Magnetic heating and stirring device for sewage sample

Abstract

The sewage sample magnetic force type heating and stirring device comprises a machine box, a heat conduction base, a heating wire, an electric rotary table, a magnet, a stirrer and a viscosity detection mechanism, and the viscosity detection mechanism comprises an electric sliding table, a movable plate, an electric push rod, a lifting plate, a pressure sensor, a pressure spring, an insertion rod and a main control unit. The containing container is placed on the heat conduction base, then the electric sliding table and the electric push rod drive the insertion rod to descend into a sewage sample, the sewage sample generates resistance to the insertion rod, the pressure generated by the pressure spring to the pressure sensor is changed, and the main control unit can evaluate the viscosity of sewage according to the change of the pressure. After the stirrer is placed in the container, the main control unit can start the heating wire and the electric turntable, and the electric turntable rotates at a corresponding rotating speed, so that the stirrer is driven by the magnet to rotate, and under the heating of the heating wire, non-contact stirring of a sewage sample is realized, the stirring effect is improved, and pollution and loss are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage detection technical field, especially sewage sample magnetic formula heating stirring device. BACKGROUND

[0002] In the field of environmental protection, water quality monitoring and chemical analysis, the treatment and analysis of sewage samples are crucial links. The traditional sewage sample stirring method mainly uses mechanical stirrers. Such stirrers are usually directly driven by a motor to rotate the stirring paddle in the sewage sample. However, the mechanical stirrer has many limitations. The stirring paddle and the motor are connected mechanically. During long-term use, the stirring paddle is easily damaged due to wear, corrosion, and entanglement with impurities in the sample. This not only increases the maintenance cost and replacement frequency of the equipment, but also may cause uneven stirring and affect the accuracy of experimental or processing results after the stirring paddle is damaged. In order to achieve non-contact stirring, a magnetic stirrer is created. The stirring paddle in the liquid is driven to rotate by an external magnetic field, thereby achieving uniform stirring of the liquid. This can avoid the pollution and wear problems that may be caused by traditional mechanical stirring. However, the viscosity of different sewage samples may differ. When dealing with sewage with different viscosities, different speeds are often required. However, the current magnetic stirrer does not have a viscosity detection mechanism. It is often based on the experience of the tester, which cannot guarantee the correction effect. SUMMARY

[0003] Therefore, the utility model provides a sewage sample magnetic formula heating stirring device. After estimating the viscosity of the sewage sample, the electric turntable is driven to rotate at the corresponding speed, thereby improving the stirring effect of the sewage sample.

[0004] The technical solution of the utility model is as follows:

[0005] The utility model provides a sewage sample magnetic heating stirring device, including the machine case, heat conduction base, heating wire, electric rotating table, magnet, stirring and viscidity detection mechanism, the top of machine case is provided with stirring cavity, heat conduction base sets up in stirring cavity, heating wire sets up in the top surface in heat conduction base, electric rotating table sets up in the bottom surface in heat conduction base, magnet sets up on the rotation surface of electric rotating table, stirring is used for putting into the sewage sample holding container, viscidity detection mechanism includes electric sliding table, moving plate, electric push rod, lifting plate, pressure sensor, pressure spring, insertion rod and main control unit, electric sliding table is relatively arranged in the inboard wall of stirring cavity, the both sides of moving plate are connected with the mover side wall of electric sliding table, electric push rod sets up in moving plate bottom surface, and its output shaft is connected with lifting plate top surface, pressure sensor sets up in lifting plate bottom surface, the top end of pressure spring is connected with pressure sensor, and its bottom end is connected with the top end of insertion rod, heat conduction base is located below the movement path of insertion rod, and main control unit sets up in stirring cavity and is connected with heating wire, electric rotating table, electric sliding table, electric push rod and pressure sensor electricity respectively.

[0006] Preferably, it further comprises a control panel arranged on the outer wall of the machine case, and the main control unit is electrically connected with the control panel.

[0007] Preferably, the viscidity detection mechanism further comprises a guide rod and a mounting plate, the mounting plate is arranged on the outer wall of the insertion rod, and the lifting plate is provided with a through hole, the bottom end of the guide rod is connected with the bottom surface of the mounting plate, and the top end of the guide rod is located in the through hole.

[0008] Preferably, the top surface of the heat conduction base is provided with a recess, the recess is used for placing the sewage sample holding container, and the heating wire is located below the recess.

[0009] Preferably, the recess is provided with a clamping plate opposite to each other, and the clamping plate is connected with the inner wall of the recess through a clamping spring.

