Ion chromatograph preheating temperature control device

Abstract

The utility model discloses a preheating temperature control device for an ion chromatograph, and particularly relates to the technical field of chromatographic instruments, which comprises a tank body, a cover plate is connected above the tank body, a liquid guide pipe is fixedly connected to the top of the cover plate, and an electric heating ceramic chip is connected to the inner wall of the tank body; a motor is connected to the middle position of the lower portion of the tank body, one end of an output shaft of the motor penetrates through the interior of the tank body and is connected with a shaft rod, a plurality of blades are annularly connected to the outer side of the shaft rod, and the motor is started to drive the shaft rod and the blades to rotate while the electric heating ceramic chips are used for heating; by arranging four connecting rods, stirring of heat-conducting media in the tank body is facilitated, heat transfer between the heat-conducting media is faster and more uniform, the heating efficiency of the liquid guide pipe is improved, meanwhile, by arranging the four connecting rods, disturbance of the heat-conducting media in the rotating process is facilitated, and the temperature uniformity effect of the heat-conducting media in the tank body is improved; and the heating efficiency of the liquid guide pipe is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographic instruments, in particular to a preheating temperature control device for an ion chromatograph. Background Art

[0002] Ion chromatography is a type of high performance liquid chromatography. It is a liquid chromatography method for determining the types and contents of anions, cations and some polar organic substances. The chromatographic column is the core part of the ion chromatograph. Its main function is to separate the different components in the mixture so that they can be detected, identified and analyzed. The chromatographic column of the chromatograph generally needs to work stably at a constant temperature. Therefore, before normal analysis, the chromatograph needs to use an ion chromatograph preheating temperature control device to heat the chromatographic column pool to a constant stable temperature, that is, to ensure the normal working temperature range of the chromatographic column.

[0003] A Chinese patent discloses an ion chromatography eluent preheating device (Announcement No. CN212568654 U). This patented technology sets a heating component and a temperature control component, uses the heating component to heat the heat-conducting medium in the box, and uses the temperature control component to control the temperature, so that a constant temperature bath is formed in the box, and the constant temperature bath is used to heat the eluent entering the liquid guide tube, so that the eluent is fully heated to achieve a uniform heating effect. However, this heating method easily causes the heating speed of the heat-conducting medium in the middle of the box to be slower than the heating speed near the inner wall of the box, resulting in low heating efficiency of the liquid guide tube in the box. Utility Model Content

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An ion chromatograph preheating temperature control device, comprising:

[0006] A tank body, wherein a positioning mechanism is arranged on the outer wall of the tank body near the top, a cover plate is connected to the top of the tank body through the positioning mechanism, a liquid guide tube is fixedly connected to the top of the cover plate, both ends of the liquid guide tube extend to the outside of the cover plate, and an electric heating ceramic sheet is connected to the inner wall of the tank body;

[0007] A motor is connected to the middle position below the tank body, one end of the motor output shaft passes through the tank body and is connected to a shaft rod, and a plurality of blades are circumferentially connected to the outer side of the shaft rod.

[0008] In a possible implementation, four connecting rods are circumferentially connected to the outer side of the liquid guiding tube below the cover plate.

[0009] In a possible implementation, a temperature sensor is connected to an inner wall of the tank body at a position away from the blades, a controller is connected to a lower portion of the tank body at a position away from the motor, and the temperature sensor is connected to an input end of the controller.

[0010] In a possible implementation, the positioning mechanism includes a shell connected to the outer wall of the tank, the top of the shell is provided with six first through holes in a circumferential direction, a positioning rod is connected through the inside of the first through hole, a positioning hole is provided at the end of the positioning rod, a fixing block is connected to the top end of the positioning rod, and the fixing block is fixedly connected to the outer side of the cover plate;

[0011] The inside of the shell is slidably connected with a collar, the outside of the collar is circumferentially connected with six L-shaped rods, and one end of the L-shaped rod passes through the inside of the positioning hole.

[0012] In a possible implementation, a pair of second through holes are correspondingly opened on the outer side of the shell, and a lever is connected inside and on the second through holes, and one end of the lever is fixedly connected to the ring.

[0013] In a possible implementation manner, a sealing ring is fixedly connected to the top of the tank body.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. While heating with the electric heating ceramic sheet, turning on the motor to drive the shaft and several blades to rotate is beneficial to stirring the heat-conducting medium in the tank body, making the heat transfer between the heat-conducting medium faster and more uniform, thereby improving the heating efficiency of the liquid guide tube. At the same time, by setting four connecting rods, it is beneficial to disturb the heat-conducting medium in the rotating process, thereby improving the temperature uniformity of the heat-conducting medium in the tank body and further improving the heating efficiency of the liquid guide tube.

