Polyester polymer polyol preparation reaction kettle

Abstract

The utility model discloses a polyester polymer polyol preparation reaction kettle, which relates to the technical field of polyol preparation and comprises a tank body, two groups of support legs are fixedly connected to the outer surface of the tank body, a feed hopper is arranged at the upper end of the tank body, a stirring mechanism is arranged in the tank body, and a limiting rod I is fixedly connected to the bottom surface of the tank body. A cleaning mechanism is arranged below the tank body, a second limiting rod is fixedly connected to the bottom face of the tank body, a limiting piece is fixedly connected to the end, away from the tank body, of the second limiting rod, a discharging hopper is arranged at the lower end of the tank body, and a scraping plate is arranged in the tank body. By arranging a second limiting rod and a cleaning mechanism, the position of the cleaning mechanism can be limited, then the cleaning mechanism can stably move for operation, and by arranging the cleaning mechanism, materials adhering to the inner wall of the discharging hopper can be scraped away; therefore, the situation that the inner wall of the discharging hopper is gradually narrowed due to the fact that the materials are accumulated on the inner wall of the discharging hopper can be avoided, and the discharging hopper can normally conduct discharging operation.

Description

Technical Field

[0001] The utility model relates to the technical field of polyol preparation, in particular to a polyester polymer polyol preparation reaction kettle. Background Art

[0002] Polymer polyol is a stable dispersion system in which independent polymer particles that do not touch each other are dispersed in polyether polyol or polyester polyol. Polymer polyol is one of the important raw materials for polyurethane products, with a wide range of uses and large amounts. The existing polyester polymer polyol is prepared in a reactor.

[0003] A polyester polymer polyol preparation reactor disclosed in the patent with announcement number CN213493671U. The polyester polymer polyol preparation reactor comprises a tank body, the upper end of the tank body is provided with a feed port, the lower end of the tank body is provided with a discharge port, the feed port and the discharge port are both provided with valves, the upper end of the tank body is also provided with a motor, the output shaft of the motor is connected with a rotating rod, the rotating rod is fixedly provided with uniformly distributed stirring blades, the stirring blades are located inside the tank body, the top end of the inner wall of the tank body is rotatably provided with a first rotating ring, the lower end of the first rotating ring is connected with two mutually corresponding fixed rods through a bracket, and a vertical scraper is provided at one end of the fixed rod away from each other.

[0004] The above scheme can be used to clean the inner wall of the tank, so that the reaction can proceed normally. However, the above scheme has certain shortcomings in actual use. The rotation of the scraper makes it easy to clean the inner wall of the tank, so that the reaction can proceed normally. However, the above scheme discharges the mixed material after the reaction in the reactor through the discharge port, and does not have a structure or specific method for cleaning the inner wall of the discharge port. The mixed material has a certain viscosity, so when the mixed material is discharged through the discharge port, part of the mixed material will adhere to the inner wall of the discharge port. If the material adhered to the inner wall of the discharge port is not thoroughly cleaned, the material will be air-dried on the inner wall of the discharge port. In the long run, the material will gradually accumulate and cause the discharge port to gradually narrow, which will affect the normal discharge of the discharge port. To this end, we provide a polyester polymer polyol preparation reactor to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a reaction kettle for preparing polyester polymer polyols.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyester polymer polyol preparation reactor, comprising a tank body, the outer surface of the tank body is fixedly connected to two groups of supporting legs, the upper end of the tank body is provided with a feed hopper, the interior of the tank body is provided with a stirring mechanism, the bottom surface of the tank body is fixedly connected to a limiting rod 1, a cleaning mechanism is provided below the tank body, the bottom surface of the tank body is fixedly connected to a limiting rod 2, the end of the limiting rod 2 away from the tank body is fixedly connected to a limiting plate, the lower end of the tank body is provided with a discharge hopper, and the interior of the tank body is provided with a scraper.

[0007] Preferably, the stirring mechanism includes a motor 1, the outer surface of the motor 1 is fixedly connected to the upper surface of the tank body, the output end of the motor 1 is fixedly connected to a rotating shaft 1, and the end of the rotating shaft 1 away from the motor 1 is fixedly connected to the outer surface of the scraper, and the outer surface of the rotating shaft 1 is fixedly connected to a stirring blade 1.

[0008] Preferably, the outer surface of the rotating shaft 1 is fixedly connected with the gear 1, the outer surface of the gear 1 is transmission-connected with the gear 2, and the outer surface of the gear 2 rotates with the interior of the tank body.

