阅读说明：本技术 城轨车辆气路控制系统用电磁阀 (Electromagnetic valve for urban rail vehicle gas circuit control system ) 是由 丁廷取 杨昌国 于 2020-06-24 设计创作，主要内容包括：城轨车辆气路控制系统用电磁阀,包括阀座和连接在阀座上端的主体以及设置在阀座底端的端盖,所述阀座上分别设有输入腔和输出腔,所述阀座体内设有用以连通所述输入腔和所述输出腔的排气腔,位于排气腔一端的所述阀座上设有阀芯,所述阀芯下端设有阀门密封垫,所述阀门密封垫装在阀门内孔中形成阀门组件,所述阀门组件下端设置有阀门弹簧,所述阀芯上设有根据气源连通的阀芯通气孔,位于所述阀座内部嵌装有螺母,位于所述阀芯上端的所述主体上设有衔铁,所述衔铁上设有弹簧,所述主体上设有用于与螺母固定连接的螺钉。本发明阀座采用等壁结构设计、可避免阀座注塑成型收缩变形,而且还能减少零件数量,降低产品成本,提高生产效率,值得推广。(City rail vehicle gas circuit solenoid valve for control system, include the disk seat and connect the main part in the disk seat upper end and set up the end cover in the disk seat bottom, be equipped with input chamber and output chamber on the disk seat respectively, the internal intercommunication that is used for of disk seat the input chamber with the exhaust chamber of output chamber is located exhaust chamber one end be equipped with the case on the disk seat, the case lower extreme is equipped with the valve packing pad, the valve packing pad dress forms the valve member in the valve hole, the valve member lower extreme is provided with valve spring, be equipped with the case air vent according to the air supply intercommunication on the case, be located the inside nut that inlays of disk seat is equipped with, is located the case upper end be equipped with armature in the main part, be equipped with the spring on the armature, be equipped. The valve seat adopts the equal-wall structure design, can avoid the shrinkage deformation of the injection molding of the valve seat, can also reduce the number of parts, reduces the product cost, improves the production efficiency, and is worthy of popularization.)

1. City rail vehicle solenoid valve for gas circuit control system includes disk seat (1) and connects main part (2) and end cover (3) of setting in disk seat (1) bottom in disk seat (1) upper end, its characterized in that: an input cavity (4) and an output cavity (5) are respectively arranged on the valve seat (1), an exhaust cavity (6) for communicating the input cavity (4) and the output cavity (5) is arranged in the valve seat (1), a valve core (7) is arranged on the valve seat (1) at one end of the exhaust cavity (6), the lower end of the valve core (7) is provided with a valve sealing gasket (8), the valve sealing gasket (8) is arranged in an inner hole of the valve to form a valve component (9), a valve spring (10) is arranged at the lower end of the valve component (9), a valve core vent hole (11) communicated according to an air source is arranged on the valve core (7), a nut (12) is embedded in the valve seat (1), an armature (13) is arranged on the main body (2) at the upper end of the valve core (7), the armature (13) is provided with a spring (14), and the main body (2) is provided with a screw (121) fixedly connected with the nut (12).

2. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 1, characterized in that: main part (2) are including support (15), shell (16), coil former (17), valve seat subassembly (18), inserted sheet subassembly (19), coil (20) and guide pin bushing (21), wherein valve seat subassembly (18) set up just upper end armature (13), lie in that door seat subassembly (18) upper end both sides are equipped with coil former (17), coil former (17) lower extreme is connected with coil (20), and armature (13) the outside that lies in on main part (2) is equipped with guide pin bushing (21), support (15) are equipped with support convex surface (22) outward, support convex surface (22) expose outside main part (2) shell (16).

3. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 1, characterized in that: and a valve core sealing molded surface (23) is formed on the lower surface of the valve core (7) and the upper surface of the valve component (9).

4. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 1, characterized in that: the lower surface of the valve component (9) and the valve spring (10) form a valve seat sealing profile (24).

5. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 1, characterized in that: and sealing rings (25) are arranged in a groove formed after the valve core (7) and the valve seat (1) are assembled and between the valve core (7) and the valve seat (1).

6. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 1, characterized in that: the nut (12) and the valve seat (1) are integrated through injection molding and plastic coating.

7. The electromagnetic valve for the urban rail vehicle gas circuit control system according to claim 2, characterized in that: the support (15) is formed by stamping and bending.

Technical Field

The invention relates to the technical field of vehicle valve bodies, in particular to an electromagnetic valve for an urban rail vehicle gas circuit control system.

Background

With the rapid development of high-speed railways in China, the use frequency of rail vehicles is continuously improved, the running time is increased, and higher requirements are put forward on the quality of related key parts in order to ensure the running safety and reliability of rail transit vehicles.

