Circulating cooling device of colloid mill

Abstract

The utility model discloses a circulating cooling device of a colloid mill, which comprises a transmission case, a grinding head arranged on the transmission case, a stirring hopper arranged on the grinding head, a heat conduction interlayer arranged on the stirring hopper, a cold water tank arranged on one side of the transmission case, a cooling coil arranged in the cold water tank, one end of the cooling coil connected with the stirring hopper, and the other end of the cooling coil connected with the heat conduction interlayer. A second thermocouple resistor is arranged at the joint of the cooling coil and the stirring hopper, a circulating pump is arranged between the cold water tank and the transmission box, the output end of the circulating pump is connected with the other end of the cooling coil, and the input end of the circulating pump is connected with the output end of the grinding head. Resin and materials needing to be premixed are circulated and cooled through the circulating pump and the cooling coil, and the temperatures of the resin and the materials needing to be premixed can be monitored through the two thermocouple resistors, so that the temperatures of the resin and the materials needing to be premixed are adjusted; consequently, components that are difficult to disperse are pretreated without damaging resin matrix components.

Description

Technical Field

[0001] This utility model belongs to the field of resin modification and pretreatment production technology of fiber prepreg formulation, and in particular relates to a circulating cooling device for a colloid mill. Background Technology

[0002] Fiber prepreg is a composite material made from fibers (carbon fiber, glass fiber, etc.), formulated resins, release paper, and other materials through processes such as yarn spreading, hot pressing, cooling, coating, and winding. It's called prepreg because this is only the initial impregnation of resin and carbon fibers; the final impregnation occurs during product molding. Fiber prepregs are widely used in fishing tackle, sports equipment, sporting goods, aerospace, wind power, and rail transportation.

[0003] Formulated resins are crucial raw materials for fiber prepreg production. To ensure uniform mixing of the formulated resins, a colloid mill is used to thoroughly grind and mix the difficult-to-disperse components with the resin matrix beforehand. A colloid mill is a device used to grind solid particles or droplets into very fine particles in a liquid medium. It mainly consists of a high-speed rotating rotor and a stationary stator with a very small gap between them. When the material passes through this narrow gap, it is subjected to strong shearing forces, friction, and high-frequency vibrations, causing the particles in the material to be crushed, dispersed, or emulsified into even smaller particles. Combined with temperature control, the premixed components can be fully dispersed without damaging the resin matrix components. However, since resin matrices are usually quite viscous, they need to be stirred before processing with a colloid mill. In order to reduce stirring resistance, the resin temperature needs to be increased to increase fluidity. The resin temperature will rise again after processing with a colloid mill. Since the colloid mill needs to continuously circulate the resin during processing, the resin temperature will rise further during the circulation process. Excessive temperature may cause slight cross-linking of some resin structures and reduce reactivity. This is reflected in the appearance as a slight increase in viscosity or a darkening of color. Therefore, a cooling device is needed to cool the resin.

[0004] Therefore, we need to design a circulating cooling device for colloid mills to solve these problems. Utility Model Content

[0005] The problem to be solved by this invention is to provide a circulating cooling device for a colloid mill.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] The utility model provides a circulating cooling device of colloid mill, including transmission case, be provided with mill head on transmission case, be provided with stirring hopper on mill head, be provided with heat conduction interlayer on stirring hopper, one side of transmission case is provided with cold water tank, be provided with cooling coil pipe in cold water tank, one end of cooling coil pipe is connected with stirring hopper, be provided with second thermocouple resistance at the junction of cooling coil pipe and stirring hopper, be provided with circulating pump between cold water tank and transmission case, the other end of cooling coil pipe is connected with the output of circulating pump, the output of mill head is connected with the input of circulating pump, be provided with first thermocouple resistance between mill head and circulating pump, the other side of cold water tank is also provided with refrigerating machine, the output of refrigerating machine is connected with cold water tank.

