Filtering equipment for producing waterborne polyurethane emulsion

Abstract

The utility model discloses filtering equipment for producing waterborne polyurethane emulsion, relates to the technical field of waterborne polyurethane, and provides the following scheme aiming at the problems that impurities still remain on a first filter screen, the machine needs to be stopped and the first filter screen can be taken down to be cleaned, and the practicability is low in the background technology. Comprising a primary filter cylinder, a flange is fixedly arranged on the outer wall of the upper portion of the primary filter cylinder, a feeding mechanism is arranged on the upper portion of the primary filter cylinder, the feeding mechanism comprises a mounting cover and two limiting pipes, two material taking openings are formed in the outer wall of the top of the mounting cover, and the two limiting pipes penetrate through the mounting cover and are fixedly arranged on the outer wall of the top of the mounting cover; the primary filtering assembly comprises a servo motor connected to the outer wall of the top of the mounting cover through a bolt and a connecting shaft connected to the outer wall of the bottom end of an output shaft of the servo motor through a coupler. According to the utility model, the filter screen and the filter element can be replaced and cleaned without shutdown, so that the filter screen and the filter element are prevented from being blocked by impurities, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waterborne polyurethane technical field especially relates to a filter equipment for waterborne polyurethane emulsion production. BACKGROUND

[0002] Waterborne polyurethane is a new polyurethane system with water instead of organic solvent as dispersion medium, also called water dispersion polyurethane, waterborne polyurethane or water-based polyurethane, waterborne polyurethane has the advantages of no pollution, safe and reliable, excellent mechanical property, good compatibility, easy modification and the like, in the waterborne polyurethane production process, waterborne polyurethane emulsion needs to be filtered.

[0003] Through the retrieval, Chinese patent (application number is "202322412644.9") discloses "a filter device for waterborne polyurethane processing", the above-mentioned device includes the base, the base upper surface is fixedly connected with four support legs, the support leg is provided with the filter box, the filter box has the internal chamber, the internal chamber in the filter box is provided with the stirring assembly and the first filter assembly, the filter box left side wall is opened with the pull-out mouth, the pull-out mouth is inserted with the second filter assembly, the second filter assembly inserts the pull-out mouth and falls into the internal chamber in the filter box, but, the above-mentioned device in the use process, although the first filter screen can be vibrated, but the impurity still can remain on the first filter screen, needs to stop and take down the first filter screen to clean, low practicality. UTILITY MODEL CONTENT

[0004] The utility model provides a filter equipment for waterborne polyurethane emulsion production has solved the problem that the waterborne polyurethane filter device of comparative document uses still can remain the impurity on the first filter screen, needs to stop and take down the first filter screen to clean, low practicality.

[0005] In order to realize the above-mentioned purpose, the utility model has adopted the following technical scheme:

[0006] The utility model provides a filter equipment for waterborne polyurethane emulsion production, including the flange that is fixed with primary filter cartridge on the top outer wall, the primary filter cartridge top is equipped with feeding mechanism, the feeding mechanism includes the installation cover that opens two material taking mouths on the top outer wall and two limit tube respectively through and fixed with on the top outer wall of installation cover, be equipped with primary filter assembly in the primary filter cartridge, primary filter assembly includes servo motor through bolt connection on the top outer wall of installation cover, the connecting shaft that passes through the coupling and is connected on the bottom outer wall of servo motor output shaft, the mounting bracket that opens four mounting slots on the top outer wall, four mounting rings that are respectively set in four mounting slots and filter screen embedded on the inner wall of mounting ring middle part, be equipped with conveying mechanism below the primary filter cartridge, conveying mechanism includes electromagnetic three way valve, connecting pipe and two conveying pipes, two conveying pipes one end is equipped with secondary filter mechanism, secondary filter mechanism includes the secondary filter cartridge that is fixed with on the outer wall of conveying pipe one end, the support ring that is fixed with on the lower inner wall of secondary filter cartridge, the lower filter plate that is slidably set in the secondary filter cartridge, a plurality of clamping rods that are respectively fixed with on the bottom outer wall of lower filter plate, the connecting cylinder that passes through bolt connection on the top outer wall of lower filter plate, the filter core that is set in the connecting cylinder, the upper filter plate that passes through bolt connection on the top outer wall of connecting cylinder and a plurality of threaded columns that are respectively fixed with on the top outer wall of upper filter plate.

[0007] Preferably, the installation cover is bolted to the top outer wall of the flange, both the limit tubes have a top cap screwed on the top outer wall, and both the top caps have a liquid inlet pipe fixed on the top inner wall.

