Flue gas sampling probe convenient to disassemble and assemble and having constant temperature function

Abstract

The invention relates to the technical field of flue gas detection, and particularly discloses a flue gas sampling probe convenient to disassemble and assemble and having a constant temperature function, the flue gas sampling probe comprises a shell, the shell comprises a bottom end shell and a top end shell, the bottom end shell is provided with a flue gas treatment hole and a supporting plate, the middle end of the top end shell is provided with a telescopic hole, and the bottom end shell is in threaded connection with the top end shell; one end of the telescopic rod is inserted into the telescopic hole, the other end of the telescopic rod is inserted into the flue gas treatment hole, and a tooth groove is formed in the telescopic rod; the driving mechanism drives the telescopic rod to move; the constant-temperature mechanism comprises a spiral groove pipe, a constant-temperature assembly, a heating box, a refrigerating box and a transfer conveying assembly; the switching mechanism comprises a switching assembly and a filtering assembly; the defects that in the prior art, flue gas sampling probe filtering equipment is unstable in connection, high in replacement frequency, prone to being affected by high temperature and unstable in disassembly and assembly are overcome.

Description

Technical Field

[0001] The present invention relates to the field of flue gas detection, and particularly to a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions. Background Art

[0002] The flue gas sampling probe is an important device for monitoring and analyzing pollutants in industrial flue gas emissions. With the acceleration of the industrialization process, the problem of environmental pollution has become increasingly serious. In particular, harmful substances in flue gas such as sulfur oxides and nitrogen oxides have caused great harm to human health and the ecological environment. Therefore, the development and application of flue gas sampling technology have become particularly important.

[0003] In the prior art, the flue gas sampling probe usually has problems such as unstable connection of the filtering device and high replacement frequency. Moreover, the flue gas sampling probe is easily affected by high temperature, which affects the service life and generates condensate water, affecting detection. At the same time, disassembly, assembly, and maintenance are unstable. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] The problem to be solved by the present invention is to provide a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions, so as to overcome the defects of unstable connection of the filtering device, high replacement frequency, easy influence by high temperature, and unstable disassembly and assembly of the flue gas sampling probe in the prior art.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the present invention provides a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions, including:

[0008] A housing, the housing includes a bottom housing and a top housing. The bottom housing has a flue gas treatment hole, a support plate is provided in the middle of the bottom housing, and a telescopic hole is provided in the middle of the top housing;

[0009] A telescopic rod, one end of the telescopic rod is inserted into the telescopic hole, the other end of the telescopic rod is inserted into the flue gas treatment hole, and a tooth groove is provided on the telescopic rod;

[0010] A driving mechanism, the driving mechanism includes a first motor, a first transmission shaft, and a driving gear. The first motor is connected to the support plate, the first transmission shaft is connected to the output shaft of the first motor, and the driving gear meshes with the tooth groove;

[0011] Thermostatic mechanism, the thermostatic mechanism includes a spiral groove tube, a thermostatic component, a heating box, a refrigeration box and a transfer and conveying component. The two ends of the thermostatic component are respectively connected to the heating box and the refrigeration box. The spiral groove tube is arranged in the bottom shell. The heating box and the refrigeration box are connected to the spiral groove tube through the transfer and conveying component;

[0012] Switching mechanism, the switching mechanism is arranged on one side of the telescopic rod. The switching mechanism includes a switching component and a filtering component.

[0013] As described above for the flue gas sampling probe, optionally, the heating end of the thermostatic component is arranged inside the heating box, and the refrigeration end of the thermostatic component is arranged inside the refrigeration box. The thermostatic component includes a plurality of P-type semiconductors and N-type semiconductors. The plurality of P-type semiconductors and N-type semiconductors are connected with metal conductors and ceramic sheets to form a refrigeration end and a heating end; the transfer and conveying component includes a water pump and a transfer box. The water pump is connected to the heating box, and the transfer box is connected to the support plate.

[0014] As described above for the flue gas sampling probe, optionally, the heating box and the refrigeration box are respectively connected to the water pump through a first pipeline. The water pump is connected to one end of the spiral groove tube through a second pipeline. The other end of the spiral groove tube is connected to the transfer box through a third pipeline. The transfer box is connected to the heating box and the refrigeration box respectively through a fourth pipeline.

[0015] As described above for the flue gas sampling probe, optionally, the switching component includes a second motor, a second transmission shaft and a connecting rod. The second motor is connected to the support plate. The second transmission shaft is connected to the output end of the second motor. The connecting rod is connected to the second transmission shaft. The second motor drives the connecting rod to rotate. The connecting rod is connected to the filtering component.

