CN108422616B - Polyurethane insulation board foaming system - Google Patents
Polyurethane insulation board foaming system Download PDFInfo
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- CN108422616B CN108422616B CN201810252853.2A CN201810252853A CN108422616B CN 108422616 B CN108422616 B CN 108422616B CN 201810252853 A CN201810252853 A CN 201810252853A CN 108422616 B CN108422616 B CN 108422616B
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- stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
Abstract
The invention belongs to the technical field of polyurethane production equipment, and particularly relates to a polyurethane insulation board foaming system which comprises a stirring unit, a water control unit and a foaming unit, wherein the stirring unit comprises a stirring bin, a heating cylinder, four stirring plates, a rotating rod and a motor; the stirring bin is cylindrical, a first opening is formed in the left side of the upper surface of the stirring bin, and a heating cylinder is fixedly installed inside the stirring bin; four stirring plates are arranged in the cylindrical heating cylinder; the stirring unit is used for stirring the raw materials, and the water control unit is matched with the foaming unit to foam the raw materials; the air pressure balance plate in the water control unit is fixedly connected with the opening through a first electromagnetic valve, a first pressure gauge and a first opening, and the right side of the air pressure balance plate is connected with the outside through a third electromagnetic valve. The foaming agent is mainly used for foaming reactants in the production process of the polyurethane insulation board, can improve the uniformity of raw materials, can fully foam the raw materials, and improves the foaming efficiency of the raw materials.
Description
Technical Field
The invention belongs to the technical field of polyurethane production equipment, and particularly relates to a polyurethane insulation board foaming system.
Background
With the shortage of the housing area of modern families, the thin-wall requirement of household refrigerator products is increasingly strong. In the manufacturing process of a refrigerator thin-wall product, the wall thickness of the refrigerator is reduced, so that the heat insulation performance of a foaming layer is poor, the mechanical strength is poor, the foaming raw material flows insufficiently at the corner with a complex structure, and the phenomenon of incomplete filling occurs. The cyclopentane foaming system widely used in the refrigerator at present can not meet the technical requirements of thin-walled products, so that the development of a foaming system with high fluidity, high heat preservation and high strength is imperative.
Some technical schemes of polyurethane foaming equipment also appear in the prior art, for example, a Chinese patent with application number of 201510094396.5 discloses a production foaming equipment of polyurethane sealing strips, and the machine tool uses two stepping motors on the upper part of a pouring head, so that the problem of blockage of a discharging pipe is solved. The material leakage is prevented upwards in the stirring area. The machine tool body is internally provided with the air conditioner, so that the polyurethane can enable the fluidity in the hose pipeline to meet the requirement of the optimal flow quantity under the temperature control, and meanwhile, the requirement of foaming the product in the foaming chamber on temperature foaming is also met. The bottom of the machine tool below the machine tool body is provided with a product foaming chamber, the bottom surface of the foaming chamber is provided with a rolling chain belt type conveying mechanism, a product of a polyurethane sealing strip is poured, after the product enters an F front opening of a temperature control foaming chamber, the product can be quickly foamed and shaped within a certain time under the regulation of temperature control and conveying speed, and the foamed and shaped product is sent out from a rear outlet.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a polyurethane insulation board foaming system which is mainly used for foaming reactants in a polyurethane insulation board production process, can improve the uniformity of raw materials and can enable the raw materials to be fully foamed. The raw materials are subjected to foaming reaction through the matching of the foaming unit and the stirring unit, and the steam pressure in the foaming bin is controlled through the matching of the water control unit and the foaming unit; the foaming efficiency of the raw materials is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the polyurethane insulation board foaming system comprises a stirring unit, a water control unit and a foaming unit, wherein the stirring unit comprises a stirring bin, a heating cylinder, four stirring plates, a rotating rod and a motor; the stirring bin is cylindrical, a first opening is formed in the left side of the upper surface of the stirring bin, and a heating barrel is fixedly installed inside the stirring bin; four stirring plates are arranged in the cylindrical heating cylinder; the four stirring plates are fixedly connected with a rotating shaft of the motor through a rotating rod; a water storage bin is arranged between the outer wall of the heating cylinder and the inner wall of the stirring bin; the water control unit comprises an air pressure balance plate, a first electromagnetic valve, a first pressure gauge and a third electromagnetic valve; the first electromagnetic