Temperature measuring tool for liquid chromatographic column incubator

Abstract

The utility model belongs to the technical field of column oven temperature measurement, and particularly relates to a liquid chromatographic column oven temperature measuring tool. Comprising a fixing frame arranged in the column oven, a temperature measuring fixing piece is arranged in the fixing frame in a penetrating mode, at least one end of the temperature measuring fixing piece extends out of the fixing frame, and a temperature measuring meter is arranged at the end, extending out of the fixing frame, of the temperature measuring fixing piece; a transmission disc and a transmission motor are arranged on one side of the temperature measurement fixing piece, and the transmission motor drives the transmission disc to rotate; a first non-slip mat is arranged on one side of the temperature measuring fixing piece, and a second non-slip mat is arranged on the outer wall of the transmission disc; the first anti-skid pad and the second anti-skid pad roll in an attached mode. According to the utility model, multidirectional position adjustment of the temperature measuring meter can be realized, and comprehensive detection of the internal temperature of the column oven can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of column temperature box temperature measurement, and in particular relates to a liquid chromatography column temperature box temperature measurement tool. Background Art

[0002] Liquid chromatography separation technology is a technology used to separate mixtures and confirm and quantify the proportions of each component. The core component of liquid chromatography separation technology is the liquid chromatography column. The separation principle is: the mixed component sample is dissolved in a mobile phase, and the mobile phase passes through the stationary phase adsorbent in the chromatographic column at a certain flow rate under high pressure conditions. Since the stationary phase adsorbent has different adsorption forces on different components, different components flow through the stationary phase adsorbent at different flow rates, and the time when different components flow out of the chromatographic column and the content of each component are detected in the detector of the liquid chromatograph, thereby achieving the purpose of separation and detection.

[0003] Liquid chromatography separation technology needs to be carried out in a constant temperature environment, so a constant temperature box, also known as a column temperature box, is also needed. Therefore, when separating samples, the temperature inside the column temperature box needs to be accurately measured and controlled. The prior art CN109709246A discloses a gas chromatography column temperature box with a small temperature overcharge, including a box body and a chromatographic column fixedly arranged in the box body, and the sides of the box body are respectively provided with a chromatographic column inlet and a chromatographic column outlet for the two ends of the chromatographic column to pass through; the middle part of the chromatographic column is coiled into a coil shape, and the surface of the coil-shaped chromatographic column is tightly spirally wound with a platinum resistance wire with an insulation treatment on the surface; a temperature measuring circuit board is also provided in the box body, and the platinum resistance wire is electrically connected to the temperature measuring circuit board; the platinum resistance wire is used to heat the chromatographic column, and is also used as a temperature sensor to measure the heating temperature. The column temperature box measures the temperature inside the column temperature box through the temperature measuring circuit board, but the position of the temperature measuring circuit board is fixed, and it can only measure the local temperature, and it is impossible to understand the overall temperature situation in the column temperature box.

[0004] Later, people usually use a metal tube attached to a thermometer to measure the temperature inside the column oven. The metal tube is clamped on the column clamp for temperature measurement, and then the clamping position of the temperature measuring tool is manually adjusted to achieve the purpose of adjusting the temperature measuring position. However, this manual adjustment method is inconvenient to use.

[0005] Therefore, there is an urgent need to provide a temperature measuring tool that is easy to adjust the temperature measurement position in the column temperature box. Utility Model Content

[0006] In order to solve the above technical problems existing in the prior art, the utility model provides a liquid chromatography column oven temperature measurement tool.

[0007] To achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A liquid chromatography column oven temperature measuring tool comprises a fixing frame arranged inside the column oven, a temperature measuring fixture is inserted into the fixing frame, at least one end of the temperature measuring fixture extends out of the fixing frame, and a temperature measuring gauge is arranged at one end of the temperature measuring fixture extending out of the fixing frame;

[0009] A transmission disc and a transmission motor are arranged on one side of the temperature measuring fixture, and the transmission motor drives the transmission disc to rotate; a first anti-skid pad is arranged on one side of the temperature measuring fixture, and a second anti-skid pad is arranged on the outer wall of the transmission disc; the first anti-skid pad and the second anti-skid pad are arranged in contact and roll with each other.

[0010] Furthermore, a fixing plate is arranged on one side of the temperature measuring fixing part, a transmission groove is arranged on a side of the fixing plate away from the temperature measuring fixing part, and a first anti-slip pad is arranged inside the transmission groove.

[0011] Furthermore, a heat-conducting mesh frame is arranged at the end of the temperature measuring fixture where the temperature measuring gauge is arranged, the temperature measuring gauge is arranged inside the heat-conducting mesh frame, and through holes are arranged on the side walls of the heat-conducting mesh frame.

