Injection molding machine exhaust collection device

Abstract

This invention provides an injection molding machine exhaust gas collection device, including an injection molding machine body. A collection assembly is connected to the exhaust end of the injection molding machine body, and a processing assembly is connected to the exhaust end of the collection assembly. The collection assembly includes an exhaust gas collection hood installed at the exhaust end of the injection molding machine body, an exhaust pipe installed at the exhaust end of the exhaust gas collection hood, and a negative pressure suction mechanism connected to the exhaust end of the exhaust pipe. The processing assembly includes a cooling and filtering mechanism sleeved on the outer surface of the exhaust pipe, a sterilization tank sleeved on the outside of the cooling and filtering mechanism, and a water outlet pipe installed on the lower surface of the sterilization tank. This invention can cool the exhaust gas during the collection process, thereby preventing high-temperature exhaust gas from affecting the collection work, and can use the collected waste heat to assist in the exhaust gas treatment process, thereby reducing energy consumption.

Description

Technical Field

[0001] This invention relates to the technical field of injection molding machines, and specifically to an injection molding machine exhaust gas collection device. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds.

[0003] According to patent application CN201920204624.3, an injection molding machine exhaust gas collection device includes a main body; a vent pipe located above the main body, with its opening at the top, for collecting and discharging exhaust gas generated by the injection molding machine, reducing the harm to human health and the air environment caused by exhaust gas diffusion and emission; a treatment device located on the vent pipe, with its two ends connected to the vent pipe, for purifying the exhaust gas entering the treatment device; a digital sensor located inside the vent pipe, communicating with the treatment device, for detecting and providing feedback on real-time exhaust gas indicators; and a control terminal, communicating with the digital sensor, for controlling the operation of the treatment device based on the feedback from the digital sensor. By automatically collecting, filtering, and purifying the exhaust gas, it can be discharged into the atmosphere without polluting the atmospheric environment.

[0004] The aforementioned collection device controls the operation of the processing device based on feedback from digital sensors until it can be discharged into the atmosphere without polluting the atmospheric environment. However, the aforementioned collection device only draws the exhaust gas into the filter element for processing through a fan, which makes the high-temperature exhaust gas easy to damage the collection equipment. Summary of the Invention

[0005] The present invention mainly provides an injection molding machine exhaust gas collection device to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] An injection molding machine exhaust gas collection device includes an injection molding machine body, an exhaust outlet of the injection molding machine body is connected to a collection component, and an exhaust outlet of the collection component is connected to a processing component.

[0008] The collection assembly includes a waste gas collection hood installed at the exhaust end of the injection molding machine body, an exhaust pipe installed at the exhaust end of the waste gas collection hood, and a negative pressure suction mechanism connected to the exhaust end of the exhaust pipe.

[0009] The processing assembly includes a cooling and filtration mechanism sleeved on the outer surface of the air outlet pipe, a sterilization tank sleeved on the outside of the cooling and filtration mechanism, and a water outlet pipe installed on the lower surface of the sterilization tank.

[0010] The cooling and filtration mechanism includes a heat exchange cylinder sleeved on the outer surface of the air outlet pipe, and a conical filter cylinder installed at the bottom of the heat exchange cylinder and sleeved on the outer surface of the air outlet pipe.

[0011] Furthermore, the exhaust pipe includes a first gas supply pipe installed on the outer surface of the exhaust gas collection hood, and a heat dissipation pipe connected to the exhaust end of the first gas supply pipe and passing through the heat exchange cylinder. The exhaust gas in the heat dissipation pipe is cooled by water in the heat exchange cylinder to prevent the exhaust gas entering the fan from overheating and affecting the collection of exhaust gas.

[0012] Furthermore, the interior of the conical filter cylinder is equipped with multiple activated carbon filter plates, a partition plate installed at the bottom of the activated carbon filter plates, and a filter screen cylinder installed at the bottom of the partition plate. The filtered exhaust gas can only be discharged through the second gas delivery pipe due to the obstruction of the partition plate.

[0013] Furthermore, the negative pressure suction mechanism includes a second air supply pipe with one end inserted through the partition shell and the other end extending to the outside, and a fan connected to the end of the second air supply pipe extending to the outside. The exhaust gas filtered by the conical filter enters the second air supply pipe and then enters the exhaust pipe through the fan.

