CN214471202U - Flow calibration column with automatic exhaust function - Google Patents
Flow calibration column with automatic exhaust function Download PDFInfo
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- CN214471202U CN214471202U CN202120676326.1U CN202120676326U CN214471202U CN 214471202 U CN214471202 U CN 214471202U CN 202120676326 U CN202120676326 U CN 202120676326U CN 214471202 U CN214471202 U CN 214471202U
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- floater
- automatic exhaust
- calibration post
- air inlet
- outlet
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Abstract
The utility model provides a take automatic exhaust function's flow calibration post, calibration post including transparent material, calibration post upper end and lower extreme all are equipped with the connection end cover, the link of calibration post upper end is covered and is connected with the float room, float indoor chamber inner chamber lower extreme be equipped with the interface and with calibration post inner chamber intercommunication, float indoor chamber upper end is connected with the business turn over gas port, be equipped with the float that makes its superficial shutoff business turn over gas port when being full of liquid medium in the calibration post in the float room. The utility model has the advantages of automatic exhaust can be realized, the gas port can be closed in time when the post is full of liquid medium after the exhaust is accomplished.
Description
Technical Field
The utility model relates to a ball valve field, concretely relates to take flow calibration post of automatic exhaust function.
Background
The flow calibration column is also called as a flow calibration measuring barrel, is widely applied to the flow calibration of a metering pump and a dosing device, and can accurately calibrate the flow output by the metering pump.
The use method of the flow calibration column comprises the following steps: when the device is used, a medium is injected into the calibration column, the liquid level of the medium is fixed at the maximum scale of the calibration column, other inlet valves are closed, valves between the calibration column and the pump are opened, the pump can only draw the medium from the calibration column, then the pump is started for timing, the volume number of the liquid in the calibration column reduced within the set time is carefully checked to be compared with the theoretical volume number, and the precision of the pump is adjusted according to the actual situation.
However, when the existing flow calibration column is filled with a medium, the medium needs to be controlled (i.e. filled to the maximum scale), and since the liquid has surface tension, the actual indication scale of the inner wall of the flow calibration column has certain error, and the problem easily occurs during detection of different batches, so that the detection error value between different batches becomes large, which is not beneficial to accurate detection.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a can realize self-bleeding, can in time close the flow calibration post of taking the self-bleeding function of business turn over gas port when the calibration post is filled with liquid medium after the exhaust is accomplished.
Aiming at the problems, the following technical scheme is provided: the utility model provides a take automatic exhaust function's flow calibration post, includes transparent material's calibration post, calibration post outer wall is equipped with the volume sign, calibration post upper end and lower extreme all are equipped with the connection end cover, be connected with the float room on the link lid of calibration post upper end, float room inner chamber lower extreme is equipped with the interface and communicates with calibration post inner chamber, float room inner chamber upper end is connected with the business turn over gas port, the float of shutoff business turn over gas port on it is made to float when being full of liquid medium in the calibration post in the float indoor.
In the structure, the volume mark arranged on the calibration column is the actual volume which can be injected into the calibration column when the calibration column is filled with liquid medium until the air inlet and the air outlet are blocked by the floater; the liquid medium is filled into the calibration column from the connecting end cover at the lower end of the calibration column until the liquid medium supports the floater to block the air inlet and the air outlet, and at the moment, the liquid medium filling of the calibration column is finished; meanwhile, when the liquid medium of the existing calibration column is filled, the filling amount needs to be controlled according to the scales, so that the calibration column is complicated, the filling is stopped automatically by plugging the air inlet and the air outlet through the floater after the liquid medium is filled to the designed capacity, the operation difficulty is low, and the filling rapidness is ensured; after the calibration column is filled, liquid medium in the calibration column is pumped out through a pump, and the floater is separated from the air inlet and outlet along with the descending of the liquid level, so that external air enters the calibration column from the air inlet and outlet.
The utility model is further arranged that a sliding column is arranged above the butt joint port at the lower end of the inner cavity of the float chamber; the lower end of the floater is provided with a sliding hole which is matched with the sliding column to slide so that the floater still keeps sliding vertically when floating upwards and abutting against the air inlet and the air outlet.
In the structure, the sliding column is used for guiding the float to slide, so that the float is prevented from being inclined when floating upwards, and the sealing performance of the float and the air inlet and outlet port is favorably controlled when the float abuts against each other.
