Waste gas purification system

Abstract

The waste gas purification system comprises a first box body and a second box body, the first box body is sequentially provided with a waste gas inlet, a waste gas buffer area, a primary filter, an adsorption purifier, a high-efficiency filter, a buffer explosion venting area and a waste gas outlet, a negative pressure fan is arranged in the second box body, and a fan air inlet and a fan air outlet are formed in the second box body. The fan air inlet is communicated with the waste gas outlet in a sealed mode, and the negative pressure fan is used for enabling waste gas to enter from the waste gas inlet and be exhausted from the fan air outlet. According to the waste gas purification system, local waste gas accumulation is rapidly reduced, efficient purification and safe emission of waste gas are achieved through multi-stage purification treatment, and the working environment and the air quality are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification, in particular to a waste gas purification system. Background Art

[0002] In enclosed spaces such as laboratories and testing rooms, the problem of low-concentration organic waste gas accumulation has become increasingly prominent. These waste gases may come from chemical reactions, reagent volatilization, or equipment leakage during experiments. They not only pollute the working environment but also pose health risks to employees. Due to the lack of effective natural ventilation, these waste gases are often difficult to be discharged in time, thus accumulating continuously indoors.

[0003] According to the national mandatory requirements for occupational health and safety, local ventilation must be implemented in enclosed spaces to ensure that the air quality meets the standards and guarantee the safety of employees. However, in traditional laboratories and testing rooms, since they need to maintain constant temperature and pressure and cannot open windows, they usually rely on fresh air systems for ventilation. The problem is that the air outlet positions of fresh air systems are fixed, making it difficult to completely solve the problem of waste gas accumulation in enclosed spaces. At the same time, fresh air systems mostly operate by diluting and discharging indoor waste gases and lack the ability to effectively treat and purify waste gases.

[0004] In addition, the particularity of enclosed spaces also poses higher requirements on ventilation equipment. Due to limited space and possible safety hazards such as flammability and explosiveness, ventilation equipment must have characteristics such as high efficiency, safety, and reliability. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a waste gas purification system. A negative pressure fan is provided in the second box body of the system. Through the negative pressure generated by the negative pressure fan, the waste gas in the enclosed space is actively sucked into the first box body for purification treatment, and it is ensured that the fresh air after purification treatment is discharged from the second box body in time. After the waste gas is actively sucked by the negative pressure fan and treated and purified, the utility model effectively solves the problem of low-concentration organic waste gas accumulation in enclosed spaces.

[0006] The utility model is specifically implemented by the following technical solutions:

[0007] A waste gas purification system, characterized in that it includes a first box body and a second box body. The first box body is successively provided with a waste gas inlet, a waste gas buffer zone, a primary filter, an adsorption purifier, a high-efficiency filter, a buffer explosion relief zone, and a waste gas outlet. A negative pressure fan is provided in the second box body, which is provided with a fan air inlet and a fan air outlet. The fan air inlet is hermetically connected to the waste gas outlet. The negative pressure fan is used to make the waste gas enter from the waste gas inlet and be discharged from the fan air outlet.

[0008] In some embodiments, it further includes a skid-mounted base, and the first box body and the second box body are arranged on the skid-mounted base.

[0009] In some embodiments, it further includes an explosion venting device, and the explosion venting device is arranged on the first box body to achieve the explosion venting function of the buffer explosion venting area.

[0010] In some embodiments, the primary filter is a structure composed of filter media arranged facing the wind inside the outer frame.

[0011] In some embodiments, the adsorption purifier includes a perforated plate and a plurality of activated carbon barrels. The activated carbon barrels are of an annular cylindrical structure. The outer side wall and the inner side wall of the annular cylindrical structure are both provided with round holes. The bottom of the annular cylindrical structure is blocked by a plug, and the top is provided with an annular cover. The annular cover is provided with carbon barrel fixing columns. The annular space formed by the outer side wall and the inner side wall is filled with activated carbon or other adsorbents. The perforated plate is provided with perforated plate fixing holes, and the carbon barrel fixing columns are connected to the perforated plate fixing holes so that a plurality of activated carbon barrels are distributed on the perforated plate.

[0012] In some embodiments, the high-efficiency filter is composed of filter media arranged inside a rectangular frame.

[0013] In some embodiments, a docking flange is provided at the waste gas inlet, and the docking flange is used to dock with the waste gas collection and aggregation pipe.

