Centrifugal device for pyromellitic dianhydride

Abstract

The utility model provides a centrifugal device for pyromellitic dianhydride, which comprises a fixed cylinder, a support component arranged at the lower part of the fixed cylinder, a motor arranged at the lower part of the support component, a transmission rod arranged at the upper part of the motor, a centrifugal cylinder arranged at the upper part of the transmission rod, limiting rings arranged at two ends of the centrifugal cylinder, and limiting grooves formed in the limiting rings, each limiting mechanism comprises a fixing plate which is arranged on the inner side wall of the fixing cylinder and corresponds to the position of the limiting groove, a supporting frame is arranged on the side face, facing the centrifugal cylinder, of the fixing plate, a connecting frame is arranged on one side of the supporting frame, a rotating rod is rotationally connected to the connecting frame, and a guide wheel is arranged on the rotating rod; limiting pieces are arranged at the two ends of the rotating rod correspondingly, the arranged limiting rings and limiting grooves are matched with multiple sets of limiting mechanisms, so that the centrifugal barrel can be limited in the centrifugal process, and the situation that the centrifugal barrel shakes when rotating at a high speed, and parts in the centrifugal barrel are damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pyromellitic dianhydride processing, and particularly relates to a centrifugal device for pyromellitic dianhydride. Background Art

[0002] During the production process of pyromellitic dianhydride (PMDA), a mixed solution containing solid impurities, unreacted raw materials, by-products and moisture is usually generated. Thus, by using the strong centrifugal force generated by high-speed rotation, these insoluble solid particles can be precipitated and separated from the liquid, which is beneficial to the subsequent crystallization process.

[0003] In the prior art, a centrifuge is generally used to precipitate and separate insoluble solid particles from the liquid during the processing of pyromellitic dianhydride, so as to obtain a relatively clear PMDA solution.

[0004] However, the drum support capacity of the centrifuge in the prior art is poor, and it is easy to shake when the drum rotates at high speed. In severe cases, the output shaft of the motor will be bent, thus reducing its service life. Therefore, the utility model provides a centrifugal device for pyromellitic dianhydride, so that the drum can be limited during the centrifugation process, and it can be prevented from shaking during high-speed rotation and damaging the internal components. Content of the Utility Model

[0005] In view of this, the utility model provides a centrifugal device for pyromellitic dianhydride, which can limit the centrifuge drum during the centrifugation process by means of the arranged limiting ring, limiting groove and multiple groups of limiting mechanisms, so as to prevent the centrifuge drum from shaking during high-speed rotation and damaging the internal components.

[0006] To solve the above technical problems, the utility model provides a centrifugal device for pyromellitic dianhydride, which comprises a fixed cylinder. A support assembly is arranged at the lower part of the inner side wall of the fixed cylinder. A motor is arranged at the lower part of the support assembly. A transmission rod is arranged at the upper part of the motor. One end of the transmission rod is connected to the output shaft of the motor through a coupling. A centrifugal cylinder is arranged at the upper part of the transmission rod. The centrifugal cylinder is fixedly connected to the upper part of the transmission rod. Limiting rings are arranged at both ends of the outer side wall of the centrifugal cylinder. The two limiting rings are welded to both ends of the outer side wall of the centrifugal cylinder. Limiting grooves are formed in the outer side walls of the two limiting rings. The limiting grooves can be integrally formed with the limiting rings by die casting during manufacturing. A plurality of groups of limiting mechanisms are arranged in each of the two limiting grooves. Each group of limiting mechanisms includes a fixing plate arranged on the inner side wall of the fixed cylinder at a position corresponding to the limiting groove. The fixing plate is connected to the inner side wall of the fixed cylinder by bolts. A support frame is arranged on the vertical surface of the fixing plate facing the centrifugal cylinder. The support frame is connected to the vertical surface of one side of the fixing plate by bolts. A connecting frame is arranged on one side of the support frame. The connecting frame is welded to one side of the support frame. A rotating rod is rotatably connected to the connecting frame. The rotating rod is rotatably connected to the connecting frame by sleeving bearings at both ends. A guiding wheel is arranged on the outer side part of the rotating rod. The guiding wheel is fixedly connected to the outer side wall of the rotating rod. The guiding wheel is in close fit with the inner side wall of the limiting groove. Limiting pieces are arranged at both ends of the rotating rod. The limiting pieces are fixedly connected to both ends of the rotating rod. A fixing assembly is arranged at the lower part of the motor. A top cover is arranged at the upper part of the fixed cylinder. The top cover is connected to the upper part of the fixed cylinder by bolts. A feeding assembly is arranged on one side of the top cover.