The solenoid valve that present city railcar used adopts self-tapping screw to be connected between main part and the disk seat, twists in the plastics hole of disk seat (see fig. 9) through self-tapping screw, and this structure is unfavorable for the dismouting, and repeated dismouting is several, and the plastics screw that leans on self-tapping screw to form on the disk seat will damage, has the main part and is connected unreliable, disk seat scrapping problem between the disk seat. Secondly, the disk seat is plastic injection moulding, and the disk seat part is equipped with the attenuate fabrication hole and for avoiding shrinkage deformation, has increased the fabrication hole (see figure 8), and then needs to increase end cap, sealing washer and stop pin part structure again and guarantee that the fabrication hole is sealed, consequently assembles the problem that takes a lot of work, takes time, and is with high costs, production efficiency low grade. Thirdly, the metal support in the main structure is totally enclosed in the plastic shell by plastic, which is not beneficial to the heat dissipation of the electromagnetic valve and is easy to cause the burning of the electromagnetic valve or the performance reduction.

Disclosure of Invention

The invention aims to: the electromagnetic valve for the urban rail vehicle gas circuit control system is provided, the problems existing in the prior art are solved, the working reliability is improved on the basis that the electromagnetic valve guarantees the on-off and exhaust functions of pipeline gas flow, the number of parts is reduced, the product cost is reduced, and the production efficiency is improved.

In order to realize the purpose, the following technical scheme is adopted: the electromagnetic valve for the urban rail vehicle gas circuit control system comprises a valve seat, a main body connected to the upper end of the valve seat and an end cover arranged at the bottom end of the valve seat, the valve seat is respectively provided with an input cavity and an output cavity, the valve seat body is internally provided with an exhaust cavity for communicating the input cavity and the output cavity, the valve seat at one end of the exhaust cavity is provided with a valve core, the lower end of the valve core is provided with a valve sealing gasket which is arranged in an inner hole of the valve to form a valve component, the lower end of the valve component is provided with a valve spring, the valve core is provided with a valve core vent hole communicated according to an air source, a nut is embedded in the valve seat, the main body positioned at the upper end of the valve core is provided with an armature iron, the armature is provided with a spring, the main body is provided with a screw fixedly connected with a nut, and the other end of the exhaust cavity is also provided with a sealing gasket.

Preferably, the main part includes support, shell, coil former, valve seat subassembly, inserted sheet subassembly, coil and guide pin bushing, wherein valve seat subassembly sets up just upper end is located door seat subassembly upper end both sides and is equipped with the coil former, the coil former lower extreme is connected with the coil, is located the armature outside in the main part and is equipped with the guide pin bushing, the support is equipped with the support convex surface outward, the support convex surface exposes outside the main part shell, and this support convex surface exposes outside the plastic housing of main part and contacts with the air when the main part package is moulded, reaches quick radiating purpose.

Preferably, the lower surface of the valve element and the upper surface of the valve component form a valve element sealing profile.

Preferably, the valve component lower surface forms a valve seat sealing profile with the valve spring.

Preferably, sealing rings are arranged in a groove formed after the valve core and the valve seat are assembled and between the valve core and the valve seat.

Preferably, the nut and the valve seat are integrally molded by injection molding.

Preferably, the bracket is formed by stamping and bending.

The invention has the following beneficial effects: the electromagnetic valve structure designed by the invention can realize the on-off and exhaust functions of the airflow of a pipeline system, and the heat generated by the electromagnetic valve can be quickly dissipated by the convex surface structure design of the bracket, so that the electromagnetic valve is prevented from being burnt and has higher working reliability; the embedded nut is embedded when the valve seat is coated with plastic, the screw of the valve seat and the main body can be disassembled and assembled for many times, and the connection mode is more reliable and convenient; the valve seat adopts the equal-wall structure design, not only can avoid the shrinkage deformation of the injection molding of the valve seat, but also can reduce the number of parts, reduce the product cost and improve the production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of an electromagnetic valve for an urban rail vehicle gas circuit control system.

FIG. 2 is a schematic diagram of a partially enlarged structure of an electromagnetic valve for an urban rail vehicle gas circuit control system.

FIG. 3 is a schematic diagram of the front side structure of a solenoid valve seat for an urban rail vehicle gas circuit control system.

FIG. 4 is a schematic diagram of a top view structure of a solenoid valve seat for an urban rail vehicle air path control system.

FIG. 5 is a schematic view of a connection structure of an electromagnetic valve embedded nut and a screw for an urban rail vehicle gas circuit control system.

FIG. 6 is a schematic structural diagram of a main body of an electromagnetic valve for an urban rail vehicle air path control system.

FIG. 7 is a schematic diagram of a structure of a solenoid valve bracket for an urban rail vehicle air circuit control system.

Fig. 8 is a schematic front view of a conventional valve seat.

Fig. 9 is a schematic top view of a conventional valve seat.

