A thermal desorption adsorption tube

Abstract

The utility model relates to a thermal desorption adsorption tube, comprising a temperature control head, a core heating rod and an adsorption tube body. The temperature control head is bolted to one end of the core heating rod, the adsorption tube body is installed in the core heating rod, the adsorption tube body comprises a conical connector, a connecting pipe and an adsorption part, the conical connector is threadedly connected to the other end of the core heating rod, a limiting ring is fixed on the core heating rod, the connecting pipe is sleeved on the core heating rod, one end of the connecting pipe is fitted with the limiting ring, and the other end of the connecting pipe is fitted on the conical connector, the inner side of the adsorption part is provided with the connecting piece, the adsorption part is detachably connected to the connecting part through the connecting piece, and a corrugated adsorption layer for adsorbing organic matter is provided on the outer side of the adsorption part, wherein the connecting piece comprises an end ring, a torsion spring and a V-shaped clamping block; the design of the connecting piece and the adsorption part uses the connecting piece to realize rapid disassembly of the adsorption part, which is convenient for replacing the adsorption part, reduces the use cost of the adsorption tube, and improves the adsorption effect.

Description

Technical Field

[0001] The utility model relates to the technical field of adsorption tubes, and more specifically to a thermal desorption adsorption tube. Background Art

[0002] Thermal desorption is actually a combination of technologies that extracts volatiles from complex matrices and concentrates them for GC or GC / MS analysis. The most convenient method is to extract a known volume from a thermal desorption tube filled with one or more adsorbents. Thermal desorption can selectively convert pollutants from one phase to another by adjusting the heating temperature and residence time. There is no destructive effect on organic pollutants during the remediation process. By controlling the temperature of the thermal desorption system and the residence time of the contaminated soil, the pollutants can be selectively volatilized without chemical reactions such as oxidation and decomposition.

[0003] For the current thermal desorption adsorption tube, a corresponding solution has been developed to address the following problems:

[0004] In the use of traditional thermal desorption adsorption tubes, one-piece adsorption tubes are usually used. The one-piece adsorption tubes are inconvenient to replace during use and have high maintenance costs. In addition, traditional materials are usually used as adsorption materials with small adsorption capacity. They perform poorly when facing thermal desorption work that requires a large number of types. The utility model proposes a new solution to the above problems. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a thermal desorption adsorption tube to solve the technical problems mentioned in the background technology.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A thermal desorption adsorption tube comprises a temperature control head, a core heating rod, and an adsorption tube body, wherein the temperature control head is bolted to one end of the core heating rod, and the adsorption tube body is installed in the core heating rod. The adsorption tube body comprises a conical connector, a connecting pipe, and an adsorption part, wherein the conical connector is threadedly connected to the other end of the core heating rod, and a limiting ring is fixed on the core heating rod, the connecting pipe is sleeved on the core heating rod, and one end of the connecting pipe is fitted with the limiting ring, and the other end of the connecting pipe is fitted on the conical connector, the connecting piece is arranged on the inner side of the adsorption part, and the adsorption part is detachably connected to the connecting part through the connecting piece, and a corrugated adsorption layer for adsorbing organic matter is arranged on the outer side of the adsorption part, wherein

[0008] The connecting member includes an end ring, a torsion spring, and a V-shaped block. The end ring is provided with two ends. Two groups of the end rings are rotatably connected to the two ends of the adsorption part respectively. The adsorption part is sleeved on the connecting pipe. A notch is provided on the end ring. A rotating shaft is fixed in the notch. The torsion spring is sleeved on the rotating shaft. The V-shaped block is rotatably connected to the rotating shaft. One end of the torsion spring is fixed on the V-shaped block, and the other end of the torsion spring is fixed in the notch. A limiting groove is provided on the connecting pipe at a position corresponding to the V-shaped block, and one end of the V-shaped block is inserted into the limiting groove.

[0009] Preferably, the end of the conical connector away from the core heating rod is detachably connected to an air guide assembly, the air guide assembly comprising a guide end shaft, an air guide blade, an adjustment ring, a spring sheet, a pull rod, and a limit block. An axial through hole is provided on the guide end shaft, a connecting groove is provided on the side wall of one end of the guide end shaft, the connecting groove is connected to the through hole, the spring sheet is symmetrically arranged in the through hole, and one side of the spring sheet is fixed in the through hole, the other end of the spring sheet is rotatably connected to the pull rod, the pull rod is slidably connected in the through hole, and the other end of the spring sheet is fixed on the limit block, an installation groove is provided on the conical connector, the guide end shaft is inserted into the installation groove, and the limit block passes through the connecting groove and is inserted into the inner wall of the installation groove, the adjustment ring is inserted into the guide end shaft, and the air guide blade is rotatably connected between the guide end shaft and the conical connector.

