Injection molding equipment with waste gas pretreatment and purification mechanism

Abstract

The invention relates to the technical field of waste gas treatment, in particular to injection molding equipment with a waste gas pretreatment and purification mechanism. The injection molding equipment comprises an injection molding equipment body, a pretreatment tank is arranged on one side of the injection molding equipment body, a dust removal and purification assembly is arranged in the pretreatment tank, and a liquid storage tank is fixedly connected to the bottom of the pretreatment tank; a stirring assembly is arranged in the liquid storage tank; in the injection molding waste gas extraction process, by means of rotation of the rotating rod, the multiple dust removal filter plates are driven to be alternately and circularly used, it is ensured that large-particle impurities are continuously and efficiently blocked in turn in the filtering process, and the replacement frequency of cooling water is prevented from being increased; the stirring assembly can be promoted to be matched with the stirring blades on the rotating rod, generation of large bubbles is eliminated, dissolution of small-particle impurities is promoted, the retention time of waste gas in cooling water is prolonged, then the small-particle impurity removal effect is improved, and in addition, during purification and discharging, impurities on the dust removal filter plate can be synchronously subjected to back flushing cleaning and collection.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to an injection molding device with a waste gas pretreatment and purification mechanism. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes of thermoplastics or thermosetting plastics. During the injection molding process of the injection molding machine, the harmful substances generated by heating the raw materials mainly include various solid small particles, nitrogen oxides, sulfides and other harmful substances.

[0003] For example, in the prior art, there is an injection molding machine with exhaust gas collection, which is published as CN218083853U. Although the exhaust gas collection mechanism can achieve dust removal and purification of the exhaust gas, the following problems still exist during the purification process:

[0004] (1) There is a significant lack of pre-treatment and filtration of large particle impurities. The system only relies on cooling water to dissolve and remove impurities in the exhaust gas, so that the exhaust gas that has not been effectively pre-treated directly enters the cooling water system, causing a large number of large particle impurities to quickly accumulate in the water, accelerating the pollution rate of the cooling water, and forcing frequent replacement of cooling water to maintain the purification effect, thereby reducing the overall exhaust gas purification treatment efficiency and continuity;

[0005] (2) Although stirring blades are provided to optimize the contact effect between cooling water and exhaust gas and avoid the formation of large bubbles, a large number of small bubbles are released after the large bubbles are punctured, which makes it impossible for the exhaust gas in the small bubbles to better contact with the cooling water, limiting the effective dissolution and removal of some small particle impurities, thereby affecting the overall effect of cooling adsorption filtration.

[0006] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0007] The object of the present invention is to provide an injection molding equipment with an exhaust gas pretreatment and purification mechanism to solve the technical defects mentioned above. During the extraction process of the injection molding exhaust gas, the present invention, with the help of the rotation of the rotating rod, not only drives multiple dust removal filter plates to be alternately recycled to ensure that large particles of impurities are continuously and efficiently blocked in turn during the filtration process, avoiding increasing the frequency of cooling water replacement; it can also promote the cooperation between the stirring assembly and the stirring blades on the rotating rod to eliminate the generation of large bubbles and promote the dissolution of small particles of impurities, as well as prolong the residence time of the exhaust gas in the cooling water, thereby improving the removal effect of small particles of impurities. In addition, during the purification and discharge process, the impurities on the dust removal filter plate can be backblown and collected simultaneously.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] An injection molding device with an exhaust gas pre-treatment and purification mechanism comprises an injection molding device body, a pre-treatment tank is arranged on one side of the injection molding device body, a tank cover is bolted to the top of the pre-treatment tank, and a dust suction pipe is fixedly connected between the tank cover and the injection molding device body;

[0010] A dust removal and purification assembly is provided inside the pretreatment tank, and the dust removal and purification assembly includes a rotating drum rotatably mounted on the bottom of the pretreatment tank, a plurality of dust removal filter plates are equidistantly mounted on the annular side wall of the rotating drum, and a purification cavity fixedly connected to the tank cover is provided inside the rotating drum;

[0011] The bottom of the pretreatment tank is fixedly connected to a liquid storage tank, and a stirring assembly is arranged inside the liquid storage tank. The stirring assembly includes a barrier fixing frame fixedly connected to the inside of the liquid storage tank, a connecting frame is arranged above the barrier fixing frame, and a barrier block is fixedly connected to the gap of the barrier fixing frame at the bottom of the connecting frame.