The utility model discloses further set up to, the traveller lower extreme is connected with the float chamber inner chamber through connecting floor.
In the structure, the connecting rib plates are uniformly distributed along the circumferential direction of the sliding column.
The utility model discloses further set up to, the float is equipped with the sealing washer that offsets sealedly with the business turn over gas port when the float come-up towards the one end of business turn over gas port.
In the structure, the sealing ring can accurately abut against the air inlet and the air outlet when the sliding column guides the floater to slide, and the sealing property is ensured.
The utility model discloses further set up to, the float is 0.5-0.8 with the proportion of liquid medium: 1.
in the structure, the floater can be ensured to float in time, the floater is abutted and sealed with the air inlet and the air outlet when the air in the floater room is exhausted, and the situation that the liquid medium enters the air inlet and the air outlet and then enters the calibration column again when the liquid medium in the calibration column is pumped out by the pump to influence the metering accuracy is avoided.
The utility model discloses further set up to, it is equipped with the internal thread hole to connect the end cover, float chamber and internal thread hole screw-thread fit.
In the structure, the connecting end cover at the lower end of the calibration column is connected with the pipeline through the internal thread hole.
The utility model discloses further set up as, the float chamber includes casing and lower casing.
The utility model discloses further set up to, go up the casing and pass through threaded connection between the casing down.
In the structure, the upper shell and the lower shell which are connected through the threads are convenient for installing the floater, and are convenient for disassembly and maintenance.
The utility model discloses further set up to, the business turn over gas port is located the casing, be located down the casing to the interface.
The utility model discloses further set up to, the internal thread hole screw thread of casing and connection end cover closes the butt joint soon down.
In the structure, the upper shell and the lower shell can be connected by adopting flanges instead of threads; the lower shell and the connecting end cover can also adopt a flange to replace the threaded connection; the connecting end cover at the lower end of the calibration column can also be connected with the pipeline by adopting a flange instead of threads.
The utility model has the advantages that: the volume mark arranged on the calibration column is the actual volume which can be injected into the calibration column when the calibration column is filled with liquid medium until the air inlet and the air outlet are blocked by the float; the liquid medium is filled into the calibration column from the connecting end cover at the lower end of the calibration column until the liquid medium supports the floater to block the air inlet and the air outlet, and at the moment, the liquid medium filling of the calibration column is finished; meanwhile, when the liquid medium of the existing calibration column is filled, the filling amount needs to be controlled according to the scales, so that the calibration column is complicated, the filling is stopped automatically by plugging the air inlet and the air outlet through the floater after the liquid medium is filled to the designed capacity, the operation difficulty is low, and the filling rapidness is ensured; after the calibration column is filled, liquid medium in the calibration column is pumped out through a pump, and the floater is separated from the air inlet and outlet along with the descending of the liquid level, so that external air enters the calibration column from the air inlet and outlet.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the full-section structure of the present invention.
Fig. 3 is a schematic view of the explosion structure of the float chamber of the present invention.
Fig. 4 is a schematic diagram of the connecting rib structure of the present invention.
The reference numbers in the figures mean: 10-calibration column; 11-connecting the end cap; 111-an internally threaded hole; 20-a float chamber; 21-pair of interfaces; 211-a spool; 212-connecting ribs; 22-inlet and outlet ports; 23-a float; 231-a slide hole; 232-sealing ring; 24-an upper housing; 25-lower shell.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, the flow calibration column with the automatic exhaust function as shown in fig. 1 to 4 includes a calibration column 10 made of transparent material, the outer wall of the calibration column 10 is provided with a volume mark, the upper end and the lower end of the calibration column 10 are both provided with a connection end cover 11, the connection end cover 11 at the upper end of the calibration column 10 is connected with a float chamber 20, the lower end of the inner cavity of the float chamber 20 is provided with a butt joint 21 and is communicated with the inner cavity of the calibration column 10, the upper end of the inner cavity of the float chamber 20 is connected with an air inlet and outlet 22, and a float 23 which enables the air inlet and outlet 22 to be sealed in a floating manner when the calibration column 10 is filled with liquid medium is arranged in the float chamber 20.