[0016] As described above for the flue gas sampling probe, optionally, both the filtering component and the connecting rod have four. The four connecting rods are evenly distributed around the second transmission shaft.

[0017] As described above for the flue gas sampling probe, optionally, the switching component includes four electric push rods. The four electric push rods are respectively connected to the four connecting rods. The electric push rods are in contact with the filtering component.

[0018] As described above for the flue gas sampling probe, optionally, the inside of the telescopic rod is hollow. A replacement opening is provided on one side of the telescopic rod close to the switching mechanism. The filtering component extends into the hollow interior of the telescopic rod from the replacement opening and is fixedly attached to the hollow interior of the telescopic rod.

[0019] As described above for the flue gas sampling probe, optionally, the filtering assembly includes a filter net, a filter housing, a sliding rod, a trigger rod, an elastic space, a first limiting plate, and a spring. The filter net is connected to the filter housing. The elastic space is provided inside the rear part of the filter housing. The first limiting plate and the spring are arranged in the elastic space. The first limiting plate is connected to the middle part of the sliding rod. A through hole adapted to the position of the replacement port is connected to the upper part of the elastic space. The upper part of the sliding rod passes through the through hole. A blind hole is connected to the lower part of the elastic space. The lower part of the sliding rod is arranged in the blind hole. One end of the spring is connected to the first limiting plate, and the other end of the spring is connected to the elastic space. A guiding groove is provided at the lower part of the sliding rod, and the bottom surface of the guiding groove is inclined. The trigger rod is arranged adjacent to the guiding groove, and the electric push rod abuts against the trigger rod.

[0020] As described above for the flue gas sampling probe, optionally, threaded holes are provided on both the bottom end housing and the top end housing, and bolts pass through the threaded holes to fix the bottom end housing and the top end housing.

[0021] As described above for the flue gas sampling probe, optionally, a temperature sensing device is connected to the support plate.

[0022] (III) Beneficial effects

[0023] A flue gas sampling probe with convenient disassembly and assembly and constant temperature functions provided by the present invention has the following beneficial effects:

[0024] (1) In the present invention, a constant temperature mechanism is provided in the outer shell. The constant temperature mechanism is provided with a constant temperature component, a heating box, and a refrigeration box. The constant temperature component can heat and refrigerate the water in the heating box and the refrigeration box respectively. The temperature sensor can detect the temperature of the outer shell. When the detected temperature is too high, the transfer and circulation component circulates the water flow in the refrigeration box. When the detected temperature is too low, the transfer and circulation component circulates the water flow in the heating box. This way can achieve constant temperature in the outer shell, thereby ensuring the constant temperature of the telescopic rod and the inside of the housing, ensuring that the smoke does not condense without reducing the service life of the parts, and at the same time can effectively reduce the generation of condensed water. The switching mechanism can be used for automatic replacement of the filter net.

[0025] (2) In the present invention, a switching mechanism is provided in the outer shell. The switching mechanism includes a switching component and a filtering component. The switching component is connected to the filtering component, and both the switching component and the filtering component have multiple units. When the filtering component has been used for too long and its filtering performance deteriorates, the filtering component can be quickly replaced by the rotation of the second motor, greatly improving the service life and enhancing the convenience of replacement and maintenance. At the same time, the filtering component can be connected to the telescopic rod through the sliding rod. When the filtering component needs to be replaced, the electric push rod can push the trigger rod, thereby compressing the spring to complete the pre-loosening of the filtering component and the telescopic rod, and the disassembly can be completed under the rotation of the second motor. This method realizes the quick replacement of the filtering component, improves the efficiency, and ensures the service life.

[0026] (3) In the present invention, a telescopic rod is provided in the outer shell. The telescopic rod is inserted into the flue gas treatment hole and the telescopic hole. A toothed groove is provided on the telescopic rod, and the driving mechanism can control the telescopic movement of the telescopic rod by driving the main control gear. The inside of the telescopic rod is hollow, and a filtering component is provided in the hollow interior of the telescopic rod. This setting can conveniently drive the telescopic movement of the telescopic rod to complete the collection and detection of flue gas.

