A high-efficiency screening device and preparation method of diatomaceous earth filler for rubber

Abstract

The present invention discloses an efficient screening device for diatomaceous earth filler for rubber, comprising an equipment frame, a screening drum and a driving mechanism, wherein a pressure supply assembly, a purge assembly and a suction assembly are arranged on the equipment frame, the screening drum comprises a first rotating shaft, a first filter screen, a second filter screen and a third filter screen, the first filter screen, the second filter screen and the third filter screen are fixedly mounted on the first rotating shaft, the first rotating shaft is rotatably connected to the equipment frame, the pressure supply assembly comprises a compression sleeve, a compression piston and a first compression spring, the compression piston is mounted in the compression sleeve and elastically connected to the compression sleeve through the first compression spring. The purpose of the present invention is to provide an efficient screening device for diatomaceous earth filler for rubber and a preparation method thereof, which has the advantages of high screening efficiency, high degree of automation and not easy to be blocked, and solves the problem in the prior art that diatomaceous earth screening equipment is easy to be blocked, which affects the screening efficiency of diatomaceous earth and thus affects the rubber production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a high-efficiency screening device for diatomaceous earth filler for rubber and a preparation method thereof. Background Art

[0002] Diatomaceous earth is a natural mineral. Due to its unique porous structure, good adsorption performance and chemical stability, it is widely used in chemical, food, medicine, environmental protection and other fields. Especially in the rubber industry, diatomaceous earth, as an important filler, can improve the physical properties of rubber products, such as improving wear resistance and anti-aging ability.

[0003] However, before diatomaceous earth is used as a filler, it must be strictly screened to ensure that its particle size meets specific application requirements. Traditional screening equipment can often only perform particle size classification in a single way, and multiple operations are required to complete the separation of materials of different particle sizes, which is time-consuming and labor-intensive. During the screening process, fine diatomaceous earth particles are easy to clog the sieve holes, affecting the screening efficiency and even causing equipment failure. Most traditional screening equipment relies on manual operation and has a low level of automation, which makes it difficult to meet the requirements of modern industrial production for high efficiency and stability. Therefore, an efficient screening device and preparation method for diatomaceous earth filler for rubber are needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an efficient screening device and a preparation method of diatomaceous earth filler for rubber, which has the advantages of high screening efficiency, high degree of automation and not easy to be blocked, and solves the problem that diatomaceous earth screening equipment in the prior art is easy to be blocked, affecting the screening efficiency of diatomaceous earth and thus affecting the rubber production efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: an efficient screening device for diatomaceous earth filler for rubber, comprising an equipment frame, a screening drum and a driving mechanism, wherein a pressure supply component, a purge component and a suction component are arranged on the equipment frame;

[0006] The screening drum comprises a first rotating shaft, a first filter screen, a second filter screen and a third filter screen, wherein the first filter screen, the second filter screen and the third filter screen are fixedly mounted on the first rotating shaft, and the first rotating shaft is rotatably connected to the equipment frame;

[0007] The pressure supply assembly comprises a compression sleeve, a compression piston and a first compression spring, wherein the compression piston is installed in the compression sleeve and elastically connected to the compression sleeve via the first compression spring;

[0008] The purge assembly includes a main air pipe, a bronchial pipe and a percussion nozzle, wherein the bronchial pipe is installed on the lower end surface of the main air pipe and is connected thereto, the percussion nozzle is fixedly installed on the lower end surface of the bronchial pipe, and the main air pipe is connected thereto and is connected thereto;

[0009] The suction assembly includes a suction hopper, a telescopic tube, a second compression spring and a discharge hopper, wherein the discharge hopper is connected to the suction hopper through the telescopic tube, and the top of the suction hopper is in contact with the bottom of the screening drum;

[0010] The driving mechanism includes a motor, a first synchronous wheel, a second synchronous wheel, a third synchronous wheel, a fourth synchronous wheel, a first synchronous belt, a second synchronous belt, a first cam, a second cam and a transmission shaft. The driving mechanism drives the screening drum, the pressure assembly and the suction assembly.

