Flue gas collecting and filtering device

Abstract

The utility model provides a flue gas collecting and filtering device, which relates to the field of environment-friendly monitoring equipment and comprises a base, a probe rod and a heat insulation box, and the base is a fixing structure of the probe rod and the heat insulation box; the heat preservation box is provided with a containing space, and a filtering structure is arranged in the containing space and communicated with the probe rod. A temperature-adjustable heating part is also arranged in the accommodating space, and a heating object of the heating part is a filtering structure; the system further comprises an electromagnetic valve, the electromagnetic valve is provided with a first pipe and a second pipe, the first pipe is connected with the filtering structure, and the second pipe is connected with an indoor analysis system cabinet. According to the utility model, the feeler lever and an electric appliance control part are effectively reduced into a whole, miniaturization is successfully carried out, in addition, the arrangement mode of the filter element is more reasonable, and the filter element is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection monitoring equipment, in particular to a flue gas collection and filtering device. Background Art

[0002] The online volatile organic compound (VOC) monitoring system consists of an online sampling and pretreatment system, a temperature, pressure, and flow monitoring system, an oxygen and humidity monitoring system, an online VOCs monitoring system, and a data acquisition and processing subsystem. This system transmits collected, processed, and analyzed flue gas data directly online to environmental protection authorities, enabling real-time monitoring of flue gas emissions and effective prevention and control. This system is widely used in industries such as the chemical industry, power generation, metallurgy, and cement kilns. This design represents the first component of the online monitoring system's sampling and pretreatment system, known as the sampling probe. The sampling probe is securely connected to the sampling point in the flue duct via a welded flange and a gasket. A sampling rod is connected to the front end of the sampling probe. A vacuum pump operates to draw flue gas through the sampling probe into the filter element, where impurities are filtered out. After entering the next stage of pretreatment, high-temperature wet oxygen monitoring, the gas enters the analysis system, all while maintaining high temperature heat. Currently, a common problem is the complex heating, securing, and sealing structure of the filter element. The sampling probe and electrical control unit are separated into two conjoined chassis, resulting in bulk and weight, making installation difficult. Utility Model Content

[0003] The purpose of this utility model is to provide a smoke collection and filtering device to solve the above technical problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A smoke collection and filtering device comprises a base, a probe rod and an insulation box, wherein the base is a fixing structure for the probe rod and the insulation box;

[0006] The thermal insulation box has a receiving space, a filtering structure is provided in the receiving space, and the filtering structure is connected to the probe rod;

[0007] There is also a temperature-adjustable heating unit in the accommodation space, and the heating object of the heating unit is the filter structure;

[0008] It also includes a solenoid valve, which is equipped with a first tube and a second tube, wherein the first tube is connected to the filter structure, and the second tube is connected to the indoor analysis system cabinet.

[0009] Preferably, the filtering structure includes a filter tube disposed in the heat preservation box, and a filter element filled in the filter tube;

[0010] Both ends of the filter tube are connected with welding flanges and filter tube covers respectively;

[0011] The welding flange is the fixed structure of the probe rod and is used to connect the probe rod to the filter tube;

[0012] The filter tube cover is a fixed structure of the first tube and is used to connect the first tube with the filter tube.

[0013] Preferably, the heating part is encircled by the filter tube.

[0014] Preferably, the heating portion includes a first cast aluminum and a second cast aluminum that match the shape of the filter tube, and the first cast aluminum and the second cast aluminum are combined to form a space for the filter tube.

[0015] Preferably, a thermostat is installed on either the first cast aluminum or the second cast aluminum, and the thermostat can uniformly control the temperature of the first cast aluminum and the second cast aluminum.

[0016] Preferably, a sealing gasket is provided at the connection between the welding flange and the filter tube, and a sealing ring is provided at the connection between the filter tube cover and the filter tube.

[0017] Preferably, the second tube has three ports, one of which is connected to the solenoid valve, another is connected to the analysis device, and another is connected to the backflush device.

[0018] Preferably, the base is further provided with a chassis, which is buckled onto the base.

[0019] The beneficial effects of the utility model are:

[0020] 1. In the present invention, the probe rod and the electrical control part are effectively reduced to a whole, which is successfully miniaturized. In addition, the filter element setting method is more reasonable and easy to replace.

[0021] 2. In the present invention, the heating and filtering parts are covered with an insulation box to separate the electrical components. The sampling and electronic control are in one chassis, which reduces the volume and mass and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a flue gas collection and filtering device;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure after removing the chassis;

[0024] Figure 3 for Figure 2 Cross-sectional view of part of the structure;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure after removing the insulation box;

[0026] Figure numerals: 1. base; 2. chassis; 3. welding flange; 4. probe rod; 5. insulation box; 6. filter tube cover; 7. first tube; 8. solenoid valve; 9. ceramic terminal block; 10. second tube; 11. first waterproof gland; 12. second waterproof gland; 13. first cast aluminum; 14. second cast aluminum; 15. thermostat; 16. filter tube; 17. filter element; 18. sealing ring; 19. sealing gasket. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0028] The specific embodiments of the present utility model are described below with reference to the accompanying drawings.

[0029] Example 1

[0030] In this embodiment, a smoke collection and filtering device is proposed. Figure 1-Figure 4 The smoke collection and filtering device includes a base 1, a probe rod 4 and an insulation box 5. The base 1 is a fixed structure for the probe rod 4 and the insulation box 5.

[0031] See also Figure 3 There is insulation cotton inside the insulation box 5, and there is a accommodating space inside the insulation box 5. The accommodating space is used to install the filtering structure and the heating part. It should be noted that the filtering structure is connected to the probe rod 4, the temperature of the heating part is adjustable, and the heating object of the heating part is the filtering structure.

