High-frequency airflow screening machine
Through the high-frequency airflow screening machine combined with vibration conveying and airflow sorting technology, the problems of resource shortage, unstable quality and environmental pollution in sand and gravel screening are solved, and efficient and accurate material screening and environmental protection effects are achieved.
Patent Information
- Application Number
- CN202420943257.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing sand and gravel screening technology has problems such as resource shortage, unstable quality, environmental pollution and low screening efficiency, especially when the quality of sand and gravel aggregates is strictly required and the amount of use is huge in large-scale projects.
Adopt a high-frequency airflow screening machine, combined with vibration conveying and dispersing technology, through airflow sorting and high-frequency vibration screening structure, equipped with a blower that intelligently adjusts the air volume and adjustable air filling ports, uses polyurethane or stainless steel screen, and uses a tensioner. Simplify the disassembly and assembly of screens and improve screening efficiency and accuracy.
It realizes efficient and accurate material screening, suitable for material treatment less than 13mm, reduces screening pressure, improves environmental protection effect and screening efficiency, and simplifies the screen replacement process.
Smart Images
Figure CN222197882U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material screening, in particular to a high-frequency airflow screening machine. Background Art
[0002] At present, large-scale or special construction projects have strict requirements on the quality of sand and gravel aggregates and use huge amounts of them. Natural sand and gravel are difficult to meet the requirements: natural sand and gravel resources are over-consumed and the supply is gradually in short supply; natural sand is of poor quality and unstable, and the price is high, and the low value and regionality are particularly obvious; due to the need for environmental protection, the mining of river sand and mountain sand is gradually reduced or banned. Under this general trend, the mining and use of machine-made sand is increasing.
[0003] The existing production process of machine-made sand is basically as follows: large-size stones are crushed into sand and gravel mixtures by vertical shaft impact crushers, oversize materials are screened through the first layer of screens for return, coarse and fine particles are screened through coarse-aperture screens for discharge, and small-size materials and stone powder are screened and discharged through the last layer of screens. Among them, oversize materials and large-size materials account for a large proportion, and small-size materials and stone powder also account for a large proportion; oversize materials and large-size materials will be contaminated with stone powder for return and discharge, among which oversize materials will be returned for processing again, and large-size materials will be directly discharged with some dust, which is not conducive to meeting environmental standards; at the same time, a large proportion of stone powder will increase the burden of screening and affect screening efficiency. Utility Model Content
[0004] The purpose of the utility model is to provide a high-frequency airflow screening machine to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-frequency airflow screening machine, comprising a powder selection chamber, a high-frequency screen, a dust removal system and a material dropping assembly;
[0006] A feed port is provided on one side of the top of the powder selection chamber, and a horizontal material distributor is installed on the top of the feed port, and a dust removal port is provided on the other side of the top of the powder selection chamber, and the dust removal port is connected to the dust removal system;
[0007] A blower is arranged outside one end of the powder selection chamber, and the air outlet of the blower is connected to the powder selection chamber through an air inlet reducer, and the blower air duct outlet is arranged at the uppermost end of the feed inlet at the top of the powder selection chamber, and two wind shield adjustment flaps are arranged on the inner wall of the powder selection chamber.
[0008] Furthermore, a screen cover is installed on the top of the high-frequency screen, and a screen inspection window is arranged inside the screen cover, and an adjustable air supply port is arranged on the screen inspection window, a coarse particle collection chute is arranged on the inner wall of the screen cover, a partition is welded on the inner wall flow channel of the coarse particle collection chute, and a coarse particle filter is arranged on the top of the coarse particle collection chute corresponding to the air supply port position, and the screen surface of the high-frequency screen is in an inclined state, and the inclination angle is from degrees to degrees.
[0009] Furthermore, the inner wall of the high-frequency screen is provided with multiple groups of screens from top to bottom, and two groups of excitation beams are installed at the lower end of the screens, and there are 3-4 groups of excitation beams under the screens at the top of the first layer. The excitation beams are connected to the inner side of the high-frequency screen through shear springs, and tensioning shafts are provided between the screens. A screen tensioner is installed at the outer end of the tensioning shaft. A material blocking flap is provided at the end of the multiple groups of screens, and a double exciter and a triple exciter are respectively installed at the bottom of the excitation beams.
[0010] Furthermore, a coarse particle dropping pipe, a fine particle dropping pipe, a finished product hopper and a finished product dropping pipe are installed at the bottom of the dropping assembly, and an inspection door is provided on the outside of one end of the finished product hopper, a partition is welded on the inner wall flow channel of the finished product hopper, and an air supply port is opened on the outside of one end of the finished product dropping pipe.
