Vacuum cooling device for foam forming

Abstract

The invention relates to the technical field of foam forming equipment, in particular to a vacuum cooling device for foam forming. The vacuum cooling device for foam forming comprises a supporting assembly, a cooling mechanism, a vacuum assembly and a separating mechanism, the supporting assembly is placed on the ground, and the separating mechanism comprises a separating assembly, a filter screen assembly, a knocking mechanism and an auxiliary scraping mechanism. The cooling mechanism is used for cooling the high-temperature mixed gas and preventing the vacuum assembly from being damaged due to overheating, the vacuum assembly can extract the high-temperature mixed gas in the plastic foam forming machine and prevent plastic foam holes from being broken and combined, meanwhile, the distribution uniformity of the plastic foam holes is improved, and the forming period of the plastic foam can be shortened. The separation assembly can separate moisture in mixed gas, the filter screen assembly can filter harmful impurities in the mixed gas, and the knocking mechanism can dredge the filter screen assembly when the filter screen assembly is blocked, so that the cleaning time of a filter screen is prolonged, and the workload of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of foam molding equipment, in particular to a vacuum cooling device for foam molding. Background Art

[0002] Vacuum cooling device for foam molding is a device used in the foam molding process to accelerate cooling by creating a vacuum environment. It mainly utilizes the principle of heat transfer and phase change of materials under vacuum state to help foam plastics to form quickly and obtain good cell structure and physical properties.

[0003] During the foaming process of foam plastics, if there is water, it will vaporize when the temperature rises. The water vapor generated by water vaporization will cause the pressure in the pores to increase sharply. When the foaming reaction is in progress, the pressure generated by water vaporization may exceed the bearing capacity of the pore wall, causing the pores to rupture. A uniform and complete pore structure is the key to the good performance of foam plastics. Broken pores will make the density of foam plastics uneven and reduce mechanical properties. The presence of water will interfere with the foaming effect of the foaming agent. Since the process of water vaporization and the generation of gas by the foaming agent is carried out at the same time, the gas distribution will be uneven, which will affect the size and distribution of the pores. At the current stage of foam molding, a vacuum cooling device is used to remove water and cool down. The gas discharged by the vacuum cooling device has a high content of harmful impurities and cannot be discharged directly, and the processing steps are complicated. Summary of the invention

[0004] Based on this, it is necessary to provide a vacuum cooling device for foam molding to solve at least one of the above technical problems.

[0005] A vacuum cooling device for foam molding comprises a supporting assembly, a cooling mechanism, a vacuum assembly and a separating mechanism. The supporting assembly is placed on the ground. The cooling mechanism, the vacuum assembly and the separating mechanism are all installed inside the supporting assembly. One end of the cooling mechanism is connected to one end of the vacuum assembly. The other end of the cooling mechanism is connected to a plastic foam molding machine. One end of the separating mechanism is connected to the other end of the vacuum assembly. The separating mechanism comprises a separating assembly, a filter assembly, a knocking mechanism and an auxiliary scraping mechanism. The separating assembly is connected to the other end of the vacuum assembly. The filter assembly is clamped on the top of the separating assembly. The knocking mechanism is connected to the filter assembly. The auxiliary scraping mechanism is slidably sleeved on the middle of the filter assembly.

[0006] The cooling mechanism is used to cool the high-temperature mixed gas to prevent the vacuum component from overheating and damage. The vacuum component can extract the high-temperature mixed gas in the plastic foam molding machine to prevent the plastic foam cells from breaking and merging, while improving the uniformity of the plastic foam cell distribution and shortening the plastic foam molding cycle. The separation component can separate the moisture in the mixed gas, the filter component can filter the harmful impurities in the mixed gas, and the knocking mechanism can dredge the filter component when it is blocked, thereby extending the filter cleaning time and reducing the workload of the staff.

[0007] In one embodiment, the support assembly includes a support frame and a control panel, the support frame is placed on the ground, and the control panel is installed on a side wall of the support frame.

[0008] In one embodiment, the cooling mechanism includes a water tank, a first circulation pipe, a second circulation pipe, multiple cooling components, an air inlet pipe and an air outlet pipe. The water tank is placed on the ground, one end of the first circulation pipe is connected to one side wall of the water tank, one end of the second circulation pipe is connected to the other side wall of the water tank, multiple cooling components are installed inside the support frame, one end of the air inlet pipe is connected to the plastic foam molding machine, and the other end of the air inlet pipe is fixedly connected to one end of the multiple cooling components, one end of the air outlet pipe is fixedly connected to the other end of the multiple cooling components, and the other end of the air outlet pipe is connected to the vacuum component.

[0009] In one embodiment, each cooling assembly includes a circulation pipe, a cooling pipe, a water inlet pipe, a water outlet pipe, an air inlet valve and an air outlet valve, one end of the circulation pipe is connected to the other end of the air inlet pipe, and the other end of the circulation pipe is connected to one end of the air outlet pipe, the cooling pipe is installed on the support frame, and the cooling pipe is sleeved in the middle of the circulation pipe, cooling water is contained in the cooling pipe and the water storage tank, one end of the water inlet pipe is connected to one end of the side wall of the cooling pipe, and the other end of the water inlet pipe is connected to the other end of the first circulation pipe, one end of the water outlet pipe is connected to the other end of the side wall of the cooling pipe, and the other end of the water outlet pipe is connected to the other end of the second circulation pipe, the air inlet valve is installed at the top of one end of the circulation pipe, and the air outlet valve is installed at the top of the other end of the circulation pipe.

