Polyurethane foaming agent preparation mixing device

Abstract

The utility model discloses a mixing device for preparing a polyurethane foaming agent, and relates to the technical field of foaming agent production. The device comprises a mixing tank, a stirring assembly is arranged in the mixing tank, and a feeding assembly is further arranged on one side of the top of the mixing tank; a rotating pipe in the stirring assembly is rotationally connected to the center position in the mixing tank, the outer wall of the rotating pipe is sleeved with a plurality of sets of stirring blades at equal intervals from left to right, the front end of the mixing tank is fixedly connected with a heating box, resistance wires are fixedly connected to the upper portion and the lower portion in the heating box, and a heat exchange pipe penetrates through the center position in the heating box. Hot water is provided for the rotating pipe through a heating box and a heat exchange pipe in the stirring assembly, raw materials of a polyurethane foaming agent are preheated through the hot water in the rotating pipe, and the materials in the inner shell are weighed through a pressure sensor in the feeding assembly; the problems that raw materials are inconvenient to preheat and polyurethane foaming agent raw materials are inconvenient to quantitatively proportion in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of foaming agent production, in particular to a polyurethane foaming agent preparation and mixing device. Background Art

[0002] Polyurethane foaming agent is the product of the cross-combination of aerosol technology and polyurethane foam technology. Its full name is single-component polyurethane foam sealant, commonly known as foaming agent, foam glue, PU sealant. In the production and preparation process of polyurethane foaming agent, in order to facilitate the mixing of materials, a mixing device is often used;

[0003] The existing document with publication number CN215277053U discloses a continuous mixing device for a foaming agent for building materials, comprising a bracket, a first mixing box is fixedly mounted on the bracket, a second mixing box is fixedly mounted below the first mixing box, a feed port of the second mixing box is connected with a discharge port of the first mixing box, a feed pipe is fixedly mounted at the feed port of the first mixing box, a feed stirring paddle is installed in the feed pipe, a discharge pipe is fixedly mounted at the discharge port of the second mixing box, a discharge stirring paddle is installed in the discharge pipe; a first stirring paddle and a first driving mechanism for driving the first stirring paddle to rotate are mounted on the first mixing box, a second stirring paddle and a second driving mechanism for driving the second stirring paddle to rotate are mounted on the second mixing box, and the rotation direction of the first stirring paddle is opposite to that of the second stirring paddle;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. The continuous mixing device of the foaming agent mentioned above has a first mixing box and a second mixing box respectively connected to the inside thereof with a feed stirring paddle and a discharge stirring paddle, and the raw materials of the polyurethane foaming agent are mixed by the feed stirring paddle and the discharge stirring paddle, but lacks a structure for preheating the materials, so that it is not convenient to perform subsequent processing on the mixed materials;

[0006] 2. The continuous mixing device of the foaming agent mentioned above has a feed hopper fixedly connected to the feed end of the feed pipe, and the feed is fed into the first mixing box and the second mixing box through the feed hopper and the feed pipe. However, it is not convenient for quantitative feeding, which requires the staff to manually mix the raw materials. Utility Model Content

[0007] The utility model aims to provide a polyurethane foaming agent preparation mixing device, which provides hot water to a rotating tube through a heating box and a heat exchange tube in a stirring assembly, thereby preheating the raw material of the polyurethane foaming agent through the hot water in the rotating tube, and weighing the material in the inner shell through a pressure sensor in a feeding assembly, thereby solving the existing problems of being inconvenient to preheat the raw materials and being inconvenient to quantitatively proportion the polyurethane foaming agent raw materials.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a polyurethane foaming agent preparation mixing device, comprising a mixing tank, a stirring component is arranged inside the mixing tank, and a feeding component is also arranged on one side of the top of the mixing tank;

[0010] The rotating tube in the stirring assembly is rotatably connected to the inner center of the mixing tank, and multiple groups of stirring blades are sleeved on the outer wall of the rotating tube at equal intervals from left to right. The front end of the mixing tank is fixedly connected to a heating box, and the upper and lower parts of the heating box are fixedly connected to resistance wires. A heat exchange tube runs through the inner center of the heating box, and the two ends of the heat exchange tube are rotatably connected to the two ends of the rotating tube through a rotating joint.