[0011] Furthermore, a handle is installed at one end of the wind shield adjustment flap, and the wind shield adjustment flap is connected to the powder selection chamber through a fixed plate, a wear-resistant plate is installed on the inner wall of the wind shield adjustment flap, a rotating hole is opened at the center position of the bottom end of the wind shield adjustment flap, and a rotating shaft is installed in the rotating hole, and one end of the rotating shaft is connected to the handle.
[0012] Furthermore, the material blocking flap 1 and the material blocking flap 2 include a turning handle installed on the outer side of one end of the high-frequency screen, and a rotating rod is installed at one end of the turning handle, and a material blocking partition is installed on the outer wall of the rotating rod.
[0013] Furthermore, the horizontal material distribution machine includes a frame installed on the feed port, a scattering plate is installed between the frames, and an exciting motor is installed at one end of the frame.
[0014] Furthermore, the inclination angle of the entire high-frequency screen is 35-43 degrees, and can be configured accordingly according to the size of the screened raw materials and the size of the raw materials. The number of screen layers arranged from top to bottom inside the high-frequency screen is - layers, and the number of screens arranged in each layer is 1-5 pieces.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The high-frequency airflow screening machine combines vibration conveying and dispersion, airflow sorting and high-frequency vibration screening structure, with high screening efficiency and high precision, and is suitable for screening and filtering of materials less than 13mm. The blower can intelligently adjust the air volume, control the screening wind force, and clean the surface of the machine-made sand at the same time. The design of the air inlet improves the efficiency of powder selection and reduces the screening pressure. The screen passes through a polyurethane or stainless steel screen to prevent hole blockage and improve screening efficiency. The screen tensioner is used to tension the screen, which facilitates the disassembly and assembly of the screen, making screen replacement convenient and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is an internal schematic diagram of the utility model;
[0018] Figure 2 It is a front view schematic diagram of the utility model;
[0019] Figure 3 This is a schematic diagram of a horizontal material placing machine of the utility model;
[0020] Figure 4 This is a schematic diagram of a material blocking flap of the utility model;
[0021] Figure 5 This is a schematic diagram of a windshield flap of the utility model;
[0022] Figure 6 for Figure 2 A magnified view of middle;
[0023] Figure 7 It is a schematic diagram of the principle of the utility model.
[0024] In the figure: 1. Wind-blocking adjustment flap; 3. Inspection window on the screen; 4. Coarse particle filter; 5. Coarse particle collection chute; 6. Material-blocking flap 1; 7. Triple vibrator; 8. Screen; 9. Screen tensioner; 10. Dual vibrator; 11. Material-blocking flap 2; 12. Air supply port; 101. Blower; 102. Air inlet reducer; 104. Horizontal material distributor; 106. Powder selection chamber; 107. High-frequency screen ; 108, screen cover; 1011, fine particle drop pipe; 1012, coarse particle drop pipe; 1014, finished product hopper; 1015, finished product drop pipe; 1041, frame; 1042, scattering plate; 1043, vibration motor; 111, lever; 112, rotating shaft; 113, wear-resistant plate; 114, fixed plate; 611, turning handle; 612, rotating rod; 613, material blocking partition. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: a high-frequency airflow screening machine, including a powder selection chamber 106, a high-frequency screen 107, a dust removal system and a material dropping assembly;
[0027] A feed port is provided on one side of the top of the powder selection chamber 106, and a horizontal distributor 104 is installed on the top of the feed port, and a dust removal port is provided on the other side of the top of the powder selection chamber 106, and the dust removal port is connected to the dust removal system;
[0028] A blower 101 is arranged on the outside of one end of the powder selection chamber 106, and the air outlet end of the blower 101 is connected to the powder selection chamber 106 through an air inlet reducer 102, and the air duct outlet of the blower 101 is arranged at the uppermost end of the top feed port of the powder selection chamber 106, and two wind shield adjustment flaps 1 are arranged on the inner wall of the powder selection chamber 106.
[0029] A screen cover 108 is installed on the top of the high-frequency screen 107, and a screen inspection window 3 is arranged in the screen cover 108, and an adjustable air supply port 12 is arranged on the screen inspection window 3, a coarse particle collection chute 5 is arranged on the inner wall of the screen cover 108, a partition is welded on the inner wall flow channel of the coarse particle collection chute 5, and a coarse particle filter 4 is arranged on the top of the coarse particle collection chute 5 corresponding to the air supply port 12, and the screen surface of the high-frequency screen 107 is in an inclined state, and the inclination angle is 35 to 43 degrees.
