Diluting device for polyurethane adhesive preparation

Abstract

The utility model discloses a dilution device for polyurethane adhesive preparation belongs to adhesive production equipment technical field, and its technical scheme main points include dilution bucket, the bottom of dilution bucket is hinged with four support feet, the inside of dilution bucket is annular and is provided with a plurality of heating rod, the inside rotation of dilution bucket is provided with the pivot, the top both sides of dilution bucket are respectively fixed and are communicated with raw material feeding pipe and diluent feeding pipe, the inside of dilution bucket is provided with scrape wall mechanism, the surface of pivot is hinged with cutting stirring mechanism, the scrape wall mechanism includes first upper scraper, second upper scraper, first lower scraper and second lower scraper, solved the existing device dilution when adhesive in the stirring dilution process is easy to lump because of local concentration is too high to the influence dilution's quality, the wall material cleaning is difficult after dilution, is easy to lead to raw material waste and secondary pollution problem.

Description

Technical Field

[0001] This utility model relates to the technical field of adhesive production equipment, and in particular to a dilution device for preparing polyurethane adhesives. Background Technology

[0002] In the preparation of polyurethane adhesives, high-viscosity adhesive concentrates are not conducive to subsequent operations and applications. Dilution devices have emerged to address this issue. They can precisely control the amount of diluent added and the mixing process, so that the adhesive reaches the appropriate viscosity, enhancing its flowability and coatability, improving production efficiency and product quality, and meeting the needs of different application scenarios.

[0003] In existing equipment, the adhesive is prone to clumping due to excessively high local concentrations during the dilution process, which affects the quality of dilution. The residual wall material after dilution is difficult to clean, which can easily lead to waste of raw materials and secondary pollution.

[0004] To address this, a dilution apparatus for preparing polyurethane adhesives is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a dilution device for preparing polyurethane adhesives, which can solve the problems of adhesives easily clumping due to excessively high local concentrations during the dilution process in existing devices, thus affecting the quality of dilution, and making it difficult to clean residual wall material after dilution, which can easily lead to waste of raw materials and secondary pollution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dilution device for preparing polyurethane adhesive, comprising a dilution tank, four supporting feet bolted to the bottom of the dilution tank, a plurality of heating rods arranged in a ring inside the dilution tank, a rotating shaft rotatably arranged inside the dilution tank, a raw material feeding pipe and a diluent feeding pipe fixedly connected to the top two sides of the dilution tank respectively, a wall scraping mechanism arranged inside the dilution tank, and a cutting and stirring mechanism bolted to the surface of the rotating shaft;

[0007] The wall scraping mechanism includes a first upper scraper, a second upper scraper, a first lower scraper, and a second lower scraper. The front sides of the first upper scraper and the first lower scraper are respectively bolted to the top of the rear side of the rotating shaft and the bottom of the left side, and both the first upper scraper and the first lower scraper slide in contact with the inner wall of the dilution tank. The rear sides of the second upper scraper and the second lower scraper are respectively bolted to the top of the front side of the rotating shaft and the bottom, and both the second upper scraper and the second lower scraper slide in contact with the inner wall of the dilution tank.

[0008] Preferably, the cutting and stirring mechanism includes two first stirring frames, which are respectively bolted to the top of both sides of the rotating shaft.

[0009] Preferably, a second stirring frame is bolted to the bottom of both sides of the rotating shaft, and a number of stirring crossbars are bolted to the inside of the first stirring frame. Cutting saw blades are bolted to the front side of the number of stirring crossbars inside the right first stirring frame and the rear side of the number of stirring crossbars inside the left first stirring frame.

[0010] Preferably, a number of stirring rods are bolted inside the second stirring frame, and cutting blades are bolted to the front side of the stirring rods on the right and the rear side of the stirring rods on the left.

[0011] Preferably, a first vertical scraper is bolted between the rear sides of the first upper scraper and the first lower scraper, and the rear side of the first vertical scraper slides in contact with the inner wall of the dilution tank.

[0012] Preferably, a second vertical scraper is bolted between the front sides of the second upper scraper and the second lower scraper, and the front side of the second vertical scraper slides in contact with the inner wall of the dilution tank. Several cutting blocks are bolted to both sides of the first vertical scraper and the second vertical scraper.

