Chemical raw material screening device

Abstract

The utility model discloses a chemical raw material screening device, which relates to the technical field of screening devices, and comprises a frame body and a motor, a notch is formed in one side face of the screening barrel, a first spring is fixedly connected to the notch, a screening plate is arranged on the first spring, screening holes are formed in the screening plate, a tapping plate is fixedly connected to one end of the screening plate, a transmission shaft is fixedly connected to an output shaft of the motor, and a dust collection assembly is arranged at one end of the transmission shaft; one end of the transmission shaft is provided with a vibration structure. The vibrating structure continuously presses the tapping plate at one end of the screening plate, the tapping plate drives the screening plate to press the first spring, and the vibrating structure periodically presses the tapping plate, so that raw materials can be screened on the screening plate. And meanwhile, the motor rotates to drive the transmission shaft to rotate, the transmission of the transmission shaft drives the dust collection part to generate suction force to twitch dust generated in the discharging cavity, dust removal is conducted while screening is achieved, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a chemical raw material screening device. Background Art

[0002] Chemical raw materials are the raw materials necessary for the manufacture of chemical products. There are many types of chemical raw materials, including organic compounds, inorganic compounds and elements. Organic compounds include hydrocarbons, alcohols, ketones, etc., while inorganic compounds include oxides, sulfides, chlorides, etc. These raw materials are widely used in the production of various fields, such as medicine, plastics, coatings, cosmetics, pesticides, fertilizers, etc. Their application range covers all aspects of daily life and plays a vital role in the development of society and economy.

[0003] In the production process of chemical raw materials, the pretreatment of bulk raw materials is an indispensable part. In order to improve production efficiency and product quality, these raw materials are usually finely crushed by a crusher and then enter the screening stage. In the screening process, vibrating screens are widely used for their high efficiency and accuracy. The working principle of the vibrating screen relies on the driving force of the motor. Through vibration, the material moves in a jumping manner on the screen. The oversize and undersize materials of different specifications can be accurately discharged from their corresponding outlets, thereby achieving separation.

[0004] In the prior art, a Chinese patent with publication number CN212791840U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: it includes a shell, and a telescopic motor is provided, so that the telescopic motor drives the screen frame to reciprocate, so that the raw materials are screened on the screen, and a second servo motor and a first servo motor are provided. The first servo motor drives the brush to rotate, so as to facilitate the cleaning of the lower surface of the screen and avoid the adsorption of finer raw materials on the lower surface of the screen. The second servo motor drives the slider to move on the slide rail, so that the brush moves, improves the cleaning effect of the screen, and is convenient to use. However, during screening, dust will not only adhere to the surface of the screen but may also be scattered into the air. Some chemical raw materials have certain toxicity. Raw material dust is dispersed in the air together with the dust, which will have an impact on the health of the staff. Utility Model Content

[0005] The purpose of the utility model is to provide a chemical raw material screening device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A chemical raw material screening device comprises a frame and a motor; a screening cylinder is fixedly provided on the upper end of the frame, and the bottom end of the screening cylinder is connected to the bottom end of the frame to form a material discharge chamber; a feed port is provided on one side of the screening cylinder; a slot penetrating through the next side is provided on one side of the screening cylinder, a first spring is fixedly connected to the slot, a screening plate is provided on the first spring, screening holes are provided on the screening plate, a knocking plate is fixedly connected to one end of the screening plate, a transmission shaft is fixedly connected to the motor output shaft, a dust suction assembly is provided at one end of the transmission shaft, and the dust suction assembly is used to absorb dust in the material discharge chamber; a vibration structure is also provided at one end of the transmission shaft, and the vibration structure is used to drive the screening plate to vibrate.

[0008] When screening raw materials, first input the raw materials from the feed port, then start the motor, and a vibration structure is provided on the transmission shaft. The vibration structure continuously presses the knocking plate at one end of the screen plate, and the knocking plate drives the screen plate to press the first spring. The vibration structure periodically presses the knocking plate so that when the screen plate is not affected by the vibration structure, it will rebound through the elastic force of the contraction of the first spring, thereby vibrating the screen plate, so that the raw materials can be screened on the screen plate. At the same time, the rotation of the motor drives the transmission shaft to rotate. The transmission shaft is provided with a dust suction component, which drives the dust suction component to generate suction through the transmission of the transmission shaft to draw out the dust generated in the feeding chamber.