[0010] Preferably, the viscidity detection mechanism further comprises a cleaning cylinder and a sponge, the cleaning cylinder is arranged in the stirring cavity, the sponge is arranged in the cleaning cylinder, and the cleaning cylinder is located below the movement path of the insertion rod.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] ①The heat conduction base is arranged in the stirring cavity, the container containing the sewage sample can be placed on the heat conduction base, and after the stirring rod is placed in the container, the heating wire and the electric rotating table are started, the heating wire can heat the container and the sewage sample in the container, and the electric rotating table can drive the stirring rod to rotate through the magnet, so that the magnetic stirring of the sewage sample is realized, and the pollution and wear problems caused by the non-contact mode can be avoided.

[0013] Before stirring, the insertion rod is moved above the container by the electric sliding table, then the electric push rod drives the insertion rod to slowly descend and insert into the sewage sample through the lifting plate, the sewage sample generates resistance to the descent of the insertion rod, the pressure spring changes the pressure value of the pressure sensor, the main control unit can estimate the viscosity of the sewage sample according to the change of the pressure value, so as to drive the electric turntable to rotate at different speeds, thereby improving the efficiency of sewage stirring. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only preferred embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 It is a structural schematic view of the sewage sample magnetic heating and stirring device of the present application.

[0016] Fig. 2 It is a structural schematic view of the viscosity detection mechanism of the sewage sample magnetic heating and stirring device of the present application.

[0017] Fig. 3 It is a structural schematic view of the heat-conducting base of the sewage sample magnetic heating and stirring device of the present application.

[0018] In the figure, 1, case; 2, heat-conducting base; 3, heating wire; 4, electric turntable; 5, magnet; 6, stirring sub; 7, stirring cavity; 8, electric sliding table; 9, moving plate; 10, electric push rod; 11, lifting plate; 12, pressure sensor; 13, pressure spring; 14, insertion rod; 15, main control unit; 16, control panel; 17, guide rod; 18, mounting plate; 19, through hole; 20, recess; 21, clamping plate; 22, clamping spring; 23, cleaning cylinder; 24, sponge. DETAILED DESCRIPTION

[0019] In order to better understand the technical content of the present application, a specific embodiment is provided below, and the present application will be further described in combination with the drawings.

[0020] Referring to Figs. 1 to 3The utility model provides a sewage sample magnetic formula heating stirring device, including case 1, heat conducting base 2, heating wire 3, electric rotary table 4, magnet 5, stirring 6 and viscidity detection mechanism, the top of case 1 is provided with stirring cavity 7, heat conducting base 2 sets up in stirring cavity 7, heating wire 3 sets up in the inner top surface of heat conducting base 2, electric rotary table 4 sets up in the inner bottom surface of heat conducting base 2, magnet 5 sets up on the rotary face of electric rotary table 4, stirring 6 is used to put into the sewage sample holding container, viscidity detection mechanism includes electric sliding table 8, moving plate 9, electric push rod 10, lifting plate 11, pressure sensor 12, pressure spring 13, insert rod 14 and main control unit 15, electric sliding table 8 is relatively arranged in the inside wall of stirring cavity 7, moving plate 9 both sides with the mover side wall connection of electric sliding table 8, electric push rod 10 sets up in moving plate 9 bottom, and its output shaft is connected with lifting plate 11 top, pressure sensor 12 sets up in lifting plate 11 bottom, pressure spring 13 top end is connected with pressure sensor 12, and its bottom end is connected with insert rod 14 top end, heat conducting base 2 is located under the movement path of insert rod 14, main control unit 15 sets up in stirring cavity 7, and is connected with heating wire 3, electric rotary table 4, electric sliding table 8, electric push rod 10 and pressure sensor 12 electricity respectively.

[0021] After putting the sewage sample into the holding container, the container is directly placed on the heat conducting base 2, and the stirring rod 6 is directly put into the sewage sample, then the heating wire 3 and the electric rotary table 4 can be turned on. The heating wire 3 generates heat and transmits the heat to the container through the heat conducting base 2, thereby heating the sewage sample. When the electric rotary table 4 is turned on, it drives the magnet 5 to rotate, so that the magnetic field generated by the magnet 5 changes continuously. Under the action of the magnetic field, the stirring rod 6 rotates in the container, thereby stirring the sewage sample. The non-contact stirring structure can avoid pollution and wear.

[0022] The viscidity of different sewage samples is different. For sewage with different viscidity, the speed of the electric rotary table 4 needs to be differentiated. Before stirring, the insert rod 14 is moved above the holding container by the electric sliding table 8, then the lifting plate 11 and the insert rod 14 are lowered by the electric rotary table 4, so that the insert rod 14 can extend into the sewage sample. The sewage sample generates resistance to the insert rod 14, so that the pressure data of the pressure sensor 12 changes. The main control unit 15 can convert the change of the pressure data into the viscidity of the sewage sample. According to the different viscidity, the electric rotary table 4 is controlled to rotate at different speeds, thereby improving the stirring effect of the sewage and avoiding the uneven stirring of thick sewage at low speed. The pressure sensor 12 of the utility model is PTC602W, and the main control unit 15 uses an STM32 series single-chip microcomputer.

