Industrial kiln flue gas dust removal control device

Abstract

The utility model provides an industrial kiln flue gas dust removal control device, which relates to the field of flue gas treatment and comprises a main body mechanism, the main body mechanism comprises a box body, the bottom of the box body is fixedly communicated with a gas inlet pipe, and the left side of the top of the box body is fixedly communicated with an exhaust pipe; the air inlet pipe and the exhaust pipe are respectively used for adding smoke into the box body and exhausting the smoke, the filter unit is used for filtering impurities in the smoke, and meanwhile, the filter unit is convenient to mount and dismount, so that the filter unit is convenient to dismount and clean, the filtered impurities are prevented from blocking net gaps too much, and the service life of the filter unit is prolonged. And by arranging a backflow pipe, a three-way pipe and an input pipe, flue gas which is not cooled and can be reused can flow back into the gas inlet pipe and is added into the box body again through the gas inlet pipe, so that the flue gas is reused, and heat waste is further reduced.

Description

Technical Field

[0001] The utility model belongs to the field of flue gas treatment, and specifically relates to a flue gas dust removal control device for industrial furnaces. Background Technique

[0002] An industrial furnace is a device used for high-temperature heating and processing of materials. During the operation of an industrial furnace, fuel burns at high temperature, and carbon, hydrogen, and other elements in it react with oxygen to generate carbon dioxide, water vapor, and other by-products. If the combustion is incomplete, harmful gases such as carbon monoxide, nitrogen oxides, and sulfur oxides will also be produced. In addition, raw materials in the furnace may also release volatiles and particulate matter at high temperature, further increasing the composition of the waste gas. These waste gases need to be treated to reduce the impact on the environment;

[0003] According to the application number: 202322824666.6, there is disclosed a flue gas dust removal control device for industrial furnaces, including a smoke inlet pipe. The upper end of the smoke inlet pipe is fixedly connected to a treatment box. The upper end of the treatment box is fixedly connected to a smoke outlet pipe. Both sides of the smoke outlet pipe are fixedly connected to circulation pipes. One end of the circulation pipe far away from the smoke outlet pipe is fixedly connected to the smoke inlet pipe. Both sides inside the smoke outlet pipe are rotatably connected to baffles. Gears are fixedly connected to the rear parts of the baffles. A stepping motor is fixedly connected to the rear part of one of the gears. The beneficial effect of this comparative case is that by setting the stepping motor to control the rotation of the baffle to block the smoke outlet pipe and the circulation pipes provided in the smoke outlet pipe and the smoke inlet pipe, after the baffle blocks the smoke outlet pipe, the flue gas can enter the smoke inlet pipe again through the circulation pipe and enter the treatment box, so that the flue gas can be filtered twice and the waste heat can be utilized, improving the utilization rate of the flue gas while further reducing the dust content;

[0004] This comparative case well solves the problem that since the flue gas dust removal device does not have a structure for controlling the flow direction of the flue gas, after the dust-removed flue gas heats the water in the water pipe through the waste heat recovery device, there will still be some heat in the flue gas and it will be directly discharged, resulting in the incomplete utilization of the waste heat in the flue gas and the low utilization rate of the flue gas not reaching the expected level. After the filter mesh frame is used for a certain period of time, a large amount of impurities will remain between the mesh seams. If not cleaned in time, it is easy to cause blockage. However, since the filter mesh frame is fixed inside the treatment box, it is not convenient to clean and it is difficult to clean the residual impurities in time.

[0005] In summary, therefore, the utility model provides a flue gas dust removal control device for industrial furnaces to solve the above problems. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A flue gas dust removal control device for industrial furnaces includes

[0008] Main body mechanism, the main body mechanism includes a box body, the bottom of the box body is fixedly communicated with an air inlet pipe, the left side of the top of the box body is fixedly communicated with an exhaust pipe, a filtering unit is arranged in the inner cavity of the box body, and water inlet pipes are fixedly communicated with both sides of the inner cavity of the box body;

[0009] Return flow mechanism, the return flow mechanism includes a return pipe, the return pipe is located on the right side of the top of the box body and is fixedly communicated with the top of the box body, the bottom of the air inlet pipe is fixedly communicated with a three-way pipe, the bottom of the three-way pipe is fixedly communicated with an input pipe, and the bottom of the return pipe is fixedly communicated with the right side of the three-way pipe.

[0010] Further, in the present utility model, the filtering unit includes a mounting groove, the mounting groove is opened on the left side of the box body, the inner cavity of the mounting groove is detachably connected with a mounting plate, the right side of the mounting plate is fixedly connected with a fixing frame, and the number of the fixing frames is three.

