A device for removing impurities from raw material of pyromellitic dianhydride

Abstract

The utility model provides a kind of pre-processing of raw material of pyromellitic dianhydride removes impurity device, including impurity removal box, the side wall of impurity removal box is equipped with first sliding slot, the number of first sliding slot is four, the inside of impurity removal box is provided with vibration frame, the number of vibration frame is two, the inner wall of vibration frame is bolted connection and has screening frame, the aperture of screening frame of upside is greater than the aperture of screening frame of downside, the side wall of screening frame is fixedly connected with first handle, the front and rear side wall of vibration frame is rotatably installed with gyro wheel, the number of gyro wheel is two, gyro wheel is located inside first sliding slot, the side wall of impurity removal box is fixedly connected with connecting plate.The utility model structure is reasonable, double vibration frame is equipped with grading screening frame, and it is completed in one step to be screened-coarse screen, improve work efficiency;Motor, carousel and rotating plate group reverse synchronous vibration mechanism, prevent raw material accumulation and block hole, eliminate dead angle, ensure that raw material is fully contacted screen, improve raw material purity.

Description

Technical Field

[0001] This utility model belongs to the field of raw material pretreatment technology, and more specifically, it relates to a pretreatment and impurity removal device for pyromellitic dianhydride raw materials. Background Technology

[0002] In the pretreatment and impurity removal of pyromellitic dianhydride (PMDA) raw materials, mechanical impurity removal is a key step, mainly targeting solid impurities in the raw materials. Vibrating sieving is commonly used to separate impurities of different particle sizes through screens with different apertures.

[0003] Existing impurity removal devices often suffer from incomplete impurity separation due to single-stage screening, requiring repeated screening operations. The vibration mechanism is mostly a single-frame vibration, which easily leads to the accumulation of raw materials on the screen and screening dead corners. Summary of the Invention

[0004] The purpose of this invention is to provide a pretreatment and impurity removal device for pyromellitic dianhydride raw materials, which features a double vibrating frame with a grading and screening frame, completing the "coarse screening-fine screening" in one step, thus improving work efficiency; the motor, turntable and rotating plate assembly have a reverse synchronous vibration mechanism to prevent raw material accumulation and blockage, eliminate dead corners, ensure that the raw material fully contacts the screen, and improve the purity of the raw material.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A pretreatment and impurity removal device for pyromellitic dianhydride raw materials is provided, comprising an impurity removal chamber. Four first sliding grooves are provided on the side wall of the impurity removal chamber. Two vibrating frames are installed inside the impurity removal chamber. A screening frame is bolted to the inner wall of each vibrating frame. The aperture of the upper screening frame is larger than that of the lower screening frame. A first handle is fixedly connected to the side wall of each screening frame. Two rollers are rotatably mounted on both the front and rear side walls of the vibrating frame. The rollers are located inside the first sliding grooves. A connecting plate is fixedly connected to the wall, a motor is fixedly connected to the upper surface of the connecting plate, a turntable is fixedly connected to the output end of the motor, a first sliding pin is fixedly connected to the upper surface of the turntable, a movable plate is fixedly connected to the side wall of the upper vibrating frame, a second sliding groove is formed on the upper surface of the movable plate, the first sliding pin is located inside the second sliding groove, a second sliding pin is fixedly connected to the side wall of the vibrating frame, a movable pin is fixedly connected to the side wall of the impurity removal box, a rotating plate is rotatably mounted on the outer surface of the movable pin, a third sliding groove is formed on the side wall of the rotating plate, there are two third sliding grooves, and the second sliding pin is located inside the third sliding groove.

[0006] Optionally, the inner wall of the impurity removal box is fixedly connected with a gathering plate, and there are two gathering plates, which are located between adjacent vibration frames.

[0007] Optionally, a collection box is provided at the bottom of the impurity removal box, and the collection box is located below the vibration frame on the lower side.

[0008] Optionally, a feeding trough is provided on the upper surface of the impurity removal box, and a funnel frame is fixedly connected to the upper surface of the impurity removal box, the funnel frame being connected to the feeding trough.

[0009] Optionally, a door is rotatably mounted on the side wall of the cleaning box, and a second handle is fixedly connected to the side wall of the door.

