Anti-caking stirring device for fireproof coating production

Abstract

The anti-caking stirring device comprises a stirring tank and a feeding assembly, a first rotating shaft is arranged in the stirring tank, the top wall of a tank body of the stirring tank is fixedly connected with a first bevel gear, the first rotating shaft is sequentially provided with a first stirring assembly and a second stirring assembly from top to bottom, and the second stirring assembly is fixedly connected with a second bevel gear. The feeding assembly comprises a hopper and a material conveying pipe, one end of the material conveying pipe is communicated with the stirring tank, and the other end of the material conveying pipe is communicated with the hopper, during use, filler is uniformly fed into the stirring tank through the material conveying pipe, stirring rods in the first stirring assembly are driven by the first rotating shaft to rotate in and out from the material liquid level of the stirring tank, the surface tension of the material liquid level is destroyed, and the stirring efficiency is improved; meanwhile, the second stirring assembly is used for stirring the stirring tank, so that the mixing effect of the filler and the material is improved, and the quality of the fireproof coating is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire retardant coating production, in particular to an anti-caking stirring device for fire retardant coating production. Background Art

[0002] Building fire protection is an important field in fire science and technology, and fire retardant coatings are an important component of fireproof building materials. There are many kinds of fire retardant coatings on the market. Among them, ceramic fire retardant coatings have better fireproof properties and are widely used because they can form a protective coating that has both the flexibility of polymer materials and the high strength, durability and high temperature resistance of inorganic materials after curing.

[0003] Ceramic fire retardant coatings are mostly inorganic-organic composite coatings composed of metal oxides, non-metallic oxides and silane coupling agents. In order to increase the heat resistance of ceramic coatings, hollow microspheres are often added to the coating to increase the heat resistance. Hollow microspheres are a loose inorganic non-metallic powder material with good sound insulation, flame retardancy, electrical insulation, low density, low oil absorption, low thermal conductivity, etc., but its surface is hydrophilic and oleophobic.

[0004] Therefore, in the production process of ceramic coatings, when hollow microspheres are filled into polymers, due to the hydrophilic and oleophobic characteristics of hollow microspheres, the hollow microspheres tend to float on the surface of the polymer, and the bonding between the hollow microspheres and the polymer is relatively poor, which can easily lead to agglomeration between the hollow microspheres in the polymer, resulting in agglomeration. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, a stirring device for preventing caking in the production of fire retardant coatings is provided. The technical solution adopted by the utility model to solve the technical problems is:

[0006] An anti-caking stirring device for producing fire retardant coatings, comprising:

[0007] A stirring tank, wherein a first rotating shaft is provided in the stirring tank body and is rotatably connected thereto, a first rotating shaft is coaxially sleeved with a first bevel gear, the first bevel gear is fixedly connected to the top wall of the stirring tank body, the first bevel gear is in sliding contact with the first rotating shaft, a first stirring assembly and a second stirring assembly are sequentially installed on the first rotating shaft from top to bottom, the first stirring assembly comprises a first stirring shaft, the first stirring shaft is rotatably connected to the first rotating shaft, a second bevel gear is coaxially sleeved with the first stirring shaft, the first bevel gear and the second bevel gear are meshingly connected, and a plurality of stirring rods are fixedly connected to the first stirring shaft at intervals;

[0008] A feeding assembly comprises a hopper and a feeding pipe, one end of the feeding pipe is connected to the stirring tank, and the other end of the feeding pipe is connected to the hopper.

[0009] Preferably, a first feeding port for feeding liquid material is provided on the top wall of the stirring tank, the first feeding port is communicated with the stirring tank, and the first feeding port is communicated with the liquid material storage tank through a pipeline.

[0010] Preferably, a second feeding port for feeding solid materials is provided on the top wall of the stirring tank, the second feeding port is communicated with the stirring tank, and the end of the feeding pipe is passed through the second feeding port.

