Polyester resin tabletting cooling device

Abstract

The utility model discloses a polyester resin tabletting cooling device, and belongs to the technical field of polyester resin cooling devices, the polyester resin tabletting cooling device comprises a cooling box, the cooling box is fixedly connected with a first limiting groove, the first limiting groove is in sliding connection with a sliding rod, the sliding rod is fixedly connected with a moving rod, the moving rod is in rotating connection with a first rotating shaft, and the first rotating shaft is in rotating connection with a second rotating shaft. The first rotating shaft is fixedly connected with a first steel belt, the moving rod is fixedly connected with a first air cylinder, the moving rod is fixedly provided with a first motor, the inner wall of the cooling box is fixedly connected with a fixed rod, the fixed rod is rotatably connected with a second rotating shaft, and the second rotating shaft is fixedly connected with a second steel belt. And a second motor is fixedly mounted on the side wall of the fixed rod. According to the utility model, rapid cooling can be realized, the cooling time is greatly shortened, the production efficiency is improved, thermal deformation of polyester resin tablets in the cooling process can be effectively reduced through rapid cooling, and the shape of a product is more regular.

Description

Technical Field

[0001] The utility model relates to the technical field of a polyester resin cooling device, in particular to a polyester resin tablet cooling device. Background Art

[0002] Powder coatings are generally composed of polyester resin, curing agent, filler, pigment and additives. Polyester resin is the main film-forming material of the coating, accounting for about 60%. Thermosetting powder coatings are widely used on metal substrates due to their excellent protective and decorative properties, as well as excellent adhesion and surface properties. Polyester resin is mainly made of polyols and polyacids as raw materials, which are esterified and condensed in a certain ratio under the action of catalysts and additives.

[0003] In the production process of polyester resin, the cooling device is an important link. The traditional cooling method is usually to place the finished material on a steel belt and spray cooling water on the back of the steel belt for cooling. This method takes a long time to cool from 200°C to room temperature. During the cooling process, the polyester resin is easy to adhere to the surface of the steel belt, affecting the heat transfer efficiency of the steel belt. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes a polyester resin tablet cooling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A polyester resin tablet cooling device comprises a cooling box, wherein the inner wall of the cooling box is fixedly connected with four first limit grooves, the first limit grooves are slidably connected with two sliding rods, the end of the sliding rod away from the first limit groove is fixedly connected with a moving rod, the moving rod is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly connected with a first steel belt, the moving rod is fixedly connected with a first cylinder, the moving rod is fixedly installed with a first motor, the inner wall of the cooling box is fixedly connected with four fixed rods, the fixed rod is rotatably connected with a second rotating shaft, the second rotating shaft is fixedly connected with a second steel belt, the side wall of the fixed rod is fixedly installed with a second motor, the inner wall of the cooling box is installed with two second cylinders, the telescopic end of the second cylinder is fixedly connected with a scraper, and the end of the scraper away from the second cylinder is slidably connected with the second limit groove.

[0007] Preferably, a first liquid nitrogen storage tank is fixedly mounted on the outer wall of the cooling box, and the first liquid nitrogen storage tank is connected to the cooling box through four ventilation ducts.

[0008] Preferably, an opening is provided at the top of the cooling box, the opening is provided with a feed port, the feed port is rotatably connected to two third rotating shafts, the third rotating shaft sleeve is provided with a metal cylinder, and the third rotating shaft is fixedly connected to a third motor.

[0009] Preferably, a second liquid nitrogen storage tank is fixedly mounted on the outer wall of the cooling box, and the second liquid nitrogen storage tank is connected to the cooling box through three ventilation ducts, and fans are installed in the ventilation ducts.

[0010] Preferably, a nitrogen recovery box is fixedly mounted on the outer wall of the cooling box, and the nitrogen recovery box is connected to the cooling box through a ventilation duct, and a negative pressure fan is installed in the ventilation duct.

[0011] Preferably, the bottom of the cooling box is provided with an opening, and the opening is provided with a discharge port.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can achieve rapid cooling by arranging the first liquid nitrogen storage tank, the second liquid nitrogen storage tank and the fan, greatly shorten the cooling time, and improve production efficiency. Rapid cooling can effectively reduce the thermal deformation of the polyester resin tablet during the cooling process, making the product shape more regular.

[0014] 2. The utility model can flexibly change the cooling stroke of the material on the steel belt according to actual production needs and process conditions by setting the first cylinder, the moving rod, the sliding rod and the first limit groove to achieve the best cooling effect. When equipment failure or other abnormalities suddenly occur during the cooling process, the first steel belt can be quickly removed to avoid material damage and production interruption.

