A horizontal airflow screening machine
By introducing a coaxial rotation design of composite net and screening net into a horizontal airflow screener, efficient screening and secondary screening of viscous or wet materials is achieved, and the screening is easily damaged and screened in the prior art The problem of insufficient accuracy extends the screen life and reduces maintenance costs.
Patent Information
- Application Number
- CN202411328008.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2044-09-24
AI Technical Summary
The existing horizontal airflow screening machine has poor screening effect when dealing with materials with high viscosity or high humidity, and the screen mesh is easily damaged and needs to be replaced frequently, which increases operating costs and maintenance complexity.
A horizontal airflow screening machine with composite mesh was designed. The composite mesh and the screening mesh rotated coaxially to form a gap to achieve secondary screening, which extended the service life of the screen and improved the utilization efficiency of materials.
The materials attached to the screen holes are secondary screened through the continuous reciprocating movement of the composite network, which extends the use cycle of the screen, improves the grading accuracy and screening efficiency of the materials, and reduces the screen cleaning frequency and maintenance costs. .
Smart Images
Figure CN118847510B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of screening machines, in particular to a horizontal airflow screening machine. Background Art
[0002] In the field of material processing and particle classification, horizontal airflow screeners are widely used due to their efficient screening capabilities and low energy consumption. The equipment can classify materials by controlling the airflow, can operate continuously, and is suitable for screening a variety of materials, including but not limited to powders, particles and fibrous substances.
[0003] Existing horizontal airflow screening machines usually include a horizontally arranged screening chamber. The material enters the screening chamber through the feed port. Under the action of the airflow, the fine material is separated through the screen, while the coarse material is discharged from the other end. This design allows the material to fully contact with the air during the screening process, improves the screening efficiency, and also reduces the pollution of the material.
[0004] However, the horizontal airflow screening machine in the prior art has some limitations. First, the screening accuracy of the equipment is limited by the control of the screen aperture and airflow velocity. For some materials with special physical properties, such as materials with high viscosity or high humidity, the screening effect is not ideal. Secondly, the screen needs to be replaced regularly as a consumable part, which not only increases the operating cost, but also increases the complexity of maintenance work. Summary of the invention
[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.
[0006] In view of the above problems and / or the problems existing in the existing screening machines, the present invention is proposed.
[0007] Therefore, the problem to be solved by the present invention is to reduce the frequency of screen failure and increase the service life of the screen.
[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a horizontal airflow screening machine, comprising a shell, the shell comprising an end cover, a screening box, a discharge port, supporting feet and a feed port, the end cover is arranged on the side of the screening box, the discharge port is arranged on the lower side of the screening box, the supporting feet are arranged around the screening box, and the feed port is arranged on the top of the screening box close to the end cover; and a screening unit, the screening unit comprising a motor, a screening mesh and a composite mesh, the motor is arranged on the inner side of the end cover, the screening mesh is arranged on the inner side of the screening box, the composite mesh is coaxially matched with the screening mesh, the composite mesh is arranged on the outer circumference of the screening mesh, and the composite mesh is coaxially slidably matched with the screening mesh and the screening box.
[0009] As a preferred solution of the horizontal airflow screening machine described in the present invention, the discharge port includes a fine material outlet and a coarse material outlet, the fine material outlet is arranged directly below the screening box, and the coarse material outlet is arranged at one end of the screening box away from the end cover.
[0010] As a preferred solution of the horizontal airflow screening machine described in the present invention, the motor is fixedly connected to the end cover, the motor is coaxially matched with the screening box, the motor includes a gear plate and a fixed bracket, and the gear plate is arranged at the end of the motor.
[0011] As a preferred solution of the horizontal airflow screening machine described in the present invention, the gear plate includes a rotating shaft and a feeding screw, the feeding screw is fixedly connected to the rotating shaft, and the rotating shaft is arranged at the end of the gear plate.
[0012] As a preferred solution of the horizontal airflow screening machine described in the present invention, the fixed bracket is arranged on the side of the motor, and the fixed bracket includes a matching rod, and the matching rod is movably matched with the fixed bracket.
[0013] As a preferred solution of the horizontal airflow screening machine described in the present invention, the matching rod includes a driving gear and a driven gear, the driving gear and the driven gear are both fixedly connected to the matching rod, and the driving gear is meshed with the gear plate.
