CN217016594U

CN217016594U - Waterborne polyurethane emulsion reation kettle

Info

Publication number: CN217016594U
Application number: CN202220483108.0U
Authority: CN
Inventors: 王旭; 叶琦; 吴婧; 周云峰; 周瑞亮; 朱丽娜; 冯伟业
Original assignee: Zhejiang Hexin New Material Co ltd
Current assignee: Zhejiang Hexin New Material Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-22
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to the technical field of waterborne polyurethane production, and particularly discloses a waterborne polyurethane emulsion reaction kettle, wherein the top of a kettle body is detachably connected with a kettle cover, a motor is arranged on the kettle cover, the output end of the motor is connected with a stirring shaft, the stirring shaft is arranged in the kettle body and is connected with a stirring paddle, a shaft sleeve is fixedly sleeved on the stirring shaft, a connecting arm is hinged on the outer wall of the shaft sleeve, the rotating axis of the connecting arm is parallel to the stirring shaft, one end of the connecting arm, far away from the shaft sleeve, is connected with a scraping strip through a connecting rod, a first abutting block and a second abutting block are formed on the outer wall of the shaft sleeve, a first contact surface and a second contact surface for abutting against the connecting arm are respectively formed on the first abutting block and the second abutting block, and the connecting arm is arranged between the first contact surface and the second contact surface, the residual materials on the inner wall of the kettle body can be effectively removed while the durability of the scraping strip is ensured.

Description

Waterborne polyurethane emulsion reation kettle

Technical Field

The utility model relates to the technical field of waterborne polyurethane production, in particular to a waterborne polyurethane emulsion reaction kettle.

Background

The water-based polyurethane resin is a uniform emulsion formed by dispersing polyurethane in water, has the advantages of non-inflammability, small smell, no environmental pollution, energy conservation, convenient operation and processing and the like, and is widely used as an adhesive and a coating.

When processing waterborne polyurethane, a stirring kettle is needed to stir raw materials to disperse the polyurethane in water, because the viscosity of waterborne polyurethane emulsion is high, after the materials are generally placed, part of excess materials are adhered to the inner wall of a kettle body, and the excess materials adhered to the inner wall of the kettle body are troublesome to clean, in order to avoid the adhesion of excess materials to the inner wall of the kettle body, a scraper is connected to a stirring shaft, the scraper is in contact with the inner wall of the kettle body and synchronously rotates along with the stirring shaft, and the scraper cleans the inner wall of the kettle body in real time in the rotating process of the stirring shaft, but the structure has the great defect that the scraper can rotate at a very high speed due to the very high rotating speed of the stirring shaft, and the scraper can generate high-speed friction between the scraper and the inner wall of the kettle body due to the contact between the scraper and the inner wall of the kettle body, which can cause damage to the inner wall of the kettle body, and the service life of the scraper is very short, meanwhile, as the inner wall of the kettle body is scraped during stirring, waste generated by abrasion in the scraping process can also remain in the waterborne polyurethane emulsion, and the quality of the waterborne polyurethane emulsion is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems mentioned in the background art, the utility model aims to provide a water-based polyurethane emulsion reaction kettle.

In order to achieve the above object, the technical scheme of the utility model is as follows:

an aqueous polyurethane emulsion reaction kettle comprises a kettle body, wherein the top of the kettle body is detachably connected with a kettle cover, a motor is installed on the kettle cover, the output end of the motor is connected with a stirring shaft, the stirring shaft penetrates through the kettle cover and is coaxially arranged in the kettle body, the stirring shaft in the kettle body is connected with a stirring paddle, a shaft sleeve is fixedly sleeved on the stirring shaft in the kettle body, a connecting arm is hinged on the outer wall of the shaft sleeve, the rotating axis of the connecting arm is parallel to the stirring shaft, one end, far away from the shaft sleeve, of the connecting arm is fixedly connected with a connecting rod, a scraping strip is connected on the connecting rod and is parallel to the stirring shaft, a first abutting block and a second abutting block are formed on the outer wall of the shaft sleeve, a first contact surface and a second contact surface for abutting against the connecting arm are respectively formed on the first abutting block and the second abutting block, and the connecting arm is arranged between the first contact surface and the second contact surface, when the connecting arm contacts with the first contact surface, the scraping strip contacts with the inner wall of the kettle body, and when the connecting arm leaves the first contact surface, the scraping strip leaves the inner wall of the kettle body.

Further, be equipped with the feed inlet on the kettle cover, the bottom of the cauldron body is equipped with the discharge gate, be connected with feed valve and bleeder valve on feed inlet and the discharge gate respectively.

