Air injection pulse fluidization swinging screen
By introducing an air jet pulse fluidization structure and a dust removal device into the gyratory screen, the problems of screen clogging and high energy consumption are solved, achieving efficient screening and fluidized separation of materials.
Patent Information
- Application Number
- CN202423059049.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing gyratory screens are prone to clogging of the lower screen during material screening, resulting in poor spraying effect, high energy consumption, and inability to clear large areas of screen holes, leading to poor screening effect.
It adopts a jet pulse fluidized gyratory screen structure. By setting horizontal air blowing pipes and air flow pipes in the screen box, the air flow blows from bottom to top onto the screen mesh. Combined with the gyratory movement of the screen box, fluidized screening of materials is achieved. It is also equipped with a dust removal mechanism to collect screened particles.
It effectively avoids screen clogging, improves screening efficiency, reduces energy consumption, and achieves efficient separation and collection of materials with different particle sizes.
Smart Images
Figure CN223571320U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of swing screen, especially to a jet pulse fluidization swing screen. BACKGROUND
[0002] The swing screen is an automatic screening tool simulated by a machine, which can separate and screen particles of different sizes. The current air jet is a screening nozzle through the negative pressure generated by a dust collector and the jet technology, which greatly improves the work efficiency. The existing jet swing screen, such as the swing air jet screen with the application number 2020225043651, includes a screen box, a screen mesh and a base. The features are that it further includes an adjusting structure for changing the mesh size, a protection structure for reducing the impact, and a filtering structure for isolating and treating dust. A rotating rod is connected to the middle position inside the base, and a drive motor is installed at the bottom end of one side of the base. The output end of the drive motor is connected to the rotating rod through a belt and a belt pulley. The top end of the base is provided with a screen box, and rubber supports are evenly installed between the screen box and the base. An eccentric wheel is installed on the upper end of the outer wall of the rotating rod. A PLC controller is installed at one end of the screen box, and screen meshes are installed at the upper end and the lower end inside the screen box. The adjusting structure is rotatably connected to the middle position at the top end of the screen mesh. A screen cover is provided at the top end of the screen box, and the protection structure is installed on both sides inside the screen cover. An air inlet pipe is opened at the upper end of one side of the screen box, and an air outlet pipe is opened at the upper end of the other side of the screen box. Nozzles are penetrated through the opposite sides of the air outlet pipe and the air inlet pipe. An air bellow is provided at the top end of the other side of the screen box, and an air pump is installed at the middle position inside the air bellow. An air pipe connected to the air outlet pipe is installed at the output end of the air pump. Pulling ropes are evenly provided on the side of the air bellow close to the screen cover, and pull rings are correspondingly provided at the top end of the screen cover on one side of the pulling ropes. The filtering structure is installed at the top end of the air bellow. When applied, the material is added to the inside of the screen box. The drive motor is controlled to work by the PLC controller, and the rotating rod is driven to rotate under the action of the belt and the belt pulley, thereby driving the eccentric wheel to rotate and generating a large centrifugal force. The screen box is supported by the rubber supports to simulate the manual screening swing. The air pump is controlled to work by the PLC controller to generate negative pressure, thereby generating a screening airflow through the nozzle. The negative pressure is converted into airflow jet power after the treatment, which pushes the particles to the screen cover to collide with the screen cover to eliminate agglomeration, and then the dispersed particles are attracted to the top end of the screen mesh by the negative pressure. The large particles stay on the surface of the screen mesh, and the small particles pass through the screen mesh and fall down, thereby realizing the screening work.
[0003] But the air flow of the above-mentioned swing screen is sprayed from top to bottom to each layer of screen, and the nozzle is used as the air jet structure to spray the screen, and the material particles are falling from the upper screen to the lower screen due to their own gravity, and the particle size of the material is getting smaller when the material falls to the lower part of the screen, and the small particle material is easy to be agglomerated together and block the screen holes of the lower screen when falling, at the same time, part of the large particle material is easy to block in the screen hole because of the shape and particle size just in the critical state of the screen hole, and the lower screen hole is easy to be blocked, and the nozzle has a certain distance from the lower screen, so that the spraying effect of the nozzle on the lower screen is poor, which causes the lower screen to be easy to be blocked, and the material is not easy to be screened, so that the screening effect of the material is poor, and the spraying area of the nozzle on the screen is small, which cannot spray the screen in a large area, and the spraying effect is poor, which cannot dredge the screen hole in a large area, and the screening effect of the screen is poor. In addition, the nozzle is located at the upper part of the screen box relative to the screen in the upper end of the screen box, so that the nozzle is suitable for a single group of screen in the upper end of the screen box, and a larger jet pressure of the nozzle is required for the screen group in the lower end of the screen box and the lower part of the upper end screen, which leads to high overall energy consumption.