[0014] Furthermore, an annular infusion pipe is installed inside the sterilization tank. Multiple outlet heads are installed on the inner ring surface of the annular infusion pipe, and an outlet pipe is installed on the outer surface of the annular infusion pipe. The end of the outlet pipe away from the annular infusion pipe extends to the outside and is connected to a water pump. An inlet pipe is connected to the inlet end of the water pump. The inlet pipe extends into the interior of the sterilization tank and is connected to the outlet end of the heat exchange cylinder. The liquid enters the water pump through the inlet pipe. After heat exchange, the liquid enters the outlet pipe under the action of the water pump, and then enters the annular infusion pipe through the outlet pipe, and is sprayed out from the outlet head on the annular infusion pipe.

[0015] Furthermore, an annular gas supply pipe is installed inside the sterilization tank at the bottom end of the annular infusion pipe. Multiple rotating gas outlets are installed on the inner ring surface of the annular gas supply pipe, and a fourth gas supply pipe is installed on the outer surface of the annular gas supply pipe. The gas outlet of the fourth gas supply pipe is connected to the gas outlet of the blower. The blower delivers the filtered waste gas in the conical filter cylinder into the fourth gas supply pipe. The waste gas then enters the annular gas supply pipe through the fourth gas supply pipe and is ejected from the rotating gas outlets on the annular gas supply pipe.

[0016] Furthermore, the rotating gas outlet head includes a guide vane rotatably connected to the inner ring surface of the annular gas delivery pipe, and a guide rail disposed on one side surface of the guide vane. By pushing the groove of the guide rail, the guide vane is driven to rotate, so that the gas flows along the rotating guide vane, so that the waste gas can be uniformly mixed with the liquid.

[0017] Furthermore, the negative pressure suction mechanism also includes a three-way pipe installed at the air inlet end of the fourth air supply pipe, a third air supply pipe installed at the air outlet end of the three-way pipe, and an electric air valve installed on the housing of the third air supply pipe. The end of the third air supply pipe away from the three-way pipe extends into the interior of the filter cylinder. The air enters the filter cylinder through the third air supply pipe, thereby increasing the pressure difference between the inner and outer sides of the filter cylinder when the filter cylinder is clogged, so that impurities attached to the filter cylinder can be removed from the filter cylinder by means of the pressure difference.

[0018] Furthermore, the inner wall surface of the sterilization tank is equipped with multiple heating copper tubes, which are arranged around the axis of the sterilization tank. The sterilization tank heats and sterilizes the mixture of waste gas and liquid through the heating copper tubes inside.

[0019] Furthermore, an electromagnetic flow meter is installed at the end of the vent pipe away from the sterilization tank, and the flow rate of the liquid flowing out of the vent pipe is detected by the electromagnetic flow meter.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Firstly, the present invention can cool the exhaust gas during the collection process, thereby preventing high-temperature exhaust gas from affecting the collection work. Specifically, the high-temperature exhaust gas generated inside the injection molding machine expands and rises into the exhaust gas collection hood. The exhaust gas in the exhaust gas collection hood enters the heat dissipation pipe through the first gas delivery pipe. Since the heat dissipation pipe is inserted inside the heat exchange cylinder, the exhaust gas in the heat dissipation pipe is cooled by the water in the heat exchange cylinder, preventing the exhaust gas entering the fan from overheating and affecting the collection work.

[0022] Secondly, this invention can reduce energy consumption by using the collected waste heat to assist in the treatment of waste gas. Specifically, the waste gas filtered by the conical filter tube enters the annular gas transmission pipe through the fourth gas transmission pipe and is sprayed out by the rotating gas outlet on the annular gas transmission pipe. During this process, the liquid in the heat exchange tube after heat exchange enters the annular liquid transmission pipe and is sprayed out by the liquid outlet on the annular liquid transmission pipe. The sprayed liquid is evenly mixed with the waste gas, thereby adsorbing water-soluble impurities in the waste gas and forming warm wastewater, which is convenient for subsequent heating and sterilization.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a top view of the present invention;

[0026] Figure 3 for Figure 2 A sectional view along line AA.

[0027] Figure 4 This is a schematic diagram of the air outlet pipe and negative pressure suction mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the negative pressure suction mechanism of the present invention;

[0029] Figure 6 This is an anatomical diagram of the conical filter cylinder of the present invention;

[0030] Figure 7 for Figure 7 Enlarged view of the structure of area A in the image;

[0031] Figure 8 This is a rear view of the present invention.

