively meshed with the two racks.

In one embodiment, the collection assembly further comprises an air compressor connected to the main air flow duct.

In one embodiment, a connecting hole is formed in the side wall of the box body, the connecting hole is communicated with the guide gap, and the end portion of the air inlet pipe is arranged in the connecting hole.

In one embodiment, the collecting assembly further comprises a plurality of connecting pipes, the connecting pipes are connected to the plurality of Laval pipes in a one-to-one correspondence manner, and the bag dust collector is connected to the end portion, away from the Laval pipes, of the connecting pipes.

In one embodiment, the collecting assembly further comprises a plurality of collecting pipes, the collecting pipes are communicated with the plurality of discharge ports in a one-to-one correspondence manner, and one ends, far away from the discharge ports, of the collecting pipes are connected to the connecting pipes.

In one embodiment, the collecting assembly further comprises a moving plate, a plurality of connecting ports are arranged on the moving plate at intervals, the connecting ports are communicated with the discharging ports in a one-to-one correspondence mode, and the end portion of each collecting pipe is fixed to the periphery of the corresponding connecting port.

In one embodiment, the moving plate is slidably disposed at the bottom of the case.

In one embodiment, the width of the moving plate is smaller than the distance between the two racks.

In one embodiment, two clamping strips are convexly arranged at the bottom of the box body, clamping grooves are formed in the clamping strips, and two sides of the moving sheet are respectively contained in the two clamping grooves.

In one embodiment, an elastic pull rope is arranged on the annular support bar, and one end of the elastic pull rope is connected to the edge of the moving plate.

Because the feeder hopper is inclined relative to the air inlet pipe and is not perpendicular to the air inlet pipe, the blockage caused by the fact that powder material is poured into the air inlet pipe in a large quantity can be reduced relatively, and the blockage probability of the feeding pipe is reduced. The Laval pipe can form negative pressure, so that the negative pressure is utilized to absorb all levels of powder at the positions of the discharge ports, and the automatic collection of the multi-level powder is facilitated. Because the two groups of gears are respectively meshed with the two racks, the two groups of gears are driven to rotate on the two racks through the box body, and the movement of the box body can be realized. And because the two sets of gears are meshed with the two racks, certain retarding force can be generated, and the box body can be prevented from moving due to accidental collision.

Drawings

FIG. 1 is a top view of a jet fractionation device according to an embodiment.

FIG. 2 is a side view of a jet classification device according to an embodiment.

Fig. 3 is an end view of a classification box according to an embodiment.

FIG. 4 is a schematic diagram of an air intake assembly and a vibration assembly according to an embodiment.

Fig. 5 is a partial view of the inner side wall of the case of an embodiment.

Fig. 6 is a side view of a feed assembly, a classification box, and an adjustment mechanism of an embodiment.

FIG. 7 is a partial cross-sectional view of a cleaning assembly and a bottom of a classification box according to an embodiment.

FIG. 8 is a schematic diagram of a release block according to an embodiment.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.

The invention relates to a jet classifying device. The jet classification device comprises: the device comprises an air inlet assembly, a grading box, a collecting assembly and a moving assembly, wherein the air inlet assembly comprises an air inlet pipe and a feeding hopper arranged on the air inlet pipe, and the feeding hopper is obliquely arranged relative to the air inlet pipe. For example, the classifying box comprises a box body and two coanda blocks arranged in the box body, a guide gap is formed between the two coanda blocks, the air inlet pipe penetrates through the side wall of the box body and is communicated with the guide gap, and a plurality of discharge holes are formed in the bottom of the box body at intervals. For example, the collection assembly comprises a main gas flow pipe and a plurality of Laval pipes arranged on the main gas flow pipe, wherein the Laval pipes are communicated with the discharge ports in a one-to-one correspondence manner, and one end of each Laval pipe is connected with a cloth bag dust collector. For example, the moving assembly comprises a plurality of support rods and annular support rods arranged on the support rods, two racks are convexly arranged on the annular support rods, and the two racks are parallel to each other and are arranged at intervals. For example, two sets of gears are arranged at the bottom edge of the box body, and the two sets of gears are oppositely arranged and respectively meshed with the two racks.