[0012] Furthermore, an arc-shaped plate is provided at one end of the heat-conducting mesh frame away from the temperature measuring fixture.

[0013] Furthermore, an inserting opening is provided inside the other side of the fixing frame where the transmission disk is provided, and one side of the temperature measuring fixing part is inserted into the inserting opening.

[0014] Furthermore, a ball is arranged inside the insertion port, and the ball contacts one side of the temperature measuring fixture.

[0015] Furthermore, a first motor is also arranged inside the column temperature box, an output end of the first motor is fixedly connected to a fixing frame, and the first motor drives the fixing frame to rotate.

[0016] Furthermore, the output end of the first motor is fixedly connected to a steering rod, the other end of the steering rod is connected to an insertion rod, the insertion rod is connected to an insertion tube, and the insertion tube is connected to the fixing frame.

[0017] Furthermore, the cross section of the insertion rod is rectangular, a rectangular groove is provided at one end of the insertion tube, and the insertion rod is inserted into the rectangular groove of the insertion tube.

[0018] Furthermore, a third anti-skid pad is sleeved on the outside of the insertion rod, and a fourth anti-skid pad is arranged in the rectangular groove of the insertion tube.

[0019] Furthermore, the first motor is fixed at a middle position inside the column oven.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The liquid chromatography column oven temperature measuring tool provided by the utility model drives the transmission disk to rotate through the transmission motor, and the transmission disk drives the temperature measuring fixing part to move back and forth, thereby driving the temperature measuring meter to move back and forth, thereby realizing the adjustment of the temperature measuring position of the temperature measuring meter. Compared with the prior art, the utility model solves the inconvenience problem caused by manual adjustment of the temperature measuring position.

[0022] The liquid chromatography column oven temperature measuring tool provided by the utility model drives the fixing frame to rotate by the first motor, thereby driving the temperature measuring fixing part inside the fixing frame to rotate, and the temperature measuring fixing part drives the temperature measuring meter to rotate, thereby changing the position of the temperature measuring meter, further adjusting the temperature measuring position, expanding the temperature measuring position adjustment range, and realizing multi-directional position adjustment.

[0023] The utility model provides a temperature measuring tool for a liquid chromatography column oven, in which a heat-conducting mesh frame is arranged at the end of a temperature measuring fixture, and heat can be transferred to the heat-conducting mesh frame to the maximum extent for temperature detection while protecting a temperature measuring table.

[0024] The liquid chromatography column oven temperature measuring tool provided by the utility model is provided with a rectangular insertion rod and an insertion tube that cooperate with each other between the first motor and the fixed frame, and a third anti-skid pad is provided on the outside of the rectangular insertion rod, and a fourth anti-skid pad is provided in the rectangular groove of the insertion tube, so that the stability of the third anti-skid pad after being inserted into the interior of the insertion tube can be achieved, and the disassembly of the temperature measuring fixing piece can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural frame diagram of the utility model.

[0026] Figure 2 It is the front view of the utility model.

[0027] Figure 3 The figure is a schematic diagram of the internal structure of the utility model from a top view angle.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0029] Description of reference numerals:

[0030] 1. Column temperature box; 2. First motor; 3. Steering rod; 4. Insertion rod; 5. Third anti-skid pad; 6. Fourth anti-skid pad; 7. Insertion tube; 8. Fixed frame; 9. Insertion port; 10. Ball; 11. Temperature measuring fixture; 12. Fixed plate; 13. Transmission groove; 14. First anti-skid pad; 15. Arc plate; 16. Transmission motor; 17. Transmission disk; 18. Second anti-skid pad; 19. Heat-conducting mesh frame; 20. Temperature measuring meter. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.

[0032] It should be noted that, unless otherwise specifically stated, the relative arrangements of components and steps, and numerical expressions set forth in these embodiments should not be construed as limiting the scope of the present invention.

[0033] The following description of the exemplary embodiments is merely illustrative and does not in any sense limit the present invention and its application or use. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail here, but in the case of applying these techniques, methods and devices, these techniques, methods and devices should be regarded as part of this specification.