[0012] Preferably, a mounting groove matched with the corresponding dust removal filter plate is provided on the top of the rotating cylinder, a flow groove connected with the corresponding mounting groove is penetrated through the annular outer wall of the rotating cylinder, and the bottom of the tank cover is rotatably connected with an auxiliary rotating seat abutting the dust removal filter plate and the rotating cylinder.

[0013] Preferably, a connecting pipe is fixedly connected to the outer wall of one side of the pretreatment tank, and the closed end of the connecting pipe extends through the interior of the liquid storage tank and is located below the barrier fixing frame. A plurality of air outlet holes are opened on the connecting pipe and located inside the liquid storage tank, and an exhaust fan is fixedly provided on the connecting pipe.

[0014] Preferably, an exhaust pipe is provided on the side of the pretreatment tank away from the connecting pipe, and the air inlet end of the exhaust pipe extends through the interior of the liquid storage tank and is located above the barrier fixing frame, a plurality of shunt pipes are fixedly connected between the exhaust pipe and the pretreatment tank, and an exhaust fan 2 is fixedly provided on the exhaust pipe.

[0015] Preferably, a collecting chamber is opened inside the purification chamber, and a blocking filter plate is fixedly connected inside the collecting chamber, a vibrator is fixedly installed on the bottom of the blocking filter plate, an air inlet is opened at the bottom of the collecting chamber on one side close to the exhaust pipe, and a dust-proof curtain is fixedly connected to the top of the air inlet.

[0016] Preferably, the top of the purification chamber is threadedly connected to an exhaust pipe connected to the collection chamber, and the bottom of the exhaust pipe is fixedly connected to a barrier net, and the collection chamber is filled with activated carbon at the top of the barrier filter plate.

[0017] Preferably, arc-shaped baffles are symmetrically fixedly connected to both sides of the purification chamber, and sealing gaskets are fixedly embedded on the inner side wall of the rotating cylinder and located at the periphery of each flow slot, and the sealing gaskets are slidably connected to the purification chamber and the arc-shaped baffles.

[0018] Preferably, the bottom of the liquid storage tank is rotatably connected to a plurality of rotating rods, and the top of the rotating rod movably penetrates into the pretreatment tank and is fixedly connected to a gear, the rotating cylinder is fixedly connected to an external gear ring that meshes with the plurality of gears at the same time, and a stirring blade is fixedly connected to the rotating rod and located below the barrier fixing frame, and the bottom bolt of the liquid storage tank is installed with a motor for driving the corresponding rotating rod to rotate.

[0019] Preferably, a movable groove connected to the pretreatment tank is provided on the inner wall of the liquid storage tank and between two adjacent groups of rotating rods, an L-shaped plate fixedly connected to the connecting frame is slidably connected in the movable groove, an annular cam groove is provided on the annular side wall of the rotating cylinder, and a guide pin matched with the annular cam groove is fixedly connected to the L-shaped plate.

[0020] The beneficial effects of the present invention are as follows:

[0021] (1) In the process of extracting and purifying the waste gas generated by the injection molding equipment body during the injection molding process, the present invention first drives the dust removal filter plate to rotate to the air inlet end of the connecting pipe in turn through the rotating drum, so as to achieve the blocking of large particles of impurities in turn, ensure the continuous high efficiency in the filtering process, and effectively avoid the clogging problem caused by the long-term use of a single filter plate; then use the cooling water in the liquid storage tank to perform a secondary cooling adsorption filtration treatment, which not only achieves the removal of small particles of impurities in the waste gas, but also avoids too many large particles of impurities dissolving in the cooling water, thereby increasing the frequency of cooling water replacement and reducing the waste gas treatment efficiency; then cooperate with the activated carbon filled in the purification chamber to perform a three-stage adsorption purification treatment on the waste gas, which greatly reduces the effect of the pollutant content in the discharged waste gas.