[0009] A further improvement of the technical solution of the utility model is that: the vibration structure includes a cam, and the cam is fixedly connected to the transmission shaft; the cam is overlapped with the knocking plate.

[0010] The above technical solution is adopted, in which the transmission shaft drives the eccentric rotation, and the end of the cam with a longer rotation radius presses the knocking plate, and the knocking plate descends, driving the screen plate to descend and compressing the first spring.

[0011] The further improvement of the technical solution of the utility model is that: the dust suction assembly includes a piston cylinder, a piston is arranged in the piston cylinder, a piston rod is fixedly connected to the piston, a pressure plate is fixedly arranged at the bottom end of the piston rod, a second spring is arranged between the bottom end of the piston cylinder and the pressure plate, and the second spring is sleeved on the piston rod; the upper end of the piston cylinder is fixedly connected to a dust suction pipe and an exhaust pipe, a one-way valve is arranged in the dust suction pipe and the exhaust pipe, and a dust suction hood is fixedly connected to one end of the dust suction pipe, and the dust suction hood is a funnel-shaped small at the top and large at the bottom. An adsorption box is arranged at one end of the exhaust pipe, and the adsorption box can adsorb dust discharged from the exhaust pipe.

[0012] The above-mentioned technical scheme is adopted, in which the end with a longer rotating radius of the cam will squeeze the pressure plate, causing the pressure plate to rise. The rise of the pressure plate drives the piston to rise, compressing the second spring. When the second spring rebounds, it drives the piston back to its original position, reduces the internal air pressure of the piston, and generates a negative pressure at the dust hood, thereby adsorbing the dust in the feeding chamber. Both the dust suction pipe and the exhaust pipe are provided with one-way valves. The one-way valve in the dust suction pipe only allows gas to flow into the piston cylinder, while the one-way valve in the exhaust pipe only allows gas to flow out of the piston cylinder. After the dust is sucked into the exhaust pipe, the piston rises and drives the dust to be discharged into the adsorption box, and the dust is adsorbed and purified by the adsorption box.

[0013] A further improvement of the technical solution of the utility model is that: the utility model provides a technical solution: preferably, the screen plate is slidably connected to the slot, the screen plate is symmetrically provided with limit plates, the limit plates and the screen plate are hinged, and the screen plate is slidably connected to the inner wall of the feed cavity.

[0014] The above-mentioned technical scheme is adopted, in which the raw materials on the screen plate can be blocked by a limit plate to prevent the raw materials from falling from the slot during the screening process; and the limit plate and the screen plate are hinged by a torsion spring. When the screen plate needs to be cleaned, it is only necessary to slide and pull the screen plate in the direction of the motor, and the side wall of the feed cavity will block the limit plate, so that the limit plate compresses the torsion spring. While the limit plate compresses the torsion spring, the upper end of the limit plate also rotates in the horizontal direction of the screen plate until the limit plate is parallel to the screen plate. At this time, the limit plate can be pulled out of the slot together with the screen plate, and when it is reinstalled, it can be slid and inserted into the slot at one end of the principle motor in the same way.

[0015] A further improvement of the technical solution of the utility model is that: a material spreading structure is fixedly connected to one end of the transmission shaft, and the material spreading structure is partially located in the material discharge cavity, and the material spreading structure is used to evenly spread the raw materials on the screen plate; the material spreading structure includes a reciprocating screw, which is fixedly connected to the transmission shaft, and a material spreading block is threadedly connected to the reciprocating screw, and the reciprocating screw is rotatably connected to the screening drum.

[0016] The above technical solution is adopted, in which the rotation of the transmission rod drives the reciprocating screw to rotate, so that the spreading block performs reciprocating linear motion on the reciprocating screw to evenly spread the raw materials on the screen plate.

[0017] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0018] 1. The utility model provides a chemical raw material screening device, which continuously presses the knocking plate at one end of the screen plate through a vibration structure, and the knocking plate drives the screen plate to press the first spring. The vibration structure periodically presses the knocking plate so that when the screen plate is not affected by the vibration structure, it will rebound through the elastic force of the contraction of the first spring, thereby playing a vibrating role on the screen plate, so that the raw materials can be screened on the screen plate. At the same time, the rotation of the motor drives the transmission shaft to rotate. The transmission shaft is provided with a dust suction component. The transmission of the transmission shaft drives the dust suction component to generate suction to draw the dust generated in the feeding chamber, so as to achieve dust removal while screening, which is convenient and quick.