[0010] In one embodiment, the vacuum assembly includes a vacuum inlet pipe, a vacuum pump and a vacuum outlet pipe, one end of the vacuum inlet pipe is connected to the other end of the outlet pipe, the vacuum pump is installed at the bottom of the support frame, and the vacuum pump is connected to the other end of the vacuum inlet pipe, one end of the vacuum outlet pipe is connected to the vacuum pump, and the other end of the vacuum outlet pipe is connected to the separation assembly.

[0011] In one embodiment, the separation component includes a steam-water separation shell, an air inlet pipe, an exhaust pipe, a drainage piece and a drain pipe. The steam-water separation shell is installed inside a support frame, one end of the air inlet pipe is inserted into the upper side wall of the steam-water separation shell, and the other end of the air inlet pipe is connected to the other end of the vacuum exhaust pipe, the lower end of the exhaust pipe is fixedly inserted into the top of the steam-water separation shell, the drainage piece is installed at the bottom of the steam-water separation shell, and the upper end of the drain pipe is inserted into the bottom of the drainage piece.

[0012] In one embodiment, the filter assembly includes a fixed ring, four telescopic parts, a filter, four clamping blocks, a push ring and four push rods. The fixed ring is connected to the inner wall of the lower end of the exhaust pipe, the upper ends of the four telescopic parts are fixedly connected to the bottom of the fixed ring, the outer wall of the filter abuts the inner wall of the lower end of the exhaust pipe, the lower ends of the four telescopic parts are fixedly connected to the top of the filter, the four clamping blocks are connected to the bottom periphery of the filter, the push ring is fixedly sleeved on the upper end of the filter, the tops of the four push rods are fixedly connected to the bottom of the push ring, and the bottom of the filter is concave.

[0013] In one embodiment, each telescopic member includes an upper sleeve tube, a lower sleeve tube and a spring, the top of the upper sleeve tube is fixedly connected to the bottom of the fixing ring, the bottom of the lower sleeve tube is fixedly connected to the top of the filter screen, the lower end of the upper sleeve tube is slidably sleeved on the upper end of the lower sleeve tube, the spring is accommodated in the lower sleeve tube, and the top of the spring is fixedly connected to the top of the inner wall of the upper sleeve tube, and the bottom of the spring is fixedly connected to the bottom of the inner wall of the lower sleeve tube.

[0014] In one embodiment, a sliding groove is provided at the bottom of the lower end of the exhaust pipe, and four storage grooves are provided at the bottom periphery of the filter screen. The four knocking mechanisms include four knocking components, and the four knocking components are respectively stored in the four storage grooves. Each knocking component includes a shaking rope and a knocking ball made of metal material. The top of the shaking rope is fixedly connected to the top side wall of the storage groove, and the knocking ball is fixedly connected to the bottom of the shaking rope. The shaking rope includes a storage section and a knocking section connected in sequence, the top of the storage section is fixedly connected to the top side wall of the storage groove, and the storage section is stored in the storage groove, the top of the knocking section is fixedly connected to the bottom of the storage section, and the bottom of the knocking section is fixedly connected to the knocking ball.

[0015] In one embodiment, the auxiliary scraping mechanism includes a sliding scraping ring and four auxiliary impact members. The sliding scraping ring is slidably mounted on the middle part of the filter, and the outer wall of the sliding scraping ring abuts against the side wall of the sliding groove. The four auxiliary impact members are respectively installed on the bottom of the sliding scraping ring. Each auxiliary impact member includes a swing rope and a gravity ball made of metal material. The top of the swing rope is fixedly connected to the bottom of the sliding scraping ring, and the gravity ball is fixedly connected to the bottom of the swing rope. The length of the swing rope is longer than the length of the knocking section.

[0016] The present invention provides a vacuum pump which can extract the high-temperature mixed gas inside the plastic foam molding machine to prevent the plastic foam cells from breaking and merging, improve the uniformity of the plastic foam cell distribution, and shorten the molding cycle of the plastic foam.

[0017] By setting up a cooling mechanism, when the high-temperature mixed gas enters the cooling mechanism, the high-temperature mixed gas goes into the opened cooling component, and then enters the separation component through the air inlet pipe, the circulation pipe, the air outlet pipe, the vacuum air inlet pipe, the vacuum pump and the vacuum air outlet pipe. The high-temperature mixed gas is cooled by cooling water in the circulation pipe, and the cooling water circulates and cools in the water storage tank, the water inlet pipe, the cooling pipe and the water outlet pipe.

[0018] By setting up a separation component, the separation component can separate harmful impurities from gas, and the gas filtered by the filter is discharged from the exhaust pipe to prevent harmful substances from being mixed in the mixed gas and affecting the environment or the health of the staff. After the high-temperature mixed gas is cooled and enters the steam-water separation shell, it spirally rotates in the steam-water separation shell, and the heavier impurities and water fall on the top of the drainage piece. The gas passes through the filter and is discharged from the exhaust pipe, and the lighter impurities are attached to the surface of the filter to prevent the lighter impurities from flowing into the atmosphere with the gas, thereby affecting the environment or the health of the staff.

