CN215635324U - Miniature pneumatic system protector - Google Patents
Miniature pneumatic system protector Download PDFInfo
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- CN215635324U CN215635324U CN202121081190.6U CN202121081190U CN215635324U CN 215635324 U CN215635324 U CN 215635324U CN 202121081190 U CN202121081190 U CN 202121081190U CN 215635324 U CN215635324 U CN 215635324U
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- pneumatic
- pressure switch
- pneumatic pressure
- solenoid valve
- trachea
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Abstract
The utility model discloses a miniature pneumatic system protector which is characterized by comprising a shell, an input air pipe, an output air pipe, an electromagnetic valve and a pneumatic pressure switch for controlling the on-off of a motor of an air compressor, wherein the pneumatic pressure switch is used for detecting the pressure in an air tank and is provided with a switch body and a button arranged at the top of the switch body, the shell is provided with an inlet and an outlet for the input air pipe and the output air pipe to extend out respectively, the input air pipe is connected to the air pipe, the button is used for manually controlling the on-off of the pneumatic pressure switch, the pneumatic pressure switch is electrically connected with the control end of the electromagnetic valve, the air inlet of the electromagnetic valve is connected to the switch body, and the air outlet of the electromagnetic valve is connected to the output air pipe. The utility model can protect the air compressor in the pneumatic system and reduce the failure rate of the pneumatic system.
Description
Technical Field
The utility model relates to a pneumatic system, in particular to a miniature pneumatic system protector.
Background
Most of the prior tire type container cranes are subjected to oil-electricity transformation, and the transformed cranes use electricity-taking trolleys to take electricity to obtain energy for working. Generally, an electric trolley uses an air compressor or an electric push rod as a power source.
Wherein, if adopt electric putter as the power supply of getting the electric dolly, the structure is more complicated. In order to ensure the safety of field operation, regular special inspection and maintenance are required. Mechanical parts are more, because the transmission all relies on rigid connection, and friction loss is great, and inspection maintenance time is longer, and the maintenance cost is high, and it is stronger to get the electric dolly rigidity moreover, and the motion is more accurate. Therefore, a stronger PLC is needed for calculation control, and the overall cost is higher.
To the power supply that adopts air compressor as getting the electricity dolly, because pneumatic means simple structure, the installation is maintained conveniently, and the drive medium is the air, is difficult electrically conductive, safe in utilization. The pneumatic transmission is adopted at the joint of the equipment, so that certain movement allowance is provided, the maintenance cost and the acquisition cost are lower, and most of the equipment adopts a pneumatic scheme. However, after the pneumatic system works for a long time, the elasticity of the spring, the air pipe and the like in the electromagnetic valve is aged and attenuated or deformed, and when the system loses pressure completely, the deformation is increased, so that gaps are generated at all positions of the pneumatic system.
Further, when the gaps are increased, the leakage of the pneumatic system gas is increased, and at this time, the above problem can be solved by inputting a large system pressure. The pneumatic element can be compressed by larger pressure to deform, so that the clearance is reduced, and the system can normally run. However, if a small system pressure is still input, the deformation amount of the pneumatic element is insufficient, and at this time, the leakage rate is high, and the system cannot operate. Under the condition, because the system can not reach the working pressure, the air compressor runs continuously, the motor is easily overheated, the ageing of a compressor cup is accelerated, and the system faults are increased.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a miniature pneumatic system protector which can protect an air compressor motor in a pneumatic system and reduce the failure rate.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a miniature pneumatic system protector, which comprises a housin, the input trachea, the output trachea, the solenoid valve and be used for controlling the pneumatic pressure switch of air compressor motor break-make, pneumatic pressure switch is used for detecting the gas pitcher internal pressure, the button at switch body and locating switch body top has, it has the entry and the export that supply input trachea and output trachea to stretch out respectively to open on the casing, the input trachea connects to the trachea, the button is used for manual control to start the pneumatic pressure switch break-make, pneumatic pressure switch is connected with the control end electricity of solenoid valve, the air inlet access switch body of solenoid valve, the gas outlet of solenoid valve connects to the output trachea.
Preferably, the air tank and the air inlet of the electromagnetic valve are detachably connected through a butt joint.
Preferably, the shell is also provided with a cable port through which a communication cable for the electromagnetic valve and the pneumatic pressure switch passes.
Preferably, the coil of the solenoid valve is connected in series in the control circuit of the pneumatic pressure switch, and the motor of the air compressor is connected in series in the other control circuit of the pneumatic pressure switch.