[0027] (4) In the present invention, an external thread is provided on the bottom shell, and an internal thread is provided on the top shell. The bottom shell is in threaded cooperation with the top shell. Threaded holes are provided on the bottom shell and the top shell, and bolts pass through the threaded holes to connect the bottom shell and the top shell. This method can conveniently disassemble / install to complete the maintenance of the equipment and the replacement of the filtering component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 is a perspective view of a flue gas sampling probe with convenient disassembly / assembly and constant temperature function according to the present invention;

[0030] Figure 2 is a cross-sectional view of a flue gas sampling probe with convenient disassembly / assembly and constant temperature function according to the present invention;

[0031] Figure 3 is a sectional view of a flue gas sampling probe with convenient disassembly / assembly and constant temperature function according to the present invention;

[0032] Figure 4 is the present invention Figure 3 is an enlarged schematic view of A in;

[0033] Figure 5 Partial structural schematic diagram of the switching mechanism of a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions according to the present invention;

[0034] Figure 6 Partial structural schematic diagram of the driving mechanism of a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions according to the present invention;

[0035] Figure 7 Partial structural schematic diagram of the filter assembly of a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions according to the present invention;

[0036] Figure 8 Partial structural cross-sectional schematic diagram of the filter assembly of a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions according to the present invention;

[0037] Figure 9 Partial structural cross-sectional schematic diagram of the replacement port of the telescopic rod of a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions according to the present invention.

[0038] The corresponding component names for the reference numerals in the figures are: 1, housing; 11, bottom housing; 12, top housing; 13, flue gas treatment hole; 14, support plate; 15, telescopic hole; 2, telescopic rod; 21, tooth groove; 3, driving mechanism; 31, first motor; 32, first transmission shaft; 33, driving gear; 4, constant temperature mechanism; 41, spiral groove tube; 42, constant temperature component; 43, heating box; 44, refrigeration box; 45, transfer component; 46, water pump; 47, transfer box; 48, first pipeline; 49, second pipeline; 491, third pipeline; 492, fourth pipeline; 5, switching mechanism; 51, switching component; 52, filter component; 53, second motor; 54, second transmission shaft; 55, connecting rod; 56, electric push rod; 57, filter net; 58, filter housing; 59, sliding rod; 60, trigger rod; 61, elastic space; 62, first limiting plate; 63, spring; 64, guiding groove; 65, threaded hole; 66, temperature sensing device. Detailed implementation manners

[0039] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The following describes the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0041] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0042] It also needs to be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The diagrams only show the components related to the present application rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0043] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0044] The following describes the technical solutions provided by each embodiment of the present application in conjunction with the accompanying drawings.

[0045] Refer to Figures 1 to 9, the present invention provides a flue gas sampling probe with convenient disassembly and assembly and constant temperature functions, including a housing 1, a telescopic rod 2, a driving mechanism 3, a constant temperature mechanism 4, and a switching mechanism 5. Among them, the telescopic rod 2 is inserted into the housing 1, the driving mechanism 3 is used to drive the telescopic rod 2 to extend and retract, the constant temperature mechanism 4 is arranged in the housing, and the constant temperature mechanism 4 is used to ensure that the temperature inside the telescopic rod 2 and the housing is constant, ensuring that smoke does not condense without reducing the service life of parts, and at the same time can effectively reduce the generation of condensed water. The switching mechanism 5 can be used for automatic replacement of the filter screen 57.

[0046] In Figures 1 to 9 In an optional embodiment, the housing 1 includes a bottom housing 11 and a top housing 12. The bottom housing 11 has a flue gas treatment hole 13. A support plate 14 is provided in the middle of the bottom housing 11. External threads are provided on the outer wall of the bottom housing 11. A telescopic hole 15 is provided in the middle of the top housing 12. Internal threads are provided inside the top housing 12. The bottom housing 11 is threadedly connected to the top housing 12.

[0047] Furthermore, threaded holes 65 are provided on both the bottom housing 11 and the top housing 12. Bolts pass through the threaded holes 65 to fix the bottom housing 11 and the top housing 12. Through the cooperation of the bolts and the threaded connection, the bottom housing 11 and the top housing 12 can be firmly fixed. At the same time, optionally, a sealing ring is also provided between the top housing 12 and the top housing 12.

[0048] In Figures 1 to 8 In an optional embodiment, for the telescopic rod 2, one end of the telescopic rod 2 is inserted into the telescopic hole 15, the other end of the telescopic rod 2 is inserted into the flue gas treatment hole 13, and a tooth groove 21 is provided on the telescopic rod 2.

