阅读说明：本技术 一种聚氨酯浇注机用新型莫卡热载体加热融化装置 (Polyurethane casting machine is with novel moka heat carrier heating device that melts ) 是由 程尧 程舜禹 马险峰 赵本军 蔡淑峰 纵兆申 于 2019-10-06 设计创作，主要内容包括：本发明涉及一种聚氨酯浇注机用新型莫卡热载体加热融化装置,由加热釜和温控系统组成；其特征在于所述加热釜由不锈钢锅、锅盖、夹套加热层、芯部加热盘管等组成；所述锅盖与不锈钢锅之间用铰链连接,所述不锈钢锅底部设置放料管,放料管采用夹套式；不锈钢锅底部两法兰间设置不锈钢滤网；所述温度控制系统由电加热导热油温度控制器和相关管路组成。本发明可通过一定温度导热油循环对锅外和内部循环加热,保证莫卡均匀加热在其融化温度融化,不会因为温度过高而出现变色变质现象,保证并稳定了制品的质量,通过本系统融化的莫卡直接通入B料罐,摒弃了明火加热,人工加料的弊端,节省了人力,更为安全、方便、快捷。(The invention relates to a novel Mocha heat carrier heating and melting device for a polyurethane casting machine, which consists of a heating kettle and a temperature control system; it is characterized in that the heating kettle comprises a stainless steel pot, a pot cover, a jacket heating layer, a core heating coil and the like; the pot cover is connected with the stainless steel pot through a hinge, a material discharging pipe is arranged at the bottom of the stainless steel pot, and the material discharging pipe adopts a jacket type; a stainless steel filter screen is arranged between two flanges at the bottom of the stainless steel pot; the temperature control system consists of an electric heating heat conduction oil temperature controller and related pipelines. The heating system can circularly heat the outside and the inside of the pot through heat conduction oil at a certain temperature, ensures that the Mocha is uniformly heated and melted at the melting temperature, does not have the phenomenon of color change and deterioration due to overhigh temperature, ensures and stabilizes the quality of products, directly leads the Mocha melted by the system into the material tank B, abandons the defects of open fire heating and manual feeding, saves manpower, and is safer, more convenient and faster.)

1. A novel Mocha hot melting device for a polyurethane casting machine comprises a heating kettle (2) and a temperature control system (3), and is arranged on a Mocha tank (1) of the casting machine through a flange; the heating kettle (2) is characterized by comprising a stainless steel kettle (21), a kettle cover (22), a jacket heating layer (23), a core heating coil (24), a stainless steel filter screen (25), a connecting flange (26), a discharging pipe (27) and the like.

2. The stainless steel pan (21) of claim 1, which may be cylindrical or square cylindrical, with an outer heating jacket (23) and an inner heating coil (24); a discharging pipe (27) is arranged at the bottom of the stainless steel pot (21); a hinge is arranged between the pot cover (22) and the stainless steel, and the pot cover can be conveniently opened and closed through the hinge; the connecting flange (26) is arranged at the bottom of the Moca melting device, and can install and fix the Moca heating tank (2) on the upper cover of the casting machine Moca tank (1) by bolts.

3. A novel moka heating device as claimed in claim 1, wherein a material placing pipeline (27) and a flange are arranged at the lower part of the moka heating device, and the material placing pipeline and the flange can be fixed on an upper cover of a moka tank (1) of a casting machine through bolts.

4. The novel moka heating device as claimed in claim 1 is provided with a stainless steel filter screen (25) at the bottom, which is arranged between the bottom of the discharging pipe (27) and a flange connected with the moka tank (1), and the melted moka liquid can flow into the moka tank (1) of the casting machine through the filter screen (25).