[0014] As a preferred embodiment of the horizontal airflow screening machine described in the present invention, the screening net includes a gear ring 1 and a mesh 1, the gear ring 1 is arranged on the outer circumference of the end of the screening net, and the mesh 1 array is arranged on the surface of the screening net.
[0015] As a preferred embodiment of the horizontal airflow screening machine described in the present invention, the composite net includes a matching ring, a cam groove and mesh two, the matching ring is arranged on the side of the composite net, the cam groove is arranged on the outer circumference of the matching ring, and the mesh two array is arranged on the surface of the composite net.
[0016] As a preferred solution of the horizontal airflow screening machine described in the present invention, the matching ring includes a second gear ring, the second gear ring is arranged on the inner side of the cam groove, and the screening box includes a sliding head, and the sliding head is slidably matched with the cam groove.
[0017] As a preferred solution of the horizontal airflow screening machine described in the present invention, the composite net and the screening net rotate coaxially, there is a gap between the composite net and the screening net, and the aperture sizes of the composite net and the screening net are equal.
[0018] The beneficial effects of the present invention are as follows: different from the drum screen of the traditional horizontal airflow screening machine, the present invention provides rotational power for the drum screen, so that during the screening process, the screening of the screen will not always be on one surface of the screen, thereby improving the utilization rate of the screen, and the composite screen set is installed on the outside of the screen, and the screening is first performed by the screen. When the screen is screening, some materials will adhere to the holes of the screen. When the composite screen moves relative to the screen, the materials attached to the holes of the screen can be screened for the second time through continuous reciprocating motion, thereby extending the service life of the screen. At the same time, the materials screened by the screen are more thoroughly, thereby improving the utilization efficiency of the materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0020] Figure 1 This is the overall diagram of the horizontal airflow screening machine.
[0021] Figure 2 It is the side view of the horizontal airflow screening machine.
[0022] Figure 3 This is the internal structure diagram of the horizontal airflow screening machine.
[0023] Figure 4 This is the screen assembly structure diagram of the horizontal airflow screening machine.
[0024] Figure 5 This is the structural diagram of the horizontal airflow screening machine at point A.
[0025] Figure 6 This is the structural diagram of the horizontal airflow screening machine at B.
[0026] Figure 7 A diagram showing the changes in the coordination between the screening mesh and the composite mesh.
[0027] Figure 8 The following are two diagrams showing the changes in the coordination status of the screening mesh and the composite mesh.
[0028] Fig. 9 Three diagrams showing the changes in the coordination status of the screening mesh and the composite mesh.
[0029] Reference numerals:
[0030] 100, shell; 200, screening unit; 101, end cover; 102, screening box; 103, discharge port; 104, supporting foot; 105, feed port; 201, motor; 202, screening net; 203, composite net; 103a, fine material outlet; 102a, sliding head; 103b, coarse material outlet; 201a, gear plate; 201b, fixed bracket; 201a-1, rotating shaft; 201a-2, feeding screw; 201b-1, matching rod; 201b-11, driving gear; 201b-12, driven gear; 202a, gear ring 1; 202b, mesh 1; 203a, matching ring; 203b, cam groove; 203c, mesh 2; 203a-1, gear ring 2. DETAILED DESCRIPTION
[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0032] Reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, and provides a horizontal airflow screening machine, including a housing 100 and a screening unit 200, wherein the housing 100 includes an end cover 101, a screening box 102, a discharge port 103, support legs 104 and a feed port 105, wherein the end cover 101 is arranged on the side of the screening box 102, the discharge port 103 is arranged on the lower side of the screening box 102, the support legs 104 are arranged around the screening box 102, and the feed port 105 is arranged At the top of the screening box 102, close to the end cover 101; the screening unit 200 includes a motor 201, a screening mesh 202 and a composite mesh 203, the motor 201 is arranged on the inner side of the end cover 101, the screening mesh 202 is arranged on the inner side of the screening box 102, the composite mesh 203 is coaxially matched with the screening mesh 202, the composite mesh 203 is arranged on the outer circumference of the screening mesh 202, and the composite mesh 203, the screening mesh 202 and the screening box 102 are coaxially slidably matched.