[0049] Furthermore, the inside of the telescopic rod 2 is hollow. A replacement port is provided on one side of the telescopic rod 2 close to the switching mechanism. The filter assembly 52 extends into the hollow interior of the telescopic rod 2 from the replacement port and is fixedly attached to the hollow interior of the telescopic rod 2.

[0050] In Figures 1 to 8 In an optional embodiment, the driving mechanism 3 includes a first motor 31, a first transmission shaft 32, and a driving gear 33. The first motor 31 is connected to the support plate 14, the first transmission shaft 32 is connected to the output shaft of the first motor 31, the driving gear 33 meshes with the tooth groove 21, and the first motor 31 drives the telescopic rod 2 to move.

[0051] It should be noted that a temperature sensing device 66 is connected to the support plate 14. The temperature sensing device 66 can detect the temperature of the present invention and transmit the temperature data to an external processor, and the processor adjusts the internal situation according to the actual situation.

[0052] InFigures 1 to 8 In an alternative embodiment, the constant temperature mechanism 4 includes a spiral groove tube 41, a constant temperature component 42, a heating box 43, a refrigeration box 44, and a transfer and conveying component 45. Both ends of the constant temperature component 42 are respectively connected to the heating box 43 and the refrigeration box 44. The heating end of the constant temperature component 42 is disposed inside the heating box 43, and the refrigeration end of the constant temperature component 42 is disposed inside the refrigeration box 44. The spiral groove tube 41 is provided in the bottom shell 11. The heating box 43 and the refrigeration box 44 are connected to the spiral groove tube 41 through the transfer and conveying component 45, and the transfer and conveying component 45 automatically adjusts the water circulation in the heating box 43 / refrigeration box 44.

[0053] Further, the transfer and conveying component 45 includes a water pump 46 and a transfer box 47. The water pump 46 is connected to the heating box 43, and the transfer box 47 is connected to the support plate 14.

[0054] Further, the heating box 43 and the refrigeration box 44 are respectively connected to the water pump 46 through a first pipe 48. The water pump 46 is connected to one end of the spiral groove tube 41 through a second pipe 49. The other end of the spiral groove tube 41 is connected to the transfer box 47 through a third pipe 491. The transfer box 47 is respectively connected to the heating box 43 and the refrigeration box 44 through a fourth pipe 492.

[0055] In Figures 1 to 9 In an alternative embodiment, the switching mechanism 5 is disposed on one side of the telescopic rod 2 and inside the top shell 12. The switching mechanism 5 includes a switching component 51 and a filtering component 52.

[0056] Further, the switching component 51 further includes a second motor 53, a second transmission shaft 54, and a connecting rod 55. The second motor 53 is connected to the support plate 14. The second transmission shaft 54 is connected to the output end of the second motor 53. The connecting rod 55 is connected to the second transmission shaft 54. The second motor 53 drives the connecting rod 55 to rotate, and the connecting rod 55 is connected to the filtering component 52.

[0057] Further, both the filtering component 52 and the connecting rod 55 have four. The four connecting rods 55 are evenly distributed around the second transmission shaft 54.

[0058] Further, the switching component 51 includes four electric push rods 56. The four electric push rods 56 are respectively connected to the four connecting rods 55, and the electric push rod 56 abuts against the filtering component 52.

[0059] Further, the filtering component 52 includes a filter screen 57, a filter housing 58, a sliding rod 59, a trigger rod 60, an elastic space 61, a first limiting plate 62 and a spring 63. The filter screen 57 is connected to the filter housing 58. An elastic space 61 is provided inside the rear part of the filter housing 58. The first limiting plate 62 and the spring 63 are arranged in the elastic space 61. The first limiting plate 62 is connected to the middle part of the sliding rod 59. A through hole adapted to the position of the replacement port is connected to the upper part of the elastic space 61. The upper part of the sliding rod 59 passes through the through hole. A blind hole is connected to the lower part of the elastic space 61. The lower part of the sliding rod 59 is arranged in the blind hole. One end of the spring 63 is connected to the first limiting plate 62, and the other end of the spring 63 is connected to the elastic space 61. A guiding groove 64 is provided at the lower part of the sliding rod 59. The bottom surface of the guiding groove 64 is inclined, and the trigger rod 60 is arranged adjacent to the guiding groove 64. The electric push rod 56 abuts against the trigger rod 60.

[0060] It should be noted that the constant temperature component 42 includes a plurality of P-type semiconductors and N-type semiconductors. The plurality of P-type semiconductors and N-type semiconductors are connected with metal conductors and ceramic sheets to form a refrigerating end and a heating end.

