Foamed plastic cooling circulation device

Abstract

To provide a cooling circulation device for continuously cooling steam when a foamed plastic product is manufactured.SOLUTION: A foamed plastic cooling circulation device includes a mold cooling chamber, a mold cooling assembly, a steam recovery assembly, a cooling supply return flow assembly, and a first spray mechanism installed in the mold cooling chamber. The mold cooling assembly includes a coolant storage box and a first drive source, where a mold cooling pipe is communicated to the coolant storage box and one end of the mold cooling pipe is communicated to a first spray mechanism. The steam recovery assembly includes a cooling tank and a water storage box, where a steam recovery pipe is communicated to the cooling tank and one end of the steam recovery pipe is communicated to the mold cooling chamber, the cooling tank, a residual liquid discharge pipe, and the coolant storage box are communicated to the water storage box. The cooling supply return flow assembly includes a second drive source, a third drive source, and a plurality of chillers. The cooling supply return flow assembly can replenish flesh coolant into the cooling tank continuously and satisfies a requirement of continuously cooling steam when a foamed plastic product is manufactured.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application relates to the technical field of cooling water recovery, and more particularly to foam plastic cooling circulation systems. [Background technology]

[0002] Foamed plastics are polymeric materials formed by dispersing a large number of fine bubbles within a solid plastic. They possess properties such as heat retention, insulation, vibration damping, and lightweight construction. Their dielectric properties are superior to those of matrix resins, making them widely used in industries such as home appliance packaging, cold chain logistics, and building walls. Depending on the type of foamed plastic, the appropriate raw materials are prepared. The raw materials are then placed in a pre-foaming machine, where they are expanded under heat and pressure to form pre-foamed beads. These pre-foamed beads are then filled into a mold in an automatic foam molding machine. The shape and dimensions of the mold determine the appearance and dimensions of the final foamed plastic product. The mold filled with the pre-foamed beads is then placed in a heating device such as a steam heating chamber or an electric oven. During the heating process, the pre-foamed beads further expand and fuse to form a foamed plastic with the desired shape and dimensions. After heating and molding, the mold is cooled by water or air. During the cooling process, the foamed plastic hardens and stabilizes its shape. Finally, the foamed plastic is demolded.

[0003] In daily production, molds are generally cooled using contact water cooling, where cooling water is sprayed directly onto the mold surface. The cooling water absorbs heat and rapidly evaporates, carrying away the heat from the mold and achieving a cooling effect. Generally, the water vapor generated during cooling is cooled using a cooling device. While cooling water is typically pumped into the cooling device to cool the water vapor, over long periods of use, the temperature of the cooling water in the cooling device gradually increases, making it difficult to meet the requirement of continuously cooling the water vapor during the production of foamed plastic products. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a foam plastic cooling circulation device to meet the requirement of continuously cooling water vapor during the production of foam plastic products. [Means for solving the problem]

[0005] The foam plastic cooling circulation device of the present application is a mold cooling chamber used to place a mold, the mold cooling chamber being provided with a first spray mechanism and having a residual liquid discharge pipe communicating with the mold cooling chamber; a mold cooling assembly including a coolant storage box and a first driving source, wherein a mold cooling pipe is connected to the coolant storage box, one end of the mold cooling pipe is connected to the first spray mechanism, and the first driving source is used to drive the liquid in the mold cooling pipe to flow to the first spray mechanism; a steam recovery assembly including a cooling tank for cooling steam and a water storage box for collecting cooling water, wherein a steam recovery pipe is connected to the cooling tank, one end of the steam recovery pipe is connected to a mold cooling chamber, and the cooling tank, the residual liquid discharge pipe and the cooling liquid storage box are all connected to the water storage box; a second driving source, a third driving source, and a cooling supply / return assembly including a plurality of coolers for cooling the liquid in the water storage box, the coolers including a cooling inlet and a cooling outlet, the cooling outlet of one cooler communicating with the cooling inlet of an adjacent cooler, the water storage box communicating with one of the cooling inlets and one of the cooling outlets communicating with the cooling tank, the second driving source being used to drive the liquid in the water storage box toward the coolers, and the third driving source being used to drive the liquid discharged from the cooling outlets to move into the cooling tank. [Effects of the Invention]

[0006] By adopting the above technical solution, the first driving source drives the cooling water in the cooling liquid storage box to flow along the mold cooling pipe into the first spray mechanism, the first spray mechanism sprays cooling water onto the mold to cool it, the cooling water absorbs heat after contact with the high-temperature mold and evaporates into steam, the steam flows along the steam recovery pipe into the cooling tank, the steam is cooled and liquefied in the cooling tank, and then flows into the water storage box, and the cooling water that does not evaporate after entering the mold cooling chamber flows along the residual liquid discharge pipe into the water storage box, thereby realizing cooling water recovery. The water collected in the water storage box is at a high temperature, and the water in the water storage box is flowed into multiple coolers in sequence by the action of the second driving source to cool it, and finally flows into the cooling tank by the action of the third driving source, cooling the steam that has entered the cooling tank, thereby realizing cooling water circulation. In addition, part of the water collected in the water storage box flows into the coolant storage box and replenishes the coolant storage box with coolant. During the coolant circulation process, the used coolant is collected in the water storage box, and the coolant supply and return assembly continuously replenishes the coolant tank with new coolant, thereby meeting the requirement of continuously cooling water vapor during the production of foamed plastic products.