[0010] Optionally, the side wall of the cleaning box is provided with a mounting groove, and a magnetic strip is fixedly connected to the inner wall of the mounting groove. The cleaning box and the door are magnetically connected by the magnetic strip.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention comprises a funnel frame, a screening frame, a motor, a turntable, a first sliding pin, a second sliding groove, a moving plate, a vibrating frame, a second sliding pin, a third sliding groove, a rotating plate, a gathering plate, and a collecting box. When PMDA raw materials need to be screened, the raw materials are added through the funnel frame and fall into the upper screening frame. Simultaneously, the motor operates, driving the turntable to rotate, which in turn drives the first sliding pin to rotate around the turntable. Since the first sliding pin is located in the second sliding groove, it drives the moving plate to reciprocate left and right, thereby driving the vibrating frame to reciprocate left and right. Since the second sliding pin is located in the third sliding groove, when the upper vibrating frame moves to the left, it drives the upper first sliding pin to reciprocate left and right. The two sliding pins move to the left, which in turn drives the lower second sliding pin to the right via the rotating plate. This, in turn, drives the lower vibrating frame to the right, causing the upper and lower vibrating frames to move in opposite directions. Consequently, the upper and lower screening frames also move in opposite directions. The upper vibrating frame performs preliminary filtration of impurities and abnormal materials whose volume / particle size is significantly larger than the target PMDA material. The qualified material is guided by the gathering plate and falls into the lower vibrating frame for secondary filtration, further filtering impurities and materials whose particle size is smaller than the upper screening frame but larger than the target PMDA particle size. Finally, the qualified material falls into the collection box. This utility model features a double vibrating frame with a grading screening frame, completing the "coarse screening-fine screening" in one step, improving work efficiency. The reverse synchronous vibration mechanism of the motor, turntable, and rotating plate group prevents material accumulation and blockage, eliminates dead corners, ensures full contact between the material and the screen, and improves the purity of the material. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0014] In the diagram: 1. Impurity removal box; 2. First sliding groove; 3. Vibrating frame; 4. Screening frame; 5. Roller; 6. Connecting plate; 7. Motor; 8. Turntable; 9. First sliding pin; 10. Moving plate; 11. Second sliding groove; 12. Second sliding pin; 13. Movable pin; 14. Rotating plate; 15. Third sliding groove; 16. Gathering plate; 17. Collection box; 18. Feed chute; 19. Funnel frame; 20. First handle; 21. Door; 22. Second handle; 23. Mounting groove; 24. Magnetic strip. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0017] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Reference Figure 1-5This invention provides a pretreatment and impurity removal device for pyromellitic dianhydride raw materials. The device includes a removal chamber 1, four first sliding grooves 2 on the side wall of the removal chamber 1, two vibrating frames 3 inside the removal chamber 1, and a screening frame 4 bolted to the inner wall of the vibrating frame 3. The upper screening frame 4 has a larger aperture than the lower screening frame 4. A first handle 20 is fixedly connected to the side wall of the screening frame 4. Rollers 5 are rotatably mounted on both the front and rear side walls of the vibrating frame 3. The rollers 5 reduce friction with the first sliding grooves 2, increasing the service life of the equipment. Two rollers 5 are located inside the first sliding grooves 2. A connecting plate 6 is fixedly connected to the side wall of the removal chamber 1. A motor 7 is fixedly connected to the upper surface of the vibrating frame 3. A turntable 8 is fixedly connected to the output end of the motor 7. A first sliding pin 9 is fixedly connected to the upper surface of the turntable 8. A moving plate 10 is fixedly connected to the side wall of the upper vibrating frame 3. A second sliding groove 11 is formed on the upper surface of the moving plate 10. The first sliding pin 9 is located inside the second sliding groove 11. A second sliding pin 12 is fixedly connected to the side wall of the vibrating frame 3. A movable pin 13 is fixedly connected to the side wall of the impurity removal box 1. A rotating plate 14 is rotatably mounted on the outer surface of the movable pin 13. A third sliding groove 15 is formed on the side wall of the rotating plate 14. There are two third sliding grooves 15. The second sliding pin 12 is located inside the third sliding groove 15. When PMDA raw materials need to be screened, the raw materials are... The raw material is added through the funnel frame 19 and falls into the upper screening frame 4. Simultaneously, the motor 7 operates, driving the turntable 8 to rotate, which in turn causes the first sliding pin 9 to rotate around the turntable 8. Since the first sliding pin 9 is located in the second sliding groove 11, it drives the moving plate 10 to reciprocate left and right, thereby causing the vibrating frame 3 to reciprocate left and right. Since the second sliding pin 12 is located in the third sliding groove 15, when the upper vibrating frame 3 moves to the left, it drives the upper second sliding pin 12 to move to the left, which in turn drives the lower second sliding pin 12 to move to the right via the rotating plate 14, thus driving the lower vibrating frame 3 to move to the right. This results in the upper and lower vibrating frames 3 moving in opposite directions, thereby... The upper and lower screening frames 4 move in opposite directions. The upper vibrating frame 3 performs preliminary filtration of impurities and abnormal raw materials whose volume / particle size is significantly larger than the target PMDA raw material. The raw materials that meet the requirements fall into the lower vibrating frame 3 after being guided by the gathering plate 16 for secondary filtration. This further filters impurities and raw materials whose particle size is smaller than that of the upper screening frame 4 but larger than the target PMDA particle size. Finally, the raw materials that meet the requirements fall into the collection box 17. The inner wall of the impurity removal box 1 is fixedly connected with two gathering plates 16, which are located between adjacent vibrating frames 3. The gathering plates 16 are used to guide the raw materials screened by the upper screening frame 4 so that they fall into the lower screening frame 4.

[0020] Please refer to another embodiment of this utility model as well. Figures 1 to 5 The bottom of the impurity removal box 1 is provided with a collection box 17, which is located below the vibration frame 3 on the lower side. The collection box 17 is used to collect PMDA raw materials that meet the process requirements. The upper surface of the impurity removal box 1 is provided with a feeding trough 18, and a funnel frame 19 is fixedly connected to the upper surface of the impurity removal box 1. The funnel frame 19 is connected to the feeding trough 18. The PMDA raw materials that need to be screened are put into the screening frame 4 on the upper side through the funnel frame 19 and the feeding trough 18.

[0021] In another embodiment of this utility model, please refer to Figures 1 to 5 The side wall of the impurity removal box 1 is rotatably mounted with a door 21. A second handle 22 is fixedly connected to the side wall of the door 21. Pulling the second handle 22 can open the door 21, making it easy to remove the two screening frames 4 and the collection box 17 and transfer the raw materials inside. The side wall of the impurity removal box 1 is provided with an installation groove 23. A magnetic strip 24 is fixedly connected to the inner wall of the installation groove 23. The impurity removal box 1 and the door 21 are magnetically connected by the magnetic strip 24. The magnetic connection makes it easier to open the door 21.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment and impurity removal device for pyromellitic dianhydride raw materials, comprising an impurity removal chamber (1), characterized in that: The side wall of the impurity removal box (1) is provided with a first sliding groove (2), and there are four first sliding grooves (2). The inside of the impurity removal box (1) is provided with a vibrating frame (3), and there are two vibrating frames (3). The inner wall of the vibrating frame (3) is bolted to a screening frame (4). The aperture of the upper screening frame (4) is larger than that of the lower screening frame (4). The side wall of the screening frame (4) is fixedly connected with a first handle (20). Rollers (5) are rotatably installed on the front and rear side walls of the vibrating frame (3). There are two rollers (5). The rollers (5) are located inside the first sliding groove (2). The side wall of the impurity removal box (1) is fixedly connected with a connecting plate (6). The upper surface of the connecting plate (6) is fixedly connected with a motor (7). (7) The output end is fixedly connected to a turntable (8), the upper surface of the turntable (8) is fixedly connected to a first sliding pin (9), the side wall of the upper vibration frame (3) is fixedly connected to a moving plate (10), the upper surface of the moving plate (10) is provided with a second sliding groove (11), the first sliding pin (9) is located inside the second sliding groove (11), the side wall of the vibration frame (3) is fixedly connected to a second sliding pin (12), the side wall of the impurity removal box (1) is fixedly connected to a movable pin (13), the outer surface of the movable pin (13) is rotatably mounted with a rotating plate (14), the side wall of the rotating plate (14) is provided with a third sliding groove (15), the number of the third sliding groove (15) is two, and the second sliding pin (12) is located inside the third sliding groove (15).

2. The pyromellitic dianhydride pretreatment and impurity removal device according to claim 1, characterized in that: The inner wall of the impurity removal box (1) is fixedly connected with a gathering plate (16), and there are two gathering plates (16), which are located between adjacent vibration frames (3).

3. The pyromellitic dianhydride pretreatment and impurity removal device according to claim 1, characterized in that: The bottom of the impurity removal box (1) is provided with a collection box (17), which is located below the vibration frame (3) on the lower side.

4. The pyromellitic dianhydride pretreatment and impurity removal device according to claim 1, characterized in that: The upper surface of the impurity removal box (1) is provided with a feeding trough (18), and a funnel frame (19) is fixedly connected to the upper surface of the impurity removal box (1). The funnel frame (19) is connected to the feeding trough (18).

5. The pyromellitic dianhydride pretreatment and impurity removal device according to claim 1, characterized in that: The side wall of the cleaning box (1) is rotatably mounted with a door (21), and the side wall of the door (21) is fixedly connected with a second handle (22).

6. The pyromellitic dianhydride pretreatment and impurity removal device according to claim 5, characterized in that: The side wall of the cleaning box (1) is provided with an installation groove (23), and the inner wall of the installation groove (23) is fixedly connected with a magnetic strip (24). The cleaning box (1) and the door (21) are magnetically connected by the magnetic strip (24).

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