A high-efficiency filtering device for purifying exhaust gas of a setting machine

Abstract

The utility model discloses a shaping machine waste gas purification high -efficient filter equipment, including shell and setting in the preliminary processing module, high -efficient filter module, adsorption purification module, pulse spraying mechanism and temperature control subassembly of shell inside, the left side wall of shell is equipped with the guard door, and the bottom of shell is equipped with the liquid pool, and the liquid pool right -hand end is equipped with the drain pipe, and the drain pipe right -hand end is equipped with the drain valve, and the preliminary processing module includes the air inlet pipe of setting in the left end of shell, and the air inlet pipe right -hand end is connected with the cyclone separator air inlet end conductivity, and the cyclone separator gas outlet end is connected with high -efficient filter module conductivity through the connecting pipe, and the cyclone separator bottom end is equipped with the external drain pipe, and the drain pipe bottom end is connected to the inside of liquid pool, and the device blowpipe sprays the pulse airflow to the composite filter screen, and the impurity adhered on the filter screen is blown off, and the use time of composite filter screen is increased, and the replacement frequency of composite filter screen is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of stenter exhaust gas treatment equipment, and in particular to a high-efficiency filtration device for purifying stenter exhaust gas. Background Technology

[0002] The setting machine is a key piece of equipment in the textile printing and dyeing industry. During its operation, it generates high-temperature exhaust gas containing a large amount of oil fumes, particulate matter, and volatile organic compounds. If it is directly discharged, it will cause air pollution and does not meet environmental protection standards.

[0003] Existing filtration devices with a single filtration structure (such as using only a filter screen) have low purification efficiency and cannot remove oil fumes and particulate matter at the same time, making it easy for emissions to exceed standards. At the same time, oil fumes in high-temperature exhaust gas easily adhere to the filter screen, causing frequent filter screen blockage and requiring frequent replacement, resulting in high maintenance costs and affecting production efficiency. Therefore, a high-efficiency filtration device for purifying exhaust gas from a stenter is proposed to address the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A high-efficiency filtration device for purifying exhaust gas from a stenter includes a housing and a preliminary treatment module, a high-efficiency filtration module, an adsorption purification module, a pulse jet cleaning mechanism, and a temperature control component disposed inside the housing. A protective door is provided on the left side wall of the housing, and a liquid collection tank is provided at the bottom of the housing. A drain pipe is installed at the right end of the liquid collection tank, and a drain valve is provided at the right end of the drain pipe. The preliminary treatment module includes an air inlet pipe located at the left end of the housing. The right end of the air inlet pipe is connected to the air inlet of a cyclone separator. The air outlet of the cyclone separator is connected to the high-efficiency filtration module through a connecting pipe. An external discharge pipe is installed at the bottom of the cyclone separator, and the bottom end of the discharge pipe is connected to the inside of the liquid collection tank.

[0005] Preferably, the high-efficiency filtration module includes a filter box located at the right end of the connecting pipe. The filter box contains a high-temperature resistant composite filter screen. The composite filter screen consists of a metal mesh support layer, a glass fiber filter layer, and a polytetrafluoroethylene anti-stick layer from the inside out. The composite filter screen is fixed to the filter box by bolts.

[0006] Preferably, the high-efficiency filtration module includes an adsorption box filled with high-temperature resistant honeycomb activated carbon. The left end of the adsorption box is connected to the right end of the filter box via a second connecting pipe. The right end of the filter box is connected to the left end of the exhaust hood. An exhaust fan is installed inside the exhaust hood, and a filter screen is installed inside the exhaust pipe at the right end of the exhaust hood.

[0007] Preferably, the pulse jet mechanism includes a jet pipe disposed on the rear side of the filter box, the number of jet pipes is multiple and evenly distributed on the rear side of the filter box, the rear end of the jet pipe is connected to the inside of the main pipe, and the air inlet end of the main pipe is equipped with a solenoid valve.

[0008] Preferably, the temperature control component includes a detection box disposed in the middle of the connecting pipe and a heat sink attached to the outside of the adsorption box, and the detection box contains a temperature sensor.

[0009] Compared with the prior art, the beneficial effects of this utility model are: (1) The preliminary treatment module first separates large-particle solid and liquid impurities through a cyclone separator to avoid clogging the subsequent composite filter screen and reduce the workload of the high-efficiency filter module. The composite filter screen of the high-efficiency filter module adopts the structure of "metal mesh support layer + glass fiber filter layer + polytetrafluoroethylene anti-stick layer", which has high temperature resistance and can prevent impurities from sticking and is easy to clean. At the same time, the glass fiber filter layer can efficiently intercept fine particles. The high temperature resistant honeycomb activated carbon in the adsorption box has a large specific surface area and strong adsorption capacity for harmful gases. The three layers of purification are progressively advanced to ensure that the exhaust meets the standards.