[0010] In any of the above schemes, it is preferred that a plurality of locking blocks are arranged at equal angles on the adjustment ring, a first locking groove is provided at the bottom of the air guide blade corresponding to the position of the locking block, and a second locking groove is provided at the position of the guide end shaft corresponding to the locking block.

[0011] In any of the above schemes, preferably, a plurality of limiting protrusions are provided on the limiting ring, and positioning grooves are provided on the connecting pipe at positions corresponding to the limiting protrusions, and the limiting protrusions are inserted into the positioning grooves.

[0012] In any of the above schemes, preferably, an annular groove is provided on the conical connector, a sealing ring is provided in the annular groove, and the top of the sealing ring is plugged into the bottom of the connecting pipe.

[0013] In any of the above solutions, preferably, two sealing rings are provided.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The design of the connecting piece and the adsorption part in the utility model utilizes the connecting piece to realize the detachable connection between the adsorption part and the connecting tube. When the adsorption part is damaged after repeated use, the connecting piece can be used to realize the rapid disassembly of the adsorption part, which facilitates the replacement of the adsorption part and reduces the use cost of the adsorption tube. In addition, through the design of the corrugated adsorption layer on the adsorption part, the contact area between the gas and the corrugated adsorption layer is increased, thereby improving the adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a thermal desorption adsorption tube of the utility model;

[0017] Figure 2 It is a partial cross-sectional connection structure diagram of the core heating rod and the connecting pipe;

[0018] Figure 3 It is a structural diagram of the connection between the conical connector and the air guide component;

[0019] Figure 4 It is a schematic diagram of the structure of the limiting ring and the connecting pipe.

[0020] Description of the numbers in the figure:

[0021] 1. Temperature control head; 2. Core heating rod; 3. Adsorption tube body; 301. Conical connector; 302. Connecting tube; 303. Adsorption part; 4. Limiting ring; 5. Connecting piece; 304. Corrugated adsorption layer; 501. End ring; 502. Torsion spring; 503. V-shaped block; 504. Notch; 505. Rotating shaft; 305. Limiting groove; 6. Air guide assembly; 601. Guide end shaft; 602. Air guide blade; 603. Adjusting ring; 604. Spring sheet; 605. Pull rod; 606. Limiting block; 607. Through hole; 608. Connecting groove; 609. Mounting groove; 610. Locking block; 611. First locking groove; 612. Second locking groove; 401. Limiting protrusion; 306. Positioning groove; 307. Annular groove; 308. Sealing ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figures 1 to 4A thermal desorption adsorption tube comprises a temperature control head 1, a core heating rod 2, and an adsorption tube body 3. The temperature control head 1 is bolted to one end of the core heating rod 2, and the adsorption tube body 3 is installed in the core heating rod 2. The adsorption tube body 3 comprises a conical connector 301, a connecting pipe 302, and an adsorption portion 303. The conical connector 301 is threadedly connected to the other end of the core heating rod 2, and a limiting ring 4 is fixed on the core heating rod 2. The connecting pipe 302 is sleeved on the core heating rod 2, and one end of the connecting pipe 302 is fitted with the limiting ring 4, and the other end of the connecting pipe 302 is fitted on the conical connector 301. The inner side of the adsorption portion 303 is provided with the connecting piece 5, and the adsorption portion 303 is detachably connected to the connecting portion 302 through the connecting piece 5. The outer side of the adsorption portion 303 is provided with a corrugated adsorption layer 304 for adsorbing organic matter, wherein

[0025] The connecting member 5 includes an end ring 501, a torsion spring 502, and a V-shaped clamping block 503. The end ring 501 is provided with two ends. Two groups of end rings 501 are rotatably connected to the two ends of the adsorption part 303 respectively. The adsorption part 303 is sleeved on the connecting tube 302. A notch 504 is provided on the end ring 501. A rotating shaft 505 is fixed in the notch 504. The torsion spring 502 is sleeved on the rotating shaft 505. The V-shaped clamping block 503 is rotatably connected to the rotating shaft 505. One end of the torsion spring 502 is fixed on the V-shaped clamping block 503, and the other end of the torsion spring 502 is fixed in the notch 504. A limiting groove 305 is provided on the connecting tube 302 at a position corresponding to the V-shaped clamping block 503, and one end of the V-shaped clamping block 503 is inserted into the limiting groove 305.