[0009] Preferably, the outer surface of the second gear is fixedly connected to the second rotating shaft, and the outer surface of the second rotating shaft rotates with the interior of the tank body, and the outer surface of the second rotating shaft is fixedly connected to the second stirring blade.

[0010] Preferably, the cleaning mechanism comprises a movable plate, the interior of the movable plate slides with the outer surface of the second limiting rod, and the interior of the movable plate slides with the outer surface of the first limiting rod.

[0011] Preferably, a handle is fixedly connected to the bottom surface of the movable plate, a motor 2 is fixedly connected to the bottom surface of the movable plate, a rotating shaft 3 is fixedly connected to the output end of the motor 2, and an outer surface of the rotating shaft 3 rotates with the inside of the movable plate.

[0012] Preferably, a spiral blade is fixedly connected to the outer surface of the rotating shaft three, a scraper is fixedly connected to the end of the rotating shaft three away from the motor two, and the outer surface of the scraper rotates with the inner wall of the discharge hopper.

[0013] Beneficial effects:

[0014] Compared with the prior art, the polyester polymer polyol preparation reactor has the following beneficial effects:

[0015] 1. The utility model can limit the position of the cleaning mechanism by setting the limit rod 2 and the cleaning mechanism, so that the cleaning mechanism can move stably to operate. By setting the cleaning mechanism, the material adhering to the inner wall of the discharge hopper can be scraped off, so as to avoid the material accumulating on the inner wall of the discharge hopper and causing the inner wall to gradually narrow, so that the discharge hopper can perform the discharge operation normally.

[0016] 2. The utility model can drive the rotating shaft 1 to rotate clockwise by starting the motor 1, and then drive the gear 1 and the stirring blade 1 to rotate accordingly. At this time, the gear 1 will drive the gear 2 on both sides to rotate counterclockwise, and then drive the rotating shaft 2 and the stirring blade 2 to rotate accordingly. Through the cooperation between the rotating stirring blade 1 and the stirring blade 2, the reactants in the tank can be fully stirred, so that the reaction effect of the reactants is more sufficient and the preparation efficiency is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional front view structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0019] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0021] Figure 5 This is a schematic diagram of the stirring mechanism of the utility model;

[0022] Figure 6 It is a schematic diagram of the cleaning mechanism of the utility model.

[0023] In the figure: 1. tank body, 2. supporting legs, 3. feed hopper, 4. stirring mechanism, 401. motor 1, 402. rotating shaft 1, 403. gear 1, 404. stirring blade 1, 405. gear 2, 406. rotating shaft 2, 407. stirring blade 2, 5. limiting rod 1, 6. cleaning mechanism, 601. moving plate, 602. handle, 603. motor 2, 604. rotating shaft 3, 605. spiral blade, 606. scraper, 7. limiting rod 2, 8. limiting plate, 9. discharge hopper, 10. scraper. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] See also Figure 1 to Figure 6 A polyester polymer polyol preparation reactor comprises a tank body 1, and two groups of supporting legs 2 are fixedly connected to the outer surface of the tank body 1.

[0026] The two sets of support legs 2 are fixed to the outer surface of the tank body 1 by welding, which can achieve a stable support effect on the tank body 1. A feed hopper 3 is provided at the upper end of the tank body 1. The number of feed hoppers 3 can be designed according to actual needs, which can increase the speed of adding materials, thereby achieving overall operating efficiency.

[0027] The tank body 1 is provided with a stirring mechanism 4. The stirring mechanism 4 includes a motor 401, the outer surface of the motor 401 is fixedly connected to the upper surface of the tank body 1, the output end of the motor 401 is fixedly connected to a rotating shaft 402, and the end of the rotating shaft 402 away from the motor 401 is fixedly connected to the outer surface of the scraper 10.

[0028] The outer surface of the rotating shaft 1 402 is fixedly connected with a stirring blade 1 404, and the outer surface of the rotating shaft 2 406 is fixedly connected with a stirring blade 2 407. Both the stirring blade 1 404 and the stirring blade 2 407 can be designed with multiple groups, and the stirring blade 1 404 and the stirring blade 2 407 are poorly arranged, so that the overall area during stirring can be increased, thereby improving the stirring efficiency. The outer surface of the rotating shaft 1 402 is fixedly connected with a gear 1 403, and the outer surface of the gear 1 403 is transmission-connected with a gear 2 405, and the outer surface of the gear 2 405 rotates with the interior of the tank body 1. The outer surface of the gear 2 405 is fixedly connected with the rotating shaft 2 406, and the outer surface of the rotating shaft 2 406 rotates with the interior of the tank body 1.