[0022] (2) The present invention, with the help of the rapid rotation of the rotating rod, can not only drive the rotating drum to rotate at a reduced speed and realize the alternating circulation of multiple dust removal filter plates, but also drive the stirring blades to stir the cooling water, thereby eliminating large bubbles and promoting the dissolution of small particle impurities, thereby improving the secondary filtration effect; in addition, with the help of the rotation of the rotating drum, the L-shaped plate carrying the barrier block is prompted to move back and forth, and multiple barrier blocks are intermittently inserted into the gaps on the barrier fixing frame, thereby further extending the residence time of the exhaust gas in the cooling water, reducing the volume of bubbles, and significantly improving the removal effect of small particle impurities.

[0023] (3) In the process of purifying and discharging the waste gas after secondary treatment, the exhaust fan 2 is used to increase the flow rate of the gas, which can not only ensure the purification rate in the waste gas purification process, but also be combined with the rotating drum and the vibrating barrier filter plate to back-blow and clean the dust filter plate, thereby achieving effective removal and collection of large particles of impurities on the dust filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings;

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the connection between the pretreatment tank and the liquid storage tank of the present invention;

[0027] Figure 3 It is a cross-sectional schematic diagram of the pretreatment tank and the liquid storage tank of the present invention;

[0028] Figure 4 It is a schematic diagram of the coordination of the stirring assembly of the present invention with the pretreatment tank and the liquid storage tank;

[0029] Figure 5 It is a schematic diagram of the cooperation between the rotating cylinder and the purification chamber of the present invention;

[0030] Figure 6 It is a schematic diagram of the cooperation between the rotating drum and the stirring assembly of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the purification chamber of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the barrier fixing plate of the present invention;

[0033] Fig. 9 It is a schematic structural diagram of the stirring assembly of the present invention.

[0034] Legend:

[0035] 1. Injection molding equipment body;

[0036] 2. Pretreatment tank; 21. Tank cover; 22. Dust suction pipe; 23. Auxiliary rotating seat; 24. Connecting pipe; 25. Exhaust fan 1; 26. Exhaust pipe; 27. Diverter pipe; 28. Exhaust fan 2;

[0037] 3. Dust removal and purification assembly; 31. Rotating drum; 32. Dust removal filter plate; 33. Purification chamber; 34. Mounting slot; 35. Flow slot; 36. Collection chamber; 37. Blocking filter plate; 38. Vibrating machine; 39. Dust-blocking curtain; 310. Exhaust pipe; 311. Arc baffle; 312. External gear ring; 313. Annular cam groove;

[0038] 4. Liquid storage tank; 41. Rotating rod; 42. Gear; 43. Stirring blade; 44. Motor; 45. Movable tank;

[0039] 5. Stirring assembly; 51. Blocking fixing frame; 52. Connecting frame; 53. Blocking block; 54. L-shaped plate; 55. Guide pin. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figure 1-Figure 7 As shown, the existing technology lacks the pre-treatment and filtration link for large particle impurities, which will cause a large number of large particle impurities to accumulate rapidly in the water, accelerate the pollution rate of cooling water, force frequent replacement of cooling water and reduce the efficiency of exhaust gas purification treatment. The problem can be solved by the following solutions:

[0042] In the present embodiment, an injection molding device with an exhaust gas pretreatment and purification mechanism includes an injection molding device body 1, a pretreatment tank 2 is provided on one side of the injection molding device body 1, and a tank cover 21 is installed on the top bolt of the pretreatment tank 2. The exhaust gas generated during the injection molding process of the injection molding device body 1 is pre-filtered with large particle impurities by the provided pretreatment tank 2 to avoid a large number of large particle impurities from rapidly accumulating in the water, thereby accelerating the cooling water pollution rate. A dust suction pipe 22 is fixedly connected between the tank cover 21 and the injection molding device body 1, and the suction end of the dust suction pipe 22 is connected to the exhaust gas collecting hood of the injection molding device body 1, so as to fully extract and purify the exhaust gas;

[0043] A dust removal and purification component 3 is provided inside the pretreatment tank 2. The dust removal and purification component 3 includes a rotating cylinder 31 rotatably installed at the bottom of the pretreatment tank 2. A plurality of dust removal filter plates 32 are equidistantly installed on the annular side wall of the rotating cylinder 31. The waste gas generated by the injection molding equipment body 1 during the injection molding process is extracted through the dust suction pipe 22. The rotating rotating cylinder 31 drives the plurality of dust removal filter plates 32 to rotate to the air inlet end of the connecting pipe 24 in turn, so as to realize the blocking and filtering treatment of large particle impurities in turn, ensure the continuous high efficiency in the filtering process, and effectively avoid the clogging problem caused by the long-term use of a single filter plate. A purification cavity 33 fixedly connected to the tank cover 21 is provided inside the rotating cylinder 31 for adsorbing, purifying and discharging the waste gas.