Compared with the prior art, the utility model has the following beneficial effects:
the pneumatic pressure switch is configured to detect the pressure in the pneumatic system, so that the air pressure can be fed back in time, the air compressor can output larger pressure once, the service life of the air compressor is prolonged, meanwhile, the on-off control of the electromagnetic valve is used for preventing the accelerated aging of elements of the air compressor caused by the long-time work of the air compressor due to the internal leakage of the pneumatic system, and the quick judgment of the fault point of the pneumatic system can be realized; the utility model is suitable for a miniature pneumatic system with lower air pressure and lower system capacity.
Drawings
FIG. 1 is a schematic view of the miniature pneumatic system protector of the present invention;
FIG. 2 is a control schematic diagram of the miniature pneumatic system protector of the present invention.
In the figure: 1. a housing; 11. an inlet; 12. an outlet; 13. a cable port; 20. a pneumatic pressure switch; 2. a switch body; 3. inputting the air pipe; 4. an air output pipe; 5. an electromagnetic valve; 6. a button; 7. and (4) butt joint.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The miniature pneumatic system protector shown in fig. 1-2 comprises a shell, an input air pipe, an output air pipe, an electromagnetic valve and a pneumatic pressure switch for controlling the on-off of an air compressor motor, wherein the pneumatic pressure switch is used for detecting the pressure in an air tank, a button is provided with a switch body and arranged at the top of the switch body, the shell is provided with an inlet and an outlet for respectively extending the input air pipe and the output air pipe, the input air pipe is connected to the air pipe, the button is used for manually controlling the on-off of the pneumatic pressure switch, the pneumatic pressure switch is electrically connected with the control end of the electromagnetic valve, specifically, the 220V alternating current is electrically connected, the air inlet of the electromagnetic valve is connected to the switch body, and the air outlet of the electromagnetic valve is connected to the output air pipe.
The pneumatic pressure switch 20 is configured to detect the pressure in the pneumatic system and feed back the air pressure in time, so that the air compressor can output larger pressure at one time, the service life of the air compressor is prolonged, meanwhile, the on-off control of the electromagnetic valve 5 is used for preventing the accelerated aging of elements of the air compressor caused by the long-time work of the air compressor due to the internal leakage of the pneumatic system, and the quick judgment of the fault point of the pneumatic system can be realized; the utility model is suitable for a miniature pneumatic system with lower air pressure and lower system capacity.
Wherein, the switch body 2 and the air inlet of the electromagnetic valve 5 of the embodiment are detachably connected through the butt joint 7. Specifically, the butt joint 7 may be a copper pair wire. In order to facilitate the threading and threading of the cable, the housing 1 of this embodiment is further provided with a cable port 13 for the threading of the communication cable of the electromagnetic valve 5 and the pneumatic pressure switch 20. For reliable control, as shown in fig. 2, the coil of the solenoid valve 5 of the present embodiment is connected in series in the control circuit of the pneumatic pressure switch 20, and the motor of the air compressor is connected in series in the other control circuit of the pneumatic pressure switch.
In one embodiment, the miniature pneumatic system protector is powered by 220V AC power and is installed at the air compressor outlet and then connected into the pneumatic system by using a threaded connection. The safety protection of the pneumatic system is realized by the pneumatic elements such as the pneumatic pressure switch 20, the electromagnetic valve 5 and the like. External power supply: because the system is mainly used for protecting the micro pneumatic system, and the micro system generally adopts a small 220V air compressor, the electromagnetic valve 5 has an alternating voltage of 220V and is consistent with the system voltage.
The control principle is as follows:
A. the pneumatic control part: a pneumatic pressure switch 20 is included, and compressed air enters the switch body 2 from a tank when the air compressor is operating. The pneumatic pressure switch 20 is operated to be turned on and off at a predetermined pressure. When the air compressor normally operates, the switch is in a closed state, when the pressure of the pneumatic pressure switch 20 reaches the upper limit of the preset pressure, the compressed air pushes the thimble through the rubber, the jump spring drives the jump board through the jump bridge, so that the moving contact in the bakelite seat is separated, the control circuit is cut off, and the motor stops rotating. When the air pressure of the air tank is reduced to the lower limit of the marked pressure, the air tank jumps again, so that the circuit is connected to work repeatedly.