[0004] Therefore, the present application is provided. The utility model discloses a kind of air jet pulse fluidization swing screens, to solve the problem that the existing swing screen is not easy to efficiently screen material and the poor jet effect, high energy consumption.
[0005] The utility model discloses a kind of air jet pulse fluidization swing screens, to solve the problem that the existing swing screen is not easy to efficiently screen material and the poor jet effect, high energy consumption.
[0006] In order to achieve the purpose, the utility model adopts the technical scheme of:
[0007] The invention discloses a jet pulse fluidization swing screen, which comprises a frame, a screen box, a screen device and a jet structure capable of generating jet airflow to the screen device, the screen box is installed on the frame in a transversely swingable manner, the screen device is transversely installed in the screen box, the screen device has at least one screen group, each screen group is composed of a plurality of layers of screen arranged from top to bottom; the screen box is provided with pulse blowing devices below the screen groups, the pulse blowing devices have blowing pipes, airflow pipes and shunt pipes, the blowing pipes are arranged in a plurality of groups, the blowing pipes are horizontally and spacedly arranged, the horizontal direction of the blowing pipes is perpendicular to the spacing direction of the blowing pipes, a plurality of jet hole rows are formed on the side of the blowing pipes facing the screen, the jet hole rows are spacedly arranged along the length direction of the blowing pipes, each jet hole row is composed of a plurality of jet holes spacedly arranged along the circumferential direction of the blowing pipe, the airflow pipes are connected to the blowing pipes through the shunt pipes, the screen box is provided with pulse air generating devices outside the airflow pipes, the pulse air generating devices and the pulse blowing devices form the jet structure, the outer side wall of the screen box is provided with dust removal pipes connected to the hollow chamber of the screen box below the screen device, and the screen box is provided with dust removal mechanisms connected to the dust removal pipes.
[0008] The horizontal direction of the blowing pipes is the front-rear direction, the blowing pipes have a hollow strip structure, the blowing pipes are horizontally arranged along the front-rear direction, the two end portions of the blowing pipes are connected to the inner side wall of the screen box, the blowing pipes have a circular pipe body, a plurality of circular hole rows are arranged on the upper half of the blowing pipes, each circular hole row is composed of a plurality of circular through holes spacedly arranged along the curvature direction of the blowing pipe, the circular through holes are the jet holes, and the circular hole rows are the jet hole rows.
[0009] The middle position of the lower half of the blowing pipe is provided with an upper sleeve column connected to the hollow structure of the blowing pipe and open at both ends, the first end of the shunt pipe is sealingly installed in the upper sleeve column, and the second end of the shunt pipe is connected to the airflow pipe through a lower sleeve column.
[0010] The airflow pipe has a hollow circular pipe body, the airflow pipe is horizontally arranged along the front-rear direction below the middle position of each blowing pipe, the front-rear two ends of the airflow pipe are connected to the inner side wall of the screen box, the middle position of the upper half of the airflow pipe is provided with a plurality of lower sleeve columns connected to the hollow chamber of the airflow pipe, the lower sleeve columns are open at both ends, and the lower sleeve columns are uniformly and spacedly arranged along the curvature direction of the airflow pipe, and the second ends of the shunt pipes are sealingly installed in the lower sleeve columns.
[0011] The screen box is provided with two screen groups, each screen group is provided with a pulse blowing device below, and the airflow pipes of the two pulse blowing devices are connected to the delivery end of the pulse air generating device through a connecting pipe.
[0012] The outer side wall of the screen box is provided with a dust removal port in the lower range of the screen device, and the outer side wall of the screen box is outwardly protruding at the position of the dust removal port and is provided with the dust removal pipe communicated with the dust removal port.
