A box-type tempering furnace with flue gas treatment device

Abstract

The utility model relates to the technical field of annealing furnace, concretely relates to a box type annealing furnace with flue gas treatment device, through the setting of filter assembly, the smoke dust filter screen can intercept the big particle smoke dust in the flue gas, the metal fibre felt filter screen can capture the fine oil mist and dust that the smoke dust filter screen did not intercept, utilize the adsorption of metal fibre preliminary adsorption part oil fume, further purify flue gas, the activated carbon adsorption board can high -efficient adsorption volatile organic compounds and peculiar smell in the flue gas, make flue gas reach environmental protection emission requirement, first pressure sensor and second pressure sensor can real -time monitoring pressure difference before and after filter assembly, when the filter screen or adsorption board is blocked by the accumulation of pollutant, the pressure difference will exceed the preset threshold, the sensor will signal transmission to control switch, provide accurate basis for maintenance, improve the practicality of the box type annealing furnace with flue gas treatment device.

Description

Technical Field

[0001] This utility model relates to the field of tempering furnace technology, and in particular to a box-type tempering furnace with a flue gas treatment device. Background Technology

[0002] Box-type tempering furnaces are core heat treatment equipment in fields such as machinery manufacturing, automotive parts, and hardware processing. By heating quenched metal workpieces at low temperatures, they can effectively eliminate internal stress and adjust mechanical properties, which is a key link in ensuring the processing accuracy and service life of metal components.

[0003] Existing patent application publication number CN221166613U discloses a box-type tempering furnace, including an outer shell, with inner cavities extending through the two side walls of the outer shell. Placement boxes are slidably connected to both sides of the inner cavity. Fixing plates are fixedly connected to both the front and rear walls of the inner cavity. Rotating shafts are rotatably connected to the upper and lower walls of multiple fixing plates. Rotating blocks are fixedly connected to the middle of multiple rotating shafts. Torsion springs are fixedly connected to the upper and lower walls of multiple rotating blocks. The ends of multiple torsion springs away from the rotating blocks are fixedly connected to the fixing plates. Rotating plates are fixedly connected to the side of the rotating blocks closest to each other on both sides. In this invention, through the combined action of the placement boxes, inner cavity, rotating plates, rotating blocks, torsion springs, rotating shafts, and outer shell, when the placement boxes on both sides are completely pulled out of the inner cavity, the rotating plates can close at both ends of the inner cavity, effectively sealing the inner cavity and thus reducing heat loss in the tempering furnace.

[0004] However, the box-type tempering furnace is not equipped with a flue gas treatment structure, and the oil fumes are directly emitted during use. This not only leads to the deterioration of the air quality in the workshop and causes health problems such as respiratory discomfort and skin irritation for operators, but also causes air pollution in the surrounding area. Utility Model Content

[0005] The purpose of this utility model is to provide a box-type tempering furnace with a flue gas treatment device, which solves the problem that without a flue gas treatment structure, oil fumes are directly emitted during use, which not only leads to the deterioration of workshop air quality and causes health problems such as respiratory discomfort and skin irritation for operators, but also causes air pollution in the surrounding area.

[0006] To achieve the above objectives, this utility model provides a box-type tempering furnace with a flue gas treatment device, including a tempering furnace body, an exhaust pipe at the upper end of the tempering furnace body, a flue gas conveying pipe at the upper end of the exhaust pipe, a flue gas treatment box at the end of the flue gas conveying pipe, a filter assembly inside the flue gas treatment box, and monitoring components on both sides of the filter assembly.

[0007] The filter assembly includes a filter chamber, which is fixedly installed inside the flue gas treatment box. A maintenance cover is detachably fixed to the front end of the filter chamber by bolts. The maintenance cover is detachably connected to the front end of the filter chamber by bolts. After disassembly, the internal filter layer can be quickly removed for easy cleaning or replacement without disassembling the entire flue gas treatment box, thus reducing maintenance difficulty.

[0008] The filter chamber contains a dust filter screen that slides inside, a metal fiber felt filter screen that slides above the dust filter screen, and an activated carbon adsorption plate that slides above the metal fiber felt filter screen. The dust filter screen can intercept large dust particles in the flue gas, the metal fiber felt filter screen can capture fine oil mist and dust that the dust filter screen cannot intercept, and the adsorption properties of the metal fibers can initially adsorb some of the oil fumes, further purifying the flue gas. The activated carbon adsorption plate can efficiently adsorb volatile organic compounds and odors in the flue gas, enabling the flue gas to meet environmental emission requirements.

[0009] The monitoring component includes a first pressure sensor located below the dust filter and a second pressure sensor located above the activated carbon adsorption plate. The first and second pressure sensors can monitor the pressure difference before and after the filter component in real time. When the filter or adsorption plate is clogged due to the accumulation of pollutants, the pressure difference will exceed a preset threshold, and the sensor will transmit the signal to the control switch, providing accurate information for maintenance.