5. The temperature control system (3) according to claim 1 is composed of a hot oil circulating pump (31), an electric control heating device (32), an oil outlet pipe (33) and an oil return pipe (34); the electric control heating device (32) comprises a temperature control meter (321), a temperature sensing probe (322), a heater (323), a heating pipe (324), relevant lines and the like, and is characterized in that the heating pipe (324) is installed in the heater (323), the outlet of the heater (323) is connected with a jacket heating layer (23) and a core heating coil (24) through an oil outlet pipe (33), the outlets of the jacket heating layer (23) and the core heating coil (24) are connected with an oil return pipe (34), the other end of the oil return pipe (34) is installed on an oil inlet of a hot oil circulating pump (31), and an outlet pipe of the hot oil circulating pump (31) is connected to the oil inlet of the heater (323); the heat conduction oil which is forced to circulate by the hot oil circulating pump (31) is heated in the heater and then is conveyed to the jacket heating layer (23) and the core heating coil (24), the heat exchange is carried out and then flows back to the hot oil circulating pump (31), the heat circulation is realized without stopping, the circulation heating is realized, the heating is carried out to the set temperature of 130 ℃, then the stop of the heating pipe circuit is controlled by the temperature sensing probe (322) and the temperature control meter (321), when the temperature is lower than the set temperature, the circuit is automatically switched on to continue heating, and the accurate control of the temperature is.

Technical Field

The invention relates to equipment for processing a polyurethane elastomer, in particular to a novel Mocha hot melting device for a polyurethane casting machine.

Background

The Moca MOCA is widely applied as a vulcanizing agent for synthesizing a polyurethane elastomer, exists in a solid powder state at normal temperature and normal pressure, needs to be heated and melted when put into production, and is metered, conveyed, mixed, reacted and cast to form in a liquid state. Properties of vulcanizing agent MOCA (101-14-4): 1. white powder to light yellow loose needle-shaped crystal, and heating to become black; 2. the melting point is 101-104 ℃, the relative density is 1.44, the relative density of a melt is 1.26(107 ℃), and the flash point is more than 230 DEG F; 3. soluble in dilute acid, ketone, ether, alcohol and aromatic hydrocarbon, and slightly soluble in water; 4. slightly hygroscopic; 5. has the danger of burning and explosion and is toxic. White powder is light yellow, loose needle crystal, and heated to become black. It is slightly hygroscopic. Soluble in ketones and aromatic hydrocarbons. White to light yellow loose needle crystal, and is heated to become black. It is slightly hygroscopic. MOCA is a vulcanizing agent for cast polyurethane wear-resistant rubber, is widely applied to the mechanical industry, the automobile and airplane manufacturing industry, the mining industry, sports facilities (such as plastic runways and plastic floors) and various light industry manufacturing industries, and can also be used as a cross-linking agent of polyurethane coatings and adhesives and a curing agent of epoxy resin to prepare products with extremely high electric resistance. MOCA can withstand a high temperature of 160 ℃ during dissolution, and the solution remains pale yellow and transparent at this temperature, and does not change color even after repeated dissolution, but changes color if the temperature is exceeded.

At present, most polyurethane product manufacturers melt Moka by heating the Moka in a container by open fire, pouring the melt into a material tank B of a casting machine manually, discharging the melt by a bottom valve, pumping a metering pump into a mixing chamber through a pipeline to be uniformly mixed with prepolymer for reaction, and then casting and molding. The heating method has the advantages that the temperature is difficult to control, and once the Mocha temperature is too high, the Mocha color changes and goes bad, so that the quality of the product is directly influenced; in the heating process, high-temperature Mocha flue gas continuously escapes into the air, so that the environment is polluted to a certain degree; in addition, the manual addition of the Moka is a dangerous factor, and the Moka is required to be fed into a material tank of a casting machine by ascending, so that the potential hazard of scalding accidents is great.

Disclosure of Invention

The invention aims to provide a thermal melting device for a polyurethane casting machine, which is characterized in that heat conducting oil is adopted for circularly heating the inside and the outside of the thermal melting device, the temperature is controlled at 130 ℃, the temperature upper and lower deviation is not more than +/-1 ℃, the feeding is convenient, the thermal melting device runs in a sealed manner, the melting quality of a die card can be improved and stabilized, and the hidden danger of scalding accidents is eliminated.

The Mocha melting device for the polyurethane casting machine comprises a heating kettle and a temperature control system.

Specifically, the heating kettle comprises a stainless steel pot, a pot cover, a jacket heating layer, a core heating coil and the like.