B. Electric control part
An electric control section: the electromagnetic valve 5 comprises a valve body of the electromagnetic valve 5 and a coil of the electromagnetic valve 5, when the electromagnetic valve 5 is electrified, electromagnetic force generated by the coil of the electromagnetic valve 5 lifts the closing member from the valve seat, and the valve is closed; when the power is cut off, the electromagnetic force disappears, the spring presses the closing part on the valve seat, and the valve is opened.
C. The control logic: after the power is on, the system pressure is lower than the starting point pressure of the air compressor, the pneumatic pressure switch 20 is communicated with a system circuit to start the air compressor, meanwhile, the coil of the electromagnetic valve 5 is electrified, electromagnetic force is generated to lift the closing member from the valve seat, and the valve is closed. When the system pressure reaches the air compressor turn-off point pressure, the pneumatic pressure switch 20 opens the system circuit to turn off the air compressor. When the coil 5 of the electromagnetic valve loses power, the electromagnetic force disappears, the spring presses the closing part on the valve seat, and the valve is opened to communicate with the pneumatic system. Thus driving the pneumatic system with a higher system pressure. When the air pressure of the system is reduced to the starting point pressure of the air compressor, the circuit is connected and works again.
The use method of the miniature pneumatic system protector comprises the following steps:
1. the pneumatic pressure switch 20 is installed at the outlet 12 of the air compressor air tank, the P port of the two-position one-way normally closed electromagnetic valve 5 is installed at the air outlet of the pneumatic pressure switch 20, the air outlet of the system is installed at the T port of the electromagnetic valve 5, the thread connectors are all made of raw material belts to enhance the sealing performance of the thread connectors, and the air tightness of the thread connectors needs to be checked by pressurization after installation.
2. The zero line and the live line of the 220V system are connected into a pressure switch, and the live line inlet wire of the air compressor and the live line inlet wire of the battery valve are connected into the opening point of the pneumatic pressure switch 20. When the air compressor is operated, the solenoid valve 5 should be electrically closed.
3. The pneumatic pressure switch 20 is adjusted to adjust the pressure to have an opening point pressure greater than 110% of the minimum maintenance pressure of the pneumatic system and a closing point pressure equal to the maximum pressure of the pneumatic system.
4. After debugging is finished, the access cable, the input air pipe 3 and the output air pipe 4 are bound to prevent damage caused by hanging of a line ditch, and installation is finished after the test machine is normal.
The embodiments of the present invention are not limited thereto, and according to the above-described embodiments of the present invention, other embodiments obtained by modifying, replacing or combining the above-described preferred embodiments in other various forms without departing from the basic technical idea of the present invention and without conflict between the conventional technical knowledge and conventional means in the art are within the scope of the present invention.
Claims (4)
1. The utility model provides a miniature pneumatic system protector, a serial communication port, which comprises a housin, the input trachea, the output trachea, the solenoid valve and be used for controlling the pneumatic pressure switch of air compressor motor break-make, pneumatic pressure switch is used for detecting the gas pitcher internal pressure, the button at switch body and locating switch body top has, it has the entry and the export that supply input trachea and output trachea to stretch out respectively to open on the casing, the input trachea connects to the trachea, the button is used for manual control to start pneumatic pressure switch break-make, pneumatic pressure switch is connected with the control end electricity of solenoid valve, the air inlet access switch body of solenoid valve, the gas outlet of solenoid valve connects to the output trachea.
2. A micro-pneumatic system protector as claimed in claim 1, wherein the switch body and the inlet port of the solenoid valve are removably connected by a butt joint.
3. A miniature pneumatic system protector as claimed in claim 1 in which the housing further defines a cable port through which a communication cable for the solenoid valve and the pneumatic pressure switch extends.
4. A miniature pneumatic system protector as set forth in claim 1 wherein the coil of the solenoid valve is connected in series in the control loop of the pneumatic pressure switch and the motor of the air compressor is connected in series in the other control loop of the pneumatic pressure switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121081190.6U CN215635324U (en) | 2021-05-19 | 2021-05-19 | Miniature pneumatic system protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121081190.6U CN215635324U (en) | 2021-05-19 | 2021-05-19 | Miniature pneumatic system protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215635324U true CN215635324U (en) | 2022-01-25 |
Family
ID=79938686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121081190.6U Active CN215635324U (en) | 2021-05-19 | 2021-05-19 | Miniature pneumatic system protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215635324U (en) |
-
2021
- 2021-05-19 CN CN202121081190.6U patent/CN215635324U/en active Active
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