Integrated threaded cartridge valve group of hydraulic system of grouting pump

Abstract

The utility model discloses a kind of integrated threaded plug-in valve groups of grouting pump hydraulic system, it includes valve body, hydraulic element is connected on the valve body, the hydraulic element includes overflow valve, three-position four-way electromagnetic reversing valve, first hydraulic reversing valve, second hydraulic reversing valve, third hydraulic reversing valve, first differential pressure signaling valve, second differential pressure signaling valve, the surface of the valve body is equipped with oil outlet, main cylinder oil port, signal oil port, poppet cylinder oil port, flow channel is opened in the valve body, each oil port and the oil port of each hydraulic element are communicated by corresponding flow channel.The integrated valve group of the utility model adopts threaded plug-in hydraulic valve, hydraulic flow channel is all communicated from valve block interior, reduces external connecting pipeline, and valve group has the characteristics of compact structure, small space occupation, reasonable layout, easy maintenance, and can meet the demand of high-pressure hydraulic grouting pump of large flow, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic grouting pump technology, and in particular to an integrated threaded cartridge valve assembly for a grouting pump hydraulic system. Background Technology

[0002] With the government's vigorous promotion of urban subway construction, most companies now inject a scale-forming mortar between the tunnel boring machine's (TBM) tiles using grouting pumps. This reduces labor input, improves operational efficiency, and significantly reduces overall operating costs. The pumping volume requirements of the grouting pump vary depending on the characteristics of different working conditions, thus placing different demands on the hydraulic system. Due to the confined working space, a high degree of integration is required for the hydraulic system. Traditional hydraulic systems require various hydraulic components to be connected through external hydraulic pipelines, resulting in a relatively dispersed overall system structure, complex piping, and greater difficulty in use and maintenance. Therefore, to address these issues, an integrated threaded cartridge valve assembly has been developed. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of the prior art and provide an integrated threaded cartridge valve assembly for a grouting pump hydraulic system.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The hydraulic system of the grouting pump integrates a threaded cartridge valve group, which includes a valve body (1). The valve body (1) is connected to hydraulic components, including an overflow valve (2), a three-position four-way solenoid directional valve (3), a first hydraulic directional valve (4), a second hydraulic directional valve (5), a third hydraulic directional valve (6), a first differential pressure signal valve (7), and a second differential pressure signal valve (8). The surface of the valve body (1) is provided with oil inlets P and T, main cylinder oil inlets A1 and B1, signal oil inlets X1, X2, X3, and X4, and lifting valve cylinder oil inlets A2 and B2. The valve body (1) is provided with a flow channel that connects the oil inlets of each oil inlet and the oil inlets of each hydraulic component.

[0006] Preferably, the hydraulic component further includes a first threaded throttle valve (9) and a second threaded throttle valve (10); the valve body (1) is provided with a flow channel connecting the oil port A2 of the lifting valve cylinder, the first threaded throttle valve (9), and the positive control oil port of the second hydraulic directional valve (5); the valve body (1) is provided with a flow channel connecting the oil port B2 of the lifting valve cylinder, the second threaded throttle valve (10), and the reverse control oil port of the second hydraulic directional valve (5).

[0007] Preferably, the hydraulic component further includes a first check valve (11) and a second check valve (12); the valve body (1) is provided with an oil outlet connecting the first differential pressure signal valve (7), the first check valve (11) and the main cylinder oil port B1, and the valve body (1) is provided with an oil outlet connecting the second differential pressure signal valve (8), the second check valve (12) and the main cylinder oil port A1.

[0008] Preferably, the hydraulic component further includes a throttle valve (13); the valve body (1) is provided with a flow channel that connects the first threaded throttle valve (9), the throttle valve (13), and the second hydraulic directional valve (5) to the positive control port.

[0009] Preferably, the three-position four-way solenoid valve (3) is provided with a manual control end.

[0010] Preferably, the first hydraulic directional valve (4) is a three-position four-way hydraulic directional valve, and the second hydraulic directional valve (5) and the third hydraulic directional valve (6) are two-position four-way hydraulic directional valves.

[0011] Preferably, the hydraulic component is threadedly connected to the valve body (1).

[0012] The present invention will be further described below:

