Novel material screening machine

Abstract

The invention discloses a novel material screening machine which comprises a rack (9), a bin hopper (1), a screening frame (22), a screening discharging opening (14), a material receiving box (13) and a motor (7). A sieve tray (19) is arranged in the sieve frame (22); the material receiving box (13) is arranged below the screening discharge hole (14); the novel material screening machine is provided with a screen vibration adjusting device (20). The novel material screening machine controls the screen vibration adjusting device (20) through the control system, and then the vibration direction and amplitude of the screen tray (19) are adjusted. By adopting the technical scheme, the vibration frequency and amplitude of the sieve tray can be accurately controlled, so that more accurate material screening is realized; secondly, the control system can automatically adjust the vibration frequency and amplitude of the motor according to the distribution condition of the materials, and manual intervention is not needed; and the sensor can detect the distribution condition of the materials, so that more accurate material screening is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of granular material screening equipment, and in particular relates to a new type of material screening machine. Background Art

[0002] Traditional material screening machines usually use mechanical vibration or air flow separation to screen materials. These methods have some disadvantages:

[0003] For example, the vibration frequency and amplitude of the vibrating screening machine are difficult to control; the efficiency of air flow separation is affected by the air flow velocity and material density.

[0004] Using keywords such as "material; screening; frequency; amplitude" to search the existing public technical literature, the following search results were obtained:

[0005] 1. Chinese patent document: "Full amplitude support high frequency linear vibrating screen", patent (application) number: 201310267027.2, the technical solution recorded is:

[0006] "Full-amplitude supported high-frequency linear vibrating screen, multi-section screens are installed on the screen bracket in a transverse arc tension, two vibrators or vibration motors are installed on the horizontal and vertical vibrator seat plates in the middle of the vibration beam, and the vibration resultant force line passes through the center of gravity of the screen box. The screen box is connected to the full-amplitude elastic support seat installed on the base frame through four square ear shafts. The full-amplitude elastic support seat is composed of upper and lower supports and rubber springs. The square ear shaft is located between the upper and lower rubber springs; the base frame is connected to the foundation through a secondary vibration reduction device. A sealed mud material box is set at the feeding end of the screen box on the base frame";

[0007] The technical effects recorded are:

[0008] "It solves the problem that the existing high-frequency vibrating screen has insufficient vibration frequency and cannot meet production needs. It has the characteristics of high vibration frequency, large vibration intensity and screening material production capacity. It can be widely used in iron ore ball mill grinding, oil drilling mud and other fine-mesh wet materials, coal, and chemical mesh-level materials for precise screening."

[0009] 2. Chinese patent document: "A vibration screening machine for medicinal materials", patent (application) number: 201620186540.8, the technical solution recorded is:

[0010] "A vibrating screening machine for medicinal materials, comprising a trough body, a vibrating mechanism, a frame and a motor, wherein the vibrating mechanism is mounted on the frame, the vibrating mechanism comprising a small A-type double-groove pulley and a large A-type double-groove pulley, the small A-type double-groove pulley and the large A-type double-groove pulley are connected by a V-belt, the small A-type double-groove pulley is connected to the motor, an eccentric shaft is arranged on the large A-type double-groove pulley, a connecting rod is arranged between the eccentric shaft and the trough body, and a vibrating support is arranged between the trough body and the frame";

[0011] The technical effects recorded are:

[0012] "Because the screening machine has a large vibration frequency and small amplitude, it makes little noise and runs smoothly when working. It is not easy to be damaged, has a long service life, and reduces costs. At the same time, the large vibration frequency makes it difficult for materials to get stuck in the net during the screening process, ensuring the continuous progress of the screening work."

[0013] However, the technical solutions recorded in the above-mentioned public technical documents have not been able to solve the problems and defects of the prior art, namely, "the vibration frequency and amplitude of the vibrating screening machine are difficult to control; the efficiency of airflow separation is affected by the airflow velocity and material density".

[0014] Therefore, a new type of material screening machine is needed that can more accurately separate and screen materials of different particle sizes. Summary of the invention

[0015] The invention provides a novel material screening machine, the purpose of which is to achieve accurate adjustment and control of the vibration frequency and amplitude of a sieve plate.