[0044] The bottom of the pretreatment tank 2 is fixedly connected with a liquid storage tank 4 for storing cooling water, and the top of one side of the liquid storage tank 4 is fixedly connected with a liquid injection pipe, and the liquid injection pipe is fixedly provided with a liquid injection valve for injecting cooling water and avoiding the problem of exhaust gas being discharged through the liquid injection pipe. The bottom of the liquid storage tank 4 is fixedly connected with a drain pipe, and the drain pipe is fixedly provided with a drain valve for discharging and replacing turbid cooling water, or the solution for chemical reaction of harmful substances in the exhaust gas is received through the liquid storage tank 4 to improve the quality of cooling filtration;

[0045] A stirring assembly 5 is provided inside the liquid storage tank 4, and the stirring assembly 5 includes a blocking fixing frame 51 fixedly connected to the inside of the liquid storage tank 4, a connecting frame 52 is provided above the blocking fixing frame 51, and a blocking block 53 is fixedly connected to the bottom of the connecting frame 52 corresponding to the gap of the blocking fixing frame 51.

[0046] A mounting groove 34 adapted to the corresponding dust filter plate 32 is provided on the top of the rotating cylinder 31. The cross section of the dust filter plate 32 is an L-shaped structure, so that after the tank cover 21 is separated from the pretreatment tank 2, the damaged dust filter plate 32 can be replaced. A flow groove 35 connected to the corresponding mounting groove 34 is provided through the annular outer wall of the rotating cylinder 31. The flow groove 35 is used to discharge the extracted exhaust gas, and a sealing gasket slidably connected to the mounting groove 34 is embedded on the dust filter plate 32 to increase the sealing between the dust filter plate 32 and the mounting groove 34, so as to ensure the effective filtration of large particles of impurities in the exhaust gas.

[0047] The bottom of the tank cover 21 is rotatably connected to an auxiliary rotating seat 23 that abuts against the dust filter plate 32 and the rotating cylinder 31. Through the provision of the auxiliary rotating seat 23, the dust filter plate 32 can be installed synchronously after the tank cover 21 is installed, and will not interfere with the rotation of the rotating cylinder 31. In addition, a sealing gasket that abuts against the dust filter plate 32 and the rotating cylinder 31 is fixedly embedded on the auxiliary rotating seat 23, thereby increasing the sealing between the auxiliary rotating seat 23 and the dust filter plate 32 and the rotating cylinder 31.

[0048] A connecting pipe 24 is fixedly connected to the outer wall of one side of the pretreatment tank 2, and the closed end of the connecting pipe 24 extends through the interior of the liquid storage tank 4 and is located below the blocking fixed frame 51. A plurality of air outlets are provided on the connecting pipe 24 and located inside the liquid storage tank 4. The portion of the connecting pipe 24 located inside the liquid storage tank 4 is horizontally arranged and fits the bottom position of the liquid storage tank 4, so as to prolong the residence time of the exhaust gas in the cooling water. An exhaust fan 25 is fixedly provided on the connecting pipe 24;

[0049] Start the exhaust fan 25 and cooperate with the connecting pipe 24 to extract the gas in the pretreatment tank 2, so that a negative pressure environment is formed inside the pretreatment tank 2, and then the exhaust gas generated during the injection molding process of the injection molding equipment body 1 is extracted through the dust suction pipe 22, and the large particle impurities contained in the gas are filtered through the dust removal filter plate 32 on the rotating cylinder 31, and then discharged into the cooling water in the liquid storage tank 4 through the connecting pipe 24 and a plurality of air outlets on the connecting pipe 24, and the small particle impurities in the exhaust gas are adsorbed and dissolved in the cooling water, so as to achieve the purpose of secondary cooling adsorption and filtration treatment of the exhaust gas.