[0011] Preferably, a feed discharge port is provided on the bottom wall of the stirring tank, and the feed discharge port is communicated with the stirring tank.

[0012] Preferably, a stirring motor is fixedly connected to the top wall of the stirring tank, and the first rotating shaft passes through the top wall of the stirring tank upward and is connected to the shaft end of the stirring motor.

[0013] Preferably, the second stirring component comprises a spiral blade, and the spiral blade is coaxially sleeved on the first rotating shaft and fixedly connected to the first rotating shaft.

[0014] Preferably, a connecting block is fixedly sleeved on the first rotating shaft, and one end of the first stirring shaft close to the first rotating shaft is inserted into the connecting block and is rotatably connected to the connecting block.

[0015] Preferably, a support is fixedly connected to the bottom wall of the mixing tank, the support is located above the discharge port, and the lower end of the first rotating shaft is penetrated by the support and is rotatably connected to the support.

[0016] Preferably, a through hole is provided on the support, and the through hole is communicated with the feed opening.

[0017] Preferably, a feed shaft is inserted into the feed pipe and rotatably connected thereto, and an auger blade is coaxially sleeved on the feed shaft and fixedly connected thereto.

[0018] Preferably, a feeding motor is fixedly mounted on one end of the feeding pipe close to the hopper, and one end of the feeding shaft passes through the feeding pipe and is connected to the shaft end of the feeding motor.

[0019] Preferably, a heating device is provided on the outside of the stirring tank, and the heating device includes a shell, and the side of the shell close to the stirring tank is in close contact with the stirring tank. A coil is wound inside the shell, and a heat-conducting medium is contained in the coil. Both ends of the coil pass through the shell and are connected to the heating device.

[0020] Preferably, the heat transfer medium includes heat transfer oil.

[0021] Preferably, a side of the shell away from the feed pipe is coated with a heat-insulating material, and the heat-insulating material includes heat-insulating cotton.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. In the utility model, a first stirring component is installed on the first rotating shaft, and the first stirring component includes a first stirring shaft, a second bevel gear is coaxially sleeved on the first stirring shaft, a stirring rod is fixedly connected to the first stirring shaft at intervals, and the first bevel gear is fixedly connected to the top wall of the stirring tank body, and the first bevel gear is meshingly connected with the second bevel gear. When in use, the first rotating shaft rotates to drive the first stirring component to rotate axially around the first rotating shaft. At the same time, with the cooperation of the first bevel gear, the first stirring shaft drives the stirring rod to rotate axially around the first stirring shaft. When rotating, the stirring rod periodically rotates in and out of the material liquid surface. On the one hand, the filler on the surface of the material liquid surface can be slapped into the material, and on the other hand, the surface tension of the material liquid surface can be destroyed, so that the filler can quickly enter the material, which is beneficial to improving the mixing efficiency, and at the same time, it can also effectively prevent the filler from floating on the material liquid surface for a long time and forming lumps.

[0024] 2. In the utility model, a second stirring component is coaxially fixedly sleeved on the first rotating shaft, and the second stirring component includes a spiral blade. The rotation of the first rotating shaft drives the spiral blade to rotate, and the spiral blade has a lifting effect on the material around the spiral blade. After the material around the spiral blade is lifted, the material at the side wall of the stirring tank will automatically flow back to the spiral blade, and the lifted material flows from the upper end of the spiral blade to the side wall of the stirring tank, thereby causing the material in the stirring tank to tumble, thereby effectively avoiding the sedimentation of the material and ensuring the uniformity of the material.

[0025] 3. The utility model is provided with a feeding assembly, which includes a hopper and a feeding pipe. A feeding shaft is inserted into the feeding pipe and rotatably connected. An auger blade is coaxially sleeved and fixedly connected to the feeding shaft. When in use, under the rotation of the feeding shaft, the auger blade evenly transports the solid powder in the hopper to the mixing tank, thereby extending the feeding time of the solid powder, avoiding the agglomeration of the solid powder caused by the untimely mixing of the solid powder when the solid powder is added at one time, and is beneficial to improving the mixing quality of the solid powder.