valve is matched with the first pressure gauge to control the water vapor pressure in the air pressure balance plate; when the steam pressure in the foaming chamber is greater than a set value, the steam in the foaming chamber is discharged to the outside through the air pressure balancing plate and the third electromagnetic valve by opening the third electromagnetic valve; the air pressure balance plate is fixedly arranged on the lower surface of the stirring bin; the air pressure balance plate is fixedly connected with the first opening through a first electromagnetic valve, a first pressure gauge and a third electromagnetic valve; the foaming unit comprises a foaming bin, a foaming mechanism, a second electromagnetic valve and a second pressure gauge, the foaming mechanism, the second electromagnetic valve and the second pressure gauge are arranged in the foaming bin, the foaming mechanism is used for spraying steam to the second opening direction, and the steam reacts with the melted raw materials to generate carbon dioxide so as to complete the foaming of the raw materials; the foaming mechanism is connected with the first opening through a second electromagnetic valve and a second pressure gauge; the stirring unit is used for stirring the raw materials, and the water control unit is matched with the foaming unit to foam the raw materials;
conveying the raw materials into the heating cylinder through a first feeding hole, and then closing the first feeding hole; the heating cylinder heats the raw materials, and the motor drives the stirring plate to stir the raw materials through the rotating rod; under the action of the heating cylinder, distilled water in the water storage bin is evaporated, and a first electromagnetic valve is opened to enable water vapor to enter the foaming cylinder through the air pressure balance plate, so that the foaming cylinder is preheated; then opening a second electromagnetic valve to enable the water vapor to be sprayed towards a second opening through a foaming mechanism, then opening a control door at the second opening, and enabling the raw materials melted in the heating cylinder to flow into a foaming bin through the second opening; a discharge port is formed in the lower bottom plate of the foaming bin, and an automatic door is arranged on the discharge port and used for controlling the opening and closing of the discharge port; under the action of the foaming mechanism, the raw materials are subjected to foaming reaction. The foaming bin is internally provided with a third barometer which is used for detecting the air pressure value in the foaming bin, and the third barometer can stabilize the air pressure in the foaming bin by matching with a third electromagnetic valve, so that the amount of bubbles in the melted raw materials is controllable.
Preferably, a second opening penetrating through a lower bottom plate of the stirring bin is formed in the center of the lower surface of the air pressure balance plate; the second opening is used for conveying a melt of the raw materials in the heating cylinder to the foaming bin, and an automatic door is arranged on the second opening and used for controlling the second opening to be closed; the second opening is circular, and the lower end of the second opening is provided with a liquid guide plate; the upper surface of the liquid guide plate is provided with a plurality of liquid outlets penetrating through the liquid guide plate; the liquid outlet is used for making the melt above the liquid guide plate to dispersedly flow into the foaming bin, and is used for increasing the contact area between the melt and the water vapor and improving the foaming efficiency of the melt.
Preferably, the four stirring plates are the same component, the stirring plates are rectangular plates, and the cross section of each stirring plate is arc-shaped; the staggered arrangement has No. four openings on the stirring board, No. four openings are the rectangle, liquid guide mechanism is installed to No. four openings, the polyurethane raw materials after melting are more thick, adopt ordinary puddler not to reach the effect of predetermined stirring, the stirring board is the stirring of rectangle shaped plate raw materials after being favorable to melting, staggered arrangement has a plurality of No. four openings on the stirring board, be used for making and can fuse each other between the melting thing of stirring board both sides, stirring efficiency has been improved, liquid guide mechanism is arranged in to the melting thing collision each other in No. four openings, thereby improve the efficiency that the melting thing was stirred.
Preferably, the liquid guiding mechanism comprises two liquid separating plates and a confluence mechanism; the liquid separation plate and the confluence mechanism are fixedly arranged in the fourth port, and the liquid separation plate is matched with the confluence mechanism to accelerate the stirring of the raw materials; the liquid separation plate is a cuboid template; the liquid separation plates and the confluence mechanisms are arranged in a staggered mode, the melted raw materials are separated into three directions by the two liquid separation plates when passing through the four-opening, the separated melts are contacted with each other under the action of the confluence mechanisms to form two directions, and the melts are collided with each other in the processes of changing the lanes and reuniting the melts; the liquid separating plate is matched with the confluence mechanism to further improve the stirring efficiency of the melt.