[0008] Preferably, a cooling layer is arranged in the side wall of the mill head, a mill body is rotatably arranged in the mill head, a transmission shaft is fixedly arranged on the mill body, the free end of the transmission shaft extends into the transmission case, and a driven pulley is fixedly arranged on the transmission shaft, a driving motor is also fixedly arranged on the transmission case, a driving pulley is fixedly arranged on the output end of the driving motor, and the driving pulley and the driven pulley are connected through a transmission belt.

[0009] In this way, the temperature of the mill head can be controlled, so that the service life of the mill head is not affected by excessively high temperature.

[0010] Preferably, a stirring motor is fixedly arranged on the stirring tank, a stirring shaft is fixedly arranged on the output end of the stirring motor, the stirring shaft is located in the stirring tank, and a plurality of stirring scrapers are fixedly arranged on the stirring shaft.

[0011] In this way, the material in the stirring tank can be stirred to facilitate uniform heating.

[0012] Preferably, a discharge pipe is arranged on the output end of the mill head, a three-way discharge valve is fixedly arranged on the free end of the discharge pipe, the first thermocouple resistance is fixedly arranged on the discharge pipe, a connecting pipe is fixedly arranged on the three-way discharge valve, and the free end of the connecting pipe is connected with the circulating pump.

[0013] In this way, the temperature of the material in the discharge pipe can be detected through the first thermocouple resistance, the circulating pump can realize the circulation of the material, and the three-way discharge valve can control the output of the material according to the temperature of the material.

[0014] Preferably, a feeding valve is fixedly arranged at the connection between the stirring tank and the mill head.

[0015] In this way, the feeding can be controlled.

[0016] Preferably, the heat conduction interlayer is located in the side wall of the stirring hopper.

[0017] Thus, the material in the stirring hopper is heated.

[0018] The utility model has the advantages and positive effects that:

[0019] The utility model discloses a circulating pump and cooling coil are installed at the output end of colloid mill grinding head, utilize circulating pump to realize to the resin and the circulation of the material that needs to be premixed, and realize the temperature cooling of resin and the material that needs to be premixed through cooling coil, utilize two thermocouple resistances to monitor the temperature of resin and the material that needs to be premixed, to realize the temperature adjustment of resin and the material that needs to be premixed, to fully disperse the component of premixed under the condition of not damaging resin matrix composition. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without the creative labor.

[0021] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0022] Fig. 2 It is the internal structure cross section schematic diagram of the utility model.

[0023] The following is the explanation of the reference signs:

[0024] 1, transmission case;2, drive motor;3, grinding head;4, feed valve;5, cooling water pipe;6, discharge pipe;7, cooling sandwich;8, stirring hopper;9, stirring motor;10, stirring shaft;11, stirring scraper;12, heat-conducting sandwich;13, connecting pipe;14, three-way discharge valve;15, circulating pump;16, cold water tank;17, cooling coil;18, refrigeration machine;19, first thermocouple resistance;20, second thermocouple resistance;21, transmission belt;22, drive pulley;23, driven pulley;24, transmission shaft;25, grinding body. DETAILED DESCRIPTION

[0025] In the description of the utility model, it needs to be understood that, the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0026] In the description of the utility model, it needs to be understood that, the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0027] The utility model will be further described below in connection with the drawings:

[0028] As Figs. 1-2 Indicated, a kind of circulating cooling device of colloidal mill, including transmission case 1, transmission case 1 is provided with mill head 3, mill head 3 is provided with stirring hopper 8, stirring hopper 8 is provided with heat-conducting sandwich 12, one side of transmission case 1 is provided with cold water tank 16, cold water tank 16 is provided with cooling coil pipe 17, one end of cooling coil pipe 17 is connected with stirring hopper 8, second thermocouple resistance 20 is arranged at the connecting place of cooling coil pipe 17 and stirring hopper 8, circulating pump 15 is arranged between cold water tank 16 and transmission case 1, the other end of cooling coil pipe 17 is connected with the output end of circulating pump 15, the input end of circulating pump 15 is connected with the output end of mill head 3, first thermocouple resistance 19 is arranged between mill head 3 and circulating pump 15, the other side of cold water tank 16 is also provided with refrigerating machine 18, the output end of refrigerating machine 18 is communicated with cold water tank 16.