Specifically, the stainless steel pot can be cylindrical or square column-shaped, the outer edge of the stainless steel pot is provided with a heating jacket, and the heating coil is arranged inside the stainless steel pot; a discharging pipe is arranged at the bottom of the stainless steel pot; the pot cover and the heating kettle are provided with a hinge, and the pot cover can be opened and closed conveniently through the hinge.

Specifically, the temperature control system consists of an electric heating heat conduction oil temperature controller and related pipelines; the pipeline is connected with the boiler outer jacket, the coil pipe inside the boiler and the jacket type discharging pipe, so that the heating of the moka and the conveying pipeline thereof can be realized, and the moka is ensured to be in a molten state in the whole process of conveying and metering.

The electric control heating device comprises a temperature control meter, a temperature sensing probe, a heating pipe, a relevant line and the like, the heating pipe is installed in the heater, an outlet of the heater is connected with a jacket heating layer and a core heating pipe through an oil outlet pipe, the jacket heating layer and the core heating pipe are connected, the outlet of the jacket heating layer and the outlet of the core heating pipe are connected with an oil return pipe, the other end of the oil return pipe is installed on an oil inlet of a hot oil circulating pump, and an outlet pipe of the.

The bottom of the heating kettle is provided with a stainless steel filter screen which is arranged between two flanges connected between the bottom discharging pipe and the B material tank.

The principle of the invention is as follows: mocha powder or granule material add into the heating tank, conduction oil circulation heating device temperature sets up at 130 ℃, start circulation heating, the conduction oil that heats gets into clamp cover and the inside heating pipe of Mocha heating tank by outlet pipe way, make the temperature of clamp cover and inside heating pipe constantly rise, the Mocha melts gradually under the high temperature heating effect, because the temperature setting is at 130 ℃, as long as the conduction oil temperature reaches the settlement temperature, just stop the heating, heating device's temperature control can be accurate to plus-minus 1 ℃, the melting of Mocha has not only been guaranteed in accurate control, also ensure that the Mocha can not go bad because of the overtemperature discolour, guarantee the quality of goods effectively. The melted moka flowed through the screen into the moka tank. And the liquid after the Moca is heated and melted flows into a casting machine Moca tank at the lower end through the small holes of the filter screen, is metered and input into a casting head through a metering pump, is mixed and stirred with other components, is cast into a mold, and finally forms a polyurethane product, thus finishing the whole production process.

The invention has the advantages that: 1. the mode of heating the moka by using coal gas open fire, manual feeding and open heating is abandoned, the heating tank is adopted for closed heating, automatic feeding is adopted, labor is saved, the potential safety hazard of artificial scalding is eliminated, safety and environmental protection are realized, and dissipation and emission of the moka smoke in the air are avoided. 2. The heat-conducting oil circulation heating device is adopted, the temperature is accurately controlled, the precision can reach plus or minus 1 degree, the temperature is ensured not to exceed the melting temperature of the Mocha, the quality of the Mocha liquid is ensured, and the Mocha liquid is not deteriorated or discolored due to overhigh temperature, so that the quality of products is ensured. 3. The setting of outside jacket and inside hot coil pipe heating, the conduction oil circulation of usable uniform temperature is to the pot outer with the inside circulation concurrent heating, makes the mo ka temperature even, and rate of heating is fast, and automatic control has guaranteed that being heated of mo ka is even, melts evenly, guarantees that mo ka melts at its melting temperature, can not appear discolouing rotten phenomenon because of the high temperature, helps improving the goods quality, improves staff's operational environment. 4. The device and the casting machine are connected through the pipeline flange, the filter screen is arranged between flanges at the connecting part, the casting machine does not need to be greatly modified, the melted Moka of the system is directly led into the B material tank, and the system can be conveniently connected with any casting machine.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the Moca heated kettle of the present invention.

In the figure, 1, a casting machine mocha tank, 11, an upper mocha tank cover, 2, a heating kettle, 21, a stainless steel pot, 22, a pot cover, 23, a jacket heating layer, 24, a core heating coil, 25, a stainless steel filter screen, 26, a connecting flange, 3, a heat-conducting oil circulating heating device, 31, a hot oil circulating pump, 32, an electric control heating device, 33, an oil outlet pipe and 34, an oil return pipe.