Furthermore, the shaft sleeve is detachably connected to the stirring shaft through a screw.

Furthermore, the connecting rod is parallel to the stirring shaft, a clamping groove is vertically formed in the outer end of the connecting rod, a matching portion corresponding to the shape of the clamping groove is formed in the scraping strip, and the scraping strip is inserted into the clamping groove through the matching portion.

The utility model has the beneficial effects that: according to the utility model, the shaft sleeve is provided with the first abutting block and the second abutting block, the first contact surface and the second contact surface are respectively formed on the first abutting block and the second abutting block, when the stirring shaft spins in different rotation directions, the connecting arm can always keep contact with the first contact surface or the second contact surface, the connecting arm can always contact with the second contact surface in the stirring process, and the scraping strip is separated from the inner wall of the kettle body for a certain distance and cannot generate friction with the inner wall of the kettle body; make the (mixing) shaft low-speed rotation once more and make the linking arm keep in the short time with the contact surface contact after having put the material, scrape the strip this moment and keep with the contact of cauldron internal wall, can scrape the remaining clout of cauldron internal wall, compare in scrape the strip all the time with the structure of the contact of cauldron internal wall, this structure can guarantee that cauldron internal wall does not receive the harm, can guarantee the durability of scraping the strip again, and can also effectively clear up the clout of cauldron internal wall, and the structure is ingenious, guarantee the stirring quality of waterborne polyurethane emulsion.

Drawings

FIG. 1 is a schematic sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of the embodiment of the utility model when the scraping strip is contacted with the inner wall of the kettle body;

FIG. 3 is a schematic view of the connecting arm abutting the second contact surface according to the embodiment of the present invention;

fig. 4 is a schematic view of a connecting structure of the bushing, the connecting arm and the wiper strip according to an embodiment of the present invention.

Description of the figure numbering: 1. the reactor comprises a reactor body, 11, a discharge hole, 12, a discharge valve, 2, a reactor cover, 21, a feed inlet, 22, a feed valve, 3, an installation frame, 4, a motor, 41, a shaft coupler, 42, a stirring shaft, 43, a sealing bearing, 44, a stirring paddle, 5, a shaft sleeve, 51, a first abutting block, 511, a first contact surface, 52, a second abutting block, 521, a second contact surface, 6, a connecting arm, 61, a connecting rod, 62, a clamping groove, 7, a scraping strip, 71 and a matching part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein are intended to be within the scope of the present invention.

As shown in fig. 1-4, an aqueous polyurethane emulsion reaction kettle comprises a cylindrical kettle body 1, the top of the kettle body 1 is detachably connected with a kettle cover 2 through a plurality of groups of screws and nuts, the top of the kettle cover 2 is provided with a motor 4 through an inverted V-shaped mounting rack 3, an output shaft of the motor 4 is connected with a stirring shaft 42 through a coupling 41, the stirring shaft 42 penetrates through the central point of the kettle cover 2 and is coaxially arranged in the kettle body 1, the stirring shaft 42 is rotatably connected with the kettle cover 2 through a sealed bearing 43, the lower part of the stirring shaft 42 is connected with a frame type stirring paddle 44, the upper part of the stirring shaft 42 in the kettle body 1 is fixedly sleeved with a shaft sleeve 5, the outer wall of the shaft sleeve 5 is hinged with a connecting arm 6, the connecting arm 6 is horizontally arranged, the rotating axis of the connecting arm 6 is parallel to the shaft sleeve 42, one end of the connecting arm 6, far away from the shaft sleeve 5, is fixedly connected with a connecting rod 61, the connecting rod 61 is connected with a scraping strip 7, the scraping strips 7 are parallel to the stirring shaft 42, a first abutting block 51 and a second abutting block 52 are formed on the outer wall of the shaft sleeve 5, a first contact surface 511 and a second contact surface 521 for abutting against the connecting arm 6 are formed on the first abutting block 51 and the second abutting block 52 respectively, the first contact surface 511 and the second contact surface 521 are perpendicular to each other, the connecting arm 6 is arranged between the first contact surface 511 and the second contact surface 521, when the connecting arm 6 is in contact with the first contact surface 511, the extension line of the connecting arm 6 is intersected with the axis of the stirring shaft 42, the scraping strips 7 are in contact with the inner wall of the kettle body 1, and when the connecting arm 6 is separated from the first contact surface 511, the scraping strips 7 are separated from the inner wall of the kettle body 1. In this embodiment, be equipped with feed inlet 21 on the kettle cover 2, the bottom of the cauldron body 1 is equipped with discharge gate 11, is connected with feed valve 22 and bleeder valve 12 on feed inlet 21 and the discharge gate 11 respectively, is convenient for throw the material and the ejection of compact.

