Solid-liquid separation device for producing 5-nitrobenzimidazolone

Abstract

The utility model relates to a solid-liquid separation device for producing 5-nitrobenzimidazolone, which comprises a feed pipe, a bracket mounted on the feed pipe, a separation outer barrel arranged below the feed pipe, a liquid discharge pipe arranged at the bottom of the separation outer barrel, a turntable rotationally mounted at the bottom of the separation outer barrel, a support column fixed at the top of the turntable, and a liquid discharge pipe arranged at the bottom of the separation outer barrel, a supporting top ring is fixed to the top of the supporting column, a separating inner barrel is arranged in the supporting top ring, a plurality of filtering holes are evenly formed in the outer wall of the separating inner barrel, a filtering membrane is fixed to the inner wall of the separating inner barrel, a supporting flange supported on the supporting top ring is arranged on the outer side of the top of the separating inner barrel, and the feeding pipe is connected with a lifting mechanism driving the feeding pipe to ascend and descend. According to the solid-liquid separation device, the separation inner barrel capable of being taken out is arranged on the rotating disc in the separation outer barrel, solid-liquid separation can be carried out in a centrifugal mode, the separation effect is better, materials can be continuously fed into the liquid inlet pipe during centrifugal separation, a filter membrane does not need to be cleaned, and the separation speed is high.

Description

Technical Field

[0001] The utility model relates to a solid-liquid separation device for the production of 5-nitrobenzimidazolone, belonging to the technical field of solid-liquid separation equipment. Background Art

[0002] 5-Aminobenzimidazolone, a pale yellow or white crystal, is an important intermediate widely used in pharmaceuticals, pesticides, pigments, and specialty materials synthesis. During the production of 5-nitrobenzimidazolone, the crystallized material undergoes solid-liquid separation, followed by pressing. The filter cake is then air-blown to yield the final product. Current solid-liquid separation methods involve placing the material into a filter. However, this requires frequent cleaning of the filter membrane, which can easily clog and affect solid-liquid separation. This also results in slower separation speeds and poorer results. Utility Model Content

[0003] The utility model provides a solid-liquid separation device for the production of 5-nitrobenzimidazolone, which solves the problem that the filter membrane needs to be cleaned frequently during separation, otherwise it is easy to be blocked, affecting the solid-liquid separation, and the separation speed is relatively slow and the separation effect is relatively poor.

[0004] The utility model relates to a solid-liquid separation device for the production of 5-nitrobenzimidazolone. The device comprises a feed pipe, a bracket is installed on the feed pipe, a separation outer barrel is provided below the feed pipe, a liquid discharge pipe is provided at the bottom of the separation outer barrel, a turntable is rotatably installed at the bottom of the separation outer barrel, a support column is fixed on the top of the turntable, a support top ring is fixed on the top of the support column, a separation inner barrel is provided inside the support top ring, a plurality of filter holes are evenly provided on the outer wall of the separation inner barrel, a filter membrane is fixed on the inner wall of the separation inner barrel, a support flange supported on the support top ring is provided on the outer side of the top of the separation inner barrel, and the feed pipe is connected to a lifting mechanism for driving the separation inner barrel to rise and fall.

[0005] As a preferred embodiment, a limiting hole is provided on the top of the supporting top ring, and a limiting pin is fixed on the bottom of the supporting flange to cooperate with the limiting hole to prevent relative rotation with the separation inner barrel when the turntable rotates, and the outer wall of the limiting pin and the limiting hole are interference fit.

[0006] As a preferred embodiment, a supporting middle ring is fixed on the inner side of the middle part of the supporting column, and the inner hole of the supporting middle ring is in contact with the outer wall of the separation inner barrel, which is more stable.

[0007] As a preferred embodiment, the lifting mechanism includes a lifting cylinder fixed on the bracket, a bellows is provided on the feed pipe, and a guide sleeve is provided on the feed pipe below the bellows. The guide sleeve is fixed on the bracket, which can lower the height of the bottom of the feed pipe to prevent leakage during material feeding and will not hinder the removal and placement of the separation inner barrel.

[0008] As a preferred embodiment, a liquid blocking cover is fixed on the lower outer wall of the feed pipe, and the bottom of the lifting cylinder is fixed to the liquid blocking cover to better prevent the liquid from splashing out.

[0009] As a preferred embodiment, a rotating shaft is fixed in the middle of the bottom of the turntable, the rotating shaft is rotatably mounted on the separation outer barrel, and a rotating motor is fixed at the bottom of the rotating shaft, which is fixed to the bottom of the separation outer barrel.

