A reaction kettle for polyester resin production

Abstract

The utility model discloses a reactor for polyester resin production, which relates to the technical field of reactors, and comprises: a reactor body, wherein the upper end and the lower end of the reactor body are provided with a feed pipe and a discharge pipe, a motor is fixedly connected to the upper part of the reactor body, a rotating shaft is fixedly connected to the output end of the motor, a stirring blade is fixedly connected to the outer wall of the rotating shaft, a cleaning component is provided at the lower end of the rotating shaft, an insulation shell is installed on the outer wall of the reactor body, a conduction tube is provided on the inner wall of the insulation shell, a heater and a refrigerator are fixedly connected to the outer wall of the insulation shell, and a feeding device is provided on one side of the reactor body. By providing the rotating shaft and the cleaning component, the residual adhesion on the inner wall of the reactor body can be cleaned to avoid affecting the secondary use of the reactor body; the feeding device is provided, and additives can be added to the reactor body in layers to improve the speed and uniformity of feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to a reaction kettle used for polyester resin production. Background Art

[0002] Polyester resin is a polymer compound formed by the condensation of diols or dibasic acids or polyols and polyacids. The synthesis of polyester resin requires a reactor. When the raw materials enter the reactor to react, they need to be heated so that the raw materials can fuse with each other and accelerate the reaction rate.

[0003] For example, the Chinese patent with application number "CN202320235293.6" is named: "A new type of low-energy reactor for producing polyester resin", including a reactor body with a bracket and a main material pipe on the top, the outer side of the reactor body is wrapped with a jacket, a main agitator is arranged in the reactor body, a plurality of heat-conducting grooves are arranged around the inner and outer side walls of the reactor body, a heat-conducting metal block is fixed through the inner and outer heat-conducting grooves, a finished liquid discharge pipe is arranged at the bottom of the reactor body, a driving device is fixedly arranged below the finished liquid discharge pipe through a thin connecting rod, the output shaft of the driving device is mechanically connected to a small agitator, the small agitator extends into the finished liquid discharge pipe, and a liquid discharge expansion tube is fixed on the finished liquid discharge pipe. The utility model has sufficient chemical reaction, high conversion rate, greatly reduced energy consumption in the whole reaction process, and achieved the purpose of energy saving.

[0004] After the device discharges the mixed polyester resin, adhesion will form on the inner wall of the reactor, which brings difficulties to the cleaning work. If it is not cleaned in time, it will affect the secondary use of the reactor. Secondly, the device adds auxiliary materials to the reactor through the drop pipe during the stirring process, but this adding method is relatively simple and cannot make the added raw materials evenly distributed inside the reactor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a reactor for polyester resin production. By providing a rotating shaft and a cleaning component, residual adhesions on the inner wall of the reactor body can be cleaned to avoid affecting the secondary use of the reactor body. A feeding device is provided to add additives to the reactor body in layers to improve the speed and uniformity of feeding.

[0006] The utility model also provides a reactor for polyester resin production, comprising: a reactor body, the upper and lower ends of the reactor body are provided with a feed pipe and a discharge pipe, a motor is fixedly connected to the top of the reactor body, a rotating shaft is fixedly connected to the output end of the motor, a stirring blade is fixedly connected to the outer wall of the rotating shaft, a cleaning component is provided at the lower end of the rotating shaft, an insulation shell is installed on the outer wall of the reactor body, a conduction tube is provided on the inner wall of the insulation shell, a heater and a refrigerator are fixedly connected to the outer wall of the insulation shell, and a feeding device is provided on one side of the reactor body. By providing a rotating shaft and a cleaning component, the residual adhesion on the inner wall of the reactor body can be cleaned to avoid affecting the secondary use of the reactor body; a feeding device is provided to add additives to the reactor body in layers to improve the speed and uniformity of feeding.

[0007] According to the reactor for polyester resin production, the cleaning assembly includes a connecting frame fixedly connected to the lower end of the rotating shaft, bottom wall scrapers are fixedly connected to both sides of the connecting frame, and side wall scrapers are fixedly connected to one side of the upper ends of the two bottom wall scrapers.