[0026] The design of the connecting piece 5 and the adsorption part 303 utilizes the connecting piece 5 to realize a detachable connection between the adsorption part 303 and the connecting tube 302. When the adsorption part 303 is damaged after repeated use, the connecting piece 5 can be used to realize quick disassembly of the adsorption part 303, so that the adsorption part 303 is easily replaced and the use cost of the adsorption tube is reduced. In addition, through the design of the corrugated adsorption layer 304 on the adsorption part 303, the contact area between the gas and the corrugated adsorption layer 304 is increased, thereby improving the adsorption effect.

[0027] In this embodiment, the end of the conical connector 301 away from the core heating rod 2 is detachably connected to the air guide component 6, and the air guide component 6 includes a guide end shaft 601, an air guide blade 602, an adjustment ring 603, a spring sheet 604, a pull rod 605, and a limit block 606. A through hole 607 is axially opened on the guide end shaft 601, and a connecting groove 608 is opened on the side wall of one end of the guide end shaft 607. The connecting groove 608 is connected to the through hole 607. The spring sheet 604 is symmetrically arranged in the through hole 607, and one side of the spring sheet 604 is fixed in the through hole 607. The other end of the spring sheet 604 is rotatably connected to the pull rod 605, and the pull rod 605 is slidably connected to the through hole 607. Inside, the other end of the spring sheet 604 is fixed on the limit block 606, and a mounting groove 609 is opened on the conical connector 301, the guide end shaft 601 is inserted into the mounting groove 609, and the limit block 606 passes through the connecting groove 608 and is inserted into the inner wall of the mounting groove 609, the adjusting ring 603 is inserted into the guide end shaft 601, and the air guide blade 602 is rotatably connected between the guide end shaft 601 and the conical connector 301; the air guide component is used to guide the processing gas, and the kinetic energy generated by the gas blowing the air guide blade 602 is used to absorb part of the kinetic energy of the gas, thereby reducing the speed and temperature of the gas flow, prolonging the contact time between the gas and the corrugated adsorption layer 304, and improving the processing effect.

[0028] In this embodiment, a plurality of locking blocks 610 are arranged at equal angles on the adjusting ring 603, a first locking groove 611 is provided at the bottom of the air guide blade 602 corresponding to the position of the locking block 610, and a second locking groove 612 is provided at the position of the guide end shaft 601 corresponding to the locking block 610; when the air guide blade 602 needs to be locked in position without being rotated, the locking block 610 is pointed in the direction of the air guide blade 602, and the air guide blade 602 is locked by using the locking block 610 and the first locking groove 611; and when the air guide blade 602 needs to be rotated, the locking block 610 is inserted into the second locking groove 612.

[0029] In this embodiment, a plurality of limiting protrusions 401 are provided on the limiting ring 4, and a positioning groove 306 is provided on the connecting tube 302 at a position corresponding to the limiting protrusion 401, and the limiting protrusion 401 is inserted into the positioning groove 306; the limiting protrusion 401 is used to position and install the connecting tube 302 to prevent the connecting tube 302 from rotating uncontrolled.

[0030] In this embodiment, an annular groove 307 is provided on the conical connector 301, and a sealing ring 308 is provided in the annular groove 307, and the top of the sealing ring 308 is inserted into the bottom of the connecting tube 302; the sealing ring 308 is utilized to increase the sealing performance between the conical connector 301 and the connecting tube 302 to prevent gas from entering the gap between the connecting tube 302 and the core heating rod 2.

[0031] In this embodiment, the sealing ring 308 is provided with two layers to increase the sealing performance of the sealing ring 308 .