[0033] Specifically, the screening unit 200 is installed inside the shell 100, the motor 201 is installed inside the end cover 101, the screening mesh 202 and the composite mesh 203 are installed inside the screening box 102, the screening mesh 202 and the composite mesh 203 are coaxially matched, the diameter of the composite mesh 203 is slightly larger than the diameter of the screening mesh 202, and there is a gap between the composite mesh 203 and the screening mesh 202, and the gap is smaller than the aperture size of the screening mesh 202.
[0034] Furthermore, the composite net 203 and the screening net 202 rotate relative to each other, and the composite net 203 and the screening net 202 rotate in opposite directions. The two mesh structures form a shearing effect. When the material falling into the gap between the two nets is irregular and locally large, the shearing effect causes the material to be crushed, ground and cut for secondary screening. This firstly avoids the material from being stuck in the screening net 202, which would have a negative impact on the screening effect of the screening net 202. Furthermore, the rotating screening net 202 avoids using a single-sided screening net 202 for screening all the time, thereby improving the utilization efficiency of each part of the screening net 202.
[0035] Reference Figure 1 to Figure 5 , which is the second embodiment of the present invention. It is different from the first embodiment in that this embodiment provides a horizontal airflow screening machine including: the discharge port 103 includes a fine material outlet 103a and a coarse material outlet 103b, the fine material outlet 103a is arranged directly below the screening box 102, and the coarse material outlet 103b is arranged at the end of the screening box 102 away from the end cover 101.
[0036] Specifically, the discharge port 103 includes a fine material outlet 103a and a coarse material outlet 103b. The fine material outlet 103a is arranged directly below the screening box 102, and the coarse material outlet 103b is arranged at the end of the screening box 102 away from the end cover 101. The gear plate 201a includes a rotating shaft 201a-1 and a feeding screw 201a-2. The feeding screw 201a-2 is fixedly connected to the rotating shaft 201a-1, and the rotating shaft 201a-1 is arranged at the end of the gear plate 201a.
[0037] Furthermore, the fixed bracket 201b is arranged on the side of the motor 201, and the fixed bracket 201b includes a matching rod 201b-1, which is movably matched with the fixed bracket 201b, and the matching rod 201b-1 includes a driving gear 201b-11 and a driven gear 201b-12, and the driving gear 201b-11 and the driven gear 201b-12 are both fixedly connected to the matching rod 201b-1, and the driving gear 201b-11 is meshed with the gear plate 201a.
[0038] When in use, the discharge port 103 is respectively provided with a fine material outlet 103a and a coarse material outlet 103b, which respectively collect materials of different degrees obtained by screening, and the motor 201 drives the gear plate 201a to rotate, and the gear plate 201a drives the rotating shaft 201a-1 to rotate, and the rotating shaft 201a-1 drives the feeding screw 201a-2 to perform a feeding operation, and feeds the material into the screening net 202. Due to the effect of the airflow, the material is screened inside the screening net 202, and the material is screened inside the screening net 202. 2 is rotated to make the material roll and distribute inside the screening net 202, so that the materials with different particle sizes are first layered, and then screened by the screening action of the screening net 202. The coarse material part after screening continues to move forward through the action of the feeding screw and enters the coarse material outlet 103b, and the fine material after screening enters the gap between the composite net 203 and the screening net 202. The gap size between the composite net 203 and the screening net 202 is limited to ensure normal passing through the screening net. The material on the sub-net 202 can pass through the composite net 203 normally again. At the same time, it is necessary to ensure that some irregular materials stuck in the screening net 202 can obtain the secondary screening effect of the composite net 203 when the screening net 202 and the composite net 203 interact with each other. Therefore, the gap between the composite net 203 and the screening net 202 should be slightly smaller than the aperture of the screening net 202 to facilitate normal screening. For materials with a diameter that is the same as the mesh size of the screening net 202, they can be crushed and screened again to obtain finer materials. When the shape and size of the fine materials are relatively regular, they can be screened out from the composite net 203. For those materials that just pass through the screening net 202 and are stuck in the screening net 202 due to their irregular shape and size, they are in the gap between the screening net 202 and the composite net 203. The relative movement between the composite net 203 and the screening net 202 will disassemble and crush the irregular materials, thereby ensuring the screening efficiency of the screening net 202 and reducing the frequency of cleaning the screening net 202.
