Thermal desorption pipe clamping device convenient to disassemble and assemble

Abstract

The utility model discloses a thermal desorption tube clamping device convenient to disassemble and assemble, which relates to the technical field of thermal desorption instruments and comprises a thermal desorption instrument, a connecting sleeve is arranged at the top of a sample feeding mechanism, and a clamping mechanism for clamping and fixing thermal desorption tube bodies with different lengths is arranged on the surface of the connecting sleeve. Through the clamping mechanism, the thermal desorption pipe body is inserted into the connecting groove through the fixing sleeve, at the moment, the surface of the fixing sleeve can extrude the clamping pin and the spring, according to different lengths of the thermal desorption pipe body, when the position of the fixing sleeve is proper, the springs at different positions are reset to push the clamping pin to enter the clamping groove, and the clamping pin clamps the fixing sleeve; and when an upper clamping pin clamps the fixing sleeve, the electric push rod is started, one end of the electric push rod moves to the bottom of the fixing sleeve, then the fixing sleeve cannot move downwards at will, and the effect that the thermal desorption pipes with different lengths can be clamped and fixed is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal desorption instruments, specifically a thermal desorption tube clamping device that is easy to assemble and disassemble. Background Technology

[0002] A thermal desorption instrument is an analytical instrument used in environmental science and resource science and technology fields. It is an essential pretreatment device in VOCs analysis laboratories. Its function is to heat and purge the VOCs adsorbed in the adsorption tube, enrich them in a cold trap, and then send them into a gas chromatograph. Thermal desorption tubes come in different lengths depending on the standard, including 89mm and 150mm. However, thermal desorption instruments generally require a clamping device on the sample injection equipment to clamp and move the thermal desorption tube to a position below the detector of the thermal desorption instrument for experimental analysis. However, existing clamping devices usually can only clamp and move thermal desorption tubes of one length. When clamping thermal desorption tubes of other lengths, the clamping position needs to be adjusted, which is not very flexible and makes it difficult to distinguish the clamping and injection according to the length of the thermal desorption tube.

[0003] Based on this, a heat desorption tube clamping device that is easy to install and remove is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide a heat desorption tube clamping device that is easy to assemble and disassemble, so as to solve the problem that the clamping device in the background art requires adjustment of the clamping part and has poor flexibility when clamping heat desorption tubes of other sizes.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thermal desorption tube clamping device that is easy to assemble and disassemble includes a thermal desorption instrument. The surface of the thermal desorption instrument has a groove. The top of the groove is provided with a sample feeding mechanism for feeding and testing the thermal desorption tube body. The top of the sample feeding mechanism is provided with a connecting sleeve. The surface of the connecting sleeve is provided with a clamping mechanism for clamping and fixing thermal desorption tube bodies of different lengths.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0008] In one alternative embodiment: the sample injection mechanism includes a chute, a fixed block, a drive motor, a first gear, a second gear, a connecting rod, and an annular connecting sleeve. The inner wall of the chute has a chute, a fixed block is fixedly connected to one side of the top of the chute, a drive motor is fixedly connected inside the fixed block, a first gear is fixedly connected to one end of the drive motor, a second gear is meshed with the surface of the first gear, a connecting rod is fixedly connected to the top of the second gear, a connecting sleeve is fixedly connected to the top of the connecting rod, an annular connecting sleeve is slidably connected to the inner wall of the chute, and a connecting sleeve is fixedly connected to the top of the annular connecting sleeve.

[0009] In one alternative: the inner wall dimensions of the groove match the outer wall dimensions of the annular connecting sleeve.

[0010] In one alternative: the outer surface of the annular connecting sleeve is rotatably connected to multiple sets of balls.

[0011] In one alternative embodiment: the clamping mechanism includes a connecting groove, a spring groove, a spring, a locking pin, a fixing groove, an electric push rod, a fixing sleeve, a locking groove, a thermal desorption tube body, and a detection head. The surface of the connecting sleeve has multiple sets of connecting grooves. One side of the inner wall of the connecting groove has two sets of spring grooves. The inner wall of the spring groove is provided with a spring. One end of the spring is fixedly connected to the spring groove, and the other end is fixedly connected to a locking pin. The locking pin is slidably disposed in the spring groove. A fixing groove is provided on one side of the bottom of the connecting groove. An electric push rod is fixedly connected to the inner wall of the fixing groove. A fixing sleeve is slidably connected to the inner wall of the connecting groove. A locking groove is provided on one side of the fixing sleeve. One end of the locking pin engages with the locking groove. The top of the fixing sleeve is fixedly connected to the thermal desorption tube body, and a detection head is sleeved on the top of the thermal desorption tube body.