[0007] The support assembly includes a filtering ring arranged at the lower part of the inner side wall of the fixed cylinder. The filtering ring is connected to the inner side wall of the fixed cylinder by bolts. A guiding boss is arranged on the inner side wall of the filtering ring. The guiding boss is welded to the inner side wall of the filtering ring. The transmission rod is rotatably connected to the center of the guiding boss.

[0008] The fixing assembly includes a mounting plate arranged at the lower part of the motor. The motor is connected to the upper part of the mounting plate by bolts. Connecting plates are arranged on the vertical surfaces of the four sides of the mounting plate. The connecting plates are welded to the vertical surfaces of the four sides of the mounting plate. Support plates are arranged at one end of each of the four connecting plates. The support plates are welded to one end of the connecting plates. The upper part of each support plate is connected to the lower part of the guiding boss. The support plates are connected to the lower part of the guiding boss by bolts.

[0009] The feeding assembly includes a feeding port formed in the upper part of the top cover. The feeding port can be integrally formed with the top cover by die casting during manufacturing. A cover plate is arranged on one side of the feeding port. One end of the cover plate is connected to one side of the feeding port through a hinge. A handle is arranged on the upper part of the cover plate. The handle is welded to the upper part of the cover plate. A limiting arc plate is arranged on one side of the upper part of the cover plate. The limiting arc plate is welded to one side of the upper part of the cover plate.

[0010] A fixing frame is arranged on the outer side wall of the fixed cylinder. The fixing frame is connected to the outer side wall of the fixed cylinder by bolts. Support legs are arranged at the four corners of the lower part of the fixing frame. The support legs are welded to the lower part of the fixing frame.

[0011] A collection bucket is provided below the fixed cylinder. The collection bucket is placed above the ground and corresponds to the position below the fixed cylinder.

[0012] The beneficial effects of the above technical solutions of the present utility model are as follows:

[0013] 1. By setting the limit ring and the limit groove in cooperation with multiple limit mechanisms, the centrifuge cylinder can be limited during the centrifugation process, avoiding the shaking of the centrifuge cylinder during high-speed rotation and damaging the internal components.

[0014] 2. By setting the support assembly, the transmission rod can be supported and limited, and the centrifuged PMDA solution can be further filtered through the filter ring to enhance its purity after crystallization.

[0015] 3. By setting the fixing assembly, the motor can be supported, thereby preventing the output shaft of the motor from rotating and self-rotating.

[0016] 4. By setting the feeding assembly, the feeding port can be blocked to prevent the material from splashing due to the high-speed rotation of the centrifuge cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic top view structure diagram of the fixed cylinder and the components thereon of the present utility model;

[0019] Figure 3 is a schematic diagram of the partial component structure of the present utility model;

[0020] Figure 4 is a schematic diagram of the limit mechanism structure of the present utility model;

[0021] Figure 5 is a schematic top view structure diagram of the support assembly of the present utility model;

[0022] Figure 6 is a schematic bottom view structure diagram of the support assembly of the present utility model.

[0023] In the figure: 101, fixed cylinder; 102, motor; 103, transmission rod; 104, centrifuge cylinder; 105, limit ring; 106, fixing plate; 107, support frame; 108, connecting frame; 109, limit piece; 110, guide wheel; 111, limit groove;

[0024] 201, filter ring; 202, guide boss;

[0025] 301, top cover; 302, cover plate; 303, limit arc plate; 304, handle;

[0026] 401, Support plate; 402, Connecting plate; 403, Mounting plate;

[0027] 501, Fixed frame; 502, Support leg. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will combine the accompanying drawings of the embodiments of the present utility model Figure 1-6 to clearly and completely describe the technical solutions of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present utility model.