[0011] Further, in the present utility model, a filter screen is fixedly connected to the inner cavity of the fixing frame, the mesh gaps in the inner cavities of the three filter screens gradually decrease from bottom to top, the left side of the box body is movably connected with a limiting plate through a movable pin, and the limiting plate is movably connected with the left side of the mounting plate.

[0012] Further, in the present utility model, a through groove is opened at the upper end of the left side of the box body, a shielding plate is slidably connected to the inner cavity of the through groove, and through holes are opened on both sides of the top of the shielding plate.

[0013] Further, in the present utility model, an electric push rod is arranged on the front surface of the box body, the output end of the electric push rod is fixedly connected with a connecting plate, the left side of the shielding plate is fixedly connected with the right side of the connecting plate, and fixing frames are fixedly connected to both sides of the surface of the electric push rod, and the back surfaces of the fixing frames are fixedly connected with the front surface of the box body.

[0014] Further, in the present utility model, a temperature sensor is arranged at the center of the top of the box body, a controller is fixedly connected to the back surface of the box body, the output end of the temperature sensor is connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the electric push rod.

[0015] Beneficial effects, the present utility model has the following beneficial effects:

[0016] The utility model adds flue gas to the inside of the box body and discharges the flue gas through the respectively arranged air inlet pipe and exhaust pipe. The filtering unit is used for filtering impurities in the flue gas. At the same time, since the filtering unit is convenient for installation and disassembly, it is also convenient to disassemble and clean the filtering unit to prevent excessive filtered impurities from blocking the mesh gaps, thereby ensuring the normal progress of the filtering work. By arranging a water delivery pipe for delivering water flow, when the water flow passes through the inside of the box body, it can be heated by the flue gas, thereby improving the utilization rate of heat. By arranging a return pipe, a three-way pipe and an input pipe, the uncooled flue gas that can be reused can be refluxed into the inside of the air inlet pipe and added into the inside of the box body again through the air inlet pipe, so that it can be reused twice, further reducing heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view structural schematic diagram of the utility model;

[0018] Figure 2 is the partial sectional view structural schematic diagram of the box body of the utility model;

[0019] Figure 3 is the connection structural schematic diagram of the baffle, through hole and electric push rod of the utility model;

[0020] Figure 4 is the connection structural schematic diagram of the mounting plate, fixed frame and filter net of the utility model.

[0021] In the figure:

[0022] 1. Main body mechanism; 101. Box body; 102. Air inlet pipe; 103. Exhaust pipe; 104. Filtering unit; 104a. Installation groove; 104b. Mounting plate; 104c. Fixed frame; 104d. Filter net; 104e. Limiting plate; 105. Water delivery pipe; 2. Return mechanism; 201. Return pipe; 202. Three-way pipe; 203. Input pipe; 204. Through groove; 205. Baffle; 206. Through hole; 207. Electric push rod; 208. Connecting plate; 209. Fixed frame; 210. Temperature sensor; 211. Controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows. In this disclosure, aspects of the present utility model are described with reference to the drawings, and many illustrative embodiments are shown in the drawings. The embodiments of this disclosure do not necessarily define all aspects of the present utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present utility model are not limited to any implementation manner. Additionally, some aspects disclosed in the present utility model can be used alone, or in any suitable combination with other aspects disclosed in the present utility model.

[0024] Embodiment 1

[0025] As Figures 1-4 shown, this is the first embodiment of the present utility model, which provides an industrial kiln flue gas dust removal control device, including,

[0026] The main body mechanism 1, the main body mechanism 1 includes a box body 101, the bottom of the box body 101 is fixedly communicated with an air inlet pipe 102, the left side of the top of the box body 101 is fixedly communicated with an exhaust pipe 103, a filtering unit 104 is arranged in the inner cavity of the box body 101, and water inlet pipes 105 are fixedly communicated with both sides of the inner cavity of the box body 101;

[0027] The reflux mechanism 2, the reflux mechanism 2 includes a reflux pipe 201, the reflux pipe 201 is located on the right side of the top of the box body 101 and is fixedly communicated with the top of the box body 101, the bottom of the air inlet pipe 102 is fixedly communicated with a three-way pipe 202, the bottom of the three-way pipe 202 is fixedly communicated with an input pipe 203, and the bottom of the reflux pipe 201 is fixedly communicated with the right side of the three-way pipe 202.