[0034] The utility model provides a liquid chromatography column temperature box temperature measurement tool, the entire liquid chromatography column temperature box temperature measurement tool is arranged inside the column temperature box 1, and the specific structure is as follows Figure 1 As shown, it includes a first motor 2 arranged inside the column temperature box 1, the first motor 2 is arranged in the middle position inside the column temperature box 1, and the first motor 2 is fixed on the side wall of the column temperature box. The output end of the first motor 2 is arranged horizontally, and the output end of the first motor 2 is fixedly connected to the fixing frame 8, and the first motor 2 drives the fixing frame 8 to rotate along the horizontal axis; a temperature measuring fixture 11 is arranged inside the fixing frame 8, at least one end of the temperature measuring fixture 11 extends out of the fixing frame 8, and a temperature measuring meter 20 is arranged at one end of the temperature measuring fixture 11 extending out of the fixing frame 8.

[0035] In this embodiment, both ends of the temperature measuring fixture 11 extend out of the fixing frame 8, and both ends of the temperature measuring fixture 11 are provided with temperature measuring meters 20, which can realize multi-point temperature measurement and improve the temperature measurement accuracy.

[0036] Preferably, both ends of the temperature measuring fixture 11 are provided with a heat conducting mesh frame 19, a temperature measuring meter 20 is provided inside the heat conducting mesh frame 19, and a through hole is provided on the side wall of the heat conducting mesh frame 19, such as Figure 1 and Figure 2 As shown, the heat-conducting mesh frame 19 is a rectangular hollow structure, and through holes are arranged on the four sides of the heat-conducting mesh frame 19 .

[0037] In order to reduce the collision and friction between the inner wall of the column oven 1 and the heat-conducting mesh frame 19, an arc plate 15 is provided at one end of the heat-conducting mesh frame 19 away from the temperature measuring fixture 11. Figure 1As shown, the arc plate 15 is columnar, and its axis is horizontally arranged. Therefore, during the rotation of the temperature measuring fixture 11, if the arc plate 15 contacts the inner wall of the column temperature box 1, the arc surface will always contact the inner wall of the column temperature box to avoid the tip colliding or scratching the inner wall of the column temperature box 1.

[0038] For the internal structure of the liquid chromatography column oven temperature measurement tool of this embodiment, please refer to Figure 3 and Figure 4 As shown, an insertion opening 9 is provided at one side inside the fixing frame 8, and one side of the temperature measuring fixture 11 is inserted into the insertion opening 9, providing a positioning guide for the assembly of the temperature measuring fixture.

[0039] A fixing plate 12 is arranged on the other side of the temperature measuring fixture 11 relative to the plug-in port 9, and the cross-section of the fixing plate 12 is rectangular. A transmission groove 13 is arranged on the side of the fixing plate 12 away from the temperature measuring fixture 11, and a first anti-slip pad 14 is arranged inside the transmission groove 13; a transmission disk 17 is also arranged on the other side of the temperature measuring fixture 11 relative to the plug-in port 9, and a second anti-slip pad 18 is covered on the outer wall of the transmission disk 17; the first anti-slip pad 14 and the second anti-slip pad 18 are fitted and rolled, and a transmission motor 16 for driving the transmission disk 17 is arranged under the transmission disk 17.

[0040] When the transmission motor 16 drives the transmission disk 17 to rotate, the transmission disk 17 drives the second anti-skid pad 18. Since the first anti-skid pad 14 and the second anti-skid pad 18 roll in close contact, the second anti-skid pad 18 drives the first anti-skid pad 14 to move linearly, thereby realizing the reciprocating movement of the temperature measuring fixture 11. By adjusting the number of rotations of the transmission motor 16, the moving range of the temperature measuring fixture is adjusted; and then the moving range of the temperature measuring meter 20 is adjusted.

[0041] In order to reduce the friction between the temperature measuring fixture 11 and the fixed frame 8, a ball 10 is arranged inside the insertion port 9. The number of the ball 10 can be set to multiple. The ball 10 contacts one side of the temperature measuring fixture 11. During the reciprocating movement of the temperature measuring fixture 11, the ball 10 contacts the temperature measuring fixture 11, rather than the inner wall of the insertion port 9 contacting the temperature measuring fixture 11, thereby reducing the friction between the temperature measuring fixture 11 and the fixed frame 8.

[0042] Preferably, the output end of the first motor 2 is fixedly connected with a steering rod 3, the other end of the steering rod 3 is connected to a plug rod 4, the plug rod 4 is connected to an insertion tube 7, and the insertion tube 7 is connected to the fixing frame 8. The plug rod 4 is L-shaped, and its cross section is rectangular. The plug rod 4 is bent upward; a rectangular groove is set at one end of the insertion tube 7, and the plug rod 4 is inserted into the rectangular groove of the insertion tube 7. When the first motor 2 drives the plug rod 4 to rotate, the rotation angle of the plug rod 4 from the horizontal direction is less than 90 degrees, so as to prevent the plug rod 4 from falling off from the insertion tube 7. A third anti-skid pad 5 is sleeved on the outside of the plug rod 4, and a fourth anti-skid pad 6 is set in the rectangular groove of the insertion tube 7. A rectangular plug rod 4 and an insertion tube 7 that cooperate with each other are set between the first motor 2 and the fixing frame 8, and a third anti-skid pad 5 is set on the outside of the rectangular plug rod 4, and a fourth anti-skid pad 6 is set in the rectangular groove of the insertion tube 7, so that the stability of the third anti-skid pad 5 after being inserted into the insertion tube 7 can be achieved, and the disassembly of the electric push rod can be conveniently realized.