Referring to fig. 1 and 2, a jet classifying device 100 includes an air inlet assembly 10, a classifying box 20 and a collecting assembly 30, wherein the air inlet assembly includes an air inlet pipe 11 and a feed hopper 13 disposed on the air inlet pipe, the feed hopper is disposed obliquely with respect to the air inlet pipe, the classifying box includes a box body 21 and two coanda blocks 23 disposed in the box body, a guiding gap 231 is formed between the two coanda blocks, the air inlet pipe penetrates through a side wall of the box body and is communicated with the guiding gap, a plurality of discharge holes 25 are spaced apart from the bottom of the box body, the collecting assembly includes a main air flow pipe 31 and a plurality of laval pipes 33 disposed on the main air flow pipe, the laval pipes are in one-to-one correspondence with the discharge holes, i.e. each laval pipe is in correspondence with a discharge hole, and one end of each laval pipe is connected with a bag dust collector 35.

Because the feeder hopper is inclined relative to the air inlet pipe and is not perpendicular to the air inlet pipe, the blockage caused by the fact that powder material is poured into the air inlet pipe in a large quantity can be reduced relatively, and the blockage probability of the feeding pipe is reduced. The Laval pipe can form negative pressure, so that the negative pressure is utilized to absorb all levels of powder at the positions of the discharge ports, and the automatic collection of the multi-level powder is facilitated.

For example, in order to facilitate the movement of the case, the jet classifying device further comprises a moving assembly 40 including a plurality of support bars 41 and an annular support bar 42 provided on the plurality of support bars, that is, the moving assembly includes an annular support bar and a plurality of support bars, each support bar being connected to the annular support bar; the annular support bar is convexly provided with two racks 43, the two racks are parallel to each other and are arranged at intervals, the bottom edge of the box body is provided with two groups of gears 26, and the two groups of gears are oppositely arranged and respectively meshed with the two racks. Because the two groups of gears are respectively meshed with the two racks, the two groups of gears are driven to rotate on the two racks through the box body, and the movement of the box body can be realized. And because the two sets of gears are meshed with the two racks, certain retarding force can be generated, and the box body can be prevented from moving due to accidental collision.

For example, to facilitate adjustment of the type of different sized powder collected by the bag house, the collection assembly further includes an air compressor 37 connected to the main air flow tube. The side wall of the box body is provided with a connecting hole, the connecting hole is communicated with the guide gap, and the end part of the air inlet pipe is arranged in the connecting hole. The collection assembly further includes a plurality of connection tubes 32 connected to the plurality of laval tubes in a one-to-one correspondence, and the bag house is connected to an end of the connection tube remote from the laval tubes. The collecting assembly further comprises a plurality of collecting pipes 34, the collecting pipes are communicated with the discharging ports in a one-to-one correspondence mode, and one ends, away from the discharging ports, of the collecting pipes are connected to the connecting pipes. Referring to fig. 3, the collecting assembly further includes a moving plate 36, on which a plurality of connection ports are spaced apart, the connection ports are in one-to-one correspondence with the discharge ports, and an end of each collecting tube is fixed on a periphery of the corresponding connection port. The moving piece is arranged at the bottom of the box body in a sliding manner. The width of the moving piece is smaller than the distance between the two racks. Two clamping strips 27 are convexly arranged at the bottom of the box body, clamping grooves are formed in the clamping strips, and two sides of the moving piece are respectively contained in the two clamping grooves. An elastic pull rope is arranged on the annular support bar, and one end of the elastic pull rope is connected to the edge of the movable piece. For example, when the pressure of the compressed air in the air inlet pipe is adjusted, the jet classifying device changes the initial three-stage division of the powder into two stages, so that a cloth bag collector is not needed at the discharge port of the third stage, and the movable sheet can be moved, so that the cloth bag collector corresponds to different discharge ports, and dust of different grades is collected.

Referring to fig. 4, for example, in order to further avoid blockage of the feeding hopper, the feeding hopper is provided with a vibration assembly 50, the vibration assembly includes a vibration member 51, a connecting rod 53 and a collar 55, the collar is sleeved on the feeding hopper, two ends of the connecting rod are respectively connected to the vibration member and the collar, the feeding hopper is connected with the air inlet pipe through a hose, and an axis of the feeding hopper is obliquely arranged with an axis of the air inlet pipe. The vibration piece drives the lantern ring to vibrate through the connecting rod, the lantern ring pulls the feeder hopper vibrates, so that accumulation and aggregation of powder in the feeder hopper can be avoided, the powder is dispersed and falls into the air inlet pipe, and the powder is driven into the classifying box by the air inlet pipe. For example, the connecting rod protrudes from one side of the collar and abuts against the feeding hopper, and the vibrating piece can further knock or reciprocally push the feeding hopper by using the connecting rod, so as to enhance the vibrating effect.