[0029] As Figure 1 , 2 , shown in FIGS. 4: A centrifugal device for pyromellitic dianhydride, including a fixed cylinder 101. The fixed cylinder 101 is provided so that each component thereon can be supported. A support assembly is provided on the lower part of the inner side wall of the fixed cylinder 101. The support assembly is provided to support and fix the drive rod 103 and each component thereon, and can further achieve screening. A motor 102 is provided below the support assembly. The motor 102 is provided to drive the drive rod 103, and then drive each component thereon to rotate accordingly. A drive rod 103 is provided above the motor 102. One end of the drive rod 103 is connected to the output shaft of the motor 102 through a coupling, so that the output shaft of the motor 102 rotates to drive the drive rod 103 to rotate accordingly, and then the drive rod 103 drives the centrifugal cylinder 104 to rotate accordingly. Therefore, the clarified PMDA solution can be thrown out. A centrifugal cylinder 104 is provided above the drive rod 103. The centrifugal cylinder 104 is provided and rotated so that the clarified PMDA solution is thrown out, and the insoluble solid particles will remain in the centrifugal cylinder 104 and be separated. The centrifugal cylinder 104 is fixedly connected to the upper part of the drive rod 103, so that the centrifugal cylinder 104 can be supported and can rotate with the rotation of the drive rod 103.

[0030] As Figure 2 , 3As shown in the figure: Limit rings 105 are provided at both ends of the outer side wall of the centrifugal cylinder 104. The limit rings 105 are provided to support both ends of the centrifugal cylinder 104 through the limit grooves 111 opened thereon in cooperation with multiple groups of limit mechanisms. The two limit rings 105 are welded to both ends of the outer side wall of the centrifugal cylinder 104, so that its support structure is more stable. Limit grooves 111 are opened on the outer side walls of the two limit rings 105. The limit grooves 111 are provided to support both ends of the centrifugal cylinder 104 in cooperation with multiple groups of limit mechanisms, avoiding the centrifugal cylinder 104 from shaking during high-speed rotation and causing damage to the internal components. The limit grooves 111 and the limit rings 105 can be integrally formed by die casting during production, so that their connection structure is more stable. Multiple groups of limit mechanisms are provided in both limit grooves 111. The multiple groups of limit mechanisms are provided to support both ends of the centrifugal cylinder 104, and thus can support the centrifugal cylinder 104 without affecting its rotation.

[0031] As Figure 2 , 3 , as shown in FIGS. 4: Each group of limit mechanisms includes a fixing plate 106 provided on the inner side wall of the fixed cylinder 101 at a position corresponding to the limit groove 111. The fixing plate 106 is provided so that the components thereon can be supported. The fixing plate 106 is connected to the inner side wall of the fixed cylinder 101 by bolts, so that the fixing plate 106 is convenient for disassembly and assembly. A support frame 107 is provided on the vertical surface of the fixing plate 106 facing the centrifugal cylinder 104. The support frame 107 is provided to support the connecting frame 108, and can shorten the length of the connecting frame 108 to improve the stability of the guide wheel 110 during rotation. The support frame 107 is connected to the vertical surface of one side of the fixing plate 106 by bolts, so that the support frame 107 is convenient for disassembly and assembly. A connecting frame 108 is provided on one side of the support frame 107. The connecting frame 108 is provided so that the rotating rod and the guide wheel 110 can be supported. The connecting frame 108 is welded to one side of the support frame 107, so that the support structure of the connecting frame 108 is more stable. A rotating rod is rotatably connected to the connecting frame 108. The rotating rod is provided so that the guide wheel 110 can be supported and the guide wheel 110 can rotate. The rotating rod is rotatably connected to the connecting frame 108 by sleeving bearings at both ends, so that the rotating rod does not get stuck during rotation.

[0032] As Figure 1 , 2, as shown in Figures 4: A guide wheel 110 is provided on the outer side of the rotating rod. The guide wheel 110 is provided so that the guide wheel 110 can cooperate with the limit groove 111 to limit and guide the centrifugal cylinder 104, thereby avoiding the centrifugal cylinder 104 from shaking during high-speed rotation and damaging the internal components. The guide wheel 110 is fixedly connected to the outer side wall of the rotating rod, so that the guide wheel 110 can drive the rotating rod to rotate when it rotates, thereby avoiding excessive friction and causing the guide wheel 110 to heat up. The guide wheel 110 is in close contact with the inner side wall of the limit groove 111, thereby improving the limiting effect of the guide wheel 110. Limit pieces 109 are provided at both ends of the rotating rod. The limit pieces 109 are provided to prevent the rotating rod from shaking during rotation. The limit pieces 109 are fixedly connected to both ends of the rotating rod, making its connection structure more stable. A fixing component is provided below the motor 102. The fixing component is provided to support the motor 102, thereby preventing the output shaft of the motor 102 from rotating and self-rotating. A top cover 301 is provided on the upper part of the fixed cylinder 101. The top cover 301 is provided so that the feeding component can be supported, and the top cover 301 and the feeding component can block the material, preventing the material from splashing due to the high-speed rotation of the centrifugal cylinder 104. The top cover 301 is connected to the upper part of the fixed cylinder 101 by bolts, making it easy to disassemble and assemble. A feeding component is provided on one side of the top cover 301. The feeding component is provided to block the feeding port and prevent the material from splashing due to the high-speed rotation of the centrifugal cylinder 104.