[0008] Preferably, the mounting bracket is fixed to the lower outer wall of the connecting shaft, a fixing block is fixed to the inner wall of the middle part of the primary filter cartridge, the connecting shaft passes through and is connected to the bottom outer wall of the fixing block through a bearing, both the inner walls of the four mounting slots have two clamping grooves, both the top outer walls of the four mounting rings have two threaded holes, both the outer walls of the four mounting rings have two clamping blocks fixed thereon, and the clamping blocks are clamped into the clamping grooves.

[0009] Through the above scheme, the waterborne polyurethane emulsion is conveyed into the two limit tubes through the two liquid inlet pipes, the waterborne polyurethane emulsion contacts the two filter screens, the filter screens filter the waterborne polyurethane emulsion, when the filter screens need to be cleaned, the servo motor output shaft rotates to drive the mounting bracket to rotate, the mounting bracket drives the four filter screens to rotate, so that two clean filter screens rotate below the two limit tubes and the filter screens are concentric with the limit tubes, and the mounting ring and the filter screen can be removed by screwing the lower outer thread of the pull rod into the threaded hole on the mounting ring.

[0010] Preferably, the connecting pipe is fixed to the bottom inner wall of the primary filter cartridge, and the lower part of the connecting pipe is screwed to the inner wall of the water inlet end of the electromagnetic three-way valve.

[0011] Preferably, the support ring top outer wall is provided with a plurality of fixing holes, and a plurality of clamping rods are respectively inserted into the fixing holes, the connecting cylinder is slidably sleeved on the secondary filter cylinder, and the upper filter plate is slidably sleeved on the secondary filter cylinder.

[0012] Preferably, the secondary filter cylinder is provided with a drain pipe below, and the drain pipe top two ends are respectively fixed on the two secondary filter cylinder bottom inner walls.

[0013] Through the above scheme, the water-based polyurethane in the primary filter cylinder is transported into one of the secondary filter cylinders, so that the filter core filters the water-based polyurethane again, when the filter core needs to be replaced and cleaned, the electromagnetic three-way valve is started, so that the other conveying pipe transports the water-based polyurethane, and the rod-shaped part with a threaded hole at the bottom is screwed on the threaded column, so that the mounting ring and the filter core can be pulled out.

[0014] The utility model discloses the beneficial effects are:

[0015] The servo motor output shaft rotates and drives the mounting frame to rotate, the mounting frame drives the four filter screens to rotate, two clean filter screens rotate below the two limiting pipes, and the filter screen is concentric with the limiting pipe, the outer thread of the pull rod at the lower part is screwed in the threaded hole on the mounting ring, and the mounting ring and the filter screen can be taken down, when the filter core needs to be replaced and cleaned, the electromagnetic three-way valve is started, so that the other conveying pipe transports the water-based polyurethane, and the rod-shaped part with a threaded hole at the bottom is screwed on the threaded column, so that the mounting ring and the filter core can be pulled out, the filter screen and the filter core can be replaced and cleaned without stopping, the filter screen and the filter core are prevented from being blocked by impurities, and practicality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses a kind of overall main view cross-sectional structure schematic diagram for the filter equipment for water-based polyurethane emulsion production.

[0017] Figure 2 The utility model discloses a kind of overall cross-sectional structure schematic diagram for the filter equipment for water-based polyurethane emulsion production.

[0018] Figure 3 The utility model discloses a kind of main view cross-sectional structure schematic diagram for the feed mechanism of the filter equipment for water-based polyurethane emulsion production.

[0019] Figure 4 The utility model discloses a kind of main view structure schematic diagram for the primary filter subassembly of the filter equipment for water-based polyurethane emulsion production.

[0020] Figure 5The utility model provides a mounting ring and filter screen main view section structure schematic diagram of filter equipment for waterborne polyurethane emulsion production are proposed.

[0021] Figure 6 The utility model provides a conveying mechanism main view structure schematic drawing of filter equipment for waterborne polyurethane emulsion production are proposed.

[0022] Figure 7 The utility model provides a secondary filter mechanism main view section structure schematic diagram of filter equipment for waterborne polyurethane emulsion production are proposed.

[0023] Figure 8 The utility model provides an attached Figure 7 The enlarged structure schematic diagram of A place in middle.