[0010] (2) The temperature control component monitors the gas temperature in real time through a temperature sensor and cools the adsorption box with a heat sink to avoid the deactivation of activated carbon due to high temperature and ensure the stability of adsorption and purification effect. The blow pipe sprays pulse airflow onto the composite filter to blow off the impurities attached to the filter, increasing the service life of the composite filter and reducing the frequency of composite filter replacement. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the left cross-sectional structure of the high-efficiency filter module of this utility model; Figure 4 This is a top view cross-sectional structural diagram of the connection point of the blowpipe of this utility model.

[0013] The following are the reference numerals in the figure: 1. Housing; 11. Protective door; 12. Liquid collection tank; 13. Drain pipe; 14. Drain valve; 2. Cyclone separator; 21. Air inlet pipe; 22. Material discharge pipe; 23. Connecting pipe; 3. Filter box; 31. Composite filter screen; 4. Second connecting pipe; 5. Adsorption box; 51. Honeycomb activated carbon; 6. Exhaust hood; 61. Filter screen; 62. Exhaust fan; 71. Pulse pipe; 72. Main pipe; 73. Solenoid valve; 8. Detection box; 81. Temperature sensor. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Please see Figure 1-4 This utility model provides an embodiment of a high-efficiency filtration device for purifying exhaust gas from a stenter, comprising a housing 1 and a preliminary treatment module, a high-efficiency filtration module, an adsorption purification module, a pulse jet mechanism, and a temperature control component disposed inside the housing 1. A protective door 11 is provided on the left side wall of the housing 1, and a liquid accumulation tank 12 is provided at the bottom of the housing 1. A drain pipe 13 is installed at the right end of the liquid accumulation tank 12, and a drain valve 14 is provided at the right end of the drain pipe 13. The preliminary treatment module includes an air inlet pipe 21 disposed at the left end of the housing 1. The right end of the air inlet pipe 21 is connected to the air inlet end of a cyclone separator 2. The air outlet end of the cyclone separator 2 is connected to the high-efficiency filtration module through a connecting pipe 23. An external discharge pipe 22 is installed at the bottom end of the cyclone separator 2, and the bottom end of the discharge pipe 22 is connected to the inside of the liquid accumulation tank 12.

[0017] The high-efficiency filtration module includes a filter box 3 located at the right end of the connecting pipe 23. The filter box 3 contains a high-temperature resistant composite filter screen 31. The composite filter screen 31 consists of a metal mesh support layer, a glass fiber filter layer, and a polytetrafluoroethylene anti-stick layer from the inside out. The composite filter screen 31 is fixed to the filter box 3 by bolts 32.

[0018] The high-efficiency filtration module includes an adsorption box 5, which is filled with high-temperature resistant honeycomb activated carbon 51. The left end of the adsorption box 5 is connected to the right end of the filter box 3 through a second connecting pipe 4. The right end of the filter box 3 is connected to the left end of the exhaust hood 6. An exhaust fan 62 is installed inside the exhaust hood 6, and a filter screen 61 is installed inside the exhaust pipe at the right end of the exhaust hood 6.

[0019] The pulse jet mechanism includes a jet pipe 71 located on the rear side of the filter box 3. The number of jet pipes 71 is multiple and they are evenly distributed on the rear side of the filter box 3. The rear end of the jet pipe 71 is internally connected to the main pipe 72. The air inlet end of the main pipe 72 is equipped with a solenoid valve 73.

[0020] The temperature control assembly includes a detection box 8 located at the middle of the connecting pipe 23 and a heat sink 82 attached to the outside of the adsorption box 5. The detection box 8 contains a temperature sensor 81.

[0021] Open the protective door 11 on the left side wall of the housing 1 and check the installation status of the preliminary treatment module, high-efficiency filtration module, adsorption purification module, pulse jet mechanism and temperature control components, such as whether the bolts 32 of the composite filter screen 31 are tight and whether there is enough activated carbon in the adsorption box 5. After confirming that everything is correct, close the protective door 11. Open the drain valve 14 on the drain pipe 13 at the right end of the liquid collection tank 12 to ensure that the liquid collection tank 12 is not blocked. Then close the drain valve 14 and start the exhaust fan 62 inside the exhaust hood 6 to create a negative pressure environment inside the housing 1.

