CN2181742Y - Float switch type liquid level signalling device - Google Patents
Float switch type liquid level signalling device Download PDFInfo
- Publication number
- CN2181742Y CN2181742Y CN 94204559 CN94204559U CN2181742Y CN 2181742 Y CN2181742 Y CN 2181742Y CN 94204559 CN94204559 CN 94204559 CN 94204559 U CN94204559 U CN 94204559U CN 2181742 Y CN2181742 Y CN 2181742Y
- Authority
- CN
- China
- Prior art keywords
- switch
- pull bar
- liquid level
- float
- buoyancy aid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a float switch-typed liquid level signalling device, which is composed of a float, a crossarm, a push-pull rod, a switch, and a switch box. The switch is fixed to the riser of a base of the switch box; the upper end of the push-pull rod is connected with the moving contact of the switch through a jacket tube, and the lower part is sheathed in series and matched with the float, and is locked by an upper and lower limiting pin. The utility model adopts a direct drive switch for the float and the push-pull rod, which has the advantages of good reliability and long service life.
Description
The utility model relates to a kind of annunciator (transducer) of feed flow face control device adapted.
Existing leveling device (as the water tower control device), its annunciator (transducer) mostly adopt a buoyancy aid to drive a moving contact, utilize " connection " or " disconnection " of liquid surface lifting realization and another fixed contact, the work that comes automatically controlled water pump.This contact annunciator, though simple in structure, to install also easily, coming in contact property fault easily exists short shortcoming of poor reliability, useful life.
The purpose of this utility model is that a kind of improved float switch formula liquid level signal device will be provided, and it can prevent the contact fault effectively, improves reliability and increases the service life.
The utility model comprises buoyancy aid, cross-arm, pull bar, switch and switch-box, described switch-box links to each other solid by a cover with cross-arm, switch is fixed on the riser of switch-box base, the pull bar upper end is passed sleeve pipe and is connected with the moving contact of switch, its underpart and buoyancy aid string cover move joins, and fixed by upper arresting pin and lower limit lock.When liquid level constantly descends, buoyancy aid is also along the corresponding downslide of push rod, when buoyancy aid slides to when offseting with the lower limit pin, and float loss of buoyance and produce weight, i.e. the moving contact of Drawing switch and fixed contact closure, thus output " connection " signal makes pump operation; Otherwise, when liquid level progressively rises to buoyancy aid and upper arresting pin and offsets, rely on the buoyancy of buoyancy aid to push up on the pull bar, the moving contact of pull switch separates with fixed contact again, and promptly output " disconnections " signal makes the water pump stall, thus the realization purpose of control automatically.
The utility model is owing to adopt buoyancy aid and the direct driving switch of pull bar, so, can not come in contact bad fault, good reliability.Simultaneously, switching device is in switch-box, and is isolated with outer room, has good seal protection, so, not being subjected to the influence of any poor environment, can increase the service life, and also safe and reliable.In addition, be movingly between pull bar and the buoyancy aid, the depth bounds of its control liquid level can be regulated by the spacing of the upper and lower spacing pin on the pull bar, can adapt to the level control of various level scopes and various compositions.
Concrete structure of the present utility model is provided by the following drawings and embodiment.
Fig. 1 is front view of the present utility model (analysing and observe).
Fig. 2 is end view of the present utility model (broken section).
Fig. 3 is a vertical view of the present utility model.
Do further describing of embodiment below in conjunction with accompanying drawing: this annunciator is made up of buoyancy aid (14), cross-arm (9), pull bar (12), switch (5), switch-box (1) etc.Switch-box is made of a housing and base (7), and base is provided with a riser (2), and switch (5) is fixed on the riser, whole switch-box links to each other solid with cross-arm (9) by a sleeve pipe (8), cross-arm is mainly used in the whole annunciator of support, has screw at its two, uses for installing.The upper end of pull bar (12) is passed sleeve pipe (8) centre bore and is connected with the moving contact (4) of switch (5), and centre bore and its string that buoyancy aid (14) is passed in the bottom overlap moving joining, and by upper arresting pin (13) and lower limit pin (15) locking.Buoyancy aid preferably adopts circular hollow body, and guarantees good sealing.The depth bounds of the spacing decision Be Controlled liquid level of upper and lower spacing pin, therefore, the length of its spacing and pull bar should be set according to the control needs.Simultaneously, switch (5) can be controlled monophase machine, and also three motors of may command, thereby its fixed contact (3) also should be selected according to the Be Controlled motor, and signal output lead (11) is connected with fixed contact respectively.