Preferably, the confluence mechanism comprises a liquid separation head, a metal folding pipe and a closing plate; the liquid separation head is fixedly arranged on the closing plate through a sliding telescopic rod; the outer layer of the sliding telescopic rod is sleeved with a spring; the metal folding tube is positioned on the outer layer of the sliding telescopic rod; one end of the metal folding pipe is fixedly connected with the sealing plate, and the other end of the metal folding pipe is fixedly connected with the liquid separation head; the cross-sectional shape of branch liquid head is semi-circular. The melt can collide with the liquid separation head when passing through the mechanism that converges, and the slip telescopic link makes the liquid separation head produce the vibration through cooperating with the spring, and the vibration that the liquid separation head produced can act on the melt, has further improved the mixing efficiency of melt.
Preferably, the air pressure balancing plate comprises a first upper bottom plate, a first side plate and a first lower bottom plate; the first upper bottom plate is fixedly arranged on the first lower bottom plate through the first side plate; the upper surface of the first lower bottom plate is uniformly provided with a plurality of through holes penetrating through the first lower bottom plate, and a spiral plate is fixedly arranged between the first upper bottom plate and the first lower bottom plate; a first air inlet hole is formed in the left side of the first side plate; a second air inlet hole is formed in the right side of the first side plate; the spiral plate is used for dredging the water vapor in the air pressure balance plate, so that the uniformity of the water vapor in the air pressure balance plate is improved.
Preferably, the foaming mechanism comprises a mounting frame, a second air inlet pipe, an air storage bin and a spray head; the air storage bin is fixedly arranged on a side plate of the foaming bin through a mounting rack, a third air inlet is formed in the left side surface of the air storage bin, and the third air inlet is fixedly connected with the right end of the second air inlet pipe; the spray head is connected with the gas storage bin through a fourth pipe; the upper surface of the spray head is provided with spray holes; the shower nozzle is arranged in will No. two openings the decurrent raw materials that melt carries out the vapor and sprays to improve the atomization efficiency who melts the raw materials.
Preferably, a conical spray post is fixedly arranged above the spray hole; the water vapor in the spray holes is sprayed into the foaming bin through the spray columns; meanwhile, the melted raw materials in the second opening can flow down to the upper surface of the spray head, so that the spray holes can be blocked; the conical spray post is used for preventing the melted raw materials from blocking the spray hole when flowing on the upper surface of the spray head.
The invention has the beneficial effects that:
1. the invention relates to a polyurethane insulation board foaming system, wherein a foaming device comprises a stirring unit, a water control unit and a foaming unit; the stirring unit is used for heating and stirring reaction raw materials, the water control unit is arranged on the outer layer of the stirring unit, the water control unit is matched with the stirring unit to enable the raw materials in the stirring unit to be heated uniformly, meanwhile, distilled water in the water control unit is evaporated, and water vapor in the water control unit is conveyed into the foaming bin to create a vapor environment for the foaming bin; the foaming unit can fully foam the stirred raw materials by matching with the stirring unit, so that the sufficiency of raw material foaming is improved.
2. The foaming unit comprises a foaming mechanism, a foaming bin, a second electromagnetic valve and a second pressure gauge; the foaming bin is used for providing a closed foaming environment; the foaming mechanism is used for conveying water vapor into the foaming bin; the second electromagnetic valve and the second pressure gauge are matched to control the steam pressure in the foaming mechanism, so that the steam pressure sprayed in the foaming mechanism is controllable, and the intensity of the foaming reaction can be controlled.