[0007] According to the present invention, the first driving source drives the cooling water in the cooling liquid storage box to move into the pressure tank. When the cooling water in the pressure tank reaches a sufficient level, the first driving source can be turned off, and compressed gas is sent into the pressure tank through the intake pipe, increasing the pressure in the pressure tank and driving the cooling water in the pressure tank to flow into the mold cooling chamber. By intermittently sending compressed gas into the pressure tank through the intake pipe, intermittent cooling of the mold can be achieved. This eliminates the need to constantly turn the first driving source on and off, reducing damage to the first driving source.

[0008] The cooling water discharged from the cooling outlet of the present invention is sent along the second spray pipe into the second spray mechanism, and is sprayed onto the liquid distribution filler by the second spray mechanism, so that the cooling water can be uniformly distributed within the cooling tank, and the steam recovered in the steam recovery pipe flows from bottom to top after being discharged into the tank body, and when the steam reaches the liquid distribution filler, it comes into contact with the cooling water and condenses, thereby realizing the liquefaction of the steam.

[0009] In this application, the heated cooling water obtained in the cooling tank and the water obtained by steam liquefaction are both discharged into the collecting chamber, and part of the water in the collecting chamber is distributed into the first supply chamber to replenish the cooling water in the cooling liquid storage box, and the other water in the collecting chamber is distributed into the second supply chamber, and enters each cooler sequentially along the cooling inlet to be cooled.

[0010] According to the technical solution of the present application, the communication / blocking between the first liquid supply chamber and the liquid collection chamber is controlled by the first opening / closing member, thereby controlling the water level in the first liquid supply chamber within a set range, and the water in the liquid collection chamber flows into the second liquid supply chamber through the first overflow port, thereby achieving diversion of the liquid in the liquid collection chamber.

[0011] In the present application, the driving member drives the room temperature air at the heat exchange inlet point to enter the cooling tower body, and the room temperature air exchanges heat with the heated cooling water that has entered the cooling tower body, cooling the heated cooling water and obtaining room temperature cooling water.

[0012]

[0003] When the heat exchange return assembly of the present application is in operation, room-temperature air flows along the intake passage to the heat exchange inlet of one cooling tower, passes through the heat absorption port in the cooling tower, and then flows from the heat exchange outlet of the cooling tower to the heat exchange inlet of another cooling tower, absorbing heat sequentially through each cooling tower to finally obtain high-temperature air, which finally flows through the heat exchange outlet into the air distribution assembly and is blown onto the mold surface in the mold cooling chamber by the air distribution assembly to blow off residual water adhering to the mold sidewall, ensuring the mold pre-heating temperature, reducing the temperature difference with the heat source during the next mold heating and reducing the probability of mold damage. The cooling water temperature in the cooling tower connected to the cooling tank is low and the cooling water temperature in the cooling tower connected to the water storage box is high, and the room-temperature air flows along the cooling tower connected to the cooling tank and then through the other cooling towers, and finally flows out of the mold cooling chamber along the cooling tower connected to the water storage box, achieving multi-stage heating and improving the heat absorption efficiency of the air.

[0013] In this application, multiple cooling tanks are provided, and adjacent cooling tanks are connected to each other. Steam discharged from the mold cooling chamber flows through a steam recovery pipe into one cooling tank and then into other cooling tanks in sequence, achieving multi-stage cooling. One cooling tank is connected to a vacuum pump. On the one hand, the vacuum pump is used to drive the gas in the mold cooling chamber to flow into the cooling tank. On the other hand, during the mold cooling process, the vacuum pump indirectly draws a vacuum inside the mold cooling chamber through the cooling tank, creating a vacuum environment inside the mold cooling chamber and lowering the boiling point of the cooling water in the mold cooling chamber, which helps the cooling water evaporate.

[0014] According to the present application, the connection / blocking between the first liquid supply chamber and the liquid collection chamber is controlled by a float switch, and when the water level in the first liquid supply chamber drops to a predetermined liquid level, the float switch can automatically turn on, connecting the liquid collection chamber and the first liquid supply chamber and refilling the first liquid supply chamber with cooling water, thereby realizing an automatic liquid replenishment function.

[0015] The pressure gauge of the present invention detects the strength of the pressure inside the pressure tank in real time, making it easy for the operator to observe changes in the strength of the pressure inside the pressure tank using the pressure gauge, thereby improving work safety.