[0050] An exhaust pipe 26 is provided on the side of the pretreatment tank 2 away from the connecting pipe 24, and the air inlet end of the exhaust pipe 26 extends through the interior of the liquid storage tank 4 and is located above the barrier fixing frame 51. The air inlet end of the exhaust pipe 26 is located above the cooling water level. At the same time, the air inlet end of the exhaust pipe 26 is tilted downward to avoid extracting cooling water, and at the same time, it can assist the exhaust fan 25 to improve the exhaust gas extraction effect;

[0051] A plurality of shunt pipes 27 are fixedly connected between the exhaust pipe 26 and the pretreatment tank 2, which are used to increase the blowing area of ​​the exhaust gas entering the pretreatment tank 2 and improve the cleaning effect of the dust removal filter plate 32. The exhaust pipe 26 is fixedly provided with an exhaust fan 28. The housing, blades and other parts of the exhaust fan 1 25 and the exhaust fan 2 28 that are directly in contact with the exhaust gas are coated with an anti-corrosion and waterproof coating to extend the service life of the exhaust fan 1 25 and the exhaust fan 2 28;

[0052] After completing the secondary cooling adsorption filtration treatment, start the exhaust fan 28 to cooperate with the exhaust pipe 26 to extract the dust-removed exhaust gas in the liquid storage tank 4, and inject it into the pretreatment tank 2 through multiple diversion pipes 27. Cooperate with the rotating rotating cylinder 31 to increase the exhaust gas extraction effect, and reversely blow the dust filter plate 32 rotated to this position to achieve automatic cleaning of large particles of impurities on the dust filter plate 32.

[0053] A collecting chamber 36 is provided inside the purification chamber 33, and a barrier filter plate 37 is fixedly connected inside the collecting chamber 36, and a vibrator 38 is fixedly installed at the bottom of the barrier filter plate 37. An air inlet is provided at the bottom of the collecting chamber 36 on one side close to the exhaust pipe 26, and an inclined surface is provided above one side of the air inlet on the collecting chamber 36 to guide the exhaust gas to better enter the collecting chamber 36, and the large particles of impurities on the dust removal filter plate 32 are blown into the collecting chamber 36 through the air inlet by the exhaust fan 28, and are intercepted and collected in the collecting chamber 36 under the obstruction of the barrier filter plate 37;

[0054] The vibration machine 38 drives the barrier filter plate 37 to vibrate to prevent the filter holes of the barrier filter plate 37 from being blocked, and a dust curtain 39 is fixedly connected to the top of the air inlet. By setting the dust curtain 39, when the exhaust gas treatment is stopped, the dust curtain 39 can block the air inlet, thereby facilitating the disassembly of the tank cover 21 and cleaning the dust and impurities in the collection chamber 36.

[0055] The top of the purification chamber 33 is threadedly connected to an exhaust pipe 310 that is connected to the collecting chamber 36, and the bottom of the exhaust pipe 310 is fixedly connected to a barrier net. The collecting chamber 36 is located on the top of the barrier filter plate 37 and is filled with activated carbon. After the exhaust gas enters the collecting chamber 36, the activated carbon filled in the purification chamber 33 performs a three-stage adsorption purification treatment on the exhaust gas, and then is discharged through the exhaust pipe 310, which greatly reduces the pollutant content in the exhaust gas. The barrier net arranged in the exhaust pipe 310 can ensure that the activated carbon particles are closely fitted to each other during the exhaust gas filtration process, thereby effectively ensuring the adsorption and purification of the exhaust gas.

[0056] Arc-shaped baffles 311 are symmetrically fixedly connected to both sides of the purification chamber 33. The arc-shaped baffles 311 can prevent a certain flow groove 35 on the rotating cylinder 31 from being connected to the interior of the rotating cylinder 31 and the purification chamber 33 at the same time, thereby causing the exhaust gas after cooling water treatment to enter the rotating cylinder 31, and being unable to maintain the original negative pressure environment in the pretreatment tank 2. Sealing gaskets are fixedly embedded on the inner wall of the rotating cylinder 31 and on the periphery of each flow groove 35, and the sealing gaskets are slidably connected to the purification chamber 33 and the arc-shaped baffles 311. The sealing gaskets on the inner wall of the rotating cylinder 31 are slidably connected to the purification chamber 33 and the arc-shaped baffles 311, so as to ensure that the interior of the rotating cylinder 31 and the interior of the purification chamber 33 are not connected.