[0026] 4. The utility model is provided with a heating device, which can increase the temperature of the material in the stirring tank. On the one hand, the temperature increase is conducive to destroying the surface tension of the material and facilitating the solid powder to enter the liquid material. On the other hand, the temperature increase is also conducive to improving the mixing effect of the solid material in the liquid material and avoiding agglomeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 This is the main view of the overall structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the stirring tank of the utility model;

[0030] Figure 3 yes Figure 2 Sectional view of the structure of part A;

[0031] Figure 4 It is a schematic diagram of the internal structure of the heating device of the utility model;

[0032] Figure 5 It is a schematic diagram of the internal structure of the material conveying pipe of the utility model.

[0033] Description of reference numerals:

[0034] 100 agitating tank; 101 a first bevel gear; 102 a first feeding port; 103 a second feeding port; 104 a discharge port; 105 a support; 106 a through hole; 110 a first rotating shaft; 111 a first stirring shaft; 112 a second bevel gear; 113 a stirring rod; 114 a spiral blade; 115 a connecting block; 120 a shell; 121 a coil; 122 an insulating layer; 200 a hopper; 201 a feeding pipe; 202 a feeding shaft; 203 an auger blade. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] like Figure 1-3 As shown, the utility model proposes an anti-caking stirring device for the production of fire retardant coatings, which includes:

[0037] A stirring tank 100, wherein a first rotating shaft 110 is disposed in the stirring tank 100 and is rotatably connected thereto, a first bevel gear 101 is coaxially sleeved on the first rotating shaft 110, the first bevel gear 101 is fixedly connected to the top wall of the stirring tank 100, the first bevel gear 101 is in sliding contact with the first rotating shaft 110, a first stirring assembly and a second stirring assembly are sequentially mounted on the first rotating shaft 110 from top to bottom, the first stirring assembly comprises a first stirring shaft 111, the first stirring shaft 111 is rotatably connected to the first rotating shaft 110, a second bevel gear 112 is coaxially and fixedly sleeved on the first stirring shaft 111, the first bevel gear 101 and the second bevel gear 112 are meshingly connected, and a plurality of stirring rods 113 are fixedly connected to the first stirring shaft 111 at intervals;

[0038] The feeding assembly includes a hopper 200 and a feeding pipe 201 . One end of the feeding pipe 201 is connected to the stirring tank 100 , and the other end of the feeding pipe 201 is connected to the hopper 200 .

[0039] A first feeding port 102 for feeding liquid materials is provided on the top wall of the stirring tank 100 . The first feeding port 102 is connected to the stirring tank 100 . The first feeding port 102 is connected to the liquid material storage tank through a pipeline.

[0040] A second feeding port 103 for feeding solid materials is provided on the top wall of the mixing tank 100 . The second feeding port 103 is communicated with the mixing tank 100 , and an end of the feeding pipe 201 is passed through the second feeding port 103 .

[0041] A feed opening 104 is provided on the bottom wall of the stirring tank 100 , and the feed opening 104 is communicated with the stirring tank 100 .

[0042] Fire retardant coatings are mainly composed of a mixture of binders, fillers and solvents and are relatively viscous. Taking water-based ceramic-based thermal insulation fire retardant coatings as an example, the binders in fire retardant coatings mainly include organic resins and tetraethyl orthosilicate. The solvent is a liquid chemical solvent, such as n-propanol. The filler is generally an inorganic oxide powder or flake material, including hollow microspheres, talcum powder, titanium dioxide, etc.