[0023] Preferably, the control panel 16 is arranged on the outer wall of the cabinet 1, and the main control unit 15 is electrically connected with the control panel 16.

[0024] The control panel 16 can be used to send control commands to the main control unit 15, such as manually adjusting the stirring speed and the heating temperature.

[0025] Preferably, the viscosity detection mechanism further comprises a guide rod 17 and a mounting plate 18, the mounting plate 18 is arranged on the outer wall of the insertion rod 14, the lifting plate 11 is provided with a through hole 19, the bottom end of the guide rod 17 is connected with the bottom surface of the mounting plate 18, and the top end of the guide rod 17 is located in the through hole 19.

[0026] When the insertion rod 14 is subjected to the resistance of the sewage sample, the insertion rod 14 moves close to the lifting plate 11, the guide rod 17 on the mounting plate 18 can move along the through hole 19, the guide rod 17 is limited through the through hole 19, and then the insertion rod 14 is further limited, so that the pressure spring 13 is prevented from being irregularly deformed.

[0027] Preferably, the top surface of the heat-conducting base 2 is provided with a recess 20, the recess 20 is used for placing a sewage sample container, the heating wire 3 is located below the recess 20, the recess 20 is relatively provided with a clamping plate 21, and the clamping plate 21 is connected with the inner wall of the recess 20 through a clamping spring 22.

[0028] After the sewage sample container is placed in the recess 20, the clamping plate 21 is in contact with the outer wall of the sewage sample container, and the clamping plate 21 can fix the sewage sample container under the action of the clamping spring 22, so that the sewage sample container is prevented from shaking during stirring.

[0029] Preferably, the viscosity detection mechanism further comprises a cleaning cylinder 23 and a sponge 24, the cleaning cylinder 23 is arranged in the stirring cavity 7, the sponge 24 is arranged in the cleaning cylinder 23, and the cleaning cylinder 23 is located below the movement path of the insertion rod 14.

[0030] After the insertion rod 14 is inserted into the sewage sample, some sewage impurities are adhered to the outer wall of the insertion rod 14, in order to avoid affecting the measurement result during multiple measurements or subsequent measurements, the cleaning cylinder 23 is arranged in the stirring cavity 7, the insertion rod 14 can be moved above the cleaning cylinder 23 and inserted into the cleaning cylinder 23, and then the sponge 24 is used for cleaning.

[0031] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sewage sample magnetic heating stirring device, characterized in that, Including the chassis, heat-conducting base, heating wire, electric rotary table, magnet, stirrer and viscosity detection mechanism, the top of the chassis is provided with stirring cavity, the heat-conducting base is arranged in stirring cavity, the heating wire is arranged in the inner top surface of heat-conducting base, the electric rotary table is arranged in the inner bottom surface of heat-conducting base, the magnet is arranged on the rotating surface of electric rotary table, the stirrer is used to put into sewage sample container;The viscosity detection mechanism includes electric sliding table, moving plate, electric push rod, lifting plate, pressure sensor, pressure spring, insertion rod and main control unit, the electric sliding table is relatively arranged on the inner side wall of stirring cavity, the moving plate is connected with the mover side wall of electric sliding table on both sides, the electric push rod is arranged on the bottom surface of moving plate, the output shaft is connected with the top surface of lifting plate, the pressure sensor is arranged on the bottom surface of lifting plate, the top end of pressure spring is connected with pressure sensor, and the bottom end is connected with the top end of insertion rod, the heat-conducting base is located below the moving path of insertion rod, and the main control unit is arranged in stirring cavity and is electrically connected with heating wire, electric rotary table, electric sliding table, electric push rod and pressure sensor.

2. The sewage sample magnetic heating and stirring device according to claim 1, characterized in that, It also includes a control panel, which is arranged on the outer side wall of the chassis, and the main control unit is electrically connected with the control panel.

3. The sewage sample magnetic heating and stirring device according to claim 1, characterized in that, The viscosity detection mechanism further includes a guide rod and a mounting plate, the mounting plate is arranged on the outer wall of the insertion rod, the lifting plate is provided with a through hole, and the bottom end of the guide rod is connected with the bottom surface of the mounting plate, and the top end is located in the through hole.

4. The sewage sample magnetic heating and stirring device according to claim 1, characterized in that, The top surface of the heat-conducting base is provided with a recess, and the recess is used for placing the sewage sample container, and the heating wire is located below the recess.

5. The sewage sample magnetic heating and stirring device according to claim 4, characterized in that, The recess is provided with clamping plates, and the clamping plates are connected with the inner wall of the recess through clamping springs.

6. The sewage sample magnetic heating and stirring device according to claim 1, characterized in that, The viscosity detection mechanism further includes a cleaning cylinder and a sponge, the cleaning cylinder is arranged in the stirring cavity, the sponge is arranged in the cleaning cylinder, and the cleaning cylinder is located below the moving path of the insertion rod.

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