Be the excessive bad switch that pushes up of the buoyancy that prevents buoyancy aid (14), the step (10) of a diameter greater than sleeve pipe (8) center bore preferably be set, to limit the last top amplitude of pull bar on the top of pull bar (12) (being the position below the cross-arm).Otherwise, also should establish the cap stopper (6) of a diameter greater than sleeve pipe (8) center bore at the pull bar top, the fall with the restriction pull bar prevents to draw bad switch.
In addition, when this annunciator was used for the big level of control, the length of its pull bar also increased relatively, and the also corresponding increase of its weight can pull switch for guaranteeing it, can set up a counterweight buoyancy aid (16) in the lower end of pull bar.
Claims (3)
1, a kind of float switch formula liquid level signal device, comprise buoyancy aid (14), cross-arm (9), pull bar (12), switch (5) and switch-box (1), it is solid to it is characterized in that described switch-box (1) links to each other with cross-arm (9) by a sleeve pipe (8), switch (5) is fixed on the riser (2) of switch-box base (7), pull bar (12) upper end is passed sleeve pipe (8) and is connected with the moving contact (4) of switch (5), moving joining of its underpart and buoyancy aid (14) string cover, and by upper arresting pin (13) and lower limit pin (15) locking.
2, annunciator as claimed in claim 1 is characterized in that the step (10) of a diameter greater than sleeve pipe (8) center bore arranged at the top of described pull bar (12), and the cap stopper (6) of a diameter greater than sleeve pipe (8) central diameter arranged on its top.
3, annunciator as claimed in claim 1 or 2 is characterized in that there is a counterweight buoyancy aid (16) described pull bar (12) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94204559 CN2181742Y (en) | 1994-02-08 | 1994-02-08 | Float switch type liquid level signalling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94204559 CN2181742Y (en) | 1994-02-08 | 1994-02-08 | Float switch type liquid level signalling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181742Y true CN2181742Y (en) | 1994-11-02 |
Family
ID=33823757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94204559 Expired - Lifetime CN2181742Y (en) | 1994-02-08 | 1994-02-08 | Float switch type liquid level signalling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181742Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657984A (en) * | 2012-04-21 | 2012-09-12 | 苏州宇洋环保设备制造有限公司 | Off-line switch device for bag type dust remover |
| CN104637727A (en) * | 2015-02-18 | 2015-05-20 | 柯远珍 | Position sensing switch |
| CN106482812A (en) * | 2016-11-21 | 2017-03-08 | 国网湖北省电力公司武汉供电公司 | A kind of river course shaft tower water level monitoring alarm |
| CN107315428A (en) * | 2017-05-22 | 2017-11-03 | 江苏海鼎电气科技有限公司 | A kind of multistage triggering fluid level controller |
| CN111829189A (en) * | 2020-01-10 | 2020-10-27 | 金涛 | Float device and water heater |
-
1994
- 1994-02-08 CN CN 94204559 patent/CN2181742Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657984A (en) * | 2012-04-21 | 2012-09-12 | 苏州宇洋环保设备制造有限公司 | Off-line switch device for bag type dust remover |
| CN104637727A (en) * | 2015-02-18 | 2015-05-20 | 柯远珍 | Position sensing switch |
| CN106482812A (en) * | 2016-11-21 | 2017-03-08 | 国网湖北省电力公司武汉供电公司 | A kind of river course shaft tower water level monitoring alarm |
| CN106482812B (en) * | 2016-11-21 | 2023-09-29 | 国网湖北省电力公司武汉供电公司 | River channel pole tower water level monitoring alarm |
| CN107315428A (en) * | 2017-05-22 | 2017-11-03 | 江苏海鼎电气科技有限公司 | A kind of multistage triggering fluid level controller |
| CN111829189A (en) * | 2020-01-10 | 2020-10-27 | 金涛 | Float device and water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |