Efficient and stable sodium pyrrolidone carboxylate filtering device

Abstract

The utility model discloses an efficient and stable type filtering device for sodium pyrrolidone carboxylate. The efficient and stable type filtering device comprises a coarse filter and a precision filter which are connected in sequence, the coarse filter comprises a shell with a rectangular section, two pull-out type filter assemblies which are distributed up and down are arranged in the shell, and the pull-out directions of the two pull-out type filter assemblies are opposite; the side wall of the shell is provided with an opening matched with the pull-out type filtering assembly; a drawing cylinder fixed on the outer side wall of the shell is arranged above the outer side of the opening, and a drawing bracket connected with the drawing type filtering assembly is arranged at the output end of the drawing cylinder; the drawing type filter assembly comprises two sealing end plates matched with the opening, and a filter screen is arranged in the middle between the two sealing end plates; the filter screen is rotationally connected with the sealing end plates, and a rotary driving motor used for driving the filter screen to turn over is further arranged on the outer side of the sealing end plate located on the outer side. The utility model has the characteristics that the filter element is convenient to clean, and the filtering operation can be normally carried out when the filter element is replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter device, especially a pyrrolidone carboxylic acid sodium high -efficient stable type filter device. BACKGROUND

[0002] When producing pyrrolidone carboxylic acid sodium, the pyrrolidone carboxylic acid sodium paste needs to be diluted to form a solution and then be sent into a decoloring kettle, and activated carbon and purified water are added in proportion, and then the solution is stirred and decolorized under heating, and the mixed solution after decolorization needs to be sent into a filter to filter the activated carbon and insoluble impurities in the mixed solution. However, in the existing filter, the activated carbon is easy to accumulate and block the filter element, so the filter element needs to be removed and cleaned before it can be used again, which is troublesome to operate, and the filter cannot perform filtering operation when the filter element is replaced. Therefore, the existing technology has the problems of troublesome filter element cleaning and inability to perform normal filtering operation when the filter element is replaced. SUMMARY

[0003] The utility model discloses a kind of pyrrolidone carboxylic acid sodium high -efficient stable type filter devices. The utility model has the characteristics of convenient filter element cleaning and normal filtering operation when filter element is replaced.

[0004] The technical scheme of the utility model discloses a kind of pyrrolidone carboxylic acid sodium high -efficient stable type filter devices, including the filter element of coarse filter and precision filter in turn;The coarse filter includes the shell of the section of rectangle, two pull-out type filter assemblies are arranged in the shell, and the pull direction of two pull-out type filter assemblies is opposite;The lateral wall of the shell is equipped with the opening matched with pull-out type filter assembly;The upper side outside opening is equipped with the pull cylinder fixed to the lateral wall of shell, and the output end of pull cylinder is equipped with the pull bracket connected with pull-out type filter assembly;Pull-out type filter assembly includes two sealing end plates matched with opening, and the middle part between two sealing end plates is equipped with filter screen;Filter screen and sealing end plate are rotatably connected, and the outside of the outside sealing end plate is also equipped with the rotary drive motor for driving filter screen overturning.

[0005] In the foregoing pyrrolidone carboxylic acid sodium high -efficient stable type filter device, the inner and outer sides of the upper and lower end faces of the opening are provided with sealing stoppers, the outer side of the inner sealing end plate is provided with a matched outer sealing groove, and the inner side of the outer sealing end plate is provided with a matched inner sealing groove.

[0006] In the foregoing pyrrolidone carboxylic acid sodium high -efficient stable type filter device, the pull bracket is provided with a spray driving cylinder, the output end of the spray driving cylinder is provided with a bracket, the bottom of the bracket is provided with a group of spray nozzles, and the spray nozzles are connected with a spray pool through a hose.

[0007] Compared with the prior art, the utility model discloses a rough filter, a close filter and a bacterium -inhibiting filter that are connected in sequence, can carry out effective grading filtration to sodium pyrrolidone carboxylate mixed solution, and further improve the filtering effect and the quality of product, at the same time, the rough filter is composed of a shell and upper and lower distribution pull -out type filter assembly, so that when one of the pull -out type filter assembly is cleaned, normal filtering operation can be ensured, and the service life of the filter screen can be effectively prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the structural schematic diagram of the utility model.

[0009] The marks in the drawing are: 1-rough filter, 2-precision filter, 3-shell, 4-pull -out type filter assembly, 5-opening, 6-pull -out cylinder, 7-pull -out support, 8-sealing end plate, 9-filter screen, 10-rotary drive motor, 11-sealing stop, 12-outer sealing groove, 13-inner sealing groove, 14-spraying drive cylinder, 15-support, 16-spraying nozzle. DETAILED DESCRIPTION

[0010] The utility model will be further explained in connection with the drawing and example, but does not take as the basis of the limitation of the utility model.