For example, in order to smoothly enter the powder in the hopper into the air inlet pipe, the hopper is cone-shaped. The inboard stack of feeder hopper is provided with basic unit and increases smooth layer. The thickness of the base layer is greater than that of the slip layer. The thickness of the slip layer is 1-2.5 mm. The thickness of the slip layer gradually increases in a direction toward the intake pipe. The inner side of the lantern ring side is provided with a rubber layer. The thickness of the rubber layer is 2-3 mm. The sliding layer is arranged on the inner side of the feeding hopper, so that the sliding smoothness of the powder can be improved. And the rubber layer on the inner side of the lantern ring can prevent the rigid collision of the vibrating piece to the feeding hopper.

Referring to fig. 5, for example, in order to adjust the classification specification of the powder, a strip-shaped hole is formed in the side wall of the box body, a plurality of positioning posts 211 are respectively disposed on two sides of the guiding gap, an adjusting plate 212 is further disposed on the side wall of the box body, a plurality of positioning slots 213 are respectively formed on two sides of the adjusting plate, the positioning posts are adjustably clamped in the positioning slots, and the end portion of the air inlet pipe is fixedly arranged on the adjusting plate in a penetrating manner and is communicated with the guiding gap. Through removing the fin, make the reference column card goes into in the adjacent constant head tank, thereby can realize the removal of fin, and then the adjustment the intake pipe with hierarchical looks inclination, thereby can adjust the drift distance of different kinds of powder, make it fall into in the discharge gate that corresponds, make the application scope of jet classification device is wider.

For example, in order to make the adjusting piece hug closely on the lateral wall of the box, a plurality of accommodating holes are concavely arranged on the lateral wall of the box, a plurality of elastic pull-holding pieces are arranged on the adjusting piece, and the end parts of the plurality of elastic pull-holding pieces are fixed in the plurality of accommodating holes in a one-to-one correspondence manner. The adjusting piece is convexly provided with a plurality of elastic columns, and the plurality of elastic pull-holding pieces are respectively connected to the plurality of elastic columns. The adjusting piece is provided with a vent hole in a penetrating mode, the position of the vent hole corresponds to the middle of the strip-shaped hole, and the air inlet pipe is connected into the vent hole. The side wall of the box body is further provided with an annular sealing groove, the sealing groove surrounds the strip-shaped hole, two sealing strips are convexly arranged on the adjusting piece, and the two sealing strips are clamped in the sealing groove. The plurality of positioning posts are disposed around the periphery of the seal groove. The plurality of containing holes are located between the sealing groove and the plurality of positioning columns. The adjusting piece is a strip-shaped piece, and the size of the adjusting piece is larger than that of the strip-shaped hole. Because the adjusting sheet is provided with a plurality of elastic pulling and holding pieces, the plurality of elastic pulling and holding pieces can pull and hold the adjusting sheet to be attached to the inner side wall of the box body. And when the height of the end part of the air inlet pipe needs to be adjusted, the height can be achieved by pulling the adjusting piece to move up and down. When the adjusting sheet is pulled, the elastic pull-holding pieces are stretched, and then the positioning columns are aligned to the adjacent positioning grooves. Finally, the adjusting sheet is released, and the plurality of elastic pull-holding pieces drive the adjusting sheet to be attached to the inner side wall of the box body.