[0012] In one alternative, the diameter of the spring groove matches the diameter of the spring.

[0013] In one alternative: a control screen is provided on one side of the surface of the thermal desorption instrument.

[0014] In one alternative: a detector is provided at the top front end of the thermal desorption instrument.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention uses a clamping mechanism to insert the thermal desorption tube body into the connecting groove through a fixing sleeve. At this time, the surface of the fixing sleeve will compress the locking pin and the spring. Depending on the length of the thermal desorption tube body, when the fixing sleeve is in the correct position, the springs at different positions will reset and push the locking pin into the groove, so that the locking pin clamps the fixing sleeve, thereby fixing the fixing sleeve to the connecting sleeve. When the upper locking pin clamps the fixing sleeve, the electric push rod is activated, so that one end of the electric push rod moves to the bottom of the fixing sleeve, thereby preventing the fixing sleeve from moving downwards at will. This achieves the effect of clamping and fixing thermal desorption tubes of different lengths. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the sample introduction mechanism of this utility model.

[0019] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model.

[0020] Figure 4 This is a schematic diagram of the connection groove and the fixing sleeve of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the electric push rod and the fixed sleeve of this utility model.

[0022] Figure 6 For the present utility model Figure 3 An enlarged diagram of A in the diagram.

[0023] Figure reference numerals: 1. Thermal desorption instrument; 2. Control panel; 3. Detector; 4. Groove; 5. Sample injection mechanism; 501. Slide groove; 502. Fixing block; 503. Drive motor; 504. First gear; 505. Second gear; 506. Connecting rod; 507. Annular connecting sleeve; 6. Ball bearing; 7. Connecting sleeve; 8. Clamping mechanism; 801. Connecting groove; 802. Spring groove; 803. Spring; 804. Locking pin; 805. Fixing groove; 806. Electric push rod; 807. Fixing sleeve; 808. Locking groove; 809. Thermal desorption tube body; 810. Detection head. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] In one embodiment, such as Figures 1-6As shown, a thermal desorption tube clamping device that is easy to assemble and disassemble includes a thermal desorption instrument 1. The surface of the thermal desorption instrument 1 is provided with a groove 4. The top of the groove 4 is provided with a sample feeding mechanism 5 for feeding the thermal desorption tube body 809 to the detector 3 for detection. The sample feeding mechanism 5 is provided with a connecting sleeve 7 on its top. The surface of the connecting sleeve 7 is provided with a clamping mechanism 8 for clamping and fixing thermal desorption tube bodies 809 of different lengths.

[0027] In one embodiment, such as Figure 2 As shown, the sample injection mechanism 5 includes a slide groove 501, a fixing block 502, a drive motor 503, a first gear 504, a second gear 505, a connecting rod 506, and an annular connecting sleeve 507. The inner wall of the groove 4 has a slide groove 501. A fixing block 502 is fixedly connected to one side of the top of the groove 4. A drive motor 503 is fixedly connected inside the fixing block 502. One end of the drive motor 503 is fixedly connected to the first gear 504. The surface of the first gear 504 is meshed with the second gear 505. The top of the second gear 505 is fixedly connected to the connecting rod 507. 06. A connecting sleeve 7 is fixedly connected to the top of the connecting rod 506. An annular connecting sleeve 507 is slidably connected to the inner wall of the slide groove 501. A connecting sleeve 7 is fixedly connected to the top of the annular connecting sleeve 507. Starting the drive motor 503 can drive the first gear 504 to rotate. The surface of the first gear 504 is meshed with the second gear 505. When the first gear 504 rotates, it can drive the second gear 505 to rotate. The second gear 505 can drive the connecting sleeve 7 to rotate through the connecting rod 506, so that the connecting sleeve 7 slides in the slide groove 501 through the annular connecting sleeve 507.