[0024] In the drawing: 1, primary filter cylinder;2, feeding mechanism;201, installation cover;202, limit tube;203, top cover;3, primary filter subassembly;301, servo motor;302, connecting shaft;303, mounting bracket;304, fixed block;305, mounting ring;306, clamping block;307, filter screen;4, conveying mechanism;401, electromagnetic three-way valve;402, connecting pipe;403, conveying pipe;5, secondary filter mechanism;501, secondary filter cylinder;502, support ring;503, lower filter plate;504, clamping rod;505, connecting cylinder;506, filter core;507, upper filter plate;508, threaded column;509, cylinder cover;6, liquid discharge pipe. Specific implementation

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0026] Embodiment 1, refer to Figures 1-5The utility model provides a filter equipment for waterborne polyurethane emulsion production, including the flange that is fixed with primary filter cylinder 1 on the top outer wall, is equipped with feeding mechanism 2 on the top of filter cylinder 1, and feeding mechanism 2 includes the installation cover 201 that is opened with two material taking mouths on the top outer wall and two limit tubes 202 respectively through and fixed with on the top outer wall of installation cover 201, installation cover 201 is connected on the top outer wall of flange through bolt, the top outer wall of two limit tubes 202 is all screwed with top cover 203, and the top inner wall of two top covers 203 is all fixed with liquid inlet pipe, is equipped with primary filter assembly 3 in primary filter cylinder 1, and primary filter assembly 3 includes servo motor 301 that is connected on the top outer wall of installation cover 201 through bolt, the connecting shaft 302 that is connected on the bottom end outer wall of servo motor 301 output shaft through coupling, the mounting bracket 303 that is opened with four mounting slots on the top outer wall, four mounting rings 305 respectively set in four mounting slots and filter screen 307 embedded on the middle inner wall of mounting ring 305, and mounting bracket 303 is fixed on the lower part outer wall of connecting shaft 302, and the fixed block 304 is fixed on the middle inner wall of primary filter cylinder 1, and connecting shaft 302 is through bearing and is connected on the bottom outer wall of fixed block 304, and the inner wall of four mounting slots is all opened with two clamping grooves, and the top outer wall of four mounting rings 305 is all opened with two threaded holes, and the outer wall of four mounting rings 305 is all fixed with two clamping blocks 306, and a plurality of clamping blocks 306 are clamped in a plurality of clamping grooves respectively.

[0027] Example 2, with reference to Figures 6-8The filtration equipment for producing water-based polyurethane emulsion also comprises a conveying mechanism 4 and a liquid discharge pipe 6. The conveying mechanism 4 comprises an electromagnetic three-way valve 401, a connecting pipe 402 and two conveying pipes 403. The upper part of the connecting pipe 402 is fixedly arranged on the inner wall of the bottom of the primary filter cylinder 1, and the lower part of the connecting pipe 402 is screwed on the inner wall of the water inlet end of the electromagnetic three-way valve 401. One end of each of the two conveying pipes 403 is screwed on the inner wall of each of the two water outlet ends of the electromagnetic three-way valve 401. Each of the two conveying pipes 403 is provided with a secondary filter mechanism 5 at one end. The secondary filter mechanism 5 comprises a secondary filter cylinder 501 fixedly arranged on the outer wall of one end of the conveying pipe 403, a support ring 502 fixedly arranged on the inner wall of the lower part of the secondary filter cylinder 501, a lower filter plate 503 slidably sleeved in the secondary filter cylinder 501, a plurality of clamping rods 504 fixedly arranged on the outer wall of the bottom of the lower filter plate 503, respectively, a connecting cylinder 505 connected to the outer wall of the top of the lower filter plate 503 by means of bolts, a filter core 506 sleeved in the connecting cylinder 505, an upper filter plate 507 connected to the outer wall of the top of the connecting cylinder 505 by means of bolts, and a plurality of threaded columns 508 fixedly arranged on the outer wall of the top of the upper filter plate 507, respectively. The primary filter cylinder 1, the electromagnetic three-way valve 401 and the two secondary filter cylinders 501 are externally provided with a rack (not shown in the figure). The rack is composed of square pipes which are welded together. A plurality of fixing holes are formed in the outer wall of the top of the support ring 502. The plurality of clamping rods 504 are respectively inserted into the plurality of fixing holes. The connecting cylinder 505 is slidably sleeved in the secondary filter cylinder 501. The upper filter plate 507 is slidably sleeved in the secondary filter cylinder 501. A cylinder cover 509 is connected to the outer wall of the top of the secondary filter cylinder 501 by means of bolts. The cylinder cover 509 prevents the water-based polyurethane from splashing when the conveying pipe 403 conveys the water-based polyurethane. The top of the liquid discharge pipe 6 is fixedly arranged on the inner wall of the bottom of each of the two secondary filter cylinders 501.