[0016] 2. By turning the lever counterclockwise, the collar and the six L-shaped rods on its outside are removed from the positioning rod, which facilitates the separation of the positioning rod from the outer shell, and then facilitates the quick disassembly of the cover plate, which facilitates the cleaning and maintenance of the inside of the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a bottom view of the tank body of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure below the cover plate of the utility model;

[0021] Figure 4 It is a top view of the internal structure of the tank body of the utility model;

[0022] Figure 5 It is a bottom sectional view of the bottom of the shell of the utility model.

[0023] Description of reference numerals:

[0024] 1. Liquid guide tube; 2. Cover plate; 3. Shell; 4. Tank body; 5. Controller; 6. Motor; 7. Fixing block; 8. Positioning hole; 9. Connecting rod; 10. Positioning rod; 11. Electric heating ceramic sheet; 12. Temperature sensor; 13. Blade; 14. Shaft; 15. First through hole; 16. Ring; 17. L-shaped rod; 18. Second through hole; 19. Push rod; 20. Sealing ring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The embodiment of the present application solves the problems in the prior art by providing an ion chromatograph preheating temperature control device.

[0027] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0028] Embodiment 1:

[0029] The specific structure of this embodiment is as follows: Figure 1-Figure 4 As shown, an ion chromatograph preheating temperature control device comprises:

[0030] The top of the tank body 4 is connected with a cover plate 2 through a positioning mechanism, the top of the cover plate 2 is fixedly connected with a liquid guide tube 1, both ends of the liquid guide tube 1 extend to the outside of the cover plate 2, and the inner wall of the tank body 4 is connected with an electric heating ceramic sheet 11. When the electric heating ceramic sheet 11 is turned on, it heats the heat-conducting medium in the tank body 4;

[0031] A motor 6 is connected to the middle position below the tank body 4, one end of the output shaft of the motor 6 passes through the interior of the tank body 4 and is connected to a shaft 14, and a plurality of blades 13 are circumferentially connected to the outer side of the shaft 14. Turning on the motor 6 to drive the shaft 14 and the plurality of blades 13 to rotate is beneficial to stirring the heat-conducting medium in the tank body 4, so that heat is transferred between the heat-conducting medium faster and more evenly, thereby improving the heating efficiency of the liquid catheter 1.

[0032] In some examples, four connecting rods 9 are circumferentially connected to the outer side of the liquid guiding tube 1 below the cover plate 2. By providing four connecting rods 9, it is beneficial to disturb the heat-conducting medium in the rotating process, improve the temperature uniformity of the heat-conducting medium in the tank body 4, and further improve the heating efficiency of the liquid guiding tube 1.

[0033] In some examples, a temperature sensor 12 is connected to the inner wall of the tank body 4 at a position away from the blades 13, and a controller 5 is connected to the bottom of the tank body 4 at a position away from the motor 6. The temperature sensor 12 is connected to the input end of the controller 5. A heat-conducting medium can be injected into the tank body 4. The temperature sensor 12 will monitor the water temperature of the heat-conducting medium in real time. The water temperature data monitored by the temperature sensor 12 will be transmitted to the controller 5 in real time. When the water temperature drops, the controller 5 controls to turn on the electric heating ceramic sheet 11 to heat the heat-conducting medium in the tank body 4. When the water temperature of the heat-conducting medium in the tank body 4 rises to the set value, the controller 5 controls to turn off the electric heating ceramic sheet 11, thereby achieving the effect of preheating and temperature control.

[0034] In some examples, a sealing ring 20 is fixedly connected to the top of the tank body 4 , which helps to increase the sealing effect between the tank body 4 and the cover plate 2 .

[0035] The utility model heats the electric heating ceramic sheet 11 while starting the motor 6 to drive the shaft 14 and the plurality of blades 13 to rotate, which is beneficial to stirring the heat-conducting medium in the tank body 4, so that the heat is transferred between the heat-conducting medium faster and more evenly, thereby improving the heating efficiency of the liquid guiding tube 1. At the same time, by setting four connecting rods 9, it is beneficial to disturb the heat-conducting medium in the rotating process, thereby improving the temperature uniformity of the heat-conducting medium in the tank body 4 and further improving the heating efficiency of the liquid guiding tube 1.