[0016] In order to achieve the above object, the technical solution adopted by the present invention is:

[0017] The novel material screening machine of the present invention comprises a frame, a bin, a screen frame, a screening discharge port, a material receiving box, and a motor; a screen plate is arranged in the screen frame; the material receiving box is arranged below the screening discharge port; the novel material screening machine is provided with a screen vibration adjustment device; the novel material screening machine controls the screen vibration adjustment device through a control system, thereby adjusting the vibration direction and amplitude of the screen plate.

[0018] The control system controls the rotation speed of the motor, thereby adjusting the vibration frequency of the sieve plate.

[0019] The regulating device is provided with an eccentric disk and an eccentric connecting rod; the eccentric disk is installed on a pulley; the motor is connected to the pulley through a screen vibration transmission belt; the eccentric connecting rod is connected to the sieve plate through a sieve plate connecting plate.

[0020] A sensor is arranged on the screen frame, and the sensor is a photoelectric sensor, and is connected with the control system through a signal circuit.

[0021] The sieve plate comprises two layers of sieves which are arranged in parallel and spaced apart from each other, and the mesh size of the upper sieve is larger than the mesh size of the lower sieve.

[0022] The hopper and the material receiving box are respectively arranged at two ends of the frame; the screen is arranged obliquely and is located at one end of the hopper higher than the end of the material receiving box.

[0023] The novel material screening machine is provided with a fan, and the fan pipe on the fan is connected to the blowing port; the blowing port is arranged below the material discharge port of the bin; the motor is connected to the rotating shaft of the fan through the fan transmission belt

[0024] The screen frame is hoisted on the frame through four screen frame connecting rods and a screen frame shaft.

[0025] The sieve plate is connected to the sieve frame through five-star hand-tightening bolts.

[0026] The lower part of the hopper is a material discharge port of the hopper; a hopper material discharge adjustment plate is arranged on the material discharge port of the hopper; and the material discharge amount of the hopper is adjusted by adjusting the upper and lower positions of the material discharge adjustment plate.

[0027] The screening discharge port is divided into three discharge forks, and correspondingly, the receiving box is divided into three receiving cavities.

[0028] The present invention adopts the above technical scheme, the vibration frequency and amplitude of the sieve plate can be precisely controlled, thereby achieving more accurate material screening; secondly, the control system can automatically adjust the vibration frequency and amplitude of the motor according to the distribution of the material without manual intervention; the sensor can detect the distribution of the material, thereby achieving more accurate material screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The contents shown in the attached drawings and the symbols in the drawings are briefly described as follows:

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the screen frame, screen plate and screening outlet of the present invention;

[0032] Figure 3 It is a schematic diagram of the fan structure of the present invention.

[0033] The markings in the figure are:

[0034] 1. Bin, 2. Bin support plate, 3. Screen frame connecting rod, 4. Fan, 5. Tensioning wheel, 6. Fan drive belt, 7. Motor, 8. Screen vibration drive belt, 9. Frame, 10. Protective cover, 11. Eccentric disk, 12. Pulley, 13. Material receiving box, 14. Screen discharge port, 15. Screen frame shaft, 16. Five-star hand-tightening bolt, 17. Sensor, 18. Eccentric connecting rod, 19. Screen plate, 20. Screen vibration adjustment device, 21. Bin unloading adjustment plate, 22. Screen frame, 23. Screen plate connecting plate, 24. Fan bearing seat, 25. Fan bearing pressing plate, 26. Fan blade, 27. Fan pipe, 28. Bin unloading port, 29. Blowing port. DETAILED DESCRIPTION

[0035] The specific implementation modes of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0036] like Figures 1 to 3 The structure of the present invention is a new type of material screening machine, which is a machine equipment for separating materials, usually used to process powdered, granular or liquid materials. It can screen out the required materials according to different screen hole sizes and shapes, and exclude the materials that do not meet the requirements. Common screening machines include vibrating screens, centrifugal screens, pressure screens, cyclone screens, etc. They are widely used in chemical, food, pharmaceutical, metallurgical, building materials and other industries.

[0037] The novel material screening machine of the present invention comprises a frame 9, a bin 1, a screen frame 22, a screening outlet 14, a material receiving box 13, and a motor 7; a screen plate 19 is arranged in the screen frame 22; and the material receiving box 13 is arranged below the screening outlet 14. The bin 1 is fixedly mounted on the frame 9 through a bin support plate 2.

[0038] A warehouse opening is provided on the upper side of the screen frame 22, a material drop opening is provided on the bottom wall of the screen frame 22, and the screen plates are rotatably arranged on a mounting frame, on which a driving assembly for driving a plurality of screen plates to deflect downward simultaneously is arranged.

