CN209485479U - A kind of liquid level detector being mounted on thermostat - Google Patents
A kind of liquid level detector being mounted on thermostat Download PDFInfo
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- CN209485479U CN209485479U CN201920320098.7U CN201920320098U CN209485479U CN 209485479 U CN209485479 U CN 209485479U CN 201920320098 U CN201920320098 U CN 201920320098U CN 209485479 U CN209485479 U CN 209485479U
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Abstract
The utility model provides a kind of liquid level detector being mounted on thermostat, and the liquid level detector includes level detection unit, the connected unit with inner cavity and fixed plate, and the level detection unit and connected unit are each attached in fixed plate；Intercommunicating pore is equipped in the constant temperature groove sidewall at position corresponding with liquid level in the thermostat；One end of the connected unit is sealedly connected in the intercommunicating pore and the inner cavity of the connected unit is connected with the inner cavity of the thermostat.This, which is mounted on the liquid level detector on thermostat, can easily detect the liquid level of medium in thermostat, and it issues liquid level and determines signal, and liquid level detector and thermostat can each self-sustaining independence and structural integrities, it is not only easy to install and use, it can also dismantle at any time and carry out clean and maintenance or fault detection.
Description
Technical field
The utility model relates to level detection fields, more particularly to a kind of level detection being mounted on thermostat
Device.
Background technique
Currently, thermostat is all widely used in all kinds of analysis instruments.The medium filled inside thermostat is only
Only play the role of conducting heat, performance itself is stablized, and not volatile, in normal working conditions, the consumption of medium is almost
It can be ignored.Therefore, such device often neglects the detection and liquid level detection of medium.But thermostat is at work to Jie
The number of the amount of matter is that there are strict requirements, such as conventional portable thermostat regulation medium liquid level cannot be below working plate
30mm, MS_2080 biochemical analysis system even then provide that liquid level is fixed value in thermostat and height error is less than 1mm.
In daily maintenance maintenance, thermostat needs to add after cleaning medium again, and newly added medium liquid level needs to detect；Work
Before, need first to check potential faults, the actual liquid level of medium is also required to detect in thermostat；In work, to make sample to be tested
Originally it can be uniformly heated and be had preferable consistency, need to guarantee that liquid level is maintained at certain height in thermostat, it is permanent
The liquid level of medium is with greater need for detection in warm slot.The liquid level of medium is both needed to staff's inspection and inspection in current most thermostat
It surveys, increases the workload of staff, check that the working performance not in place that will affect thermostat results even in thermostat damage.
State knows that innings patent network discloses the utility model patent of Patent No. ZL201620214633.7, which disclose
It is a kind of to detect and add the integrated device of medium, it can solve the above problem.The detection and the addition integrated device of medium
In contain thermostat and fluid level controller, wherein the fluid level controller is placed in inside thermostat, also set inside controller
There is alarm, can play the role of monitoring medium in slot.But this detection and the addition integrated device of medium have following defect:
Since the fluid level controller in the device is located inside thermostat, and general thermostat is made as to obtain consistency of performance
One enclosure space, if in this way, be located at thermostat inside fluid level controller break down, be not easy to find in time, and
Also it is not easy detachable maintaining, daily maintenance also becomes problem.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of liquid level detector being mounted on thermostat, should
The liquid level detector being mounted on thermostat can easily detect the liquid level of medium in thermostat, and issue liquid level and sentence
Determine signal.This is mounted in the liquid level detector on thermostat, and liquid level detector and thermostat can each self-sustaining independences
It is not only easy to install and use with structural integrity, it can also dismantle at any time and carry out clean and maintenance or fault detection.
The technical solution of the utility model is to provide a kind of liquid level detector being mounted on thermostat, described
Liquid level detector include level detection unit, the connected unit with inner cavity and fixed plate, the level detection unit and
Connected unit is each attached in fixed plate；It is set at position corresponding with liquid level in the thermostat in the constant temperature groove sidewall
There is intercommunicating pore；One end of the connected unit be sealedly connected in the intercommunicating pore and the inner cavity of the connected unit with it is described
The inner cavity of thermostat be connected.
After using the above structure, the liquid level detector being mounted on thermostat of the utility model, with prior art phase
Than having the advantage that
The liquid level detector being mounted on thermostat of the utility model, due to thermostat inner cavity and the connected unit
Inner cavity be connected, then connected unit inner cavity is identical as the liquid level of thermostat inner cavity, level detection unit by determine connect
Liquid level in logical unit inner cavity can easily detect the liquid level in thermostat.In addition, liquid level detector with
Each self-sustaining independence of thermostat and structural integrity, it is easy to install and use, it can dismantle at any time and carry out clean and maintenance or fault detection.
