Full-automatic thermal desorption instrument
By using reset springs and anti-slip rubber pads to fix the desuspense tube in a fully automatic thermal desorption instrument, the problem of desuspense tube shaking when the rotating disc is rotated is solved, the stability of the equipment and the safety of the sampling needle are ensured, and convenient desuspense tube is realized Disassemble and assemble.
Patent Information
- Application Number
- CN202420045233.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The rotating disc of the existing fully automatic thermal desorption instrument is prone to shake when rotating and inserting the sample needle, resulting in poor stability and easy damage to the sample needle.
The connecting plate is elastically clamped with a return spring to fix the desorbent pipe through an anti-slip rubber pad to ensure that the desorbent pipe does not shake when the rotating disc rotates, and drives the rotating disc to rotate through a motor to batch thermal desorption.
Effectively prevent the shaking of the straw in the rotating plate, avoid damage to the sampling needle, and simplify the disassembly and assembly process of the straw.
Smart Images
Figure CN222461154U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal desorption instruments, in particular to a full-automatic thermal desorption instrument. Background Art
[0002] The fully automatic thermal desorption instrument is an important analytical instrument that can quickly and accurately detect volatile organic compounds in samples. It is widely used in environmental monitoring, food safety, drug quality control and other fields.
[0003] The fully automatic thermal desorption instrument can perform pretreatment on analytical samples, and includes a desorption tube, a rotating disk, a desorption furnace, and an upper sampling needle and a lower sampling needle connected to a gas path system. When in use, firstly load the sample to be analyzed into the desorption tube and cover it with a sealing cover; then, put the desorption tube loaded with the sample to be analyzed into the rotating disk, and under the action of the rotating disk, send the desorption tube to the desorption furnace, and under the action of the driving device, the upper sampling needle and the lower sampling needle are respectively inserted into the desorption tube from the upper and lower sides, and under the action of the desorption furnace and the gas path system, the purpose of thermal desorption is achieved.
[0004] However, the rotating disk of the existing fully automatic thermal desorption instrument usually adopts a plug-in method to position the desorption tube. When the rotating disk rotates and the sampling needle is inserted, the desorption tube is easy to shake in the rotating disk, and the stability is poor. In addition, during the process of inserting the sampling needle into the desorption tube, the sampling needle is easily damaged due to the shaking of the desorption tube. Utility Model Content
[0005] In view of the shortcomings of the prior art, the utility model provides a fully automatic thermal desorption instrument, and the specific technical scheme is as follows:
[0006] A fully automatic thermal desorption instrument comprises an instrument body and a rotating disk rotatably arranged in the instrument body, a plurality of evenly distributed desorption tubes are inserted in the rotating disk, a driving mechanism for driving the rotating disk to rotate is arranged in the instrument body, a plurality of evenly distributed fixed collars are fixed in the rotating disk, two groups of symmetrically distributed reset springs are fixed in the fixed collars, two symmetrically distributed anti-skid rubber pads are arranged between one ends of the two groups of reset springs, the desorption tube is fitted and abutted between two adjacent anti-skid rubber pads, a connecting rope is arranged on the side of the anti-skid rubber pad away from the desorption tube, and a cross bar fitted and abutted against the top of the rotating disk is fixed between the top ends of the two adjacent connecting ropes.
[0007] By adopting the above technical solution, the connection plate can be clamped and fixed to the desorption tube in the rotating disk through two adjacent anti-skid rubber pads through the elastic force of the reset spring on the connection plate.
[0008] Optionally, a working groove is provided on the top of the instrument body, and the rotating disk is rotatably connected to the working groove of the instrument body. The rotating disk includes a lower disk body, a column and an upper disk body. The column is fixed between the lower disk body and the upper disk body, and a plurality of fixed rings are evenly fixed on the bottom of the upper disk body. A plurality of evenly distributed plug interfaces are provided in the upper disk body, and the desorption tube is cooperatively plugged into the plug interface of the upper disk body, and the bottom end of the desorption tube passes through the lower disk body.
[0009] By adopting the above technical solution, the upper plate body can position the desorption tube through the insertion interface, the lower plate body can position the through end of the desorption tube, and the upper plate body can support the top end of the desorption tube.
[0010] Optionally, the driving mechanism includes a motor fixedly arranged at the bottom of the working tank, and the output end of the motor is fixedly connected to the center of the bottom of the lower disk body.
[0011] By adopting the above technical solution, the rotating disk can be driven by the motor drive, so that the rotating disk can move multiple desorption tubes one by one to the thermal desorption area of the instrument body.
[0012] Optionally, two symmetrically distributed connecting plates are fixed between one ends of the two groups of return springs, and the anti-slip rubber pad and the bottom end of the connecting rope are respectively fixed on both sides of the connecting plates.
[0013] By adopting the above technical solution, the connecting plate can connect the return spring and the anti-slip rubber pad.
[0014] Optionally, a pull ring is fixedly provided at the center of the top of the cross bar, and a limiting rod is fixedly provided on the side of the connecting plate away from the desorption tube, and one end of the limiting rod passes through and extends to the outside of the fixed collar.