[0013] Preferably, several auxiliary cutting blades are bolted to the top and bottom of the cutting serrated blade, several outward flow guide plates are bolted to the inside of the first stirring frame, and two angled extrusion flow guide cutting plates are provided on one side of several cutting straight blades inside the second stirring frame. The angled extrusion flow guide cutting plates in pairs are used in conjunction with the corresponding cutting straight blades. Several upward flow guide plates are bolted to the inside of the second stirring frame, and several downward flow guide plates are bolted to the left side of the left first stirring frame and the right side of the right first stirring frame.

[0014] Preferably, a stirring motor is bolted to the top of the dilution tank, the output shaft of the stirring motor extends into the inside of the dilution tank and is bolted to the rotating shaft, and a discharge pipe is fixedly connected to the bottom of the dilution tank, with an on / off valve installed inside the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting up a wall scraping mechanism, this application can scrape off the raw materials adhering to the inner wall of the dilution tank, thereby eliminating the dead corners of stirring and reducing secondary pollution. At the same time, the scraped raw materials are cut and refined, thereby increasing the uniformity of mixing.

[0017] 2. This application, by setting up a cutting and stirring mechanism, can cut the agglomerated raw materials during stirring, so as to initially disperse them. After dispersion, the flow can be accelerated by two obliquely squeezed and guided cutting plates. Combined with the cutting straight blades, it can realize the convection and shearing functions, so as to force the adhesive raw materials and diluents to mix, prevent local excessive concentration, and achieve more uniform mixing with the guide plates in various directions. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the dilution device for preparing polyurethane adhesives according to this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the dilution tank of this utility model;

[0020] Figure 3 This is a schematic diagram showing the connection between the cutting and stirring mechanism and the rotating shaft of this utility model;

[0021] Figure 4 This is a schematic diagram showing the connection between the downstream guide plate and the first stirring frame of this utility model;

[0022] Figure 5 This is a schematic diagram showing the connection between the scraping mechanism and the dilution tank of this utility model.

[0023] In the diagram, 1. Dilution tank; 2. Support foot; 3. Heating rod; 4. Rotating shaft; 5. Raw material feeding pipe; 6. Diluent feeding pipe; 7. Wall scraping mechanism; 71. First upper scraper; 72. Second upper scraper; 73. First lower scraper; 74. Second lower scraper; 8. Cutting and stirring mechanism; 81. First stirring frame; 82. Second stirring frame; 83. Stirring crossbar; 84. Cutting serrated blade; 85. Stirring vertical bar; 86. Cutting straight blade; 9. First vertical scraper; 10. Second vertical scraper; 11. Cutting block; 12. Auxiliary cutting blade; 13. Outward flow guide plate; 14. Angled extrusion guide cutting plate; 15. Upward flow guide plate; 16. Downward flow guide plate; 17. Stirring motor; 18. Discharge pipe; 19. On / off valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A dilution device for preparing polyurethane adhesive includes a dilution tank 1, four support feet 2 are bolted to the bottom of the dilution tank 1, a number of heating rods 3 are arranged in a ring inside the dilution tank 1, a rotating shaft 4 is rotatably arranged inside the dilution tank 1, a raw material feeding pipe 5 and a diluent feeding pipe 6 are respectively fixedly connected to the top two sides of the dilution tank 1, a wall scraping mechanism 7 is arranged inside the dilution tank 1, and a cutting and stirring mechanism 8 is bolted to the surface of the rotating shaft 4.

[0027] The wall scraping mechanism 7 includes a first upper scraper 71, a second upper scraper 72, a first lower scraper 73, and a second lower scraper 74. The front sides of the first upper scraper 71 and the first lower scraper 73 are respectively bolted to the top of the rear side and the bottom of the left side of the rotating shaft 4, and the first upper scraper 71 and the first lower scraper 73 are in sliding contact with the inner wall of the dilution tank 1. The rear sides of the second upper scraper 72 and the second lower scraper 74 are respectively bolted to the top of the front side and the bottom of the rotating shaft 4, and the second upper scraper 72 and the second lower scraper 74 are in sliding contact with the inner wall of the dilution tank 1.