As an improvement, the level detection unit includes probe and liquid level determines controller, the probe is through company
The cavity wall of logical unit is inserted in the inner cavity of connected unit, which is used to detect the liquid level in connected unit inner cavity, and the spy
Needle determines that controller is electrically connected with the liquid level.The liquid level determines that controller is powered to probe, receives probe feedback
Electric signal determines the liquid level in connected unit inner cavity, and exports liquid level and determine electric signal for functions expanding application.
As an improvement, the level detection unit further includes conductive plate, it is single that the conductive plate is fixed on the connection
On the outer wall of member, and the conductive plate determines that controller is electrically connected with the liquid level；The probe is mounted on the conduction
On plate and probe and conductive plate form good electrical contact.In this way, probe is only contacted with conductive plate, cleaning can be freely removed
Wiping is to keep good electric conductivity.
As an improvement, the conductive plate is equipped with threaded hole, the conductive plate is equipped with threaded hole, the probe
Lower part there is the lower thread of external screw thread and the probe to be connected in the threaded hole of the conductive plate, guarantee probe and conductive plate electricity
Contact is good.
As an improvement, the table top of protrusion is arranged at the probe top, the table top limit is in the outer of the conductive plate
Side.
As an improvement, the level detection unit further includes liquid level alarm, which is fixed on described
In fixed plate, and the liquid level alarm determines that controller is electrically connected with liquid level.The liquid level alarm can be indicator light.Liquid
Level alarm receives liquid level and determines that the liquid level of controller output determines electric signal, is warned according to rule, reminds staff timely
Processing.
As an improvement, the connected unit includes connection connector and the liquid level linker made of isolation material；It is described
One end of connection connector connect with liquid level linker lower end, the other end is connect with constant temperature groove sidewall intercommunicating pore.Liquid level linker
It is separated with connector is connected to, standard fitting can be used, facilitate Parts Purchasing and assembly.
As an improvement, the connection connector is angle coupling, the upper end and liquid level linker lower end of the angle coupling connect
It connects, the lower end of the angle coupling is connect with constant temperature groove sidewall intercommunicating pore, the liquid level linker inner cavity and the thermostat
Inner cavity is connected.The angle coupling can be standard component.
As an improvement, the fixation plate shape is L-type, the level detection unit and connected unit are separately mounted to
On the outer wall of two right-angle surfaces of L-type fixed plate.In this way, the space that the liquid level detector occupies can be reduced, entirely answering
With there is better adaptability in system.
As an improvement, the lower surface of the connected unit inner cavity is than providing that liquid level is 5.5-7.5mm low in thermostat.Connection
Liquid medium in unit inner cavity is served only for level sensing, for the liquid depth that probe touches, i.e. connected unit inner cavity
The difference in height of lower surface and regulation liquid level, as long as can guarantee that the liquid stablizes conduction charge as conducting medium, the height
Difference is smaller, and the influence to thermostat performance is with regard to smaller.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the liquid level detector being mounted on thermostat of the utility model.
Fig. 2 is the structural assembly diagram of Fig. 1 liquid level detector.
Fig. 3 is a kind of electricity that liquid level determines controller in the liquid level detector being mounted on thermostat of the utility model
Lu Tu.
Fig. 1 with shown in Fig. 2: 1, right angle is connected to connector, 2, liquid level linker, 3, fixed plate, 4, probe, 5, conductive
Plate, 6, liquid level alarm, 7, liquid level judgement controller.
Specific embodiment
In order to so more preferable that understand the application, various aspects of the reference attached drawing to the application are made into more detailed description.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Attached drawing is merely illustrative and non-critical in proportion
It draws.
It will also be appreciated that term "comprising" " comprising ", " having ", "comprising", " including ", when making in the present specification
Used time indicates that there are the feature, entirety, step, operations, elements, and/or components, but does not preclude the presence or addition of one
Or other multiple features, entirety, step, step, operation, component, assembly unit and/or their combination.In addition, ought such as " ... extremely
Few one " statement when appearing in after the list of listed feature, feature listed by modification is entire, rather than the list in modification list
Only element.
