Gas sampling probe with heating module capable of being quickly disassembled and assembled

Abstract

The utility model provides a gas sampling probe with a heating module capable of being quickly disassembled and assembled, and relates to the technical field of sampling probes. Comprising a shell part, a filtering part and a heating part, the shell part comprises an inner shell and an outer shell, the filtering part comprises a filter element, and the heating part comprises a heating lantern ring; the filter element is installed in the inner shell made of a heat conduction material, the heating lantern ring is arranged on the outer side of the inner shell in a sleeving mode and corresponds to the filter element in position, and the outer shell is arranged on the outer side of the heating lantern ring in a sleeving mode; the heating lantern ring comprises a lantern ring shell made of a deformable and heat-conducting material, an open groove enabling the lantern ring shell to be in a non-closed connection shape is formed in the lantern ring shell, and a heating element is arranged in the lantern ring shell. On the basis, the gas sampling probe solves the problem that a heating structure in an existing gas sampling probe cannot be independently disassembled or assembled or is difficult to quickly disassemble and assemble in practical application.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling probes, in particular to a gas sampling probe with a heating module capable of being quickly disassembled and assembled. Background Art

[0002] In the field of gas detection, it is often necessary to pass the gas to be detected into the detection instrument through a sampling probe, so the sampling probe is considered an important structural component of the gas detection system. To facilitate subsequent analysis and processing by the detection instrument, the sampling probe usually needs to have the functions of preliminary filtering and heating, so that the gas passed into the detection instrument is free of large particles and meets the temperature requirements. Based on this, most gas sampling probes in the prior art include filtering structures and heating structures; however, the heating structures in existing sampling probes have limitations in practical applications, specifically:

[0003] Existing heating structures are usually integrated with other structures of the sampling probe or connected through connectors, which makes it impossible to quickly disassemble and assemble. As a result, when the heating structure fails, it is impossible to replace the heating structure alone or the replacement operation is cumbersome. In addition, current heating structures mostly use heating rods for heating, which have problems such as inconvenient structure, prone to failure, and uneven heating. For example, the patent with announcement number CN222952049U provides a sampling probe, which includes a heating cavity, a sampling probe connected to the heating cavity via a flange, and two heating rods symmetrically connected inside the heating cavity.

[0004] In summary, the utility model provides a gas sampling probe with a heating module that can be quickly disassembled and assembled. Utility Model Content

[0005] The purpose of the present utility model is to provide a gas sampling probe with a quickly detachable heating module, so as to solve the problem mentioned in the above background technology that the heating structure in the existing gas sampling probe cannot be disassembled separately or is difficult to disassemble quickly in actual application.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] A gas sampling probe with a quickly detachable heating module comprises a shell portion, a filter portion and a heating portion, the shell portion being provided with an air inlet and an air outlet. In the utility model: the shell portion comprises an inner shell portion and an outer shell portion, the filter portion comprises a filter core, and the heating portion comprises a heating ring; the filter core is installed in an inner shell portion made of a heat-conducting material, the heating ring is sleeved on the outside of the inner shell portion and its position corresponds to the filter core, and the outer shell portion is sleeved on the outside of the heating ring; the heating ring comprises a ring shell made of a deformable and heat-conducting material, the ring shell being provided with a groove that makes it a non-closed connection shape, and a heating element is provided inside the ring shell.

[0008] In the gas sampling probe provided by the present invention, since the ring shell of the heating ring is made of a deformable material and is provided with a slot that makes it a non-closed connection shape, the width of the slot can be flexibly adjusted by hand during use, thereby enabling the heating ring to be quickly disassembled and assembled. Specifically, for the heating ring that needs to be replaced, it can be removed from the inner shell by appropriately increasing the slot width; and then the slot of the new heating ring is appropriately increased, and the new heating ring can be fitted on the inner shell. After the fitting is completed, the slot width is reduced again, so that the heating ring will not fall out from the outside of the inner shell. In addition, the present invention no longer uses an independent heating rod, but instead arranges the heating element inside the ring shell, thereby achieving a uniform heating effect and having the advantage of a relatively simple overall structure.

[0009] Furthermore, an installation space is provided between the inner shell wall and the outer shell wall of the annular shell, and the heating element adopts a heating wire or a heating plate laid in the installation space; the heating element is connected to one end of the wire, and the other end of the wire extends out of the annular shell and the shell part.

[0010] Furthermore, the inner shell includes an assembly section, a filter section and a chassis section connected in sequence, and the assembly section, the filter section and the chassis section are all designed to be open at both ends and have hollow spaces inside. The hollow spaces inside the assembly section, the filter section and the chassis section are connected; a filter core is installed in the hollow space of the filter section, and a heating ring is provided on the outside of the filter section.