[0039] Reference Figures 1 to 9 , which is the third embodiment of the present invention. This embodiment is different from the previous two embodiments in that this embodiment provides a horizontal airflow screening machine including a fixed bracket 201b arranged on the side of the motor 201, the fixed bracket 201b includes a matching rod 201b-1, the matching rod 201b-1 and the fixed bracket 201b are movably matched, the matching rod 201b-1 includes a driving gear 201b-11 and a driven gear 201b-12, the driving gear 201b-11 and the driven gear 201b-12 are both fixedly connected to the matching rod 201b-1, and the driving gear 201b-11 is meshed with the gear plate 201a.
[0040] Specifically, the screening net 202 includes a gear ring 202a, which is arranged on the outer circumference of the end of the screening net 202, the composite net 203 includes a matching ring 203a and a cam groove 203b, the matching ring 203a is arranged on the side of the composite net 203, the cam groove 203b is arranged on the outer circumference of the matching ring 203a, the matching ring 203a includes a gear ring 203a-1, the gear ring 203a-1 is arranged on the inner side of the cam groove 203b, the screening box 102 includes a sliding head 102a, the sliding head 102a is slidably matched with the cam groove 203b, the composite net 203 and the screening net 202 are coaxially rotated, there is a gap between the composite net 203 and the screening net 202, and the aperture sizes of the composite net 203 and the screening net 202 are equal.
[0041] In combination with the first two embodiments, when in use, the discharge port 103 is respectively provided with a fine material outlet 103a and a coarse material outlet 103b, respectively collecting materials of different degrees obtained by screening, the motor 201 drives the gear plate 201a to rotate, the gear plate 201a drives the rotating shaft 201a-1 to rotate, the rotating shaft 201a-1 drives the feeding screw 201a-2 to perform a feeding operation, and feeds the material into the screening net 202. Due to the effect of the airflow, the material is screened inside the screening net 202, and the material is first rolled and distributed inside the screening net 202 under the rotation of the screening net 202, so that the materials with different particle sizes are first layered, and then passed through the screening net 202. The screening effect of 02 is to screen, and the coarse material part after screening is continuously pushed forward by the action of the feeding screw and enters the coarse material outlet 103b, and the fine material after screening enters the gap between the composite net 203 and the screening net 202. When the shape and size of the fine material are relatively regular, it can be screened out from the composite net 203, and for those materials that just pass through the screening net 202 and are stuck in the screening net 202 due to their irregular shape and size, they are in the gap between the screening net 202 and the composite net 203. The relative movement between the composite net 203 and the screening net 202 will disassemble and crush the irregular materials, thereby ensuring the screening efficiency of the screening net 202 and reducing the frequency of cleaning the screening net 202.
[0042] In this embodiment, since the matching rod 201b-1 and the fixed bracket 201b are movably matched, the driving gear 201b-11 meshes with the gear plate 201a, and the driven gear 201b-12 meshes with the ring gear 1 202a and the ring gear 2 203a-1. Therefore, due to the mutual combination structure of the planetary gears, the rotation directions of the ring gear 1 202a and the ring gear 2 203a-1 are different, so the rotation directions of the screening net 202 and the composite net 203 are opposite. During rotation, the cam groove 203b and the sliding head 102a are slidably matched, so that the composite net 203 also generates a longitudinal reciprocating motion, which is combined with the radial rotational motion to form a composite reciprocating rotational motion, thereby Figure 7As can be seen from the figure, the shaded part is the "shear" interval generated by the relative position between the screening mesh 202 and the composite mesh 203. This interval changes back and forth during the movement to cut and screen the residual materials between the screening mesh 202 and the composite mesh 203 again, thereby improving the utilization of the materials and completing the cleaning of the screening mesh 202 to a certain extent, thereby reducing the cleaning frequency of the screening mesh 202. Figure 7 , 8 9, it can be concluded that when the composite net 203 and the screening net 202 move relative to each other, C1 is the overlapping part of mesh 1 202b and mesh 2 203c caused by the radial relative movement, which crushes and cuts the material through axial shearing. Similarly, C2 is the radially overlapping mesh, and C3 is the obliquely overlapping mesh. These three different types of overlap forms will be intermittently generated when the composite net 203 and the screening net 202 move relative to each other, and the material stuck between the screening net 202 and the composite net 203 will be crushed to complete the secondary screening.