[0030] The inner wall of the high-frequency screen 107 is provided with multiple groups of screens 8 from top to bottom, and two groups of exciting beams are installed at the lower end of the screens 8, and there are 3-4 groups of exciting beams below the screens 8 at the top of the first layer. The exciting beams are connected to the inner side of the high-frequency screen 107 through shear springs, and a tensioning shaft is arranged between the screens 8. A screen tensioner 9 is installed at the outer end of the tensioning shaft. A material blocking flap 6 is arranged at the end of the multiple groups of screens 8, and a double exciter 10 and a triple exciter 7 are respectively installed at the bottom of the exciting beam.
[0031] A coarse particle dropping pipe 1012, a fine particle dropping pipe 1011, a finished product hopper 1014 and a finished product dropping pipe 1015 are installed at the bottom of the dropping assembly, and an inspection door is set on the outside of one end of the finished product hopper 1014, a partition is welded on the inner wall flow channel of the finished product hopper 1014, and an air supply port 12 is opened on the outside of one end of the finished product dropping pipe 1015.
[0032] A handle 111 is installed at one end of the windshield adjustment flap 1, and the windshield adjustment flap 1 is connected to the powder selection chamber 106 through a fixed plate 114. A wear-resistant plate 113 is installed on the inner wall of the windshield adjustment flap 1. A rotating hole is opened at the center position of the bottom end of the windshield adjustment flap 1, and a rotating shaft 112 is installed in the rotating hole. One end of the rotating shaft 112 is connected to the handle 111.
[0033] The material blocking flap 1 6 and the material blocking flap 2 11 include a turning handle 611 installed on the outer side of one end of the high-frequency screen 107, and a rotating rod 612 is installed at one end of the turning handle 611, and a material blocking partition 613 is installed on the outer wall of the rotating rod 612.
[0034] The horizontal material distributor 104 includes a frame 1041 installed on the material feed port, a scattering plate 1042 is installed between the frames 1041, and a vibration motor 1043 is installed at one end of the frame 1041.
[0035] The entire high-frequency screen 107 has an inclination angle of 35-43 degrees, and can be configured accordingly according to the size of the screened raw materials. The number of screens 8 arranged from top to bottom inside the high-frequency screen 107 is 1-4 layers, and the number of screens 8 arranged in each layer is 1-5 pieces.
[0036] It should be noted that the selected materials are evenly distributed through the horizontal distributor 104 and enter the powder selection chamber 106. The materials are instantly dispersed by the air flow blown out by the blower 101 when they fall from the entrance of the powder selection chamber 106. The materials are blown to different distances according to their weights, with coarse particles closer and fine particles farther away. Figure 1 In the intervals A, B, C, D, and E shown in the figure, the angle of the wind-blocking adjustment flap 1 is adjusted by adjusting the lever 111, so that the scattering direction or area of fine-particle materials can be controlled to prevent fine particles from entering the dust removal system together with dust, and the flow rate of coarse-particle materials into the coarse-particle chute 5 can be controlled to reduce the screening pressure. The remaining materials all enter the high-frequency screen 107 for high-frequency vibration screening. The high-frequency screen 107 rotates through the eccentric block of the vibration motor to make the screen 8 produce high-frequency vibration, start material stratification, then material separation occurs, and finally complete the screening of large and small particles; the angles of the material-blocking flap 1 6 and the material-blocking flap 2 11 are adjusted by controlling the turning handle 611 to control the flow direction of the material after screening; the size of the air flow entering the system is controlled by adjusting the opening and closing size of the air supply port 12, and the dust in the coarse and fine particles is blown into the dust removal system, and the screened materials flow out through the fine-particle drop pipe 1011, the coarse-particle drop pipe 1012 and the finished product drop pipe 1015, that is, the material airflow classification screening is completed.
[0037] Each group of exciting beams is connected to the side plates of the box body through shear springs at both ends, and coarse and fine material hoppers and finished product hoppers are arranged at the bottom of the machine body. The coarse and fine material hoppers can be connected to drop materials or drop materials separately. The air supply port 12 arranged at the outlet of the finished product hopper can adjust the size of the air supply port 12 so that the remaining dust mixed in the finished product material flows to the dust removal port to improve the dust removal efficiency. The dust adhering to the screen can also be blown to the dust removal port together through the screen 8 by the air flow to reduce the screening burden. The fine particle material can also be blown upward to make it stagnate in the air. The time is longer, and the screening accuracy and efficiency are improved. A coarse particle filter is provided on the inner wall of the high-frequency sieve cover 108, above the coarse particle collection chute 5, and corresponding to the air supply port position of the inspection window. The air flow enters the bottom of the powder selection chamber 106 through the air supply port 12 on the inspection window 3 of the high-frequency sieve cover. A part of the air flows upward directly through the air duct at the coarse particle adjustment flap into the powder selection chamber 106, and the other part enters through this filter, so that a small part of fine particles and dust mixed in the coarse particles can be sorted out again, thereby improving the screening accuracy.