[0008] According to the reactor for polyester resin production, the feeding device includes a feeding hopper fixedly connected to the top of the reactor body, a pump body is fixedly connected to one side of the feeding hopper, a feed pipe is fixedly connected to the output end of the pump body, an addition pipe is fixedly connected to the outer side wall of the feed pipe, and a valve is provided on the outer side wall of the addition pipe.

[0009] According to the reactor for polyester resin production, the bottom scraper and the side scraper are both adapted to the inner wall of the reactor body, and the residual adhesion on the inner wall and the inner bottom wall of the reactor body is cleaned by the bottom scraper and the side scraper.

[0010] According to the reactor for polyester resin production, there are three adding pipes, and the ends of the three adding pipes away from the feeding pipe penetrate one side of the reactor body. The three adding pipes facilitate adding additives to the upper layer, middle layer and lower layer inside the reactor body, thereby ensuring the uniformity of the additives.

[0011] According to the reactor for polyester resin production, the upper end and the lower end of the insulation shell are provided with a water inlet and a water outlet, and the conductive pipe is spirally distributed on the inner wall of the insulation shell. The water inlet is convenient for injecting water into the insulation shell, and the water in the insulation shell is convenient for discharging water through the water outlet.

[0012] According to the reactor for polyester resin production, three support columns are fixedly connected to the bottom of the reactor body, and the three support columns are symmetrically arranged to improve the stability of the reactor body.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a top perspective view of a reaction kettle for polyester resin production according to the utility model;

[0016] Figure 2 This is a bottom perspective view of a reaction kettle for polyester resin production according to the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the cross section of a reaction kettle for polyester resin production according to the utility model;

[0018] Figure 4 The utility model is a stereoscopic diagram of a cleaning component of a reaction kettle used for polyester resin production.

[0019] Legend:

[0020] 1. Reactor body; 110. Feed pipe; 120. Discharge pipe; 2. Motor; 3. Rotating shaft; 4. Stirring blade; 5. Cleaning assembly; 6. Insulation shell; 7. Conducting pipe; 8. Heater; 9. Refrigerator; 10. Feeding device; 501. Connecting frame; 502. Bottom wall scraper; 503. Side wall scraper; 101. Feeding hopper; 102. Pump body; 103. Feeding pipe; 104. Adding pipe; 105. Valve; 601. Water inlet; 602. Water outlet; 100. Support column. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4The utility model embodiment is a reactor for polyester resin production, which comprises: a reactor body 1, three support columns 100 are fixedly connected to the bottom of the reactor body 1, and the three support columns 100 are symmetrically arranged, the upper end and the lower end of the reactor body 1 are provided with a feed pipe 110 and a discharge pipe 120, a motor 2 is fixedly connected to the top of the reactor body 1, a rotating shaft 3 is fixedly connected to the output end of the motor 2, a stirring blade 4 is fixedly connected to the outer wall of the rotating shaft 3, a cleaning component 5 is arranged at the lower end of the rotating shaft 3, an insulation shell 6 is installed on the outer wall of the reactor body 1, a water inlet 601 and a water outlet 602 are arranged at the upper end and the lower end of the insulation shell 6, a conduction pipe 7 is arranged on the inner wall of the insulation shell 6, and the conduction pipe 7 is spirally distributed on the inner wall of the insulation shell 6, a heater 8 and a refrigerator 9 are fixedly connected to the outer wall of the insulation shell 6, and a feeding device 10 is arranged on one side of the reactor body 1.

[0023] The cleaning assembly 5 includes a connecting frame 501 fixedly connected to the lower end of the rotating shaft 3, and bottom wall scrapers 502 are fixedly connected to both sides of the connecting frame 501. Side wall scrapers 503 are fixedly connected to one side of the upper ends of the two bottom wall scrapers 502. The bottom wall scraper 502 and the side wall scraper 503 are both adapted to the inner wall of the reactor body 1.