[0036] Embodiment 2:

[0037] The specific structure of this embodiment is as follows: Figure 1-Figure 5 As shown, the positioning mechanism includes a shell 3 connected to the outer wall of the tank body 4, six first through holes 15 are circumferentially opened on the top of the shell 3, a positioning rod 10 is connected through the inside of the first through hole 15, a positioning hole 8 is opened at the end of the positioning rod 10, and a fixing block 7 is connected to the top of the positioning rod 10, and the fixing block 7 is fixedly connected to the outer side of the cover plate 2;

[0038] The outer shell 3 is slidably connected to a collar 16, and the outer side of the collar 16 is circumferentially connected to six L-shaped rods 17. One end of the L-shaped rod 17 passes through the interior of the positioning hole 8. When one end of the L-shaped rod 17 is inserted into the interior of the positioning hole 8, the positioning rod 10 can be fixed, and then the cover plate 2 can be installed and fixed.

[0039] In some examples, a pair of second through holes 18 are correspondingly opened on the outer side of the shell 3, and a lever 19 is connected inside and on the second through hole 18. One end of the lever 19 is fixedly connected to the ring 16. By moving the lever 19, the ring 16 and the six L-shaped rods 17 on the outside of it can be easily driven to move.

[0040] The utility model drives the ring 16 and the six L-shaped rods 17 on its outer side to be removed from the positioning rod 10 by toggling the lever 19 counterclockwise, so as to facilitate the separation of the positioning rod 10 from the shell 3, and then facilitate the rapid disassembly of the cover plate 2, and facilitate the cleaning and maintenance of the interior of the tank body 4. Similarly, when the cover plate 2 needs to be installed, the six positioning rods 10 under the cover plate 2 are inserted into the shell 3, and then the lever 19 is toggled clockwise to drive the ring 16 and the six L-shaped rods 17 on its outer side to be inserted into the positioning hole 8 in the positioning rod 10, so as to complete the fixation of the positioning rod 10, and then complete the installation and fixation of the cover plate 2.

[0041] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An ion chromatograph preheating temperature control device, characterized in that: include: A tank body (4), wherein a positioning mechanism is provided on the outer wall of the tank body (4) near the top, a cover plate (2) is connected to the top of the tank body (4) via the positioning mechanism, a liquid guide tube (1) is fixedly connected to the top of the cover plate (2), both ends of the liquid guide tube (1) extend to the outside of the cover plate (2), and an electric heating ceramic sheet (11) is connected to the inner wall of the tank body (4); A motor (6) is connected to the middle position below the tank body (4); one end of the output shaft of the motor (6) passes through the interior of the tank body (4) and is connected to a shaft (14); and a plurality of blades (13) are circumferentially connected to the outer side of the shaft (14).

2. The ion chromatograph preheating temperature control device according to claim 1, characterized in that: Four connecting rods (9) are circumferentially connected to the outer side of the liquid guiding tube (1) below the cover plate (2).

3. The ion chromatograph preheating temperature control device according to claim 1, characterized in that: A temperature sensor (12) is connected to a position of the inner wall of the tank body (4) away from the blades (13), a controller (5) is connected to a position below the tank body (4) away from the motor (6), and the temperature sensor (12) is connected to an input end of the controller (5).

4. The ion chromatograph preheating temperature control device according to claim 1, characterized in that: The positioning mechanism comprises a shell (3) connected to the outer wall of the tank body (4), six first through holes (15) are circumferentially formed on the top of the shell (3), a positioning rod (10) is connected through the inside of the first through hole (15), a positioning hole (8) is formed at the end of the positioning rod (10), a fixing block (7) is connected to the top end of the positioning rod (10), and the fixing block (7) is fixedly connected to the outer side of the cover plate (2); A collar (16) is slidably connected to the interior of the housing (3), and six L-shaped rods (17) are circumferentially connected to the outer side of the collar (16), and one end of the L-shaped rod (17) passes through the interior of the positioning hole (8).

5. The ion chromatograph preheating temperature control device according to claim 4, characterized in that: A pair of second through holes (18) are correspondingly opened on the outer side of the shell (3), and a lever (19) is connected inside and on the second through holes (18), and one end of the lever (19) is fixedly connected to the collar (16).

6. The ion chromatograph preheating temperature control device according to claim 1, characterized in that: A sealing ring (20) is fixedly connected to the top of the tank body (4).

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