[0011] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, a dust cover is provided on the top of the equipment frame, a feeding port is provided on the side of the dust cover, a collecting hopper is provided on the bottom of the equipment frame, a discharge port is provided on the collecting hopper, the filtration apertures of the first filter screen, the second filter screen and the third filter screen increase successively, the height of the equipment frame gradually decreases from the first filter screen end to the second filter screen end, the first synchronous wheel is fixedly mounted on the output shaft of the motor, the second synchronous wheel is fixedly mounted on the first rotating shaft, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission.

[0012] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, an exhaust pipe is arranged on the top of the compression sleeve, a ventilation pipe is arranged on the top of the compression piston, a first exhaust port is arranged on the side wall of the exhaust pipe, an air inlet and a second exhaust port are arranged on the side wall of the ventilation pipe, the outer diameter of the ventilation pipe is equal to the inner diameter of the exhaust pipe, and a one-way air inlet valve is arranged on the top of the compression sleeve.

[0013] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, an extension rod is provided at the bottom of the compression piston, a pulley cooperating with a first cam is provided at the bottom of the extension rod, a protrusion is provided on the surface of the first cam, the number of the protrusions is three, and three groups of the protrusions are evenly arrayed on the outside of the cam, the bronchus is an arc-shaped structure, and the central angle corresponding to the bronchus is one hundred and twenty degrees.

[0014] As a preferred efficient screening device for diatomaceous earth filler for rubber of the present invention, the knocking nozzle includes a nozzle, a knocking ball, a third compression spring, a slide plate and a traction rope. The slide plate is installed in the nozzle and elastically connected to the nozzle through the third compression spring. The upper and lower ends of the traction rope are fixedly installed on the slide plate and the knocking ball. The slide plate is a mesh structure.

[0015] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, a guide plate and a first valve plate are arranged in the suction hopper, the first valve plate is installed at the lower end of the guide plate, a second rotating shaft is arranged on the top of the first valve plate, the first valve plate is rotatably connected to the suction hopper through the second rotating shaft, the bottom of the first valve plate is fitted with the side wall of the suction hopper, a second valve plate is arranged inside the discharge hopper, a third rotating shaft is arranged on the top of the second valve plate, the second valve plate is rotatably connected to the discharge hopper through the third rotating shaft, and a limiting protrusion fitted with the second valve plate is arranged on the inner end surface of the bottom of the discharge hopper.

[0016] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, first side plates are provided on both sides of the discharge hopper, second side plates are provided on both sides of the suction hopper, guide rods are provided on the first side plates, guide holes matching the guide rods are provided on the second side plates, the second compression spring is sleeved on the guide rods, and the second cam is in contact with the bottom of the first side plate.

[0017] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, the second cam is installed on the transmission shaft, the fourth synchronous wheel is installed on the transmission shaft, the third synchronous wheel is installed on the rotating shaft, and the third synchronous wheel and the fourth synchronous wheel are driven by a second synchronous belt.

[0018] As a preferred high-efficiency screening device for diatomaceous earth filler for rubber of the present invention, a partition is provided in the collecting hopper, and the partition is located at the connection between the first filter screen, the second filter screen and the third filter screen.

[0019] A method for preparing a high-efficiency screening device for diatomaceous earth filler for rubber comprises the following steps:

[0020] Step 1: Raw material preparation: first, you need to collect or purchase suitable diatomaceous earth raw materials;

[0021] Step 2: Raw material pretreatment: the raw materials usually need to be dried to remove moisture, which helps the subsequent screening and mixing process;

[0022] Step 3, raw material screening, the collected raw materials are put into the screening drum of the above equipment for screening, and the raw materials are screened into three categories: fine material, medium material and coarse material;