[0011] Example. Sodium pyrrolidone carboxylate high -efficient stable type filter device, constitutes as shown in Figure 1 The rough filter 1 includes the shell 3 with the rectangular section, is equipped with two upper and lower distribution pull -out type filter assemblies 4 in the shell 3, and the pull -out direction of two pull -out type filter assemblies 4 is opposite, the lateral wall of shell 3 is equipped with the opening 5 with pull -out type filter assembly 4 cooperation, the upper side outside opening 5 is equipped with the pull -out cylinder 6 fixed in the lateral wall of shell 3, and the output end of pull -out cylinder 6 is equipped with the pull -out support 7 connected with pull -out type filter assembly 4, and pull -out type filter assembly 4 includes two sealing end plates 8 with opening 5 cooperation, and the middle portion between two sealing end plates 8 is equipped with filter screen 9, the rotary connection between filter screen 9 and sealing end plate 8, the outside of the outside sealing end plate 8 is also equipped with rotary drive motor 10 for driving filter screen 9 overturning.

[0012] The inner and outer sides of the upper and lower end faces of the opening 5 are provided with sealing end plates 8, the outer end of the inner sealing end plate 8 is provided with a matched outer sealing groove 12, and the inner end of the outer sealing end plate 8 is provided with a matched inner sealing groove 13.

[0013] The pulling support 7 is provided with a spraying driving cylinder 14, the output end of the spraying driving cylinder 14 is provided with a support 15, the bottom of the support 15 is provided with a group of spraying nozzles 16, and the spraying nozzles 16 are connected with a spraying water pool through a hose.

[0014] The filter screen is provided with a bottom frame for being connected with the rotating shaft.

[0015] Preferably, a recovery pool is arranged below the opening.

[0016] The working process of the utility model is as follows: the mixed solution is sent into the inlet of the coarse filter at the top, the mixed solution is filtered by the pull-out type filter assemblies distributed upwards and downwards in sequence, and then flows out from the bottom outlet, is pumped into the precision filter for filtering, and the pyrrolidone carboxylate sodium product is obtained after filtering.

[0017] When one of the pull-out type filter assemblies needs to be cleaned, the pull-out cylinder starts to work and pulls out the pull-out type filter assembly to the outside of the shell, at this time, the outer sealing groove of the sealing end plate on the inside is matched with the inner sealing end plate, and sealing is realized; then, the rotary driving motor starts to work and drives the bottom frame and the filter screen to overturn by 180 degrees, so that the filter surface faces downward, the filter screen is washed by workers, and filter residues and the like fall into the recovery pool for recovery. After cleaning, the filter screen is overturned by 180 degrees, the pull-out cylinder is reset, the filter screen is reset, and at this time, the inner sealing groove of the sealing end plate on the outside is matched with the outer sealing end plate.

[0018] Preferably, the pull-out support is provided with a spraying driving cylinder, the spraying driving cylinder drives the spraying nozzles to move, and the filter screen is sprayed, so that manual spraying and cleaning of the filter screen are not needed, and the labor intensity of workers is reduced. Specifically, the spraying driving cylinder works, drives the support and the spraying nozzles to move to the side of the shell, the water pump sends spraying water from the spraying water pool to the spraying nozzles, the spraying nozzles spray the screen surface of the filter screen from top to bottom, and filter residues on the lower surface of the filter screen are removed.

Claims

1. A high efficiency stable filter device for pyrrolidone carboxylic acid sodium, characterized in that: The utility model relates to a filter device, including coarse filter (1) and precision filter (2) that connect in sequence, coarse filter (1) includes the casing (3) of rectangular section, is equipped with two pull-out type filter assemblies (4) that distribute up and down in casing (3), and the pull-out direction of two pull-out type filter assemblies (4) is opposite, the lateral wall of casing (3) is equipped with the opening (5) with pull-out type filter assembly (4) cooperation, the upper side of opening (5) outside is equipped with the pull-out cylinder (6) fixed in the lateral wall of casing (3), and the output end of pull-out cylinder (6) is equipped with the pull-out support (7) with pull-out type filter assembly (4) connection, pull-out type filter assembly (4) includes two sealing end plates (8) with opening (5) cooperation, and the middle part between two sealing end plates (8) is equipped with filter screen (9), the rotary connection between filter screen (9) and sealing end plate (8) is located the outside sealing end plate (8) outside still is equipped with the rotary drive motor (10) for driving filter screen (9) overturn.

2. The pyrrolidone carboxylic acid sodium high-efficiency stable filtering device according to claim 1, characterized in that: The inner and outer sides of the upper and lower end faces of opening (5) are provided with sealing stoppers (11), the outer end of the inner sealing end plate (8) is provided with a matched outer sealing groove (12), and the inner end of the outer sealing end plate (8) is provided with a matched inner sealing groove (13).

3. The pyrrolidone carboxylic acid sodium high-efficiency stable filter device according to claim 1, characterized in that: The pull-out support (7) is provided with a spray driving cylinder (14), the output end of the spray driving cylinder (14) is provided with a support (15), the bottom of the support (15) is provided with a group of spray nozzles (16), and the spray nozzles (16) are connected with a spray water tank through a hose.

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