[0028] As Figures 1-4 shown, the air inlet pipe 102 and the exhaust pipe 103 are respectively used to add flue gas into the interior of the box body 101 and discharge the flue gas, the filtering unit 104 is used to filter impurities in the flue gas. At the same time, since the filtering unit 104 is convenient for installation and disassembly, it is also convenient to disassemble and clean the filtering unit 104 to prevent the filtered impurities from blocking the mesh gaps too much, so as to ensure that the filtering work can proceed normally. The water inlet pipe 105 is used to convey water flow. When the water flow passes through the interior of the box body 101, it can be heated by the flue gas, thereby improving the utilization rate of heat. The reflux pipe 201, the three-way pipe 202 and the input pipe 203 cooperate to enable the uncooled and reusable flue gas to flow back into the interior of the air inlet pipe 102 and be added into the interior of the box body 101 again through the air inlet pipe 102, so that it can be reused, further reducing heat waste.

[0029] Embodiment 2

[0030] Refer to Figure 2and 4 , which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0031] In this embodiment, the filtering unit 104 includes an installation groove 104a, the installation groove 104a is opened on the left side of the box body 101, the inner cavity of the installation groove 104a is detachably connected with an installation plate 104b, the right side of the installation plate 104b is fixedly connected with a fixing frame 104c, and the number of the fixing frames 104c is three.

[0032] A filter screen 104d is fixedly connected to the inner cavity of the fixing frame 104c. The mesh gaps in the inner cavities of the three filter screens 104d gradually decrease from bottom to top. The left side of the box body 101 is movably connected with a limiting plate 104e through a movable pin, and the limiting plate 104e is movably connected with the left side of the installation plate 104b.

[0033] As Figure 2 and 4 shown, the air inlet pipe 102 and the exhaust pipe 103 are respectively used for adding flue gas into the interior of the box body 101 and discharging the flue gas. The filtering unit 104 is used for filtering impurities in the flue gas. Since the mesh gaps in the inner cavities of the three filter screens 104d gradually decrease from bottom to top, the three filter screens 104d can filter impurities with different diameters multiple times. When too many impurities adhere to the mesh gaps of the filter screen 104d, the filtering unit 104 can be removed from the interior of the box body 101 and cleaned by moving the limiting plate 104e. After cleaning, it can be reinstalled.

[0034] Embodiment 3

[0035] Referring to Figure 1 and 3 , which is the third embodiment of the present utility model, and this embodiment is based on the previous two embodiments.

[0036] In this embodiment, a through groove 204 is opened at the upper end of the left side of the box body 101. A shielding plate 205 is slidably connected to the inner cavity of the through groove 204. Through holes 206 are opened on both sides of the top of the shielding plate 205.

[0037] An electric push rod 207 is arranged on the front surface of the box body 101. The output end of the electric push rod 207 is fixedly connected with a connecting plate 208. The left side of the shielding plate 205 is fixedly connected with the right side of the connecting plate 208. Fixing frames 209 are fixedly connected to both sides of the surface of the electric push rod 207, and the back surfaces of the fixing frames 209 are fixedly connected with the front surface of the box body 101.

[0038] A temperature sensor 210 is provided at the center of the top of the box body 101. The back surface of the box body 101 is fixedly connected with a PLC controller 211. The output end of the temperature sensor 210 is connected to the input end of the PLC controller 211, and the output end of the PLC controller 211 is electrically connected to the input end of the electric push rod 207.

[0039] As Figure 1 and 3 shown, under normal conditions, the left through hole 206 is located directly below the exhaust pipe 103 and does not affect the flue gas flow inside the exhaust pipe 103. The right through hole 206 is located on the left side directly below the return pipe 201. At this time, the baffle 205 blocks the bottom of the return pipe 201 to prevent the flue gas from flowing through. When the temperature sensor 210 detects that the preset value of the flue gas temperature at the upper end of the inner cavity of the box body 101 is higher than the preset value of the PLC controller 211, the PLC controller 211 will start the electric push rod 207, causing its output end to contract, and cooperate with the connecting plate 208 to drive the baffle 205 to move to the right in the inner cavity of the box body 101 until the right through hole 206 is located directly below the return pipe 201 and the left through hole 206 is located on the right side directly below the exhaust pipe 103. At this time, the left through hole 206 blocks the bottom of the exhaust pipe 103 to prevent the flue gas from flowing through. The flue gas flows into the interior of the return pipe 201 through the right through hole 206 and re-enters the interior of the box body 101 through the three-way pipe 202 and the intake pipe 102, thereby realizing the secondary utilization of the flue gas. When the temperature sensor 210 detects that the temperature at the upper end inside the box body 101 is lower than the preset value of the PLC controller 211, the PLC controller 211 will start the electric push rod 207 to reset its output end. At this time, the cooled flue gas can be discharged through the exhaust pipe 103.

