Electromagnetic drain valve assembly

Abstract

The utility model discloses an electromagnetic liquid release valve assembly which comprises a pressure release valve seat, an upper cover plate is installed on the upper surface of the pressure release valve seat through a plurality of bolts, a logic valve element located in the pressure release valve seat is installed at the bottom of the upper cover plate, a plurality of fixing holes are annularly formed in the circumferential face of the logic valve element, and the fixing holes are communicated with the logic valve element. According to the electromagnetic drain valve assembly, the pressure pilot valve, the electromagnetic valve, the pressure sensor, the flow control valve and the temperature sensor are arranged to drive the logic valve element to operate, and then rapid action of the logic valve element can be conveniently achieved; the pressure relief device is simple in structure and convenient to use, damage to the electro-hydraulic control system caused by untimely pressure relief is prevented, a pressure pilot valve and an electromagnetic valve are conveniently protected by arranging a connecting lug and a protective cover, hoisting transportation is also facilitated, and a pressure sensor, a flow control valve, a temperature sensor and an aviation plug are conveniently protected by arranging a protective shell.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control, and particularly relates to an electromagnetic liquid drain valve assembly. Background Technique

[0002] The hydraulic valve in the electro-hydraulic control system is a basic component in the electro-hydraulic control system. By controlling the hydraulic valve, the orderly movement of each oil cylinder of the hydraulic support can be realized. The electromagnetic liquid drain valve belongs to a safety valve. When the hydraulic pressure reaches a predetermined value, the spool in the middle will act to relieve the pressure of the system and protect the electro-hydraulic control system. The existing electromagnetic liquid drain valve assembly controls the spool to move relatively slowly, and the electro-hydraulic control system will be damaged due to untimely pressure relief. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide an electromagnetic liquid drain valve assembly, which is convenient to realize the rapid movement of the spool, prevent the electro-hydraulic control system from being damaged due to untimely pressure relief, and can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme:

[0005] An electromagnetic liquid drain valve assembly includes a pressure relief valve seat. The upper surface of the pressure relief valve seat is installed with an upper cover plate through a plurality of bolts. The bottom of the upper cover plate is installed with a logic valve spool located inside the pressure relief valve seat. A plurality of fixing holes are annularly formed on the circumferential surface of the logic valve spool. A liquid drain port and a first oil inlet are respectively formed on the front side surface of the pressure relief valve seat. A plurality of second oil inlets are formed on the lower surface of the pressure relief valve seat. A pressure sensor, a flow control valve and a temperature sensor are respectively installed on the side surface of the pressure relief valve seat. A pressure pilot valve and an electromagnetic valve are respectively installed on the upper surface of the upper cover plate.

[0006] As a preferred technical scheme of the utility model, an installation seat is arranged on the lower surface of the upper cover plate, and an external thread matched with the logic valve spool is arranged on the outer surface of the installation seat.

[0007] As a preferred technical scheme of the utility model, a spring connected to the upper cover plate is installed inside the logic valve spool.

[0008] As a preferred technical scheme of the utility model, the plurality of second oil inlets are arranged in a straight line, and a plurality of installation holes are formed around each second oil inlet.

[0009] As a preferred technical scheme of the utility model, a plurality of aviation plugs are arranged at the lower part of the side surface of the pressure relief valve seat.

[0010] As a preferred technical solution of the present utility model, a protective shell for protecting an aviation plug, a pressure sensor, a flow control valve, and a temperature sensor is installed on the side of the pressure relief valve seat.

[0011] As a preferred technical solution of the present utility model, a protective cover for protecting a pressure pilot valve and a solenoid valve is installed on the upper part of the upper cover plate, and two connecting ears are symmetrically arranged on both sides of the protective cover.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By setting a pressure pilot valve, a solenoid valve, a pressure sensor, a flow control valve, and a temperature sensor to drive the operation of the logic valve spool, it is convenient to realize the rapid movement of the logic valve spool, prevent damage to the electro-hydraulic control system caused by untimely pressure relief. By setting the connecting ears and the protective cover, it is not only convenient to protect the pressure pilot valve and the solenoid valve, but also convenient for hoisting and transportation. By setting the protective shell, it is convenient to protect the pressure sensor, the flow control valve, the temperature sensor, and the aviation plug, and prevent damage to the electro-hydraulic control system caused by untimely pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present utility model.

[0015] Figure 2 It is a schematic bottom structural diagram of the present utility model.

[0016] Figure 3 It is a schematic installation structure diagram of the logic valve spool of the present utility model.

[0017] Figure 4 It is a schematic partial sectional structural diagram of the present utility model.

[0018] Figure 5 It is a schematic spring installation structure diagram of the present utility model.