3. According to the polyurethane insulation board foaming system, four openings are arranged in the stirring plate in a staggered mode, a liquid guide mechanism is installed in the four openings and used for uniformly mixing melts in the four openings, the liquid guide mechanism comprises two liquid separation plates and a confluence mechanism, the two liquid separation plates are used for separating the melts in the four openings into three parts, and the confluence mechanism is used for reuniting the three separated melts into two molten liquids; the liquid guide mechanism is used for mixing the melts in the fourth opening again through being matched with the liquid separation plate, and the stirring efficiency of the stirring plate is further improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is an enlarged view of a portion C of FIG. 1;
FIG. 5 is a cross-sectional view D-D of FIG. 1;
FIG. 6 is a partial enlarged view of E in FIG. 3;
in the figure: the device comprises a stirring unit 1, a water control unit 2, a foaming unit 3, a stirring bin 11, a heating cylinder 12, a stirring plate 13, a rotating rod 14, a motor 15, a water storage bin 4, an air pressure balance plate 21, a first electromagnetic valve 22, a first pressure gauge 23, a third electromagnetic valve 24, a foaming bin 34, a foaming mechanism 31, a second electromagnetic valve 32, a second pressure gauge 33, a second opening 111, a liquid guide plate 112, a fourth opening 131, a liquid guide mechanism 132, a liquid distribution plate 133, a confluence mechanism 134, a liquid distribution head 135, a metal folding pipe 136, a sealing plate 137, a sliding telescopic rod 138, a spiral plate 211, an installation frame 311, a second air inlet pipe 312, an air storage bin 313, a spray head 314, a conical spray column 316, a first feed inlet 318 and a discharge outlet 319.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, in the polyurethane insulation board foaming system, a foaming device is adopted in the process, the foaming device includes a stirring unit 1, a water control unit 2 and a foaming unit 3, and the stirring unit 1 includes a stirring bin 11, a heating cylinder 12, four stirring plates 13, a rotating rod 14 and a motor 15; the stirring bin 11 is cylindrical, a first opening is formed in the left side of the upper surface of the stirring bin 11, and a heating cylinder 12 is fixedly installed inside the stirring bin 11; four stirring plates 13 are arranged in the cylindrical heating cylinder 12; the four stirring plates 13 are fixedly connected with a rotating shaft of a motor 15 through a rotating rod 14; a water storage bin 4 is arranged between the outer wall of the heating cylinder 12 and the inner wall of the stirring bin 11; the water control unit 2 comprises an air pressure balance plate 21, a first electromagnetic valve 22, a first pressure gauge 23 and a third electromagnetic valve 24; the first electromagnetic valve 22 controls the water vapor pressure in the air pressure balance plate 21 by matching with the first pressure gauge 23; when the steam pressure in the foaming chamber 34 is greater than a set value, the third electromagnetic valve 24 is opened to discharge the steam in the foaming chamber 34 to the outside through the air pressure balance plate 21 and the third electromagnetic valve 24; the air pressure balance plate 21 is fixedly arranged on the lower surface of the stirring bin 11; the air pressure balance plate 21 is fixedly connected with the first opening through a first electromagnetic valve 22, a first pressure gauge 23, and the right side of the air pressure balance plate 21 is connected with the outside through a third electromagnetic valve 24; the foaming unit 3 comprises a foaming bin 34, a foaming mechanism 31, a second electromagnetic valve 32 and a second pressure gauge 33, the foaming mechanism 31, the second electromagnetic valve 32 and the second pressure gauge 33 are arranged in the foaming bin 34, the foaming mechanism 31 is used for spraying steam to the direction of the second opening 111, and the steam reacts with the melted raw materials to generate carbon dioxide so as to complete the foaming of the raw materials; the foaming mechanism 31 is connected with the first opening through a second electromagnetic valve 32 and a second pressure gauge 33; the stirring unit 1 is used for stirring the raw materials, and the water control unit 2 is matched with the foaming unit 3 to foam the raw materials;
raw material is conveyed into the heating cylinder 12 through the first feeding hole 318, and then the first feeding hole 318 is closed; the heating cylinder 12 heats the raw materials, and the motor 15 drives the stirring plate 13 to stir the raw materials through the rotating rod 14; under the action of the heating cylinder 12, the distilled water in the water storage bin 4 is evaporated, and a first electromagnetic valve 22 is opened to enable the steam to enter the foaming cylinder through the air pressure balancing plate 21, so that the foaming cylinder is preheated; then the second electromagnetic valve 32 is opened to spray the water vapor towards the second opening 111 through the foaming mechanism 31, then the control door at the second opening 111 is opened, and the melted raw material in the heating cylinder 12 flows into the foaming bin 34 through the second opening 111; a discharge port 319 is arranged on the lower bottom plate of the foaming bin 34, and an automatic door is arranged on the discharge port 319 and used for controlling the opening and closing of the discharge port 319; the foaming mechanism 31 causes a foaming reaction of the raw material. The foaming chamber 34 is provided with a third barometer, the third barometer is used for detecting the air pressure value in the foaming chamber 34, and the third barometer can stabilize the air pressure in the foaming chamber 34 by matching with the third electromagnetic valve 24, so that the amount of bubbles in the melted raw material is controllable.