[0019] By setting up the knocking components, the mixed gas can blow the four knocking components to shake, thereby making the knocking section of the shaking rope and the knocking ball shake. While shaking, the knocking ball will knock the side wall and bottom of the filter, causing impurities attached to the surface of the filter to fall off. After the vacuum pump stops, the impurities attached to the surface of the filter fall on the top of the drainage piece, thereby extending the cleaning time of the filter and reducing the workload of the staff.

[0020] By setting a spring, when the impurities on the filter cannot fall off after the knocking ball knocks, the bottom and lower end of the filter are blocked, the weight of the filter increases, the filter moves downward, the lower set pipe moves downward with the filter, the spring stretches, the filtering space of the filter becomes larger, and the filter can continue to filter impurities, extending the cleaning time of the filter and reducing the workload of the staff. As the filter moves downward, the length of the storage section away from the bottom of the exhaust pipe becomes longer, which makes the knocking ball shake more, making the knocking force of the knocking ball greater, making it easier for impurities attached to the surface of the filter to fall off, reducing the impurities attached to the surface of the filter, reducing the weight of the filter, and retracting the spring. The filter moves upward, and the cycle is repeated, extending the cleaning time of the filter and reducing the workload of the staff.

[0021] By setting a sliding scraper ring, when the filter moves downward, the push ring moves downward with the filter, and the four push rods push the sliding scraper ring downward to scrape out impurities attached to the side wall of the filter, thereby extending the cleaning time of the filter and reducing the workload of the staff. After the sliding scraper ring is separated from the sliding groove, the sliding scraper ring moves downward under the gravity of the four auxiliary impact members and is stuck in the block, thereby scraping out impurities attached to the side wall of the filter, thereby extending the cleaning time of the filter and reducing the workload of the staff.

[0022] By setting an auxiliary impact piece, after the sliding scraper ring is clamped in the clamping block, the sliding scraper ring can be clamped at the lower end of the storage section, reducing the swing amplitude of the swing rope, and the four auxiliary impact pieces are detached from the bottom of the exhaust pipe. The swing ropes and gravity balls of the four auxiliary impact pieces can swing under the blowing of the mixed gas, and the swing amplitudes of the swing rope and the knocking section are close, so that the gravity ball can cooperate with the knocking ball to knock on the side wall and bottom of the filter, increasing the impact on the filter, and causing the impurities attached to the filter to fall on the top of the drainage piece, thereby extending the cleaning time of the filter and reducing the workload of the staff.

[0023] The present invention has a simple structure and can well separate harmful impurities and gases, preventing the gas discharged from the exhaust pipe from being mixed with harmful substances and thus affecting the environment or the health of the workers. At the same time, it can clean the filter by itself to a certain extent, prolonging the cleaning time of the filter and reducing the workload of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of an overall embodiment.

[0025] Figure 2 It is a three-dimensional schematic diagram of an overall embodiment from another viewing angle.

[0026] Figure 3 This is a three-dimensional schematic diagram of an embodiment after a portion of the cooling components are removed.

[0027] Figure 4 It is a three-dimensional schematic diagram of a partial separation mechanism of an embodiment.

[0028] Figure 5 It is a cross-sectional schematic diagram of a partial separation mechanism of an embodiment.

[0029] Figure 6 It is a three-dimensional schematic diagram of a filter assembly according to an embodiment.

[0030] Figure 7 It is a three-dimensional schematic diagram of a partially separated component of an embodiment.

[0031] In the figure: 10, support assembly; 11, support frame; 12, control panel; 20, cooling mechanism; 21, water storage tank; 22, second circulation pipe; 23, cooling assembly; 24, air inlet pipe; 25, air outlet pipe; 210, first circulation pipe; 230, circulation pipe; 231, cooling pipe; 232, water inlet pipe; 233, water outlet pipe; 234, air inlet valve; 235, air outlet valve; 30, vacuum assembly; 31, vacuum air inlet pipe; 32, vacuum pump; 33, vacuum air outlet pipe; 40, separation mechanism; 50, separation assembly; 51, steam-water separation shell; 52, inlet Trachea; 53, exhaust pipe; 54, drainage part; 55, drainage pipe; 530, sliding groove; 60, filter assembly; 61, fixing ring; 62, telescopic part; 63, filter; 64, block; 65, push ring; 66, push rod; 620, upper sleeve tube; 621, lower sleeve tube; 630, storage groove; 70, knocking mechanism; 71, knocking assembly; 72, shaking rope; 73, knocking ball; 720, storage section; 721, knocking section; 80, auxiliary scraping mechanism; 81, sliding scraping ring; 82, auxiliary impact part; 83, swinging rope; 84, gravity ball. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] An embodiment provided by the present invention is as follows: Figures 1 to 7As shown, a vacuum cooling device for foam molding includes a support component 10, a cooling mechanism 20, a vacuum component 30 and a separation mechanism 40. The support component 10 is placed on the ground, and the cooling mechanism 20, the vacuum component 30 and the separation mechanism 40 are all installed inside the support component 10, and one end of the cooling mechanism 20 is connected to one end of the vacuum component 30, and the other end of the cooling mechanism 20 is connected to a plastic foam molding machine. One end of the separation mechanism 40 is connected to the other end of the vacuum component 30. The separation mechanism 40 includes a separation component 50, a filter component 60, a knocking mechanism 70 and an auxiliary scraping mechanism 80. The separation component 50 is connected to the other end of the vacuum component 30, the filter component 60 is clamped on the top of the separation component 50, the knocking mechanism 70 is connected to the filter component 60, and the auxiliary scraping mechanism 80 is slidably sleeved on the middle of the filter component 60.