[0023] Step 4: Mix the auxiliary materials. According to the different requirements of rubber products, select raw materials and auxiliary materials with suitable particle sizes for stirring and mixing.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention provides three layers of filter screens with different apertures on the screening drum, which means that multiple classifications of diatomaceous earth filler can be completed simultaneously in a single screening process, greatly simplifying the process flow. By screening with filter screens of different apertures, it can be ensured that each batch of diatomaceous earth filler is classified according to a predetermined particle size range, which is beneficial to controlling the quality and consistency of the final product. The first layer of filter screen is used to screen out the finest diatomaceous earth powder, which can be directly used in certain application scenarios that require delicate filling. The second layer of filter screen is used to screen particles with medium particle sizes, which may be more suitable for some applications that require good fluidity but cannot be too fine. The third layer of filter screen is used to screen out larger particles or fragments, which may require further processing or be used in specific applications.

[0026] 2. The present invention completes the regular purge action of the screening drum through the cooperation of the purge component and the pressure component, which can effectively remove the materials accumulated on the screen, prevent the screen holes from being blocked, and ensure that the screening efficiency is not affected. Regular purge can maintain smooth airflow during the screening process, making the screening results more stable and reliable. The pressure component generates high-pressure air through the compression piston, and the high-pressure air is transported to the knocking nozzle through the main air pipe. The knocking nozzle will periodically knock on the surface of the screening drum under the action of the high-pressure air to help remove the materials adhering to the screen. This purge mechanism is realized by mechanical linkage, which ensures the regularity and effectiveness of the purge action.

[0027] 3. The present invention can accelerate the speed of fine particles passing through the screen through the periodic suction action of the suction component, which is particularly important when processing finer materials. It can further optimize the screening process to ensure that all particles can pass through the corresponding screen smoothly as expected. The suction component is tightly fitted with the bottom of the screening drum through the suction hopper and is connected to the discharge hopper through the telescopic tube. When the discharge hopper squeezes the telescopic tube upward, positive pressure is formed in the telescopic tube to discharge the material. When the telescopic tube rebounds, negative pressure is formed at the upper end of the suction hopper to help fine particles pass through the screen faster.

[0028] 4. The present invention realizes the automatic operation of the screening drum, the pressure supply assembly and the suction assembly through the driving mechanism, which reduces the need for manual operation and reduces the labor cost. The automatic drive makes the whole screening process more coherent and smooth, reduces the interruption and waiting time caused by manual operation, and improves the overall production efficiency. The driving mechanism includes motors, synchronous wheels, synchronous belts and other components. The whole system is driven by the motor. The precisely designed synchronous wheels and synchronous belt transmission mechanism ensure the coordinated operation of the various components, and ensure the stability and continuity of the screening process. The automated drive system enables the equipment to work stably for a long time, which is particularly suitable for large-scale production environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 An exploded view of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the matching state of the screening drum and the driving mechanism of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 It is a front cross-sectional view of the present invention;

[0034] Figure 6 For the present invention Figure 5 Middle BB section;

[0035] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle;

[0036] Figure 8 For the present invention Figure 6 Enlarged view of point D in the middle;

[0037] Fig. 9 For the present invention Figure 6 Enlarged view of point E in the middle.

[0038] In the figure: 1. Equipment frame; 101. Dust cover; 102. Collecting hopper; 103. Feeding port; 104. Discharging port; 105. Partition; 2. Screening drum; 201. First rotating shaft; 202. First filter screen; 203. Second filter screen; 204. Third filter screen; 3. Pressure supply assembly; 301. Compression sleeve; 3011. Exhaust pipe; 3012. First exhaust port; 3013. One-way air inlet valve; 302. Compression piston; 3021. Ventilation pipe; 30211. Air inlet; 30212. Second exhaust port; 3022. Extension rod; 3023. Pulley; 303. First compression spring; 4. Purge assembly; 401. Main air pipe; 402. Bronchial pipe; 403. Knocking nozzle; 4031. Nozzle; 4032. Knocking ball; 4033. Slide plate ; 4034, third compression spring; 4035, traction rope; 5, suction assembly; 501, suction hopper; 5011, guide plate; 5012, first valve plate; 50121, second rotating shaft; 5013, second side plate; 5014, guide hole; 502, telescopic tube; 503, second compression spring; 504, discharge hopper; 5041, second valve plate; 50411, third rotating shaft; 5042, limiting protrusion; 5043, first side plate; 5044, guide rod; 6, driving mechanism; 601, motor; 602, first synchronous wheel; 603, second synchronous wheel; 604, third synchronous wheel; 605, fourth synchronous wheel; 606, first synchronous belt; 607, second synchronous belt; 608, first cam; 609, second cam; 610, transmission shaft. DETAILED DESCRIPTION Example

