Waste gas cleaning and filtering device

Abstract

The utility model discloses a waste gas cleaning and filtering device which comprises a first filtering part and a second filtering part, the first filtering part comprises a first main body and a first filter element arranged in the first main body, and the first main body is connected with the drying machine and the second filtering part and is provided with an oil discharging pipe used for discharging oil residues; the second filtering part comprises a second main body and a second filter element arranged in the second main body, and the second main body is connected with the first filtering part and the drying machine and is provided with a powder discharging pipe used for discharging powder.

Description

Technical Field

[0001] The utility model relates to the technical field of desiccants, in particular to an exhaust gas cleaning and filtering device. Background Art

[0002] Injection molding dryer is a commonly used industrial drying equipment, mainly used to dry wet materials through hot air. In the raw material processing, the injection molding dryer blows constant high-temperature air into the drying barrel through the drying fan, and after baking the raw materials, the original moisture of the raw materials in the barrel is taken away to achieve the purpose of removing the moisture contained in the raw materials. The wind blown out by the fan is heated by electric heating and becomes high-temperature dry hot air. Through the screen protector and the hole screen, the hot air can be evenly dispersed in the raw materials in the drying barrel.

[0003] Existing injection molding dryers not only produce exhaust gas containing harmful substances such as dust particles and non-methane hydrocarbons during the injection molding process, but may also be accompanied by the production of oil, and some plastic dust will be blown out, causing environmental pollution and causing damage to the human body. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes an exhaust gas cleaning and filtering device.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] An exhaust gas cleaning filter device comprises a first filter part and a second filter part;

[0007] The first filter part comprises a first main body and a first filter element arranged inside the first main body, wherein the first main body is connected to the dryer and the second filter part and has an oil discharge pipe for discharging oil residue;

[0008] The second filter part comprises a second main body and a second filter element arranged inside the second main body. The second main body is connected to the first filter part and the dryer and has a powder discharge pipe for discharging powder.

[0009] Preferably, an oil collecting assembly is provided at the bottom of the oil drain pipe, and the oil collecting assembly includes an oil collecting shell provided on the oil drain pipe, and a detachable oil drain cover provided on the oil collecting shell. Through the above improvements, the waste oil generated by the dryer can enter the oil collecting shell through the oil drain pipe and be collected in the oil collecting shell. When the waste oil needs to be discharged, it is only necessary to remove the oil drain cover to discharge the waste oil from the oil collecting shell.

[0010] Preferably, a detachable oil drain base is provided at the bottom of the first main body, the oil drain pipe is formed on the oil drain base, and a fixing bracket for fixing the first filter element is formed on the oil drain base, and an oil drain groove connected to the oil drain pipe is formed on the fixing bracket. Through the above improvements, the first filter element is inserted on the fixing bracket, which ensures the stability of the installation of the first filter element, and the waste oil can flow along the fixing bracket to the oil drain pipe, and the waste oil passes through the oil drain groove and enters the oil drain pipe for collection.

[0011] Preferably, the oil collecting shell and the oil drain cover are made of transparent material. Through the above improvements, the amount of oil inside the oil collecting shell can be directly observed, which is more convenient for daily cleaning.

[0012] Preferably, the second body is also provided with an air intake assembly for external air to enter, and the air intake assembly includes a detachable air intake cover arranged on the top of the second body, an air intake filter element placed in the air intake cover, and a filter screen arranged between the air intake cover and the air intake filter element. Through the above improvements, wind can enter from the air intake cover, and the incoming air will be filtered by the filter screen for the first time, and then filtered by the air intake filter element for the second time, to ensure that the incoming air will not bring in external dust or impurities.

[0013] Preferably, the second filter element is connected to the air inlet hood, and the air inlet filter element abuts against the top of the second filter element. Through the above improvement, the top of the second filter element abuts against the air inlet filter element, preventing exhaust gas or plastic dust from flowing into the gap between the air inlet hood and the second filter element. After the air passes through the air inlet filter element, it is filtered by the second filter element, further improving the cleanliness of the air.

[0014] Preferably, an air blowing pipe is arranged around the second filter element, an air inlet valve for supplying air to the air blowing pipe is formed on the second body, and a plurality of air outlet holes are arranged on the air blowing pipe. Through the above improvement, the air inlet valve can supply air to the air blowing pipe, and the air in the air blowing pipe can be discharged from the air outlet holes and act on the second filter element, thereby blowing off the plastic dust attached to the second filter element.