[0019] 2. The utility model provides a chemical raw material screening device, which can block the raw materials on the screening plate through a limit plate to prevent the raw materials from falling from the slot during the screening process; and the limit plate and the screening plate are hinged by a torsion spring. When the screening plate needs to be cleaned, it is only necessary to slide and pull the screening plate in the direction of the motor, and the side wall of the feed chamber will block the limit plate, so that the limit plate compresses the torsion spring. While the limit plate compresses the torsion spring, the upper end of the limit plate also rotates in the horizontal direction of the screening plate until the limit plate and the screening plate are parallel. At this time, the limit plate can be pulled out of the slot together with the screening plate, and when it is reinstalled, it can be slid and inserted from the slot at one end of the principle motor in the same way; it is convenient to maintain and use.

[0020] 3. The utility model provides a chemical raw material screening device, which is provided with a reciprocating screw rod. The rotation of the transmission rod drives the reciprocating screw rod to rotate, so that the material spreading block performs reciprocating linear motion on the reciprocating screw rod, and the raw materials on the screening plate are spread evenly, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic structural diagram of the first section of the utility model;

[0024] Figure 3 It is a schematic structural diagram of the second cross section of the utility model as a whole;

[0025] Figure 4 This is a schematic diagram of the structure of the dust collection component of the utility model;

[0026] Figure 5 This is a structural schematic diagram of the material pushing structure of the utility model;

[0027] In the figure: 1. frame; 2. screening cylinder; 3. feeding chamber; 4. notch; 5. first spring; 6. screening plate; 7. knocking plate; 8. transmission shaft; 9. cam; 10. piston cylinder; 11. pressure plate; 12. second spring; 13. dust suction pipe; 14. exhaust pipe; 15. dust suction hood; 16. adsorption box; 17. reciprocating screw rod; 18. spreading block; 19. limit plate. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments:

[0029] Example 1

[0030] like Figure 1-5 As shown, the utility model provides a chemical raw material screening device, including a frame 1 and a motor; a screening drum 2 is fixedly provided on the upper end of the frame 1, and the bottom end of the screening drum 2 is connected to the bottom end of the frame 1 to form a feeding chamber 3; a feeding port is provided on one side of the screening drum 2; a slot 4 penetrating the next side is provided on one side of the screening drum 2, a first spring 5 is fixedly connected to the slot 4, a screening plate 6 is provided on the first spring 5, a screening hole is provided on the screening plate 6, a knocking plate 7 is fixedly connected to one end of the screening plate 6, a transmission shaft 8 is fixedly connected to the motor output shaft, a dust suction component is provided at one end of the transmission shaft 8, and the dust suction component is used to absorb dust in the feeding chamber 3; a vibration structure is also provided at one end of the transmission shaft 8, and the vibration structure is used to drive the screening plate 6 to vibrate.

[0031] In this embodiment, when screening raw materials, first input the raw materials from the feed port, then start the motor, and a vibration structure is provided on the transmission shaft 8, which continuously presses the knocking plate 7 at one end of the screening plate 6 through the vibration structure, and the knocking plate 7 drives the screening plate 6 to press the first spring 5. The vibration structure periodically presses the knocking plate 7 so that the screening plate 6 will rebound through the elastic force of the contraction of the first spring 5 when it is not affected by the vibration structure, thereby vibrating the screening plate 6, so that the raw materials can be screened on the screening plate. At the same time, the rotation of the motor drives the transmission shaft 8 to rotate, and the transmission shaft 8 is provided with a dust suction component, which drives the dust suction component to generate suction through the transmission of the transmission shaft 8 to draw the dust generated in the feeding chamber 3.

[0032] like Figure 1 As shown, in this embodiment, preferably, the vibration structure includes a cam 9, and the cam 9 is fixedly connected to the transmission shaft 8; the cam 9 overlaps the knocking plate 7.

[0033] The transmission shaft 8 drives the eccentric rotation, and the end of the cam 9 with a longer rotation radius presses the knocking plate 7. The knocking plate 7 descends, drives the screen plate 6 to descend and compresses the first spring 5.