[0016] Since the cooling water in this application is used for internal circulation throughout the entire foam plastic cooling circulation device, the cooling water sprayed onto the mold by the first spray mechanism is less likely to come into contact with impurities, and scale is less likely to form during the mold cooling process. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of the overall structure of Example 1 of the present application. [Figure 2] 1 is a schematic diagram of the structure of a mold cooling assembly according to Example 1 of the present application. [Figure 3] 1 is a schematic diagram of the structure of a vapor recovery assembly according to Example 1 of the present application. [Figure 4] 1 is a schematic diagram of the structure of a water storage box according to a first embodiment of the present invention. [Figure 5] 1 is a schematic diagram of the structure of the coolant storage box according to the first embodiment of the present invention; [Figure 6] 1 is a schematic diagram of the structure of a cooling supply and return assembly according to Example 1 of the present application. FIG. [Figure 7] FIG. 1 is a schematic diagram of the overall structure of Example 2 of the present application. [Figure 8] FIG. 10 is a schematic diagram of the structure of a mold cooling chamber according to a second embodiment of the present invention. [Figure 9] FIG. 1 is a schematic diagram of the structure of a cooling supply and return assembly according to Example 2 of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0018] The present application will be described in more detail below in conjunction with FIGS. Example 1

[0019] Example 1 of the present application provides a foam plastic cooling circulation device.

[0020] 1 and 2, the foam plastic cooling circulation device includes a mold cooling chamber 1, a mold cooling assembly 3, a vapor recovery assembly 4, and a cooling supply / return assembly 5. A first spray mechanism 2 is fixed in the mold cooling chamber 1. The first spray mechanism 2 includes a first spray pipe 21 and a plurality of spray heads 22 connected to one side of the first spray pipe 21. In this embodiment, the first spray pipe 21 is inserted into the mold 8, which is located within the mold cooling chamber 1. In other embodiments, the first spray pipe 21 may be located on one side of the mold 8. The mold cooling chamber 1 is specifically shaped like a hollow rectangular box with one end open, and a cover (not shown) is hingedly connected to the opening of the mold cooling chamber 1. The opening of the mold cooling chamber 1 can be opened and closed by rotating the cover, facilitating the placement of the mold 8 in the mold cooling chamber 1. The mold cooling chamber 1 may be used alone or may be attached to an automatic foam molding machine for use in combination with the automatic foam molding machine.

[0021] 2, the mold cooling assembly 3 includes a coolant storage box 31, a first driving source 32, and a pressure tank 35. A mold cooling pipe 33 is connected to the bottom of the coolant storage box 31, and a first driving source 32 is provided at one end of the mold cooling pipe 33. In this embodiment, the first driving source 32 is specifically provided as a first water pump connected to the mold cooling pipe 33. A liquid supply pipe 355 is connected to the bottom of the pressure tank 35, and one end of the mold cooling pipe 33 remote from the first water pump is connected to the liquid supply pipe 355. A first check valve 331 is connected to a pipe section of the mold cooling pipe 33 close to the liquid supply pipe 355. When the first water pump is activated, the installation of the first check valve 331 allows the cooling water in the mold cooling pipe 33 to flow only toward the pressure tank 35. However, the cooling water in the mold cooling pipe 33 is specifically high-temperature cooling water, and the temperature range of the high-temperature cooling water is 75 to 80°C. A first water level detector 36, which in this embodiment is a side-mounted magnetic flap level gauge, is further fixed to the pressure tank 35. When the first water level detector 36 detects that the water level in the pressure tank 35 is higher than a predetermined maximum value, it turns off the first water pump and stops supplying water to the pressure tank 35. When the first water level detector 36 detects that the water level in the pressure tank 35 is lower than a predetermined minimum value, it starts the first water pump and supplies water to the pressure tank 35.