In the above structure, the volume mark set by the calibration column 10 is the actual volume which can be filled into the calibration column 10 when the calibration column 10 is filled with the liquid medium until the air inlet and outlet 22 is sealed by the float 23; the liquid medium is filled into the calibration column 10 from the connecting end cover 11 at the lower end of the calibration column 10 until the liquid medium holds the floater 23 to block the air inlet and outlet 22, at the moment, the liquid medium of the calibration column 10 is filled completely, and because the liquid medium has incompressibility, when the floater 23 blocks the air inlet and outlet 22, the volume of the liquid medium in the calibration column 10 filled each time is always fixed, so that the accuracy of the volume of the liquid medium filled in the calibration column 10 is improved, firstly, the defect that the scale display on the outer wall of the calibration column 10 has errors due to the surface tension of the liquid medium during filling is overcome, and the accumulated error generated when the liquid level height of the liquid medium in the calibration column 10 is read twice due to the error displayed on the outer wall of the calibration column 10 due to the surface tension of the liquid medium after the liquid medium in the calibration column 10 is extracted is reduced; meanwhile, when the liquid medium of the conventional calibration column 10 is filled, the filling amount needs to be controlled according to the scales, so that the calibration column is complicated, the air inlet and outlet 22 is automatically blocked by the float 23 to stop filling after the liquid medium is filled to the designed capacity, the operation difficulty is low, and the filling rapidness is ensured; after the calibration column 10 is filled, the liquid medium in the calibration column 10 is pumped out by a pump, and the float 23 is separated from the air inlet and outlet 22 along with the descending of the liquid level, so that the external air enters the calibration column 10 from the air inlet and outlet 22.
In this embodiment, a sliding column 211 is disposed above the interface 21 at the lower end of the inner cavity of the float chamber 20; the lower end of the floater 23 is provided with a sliding hole 231 which is matched with the sliding column 211 to slide so that the floater 23 keeps sliding vertically when floating upwards and abutting against the air inlet and outlet 22.
In the above configuration, the spool 211 is used to guide the float 23 to slide, thereby preventing the float 23 from being tilted when floating upward, and facilitating the control of the sealing property when the float 23 abuts against the air inlet/outlet port 22.
In this embodiment, the lower end of the sliding column 211 is connected to the inner cavity of the float chamber 20 through a connecting rib 212.
In the above structure, the connecting rib plates 212 are uniformly arranged along the circumferential direction of the sliding column 211.
In this embodiment, a seal ring 232 that seals against the air inlet/outlet port 22 when the float 23 floats is provided at one end of the float 23 facing the air inlet/outlet port 22.
In the above configuration, the seal ring 232 can accurately abut against the inlet/outlet port 22 when the spool 211 guides the float 23 to slide, and the sealing performance is ensured.
In this embodiment, the specific gravity of the float 23 to the liquid medium is 0.5 to 0.8: 1.
in the above structure, the float 23 is ensured to float in time, and the float 23 is sealed against the air inlet/outlet 22 when the air in the float chamber 20 is exhausted, so as to prevent the liquid medium from entering the air inlet/outlet 22, and thus, when the liquid medium in the calibration column 10 is pumped out, part of the liquid medium in the air inlet/outlet 22 enters the float chamber 20 again and then enters the calibration column 10 to affect the metering accuracy.
In this embodiment, the connection end cap 11 is provided with an internal threaded hole 111, and the float chamber 20 is in threaded fit with the internal threaded hole 111.
In the above structure, the connection end cap 11 at the lower end of the calibration column 10 is connected to a pipeline (not shown) through the female screw hole 111.
In this embodiment, the float chamber 20 includes an upper housing 24 and a lower housing 25.
In this embodiment, the upper housing 24 and the lower housing 25 are connected by a screw thread.
In the above structure, the upper casing 24 and the lower casing 25 which are connected by screw threads facilitate installation of the float 23 and disassembly for maintenance.
In this embodiment, the air inlet and outlet 22 is located on the upper housing 24, and the docking port 21 is located on the lower housing 25.
In this embodiment, the lower housing 25 is screwed and abutted with the internal threaded hole 111 of the connecting end cap 11.
In the above structure, the upper shell 24 and the lower shell 25 can be connected by flanges instead of threads; the lower shell 25 and the connecting end cover 11 can also be connected by flanges instead of threads; the connecting end cover 11 at the lower end of the calibration column 10 can also be connected with the pipeline by adopting a flange instead of threads.
