Stirring device for oil bath pan

Abstract

The utility model discloses a stirring device for an oil bath pan, which belongs to the technical field of experimental instruments and comprises an oil bath pan and a motor, a rotating shaft of the motor is connected with a spline shaft, the spline shaft is slidably connected with a spline housing, the lower end of the spline shaft is fixedly connected with a rotating arm, the rotating arm is provided with a long sliding hole, the long sliding hole is slidably connected with a moving seat, and the upper end of the moving seat is hinged with a connecting rod. The other end of the connecting rod is hinged to the lower end of a spline sleeve, the spline sleeve is connected with a lifting component, the lower end of the movable seat is connected with a stirring rod, the oil bath pan is fixedly connected with a suspended support, a switch seat is arranged on the suspended support, and the position of the switch seat corresponds to that of the movable seat. Therefore, the reaction temperature of the experiment is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, in particular to a stirring device for an oil bath pot. Background Art

[0002] Oil bath is a temperature control device, which is widely used in chemical reaction, drug synthesis, biotechnology, compressor oil lubrication test and other experimental fields, and can be used for laboratory work such as organic synthesis reaction, chemical analysis, material processing, etc. It is an ideal and necessary tool for laboratory personnel in universities, colleges, environmental protection, scientific research, health, epidemic prevention, petroleum, metallurgy, chemical industry, medical and other units.

[0003] The oil bath pot consists of a pot body, power supply, temperature controller and base, and is usually made of stainless steel, aluminum alloy and other materials, with good corrosion resistance and thermal conductivity.

[0004] The working principle of the oil bath is to use the heater to transfer heat to the oil, so that the oil temperature rises, thereby controlling the temperature of the reaction process. The temperature in the oil is detected by the temperature sensor and fed back to the temperature controller. The temperature controller controls the operation of the heater by automatically adjusting the current output by the power supply, so that the oil temperature is always kept within the set range.

[0005] The transfer of heat energy in an oil bath mainly relies on convection, resulting in a slow heating speed and uneven temperature distribution. Even for a magnetic stirring oil bath, the magnetic stirring function is added, but the effect of magnetic stirring is still limited. When the oil bath is relatively large or the amount of oil is large, the temperature cannot be uniform. Especially when a reaction bottle is placed in the pot, it will affect the stirring of the magnetic particles, making it impossible to ensure the uniformity of the oil temperature. A uniform stirring device is needed. Summary of the invention

[0006] In order to solve the above problems in the prior art, a stirring device for an oil bath pot is provided.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] The utility model proposes a stirring device for an oil bath pot, comprising an oil bath pot and a motor, wherein the rotating shaft of the motor is connected to a spline shaft, the spline shaft is slidably connected to a spline sleeve, the lower end of the spline shaft is fixedly connected to a rotating arm, the rotating arm is provided with a long sliding hole, the long sliding hole is slidably connected to a moving seat, the upper end of the moving seat is hinged with a connecting rod, the other end of the connecting rod is hinged to the lower end of the spline sleeve, the spline sleeve is connected to a lifting component, and the lower end of the moving seat is connected to a stirring rod.

[0009] Preferably, the oil bath pot is fixedly connected to a suspended bracket, and a switch seat is provided on the suspended bracket, and the position of the switch seat corresponds to the movable seat.

[0010] Preferably, a reversing delay switch 1 is provided on one side of the switch seat, and a reversing switch 2 is provided on the other side of the switch seat.

[0011] Preferably, the motor is fixedly connected to an adjustment frame.

[0012] Preferably, the lifting component adopts an electric push rod, the upper end of the electric push rod is connected to the spline sleeve, and the lower end of the electric push rod is fixedly connected to the adjustment frame.

[0013] Preferably, the motor and the spline shaft are transitionally connected using a reducer.

[0014] Preferably, the adjustment frame further comprises a frame body and a base, and a locking screw is arranged between the frame body and the base.

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

[0016] 1. The present application sets a spline shaft and a spline sleeve, and uses a connecting rod to move the position of the movable seat on the rotating arm, thereby driving the stirring rod to adjust the position in the oil bath pot, so that the experiment can better adapt to the size of the experimental container, achieve stirring to make the temperature in the oil bath pot uniform, prevent local overheating from affecting the experimental results, and improve the experimental accuracy and efficiency.

[0017] 2. The present application is provided with a switch seat. Through the reversing delay switch 1 and the reversing switch 2 on the switch seat, when the rotating arm drives the movable seat to rotate, the movable seat drives the stirring rod to rotate in the opposite direction when it touches the switch seat, so that the stirring rod can continuously stir in the oil bath pot, and can effectively avoid obstacles to ensure uniform stirring, which is helpful to stabilize the temperature of the experiment and control the temperature in the oil bath pot.