[0028] In this embodiment: the dilution tank 1 is stably supported by four support feet 2 to ensure the overall stability of the device. Then, polyurethane adhesive raw material is added into the dilution tank 1 through the raw material inlet pipe 5, and the corresponding diluent is added through the diluent inlet pipe 6. Several heating rods 3 arranged in a ring inside the dilution tank 1 are turned on to heat the raw material and diluent in the tank to meet the temperature conditions that may be required during the dilution process. Subsequently, the stirring-related components are activated, causing the rotating shaft 4 to start rotating. The cutting and stirring mechanism 8 bolted to the surface of the rotating shaft 4 rotates accordingly to stir the raw material and diluent. At the same time, the wall scraping mechanism 7 also rotates with the rotating shaft 4. The first upper scraper 71, the second upper scraper 72, the first lower scraper 73 and the second lower scraper 74 bolted to the rotating shaft 4 slide in contact with the inner wall of the dilution tank 1 to scrape off the raw material adhering to the inner wall, avoiding the formation of stirring dead corners and reducing secondary pollution. The scraped raw material will also participate in the mixing in the subsequent stirring to increase the mixing uniformity.

[0029] Specifically, such as Figure 3 As shown, the cutting and stirring mechanism 8 includes two first stirring frames 81, which are respectively bolted to the top of both sides of the rotating shaft 4.

[0030] Specifically, such as Figure 3 As shown, a second stirring frame 82 is bolted to the bottom of both sides of the rotating shaft 4. Several stirring crossbars 83 are bolted to the inside of the first stirring frame 81. Cutting saw blades 84 are bolted to the front side of several stirring crossbars 83 inside the right first stirring frame 81 and the rear side of several stirring crossbars 83 on the left side.

[0031] Specifically, such as Figure 3 As shown, several stirring rods 85 are bolted inside the second stirring frame 82. Cutting blades 86 are bolted to the front side of several stirring rods 85 on the right side and the rear side of several stirring rods 85 on the left side.

[0032] In this embodiment: when the rotating shaft 4 starts to rotate, the two first stirring frames 81 bolted to the top of both sides of the rotating shaft 4 rotate accordingly. The several stirring crossbars 83 bolted inside the first stirring frame 81 also rotate, stirring the raw materials and diluent. The cutting serrated blades 84 bolted to the front side of the several stirring crossbars 83 inside the right first stirring frame 81 and the rear side of the several stirring crossbars 83 inside the left first stirring frame 81 will cut the raw materials that may clump during the rotation, so as to initially disperse them. At the same time, the second stirring frames 82 bolted to the bottom of both sides of the rotating shaft 4 also rotate. The several stirring vertical rods 85 bolted inside the second stirring frame 82 further stir the materials. The cutting straight blades 86 bolted to the front side of the several stirring vertical rods 85 on the right side and the rear side of the several stirring vertical rods 85 on the left side, together with the cutting serrated blades 84, perform more detailed cutting and dispersion of the clumped raw materials, so that the raw materials and diluent are better mixed and avoid excessively high local concentrations.

[0033] Specifically, such as Figure 5 As shown, a first vertical scraper 9 is bolted between the rear sides of the first upper scraper 71 and the first lower scraper 73, and the rear side of the first vertical scraper 9 slides in contact with the inner wall of the dilution tank 1.

[0034] Specifically, such as Figure 5 As shown, a second vertical scraper 10 is bolted between the front sides of the second upper scraper 72 and the second lower scraper 74, and the front side of the second vertical scraper 10 slides in contact with the inner wall of the dilution tank 1. Several cutting blocks 11 are bolted to both sides of the first vertical scraper 9 and the second vertical scraper 10.

[0035] In this embodiment: the first vertical scraper 9, which is bolted between the rear sides of the first upper scraper 71 and the first lower scraper 73, and the second vertical scraper 10, which is bolted between the front sides of the second upper scraper 72 and the second lower scraper 74, slide in contact with the inner wall of the dilution tank 1, and continuously scrape off the raw materials adhering to the inner wall. Several cutting blocks 11 bolted to both sides of the first vertical scraper 9 and the second vertical scraper 10 will cut and refine the scraped raw materials. These refined raw materials will participate in the mixing process again, which further increases the uniformity of the mixing of raw materials and diluent, while avoiding the occurrence of dead corners in the mixing and reducing secondary pollution.

[0036] Specifically, such as Figure 4As shown, several auxiliary cutting blades 12 are bolted to the top and bottom of the cutting serrated blade 84. Several outward flow guide plates 13 are bolted to the inside of the first stirring frame 81. Two angled extrusion guide cutting plates 14 are provided on one side of several cutting straight blades 86 inside the second stirring frame 82. The angled extrusion guide cutting plates 14, which are in pairs, are used in conjunction with the corresponding cutting straight blades 86. Several upward flow guide plates 15 are bolted to the inside of the second stirring frame 82. Several downward flow guide plates 16 are bolted to the left side of the left first stirring frame 81 and the right side of the right first stirring frame 81.