In the figure, 1-valve seat, 2-body, 3-end cover, 4-input cavity, 5-output cavity, 6-exhaust cavity, 7-valve core, 8-valve sealing gasket, 9-valve component, 10-valve spring, 11-valve core vent hole, 12-nut, 13-armature, 14-spring, 15-support, 16-shell, 17-coil rack, 18-valve seat component, 19-insert component, 20-coil, 21-guide sleeve, 22-support convex surface, 23-valve core sealing profile, 24-valve seat sealing profile, 25-sealing ring, 26-sealing gasket, 27-process hole, 28-plastic hole and 121-screw.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to the attached drawings 1-9, an electromagnetic valve for an urban rail vehicle gas circuit control system is used for controlling the on-off and discharge of gas flow in the system, and comprises a valve seat 1, a main body 2 connected to the upper end of the valve seat 1, and an end cover 3 arranged at the bottom end of the valve seat 1, wherein an input cavity 4 and an output cavity 5 are respectively arranged on the valve seat 1, an exhaust cavity 6 for communicating the input cavity 4 with the output cavity 5 is arranged in the valve seat 1, a valve core 7 is arranged on the valve seat 1 positioned at one end of the exhaust cavity 6, a valve sealing gasket 8 is arranged at the lower end of the valve core 7, the valve sealing gasket 8 is arranged in a valve inner hole to form a valve component 9, a valve spring 10 is arranged at the lower end of the valve component 9, a valve core vent hole 11 communicated according to a gas source is arranged on the valve core 7, the armature 13 is provided with a spring 14, the main body 2 is provided with a screw 121 fixedly connected with the nut 12, and the other end of the exhaust cavity 6 is also provided with a sealing gasket 26.

Main part 2 includes support 15, shell 16, coil former 17, valve seat subassembly 18, inserted sheet subassembly 19, coil 20 and guide pin bushing 21, wherein valve seat subassembly 18 sets up directly over armature 13 is located 18 upper end both sides of door seat subassembly and is equipped with coil former 17, coil former 17 lower extreme is connected with coil 20, is located the armature 13 outside on main part 2 and is equipped with guide pin bushing 21, support 15 is equipped with support convex surface 22 outward, support convex surface 22 exposes outside main part 2 shell 16, and this support convex surface exposes outside the plastic casing of main part and air contact when the main part package is moulded, reaches quick radiating purpose.

The lower surface of the valve element 7 and the upper surface of the valve component 9 form a valve element sealing profile 23.

The lower surface of the valve component 9 forms with the valve spring 10 a seat sealing profile 24.

And sealing rings 25 are arranged in a groove formed after the valve core 7 is assembled with the valve seat 1 and between the valve core 7 and the valve seat 1.

The nut 12 and the valve seat 1 are integrated by injection molding and plastic coating.

The support 15 is formed by stamping and bending.

The working principle of the invention is as follows: when the electromagnetic valve is not electrified, under the action of the elastic force of the spring 14, the elastic force of the valve spring 10 and the air pressure of the input cavity 4, the resultant force transmits the force to the valve component 9 through the armature 13, the valve sealing gasket 8 in the valve component 9 is attached to the valve seat sealing molded surface 24 in the valve seat 1, the tightness of the input cavity 4, the output cavity 5 and the exhaust cavity 6 is ensured, and at the moment, the output cavity 5 is communicated with the exhaust cavity 6 through the valve core vent hole 11 in the valve core 7.

When the electromagnetic valve is electrified, the electromagnetic force generated by the coil 20 overcomes the elastic force of the spring 14, and the armature 13 is attracted to one side of the valve seat component 18, at the moment, the valve component 9 is separated from the valve seat sealing molded surface 24 under the action of the valve spring 10 and the air pressure, and the input cavity 4 is communicated with the output cavity 5; the valve sealing gasket 8 is attached to the valve core sealing molded surface 23, so that the output cavity 5 is sealed with the exhaust cavity 6. Meanwhile, according to the actual use requirement of the electromagnetic valve, an air source can be input from the input cavity or the output cavity, and the normally closed or normally open function of the electromagnetic valve is realized.

The valve seat 1 is provided with the metal embedded nut 12 which is integrally formed with the valve seat 1 in a plastic coating mode, so that the valve seat can be dismounted and mounted repeatedly without being damaged by the screws 121.

The valve seat is internally provided with an airflow channel input cavity 4, an output cavity 5 and an exhaust cavity 6, and through the structural design with equal wall thickness, the shrinkage deformation of injection molding parts can be effectively avoided, and meanwhile, the process plugs, the sealing rings and the elastic cylindrical pin parts can be reduced.

The bracket 15 used in the structure of the invention is formed by stamping and bending, and is provided with the bracket convex surface 22, when the main body 2 is molded by plastic coating, the bracket convex surface 22 is exposed outside the main body shell 16, so that the heat generated by the electromagnetic valve can be quickly radiated.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.