[0011] The outer shell in the feeding assembly is fixedly connected to the feed port on one side of the top of the mixing tank, and pressure sensors are fixedly connected to the outer walls of the outer shell via fixed plates. The inner shell is movably connected to the inner shell on all sides, and a slider is welded to the outer wall of one side of the inner shell. The other end of the slider movably passes through the slide groove on the outer shell and is fixedly connected to the induction plate. The lower surface of the induction plate is abutted and connected to the top of the pressure sensor, and the bottom of the inner shell is rotatably connected to the bottom cover, and an electromagnet and a permanent magnet are fixedly connected to the outer walls of one side of the bottom of the inner shell and one side of the bottom cover, respectively.

[0012] Furthermore, one end of the rotating tube rotates and passes through one side outer wall of the mixing tank and is sleeved with a first gear, and the other end of the rotating tube is rotatably connected to the other side of the interior of the mixing tank through a fixed frame, and a motor is fixedly connected to the lower part of the outer wall of one side of the mixing tank through a mounting frame, and a second gear is sleeved on the output shaft of the motor, and the second gear is meshed and connected below the first gear.

[0013] Furthermore, a discharge port is provided on the outer wall on the other side of the mixing tank, the inner thread of the discharge port is connected to a tank cover, and a handle is welded on the outer wall on one side of the tank cover.

[0014] Furthermore, support frames are fixedly connected to both sides of the bottom of the mixing tank.

[0015] Furthermore, a through hole is opened on the outer wall of the fixing frame, a bearing is fixedly connected inside the through hole, and the other end of the rotating tube is rotatably sleeved inside the bearing.

[0016] Furthermore, fixing rods are welded around the rear end surface of the heating box, and the other ends of the fixing rods are welded around the front end surface of the mixing tank.

[0017] Furthermore, a plurality of groups of heat exchange fins are equally spaced from left to right on the outer wall of the heat exchange tube, and the heat exchange fins are all located inside the heating box.

[0018] Furthermore, both sides of the bottom cover are rotatably connected with connecting rods, and the other ends of the connecting rods are movably connected to the inside of the arc-shaped grooves on the front and rear end surfaces of the inner shell.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model provides a stirring assembly, and drives the stirring blade to rotate through a rotating tube, so that the stirring blade stirs and mixes the raw materials in the mixing tank, and provides hot water to the rotating tube through a heating box and a heat exchange tube, so that the rotating tube and the stirring blade are heated by the hot water, and the raw materials in the mixing tank are preheated by the rotating tube and the stirring blade, thereby facilitating the subsequent polyurethane foaming agent production process.

[0021] 2. The utility model sets a feeding component, weighs the weight of the material in the inner shell through a pressure sensor, and controls the switch of the electromagnet through the pressure sensor. When the weight in the inner shell drops to a certain level, the power supply of the electromagnet is turned on through the pressure sensor, so that the bottom cover rotates relative to the inner shell, and the material in the inner shell stops entering the mixing tank through the outer shell, thereby realizing quantitative feeding of the mixing tank, facilitating quantitative proportioning of the raw materials of the polyurethane foaming agent, and facilitating mixing thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a structural disassembly diagram of the mixing tank of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the stirring assembly of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the rotating tube of the utility model;

[0027] Figure 5 This is a structural disassembly diagram of the fixing frame of the utility model;

[0028] Figure 6 It is a partial cross-sectional view of the heating box of the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the heat exchange tube of the utility model;

[0030] Figure 8 It is a structural schematic diagram of the feeding assembly of the utility model;

[0031] Fig. 9 It is a structural schematic diagram of the inner shell of the utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Mixing tank; 11. Feed inlet; 12. Discharge outlet; 121. Tank cover; 122. Handle; 13. Support frame; 2. Stirring assembly; 21. Rotating tube; 211. First gear; 212. Mounting frame; 213. Motor; 214. Second gear; 215. Fixed frame; 216. Through hole; 217. Bearing; 22. Stirring blade; 23. Heating box; 231. Resistance wire; 232. Fixed rod; 24. Heat exchange tube; 241. Heat exchange plate; 3. Feeding assembly; 31. Outer shell; 311. Fixed plate; 32. Pressure sensor; 33. Inner shell; 331. Sliding block; 332. Induction plate; 333. Arc groove; 34. Bottom cover; 341. Connecting rod; 35. Electromagnet; 36. Permanent magnet. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the utility model is a polyurethane foaming agent preparation mixing device, comprising a mixing tank 1, a discharge port 12 is opened on the outer wall of the other side of the mixing tank 1, a tank cover 121 is connected to the inner thread of the discharge port 12, a handle 122 is welded on the outer wall of one side of the tank cover 121, support frames 13 are fixedly connected to both sides of the bottom of the mixing tank 1, and a stirring assembly 2 is arranged inside the mixing tank 1;