[0022] 2, one end of the liquid supply pipe 355 remote from the pressure tank 35 is inserted into the mold cooling chamber 1 and communicates with the first spray pipe 21. A first on-off valve 356 is further attached to the end of the liquid supply pipe 355 remote from the pressure tank 35, and the first on-off valve 356 can control the connection and disconnection between the liquid supply pipe 355 and the first spray pipe 21. A second check valve 357 communicates with the portion of the liquid supply pipe 355 closer to the pressure tank 35. A liquid injection branch pipe 37 is provided on one end of the liquid supply pipe 355, and both ends of the liquid injection branch pipe 37 are connected to the liquid supply pipe 355, and both ends of the liquid injection branch pipe 37 are located on either side of the second check valve 357, so that the mold cooling pipe 33 can be indirectly connected to the liquid injection branch pipe 37 via the liquid supply pipe 355. An intake pipe 351 is connected to the end of the pressure tank 35 and is used to introduce external compressed gas into the intake pipe 351. A flow-control air valve 352 is attached to the intake pipe 351. When the mold 8 needs to be cooled, the flow-control air valve 352 is turned on to allow compressed gas to enter the pressure tank 35, increasing the pressure inside the pressure tank 35 and forcing the high-temperature cooling water in the pressure tank 35 to flow along the liquid supply pipe 355 to the first spray pipe 21. The installation of the second check valve 357 and the first check valve 331 prevents the high-temperature cooling water discharged along the liquid supply pipe 355 from flowing into the mold cooling pipe 33. The water discharged along the mold cooling pipe 33 flows into one side of the liquid supply pipe 355, then flows along the liquid injection branch pipe 37 to the other side of the liquid supply pipe 355, and finally flows into the pressure tank 35 via the liquid supply pipe 355 to supply water to the pressure tank 35. A pressure gauge 353 is fixed to the top of the pressure tank 35, and the pressure gauge 353 detects the strength of the pressure inside the pressure tank 35 in real time, making it easy for the operator to observe changes in the strength of the pressure inside the pressure tank 35 using the pressure gauge 353, thereby improving work safety.

[0023] 2, a residual liquid discharge pipe 34 is connected to the bottom of the mold cooling chamber 1, and a second on-off valve 341 is attached to the residual liquid discharge pipe 34. When the first spray mechanism 2 sprays and cools the mold 8, excess cooling liquid can be discharged along the residual liquid discharge pipe 34.

[0024] 1 and 3, the vapor recovery assembly 4 includes a cooling tank 41 and a water storage box 43 communicating with the cooling tank 41. A plurality of cooling tanks 41 are provided at intervals, and in this embodiment, two cooling tanks 41 are provided at intervals. The cooling tank 41 includes a tank body 411, a liquid distribution filler 412, and a second spray mechanism 413 provided in the tank body 411, the second spray mechanism 413 being located above the liquid distribution filler 412. The second spray mechanism 413 includes a second spray pipe 4131 and a spray head 4132 connected to the second spray pipe 4131, and the second spray pipe 4131 is fixed within the tank body 411. In this embodiment, the liquid distribution filler 412 is specifically provided as a PVC (polyvinyl chloride) honeycomb material. A vapor recovery pipe 42 is connected to a tank body 411 provided adjacent to the pressure tank 35, and the connection between the vapor recovery pipe 42 and the tank body 411 is located below the liquid distribution filler 412. During cooling, the end of the vapor recovery pipe 42 remote from the tank body 411 is connected to the mold 8. A transfer air pipe 44 is connected between two adjacent tank bodies 411, and the connection between the transfer air pipe 44 and the tank body 411 provided adjacent to the pressure tank 35 is located above the liquid distribution filler 412, and the connection between the transfer air pipe 44 and the tank body 411 provided away from the pressure tank 35 is located below the liquid distribution filler 412. A vacuum pump 45 is connected to the tank body 411 provided away from the pressure tank 35, and when the vacuum pump 45 is started, the vapor generated in the mold cooling chamber 1 is moved into the vapor recovery pipe 42 and driven to flow sequentially through the two cooling tanks 41 along the vapor recovery pipe 42. When recovering steam, the second spray mechanism 413 is activated to spray cooling water into the tank body 411, causing the steam to enter the two tank bodies 411 sequentially and condense, and both the high-temperature cooling water obtained after the steam condenses and the original cooling water sprayed into the tank body 411 remain in the tank body 411.

[0025] 3 and 4, the water storage box 43 is specifically formed in the shape of a hollow rectangle with one end open, and two partition plates 434 are fixed at a distance within the water storage box 43. The two partition plates 434 divide the water storage box 43 into a liquid collection chamber 431, a first liquid supply chamber 432, and a second liquid supply chamber 433, and the liquid collection chamber 431 is located between the first liquid supply chamber 432 and the second liquid supply chamber 433. A first opening / closing member is fixed to the inner wall of the first liquid supply chamber 432, and the first opening / closing member is specifically formed as a float switch 7, and the float switch is fixed to the partition plate 434 between the first liquid supply chamber 432 and the liquid collection chamber 431. The float switch 7 includes a float 71, which is located within the first liquid supply chamber 432. When the water level in the first liquid supply chamber 432 drops to a predetermined level, the float 71 drops along with the drop in the water level, turning on the float switch 7, connecting the liquid collection chamber 431 to the first liquid supply chamber 432, and causing the liquid collection chamber 431 to replenish the first liquid supply chamber 432 with high-temperature cooling water, thereby realizing an automatic liquid replenishment function.

[0026] 3 and 4, a first connector 435 is fixed to the outer wall of the water storage box 43, and the first connector 435 communicates with the first liquid supply chamber 432. One end of the residual liquid discharge pipe 34 remote from the mold cooling chamber 1 is connected to the first connector 435. A first filter net 436 is fixed to the middle of the first liquid supply chamber 432, and the first filter net 436 separates the first liquid supply chamber 432. A liquid refill pipe 46 also communicates with the first liquid supply chamber 432, and is located on the side of the first filter net 436 remote from the first connector 435. One end of the liquid refill pipe 46 extends outward to the coolant storage box 31 and communicates with the coolant storage box 31. A fourth driving source is connected to a pipe portion of the liquid refill pipe 46 located outside the first liquid supply chamber 432, and the fourth driving source is specifically provided as a fourth water pump 47. When the fourth water pump 47 is started, the water discharged along the residual liquid discharge pipe 34 is filtered by the first filter screen 436 and then flows into the liquid coolant storage box 31 together with the existing cooling water in the first liquid supply chamber 432, thereby replenishing the liquid coolant storage box 31 with liquid.

[0027] 2 and 4, a second water level detector 38 is fixed to the side wall of the coolant storage box 31. In this embodiment, the second water level detector 38 is implemented as a side-mounted magnetic flap level gauge. If the second water level detector 38 detects that the water level in the coolant storage box 31 is higher than a predetermined maximum value, it turns off the fourth water pump 47 to stop water supply to the coolant storage box 31. If the second water level detector 38 detects that the water level in the coolant storage box 31 is lower than a predetermined minimum value, it starts the fourth water pump 47 to supply water to the coolant storage box 31 in a timely manner.

[0028] 2 and 5, a second filter net 313 is fixed inside the coolant storage box 31, and the second filter net 313 divides the interior of the coolant storage box 31 into two sections. A liquid refill connector 311 and a liquid supply connector 312 are connected to the outer wall of the coolant storage box 31, with the liquid refill connector 311 adjacent to the top of the coolant storage box 31 and the liquid supply connector 312 adjacent to the bottom of the coolant storage box 31, and the liquid refill connector 311 and the liquid supply connector 312 are respectively located on both sides of the second filter net 313. The mold cooling pipe 33 communicates with the coolant storage box 31 via the liquid supply connector 312, and the liquid refill pipe 46 communicates with the coolant storage box 31 via the liquid refill connector 311.

[0029] 4, a second connector 437 is further fixed to the outer wall of the water storage box 43, and the second connector and the first connector 435 are located on the same side. One end of the second connector 437 is connected to the liquid collection chamber 431, and the end of the residual liquid discharge pipe 34 remote from the mold cooling chamber 1 is connected to the second connector 437, so that excess cooling liquid is collected into the liquid collection chamber 431 through the residual liquid discharge port. A third filter net 438 is fixed to the middle of the liquid collection chamber 431 and separates the liquid collection chamber 431. Since the communication point between the liquid collection chamber 431 and the first liquid supply chamber 432 is located on the side of the third filter net 438 remote from the second connector 437, high-temperature cooling water that has entered the liquid collection chamber 431 can only flow into the first liquid supply chamber 432 after being filtered by the third filter net 438. A first overflow port 4341 is further formed on the inner wall of the liquid collection chamber 431, and the first overflow port 4341 is formed in the partition plate 434, and is located on the side of the third filtration screen 438 away from the second connector 437. When the water level in the liquid collection chamber 431 exceeds the first overflow port 4341, the water in the liquid collection chamber 431 flows into the second liquid supply chamber 433 through the first overflow port 4341, thereby realizing the separation of the liquid in the liquid collection chamber 431.

[0030] 3, a liquid return pipe 48 is provided below the tank body 411, and the bottoms of both tank bodies 411 are connected to the liquid return pipe 48. One end of the liquid return pipe 48 extends into and communicates with the liquid collection chamber 431, and the liquid return pipe 48 is located on the side of the third filtration screen 438 away from the second connector 437. A fifth water pump 49 is connected to the liquid return pipe 48, and a third water level detector 414 is fixed to the side wall of one of the tank bodies 411 to monitor the water level in the tank body 411 in real time. The fifth water pump 49 is turned on and off based on water level data detected by the third water level detector 414. The fifth water pump 49 can be started to drive the water remaining in the tank body 411 to flow into the liquid collection chamber 431. A third check valve 481 is further connected to the pipe portion of the liquid return pipe 48, and the third check valve is located on the side of the fifth water pump 49 closer to the water storage box 43, making it difficult for water in the liquid collection chamber 431 to flow along the liquid return pipe 48 into the tank body 411.

