Water bath constant-temperature stirring device

Abstract

The utility model relates to the technical field of soil testing, and provides a water bath constant-temperature stirring device which comprises a rack, a constant-temperature water tank mounted in the rack, a movable frame slidably arranged on the rack, a mounting plate slidably attached in the movable frame, a stirring component arranged on the mounting plate, a supporting plate fixedly connected in the constant-temperature water tank, and a plurality of groups of sample tubes inserted on the supporting plate, each group comprises six sample tubes; a fixed frame is fixedly connected to the mounting plate, an air cylinder is mounted on the movable frame, and the telescopic end of the air cylinder is fixedly connected to the fixed frame; a heating element and a temperature sensor are arranged in the constant-temperature water tank, an electronic control system is installed on the machine frame and comprises a microprocessor, a display screen and an operation button, manual stirring is not needed, risks are reduced, the stirring height can be adjusted, multiple sets of samples can be stirred at the same time, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil test technical field, more specifically, especially relate to water bath constant temperature stirring device. BACKGROUND

[0002] Constant temperature water bath stirring is a kind of laboratory equipment, combines constant temperature control and stirring function, commonly used in chemical and biological experiments. It provides constant temperature environment in water bath, and mixes liquid sample by stirrer to ensure that reaction, cultivation or mixing are carried out under specific temperature conditions;Based on participating in the third national soil survey experimental test work, in order to meet the determination process of free iron index in soil, the sample in centrifugal tube needs to be continuously stirred for 15 minutes in water bath constant temperature state (80 DEG C).

[0003] In prior art, it is mainly heated by electric hot plate and stirred manually, and its shortcomings are as follows:

[0004] 1. Manual stirring height cannot be accurately controlled;

[0005] 2. Each person can stir at most two samples simultaneously, and the stirring work of a large number of samples is carried out for a long time at low speed, and personnel physical consumption is large;

[0006] 3. Personnel in manual stirring work is prone to safety risk. UTILITY MODEL CONTENT

[0007] The utility model aims at providing water bath constant temperature stirring device, which does not need manual stirring, reduces risk, can adjust stirring height, can stir multiple groups of samples simultaneously and improves efficiency.

[0008] Water bath constant temperature stirring device, including frame, constant temperature water tank is installed in the frame, sliding frame is slid on the frame, the installation plate is slid and attached in the sliding frame, the stirring assembly is arranged on the installation plate, the constant temperature water tank is inserted with the supporting plate, and the supporting plate is inserted with multiple groups of sample tubes, and each group has six sample tubes;Fixed frame is fixedly connected on the installation plate, air cylinder is installed on the sliding frame, and the telescopic end of the air cylinder is fixedly connected to the fixed frame;The constant temperature water tank is provided with heating element and temperature sensor, and the frame is provided with electronic control system, and the electronic control system includes microprocessor, display screen and operation button.

[0009] Further, the sample tube is provided with five groups.

[0010] Further, the stirring assembly includes rotating rod penetrating and being rotatably connected to the supporting plate, and a plurality of stirring blades are fixedly connected to the circumferential wall of the rotating rod.

[0011] Further, the number and position of the rotating rods are matched with the number and position of the sample tubes.

[0012] Further, the stirring assembly further comprises a driving motor mounted on the mounting plate, a first pulley is fixed to the output end of the driving motor, two second pulleys are fixed to the rotating rods, the first pulley and the adjacent second pulley in the same group are connected through a first belt transmission, and the second pulleys on the adjacent two rotating rods in the same group are connected through a second belt transmission.

[0013] Further, the stirring blades are provided in at least two.

[0014] Further, a sealing ring is fixed to the lower end surface of the mounting plate.

[0015] Further, the sealing ring and the stirring blades are made of polytetrafluoroethylene material.

[0016] Further, a threaded rod is rotatably connected to the bottom of the rack, one end of the threaded rod is fixed to the output end of a servo motor, a connecting block is fixed to the moving frame, and the connecting block is screwed to the threaded rod.

[0017] Further, supporting blocks are fixed to the two sides of the rack, and grooves matched with the supporting blocks are formed in the rack.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] In the utility model, the mounting plate is lifted by the output of the air cylinder, and the stirring assembly is separated from the sample tubes. Since the supporting plate is provided with a plurality of groups of sample tubes, the required amount of sample can be added in the sample tubes. The mounting plate is lowered to the appropriate height by the output of the air cylinder, the height of the stirring blades can be adjusted according to the height of different solutions, the stirring blades are inserted into the sample tubes, the driving motor, the first pulley, the first belt, the second pulley and the second belt are driven in cooperation, manual stirring is not needed, the risk is reduced, the stirring height can be adjusted, a plurality of groups of samples can be stirred at the same time, and the efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0021] Fig. 1 It is the overall structure schematic view of water bath constant temperature stirring device;

[0022] Fig. 2 It is the bottom schematic view of rack;

[0023] Fig. 3 is a schematic view of the stirring assembly;

[0024] Fig. 4 is a schematic view of the stirring assembly and the frame.