For example, in order to be convenient for control the feed rate of feeder hopper, be provided with the flexible layer on the feeder hopper, the flexible layer is the bar piece, and its inboard is protruding to be equipped with the arc and keeps off establishes the rib, jet classification device still includes adjustment mechanism, adjustment mechanism include the driving piece and support the pressure cam, support the pressure cam connect in on the output shaft of driving piece, the driving piece can drive support the pressure cam rotation, be formed with on the pressure cam and support the pressure end, adjustment mechanism still includes cleaning component, cleaning component includes transfer gear, drive gear, screw rod and screw-in piece, transfer gear with support the coaxial setting of pressure cam, drive gear with transfer gear meshes, the screw rod is fixed to be worn to locate in the drive gear, the screw-in piece screw-in is in on the screw rod. The screw rod outside is provided with the external screw thread, the screw rod inboard is provided with the internal screw thread, the screw rod is located to the screw rod cover, the internal screw thread of screw rod with the mutual screw of external screw thread of screw rod. The box bottom is provided with the guide arm, the spacing groove has been seted up on the guide arm, the spacing groove is the bar groove, the screw is rectangular and slide set up in the spacing groove. The bottom of the box body is also communicated with a blowing hole, the bottom of the box body is provided with a blowing channel, the blowing channel is communicated with the blowing hole, one end of the blowing channel is connected to a compressed nitrogen tank, and the compressed nitrogen tank is arranged on the guide rod. And a blocking hole is formed in the side wall of the blowing channel, and a blocking block is arranged in the blocking hole. The screw rod can drive the release block of the screw rod to prop against the blocking block so as to enable the blocking block to move away. The transmission ratio of the transmission gear to the driving gear is 5:1, and the blocking block is a disc-shaped block body and blocks the blowing channel. The release block is a disc-shaped block body, and the axial direction of the release block is parallel to the axial direction of the blocking block. The release block comprises a honeycomb body and a closed ring sleeved on the periphery of the honeycomb body, and the axial direction of the closed ring is perpendicular to the length direction of the guide rod. One side of the closed ring is provided with a pressing convex part, the pressing convex part is provided with a concave surface, the concave surface is a circular arc-shaped concave surface, and the concave surface is matched with the peripheral surface of the blocking block. The concave surface of the pressing block can be attached to and pressed against the peripheral surface of the blocking block. The bottom of the box body is concavely provided with an air blowing groove and is provided with an air blowing cover, and the air blowing cover is arranged on the air blowing groove, so that an air blowing channel is formed in the air blowing cover. The blocking hole is arranged on the blowing cover. The blocking block is blocked in the blocking hole and is used for transversely blocking the blowing channel. The bottom surface of the air blowing groove is also provided with a mounting groove, the section of the mounting groove is rectangular, and the mounting groove is a blind groove. One side of the blocking block is accommodated in the mounting groove. The mounting groove is internally provided with a compression spring, and the compression spring is arranged in the mounting groove and is connected with the blocking block. And a pressing surface is formed on one side of the blocking block, which is far away from the compression spring, and is exposed to the outer side of the air blowing cover. The concave surface on the pressing part of the screwing piece can be put into contact with the pressing surface of the blocking block. The honeycomb body is internally provided with a plurality of cleaning holes, and the cleaning holes penetrate through the honeycomb body. The extension axis of a plurality of cleaning holes is parabolic, a plurality of wind guide grooves are formed in the side walls of a plurality of cleaning holes, a grid part is further arranged on one side of the box body, a plurality of diamond-shaped meshes are formed in the grid part, a baffle is rotatably arranged on one side of the grid part, the baffle is contained in the box body, an output pipe is arranged on the outer side of the grid part, and the output pipe is connected to a liquid water tank. The bottom of box still is provided with pushes away the pole, the one end of pushing away the pole is connected the baffle, it is kept away from to push away the pole the one end of baffle is formed with pushes away the portion of supporting, it is provided with the viscidity piece on the portion of pushing away to push away, the viscidity piece is the plasticine block, the outside cladding of plasticine block has the rubber sleeve. The screw-on piece pushes against the viscous block to deform and push against the part, a sliding groove is concavely formed in the side wall of the box body, the pushing rod is slidably arranged in the sliding groove, the pushing part is cylindrical, a plurality of notches are formed in the side wall of the pushing part, and the rubber sleeve is arranged in the pushing part. The baffle is also provided with a tension spring, one end of the tension spring is connected with the edge of the baffle, and the other end of the tension spring is connected with the blocking block. The bottom of the box body is also provided with an inclined hole in a penetrating way, and the inclined hole is obliquely arranged relative to the mounting groove. The side edge of the inclined hole is communicated with the mounting groove through a slit, and the tension spring is arranged in the inclined hole in a penetrating mode and connected to the blocking block. The elastic coefficient of the tension spring is smaller than that of the compression spring, and the pushing force of the compression spring is larger than the pulling force of the tension spring. The cross section of inclined hole is circular, the middle part of extension spring is provided with the slip plug, the slip plug is fixed in on the extension spring and slidingly set up in the inclined hole, one side of slip plug is formed with blocks up the lateral part, block up the lateral part slidingly set up in the slit. The sliding plugging column comprises a cylindrical shell and a heat dissipation substrate accommodated in the cylindrical shell, wherein the plugging side part is convexly arranged on the side wall of the cylindrical shell, a sliding layer is arranged on the outer side of the cylindrical shell, and the sliding layer and the inner side wall of the inclined hole are arranged in a sliding mode. An included angle of 18 degrees is formed between the axis of the inclined hole and the extending direction of the mounting groove.