[0019] In the figure: liquid discharge port 1, first oil inlet 2, second oil inlet 3, pressure sensor 4, flow control valve 5, temperature sensor 6, aviation plug 7, connecting ear 8, protective cover 9, protective shell 10, pressure pilot valve 11, logic valve spool 12, pressure relief valve seat 13, upper cover plate 14, solenoid valve 15, mounting seat 16, spring 17, fixing hole 18. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0022] An electromagnetic liquid discharge valve assembly includes a pressure relief valve seat 13. The upper surface of the pressure relief valve seat 13 is installed with an upper cover plate 14 through a plurality of bolts. The bottom of the upper cover plate 14 is installed with a logic valve spool 12 located inside the pressure relief valve seat 13. A plurality of fixing holes 18 are annularly formed on the circumferential surface of the logic valve spool 12. A liquid discharge port 1 and a first oil inlet 2 are respectively formed on the front side surface of the pressure relief valve seat 13. A plurality of second oil inlets 3 are formed on the lower surface of the pressure relief valve seat 13. A pressure sensor 4, a flow control valve 5 and a temperature sensor 6 are respectively installed on the side surface of the pressure relief valve seat 13. A pressure pilot valve 11 and a solenoid valve 15 are respectively installed on the upper surface of the upper cover plate 14. The hydraulic pressure of the hydraulic oil passing through this assembly is detected by the pressure sensor 4, and the temperature of the hydraulic oil passing through this assembly is detected by the pressure sensor 4. The solenoid valve 15 is combined with the pressure pilot valve 11 to enable the logic valve spool 12 to achieve faster action, prevent damage to the electro-hydraulic control system due to untimely pressure relief, and improve the operating stability of the electro-hydraulic control system.

[0023] The lower surface of the upper cover plate 14 is provided with a mounting seat 16. The outer surface of the mounting seat 16 is provided with an external thread that cooperates with the logic valve spool 12, and the logic valve spool 12 is installed through the external thread of the mounting seat 16.

[0024] A spring 17 connected to the upper cover plate 14 is installed inside the logic valve spool 12 to assist the action of the logic valve spool 12 through the spring 17.

[0025] The plurality of second oil inlets 3 are arranged in a straight line, and a plurality of mounting holes are formed around each second oil inlet 3, and other pipelines are connected to the second oil inlet 3 through the plurality of mounting holes.

[0026] A plurality of aviation plugs 7 are arranged at the lower part of the side surface of the pressure relief valve seat 13, and an external circuit is connected through the plurality of aviation plugs 7.

[0027] A protective shell 10 for protecting the aviation plug 7, the pressure sensor 4, the flow control valve 5 and the temperature sensor 6 is installed on the side surface of the pressure relief valve seat 13. The aviation plug 7, the pressure sensor 4, the flow control valve 5 and the temperature sensor 6 are supported and protected through the protective shell 10 to prevent collision during operation.

[0028] A protective cover 9 for protecting the pressure pilot valve 11 and the solenoid valve 15 is installed on the upper part of the upper cover plate 14. Two connecting ears 8 are symmetrically arranged on both sides of the protective cover 9. It is convenient to hoist this assembly through the two connecting ears 8. The pressure pilot valve 11 and the solenoid valve 15 are protected by the protective cover 9 to prevent external bumps during operation.

[0029] The pressure sensor 4, the flow control valve 5, the temperature sensor 6, the pressure pilot valve 11, the logic valve spool 12, the external controller and the solenoid valve 15 all adopt common models on the market. The pressure sensor 4, the flow control valve 5, the temperature sensor 6, the pressure pilot valve 11, the logic valve spool 12 and the solenoid valve 15 are all electrically connected to the external controller, and their connection relationship is a common means in the prior art.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic liquid discharge valve assembly, comprising a pressure relief valve seat (13), characterized in that: The upper surface of the pressure relief valve seat (13) is mounted with an upper cover plate (14) through a plurality of bolts. A logic valve spool (12) located within the pressure relief valve seat (13) is mounted at the bottom of the upper cover plate (14). A plurality of fixing holes (18) are annularly formed on the peripheral surface of the logic valve spool (12). A liquid discharge port (1) and a first oil inlet (2) are respectively formed on the front side surface of the pressure relief valve seat (13). A plurality of second oil inlets (3) are formed on the lower surface of the pressure relief valve seat (13). A pressure sensor (4), a flow control valve (5), and a temperature sensor (6) are respectively mounted on the side surface of the pressure relief valve seat (13). A pressure pilot valve (11) and a solenoid valve (15) are respectively mounted on the upper surface of the upper cover plate (14).

2. The electromagnetic drain valve assembly according to claim 1, wherein: An installation seat (16) is provided on the lower surface of the upper cover plate (14). An external thread that mates with the logic valve spool (12) is provided on the outer surface of the installation seat (16).

3. The electromagnetic drain valve assembly according to claim 1, characterized in that: A spring (17) connected to the upper cover plate (14) is installed inside the logic valve spool (12).

4. The electromagnetic drain valve assembly according to claim 1, wherein: The plurality of second oil inlets (3) are arranged in a line. A plurality of installation holes are formed around each of the second oil inlets (3).

5. The electromagnetic drain valve assembly according to claim 1, wherein: A plurality of aviation plugs (7) are provided at the lower part of the side surface of the pressure relief valve seat (13).

6. The electromagnetic drain valve assembly according to claim 5, wherein: A protective housing (10) for protecting the aviation plugs (7), the pressure sensor (4), the flow control valve (5), and the temperature sensor (6) is mounted on the side surface of the pressure relief valve seat (13).

7. The electromagnetic drain valve assembly according to claim 1, wherein: A protective cover (9) for protecting the pressure pilot valve (11) and the solenoid valve (15) is mounted on the upper part of the upper cover plate (14). Two connecting ears (8) are symmetrically provided on both side surfaces of the protective cover (9).

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