[0013] The hydraulic system of this utility model integrates a threaded cartridge valve assembly. The hydraulic flow channel inside the valve body 1 connects to the oil passages of various hydraulic components and oil ports. The oil flow rate in the flow channel inside the valve body 1 can reach 120 mL / min. Hydraulic oil enters the valve body 1 through oil inlets P and T, and sequentially passes through the first hydraulic directional valve 4 and the second hydraulic directional valve 5, connecting to the main cylinder 15 through oil ports A1 and B1, thereby controlling the extension and retraction of the main cylinder 15. Hydraulic oil source enters the valve body 1 through oil inlets P and T, sequentially passing through the first hydraulic directional valve 4 and the third hydraulic directional valve 6, connecting to the lifting valve cylinder 16 through oil ports A2 and B2, thereby realizing the extension and retraction of the lifting valve cylinder 16. The oil in the tail end chamber and the front end chamber of the main cylinder 15 are respectively connected through signal oil... Ports X1 and X2, and signal ports X3 and X4 are connected to the control oil and inlet ports of differential pressure signal valves 7 and 8. The control oil ports of differential pressure signal valves 7 and 8 are connected to the forward and reverse control ports of the third hydraulic directional valve 6, respectively, thereby realizing directional switching. The oil supply ports P and T are also connected to the forward and reverse control ports of the first hydraulic directional valve 5, respectively, through the overflow valve 2 and the three-position four-way solenoid directional valve 3, thereby controlling the whole machine to be in the forward and reverse pump start or stop state. Ports A2 and B2 are connected to the forward and reverse control ports of the second hydraulic directional valve 5 through the flow channel in the valve body 1. When the third hydraulic directional valve 6 switches, a portion of the hydraulic oil connected to ports A2 and B2 pushes the second hydraulic directional valve 5 to switch, thereby realizing the alternating directional function.

[0014] The hydraulic components of this invention also enable the third hydraulic directional valve 6 to quickly switch directions by setting a first check valve 11 and a second check valve 12; by setting a first threaded throttle valve 9 and a second threaded throttle valve 10, the switching speed of the second hydraulic directional valve 5 can be controlled; by closing the first threaded throttle valve 9 and the second threaded throttle valve 10, the automatic jogging function of the main cylinder can be realized, thereby facilitating the maintenance and replacement of parts for the whole machine.

[0015] The three-position four-way solenoid directional valve 3 has an H-type neutral position function. After the oil source is connected, the whole machine is in an unloaded state, that is, the oil returns to the oil tank, realizing no-load start-up. The three-position four-way solenoid directional valve 3 has a manual control end; the first hydraulic control directional valve 4 is a three-position four-way hydraulic directional valve, and the second hydraulic directional valve 5 and the third hydraulic directional valve 6 are both two-position four-way hydraulic directional valves; the hydraulic components are threaded plug valves. The circular runout of the threaded plug valve and the valve body 1 needs to be controlled within the range of 0.05mm. The surface finish of the threaded plug hole on the valve body 1 reaches 0.8, and the machining accuracy is high.

[0016] When the hydraulic system of the grouting pump of this utility model integrates a threaded cartridge valve group, the left side of the three-position four-way solenoid directional valve 3 is energized, and the oil directly enters the left side of the first hydraulic directional valve 4, so that the first hydraulic directional valve 4 is in a parallel state. The main system oil passes through the parallel position of the first hydraulic directional valve 4 and enters the tail end of the main cylinder 15 and the lift valve cylinder 16 respectively. The oil entering the tail end of the main cylinder 15 pushes the main cylinder forward. When it reaches the front end of the main cylinder 15, the oil passes through the second differential pressure signal valve 8 and forms a pressure difference. The second differential pressure signal valve 8 sends a signal to the third hydraulic directional valve 6 to realize the reversing of the lift valve cylinder. When the lift valve cylinder 16 reverses, a small part of the oil will push the second hydraulic directional valve 5 to reverse, thus forming an alternating reversing function.

[0017] In summary, the hydraulic system of the grouting pump integrates a threaded cartridge valve group, which controls the first hydraulic directional valve 4 through a three-position four-way solenoid directional valve 3 to achieve the extension and retraction of the main cylinder 15. The linkage between the first differential pressure signal valve 7, the second differential pressure signal valve 8, the second hydraulic directional valve 5, and the third hydraulic directional valve 6 enables the alternating reversal of the main cylinder 15 and the lifting valve cylinder 16.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model discloses an integrated threaded cartridge valve assembly for a grouting pump hydraulic system. All hydraulic components are mounted on a single valve body, and the valve body has flow channels connecting all oil ports and hydraulic components. This reduces the need for external pipelines, resulting in a compact and rationally laid-out valve assembly that is easy to use and maintain. It also meets the requirements of high-flow and high-pressure hydraulic systems and has high operational reliability. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the integrated threaded cartridge valve assembly of the grouting pump hydraulic system of this utility model.

[0021] Figure 2 This is a rear perspective view of the threaded cartridge valve assembly integrated into the hydraulic system of the grouting pump of this utility model.

[0022] Figure 3 This is a schematic diagram illustrating the working principle of the threaded cartridge valve assembly integrated into the hydraulic system of the grouting pump of this utility model.

