Crude brominated product centrifugal treatment system for preparing brominated pyrrole nitrile

Abstract

The brominated crude product centrifugal treatment system comprises a centrifugal machine, a feeding pipe joint is arranged at the top of the centrifugal machine, and a discharging pipe joint and a mother liquor output pipe joint are arranged at the bottom of the centrifugal machine; the centrifugal machine comprises a rotary drum barrel and a rotary drum bottom which are fixedly connected, the rotary drum barrel and the rotary drum bottom are installed in a shell, the bottom of the shell is connected with a bottom plate, and a turnover machine cover is arranged on the top of the shell. An annular plate is fixedly mounted at the open end of the top of the rotary drum barrel, a cover plate is mounted in the annular plate and fixedly connected to the bottom of the machine cover, and an avoiding hole of an annular structure is formed between the inner ring of the annular plate and the outer ring of the cover plate; a plurality of discharge holes distributed circumferentially are formed in the drum bottom, and flashboards connected with the lower surface of the drum bottom in a sliding mode are arranged at the bottoms of the discharge holes respectively. According to the utility model, the phenomenon that materials which are not subjected to solid-liquid separation directly leak from the discharge holes can be solved, the problem that the materials splash from the top of the rotary drum is solved, and the separation effect is improved.

Description

Technical Field

[0001] The utility model relates to a centrifugal treatment system for a crude brominated product used for preparing bromopyrrole nitrile, and belongs to the technical field of preparing bromopyrrole nitrile. Background Art

[0002] Bromopyrrolecarbonitrile, also known as trolopride, is a white crystalline solid at room temperature and pressure. It is soluble in water but insoluble in most organic solvents and has a weak alkalinity. Bromopyrrolecarbonitrile is mainly used in the agricultural field. As an effective herbicide, it performs well in controlling leafy weeds such as grass weeds, especially leafy weeds such as grass weeds.

[0003] During the preparation of bromopyrrole nitrile, a centrifugal device is required to separate the brominated crude product into solid and liquid. Patent No. CN107520069A discloses a bottom-discharging centrifuge, including a control box, a base, a motor and a casing mounted on the base, a cover connected to the casing, a shock absorber is provided below the base, and the control box controls the operation of various components of the centrifuge; a bearing seat and a drum are provided in the casing, a rotating shaft is provided in the bearing seat, a rotary distributor is provided on the top of the drum, a feed pipe is connected to the upper end of the rotary distributor, and a discharge hopper is connected to the bottom of the drum; a scraper is connected to the cover.

[0004] The centrifugal device disclosed in the above patent has the following technical problems during use:

[0005] 1. There are discharge holes on the bottom of the drum. These discharge holes are usually not closed when the drum is running. Therefore, in the early stage of separation, the material that has not been separated from the solid and liquid will leak directly from the discharge holes, reducing the separation effect;

[0006] 2. The material will splash from the top of the drum as it rotates, and the splashed solid material will be carried away by the liquid phase, resulting in a decrease in the separation effect.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] The utility model aims at the deficiencies in the background technology and provides a centrifugal treatment system for crude brominated products for preparing bromopyrrole nitrile, which can solve the problem that materials without solid-liquid separation directly leak out from the discharge hole, solve the problem that materials splash from the top of the drum, and improve the separation effect.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A centrifugal treatment system for a crude brominated product for preparing bromopyrrole nitrile comprises a centrifuge, a feed pipe joint is arranged on the top of the centrifuge, the feed pipe joint is connected to the bottom of a desolventizing kettle through a pipeline, and a discharge pipe joint and a mother liquor output pipe joint are arranged at the bottom of the centrifuge;

[0011] The centrifuge comprises a fixedly connected drum and a drum bottom, the drum and the drum bottom are installed inside a shell, the bottom of the shell is connected to the bottom plate, and a reversible cover is provided on the top of the shell;

[0012] A ring plate is fixedly installed on the open end of the top of the drum, a cover plate is installed inside the ring plate, the cover plate is fixed to the bottom of the machine cover, and an annular avoidance hole is formed between the inner ring of the ring plate and the outer ring of the cover plate;

[0013] A plurality of discharge holes distributed in a circumference are provided on the bottom of the drum, and gate plates slidably connected to the lower surface of the bottom of the drum are respectively provided at the bottom of the discharge holes.

[0014] Furthermore, the discharge pipe joint is connected to the bromination crude product collection tank through a pipeline, and the mother liquor output pipe joint is connected to the centrifugal mother liquor storage tank through a pipeline.

[0015] Furthermore, a vertically arranged rotating shaft is passed through the bottom of the rotating drum, the rotating shaft is connected to the bottom plate through a bearing seat, and the bottom end of the rotating shaft is connected to the driving motor through a belt drive.