[0034] like Figure 4As shown, preferably, the dust collection assembly includes a piston cylinder 10, a piston is provided in the piston cylinder 10, a piston rod is fixedly connected to the piston, a pressure plate 11 is fixedly provided at the bottom end of the piston rod, a second spring 12 is provided between the bottom end of the piston cylinder 10 and the pressure plate 11, and the second spring 12 is sleeved on the piston rod; a dust collection pipe 13 and an exhaust pipe 14 are fixedly connected to the upper end of the piston cylinder 10, a one-way valve is provided in the dust collection pipe 13 and the exhaust pipe 14, a dust collection hood 15 is fixedly connected to one end of the dust collection pipe 13, and the dust collection hood 15 is a funnel-shaped with a small top and a large bottom. An adsorption box 16 is provided at one end of the exhaust pipe 14, and the adsorption box 16 can adsorb dust discharged from the exhaust pipe 14.

[0035] Similar to the vibration structure, the end of the cam 9 with a longer rotation radius will squeeze the pressure plate 11, causing the pressure plate 11 to rise. The rise of the pressure plate 11 drives the piston to rise, compressing the second spring 12. When the second spring 12 rebounds, it drives the piston to return to its original position, reducing the internal air pressure of the piston, thereby generating a negative pressure at the dust hood 15, thereby adsorbing the dust in the feeding chamber 3. A one-way valve is provided in the dust suction pipe 13 and the exhaust pipe 14. The one-way valve in the dust suction pipe 13 only allows gas to flow into the piston cylinder 10, while the one-way valve in the exhaust pipe 14 only allows gas to flow out of the piston cylinder 10. After the dust is sucked into the exhaust pipe 14, the piston rises and drives the dust to be discharged into the adsorption box 16, and the dust is adsorbed and purified by the adsorption box 16.

[0036] Example 2

[0037] like Figure 3 As shown, based on Example 1, the utility model provides a technical solution: preferably, the screen plate 6 is slidably connected to the slot 4, a limit plate 19 is symmetrically provided on the screen plate 6, the limit plate 19 and the screen plate 6 are hinged, and the screen plate 6 is slidably connected to the inner wall of the feed cavity 3.

[0038] In this embodiment, the raw materials on the screening plate 6 can be blocked by the limit plate 19 to prevent the raw materials from falling from the slot 4 during the screening process; and the limit plate 19 and the screening plate 6 are hinged by a torsion spring. When the screening plate 6 needs to be cleaned, it is only necessary to slide and pull the screening plate 6 in the direction of the motor. The side wall of the feed chamber 3 will block the limit plate 19, so that the limit plate 19 compresses the torsion spring. While the limit plate 19 compresses the torsion spring, the upper end of the limit plate 19 also rotates in the horizontal direction of the screening plate 6 until the limit plate 19 is parallel to the screening plate 6. At this time, the limit plate 19 can be pulled out of the slot 4 together with the screening plate 6, and when it is reinstalled, it can be slid and inserted into the slot 4 at one end of the principle motor in the same way.

[0039] Example 3

[0040] like Figure 1-5As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, one end of the transmission shaft 8 is fixedly connected with a material spreading structure, the material spreading structure is partially located in the material discharge chamber 3, and the material spreading structure is used to evenly spread the raw materials on the screen plate 6; the material spreading structure includes a reciprocating screw 17, the reciprocating screw 17 is fixedly connected to the transmission shaft 8, a material spreading block 18 is threadedly connected to the reciprocating screw 17, and the reciprocating screw 17 is rotatably connected to the screening drum 2.

[0041] In this embodiment, the rotation of the transmission rod drives the reciprocating screw 17 to rotate, so that the spreading block 18 performs reciprocating linear motion on the reciprocating screw 17 to evenly spread the raw materials on the screening plate 6 .

[0042] The working principle of the chemical raw material screening device is described in detail below.