[0039] In order to solve the problems existing in the prior art and overcome its defects, and realize the invention purpose of accurately adjusting and controlling the vibration frequency and amplitude of the sieve plate, the technical solution adopted by the present invention is:

[0040] like Figures 1 to 3 As shown, the novel material screening machine of the present invention is provided with a screen vibration regulating device 20; the novel material screening machine controls the screen vibration regulating device 20 through a control system, thereby regulating the vibration direction and amplitude of the screen plate 19.

[0041] The vibration frequency and amplitude of the present invention can be precisely controlled, thereby achieving more accurate material screening; secondly, the control system can automatically adjust the vibration frequency and amplitude of the motor according to the distribution of the material without manual intervention.

[0042] The control system controls the rotation speed of the motor 7 and thereby adjusts the vibration frequency of the sieve plate 19 .

[0043] The adjusting device 20 is provided with an eccentric disk 11 and an eccentric connecting rod 18; the eccentric disk 11 is installed on the pulley 12; the motor 7 is connected to the pulley 12 through the screen vibration transmission belt 8; the eccentric connecting rod 18 is connected to the sieve plate 19 through the sieve plate connecting plate 23.

[0044] The pulley 12 and the eccentric wheel 11 are installed at both ends of the shaft to complete coaxial rotation, and the eccentric connecting rod 18 is connected through the eccentric wheel 11 to drive the screen frame 22 to vibrate.

[0045] The power of the material screening machine is provided by the motor 7, which vibrates the transmission belt 8 through the screen, so that the pulley 12 and the eccentric connecting rod 18 act simultaneously, driving the screen frame 22 to vibrate, thereby achieving the purpose of separating materials.

[0046] The control system is used to control the vibration frequency and amplitude of the motor 7 .

[0047] The screen frame 22 is provided with a sensor 17, which is a photoelectric sensor and is connected to a control system through a signal circuit.

[0048] The sensor 17 can detect the distribution of materials on the screen and transmit the detection results to the control system. The control system automatically adjusts the speed of the motor 7 according to the detection results, and then adjusts the vibration frequency; the adjustment device 20 automatically adjusts the amplitude of the screen frame 22 to achieve more accurate material screening.

[0049] The motor is provided with a screen vibration regulating device 20 which cooperates with a sensor 17 on the screen frame 22 to regulate the vibration frequency and amplitude of the screen frame 22 .

[0050] The sieve plate 19 comprises two layers of sieves which are arranged in parallel and spaced apart from each other, and the mesh size of the upper sieve is larger than the mesh size of the lower sieve.

[0051] A mounting frame is fixedly provided inside the screen frame 22, and two upper and lower screen plates 19 are provided on the mounting frame, which can more accurately separate and screen materials of different particle sizes to prevent waste of particles that meet the requirements;

[0052] The sieve plate 19 below is mainly used to screen the particles that meet the specifications and are missed after the upper filtration, so as to prevent the waste of particles that meet the specifications;

[0053] The hopper 1 and the material receiving box 13 are respectively arranged at two ends of the frame 9; the screen is arranged obliquely and is located at one end of the hopper 1 which is higher than the material receiving box 13.

[0054] See also Figure 1 and Figure 3 :

[0055] The novel material screening machine is provided with a fan 4, a fan pipe 27 of the fan 4 is connected to a blowing port 29; the blowing port 29 is arranged below a bin discharge port 28; the motor 7 is connected to a rotating shaft of the fan 4 through a fan transmission belt 6, and drives the fan to operate through the fan transmission belt 6.

[0056] The fan 4 is installed on the frame 9 through the fan bearing seat 24 to fix the position of the fan 4, and the fan blades 26 are driven by the belt wheel to operate so that the fan 4 can work normally.

[0057] The fan bearing pressing piece 25 presses the fan bearing onto the fan housing.

[0058] The screen vibration drive belt 8 and the fan drive belt 6 are tensioned by the tensioning wheel 5 respectively to prevent the belts from loosening and falling off after long-term use.

[0059] See also Figure 1 and Figure 2 :

[0060] The screen frame 22 is hoisted on the frame 9 through four screen frame connecting rods 3 and a screen frame shaft 15.

[0061] The screen frame shaft 15 is supported on the frame 9, and the screen frame connecting rod 3 is installed on the screen frame 22 to ensure that the screen frame 22 works normally and completes the screening of materials.