[0016] Furthermore, the rotating shaft is a hollow structure, and a diverter plate with a conical structure is fixedly installed on the top end of the rotating shaft.

[0017] Furthermore, the feed pipe joint is fixedly installed in the machine cover along the vertical direction, and the axis of the feed pipe joint is colinearly arranged with the axis of the diverter plate.

[0018] Furthermore, the avoidance hole is used to avoid the piston rod of the vertical telescopic cylinder, the vertical telescopic cylinder is fixedly connected to the top of the cover plate, and a scraper is installed at the bottom end of the piston rod of the vertical telescopic cylinder.

[0019] Furthermore, the gate plate is installed on the head of a horizontal telescopic cylinder, and the horizontal telescopic cylinder is fixed to the lower surface of the drum.

[0020] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0021] A ring plate is fixedly installed on the top open end of the drum, and a cover plate is installed inside the ring plate. The ring plate and the cover plate cooperate to prevent the material from splashing from the top of the drum, thereby ensuring the separation effect.

[0022] The gate plate can close the discharge hole on the bottom of the drum to prevent the material that has not been separated from the solid-liquid from leaking directly from the discharge hole. After the solid-liquid separation of the material is completed, the gate plate will open the discharge hole under the action of the horizontal telescopic cylinder to ensure the separation effect.

[0023] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of a centrifuge;

[0026] Figure 3 It is a schematic diagram of the structure of the drum bottom and the drum tube.

[0027] In the figure, 1-bottom plate, 2-drum bottom, 3-drum tube, 4-shell, 5-rotating shaft, 6-diverter plate, 7-machine cover, 8-feed pipe joint, 9-cover plate, 10-ring plate, 11-avoidance hole, 12-vertical telescopic cylinder, 13-scraper, 14-discharge hole, 15-gate, 16-horizontal telescopic cylinder, 17-discharge pipe joint, 18-mother liquor output pipe joint, 19-desolventizing kettle, 20-bromination crude product collection tank, 21-centrifugal mother liquor storage tank. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0029] like Figure 1-Figure 3 As shown together, the utility model provides a centrifugal processing system for a crude bromination product for preparing bromopyrrole carbonitrile, comprising a centrifuge, a feed pipe joint 8 is provided at the top of the centrifuge, the feed pipe joint 8 is connected to the bottom of a desolventizing kettle 19 through a pipeline, a discharge pipe joint 17 and a mother liquor output pipe joint 18 are provided at the bottom of the centrifuge, the discharge pipe joint 17 is connected to a crude bromination product collecting tank 20 through a pipeline, and the mother liquor output pipe joint 18 is connected to a centrifugal mother liquor storage tank 21 through a pipeline.

[0030] The centrifuge comprises a drum tube 3 and a drum bottom 2 which are fixedly connected. The drum tube 3 and the drum bottom 2 are installed inside a housing 4. The bottom of the housing 4 is connected to the bottom plate 1. The top of the housing 4 is provided with a reversible cover 7.

[0031] A vertically arranged rotating shaft 5 is passed through the inside of the rotating drum bottom 2. The rotating shaft 5 is connected to the bottom plate 1 through a bearing seat, and the bottom end of the rotating shaft 5 is connected to the driving motor through a belt drive.

[0032] The rotating shaft 5 is a hollow structure, and a diverter plate 6 of a conical structure is fixedly installed on the top of the rotating shaft 5. The feed pipe joint 8 is fixedly arranged in the machine cover 7 along the vertical direction, and the axis of the feed pipe joint 8 is arranged in a colinear manner with the axis of the diverter plate 6. The diverter plate 6 rotates at high speed with the rotating shaft 5, and can throw the material input by the feed pipe joint 8 onto the inner wall of the drum 3.

[0033] A ring plate 10 is fixedly mounted on the top open end of the drum 3, a cover plate 9 is mounted inside the ring plate 10, the cover plate 9 is fixed to the bottom of the cover 7, and an annular escape hole 11 is formed between the inner ring of the ring plate 10 and the outer ring of the cover plate 9. The ring plate 10 cooperates with the cover plate 9 to prevent materials from splashing from the top of the drum 3.

[0034] The avoidance hole 11 is used to avoid the piston rod of the vertical telescopic cylinder 12 . The vertical telescopic cylinder 12 is fixedly connected to the top of the cover plate 9 . A scraper 13 is installed at the bottom end of the piston rod of the vertical telescopic cylinder 12 .

[0035] The drum bottom 2 is provided with a plurality of circumferentially distributed discharge holes 14, and the bottoms of the discharge holes 14 are respectively provided with gate plates 15 slidably connected to the lower surface of the drum bottom 2, and the gate plates 15 are installed on the heads of horizontal telescopic cylinders 16, which are fixedly connected to the lower surface of the drum bottom 2, and provide power for the movement of the gate plates 15.