[0036] The cooling mechanism 20 is used to cool the high-temperature mixed gas to prevent the vacuum component 30 from being damaged by overheating. The vacuum component 30 can extract the high-temperature mixed gas in the plastic foam molding machine to prevent the plastic foam cells from breaking and merging, while improving the uniformity of the plastic foam cell distribution and shortening the plastic foam molding cycle. The separation component 50 can separate the moisture in the mixed gas, the filter component 60 can filter the harmful impurities in the mixed gas, and the knocking mechanism 70 can dredge the filter component 60 when the filter component 60 is blocked, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0037] like Figures 1 to 3 As shown, the support assembly 10 includes a support frame 11 and a control panel 12 . The support frame 11 is placed on the ground, and the control panel 12 is installed on the side wall of the support frame 11 .

[0038] like Figures 1 to 3 As shown, the cooling mechanism 20 includes a water tank 21, a first circulation pipe 210, a second circulation pipe 22, a plurality of cooling components 23, an air inlet pipe 24 and an air outlet pipe 25. The water tank 21 is placed on the ground, one end of the first circulation pipe 210 is connected to one side wall of the water tank 21, one end of the second circulation pipe 22 is connected to the other side wall of the water tank 21, a plurality of cooling components 23 are installed inside the support frame 11, one end of the air inlet pipe 24 is connected to the plastic foam molding machine, and the other end of the air inlet pipe 24 is fixedly connected to one end of the plurality of cooling components 23, one end of the air outlet pipe 25 is fixedly connected to the other end of the plurality of cooling components 23, and the other end of the air outlet pipe 25 is connected to the vacuum component 30.

[0039] like Figures 1 to 3As shown, each cooling assembly 23 includes a circulation pipe 230, a cooling pipe 231, a water inlet pipe 232, a water outlet pipe 233, an air inlet valve 234 and an air outlet valve 235. One end of the circulation pipe 230 is connected to the other end of the air inlet pipe 24, and the other end of the circulation pipe 230 is connected to one end of the air outlet pipe 25. The cooling pipe 231 is installed on the support frame 11, and the cooling pipe 231 is sleeved in the middle of the circulation pipe 230. The cooling pipe 231 and the inside of the water storage tank 21 are both Cooling water is stored, one end of the water inlet pipe 232 is connected to one end of the side wall of the cooling pipe 231, and the other end of the water inlet pipe 232 is connected to the other end of the first circulation pipe 210, one end of the water outlet pipe 233 is connected to the other end of the side wall of the cooling pipe 231, and the other end of the water outlet pipe 233 is connected to the other end of the second circulation pipe 22, the air inlet valve 234 is installed at the top of one end of the circulation pipe 230, and the air outlet valve 235 is installed at the top of the other end of the circulation pipe 230.

[0040] like Figures 1 to 3 As shown, the vacuum assembly 30 includes a vacuum inlet pipe 31, a vacuum pump 32 and a vacuum outlet pipe 33. One end of the vacuum inlet pipe 31 is connected to the other end of the outlet pipe 25. The vacuum pump 32 is installed at the bottom of the support frame 11, and the vacuum pump 32 is connected to the other end of the vacuum inlet pipe 31. One end of the vacuum outlet pipe 33 is connected to the vacuum pump 32, and the other end of the vacuum outlet pipe 33 is connected to the separation assembly 50.

[0041] like Figures 1 to 4 As shown, the separation component 50 includes a steam-water separation shell 51, an air inlet pipe 52, an exhaust pipe 53, a drainage piece 54 and a drainage pipe 55. The steam-water separation shell 51 is installed inside the support frame 11, one end of the air inlet pipe 52 is inserted into the upper end side wall of the steam-water separation shell 51, and the other end of the air inlet pipe 52 is connected to the other end of the vacuum outlet pipe 33, the lower end of the exhaust pipe 53 is fixedly inserted into the top of the steam-water separation shell 51, the drainage piece 54 is installed at the bottom of the steam-water separation shell 51, and the upper end of the drainage pipe 55 is inserted into the bottom of the drainage piece 54.

[0042] like Figures 4 to 7As shown, the filter assembly 60 includes a fixing ring 61, four telescopic parts 62, a filter 63, four clamping blocks 64, a push ring 65 and four push rods 66. The fixing ring 61 is connected to the inner wall of the lower end of the exhaust pipe 53, the upper ends of the four telescopic parts 62 are fixedly connected to the bottom of the fixing ring 61, the outer wall of the filter 63 abuts the inner wall of the lower end of the exhaust pipe 53, the lower ends of the four telescopic parts 62 are fixedly connected to the top of the filter 63, the four clamping blocks 64 are connected to the bottom periphery of the filter 63, the push ring 65 is fixedly sleeved on the upper end of the filter 63, the tops of the four push rods 66 are fixedly connected to the bottom of the push ring 65, and the bottom of the filter 63 is concave. The bottom of the filter 63 is concave in shape, so that the bottom of the filter 63 can absorb more impurities, and then the impurities at the bottom of the filter 63 can combine to form larger impurities, and then the larger impurities fall after being knocked, and the mixed gas cannot make the larger impurities float upward, and finally the larger impurities fall on the top of the drain member 54. After the drain member 54 reaches a certain weight, the drain member 54 can be started to discharge the water on the top of the drain member 54 together with the impurities out of the gas-water separation housing 51.