[0014] In some embodiments, an exhaust air box is further arranged inside the second box body. The exhaust air box is provided with an air inlet hose and an air outlet hose. The air inlet hose is connected to the air inlet of the fan, and the air outlet hose is connected to the air outlet of the fan. The inner side wall of the exhaust air box is provided with the fan blades of the negative pressure fan, and the outer side wall of the exhaust air box is provided with a negative pressure fan power device for providing power to the fan blades.

[0015] In some embodiments, the internal structure of the exhaust air box is a "6"-shaped structure.

[0016] In some embodiments, a muffler box and a louver are provided on the second box body.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] When the negative pressure fan of the present utility model operates, it actively adsorbs waste gas and introduces it into the system. The waste gas first enters the waste gas buffer zone for preliminary mixing and equalization of flow, and then passes through the primary filter to remove large particulate matter, reducing the subsequent purification burden. Next, the adsorption purifier uses adsorption materials to efficiently capture and purify harmful substances in the waste gas. The high-efficiency filter further finely filters to remove tiny particulate matter, ensuring that the waste gas reaches a high cleanliness level. In addition, the design of the buffer explosion relief zone provides safety protection to prevent secondary combustion or explosion under abnormal conditions. The waste gas purification system of the present utility model not only rapidly reduces local waste gas accumulation, but also achieves efficient purification and safe discharge of waste gas through multi-stage purification treatment, significantly improving the working environment and air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the overall structure of the waste gas purification system of the present utility model.

[0020] Figure 2 It is a top view schematic diagram of the overall structure of the waste gas purification system of the present utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the primary filter of the present utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the high-efficiency filter of the present utility model.

[0023] Figure 5 is Figure 4 An enlarged partial view of location A.

[0024] Figure 6 It is a schematic diagram of the structure of the activated carbon barrel of the present utility model.

[0025] Figure 7 It is a three-dimensional structure schematic diagram of the outer frame in the primary filter of the present utility model.

[0026] Figure 8 It is a three-dimensional structure schematic diagram of the flower plate of the present utility model.

[0027] Figure 9 It is a three-dimensional structure schematic diagram of the activated carbon barrel of the present utility model.

[0028] Figure 10 It is a cross-sectional view schematic diagram of the exhaust air box of the present utility model.

[0029] Figure 11 It is a front view structure schematic diagram of the interior of the second box body of the present utility model.

[0030] Figure 12 It is a top view structure schematic diagram of the interior of the second box body of the present utility model.

[0031] Among them, 1. The first box body; 11. Exhaust gas inlet; 12. Exhaust gas buffer zone; 13. Primary filter; 131. Outer frame; 132 / 153 Filter material; 14. Adsorption purifier; 141. Activated carbon barrel; 1411. Carbon barrel fixing column; 1412. Circular cover; 1413. Circular hole; 1414. Plug; 142. Flower plate; 1421. Carbon barrel fixing hole; 1422. Flower plate circular hole; 1423. Flower plate fixing hole; 15. High-efficiency filter; 151. Rectangular frame; 152. Partition board; 153. Filter material; 16. Explosion relief area; 161. Blasting device; 17. Exhaust gas outlet; 21. Fan air inlet; 22. Air inlet hose; 23. Exhaust air box; 231. Shock absorber; 24. Air outlet hose; 251. Fan blade; 252. Rotating shaft; 253. Belt; 254. Motor; 26. Sound-absorbing cotton; 27. Louver; 28. Fan air outlet; 3. Skid-mounted base. Detailed implementation mode

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0033] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0034] The following further describes the present utility model in detail with reference to the accompanying drawings:

[0035] See Figures 1 to 12 , an embodiment of the present utility model provides an exhaust gas purification system, including a first box body 1 and a second box body 2. The first box body 1 is successively provided with an exhaust gas inlet 11, an exhaust gas buffer zone 12, a primary filter 13, an adsorption purifier 14, a high-efficiency filter 15, a buffer explosion relief area 16 and an exhaust gas outlet 17. A negative pressure fan is provided in the second box body 2, and a fan air inlet 21 and a fan air outlet 29 are provided thereon. The fan air inlet 21 is hermetically connected to the exhaust gas outlet 17. The negative pressure fan is used to make the exhaust gas enter from the exhaust gas inlet 11 and be discharged from the fan air outlet 29.