[0025] In the figure: 1, frame; 2, constant temperature water tank; 3, electronic control system; 4, moving frame; 5, mounting plate; 6, stirring assembly; 61, rotating rod; 62, stirring blade; 63, driving motor; 64, first belt pulley; 65, second belt pulley; 66, first belt; 67, second belt; 7, supporting plate; 8, sample tube; 9, fixing frame; 10, air cylinder; 11, sealing ring; 12, threaded rod; 13, servo motor; 14, connecting block; 15, supporting block; 16, groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Specific embodiments:

[0028] As Figs. 1-4As shown, the water bath constant temperature stirring device, including frame 1, frame 1 installed with constant temperature water tank 2, frame 1 on the sliding movement frame 4, movement frame 4 in the sliding fit with mounting plate 5, mounting plate 5 is provided with stirring assembly 6, constant temperature water tank 2 is inserted with the supporting plate 7, the supporting plate 7 is inserted with a plurality of sample tubes 8, each group has six sample tubes 8, in this embodiment, there are five groups of sample tubes 8, that is, in this embodiment, the supporting plate 7 is inserted with thirty sample tubes 8, stirring assembly 6 includes rotating rod 61 penetrating and rotatingly connected to the supporting plate 7, the number and position of rotating rod 61 are adapted to the number and position of sample tubes 8, rotating rod 61 is fixedly connected with a plurality of stirring blades 62 on the circumferential wall below the supporting plate 7, stirring blade 62, stirring blade 62 can enter into the sample tube 8 to stir with the descent of mounting plate 5; stirring assembly 6 further includes a drive motor 63 mounted on mounting plate 5, the output end of drive motor 63 is fixedly connected with first pulley 64, two second pulleys 65 are fixedly connected on rotating rod 61 in vertical direction, first pulley 64 and adjacent second pulley 65 in the same group are drivingly connected through first belt 66, second pulleys 65 on adjacent two rotating rods 61 in the same group are drivingly connected through second belt 67; mounting plate 5 is fixedly connected with fixed frame 9, air cylinder 10 is installed on movement frame 4, the extension end of air cylinder 10 is fixedly connected to fixed frame 9. The output of air cylinder 10 makes mounting plate 5 rise, and stirring assembly 6 is separated from sample tube 8, since a plurality of sample tubes 8 are inserted on the supporting plate 7, the required number of samples can be added in the sample tube 8, the mounting plate 5 is lowered to the appropriate height by the output of air cylinder 10, the height of stirring blade 62 can be adjusted according to the height of different solutions, so that stirring blade 62 is inserted into sample tube 8, through the driving cooperation of drive motor 63, first pulley 64, first belt 66, second pulley 65 and second belt 67, manual stirring is not required, the risk is reduced, the stirring height can be adjusted, a plurality of samples can be stirred at the same time, and the efficiency is improved.

[0029] The constant-temperature water tank 2 is provided with a heating element and a temperature sensor. The heating element is an electric heating tube, which provides heat energy. The temperature sensor (such as a thermocouple) is used to monitor the temperature of the water bath in real time. The rack 1 is provided with an electronic control system 3, which includes a microprocessor, a display screen, and operation buttons, and is used to set the target temperature, display the current temperature, and control the operation of the heating element. After the user sets the target temperature through the electronic control system, the heating element starts to work and transfers heat to the liquid medium in the water tank. As the temperature rises, the temperature sensor continuously detects and feeds back to the control system, and when the set temperature is reached, the control system automatically adjusts the power of the heating element to maintain a constant temperature. This closed-loop control ensures the stability and accuracy of the water bath temperature. This part can be purchased as a complete set of equipment on the market and integrated into the water bath constant-temperature stirring device. It can set the working temperature of the water bath according to the detection method requirements and maintain a constant temperature, solving the problem of unstable sample temperature.

[0030] As shown in Figs. 1-4 , the stirring blades 62 are arranged at least two, and in this embodiment, four are arranged. The stirring blades 62 and the lower end part of the rotating rod 61 are made of polytetrafluoroethylene material, which is almost not reacted with any chemical substances and has very strong corrosion resistance, and can withstand the corrosion of strong acid, strong alkali, and strong oxidizing agent. At the same time, it also has low friction coefficient and good high temperature resistance, which can better adapt to the stirring work.

[0031] As shown in Figs. 1-4 , the lower end surface of the mounting plate 5 is fixedly connected with a sealing ring 11 which is matched with the number and position of the rotating rod 61. The sealing ring 11 is made of polytetrafluoroethylene material, and the outer diameter of the sealing ring 11 is the same as the inner diameter of the sample tube 8. After the mounting plate 5 is lowered to make the stirring blades 62 extend into the sample tube 8, the sealing ring 11 cooperates with the mounting plate 5 to seal the sample tube 8, thereby improving the sealing effect.