[0032] See also Figure 2 and Figure 4 The smoke collection and filtering device also includes a solenoid valve 8, which is equipped with a first tube 7 and a second tube 10. The first tube 7 is connected to the filtering structure, and the second tube 10 is connected to the indoor analysis system cabinet.

[0033] In this embodiment, the filter structure includes a filter tube 16 disposed transversely within the heat preservation box 5, and a filter element 17 is filled inside the filter tube 16. The two ends of the filter tube 16 are respectively connected to a welding flange 3 and a filter tube cover 6.

[0034] It should be noted that the welding flange 3 is a fixed structure for the probe rod 4, and the filter tube cover 6 is a fixed structure for the first tube 7. In addition, the filter tube cover 6 is also a fixed structure for the filter element 17. In this way, it can be confirmed that the filter tube 16 is connected to the probe rod 4 and the first tube 7 respectively.

[0035] To further illustrate, a sealing gasket 19 is provided at the connection between the welding flange 3 and the filter tube 16 , and a sealing ring 18 is provided at the connection between the filter tube cover 6 and the filter tube 16 .

[0036] In this embodiment, the heating unit is enclosed within the filter tube 16. The heating unit comprises a first cast aluminum 13 and a second cast aluminum 14 that conform to the shape of the filter tube 16. The first cast aluminum 13 and the second cast aluminum 14 are combined to form a space for enclosing the filter tube 16. It should be noted that the first cast aluminum 13 and the second cast aluminum 14 are electrically connected to heat the filter structure.

[0037] To further illustrate, a thermostat 15 is installed on either the first cast aluminum 13 or the second cast aluminum 14 . In this embodiment, the thermostat 15 is installed on the first cast aluminum 13 , and the thermostat 15 can uniformly control the temperatures of the first cast aluminum 13 and the second cast aluminum 14 .

[0038] It should be additionally explained that the second tube 10 has three ports, one of which is connected to the solenoid valve 8 , another is connected to the analysis device, and another is connected to the backflush device.

[0039] See also Figure 2 and Figure 4 The chassis 2 is buckled on the base 1. The base 1 is equipped with a first waterproof gland 11 and a second waterproof gland 12. The base 1 is also equipped with a ceramic terminal block 9, which is used to connect electricity to the power unit.

[0040] In this embodiment, the function of the heat preservation box 5 is to separate the first cast aluminum 13 and the second cast aluminum 14 to prevent high temperature from damaging the solenoid valve 8 and related wiring harnesses.

[0041] In the embodiment, the heating part composed of two pieces of cast aluminum has the function of heating the inner cavity of the filter tube 16 and heating the heating pipeline and pipeline throughout the process, thereby preventing the condensed water and acidic gases such as SO2 and SO3 in the flue gas from corroding the probe due to chemical reactions, and preventing volatile organic compounds from being easily adsorbed and causing inaccurate measurements.

[0042] The smoke collection and filtering device proposed in this embodiment works as follows:

[0043] First, the indoor analysis system cabinet issues a command, and the solenoid valve 8 controls the indoor air pump (the air pump is not the structure of the flue gas collection and filtering device, not shown in the figure) to start working, extracting flue gas, and filtering it through the filter element 17 to enter the next stage of pretreatment.

[0044] Second, after working for a period of time, dust accumulates on the surface of the filter element 17. To prevent the sampling air path from being blocked, the solenoid valve 8 is switched and the system performs backflush. The backflush air returns along the original path and blows from the inside of the filter element 17 to the outside.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke collection and filtering device, characterized in that: It includes a base, a probe rod and an insulation box, wherein the base is a fixed structure for the probe rod and the insulation box; The thermal insulation box has a receiving space, a filtering structure is provided in the receiving space, and the filtering structure is connected to the probe rod; There is also a temperature-adjustable heating unit in the accommodation space, and the heating object of the heating unit is the filter structure; It also includes a solenoid valve, which is equipped with a first tube and a second tube, wherein the first tube is connected to the filter structure, and the second tube is connected to the indoor analysis system cabinet.

2. A smoke collection and filtering device according to claim 1, characterized in that: The filtering structure includes a filter tube arranged in the heat preservation box and a filter element filled in the filter tube; Both ends of the filter tube are connected with welding flanges and filter tube covers respectively; The welding flange is the fixed structure of the probe rod and is used to connect the probe rod to the filter tube; The filter tube cover is a fixed structure of the first tube and is used to connect the first tube with the filter tube.

3. A smoke collection and filtering device according to claim 2, characterized in that: The heating portion is trapped on the filter tube.

4. A smoke collection and filtering device according to claim 3, characterized in that: The heating part comprises a first cast aluminum and a second cast aluminum that match the shape of the filter tube. The first cast aluminum and the second cast aluminum are combined to form a space for the filter tube.

5. The smoke collecting and filtering device according to claim 4, characterized in that: Either the first cast aluminum or the second cast aluminum is installed with a thermostat, and the thermostat can uniformly control the temperature of the first cast aluminum and the second cast aluminum.

6. The smoke collecting and filtering device according to claim 2, characterized in that: There is a sealing gasket at the connection between the welding flange and the filter tube, and there is a sealing ring at the connection between the filter tube cover and the filter tube.

7. The smoke collecting and filtering device according to claim 1, characterized in that: The second tube has three ports, one of which is connected to the solenoid valve, another is connected to the analysis device, and another is connected to the backflush device.

8. The smoke collecting and filtering device according to claim 1, characterized in that: The base is also provided with a chassis, which is buckled onto the base.

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