[0039] See also Figure 1-Figure 9 , a high-efficiency screening device for diatomite filler for rubber, comprising an equipment frame 1, a screening drum 2 and a driving mechanism 6, wherein a pressure supply component 3, a purge component 4 and a suction component 5 are arranged on the equipment frame 1;

[0040] The screening drum 2 comprises a first rotating shaft 201, a first filter screen 202, a second filter screen 203 and a third filter screen 204, wherein the first filter screen 202, the second filter screen 203 and the third filter screen 204 are fixedly mounted on the first rotating shaft 201, and the first rotating shaft 201 is rotatably connected to the equipment frame 1;

[0041] The pressure supply assembly 3 includes a compression sleeve 301, a compression piston 302 and a first compression spring 303. The compression piston 302 is installed in the compression sleeve 301 and elastically connected to the compression sleeve 301 through the first compression spring 303.

[0042] The purge assembly 4 includes a main air pipe 401, a bronchial pipe 402 and a knocking nozzle 403. The bronchial pipe 402 is installed on the lower end surface of the main air pipe 401 and is connected thereto. The knocking nozzle 403 is fixedly installed on the lower end surface of the bronchial pipe 402. The main air pipe 401 is connected thereto.

[0043] The suction assembly 5 includes a suction hopper 501, a telescopic tube 502, a second compression spring 503 and a discharge hopper 504. The discharge hopper 504 is connected to the suction hopper 501 through the telescopic tube 502. The top of the suction hopper 501 is in contact with the bottom of the screening drum 2.

[0044] The driving mechanism 6 includes a motor 601, a first synchronous wheel 602, a second synchronous wheel 603, a third synchronous wheel 604, a fourth synchronous wheel 605, a first synchronous belt 606, a second synchronous belt 607, a first cam 608, a second cam 609 and a transmission shaft 610. The driving mechanism 6 drives the screening drum 2, the pressure assembly 3 and the suction assembly 5.

[0045] The material is added into the screening drum 2, and the screening drum 2 is driven to rotate by the driving mechanism 6, so that the screening drum 2 drives the material to roll. At the same time, the pressure mechanism provides high-pressure air to the purge mechanism to purge the screening drum 2 to prevent the screening filter from being blocked. At the same time, the material is sucked by the suction component 5 to improve the efficiency of the material passing through the filter.

[0046] Furthermore, a dust cover 101 is provided on the top of the equipment frame 1, a feeding port 103 is provided on the side of the dust cover 101, a collecting hopper 102 is provided at the bottom of the equipment frame 1, a discharge port 104 is provided on the collecting hopper 102, the filtering apertures of the first filter screen 202, the second filter screen 203 and the third filter screen 204 increase successively, and the height of the equipment frame 1 gradually decreases from the end of the first filter screen 202 to the end of the second filter screen 203, the first synchronous wheel 602 is fixedly installed on the output shaft of the motor 601, the second synchronous wheel 603 is fixedly installed on the first rotating shaft 201, and the first synchronous wheel 602 and the second synchronous wheel 603 are connected by a synchronous belt transmission.

[0047] The first rotating shaft 201 is driven to rotate by the motor 601, thereby driving the screening drum 2 to rotate, so that the screening drum 2 screens the diatomaceous earth inside, and the diatomaceous earth powder passes through the first filter screen 202 and enters the discharge hopper 504, the small diatomaceous earth particles pass through the second filter screen 203 and enter the discharge hopper 504, and the large particles of diatomaceous earth pass through the third filter screen 204 and enter the discharge hopper 504, and then are discharged from each discharge port 104.