[0015] 3. The utility model reduces the waste of liquid nitrogen by arranging a nitrogen recovery box and a negative pressure fan. The recycling and reuse can ensure the continuous and stable supply of liquid nitrogen to a certain extent, and reduce the impact of liquid nitrogen supply problems on production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a right side structural schematic diagram of the polyester resin tablet cooling device proposed by the utility model;

[0017] Figure 2 This is a left-side structural schematic diagram of the polyester resin tablet cooling device proposed by the utility model;

[0018] Figure 3 It is a schematic diagram of a top view and cross-section structure of a moving steel belt of a polyester resin tablet cooling device proposed by the utility model;

[0019] Figure 4 It is a right side cross-sectional structural schematic diagram of the moving steel belt of the polyester resin tablet cooling device proposed by the utility model;

[0020] Figure 5 This is a schematic cross-sectional structural diagram of a fan of a polyester resin tablet cooling device proposed by the utility model;

[0021] Figure 6 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0022] Figure 7 for Figure 3 A schematic diagram of the enlarged structure at B;

[0023] Figure 8 for Figure 4 Enlarged structural diagram at C.

[0024] In the figure: 1 cooling box, 2 first liquid nitrogen storage box, 3 nitrogen recovery box, 4 discharge port, 5 second liquid nitrogen storage box, 6 negative pressure fan, 7 fan, 8 first limiting groove, 9 sliding rod, 10 moving rod, 11 first rotating shaft, 12 first steel belt, 13 first cylinder, 14 first motor, 15 fixed rod, 16 second rotating shaft, 17 second motor, 18 second steel belt, 19 feeding port, 20 third rotating shaft, 21 metal cylinder, 22 third motor, 23 second cylinder, 24 scraper, 25 second limiting groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-8 The polyester resin tablet cooling device comprises a cooling box 1, the inner wall of the cooling box 1 is fixedly connected with four first limiting grooves 8, the first limiting grooves 8 are slidably connected with two sliding rods 9, the sliding rods 9 are cylindrical in shape, and several more sliding rods 9 can be added for greater firmness, and one end of the sliding rod 9 away from the first limiting groove 8 is fixedly connected with a moving rod 10, and the moving rod 10 is composed of an I-shaped rod, five connecting rods and four rings;

[0027] The moving rod 10 is rotatably connected to a first rotating shaft 11, and the first rotating shaft 11 passes through the ring of the moving rod 10. There are two first rotating shafts 11, and the first rotating shaft 11 is fixedly connected to a first steel belt 12. The moving rod 10 is fixedly connected to a first cylinder 13, and one end of the first cylinder 13 away from the moving rod 10 is fixedly connected to the inner wall of the cooling box 1;

[0028] The moving rod 10 is fixedly installed with a first motor 14, the output end of the first motor 14 is fixedly connected to the first rotating shaft 11, and the inner wall of the cooling box 1 is fixedly connected with four fixed rods 15, the fixed rod 15 is composed of a connecting rod and a ring, the fixed rod 15 is rotatably connected with a second rotating shaft 16, and the second rotating shaft 16 passes through the ring of the fixed rod 15, and the second rotating shaft 16 is fixedly connected with a second steel belt 18;

[0029] A second motor 17 is fixedly mounted on the side wall of the fixed rod 15, and the output end of the second motor 17 is fixedly connected to the second rotating shaft 16. Two second cylinders 23 are mounted on the bottom inner wall of the cooling box 1, and a scraper 24 is fixedly connected to the telescopic end of the second cylinder 23 through a connecting rod. The end of the scraper 24 away from the second cylinder 23 is slidably connected to the second limiting groove 25 by the connecting rod, and there are two scrapers 24 and two second limiting grooves 25;

[0030] A first liquid nitrogen storage tank 2 is fixedly mounted on the outer wall of the cooling box 1. The first liquid nitrogen storage tank 2 is connected to the cooling box 1 through four upper and lower ventilation ducts. A rectangular opening is provided on the top of the cooling box 1. A feed port 19 is provided on the rectangular opening. The feed port 19 is composed of a rectangle and a trapezoid, and the feed port 19 has openings at the top and the bottom. The side wall at the lower end of the feed port 19 is rotatably connected to two third rotating shafts 20. The third rotating shaft 20 is sleeved with a metal cylinder 21, and the metal cylinder 21 is fixedly connected to the third rotating shaft 20. The third rotating shaft 20 is fixedly connected to a third motor 22, and the third motor 22 is fixedly connected to the outer wall of the feed port 19;

[0031] A second liquid nitrogen storage tank 5 is fixedly installed on the outer wall of the cooling box 1. The side wall of the second liquid nitrogen storage tank 5 is communicated with the cooling box 1 through three ventilation ducts. Fans 7 are installed in the ventilation ducts. There are three fans 7. A nitrogen recovery box 3 is fixedly installed on the outer wall of the cooling box 1. The nitrogen recovery box 3 is communicated with the cooling box 1 through ventilation ducts. A negative pressure fan 6 is installed in the ventilation duct. An opening is provided at the bottom of the cooling box 1. The opening is provided with a discharge port 4. The discharge port 4 is composed of a rectangle and a trapezoid.