[0037] In this embodiment: several auxiliary cutting blades 12 bolted to the top and bottom of the cutting serrated blade 84 assist the cutting serrated blade 84 in cutting the agglomerated raw material more precisely. Several outward flow guide plates 13 bolted inside the first stirring frame 81 guide the material to flow outward, increasing the flow range of the material. Inside the second stirring frame 82, pairs of angled extrusion guide cutting plates 14 work in conjunction with corresponding straight cutting blades 86. When the material passes through, the angled extrusion guide cutting plates 14 accelerate the flow, and together with the straight cutting blades 86, they achieve convection and shearing functions, forcibly mixing the adhesive raw material and the diluent. Several upward flow guide plates 15 bolted inside the second stirring frame 82 guide the material to flow upward, and several downward flow guide plates 16 bolted to the left side of the left first stirring frame 81 and the right side of the right first stirring frame 81 guide the material to flow downward. Through the guide plates in various directions, the material is mixed more evenly, preventing the local concentration from being too high.

[0038] Specifically, such as Figure 1 As shown, a stirring motor 17 is bolted to the top of the dilution tank 1. The output shaft of the stirring motor 17 extends into the interior of the dilution tank 1 and is bolted to the rotating shaft 4. A discharge pipe 18 is fixedly connected to the bottom of the dilution tank 1, and an on / off valve 19 is installed inside the discharge pipe 18.

[0039] In this embodiment: the output shaft of the stirring motor 17 extends into the dilution tank 1 and drives the rotating shaft 4 to rotate, thereby enabling the cutting and stirring mechanism 8 and the wall scraping mechanism 7 to start working. After the raw materials and diluent are fully mixed and diluted, the on / off valve 19 set inside the discharge pipe 18 is opened, and the diluted polyurethane adhesive flows out through the discharge pipe 18. The stirring motor 17 provides power for the entire stirring process, while the discharge pipe 18 and the on / off valve 19 facilitate the control of the discharge of the diluted adhesive, ensuring that the entire dilution process proceeds smoothly.

[0040] Working principle: First, the dilution tank 1 is stably supported by four support feet 2 to ensure the overall stability of the device. Then, polyurethane adhesive raw material is added through the raw material inlet pipe 5, and the corresponding diluent is added through the diluent inlet pipe 6. Several heating rods 3 arranged in a ring inside the dilution tank 1 are turned on to provide a suitable temperature for the dilution process. Then, the stirring motor 17 is started, and its output shaft extends into the inside of the dilution tank 1 to drive the rotating shaft 4 to rotate, thereby starting the cutting and stirring mechanism 8 and the wall scraping mechanism 7 to work. When the rotating shaft 4 rotates, the first stirring frame 81 and several stirring crossbars 83 inside it are activated. The rotating agitator initially cuts and disperses potentially agglomerated raw materials by rotating and stirring the material. Simultaneously, the second stirring frames 82 at the bottom of both sides of the rotating shaft 4 and several internal stirring vertical rods 85 further agitate the material. The straight cutting blades 86, bolted to the stirring vertical rods 85, work in conjunction with the serrated cutting blades 84 to perform more precise cutting and dispersion of agglomerated raw materials, preventing excessively high local concentrations. Auxiliary cutting blades 12 at the top and bottom of the serrated cutting blades 84 assist in more precise cutting. The wall scraping mechanism 7 rotates with the rotating shaft 4, and the scraping mechanism 7, bolted to the rotating shaft 4... The first upper scraper 71, the second upper scraper 72, the first lower scraper 73, and the second lower scraper 74 slide in contact with the inner wall of the dilution tank 1 to scrape away the adhering raw materials. The first vertical scraper 9 and the second vertical scraper 10 also continuously scrape away the raw materials from the inner wall. The cutting blocks 11 on them cut and refine the scraped raw materials, allowing the raw materials to participate in the mixing again, increasing the uniformity of mixing and reducing secondary pollution. During the mixing process, the outward flow guide plate 13 in the first mixing frame 81 guides the material to flow outward, and the two groups of angled extrusion guide cutting plates 14 and cutting straight blades in the second mixing frame 82... The 86 components work together to achieve forced mixing of materials through convection and shearing. The upward flow guide plate 15 in the second mixing frame 82 guides the material to flow upward, while the downward flow guide plate 16 on one side of the two first mixing frames 81 guides the material to flow downward, achieving uniform mixing of materials in all directions. After the raw materials and diluent are fully mixed and diluted, the on / off valve 19 in the discharge pipe 18 is opened, and the diluted polyurethane adhesive flows out through the discharge pipe 18. Throughout the process, the stirring motor 17 provides power, and the discharge pipe 18 and the on / off valve 19 control the discharge, ensuring that the dilution process proceeds smoothly.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dilution apparatus for preparing polyurethane adhesive, comprising a dilution tank (1), characterized in that: The bottom of the dilution tank (1) is bolted with four support feet (2). The inside of the dilution tank (1) is arranged in a ring with several heating rods (3). The inside of the dilution tank (1) is rotatably arranged with a rotating shaft (4). The top two sides of the dilution tank (1) are respectively fixedly connected to a raw material feeding pipe (5) and a diluent feeding pipe (6). The inside of the dilution tank (1) is provided with a wall scraping mechanism (7). The surface of the rotating shaft (4) is bolted with a cutting and stirring mechanism (8). The scraping mechanism (7) includes a first upper scraper (71), a second upper scraper (72), a first lower scraper (73), and a second lower scraper (74). The front sides of the first upper scraper (71) and the first lower scraper (73) are respectively bolted to the top of the rear side and the bottom of the left side of the rotating shaft (4), and the first upper scraper (71) and the first lower scraper (73) are both in sliding contact with the inner wall of the dilution tank (1). The rear sides of the second upper scraper (72) and the second lower scraper (74) are respectively bolted to the top of the front side and the bottom of the rotating shaft (4), and the second upper scraper (72) and the second lower scraper (74) are both in sliding contact with the inner wall of the dilution tank (1).