[0040] During use, the intake pipe 102 and the exhaust pipe 103 are respectively used to add flue gas to the interior of the box body 101 and discharge the flue gas. The filtering unit 104 is used to filter impurities in the flue gas. Since the mesh gaps in the inner cavities of the three filter meshes 104d gradually decrease from bottom to top, the three filter meshes 104d can filter impurities with different diameters multiple times. When too many impurities adhere to the mesh gaps of the filter mesh 104d, the filtering unit 104 can be removed from the interior of the box body 101 and cleaned by removing the limit plate 104e. After cleaning, it can be reinstalled. Under normal conditions, the left through hole 206 is located directly below the exhaust pipe 103 and does not affect the flue gas flow inside the exhaust pipe 103. The right through hole 206 is located on the left directly below the return pipe 201. At this time, the baffle plate 205 blocks the bottom of the return pipe 201 to prevent flue gas from flowing through. When the temperature sensor 210 detects that the preset value of the flue gas temperature at the upper end of the inner cavity of the box body 101 is higher than the preset value of the PLC controller 211, the PLC controller 211 will activate the electric push rod 207, causing its output end to contract, and cooperate with the connecting plate 208 to drive the baffle plate 205 to move to the right in the inner cavity of the box body 101 until the right through hole 206 is located directly below the return pipe 201 and the left through hole 206 is located on the right directly below the exhaust pipe 103. At this time, the left through hole 206 blocks the bottom of the exhaust pipe 103 to prevent flue gas from flowing through. The flue gas flows into the interior of the return pipe 201 through the right through hole 206 and re-enters the interior of the box body 101 through the three-way pipe 202 and the intake pipe 102, thereby realizing the secondary utilization of the flue gas. When the temperature sensor 210 detects that the temperature at the upper end inside the box body 101 is lower than the preset value of the PLC controller 211, the PLC controller 211 will activate the electric push rod 207 to reset its output end. At this time, the cooled flue gas can be discharged through the exhaust pipe 103.

[0041] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the descriptions in the specification and drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in the art. And this application document is mainly used to protect the mechanical device, so the control method and circuit connection will not be explained in detail in this application document.

[0042] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model belongs can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. An industrial furnace flue gas dust removal control device, characterized in that: including, a main body mechanism (1), the main body mechanism (1) includes a box body (101), a bottom of the box body (101) is fixedly communicated with an air inlet pipe (102), a left side of a top of the box body (101) is fixedly communicated with an exhaust pipe (103), a filtering unit (104) is arranged in an inner cavity of the box body (101), and water supply pipes (105) are fixedly communicated with both sides of the inner cavity of the box body (101); a reflux mechanism (2), the reflux mechanism (2) includes a reflux pipe (201), the reflux pipe (201) is located on a right side of the top of the box body (101) and is fixedly communicated with the top of the box body (101), a bottom of the air inlet pipe (102) is fixedly communicated with a three-way pipe (202), a bottom of the three-way pipe (202) is fixedly communicated with an input pipe (203), and a bottom of the reflux pipe (201) is fixedly communicated with a right side of the three-way pipe (202).

2. The industrial furnace flue gas dust removal control device according to claim 1, characterized in that: The filtering unit (104) includes a mounting groove (104a), the mounting groove (104a) is opened on a left side of the box body (101), a mounting plate (104b) is detachably connected to an inner cavity of the mounting groove (104a), a fixing frame (104c) is fixedly connected to a right side of the mounting plate (104b), and the number of the fixing frames (104c) is three.

3. The industrial furnace flue gas dust removal control device according to claim 2, wherein: A filter screen (104d) is fixedly connected to an inner cavity of the fixing frame (104c), mesh gaps in inner cavities of the three filter screens (104d) gradually decrease from bottom to top, a limiting plate (104e) is movably connected to a left side of the box body (101) through a movable pin, and the limiting plate (104e) is movably connected to a left side of the mounting plate (104b).

4. The industrial furnace flue gas dust removal control device according to claim 1, characterized in that: A through groove (204) is opened at an upper end of a left side of the box body (101), a shielding plate (205) is slidably connected to an inner cavity of the through groove (204), and through holes (206) are opened on both sides of a top of the shielding plate (205).

5. The industrial furnace flue gas dust removal control device according to claim 4, characterized in that: An electric push rod (207) is arranged on a front surface of the box body (101), an output end of the electric push rod (207) is fixedly connected to a connecting plate (208), a left side of the shielding plate (205) is fixedly connected to a right side of the connecting plate (208), fixing frames (209) are fixedly connected to both sides of a surface of the electric push rod (207), and a back surface of the fixing frame (209) is fixedly connected to a front surface of the box body (101).

6. The industrial furnace flue gas dust removal control device according to claim 5, wherein: A temperature sensor (210) is arranged at a center of a top of the box body (101), a PLC controller (211) is fixedly connected to a back surface of the box body (101), an output end of the temperature sensor (210) is connected to an input end of the PLC controller (211), and an output end of the PLC controller (211) is electrically connected to an input end of the electric push rod (207).

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