[0057] The bottom of the liquid storage tank 4 is rotatably connected to a plurality of rotating rods 41, and the top of the rotating rod 41 movably penetrates into the pretreatment tank 2 and is fixedly connected to a gear 42, the rotating cylinder 31 is fixedly connected to an outer gear ring 312 that meshes with the plurality of gears 42 at the same time, the rotating rod 41 is fixedly connected to a stirring blade 43 located below the blocking fixed frame 51, and the bottom bolts of the liquid storage tank 4 are installed with a motor 44 for driving the corresponding rotating rod 41 to rotate;

[0058] While the exhaust gas is filtered for the second time by cooling water, the starting motor 44 drives the corresponding rotating rod 41 to rotate rapidly, and with the help of the engagement between the gear 42 on the rotating rod 41 and the outer gear ring 312, the rotating cylinder 31 is driven to rotate at a reduced speed, thereby realizing the alternating circulation of multiple dust removal filter plates 32, and blocking large particles of impurities one by one, thereby ensuring high efficiency in the filtering and dust removal process.

[0059] Example 2: Please refer to Figure 3 , Figure 4 , Figure 8and Fig. 9 As shown, the problem of not being able to better contact the exhaust gas in the small bubbles with the cooling water, limiting the effective dissolution and removal of some small particle impurities, can be solved by the following solutions:

[0060] In this embodiment, the bottom of the pretreatment tank 2 is fixedly connected to a liquid storage tank 4, and a stirring assembly 5 is arranged inside the liquid storage tank 4. The stirring assembly 5 includes a barrier fixing frame 51 fixedly connected to the inside of the liquid storage tank 4, a connecting frame 52 is arranged above the barrier fixing frame 51, and a barrier block 53 is fixedly connected to the bottom of the connecting frame 52 corresponding to the gap of the barrier fixing frame 51. The liquid level of the cooling water is higher than the highest point of the connecting frame 52. The connecting frame 52 carries a plurality of barrier blocks 53 which are intermittently inserted into the gap on the barrier fixing frame 51, thereby further extending the residence time of the exhaust gas in the cooling water, further reducing the volume of bubbles, and significantly improving the removal effect of small particle impurities in the exhaust gas.

[0061] A plurality of rotating rods 41 are rotatably connected to the bottom of the liquid storage tank 4, and the top of the rotating rod 41 movably penetrates into the pretreatment tank 2 and is fixedly connected to a gear 42. An outer tooth ring 312 that meshes with the plurality of gears 42 is fixedly connected to the rotating cylinder 31, and a stirring blade 43 is fixedly connected to the rotating rod 41 and located below the barrier fixing frame 51. A motor 44 for driving the corresponding rotating rod 41 to rotate is bolted to the bottom of the liquid storage tank 4. The remaining synchronous rotating rods 41 are driven to rotate rapidly through the reduced speed rotation of the rotating cylinder 31 and the meshing of the outer tooth ring 312 with the remaining gears 42, and the cooling water is stirred in combination with the stirring blade 43 on the rotating rod 41 to eliminate the generation of large bubbles and improve the removal effect of small particle impurities.

[0062] A movable groove 45 connected to the pretreatment tank 2 is provided on the inner side wall of the liquid storage tank 4 and between two adjacent groups of rotating rods 41, and is used for the sliding connection of the L-shaped plate 54. The L-shaped plate 54 fixedly connected to the connecting frame 52 is slidably connected in the movable groove 45. An annular cam groove 313 is provided on the annular side wall of the rotating cylinder 31. A guide pin 55 adapted to the annular cam groove 313 is fixedly connected to the L-shaped plate 54. During the rotation of the rotating cylinder 31, the guide pins 55 on the multiple L-shaped plates 54 can reach the highest point or the lowest point in the annular cam groove 313 at the same time, thereby eliminating the problem of motion interference.

[0063] By rotating the rotating cylinder 31 and guiding the multiple guide pins 55 by the annular cam groove 313, the L-shaped plate 54 carries the connecting frame 52 and the blocking block 53 to move up and down. The multiple blocking blocks 53 are intermittently inserted into the gaps on the blocking fixing frame 51 to increase the residence time of the exhaust gas discharged from the connecting pipe 24 in the cooling water. At the same time, the volume of the bubbles is further reduced, and the stirring of the stirring blade 43 is combined to further improve the filtering effect of small particle impurities.