[0011] Furthermore, the assembly section is a necked disc flange structure, the filter section is a hollow cylindrical structure, and the chassis section is a stepped cylindrical nested structure; the assembly section includes a coaxially distributed assembly disc and an assembly ring; the chassis section includes a coaxially distributed mating disc, a sealing ring and a support disc; one end of the filter section is connected to the assembly disc of the assembly section, and the other end passes through the mating disc and the sealing ring in sequence and is connected to the support disc.

[0012] Furthermore, the outer shell has a hollow cylindrical nested structure, and its inner cavity shape is adapted to the assembly section, filter section and chassis section of the inner shell; one end of the outer shell is connected to the outer circumferential surface of the assembly disc of the assembly section, and the other end is connected to the matching disc of the chassis section.

[0013] Furthermore, an air outlet hole is provided on the assembly ring of the assembly section, and a cable lead-through groove is provided on the sealing ring of the chassis section.

[0014] Furthermore, the filtering part also includes an assembly component, which includes a sealing disc and an internally threaded cylindrical pin, and the internally threaded cylindrical pin is connected to one of the surfaces of the sealing disc; the size of the sealing disc is adapted to the size of the assembly ring, and the end of the filter element is provided with an externally threaded fastener, and the external thread of the externally threaded fastener is adapted to the internal thread of the internally threaded cylindrical pin.

[0015] Furthermore, the filtering part also includes a locking assembly, which includes a rotating rod, a screw, a nut, a limiting rod and two limiting columns; the rotating rod is connected to one end of the screw in a vertical distribution relationship, and the other end of the screw is threaded through the limiting rod and extends into the nut, and the nut is connected to the other surface of the sealing disc; "U"-shaped slots are respectively provided on both ends of the limiting rod, and the opening directions of the two slots are opposite; the lower ends of the two limiting columns are symmetrically connected to the annular surface of the assembly ring, and the upper ends are respectively engaged with the two slots.

[0016] The beneficial effects achieved by the utility model are:

[0017] A gas sampling probe with a quickly removable heating module is provided. The probe comprises a heating portion including a heating collar. The collar shell of the heating collar is made of a deformable material and is provided with a slot that creates a non-enclosed connection. Therefore, when using the gas sampling probe, the heating collar can be quickly removed and assembled by adjusting the width of the slot. Therefore, compared to existing gas sampling probes that cannot be individually removed or have difficulty in quickly removing the heating module, the present invention allows for simpler and faster removal of the heating module, resulting in greater practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a heating collar in a gas sampling probe according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the inner shell of the gas sampling probe according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the outer shell of the gas sampling probe according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the assembled inner shell and outer shell of the gas sampling probe according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the filter element, assembly component, and locking component assembled in the gas sampling probe according to an embodiment of the present utility model;

[0023] Figure 6This is a schematic diagram of the overall structure of the gas sampling probe according to an embodiment of the present utility model;

[0024] In the figure: 1. Ring shell; 2. Slot; 3. Wire; 4. Assembly ring; 5. Assembly disc; 6. Filter section; 7. Matching disc; 8. Sealing ring; 9. Support disc; 10. Air outlet hole; 11. Shell body; 12. Rotating rod; 13. Slot; 14. Nut; 15. Internally threaded cylindrical pin; 16. Filter element; 17. Screw; 18. Limit rod; 19. Sealing disc; 20. Limit column. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] Example 1

[0027] This embodiment provides a gas sampling probe with a heating module that can be quickly disassembled, including a housing portion, a filter portion, and a heating portion. For details, please refer to Figures 1 to 6 , in this embodiment:

[0028] The housing includes an inner housing and an outer housing. The filter portion includes a filter core 16, and the heating portion includes a heating collar. The filter core 16 is installed in the inner housing made of heat-conducting material. The heating collar is sleeved on the outside of the inner housing and its position corresponds to the filter core 16. The outer housing is sleeved on the outside of the heating collar.

[0029] The inner shell includes an assembly section, a filter section 6 and a chassis section connected in sequence. The assembly section, the filter section 6 and the chassis section are all designed to be open at both ends and have hollow spaces inside. The hollow spaces inside the three are connected; a filter core 16 is installed in the hollow space of the filter section 6, and a heating ring is sleeved on the outside of the filter section 6.