As an embodiment of the present invention, a second opening 111 penetrating through the lower bottom plate of the stirring bin 11 is provided at the center of the lower surface of the air pressure balance plate 21; the second opening 111 is used for conveying the melt of the raw materials in the heating cylinder 12 to the foaming bin 34, and an automatic door is arranged on the second opening 111 and used for controlling the second opening 111 to be closed; the second opening 111 is circular, and the lower end of the second opening 111 is provided with a liquid guide plate 112; the upper surface of the liquid guide plate 112 is provided with a plurality of liquid outlets penetrating through the liquid guide plate 112; the liquid outlet is used for enabling the melt above the liquid guide plate 112 to dispersedly flow into the foaming bin 34, and is used for increasing the contact area between the melt and the water vapor and improving the foaming efficiency of the melt.
As an embodiment of the present invention, the four stirring plates 13 are the same member, the stirring plate 13 is a rectangular plate, and the cross-sectional shape of the stirring plate 13 is an arc shape; no. four openings 131 are arranged on the stirring plate 13 in an alternating mode, the No. four openings 131 are rectangular, the liquid guiding mechanism 132 is installed at the No. four openings 131, the melted polyurethane raw material is viscous, the effect of preset stirring cannot be achieved by adopting a common stirring rod, the stirring plate 13 is a rectangular plate and is beneficial to stirring of the melted raw material, the No. four openings 131 are arranged on the stirring plate 13 in an alternating mode and are used for enabling the melts at two sides of the stirring plate 13 to be mutually fused, the stirring efficiency is improved, the liquid guiding mechanism 132 is used for mutually colliding the melts in the No. four openings 131, and therefore the efficiency of stirring of the melts is improved.
As an embodiment of the present invention, the liquid guiding mechanism 132 includes two liquid separating plates 133 and a converging mechanism 134; the liquid separation plate 133 and the confluence mechanism 134 are fixedly arranged in the fourth opening, and the liquid separation plate 133 is matched with the confluence mechanism 134 to accelerate the stirring of the raw materials; the liquid separation plate 133 is a rectangular plate; the liquid separating plates 133 and the converging mechanism 134 are arranged in a staggered mode, the melted raw materials are separated into three directions by the two liquid separating plates 133 when passing through the fourth opening 131, the separated melts are mutually contacted under the action of the converging mechanism 134 to form two directions, and the melts are mutually collided in the processes of changing the paths and converging again; the liquid separation plate 133 further improves the efficiency of stirring the melt by cooperating with the confluence mechanism 134.
As an embodiment of the present invention, the confluence mechanism 134 includes a liquid separation head 135, a metal folding tube 136, and a closing plate 137; the liquid separation head 135 is fixedly arranged on the closing plate 137 through a sliding telescopic rod 138; the outer layer of the sliding telescopic rod 138 is sleeved with a spring; the metal folding tube 136 is positioned on the outer layer of the sliding telescopic rod 138; one end of the metal folding tube 136 is fixedly connected with the closing plate 137, and the other end of the metal folding tube 136 is fixedly connected with the liquid separation head 135; the cross-sectional shape of the liquid-separating head 135 is semicircular. The melt can collide with the liquid separation head 135 when passing through the confluence mechanism 134, the sliding telescopic rod 138 enables the liquid separation head 135 to vibrate through matching with a spring, the vibration generated by the liquid separation head 135 can act on the melt, and the mixing efficiency of the melt is further improved.
As an embodiment of the present invention, the air pressure balance plate 21 includes a first upper bottom plate, a first side plate, and a first lower bottom plate; the first upper bottom plate is fixedly arranged on the first lower bottom plate through the first side plate; the upper surface of the first lower bottom plate is uniformly provided with a plurality of through holes penetrating through the first lower bottom plate, and a spiral plate 211 is fixedly arranged between the first upper bottom plate and the first lower bottom plate; a first air inlet hole is formed in the left side of the first side plate; a second air inlet hole is formed in the right side of the first side plate; the spiral plate 211 serves to channel the water vapor inside the pressure balance plate 21, thereby improving the uniformity of the water vapor inside the pressure balance plate 21.