[0036] The rotating tube 21 in the stirring assembly 2 is rotatably connected to the inner center position of the mixing tank 1, one end of the rotating tube 21 rotates through the outer wall of one side of the mixing tank 1 and is sleeved with a first gear 211, the other end of the rotating tube 21 is rotatably connected to the other side of the mixing tank 1 through a fixing frame 215, a through hole 216 is opened on the outer wall of the fixing frame 215, a bearing 217 is fixedly connected inside the through hole 216, the other end of the rotating tube 21 is rotatably sleeved inside the bearing 217, a motor 213 is fixedly connected to the lower side of the outer wall of one side of the mixing tank 1 through a mounting frame 212, a second gear 214 is sleeved on the output shaft of the motor 213, and the second gear 214 is meshed and connected below the first gear 211;

[0037] A plurality of stirring blades 22 are sleeved on the outer wall of the rotating tube 21 at equal intervals from left to right, a heating box 23 is fixedly connected to the front end of the mixing tank 1, and fixing rods 232 are welded around the rear end surface of the heating box 23, and the other end of the fixing rod 232 is welded around the front end surface of the mixing tank 1, and resistance wires 231 are fixedly connected to the upper and lower parts of the heating box 23, and a heat exchange tube 24 is passed through the center of the interior of the heating box 23, and a plurality of heat exchange fins 241 are sleeved on the outer wall of the heat exchange tube 24 at equal intervals from left to right, and the heat exchange fins 241 are all located inside the heating box 23, and the two ends of the heat exchange tube 24 are respectively rotatably connected to the two ends of the rotating tube 21 through a rotating joint;

[0038] Based on the above arrangement, when in use, firstly, the raw material of the polyurethane foaming agent is poured into the mixing tank 1, and the motor 213 is started, the output shaft of the motor 213 drives the second gear 214 to rotate synchronously, and under the action of the meshing connection between the first gear 211 and the second gear 214, the first gear 211 drives the rotating tube 21 to rotate synchronously, so that the rotating tube 21 drives the stirring blade 22 to stir and mix the raw material of the polyurethane foaming agent in the mixing tank 1, and then the resistance wire 231 is started, and the heat exchange tube 24 is heated by the resistance wire 231, so that the hot water in the heat exchange tube 24 flows into the interior of the rotating tube 21, and the raw material in the mixing tank 1 is preheated by the hot water in the rotating tube 21.

[0039] See also Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, a feeding assembly 3 is also provided on one side of the top of the mixing tank 1;

[0040] The outer shell 31 in the feeding assembly 3 is fixedly connected to the feed port 11 on one side of the top of the mixing tank 1, and the pressure sensor 32 is fixedly connected to the outer walls of the outer shell 31 through the fixing plate 311. The inner shell 33 is movably connected to the inner shell 33 on all sides of the inner shell 31. A slider 331 is welded to the outer wall of one side of the inner shell 33, and the other end of the slider 331 movably passes through the slide groove on the outer shell 31 and is fixedly connected to the induction plate 332. The lower surface of the induction plate 332 is abutted against and connected to the top of the pressure sensor 32. The bottom of the inner shell 33 is rotatably connected to the bottom cover 34, and the two sides of the bottom cover 34 are rotatably connected to the connecting rod 341, and the other end of the connecting rod 341 is movably connected to the inside of the arc groove 333 on the front and rear end surfaces of the inner shell 33, and the electromagnet 35 and the permanent magnet 36 are fixedly connected to one side of the bottom of the inner shell 33 and one side of the outer wall of the bottom cover 34 respectively.