[0043] like Figures 4 to 6 As shown, each telescopic member 62 includes an upper sleeve tube 620, a lower sleeve tube 621 and a spring (not shown in the figure), the top of the upper sleeve tube 620 is fixedly connected to the bottom of the fixing ring 61, the bottom of the lower sleeve tube 621 is fixedly connected to the top of the filter screen 63, the lower end of the upper sleeve tube 620 is slidably sleeved on the upper end of the lower sleeve tube 621, the spring is accommodated in the lower sleeve tube 621, and the top of the spring is fixedly connected to the top of the inner wall of the upper sleeve tube 620, and the bottom of the spring is fixedly connected to the bottom of the inner wall of the lower sleeve tube 621.

[0044] like Figures 4 to 6 As shown, a sliding groove 530 is provided at the bottom of the lower end of the exhaust pipe 53, and four storage grooves 630 are provided at the bottom periphery of the filter screen 63. The four knocking mechanisms 70 include four knocking components 71, and the four knocking components 71 are respectively received in the four storage grooves 630. Each knocking component 71 includes a shaking rope 72 and a knocking ball 73 made of metal material. The top of the shaking rope 72 is fixedly connected to the top side wall of the storage groove 630, and the knocking ball 73 is fixedly connected to the bottom of the shaking rope 72. The shaking rope 72 includes a storage section 720 and a knocking section 721 connected in sequence, the top of the storage section 720 is fixedly connected to the top side wall of the storage groove 630, and the storage section 720 is received in the storage groove 630, the top of the knocking section 721 is fixedly connected to the bottom of the storage section 720, and the bottom of the knocking section 721 is fixedly connected to the knocking ball 73.

[0045] like Figures 5 and 6As shown, the auxiliary scraping mechanism 80 includes a sliding scraping ring 81 and four auxiliary impact members 82. The sliding scraping ring 81 is slidably mounted on the middle part of the filter 63, and the outer wall of the sliding scraping ring 81 abuts against the side wall of the sliding groove 530. The four auxiliary impact members 82 are respectively installed on the bottom of the sliding scraping ring 81. Each auxiliary impact member 82 includes a swing rope 83 and a gravity ball 84 made of metal material. The top of the swing rope 83 is fixedly connected to the bottom of the sliding scraping ring 81, and the gravity ball 84 is fixedly connected to the bottom of the swing rope 83. The length of the swing rope 83 is longer than the length of the knocking section 721.

[0046] During installation: the cooling mechanism 20, vacuum assembly 30 and separation mechanism 40 are all installed inside the support assembly 10, the control panel 12 is installed on the side wall of the support frame 11, the multiple cooling assemblies 23 are all installed inside the support frame 11, and the cooling pipe 231 is installed on the support frame 11. The air inlet valve 234 is installed on the top of one end of the circulation pipe 230, the air outlet valve 235 is installed on the top of the other end of the circulation pipe 230, the vacuum pump 32 is installed on the bottom of the support frame 11, the steam-water separation housing 51 is installed inside the support frame 11, the drainage member 54 is installed on the bottom of the steam-water separation housing 51, and the four auxiliary impact members 82 are respectively installed on the bottom of the sliding scraper ring 81.

[0047] When in use: 1. The vacuum pump 32 extracts the high-temperature mixed gas inside the plastic foam molding machine to prevent the plastic foam cells from breaking and merging. During the foaming process of the foam plastic, the bubbles will continue to expand. Without vacuum cooling measures, as the temperature rises, the gas pressure in the bubbles increases, and the strength of the bubble wall may not be able to withstand it, which can easily lead to bubble rupture. Vacuum cooling can quickly reduce the temperature of the system, reduce the gas pressure in the pores, and thus reduce bubble rupture; at the same time, the vacuum pump 32 can improve the uniformity of the plastic foam pore distribution. In the absence of vacuum cooling, the temperature difference at different positions in the mold may cause uneven decomposition of the foaming agent, and then uneven distribution of the pores. Since heat is more easily dissipated in a vacuum, vacuum cooling can balance the temperature field in the mold to a certain extent.

[0048] 2. The extracted high-temperature mixed gas enters the cooling mechanism 20, and the high-temperature mixed gas enters the opened cooling component 23. The high-temperature mixed gas enters the separation component 50 through the air inlet pipe 24, the circulation pipe 230, the air outlet pipe 25, the vacuum air inlet pipe 31, the vacuum pump 32 and the vacuum air outlet pipe 33. The high-temperature mixed gas is cooled by cooling water in the circulation pipe 230 to prevent the vacuum component 30 from overheating and damage. The cooling water circulates and cools in the water storage tank 21, the water inlet pipe 232, the cooling pipe 231 and the water outlet pipe 233.

[0049] 3. After cooling, the high-temperature mixed gas enters the separation component 50 to separate harmful impurities from the gas. The gas filtered by the filter 63 is discharged from the exhaust pipe 53 to prevent the gas discharged from the exhaust pipe 53 from being mixed with harmful substances and thus affecting the environment or the health of the staff. After cooling, the high-temperature mixed gas enters the steam-water separation housing 51 and spirally rotates in the steam-water separation housing 51. The heavier impurities and water fall on the top of the drainage member 54. The gas passes through the filter 63 and is discharged from the exhaust pipe 53. The lighter impurities adhere to the surface of the filter 63 to prevent the lighter impurities from flowing into the atmosphere with the gas and thus affecting the environment or the health of the staff.