[0033] As Figure 2 , 5 shown: The support component includes a filter ring 201 provided at the lower part of the inner side wall of the fixed cylinder 101. The filter ring 201 is provided so that the centrifuged PMDA solution can be filtered again, making the discharged PMDA solution clearer and improving the purity of subsequent crystallization. The filter ring 201 is connected to the lower part of the inner side wall of the fixed cylinder 101 by bolts, making it easy to disassemble and assemble the filter ring 201 when it needs to be cleaned. A guide boss 202 is provided on the inner side wall of the filter ring 201. The guide boss 202 is provided so that the PMDA solution thrown out by the centrifugal cylinder 104 can be guided to flow to the filter ring 201 for filtration and discharge. The guide boss 202 is welded to the inner side wall of the filter ring 201, making its connection structure more stable. The transmission rod 103 is rotatably connected to the axis of the guide boss 202, so that the transmission rod 103 can be further limited, improving the stability of the centrifugal cylinder 104 during rotation.

[0034] As Figure 5 , 6As shown: the fixing assembly includes a mounting plate 403 arranged at the lower part of the motor 102, the mounting plate 403 is arranged so that the motor 102 can be supported to prevent the output shaft of the motor 102 from rotating and rotating. The motor 102 is connected to the upper part of the mounting plate 403 by bolts, so that the motor 102 is easy to disassemble and assemble. The four vertical surfaces of the mounting plate 403 are provided with connecting plates 402. The connecting plates 402 are arranged so that the support plate 401 is connected to the mounting plate 403, and then the mounting plate 403 can be supported. The connecting plates 402 are welded to the four vertical surfaces of the mounting plate 403, so that they are connected The structure is more stable. A support plate 401 is provided at one end of each of the four connecting plates 402. The support plate 401 is provided so that the connecting plate 402 and the mounting plate 403 can be supported and fixed, thereby improving the supporting effect of the mounting plate 403. The support plate 401 is welded to one end of the connecting plate 402, so that the connection structure is more stable. The upper part of each support plate 401 is connected to the lower part of the guide boss 202, so that the support plate 401 can be supported. The support plate 401 is connected to the lower part of the guide boss 202 by bolts, so that the support plate 401 and the components thereon can be easily disassembled and assembled.

[0035] like Figure 1 As shown: the feeding assembly includes a feed port opened on the upper part of the top cover 301, the feed port is provided so that materials can be added from the feed port, the feed port can be integrally formed with the top cover 301 by mold casting during production, so that the connection structure thereof is more stable, a cover plate 302 is provided on one side of the feed port, one end of the cover plate 302 is connected to one side of the feed port by a hinge, the cover plate 302 is provided so that it can be opened and closed, and then it can be opened when materials need to be added, and it can be closed when the materials are centrifuged to prevent the materials from splashing out during centrifugation, a handle 304 is provided on the upper part of the cover plate 302, the handle 304 is provided so as to facilitate the opening and closing of the cover plate 302, the handle 304 is welded to the upper part of the cover plate 302, so that the connection structure thereof is more stable, a limiting arc plate 303 is provided on one side of the upper part of the cover plate 302, a limiting slide plate is provided so as to limit the cover plate 302, and the limiting arc plate 303 is welded to one side of the upper part of the cover plate 302, so that the connection structure thereof is more stable.