[0018] 3. The present application is provided with an adjustment frame, which includes a frame body and a base. The height of the adjustment frame can be adjusted by a locking screw, which can better adapt the stirring device to experimental containers of different heights and experiments of different standards, expand the application scope of the stirring device, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is an overall schematic diagram of the utility model;

[0021] Figure 2 It is a partial three-dimensional schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the stirring trajectory of the utility model;

[0023] Figure 4This is a second schematic diagram of the stirring trajectory of the utility model;

[0024] Description of reference numerals:

[0025] 1. Oil bath pot; 2. Stirring rod; 3. Suspension bracket; 4. Switch seat; 5. Rotating arm; 6. Moving seat; 7. Connecting rod; 8. Spline sleeve; 9. Electric push rod; 10. Spline shaft; 11. Motor; 12. Reducer; 13. Locking screw; 14. Adjustment bracket; 15. Base; 16. Long sliding hole; 17. Reversing delay switch 1; 18. Reversing switch 2; 19. Thread hole; 20. Track 1; 21. Track 2; 22. Track 3; DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 4 As shown, this embodiment proposes a stirring device for an oil bath pot, including an oil bath pot 1 and a motor 11, the motor 11 is fixedly connected to an adjustment frame 14, the rotating shaft of the motor 11 is connected to a spline shaft 10, and the motor 11 and the spline shaft 10 are transitionally connected by a reducer 12, which can achieve a low rotation speed and make the stirring device work better.

[0029] The adjustment frame 14 also includes a base 15. The adjustment frame 14 and the base 15 are provided with locking screws 13. When the stirring device cooperates with the oil bath pot 1 and the experimental container, the height of the adjustment frame 14 can be adjusted by the locking screws 13, which expands the application range of the stirring device and reduces the cost.

[0030] The spline shaft 10 is slidably connected to the spline sleeve 8, and the lower end of the spline shaft 10 is fixedly connected to the rotating arm 5. The rotating arm 5 is provided with a long sliding hole 16, and the long sliding hole 16 is slidably connected to the moving seat 6. The lower end of the moving seat 6 is connected to the stirring rod 2, and the upper end of the moving seat 6 is hinged to the connecting rod 7. The other end of the connecting rod 7 is hinged to the lower end of the spline sleeve 8. The spline sleeve 8 is connected to the lifting component. The lifting component adopts an electric push rod 9. The upper end of the electric push rod 9 is connected to the spline sleeve 8, and the lower end of the electric push rod 9 is fixedly connected to the adjustment frame 14. The spline sleeve 8 is driven to rise and fall reciprocatingly through the work of the electric push rod 9, so that the moving seat 6 can reciprocate along the long sliding hole 16 under the action of the connecting rod 7, so as to adjust the position of the stirring rod 2, realize uniform stirring in the oil bath pot 1, and enable the oil bath pot 1 to better realize temperature control.

[0031] When using the stirring device, the experimental container is placed in the oil bath 1, the rotating shaft of the motor 11 is concentric with the experimental container, the position of the stirring rod 2 is adjusted, the motor 11 drives the rotating arm 5 to perform circular uniform motion through the spline shaft 10, the rotating arm 5 drives the moving seat 6 to rotate, the moving seat 6 drives the stirring rod 2 to perform circular uniform motion, the motion trajectory of the stirring rod 2 forms a trajectory shape of trajectory three 22, thereby achieving uniform stirring of the oil bath 1.

[0032] Embodiment 2:

[0033] This embodiment adds obstacle avoidance measures on the basis of embodiment 1 to avoid the risk of collision between the stirring device and the suspended bracket 3 when the experimental container needs to be fixed by the suspended bracket 3. For details, please refer to Figures 1 to 4 The oil bath pot 1 is fixedly connected to the suspended bracket 3, and a switch seat 4 is provided on the suspended bracket 3. The switch seat 4 corresponds to the movable seat 6. When the movable seat 6 drives the stirring rod 2 to rotate, the motor 11 is controlled with the cooperation of the switch seat 4, so that the stirring device can effectively avoid colliding with the suspended bracket 3 during operation.

[0034] A reversing delay switch 17 is provided on one side of the switch seat 4, and a reversing switch 2 18 is provided on the other side of the switch seat 4. The reversing delay switch 17 can be used to control the electric push rod 9 when the stirring device moves in the reverse direction. When the stirring device moves in the reverse direction, the moving seat 6 can control the electric push rod 9 to change the stirring area of ​​the stirring rod 2, so as to better stir the oil bath pot 1 and make the temperature uniform and stable.

[0035] The suspended bracket 3 is provided with a plurality of groups of thread holes 19 , and the thread holes 19 at different positions can better fix the switch base 4 , realize the stirring process adapted to different position states of the movable base 6 , and better cooperate with the movable base 6 to work.

