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 channel is arranged in the integrated valve block; a two-way cartridge valve insertion hole communicated with the internal hydraulic flow channel is formed in the surface of the integrated valve block, a two-way cartridge valve is inserted into the two-way cartridge valve insertion hole, and a hole in the two-way cartridge valve is communicated with the internal hydraulic flow channel of the integrated valve block; the cover plate covers the two-way cartridge valve; a proximity switch for sensing the end face of the tail end of a valve element of the two-way cartridge valve is arranged on the cover plate, a one-way throttle valve and a one-way valve are further arranged on the cover plate, the two-way overflow valve is arranged on the one-way throttle valve 7, and the one-way throttle valve is communicated with the two-way cartridge valve; a throttling hole is formed in the bottom of the cover plate; a pipeline communicated with the one-way adjusting valve is arranged in the cover plate, and the pipeline is communicated with the one-way valve and then communicated with the hydraulic flow channel in the integrated valve block through the throttling hole.

Description

Technical Field

[0001] This utility model relates to a reversing valve assembly. Background Technology

[0002] With the widespread application of large-scale engineering machinery, the corresponding demand for hydraulic system flow is also increasing. Currently, hydraulic spool valves with a nominal diameter of DN82 are available in the domestic and international markets. However, a single spool valve cannot meet the application requirements of ultra-large hydraulic systems, and it is difficult to solve the problem of hydraulic system synchronization by using two sets of spool valves in parallel. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a reversing valve assembly.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] The reversing valve assembly includes an integrated valve block (1) with an internal hydraulic flow channel, a two-way cartridge valve (2), a two-way relief valve (3), and a cover plate (4); the integrated valve block (1) has a two-way cartridge valve socket (5) communicating with the internal hydraulic flow channel on its surface, the two-way cartridge valve (2) is inserted into the two-way cartridge valve socket (5), and the hole on the two-way cartridge valve (2) communicates with the internal hydraulic flow channel of the integrated valve block (1); the cover plate (4) covers the two-way cartridge valve (2); the cover plate (4) has a sensor The cover plate (4) is equipped with a proximity switch (6) at the end face of the valve core of the two-way cartridge valve, and a one-way throttle valve (7) and a one-way valve (8) are also provided on the cover plate (4). The two-way overflow valve (3) is set on the one-way throttle valve (7). The one-way throttle valve (7) is connected to the two-way cartridge valve (2). The bottom of the cover plate (4) is provided with a throttle hole. The cover plate (4) is provided with a pipe connected to the one-way regulating valve (7). The pipe is connected to the one-way valve (8) and then connected to the hydraulic flow channel inside the integrated valve block (1) through the throttle hole.

[0006] Preferably, the reversing valve assembly has a DN100 bore.

[0007] The present invention will be further described below:

[0008] The reversing valve assembly integrates a two-way relief valve and a two-way cartridge valve. The opening and closing time of the two-way cartridge valve can be controlled by a one-way throttle valve on the cover plate. The reversing impact during valve assembly reversal can be adjusted by regulating the size of the throttle orifice of the one-way valve and the main system oil replenishment. Furthermore, the presence of any abnormalities in the two-way cartridge valve core can be detected by a proximity switch on the cover plate, providing a reliable basis for subsequent troubleshooting and digitization.

[0009] Specifically, in this utility model, the integrated valve block is made of an integral forging, and all hydraulic flow channels are integrated inside the valve block. This high level of integration reduces the number of intermediate hydraulic pipeline connections and hydraulic leakage points, thereby improving overall reliability.

[0010] The two-way cartridge valve core adopts a buffer structure. When the valve core closes to the end, the end throttling surface plays a throttling and buffering role, while reducing speed and noise. The pressure loss is small when a large flow rate passes through, and the switching response speed is fast.

[0011] The two-way relief valve, one-way throttle valve, check valve, and proximity switch are integrated into the cover plate. Adjusting the opening and closing speed of the two-way cartridge valve is achieved by regulating the opening area of ​​the one-way throttle valve and the throttling orifice at the front of the check valve, thus regulating the reversing buffer. This allows the two-way cartridge valve to open quickly and close slowly, achieving the desired effect. The proximity switch detects normal operation by sensing the end face of the two-way cartridge valve core, facilitating troubleshooting. Simultaneously, this signal can be transmitted to compatible equipment, providing corresponding dynamic simulation for digital information and 3D digital twins.

[0012] In summary, this utility model has developed a DN100 diameter two-way directional valve assembly for ultra-large hydraulic systems in China, filling a gap in the current domestic and international markets. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cover plate structure in this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the cover plate and the two-way cartridge valve combined in this utility model;

[0015] Figure 3 This is a schematic diagram of the integrated valve block in this utility model.

[0016] In the diagram: 1. Integrated valve block; 2. Two-way cartridge valve; 3. Two-way relief valve; 4. Cover plate; 5. Two-way cartridge valve socket; 6. Proximity switch; 7. One-way throttle valve; 8. One-way valve. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0018] See Figures 1 to 3The reversing valve assembly includes an integrated valve block 1 with an internal hydraulic flow channel, a two-way cartridge valve 2, a two-way relief valve 3, and a cover plate 4. The integrated valve block 1 has a two-way cartridge valve insertion hole 5 on its surface, which communicates with the internal hydraulic flow channel. The two-way cartridge valve 2 is inserted into the two-way cartridge valve insertion hole 5, and the hole on the two-way cartridge valve 2 communicates with the internal hydraulic flow channel of the integrated valve block 1. The cover plate 4 covers the two-way cartridge valve 2. The cover plate 4 has a proximity switch 6 that senses the end face of the two-way cartridge valve core. The cover plate 4 also has a one-way throttle valve 7 and a one-way valve 8. The two-way relief valve 3 is located on the one-way throttle valve 7, and the one-way throttle valve 7 communicates with the two-way cartridge valve 2. The bottom of the cover plate 4 has a throttle hole. The cover plate 4 has a pipe communicating with the one-way regulating valve 7, which communicates with the one-way valve 8 and then with the internal hydraulic flow channel of the integrated valve block 1 through the throttle hole. The reversing valve assembly has a DN100 diameter.

Claims

1. A reversing valve assembly, characterized in that, The reversing valve assembly includes an integrated valve block (1) with an internal hydraulic flow channel, a two-way cartridge valve (2), a two-way relief valve (3), and a cover plate (4); the integrated valve block (1) has a two-way cartridge valve socket (5) communicating with the internal hydraulic flow channel on its surface, the two-way cartridge valve (2) is inserted into the two-way cartridge valve socket (5), and the hole on the two-way cartridge valve (2) communicates with the internal hydraulic flow channel of the integrated valve block (1); the cover plate (4) covers the two-way cartridge valve (2); the cover plate (4) has a sensor The cover plate (4) is equipped with a proximity switch (6) at the end face of the valve core of the two-way cartridge valve, and a one-way throttle valve (7) and a one-way valve (8) are also provided on the cover plate (4). The two-way overflow valve (3) is set on the one-way throttle valve (7). The one-way throttle valve (7) is connected to the two-way cartridge valve (2). The bottom of the cover plate (4) is provided with a throttle hole. The cover plate (4) is provided with a pipe connected to the one-way throttle valve (7). The pipe is connected to the one-way valve (8) and then connected to the hydraulic flow channel inside the integrated valve block (1) through the throttle hole.

2. The reversing valve assembly as described in claim 1, characterized in that, The reversing valve assembly has a DN100 diameter.

Images