CN-224228977-U - Reversing valve group

Abstract

The utility model discloses a reversing valve group which comprises an integrated valve block, a two-way cartridge valve, a two-way overflow valve and a cover plate, wherein a hydraulic flow passage is arranged in the integrated valve block, a two-way cartridge valve jack communicated with the internal hydraulic flow passage is arranged on the surface of the integrated valve block, the two-way cartridge valve is inserted into the two-way cartridge valve jack, a hole on the two-way cartridge valve is communicated with the hydraulic flow passage in the integrated valve block, the cover plate is covered on the two-way cartridge valve, a proximity switch for sensing the end surface of the valve core of the two-way cartridge valve is arranged on the cover plate, a one-way throttle valve and a one-way valve are also arranged on the cover plate, the two-way overflow valve is arranged on the one-way throttle valve 7, the one-way throttle valve is communicated with the two-way cartridge valve, a throttling hole is arranged at the bottom of the cover plate, a pipeline communicated with the one-way regulating valve is arranged in the cover plate, and the pipeline is communicated with the hydraulic flow passage in the integrated valve block through the throttling hole after being communicated with the one-way valve.

Inventors

• YIN SHENG
• ZHANG PENGFEI
• LI FUXING
• LI YULIN
• CHEN JIAHAO
• ZHAO YAOZHONG

Assignees

• 飞翼股份有限公司

Dates

Publication Date

20260512

Application Date

20250101

Claims (2)

1. 1. The reversing valve bank is characterized by comprising an integrated valve block (1) with a hydraulic flow passage arranged therein, a two-way cartridge valve (2), a two-way overflow valve (3) and a cover plate (4), wherein a two-way cartridge valve jack (5) communicated with the hydraulic flow passage arranged on the surface of the integrated valve block (1), the two-way cartridge valve (2) is inserted into the two-way cartridge valve jack (5), a hole on the two-way cartridge valve (2) is communicated with the hydraulic flow passage arranged inside the integrated valve block (1), the cover plate (4) is covered on the two-way cartridge valve (2), a proximity switch (6) for sensing the tail end surface of a valve core of the two-way cartridge valve is arranged on the cover plate (4), a one-way throttle valve (7) and a one-way valve (8) are further arranged on the cover plate (4), the one-way throttle valve (7) is communicated with the two-way cartridge valve (2), the bottom of the cover plate (4) is provided with a throttle hole, and a pipeline (7) is arranged in the cover plate (4) and is communicated with the hydraulic flow passage (1) through the integrated valve.
2. 2. The reversing valve set of claim 1, wherein the reversing valve set is a DN100 drift diameter.

Description

Reversing valve group Technical Field The utility model relates to a reversing valve group. Background With the wide application of large-scale engineering machinery, the flow requirement of a corresponding hydraulic system is also larger and larger, the current DN82 drift diameter of the hydraulic slide valve in domestic and overseas markets is available, but a single slide valve cannot meet the application of an oversized hydraulic system, and the problem of synchronism of the hydraulic system is difficult to solve by adopting two groups of slide valves in parallel connection. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides a reversing valve assembly. In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: The reversing valve group comprises an integrated valve block (1) internally provided with a hydraulic flow passage, a two-way cartridge valve (2), a two-way overflow valve (3) and a cover plate (4), wherein a two-way cartridge valve jack (5) communicated with the internal hydraulic flow passage is arranged on the surface of the integrated valve block (1), the two-way cartridge valve (2) is inserted into the two-way cartridge valve jack (5), a hole in the two-way cartridge valve (2) is communicated with the hydraulic flow passage in the integrated valve block (1), the cover plate (4) is covered on the two-way cartridge valve (2), a proximity switch (6) for sensing the tail end surface of the valve core of the two-way cartridge valve is arranged on the cover plate (4), a one-way throttle valve (7) and a one-way valve (8) are further arranged on the cover plate (4), the one-way throttle valve (7) is communicated with the two-way cartridge valve (2), an orifice is arranged at the bottom of the cover plate (4), a pipeline communicated with the one-way valve (7) is arranged in the cover plate (4), and the pipeline is communicated with the hydraulic flow passage through the integrated valve (1). Preferably, the reversing valve group is DN100 drift diameter. The utility model is further described below: The reversing valve group integrates the two-way overflow valve and the two-way cartridge valve, the reversing time of opening and closing of the two-way cartridge valve can be realized through the one-way throttle valve on the cover plate, the reversing impact during reversing of the valve group can be regulated by regulating the orifice size of the one-way valve and the oil supplementing of the main system, whether the valve core of the two-way cartridge valve is abnormal or not can be detected through the proximity switch on the cover plate, and a reliable basis is provided for subsequent fault elimination and digitization. Specifically, in the utility model, the integrated valve block adopts the integral forging, all the hydraulic flow channels are integrated in the valve block, the integration is high, the connection and hydraulic leakage points of the hydraulic pipeline adopted in the middle are reduced, and the integral reliability is improved. The two-way cartridge valve core adopts a buffer structure, when the valve core is closed to the tail end, the end throttling surface plays a role in throttling and buffering, meanwhile, the speed and noise are reduced, the pressure loss is small when large flow passes, and the reversing response speed is high. The two-way overflow valve, the one-way throttle valve, the one-way valve and the proximity switch are integrally designed on the cover plate, and the opening and closing speeds of the two-way cartridge valve are adjusted by adjusting the opening area of the one-way throttle valve and the throttling hole at the front end of the one-way valve together so as to adjust reversing buffering, so that the two-way cartridge valve has the characteristics of high opening speed, low closing speed and the like, and an ideal effect is achieved. The proximity switch detects whether the two-way plug-in valve core works normally or not through sensing the tail end surface of the two-way plug-in valve core, so that convenience is brought to abnormal troubleshooting, and meanwhile, the signal can be transmitted to matched equipment to provide corresponding dynamic simulation for digital information and 3D digital twinning. In a word, the utility model develops a two-way reversing valve group with DN100 drift diameter aiming at the domestic oversized hydraulic system, and fills the gap of the current domestic and foreign markets. Drawings FIG. 1 is a schematic view of a cover plate structure according to the present utility model; FIG. 2 is a schematic diagram of the combination of a cover plate and a two-way cartridge valve according to the present utility model; Fig. 3 is a schematic structural diagram of an integrated valve block according to the present utility model. 1, An integrated valve block; 2, a two-way cartridge valve, 3, a two-way overflow valve, 4, a cover p