As an embodiment of the present invention, the foaming mechanism 31 includes a mounting frame 311, a second air inlet pipe 312, an air storage bin 313 and a spray head 314; the air storage bin 313 is fixedly arranged on a side plate of the foaming bin 34 through a mounting frame 311, a third air inlet is formed in the left side surface of the air storage bin 313, and the third air inlet is fixedly connected with the right end of the second air inlet pipe 312; the spray head 314 is connected with the gas storage bin 313 through a fourth pipe; the upper surface of the spray head 314 is provided with spray holes 315; the spray head 314 is used for spraying water vapor on the melted raw material flowing down from the second opening 111, thereby improving the atomization efficiency of the melted raw material.
As an embodiment of the present invention, a conical spray post 316 is fixedly mounted above the spray hole 315; the water vapor in the spray holes 315 is sprayed into the foaming bin 34 through the spray columns; meanwhile, the melted material in the second opening 111 may flow down to the upper surface of the nozzle 314, thereby blocking the nozzle 315; the tapered spray post 316 is provided to prevent the melted raw material from blocking the spray hole 315 while flowing on the upper surface of the spray head 314.
During operation, distilled water is conveyed into the water storage bin 4 through the water inlet 317, and then the water inlet 317 is closed; raw material is conveyed into the heating cylinder 12 through the first feeding hole 318, and then the first feeding hole 318 is closed; the heating cylinder 12 heats the raw materials, and the motor 15 drives the stirring plate 13 to stir the raw materials through the rotating rod 14; under the action of the heating cylinder 12, distilled water in the water storage bin 4 evaporates, the first electromagnetic valve 22 is opened to enable water vapor to enter the air pressure balance plate 21 through the first opening, the hose and the first air pressure gauge, the water vapor in the air pressure balance plate 21 enters the foaming bin 34 through the through hole, the heating device in the foaming bin 34 is in a working state, then the second electromagnetic valve 32 is opened to enable the water vapor to flow into the foaming bin 34 through the first opening, the hose, the second pressure gauge 33, the second air inlet pipe 312, the air storage bin 313, the spray head 314 and the conical spray column 316 and spray towards the second opening 111, then the control door at the second opening 111 is opened, raw materials melted in the heating cylinder 12 flow into the foaming bin 34 through the second opening 111, the raw materials are subjected to foaming reaction under the action of the conical spray column 316, and the reacted foaming liquid is conveyed into a grinding tool through the discharge hole 319 for casting and molding.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a polyurethane insulation board foaming system which characterized in that: the device comprises a stirring unit (1), a water control unit (2) and a foaming unit (3), wherein the stirring unit (1) comprises a stirring bin (11), a heating cylinder (12), four stirring plates (13), a rotating rod (14) and a motor (15); the stirring bin (11) is cylindrical, a first opening is formed in the left side of the upper surface of the stirring bin (11), and a heating cylinder (12) is fixedly installed inside the stirring bin (11); four stirring plates (13) are arranged in the cylindrical heating cylinder (12); the four stirring plates (13) are fixedly connected with a rotating shaft of a motor (15) through a rotating rod (14); a water storage bin (4) is arranged between the outer wall of the heating cylinder (12) and the inner wall of the stirring bin (11); wherein the content of the first and second substances,
the water control unit (2) comprises an air pressure balance plate (21), a first electromagnetic valve (22), a first pressure gauge (23) and a third electromagnetic valve (24); the air pressure balance plate (21) is fixedly arranged on the lower surface of the stirring bin (11); the air pressure balance plate (21) is fixedly connected with the first opening through a first electromagnetic valve (22), a first pressure gauge (23), and the right side of the air pressure balance plate (21) is connected with the outside through a third electromagnetic valve (24); the foaming unit (3) comprises a foaming bin (34), a foaming mechanism (31), a second electromagnetic valve (32) and a second pressure gauge (33), the foaming mechanism (31), the second electromagnetic valve (32) and the second pressure gauge (33) are arranged in the foaming bin (34), and the foaming mechanism (31) is connected with the first opening through the second electromagnetic valve (32) and the second pressure gauge (33); the stirring unit (1) is used for stirring the raw materials, and the water control unit (2) is matched with the foaming unit (3) to foam the raw materials;