[0036] Specifically, the stirring process of the stirring rod 2 is as follows:

[0037] When the stirring device is used, a suspended bracket 3 is provided, the experimental container is placed in the oil bath pot 1, the rotating shaft of the motor 11 is placed eccentrically with the experimental container, the position of the stirring rod 2 is adjusted, and the motor 11 drives the rotating arm 5 to perform circular uniform motion through the spline shaft 10, the rotating arm 5 drives the moving seat 6 to rotate, and the moving seat 6 drives the stirring rod 2 to rotate.

[0038] Case 1: The stirring rod 2 moves clockwise to form a track 3 22 and contacts the reversing delay switch 17 on the switch seat 4:

[0039] At this time, the moving seat 6 drives the stirring rod 2 to move to the switch seat 4 under the action of the motor 11. At this time, the moving seat 6 contacts the reversing delay switch 17, so that the reversing delay switch 17 works. Under the action of the reversing delay switch 17, the motor 11 rotates in the opposite direction, so that the moving seat 6 drives the stirring rod 2 to change from the original clockwise motion to the counterclockwise motion, avoiding collision with the suspended bracket 3.

[0040] Case 2: After the stirring rod 2 is reversed under the action of the reversing delay switch 17, the stirring rod 2 moves counterclockwise to form a track 1 20 and a track 2 21:

[0041] When the reversing delay switch 17 is working and the motor 11 works in the reverse direction, the electric push rod 9 is also working, so that the electric push rod 9 pushes the spline sleeve 8 to move upward, and drives the movable seat to move along the long slide hole 16 of the rotating arm 5 through the hinged connecting rod 7, so that the stirring rotation radius of the stirring rod 2 changes, forming a track 20. When the stirring rod 2 moves to point A, the delay function of the reversing delay switch 17 stops the electric push rod 9 from pushing the spline sleeve 8 and resets the electric push rod 9. When the electric push rod 9 is reset, the stirring rod 2 is driven by the movable seat 6 to gradually return to the initial stirring rotation radius, forming a track 21, so that when the stirring rod 2 moves in the reverse direction, the active position of the stirring rod 2 is adjusted, the stirring range of the oil bath pot 1 is expanded, the temperature is made more uniform and stable, and the experimental temperature is conveniently controlled.

[0042] When the moving seat moves to the switch seat 4 area, it contacts the reversing switch 18 on the switch seat 4, causing the reversing switch 18 to work. Under the action of the reversing switch 18, the motor 11 rotates in the opposite direction, so that the moving seat 6 drives the stirring rod 2 to change from counterclockwise motion to clockwise motion, avoiding collision with the suspended bracket 3.

[0043] At this time, because the reversing switch 2 18 has no delay function, the electric push rod 9 does not work, so that the stirring rod 2 remains in position, repeating the motion state of the first situation for a while. This device can better achieve stirring of the oil bath pot 1, achieve uniform temperature, and achieve accurate control of the experimental temperature.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stirring device for an oil bath pot, comprising an oil bath pot (1) and a motor (11), characterized in that: The rotating shaft of the motor (11) is connected to the spline shaft (10), the spline shaft (10) is slidably connected to the spline sleeve (8), the lower end of the spline shaft (10) is fixedly connected to the rotating arm (5), the rotating arm (5) is provided with a long sliding hole (16), the long sliding hole (16) is slidably connected to the moving seat (6), the upper end of the moving seat (6) is hinged with a connecting rod (7), the other end of the connecting rod (7) is hinged to the lower end of the spline sleeve (8), the spline sleeve (8) is connected to a lifting component, and the lower end of the moving seat (6) is connected to a stirring rod (2).

2. The stirring device for an oil bath pot according to claim 1, characterized in that: The oil bath pot (1) is fixedly connected to a suspended bracket (3), and a switch seat (4) is provided on the suspended bracket (3), wherein the position of the switch seat (4) corresponds to the movable seat (6).

3. The stirring device for an oil bath pot according to claim 2, characterized in that: A first reversing delay switch (17) is provided on one side of the switch seat (4), and a second reversing switch (18) is provided on the other side of the switch seat (4).

4. The stirring device for an oil bath pot according to claim 1, characterized in that: The motor (11) is fixedly connected to an adjustment frame (14).

5. The stirring device for an oil bath pot according to claim 4, characterized in that: The lifting component adopts an electric push rod (9), the upper end of the electric push rod (9) is connected to the spline sleeve (8), and the lower end of the electric push rod (9) is fixedly connected to the adjustment frame (14).

6. The stirring device for an oil bath pot according to claim 1, characterized in that: The motor (11) and the spline shaft (10) are transitionally connected using a reducer (12).

7. The stirring device for an oil bath pot according to claim 4, characterized in that: The adjustment frame (14) further comprises a frame body and a base (15), and a locking screw (13) is arranged between the frame body and the base (15).

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