Pneumatic integrated valve group
Technical field
The present invention relates to a kind of pneumatic integrated valve group.
Background technique
China's railway transportation equipment industry achieves breakthrough in major product field, substantially meets the needs of China railways and Construction of Urban Rail Traffic.Wiper system is configured with to remove rainwater on headstock front window, dust to the impact in the driver visual field at track front part of vehicle.Due to the high speed performance of rail vehicle, Wiper system can not adopt common motor driven systems, and needs Pneumatic drive system to the rain brush movement needs on the rail vehicle meeting high-speed motion.
Mostly be in existing conventional Pneumatic drive system that each control valve is rack-mount respectively, then by external pipeline, the working hole of each control valve and air inlet, relief opening correspondence be communicated with to form pneumatic control system.But this mounting type of connection installed each control valve respectively and realized each control valve by external pipeline, not only installation process comparatively bothers, and it is intricate that external pipeline extends, and is difficult to repair and maintenance, and whole pneumatic control system to take installing space larger.
Summary of the invention
The invention provides a kind of easy for installation, take the little pneumatic integrated valve group of installing space.
The technological scheme of pneumatic integrated valve group provided by the present invention is: pneumatic integrated valve group, comprise reduction valve, proportional flow control valve and the first solenoid valve, second solenoid valve, 3rd solenoid valve, three solenoid valves are and have suction port, relief opening and working hole and control working hole respectively with suction port, the two-position three-way valve of relief opening switched conductive, described integrated valve group also comprises main air inlet path and main exhaust road, main air inlet path is provided with reduction valve, main air inlet path is connected with the first air inlet branch road of the suction port being communicated with main air inlet path and the first solenoid valve in the upstream position of described reduction valve, main air inlet path is connected with corresponding connection main air inlet path and second respectively in the upstream position of described reduction valve, second of the suction port of the 3rd solenoid valve, 3rd air inlet branch road, 3rd air inlet branch road is provided with proportional flow control valve, described main exhaust road is communicated with the relief opening of three solenoid valves respectively by exhaust branch road, described reduction valve, proportional flow control valve and three solenoid valves all set firmly on a mounting board, an external installation side of mounting plate offers the external suction port be communicated with main air inlet path, the external connection row gas port be communicated with main exhaust road and three external working holes, three external working holes are communicated with the working hole one_to_one corresponding of three solenoid valves respectively by work gas circuit, described main air inlet path, each air inlet branch road, exhaust line, each exhaust branch road and work gas circuit are the inside air flue be arranged in mounting plate, described mounting plate is provided with described reduction valve, the mounting hole that gas port on proportional flow control valve and three solenoid valves is communicated with corresponding inside air flue.
Described mounting plate is installed with two-bit triplet selector valve, two-bit triplet selector valve has suction port, working hole and relief opening and control working hole respectively with suction port, two working positions of relief opening switched conductive, the suction port of described two-bit triplet selector valve and working hole to be serially connected on described main air inlet path and to be positioned at the upstream of described first air inlet branch road, the relief opening of described two-position three-way valve is communicated with described main exhaust road by urgent exhaust line, described urgent exhaust line is the inside air flue be arranged in described mounting plate, mounting plate is provided with the mounting hole be communicated with corresponding inside air flue by the gas port of described two-bit triplet selector valve.
Described two-bit triplet selector valve is the hand-operated direction valve manually carrying out two working positions switchings.
The normally open solenoid valve that when the first described solenoid valve is power-off, corresponding working hole is communicated with suction port, the normally closed solenoid valve that when second, third solenoid valve is power-off, corresponding working hole is communicated with relief opening.
Described mounting plate has the valve body attachment face with the opposing setting in described external installation side, described reduction valve, proportional flow control valve, two-bit triplet selector valve and three solenoid valves are all arranged on described valve body attachment face.
The invention has the beneficial effects as follows: pneumatic integrated valve group provided by the present invention when mounted, first by reduction valve, proportional flow control valve and three solenoid valve prepackages are on a mounting board, and realize reduction valve by the inside air flue being arranged on mounting plate inside, the connection of the corresponding gas port on proportional flow control valve and three solenoid valves, and then realize whole pneumatic control gas circuit, by controlling the energising of three solenoid valves, power-off and reduction valve, the adjustment of proportional flow control valve, different working pressures can be exported respectively on three external working holes like this on the basis sharing an external suction port and external connection row gas port, to tackle different pressure load requirements.And external suction port, external connection row gas port and three external working holes are all be arranged on the same installation side of mounting plate, dock efficient and convenient with external gas circuit during use, simultaneously, because each valve is all directly pre-install on a mounting board, and be communicated with by inner air flue, the installing space making whole integrated valve group take like this is less, can apply the place higher to requirements of installation space.
Further, go back integrated installation on a mounting board and have two-bit triplet selector valve, like this, when the pneumatic control gas circuit that pressure valve, proportional flow control valve and three solenoid valves are formed breaks down, can by the urgent two-bit triplet selector valve that switches so that the pressurized gas in the inside air flue on mounting plate be discharged, improve device security performance, be convenient to carry out Maintenance and Repair to integrated valve group.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of pneumatic integrated valve group provided by the present invention;
Fig. 2 is the rear view of pneumatic integrated valve group shown in Fig. 1;
Fig. 3 is the schematic diagram of gas circuit of pneumatic integrated valve group shown in Fig. 1.