[0036] like Figure 1As shown in the figure: A fixed frame 501 is provided on the outer side wall of the fixed cylinder 101. The fixed frame 501 is provided to enable the support legs 502 to be supported. The fixed frame 501 is connected to the outer side wall of the fixed cylinder 101 by bolts, so that the fixed frame 501 is convenient for disassembly and assembly. Support legs 502 are provided at the four corners of the lower part of the fixed frame 501. The support legs 502 are provided to enable the components thereon to be stably supported. The support legs 502 are welded to the lower part of the fixed frame 501, so that its connection structure is more stable. A collection bucket is provided below the fixed cylinder 101. The collection bucket is provided to enable the centrifuged PMDA solution to be collected. The collection bucket is placed above the ground and corresponds to the position below the fixed cylinder 101, so that it is more stable during collection.

[0037] The usage method of the present utility model:

[0038] When centrifuging the mixed solution of pyromellitic dianhydride is required, place the collection bucket above the ground and below the fixed cylinder 101. Lift the cover plate 302 and add the mixed solution into the centrifuge cylinder 104. After closing the cover plate 302, start the motor 102 to make the centrifuge cylinder 104 rotate at a high speed, so that the PMDA solution can be thrown out, and then flow out after being filtered again by the filter ring 201, so that the PMDA solution falls into the collection bucket for collection.

[0039] When the centrifuge cylinder 104 rotates, the guide wheels 110 on the multiple limiting mechanisms will rotate due to friction, causing the rotating rod to rotate, and then the centrifuge cylinder 104 can be guided without affecting the normal use of the centrifuge cylinder 104.

[0040] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The above is the preferred implementation mode of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle described in the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A centrifugal device for pyromellitic dianhydride, characterized in that: It includes a fixed cylinder (101). A support assembly is provided at the lower part of the inner side wall of the fixed cylinder (101). A motor (102) is provided at the lower part of the support assembly. A transmission rod (103) is provided at the upper part of the motor (102). A centrifugal cylinder (104) is provided at the upper part of the transmission rod (103). Limiting rings (105) are provided at both ends of the outer side wall of the centrifugal cylinder (104). Limiting grooves (111) are opened on the outer side walls of the two limiting rings (105). A plurality of groups of limiting mechanisms are provided in each of the two limiting grooves (111). Each group of the limiting mechanisms includes a fixing plate (106) provided on the inner side wall of the fixed cylinder (101) at a position corresponding to the limiting groove (111). A support frame (107) is provided on the vertical surface of the fixing plate (106) facing the centrifugal cylinder (104). A connecting frame (108) is provided on one side of the support frame (107). A rotating rod is rotatably connected to the connecting frame (108). A guide wheel (110) is provided on the outer side part of the rotating rod. The guide wheel (110) is in close fit with the inner side wall of the limiting groove (111). Limiting pieces (109) are provided at both ends of the rotating rod. A fixing component is provided at the lower part of the motor (102). A top cover (301) is provided at the upper part of the fixed cylinder (101). A feeding component is provided on one side of the top cover (301).

2. The centrifugal device for pyromellitic dianhydride according to claim 1, characterized in that: The support assembly includes a filter ring (201) provided at the lower part of the inner side wall of the fixed cylinder (101). A guiding boss (202) is provided on the inner side wall of the filter ring (201). The transmission rod (103) is rotatably connected to the axis of the guiding boss (202).

3. The centrifugal device for pyromellitic dianhydride according to claim 2, characterized in that: The fixing component includes a mounting plate (403) provided at the lower part of the motor (102). Connecting plates (402) are provided on the vertical surfaces of the four sides of the mounting plate (403). Support plates (401) are provided at one ends of the four connecting plates (402). The upper part of each support plate (401) is connected to the lower part of the guiding boss (202).

4. The centrifugal device for pyromellitic dianhydride according to claim 1, wherein: The feeding component includes a feeding port opened on the upper part of the top cover (301). A cover plate (302) is provided on one side of the feeding port. A handle (304) is provided on the upper part of the cover plate (302). A limiting arc plate (303) is provided on one side of the upper part of the cover plate (302).

5. The centrifugal device for pyromellitic dianhydride according to claim 1, characterized in that: A fixed frame (501) is provided on the outer side wall of the fixed cylinder (101). Support legs (502) are provided at the four corners of the lower part of the fixed frame (501).

6. The centrifugal device for pyromellitic dianhydride according to claim 1, wherein: A collection bucket is provided below the fixed cylinder (101).

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