[0013] The jet pulse fluidization swing screen of the present application is used to add material into the screen box, and the screen box swings on the frame to screen the material, and the pulse air generator is started, and the pulse air flow passes through the air flow pipe, the flow dividing pipe and the air blowing pipe in sequence, and is finally blown from the air blowing hole to the screen, at this time, the pulse air flow is blown from bottom to top to the lowermost screen, and the particles blocking the screen holes are moved upward under the action of the pulse air flow, the pulse air flow unblocks the lowermost screen, and the pulse air flow can also pass through the lowermost screen to blow to the upper screen, and the screen box also swings, so that the lower screens are not easily blocked, and the material particles of various particle sizes can be effectively screened, and after the material particles are screened by the lowermost screen, they are collected by the dust removal mechanism; compared with the prior art, the upper half of each air blowing pipe is provided with the air blowing hole and is arranged below the screen, so that the air blowing pipe can blow to the screen in a large range, the jet effect of the air flow of the air blowing pipe is improved, the lower screen is not easily blocked, and the screening effect of the material is good; moreover, the air flow is the pulse air flow moving from bottom to top, the material particles are suspended in the upward moving air flow, the material particles produce fluid motion, and the fluidization phenomenon is formed, at the same time, the material particles of different particle sizes move from top to bottom, the moving direction of the air flow is opposite to that of the material particles, the material particles can be effectively dispersed, the material can be effectively and efficiently screened, the pulse air flow can reduce the falling resistance of the material particles, and the swing screening of the material by the screen is not affected. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a structure schematic view of the present application.
[0015] Fig. 2 It is still another structure schematic view of the present application.
[0016] Fig. 3 It is still another structure schematic view of the present application. DETAILED DESCRIPTION
[0017] In order to further explain the technical scheme of the present application, the following will be described in detail in combination with the drawings.
[0018] A jet pulse fluidization swing screen, as shown in Figs. 1-3As shown, including the rack, screen box 1, screen device and can produce jet flow of the screen device jet structure, screen box 1 is mounted on the rack in a manner capable of lateral swing, screen device is installed in the screen box 1, screen device has at least a group of screen group, each screen group is composed of several layers of screen 2 arranged from top to bottom, for example, a single group of screen group has four screen 2 arranged from top to bottom, the aperture of the four screen 2 is 20 mesh, 40 mesh, 70 mesh and 140 mesh from top to bottom, the swing of the screen box 1 on the rack and the specific structure of the screen device are well known to those skilled in the art, and will not be described here.
[0019] The screen box 1 is provided with a pulse blowing device below the screen group, the pulse blowing device has a blowing pipe 3, a gas flow pipe 4 and a shunt pipe 5, the blowing pipe 3 is provided with several blowing pipes 3, each blowing pipe 3 is horizontally and spaced arranged, the horizontal direction of each blowing pipe 3 is perpendicular to the spacing direction of each blowing pipe 3, one side of the blowing pipe 3 facing the bottom layer of the screen 2 is provided with a plurality of jet hole rows arranged along the length direction of the blowing pipe 3, each jet row is composed of a plurality of jet holes arranged along the circumference direction of the blowing pipe 3; specifically, the blowing pipe 3 is in a hollow strip shape, the blowing pipe 3 is horizontally arranged along the front and back direction, and the two ends of the blowing pipe 3 are connected with the inner side wall of the screen box 1, that is, the two end faces of the blowing pipe are recessed with locking grooves, the outer side wall of the screen box is provided with locking holes corresponding to the positions of the locking grooves, the blowing holes are locked together with the screen box 1 through the locking holes and the locking grooves in turn through the mounting bolts, the blowing pipe 3 is a circular pipe body, a plurality of circular hole rows are arranged on the upper half of the blowing pipe 3, each circular hole row is composed of a plurality of circular through holes arranged along the curvature direction of the blowing pipe 3, the circular through hole is the jet hole, and the circular hole row is the jet hole row; in application, the blowing pipes are horizontally and spaced arranged, and the range of the screen is wider, and the upper half of the blowing pipe 3 is provided with jet holes, so that the blowing pipe can blow to the screen in a larger range, so that the screen is not easy to be blocked, and one group of gas flow pipes corresponds to one group of screen groups, the gas flow can be shunted, and the energy consumption is low. At the same time, the gas flow from bottom to top can make the particles of different particle sizes suspended between the two screens, and the particles of the material show the phenomenon of fluid state under the action of the gas flow, that is, the fluidization phenomenon.