[0032] In the diagram: 10. Injection molding machine body; 20. Collection assembly; 21. Exhaust gas collection hood; 22. Exhaust pipe; 221. First air supply pipe; 222. Heat dissipation pipe; 223. Electromagnetic flowmeter; 23. Negative pressure suction mechanism; 231. Second air supply pipe; 232. Fan; 233. T-connector; 234. Third air supply pipe; 235. Electric air valve; 30. Processing assembly; 31. Cooling and filtration mechanism; 311. 312. Heat exchange cylinder; 313. Conical filter cylinder; 314. Activated carbon filter plate; 315. Baffle plate; 316. Filter screen cylinder; 32. Sterilization tank; 327. Annular infusion pipe; 328. Liquid outlet head; 329. Liquid outlet pipe; 320. Water pump; 321. Liquid inlet pipe; 321. Annular gas infusion pipe; 322. Rotary gas outlet head; 323. Fourth gas infusion pipe; 324. Heating copper pipe; 325. Water outlet pipe. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] For an example, please refer to the appendix. Figure 1-8 An injection molding machine exhaust gas collection device includes an injection molding machine body 10, an exhaust end of the injection molding machine body 10 is connected to a collection component 20, and an exhaust end of the collection component 20 is connected to a processing component 30.

[0037] The collection assembly 20 includes a waste gas collection hood 21 installed at the outlet end of the injection molding machine body 10, an outlet pipe 22 installed at the outlet end of the waste gas collection hood 21, and a negative pressure suction mechanism 23 connected to the outlet end of the outlet pipe 22.

[0038] The processing component 30 includes a cooling and filtering mechanism 31 sleeved on the outer surface of the air outlet pipe 22, a sterilization treatment tank 32 sleeved on the outside of the cooling and filtering mechanism 31, and a water outlet pipe 33 installed on the lower surface of the sterilization treatment tank 32.

[0039] The cooling and filtering mechanism 31 includes a heat exchange cylinder 311 sleeved on the outer surface of the air outlet pipe 22, and a conical filter cylinder 312 installed at the bottom end of the heat exchange cylinder 311 and sleeved on the outer surface of the air outlet pipe 22.

[0040] For details, please refer to the appendix. Figure 4 , 5 6. The exhaust pipe 22 includes a first gas supply pipe 221 installed on the outer surface of the exhaust gas collection hood 21, and a heat dissipation pipe 222 connected to the exhaust end of the first gas supply pipe 221 and passing through the heat exchange cylinder 311. The conical filter cylinder 312 has a plurality of activated carbon filter plates 3121 installed from top to bottom, a partition plate 3122 installed at the bottom of the activated carbon filter plate 3121, and a filter screen cylinder 3123 installed at the bottom of the partition plate 3122.

[0041] It should be noted that in this embodiment, the exhaust gas in the exhaust gas collection hood 21 enters the heat dissipation pipe 222 through the first gas delivery pipe 221. Since the heat dissipation pipe 222 is inserted inside the heat exchange cylinder 311, the water in the heat exchange cylinder 311 cools the exhaust gas in the heat dissipation pipe 222, preventing the exhaust gas entering the fan 232 from overheating and affecting the collection of exhaust gas.

[0042] Furthermore, after the exhaust gas undergoes heat exchange in the heat dissipation pipe 222, it enters the conical filter cylinder 312 and is filtered by multiple activated carbon filter plates 3121. Due to the obstruction of the partition plate 3122, the filtered exhaust gas can only be discharged through the second gas delivery pipe 231.

[0043] For details, please refer to the appendix. Figure 3 , 4 7. The negative pressure suction mechanism 23 includes a second air supply pipe 231 with one end inserted through the shell of the partition 3122 and the other end extending to the outside, and a fan 232 connected to the end of the second air supply pipe 231 extending to the outside. An annular infusion pipe 321 is installed inside the sterilization tank 32. Multiple outlet heads 322 are installed on the inner ring surface of the annular infusion pipe 321. An outlet pipe 323 is installed on the outer surface of the annular infusion pipe 321. The end of the outlet pipe 323 away from the annular infusion pipe 321 extends to the outside and is connected to a water pump 324. The inlet end of the water pump 324 is connected to an inlet pipe 325. The sterilization tank 32 extends into the interior and connects to the liquid outlet of the heat exchange cylinder 311. An annular gas supply pipe 326 located at the bottom of the annular liquid supply pipe 321 is installed inside the sterilization tank 32. Multiple rotating gas outlets 327 are installed on the inner ring surface of the annular gas supply pipe 326. A fourth gas supply pipe 328 is installed on the outer surface of the annular gas supply pipe 326. The gas outlet of the fourth gas supply pipe 328 is connected to the gas outlet of the fan 232. The rotating gas outlet 327 includes a guide vane 3271 rotatably connected to the inner ring surface of the annular gas supply pipe 326, and a guide rail 3272 provided on one side surface of the guide vane 3271.