[0036] In some embodiments, it further includes a skid-mounted base 3, and the first box body 1 and the second box body 2 are arranged on the skid-mounted base 3. The skid-mounted base 3 can be specifically designed as a rectangular structure formed by welding channel steel and steel plates, and its bottom can be equipped with wheels or slide rails for easy movement. In addition, this skid-mounted base also integrates a control system and a power distribution system, enabling operators to comprehensively monitor and operate the waste gas purification system at the same centralized location, thereby significantly improving work efficiency and safety.

[0037] In some embodiments, it further includes an explosion relief device, and the explosion relief device is arranged on the first box body 1 to realize the explosion relief function of the buffer explosion relief area 16. The specific explosion relief device 161 is a rupture disc or a rupture membrane or other explosion relief valve bodies.

[0038] In some embodiments, the primary filter 13 is a structure composed of filter media 132 arranged against the wind inside the outer frame 131. The outer frame 131 can be made of a variety of materials such as metal, plastic, paper, or leather. The filter media 132 can be composed of chemical fibers, non-woven fabrics, polypropylene, polyethylene, or polyamide, etc. In addition, the shape of the filter media 132 inside the outer frame 131 can be designed into various forms such as V-shaped folds or bag-shaped according to actual needs.

[0039] In some embodiments, the adsorption purifier 14 includes a plurality of activated carbon barrels 141 and a perforated plate 142. The activated carbon barrels 141 are of an annular cylindrical structure. Circular holes 1413 are provided on both the outer side wall and the inner side wall of the annular cylindrical structure. The bottom of the annular cylindrical structure is blocked by a plug 1414, and a circular ring cover 1412 is provided at the top. Carbon barrel fixing columns 1411 are provided on the circular ring cover 1412. The annular space formed by the outer side wall and the inner side wall is filled with activated carbon or other adsorbents. Carbon barrel fixing holes 1421 are provided on the perforated plate 142, and the carbon barrel fixing columns 1411 are connected to the carbon barrel fixing holes 1421 so that a plurality of activated carbon barrels 141 are distributed on the perforated plate 142. The perforated plate also has perforated plate circular holes 1422 and perforated plate fixing holes 1423. The perforated plate circular holes 1422 are used as the gas outlet after being adsorbed and purified by the activated carbon barrels 141, and the perforated plate fixing holes 1423 are used to cooperate with screws to fix the perforated plate to the first box body 1. Specifically, the circular ring cover 1412 and the plug 1414 are fixedly connected to the annular cylindrical structure by welding, threaded connection, or other means.

[0040] In some embodiments, the high-efficiency filter 15 is composed of filter media 153 arranged inside a rectangular frame 151. Specifically, it can be that a number of partition plates 152 are horizontally supported inside the rectangular frame 151, and filter media 153 are filled in each partition gap. Or the filter media 153 are arranged against the wind inside the rectangular frame 151. The filter media 153 can be chemical fibers, non-woven fabrics, polypropylene, polyethylene, polyamide, or PTEE filter media, etc.

[0041] In some embodiments, a docking flange is provided at the waste gas inlet 11, and the docking flange can be used to dock with the waste gas collection and aggregation pipe.

[0042] In some embodiments, an exhaust air box 23 is further provided in the second box body 2. An air inlet hose 22 and an air outlet hose 24 are provided on the exhaust air box 23. The air inlet hose 22 is connected to the air inlet of the fan 21, and the air outlet hose 24 is connected to the air outlet of the fan 28. A fan blade 251 of the negative pressure fan is provided on the inner side wall of the exhaust air box 23, and a negative pressure fan power device for providing power to the fan blade 251 is provided on the outer side wall of the exhaust air box. Specifically, the negative pressure fan power device can drive the belt 253 to rotate through the motor 254, transmit the rotational force to the rotating shaft 252 connected to the fan blade 251, and then drive the fan blade 251 to rotate to generate a suction and blowing force, thereby effectively adsorbing and discharging the waste gas.

[0043] See Figure 10 , the internal structure of the exhaust air box 23 is designed in a shape of "6". It should be noted that the structure of the exhaust air box is not fixed, but can be flexibly adjusted according to the actual installation position of the negative pressure fan and the required functions. Taking Figure 11 and Figure 12 as an example, the exhaust air box 23 in the second box body 2 shown in these two figures adopts a "6" - shaped design for both its internal and external structures, and shock absorbers 231 are equipped at the bottom of the exhaust air box. In addition, sound - absorbing cotton 26 is filled in the side wall of the second box body 2, and louvers 27 are also provided on the side wall to provide good ventilation effect for the second box body 2.