[0048] Furthermore, an exhaust pipe 3011 is provided on the top of the compression sleeve 301, a ventilation pipe 3021 is provided on the top of the compression piston 302, a first exhaust port 3012 is provided on the side wall of the exhaust pipe 3011, an air inlet 30211 and a second exhaust port 30212 are provided on the side wall of the ventilation pipe 3021, the outer diameter of the ventilation pipe 3021 is equal to the inner diameter of the exhaust pipe 3011, and a one-way air inlet valve 3013 is provided on the top of the compression sleeve 301.

[0049] When the compression piston 302 is squeezed upward, the compression piston 302 moves upward, thereby compressing the air in the compression sleeve 301. When the first exhaust port 3012 coincides with the second exhaust port 30212, the high-pressure air in the compression sleeve 301 is quickly discharged from the first exhaust port 3012 and the second exhaust port 30212 through the air inlet 30211, thereby entering the main air pipe 401 to supply air to the purge component 4, and then rebounds under the resetting action of the first compression spring 303, and inhales air from the one-way air inlet valve 3013 to prepare for the next purge.

[0050] Furthermore, an extension rod 3022 is provided at the bottom of the compression piston 302, and a pulley 3023 cooperating with the first cam 608 is provided at the bottom of the extension rod 3022. The surface of the first cam 608 is provided with three protrusions, and the three groups of protrusions are evenly arrayed on the outside of the cam. The bronchus 402 is an arc-shaped structure, and the central angle corresponding to the bronchus 402 is one hundred and twenty degrees.

[0051] The first rotating shaft 201 drives the first cam 608 to rotate, so that the raised part on the surface of the first cam 608 squeezes the extension rod 3022, and the compression piston 302 reciprocates up and down under the action of the first compression spring 303 and the first cam 608, so that the pressure supply component 3 intermittently passes high-pressure air to the purge component 4 to purge the top of the screening drum 2. When the first rotating shaft 201 rotates one circle, the pressure supply component 3 supplies air three times, and each time the knocking nozzle 403 on the bronchial pipe 402 purges one-third of the surface of the screening drum 2, so that the purge component 4 can purge the entire screening drum 2 when the screening drum 2 rotates one circle.

[0052] Furthermore, the knocking nozzle 403 includes a nozzle 4031, a knocking ball 4032, a third compression spring 4034, a slide plate 4033 and a traction rope 4035. The slide plate 4033 is installed in the nozzle 4031 and elastically connected to the nozzle 4031 through the third compression spring 4034. The upper and lower ends of the traction rope 4035 are fixedly installed on the slide plate 4033 and the knocking ball 4032. The slide plate 4033 is a mesh structure.

[0053] When high-pressure air enters the nozzle 4031, the knocking ball 4032 is ejected outward under the action of air pressure, causing the slide plate 4033 to squeeze the third compression spring 4034 to slide downward. At the same time, the knocking ball 4032 hits the screening drum 2 to vibrate it, thereby enhancing the purging effect on the screening drum 2, and keeping the filter holes of the screening drum 2 transparent, thereby further improving the screening effect. When the airflow stops, the knocking ball 4032 rebounds under the resetting action of the third compression spring 4034, preparing for the next knocking.

[0054] Furthermore, a guide plate 5011 and a first valve plate 5012 are provided in the suction hopper 501, the first valve plate 5012 is installed at the lower end of the guide plate 5011, a second rotating shaft 50121 is provided on the top of the first valve plate 5012, the first valve plate 5012 is rotatably connected to the suction hopper 501 through the second rotating shaft 50121, the bottom of the first valve plate 5012 is fitted with the side wall of the suction hopper 501, a second valve plate 5041 is provided inside the discharge hopper 504, a third rotating shaft 50411 is provided on the top of the second valve plate 5041, the second valve plate 5041 is rotatably connected to the discharge hopper 504 through the third rotating shaft 50411, and a limiting protrusion 5042 fitted with the second valve plate 5041 is provided on the inner end surface of the bottom of the discharge hopper 504.