[0050] 4. After the mixed gas flows through the steam-water separation housing 51, the mixed gas will blow the four knocking components 71 to shake, thereby making the knocking section 721 of the shaking rope 72 and the knocking ball 73 shake. While shaking, the knocking ball 73 will knock the side wall and bottom of the filter 63, causing the impurities attached to the surface of the filter 63 to fall off. After the vacuum pump 32 stops, the impurities attached to the surface of the filter 63 fall on the top of the drainage member 54, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff. The smaller impurities that fall after being knocked off will eventually still be attached to the filter 63. The impurities are wet and can be attached to the subsequent wet impurities to form a larger impurity. The larger impurities fall after being knocked off, and the mixed gas cannot make the larger impurities float upward. Finally, the larger impurities fall on the top of the drainage member 54. After the drainage member 54 reaches a certain weight, the drainage member 54 can be started to discharge the water on the top of the drainage member 54 together with the impurities out of the steam-water separation housing 51.

[0051] 5. After the impurities cannot fall off the filter 63 when the knocking ball 73 knocks, the bottom and lower end of the filter 63 are blocked, the weight of the filter 63 increases, the filter 63 moves downward, the lower sleeve pipe 621 moves downward with the filter 63, the spring stretches, the filtering space of the filter 63 becomes larger, and the filter 63 can continue to filter impurities, extending the cleaning time of the filter 63 and reducing the workload of the staff. While the filter 63 moves downward, the length of the storage section 720 away from the bottom of the exhaust pipe 53 becomes longer, which makes the knocking ball 73 shake more, making the knocking force of the knocking ball 73 greater, making it easier for the impurities attached to the surface of the filter 63 to fall off, and the impurities attached to the surface of the filter 63 are reduced. The weight of the filter 63 decreases, the spring retracts, and the filter 63 moves upward, and then the cycle is repeated, extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0052] 6. When the filter 63 moves downward, the push ring 65 moves downward with the filter 63, and the four push rods 66 push the sliding scraper ring 81 downward to scrape out the impurities attached to the side wall of the filter 63, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff. After the sliding scraper ring 81 is separated from the sliding groove 530, the sliding scraper ring 81 moves downward under the gravity of the four auxiliary impact members 82 and is stuck in the block 64, thereby scraping out the impurities attached to the side wall of the filter 63, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0053] 7. After the sliding scraper ring 81 is stuck in the block 64, the sliding scraper ring 81 can be stuck at the lower end of the storage section 720, reducing the swing amplitude of the swing rope 72, and the four auxiliary impact members 82 are separated from the bottom of the exhaust pipe 53. The swing ropes 83 and the gravity balls 84 of the four auxiliary impact members 82 can swing under the blowing of the mixed gas, and the swing amplitudes of the swing rope 83 and the knocking section 721 are close, so that the gravity ball 84 can cooperate with the knocking ball 73 to knock on the side wall and bottom of the filter 63, increasing the impact on the filter 63, and causing the impurities attached to the filter 63 to fall on the top of the drainage member 54, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0054] The present invention provides a vacuum pump 32, which can extract the high-temperature mixed gas inside the plastic foam molding machine to prevent the plastic foam cells from rupturing and merging, while improving the uniformity of the plastic foam cell distribution and shortening the plastic foam molding cycle.

[0055] By setting up the cooling mechanism 20, when the high-temperature mixed gas enters the cooling mechanism 20, the high-temperature mixed gas goes into the opened cooling component 23, and then enters the separation component 50 through the air inlet pipe 24, the circulation pipe 230, the air outlet pipe 25, the vacuum air inlet pipe 31, the vacuum pump 32 and the vacuum air outlet pipe 33. The high-temperature mixed gas is cooled by cooling water in the circulation pipe 230, and the cooling water circulates and cools in the water storage tank 21, the water inlet pipe 232, the cooling pipe 231 and the water outlet pipe 233.

[0056] By setting up the separation assembly 50, the separation assembly 50 can separate harmful impurities from the gas, and the gas filtered by the filter 63 is discharged from the exhaust pipe 53, preventing the mixed gas from being mixed with harmful substances and thus affecting the environment or the health of the staff. After the high-temperature mixed gas after cooling enters the steam-water separation shell 51, it spirally rotates in the steam-water separation shell 51, and the heavy impurities and water fall on the top of the drainage member 54. The gas passes through the filter 63 and is discharged from the exhaust pipe 53, and the light impurities are attached to the surface of the filter 63, preventing the light impurities from flowing into the atmosphere with the gas, thereby affecting the environment or the health of the staff.