[0043] To sum up, the horizontal airflow screening machine mentioned in the present invention is different from the drum screen of the traditional horizontal airflow screening machine. The present invention provides rotational power for the drum screen, so that during the screening process, the screening of the screen will not always be on one side of the screen, thereby improving the utilization rate of the screen. The composite screen set is installed on the outside of the screen, and the screening is first performed by the screen. When the screen is screened, some materials will adhere to the holes of the screen. When the composite screen moves relative to the screen, it can perform secondary screening on the materials attached to the screen holes through continuous reciprocating motion, thereby extending the service life of the screen. At the same time, the materials screened by the screen are more thorough, thereby improving the utilization efficiency of the material.
[0044] Furthermore, the double-mesh structure can increase the screening area, and the compound rotation can make the material more evenly distributed on the screen, thereby improving the screening efficiency of the screening machine. The compound rotation helps to disperse the material and reduce the risk of screen hole clogging, especially when dealing with sticky or wet materials. It can also be optimized according to the particle size of the material to improve the grading accuracy of the material. The compound rotation structure helps to reduce the wear of the screen and extend the service life of the screen. The double-mesh structure allows different types of materials to be screened, enhancing the adaptability of the equipment. The double-mesh compound rotation structure can reduce downtime caused by screen damage or clogging, thereby reducing maintenance costs.
[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A horizontal airflow screening machine, characterized in that: include, A housing (100), the housing (100) comprising an end cover (101), a screening box (102), a discharge port (103), a support leg (104) and a feed port (105), the end cover (101) being arranged on a side of the screening box (102), the discharge port (103) being arranged on a lower side of the screening box (102), the support leg (104) being arranged around the screening box (102), and the feed port (105) being arranged on a side of a top of the screening box (102) close to the end cover (101); and, A screening unit (200), the screening unit (200) comprising a motor (201), a screening net (202) and a composite net (203), the motor (201) being arranged on the inner side of an end cover (101), the screening net (202) being arranged on the inner side of a screening box (102), the composite net (203) coaxially cooperating with the screening net (202), the composite net (203) being arranged on the outer circumference of the screening net (202), the composite net (203) coaxially cooperating with the screening net (202) and the screening box (102), the motor (201) being fixedly connected to the end cover (101), the motor (201) coaxially cooperating with the screening box (102), and the motor (201) comprising a gear plate ( The invention relates to a motor (201a) and a fixed bracket (201b), wherein the gear plate (201a) is arranged at the end of the motor (201), the gear plate (201a) comprises a rotating shaft (201a-1) and a feeding screw (201a-2), the feeding screw (201a-2) is fixedly connected to the rotating shaft (201a-1), the rotating shaft (201a-1) is arranged at the end of the gear plate (201a), the fixed bracket (201b) is arranged on the side of the motor (201), the fixed bracket (201b) comprises a matching rod (201b-1), the matching rod (201b-1) is movably matched with the fixed bracket (201b), and the matching rod (201b-1) comprises a driving gear (201b The active gear (201b-11) and the driven gear (201b-12) are both fixedly connected to the matching rod (201b-1), the active gear (201b-11) is meshed with the gear plate (201a), the screening net (202) comprises a gear ring (202a) and a mesh hole (202b), the gear ring (202a) is arranged on the outer circumference of the end of the screening net (202), the mesh hole (202b) is arranged in an array on the surface of the screening net (202), and the composite net (203) comprises a matching ring (203a), a cam groove (203b) and a mesh hole (203c), the matching ring (203a) is arranged on the composite net ( The composite mesh (203) is provided on the side of the composite mesh (203), the cam groove (203b) is arranged on the outer circumference of the matching ring (203a), the mesh hole 2 (203c) array is arranged on the surface of the composite mesh (203), the matching ring (203a) includes a gear ring 2 (203a-1), the gear ring 2 (203a-1) is arranged on the inner side of the cam groove (203b), the screening box (102) includes a sliding head (102a), the sliding head (102a) and the cam groove (203b) are slidably matched, the composite mesh (203) and the screening mesh (202) are coaxially rotatable, there is a gap between the composite mesh (203) and the screening mesh (202), and the aperture sizes of the composite mesh (203) and the screening mesh (202) are equal.
2. The horizontal airflow screening machine according to claim 1, characterized in that: The discharge port (103) comprises a fine material outlet (103a) and a coarse material outlet (103b), wherein the fine material outlet (103a) is arranged directly below the screening box (102), and the coarse material outlet (103b) is arranged at an end of the screening box (102) away from the end cover (101).