[0020] The air flow pipe 4 is communicated with each blowing pipe 3 through several shunt pipes 5, the pulse air generating device providing pulse air flow for the air flow pipe 4 is installed outside the screen box 1, and the pulse air generating device and the pulse blowing device constitute the above-mentioned jet structure; specifically, the lower half of the blowing pipe 3 is provided with an upper sleeve column (not shown in the figure) which is communicated with the hollow structure of the blowing pipe 3 and is open at both ends, the first end of the shunt pipe 5 is sealingly installed in the upper sleeve column, and the second end of the shunt pipe 5 is communicated with the air flow pipe 4 through a lower sleeve column, that is, the air flow pipe 4 is a hollow circular pipe body, the air flow pipe 4 is horizontally arranged at the lower middle position of each blowing pipe 3 along the front-rear direction, and the front-rear ends of the air flow pipe 4 are connected with the inner side wall of the screen box 1, the connection mode of the air flow pipe 4 and the screen box is similar to the connection mode of the blowing pipe 3 and the screen box, and the upper half of the air flow pipe 4 is provided with several lower sleeve columns which are communicated with the hollow chamber of the air flow pipe 4, the lower sleeve columns are open at both ends, and the lower sleeve columns are uniformly and evenly arranged along the curvature direction of the air flow pipe 4, and the second ends of the shunt pipes 5 are sealingly installed in the lower sleeve columns, respectively, the pulse air flow control device has a high-pressure air pump and a pulse electromagnetic valve controlled by a pulse control instrument, the output end of the high-pressure air pump is communicated with the air flow pipe 4, the pulse electromagnetic valve is arranged on the air flow pipe 4, and the high-pressure air pump and the pulse electromagnetic valve are arranged outside the screen box, the high-pressure air pump and the pulse electromagnetic valve can adjust the air pressure and frequency of the pulse air flow, the specific structure and mode of the pulse air generating device providing pulse air flow for the air flow pipe 4 are known to those skilled in the art, and will not be described here; in application, the pulse air generating device generates pulse air flow which is delivered into the air flow pipe 4, the pulse air flow passes through the shunt pipe into the blowing pipe 3, and is finally blown to the screen from the jet hole. In addition, the upper sleeve column is installed at the middle position of the blowing pipe, and the lower sleeve column is installed at the upper half of the air flow pipe 4, so that the pulse air flow can be more uniformly distributed in the blowing pipe 3 and can be more uniformly blown to the screen.
[0021] The dust removal pipe 11 which is communicated with the hollow chamber of the screen box 1 is installed at the lower position of the screen device of the outer side wall of the screen box 1, and the dust removal mechanism which is communicated with the dust removal pipe 11 is arranged on the screen box 1; specifically, the dust removal port is arranged in the range of the outer side wall of the screen box 1 which is below the screen device, the dust removal pipe 11 which is communicated with the dust removal port is outwardly protruded at the position of the dust removal port of the outer side wall of the screen box 1, and the dust removal mechanism has a bag-type dust collector 6, the output end of the bag-type dust collector 6 is communicated with the screen box 1 through the dust removal pipe 11, and the dust removal mechanism collects the particles screened out by the lowermost screen, and the collection mode is known to those skilled in the art, and will not be described here; in application, the dust removal mechanism is started, the particles with a particle size less than 140 μm are screened out by the lowermost screen and fall, and the particles with a particle size less than 140 μm are collected by the dust removal mechanism.
[0022] The jet pulse fluidization swing screen of the new type is applied to add the material into the screen box 1, the screen box 1 swings on the frame to screen the material, the pulse air generating device is started, the pulse airflow passes through the airflow pipe 4, the flow dividing pipe 5 and the air blowing pipe 3 in turn, and finally blows to the screen mesh from the air blowing hole, at this time, the pulse airflow blows to the lowermost screen mesh from bottom to top, the particles blocking the screen mesh hole of the lowermost screen mesh move upward under the action of the pulse airflow, the pulse airflow dredges the lowermost screen mesh, the pulse airflow can also blow to the upper screen mesh through the lowermost screen mesh, meanwhile, the screen box also swings, so that the lower screen mesh is not easy to be blocked, and the material particles of various particle sizes can be effectively screened, when the material particles are screened to the particles with the particle size less than 140 microns and fall, the particles are collected by the dust removal mechanism; compared with the prior art, the upper half of each air blowing pipe 3 is provided with the air blowing hole and is arranged and distributed below the screen mesh, so that the air blowing pipe can blow to the screen mesh in a large range, the jetting effect of the airflow of the air blowing pipe is improved, the lower screen mesh is not easy to be blocked, the airflow is the pulse airflow moving from bottom to top, the material particles are suspended in the airflow moving upward, the material particles generate fluid motion, so that the fluidization phenomenon is formed, meanwhile, the material particles of different particle sizes move from top to bottom, the movement direction of the airflow is opposite to that of the material particles, the material particles can be effectively dispersed, so that the material can be effectively screened, the pulse airflow reduces the falling resistance of the material particles, and does not affect the swing screening of the screen mesh to the material. Moreover, each screen mesh group corresponds to a group of pulse air blowing devices, and the pulse air generating device can provide the pulse airflow to each airflow pipe, so that each screen mesh group can effectively and efficiently screen the material.