[0044] It should be noted that, in this embodiment, the exhaust gas filtered by the conical filter cartridge 312 enters the second gas delivery pipe 231 and then enters the fourth gas delivery pipe 328 through the fan 232.

[0045] Furthermore, the liquid after heat exchange in the heat exchange cylinder 311 enters the water pump 324 through the inlet pipe 325. Under the action of the water pump 324, the liquid after heat exchange enters the outlet pipe 323 and enters the annular delivery pipe 321 through the outlet pipe 323. It is then sprayed out from the outlet head 322 on the annular delivery pipe 321. The sprayed liquid mixes evenly with the waste gas, thereby adsorbing water-soluble impurities in the waste gas.

[0046] Furthermore, the waste gas filtered inside the conical filter cartridge 312 is conveyed by the fan 232 into the fourth gas delivery pipe 328. The waste gas enters the annular gas delivery pipe 326 through the fourth gas delivery pipe 328 and is sprayed out by the rotating gas outlet 327 on the annular gas delivery pipe 326, and is evenly mixed with the liquid sprayed out by the annular liquid delivery pipe 321.

[0047] Furthermore, when the annular gas pipe 326 discharges gas, the gas pushes the groove of the gas guide rail 3272, thereby driving the gas guide vane 3271 to rotate, so that the gas flows along the rotating gas guide vane 3271, so that the waste gas can be uniformly mixed with the liquid.

[0048] For details, please refer to the appendix. Figure 4 and 5 The negative pressure suction mechanism 23 also includes a three-way pipe 233 installed at the air inlet end of the fourth air supply pipe 328, a third air supply pipe 234 installed at the air outlet end of the three-way pipe 233, and an electric air valve 235 installed on the housing of the third air supply pipe 234. The end of the third air supply pipe 234 away from the three-way pipe 233 extends into the interior of the filter cylinder 3123. A plurality of heating copper pipes 329 are installed on the inner wall surface of the sterilization tank 32. The plurality of heating copper pipes 329 are arranged around the axis of the sterilization tank 32. An electromagnetic flow meter 223 is installed at the end of the air outlet pipe 22 away from the sterilization tank 32.

[0049] It should be noted that, in this embodiment, after the electric air valve 235 is opened, the exhaust gas discharged through the fourth air supply pipe 328 enters the third air supply pipe 234 through the three-way pipe 233, and then enters the filter cylinder 3123 through the third air supply pipe 234. This increases the pressure difference between the inner and outer sides of the filter cylinder 3123 when the filter cylinder 3123 is clogged, so that the impurities attached to the filter cylinder 3123 can be removed from the filter cylinder 3123 by means of the pressure difference.

[0050] Furthermore, the sterilization tank 32 uses a heating copper pipe 329 inside to heat and sterilize the mixture of waste gas and liquid;

[0051] Furthermore, the air outlet pipe 22 detects the flow rate of the liquid flowing out of the pipe through the electromagnetic flow meter 223. When the flow rate exceeds the threshold set by the electromagnetic flow meter 223, the PLC controller connected to the electromagnetic flow meter 223 promptly controls the electric air valve 235 to open, so as to backwash the filter cylinder 3123.

[0052] The specific operation method of this invention is as follows:

[0053] The high-temperature exhaust gas generated inside the injection molding machine body 10 expands and rises into the exhaust gas collection hood 21. The exhaust gas in the exhaust gas collection hood 21 enters the heat dissipation pipe 222 through the first air supply pipe 221. Since the heat dissipation pipe 222 is inserted inside the heat exchange cylinder 311, the water in the heat exchange cylinder 311 cools the exhaust gas in the heat dissipation pipe 222, preventing the exhaust gas entering the fan 232 from overheating and affecting the collection of exhaust gas.