[0057] By setting the knocking components 71, the mixed gas can blow the four knocking components 71 to shake, thereby making the knocking section 721 of the shaking rope 72 and the knocking ball 73 shake. While shaking, the knocking ball 73 will knock on the side wall and bottom of the filter 63, so that impurities attached to the surface of the filter 63 fall off. After the vacuum pump 32 stops, the impurities attached to the surface of the filter 63 fall on the top of the drainage component 54, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0058] By setting a spring, after the knocking ball 73 knocks the impurities of the filter screen 63 and the impurities cannot fall off, the bottom and lower end of the filter screen 63 are blocked, the weight of the filter screen 63 increases, the filter screen 63 moves downward, the lower sleeve pipe 621 moves downward with the filter screen 63, the spring stretches, the filtering space of the filter screen 63 becomes larger, and the filter screen 63 can continue to filter impurities, extending the cleaning time of the filter screen 63 and reducing the workload of the staff. While the filter screen 63 moves downward, the length of the storage section 720 away from the bottom of the exhaust pipe 53 becomes longer, and the knocking ball 73 shakes more, making the knocking force of the knocking ball 73 greater, and making the impurities attached to the surface of the filter screen 63 easier to fall off, the impurities attached to the surface of the filter screen 63 are reduced, the weight of the filter screen 63 decreases, the spring retracts, and the filter screen 63 moves upward, and then the cycle is repeated, extending the cleaning time of the filter screen 63 and reducing the workload of the staff.

[0059] By providing the sliding scraper ring 81, when the filter screen 63 moves downward, the push ring 65 moves downward with the filter screen 63, and the four push rods 66 push the sliding scraper ring 81 downward to scrape out the impurities attached to the side wall of the filter screen 63, thereby extending the cleaning time of the filter screen 63 and reducing the workload of the staff. After the sliding scraper ring 81 is separated from the sliding groove 530, the sliding scraper ring 81 moves downward under the gravity of the four auxiliary impact members 82 and is stuck in the block 64, thereby scraping out the impurities attached to the side wall of the filter screen 63, thereby extending the cleaning time of the filter screen 63 and reducing the workload of the staff.

[0060] By setting the auxiliary impact member 82, after the sliding scraper ring 81 is stuck in the block 64, the sliding scraper ring 81 can be stuck at the lower end of the storage section 720, reducing the swing amplitude of the swing rope 72, and the four auxiliary impact members 82 are separated from the bottom of the exhaust pipe 53. The swing ropes 83 and the gravity balls 84 of the four auxiliary impact members 82 can swing under the blowing of the mixed gas, and the swing amplitude of the swing rope 83 is close to that of the knocking section 721, so that the gravity ball 84 can cooperate with the knocking ball 73 to knock on the side wall and bottom of the filter 63, increasing the impact on the filter 63, and causing the impurities attached to the filter 63 to fall on the top of the drainage member 54, thereby extending the cleaning time of the filter 63 and reducing the workload of the staff.

[0061] The present invention has a simple structure and can well separate harmful impurities from gases, preventing the gas discharged from the exhaust pipe 53 from being mixed with harmful substances and thus affecting the environment or the health of the staff. At the same time, it can clean the filter 63 by itself to a certain extent, prolonging the cleaning time of the filter 63 and reducing the workload of the staff.

[0062] All possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A vacuum cooling device for foam molding, characterized in that: The invention comprises a support assembly (10), a cooling mechanism (20), a vacuum assembly (30) and a separation mechanism (40). The support assembly (10) is placed on the ground. The cooling mechanism (20), the vacuum assembly (30) and the separation mechanism (40) are all installed inside the support assembly (10). One end of the cooling mechanism (20) is connected to one end of the vacuum assembly (30). The other end of the cooling mechanism (20) is connected to a plastic foam molding machine. One end of the separation mechanism (40) is connected to the other end of the vacuum assembly (30). The separation mechanism (40) comprises a separation assembly (50), a filter assembly (60), a knocking mechanism (70) and an auxiliary scraping mechanism (80). The separation assembly (50) is connected to the other end of the vacuum assembly (30). The filter assembly (60) is clamped at the top of the separation assembly (50). The knocking mechanism (70) is connected to the filter assembly (60). The auxiliary scraping mechanism (80) is slidably sleeved on the middle of the filter assembly (60).

2. The vacuum cooling device for foam molding according to claim 1, characterized in that: The support assembly (10) comprises a support frame (11) and a control panel (12); the support frame (11) is placed on the ground, and the control panel (12) is installed on the side wall of the support frame (11).

3. The vacuum cooling device for foam molding according to claim 2, characterized in that: The cooling mechanism (20) comprises a water tank (21), a first circulation pipe (210), a second circulation pipe (22), a plurality of cooling components (23), an air inlet pipe (24) and an air outlet pipe (25); the water tank (21) is placed on the ground; one end of the first circulation pipe (210) is connected to one side wall of the water tank (21); one end of the second circulation pipe (22) is connected to the other side wall of the water tank (21); the plurality of cooling components (23) are all installed inside the support frame (11); one end of the air inlet pipe (24) is connected to the plastic foam molding machine; the other end of the air inlet pipe (24) is fixedly connected to one end of the plurality of cooling components (23); one end of the air outlet pipe (25) is fixedly connected to the other end of the plurality of cooling components (23); and the other end of the air outlet pipe (25) is connected to the vacuum component (30).

