Flue gas preprocessor

Abstract

The utility model discloses a flue gas preprocessor, which belongs to the field of preprocessors and comprises a case, an air inlet is fixedly connected in the case, an air outlet is fixedly connected in the case and positioned on the side surface of the air inlet, and an emptying port is arranged on the case and positioned on the side surface of the air outlet. A flow adjusting knob is movably installed on the side face, located at the emptying opening, of the machine box, air tightness detection mechanisms are movably installed on the outer sides, located at the air inlet and the air outlet, of the machine box, through the arranged air tightness detection mechanisms, after the fixing bolts are unscrewed, the fixing bolts are moved out of the positioning blocks, the fixing state of the annular plate is relieved, and the air tightness of the machine box is detected. The annular plate is pushed by the first spring to move upwards, then one end of the floating wire extends into the gas collecting hood, and when the gas inlet and the gas outlet are connected loosely and leakage occurs, leaked gas flows upwards under the limitation of the gas collecting hood and blows the floating wire, so that the floating wire floats, and whether gas leakage occurs or not is detected conveniently.

Description

Technical Field

[0001] The utility model relates to the field of preprocessors, and particularly to a flue gas preprocessor. Background Art

[0002] During the working process of combustion equipment such as boilers, heating furnaces, kilns (cement kilns, glass kilns, ceramic kilns, etc.), roasting furnaces, incinerators, coke ovens, etc., a large amount of flue gas, tail gas, waste gas, exhaust gas, etc. will be generated. Sampling the gas through a flue gas preprocessor facilitates subsequent gas purification treatment. The external gas is introduced into the flue gas preprocessor for sampling treatment. However, the positions of the air inlet and the air outlet are prone to loose connection, resulting in poor airtightness of the gas connection, making the gas easy to leak. However, the colors of some gases are the same as that of air, and the leaked gas is not easy to observe, and the gas leakage at the connection port is not easy to detect, resulting in inaccurate sampling results. Therefore, improvement is needed. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a flue gas preprocessor, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The flue gas preprocessor includes a chassis. An air inlet is fixedly connected inside the chassis. An air outlet is fixedly connected inside the chassis at a position on the side of the air inlet. An exhaust port is opened on the chassis at a position on the side of the air outlet. A flow regulating knob is movably installed on the chassis at a position on the side of the exhaust port. A airtightness detection mechanism is movably installed on the chassis at positions outside the air inlet and the air outlet. The airtightness detection mechanism includes a gas collecting hood, a first slide rod, an annular plate, a positioning block, a side rod, a connecting ring and a floating wire. The gas collecting hood is fixedly connected inside the chassis, and the air inlet and the air outlet are located inside the gas collecting hood. The first slide rod is fixedly connected to the side of the gas collecting hood. The annular plate is movably installed on the first slide rod. The positioning block is fixedly connected to the side of the gas collecting hood. The side rod is fixedly connected to the side of the annular plate. The connecting ring is fixedly connected to the upper end of the side rod. The floating wire is movably installed on the connecting ring.

[0006] Preferably, a box cover is movably installed on the chassis, and a power button is movably installed on the chassis at a position on the side of the flow regulating knob.

[0007] Preferably, the airtightness detection mechanism further includes a slide hole and a first spring. The slide hole is opened on the annular plate. The annular plate is on the first slide rod through the slide hole. The first spring is movably installed on the first slide rod and is located below the annular plate.

[0008] Preferably, the airtightness detection mechanism further comprises a sliding groove, a fixing bolt and a first screw hole. The sliding groove is formed in the annular plate, the first screw hole is formed in the annular plate, and the first screw hole communicates with the sliding groove. The fixing bolt is movably installed in the first screw hole, and the positioning block is movably installed in the sliding groove.

[0009] Preferably, the connecting ring is located above the annular plate and on the outer side of the annular plate.

[0010] Preferably, one end of the floating wire is fixedly connected to the connecting ring, and the other end of the floating wire extends into the air collecting hood.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, through the arranged airtightness detection mechanism, after the fixing bolt is loosened, the fixing bolt is removed from the positioning block, the fixing state of the annular plate is released, the annular plate moves upward under the push of the first spring, and then one end of the floating wire is extended into the air collecting hood. When the air inlet and the air outlet are loose and leakage occurs, the leaked gas flows upward under the restriction of the air collecting hood, blows the floating wire, and makes the floating wire float, so as to facilitate detecting whether gas leakage occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the utility model;

[0014] Figure 2 is the basic structural schematic diagram of the chassis of the utility model;

[0015] Figure 3 is the structural schematic diagram of the airtightness detection mechanism of the utility model;

[0016] Figure 4 is the structural schematic diagram of the annular plate and the connecting ring of the utility model.