[0010] The flue gas treatment box is equipped with a control switch at its outer end. An audible and visual alarm is electrically connected to one side of the control switch. The control switch is electrically connected to a first pressure sensor and a second pressure sensor. When the pressure difference exceeds the standard, the audible and visual alarm will provide a dual warning to the operator to promptly notify them that the filter layer needs to be cleaned or replaced, so as to avoid purification failure or fan overload due to blockage.

[0011] The flue gas treatment box is equipped with a frequency-modulated fan located above the filter assembly. The upper end of the flue gas treatment box is equipped with an exhaust pipe. The frequency-modulated fan can draw out the flue gas for filtration, and the filtered flue gas can be discharged through the exhaust pipe.

[0012] This utility model discloses a box-type tempering furnace with a flue gas treatment device. Through the arrangement of the filter components, the dust filter can intercept large particles of dust in the flue gas, the metal fiber felt filter can capture fine oil mist and dust that are not intercepted by the dust filter, and at the same time, the adsorption property of the metal fiber can initially adsorb some oil fumes, further purifying the flue gas. The activated carbon adsorption plate can efficiently adsorb volatile organic compounds and odors in the flue gas, so that the flue gas meets environmental emission requirements. The first pressure sensor and the second pressure sensor can monitor the pressure difference before and after the filter components in real time. When the filter or adsorption plate is blocked by pollutants, the pressure difference will exceed the preset threshold, and the sensor will transmit the signal to the control switch, providing accurate information for maintenance and improving the practicality of the box-type tempering furnace with a flue gas treatment device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of a box-type tempering furnace with a flue gas treatment device according to an embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the flue gas treatment box structure of a box-type tempering furnace with a flue gas treatment device according to an embodiment of this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the flue gas treatment box of a box-type tempering furnace with a flue gas treatment device according to an embodiment of the present utility model.

[0017] Figure 4 This is an enlarged structural diagram of section A of the box-type tempering furnace with flue gas treatment device according to an embodiment of this utility model.

[0018] 1. Tempering furnace body; 2. Exhaust pipe; 3. Smoke conveying pipe; 4. Flue gas treatment box; 5. Filter assembly; 51. Filter chamber; 52. Inspection cover plate; 53. Smoke and dust filter screen; 54. Metal fiber felt filter screen; 55. Activated carbon adsorption plate; 6. Monitoring assembly; 61. First pressure sensor; 62. Second pressure sensor; 63. Control switch; 64. Audible and visual alarm; 7. Frequency modulation fan; 8. Discharge pipe. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] Please see Figures 1-4 This utility model provides a technical solution: A box-type tempering furnace with a flue gas treatment device includes a tempering furnace body 1, an exhaust pipe 2 at the upper end of the tempering furnace body 1, a flue gas conveying pipe 3 at the upper end of the exhaust pipe 2, a flue gas treatment box 4 at the end of the flue gas conveying pipe 3, a filter assembly 5 inside the flue gas treatment box 4, and monitoring components 6 on both sides of the filter assembly 5.

[0021] In this embodiment, the preferred filter assembly 5 includes a filter chamber 51. The filter chamber 51 is fixedly installed inside the flue gas treatment box 4. The front end of the filter chamber 51 is detachably fixed with a maintenance cover plate 52 by bolts. The maintenance cover plate 52 is detachably connected to the front end of the filter chamber 51 by bolts. After disassembly, the internal filter layer can be quickly removed, which is convenient for cleaning or replacement without disassembling the entire flue gas treatment box 4, thus reducing the maintenance difficulty.

[0022] In this embodiment, a smoke and dust filter 53 is preferably slidably engaged inside the filter chamber 51, a metal fiber felt filter 54 is slidably engaged above the smoke and dust filter 53, and an activated carbon adsorption plate 55 is slidably engaged above the metal fiber felt filter 54. The smoke and dust filter 53 can intercept large particles of smoke and dust in the flue gas, the metal fiber felt filter 54 can capture fine oil mist and dust that the smoke and dust filter 53 does not intercept, and at the same time, the adsorption properties of the metal fibers are used to initially adsorb some of the oil fumes, further purifying the flue gas. The activated carbon adsorption plate 55 can efficiently adsorb volatile organic compounds and odors in the flue gas, so that the flue gas meets environmental emission requirements.

[0023] In this embodiment, the preferred monitoring component 6 includes a first pressure sensor 61. The first pressure sensor 61 is disposed below the dust filter screen 53, and a second pressure sensor 62 is disposed above the activated carbon adsorption plate 55. The first pressure sensor 61 and the second pressure sensor 62 can monitor the pressure difference before and after the filter component 5 in real time. When the filter screen or adsorption plate is blocked due to the accumulation of pollutants, the pressure difference will exceed a preset threshold, and the sensor will transmit the signal to the control switch 63, providing accurate basis for maintenance.