[0023] In the diagram: 1. Valve body; 2. Relief valve; 3. Three-position four-way solenoid directional valve; 4. First hydraulic directional valve; 5. Second hydraulic directional valve; 6. Third hydraulic directional valve; 7. First differential pressure signal valve; 8. Second differential pressure signal valve; 9. First threaded throttle valve; 10. Second threaded throttle valve; 11. First check valve; 12. Second check valve; 13. Throttle valve; 15. Main cylinder; 16. Lifting valve cylinder. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figures 1 to 3 The hydraulic system of the grouting pump integrates a threaded cartridge valve group, including a valve body 1. Hydraulic components are connected to the valve body 1. The hydraulic components include an overflow valve 2, a three-position four-way solenoid directional valve 3, a first hydraulic directional valve 4, a second hydraulic directional valve 5, a third hydraulic directional valve 6, a first differential pressure signal valve 7, and a second differential pressure signal valve 8. The surface of the valve body 1 is provided with oil inlets P and T, main cylinder oil inlets A1 and B1, signal oil inlets X1, X2, X3, and X4, and lifting valve cylinder oil inlets A2 and B2. The valve body 1 is provided with a flow channel that connects the oil inlets of each oil inlet and the oil inlets of each hydraulic component.

[0026] The hydraulic components include a first threaded throttle valve 9 and a second threaded throttle valve 10. The valve body 1 has a flow channel that connects the oil port A2 of the lifting valve cylinder, the first threaded throttle valve 9 and the positive control port of the second hydraulic directional valve 5. The valve body 1 also has a flow channel that connects the oil port B2 of the lifting valve cylinder, the second threaded throttle valve 10 and the reverse control port of the second hydraulic directional valve 5.

[0027] The hydraulic components include a first check valve 11 and a second check valve 12, see [link / reference] Figure 2 The valve body 1 is provided with a flow channel connecting the oil outlet of the first differential pressure signal valve 7, the first check valve 11 and the main cylinder oil port B1. The valve body 1 is also provided with a flow channel connecting the oil outlet of the second differential pressure signal valve 8, the second check valve 12 and the main cylinder oil port A1.

[0028] The hydraulic component also includes a throttle valve 13, and the valve body 1 has a flow channel that connects the first threaded throttle valve 9, the throttle valve 13 and the positive control port of the second hydraulic directional valve 5.

[0029] The three-position four-way solenoid directional valve 3 is provided with a manual control end; the first hydraulic directional valve 4 is a three-position four-way hydraulic directional valve, and the second hydraulic directional valve 5 and the third hydraulic directional valve 6 are two-position four-way hydraulic directional valves.

[0030] The hydraulic component is threadedly connected to the valve body 1.

Claims

1. A threaded cartridge valve assembly integrated into a grouting pump hydraulic system, the threaded cartridge valve assembly comprising a valve body (1), characterized in that, The valve body (1) is connected to hydraulic components, including a relief valve (2), a three-position four-way solenoid directional valve (3), a first hydraulic directional valve (4), a second hydraulic directional valve (5), a third hydraulic directional valve (6), a first differential pressure signal valve (7), and a second differential pressure signal valve (8). The surface of the valve body (1) is provided with oil inlets (P, T), main cylinder oil inlets (A1, B1), signal oil inlets (X1, X2, X3, X4), and lifting valve cylinder oil inlets (A2, B2). The valve body (1) is provided with a flow channel that connects the oil inlets of each hydraulic component to the oil inlets of each hydraulic component.

2. The threaded cartridge valve assembly integrated into the grouting pump hydraulic system as described in claim 1, characterized in that, The hydraulic components also include a first threaded throttle valve (9) and a second threaded throttle valve (10); the valve body (1) is provided with a flow channel connecting the oil port A2 of the lifting valve cylinder, the first threaded throttle valve (9), and the positive control oil port of the second hydraulic directional valve (5); the valve body (1) is provided with a flow channel connecting the oil ports (A2, B2) of the lifting valve cylinder, the second threaded throttle valve (10), and the reverse control oil port of the second hydraulic directional valve (5).

3. The threaded cartridge valve assembly integrated into the grouting pump hydraulic system as described in claim 1, characterized in that, The hydraulic components also include a first check valve (11) and a second check valve (12); the valve body (1) is provided with an oil outlet connecting the first differential pressure signal valve (7), the first check valve (11) and the main cylinder oil port (A1, B1), and the valve body (1) is provided with an oil outlet connecting the second differential pressure signal valve (8), the second check valve (12) and the main cylinder oil port (A1, B1).

4. The threaded cartridge valve assembly integrated into the grouting pump hydraulic system as described in claim 2, characterized in that, The hydraulic component also includes a throttle valve (13); the valve body (1) is provided with a flow channel that connects the first threaded throttle valve (9), the throttle valve (13), and the second hydraulic directional valve (5) to the positive control port.

5. The threaded cartridge valve assembly integrated into the grouting pump hydraulic system as described in claim 1, characterized in that, The three-position four-way solenoid valve (3) is equipped with a manual control end.

6. The threaded cartridge valve assembly integrated into the grouting pump hydraulic system as described in claim 1, characterized in that, The first hydraulic directional valve (4) is a three-position four-way hydraulic directional valve, and the second hydraulic directional valve (5) and the third hydraulic directional valve (6) are two-position four-way hydraulic directional valves.

7. The integrated threaded cartridge valve assembly of the grouting pump hydraulic system as described in any one of claims 1 to 6, characterized in that, The hydraulic component is threadedly connected to the valve body (1).

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