[0015] By adopting the above technical solution, the limiting rod can connect the connecting plate and the fixing ring, and limit the connecting plate, so that the connecting plate and other components can only move horizontally.
[0016] In summary, the present invention has at least one of the following beneficial effects:
[0017] 1. Through the elastic force of the reset spring on the connecting plate, the connecting plate can clamp and fix the desorption tube in the rotating disk through two adjacent non-slip rubber pads, so that the desorption tube is not easy to shake when the rotating disk rotates and the sampling needle is inserted, preventing the inserted sampling needle from being damaged due to the instability of the desorption tube. After people pull up the pull ring, the desorption tube can be disengaged from the clamp, which is convenient for people to quickly disassemble and assemble the desorption tube in the fully automatic thermal desorption instrument.
[0018] 2. The motor can drive the rotating disk to rotate, so that the rotating disk can move multiple desorption tubes one by one to the thermal desorption area of the instrument body to perform batch thermal desorption of the desorption tubes. The non-slip rubber pad has a certain elasticity, so that the desorption tubes are not easily damaged by clamping. The limit rod can limit the connecting plate so that the connecting plate and other components can only move horizontally to prevent the reset spring from tilting. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a top view of the overall structure of the utility model;
[0020] Figure 2 It is a front cross-sectional view of a local structure of the utility model;
[0021] Figure 3 The utility model Figure 2 A magnified view of the structure in the middle;
[0022] Figure 4 This is a front view connection diagram of a connecting rope, a crossbar and a pull ring of the utility model.
[0023] Explanation of the reference numerals: 1. instrument body; 11. working tank; 12. motor; 2. rotating disk; 21. lower disk body; 22. column; 23. upper disk body; 24. plug interface; 3. desorption tube; 4. fixing ring; 41. reset spring; 42. connecting plate; 43. anti-slip rubber pad; 44. connecting rope; 45. cross bar; 46. pull ring; 47. limit rod. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-4 The utility model is described in further detail.
[0025] The utility model embodiment discloses a fully automatic thermal desorption instrument, referring to Figure 1-2 , including an instrument body 1 and a rotating disk 2 rotatably arranged in the instrument body 1. The instrument body 1 and the rotating disk 2 constitute an existing fully automatic desorption instrument, whose internal structure and principle have been disclosed and will not be repeated here. A working groove 11 is opened on the top of the instrument body 1, and the rotating disk 2 is rotatably connected in the working groove 11 of the instrument body 1. The instrument body 1 can limit and hide the rotating disk 2 through the working groove 11.
[0026] Reference Figure 2 The rotating disk 2 includes a lower disk body 21, a column 22 and an upper disk body 23. The column 22 is fixedly arranged between the lower disk body 21 and the upper disk body 23, and the column 22 can connect the lower disk body 21 and the upper disk body 23.
[0027] Reference Figure 2A driving mechanism for driving the rotating disk 2 to rotate is provided in the instrument body 1, and the driving mechanism includes a motor 12 fixedly arranged at the bottom of the working groove 11, and the output end of the motor 12 is fixedly connected to the bottom center of the lower disk body 21. After the motor 12 is running, it will drive the lower disk body 21 and the rotating disk 2 to rotate as a whole.
[0028] Reference Figure 1-3 A plurality of evenly distributed desorption tubes 3 are inserted in the rotating disk 2, and a plurality of evenly distributed plug ports 24 are opened in the upper disk body 23. The desorption tube 3 is inserted in the plug port 24 of the upper disk body 23. The bottom end of the desorption tube 3 passes through the lower disk body 21. The upper disk body 23 can position the desorption tube 3 through the plug port 24, the lower disk body 21 can position the penetrating end of the desorption tube 3, and the upper disk body 23 can support the top end of the desorption tube 3.
[0029] Reference Figure 2-3 A plurality of evenly distributed fixing rings 4 are fixed in the rotating disk 2. The plurality of fixing rings 4 are evenly fixed at the bottom of the upper disk body 23. The fixing rings 4 are located directly below the plug-in port 24. The upper disk body 23 can support and fix the fixing rings 4.
[0030] Reference Figure 2-3 Two symmetrically distributed groups of return springs 41 are fixed in the fixed ring 4, and two symmetrically distributed anti-skid rubber pads 43 are provided between one ends of the two groups of return springs 41. The desorption tube 3 is fitted and abutted between two adjacent anti-skid rubber pads 43. Under the elastic force of the return spring 41, the anti-skid rubber pad 43 will be pressed toward the desorption tube 3, so that the two adjacent anti-skid rubber pads 43 can clamp and fix the desorption tube 3.
[0031] Reference Figure 2-3 A connecting rope 44 is provided on the side of the anti-skid rubber pad 43 away from the desorption tube 3, and two symmetrically distributed connecting plates 42 are fixed between one end of the two sets of reset springs 41. The bottom ends of the anti-skid rubber pad 43 and the connecting rope 44 are respectively fixed on both sides of the connecting plate 42, and the connecting plate 42 can hard connect the reset spring 41 and the anti-skid rubber pad 43.