[0064] Example 3: Please refer to Figure 1-Figure 9 As shown, the present invention also proposes a method for using an injection molding device with an exhaust gas pretreatment and purification mechanism, comprising the following steps:

[0065] Step 1: Start the exhaust fan 25 to cooperate with the connecting pipe 24 to extract the gas in the pretreatment tank 2, so that a negative pressure environment is formed inside the pretreatment tank 2, and then extract the waste gas generated during the injection molding process of the injection molding equipment body 1 through the dust suction pipe 22, and filter the large particle impurities contained in the gas through the dust removal filter plate 32 on the rotating cylinder 31, and then discharge it into the cooling water in the liquid storage tank 4 through the connecting pipe 24 and a plurality of air outlets on the connecting pipe 24, and absorb and dissolve the small particle impurities in the cooling water;

[0066] Step 2: While the exhaust gas is filtered for the second time by cooling water, the motor 44 is started to drive the corresponding rotating rod 41 to rotate rapidly. By means of the meshing of the gear 42 on the rotating rod 41 and the outer gear ring 312, the rotating cylinder 31 is driven to rotate, and the remaining rotating rods 41 are driven to rotate rapidly. The cooling water is stirred by the stirring blades 43 on the rotating rod 41 to eliminate the generation of large bubbles and improve the removal effect of small particle impurities. Through the rotation of the rotating cylinder 31, the multiple dust filter plates 32 are driven to rotate to the air inlet end position of the connecting pipe 24 in turn, and large particle impurities are blocked alternately one by one to ensure the high efficiency of the filtering and dust removal process;

[0067] Step 3: By rotating the rotating cylinder 31 and combining the guiding cooperation of the annular cam groove 313 with the multiple guide pins 55, the L-shaped plate 54 is prompted to carry the connecting frame 52 and the blocking block 53 to reciprocate and lift, and the multiple blocking blocks 53 are intermittently inserted into the gaps on the blocking fixing frame 51 to increase the residence time of the exhaust gas discharged from the connecting pipe 24 in the cooling water, and at the same time further reduce the volume of the bubbles, and cooperate with the stirring of the stirring blade 43 to further improve the filtering effect of small particle impurities;

[0068] Step 4: Start the exhaust fan 28 and cooperate with the exhaust pipe 26 to extract the dust-removed exhaust gas in the liquid storage tank 4, and inject it into the pretreatment tank 2 through multiple diversion pipes 27, and blow the dust filter plate 32 rotated to this position in the opposite direction, and with the cooperation of the arc baffle 311 and the sealing gasket, the large particles of impurities on the dust filter plate 32 are blown into the collection chamber 36 through the air inlet, and are intercepted and collected in the collection chamber 36 by the barrier filter plate 37. The exhaust gas is then adsorbed and purified by the activated carbon filled in the collection chamber 36 and discharged, and the barrier filter plate 37 is driven to vibrate by the vibrator 38 to prevent the filter holes of the barrier filter plate 37 from being blocked.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection molding device with an exhaust gas pre-treatment and purification mechanism, comprising an injection molding device body (1), characterized in that: A pretreatment tank (2) is provided on one side of the injection molding equipment body (1), and a tank cover (21) is bolted to the top of the pretreatment tank (2), and a dust suction pipe (22) is fixedly connected between the tank cover (21) and the injection molding equipment body (1); A dust removal and purification assembly (3) is arranged inside the pretreatment tank (2), and the dust removal and purification assembly (3) comprises a rotating cylinder (31) rotatably mounted on the bottom of the pretreatment tank (2), a plurality of dust removal filter plates (32) are equidistantly mounted on the annular side wall of the rotating cylinder (31), and a purification cavity (33) fixedly connected to the tank cover (21) is arranged inside the rotating cylinder (31); The bottom of the pretreatment tank (2) is fixedly connected to a liquid storage tank (4), and a stirring assembly (5) is arranged inside the liquid storage tank (4), the stirring assembly (5) comprises a blocking fixing frame (51) fixedly connected to the inside of the liquid storage tank (4), a connecting frame (52) is arranged above the blocking fixing frame (51), and a blocking block (53) is fixedly connected to the bottom of the connecting frame (52) at a gap corresponding to the blocking fixing frame (51).