[0028] In one embodiment, such as Figure 2 As shown, the inner wall size of the slide groove 501 matches the outer wall size of the annular connecting sleeve 507. When the annular connecting sleeve 507 slides inside the slide groove 501, the slide groove 501 can limit the sliding of the annular connecting sleeve 507 and prevent the annular connecting sleeve 507 from shaking inside the slide groove 501.

[0029] In one embodiment, such as Figure 2 As shown, the outer surface of the annular connecting sleeve 507 is rotatably connected with multiple sets of balls 6, which can reduce the friction between the annular connecting sleeve 507 and the slide groove 501, so that the connecting sleeve 7 can rotate better in the slide groove 501 through the annular connecting sleeve 507.

[0030] In one embodiment, such as Figures 3-6As shown, the clamping mechanism 8 includes a connecting groove 801, a spring groove 802, a spring 803, a locking pin 804, a fixing groove 805, an electric push rod 806, a fixing sleeve 807, a locking groove 808, a thermal desorption tube body 809, and a detection head 810. The surface of the connecting sleeve 807 has multiple sets of connecting grooves 801. Two sets of spring grooves 802 are formed on one side of the inner wall of the connecting groove 801. A spring 803 is provided on the inner wall of the spring groove 802. One end of the spring 803 is fixedly connected to the spring groove 802, and the other end is fixedly connected to the locking pin 804. The locking pin 804 is slidably disposed in the spring groove 802. A fixing groove 805 is formed on one side of the bottom of the connecting groove 801. An electric push rod 806 is fixedly connected to the inner wall of the fixing groove 805. A fixing sleeve 807 is slidably connected to the inner wall of the connecting groove 801. A locking groove 808 is formed on one side of the fixing sleeve 807. One end of the locking pin 804 engages with the slot 808. The top of the fixed sleeve 807 is fixedly connected to the thermal desorption tube body 809. A detection head 810 is sleeved on the top of the thermal desorption tube body 809. The thermal desorption tube body 809 is inserted into the connecting groove 801 through the fixed sleeve 807. At this time, the surface of the fixed sleeve 807 will press the locking pin 804 and the spring 803. Depending on the length of the thermal desorption tube body 809, when the fixed sleeve 807 is in the correct position, the springs 803 at different positions will reset and push the locking pin 804 into the slot 808, so that the locking pin 804 clamps the fixed sleeve 807, thereby fixing the fixed sleeve 807 on the connecting sleeve 7. When the upper locking pin 804 clamps the fixed sleeve 807, the electric push rod 806 is activated, so that one end of the electric push rod 806 moves to the bottom of the fixed sleeve 807, thereby preventing the fixed sleeve 807 from moving downward at will.

[0031] In one embodiment, such as Figure 6 As shown, the diameter of the spring groove 802 matches the diameter of the spring 803. When the spring 803 extends or retracts, the spring groove 802 limits the spring 803 to prevent it from wobbling.

[0032] Example 2

[0033] In one embodiment, such as Figure 1 As shown, a control screen 2 is provided on one side of the surface of the thermal desorption instrument 1 for controlling the thermal desorption instrument 1.

[0034] In one embodiment, such as Figure 1 As shown, the thermal desorption instrument 1 is equipped with a detector 3 at the top front end, which is used to detect the thermal desorption tube body 809.