a second opening (111) penetrating through a lower bottom plate of the stirring bin (11) is formed in the center of the lower surface of the air pressure balance plate (21); the second opening (111) is circular, and the lower end of the second opening (111) is provided with a liquid guide plate (112); the upper surface of the liquid guide plate (112) is provided with a plurality of liquid outlets penetrating through the liquid guide plate (112);
the four stirring plates (13) are the same component, the stirring plates (13) are rectangular plates, and the cross sections of the stirring plates (13) are arc-shaped; four openings (131) are arranged on the stirring plate (13) in a staggered mode, the four openings (131) are rectangular, and liquid guide mechanisms (132) are installed in the four openings (131);
the liquid guide mechanism (132) comprises two liquid separating plates (133) and a confluence mechanism (134); the liquid separation plate (133) and the confluence mechanism (134) are fixedly arranged in the fourth port, and the liquid separation plate (133) is matched with the confluence mechanism (134) to accelerate the stirring of the raw materials; the liquid separation plate (133) is a cuboid template;
the confluence mechanism (134) comprises a liquid separation head (135), a metal folding pipe (136) and a closing plate (137); the liquid separation head (135) is fixedly arranged on the closing plate (137) through a sliding telescopic rod (138); the outer layer of the sliding telescopic rod (138) is sleeved with a spring; the metal folding tube (136) is positioned on the outer layer of the sliding telescopic rod (138); one end of the metal folding pipe (136) is fixedly connected with the closing plate (137), and the other end of the metal folding pipe (136) is fixedly connected with the liquid separation head (135); the cross section of the liquid separation head (135) is semicircular;
the air pressure balance plate (21) comprises a first upper bottom plate, a first side plate and a first lower bottom plate; the first upper bottom plate is fixedly arranged on the first lower bottom plate through the first side plate; a plurality of through holes penetrating through the first lower bottom plate are uniformly formed in the upper surface of the first lower bottom plate, and a spiral plate (211) is fixedly arranged between the first upper bottom plate and the first lower bottom plate; a first air inlet hole is formed in the left side of the first side plate; a second air inlet hole is formed in the right side of the first side plate;
the foaming mechanism (31) comprises a mounting frame (311), a second air inlet pipe (312), an air storage bin (313) and a spray head (314); the air storage bin (313) is fixedly arranged on a side plate of the foaming bin (34) through a mounting frame (311), a third air inlet is formed in the left side surface of the air storage bin (313), and the third air inlet is fixedly connected with the right end of the second air inlet pipe (312); the spray head (314) is connected with the gas storage bin (313) through a fourth pipe; the upper surface of the spray head (314) is provided with spray holes (315).
2. The polyurethane insulation board foaming system of claim 1, wherein: a conical spray post (316) is fixedly arranged above the spray hole (315).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810252853.2A CN108422616B (en) | 2018-03-26 | 2018-03-26 | Polyurethane insulation board foaming system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810252853.2A CN108422616B (en) | 2018-03-26 | 2018-03-26 | Polyurethane insulation board foaming system |
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| CN108422616A CN108422616A (en) | 2018-08-21 |
| CN108422616B true CN108422616B (en) | 2020-01-07 |
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| CN109318422B (en) * | 2018-09-03 | 2021-03-02 | 嘉善欣达胶业有限公司 | Flocking glue foaming device |
| CN111483105B (en) * | 2020-04-23 | 2021-09-24 | 合肥荣丰包装制品有限公司 | EPS foam material forming device and process |
| CN113601113B (en) * | 2021-08-05 | 2022-05-27 | 冷联科技(南京)有限公司 | Preparation method and preparation device of energy storage plate |
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| JP6295440B2 (en) * | 2015-07-30 | 2018-03-20 | 有限会社三宝金型製作所 | Mold for foamed resin moldings |
| CN106042252B (en) * | 2016-07-04 | 2018-11-09 | 安徽斯威达建材科技有限公司 | A kind of full-automatic foam prefoaming machine |
| CN107803966A (en) * | 2017-11-06 | 2018-03-16 | 无锡龙博机械有限公司 | A kind of polyurethane foaming machine for rolling screen door processing |
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