[0055] When the discharge hopper 504 squeezes the telescopic tube 502 upward, the air pressure in the compression tube increases, and the first valve plate 5012 remains in contact with the suction hopper 501 under the action of the air pressure, and the second valve plate 5041 flips outward under the action of the air pressure, so that the diatomaceous earth powder in the telescopic tube 502 is discharged outward. When the discharge hopper 504 rebounds under the reset action of the second compression spring 503, a negative pressure state is formed in the telescopic tube 502, and the first valve plate 5012 flips inward under the action of the air pressure, thereby sucking the bottom of the screening drum 2, increasing the powder filtration rate, and causing the powder to flow unidirectionally from the suction hopper 501 to the discharge hopper 504.

[0056] Furthermore, first side plates 5043 are provided on both sides of the discharge hopper 504, second side plates 5013 are provided on both sides of the suction hopper 501, guide rods 5044 are provided on the first side plate 5043, guide holes 5014 cooperating with the guide rods 5044 are provided on the second side plate 5013, the second compression spring 503 is sleeved on the guide rods 5044, and the second cam 609 is fitted with the bottom of the first side plate 5043.

[0057] When the second cam 609 rotates, the first side plate 5043 intermittently squeezes the second compression spring 503 under the action of the second cam 609, so that the suction hopper 501 and the discharge hopper 504 intermittently squeeze the telescopic tube 502 to perform suction and discharge.

[0058] Further, the second cam 609 is mounted on the transmission shaft 610 , the fourth synchronous wheel 605 is mounted on the transmission shaft 610 , the third synchronous wheel 604 is mounted on the rotating shaft, and the third synchronous wheel 604 and the fourth synchronous wheel 605 are driven by a second synchronous belt 607 .

[0059] The motor 601 drives the rotating shaft to rotate, and the third synchronous wheel 604, the fourth synchronous wheel 605 and the second synchronous belt 607 cooperate to drive the transmission shaft 610 to rotate, thereby driving the second cam 609 to rotate, so that the second cam 609 drives the discharge hopper 504 to reciprocate up and down.

[0060] Furthermore, a partition 105 is provided in the collecting hopper 102 , and the partition 105 is located at the connection between the first filter screen 202 , the second filter screen 203 and the third filter screen 204 , and corresponding partitioning is also performed in the suction component 5 .

[0061] The space inside the collecting hopper 102 is divided by the partition 105, so as to avoid the materials of different diameters from being mixed again after screening, thereby improving the screening accuracy. Example

[0062] See also Figure 1-Figure 9 , a method for preparing a high-efficiency screening device for diatomaceous earth filler for rubber, comprising the following steps:

[0063] Step 1: Raw material preparation: first, you need to collect or purchase suitable diatomaceous earth raw materials;

[0064] Step 2: Raw material pretreatment: the raw materials usually need to be dried to remove moisture, which helps the subsequent screening and mixing process;

[0065] Step 3, raw material screening, the collected raw materials are put into the screening drum 2 of the above equipment for screening, and the raw materials are screened into three categories: fine material, medium material and coarse material;

[0066] Step 4: Mix the auxiliary materials. According to the different requirements of rubber products, select raw materials and auxiliary materials with suitable particle sizes for stirring and mixing.

[0067] The specific operation process in step 3 is as follows:

[0068] Add material, open the feeding port 103 on the side of the dust cover 101 on the top of the equipment frame 1, and put the pre-treated diatomaceous earth raw material into the screening drum 2;

[0069] Start the device, start the motor 601, the motor 601 drives the rotating shaft to rotate through the first synchronous wheel 602, the second synchronous wheel 603 and the first synchronous belt 606, thereby driving the screening drum 2 to rotate, and at the same time drives the first cam 608 to rotate. The rotation of the screening drum 2 makes the diatomaceous earth raw material inside roll with the rotation of the drum, which helps the raw material to better contact the filter screens at each level;

[0070] Blowing and vibration: As the first cam 608 rotates, it periodically pushes the compression piston 302 through the extension rod 3022. The up and down movement of the compression piston 302 generates high-pressure air, which is transmitted to the knocking nozzle 403 through the main air pipe 401 and the bronchial pipe 402. The high-pressure air causes the knocking ball 4032 to hit the drum wall in the nozzle 4031, generating vibration, preventing the filter from being blocked and improving the screening efficiency.