[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.
Claims
1. High frequency airflow screening machine, characterized in that: It includes a powder selection chamber (106), a high-frequency screen (107), a dust removal system and a material dropping assembly; A feed inlet is provided on one side of the top of the powder selection chamber (106), and a horizontal material distributor (104) is installed on the top of the feed inlet. A dust removal port is provided on the other side of the top of the powder selection chamber (106), and the dust removal port is connected to a dust removal system. A blower (101) is arranged outside one end of the powder selection chamber (106), and the air outlet end of the blower (101) is connected to the powder selection chamber (106) through an air inlet reducer (102), and the air duct outlet of the blower (101) is arranged at the uppermost end of the feed opening at the top of the powder selection chamber (106), and two wind shield adjustment flaps (1) are arranged on the inner wall of the powder selection chamber (106).
2. The high-frequency airflow screening machine according to claim 1, characterized in that: A screen cover (108) is installed on the top of the high-frequency screen (107), and a screen inspection window (3) is arranged inside the screen cover (108), and an adjustable air supply port (12) is arranged on the screen inspection window (3). A coarse particle collection chute (5) is arranged on the inner wall of the screen cover (108), a partition is welded to the inner wall flow channel of the coarse particle collection chute (5), and a coarse particle filter (4) is arranged on the top of the coarse particle collection chute (5) at a position corresponding to the air supply port (12), and the screen surface of the high-frequency screen (107) is in an inclined state, and the inclination angle is 35 degrees to 43 degrees.
3. The high-frequency airflow screening machine according to claim 1, characterized in that: The inner wall of the high-frequency screen (107) is provided with multiple groups of screens (8) from top to bottom, and two groups of exciting beams are installed at the lower end of the screens (8), and there are 3-4 groups of exciting beams below the screens (8) at the top of the first layer. The exciting beams are connected to the inner side of the high-frequency screen (107) through shear springs, and a tensioning shaft is provided between the screens (8). A screen tensioner (9) is installed at the outer end of the tensioning shaft. A material blocking flap (6) is provided at the end of the multiple groups of screens (8), and a double exciter (10) and a triple exciter (7) are respectively installed at the bottom end of the exciting beam.
4. The high-frequency airflow screening machine according to claim 1, characterized in that: A coarse particle dropping pipe (1012), a fine particle dropping pipe (1011), a finished product hopper (1014) and a finished product dropping pipe (1015) are installed at the bottom of the dropping assembly, and an inspection door is arranged on the outer side of one end of the finished product hopper (1014), a partition is welded to the inner wall flow channel of the finished product hopper (1014), and an air supply port (12) is opened on the outer side of one end of the finished product dropping pipe (1015).
5. The high-frequency airflow screening machine according to claim 1, characterized in that: A lever (111) is installed at one end of the windshield adjustment flap (1), and the windshield adjustment flap (1) is connected to the powder selection chamber (106) via a fixed plate (114); a wear-resistant plate (113) is installed on the inner wall of the windshield adjustment flap (1); a rotating hole is opened at the center of the bottom end of the windshield adjustment flap (1), and a rotating shaft (112) is installed in the rotating hole, and one end of the rotating shaft (112) is connected to the lever (111).
6. The high-frequency airflow screening machine according to claim 3, characterized in that: The material blocking flap 1 (6) and the material blocking flap 2 (11) include a turning handle (611) mounted on the outer side of one end of the high-frequency screen (107), and a rotating rod (612) is mounted on one end of the turning handle (611), and a material blocking partition (613) is mounted on the outer wall of the rotating rod (612).
7. The high-frequency airflow screening machine according to claim 1, characterized in that: The horizontal material distributor (104) comprises a frame (1041) installed on a material inlet, a scattering plate (1042) is installed between the frames (1041), and a vibration motor (1043) is installed at one end of the frame (1041).
8. The high-frequency airflow screening machine according to claim 1, characterized in that: The entire high-frequency screen (107) has an inclination angle of 35-43 degrees, and can be configured accordingly according to the size of the raw materials to be screened and the size of the raw materials. The number of screens (8) arranged from top to bottom inside the high-frequency screen (107) is 1-4 layers, and the number of screens (8) arranged in each layer is 1-5 pieces.