[0043] like Figure 1-5 As shown, when screening raw materials, first input the raw materials from the feed port, then start the motor, and a cam 9 is provided on the transmission shaft 8. The end of the cam 9 with a longer rotation radius will press the knocking plate 7. The knocking plate 7 descends to drive the screen plate 6 to descend and compress the first spring 5 to continuously press the knocking plate 7 at one end of the screen plate 6. The knocking plate 7 drives the screen plate 6 to press the first spring 5 periodically. When the knocking plate 7 is not acted upon, it will rebound through the elastic force of the contraction of the first spring 5, thereby vibrating the screen plate 6, so that the raw materials can be screened on the screen plate. At the same time, the rotation of the motor drives the transmission shaft 8 to rotate. The end of the cam 9 with a longer rotation radius will squeeze the pressure plate 11, causing the pressure plate 11 to rise. The rise of the pressure plate 11 drives the piston to rise, compressing the second spring 12. When the second spring 12 rebounds, it drives the piston to return, reducing the internal air pressure of the piston, thereby generating a negative pressure at the dust hood 15, thereby adsorbing the dust in the feeding chamber 3. A one-way valve is provided in the dust suction pipe 13 and the exhaust pipe 14. The one-way valve in the dust suction pipe 13 only allows gas to flow into the piston cylinder 10, while the one-way valve in the exhaust pipe 14 only allows gas to flow out of the piston cylinder 10. After the dust is sucked into the exhaust pipe 14, the piston rises and drives the dust to be discharged into the adsorption box 16, and the dust is adsorbed and purified by the adsorption box 16; the rotation of the transmission rod will drive the reciprocating screw 17 to rotate, so that the spreading block 18 performs a reciprocating linear motion on the reciprocating screw 17, and the raw materials on the screen plate 6 are evenly spread.

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A chemical raw material screening device, comprising a frame (1) and a motor; characterized in that: A screening drum (2) is fixedly provided at the upper end of the frame (1), and the bottom end of the screening drum (2) is connected to the bottom end of the frame (1) to form a material discharge chamber (3); a feed port is provided on one side of the screening drum (2); a slot (4) penetrating the next side is provided on one side of the screening drum (2), a first spring (5) is fixedly connected to the slot (4), a screening plate (6) is provided on the first spring (5), a screening hole is provided on the screening plate (6), a knocking plate (7) is fixedly connected to one end of the screening plate (6), a transmission shaft (8) is fixedly connected to the output shaft of the motor, a dust suction component is provided at one end of the transmission shaft (8), and the dust suction component is used to absorb dust in the material discharge chamber (3); a vibration structure is also provided at one end of the transmission shaft (8), and the vibration structure is used to drive the screening plate (6) to vibrate.

2. A chemical raw material screening device according to claim 1, characterized in that: The vibration structure comprises a cam (9), wherein the cam (9) is fixedly connected to the transmission shaft (8); and the cam (9) is overlapped with the knocking plate (7).

3. A chemical raw material screening device according to claim 2, characterized in that: The dust suction component comprises a piston cylinder (10), wherein a piston is arranged in the piston cylinder (10), wherein a piston rod is fixedly connected to the piston, wherein a pressure plate (11) is fixedly arranged at the bottom end of the piston rod, wherein a second spring (12) is arranged between the bottom end of the piston cylinder (10) and the pressure plate (11), wherein the second spring (12) is sleeved on the piston rod; wherein a dust suction pipe (13) and an exhaust pipe (14) are fixedly connected to the upper end of the piston cylinder (10), wherein a one-way valve is arranged in the dust suction pipe (13) and the exhaust pipe (14), wherein one end of the dust suction pipe (13) is fixedly connected to a dust suction hood (15), wherein one end of the exhaust pipe (14) is provided with an adsorption box (16), wherein the adsorption box (16) can adsorb dust discharged from the exhaust pipe (14).

4. A chemical raw material screening device according to claim 3, characterized in that: One end of the transmission shaft (8) is fixedly connected to a material spreading structure, and a portion of the material spreading structure is located in the material discharge cavity (3). The material spreading structure is used to evenly spread the raw materials on the screening plate (6).

5. A chemical raw material screening device according to claim 4, characterized in that: The material spreading structure comprises a reciprocating screw (17), the reciprocating screw (17) is fixedly connected to the transmission shaft (8), a material spreading block (18) is threadedly connected to the reciprocating screw (17), and the reciprocating screw (17) is rotatably connected to the screening drum (2).

6. A chemical raw material screening device according to claim 5, characterized in that: The dust collecting hood (15) is in the shape of a funnel with a small top and a large bottom.

7. A chemical raw material screening device according to claim 6, characterized in that: The sieve plate (6) is slidably connected to the notch (4); a limit plate (19) is symmetrically provided on the sieve plate (6); the limit plate (19) is hinged to the sieve plate (6); and the sieve plate (6) is slidably connected to the inner wall of the feed chamber (3).

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