In order to describe the structure and the beneficial effects of the adjusting mechanism in further detail, please refer to fig. 6 and 7, a flexible layer 131 is provided on the feeding hopper, the flexible layer is a strip-shaped sheet, an arc-shaped blocking rib is protruding on the inner side of the flexible layer, the jet classifying device further comprises an adjusting mechanism 60, the adjusting mechanism comprises a driving member 61 and a pressing cam 62, the pressing cam is connected to the output shaft of the driving member, and the driving member can drive the pressing cam to rotate, so that the pressing cam presses against the flexible layer, and the feeding rate in the feeding hopper is adjusted. For example, the pressing end 621 is formed on the pressing cam, and when the pressing end of the pressing cam completely presses against the flexible layer of the feeding hopper, the feeding hopper can be closed by using the arc-shaped blocking rib. For example, when the jet classifying device is stopped, the feed hopper is closed by the flexible layer pressed by the pressing cam, and in order to clean the classifying box conveniently, the adjusting mechanism further comprises a cleaning assembly, the cleaning assembly comprises a transmission gear 63, a driving gear 64, a screw 65 and a screwing piece 66, the transmission gear and the pressing cam are coaxially arranged, the driving gear is meshed with the transmission gear, the screw is fixedly arranged in the driving gear in a penetrating manner, and the screwing piece is screwed on the screw. For example, the outside of the screw is provided with external threads, the inside of the screwing piece is provided with internal threads, the screwing piece is sleeved on the screw, and the internal threads of the screwing piece are mutually screwed with the external threads of the screw. For example, the bottom of the box body is provided with a guiding rod 28, the guiding rod is provided with a limiting groove 281, the limiting groove is a strip-shaped groove, and the screwing piece is rectangular and is slidably arranged in the limiting groove. When the screw is rotated, the screw can only move up and down along the strip-shaped groove. For example, a blowing hole 214 is further provided through the bottom of the case, and is used for blowing nitrogen into the case during shutdown to clean dust remaining in the case. For example, the bottom of the case is provided with an air blowing passage 215 which communicates with the air blowing hole, one end of the air blowing passage is connected to a compressed nitrogen tank 216 which is provided on the guide rod. The side wall of the blowing channel is provided with a blocking hole 2151, and a blocking block 67 is arranged in the blocking hole to prevent compressed nitrogen from blowing into the box body. The screw piece deviates from one side of guide bar protruding be equipped with release piece 661, the screw rod can drive the release piece of screw piece support press in on the jam piece makes the jam piece removes, and then makes the passageway intercommunication of blowing, so that nitrogen gas in the compressed nitrogen jar passes through the passageway of blowing up blows in the box, to residual dust in the box sweeps. Simultaneously, the nitrogen can play isolated effect, is used for preventing the dust explosion takes place in the box.