[0043] In the present embodiment, the first stirring component is provided with two groups, and the first stirring component is symmetrically arranged on both sides of the first rotating shaft 110. The lower end of the stirring rod 113 on the side close to the material liquid surface of the stirring tank 100 in the first stirring component is located in the material of the stirring tank 100. Therefore, when the first stirring component rotates, the stirring rod 113 can periodically move in and out from the material liquid surface of the stirring tank 100. On the one hand, the filler on the surface of the material liquid surface can be beaten into the interior of the material. On the other hand, the surface tension of the material liquid surface can be destroyed, so that the filler can quickly enter the material, which is beneficial to improving the mixing efficiency. At the same time, it also effectively avoids the filler from floating on the material liquid surface for a long time and forming lumps. Of course, the first stirring component also plays a stirring role.

[0044] The second stirring component is located inside the stirring tank 100 and is used to stir the mixture of filler, binder and solvent, namely the fire retardant coating, so that the fire retardant coating is uniform and avoids agglomeration and precipitation.

[0045] The feeding component is mainly used for transporting fillers. Liquid materials such as binders and solvents are fed from the liquid material storage tank into the mixing tank 100 via the first feeding port 102 through a pipeline. By opening the first feeding port 102 and the second feeding port 103, the feeding of solid materials and liquid materials does not interfere with each other.

[0046] The discharge port 104 is provided with a pipeline switch, which includes a butterfly valve, a ball valve, etc. In the initial state, the pipeline switch is closed and the discharge port 104 is in a closed state.

[0047] Before use, in the initial state, the binder and solvent are fed into the mixing tank 100 through the first feeding port 102 in a certain proportion, and the filler is poured into the hopper 200, so that the first stirring shaft 111 is located above the liquid surface of the binder and solvent mixture in the mixing tank 100, and the lower end of the stirring rod 113 on the first stirring shaft 111 close to the material liquid surface is in contact with the material liquid surface.

[0048] When in use, the delivery pipe 201 delivers the filler in the hopper 200 to the mixing tank 100 at a certain rate, and the filler falls downward to the material liquid surface on the mixing tank 100.

[0049] The first rotating shaft 110 rotates, and the rotation of the first rotating shaft 110 drives the first stirring component to rotate axially around the first rotating shaft 110. At the same time, with the cooperation of the first bevel gear 101, the first stirring shaft 111 drives the stirring rod 113 to rotate axially around the first stirring shaft 111. The lower end of the stirring rod 113 periodically moves in and out of the material. On the one hand, it can beat the filler on the surface of the material liquid into the material, and on the other hand, it can also destroy the surface tension of the material liquid surface, so that the filler on the material liquid surface can enter the material more quickly, which is not only conducive to improving the mixing efficiency of the material and the filler, but also effectively avoids the filler from floating on the material liquid surface for a long time and forming lumps.

[0050] After the filler enters the material, a mixture of filler, binder and solvent is formed, which is the finished fire-retardant coating. The first stirring component driven by the first rotating shaft 110 also drives the second stirring component to rotate. Under the action of the second stirring component, the fire-retardant coating in the stirring tank 100 is made uniform to avoid agglomeration and precipitation.

[0051] After the fire retardant coating in the stirring tank 100 is stirred evenly, the pipeline switch on the discharge port 104 is turned on, and the finished fire retardant coating can be discharged from the discharge port 104 .

[0052] like Figure 1-5 As shown, in one embodiment of the anti-caking stirring device for the production of fire retardant coatings of the utility model,

[0053] A stirring motor is fixedly connected to the top wall of the stirring tank 100 , and the first rotating shaft 110 passes through the top wall of the stirring tank 100 upwards and is connected to the shaft end of the stirring motor.

[0054] The second stirring assembly includes a spiral blade 114 , which is coaxially sleeved on the first rotating shaft 110 and fixedly connected to the first rotating shaft 110 .

[0055] A connecting block 115 is fixedly sleeved on the first rotating shaft 110 , and one end of the first stirring shaft 111 close to the first rotating shaft 110 is inserted into the connecting block 115 and rotatably connected to the connecting block 115 .