[0071] Screening: The diatomite raw material moves in the drum as the drum rotates. The fine particles first pass through the first filter screen 202 and fall into the discharge hopper 504; the slightly larger particles then pass through the second filter screen 203; and the largest particles finally pass through the third filter screen 204 and are discharged;

[0072] Auxiliary suction, through the cooperation of the third synchronous wheel 604, the fourth synchronous wheel 605 and the second synchronous belt 607, the transmission shaft 610 is driven to rotate. The design of the telescopic tube 502 and the discharge hopper 504 drives the second cam 609 to rotate when the transmission shaft 610 rotates. The discharge hopper 504 moves up and down under the action of the second cam 609, so that the internal part of the telescopic tube 502 generates periodic positive and negative pressure changes, which helps fine particles to pass through the filter more smoothly and be collected in the corresponding discharge hopper 504;

[0073] Finally, diatomaceous earth of different particle sizes are discharged from the discharge ports 104 of the respective collecting hoppers 102. Since a partition 105 is provided in the collecting hopper 102, diatomaceous earth of different particle sizes will not be mixed, thus ensuring the screening effect.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient screening device for diatomaceous earth filler for rubber, comprising a device frame (1), a screening drum (2) and a driving mechanism (6), characterized in that: The equipment frame (1) is provided with a pressure supply component (3), a purge component (4) and a suction component (5); The screening drum (2) comprises a first rotating shaft (201), a first filter screen (202), a second filter screen (203) and a third filter screen (204); the first filter screen (202), the second filter screen (203) and the third filter screen (204) are fixedly mounted on the first rotating shaft (201); and the first rotating shaft (201) is rotatably connected to the equipment frame (1); The pressure supply assembly (3) comprises a compression sleeve (301), a compression piston (302) and a first compression spring (303); the compression piston (302) is installed in the compression sleeve (301) and elastically connected thereto via the first compression spring (303); The purge assembly (4) comprises a main air pipe (401), a bronchial pipe (402) and a percussion nozzle (403); the bronchial pipe (402) is mounted on the lower end surface of the main air pipe (401) and is in continuous connection therewith; the percussion nozzle (403) is fixedly mounted on the lower end surface of the bronchial pipe (402); and the main air pipe (401) is in continuous connection with the compression sleeve (301); The suction assembly (5) comprises a suction hopper (501), a telescopic tube (502), a second compression spring (503) and a discharge hopper (504); the discharge hopper (504) is connected to the suction hopper (501) via the telescopic tube (502); the top of the suction hopper (501) is in contact with the bottom of the screening drum (2); The driving mechanism (6) comprises a motor (601), a first synchronous wheel (602), a second synchronous wheel (603), a third synchronous wheel (604), a fourth synchronous wheel (605), a first synchronous belt (606), a second synchronous belt (607), a first cam (608), a second cam (609) and a transmission shaft (610), and the driving mechanism (6) drives the screening drum (2), the pressure supply assembly (3) and the suction assembly (5); A guide plate (5011) and a first valve plate (5012) are provided in the suction hopper (501); the first valve plate (5012) is installed at the lower end of the guide plate (5011); a second rotating shaft (50121) is provided at the top of the first valve plate (5012); the first valve plate (5012) is rotatably connected to the suction hopper (501) via the second rotating shaft (50121); the bottom of the first valve plate (5012) is connected to the suction hopper The side wall of the discharge hopper (501) is fitted, a second valve plate (5041) is arranged inside the discharge hopper (504), a third rotating shaft (50411) is arranged on the top of the second valve plate (5041), the second valve plate (5041) is rotatably connected to the discharge hopper (504) via the third rotating shaft (50411), and a limiting protrusion (5042) fitted with the second valve plate (5041) is arranged on the inner end surface of the bottom of the discharge hopper (504); First side plates (5043) are provided on both sides of the discharge hopper (504), second side plates (5013) are provided on both sides of the suction hopper (501), a guide rod (5044) is provided on the first side plate (5043), a guide hole (5014) matched with the guide rod (5044) is provided on the second side plate (5013), the second compression spring (503) is sleeved on the guide rod (5044), and the second cam (609) is in contact with the bottom of the first side plate (5043).