[0022] The gas containing pollutants enters through the inlet pipe 21 at the left end of the shell 1 and first passes through the cyclone separator 2. Under the centrifugal action of the cyclone separator 2, the larger solid particles in the gas are separated and fall into the liquid collection tank 12 through the external discharge pipe 22 at the bottom of the cyclone separator 2. If the gas contains liquid impurities, the liquid impurities are also collected into the liquid collection tank 12 after being separated by the airflow, thus completing the initial impurity removal.

[0023] The pre-treated gas enters the filter box 3 of the high-efficiency filtration module through the connecting pipe 23, and passes through the high-temperature resistant composite filter 31, which consists of a metal mesh support layer, a glass fiber filter layer, and a polytetrafluoroethylene anti-stick layer from the inside out. Fine dust and suspended particles in the gas are trapped. The filtered gas enters the adsorption box 5 through the second connecting pipe 4, and comes into full contact with the high-temperature resistant honeycomb activated carbon 51 filled in the box. Harmful gas components in the gas, such as VOCs and odor substances, are adsorbed by the activated carbon. Finally, the purified gas enters the exhaust hood 6 and is discharged outside the equipment by the exhaust fan 62.

[0024] When the composite filter 31 experiences increased filtration resistance due to impurities, the pulse jet cleaning mechanism is activated: the solenoid valve 73 at the air inlet of the main pipe 72 is opened, and compressed gas is distributed through the main pipe 72 to a plurality of jet pipes 71 evenly distributed on the rear side of the filter box 3. The jet pipes 71 spray pulse airflow onto the composite filter 31, blowing off the impurities attached to the filter, increasing the service life of the composite filter 31 and reducing the replacement frequency of the composite filter 31.

[0025] During the gas flow through the connecting pipe 23, the temperature sensor 81 inside the detection box 8 monitors the gas temperature in real time. If the gas temperature is too high, the heat sink 82 attached to the outside of the adsorption box 5 quickly dissipates the heat inside the adsorption box 5 to avoid the high temperature affecting the adsorption performance of the high-temperature resistant honeycomb activated carbon 51.

[0026] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency filtration device for purifying exhaust gas from a stenter, characterized in that: The device includes a housing (1) and a preliminary treatment module, a high-efficiency filtration module, an adsorption purification module, a pulse jet blowing mechanism and a temperature control component disposed inside the housing (1). The left side wall of the housing (1) is provided with a protective door (11). The bottom of the housing (1) is provided with a liquid accumulation tank (12). The right end of the liquid accumulation tank (12) is equipped with a drain pipe (13). The right end of the drain pipe (13) is provided with a drain valve (14). The preliminary treatment module includes an air inlet pipe (21) disposed at the left end of the housing (1). The right end of the air inlet pipe (21) is connected to the air inlet of the cyclone separator (2). The air outlet of the cyclone separator (2) is connected to the high-efficiency filtration module through a connecting pipe (23). The bottom end of the cyclone separator (2) is equipped with an external discharge pipe (22). The bottom end of the discharge pipe (22) is connected to the inside of the liquid accumulation tank (12).

2. The high-efficiency filtration device for purifying exhaust gas from a stenter as described in claim 1, characterized in that: The high-efficiency filtration module includes a filter box (3) located at the right end of the connecting pipe (23). The filter box (3) contains a high-temperature resistant composite filter screen (31). The composite filter screen (31) consists of a metal mesh support layer, a glass fiber filter layer, and a polytetrafluoroethylene anti-stick layer from the inside to the outside. The composite filter screen (31) is fixed inside the filter box (3) by bolts (32).

3. The high-efficiency filtration device for purifying exhaust gas from a stenter as described in claim 1, characterized in that: The high-efficiency filtration module includes an adsorption box (5), which is filled with high-temperature resistant honeycomb activated carbon (51). The left end of the adsorption box (5) is connected to the right end of the filter box (3) through a second connecting pipe (4). The right end of the filter box (3) is connected to the left end of the exhaust hood (6). The exhaust hood (6) is equipped with an exhaust fan (62), and the exhaust pipe at the right end of the exhaust hood (6) is equipped with a filter screen (61).

4. The high-efficiency filtration device for purifying exhaust gas from a stenter as described in claim 1, characterized in that: The pulse jet mechanism includes a jet pipe (71) disposed on the rear side of the filter box (3). The number of jet pipes (71) is multiple and they are evenly distributed on the rear side of the filter box (3). The rear end of the jet pipe (71) is connected to the inside of the main pipe (72). The air inlet end of the main pipe (72) is equipped with a solenoid valve (73).

5. The high-efficiency filtration device for purifying exhaust gas from a stenter as described in claim 1, characterized in that: The temperature control assembly includes a detection box (8) located at the middle of the connecting pipe (23) and a heat sink (82) attached to the outside of the adsorption box (5). The detection box (8) contains a temperature sensor (81).

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