[0015] Preferably, a second air inlet pipe connected to the first filter unit is formed on the second body, and is used to connect to the second exhaust pipe of the dryer, and a drying filter element is arranged in the second air inlet pipe and the second exhaust pipe. Through the above improvement, the drying filter element can absorb moisture carried in the exhaust gas, ensuring that the hot air entering the dryer again does not carry moisture, further improving the drying effect.

[0016] Preferably, an induced draft fan is provided between the second exhaust pipe and the dryer, the air inlet end of the induced draft fan is connected to the second exhaust pipe, and the air outlet end of the induced draft fan is connected to the dryer. Through the above improvement, the induced draft fan can extract the hot air inside the second body and re-input it into the dryer, thereby realizing the recycling of the hot air, which can not only reduce the power consumption of the dryer, but also improve the drying effect.

[0017] Preferably, a mounting groove is formed in the second body, and the second filter element is inserted in the mounting groove. Through the above improvement, the second filter element is inserted in the mounting groove, which not only ensures the stability of the second filter element installation, but also makes it easier to install, thereby improving assembly efficiency.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The dryer is connected through the first filter part, the exhaust gas discharged from the dryer is filtered for the first time, and the waste oil discharged from the dryer is collected. The exhaust gas after the first filtration enters the second filter part, the second filter part filters the exhaust gas for the second time, and collects the plastic dust generated by the dryer, and re-inputs the filtered hot air into the dryer, realizing the recycling of heat energy and saving electricity costs. At the same time, it can reduce air pollution, so that there is no odor and dust when the dryer is running and drying, which greatly improves the air quality in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the first filter part of the utility model;

[0022] Figure 3 It is an exploded view of the first filter part of the utility model;

[0023] Figure 4 It is a cross-sectional view of the first filter portion of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the oil drain base of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the second filter part of the utility model;

[0026] Figure 7 is a cross-sectional view of the second filter portion of the utility model;

[0027] Figure 8 This is an exploded view of the air inlet assembly of the utility model;

[0028] Fig. 9It is a schematic diagram of the structure inside the second main body of the utility model;

[0029] In the figure: 1, first filter part; 2, second filter part; 3, dryer; 4, induced draft fan; 101, first main body; 102, first filter element; 103, first air inlet pipe; 104, first exhaust pipe; 105, oil drain pipe; 106, oil collection assembly; 107, oil collection shell; 108, oil drain cover; 109, oil drain base; 110, fixed bracket; 111, oil drain groove; 112, hook; 201, second main body; 202, second filter element; 203, second air inlet pipe; 204, second exhaust pipe; 205, powder drain pipe; 206, air inlet assembly; 207, air inlet cover; 208, air inlet filter element; 209, filter screen; 210, air blowing pipe; 211, air inlet valve; 212, air outlet; 213, drying filter element; 214, mounting groove; 215, top cover; 216, mounting hole; DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0032] like Figure 1-9 As shown, an exhaust gas cleaning filter device includes a first filter part 1 and a second filter part 2. The first drying part is connected to the exhaust end of the dryer 3, and the second filter part 2 is connected to the exhaust end of the first filter part 1 and connected to the air inlet end of the dryer 3.

[0033] Specifically, the first filter unit 1 includes a first main body 101, a first filter element 102 arranged inside the first main body 101, the first main body 101 is connected to the dryer 3 and the second filter unit 2, and a first air inlet pipe 103 connected to the dryer 3, a first exhaust pipe 104 connected to the second filter unit 2, and an oil drain pipe 105 for discharging oil residue are formed on the first main body 101. The waste gas, waste oil, and plastic dust generated by the dryer first enter the first main body 101 through the first air inlet pipe 103, the first filter element 102 performs a first filtration on the waste gas, and the waste oil is discharged through the oil drain pipe 105. In addition, the waste gas and plastic dust that have passed the first filtration enter the second main body 201 through the first exhaust pipe 104.

[0034] Furthermore, the second filter unit 2 includes a second main body 201, a second filter element 202 arranged inside the second main body 201, the second main body 201 is connected to the first filter unit 1 and the dryer 3, and a second air inlet pipe 203 connected to the first filter unit 1, a second exhaust pipe 204 for connecting to the dryer 3, and a powder exhaust pipe 205 for discharging powder is formed on the second main body 201. The waste gas and plastic dust enter the second main body 201 through the second air inlet pipe 203, and the second filter element 202 performs secondary filtration on the waste gas, and the plastic dust is discharged from the powder exhaust pipe 205. The filtered waste gas can be returned to the dryer 3 through the second exhaust pipe 204 to dry the plastic, thereby realizing the recycling of heat energy, saving electricity consumption costs, and reducing air pollution, so that when the dryer 3 is running and drying, there is no odor and no dust floating, which greatly improves the air quality in the workshop.