[0054] After heat exchange in the heat exchange tube 222, the exhaust gas enters the conical filter cylinder 312 and is filtered by multiple activated carbon filter plates 3121. Then, the exhaust gas filtered by the conical filter cylinder 312 enters the second gas transmission pipe 231 and the fan 232, and then enters the fourth gas transmission pipe 328. The exhaust gas enters the annular gas transmission pipe 326 through the fourth gas transmission pipe 328 and is sprayed out by the rotating gas outlet 327 on the annular gas transmission pipe 326. During this process, the liquid after heat exchange in the heat exchange tube 311 enters the water pump 324 through the liquid inlet pipe 325. Under the action of the water pump 324, the liquid after heat exchange enters the liquid outlet pipe 323 and then enters the annular liquid transmission pipe 321 through the liquid outlet pipe 323. It is sprayed out by the liquid outlet 322 on the annular liquid transmission pipe 321. The sprayed liquid mixes evenly with the exhaust gas, thereby adsorbing water-soluble impurities in the exhaust gas. Finally, the treated wastewater that meets the discharge requirements is discharged through the water outlet pipe 33.

[0055] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An injection molding machine off-gas collection apparatus comprising an injection molding machine (10), characterized by, The air outlet of the injection molding machine (10) is connected to a collection component (20), and the air outlet of the collection component (20) is connected to a processing component (30). The collection assembly (20) includes a waste gas collection hood (21) installed at the outlet of the injection molding machine (10), an outlet pipe (22) installed at the outlet of the waste gas collection hood (21), and a negative pressure suction mechanism (23) connected to the outlet of the outlet pipe (22). The processing component (30) includes a cooling filter mechanism (31) sleeved on the outer surface of the air outlet pipe (22), a sterilization tank (32) sleeved on the outside of the cooling filter mechanism (31), and a water outlet pipe (33) installed on the lower surface of the sterilization tank (32). The cooling and filtration mechanism (31) includes a heat exchange cylinder (311) sleeved on the outer surface of the air outlet pipe (22), and a conical filter cylinder (312) installed at the bottom end of the heat exchange cylinder (311) and sleeved on the outer surface of the air outlet pipe (22). The conical filter cylinder (312) has multiple activated carbon filter plates (3121) installed from top to bottom inside, a partition (3122) installed at the bottom of the activated carbon filter plate (3121), and a filter screen cylinder (3123) installed at the bottom of the partition (3122). The negative pressure suction mechanism (23) includes a second air supply pipe (231) with one end passing through the shell of the partition (3122) and the other end extending to the outside, and a fan (232) connected to the end of the second air supply pipe (231) extending to the outside. The sterilization tank (32) is equipped with an annular infusion pipe (321) inside. Multiple outlet heads (322) are installed on the inner ring surface of the annular infusion pipe (321). An outlet pipe (323) is installed on the outer surface of the annular infusion pipe (321). The end of the outlet pipe (323) away from the annular infusion pipe (321) extends to the outside and is connected to a water pump (324). The inlet end of the water pump (324) is connected to an inlet pipe (325). The inlet pipe (325) extends into the interior of the sterilization tank (32) and is connected to the outlet end of the heat exchange cylinder (311). The sterilization tank (32) is equipped with an annular gas supply pipe (326) located at the bottom of the annular infusion pipe (321). Multiple rotating gas outlets (327) are installed on the inner ring surface of the annular gas supply pipe (326). A fourth gas supply pipe (328) is installed on the outer surface of the annular gas supply pipe (326). The gas outlet end of the fourth gas supply pipe (328) is connected to the gas outlet end of the blower (232). The rotating air outlet (327) includes an air guide vane (3271) rotatably connected to the inner ring surface of the annular air supply pipe (326), and an air guide rail (3272) disposed on one side surface of the air guide vane (3271).

2. A device for collecting off-gas from an injection molding machine according to claim 1, wherein The exhaust pipe (22) includes a first gas supply pipe (221) installed on the outer surface of the exhaust gas collection hood (21), and a heat dissipation pipe (222) connected to the exhaust end of the first gas supply pipe (221) and passing through the heat exchange cylinder (311).

3. A device for collecting off-gas from an injection molding machine according to claim 1, wherein The negative pressure suction mechanism (23) further includes a three-way pipe (233) installed at the air inlet end of the fourth air supply pipe (328), a third air supply pipe (234) installed at the air outlet end of the three-way pipe (233), and an electric air valve (235) installed on the housing of the third air supply pipe (234). The end of the third air supply pipe (234) away from the three-way pipe (233) extends into the interior of the filter cylinder (3123).

4. A device for collecting off-gas from an injection molding machine according to claim 1, wherein The inner wall surface of the sterilization tank (32) is equipped with a plurality of heating copper tubes (329), which are arranged around the axis of the sterilization tank (32).

5. A device for collecting off-gas from an injection molding machine according to claim 1, wherein An electromagnetic flow meter (223) is installed at the end of the air outlet pipe (22) away from the sterilization tank (32).

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