[0029] Specific, the side wall of the grinding head 3 is provided with a cooling layer 7, the grinding head 3 is rotatably provided with a grinding body 25, the grinding body 25 is fixedly provided with a transmission shaft 24, the free end of the transmission shaft 24 extends into the transmission box 1, and the transmission shaft 24 is fixedly provided with a driven pulley 23, the transmission box 1 is also fixedly provided with a driving motor 2, the output end of the driving motor 2 is fixedly provided with a driving pulley 22, the driving pulley 22 and the driven pulley 23 are connected by a transmission belt 21, so that the temperature of the grinding head 3 can be controlled, and the service life of the grinding head 3 is not affected by the high temperature.

[0030] Specific, the stirring motor 9 is fixedly arranged on the stirring tank, the output end of the stirring motor 9 is fixedly provided with a stirring shaft 10, the stirring shaft 10 is located in the stirring tank, and a plurality of stirring scrapers 11 are fixedly arranged on the stirring shaft 10, so that the material in the stirring tank can be stirred, and uniform heating is facilitated.

[0031] Specific, the output end of the grinding head 3 is provided with a discharge pipe 6, the free end of the discharge pipe 6 is fixedly provided with a three-way discharge valve 14, so that the first thermocouple resistance 19 can be fixedly arranged on the discharge pipe 6, so that the first thermocouple resistance 19 can detect the temperature of the material in the discharge pipe 6, and the circulating pump 15 can realize the circulation of the material, the connecting pipe 13 is fixedly arranged on the three-way discharge valve 14, the free end of the connecting pipe 13 is connected with the circulating pump 15, so that the three-way discharge valve 14 can control the output of the material according to the temperature of the material.

[0032] Specific, the feeding valve 4 is fixedly arranged at the connection between the stirring tank and the grinding head 3, so that the feeding can be controlled.

[0033] Specific, the heat-conducting layer 12 is located in the side wall of the stirring hopper 8, so that the material in the stirring hopper 8 can be heated.

[0034] The working process of the embodiment: before use, firstly close the feeding valve 4, then add resin and premixed materials into the stirring hopper 8, then add heat conducting oil into the heat conducting layer 12, then open the heating wire to heat the resin and premixed materials in the stirring hopper 8, then start the stirring motor 9 to rotate the stirring shaft 10, the stirring shaft 10 rotates to stir and mix the heated resin and premixed materials in the stirring hopper 8 through the stirring scraper 11, when the fluidity of the mixed resin and premixed materials meets the processing requirements of the colloid mill, open the feeding valve 4 to make the resin and premixed materials in the stirring hopper 8 flow into the grinding head 3, and start the driving motor 2 to rotate the driving pulley 22, and then transmit power to the driven pulley 23 through the transmission belt 21, and then rotate the grinding body 25 in the grinding head 3 through the transmission shaft 24, and then shear and homogenize the resin and premixed materials flowing into the grinding head 3.

[0035] Since the grinding body 25 in the grinding head 3 rotates at high speed, the grinding head 3 generates a large amount of heat, which affects the service life if not cooled in time, so the cooling water pipe 5 arranged on the grinding head 3 can input cooling liquid into the cooling layer 7 on the grinding head 3 to control the temperature of the grinding head 3.