[0031] 6 , the cooling supply / return assembly 5 includes a second driving source 51, a third driving source 52, and a plurality of coolers. The coolers are specifically configured as a cooling tower 53. The cooling tower includes a cooling tower body 531, a driving member 59, and a third spray mechanism 532 installed within the cooling tower body 531. The cooling tower body 531 is provided with a cooling inlet and a cooling outlet. The third spray mechanism 532 includes a liquid distribution pipe 5321 and a discharge head 5322 connected to the liquid distribution pipe 5321, and a plurality of discharge heads 5322 are installed at intervals on the liquid distribution pipe 5321. One end of the liquid distribution pipe 5321 penetrates the cooling tower body 531 and has an opening therethrough, which serves as a cooling inlet. A cooling outlet is opened at the bottom of the cooling tower body 531, and a liquid discharge pipe 533 is connected to the cooling outlet. The cooling tower 53 further includes a cooling water tank 54 provided below the cooling tower body 531, and one end of the liquid discharge pipe 533 remote from the cooling tower body 531 communicates with the cooling water tank 54. In this embodiment, specifically, two cooling tower bodies 531 are provided: a first cooling tower body and a second cooling tower body. Correspondingly, two cooling water tanks 54 are provided: a primary cooling water tank and a secondary cooling water tank. The first cooling tower body corresponds to the primary cooling water tank, and the second cooling tower body corresponds to the secondary cooling water tank.

[0032] 2 and 6, a cooling liquid injection pipe 534 is connected to the cooling inlet of the first cooling tower body, and the other end of the cooling liquid injection pipe 534 extends into the second liquid supply chamber 433. The second driving source 51 is specifically provided as a second water pump, which is connected to the cooling liquid injection pipe 534. When the second driving source 51 is activated, water in the second liquid supply pipe flows into the first cooling tower body, driving the water in the second liquid supply chamber 433 to perform a first temperature reduction process. The water after the first temperature reduction process flows into the primary cooling water tank along the liquid discharge pipe 533. A fourth water level detector 57 is fixed to one side of the water storage box 43 and is used to monitor the water level of the second liquid supply chamber 433 in real time. The second water pump is turned on and off based on the water level data detected by the fourth water level detector 57. In this embodiment, the fourth water level detector 57 is specifically provided as a side-mounted magnetic flap level gauge.

[0033] Referring to Figure 6, a secondary cooling pipe 535 is connected to the bottom of the primary cooling water tank, and the other end of the secondary cooling pipe 535 is connected to the cooling inlet of the second cooling tower body. A sixth water pump 9 is connected to the inside of the secondary cooling pipe 535, so that water cooled the first time flows back into the second cooling tower body and is cooled a second time, and the water cooled the second time finally flows into the secondary cooling water tank. A fifth water level detector 58 is fixed to one side of the primary cooling water tank and is used to monitor the water level in the primary cooling water tank in real time. The on / off of the sixth water pump 9 is controlled based on the water level data detected by the fifth water level detector 58.

[0034] 3 and 6, a cooling water supply pipe 536 is connected to the bottom of the secondary cooling water tank, and one end of the cooling water supply pipe 536 away from the secondary cooling water tank is connected to both second spray mechanisms 413. The third driving source 52 is specifically provided as a third water pump, which is connected to a pipe portion of the cooling water supply pipe 536. When the third water pump is activated, it transports the twice-cooled water in the secondary cooling water tank into the second spray mechanism 413, providing cooling water to lower the temperature of the cooling tank 41. An overflow pipe 541 is connected between the primary cooling water tanks, and a second overflow port 542 is further opened in the side wall of the secondary cooling water tank. When the water level in the secondary cooling water tank exceeds a predetermined value, the water may flow into the primary cooling water tank or be discharged along the second overflow port 542.

[0035] In another embodiment, the cooling water tank 54 may not be provided, and the cooling outlet of the first cooling tower body may be directly connected to the cooling inlet of the second cooling tower body.

[0036] The operating principle of the foam plastic cooling circulation system of this embodiment is as follows: The vacuum pump 45 is activated to draw a vacuum inside the mold cooling chamber 1, and the flow control air valve 352 is activated to drive the high-temperature cooling water in the pressure tank 35 into the first spray mechanism 2. The first spray mechanism 2 sprays the high-temperature cooling water onto the surface of the mold 8 to cool it. After contacting the high-temperature mold 8, the high-temperature cooling water is heated and vaporizes into steam (the temperature of the high-temperature cooling water is lower than that of the high-temperature mold). The steam flows along the vapor recovery pipe 42 into the cooling tank 41. At the same time, the third water pump is activated to transport the cooling water obtained by the second cooling process into the second spray mechanism 413, which cools the steam that has entered the cooling tank 41. The steam cools and liquefies in the cooling tank 41, and remains in the cooling tank 41. The high-temperature cooling water that does not vaporize after entering the mold cooling chamber 1 flows along the residual liquid discharge pipe 34 into the first liquid supply chamber 432, recovering the high-temperature cooling water. The water in the second liquid supply chamber 433 of the water storage box 43 flows sequentially into the first cooling tower body and the second cooling tower body by the action of the second water pump, and the cooled water obtained after two temperature reductions finally flows into the secondary cooling water tank. The water in the secondary cooling water tank also flows into the cooling tank 41 by the action of the third water pump, the water in the first liquid supply chamber 432 of the water storage box 43 is transported into the coolant storage box 31 by the fourth water pump 47, and the cooled water in the coolant storage box 31 flows into the pressure tank 35 by the action of the first water pump, and can be supplied to the pressure tank 35, thereby completing the cooling water circulation. Example 2

[0037] Example 2 of the present application provides a foam plastic cooling circulation device.