The utility model has the advantages that: the volume mark set by the calibration column 10 is the actual volume which can be injected into the calibration column 10 when the calibration column 10 is filled with liquid medium until the air inlet 22 and the air outlet 22 are blocked by the floater 23; the liquid medium is filled into the calibration column 10 from the connecting end cover 11 at the lower end of the calibration column 10 until the liquid medium holds the floater 23 to block the air inlet and outlet 22, at the moment, the liquid medium of the calibration column 10 is filled completely, and because the liquid medium has incompressibility, when the floater 23 blocks the air inlet and outlet 22, the volume of the liquid medium in the calibration column 10 filled each time is always fixed, so that the accuracy of the volume of the liquid medium filled in the calibration column 10 is improved, firstly, the defect that the scale display on the outer wall of the calibration column 10 has errors due to the surface tension of the liquid medium during filling is overcome, and the accumulated error generated when the liquid level height of the liquid medium in the calibration column 10 is read twice due to the error displayed on the outer wall of the calibration column 10 due to the surface tension of the liquid medium after the liquid medium in the calibration column 10 is extracted is reduced; meanwhile, when the liquid medium of the conventional calibration column 10 is filled, the filling amount needs to be controlled according to the scales, so that the calibration column is complicated, the air inlet and outlet 22 is automatically blocked by the float 23 to stop filling after the liquid medium is filled to the designed capacity, the operation difficulty is low, and the filling rapidness is ensured; after the calibration column 10 is filled, the liquid medium in the calibration column 10 is pumped out by a pump, and the float 23 is separated from the air inlet and outlet 22 along with the descending of the liquid level, so that the external air enters the calibration column 10 from the air inlet and outlet 22.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a take automatic exhaust function's flow calibration post, includes transparent material's calibration post, calibration post upper end and lower extreme all are equipped with connection end cover, its characterized in that: the upper end of the inner cavity of the floater chamber is connected with an air inlet and outlet, and a floater which is used for floating and plugging the air inlet and outlet when the calibration column is filled with liquid medium is arranged in the floater chamber.
2. The flow calibration post with automatic exhaust function according to claim 1, characterized in that: a sliding column is arranged above a butt joint port at the lower end of the inner cavity of the floater chamber; the lower end of the floater is provided with a sliding hole which is matched with the sliding column to slide so that the floater still keeps sliding vertically when floating upwards and abutting against the air inlet and the air outlet.
3. The flow calibration post with automatic exhaust function according to claim 2, characterized in that: the lower end of the sliding column is connected with the inner cavity of the floater chamber through a connecting rib plate.
4. The flow calibration post with automatic exhaust function according to claim 1, characterized in that: and a sealing ring which is propped against the air inlet and outlet for sealing when the floater floats upwards is arranged at one end of the floater facing the air inlet and outlet.
5. The flow calibration post with automatic exhaust function according to claim 1, characterized in that: the specific gravity of the floater and the liquid medium is 0.5-0.8: 1.
6. the flow calibration post with automatic exhaust function according to claim 1, characterized in that: the connecting end cover is provided with an internal thread hole, and the float chamber is in threaded fit with the internal thread hole.
7. A flow calibration post with automatic exhaust function according to claim 6, characterized in that: the float chamber includes an upper shell and a lower shell.
8. A flow calibration post with automatic exhaust function according to claim 7, characterized in that: the upper shell and the lower shell are connected through threads.
9. A flow calibration post with automatic exhaust function according to claim 7, characterized in that: the air inlet and outlet are positioned on the upper shell, and the butt joint port is positioned on the lower shell.
10. A flow calibration post with automatic exhaust function according to claim 7, characterized in that: the lower shell is in threaded engagement and butt joint with the internal thread hole of the connecting end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676326.1U CN214471202U (en) | 2021-04-01 | 2021-04-01 | Flow calibration column with automatic exhaust function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676326.1U CN214471202U (en) | 2021-04-01 | 2021-04-01 | Flow calibration column with automatic exhaust function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214471202U true CN214471202U (en) | 2021-10-22 |
Family
ID=78177319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120676326.1U Active CN214471202U (en) | 2021-04-01 | 2021-04-01 | Flow calibration column with automatic exhaust function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214471202U (en) |
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2021
- 2021-04-01 CN CN202120676326.1U patent/CN214471202U/en active Active
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