2. The dilution apparatus for preparing polyurethane adhesive according to claim 1, characterized in that: The cutting and stirring mechanism (8) includes two first stirring frames (81), which are respectively bolted to the top of both sides of the rotating shaft (4).

3. The dilution apparatus for preparing polyurethane adhesive according to claim 2, characterized in that: The bottom of both sides of the rotating shaft (4) is bolted with a second stirring frame (82). The inside of the first stirring frame (81) is bolted with several stirring crossbars (83). Cutting saw blades (84) are bolted to the front side of several stirring crossbars (83) inside the right first stirring frame (81) and the rear side of several stirring crossbars (83) on the left side.

4. The dilution apparatus for preparing polyurethane adhesive according to claim 3, characterized in that: The second stirring frame (82) has several stirring rods (85) bolted inside. Cutting blades (86) are bolted to the front side of the stirring rods (85) on the right side and the rear side of the stirring rods (85) on the left side.

5. The dilution apparatus for preparing polyurethane adhesive according to claim 1, characterized in that: A first vertical scraper (9) is bolted between the rear sides of the first upper scraper (71) and the first lower scraper (73), and the rear side of the first vertical scraper (9) slides in contact with the inner wall of the dilution tank (1).

6. The dilution apparatus for preparing polyurethane adhesive according to claim 5, characterized in that: A second vertical scraper (10) is bolted between the front sides of the second upper scraper (72) and the second lower scraper (74), and the front side of the second vertical scraper (10) slides in contact with the inner wall of the dilution tank (1). Several cutting blocks (11) are bolted to both sides of the first vertical scraper (9) and the second vertical scraper (10).

7. The dilution apparatus for preparing polyurethane adhesive according to claim 4, characterized in that: The top and bottom of the cutting serrated blade (84) are each bolted with a number of auxiliary cutting blades (12). The first stirring frame (81) is bolted with a number of outward flow guide plates (13). The second stirring frame (82) has two angled extrusion guide cutting plates (14) on one side of each of the several cutting straight blades (86). The angled extrusion guide cutting plates (14) in pairs are used in conjunction with the corresponding cutting straight blades (86). The second stirring frame (82) is bolted with a number of upward flow guide plates (15). The left side of the left first stirring frame (81) and the right side of the right first stirring frame (81) are each bolted with a number of downward flow guide plates (16).

8. The dilution apparatus for preparing polyurethane adhesive according to claim 1, characterized in that: A stirring motor (17) is bolted to the top of the dilution tank (1). The output shaft of the stirring motor (17) extends into the interior of the dilution tank (1) and is bolted to the rotating shaft (4). A discharge pipe (18) is fixedly connected to the bottom of the dilution tank (1). An on / off valve (19) is installed inside the discharge pipe (18).

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