CN203335364U - Protection system of reversing proximity switch of pumping equipment - Google Patents
Protection system of reversing proximity switch of pumping equipment Download PDFInfo
- Publication number
- CN203335364U CN203335364U CN2013203832710U CN201320383271U CN203335364U CN 203335364 U CN203335364 U CN 203335364U CN 2013203832710 U CN2013203832710 U CN 2013203832710U CN 201320383271 U CN201320383271 U CN 201320383271U CN 203335364 U CN203335364 U CN 203335364U
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- China
- Prior art keywords
- pumping equipment
- proximity switch
- approach switch
- reversing
- protection system
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- 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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Abstract
The utility model discloses a protection system of a reversing proximity switch of pumping equipment. The protection system of the reversing proximity switch of the pumping equipment comprises the reversing proximity switch arranged on a water tank and a signal sensing block which is arranged on the tail portion of a concrete cylinder piston, wherein the reversing proximity switch is electrically connected with an electromagnetic unloading valve which is arranged between an oil outlet of a main pump and the oil tank. According to the pumping equipment using the protection system of the reversing proximity switch, the protection system does not work when the pumping equipment is in a pumping mode, and when the pumping equipment is switched to a mode that the piston retreats for maintenance, the proximity switch on the water tank senses the signal sensing block arranged on the tail portion of the concrete cylinder piston, then a signal is sent out and the electromagnetic unloading valve is controlled to enable direction communication between a main pump oil circuit and the oil tank to be achieved, the concrete cylinder piston stops retreating, and the reversing proximity switch is protected from being damaged. The protection system of the reversing proximity switch can be widely used on electronic-control reversing type pumping equipment.
Description
Technical field
The utility model belongs to the piston type industrial pump in pumping equipment, is specifically related to a kind of approach switch of the commutation for pumping equipment protective gear.
Background technique
At present, piston type industrial pump is under normal mode of operation, concrete cylinder backward stroke of the piston in the concrete cylinder is in water tank the time, the commutation approach switch is sensed the induction of signal piece that concrete cylinder piston tail arranges, the commutation approach switch sends the control module of signal to equipment, and control module is sent instruction and controlled the commutation of concrete cylinder piston.But when equipment is moving back under piston mode while being overhauled, the commutation approach switch manually need to be taken off, not so concrete cylinder piston rollback is to water tank, if do not take off the commutation approach switch, concrete cylinder piston only easily breaks approach switch.
The model utility content
The technical problem that concrete cylinder piston breaks the commutation approach switch easily occurs for existing pumping equipment moving back under piston mode, the utility model provides a kind of commutation approach switch protective system of pumping equipment, and the approach switch that prevents from commutating is damaged.
The utility model adopts following technological scheme to realize: a kind of pumping equipment commutation approach switch protective system; comprise the commutation approach switch that is arranged on water tank and be arranged on the induction of signal piece of concrete cylinder piston tail, described commutation approach switch be arranged on the main pump oil outlet and be electrically connected to the unloading electromagnetic valve between fuel tank.
Described unloading electromagnetic valve is to be arranged on the solenoid directional control valve on oil circuit between main pump oil outlet and fuel tank.
Described unloading electromagnetic valve is the electromagnetic relief valve on the main pump oil circuit.
Described commutation approach switch is connected with alarm, realizes the warning of concrete cylinder piston collisions.
The pumping equipment of the commutation approach switch protective system that adopts the utility model to relate to; under the pumping pattern, the utility model is inoperative; when being switched to, equipment moves back under piston mode while being overhauled; after the water tank approach switch is sensed the induction of signal piece of concrete cylinder piston tail setting; at first send the control module of signal to equipment; control module is signaled instruction again to the unloading electromagnetic valve on the main pump oil circuit; unloading electromagnetic valve is opened; the main pump oil circuit directly is connected and realizes overflow with fuel tank; concrete cylinder piston piston stops rollback, and protection commutation approach switch is not damaged.
