Polyether polyol synthesizer

Abstract

The utility model relates to a polyether polyol synthesizer, which comprises a kettle body and a kettle cover with a built-in driving mechanism, a temperature control device and a support frame are arranged outside the kettle body, a hollow cavity is arranged inside the kettle cover, a driving wheel, a driven wheel and an annular gear are arranged in the kettle cover, the driven wheel is arranged at the central position, and the driving wheel is arranged between the driven wheel and the annular gear. The driving wheel drives the driven wheel and the annular gear to rotate, so that the stirring shaft and the U-shaped stirring paddle are synchronously driven to reversely rotate, the stirring speed is increased, the stirring efficiency is improved, and the production efficiency is improved; the bottom of the U-shaped stirring paddle is in contact with the kettle body, the side face of the U-shaped stirring paddle is further provided with a plurality of scrapers, the scrapers are in contact with the kettle body, materials near the kettle wall and the kettle bottom are comprehensively stirred, stirring is more sufficient, and residues on the kettle wall and the kettle bottom are avoided during discharging.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyether polyol synthesis devices, and in particular relates to a polyether polyol synthesis device. Background Art

[0002] Polyether polyols (polyethers for short) are produced by addition polymerization of initiators (compounds containing active hydrogen groups) with ethylene oxide (EO), propylene oxide (PO), butylene oxide (BO), etc. in the presence of catalysts. The largest polyether production is produced by using glycerol (glycerol) as an initiator and epoxide (generally PO and EO are used together). By changing the addition method of PO and EO (mixed or separate), addition ratio, addition order and other conditions, various general-purpose polyether polyols are produced.

[0003] Polyether polyol is a chemical commonly used in the manufacture of general-purpose polyurethane foam plastics, adhesives and elastomers. Special polyether polyols are also used as defoamers, surfactants, etc. At room temperature, it is a colorless to brown viscous liquid. If it is not mixed sufficiently, stratification will occur due to the viscosity of the liquid, so it will take a longer time to stir the materials evenly, and the production efficiency needs to be improved. Summary of the invention

[0004] In order to solve the above problems, the utility model discloses a polyether polyol synthesis device.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] The utility model provides a polyether polyol synthesis device, comprising a kettle body and a kettle cover with a built-in driving mechanism, a temperature control device and a supporting frame are arranged outside the kettle body, a feeding port is arranged on the upper part of the side of the kettle body, a discharging port is arranged at the bottom of the kettle body, the kettle body is bolted to the kettle cover, a hollow cavity is arranged inside the kettle cover, a driving wheel, a driven wheel, and a ring gear inscribed and meshed with the driving wheel are arranged in the hollow cavity, the driving wheel is connected to a motor, the driven wheel is meshed and connected with the driving wheel, the bottom of the rotating shaft of the driven wheel is connected to a stirring shaft, the stirring shaft passes through the bottom of the kettle cover and is placed in the kettle body, the bottom end of the stirring shaft is placed above the discharging port through a limiting frame, a first stirring paddle is arranged on the stirring shaft, second stirring paddles are arranged on both sides of the first stirring paddle, the inner ends of the second stirring paddles are connected through limiting rings, the limiting rings are sleeved outside the stirring shaft, the radial outer end of the second stirring paddle is placed on a U-shaped stirring paddle, and the open end of the U-shaped stirring paddle is fixedly connected to the bottom end of the ring gear.

[0007] Furthermore, an annular hole is provided at the bottom of the kettle cover, and the opening end of the U-shaped stirring paddle is placed in the annular hole, so that the U-shaped stirring paddle rotates with the annular gear.

[0008] Furthermore, the bottom of the U-shaped stirring paddle is arranged in contact with the kettle body, and a plurality of scrapers are arranged on the side of the U-shaped stirring paddle, and the scrapers are arranged in contact with the kettle body to fully stir the materials near the kettle wall and the bottom of the kettle, so that the stirring is more sufficient and residues on the kettle wall and the bottom of the kettle are avoided when discharging the materials.

[0009] Furthermore, a medium inlet is provided at the bottom of the temperature control device, and a medium outlet is provided at the upper side of the temperature control device. The medium inlet and the medium outlet are connected through a temperature controller to facilitate regulating the temperature in the kettle.

[0010] Furthermore, a connecting ring is provided at the bottom of the U-shaped stirring paddle, and the connecting ring is placed outside the limiting frame so as not to block the rotation of the U-shaped stirring paddle.

[0011] Furthermore, the driven wheel is placed at the center of the kettle cover.

[0012] The beneficial effects of the utility model are:

[0013] The utility model discloses a polyether polyol synthesis device. A driving wheel, a driven wheel and a ring gear are arranged in a kettle cover. The driven wheel is arranged at a central position, and the driving wheel is arranged between the driven wheel and the ring gear. The driving wheel drives the driven wheel and the ring gear to rotate, thereby synchronously driving a stirring shaft (a first stirring paddle) and a U-shaped stirring paddle (a second stirring paddle) to rotate in opposite directions, thereby accelerating the stirring rate, improving the stirring efficiency, and improving the production efficiency. The bottom of the U-shaped stirring paddle is arranged in contact with the kettle body, and a plurality of scrapers are further arranged on the side of the U-shaped stirring paddle, and the scrapers are arranged in contact with the kettle body to fully stir the materials near the kettle wall and the kettle bottom, so that the stirring is more sufficient and the residue on the kettle wall and the kettle bottom is avoided when discharging the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a polyether polyol synthesis device;

[0015] List of Figure Symbols:

[0016] 1. Kettle body; 2. Kettle cover; 3. Temperature control device; 4. Motor; 5. Driving wheel; 6. Driven wheel; 7. Ring gear; 8. Stirring shaft; 9. Feed inlet; 10. U-shaped stirring paddle; 11. Limiting ring; 12. First stirring paddle; 13. Scraper; 14. Medium outlet; 15. Medium inlet; 16. Discharge port; 17. Limiting frame; 18. Support frame. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0018] A polyether polyol synthesis device comprises a kettle body 1, a kettle cover 2 with a built-in driving mechanism, a temperature control device 3 and a support frame 18 are arranged outside the kettle body 1, a feed port 9 is arranged on the upper side of the kettle body 1, a discharge port 16 is arranged on the bottom of the kettle body 1, the kettle body 1 is bolted to the kettle cover 2, a hollow cavity is arranged inside the kettle cover 2, a driving wheel 5, a driven wheel 6, and a ring gear 7 inscribed and meshed with the driving wheel 5 are arranged in the hollow cavity, the driven wheel 6 is placed at the center of the kettle cover 2, the driving wheel 5 is connected to the motor 4, and the driven wheel 6 is meshed and connected with the driving wheel 5 The bottom of the rotating shaft of the driven wheel 6 is connected to the stirring shaft 8, the stirring shaft 8 passes through the bottom of the kettle cover 2 and is placed in the kettle body 1, the bottom end of the stirring shaft 8 is placed above the discharge port 16 through a limiting frame 17, a first stirring paddle 12 is arranged on the stirring shaft 8, and second stirring paddles are arranged on both sides of the first stirring paddle 12, the inner end of the second stirring paddle is connected through a limiting ring 11, the limiting ring 11 is sleeved on the outside of the stirring shaft 8, the radial outer end of the second stirring paddle is placed on the U-shaped stirring paddle 10, and the open end of the U-shaped stirring paddle 1210 is fixedly connected to the bottom end of the ring gear 7.

[0019] An annular hole is provided at the bottom of the kettle cover 2, and the open end of the U-shaped stirring paddle 10 is placed in the annular hole, so that the U-shaped stirring paddle 10 rotates with the ring gear 7. The bottom of the U-shaped stirring paddle 10 is arranged in contact with the kettle body 1, and a plurality of scrapers 13 are also arranged on the side of the U-shaped stirring paddle 10, and the scrapers 13 are arranged in contact with the kettle body 1 to fully stir the materials near the kettle wall and the bottom of the kettle. A connecting ring is provided at the bottom of the U-shaped stirring paddle 10, and the connecting ring is placed outside the limiting frame 17.

[0020] A medium inlet 15 is provided at the bottom of the temperature control device 3 , and a medium outlet 14 is provided at the upper side of the temperature control device 3 . The medium inlet 15 and the medium outlet 14 are connected via a temperature controller.

[0021] Working principle: The material is added into the kettle body 1 through the feed port 9, and the motor 4 and the temperature control device 3 are turned on. The motor 4 drives the driving wheel 5 to rotate, and the driving wheel 5 drives the driven wheel 6 and the ring gear 7 to rotate, thereby synchronously driving the stirring shaft 8 and the U-shaped stirring paddle 10 to rotate. The first stirring paddle 12 rotates in the opposite direction to the U-shaped stirring paddle 10, which greatly improves the stirring efficiency. When discharging, the scraper 13 and the U-shaped stirring paddle 10 scrape the materials on the kettle wall and the bottom of the kettle and discharge them from the discharge port 16.

[0022] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A polyether polyol synthesis device, characterized in that: The utility model comprises a kettle body and a kettle cover with a built-in driving mechanism. A temperature control device and a supporting frame are arranged outside the kettle body. A feeding port is arranged on the upper part of the side of the kettle body, a discharging port is arranged at the bottom of the kettle body, the kettle body is connected with the kettle cover by bolts, a hollow cavity is arranged inside the kettle cover, a driving wheel, a driven wheel and a ring gear inscribed and meshing with the driving wheel are arranged in the hollow cavity, the driving wheel is connected with the motor, the driven wheel is meshed and connected with the driving wheel, the bottom of the rotating shaft of the driven wheel is connected with the stirring shaft, the stirring shaft passes through the bottom of the kettle cover and is placed in the kettle body, the bottom end of the stirring shaft is placed above the discharging port through a limiting frame, a first stirring paddle is arranged on the stirring shaft, second stirring paddles are arranged on both sides of the first stirring paddle, the inner end of the second stirring paddle is connected through a limiting ring, the limiting ring is sleeved outside the stirring shaft, the radial outer end of the second stirring paddle is placed on the U-shaped stirring paddle, and the open end of the U-shaped stirring paddle is fixedly connected to the bottom end of the ring gear.

2. A polyether polyol synthesis device according to claim 1, characterized in that: An annular hole is arranged at the bottom of the kettle cover, and the opening end of the U-shaped stirring paddle is placed in the annular hole.

3. A polyether polyol synthesis device according to claim 1, characterized in that: The bottom of the U-shaped stirring paddle is arranged in contact with the kettle body, and a plurality of scrapers are arranged on the side of the U-shaped stirring paddle, and the scrapers are arranged in contact with the kettle body.

4. A polyether polyol synthesis device according to claim 1, characterized in that: A medium inlet is arranged at the bottom of the temperature control device, a medium outlet is arranged at the upper side of the temperature control device, and the medium inlet and the medium outlet are connected through a temperature controller.

5. A polyether polyol synthesis device according to claim 3, characterized in that: A connecting ring is arranged at the bottom of the U-shaped stirring paddle, and the connecting ring is arranged outside the limiting frame.

6. A polyether polyol synthesis device according to claim 1, characterized in that: The driven wheel is placed at the center of the kettle cover.

Images