2. The injection molding device with exhaust gas pre-treatment and purification mechanism according to claim 1, characterized in that: The top of the rotating cylinder (31) is provided with a mounting groove (34) adapted to the corresponding dust removal filter plate (32); the annular outer wall of the rotating cylinder (31) is provided with a flow groove (35) connected to the corresponding mounting groove (34); the bottom of the tank cover (21) is rotatably connected with an auxiliary rotating seat (23) abutting against the dust removal filter plate (32) and the rotating cylinder (31).

3. The injection molding equipment with exhaust gas pre-treatment and purification mechanism according to claim 1, characterized in that: A connecting pipe (24) is fixedly connected to an outer wall of one side of the pretreatment tank (2), and a closed end of the connecting pipe (24) extends through the interior of the liquid storage tank (4) and is located below the barrier fixing frame (51). A plurality of air outlet holes are opened on the connecting pipe (24) and are located inside the liquid storage tank (4), and an exhaust fan (25) is fixedly provided on the connecting pipe (24).

4. The injection molding device with exhaust gas pre-treatment and purification mechanism according to claim 3, characterized in that: An exhaust pipe (26) is provided on a side of the pretreatment tank (2) away from the connecting pipe (24), and an air inlet end of the exhaust pipe (26) extends through the interior of the liquid storage tank (4) and is located above the barrier fixing frame (51). A plurality of shunt pipes (27) are fixedly connected between the exhaust pipe (26) and the pretreatment tank (2), and an exhaust fan 2 (28) is fixedly provided on the exhaust pipe (26).

5. The injection molding equipment with exhaust gas pre-treatment and purification mechanism according to claim 1, characterized in that: A collecting chamber (36) is provided inside the purification chamber (33), and a barrier filter plate (37) is fixedly connected inside the collecting chamber (36), a vibrator (38) is fixedly installed at the bottom of the barrier filter plate (37), an air inlet is provided at the bottom of one side of the collecting chamber (36) close to the exhaust pipe (26), and a dust-proof curtain (39) is fixedly connected to the top of the air inlet.

6. The injection molding device with exhaust gas pre-treatment and purification mechanism according to claim 5, characterized in that: The top of the purification chamber (33) is threadedly connected to an exhaust pipe (310) that is in communication with the collection chamber (36), and the bottom of the exhaust pipe (310) is fixedly connected to a barrier net, and the collection chamber (36) is filled with activated carbon at the top of the barrier filter plate (37).

7. The injection molding equipment with exhaust gas pre-treatment and purification mechanism according to claim 2, characterized in that: Arc-shaped baffles (311) are symmetrically fixedly connected to both sides of the purification chamber (33), and sealing gaskets are fixedly embedded on the inner side wall of the rotating cylinder (31) and located on the periphery of each circulation groove (35), and the sealing gaskets are slidably connected to the purification chamber (33) and the arc-shaped baffles (311).

8. The injection molding equipment with exhaust gas pre-treatment and purification mechanism according to claim 1, characterized in that: The bottom of the liquid storage tank (4) is rotatably connected to a plurality of rotating rods (41), and the top of the rotating rod (41) movably penetrates into the pretreatment tank (2) and is fixedly connected to a gear (42), the rotating cylinder (31) is fixedly connected to an outer gear ring (312) that meshes with the plurality of gears (42), the rotating rod (41) is fixedly connected to a stirring blade (43) below the blocking fixed frame (51), and a motor (44) for driving the corresponding rotating rod (41) to rotate is installed on the bottom bolt of the liquid storage tank (4).

9. The injection molding equipment with exhaust gas pre-treatment and purification mechanism according to claim 8, characterized in that: A movable groove (45) connected to the pretreatment tank (2) is provided on the inner side wall of the liquid storage tank (4) and between two adjacent groups of rotating rods (41); an L-shaped plate (54) fixedly connected to the connecting frame (52) is slidably connected in the movable groove (45); an annular cam groove (313) is provided on the annular side wall of the rotating cylinder (31); a guide pin (55) matched with the annular cam groove (313) is fixedly connected to the L-shaped plate (54).

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