[0035] Working Principle: The above embodiment discloses a heat desorption tube clamping device that is easy to assemble and disassemble. In use, the heat desorption tube body 809 is inserted into the connecting groove 801 through the fixing sleeve 807. At this time, the surface of the fixing sleeve 807 will press against the locking pin 804 and the spring 803. Depending on the length of the heat desorption tube body 809, when the fixing sleeve 807 is in the correct position, the springs 803 at different positions reset and push the locking pin 804 into the groove 808, causing the locking pin 804 to clamp the fixing sleeve 807, thus fixing the fixing sleeve 807 onto the connecting sleeve 7. When the upper locking pin 804 clamps the fixing sleeve 807, the electric push rod 806 is activated, causing one end of the electric push rod 806 to move to the bottom of the fixing sleeve 807, thereby preventing the fixing sleeve 807 from moving downwards arbitrarily. The device can clamp and fix thermal desorption tubes of different lengths. Starting the drive motor 503 can drive the first gear 504 to rotate. The surface of the first gear 504 is meshed with the second gear 505. When the first gear 504 rotates, it can drive the second gear 505 to rotate. The second gear 505 can drive the connecting sleeve 7 to rotate through the connecting rod 506, so that the thermal desorption tube body 809 can be moved below the detector 3, so that the detector 3 can detect the thermal desorption tube body 809 through the detection head 810. After the thermal desorption tube body 809 is used, pull the thermal desorption tube body 809 to make the fixing sleeve 807 fall off the locking pin 804, so that the thermal desorption tube body 809 can be pulled out from the connecting groove 801, thus making the thermal desorption tube body 809 easy to disassemble and assemble.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat desorption tube clamping device that is easy to assemble and disassemble, comprising a heat desorption instrument (1), wherein the surface of the heat desorption instrument (1) is provided with a groove (4), characterized in that: The top of the groove (4) is provided with a sample feeding mechanism (5) for feeding and testing the thermal desorption tube body (809). The top of the sample feeding mechanism (5) is provided with a connecting sleeve (7). The surface of the connecting sleeve (7) is provided with a clamping mechanism (8) for clamping and fixing thermal desorption tube bodies (809) of different lengths. The clamping mechanism (8) includes a connecting groove (801), a spring groove (802), a spring (803), a locking pin (804), a fixing groove (805), an electric push rod (806), a fixing sleeve (807), a locking groove (808), a thermal desorption tube body (809), and a detection head (810). The surface of the connecting sleeve (7) has multiple sets of connecting grooves (801). Two sets of spring grooves (802) are provided on one side of the inner wall of each connecting groove (801). A spring (803) is provided on the inner wall of each spring groove (802). One end of each spring (803) is fixedly connected to the spring groove (802), and the other end is fixedly connected to the locking pin (805). 04), the locking pin (804) is slidably disposed in the spring groove (802), a fixing groove (805) is provided on one side of the bottom of the connecting groove (801), an electric push rod (806) is fixedly connected to the inner wall of the fixing groove (805), a fixing sleeve (807) is slidably connected to the inner wall of the connecting groove (801), a locking groove (808) is provided on one side of the fixing sleeve (807), one end of the locking pin (804) cooperates with the locking groove (808), a thermal desorption tube body (809) is fixedly connected to the top of the fixing sleeve (807), and a detection head (810) is sleeved on the top of the thermal desorption tube body (809).

2. The easily detachable heat-desorption tube clamping device according to claim 1, characterized in that: The sample injection mechanism (5) includes a chute (501), a fixing block (502), a drive motor (503), a first gear (504), a second gear (505), a connecting rod (506), and an annular connecting sleeve (507). The inner wall of the groove (4) is provided with a chute (501). The fixing block (502) is fixedly connected to one side of the top of the groove (4). The drive motor (503) is fixedly connected inside the fixing block (502). The first gear (504) is fixedly connected to one end of the drive motor (503). The second gear (505) is meshed with the surface of the first gear (504). The connecting rod (506) is fixedly connected to the top of the second gear (505). The connecting sleeve (7) is fixedly connected to the top of the connecting rod (506). The annular connecting sleeve (507) is slidably connected to the inner wall of the chute (501). The connecting sleeve (7) is fixedly connected to the top of the annular connecting sleeve (507).

3. The easily detachable heat-desorption tube clamping device according to claim 2, characterized in that: The inner wall dimensions of the groove (501) match the outer wall dimensions of the annular connecting sleeve (507).

4. The easily detachable heat-desorption tube clamping device according to claim 2, characterized in that: The outer surface of the annular connecting sleeve (507) is rotatably connected to multiple sets of balls (6).

5. The easily detachable heat-desorption tube clamping device according to claim 1, characterized in that: The diameter of the spring groove (802) matches the diameter of the spring (803).

6. The easily detachable heat-desorption tube clamping device according to claim 1, characterized in that: The thermal desorption instrument (1) has a control panel (2) on one side of its surface.

7. The easily detachable heat-desorption tube clamping device according to claim 1, characterized in that: The thermal desorption instrument (1) is equipped with a detector (3) at the top front end.

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