[0017] In the figure: 1, chassis; 2, box cover; 3, air inlet; 4, air outlet; 5, exhaust port; 6, flow regulating knob; 7, power button; 8, airtightness detection mechanism; 801, air collecting hood; 802, first sliding rod; 803, first spring; 804, annular plate; 805, positioning block; 806, sliding groove; 807, fixing bolt; 808, first screw hole; 809, side rod; 810, sliding hole; 811, connecting ring; 812, floating wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1 - 3 As shown, the flue gas pre-processor includes a chassis 1, an air inlet 3 is fixedly connected inside the chassis 1, an air outlet 4 is fixedly connected to the side of the air inlet 3 inside the chassis 1, an exhaust port 5 is opened on the side of the air outlet 4, a flow regulating knob 6 is movably installed on the side of the exhaust port 5 on the chassis 1, and an air tightness detection mechanism 8 is movably installed on the outer side of the air inlet 3 and the air outlet 4 on the chassis 1, and the air tightness detection mechanism 8 includes an air collecting hood 801, a No. 1 slide bar 802, an annular plate 804, a fixed Position block 805, side rod 809, connecting ring 811 and floating wire 812, air collecting hood 801 is fixedly connected in the chassis 1, and air inlet 3 and air outlet 4 are located in the air collecting hood 801, No. 1 slide bar 802 is fixedly connected to the side position of the air collecting hood 801, annular plate 804 is movably installed on No. 1 slide bar 802, positioning block 805 is fixedly connected to the side position of the air collecting hood 801, a box cover 2 is movably installed on the chassis 1, a power button 7 is movably installed on the chassis 1 at the side position of the flow regulating knob 6, and an air tightness detection mechanism 8 It also includes a slide hole 810 and a No. 1 spring 803. The slide hole 810 is provided on the annular plate 804. The annular plate 804 is connected to the No. 1 slide bar 802 through the slide hole 810. The No. 1 spring 803 is movably mounted on the No. 1 slide bar 802 and is located below the annular plate 804. The airtightness detection mechanism 8 also includes a slide groove 806, a fixing bolt 807 and a No. 1 screw hole 808. The slide groove 806 is provided on the annular plate 804. The No. 1 screw hole 808 is provided on the annular plate 804, and the No. 1 screw hole 808 is connected to the slide groove 806. The fixing bolt 807 is movably installed in the No. 1 screw hole 808, and the positioning block 805 is movably installed in the slide groove 806. The fixing bolt 807 is loosened to the side so that the fixing bolt 807 moves out from the positioning block 805, so that the fixing state of the annular plate 804 and the air collecting hood 801 is released from each other, so that the compressed No. 1 spring 803 is restored to be expanded, so that the No. 1 spring 803 pushes the annular plate 804 to move upward, and the connecting ring 811 at the side position of the annular plate 804 moves upward synchronously, thereby moving to the upper position of the air collecting hood 801.

[0020] like Figures 1 - 4As shown, the side rod 809 is fixedly connected to the side surface of the annular plate 804. The connecting ring 811 is fixedly connected to the upper end of the side rod 809. The floating wire 812 is movably installed on the connecting ring 811. The connecting ring 811 is located above the annular plate 804 and on the outer side of the annular plate 804. One end of the floating wire 812 is fixedly connected to the connecting ring 811, and the other end of the floating wire 812 extends into the air collecting hood 801. The floating wire 812 is made of light materials such as wool and cotton. One end of the floating wire 812 extends into the air collecting hood 801. The air collecting hood 801 restricts the outer sides of the air inlet 3 and the air outlet 4, so that the leaked gas is restricted by the air collecting hood 801, making it convenient for the gas to move upward along the air collecting hood 801 and blow the floating wire 812, thereby facilitating the detection of gas leakage.