[0038] 7 and 8, the differences between Example 2 and Example 1 of the present application are as follows: An air distribution assembly 6 is provided in the mold cooling chamber 1, and the air distribution assembly 6 includes air distribution pipes 61 provided on both sides of the mold 8 and a plurality of blowing heads 62 communicating with the air distribution pipes 61, the plurality of blowing heads 62 being fixed to the air distribution pipes 61 at equal intervals, and the openings of the blowing heads 62 are provided facing downward in the direction approaching the mold 8.

[0039] 8 and 9, the cooling tower 53 further includes a heat exchange inlet and a heat exchange outlet. The heat exchange outlet is opened in the side wall of the lower half of the cooling tower body 531, and the heat exchange outlet is opened at the top of the cooling tower body 531. The driving member 59 is specifically provided as a blower, which is also fixed to the heat exchange outlet. When the blower is activated, it can drive the gas in the cooling tower body 531 to flow from the heat exchange inlet to the heat exchange outlet. An intake passage 537 is connected to the heat exchange inlet of the second cooling tower body, and external room-temperature air can enter the second cooling tower body through the intake passage 537. A hot air discharge pipe 55 is connected to the heat exchange outlet of the second cooling tower body, and one end of the hot air discharge pipe 55 remote from the second cooling tower body is connected to the heat exchange inlet of the first cooling tower body. A heat supply air pipe 56 is connected to the heat exchange outlet of the first cooling tower body, and one end of the heat supply air pipe 56 away from the first cooling tower body extends into the mold cooling chamber 1, and both air distribution pipes 61 located on both sides of the mold 8 are connected to the heat supply air pipe 56.

[0040] 7 and 8, when the cooling of the mold 8 in the mold cooling chamber 1 is completed, the two fans are started, and the room-temperature air flows along the intake passage 537 into the second cooling tower body to absorb heat, then along the hot air exhaust pipe 55 into the first cooling tower body to absorb heat twice, finally obtaining hot air. The hot air flows along the hot supply air pipe 56 into the air distribution pipe 61 and is blown onto the surface of the mold 8 in the mold cooling chamber 1 by the blowing head 62 of the air distribution pipe 61. Blowing the hot air onto the surface of the cooled mold 8 not only blows away any remaining water adhering to the sidewall of the mold 8 but also ensures the residual temperature of the mold 8, reducing the temperature difference between the mold 8 and the heat source during this heating process and reducing the possibility of damage to the mold 8.

[0041] The above are all preferred embodiments of the present application, and do not limit the scope of protection of the present application. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be included within the scope of protection of the present application. [Explanation of symbols]

[0042] 1...mold cooling chamber, 2...first spray mechanism, 21...first spray pipe, 22...spray head, 3...mold cooling assembly, 31...coolant storage box, 311...liquid refill connector, 312...liquid supply connector, 313...second filtration screen, 32...first drive source, 33...mold cooling piping, 331...first check valve, 34...residual liquid discharge pipe, 341...second on-off valve, 35...pressure tank, 351...air intake pipe, 352...flow control air valve, 353...pressure gauge, 354...liquid injection pipe, 355...liquid delivery pipe, 356...first On-off valve, 357...second check valve, 36...first water level detector, 37...liquid injection branch pipe, 38...second water level detector, 4...vapor recovery assembly, 41...cooling tank, 411...tank body, 412...liquid distribution filler, 413...second spray mechanism, 4131...second spray pipe, 4132...spray head, 414...third water level detector, 42...vapor recovery pipe, 43...water storage box, 431...liquid collection chamber, 432...first liquid supply chamber, 433...second liquid supply chamber, 434...partition plate, 4341...second 1 overflow port, 435...first connector, 436...first filtration screen, 437...second connector, 438...third filtration screen, 44...transfer air pipe, 45...vacuum pump, 46...liquid replenishment pipe, 47...fourth water pump, 48...liquid return pipe, 481...third check valve, 49...fifth water pump, 5...cooling supply return assembly, 51...second driving source, 52...third driving source, 53...cooling tower, 531...cooling tower body, 532...third spray mechanism, 5321...liquid distribution pipe, 5322... Discharge head, 533...liquid discharge pipe, 534...cooling liquid injection pipe, 535...secondary cooling supply pipe 536...cooling liquid supply pipe, 537...intake passage, 54...cooling water tank, 541...overflow pipe, 542...second overflow port, 55...hot air discharge pipe, 56...heat supply air pipe, 57...fourth water level detector, 58...fifth water level detector, 59...driving member, 6...air distribution assembly, 61...air distribution piping, 62...blowing head, 7...float switch, 71...float, 8...mold, 9...sixth water pump.

