CN203421196U - Sand spraying control valve for locomotive - Google Patents

Abstract

The utility model relates to a sand spraying control valve for a locomotive. A valve body is connected to a mounting flange of the locomotive through a support. An air inlet and an air outlet are formed in the support. Pressure air entering the air inlet can flow to a control air inlet and a main intake air inlet of the valve body at the same time. The air outlet is communicated with two sand sprayers through air outlet channels. The sand spraying control valve is characterized in that the valve body comprises an electromagnet assembly, a packing cup, a piston, a lower valve, an upper valve, a compression spring, a main air inlet chamber, an air outlet chamber and a phi 0.4 control air entrance, wherein the electromagnet assembly is installed in a coil; a pair of symmetrical phi 1.8 air outlet holes are further formed in the valve body. The sand spraying control valve for the locomotive has the advantages that the structure is simple, and the situation that a sand spraying system on the locomotive can not achieve the self-cleaning function is avoided; the sand spraying system can operate normally for a long time, and therefore traction and braking of the locomotive are reliably guaranteed.

Description

A kind of locomotive stucco control valve

Technical field

The utility model relates to a kind of locomotive stucco control valve.

Background technique

The stucco control valve that locomotive uses is solenoid valve, and as the control unit of sanding valve, thereby solenoid valve is just controlled simply the break-make of air pipe line and realized stucco and stop stucco.After longer a period of time of sand sprayer work, can cause because of the deposition of sand grains the stucco of stucco buret to reduce even sand pipe stops up.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned shortcoming, for locomotive provides a kind of stucco control valve that possesses energising, stucco, clean three kinds of functions.

The technical solution of the utility model is---

A kind of locomotive stucco control valve, it relies on support 1 valve body 3 to be connected on the mounting flange of locomotive, in described support 1, offer intake grill 11 and exhaust outlet 10, the pressure air being entered by intake grill 11 can lead to control wind intake grill 12 and the main air intake intake grill 9 of valve body 3 simultaneously, this two pressure air passages intercommunication and general all in closed condition, exhaust outlet 10 communicates with two sand sprayers respectively through air-out passage, it is characterized in that: the valve body 3 of this control valve comprises electromagnet assembly 2, leather cup 4, piston 5, lower valve 6, upper valve 7 and Compress Spring 8, also has main air inlet chamber 13, go out air compartment 14 and φ 0.4 control wind entrance 15, in coil, coil obtains when electric described electromagnet assembly 2 dresses, and electromagnet assembly 2 moves down, and opens φ 0.4 and controls wind entrance 15, the inwall of valve body 3 is close in described leather cup 4 its outer rings, and after φ 0.4 control wind entrance 15 is opened, control wind can promote leather cup 4 and drive pistons 5 to do axial motion, described Compress Spring 8 is between valve body 3 and upper valve 7, and generally, upper valve 7 can be close to the passage of closing main air inlet chamber 13 on valve port and going out 14 of air compartments under the effect of Compress Spring 8, in described valve body 3, also offer φ 1.8 exhaust vents 16 of a pair of symmetry.

The utility model is simple in structure, has changed the situation that stucco system on locomotive never has self cleaning function.The long-term normal operation of stucco system, provides reliable guarantee to the traction of locomotive and braking.

accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is that the utility model is in closed condition schematic diagram;

Fig. 3 is that the utility model is in stucco view;

Fig. 4 is that the utility model is in self clean momentary status schematic diagram;

in figure:1-support, 2-electromagnet assembly, 3-valve body, 4-leather cup, 5-piston, 6-lower valve, the upper valve of 7-, 8-Compress Spring, the main air intake intake grill of 9-, 10-exhaust outlet, 11-intake grill, 12-controls wind intake grill, the main air inlet chamber of 13-, and 14-goes out air compartment, and 15-φ 0.4 controls wind entrance, 16-φ 1.8 exhaust vents.

Embodiment:

Referring to Fig. 1, the utility model comprises support 1 and valve body 3, valve body 3 relies on support 1 to be connected on the mounting flange of locomotive, described support 1 itself offers with the air intake passage of intake grill 11 with the air-out passage of exhaust outlet 10, air intake passage divides main air intake passage and controls wind passage, and this two passes is interconnected; And air-out passage bifurcation is controlled two sand sprayer work simultaneously.Described valve body 3 contains dress electromagnet assembly 2, leather cup 4, piston 5, lower valve 6, upper valve 7 and Compress Spring 8 in coil.

Referring to accompanying drawing 2, at this moment coil of the present utility model is in power failure state, and φ 0.4 controls wind entrance 15 and closes, and upper valve 7 is close on valve port, and main air inlet chamber 13 and the passage that goes out 14 of air compartments are closed, and stucco control valve is in closed condition.

Referring to accompanying drawing 3, the coil of the utility model electromagnetic assembly 2 peripheries is in obtaining electricity condition, under electromagnetic force, φ 0.4 control wind entrance 15 is opened, pressure air slowly promotes piston 5 and moves upper valve 7 is opened, so the pressure air of main air inlet chamber 13 enters out air compartment 14 by a pair of φ 1.8 exhaust vents, toward air-out passage, enter sand sprayer again, realize stucco function.

Referring to accompanying drawing 4, when stucco reached after the scheduled time, the coil losing electricity of stucco control valve, φ 0.4 controls wind entrance 15 and is closed, at this moment, piston 5 moves down under the effect of spring 8, in piston 5 folding processes, there is about 0.5 second time to occur the situation that valve port is not closed and lower valve port is opened, now, the pressure wind of main air inlet chamber 13 enters out air compartment 14 simultaneously by a pair of Φ 1.8 exhaust vents 16 and lower valve port, the pressure wind of this strand of unexpected enlargement discharge carries out brute force to the stucco pipeline of sand sprayer and purges, and guaranteeing does not have sand grains residual in stucco pipeline.

Obviously, described embodiment, is only a part of embodiment of the present utility model, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making under creative work prerequisite, and the every other embodiment who obtains belongs to the scope that the utility model is protected.

Claims (1)

1. a locomotive stucco control valve, it relies on support (1) that valve body (3) is connected on the mounting flange of locomotive, in described support (1), offer intake grill (11) and exhaust outlet (10), the pressure air being entered by intake grill (11) can lead to control wind intake grill (12) and the main air intake intake grill (9) of valve body (3) simultaneously, this two pressure air passages intercommunication and general all in closed condition, exhaust outlet (10) communicates with two sand sprayers respectively through air-out passage, it is characterized in that: the valve body of this control valve (3) comprises electromagnet assembly (2), leather cup (4), piston (5), lower valve (6), upper valve (7) and Compress Spring (8), also has main air inlet chamber (13), go out the control wind entrance (15) of air compartment (14) and φ 0.4, in coil, coil obtains when electric for described electromagnet assembly (2) dress, and electromagnet assembly (2) moves down, and opens φ 0.4 and controls wind entrance (15), the inwall of valve body (3) is close in its outer ring of described leather cup (4), and after φ 0.4 control wind entrance (15) is opened, control wind can promote leather cup (4) and drive piston (5) to do axial motion, described Compress Spring (8) is positioned between valve body (3) and upper valve (7), and generally, upper valve (7) can be close under the effect of Compress Spring (8) closes main air inlet chamber (13) and goes out the passage between air compartment (14) on upper valve port, in described valve body (3), also offer φ 1.8 exhaust vents (16) of a pair of symmetry.

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