[0032] Reference Figure 2-4 A cross bar 45 is fixedly provided between the top ends of two adjacent connecting ropes 44 and is in contact with the top of the rotating disk 2, so that people can pull up the cross bar 45 and cooperate with the connection of the connecting ropes 44 to pull the connecting plate 42 and the anti-slip rubber pad 43 away from the desorption tube 3, thereby detaching the desorption tube 3 from the clamp.
[0033] Reference Figure 2-4 A pull ring 46 is fixedly provided at the center of the top of the cross bar 45, and people can pull up or lower the cross bar 45 through the pull ring 46.
[0034] Reference Figure 2-3A limiting rod 47 is fixedly provided on the side of the connecting plate 42 away from the desorption tube 3, and one end of the limiting rod 47 passes through and extends to the outside of the fixing ring 4. The limiting rod 47 can connect the connecting plate 42 and the fixing ring 4 and limit the connecting plate 42 so that the connecting plate 42 and other components can only move laterally to prevent the return spring 41 from being skewed due to the lack of limiting the connecting plate 42 and other components when the anti-slip rubber pad 43 is pulled away from the desorption tube 3. After the return spring 41 has been skewed for a long time, the connection node between the return spring 41 and the fixing ring 4 is prone to breakage.
[0035] The implementation principle of a fully automatic thermal desorption instrument of the utility model embodiment is:
[0036] When people need to install the desorption tube 3 into the rotating disk 2, they can pull up the pull ring 46. At this time, the pull ring 46 will pull up the connecting rope 44 through the cross bar 45, and pull the connecting plate 42 and the anti-slip rubber pad 43 toward the inner wall of the fixed ring 4. Then the desorption tube 3 can be inserted into the plug port 24 of the rotating disk 2.
[0037] At this time, release the pull ring 46, and under the elastic force of the return spring 41, the connecting plate 42 and the anti-skid rubber pad 43 will be pressed toward the desorption tube 3, so that the two adjacent anti-skid rubber pads 43 can clamp and fix the desorption tube 3, so that the desorption tube 3 is not easy to shake when the rotating disk 2 rotates and the sampling needle is inserted, thereby preventing the inserted sampling needle from being damaged due to the instability of the desorption tube 3, and after people pull up the pull ring 46 again, the desorption tube 3 can be disengaged from the clamp to take out the desorption tube 3.
[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A fully automatic thermal desorption instrument, comprising an instrument body (1) and a rotating disk (2) rotatably arranged in the instrument body (1), wherein a plurality of evenly distributed desorption tubes (3) are inserted and matched in the rotating disk (2), characterized in that: The instrument body (1) is provided with a driving mechanism for driving the rotating disk (2) to rotate. The rotating disk (2) is fixed with a plurality of evenly distributed fixing rings (4). Two symmetrically distributed groups of return springs (41) are fixed with the fixing rings (4). Two symmetrically distributed anti-skid rubber pads (43) are provided between one end of the two groups of return springs (41). The desorption tube (3) is fitted and abutted between two adjacent anti-skid rubber pads (43). A connecting rope (44) is provided on a side of the anti-skid rubber pad (43) away from the desorption tube (3). A cross bar (45) fitted and abutted against the top of the rotating disk (2) is fixed between the top ends of the two adjacent connecting ropes (44).
2. A fully automatic thermal desorption instrument according to claim 1, characterized in that: A working groove (11) is provided on the top of the instrument body (1), and the rotating disk (2) is rotatably connected in the working groove (11) of the instrument body (1).
3. A fully automatic thermal desorption instrument according to claim 1, characterized in that: The rotating disk (2) comprises a lower disk body (21), a column (22) and an upper disk body (23); the column (22) is fixedly arranged between the lower disk body (21) and the upper disk body (23); and a plurality of fixing rings (4) are evenly fixedly arranged at the bottom of the upper disk body (23).
4. A fully automatic thermal desorption instrument according to claim 3, characterized in that: The upper disk body (23) is provided with a plurality of evenly distributed plugging ports (24), the desorption tube (3) is plugged into the plugging port (24) of the upper disk body (23), and the bottom end of the desorption tube (3) passes through the lower disk body (21).
5. A fully automatic thermal desorption instrument according to claim 2, characterized in that: The driving mechanism comprises a motor (12) fixedly arranged at the bottom of the working groove (11), and an output end of the motor (12) is fixedly connected to the center of the bottom of the lower plate (21).
6. A fully automatic thermal desorption instrument according to claim 1, characterized in that: Two symmetrically distributed connecting plates (42) are fixedly disposed between one end of the two groups of return springs (41), and the bottom ends of the anti-slip rubber pads (43) and the connecting ropes (44) are respectively fixedly disposed on both sides of the connecting plates (42).
7. A fully automatic thermal desorption instrument according to claim 1, characterized in that: A pull ring (46) is fixedly provided at the center of the top of the cross bar (45).
8. A fully automatic thermal desorption instrument according to claim 6, characterized in that: A limiting rod (47) is fixedly provided on one side of the connecting plate (42) away from the desorption tube (3), and one end of the limiting rod (47) penetrates through and extends to the outside of the fixing collar (4).