[0041] Based on the above arrangement, when in use, the raw materials of the polyurethane foaming agent are first placed in different inner shells 33 respectively. At this time, due to the change in the weight of the inner shell 33, the slider 331 drives the induction plate 332 to move. When loading is required, the power supply of the electromagnet 35 is turned off. At this time, the electromagnet 35 is separated from the permanent magnet 36, and the bottom cover 34 rotates relative to the inner shell 33, so that the material in the inner shell 33 enters the interior of the mixing tank 1. When the weight in the inner shell 33 drops to a certain level, the power supply of the electromagnet 35 is reopened through the pressure sensor 32, so that the electromagnet 35 regains its magnetism, and under the action of the electromagnet 35, the bottom cover 34 is re-attached to the bottom of the inner shell 33, thereby realizing quantitative loading of the mixing tank 1.

[0042] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A polyurethane foaming agent preparation and mixing device, comprising a mixing tank (1), characterized in that: The mixing tank (1) is provided with a stirring assembly (2) inside, and a feeding assembly (3) is also provided on one side of the top of the mixing tank (1); The rotating tube (21) in the stirring assembly (2) is rotatably connected to the inner center position of the mixing tank (1); a plurality of groups of stirring blades (22) are sleeved on the outer wall of the rotating tube (21) at equal intervals from left to right; a heating box (23) is fixedly connected to the front end of the mixing tank (1); resistance wires (231) are fixedly connected to the upper and lower parts of the interior of the heating box (23); a heat exchange tube (24) passes through the inner center position of the heating box (23); and two ends of the heat exchange tube (24) are rotatably connected to the two ends of the rotating tube (21) via rotating joints; The outer shell (31) in the feeding assembly (3) is fixedly connected to the feed port (11) on one side of the top of the mixing tank (1); the outer walls of the outer shell (31) are fixedly connected to the pressure sensor (32) via the fixing plate (311); the inner shell (33) is movably connected to the inner shell (33) on all sides; a slider (331) is welded to the outer wall of one side of the inner shell (33); the other end of the slider (331) movably passes through the slide groove on the outer shell (31) and is fixedly connected to the induction plate (332); the lower surface of the induction plate (332) is abutted against the top of the pressure sensor (32); the bottom of the inner shell (33) is rotatably connected to the bottom cover (34); an electromagnet (35) and a permanent magnet (36) are fixedly connected to one side of the bottom of the inner shell (33) and one side of the outer wall of the bottom cover (34), respectively.

2. A polyurethane foaming agent preparation and mixing device according to claim 1, characterized in that: One end of the rotating tube (21) rotates through the outer wall of one side of the mixing tank (1) and is sleeved with a first gear (211); the other end of the rotating tube (21) is rotatably connected to the other side of the interior of the mixing tank (1) through a fixing frame (215); a motor (213) is fixedly connected to the lower part of the outer wall of one side of the mixing tank (1) through a mounting frame (212); a second gear (214) is sleeved on the output shaft of the motor (213); and the second gear (214) is meshingly connected to the lower part of the first gear (211).

3. A polyurethane foaming agent preparation and mixing device according to claim 2, characterized in that: A discharge port (12) is provided on the other outer wall of the mixing tank (1), a tank cover (121) is internally threadedly connected to the discharge port (12), and a handle (122) is welded on one outer wall of the tank cover (121).

4. A polyurethane foaming agent preparation and mixing device according to claim 3, characterized in that: Support frames (13) are fixedly connected to both sides of the bottom of the mixing tank (1).

5. A polyurethane foaming agent preparation and mixing device according to claim 2, characterized in that: A through hole (216) is provided on the outer wall of the fixing frame (215), a bearing (217) is fixedly connected inside the through hole (216), and the other end of the rotating tube (21) is rotatably sleeved inside the bearing (217).

6. A polyurethane foaming agent preparation and mixing device according to claim 1, characterized in that: The rear end surface of the heating box (23) is welded with fixing rods (232) around its periphery, and the other end of the fixing rods (232) is welded around the front end surface of the mixing tank (1).

7. A polyurethane foaming agent preparation and mixing device according to claim 1, characterized in that: A plurality of groups of heat exchange fins (241) are sleeved on the outer wall of the heat exchange tube (24) at equal intervals from left to right, and the heat exchange fins (241) are all located inside the heating box (23).

8. A polyurethane foaming agent preparation and mixing device according to claim 1, characterized in that: Both sides of the bottom cover (34) are rotatably connected to connecting rods (341), and the other ends of the connecting rods (341) are movably connected to the inside of the arc-shaped grooves (333) on the front and rear end surfaces of the inner shell (33).

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