[0029] By starting the motor 1 401, the shaft 1 402 can be driven to rotate clockwise, and then the gear 1 403 and the stirring blade 1 404 can be driven to rotate accordingly. At this time, the gear 1 403 will drive the gear 2 405 on both sides to rotate counterclockwise, and then the shaft 2 406 and the stirring blade 2 407 can be driven to rotate accordingly. Through the coordination between the rotating stirring blade 1 404 and the stirring blade 2 407, the reactants in the tank body 1 can be fully stirred, so that the reaction effect of the reactants in the tank body 1 is more sufficient, thereby accelerating the preparation efficiency.

[0030] The bottom surface of the tank body 1 is fixedly connected to the limiting rod 1 5, the bottom surface of the tank body 1 is fixedly connected to the limiting rod 2 7, and the limiting rod 2 7 is fixedly connected to the limiting piece 8 at one end away from the tank body 1. By providing the limiting piece 8, the limiting rod 2 7 and the cleaning mechanism 6, the movable plate 601 can be limited, and then the position of the cleaning mechanism 6 can be limited, thereby increasing the stability of the cleaning mechanism 6, so that the cleaning mechanism 6 can move stably to operate.

[0031] A cleaning mechanism 6 is provided below the tank body 1. The cleaning mechanism 6 comprises a moving plate 601, the interior of the moving plate 601 slides with the outer surface of the limiting rod 2 7, and the interior of the moving plate 601 slides with the outer surface of the limiting rod 1 5. A handle 602 is fixedly connected to the bottom surface of the moving plate 601, a motor 2 603 is fixedly connected to the bottom surface of the moving plate 601, a rotating shaft 3 604 is fixedly connected to the output end of the motor 2 603, and the outer surface of the rotating shaft 3 604 rotates with the interior of the moving plate 601. A spiral blade 605 is fixedly connected to the outer surface of the rotating shaft 3 604, and a scraper 606 is fixedly connected to the end of the rotating shaft 3 604 away from the motor 2 603, and the outer surface of the scraper 606 rotates with the inner wall of the discharge hopper 9.

[0032] The hand-held handle 602 rotates around the limit rod 2 7. When the scraper 606 rotates to the bottom of the discharge hopper 9, it stops. Then the handle 602 is pushed upward to drive the movable plate 601, the rotating shaft 3 604, the spiral blade 605 and the scraper 606 to move upward. At this time, the limit rod 1 5 will be inserted into the inside of the movable plate 601 to limit it. At this time, the scraper 606 moving upward can crush the residue on the inner wall of the discharge hopper 9. Then start the motor 2 603. At this time, the motor 2 603 can drive the rotating shaft 3 604, the spiral blade 605 and the scraper 606 to rotate. At this time, the scraper 606 will scrape off the air-dried residue on the inner wall of the discharge hopper 9. The scraped residue will be transmitted downward by the rotating spiral blade 605. A collection box can be placed in advance under the tank body 1, so that the scraped materials can be collected and processed uniformly.

[0033] A discharge hopper 9 is provided at the lower end of the tank body 1, and a scraper 10 is provided inside the tank body 1. The size of the scraper 10 needs to be adapted to the size of the inner wall of the tank body 1. When the scraper 10 moves, the residue on the inner wall of the tank body 1 can be scraped off, thereby cleaning the inner wall of the tank body 1.