[0035] like Figure 2-5 As shown, further explanation of the implementation method of the first filter unit 1 in this embodiment, the first air inlet pipe 103 is arranged on the side of the first main body 101, the first exhaust pipe 104 is arranged on the top of the first main body 101, the oil drain pipe 105 is arranged at the bottom of the first main body 101, and the first filter element 102 is arranged in the first main body 101.

[0036] Furthermore, an oil collecting assembly 106 is provided at the bottom of the oil drain pipe 105, and the oil collecting assembly 106 includes an oil collecting shell 107 arranged on the oil drain pipe 105, and a detachable oil drain cover 108 arranged on the oil collecting shell 107. The oil collecting shell 107 is detachably sleeved on the oil drain pipe 105, and the oil collecting shell 107 and the oil drain cover 108 are threadedly matched. The waste oil generated by the dryer 3 can enter the oil collecting shell 107 through the oil drain pipe 105 and be collected in the oil collecting shell 107. When the waste oil needs to be discharged, it only needs to rotate the oil drain cover 108 to disassemble it, and the waste oil can be discharged from the oil collecting shell 107.

[0037] Specifically, a detachable oil drain base 109 is provided at the bottom of the first main body 101, and the oil drain base 109 is connected to the first main body 101 by a clamp, the oil drain pipe 105 is formed on the oil drain base 109, and a fixing bracket 110 for fixing the first filter element 102 is formed on the oil drain base 109, and an oil drain groove 111 connected to the oil drain pipe 105 is formed on the fixing bracket 110. The first filter element 102 is inserted on the fixing bracket 110, which ensures the stability of the installation of the first filter element 102, and the waste oil can flow along the fixing bracket 110 to the oil drain pipe 105, and the waste oil passes through the oil drain groove 111 and enters the oil drain pipe 105 for collection.

[0038] Preferably, the oil collecting shell 107 and the oil drain cover 108 are made of transparent material, so that the amount of oil inside the oil collecting shell 107 can be directly observed, which is more convenient for daily cleaning.

[0039] Preferably, a hook 112 is provided on the side of the first body 101 to facilitate installation of the first body 101 .

[0040] like Figure 6-9 As shown, as a further explanation of the implementation method of the second filter part 2 in this embodiment, the second air inlet pipe 203 is arranged on one side of the second main body 201, and the powder discharge pipe 205 is arranged on the other side of the second main body 201. In addition, the air inlet assembly 206 is arranged on the top of the second main body 201, and the second exhaust pipe 204 is arranged at the bottom of the second main body 201. The second filter element 202 is arranged in the second main body 201 and is located between the second air inlet pipe 203 and the powder discharge pipe 205.

[0041] The second main body 201 is also provided with an air inlet assembly 206 for allowing external air to enter. The second main body 201 is provided with a detachable top cover 215, which is connected to the second main body 201 by a clamp. The top cover 215 is provided with an air inlet assembly 206, and the air inlet assembly 206 includes a detachable air inlet cover 207 arranged on the top of the second main body 201, an air inlet filter 208 placed in the air inlet cover 207, and a filter 209 arranged between the air inlet cover 207 and the air inlet filter 208. Wind can enter from the air inlet cover 207, and the incoming air will be filtered by the filter 209 for the first time, and then filtered by the air inlet filter 208 for the second time, to ensure that the incoming air will not bring in external dust or impurities, and the air inlet assembly 206 can be connected to the fresh air system to ensure that sufficient air enters.

[0042] Furthermore, the second filter element 202 is connected to the air inlet hood 207, and the air inlet filter element 208 abuts against the top of the second filter element 202, and the top of the second filter element 202 abuts against the air inlet filter element 208, thereby preventing exhaust gas or plastic dust from flowing into the gap between the air inlet hood 207 and the second filter element 202. After the air passes through the air inlet filter element 208, it is filtered through the second filter element 202, thereby further improving the cleanliness of the air.

[0043] In addition, an air blowing pipe 210 is arranged around the second filter element 202, and an air inlet valve 211 for supplying air to the air blowing pipe 210 is formed on the second main body 201, and a plurality of air outlet holes 212 are arranged on the air blowing pipe 210. The air inlet valve 211 can supply air to the air blowing pipe 210, and the air in the air blowing pipe 210 can be discharged from the air outlet holes 212 and act on the second filter element 202, thereby blowing off the plastic dust attached to the second filter element 202.