[0028] Working principle: The two liquid inlet pipes convey the water-based polyurethane emulsion into the two limiting pipes 202. The water-based polyurethane contacts the two filter screens 307. The filter screens 307 filter the water-based polyurethane. When the filter screens 307 need to be cleaned, the output shaft of the servo motor 301 drives the mounting frame 303 to rotate. The mounting frame 303 drives the four filter screens 307 to rotate. Two clean filter screens 307 are rotated to below the two limiting pipes 202 and are concentric with the limiting pipes 202. The mounting ring 305 and the filter screens 307 can be removed by screwing the lower rod with external threads into the threaded holes on the mounting ring 305. The conveying pipe 403 conveys the water-based polyurethane in the primary filter cylinder 1 into one of the secondary filter cylinders 501. The filter core 506 filters the water-based polyurethane again. When the filter core 506 needs to be replaced or cleaned, the electromagnetic three-way valve 401 is started. Another conveying pipe 403 conveys the water-based polyurethane. The rod-shaped part with a threaded hole at the bottom is screwed on the threaded column 508. The mounting ring 305 and the filter core 506 can be pulled out.

[0029] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A filtering device for the production of aqueous polyurethane emulsions, comprising an initial filter cartridge (1) with a flange fixed on the upper outer wall, characterized in that, The upper portion of the primary filter cartridge (1) is provided with a feeding mechanism (2), which comprises a mounting cover (201) with two feeding openings on the top outer wall and two limiting tubes (202) penetrating through and fixed to the top outer wall of the mounting cover (201) respectively; The primary filter cartridge (1) is internally provided with a primary filter assembly (3), which comprises a servo motor (301) fixed to the top outer wall of the mounting cover (201) by bolts, a connecting shaft (302) connected to the bottom end outer wall of the output shaft of the servo motor (301) through a shaft coupling, a mounting bracket (303) with four mounting grooves on the top outer wall, four mounting rings (305) respectively sleeved in the four mounting grooves, and a filter screen (307) embedded on the middle inner wall of the mounting ring (305); The lower portion of the primary filter cartridge (1) is provided with a conveying mechanism (4), which comprises an electromagnetic three-way valve (401), a connecting pipe (402) and two conveying pipes (403); One end of each of the two conveying pipes (403) is provided with a secondary filter mechanism (5), which comprises a secondary filter cartridge (501) fixed to the outer wall of one end of the conveying pipe (403), a supporting ring (502) fixed to the lower inner wall of the secondary filter cartridge (501), a lower filter plate (503) slidingly sleeved in the secondary filter cartridge (501), a plurality of clamping rods (504) respectively fixed to the bottom outer wall of the lower filter plate (503), a connecting cylinder (505) connected to the top outer wall of the lower filter plate (503) by bolts, a filter core (506) sleeved in the connecting cylinder (505), an upper filter plate (507) connected to the top outer wall of the connecting cylinder (505) by bolts, and a plurality of threaded columns (508) respectively fixed to the top outer wall of the upper filter plate (507).

2. The filtering apparatus for producing waterborne polyurethane emulsion according to claim 1, wherein, The mounting cover (201) is connected to the top outer wall of the flange by bolts, the top inner wall of each of the two limiting tubes (202) is provided with a top cover (203) screwed thereon, and the top inner wall of each of the two top covers (203) is fixed with a liquid inlet pipe.

3. The filtering apparatus for producing waterborne polyurethane emulsion according to claim 1, wherein, The mounting bracket (303) is fixed to the lower portion of the connecting shaft (302), the middle inner wall of the primary filter cartridge (1) is fixed with a fixing block (304), the connecting shaft (302) penetrates through and is connected to the bottom outer wall of the fixing block (304) through a bearing, the inner wall of each of the four mounting grooves is provided with two clamping grooves, the top outer wall of each of the four mounting rings (305) is provided with two threaded holes, the outer wall of each of the four mounting rings (305) is fixed with two clamping blocks (306), and the plurality of clamping blocks (306) are clamped in the plurality of clamping grooves respectively.

4. The filtering apparatus for producing waterborne polyurethane emulsion according to claim 1, wherein, The upper portion of the connecting pipe (402) is fixed to the bottom inner wall of the primary filter cartridge (1), and the lower portion of the connecting pipe (402) is screwed to the water inlet end inner wall of the electromagnetic three-way valve (401), and one end of each of the two conveying pipes (403) is screwed to the water outlet end inner wall of the electromagnetic three-way valve (401).

5. The filtering apparatus for producing waterborne polyurethane emulsion according to claim 1, wherein, The support ring (502) top outer wall is provided with a plurality of fixing holes, and a plurality of clamping rods (504) are respectively inserted into the fixing holes.

6. The filtering apparatus for producing waterborne polyurethane emulsion according to claim 1, wherein, The secondary filter cylinder (501) is provided below with a liquid discharge pipe (6), and the two ends of the top of the liquid discharge pipe (6) are fixedly arranged on the inner walls of the bottoms of the two secondary filter cylinders (501).

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