[0056] A support 105 is fixedly connected to the bottom wall of the mixing tank 100 . The support 105 is located above the feed opening 104 . The lower end of the first rotating shaft 110 is passed through the support 105 and is rotatably connected to the support 105 .

[0057] The support 105 is provided with a through hole 106 , which is communicated with the feed opening 104 .

[0058] A feeding shaft 202 is inserted into the feeding pipe 201 and is rotatably connected thereto, and an auger blade 203 is coaxially sleeved on the feeding shaft 202 and is fixedly connected thereto.

[0059] A feeding motor is fixedly mounted on one end of the feeding pipe 201 close to the hopper 200 , and one end of the feeding shaft 202 passes through the feeding pipe 201 and is connected to the shaft end of the feeding motor.

[0060] A heating device is provided on the outside of the stirring tank 100, and the heating device includes a shell 120. The side of the shell 120 close to the stirring tank 100 is in close contact with the stirring tank 100. A coil 121 is wound around the shell 120, and a heat-conducting medium is contained in the coil 121. Both ends of the coil 121 pass through the shell 120 and are connected to the heating device.

[0061] The heat transfer medium includes heat transfer oil.

[0062] A side of the shell 120 away from the feed pipe 201 is covered with a heat-insulating layer 122 , and the heat-insulating layer 122 includes heat-insulating cotton.

[0063] In this embodiment, the support 105 is a square seat, and the through hole 106 is opened on the side wall of the support 105. The mixed fire retardant coating enters the discharge port 104 from the tank body of the mixing tank 100 through the through hole 106 and is discharged.

[0064] After the filler is put into the hopper 200, when in use, the feed motor rotates to drive the feed shaft 202 and the auger blade 203 to rotate. Under the action of the auger blade 203, the filler in the hopper 200 can be evenly fed into the mixing tank 100 at a certain rate, thereby extending the feeding time of the filler and reducing the amount of filler fed each time, thereby effectively improving the mixing efficiency and mixing quality of the filler and the material, avoiding the agglomeration and precipitation caused by untimely stirring when all the filler is fed at one time, thereby ensuring the quality of the fire retardant coating.

[0065] It should also be specially noted that, in the present embodiment, the hopper 200 is located below the second feeding port 103, and the cooperation between the feed shaft 202 and the auger blades 203 also serves to lift the filler, which is also beneficial to reduce the labor intensity of workers during production. In addition, in the present embodiment, the feed motor is equipped with a transmission, so that the speed of the feed shaft 202 and the auger blades 203 can be adjusted, thereby adjusting the filler conveying rate and improving the applicability of the present device.

[0066] After the filler enters the interior of the material, a mixture of filler, binder and solvent is formed, i.e., the finished fire retardant coating. The first rotating shaft 110 rotates to drive the spiral blade 114 to rotate. When the spiral blade 114 rotates, it lifts the material around the spiral blade 114. When the material around the spiral blade 114 is lifted, the material at the side wall of the mixing tank 100 will automatically flow back to the area around the spiral blade 114. The lifted material flows from the upper end of the spiral blade 114 to the side wall of the mixing tank 100, thereby causing the material to flow back in the mixing tank 100, causing the material in the mixing tank 100 to roll, thereby effectively avoiding the sedimentation of the material in the mixing tank 100 and ensuring the uniformity of the material.

[0067] The heating equipment heats the heat transfer oil and circulates the heated heat transfer oil through the shell 120. The heat transfer oil heats the stirring tank 100 and the materials in the tank. After the temperature of the material increases, on the one hand, the surface tension of the material becomes smaller, thereby facilitating the mixing of fillers. On the other hand, the solubility of the material increases after the temperature increases, making it easier to mix the fillers and the materials, which is also beneficial to reduce the agglomeration and precipitation of the fillers.