[0044] A drying filter element 213 is disposed in the second air inlet pipe 203 and the second air outlet pipe 204. The drying filter element 213 can absorb moisture carried in the exhaust gas to ensure that the hot air re-entering the dryer 3 does not carry moisture, thereby further improving the drying effect.

[0045] An induced draft fan 4 is provided between the second exhaust pipe 204 and the dryer 3. The air inlet end of the induced draft fan 4 is connected to the second exhaust pipe 204, and the air outlet end of the induced draft fan 4 is connected to the dryer 3. The induced draft fan 4 can extract the hot air inside the second main body 201 and re-input it into the dryer 3, thereby realizing the recycling of the hot air, which can not only reduce the power consumption of the dryer 3, but also improve the drying effect.

[0046] In addition, the powder discharge pipe 205 can be connected to a discharge valve to extract the plastic powder from the second body 201, and a collection shell can also be installed to collect the plastic powder.

[0047] Preferably, a mounting groove 214 is formed in the second main body 201, and the second filter element 202 is inserted in the mounting groove 214. The second filter element 202 is inserted in the mounting groove 214, which not only ensures the stability of the installation of the second filter element 202, but also facilitates installation to improve assembly efficiency.

[0048] Preferably, a mounting hole 216 for connecting to the induced draft fan 4 is formed on the circumference of the powder discharge pipe 205 .

[0049] Preferably, the first filter unit 1 and the second filter unit 2 are connected to the dryer 3 via a hose.

[0050] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An exhaust gas cleaning and filtering device, characterized in that: It comprises a first filter part (1) and a second filter part (2); The first filter part (1) comprises a first main body (101) and a first filter element (102) arranged inside the first main body (101); the first main body (101) is connected to the dryer (3) and the second filter part (2), and has an oil discharge pipe (105) for discharging oil residue; The second filter unit (2) comprises a second main body (201) and a second filter element (202) arranged inside the second main body (201); the second main body (201) is connected to the first filter unit (1) and the dryer (3), and has a powder discharge pipe (205) for discharging powder.

2. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: An oil collecting assembly (106) is arranged at the bottom of the oil drain pipe (105), and the oil collecting assembly (106) comprises an oil collecting shell (107) arranged on the oil drain pipe (105), and a detachable oil drain cover (108) arranged on the oil collecting shell (107).

3. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: A detachable oil drain base (109) is provided at the bottom of the first main body (101); the oil drain pipe (105) is formed on the oil drain base (109); a fixing bracket (110) for fixing the first filter element (102) is formed on the oil drain base (109); and an oil drain groove (111) communicating with the oil drain pipe (105) is formed on the fixing bracket (110).

4. The exhaust gas cleaning and filtering device according to claim 2, characterized in that: The oil collecting shell (107) and the oil drain cover (108) are made of transparent material.

5. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: The second main body (201) is also provided with an air intake assembly (206) for allowing external air to enter, and the air intake assembly (206) comprises a detachable air intake cover (207) arranged on the top of the second main body (201), an air intake filter (208) placed in the air intake cover (207), and a filter screen (209) arranged between the air intake cover (207) and the air intake filter (208).

6. The exhaust gas cleaning and filtering device according to claim 5, characterized in that: The second filter element (202) is connected to the air inlet cover (207), and the air inlet filter element (208) is in contact with the top of the second filter element (202).

7. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: An air blowing pipe (210) is arranged around the second filter element (202), an air inlet valve (211) for supplying air to the air blowing pipe (210) is formed on the second main body (201), and a plurality of air outlet holes (212) are arranged on the air blowing pipe (210).

8. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: A second air inlet pipe (203) connected to the first filter unit (1) is formed on the second main body (201) and is used to connect to a second exhaust pipe (204) of the dryer (3); a drying filter element (213) is provided in the second air inlet pipe (203) and the second exhaust pipe (204).

9. The exhaust gas cleaning and filtering device according to claim 8, characterized in that: An induced draft fan (4) is provided between the second exhaust pipe (204) and the dryer (3); an air inlet end of the induced draft fan (4) is connected to the second exhaust pipe (204), and an air outlet end of the induced draft fan (4) is connected to the dryer (3).

10. The exhaust gas cleaning and filtering device according to claim 1, characterized in that: A mounting groove (214) is formed in the second main body (201), and the second filter element (202) is inserted into the mounting groove (214).

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