[0032] The working process of the utility model is as follows:

[0033] The adsorption part 303 and the connecting tube 302 are detachably connected by the connecting piece 5. When the adsorption part 303 is damaged after repeated use, the adsorption part 303 can be quickly disassembled by the connecting piece 5, which facilitates the replacement of the adsorption part 303 and reduces the use cost of the adsorption tube. In addition, the design of the corrugated adsorption layer 304 on the adsorption part 303 increases the contact area between the gas and the corrugated adsorption layer 304, thereby improving the adsorption effect.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A thermal desorption adsorption tube, comprising a temperature control head (1), a core heating rod (2), and an adsorption tube body (3), wherein the temperature control head (1) is bolted to one end of the core heating rod (2), and the adsorption tube body (3) is installed in the core heating rod (2), characterized in that: The adsorption tube body (3) comprises a conical connector (301), a connecting tube (302), and an adsorption portion (303); the conical connector (301) is threadedly connected to the other end of the core heating rod (2), and a limiting ring (4) is fixed on the core heating rod (2); the connecting tube (302) is sleeved on the core heating rod (2), and one end of the connecting tube (302) is in contact with the limiting ring (4), and the other end of the connecting tube (302) is in contact with the conical connector (301); a connecting piece (5) is provided on the inner side of the adsorption portion (303); the adsorption portion (303) is detachably connected to the connecting tube (302) via the connecting piece (5); a corrugated adsorption layer (304) for adsorbing organic matter is provided on the outer side of the adsorption portion (303), wherein The connecting member (5) comprises an end ring (501), a torsion spring (502), and a V-shaped clamping block (503). The end ring (501) is provided with two ends. Two groups of the end rings (501) are rotatably connected to the two ends of the adsorption part (303), respectively. The adsorption part (303) is sleeved on the connecting pipe (302). A notch (504) is provided on the end ring (501). A rotating shaft (505) is fixed in the notch (504). The torsion spring (502) is provided with a rotating shaft (505). The connecting tube (302) is sleeved on the rotating shaft (505), the V-shaped clamping block (503) is rotatably connected to the rotating shaft (505), one end of the torsion spring (502) is fixed on the V-shaped clamping block (503), the other end of the torsion spring (502) is fixed in the notch (504), a limiting groove (305) is provided on the connecting tube (302) at a position corresponding to the V-shaped clamping block (503), and one end of the V-shaped clamping block (503) is inserted into the limiting groove (305).

2. A thermal desorption adsorption tube according to claim 1, characterized in that: The end of the conical connector (301) away from the core heating rod (2) is detachably connected to an air guide assembly (6), the air guide assembly (6) comprising a guide end shaft (601), an air guide blade (602), an adjustment ring (603), a spring sheet (604), a pull rod (605), and a limit block (606). The guide end shaft (601) is axially provided with a through hole (607), and a connecting groove (608) is provided on a side wall of one end of the guide end shaft (601). The connecting groove (608) is connected to the through hole (607). The spring sheet (604) is symmetrically arranged in the through hole (607), and one side of the spring sheet (604) is fixed to the through hole (607). 7), the other end of the spring sheet (604) is rotatably connected to the pull rod (605), the pull rod (605) is slidably connected in the through hole (607), the other end of the spring sheet (604) is fixed on the limit block (606), the conical connector (301) is provided with a mounting groove (609), the guide end shaft (601) is inserted into the mounting groove (609), and the limit block (606) passes through the connecting groove (608) and is inserted into the inner wall of the mounting groove (609), the adjusting ring (603) is inserted into the guide end shaft (601), and the air guide blade (602) is rotatably connected between the guide end shaft (601) and the conical connector (301).

3. A thermal desorption adsorption tube according to claim 2, characterized in that: A plurality of locking blocks (610) are arranged at equal angles on the adjusting ring (603), a first locking groove (611) is provided at the bottom of the air guide blade (602) at a position corresponding to the locking block (610), and a second locking groove (612) is provided at a position corresponding to the locking block (610) on the guide end shaft (601).

4. A thermal desorption adsorption tube according to claim 3, characterized in that: The limiting ring (4) is provided with a plurality of limiting protrusions (401), and the connecting pipe (302) is provided with positioning grooves (306) at positions corresponding to the limiting protrusions (401), and the limiting protrusions (401) are inserted into the positioning grooves (306).

5. The thermal desorption adsorption tube according to claim 1, characterized in that: The conical connector (301) is provided with an annular groove (307), a sealing ring (308) is provided in the annular groove (307), and the top of the sealing ring (308) is plugged into the bottom of the connecting pipe (302).

6. The thermal desorption adsorption tube according to claim 5, characterized in that: The sealing ring (308) is provided with two layers.

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