[0068] In addition, a side of the shell 120 away from the feeding pipe 201 is covered with a heat-insulating layer 122 . The heat-insulating layer 122 can effectively reduce heat loss and also play a role in reducing energy consumption of the equipment.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anti-caking stirring device for the production of fire retardant coatings, It is characterized in that It includes: A stirring tank (100), wherein a first rotating shaft (110) is inserted into and rotatably connected to the tank body of the stirring tank (100), the first rotating shaft (110) is coaxially sleeved with a first bevel gear (101), the first bevel gear (101) is fixedly connected to the top wall of the tank body of the stirring tank (100), the first bevel gear (101) is in sliding contact with the first rotating shaft (110), a first stirring component and a second stirring component are sequentially installed on the first rotating shaft (110) from top to bottom, the first stirring component comprises a first stirring shaft (111), the first stirring shaft (111) is rotatably connected to the first rotating shaft (110), the first stirring shaft (111) is coaxially sleeved with a second bevel gear (112), the first bevel gear (101) and the second bevel gear (112) are meshingly connected, and a plurality of stirring rods (113) are fixedly connected to the first stirring shaft (111) at intervals; A feeding assembly, the feeding assembly comprising a hopper (200) and a feeding pipe (201), one end of the feeding pipe (201) being connected to the stirring tank (100), and the other end of the feeding pipe (201) being connected to the hopper (200).

2. The anti-caking stirring device for the production of fire retardant coating according to claim 1, It is characterized in that A first feeding port (102) for feeding liquid material is provided on the top wall of the stirring tank (100), and the first feeding port (102) is connected to the stirring tank (100), and the first feeding port (102) is connected to the liquid material storage tank through a pipeline.

3. The anti-caking stirring device for the production of fire retardant coating according to claim 1, It is characterized in that A second feeding port (103) for feeding solid materials is provided on the top wall of the stirring tank (100); the second feeding port (103) is connected to the stirring tank (100); and the end of the feeding pipe (201) is passed through the second feeding port (103).

4. The anti-caking stirring device for fire retardant coating production according to claim 1, It is characterized in that A stirring motor is fixedly connected to the top wall of the stirring tank (100), and the first rotating shaft (110) passes through the top wall of the stirring tank (100) upwards and is connected to the shaft end of the stirring motor.

5. The anti-caking stirring device for the production of fire retardant coating according to claim 1, It is characterized in that The second stirring component comprises a spiral blade (114), wherein the spiral blade (114) is coaxially sleeved on the first rotating shaft (110) and fixedly connected to the first rotating shaft (110).

6. The anti-caking stirring device for the production of fire retardant coating according to claim 1, It is characterized in that A material conveying shaft (202) is inserted into and rotatably connected to the material conveying pipe (201), and an auger blade (203) is coaxially sleeved on and fixedly connected to the material conveying shaft (202).

7. The anti-caking stirring device for the production of fire retardant coating according to claim 6, It is characterized in that A feeding motor is fixedly mounted on one end of the feeding pipe (201) close to the hopper (200), and one end of the feeding shaft (202) passes through the feeding pipe (201) and is connected to the shaft end of the feeding motor.

8. The anti-caking stirring device for fire retardant coating production according to claim 1, It is characterized in that A heating device is sleeved on the outside of the stirring tank (100), and the heating device comprises a shell (120). The side of the shell (120) close to the stirring tank (100) is in close contact with the stirring tank (100). A coil (121) is wound inside the shell (120), and a heat-conducting medium is contained in the coil (121). Both ends of the coil (121) pass through the shell (120) and are connected to the heating device.

9. The anti-caking stirring device for producing fire retardant coating according to claim 8, It is characterized in that The heat transfer medium includes heat transfer oil.

10. The anti-caking stirring device for producing fire retardant coating according to claim 9, It is characterized in that A side of the shell (120) away from the feed pipe (201) is coated with a heat-insulating layer (122), and the heat-insulating layer (122) includes heat-insulating cotton.

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