[0032] As shown in Figs. 1-4 , the bottom of the rack 1 is rotatably connected with a threaded rod 12 through a bearing seat (not shown in the figure). One end of the threaded rod 12 penetrates the rack 1 (penetrates through the bearing seat and is rotatably connected to the rack 1) and is fixedly connected with the output end of a servo motor 13 mounted on the rack 1. The moving frame 4 is fixedly connected with a connecting block 14 which is threadedly connected to the threaded rod 12. The output of the servo motor 13 makes the threaded rod 12 rotate, and cooperates with the connecting block 14 to make the moving frame 4 slide on the rack 1, thereby adjusting the position of the mounting plate 5 and the stirring assembly 6, and facilitating the addition of samples and required chemical reagents in the sample tube 8.

[0033] As shown in Figs. 1-4As shown, the two sides of the rack 1 are fixedly connected with the supporting blocks 15, the rack 1 is provided with the grooves 16 matched with the supporting blocks 15, the grooves 16 are slidably matched with the supporting blocks 15, the rack 1 is supported by the supporting blocks 15, and the supporting pressure of the threaded rods 12 on the supporting connecting blocks 14 and the rack 1 is reduced.

[0034] The working principle of the water bath constant temperature stirring device in the embodiment is as follows: when used, 30 samples are accurately weighed and sequentially filled into the sample tubes 8, the required chemical reagent and appropriate 80 DEG C warm water are added, and the temperature of the constant temperature water tank 2 is set by the electronic control system 3. The stirring assembly 6 is driven by the servo motor 13 to move above the supporting plate 7 and is aligned with the sample tube 8, the mounting plate 5 is lowered by the output of the air cylinder 10, the stirring blades 62 are extended into the sample tube 8, the driving motor 63 is started, and the stirring blades 62 simultaneously stir the samples in the sample tubes 8, manual stirring is not required, the risk is reduced, the stirring height can be adjusted, a plurality of samples can be simultaneously stirred, and the efficiency is improved.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A water bath constant temperature stirring device, characterized in that: The system includes a frame (1), a constant temperature water bath (2) installed inside the frame (1), a movable frame (4) sliding on the frame (1), an installation plate (5) sliding inside the movable frame (4), a stirring assembly (6) on the installation plate (5), a tray (7) inserted inside the constant temperature water bath (2), multiple sets of sample tubes (8) inserted on the tray (7), each set having six sample tubes (8); a fixed frame (9) fixedly connected to the installation plate (5), a cylinder (10) installed on the movable frame (4), the telescopic end of the cylinder (10) fixedly connected to the fixed frame (9); a heating element and a temperature sensor are provided inside the constant temperature water bath (2), and an electronic control system (3) is installed on the frame (1), the electronic control system (3) including a microprocessor, a display screen and operation buttons.

2. The water bath constant temperature stirring device according to claim 1, characterized in that: The sample tubes (8) are provided in five sets.

3. The water bath constant temperature stirring device according to claim 1, characterized in that: The stirring assembly (6) includes a rotating rod (61) that passes through and is rotatably connected to the tray (7), and a plurality of stirring blades (62) are fixed to the peripheral sidewall of the rotating rod (61).

4. The water bath constant temperature stirring device according to claim 3, characterized in that: The number and position of the rotating rods (61) are adapted to the number and position of the sample tubes (8).

5. The water bath constant temperature stirring device according to claim 4, characterized in that: The stirring assembly (6) also includes a drive motor (63) mounted on the mounting plate (5). The output end of the drive motor (63) is fixedly connected to a first pulley (64). Two second pulleys (65) are fixedly connected to the rotating rod (61). The first pulley (64) and the adjacent second pulley (65) in the same group are connected by a first belt (66). The second pulleys (65) on two adjacent rotating rods (61) in the same group are connected by a second belt (67).

6. The water bath constant temperature stirring device according to claim 3, characterized in that: At least two stirring blades (62) are provided.

7. The water bath constant temperature stirring device according to claim 3, characterized in that: A sealing ring (11) is fixed to the lower end face of the mounting plate (5).

8. The water bath constant temperature stirring device according to claim 7, characterized in that: Both the sealing ring (11) and the stirring blade (62) are made of polytetrafluoroethylene.

9. The water bath constant temperature stirring device according to claim 1, characterized in that: The bottom of the frame (1) is rotatably connected to a threaded rod (12), one end of which is fixedly connected to the output end of a servo motor (13). A connecting block (14) is fixedly connected to the moving frame (4), and the connecting block (14) is screwed to the threaded rod (12).

10. The water bath constant temperature stirring device according to claim 9, characterized in that: Both sides of the frame (1) are fixed with support blocks (15), and the frame (1) has grooves (16) that are adapted to the support blocks (15).

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