[0061] A flue gas sampling probe with the functions of convenient disassembly and assembly and constant temperature according to the present invention has the following specific steps:

[0062] By arranging a constant temperature mechanism 4 in the outer shell 1, and arranging a constant temperature component 42, a heating box 43 and a refrigerating box 44 in the constant temperature mechanism 4, the constant temperature component 42 can heat and refrigerate the water in the heating box 43 and the refrigerating box 44 respectively. The temperature sensor can detect the temperature of the outer shell 1. When the detected temperature is too high, the transfer and conveying component 45 circulates the water flow in the refrigerating box 44. When the detected temperature is too low, the transfer and conveying component 45 circulates the water flow in the heating box 43. This way can achieve constant temperature in the outer shell 1, thereby ensuring the constant temperature of the telescopic rod 2 and the inside of the housing, ensuring that the smoke does not condense without loss of the part life, and at the same time can effectively reduce the generation of condensed water. The switching mechanism 5 can be used for automatically replacing the filter screen 57.

[0063] By arranging a switching mechanism 5 in the housing 1, the switching mechanism 5 includes a switching component 51 and a filtering component 52. The switching component 51 is connected to the filtering component 52, and both the switching component 51 and the filtering component 52 are provided in plurality. When the filtering component 52 has been used for too long and its filtering performance deteriorates, the filtering component 52 can be quickly replaced by the rotation of the second motor 53, which greatly improves the service life and enhances the convenience of replacement and maintenance. Specifically, the filtering component 52 can abut against the inner wall of the replacement opening on the telescopic rod 2 through the sliding rod 59, so that the filtering component 52 is connected to the telescopic rod 2 and fixed inside the central control of the telescopic rod 2. When the filtering component 52 needs to be replaced, the electric push rod 56 can push the trigger rod 60, causing the front end of the trigger rod 60 to move forward. Since the bottom surface of the guiding groove 64 in contact with the front end of the trigger rod 60 is inclined, the sliding rod 59 is driven by the trigger rod 60 and moves downward. Thus, the first limiting plate 62 on the sliding rod 59 moves downward and compresses the spring 63, so that the sliding rod 59 no longer abuts against the inner wall of the replacement opening on the telescopic rod 2, completing the pre-loosening of the filtering component 52 and the telescopic rod 2. Under the rotation of the second motor 53, the second transmission shaft 54 drives the four connecting rods 55 to rotate, thereby replacing another group of filtering components 52. This method completes the rapid replacement of the filtering component 52, improves the efficiency, and ensures the service life.

[0064] By arranging a telescopic rod 2 in the housing 1, the telescopic rod 2 is inserted into the flue gas treatment hole 13 and the telescopic hole 15. A tooth groove 21 is provided on the telescopic rod 2. The driving mechanism 3 can control the telescopic movement of the telescopic rod 2 by driving the main control gear. The inside of the telescopic rod 2 is hollow, and a filtering component 52 is arranged in the hollow inside of the telescopic rod 2. This setting can conveniently drive the telescopic movement of the telescopic rod 2, thereby completing the collection and detection of flue gas.

[0065] By providing an external thread on the bottom end housing 11 and an internal thread on the top end housing 12, the bottom end housing 11 is in threaded fit with the top end housing 12. Thread holes 65 are provided on the bottom end housing 11 and the top end housing 12, and bolts pass through the thread holes 65 to connect the bottom end housing 11 and the top end housing 12. This method can be conveniently disassembled / installed to complete the maintenance of the equipment and the replacement of the filtering component 52.

[0066] For the same and similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0067] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A flue gas sampling probe with easy disassembly and constant temperature function, characterized in that: include: A housing (1), the housing (1) comprising a bottom housing (11) and a top housing (12), the bottom housing (11) having a smoke treatment hole (13), a support plate (14) being provided at the middle end of the bottom housing (11), and a telescopic hole (15) being provided at the middle end of the top housing (12); A telescopic rod (2), one end of the telescopic rod (2) being inserted into the telescopic hole (15), the other end of the telescopic rod (2) being inserted into the flue gas treatment hole (13), and a tooth groove (21) being provided on the telescopic rod (2); A driving mechanism (3), the driving mechanism (3) comprising a first motor (31), a first transmission shaft (32) and a driving gear (33), the first motor (31) being connected to the support plate (14), the first transmission shaft (32) being connected to an output shaft of the first motor (31), and the driving gear (33) being meshed with the tooth groove (21); A constant temperature mechanism (4), the constant temperature mechanism (4) comprising a spiral grooved tube (41), a constant temperature component (42), a heating box (43), a refrigeration box (44) and a transfer and conveying component (45), the two ends of the constant temperature component (42) being respectively connected to the heating box (43) and the refrigeration box (44), the spiral grooved tube (41) being opened in the bottom end shell (11), the heating box (43) and the refrigeration box (44) being connected to the spiral grooved tube (41) via the transfer and conveying component (45); A switching mechanism (5), wherein the switching mechanism (5) is arranged on one side of the telescopic rod (2), and the switching mechanism (5) comprises a switching component (51) and a filtering component (52).