[ detailed description ] embodiments

The invention will be further explained with reference to the drawings.

As shown in the figure 1 and the figure 2, the invention relates to a novel Mocha hot melting device for a polyurethane casting machine, which is characterized by consisting of a heating kettle 2 and a temperature control system 3, and the device is arranged on a Mocha tank 1 of the casting machine through a flange; it is characterized in that the heating tank 2 consists of a stainless steel pot 21, a pot cover 22, a jacket heating layer 23, a core heating coil 24, a stainless steel filter screen 25, a connecting flange 26 and the like; the connecting flange 26 is arranged at the bottom of the Mocha melting device and can be installed and fixed on the upper cover 11 of the casting machine Mocha tank 1 by bolts; the bottom of the heating kettle 2 is provided with a stainless steel filter screen 25 which is arranged between two flanges connected between a bottom discharging pipe 27 and the casting machine Mocha tank 1; a hinge is arranged between the pot cover 22 and the stainless steel pot 21, so that the pot cover 22 can be conveniently opened and closed through the hinge, and the sealing during charging and heating is facilitated.

As shown in fig. 1 and fig. 2, the heat conducting oil heating and circulating device 3 is composed of a hot oil circulating pump 31, an electric control heating device 32, an oil outlet pipe 33 and an oil return pipe 34; the electric control heating device comprises a temperature control meter 321, a temperature sensing probe 322, a heating pipe 323, a heater 324, relevant lines and the like, wherein the heating pipe 323 is arranged in the heater 324, the outlet of the heater 324 is connected with the sheathed heating layer 23 and the core heating coil 24 through an oil outlet pipe 33, the outlets of the sheathed heating layer 23 and the core heating coil 24 are connected with an oil return pipe 34, the other end of the oil return pipe 34 is arranged on an oil inlet of a hot oil circulating pump 31, and an outlet pipe of the hot oil circulating pump 31 is connected with the oil inlet of the heater 324; the heat conducting oil forced to circulate by the hot oil circulating pump 31 is heated in the heater 324 and then conveyed to the jacket 21 and the core heating coil 24, the heat exchange is carried out, the heat conducting oil flows back to the circulating pump 31, the circulation is not stopped, the circulation heating is realized, the heating is carried out to the set temperature of 130 ℃, the temperature control meter 321 controls the stop of the circuit of the heating pipe 323, when the temperature is lower than the set temperature, the circuit is automatically switched on to continue heating, and the accurate control of the temperature is realized.

As shown in figure 1, by the heating and the accurate control of the temperature of the circulating electric control heating device 32, under the uniform heating action of the jacket heating layer 23 and the core part heat coil pipe 24, the moka added in the moka heating tank 2 is stably melted at the melting temperature, and the liquid moka flows into the moka tank 1 below through the stainless steel filter screen 25, so that the whole moka melting process is completed.

In summary, the working process of the invention is as follows: mocha powder or granule material add into heating tank 2 in, 3 temperature settings of conduction oil circulation heating device are at 130 ℃, start circulation heating, the conduction oil that heats gets into clamp cover zone of heating 23 and inside heating coil 24 of Mocha heating tank 2 by outlet line, make the temperature of clamp cover 23 and inside heating coil 24 constantly rise, the Mocha melts gradually under the high temperature heating effect, because the temperature setting is at 130 ℃, as long as the heat conduction oil temperature reaches the settlement temperature, just stop heating, heating device's temperature control can be accurate to plus-minus 1 ℃, the melting of Mocha has not only been guaranteed in accurate control, also guarantee that the Mocha can not be rotten because of the overtemperature discolour, guarantee the quality of goods effectively. Liquid after the Moca is heated and melted flows into a casting machine Moca tank 1 at the lower end through the small holes of the filter screen, is metered and input into a casting head through a metering pump, is mixed and stirred with other components, is cast into a mold, and finally forms a polyurethane product, thus completing the whole production process; compared with the prior art, the method has the advantages of higher safety and convenience, more accurate control of the Moca melting temperature and guaranteed product quality.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.