[0034] Working principle: When the utility model is in use, the materials to be reacted are placed inside the tank body 1 through the feed hopper 3, and then the motor 1 401 is started to drive the shaft 1 402 to rotate clockwise, and then the gear 1 403 and the stirring blade 1 404 are driven to rotate accordingly. At this time, the gear 1 403 drives the gears 2 405 on both sides to rotate counterclockwise, and then drives the shaft 2 406 and the stirring blade 2 407 to rotate accordingly. Through the cooperation between the rotating stirring blade 1 404 and the stirring blade 2 407, the reactants in the tank body 1 can be reacted. The reaction of the reactants in the tank body 1 is fully stirred, so that the reaction effect of the reactants in the tank body 1 is more sufficient, thereby accelerating the preparation efficiency. At the same time, the rotating shaft 402 will drive the scraper 10 to rotate with it, so that the material mucus adhered to the inner wall of the tank body 1 can be scraped off, so that the inner wall of the tank body 1 can be cleaned, and the reaction between the reactants can be more sufficient. The material solution after the reaction is discharged through the discharge hopper 9. During the discharge, there will be mucus remaining on the inner wall of the discharge hopper 9, and if it is not rinsed clean with clean water, the mucus will gradually dry on the inner wall of the discharge hopper 9 over time. At this time, it is necessary to use a cleaning machine 6 is used to clean the residue on the inner wall of the discharge hopper 9. Specifically, the hand-held handle 602 is rotated with the limiting rod 2 7 as the center. When the scraper 606 rotates to the bottom of the discharge hopper 9, it stops. Then the handle 602 is pushed upward to drive the movable plate 601, the rotating shaft 3 604, the spiral blade 605 and the scraper 606 to move upward. At this time, the limiting rod 1 5 will be inserted into the inside of the movable plate 601 to limit it. At this time, the scraper 606 moving upward can crush the residue on the inner wall of the discharge hopper 9. Then the motor 2 603 is started. At this time, the motor 2 603 can drive the rotating shaft 3 604, The spiral blade 605 and the scraper 606 rotate, and the scraper 606 will scrape off the air-dried residue on the inner wall of the discharge hopper 9. The rotating spiral blade 605 will transmit the scraped residue downward. A collection box can be placed under the tank body 1 in advance, so that the scraped materials can be collected and processed uniformly. Finally, the handle 602 can be moved downward to move the rotating shaft three 604, the spiral blade 605 and the scraper 606 out of the inner side of the discharge hopper 9, and then the handle 602 can be rotated ninety degrees with the limit rod two 7 as the axis to avoid affecting the normal discharge of the discharge hopper 9.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polyester polymer polyol preparation reactor, comprising a tank (1), characterized in that: The outer surface of the tank body (1) is fixedly connected to two groups of supporting legs (2), the upper end of the tank body (1) is provided with a feeding hopper (3), the interior of the tank body (1) is provided with a stirring mechanism (4), the bottom surface of the tank body (1) is fixedly connected to a limiting rod (5), a cleaning mechanism (6) is provided below the tank body (1), the bottom surface of the tank body (1) is fixedly connected to a limiting rod (7), the end of the limiting rod (7) away from the tank body (1) is fixedly connected to a limiting plate (8), the lower end of the tank body (1) is provided with a discharging hopper (9), and the interior of the tank body (1) is provided with a scraper (10).

2. A polyester polymer polyol preparation reaction kettle according to claim 1, characterized in that: The stirring mechanism (4) comprises a motor (401), the outer surface of the motor (401) being fixedly connected to the upper surface of the tank body (1), the output end of the motor (401) being fixedly connected to a rotating shaft (402), and the end of the rotating shaft (402) away from the motor (401) being fixedly connected to the outer surface of the scraper (10), and the outer surface of the rotating shaft (402) being fixedly connected to a stirring blade (404).

3. A polyester polymer polyol preparation reaction kettle according to claim 2, characterized in that: The outer surface of the rotating shaft 1 (402) is fixedly connected to the gear 1 (403), the outer surface of the gear 1 (403) is transmission-connected to the gear 2 (405), and the outer surface of the gear 2 (405) rotates with the interior of the tank body (1).

4. A polyester polymer polyol preparation reaction kettle according to claim 3, characterized in that: The outer surface of the second gear (405) is fixedly connected to the second rotating shaft (406), and the outer surface of the second rotating shaft (406) rotates with the interior of the tank body (1), and the outer surface of the second rotating shaft (406) is fixedly connected to the second stirring blade (407).

5. A polyester polymer polyol preparation reaction kettle according to claim 1, characterized in that: The cleaning mechanism (6) comprises a movable plate (601), the interior of the movable plate (601) slides with the outer surface of the second limiting rod (7), and the interior of the movable plate (601) slides with the outer surface of the first limiting rod (5).

6. A polyester polymer polyol preparation reaction kettle according to claim 5, characterized in that: The bottom surface of the movable plate (601) is fixedly connected to a handle (602), the bottom surface of the movable plate (601) is fixedly connected to a second motor (603), the output end of the second motor (603) is fixedly connected to a third rotating shaft (604), and the outer surface of the third rotating shaft (604) rotates with the inside of the movable plate (601).

7. A polyester polymer polyol preparation reaction kettle according to claim 6, characterized in that: The outer surface of the rotating shaft three (604) is fixedly connected with a spiral blade (605), and the end of the rotating shaft three (604) away from the motor two (603) is fixedly connected with a scraper (606), and the outer surface of the scraper (606) rotates with the inner wall of the discharge hopper (9).

Images