[0032] The detailed working process of the utility model is as follows:

[0033] First, start the fan 7 and the negative pressure fan 6, and then transport the nitrogen from the first liquid nitrogen storage tank 5 and the second liquid nitrogen storage tank 2 to the cooling box 1, and the nitrogen recovery box 3 is used to cool the nitrogen replaced in the cooling box 1, and then pour the material into the feed port 19, follow the gravity to the metal cylinder 21, and then start the third motor 22 to drive the metal cylinder 21 to rotate toward the middle to squeeze the material, and then the material follows the gravity to reach between the first steel belt 12 and the second steel belt 18, start the first cylinder 13 to drive the moving rod 10 to move toward the second steel belt 18, and move with the first steel belt 12 to the second steel belt 18 until it reaches the required position.

[0034] Then, the first motor 14 and the second motor 17 are started to drive the first rotating shaft 11 and the second rotating shaft 17 to rotate. As the first steel belt 12 and the second steel belt 18 rotate, the material moves downward and is squeezed, and then goes out through the discharge port 4.

[0035] When it is necessary to clean the impurities on the first steel belt 12 and the second steel belt 18, stop pouring the material, move the first steel belt 12 to the top of the scraper 24, and then start the second cylinder 23 to drive the scraper 24 to move upward until it contacts the first steel belt 12 and the second steel belt 18. The scraper 24 will remove the impurities on the first steel belt 12 and the second steel belt 18.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polyester resin tablet cooling device, comprising a cooling box (1), characterized in that: The inner wall of the cooling box (1) is fixedly connected with four first limiting grooves (8), the first limiting grooves (8) are slidably connected with two sliding rods (9), one end of the sliding rod (9) away from the first limiting groove (8) is fixedly connected with a moving rod (10), the moving rod (10) is rotatably connected with a first rotating shaft (11), the first rotating shaft (11) is fixedly connected with a first steel belt (12), the moving rod (10) is fixedly connected with a first cylinder (13), the moving rod (10) is fixedly installed with a first motor (14), and the cooling box (1) is fixedly connected with a first cylinder (13). Four fixed rods (15) are fixedly connected to the inner wall of the box (1), the fixed rods (15) are rotatably connected to a second rotating shaft (16), the second rotating shaft (16) is fixedly connected to a second steel belt (18), a second motor (17) is fixedly installed on the side wall of the fixed rods (15), two second cylinders (23) are installed on the inner wall of the cooling box (1), a scraper (24) is fixedly connected to the telescopic end of the second cylinder (23), and a second limiting groove (25) is slidably connected to the end of the scraper (24) away from the second cylinder (23).

2. The polyester resin tablet cooling device according to claim 1, characterized in that: A first liquid nitrogen storage box (2) is fixedly mounted on the outer wall of the cooling box (1); the first liquid nitrogen storage box (2) is in communication with the cooling box (1) via four ventilation ducts.

3. The polyester resin tablet cooling device according to claim 1, characterized in that: The top of the cooling box (1) is provided with an opening, the opening is provided with a feed port (19), the feed port (19) is rotatably connected to two third rotating shafts (20), the third rotating shafts (20) are sleeved with a metal cylinder (21), and the third rotating shafts (20) are fixedly connected to a third motor (22).

4. The polyester resin tablet cooling device according to claim 1, characterized in that: A second liquid nitrogen storage tank (5) is fixedly mounted on the outer wall of the cooling box (1); the second liquid nitrogen storage tank (5) is connected to the cooling box (1) via three ventilation ducts, and fans (7) are mounted in the ventilation ducts.

5. The polyester resin tablet cooling device according to claim 1, characterized in that: A nitrogen recovery box (3) is fixedly mounted on the outer wall of the cooling box (1); the nitrogen recovery box (3) is connected to the cooling box (1) via a ventilation duct; a negative pressure fan (6) is installed in the ventilation duct.

6. The polyester resin tablet cooling device according to claim 1, characterized in that: The bottom of the cooling box (1) is provided with an opening, and the opening is provided with a discharge port (4).

Images