The utility model does not change the structure of pumping equipment, can effectively protect the damage because forgetting that dismounting causes in moving back the process of piston of commutation approach switch, can be widely used in the pumping equipment of electric control reversing.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
The accompanying drawing explanation
The scheme of installation that Fig. 1 is the pumping equipment commutation approach switch that relates to of the utility model.
The hydraulic schematic diagram that Fig. 2 is the pumping equipment commutation approach switch protective system that adopts the utility model to relate to.
Number in the figure: 1-water tank, the 2-approach switch that commutates, 3-induction of signal piece, 4-concrete cylinder piston, 5-oil cylinder piston, 6-unloading electromagnetic valve, 7-main pump.
Embodiment
Embodiment
Referring to Fig. 1 and Fig. 2, pumping equipment commutation approach switch protective system in diagram, comprise the commutation approach switch 2 be arranged on water tank 1 and the induction of signal piece 3 that is arranged on concrete cylinder piston 4 afterbodys, concrete cylinder piston 4 is connected the pumping work back and forth in the concrete cylinder of realization with the oil cylinder piston 5 of master cylinder, under normal pumping pattern, commutation approach switch 2 realizes detecting the position of concrete cylinder piston by the induction of signal fast 3 of induction concrete cylinder piston 4 afterbodys, and sends the commutation of SC sigmal control master cylinder, in the present embodiment, commutation approach switch 2 also is electrically connected to the unloading electromagnetic valve 6 between fuel tank with the oil outlet that is arranged on main pump 7, at pumping equipment in moving back under piston mode, when operator forget dismounting commutation approach switch, concrete cylinder piston retreats always, when commutation approach switch 2 is sensed the induction of signal piece 3 of concrete cylinder piston 4 afterbodys, send SC sigmal control unloading electromagnetic valve 6, unloading electromagnetic valve 6 adopts the solenoid directional control valve of a 2/2-way to realize the opening and closing of main pump overflow oil circuit, unloading electromagnetic valve 6 commutations realize the overflow of master cylinder oil circuit, automatically moving back piston stops, and trigger alarm buzzer and report to the police, remind operator to dismantle the commutation approach switch.
Above embodiment has described basic principle of the present utility model and major character and advantage of the present utility model, the technician of the industry should understand, the utility model is not restricted to the described embodiments, that in above-described embodiment and specification, describes just illustrates specific works principle of the present utility model, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, these changes and improvements all fall in claimed the utility model scope, the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. pumping equipment commutation approach switch protective system; comprise the commutation approach switch be arranged on water tank and the induction of signal piece that is arranged on concrete cylinder piston tail, it is characterized in that: described commutation approach switch is electrically connected to the unloading electromagnetic valve be arranged between main pump oil outlet and fuel tank.
2. a kind of pumping equipment commutation approach switch protective system according to claim 1, it is characterized in that: described unloading electromagnetic valve is to be arranged on the solenoid directional control valve on oil circuit between main pump oil outlet and fuel tank.
3. a kind of pumping equipment commutation approach switch protective system according to claim 1, it is characterized in that: described unloading electromagnetic valve is the electromagnetic relief valve on the main pump oil circuit.
4. according to the described a kind of pumping equipment commutation approach switch protective system of claim 1-3 any one, it is characterized in that: described commutation approach switch is connected with alarm, realizes the warning of concrete cylinder piston collisions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203832710U CN203335364U (en) | 2013-06-28 | 2013-06-28 | Protection system of reversing proximity switch of pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203832710U CN203335364U (en) | 2013-06-28 | 2013-06-28 | Protection system of reversing proximity switch of pumping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335364U true CN203335364U (en) | 2013-12-11 |
Family
ID=49704041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203832710U Expired - Lifetime CN203335364U (en) | 2013-06-28 | 2013-06-28 | Protection system of reversing proximity switch of pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335364U (en) |
-
2013
- 2013-06-28 CN CN2013203832710U patent/CN203335364U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 14, 2023, the expiration and termination of 39 volumes and 2802 issues of the patent Number: 28-02 Volume: 39 |
|
| CU01 | Correction of utility model |