For example, in order to improve the driving efficiency, the transmission ratio of the transmission gear to the driving gear is 5:1, and when the pressing cam presses against the feeding hopper, the screw element can press against the blocking block, so that the nitrogen released by the compressed nitrogen tank enters the box body. For example, the blocking block is a disc-shaped block and blocks the air blowing passage with an end face. The release block is also a disc-shaped block, for example, the axial direction of the closure ring is parallel to the axial direction of the blocking block. Referring to fig. 8, the release block includes a honeycomb body 6611 and a sealing ring 6613 sleeved on the periphery of the honeycomb body, and the axial direction of the sealing ring is perpendicular to the length direction of the guide rod. One side of the closed ring is provided with a pressing convex part 6615, the pressing convex part is provided with a concave surface, the concave surface is a circular arc concave surface, and the concave surface is matched with the peripheral surface of the blocking block. The concave surface of the pressing block can be attached to and pressed against the peripheral surface of the blocking block. For example, the bottom of the case is concavely provided with a blowing groove and is provided with a blowing cover 217 which covers the blowing groove, thereby forming the blowing passage in the blowing cover. The blocking hole is arranged on the blowing cover. The blocking block is blocked in the blocking hole and is used for transversely blocking the blowing channel. The bottom surface of the blowing groove is also provided with a mounting groove 218, the cross section of the mounting groove is rectangular, and the mounting groove is a blind groove, i.e. the mounting groove does not penetrate through the side wall of the box body. One side of the blocking block is accommodated in the mounting groove. For example, in order to facilitate the accommodation of the blocking piece, a compression spring 219 is provided in the installation groove, which is provided in the installation groove and connected with the blocking piece. And a pressing surface is formed on one side of the blocking block, which is far away from the compression spring, and is exposed to the outer side of the air blowing cover. The concave surface on the pressing part of the screwing piece can be put into contact with the pressing surface of the blocking block, the screwing piece can drive the release block to press the blocking block into the mounting groove, so that one side of the sealing ring is in contact with the bottom surface of the blowing groove, the other side of the sealing ring is flush with the blowing cover, and the honeycomb body is blocked at one end of the blowing hole. For example, a plurality of purge holes 6612 are provided in the honeycomb body, and the plurality of purge holes penetrate the honeycomb body so that the air blowing passages communicate. Compressed nitrogen in the compressed nitrogen tank can transversely penetrate through a plurality of cleaning holes of the honeycomb body and enter the box body through the air blowing holes. For example, the extending axes of the cleaning holes are parabolic, the side walls of the cleaning holes are provided with a plurality of air guide grooves, and the air guide grooves can guide the direction of air flow, so that the air blown out from one side of the honeycomb body can be dispersed, and enter the box body along each angle, so that dust in the box body is cleaned.

For example, in order to be convenient for collect remaining dust, one side of box still is provided with grid portion, offer a plurality of diamond mesh on the grid portion, one side of grid portion rotates and is provided with the baffle, the baffle accept in the box, the outside of grid portion is provided with the output tube, output tube connects to in the liquid basin. When the jet classifying device works, the grid part is blocked by the baffle plate, so that the jet classifying device works normally. When the jet classification device is stopped, the baffle plate can be opened, the gas in the compressed nitrogen tank is blown into the box body, and residual dust in the box body can enter the output pipe through the grid part and is guided into the liquid water tank through the output pipe, so that the residual dust is collected in the liquid water tank. For example, the bottom of box still is provided with pushes away the pole, push away the one end of pole and connect the baffle, push away the pole and keep away from the one end of baffle is formed with pushes away the portion of supporting, it is provided with the sticky block to push away on the portion of supporting, the sticky block is the plasticine block, the outside cladding of plasticine block has the rubber sleeve. Because be provided with the flexible plasticine block on pushing away the portion, consequently can make the screw joint piece relatively easily aim at the plasticine block has improved counterpoint stability. When the screw piece abuts against the blocking hole and is communicated with the blowing channel, the screw piece pushes the viscous block to deform and abut against the pushing part, so that the baffle plate is rotated by the pushing rod to open the baffle plate. At this time, the dust in the box can pass through the grid layer and enter the output pipe under the pushing of the compressed nitrogen. For example, in order to facilitate installation of the pushing rod, a sliding groove is concavely formed in a side wall of the box body, the pushing rod is slidably arranged in the sliding groove, the pushing part is cylindrical, a plurality of notches are formed in the side wall of the pushing part, and the rubber sleeve is arranged in the pushing part. The side wall of the box body is provided with the sliding groove, so that a certain guiding effect can be generated on the pushing rod, and free swing of the pushing rod is prevented.