Embodiment
As shown in Figure 1 to Figure 3, a kind of embodiment of pneumatic integrated valve group, the mounting plate 10 of respective inner air flue is established in integrated valve body in this embodiment comprises, before and after mounting plate 10, both sides have the valve body installation side 11 of opposing setting and external installation side 12, to install on side 11 by screw 7 and pad 8 is fastening is provided with reduction valve 6 at valve body, proportional flow control valve 4, first solenoid valve 1, second solenoid valve 2, 3rd solenoid valve 3 and two-bit triplet selector valve 5, wherein, three solenoid valves are has suction port A1, relief opening A2 and working hole A3 and control working hole A3 respectively with suction port A1, the two-position three-way valve of relief opening A2 switched conductive, and the first solenoid valve 1 normally open solenoid valve that corresponding working hole is communicated with suction port when being power-off, second solenoid valve 2, the normally closed solenoid valve that when 3rd solenoid valve is power-off, corresponding working hole is communicated with relief opening, two-bit triplet selector valve 5 then has suction port A1, working hole A3 and relief opening A2 and control working hole A3 respectively with suction port A1, two working positions of relief opening A2 switched conductive, two-bit triplet selector valve is the hand-operated direction valve manually carrying out two working positions switchings.The external installation side 12 of mounting plate 10 is provided with external suction port PG, external connection row gas port E and three external working hole, three external working holes are respectively for the external working hole AG that be communicated with corresponding to the working hole of three solenoid valves, external working hole BG, external working hole CG, be provided with for by external suction port PG in mounting plate 10, external connection row gas port E and three external working hole and the corresponding gas port of each valve are communicated with the inside air flue to form pneumatic control gas circuit, pneumatic control gas circuit comprises the main air inlet path 10 be communicated with external suction port PG, the main exhaust road 30 be communicated with external connection row gas port E, reduction valve 6 is arranged on main air inlet path 10, main air inlet path 10 is connected with in the upstream position of described reduction valve 6 first air inlet branch road 21 of the suction port being communicated with main air inlet path 10 and the first solenoid valve 1, main air inlet path 10 is connected with the main air inlet path 20 of corresponding connection and the second solenoid valve 2 respectively in the upstream position of described reduction valve 6, second air inlet branch road 22 of the suction port of the 3rd solenoid valve 3, 3rd air inlet branch road 23, 3rd air inlet branch road 23 is provided with described proportional flow control valve 4, described main exhaust road 30 is communicated with the relief opening of three solenoid valves respectively by exhaust branch road 50, and the working hole of three solenoid valves is communicated with respectively by the external working hole one_to_one corresponding that work gas circuit 60 is corresponding to three, the suction port of described two-bit triplet selector valve 5 and working hole to be serially connected on described main air inlet path 20 and to be positioned at the upstream of described first air inlet branch road 21, the relief opening of described two-position three-way valve 5 is communicated with promptly be vented by external connection row gas port E by urgent exhaust line 40 with described main exhaust road 30.Above-mentioned main air inlet path 20, each air inlet branch road, main exhaust road 30, be respectively vented branch road, work gas circuit 60 and urgent exhaust line 40 and be the inside air flue be arranged in mounting plate 10, the valve body of described mounting plate 10 is installed and correspondingly on side is provided with the mounting hole be communicated with corresponding inside air flue by the gas port on described reduction valve, proportional flow control valve and three solenoid valves, two-bit triplet selector valve.
During normal use, two-bit triplet selector valve 5 is in the working position making suction port and working hole conducting, pressurized gas through external suction port PG, main air inlet path 20 to three solenoid valve air feed, different load requests is met, the delivery pressure of the corresponding external working hole BG that the flow that can be controlled in the 3rd air inlet branch road 23 by resize ratio Flow valve 4 is communicated with quick adjustment and the working hole of the 3rd solenoid valve 3 to obtain different pressure.After three solenoid valves carry out working position switching, by work gas circuit 60 and branch road 50 conducting can be vented, and then by emptying through main exhaust road 30 for the gas in work gas circuit.
And when certain valve breaks down and causes whole pneumatic control gas circuit to break down, by switching the working position of two-position three-way valve 5, make working hole and the relief opening conducting of two-bit triplet selector valve 5, external suction port PG closes, and whole integrated valve group place enters emergency decompression state by external connection row gas port E.
In above-described embodiment, during emergency decompression state, adopt two manual outer three-way diverter valves to carry out pressure release, in other embodiments, pneumatic or electronic selector valve also can be adopted to carry out emergency decompression.
In above-described embodiment, first solenoid valve is normally open solenoid valve, and second, third solenoid valve is normally closed solenoid valve, is convenient to the action controlling wiper on rail vehicle like this, in other embodiments, also can select suitable solenoid valve to meet design requirement according to actual conditions.
In above-described embodiment, the equal integrated installation of each valve is installed on side at the same valve body of mounting plate, in other embodiments, also according to actual conditions and spatial requirement, can install each integrated valve in place.