[0021] It should be noted that the present utility model is a flue gas preprocessor. The sampling probe of the analyzer (or a self-provided probe) is inserted into the sampling hole. The rubber tube on the probe is connected to the air inlet 3 of this sampler. Press the power button 7 and adjust the flow regulating knob 6. Observe the flow rate of the flowmeter and make it greater than the sampling flow rate of the analytical instrument by 0.1 - 0.2 L / min. Connect the flue gas analyzer and the outlet 4 of the pretreatment with a rubber tube, and its flow rate should be slightly higher than the sampling flow rate of the analyzer. Otherwise, adjust the flow regulating knob 6. Observe the dehydration filter. When the dehydrated resin inside the filter becomes discolored and ineffective due to contamination, the fiber filter element becomes dirty, or there is too much condensate and dust, replace the dehydrated resin and the filter element in time, drain the condensate water at the lower part. When loading and unloading the dehydration filter, pull out the filter outward simultaneously from the upper and lower parts. If the inside of the filter is dirty, it can be cleaned with hot soapy water and dried before use. It is strictly prohibited to clean and wipe it with organic solvents such as alcohol. After the work is completed, drain the condensate water at the lower part of the "dehydration filter" in time to prevent the condensate water from flowing back into components such as the flowmeter. After the on-site sampling is completed, the sampling preprocessor should be charged in time. The charging time is 6 - 8 hours. When storing for a long time, it should be charged once a month to ensure the activity of the battery. Connect the external gas to the air inlet 3 through external structures such as connecting pipes. The air inlet 3 and the outlet 4 are located in the gas collection hood 801. After loosening the fixing bolt 807, move the fixing bolt 807 out of the positioning block 805, so that the fixed state of the annular plate 804 and the positioning block 805 is released. The compressed first spring 803 resumes expansion and pushes the annular plate 804 to move upward, so that the annular plate 804 slides on the first slide rod 802 through the sliding hole 810. When the annular plate 804 moves to the upper position of the first slide rod 802, the connecting ring 811 on the side position of the annular plate 804 moves upward synchronously, so as to clamp the connecting ring 811 to move to the upper position of the gas collection hood 801. Manually extend one end of the floating wire 812 on the connecting ring 811 into the gas collection hood 801. When the connection structure of the air inlet 3 and the outlet 4 becomes loose and gas leaks, the gas is restricted by the gas collection hood 801. The gas floats upward along the gas collection hood 801 and blows the floating wire 812 at the upper position of the gas collection hood 801, so as to facilitate the staff to detect whether gas leakage occurs at the connection port, and thus facilitate more accurate sampling.

[0022] The above shows and describes the basic principles, main features and advantages of the present utility model. It is only a preferred embodiment of the present utility model, and its description is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. Without departing from the principles and purposes of the present utility model, various changes, modifications, substitutions and deformations can be made to the embodiments, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. Flue gas preprocessor, including a chassis (1), an air inlet (3) is fixedly connected inside the chassis (1), an air outlet (4) is fixedly connected inside the chassis (1) at a side position of the air inlet (3), an exhaust port (5) is provided on the chassis (1) at a side position of the air outlet (4), and a flow rate adjustment knob (6) is movably installed on the chassis (1) at a side position of the exhaust port (5), characterized in that: A airtightness detection mechanism (8) is movably installed on the outer sides of the air inlet (3) and the air outlet (4) of the chassis (1). The airtightness detection mechanism (8) includes an air collecting cover (801), a first slide bar (802), an annular plate (804), a positioning block (805), a side bar (809), a connecting ring (811) and a floating wire (812). The air collecting cover (801) is fixedly connected inside the chassis (1), and the air inlet (3) and the air outlet (4) are located inside the air collecting cover (801). The first slide bar (802) is fixedly connected to the side of the air collecting cover (801). The annular plate (804) is movably installed on the first slide bar (802). The positioning block (805) is fixedly connected to the side of the air collecting cover (801). The side bar (809) is fixedly connected to the side of the annular plate (804). The connecting ring (811) is fixedly connected to the upper end of the side bar (809). The floating wire (812) is movably installed on the connecting ring (811).

2. The flue gas preprocessor according to claim 1, wherein: A lid (2) is movably installed on the chassis (1). A power button (7) is movably installed on the side of the chassis (1) where the flow regulating knob (6) is located.

3. The flue gas preprocessor according to claim 2, characterized in that: The airtightness detection mechanism (8) further includes a sliding hole (810) and a first spring (803). The sliding hole (810) is opened on the annular plate (804). The annular plate (804) is on the first slide bar (802) through the sliding hole (810). The first spring (803) is movably installed on the first slide bar (802) and is located below the annular plate (804).

4. The flue gas preprocessor according to claim 3, wherein: The airtightness detection mechanism (8) further includes a sliding groove (806), a fixing bolt (807) and a first screw hole (808). The sliding groove (806) is opened on the annular plate (804). The first screw hole (808) is opened on the annular plate (804) and the first screw hole (808) communicates with the sliding groove (806). The fixing bolt (807) is movably installed in the first screw hole (808). The positioning block (805) is movably installed in the sliding groove (806).

5. The flue gas preprocessor according to claim 4, characterized in that: The connecting ring (811) is located above the annular plate (804) and is located outside the annular plate (804).

6. The flue gas preprocessor according to claim 5, wherein: One end of the floating wire (812) is fixedly connected to the connecting ring (811), and the other end of the floating wire (812) extends into the air collecting cover (801).

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