[0030] The assembly section is a flange-like structure with a necked disc, the filter section 6 is a hollow cylindrical structure, and the chassis section is a stepped cylindrical nested structure. The assembly section includes a coaxially distributed assembly disc 5 and an assembly ring 4, with the diameter of the assembly disc 5 being larger than the diameter of the assembly ring 4. The chassis section includes a coaxially distributed mating disc 7, a sealing ring 8, and a support disc 9, with the diameter relationship being that the support disc 9 is larger than the mating disc 7 and larger than the sealing ring 8. One end of the filter section 6 is connected to the assembly disc 5 of the assembly section, and the other end passes through the mating disc 7 and the sealing ring 8 in sequence before being connected to the support disc 9. The assembly ring 4 of the assembly section is provided with an air outlet hole 10 (and a backflush hole for introducing backflush gas), the sealing ring 8 of the chassis section is provided with a cable guide slot, and the bottom opening of the support disc 9 can be used as an air inlet.

[0031] The outer shell has a hollow cylindrical nested structure, and its inner cavity shape is adapted to the assembly section, filter section 6 and chassis section of the inner shell; the outer shell includes a shell body 11 with a hollow cylindrical structure, and a disc is sleeved on one end of the shell body 11; one end of the shell body 11 sleeved with the disc is matched with the matching disc 7 of the chassis section (specifically, it can be connected by a screw hole, screw or other connection structure), and the other end of the shell body 11 is connected to the outer circumferential surface of the assembly disc 5 of the assembly section (that is, the shell body 11 is sleeved on the outside of the assembly disc 5).

[0032] The heating collar comprises a collar shell 1 made of a deformable, thermally conductive material. The collar shell 1 is provided with a slot 2 that creates a non-enclosed connection. A heating element is housed within the collar shell 1. A mounting space is defined between the inner and outer walls of the collar shell 1. The heating element, consisting of heating wires evenly laid within the mounting space, connects the two ends of the heating element to one end of two wires 3, one for power and one for neutral. The other ends of the wires 3 extend beyond the collar shell 1 and pass through the cable entry slots to exit the housing.

[0033] The filter section also includes an assembly component and a locking assembly. The assembly component includes a sealing disc 19 and an internally threaded cylindrical pin 15. The internally threaded cylindrical pin 15 is connected to one surface of the sealing disc 19. The size of the sealing disc 19 matches that of the assembly ring 4 (in this embodiment, the sealing disc 19 can be embedded in the assembly ring 4). The end of the filter element 16 is provided with an externally threaded fastener (in this embodiment, a threaded sleeve). The external thread of the externally threaded fastener matches the internal thread of the internally threaded cylindrical pin 15 (i.e., the externally threaded fastener can be tightened into the internally threaded cylindrical pin 15). The locking assembly includes a rotating rod 12, a screw 17, a nut 14, a limiting rod 18 and two limiting columns 20; the rotating rod 12 is connected to one end of the screw 17 in a vertical distribution relationship, and the other end of the screw 17 is threaded through the limiting rod 18 and extends into the nut 14, and the nut 14 is connected to the center position of the other surface of the sealing disc 19; "U"-shaped slots 13 are respectively provided on both ends of the limiting rod 18, and the opening directions of the two slots 13 are opposite; the lower ends of the two limiting columns 20 are symmetrically connected (specifically, by screw holes, screws and other connecting structures) on the annular surface of the assembly ring 4, and the upper ends of the two limiting columns 20 are both provided with a "T"-shaped part, the diameter of the upper half of the "T"-shaped part is larger than the diameter of the slot 13, and the diameter of the lower half is smaller than the diameter of the slot 13, so the "T"-shaped part is clamped in the slot 13.

[0034] Based on the above structure, the gas sampling probe provided in this embodiment can achieve a quick disassembly and assembly effect. Specifically, take the operation method of assembling the various parts as an example: for the dispersed inner shell, outer shell, heating sleeve, filter element 16, assembly component and locking component, when assembling, first appropriately increase the width of the slot 2 of the heating sleeve to fit the heating sleeve on the outside of the filter section 6 of the inner shell, and then pass the two wires 3 through the cable lead-through slot on the chassis section of the inner shell, and appropriately reduce the width of the slot 2 of the heating sleeve so that it fits on the outside of the filter section 6; secondly, fit the outer shell on the inner shell, and assemble the disc at the end of the outer shell body 11 and the matching disc 7 of the inner shell into one. Start; then screw the external thread fastener at the end of the filter element 16 into the internal thread cylindrical pin 15 to connect the filter element 16 to the sealing disc 19. At this time, the upper end of the sealing disc 19 comes with a matched nut 14, screw 17, limit rod 18 and rotating rod 12; then put the filter element 16 into the hollow space inside the filter section 6 of the inner shell through the openings on the assembly ring 4 and the assembly disc 5 of the inner shell; finally, symmetrically install the two limit columns 20 on the annular surface of the assembly ring 4 of the inner shell, and clamp the ends of the two limit columns 20 into the slots 13 of the limit rod 18, and then tighten the screw 17 into the nut 14 by rotating the rotating rod 12, thereby completing the assembly of the gas sampling probe. In actual application, if the heating collar or filter element 16 needs to be quickly disassembled, the above corresponding links can be reversed.