[0044] In some embodiments, inspection doors may also be provided on the first box body 1 and the second box body 2.

[0045] When the waste gas purification system of the present utility model is in use, first, by using the skid - mounted base 3, the system can be conveniently moved to the location where waste gas accumulates, or the waste gas inlet can be directly and hermetically connected to the waste gas collection and aggregation pipe (such as the exhaust pipe of the experimental platform or other waste gas collection port pipes inside the laboratory). Next, start the negative pressure fan, and the system will, under the drive of negative pressure, guide the waste gas to enter orderly from the waste gas inlet 11. After the waste gas enters the system, it will first pass through the waste gas buffer zone 12 for buffer particle sedimentation, and then remove larger particles through the primary filter 13. Subsequently, the waste gas enters the adsorption purifier 14, where harmful substances will be effectively adsorbed and purified. Immediately afterwards, the high - efficiency filter 15 will further finely filter to remove fine particles of 0.5 microns and above, ensuring that the waste gas reaches a high cleanliness level.

[0046] In addition, the system is specifically provided with a buffer explosion relief area 16, which is equipped with a rupture disc. When the internal pressure of the system reaches a positive pressure of 0.01 MPA, the rupture disc will rupture in time to release the energy generated by fire or explosion, thus effectively preventing the occurrence of secondary combustion or explosion accidents and ensuring the safety of personnel and property.

[0047] Finally, the waste gas after this series of efficient purification treatments will be safely discharged through the air outlet 29 of the fan for recycling in the laboratory, or the air outlet 29 of the fan will be connected to the air outlet of the fresh air system to discharge the waste gas outdoors, so as to achieve the environmental protection and high-efficiency goals of waste gas treatment.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An exhaust gas purification system, characterized in that, It includes a first box body and a second box body. The first box body is successively provided with an exhaust gas inlet, an exhaust gas buffer zone, a primary filter, an adsorption purifier, a high-efficiency filter, a buffer explosion venting zone and an exhaust gas outlet. A negative pressure fan is arranged in the second box body, and it is provided with a fan air inlet and a fan air outlet. The fan air inlet is hermetically communicated with the exhaust gas outlet. The negative pressure fan is used to make the exhaust gas enter from the exhaust gas inlet and be discharged from the fan air outlet.

2. The exhaust gas purification system according to claim 1, wherein It further includes a skid-mounted base, and the first box body and the second box body are arranged on the skid-mounted base.

3. The exhaust gas purification system according to claim 1, characterized in that, It further includes an explosion venting device which is arranged on the first box body to realize the explosion venting function of the buffer explosion venting zone.

4. The exhaust gas purification system according to claim 1, characterized in that, The primary filter is a structure composed of filter materials arranged against the wind in a frame.

5. The exhaust gas purification system according to claim 1, characterized in that, The adsorption purifier includes a perforated plate and a plurality of activated carbon barrels. The activated carbon barrels are of an annular cylindrical structure. Round holes are provided on both the outer side wall and the inner side wall of the annular cylindrical structure. The bottom of the annular cylindrical structure is blocked by a plug, and a ring cover is provided at the top. Carbon barrel fixing columns are provided on the ring cover. An annular space formed by the outer side wall and the inner side wall is filled with activated carbon. Perforated plate fixing holes are provided on the perforated plate, and the carbon barrel fixing columns are connected with the perforated plate fixing holes so that a plurality of activated carbon barrels are distributed on the perforated plate.

6. The exhaust gas purification system according to claim 1, characterized in that, The high-efficiency filter is composed of filter materials arranged in a rectangular frame.

7. The exhaust gas purification system according to claim 1, characterized in that A docking flange is provided at the exhaust gas inlet, and the docking flange is used to dock with an exhaust gas collection and aggregation pipe.

8. The exhaust gas purification system according to claim 1, characterized in that, An exhaust air box is further arranged in the second box body. The exhaust air box is provided with an air inlet hose and an air outlet hose. The air inlet hose is connected with the fan air inlet, and the air outlet hose is connected with the fan air outlet. Fan blades of the negative pressure fan are provided on the inner side wall of the exhaust air box, and a negative pressure fan power device for providing power to the fan blades is provided on the outer side wall of the exhaust air box.

9. The exhaust gas purification system according to claim 8, characterized in that, The internal structure of the exhaust air box is a "6"-shaped structure.

10. The exhaust gas purification system according to claim 1, characterized in that, A silencer box and a louver are provided on the second box body.

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