In this embodiment, the shaft sleeve 5 is detachably connected to the stirring shaft 42 through screws, so that the shaft sleeve 5 can be conveniently disassembled.

In this embodiment, connecting rod 61 is on a parallel with (mixing) shaft 42, and the outer end of connecting rod 61 is vertical to be provided with T type draw-in groove 62, and the top of draw-in groove 62 is opening form and bottom and seals, scrapes strip 7 and adopts the rubber material, scrapes strip 7 and goes up the shaping and have the corresponding T type cooperation portion 71 with the draw-in groove 62 shape, scrapes strip 7 and pegs graft in draw-in groove 62 through cooperation portion 71, and structural design is reasonable, and the strip 7 is scraped in the dismouting of being convenient for.

In practical use, raw materials are added into the kettle body 1 through the feed inlet 21, then the motor 4 is started to enable the stirring shaft 42 to rotate at a low speed in a clockwise direction, the connecting arm 6 can abut against the second contact surface 521 under the action of inertia, a certain gap is formed between the scraping strip 7 and the inner wall of the kettle body 1, then the power of the motor 4 is increased to enable the stirring shaft 42 to rotate at a high speed in the clockwise direction, and the connecting arm 6 is kept in contact with the second contact surface 521, so that friction cannot be generated on the inner wall of the kettle body 1; after the reaction is completed and the material is put, the motor 4 is started again, so that the stirring shaft 42 rotates at a low speed in the counterclockwise direction, the connecting arm 6 can abut against the first contact surface 511 under the action of inertia, the extension line of the connecting arm 6 is intersected with the axis of the stirring shaft 42 at the moment, the scraping strip 7 is also contacted with the inner wall of the kettle body 1, and the scraping strip 7 scrapes the inner wall of the kettle body 1 along with the counterclockwise rotation of the stirring shaft 42.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the utility model, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides an aqueous polyurethane emulsion reation kettle, includes the cauldron body (1), the detachable kettle cover (2) that is connected with in top of the cauldron body (1), install motor (4) on kettle cover (2), the output of motor (4) is connected with (mixing) shaft (42), (mixing) shaft (42) link up kettle cover (2) and coaxial the setting in the cauldron body (1), in the cauldron body (1) be connected with stirring rake (44) on (mixing) shaft (42), its characterized in that, in the cauldron body (1) in fixed cover is equipped with axle sleeve (5) on (mixing) shaft (42), articulated on the outer wall of axle sleeve (5) have linking arm (6), the axis of rotation of linking arm (6) is on a parallel with (mixing) shaft (42), the one end rigid coupling that axle sleeve (5) was kept away from to linking arm (6) has connecting rod (61), be connected with on connecting rod (61) and scrape strip (7), scrape strip (7) and be parallel with (mixing) shaft (42), the outer wall shaping of axle sleeve (5) has first piece (51) and the second of supporting to block (52), first support block (51) and the second support and support the last shaping respectively of block (52) and supply first contact surface (511) and second contact surface (521) of linking arm (6) butt, linking arm (6) are located between first contact surface (511) and second contact surface (521), work as when linking arm (6) contact with first contact surface (511), scrape strip (7) and the contact of the cauldron body (1) inner wall, work as linking arm (6) leave first contact surface (511), scrape strip (7) and leave the cauldron body (1) inner wall.

2. The waterborne polyurethane emulsion reaction kettle according to claim 1, wherein a feed inlet (21) is formed in the kettle cover (2), a discharge outlet (11) is formed in the bottom of the kettle body (1), and a feed valve (22) and a discharge valve (12) are respectively connected to the feed inlet (21) and the discharge outlet (11).

3. The waterborne polyurethane emulsion reaction kettle of claim 1, wherein the shaft sleeve (5) is detachably connected to the stirring shaft (42) through a screw.

4. The waterborne polyurethane emulsion reaction kettle according to claim 1, wherein the connecting rod (61) is parallel to the stirring shaft (42), a clamping groove (62) is vertically arranged at the outer end of the connecting rod (61), a matching portion (71) corresponding to the clamping groove (62) in shape is formed on the scraping strip (7), and the scraping strip (7) is inserted into the clamping groove (62) through the matching portion (71).