For example, in order to be convenient for when the jet classification device works, the baffle can be automatically closed, a tension spring 68 is further arranged on the baffle, one end of the tension spring is connected with the edge of the baffle, and the other end of the tension spring is connected with the blocking block. For example, the bottom of the case is further provided with an inclined hole 69, which is inclined with respect to the mounting groove. The side edge of the inclined hole is communicated with the mounting groove through a slit, and the tension spring is arranged in the inclined hole in a penetrating mode and connected to the blocking block. For example, the spring constant of the tension spring is smaller than the spring constant of the compression spring, i.e. the pushing force of the compression spring is larger than the pulling force of the tension spring. When the jet classifying device works, the blocking block can be blocked in the blowing-up channel under the action of the compression spring. When the screw piece pushes against the blocking block, the blocking block can be received in the mounting groove under the cooperation of the tension spring, and meanwhile, the screw piece also drives the baffle to be opened by utilizing the pushing rod. In order to maintain the sealing, the cross section of the inclined hole is circular, a sliding blocking column 681 is arranged in the middle of the tension spring, the sliding blocking column is fixed on the tension spring and is arranged in the inclined hole in a sliding manner, a blocking side part is formed on one side of the sliding blocking column, and the blocking side part is arranged in the slit in a sliding manner, so that the mounting groove forms a finished rectangle to maintain the sealing effect of the inclined hole. For example, the sliding plug comprises a cylindrical shell and a heat dissipation base body accommodated in the cylindrical shell, wherein the plug side part is convexly arranged on the side wall of the cylindrical shell, and the heat dissipation base body can play a certain role in heat dissipation. The outside of cylindric casing is provided with the slip layer, the slip layer with the inside wall slip setting in inclined hole. For example, an included angle of 18 degrees is formed between the axis of the inclined hole and the extending direction of the mounting groove. When the driving piece drives the pressing cam to press the feeding hopper, the screwing piece can synchronously push the blocking block to open the air blowing hole, and the tension spring can release the baffle plate, so that the baffle plate is opened under the pushing of the screwing piece. Three actions can be synchronously realized through the rotary driving of the driving piece, so that the automatic cleaning of the box body is realized, and the compressed nitrogen can prevent dust explosion in the box body.

Other embodiments of the present invention also include a technical solution that can be implemented and is formed by combining the technical features in the foregoing embodiments.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The jet classification device is characterized by comprising an air inlet assembly, a classification box, a collecting assembly and a moving assembly, wherein the air inlet assembly comprises an air inlet pipe and a feeding hopper arranged on the air inlet pipe, the feeding hopper is obliquely arranged relative to the air inlet pipe, the classification box comprises a box body and two coanda blocks arranged in the box body, a guide gap is formed between the two coanda blocks, the air inlet pipe penetrates through the side wall of the box body and is communicated with the guide gap, a plurality of discharge holes are formed in the bottom of the box body at intervals, the collecting assembly comprises a main air flow pipe and a plurality of Laval pipes arranged on the main air flow pipe, the Laval pipes are communicated with the discharge holes in a one-to-one correspondence manner, and one end of each Laval pipe is connected with a bag dust collector;

the movable assembly comprises a plurality of support rods and annular support bars arranged on the support rods, two racks are convexly arranged on the annular support bars, the two racks are parallel to each other and are arranged at intervals, two groups of gears are arranged at the bottom edge of the box body, and the two groups of gears are oppositely arranged and are respectively meshed with the two racks;

the jet classifying device further comprises a vibrating assembly, the vibrating assembly comprises a vibrating piece, a connecting rod and a lantern ring, the lantern ring is sleeved on the feeding hopper, two ends of the connecting rod are respectively connected to the vibrating piece and the lantern ring, and the axis of the feeding hopper is inclined relative to the axis of the air inlet pipe.

2. The jet classification apparatus of claim 1, wherein the collection assembly further comprises an air compressor, the air compressor being connected to the main air flow tube.

3. The jet classification apparatus of claim 2, wherein a connection hole is formed in a side wall of the case, the connection hole communicates with the guide gap, and an end portion of the air intake pipe is disposed in the connection hole.

4. A jet classification apparatus as claimed in claim 3 wherein the collection assembly further comprises a plurality of connection tubes connected to the plurality of laval tubes in a one-to-one correspondence, the bag house being connected to an end of the connection tube remote from the laval tubes.

5. The jet classification apparatus of claim 4, wherein the collection assembly further comprises a plurality of collection tubes in one-to-one communication with the plurality of discharge ports, and wherein an end of the collection tube distal from the discharge ports is connected to the connection tube.

6. The jet classification apparatus of claim 4, wherein the collection assembly further comprises a movable plate, a plurality of connection ports are spaced apart from the movable plate, the plurality of connection ports are in one-to-one communication with the plurality of discharge ports, and an end of each collection tube is secured to a peripheral edge of the corresponding connection port.

7. The jet classification apparatus of claim 6, wherein said moving blade is slidably disposed at a bottom of said housing.

8. The jet classification apparatus of claim 7, wherein a width of said moving sheet is less than a distance between said two racks.

9. The jet classifying device according to claim 8, wherein two clamping strips are convexly arranged at the bottom of the box body, clamping grooves are formed in the clamping strips, and two sides of the moving sheet are respectively accommodated in the two clamping grooves.

10. A jet classifying device according to claim 9, wherein an elastic pull rope is provided on the annular support bar, and one end of the elastic pull rope is connected to the edge of the moving plate.