As shown in Figure 1, the liquid level detector in the liquid level detector being mounted on thermostat of the utility model, packet
It includes right angle connection connector 1, liquid level linker 2, fixed plate 3, probe 4, conductive plate 5, liquid level alarm 6 and liquid level and determines controller
7。
Liquid level determines that controller 7 is electrically connected with liquid level alarm 6 and conductive plate 5, and conductive plate 5 is electrically connected with probe 4.
Fixed plate 3 is the construction of inverted L shape, and liquid level linker 2 is fixed on the level right angle of fixed plate 3 by screw or bolt
On the outer wall in face；Liquid level determines that controller 7 is fixed on the outer wall of vertical right-angle surface of fixed plate 3 by screw or bolt；Liquid
Level alarm 6 penetrates 3 level right angle face of fixed plate and is fastened by the nut back on 3 right-angle surface inner wall of fixed plate.
Conductive plate 5 with threaded hole is fixed on the upper surface of liquid level linker 2 by screw or bolt.
External screw thread is arranged at 4 lower part of probe, which matches with the screw thread pore size of conductive plate 5, probe 4 and conductive plate 5
Be connected through a screw thread and realize good electrical contact；4 top of probe has the table top of protrusion to be connected with external screw thread, the table top of the protrusion
One end of probe 4 is limited in the top of conductive plate 5.
Right angle is connected to 1 upper end of connector and the lower surface of liquid level linker 2 and bonds connection, the company of the other end and constant temperature groove sidewall
Through-hole is connected by silicone-rubber seals, and 2 inner cavity of liquid level linker, right angle connection connector 1 form one with thermostat inner cavity and be connected to
Device, and the lower surface of 2 inner cavity of liquid level linker is than providing that liquid level is 6.5mm low in thermostat.
It is PP that right angle, which is connected to connector 1 and the material of liquid level linker 2,.The material of fixed plate 3 is stainless steel.
As shown in figure 3, the liquid level in the liquid level detector being mounted on thermostat of the utility model determines controller,
No. 1 pin of six foot rectangle contact pin connector J3 connects the one end resistance R1, one end of resistance R6 and a probe simultaneously, and the 2 of J3
Number pin connects another probe and is grounded；The other end of resistance R1 connects 5V voltage；Voltage comparator LM393DRG3 power supply draws
Foot connects 5V voltage, No. 4 pin ground connection, and No. 2 pins are the other end that negative input end is connected to resistance R6, and No. 3 pins are positive input
One end of connecting resistance R2 and one end of R3, another termination 5V voltage of R2, the R3 other end are grounded simultaneously at end, No. 1 pin connecting resistance
One end of R7 and one end of R10；The base stage of the triode Q1 of another termination MMBT4124 model of R7, the collector of Q1 connect four feet
No. 2 pins of rectangle contact pin connector J2；No. 2 pins of J2 connect one end of R9 simultaneously, and the other end of R9 connects 5V voltage；R10
Another termination MMBT4124 model triode Q2 base stage, the collector of Q2 connects No. 2 of two foot rectangle contact pin connector J4
Pin.Four foot rectangle contact pin connector J2 are that liquid level determines controller power supply.2 pins of two foot rectangle contact pin connector J4 point
The two poles of the earth of indicator light are not connect.
When two probes do not touch the i.e. no current path formation of liquid medium simultaneously, No. 1 pin of J3 and No. 2
It is equivalent to open circuit between pin, No. 2 negative input end voltages of comparator LM393DRG3 are close to 5V, then comparator LM393DRG3
No. 1 pin output is low level signal, and triode Q1 and Q2 are not turned on, and No. 2 pins of J2 export high level signal, J4's
Breaking between No. 1 pin and No. 2 pins, the indicator light of J4 connection is the state gone out；When two probes touch liquid shape simultaneously
When at current path, resistance can be less than 400K between No. 1 pin and No. 2 pins of J3, and No. 2 of comparator LM393DRG3 are born defeated
Enter to hold voltage to be less than 2.5V, then comparator LM393DRG3 No. 1 pin output is high level signal, and triode Q1 and Q2 are led
Logical, No. 2 pins of J2 export low level signal, are connected between No. 1 pin and No. 2 pins of J4, the indicator light that J4 is connected is
Bright state.