[0036] The resin and premixed materials processed by the grinding body 25 in the grinding head 3 flow into the discharge pipe 6, the first thermal resistance of the discharge pipe 6 detects the temperature of the resin and premixed materials in the discharge pipe 6, if the temperature of the resin and premixed materials is too high, the three-way discharge valve 14 connects the discharge pipe 6 with the connecting pipe 13, at this time, the circulating pump 15 starts to work to transport the resin and premixed materials to the cooling coil 17, and the refrigerating machine 18 also starts to work to cool the water in the cooling water tank 16, so as to cool the resin and premixed materials in the cooling coil 17, and the resin and premixed materials in the cooling coil 17 flow out of the cooling coil 17 and then flow back into the stirring hopper 8, the second thermal resistance 20 detects the temperature of the resin and premixed materials flowing out of the cooling coil 17, and the first thermal resistance 19 detects the temperature of the resin and premixed materials flowing out of the grinding head 3, so as to control the refrigerating machine 18 to adjust the temperature of the water in the cooling water tank 16, so as to adjust the temperature of the resin and premixed materials, until the temperature of the resin and premixed materials in the discharge pipe 6 detected by the first thermal resistance 19 meets the infiltration requirements of carbon fibers, then open the discharge valve to discharge the processed resin and premixed materials meeting the temperature requirements from the three-way discharge valve 14.

[0037] The above has carried out the detailed description to one embodiment of the utility model, but the content described is only the preferred embodiment of the utility model, cannot be considered for limiting the implementation scope of the utility model. All equal changes and improvements etc. that are made in the utility model application scope should still belong to the patent coverage scope of the utility model.

Claims

1. A circulating cooling device for a colloid mill comprising a transmission case (1), characterized in that: The transmission box (1) is provided with a grinding head (3), the grinding head (3) is provided with a stirring hopper (8), the stirring hopper (8) is provided with a heat-conducting sandwich (12), one side of the transmission box (1) is provided with a cold water tank (16), the cold water tank (16) is provided with a cooling coil (17), one end of the cooling coil (17) is connected with the stirring hopper (8), a second thermocouple resistance (20) is arranged at the connection between the cooling coil (17) and the stirring hopper (8), a circulating pump (15) is arranged between the cold water tank (16) and the transmission box (1), the output end of the circulating pump (15) is connected with the other end of the cooling coil (17), the input end of the circulating pump (15) is connected with the output end of the grinding head (3), a first thermocouple resistance (19) is arranged between the grinding head (3) and the circulating pump (15), the other side of the cold water tank (16) is further provided with a refrigeration machine (18), and the output end of the refrigeration machine (18) is connected with the cold water tank (16).

2. A recirculating cooling device for a colloid mill as claimed in claim 1, characterized in that: The side wall of the grinding head (3) is provided with a cooling sandwich (7), the grinding head (3) is rotatably provided with a grinding body (25), the grinding body (25) is fixedly provided with a transmission shaft (24), the free end of the transmission shaft (24) extends into the transmission box (1), and a driven pulley (23) is fixedly arranged, a driving motor (2) is further fixedly arranged on the transmission box (1), the output end of the driving motor (2) is fixedly provided with a driving pulley (22), and the driving pulley (22) and the driven pulley (23) are connected through a transmission belt (21).

3. A recirculating cooling device for a colloid mill as defined in claim 1, characterized in that: The stirring hopper is fixedly provided with a stirring motor (9), the output end of the stirring motor (9) is fixedly provided with a stirring shaft (10), the stirring shaft (10) is located in the stirring hopper, and a plurality of stirring scrapers (11) are fixedly arranged on the stirring shaft (10).

4. A recirculating cooling device for a colloid mill as defined in claim 1, characterized in that: The output end of the grinding head (3) is provided with a discharge pipe (6), the free end of the discharge pipe (6) is fixedly provided with a three-way discharge valve (14), the first thermocouple resistance (19) is fixedly arranged on the discharge pipe (6), a connecting pipe (13) is fixedly arranged on the three-way discharge valve (14), and the free end of the connecting pipe (13) is connected with the circulating pump (15).

5. A recirculating cooling device for a colloid mill as defined in claim 1, characterized in that: A feeding valve (4) is fixedly arranged at the connection between the stirring hopper and the grinding head (3).

6. A recirculating cooling device for a colloid mill as defined in claim 1, characterized in that: The heat-conducting sandwich (12) is located in the side wall of the stirring hopper (8).

7. A recirculating cooling device for a colloid mill as defined in claim 2, characterized in that: The grinding head (3) is further provided with a cooling water pipe (5), and the cooling water pipe (5) is connected with the cooling sandwich (7).

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