4. The foam molding vacuum cooling device according to claim 3, characterized in that: Each cooling assembly (23) comprises a circulation pipe (230), a cooling pipe (231), a water inlet pipe (232), a water outlet pipe (233), an air inlet valve (234) and an air outlet valve (235); one end of the circulation pipe (230) is connected to the other end of the air inlet pipe (24), and the other end of the circulation pipe (230) is connected to one end of the air outlet pipe (25); the cooling pipe (231) is mounted on the support frame (11), and the cooling pipe (231) is sleeved on the middle part of the circulation pipe (230); the cooling pipe (231) and the water storage tank (21) are connected to each other. Cooling water is contained inside, one end of the water inlet pipe (232) is connected to one end of the side wall of the cooling pipe (231), and the other end of the water inlet pipe (232) is connected to the other end of the first circulation pipe (210), one end of the water outlet pipe (233) is connected to the other end of the side wall of the cooling pipe (231), and the other end of the water outlet pipe (233) is connected to the other end of the second circulation pipe (22), an air inlet valve (234) is installed at the top of one end of the circulation pipe (230), and an air outlet valve (235) is installed at the top of the other end of the circulation pipe (230).

5. The vacuum cooling device for foam molding according to claim 4, characterized in that: The vacuum assembly (30) comprises a vacuum inlet pipe (31), a vacuum pump (32) and a vacuum outlet pipe (33); one end of the vacuum inlet pipe (31) is connected to the other end of the outlet pipe (25); the vacuum pump (32) is installed at the bottom of the support frame (11); the vacuum pump (32) is connected to the other end of the vacuum inlet pipe (31); one end of the vacuum outlet pipe (33) is connected to the vacuum pump (32); and the other end of the vacuum outlet pipe (33) is connected to the separation assembly (50).

6. The vacuum cooling device for foam molding according to claim 5, characterized in that: The separation assembly (50) comprises a steam-water separation shell (51), an air inlet pipe (52), an exhaust pipe (53), a drainage piece (54) and a drainage pipe (55); the steam-water separation shell (51) is installed inside the support frame (11); one end of the air inlet pipe (52) is inserted into the upper side wall of the steam-water separation shell (51); the other end of the air inlet pipe (52) is connected to the other end of the vacuum exhaust pipe (33); the lower end of the exhaust pipe (53) is fixedly inserted into the top of the steam-water separation shell (51); the drainage piece (54) is installed at the bottom of the steam-water separation shell (51); and the upper end of the drainage pipe (55) is inserted into the bottom of the drainage piece (54).

7. The foam molding vacuum cooling device according to claim 6, characterized in that: The filter assembly (60) comprises a fixing ring (61), four telescopic parts (62), a filter (63), four clamping blocks (64), a push ring (65) and four push rods (66); the fixing ring (61) is connected to the inner side wall of the lower end of the exhaust pipe (53); the upper ends of the four telescopic parts (62) are fixedly connected to the bottom of the fixing ring (61); the outer side wall of the filter (63) abuts against the inner side wall of the lower end of the exhaust pipe (53); the lower ends of the four telescopic parts (62) are fixedly connected to the top of the filter (63); the four clamping blocks (64) are connected to the bottom periphery of the filter (63); the push ring (65) is fixedly sleeved on the upper end of the filter (63); the tops of the four push rods (66) are fixedly connected to the bottom of the push ring (65); and the bottom of the filter (63) is concave.

8. The foam molding vacuum cooling device according to claim 7, characterized in that: Each telescopic member (62) comprises an upper sleeve tube (620), a lower sleeve tube (621) and a spring. The top of the upper sleeve tube (620) is fixedly connected to the bottom of the fixing ring (61), the bottom of the lower sleeve tube (621) is fixedly connected to the top of the filter screen (63), the lower end of the upper sleeve tube (620) is slidably sleeved on the upper end of the lower sleeve tube (621), the spring is accommodated in the lower sleeve tube (621), and the top of the spring is fixedly connected to the top of the inner wall of the upper sleeve tube (620), and the bottom of the spring is fixedly connected to the bottom of the inner wall of the lower sleeve tube (621).

9. The foam molding vacuum cooling device according to claim 8, characterized in that: A sliding groove (530) is provided at the bottom of the lower end of the exhaust pipe (53), four receiving grooves (630) are provided at the bottom periphery of the filter screen (63), the four knocking mechanisms (70) include four knocking components (71), the four knocking components (71) are respectively received in the four receiving grooves (630), each knocking component (71) includes a shaking rope (72) and a knocking ball (73) made of a metal material, the top of the shaking rope (72) is fixedly connected to the top side wall of the receiving groove (630), The knocking ball (73) is fixedly connected to the bottom of the shaking rope (72), the shaking rope (72) comprises a storage section (720) and a knocking section (721) which are connected in sequence, the top of the storage section (720) is fixedly connected to the top side wall of the storage groove (630), and the storage section (720) is stored in the storage groove (630), the top of the knocking section (721) is fixedly connected to the bottom of the storage section (720), and the bottom of the knocking section (721) is fixedly connected to the knocking ball (73).

10. The vacuum cooling device for foam molding according to claim 9, characterized in that: The auxiliary scraping mechanism (80) comprises a sliding scraping ring (81) and four auxiliary impact members (82). The sliding scraping ring (81) is slidably mounted on the middle part of the filter screen (63), and the outer side wall of the sliding scraping ring (81) abuts against the side wall of the sliding groove (530). The four auxiliary impact members (82) are respectively installed on the bottom of the sliding scraping ring (81). Each auxiliary impact member (82) comprises a swing rope (83) and a gravity ball (84) made of metal material. The top of the swing rope (83) is fixedly connected to the bottom of the sliding scraping ring (81), and the gravity ball (84) is fixedly connected to the bottom of the swing rope (83). The length of the swing rope (83) is longer than the length of the striking section (721).

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