Claims

1. a mold cooling chamber (1) used to place a mold (8), the mold cooling chamber (1) being provided with a first spray mechanism (2) and having a residual liquid discharge pipe communicating with the mold cooling chamber (1); a mold cooling assembly (3) including a cooling liquid storage box (31) and a first driving source (32), wherein a mold cooling pipe (32) is connected to the cooling liquid storage box (31), one end of the mold cooling pipe (33) is connected to the first spray mechanism (2), and the first driving source (32) is used to drive the liquid in the mold cooling pipe (33) to flow to the first spray mechanism (2); a steam recovery assembly (4) including a cooling tank (41) for cooling steam and a water storage box (43) for collecting cooling water, the cooling tank (41) being connected to a steam recovery pipe (42), one end of the steam recovery pipe (42) being connected to a mold cooling chamber (1), the cooling tank (41), the residual liquid discharge pipe (34) and the cooling liquid storage box (31) all being connected to the water storage box (43); a second driving source (51), a third driving source (52), and a cooling supply / return assembly (5) including a plurality of coolers for cooling the liquid in the water storage box (43), the coolers including a cooling inlet and a cooling outlet, the cooling outlet of each cooler communicating with the cooling inlet of an adjacent cooler, the water storage box (43) communicating with one of the cooling inlets and one of the cooling outlets communicating with the cooling tank (41), the second driving source (51) being used to drive the liquid in the water storage box (43) toward the coolers, and the third driving source (52) being used to drive the liquid discharged from the cooling outlet into the cooling tank (41).

2. 2. The foam plastic cooling circulation device according to claim 1, wherein the mold cooling assembly (3) further includes a pressure tank (35), the pressure tank (35) is connected to the cooling liquid storage box (31), an air intake pipe (351) and a liquid supply pipe (355) are connected to the pressure tank (35), one end of the liquid supply pipe (355) is connected to the mold cooling chamber (1), and the first driving source (32) is further used to drive the liquid in the cooling liquid storage box (31) to move into the pressure tank (35).

3. The cooling tank (41) includes a tank body (411), a liquid distribution filler (412) provided in the tank body (411), and a second spray mechanism (413) located above the liquid distribution filler (412); The foam plastic cooling circulation device of claim 2, characterized in that the second spray mechanism (413) includes a second spray pipe (4131), the second spray pipe (4131) is connected to one of the cooling outlets, and the connection point between the vapor recovery pipe (42) and the cooling tank (41) is located below the liquid distribution filler (412).

4. The water reservoir (43) includes a collecting chamber (431), a first supply chamber (432) and a second supply chamber (433), the first supply chamber (432) and the second supply chamber (433) both communicating with the collecting chamber (431); 2. The foam plastic cooling circulation device according to claim 1, wherein the cooling tank (41) is connected to the collecting chamber (431), the first supply chamber (432) is connected to the cooling liquid storage box (31), and the second supply chamber (433) is connected to one of the cooling inlets.

5. The foamed plastic cooling circulation device described in claim 4, characterized in that a first opening and closing member is provided on the inner wall of the first liquid supply chamber (432) and is used to control communication and blocking between the first liquid supply chamber (432) and the liquid collecting chamber (431), and a first overflow port (4341) communicating with the second liquid supply chamber (433) is opened on the inner wall of the liquid collecting chamber (431).

6. 2. The foam plastic cooling circulation device of claim 1, wherein the cooler includes a cooling tower (53), the cooling tower (53) includes a cooling tower body (531), a driving member (59), a heat exchange inlet, and a heat exchange outlet, and the driving member (59) is used to drive the air at the heat exchange inlet to flow toward the heat exchange outlet.

7. a heat exchange outlet of the cooling tower (53) communicates with a heat exchange inlet of an adjacent cooling tower (53), and an intake passage (537) communicates with the heat exchange inlet of the cooling tower (53) that communicates with the cooling tank (41); 7. The foam plastic cooling circulation device according to claim 6, characterized in that an air distribution assembly (6) is provided in the mold cooling chamber (1) and is used to guide airflow to the surface of the mold (8), and the heat exchange outlet of the cooling tower (53) communicating with the water storage box (43) communicates with the air distribution assembly (6).

8. The foamed plastic cooling circulation device according to claim 1, characterized in that a plurality of cooling tanks (41) are provided, adjacent cooling tanks (41) are connected to each other, the vapor recovery pipe (42) is connected to only one of the cooling tanks (41), and a vacuum pump (45) is connected to one of the cooling tanks (41).

9. 6. The foam plastic cooling circulation device according to claim 5, wherein the first opening and closing member includes a float switch (7).

10. 3. The foamed plastic cooling circulation device according to claim 2, wherein the pressure tank (35) is provided with a pressure gauge (353) used to detect the air pressure inside the pressure tank (35).

Images