[0043] Preferably, the temperature measuring fixture 11 is an electric push rod. Figure 2 As shown, the number of the electric push rods is 2, the extending directions of the extending ends of the two electric push rods are opposite, and the fixed ends of the two electric push rods are welded to each other to form a temperature measuring fixture 11; both ends of the temperature measuring fixture 11 extend out of the fixing frame 8, and both ends of the temperature measuring fixture 11 are provided with a temperature measuring meter 20. The electric push rod can be extended and retracted, thereby driving the temperature measuring meter 20 to extend and retract along the extension direction of the electric push rod.

[0044] The electric push rod is driven to rotate by the first motor 2, thereby driving the temperature meter 20 to rotate in the horizontal direction, so as to change the height of the temperature meter 20. The electric push rod drives the temperature meter 20 to move back and forth, so as to adjust the position of the temperature meter 20 along the pushing direction of the electric push rod, thereby realizing the adjustment of the multi-directional position of the temperature meter 20 and realizing the multi-directional temperature measurement inside the column temperature box 1.

[0045] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A liquid chromatography column oven temperature measurement tool, characterized in that: It comprises a fixing frame arranged inside the column temperature box, a temperature measuring fixing piece is inserted into the fixing frame, at least one end of the temperature measuring fixing piece extends out of the fixing frame, and a temperature measuring meter is arranged at one end of the temperature measuring fixing piece extending out of the fixing frame; A transmission disc and a transmission motor are arranged on one side of the temperature measuring fixture, and the transmission motor drives the transmission disc to rotate; a first anti-skid pad is arranged on one side of the temperature measuring fixture, and a second anti-skid pad is arranged on the outer wall of the transmission disc; the first anti-skid pad and the second anti-skid pad are arranged in contact and roll with each other.

2. The liquid chromatography column oven temperature measuring tool according to claim 1, characterized in that: A fixing plate is arranged on one side of the temperature measuring fixing part, a transmission groove is arranged on a side of the fixing plate away from the temperature measuring fixing part, and a first anti-slip pad is arranged inside the transmission groove.

3. The liquid chromatography column oven temperature measuring tool according to claim 1, characterized in that: A heat-conducting mesh frame is arranged at the end of the temperature measuring fixture where the temperature measuring gauge is arranged, the temperature measuring gauge is arranged inside the heat-conducting mesh frame, and through holes are arranged on the side walls of the heat-conducting mesh frame.

4. The liquid chromatography column oven temperature measuring tool according to claim 3, characterized in that: An arc plate is arranged at one end of the heat-conducting mesh frame away from the temperature measuring fixture.

5. The liquid chromatography column oven temperature measuring tool according to claim 1, characterized in that: The fixing frame has an inserting opening inside the other side of the transmission disc, and one side of the temperature measuring fixing piece is inserted into the inserting opening.

6. The liquid chromatography column oven temperature measuring tool according to claim 5, characterized in that: A ball is arranged inside the insertion port, and the ball contacts one side of the temperature measuring fixture.

7. The liquid chromatography column oven temperature measuring tool according to claim 1, characterized in that: A first motor is also arranged inside the column temperature box, an output end of the first motor is fixedly connected to a fixing frame, and the first motor drives the fixing frame to rotate.

8. The liquid chromatography column oven temperature measuring tool according to claim 7, characterized in that: The output end of the first motor is fixedly connected with a steering rod, the other end of the steering rod is connected with an insertion rod, the insertion rod is connected with an insertion tube, and the insertion tube is connected with the fixing frame.

9. The liquid chromatography column oven temperature measuring tool according to claim 8, characterized in that: The cross section of the insertion rod is rectangular, a rectangular groove is arranged at one end of the insertion tube, and the insertion rod is inserted into the rectangular groove of the insertion tube.

10. The liquid chromatography column oven temperature measuring tool according to claim 9, characterized in that: A third anti-skid pad is sleeved on the outside of the insertion rod, and a fourth anti-skid pad is arranged in the rectangular groove of the insertion tube.

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