[0010] As a preferred embodiment, a mounting bracket is provided on the left side of the separated outer barrel, a horizontal slide rail is fixed on the top of the mounting bracket, a slider is provided on the slide rail, a slide plate is fixed on the top of the slide plate, a lifting cylinder is fixed on the top of the slide plate, a horizontal connecting rod is fixed on the top of the lifting cylinder, a two-way clamping cylinder is fixed on the bottom of the right end of the horizontal connecting rod, a splint is fixed at both ends of the two-way clamping cylinder, a support block is provided on the inner side of the bottom of the splint for supporting the bottom of the flange, a translation cylinder is fixed on the left side of the slide plate, and the translation cylinder is fixed on the mounting bracket, which can automatically clamp the separated inner barrel and take it out, making it more automated.

[0011] As a preferred embodiment, a belt conveyor is provided between the mounting frame and the separation outer barrel, which can automatically convey the removed separation outer barrel to the pressing station.

[0012] The utility model has the following beneficial effects:

[0013] By setting a removable separation inner barrel on the turntable inside the separation outer barrel, solid-liquid separation can be performed by centrifugation, with better separation effect. During centrifugal separation, the liquid inlet pipe can continuously pass the material without cleaning the filter membrane, and the separation speed is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 3 It is a structural diagram of the bidirectional clamping cylinder;

[0017] In the figure: 1. Feed pipe, 2. Bellows, 3. Lifting cylinder, 4. Bracket, 5. Liquid blocking cover, 6. Separation outer barrel, 7. Support column, 8. Support middle ring, 9. Rotating motor, 10. Turntable, 11. Separation inner barrel, 12. Support top ring, 13. Limit pin, 14. Filter membrane, 15. Two-way clamping cylinder, 16. Clamp, 17. Horizontal connecting rod, 18. Lifting cylinder, 19. Translation cylinder, 20. Slide plate, 21. Slide rail, 22. Mounting frame, 23. Belt conveyor. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example 1, as Figures 1 to 3 As shown, the utility model is a solid-liquid separation device for the production of 5-nitrobenzimidazolone, comprising a feed pipe 1, the feed pipe 1 is equipped with a bracket 4, a separation outer barrel 6 is provided below the feed pipe 1, a discharge pipe is provided at the bottom of the separation outer barrel 6, a turntable 10 is rotatably installed at the bottom of the separation outer barrel 6, a support column 7 is fixed on the top of the turntable 10, a support top ring 12 is fixed on the top of the support column 7, a separation inner barrel 11 is provided in the support top ring 12, a plurality of filter holes are evenly provided on the outer wall of the separation inner barrel 11, a filter membrane 14 is fixed on the inner wall of the separation inner barrel 11, a support flange supported on the support top ring 12 is provided on the outer side of the top of the separation inner barrel 11, and the feed pipe 1 is connected to a lifting mechanism for driving it to rise and fall.

[0020] During use, the lifting mechanism drives the feed pipe 1 to rise, and then the separation inner barrel 11 is inserted into the support top ring 12. The bottom of the separation inner barrel 11 is supported on the turntable 10, and then the lifting mechanism brings the feed pipe 1 down, and the turntable 10 drives the separation inner barrel 11 to rotate. At this time, the valve at the upper end of the feed pipe 1 is opened for feeding, and the material enters the separation inner barrel 11 for rotational centrifugal solid-liquid separation. The liquid is separated and then discharged from the drain pipe. When there is a lot of solid material in the separation inner barrel 11 after working for a period of time, the valve at the upper end of the feed pipe 1 is closed, the turntable 10 stops rotating, and the lifting mechanism drives the feed pipe 1 to rise. The separation inner barrel 11 can be taken out, and then a new empty separation inner barrel 11 is put in.

[0021] In Example 2, based on Example 1, a limiting hole is provided on the top of the support top ring 12, and a limiting pin 13 is fixed to the bottom of the support flange to cooperate with the limiting hole. When the separated inner barrel 11 is placed, the limiting pin 13 can be inserted into the limiting hole for positioning.

[0022] A supporting intermediate ring 8 is fixed to the inner side of the middle portion of the supporting column 7 , and the inner hole of the supporting intermediate ring 8 contacts the outer wall of the separation inner barrel 11 .

[0023] The lifting mechanism includes a lifting cylinder 3 fixed on a bracket 4 , a section of bellows 2 is provided on the feed pipe 1 , a guide sleeve is sleeved on the feed pipe 1 below the bellows 2 , and the guide sleeve is fixed on the bracket 4 .

[0024] A liquid blocking cover 5 is fixed on the lower outer wall of the feed pipe 1 , and the bottom of the lifting cylinder 3 is fixed to the liquid blocking cover 5 .

[0025] A rotating shaft is fixed in the middle of the bottom of the turntable 10 , and the rotating shaft is rotatably mounted on the separation outer barrel 6 . A rotating motor 9 is fixed at the bottom of the rotating shaft, and the rotating motor 9 is fixed to the bottom of the separation outer barrel 6 .