[0024] In this embodiment, a control switch 63 is preferably provided at the outer end of the flue gas treatment box 4. An audible and visual alarm 64 is electrically connected to one side of the control switch 63. The control switch 63 is electrically connected to the first pressure sensor 61 and the second pressure sensor 62. When the pressure difference exceeds the standard, the audible and visual alarm 64 will promptly inform the operator that the filter layer needs to be cleaned or replaced through dual audible and visual reminders to avoid purification failure or fan overload due to blockage.

[0025] In this embodiment, preferably, a frequency-modulated fan 7 is provided inside the flue gas treatment box 4 above the filter assembly 5, and an exhaust pipe 8 is provided at the upper end of the flue gas treatment box 4. The frequency-modulated fan 7 can draw out the flue gas for filtration, and the filtered flue gas can be discharged through the exhaust pipe 8.

[0026] Working principle: When using the tempering furnace body 1, the frequency-controlled fan 7 inside the flue gas treatment box 4 is started. The fan generates negative pressure, drawing the flue gas generated by the tempering furnace body 1 into the flue gas treatment box 4 through the flue gas conveying pipe 3. After entering the flue gas treatment box 4, the flue gas first flows through the dust filter screen 53 of the filter assembly 5. The filter screen intercepts large particulate impurities in the flue gas through physical interception, preventing these impurities from entering the subsequent fine filter screen and causing blockage. The preliminarily purified flue gas flows upward to the metal fiber felt filter screen 54. The porous structure of the metal fibers in the metal fiber felt filter screen 54 can capture the fine oil mist and dust that the dust filter screen 53 has not intercepted. At the same time, the adsorption characteristics of the metal fibers can preliminarily adsorb some oil fumes, further reducing the turbidity of the flue gas and providing protection for the subsequent activated carbon adsorption, preventing fine particles from covering the pores of the activated carbon and affecting the adsorption effect. The porous structure of the activated carbon in the activated carbon adsorption plate 55 adsorbs VOCs and odor molecules in the flue gas, effectively removing harmful organic matter and odors from the flue gas, ultimately purifying the flue gas. After filtration, the flue gas is discharged outdoors through the exhaust pipe 8 under the action of the frequency-controlled fan 7. During the filtration process, the first pressure sensor 61 and the second pressure sensor 62 of the monitoring component 6 continuously monitor the pressure difference before and after the filter component 5. When the dust filter screen 53 or the metal fiber felt filter screen 54 is blocked by impurities, the pressure value detected by the first pressure sensor 61 increases, causing the pressure difference before and after the filter component 5 to exceed the threshold. If the activated carbon adsorption plate 55 is saturated, the pressure difference will also increase due to the increased airflow resistance. When the pressure difference exceeds the standard, the first pressure sensor 61 or the second pressure sensor 62 transmits the signal to the control switch 63. The control switch 63 triggers the audible and visual alarm 64: the alarm emits a flashing red light and a buzzer sound, doubly reminding the operator that the filter layer needs maintenance. The operator removes the inspection cover 52 at the front end of the filter chamber 51, pulls out the corresponding filter layer, cleans or replaces it, and reinstalls all components after maintenance, and the equipment returns to normal operation.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A box-type tempering furnace with a flue gas treatment device, comprising a tempering furnace body (1), characterized in that, The upper end of the tempering furnace body (1) is provided with a flue pipe (2), the upper end of the flue pipe (2) is provided with a smoke conveying pipe (3), the end of the smoke conveying pipe (3) is provided with a flue gas treatment box (4), the inside of the flue gas treatment box (4) is provided with a filter assembly (5), and monitoring components (6) are provided on both sides of the filter assembly (5).

2. A box-type tempering furnace with a flue gas treatment device as described in claim 1, characterized in that, The filter assembly (5) includes a filter chamber (51). The filter chamber (51) is fixedly installed inside the flue gas treatment box (4). The front end of the filter chamber (51) is detachably fixed with a maintenance cover plate (52) by bolts.

3. A box-type tempering furnace with a flue gas treatment device as described in claim 2, characterized in that, The filter chamber (51) is slidably connected to a dust filter (53), and a metal fiber felt filter (54) is slidably connected above the dust filter (53). An activated carbon adsorption plate (55) is slidably connected above the metal fiber felt filter (54).

4. A box-type tempering furnace with a flue gas treatment device as described in claim 3, characterized in that, The monitoring component (6) includes a first pressure sensor (61), which is located below the dust filter (53) and a second pressure sensor (62) is located above the activated carbon adsorption plate (55).

5. A box-type tempering furnace with a flue gas treatment device as described in claim 1, characterized in that, A control switch (63) is provided at the outer end of the flue gas treatment box (4). An audible and visual alarm (64) is electrically connected to one side of the control switch (63). The control switch (63) is electrically connected to the first pressure sensor (61) and the second pressure sensor (62).

6. A box-type tempering furnace with a flue gas treatment device as described in claim 1, characterized in that, The flue gas treatment box (4) is equipped with a frequency-adjustable fan (7) located above the filter assembly (5), and an exhaust pipe (8) is provided at the upper end of the flue gas treatment box (4).

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