[0024] The feeding device 10 includes a feeding hopper 101 fixedly connected to the top of the reactor body 1, a pump body 102 fixedly connected to one side of the feeding hopper 101, a feed pipe 103 fixedly connected to the output end of the pump body 102, an addition pipe 104 fixedly connected to the outer wall of the feed pipe 103, three addition pipes 104, and one end of the three addition pipes 104 away from the feed pipe 103 penetrates one side of the reactor body 1, and a valve 105 is provided on the outer wall of the addition pipe 104. By providing the rotating shaft 3 and the cleaning component 5, the residual adhesion on the inner wall of the reactor body 1 can be cleaned to avoid affecting the secondary use of the reactor body 1; the feeding device 10 is provided, and additives can be added to the reactor body 1 in layers to improve the speed and uniformity of feeding.

[0025] Working principle: When used for the first time, raw materials are added to the interior of the reactor body 1 through the feed pipe 110, and then the motor 2 output shaft 3 is started to drive the stirring blade 4 to rotate to stir the raw materials to ensure the uniform reaction. During the stirring process, additives can be added to the feed hopper 101, and the additives are input into the feed pipe 103 through the pump body 102. Additives are added to the upper layer, middle layer and lower layer of the inner wall of the reactor body 1 through the three adding pipes 104 on one side of the feed pipe 103, thereby improving the speed and uniformity of adding materials. In addition, during the stirring During the process, water is injected into the insulation shell 6 through the water inlet 601, and the heater 8 or the refrigerator 9 output conduction pipe 7 is started to heat or cool the water, so that the temperature in the reactor body 1 is within a suitable range for the reaction. When the polyester resin after the reaction is completed is discharged through the discharge pipe 120, the motor 2 output shaft 3 can be started to drive the connecting frame 501 to rotate. The rotation of the connecting frame 501 drives the bottom wall scraper 502 and the side wall scraper 503 to rotate, thereby scraping off the adhesion on the inner wall of the reactor body 1 and keeping the inside of the reactor body 1 clean.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A reactor for polyester resin production, comprising: A reactor body (1), characterized in that an inlet pipe (110) and a discharge pipe (120) are provided at the upper and lower ends of the reactor body (1); a motor (2) is fixedly connected to the top of the reactor body (1); a rotating shaft (3) is fixedly connected to the output end of the motor (2); a stirring blade (4) is fixedly connected to the outer wall of the rotating shaft (3); a cleaning component (5) is provided at the lower end of the rotating shaft (3); an insulation shell (6) is installed on the outer wall of the reactor body (1); a conduction tube (7) is provided on the inner wall of the insulation shell (6); a heater (8) and a refrigerator (9) are fixedly connected to the outer wall of the insulation shell (6); and a feeding device (10) is provided on one side of the reactor body (1).

2. A reaction kettle for polyester resin production according to claim 1, characterized in that: The cleaning assembly (5) comprises a connecting frame (501) fixedly connected to the lower end of the rotating shaft (3), bottom wall scrapers (502) being fixedly connected to both sides of the connecting frame (501), and side wall scrapers (503) being fixedly connected to one side of the upper ends of the two bottom wall scrapers (502).

3. A reaction kettle for polyester resin production according to claim 1, characterized in that: The feeding device (10) comprises a feeding hopper (101) fixedly connected to the top of the reactor body (1); a pump body (102) is fixedly connected to one side of the feeding hopper (101); a feed pipe (103) is fixedly connected to the output end of the pump body (102); an addition pipe (104) is fixedly connected to the outer wall of the feed pipe (103); and a valve (105) is provided on the outer wall of the addition pipe (104).

4. A reaction kettle for polyester resin production according to claim 2, characterized in that: The bottom wall scraper (502) and the side wall scraper (503) are both adapted to fit the inner wall of the reactor body (1).

5. The reaction kettle for polyester resin production according to claim 3, characterized in that: There are three addition pipes (104), and one end of the three addition pipes (104) away from the material delivery pipe (103) passes through one side of the reactor body (1).

6. The reaction kettle for polyester resin production according to claim 1, characterized in that: A water inlet (601) and a water outlet (602) are provided at the upper end and the lower end of the heat-insulating shell (6), and the conduction pipe (7) is distributed in a spiral shape on the inner wall of the heat-insulating shell (6).

7. A reaction kettle for polyester resin production according to claim 1, characterized in that: Three support columns (100) are fixedly connected below the reactor body (1), and the three support columns (100) are symmetrically arranged.

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