[0035] It should be noted that the parts not described in detail or expanded in the above scheme are all prior art, which do not belong to the improvements made by the present invention on the prior art, nor do they belong to the scope of protection of the technical solution of the present invention, so they will not be described in detail in this article. Of course, the above content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of the embodiment of the present invention. The present invention is not limited to the above examples. Equal changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent coverage of the present invention.

Claims

1. A gas sampling probe with a quick-detachable heating module, comprising a housing, a filter, and a heating portion, wherein the housing is provided with an air inlet and an air outlet, and characterized in that: The shell part includes an inner shell and an outer shell, the filter part includes a filter core (16), and the heating part includes a heating ring; the filter core (16) is installed in the inner shell made of heat-conducting material, the heating ring is sleeved on the outside of the inner shell and its position corresponds to the filter core (16), and the outer shell is sleeved on the outside of the heating ring; the heating ring includes a ring shell (1) made of deformable and heat-conducting material, the ring shell (1) is provided with a groove (2) to make it a non-closed connection shape, and a heating element is provided inside the ring shell (1).

2. The gas sampling probe with a quick-detachable heating module according to claim 1, characterized in that: An installation space is provided between the inner shell wall and the outer shell wall of the sleeve shell (1); the heating element adopts a heating wire or a heating plate laid in the installation space; the heating element is connected to one end of a wire (3), and the other end of the wire (3) extends out of the sleeve shell (1) and the shell part.

3. The gas sampling probe with a quick-detachable heating module according to claim 2, characterized in that: The inner shell comprises an assembly section, a filter section (6) and a chassis section which are connected in sequence. The assembly section, the filter section (6) and the chassis section are all designed to be open at both ends and have hollow spaces inside. The hollow spaces inside the assembly section, the filter section (6) and the chassis section are connected. A filter core (16) is installed in the hollow space of the filter section (6), and a heating ring is sleeved on the outside of the filter section (6).

4. The gas sampling probe with a quick-detachable heating module according to claim 3, characterized in that: The assembly section is a flange-shaped structure with a necked disc, the filter section (6) is a hollow cylindrical structure, and the chassis section is a stepped cylindrical nested structure; the assembly section comprises a coaxially distributed assembly disc (5) and an assembly ring (4); the chassis section comprises a coaxially distributed matching disc (7), a sealing ring (8), and a supporting disc (9); one end of the filter section (6) is connected to the assembly disc (5) of the assembly section, and the other end passes through the matching disc (7) and the sealing ring (8) in sequence and is then connected to the supporting disc (9).

5. The gas sampling probe with a quick-detachable heating module according to claim 4, characterized in that: The outer shell is a hollow cylindrical nested structure, and its inner cavity shape is adapted to the assembly section, the filter section (6) and the chassis section of the inner shell; wherein one end of the outer shell is connected to the outer peripheral surface of the assembly disc (5) of the assembly section, and the other end is connected to the matching disc (7) of the chassis section.

6. The gas sampling probe with a quick-detachable heating module according to claim 5, characterized in that: An air outlet hole (10) is provided on the assembly ring (4) of the assembly section, and a cable lead-through groove is provided on the sealing ring (8) of the chassis section.

7. The gas sampling probe with a quick-detachable heating module according to claim 5, characterized in that: The filter part also includes an assembly component, which includes a sealing disc (19) and an internally threaded cylindrical pin (15). The internally threaded cylindrical pin (15) is connected to one of the surfaces of the sealing disc (19); the size of the sealing disc (19) is adapted to the size of the assembly ring (4); the end of the filter core (16) is provided with an externally threaded fastener, and the external thread of the externally threaded fastener is adapted to the internal thread of the internally threaded cylindrical pin (15).

8. The gas sampling probe with a quick-detachable heating module according to claim 7, characterized in that: The filtering part also includes a locking assembly, which includes a rotating rod (12), a screw rod (17), a nut (14), a limiting rod (18) and two limiting columns (20); the rotating rod (12) is connected to one end of the screw rod (17) in a vertical distribution relationship, and the other end of the screw rod (17) is threaded through the limiting rod (18) and then extends into the nut (14), and the nut (14) is connected to the other surface of the sealing disc (19); "U"-shaped card grooves (13) are respectively provided on both ends of the limiting rod (18), and the opening directions of the two card grooves (13) are opposite; the lower ends of the two limiting columns (20) are symmetrically connected to the annular surface of the assembly ring (4), and the upper ends are respectively engaged with the two card grooves (13).

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