[0026] A mounting bracket 22 is provided on the left side of the separated outer barrel 6, and a horizontal slide rail 21 is fixed to the top of the mounting bracket 22, and a slider is provided on the slide rail 21, and a slide plate 20 is fixed to the top of the slider, and a lifting cylinder 18 is fixed to the top of the slide plate 20, and a horizontal connecting rod 17 is fixed to the top of the lifting cylinder 18, and a two-way clamping cylinder 15 is fixed to the bottom of the right end of the horizontal connecting rod 17, and a splint 16 is fixed at both ends of the two-way clamping cylinder 15, and a support block for supporting the bottom of the flange is provided on the inner side of the bottom of the splint 16, and a translation cylinder 19 is fixed to the left side of the slide plate 20, and the translation cylinder 19 is fixed on the mounting bracket 22.

[0027] A belt conveyor 23 is provided between the mounting frame 22 and the separation outer barrel 6. When the separation inner barrel 11 needs to be taken out, the valve at the upper end of the feed pipe 1 is closed, the turntable 10 stops rotating, the lifting cylinder 3 contracts, driving the feed pipe 1 to rise, and then the translation cylinder 19 extends, driving the two-way clamping cylinder 15 to move to the top of the separation inner barrel 11, and then the lifting cylinder 18 descends to the clamping position, and then the two-way clamping cylinder 15 contracts, the support block supports the bottom of the support flange, and then the lifting cylinder 18 extends to take out the separation inner barrel 11, and then the translation cylinder 19 contracts, driving the separation inner barrel 11 to move to the top of the belt conveyor 23, and then the lifting cylinder 18 contracts, the two-way clamping cylinder 15 extends, puts down the separation inner barrel 11, and the belt conveyor 23 starts to transport the separation inner barrel 11 to the pressing position.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0029] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A solid-liquid separation device for the production of 5-nitrobenzimidazolone, comprising a feed pipe (1), the feed pipe (1) being mounted with a bracket (4), characterized in that: A separation outer barrel (6) is provided below the feed pipe (1), a liquid discharge pipe is provided at the bottom of the separation outer barrel (6), a turntable (10) is rotatably mounted at the bottom of the separation outer barrel (6), a support column (7) is fixed on the top of the turntable (10), a support top ring (12) is fixed on the top of the support column (7), a separation inner barrel (11) is provided inside the support top ring (12), a plurality of filter holes are evenly provided on the outer wall of the separation inner barrel (11), a filter membrane (14) is fixed on the inner wall of the separation inner barrel (11), a support flange supported on the support top ring (12) is provided on the outer side of the top of the separation inner barrel (11), and the feed pipe (1) is connected to a lifting mechanism for driving the lifting thereof.

2. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 1, characterized in that: A limiting hole is provided on the top of the supporting top ring (12), and a limiting pin (13) that cooperates with the limiting hole is fixed to the bottom of the supporting flange.

3. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 2, characterized in that: A supporting intermediate ring (8) is fixed to the inner side of the middle portion of the supporting column (7), and the inner hole of the supporting intermediate ring (8) contacts the outer wall of the separation inner barrel (11).

4. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder (3) fixed on a bracket (4); a section of a bellows (2) is provided on the feed pipe (1); a guide sleeve is sleeved on the feed pipe (1) below the bellows (2); and the guide sleeve is fixed on the bracket (4).

5. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 4, characterized in that: A liquid blocking cover (5) is fixed on the lower outer wall of the feed pipe (1), and the bottom of the lifting cylinder (3) is fixed to the liquid blocking cover (5).

6. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 1, characterized in that: A rotating shaft is fixed in the middle of the bottom of the turntable (10), and the rotating shaft is rotatably mounted on the separation outer barrel (6). A rotating motor (9) is fixed at the bottom of the rotating shaft, and the rotating motor (9) is fixed at the bottom of the separation outer barrel (6).

7. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 1, characterized in that: A mounting frame (22) is provided on the left side of the separated outer barrel (6), a horizontal slide rail (21) is fixed on the top of the mounting frame (22), a slider is provided on the slide rail (21), a slide plate (20) is fixed on the top of the slider, a lifting cylinder (18) is fixed on the top of the slide plate (20), a horizontal connecting rod (17) is fixed on the top of the lifting cylinder (18), a two-way clamping cylinder (15) is fixed on the right end bottom of the horizontal connecting rod (17), a clamping plate (16) is fixed at both ends of the two-way clamping cylinder (15), a support block for supporting the bottom of the flange is provided on the inner side of the bottom of the clamping plate (16), a translation cylinder (19) is fixed on the left side of the slide plate (20), and the translation cylinder (19) is fixed on the mounting frame (22).

8. The solid-liquid separation device for the production of 5-nitrobenzimidazolone according to claim 7, characterized in that: A belt conveyor (23) is provided between the mounting frame (22) and the separation outer barrel (6).

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