2. The flue gas sampling probe according to claim 1, characterized in that: The heating end of the thermostatic component (42) is arranged inside the heating box (43), and the cooling end of the thermostatic component (42) is arranged inside the cooling box (44); the thermostatic component (42) comprises a plurality of P-type semiconductors and N-type semiconductors, and the plurality of P-type semiconductors and N-type semiconductors are connected with metal conductors and ceramic sheets to form a cooling end and a heating end; The transfer conveying assembly (45) comprises a water pump (46) and a transfer box (47); the water pump (46) is connected to the heating box (43); and the transfer box (47) is connected to the support plate (14).

3. The flue gas sampling probe according to claim 2, characterized in that: The heating box (43) and the refrigeration box (44) are respectively connected to the water pump (46) through a first pipe (48); the water pump (46) is connected to one end of the spiral groove pipe (41) through a second pipe (49); the other end of the spiral groove pipe (41) is connected to the transfer box (47) through a third pipe (491); and the transfer box (47) is respectively connected to the heating box (43) and the refrigeration box (44) through a fourth pipe (492).

4. The flue gas sampling probe according to claim 1, characterized in that: The switching assembly (51) comprises a second motor (53), a second transmission shaft (54) and a connecting rod (55); the second motor (53) is connected to the support plate (14); the second transmission shaft (54) is connected to the output end of the second motor (53); the connecting rod (55) is connected to the second transmission shaft (54); the second motor (53) drives the connecting rod (55) to rotate; and the connecting rod (55) is connected to the filter assembly (52).

5. The flue gas sampling probe according to claim 4, characterized in that: The filter assembly (52) and the connecting rods (55) are both four in number, and the four connecting rods (55) are distributed around the second transmission shaft (54) at equal intervals.

6. The flue gas sampling probe according to claim 5, characterized in that: The switching assembly (51) comprises four electric push rods (56), the four electric push rods (56) are respectively connected to four connecting rods (55), and the electric push rods (56) are in abutment with the filter assembly (52).

7. The flue gas sampling probe according to claim 6, characterized in that: The telescopic rod (2) is hollow inside, and a replacement port is provided on a side of the telescopic rod (2) close to the switching mechanism. The filter assembly (52) extends from the replacement port into the hollow interior of the telescopic rod (2) and is fitted and fixed to the hollow interior of the telescopic rod (2).

8. The flue gas sampling probe according to claim 7, characterized in that: The filter assembly (52) comprises a filter screen (57), a filter shell (58), a sliding rod (59), a trigger rod (60), an elastic space (61), a first limiting plate (62) and a spring (63); the filter screen (57) is connected to the filter shell (58); the elastic space (61) is arranged on the inner side of the rear portion of the filter shell (58); the first limiting plate (62) and the spring (63) are arranged in the elastic space (61); the first limiting plate (62) is connected to the middle portion of the sliding rod (59); the upper portion of the elastic space (61) is connected to the replacement port The upper part of the sliding rod (59) passes through the through hole, the lower part of the elastic space (61) is connected with a blind hole, the lower part of the sliding rod (59) is arranged in the blind hole, one end of the spring (63) is connected with the first limiting plate (62), the other end of the spring (63) is connected with the elastic space (61), the lower part of the sliding rod (59) is provided with a guide groove (64), the bottom surface of the guide groove (64) is inclined, the trigger rod (60) is adjacent to the guide groove (64), and the electric push rod (56) is in contact with the trigger rod (60).

9. The flue gas sampling probe according to claim 1, characterized in that: The bottom shell (11) and the top shell (12) are both provided with threaded holes (65), and bolts pass through the threaded holes (65) to fix the bottom shell (11) and the top shell (12).

10. The flue gas sampling probe according to claim 1, characterized in that: The support plate (14) is connected to a temperature sensor (66).

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