[0036] The horizontal telescopic cylinder 16 in the utility model can rotate with the drum bottom 2. The rotating shaft 5 is a hollow structure, and an air source pipe can be penetrated inside the rotating shaft 5 to provide an air source for the horizontal telescopic cylinder 16.

[0037] The specific working principle of this utility model:

[0038] The material in the desolventizing kettle 19 enters the centrifuge from the feed pipe joint 8 to achieve solid-liquid separation, the separated crude bromination product enters the crude bromination product collection tank 20 from the unloading pipe joint 17, and the separated mother liquor enters the centrifugal mother liquor storage tank 21 from the mother liquor output pipe joint 18.

[0039] A ring plate 10 is fixedly mounted on the top open end of the drum 3, and a cover plate 9 is mounted inside the ring plate 10. The ring plate 10 cooperates with the cover plate 9 to prevent materials from splashing from the top of the drum 3, thereby ensuring the separation effect.

[0040] In the initial stage of separation of materials inside the centrifuge, the gate plate 15 closes the discharge hole 14 on the bottom 2 of the drum to prevent the material that has not been separated from the solid and liquid from leaking directly from the discharge hole 14. After the solid-liquid separation of the materials is completed, the gate plate 15 will open the discharge hole 14 under the action of the horizontal telescopic cylinder 16 to ensure the separation effect.

[0041] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A centrifugal treatment system for the preparation of bromopyrrole carbonitrile crude bromide, characterized in that: The centrifuge comprises a centrifuge, wherein a feed pipe joint (8) is provided at the top of the centrifuge, the feed pipe joint (8) is connected to the bottom of a desolventizing kettle (19) through a pipeline, and a discharge pipe joint (17) and a mother liquor output pipe joint (18) are provided at the bottom of the centrifuge; The centrifuge comprises a rotating drum (3) and a rotating drum bottom (2) which are fixedly connected, the rotating drum (3) and the rotating drum bottom (2) being installed inside a housing (4), the bottom of the housing (4) being connected to a bottom plate (1), and a reversible cover (7) being provided on the top of the housing (4); A ring plate (10) is fixedly mounted on the top open end of the drum (3), a cover plate (9) is mounted inside the ring plate (10), the cover plate (9) is fixedly connected to the bottom of the machine cover (7), and an avoidance hole (11) of an annular structure is formed between the inner ring of the ring plate (10) and the outer ring of the cover plate (9); A plurality of discharge holes (14) distributed in a circumferential manner are provided on the bottom (2) of the drum, and gate plates (15) slidably connected to the lower surface of the bottom (2) of the drum are respectively provided at the bottom of the discharge holes (14).

2. The centrifugal treatment system for the crude brominated product for preparing bromopyrrole carbonitrile according to claim 1, characterized in that: The discharge pipe joint (17) is connected to the bromination crude product collection tank (20) through a pipeline, and the mother liquor output pipe joint (18) is connected to the centrifugal mother liquor storage tank (21) through a pipeline.

3. The centrifugal treatment system for the crude brominated product for preparing bromopyrrole carbonitrile according to claim 1, characterized in that: A vertically arranged rotating shaft (5) is passed through the bottom (2) of the rotating drum. The rotating shaft (5) is connected to the bottom plate (1) via a bearing seat. The bottom end of the rotating shaft (5) is connected to the driving motor via a belt drive.

4. The centrifugal treatment system for the crude brominated product for preparing bromopyrrole carbonitrile according to claim 3, characterized in that: The rotating shaft (5) is a hollow structure, and a diverter plate (6) with a conical structure is fixedly mounted on the top end of the rotating shaft (5).

5. The centrifugal treatment system for the crude brominated product for preparing bromopyrrolecarbonitrile according to claim 4, characterized in that: The feed pipe joint (8) is fixedly arranged in the machine cover (7) along the vertical direction, and the axis of the feed pipe joint (8) is arranged in a colinear relationship with the axis of the diverter plate (6).

6. The centrifugal treatment system for the crude brominated product for preparing bromopyrrole carbonitrile according to claim 1, characterized in that: The avoidance hole (11) is used to avoid the piston rod of the vertical telescopic cylinder (12). The vertical telescopic cylinder (12) is fixedly connected to the top of the cover plate (9). A scraper (13) is installed at the bottom end of the piston rod of the vertical telescopic cylinder (12).

7. The centrifugal treatment system for the crude brominated product for preparing bromopyrrolecarbonitrile according to claim 1, characterized in that: The gate plate (15) is mounted on the head of a horizontal telescopic cylinder (16), and the horizontal telescopic cylinder (16) is fixed to the lower surface of the drum bottom (2).

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