[0062] The sieve plate 19 is mounted on the sieve frame 22 via a five-star hand-tightening bolt 16 and a connecting rod.

[0063] The lower part of the hopper 1 is a hopper discharge opening 28 ; a hopper discharge adjustment plate 21 is provided on the hopper discharge opening 28 ; the discharge amount of the hopper 1 is adjusted by adjusting the upper and lower positions of the discharge adjustment plate 21 .

[0064] A hopper material discharge adjustment plate 21 is installed on the side of the hopper 1, and the hopper material discharge adjustment plate 21 is used to control the material feed amount.

[0065] The screening discharge port 14 is divided into three discharge forks, and correspondingly, the receiving box 13 is divided into three receiving chambers.

[0066] The three receiving chambers receive materials of three different particle sizes respectively.

[0067] A material drop port is provided on the bottom wall of the screen frame 22, and the screen frame 22 is arranged on the frame 9, driving the upper and lower screen plates 19 to deflect and shake left and right at the same time. A plurality of material discharge ports 14 are provided on the side wall of the screening box, and each material discharge port 14 is connected to a material box 13, which is a push-pull type, so that the staff can take the material conveniently.

[0068] The side wall of the material screening machine is provided with a protective cover 10 to prevent the material from being ejected and the potential safety hazards caused by the high-speed operation of the pulley.

[0069] The working mode of the material screening machine of the present invention is:

[0070] The material is placed into the screen, the control system and the motor 7 are started, and the vibration frequency and amplitude of the screen frame 22 are adjusted and controlled by the motor 7 according to parameters such as the particle size and density of the material.

[0071] After screening, the materials are separated into different particle sizes and output according to different particle sizes.

[0072] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A novel material screening machine, comprising a frame (9), a bin (1), a screen frame (22), a screening outlet (14), a material receiving box (13), and a motor (7); a screen plate (19) is arranged in the screen frame (22); the material receiving box (13) is arranged below the screening outlet (14); and the characteristics are: The novel material screening machine is provided with a screen vibration regulating device (20); the novel material screening machine controls the screen vibration regulating device (20) through a control system, thereby regulating the vibration direction and amplitude of the screen plate (19).

2. The novel material screening machine according to claim 1 is characterized in that: The control system controls the rotation speed of the motor (7) and thereby adjusts the vibration frequency of the sieve plate (19).

3. The novel material screening machine according to claim 2 is characterized in that: The adjusting device (20) is provided with an eccentric disk (11) and an eccentric connecting rod (18); the eccentric disk (11) is installed on a pulley (12); the motor (7) is connected to the pulley (12) through a screen vibration transmission belt (8); the eccentric connecting rod (18) is connected to the sieve plate (19) through a sieve plate connecting plate (23).

4. The novel material screening machine according to claim 1 is characterized in that: A sensor (17) is arranged on the screen frame (22). The sensor (17) is a photoelectric sensor and is connected to a control system via a signal circuit.

5. The novel material screening machine according to claim 1 is characterized in that: The sieve plate (19) comprises two layers of sieves which are arranged in parallel and spaced apart from each other, and the mesh size of the upper sieve is larger than the mesh size of the lower sieve.

6. The novel material screening machine according to claim 5 is characterized in that: The hopper (1) and the material receiving box (13) are respectively arranged at two ends of the frame (9); the screen is arranged obliquely and is located at one end of the hopper (1) higher than the end of the material receiving box (13).

7. The novel material screening machine according to claim 1 is characterized in that: The novel material screening machine is provided with a fan (4), a fan pipe (27) of the fan (4) is connected to an air blowing port (29); the air blowing port (29) is arranged below a bin discharge port (28); and the motor (7) is connected to a rotating shaft of the fan (4) via a fan transmission belt (6).

8. The novel material screening machine according to claim 1 is characterized in that: The screen frame (22) is hoisted on the frame (9) via four screen frame connecting rods (3) and a screen frame shaft (15).

9. The novel material screening machine according to claim 1 is characterized in that: The sieve plate (19) is connected to the sieve frame (22) via five-star hand-tightening bolts (16).

10. The novel material screening machine according to claim 1 is characterized in that: The lower part of the hopper (1) is a hopper discharge opening (28); a hopper discharge adjustment plate (21) is arranged on the hopper discharge opening (28); and the discharge amount of the hopper (1) is adjusted by adjusting the upper and lower positions of the discharge adjustment plate (21).

Images