The working principle of the liquid level detector being mounted on thermostat of the utility model is as follows: when the liquid in thermostat
After body medium enters liquid level linker by connection connector, liquid level linker, connection connector and thermostat form a linker,
Liquid level linker is identical as the liquid level in thermostat；Liquid level determines that controller is powered to probe, and two probes are inserted into liquid level
Liquid level is detected in linker；When probe lower end is not exposed to liquid medium, open circuit, liquid are equivalent between two probes
Position judgement controller exports high level signal by No. 2 feet of J2 outward, while the liquid level alarm circuit that J4 is connected is not led
It is logical；When two probe lower ends touch liquid medium simultaneously, a conductive path is formed between two probes, liquid level determines control
Device processed exports low level signal, while the liquid level alarm circuit conducting that J4 is connected by No. 2 feet of J2 outward；Liquid level warning
Device is alarmed according to rule.
Any one building block can remove in the liquid level detector being mounted on thermostat of the utility model
It is maintained or is overhauled, the whole thermostat that can also separate carries out maintenance washes or maintenance.
Claims (10)
1. a kind of liquid level detector being mounted on thermostat, which is characterized in that the liquid level detector includes liquid level
Probe unit, the connected unit with inner cavity and fixed plate, the level detection unit and connected unit are each attached to fixed plate
On；It is equipped at position corresponding with liquid level in the thermostat in the constant temperature groove sidewall and the liquid level detector is installed
Intercommunicating pore, one end of the connected unit is sealedly connected in the intercommunicating pore and the inner cavity of the connected unit and described
The inner cavity of thermostat is connected.
2. the liquid level detector according to claim 1 being mounted on thermostat, which is characterized in that the liquid level is visited
Surveying unit includes that probe and liquid level determine that controller, the probe are inserted in the interior of connected unit through the cavity wall of connected unit
In chamber, which is used to detect the liquid level in connected unit inner cavity, and the probe determines that controller is electrically connected with the liquid level.
3. the liquid level detector according to claim 2 being mounted on thermostat, which is characterized in that the liquid level is visited
Surveying unit further includes conductive plate, and the conductive plate is fixed on the outer wall of the connected unit, and the conductive plate and described
Liquid level determines controller electrical connection；The probe is mounted on the conductive plate.
4. the liquid level detector according to claim 3 being mounted on thermostat, which is characterized in that the conductive plate
It is equipped with threaded hole, the screw thread that the lower part of the probe has the lower thread of external screw thread and the probe to be connected to the conductive plate
In hole.
5. being mounted on the liquid level detector on thermostat according to claim 3 to 4 any one, which is characterized in that
The table top of protrusion is arranged at the probe top, and the table top limits in the outside of the conductive plate.
6. the liquid level detector according to claim 2 being mounted on thermostat, which is characterized in that the liquid level is visited
Surveying unit further includes liquid level alarm, which is fixed in the fixed plate, and the liquid level alarm and liquid level
Determine controller electrical connection.
7. the liquid level detector according to claim 1 being mounted on thermostat, which is characterized in that the connection list
Member includes connection connector and the liquid level linker made of isolation material；Under one end and liquid level linker of the connection connector
End connection, the other end are connect with the intercommunicating pore in the constant temperature groove sidewall.
8. the liquid level detector according to claim 7 being mounted on thermostat, which is characterized in that the connection connects
Head is angle coupling, and the upper end of the angle coupling is connect with liquid level linker lower end, the lower end of the angle coupling and the perseverance
Intercommunicating pore connection in warm groove sidewall, the liquid level linker inner cavity is connected with the thermostat inner cavity.
9. the liquid level detector according to claim 1 being mounted on thermostat, which is characterized in that the fixed plate
Shape is L-type, and the level detection unit and connected unit are separately mounted to the outer wall of two right-angle surfaces of L-type fixed plate
On.
10. the liquid level detector according to claim 1 being mounted on thermostat, which is characterized in that the connection
The lower surface of unit inner cavity is than providing that liquid level is 5.5-7.5mm low in thermostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920320098.7U CN209485479U (en) | 2019-03-14 | 2019-03-14 | A kind of liquid level detector being mounted on thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920320098.7U CN209485479U (en) | 2019-03-14 | 2019-03-14 | A kind of liquid level detector being mounted on thermostat |
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| Publication Number | Publication Date |
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| CN209485479U true CN209485479U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155230A (en) * | 2021-04-01 | 2021-07-23 | 英顾环境技术(上海)有限公司 | Liquid level detection antifouling device for evaporation tank |
-
2019
- 2019-03-14 CN CN201920320098.7U patent/CN209485479U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155230A (en) * | 2021-04-01 | 2021-07-23 | 英顾环境技术(上海)有限公司 | Liquid level detection antifouling device for evaporation tank |
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