2. The high-efficiency screening device for diatomaceous earth filler for rubber according to claim 1, characterized in that: A dust cover (101) is arranged on the top of the equipment frame (1), a feeding port (103) is arranged on the side of the dust cover (101), a collecting hopper (102) is arranged on the bottom of the equipment frame (1), a discharging port (104) is arranged on the collecting hopper (102), the filtering apertures of the first filter screen (202), the second filter screen (203) and the third filter screen (204) increase in sequence, the height of the equipment frame (1) gradually decreases from the first filter screen (202) end to the second filter screen (203) end, the first synchronous wheel (602) is fixedly mounted on the output shaft of the motor (601), the second synchronous wheel (603) is fixedly mounted on the first rotating shaft (201), and the first synchronous wheel (602) and the second synchronous wheel (603) are connected by a synchronous belt transmission.

3. The high-efficiency screening device for diatomaceous earth filler for rubber according to claim 1, characterized in that: An exhaust pipe (3011) is arranged at the top of the compression sleeve (301), a ventilation pipe (3021) is arranged at the top of the compression piston (302), a first exhaust port (3012) is arranged on the side wall of the exhaust pipe (3011), an air inlet (30211) and a second exhaust port (30212) are arranged on the side wall of the ventilation pipe (3021), an outer diameter of the ventilation pipe (3021) is equal to an inner diameter of the exhaust pipe (3011), and a one-way air inlet valve (3013) is arranged on the top of the compression sleeve (301).

4. The high-efficiency screening device for diatomaceous earth filler for rubber according to claim 1, characterized in that: An extension rod (3022) is provided at the bottom of the compression piston (302), and a pulley (3023) cooperating with the first cam (608) is provided at the bottom of the extension rod (3022). The bronchus (402) is an arc-shaped structure, and the central angle corresponding to the bronchus (402) is one hundred and twenty degrees.

5. The high-efficiency screening device for diatomaceous earth filler for rubber according to claim 1, characterized in that: The second cam (609) is mounted on the transmission shaft (610), the fourth synchronous wheel (605) is mounted on the transmission shaft (610), the third synchronous wheel (604) is mounted on the rotating shaft, and the third synchronous wheel (604) and the fourth synchronous wheel (605) are driven by a second synchronous belt (607).

6. The high-efficiency screening device for diatomaceous earth filler for rubber as claimed in claim 2, characterized in that: A partition plate (105) is provided inside the collecting hopper (102), and the partition plate (105) is located at the connection between the first filter screen (202), the second filter screen (203) and the third filter screen (204).

7. A method for preparing a high-efficiency screening device for diatomaceous earth filler for rubber, applicable to a high-efficiency screening device for diatomaceous earth filler for rubber as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Raw material preparation: first, you need to collect or purchase suitable diatomaceous earth raw materials; Step 2: Raw material pretreatment: the raw materials usually need to be dried to remove moisture, which helps the subsequent screening and mixing process; Step 3, raw material screening, the collected raw materials are put into the screening drum (2) of the above equipment for screening, and the raw materials are screened into three categories: fine material, medium material and coarse material; Step 4: Mix the auxiliary materials. According to the different requirements of rubber products, select raw materials and auxiliary materials with suitable particle sizes for stirring and mixing.

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