[0023] In the new type, preferably, the screen box 1 is provided with two screen mesh groups, each screen mesh group is provided below with a pulse air blowing device, the airflow pipes 4 of the two pulse air blowing devices are arranged at the same end and extend out of the screen box 1 and are connected to the conveying end of the pulse air generating device through the connecting pipe 7, the connecting pipe 7 is vertically arranged, two communication holes are formed in the outer wall of the connecting pipe 7, and two sleeve columns (not shown in the figure) are arranged on the outer wall of the connecting pipe 7 and are connected to the hollow chamber of the connecting pipe 7, the end of the airflow pipe 4 extending out of the screen box 1 is sealingly arranged in the sleeve column, and when a plurality of screen mesh groups are arranged, a dust removal mechanism is arranged below the lowermost screen mesh group; in use, the plurality of screen mesh groups can further screen the particles and improve the screening effect.
[0024] The product form of the new type is not limited to the drawings and examples, and any person can appropriately change or modify the similar ideas, which should be regarded as not departing from the patent category of the new type.
Claims
1. A jet pulse fluidized rocking screen, comprising a frame, a screen box, a screen assembly, and a jet structure capable of generating a jet flow to the screen assembly, wherein the screen box is mounted on the frame in a manner capable of laterally rocking, the screen assembly is laterally mounted inside the screen box, and the screen assembly has at least one set of screen groups, each set of screens consisting of several layers of screens arranged from top to bottom; characterized in that: The pulse blowing device is provided below the screen group in the screen box, has a blowing pipe, an airflow pipe and a shunt pipe, the blowing pipe is provided with several pipes, each pipe is horizontally and spaced arranged, the horizontal direction of each pipe is perpendicular to the spacing direction of each pipe, the side of the blowing pipe facing the screen is provided with several jet hole rows which are spaced arranged along the length direction of the blowing pipe, each jet hole row is composed of several jet holes which are spaced arranged along the circumferential direction of the blowing pipe, the airflow pipe is connected with each blowing pipe through several shunt pipes, a pulse air generating device is installed outside the screen box to provide pulse airflow for the airflow pipe, the pulse air generating device and the pulse blowing device form the above-mentioned jet structure, a dust removal pipe which is connected with the hollow chamber of the screen box is installed below the screen device on the outer side wall of the screen box, a dust removal mechanism which is connected with the dust removal pipe is provided on the screen box.
2. A jet pulse fluidized swing sieve according to claim 1, characterized in that: The blowing pipe is in a hollow strip structure, is horizontally arranged along the front-rear direction, and is connected with the inner side wall of the screen box at both ends, the blowing pipe is a circular pipe body, several circular hole rows are provided on the upper half of the blowing pipe, each circular hole row is composed of several circular through holes which are spaced arranged along the curvature direction of the blowing pipe, the circular through hole is the jet hole, and the circular hole row is the jet hole row.
3. A jet pulse fluidized swing sieve according to claim 2, characterized in that: The upper sleeve column which is connected with the hollow structure of the blowing pipe is protruded downward at the middle position of the lower half of the blowing pipe, the first end of the shunt pipe is sealingly installed in the upper sleeve column, and the second end of the shunt pipe is connected with the airflow pipe through the lower sleeve column.
4. A jet pulse fluidized swing sieve according to claim 3, characterized in that: The airflow pipe is a hollow circular pipe body, is horizontally arranged along the front-rear direction below the blowing pipe, and is connected with the inner side wall of the screen box at both ends, the upper sleeve column which is connected with the hollow chamber of the airflow pipe is protruded upward at the middle position of the upper half of the airflow pipe, the second end of each shunt pipe is sealingly installed in the lower sleeve column.
5. A jet pulse fluidized swing sieve according to claim 4, wherein: The screen box is provided with two screen groups, each screen group is provided with a pulse blowing device below, the airflow pipes of the two pulse blowing devices are connected with the conveying end of the pulse air generating device through the connecting pipe.
6. A jet pulse fluidized swing mill according to claim 1, wherein: The dust removal port is provided on the outer side wall of the screen box below the screen device, the dust removal pipe which is connected with the dust removal port is protruded outward at the position of the dust removal port, and the dust removal mechanism has a bag dust collector, the output end of the bag dust collector is connected with the screen box through the dust removal pipe.