Stepless proportioning structure of double-liquid grouting pump

Abstract

The utility model discloses a stepless proportioning structure of a double-liquid grouting pump, which comprises two motors, an output shaft of each motor is respectively provided with a multi-connected gear pump, each multi-connected gear pump is provided with a plurality of reversing valves, and a plurality of liquid outlets of the multi-connected gear pump are respectively connected with the corresponding reversing valves through hydraulic oil pipes; and each reversing valve is also connected with a piston oil cylinder through a hydraulic oil pipe, and a piston rod of the piston oil cylinder drives a piston pump in the sucking, discharging and grouting assembly to move, so that the grouting amount of the sucking, discharging and grouting assembly is controlled. According to the stepless matching double-liquid grouting pump, through the combination of the multi-connected gear pump and the reversing valves, stable output of the grouting pump, especially the small and medium displacement grouting amount is achieved; stepless matching of the two grouting raw materials is truly achieved, and therefore the engineering quality of grouting operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-liquid grouting pumps, in particular to a stepless ratio structure of a double-liquid grouting pump. Background Art

[0002] At present, grouting pumps are used to block water in gas coal mines, well construction, underground waterproofing projects, large railway and highway tunnels, reservoir dam foundations, high-rise building foundations, fill voids, and consolidate broken rock formations.

[0003] However, the existing grouting pumps usually control the grouting displacement by the speed of the motor. Under normal circumstances, the existing grouting pumps can work stably when grouting with large or medium displacement. However, if small displacement grouting is required, if it is only adjusted by the speed of the motor, first, the speed of the motor is limited by performance; second, when the speed of the motor is low, the grouting output will be in an unstable state, which will eventually affect the quality of the grouting. Utility Model Content

[0004] The purpose of the utility model is to provide a stepless ratio structure of a double-liquid grouting pump, which truly realizes the stepless ratio of the grouting pump through the combination of a multi-gear pump and a reversing valve, thereby improving the engineering quality of the grouting operation.

[0005] In order to solve the above technical problems, the utility model provides a stepless ratio structure of a dual-liquid grouting pump, which includes two motors, and a multi-gear pump is installed on the output shaft of each motor.

[0006] Each of the multiple gear pumps is equipped with multiple reversing valves, and the multiple liquid outlets of the multiple gear pumps are connected to the corresponding reversing valves through hydraulic oil pipes;

[0007] Each reversing valve is also connected to a piston cylinder through a hydraulic oil pipe, and the piston rod of the piston cylinder drives the piston pump in the suction and discharge grouting assembly to move, thereby controlling the grouting volume of the suction and discharge grouting assembly.

[0008] Preferably, the multiple liquid outlets of the multi-gear pump are arranged from large to small in terms of displacement; and the liquid outlets with different displacements are respectively connected to the corresponding reversing valves through hydraulic oil pipes.

[0009] Preferably, the two multi-gear pumps are respectively connected to the return oil tank through hydraulic oil pipes. Under the action of the electric motor, the multiple liquid outlets of the multi-gear pump pump the hydraulic oil in the return oil tank toward the reversing valve.

[0010] Preferably, the reversing valve is a circuit solenoid valve. When the circuit solenoid valves of multiple liquid outlets of the multi-gear pump are all opened, a large-displacement oil input is realized to the piston cylinder by controlling the speed of the motor; when the circuit solenoid valve of the large-displacement liquid outlet of the multi-gear pump is opened, and the circuit solenoid valve of the small-displacement liquid outlet is closed, a medium-to-large-displacement oil input is realized to the piston cylinder by controlling the speed of the motor; when the circuit solenoid valve of the small-displacement liquid outlet of the multi-gear pump is opened, and the circuit solenoid valve of the large-displacement liquid outlet is closed, a small-to-medium-displacement oil input is realized to the piston cylinder by controlling the speed of the motor.

[0011] Preferably, when the circuit solenoid valve of the liquid outlet of the multi-gear pump is closed, the hydraulic oil pumped by the multi-gear pump is introduced into the return oil tank through the hydraulic oil pipe.

[0012] Preferably, there are multiple reversing valves, and each liquid outlet of the multi-gear pump is equipped with a reversing valve, and the opening and closing of the liquid outlet is controlled by the corresponding reversing valve; and one of the reversing valves is a cylinder reversing valve, which controls the switching of the telescopic action of the piston cylinder in the piston cylinder.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The stepless ratio dual-liquid grouting pump realizes the stable output of the grouting pump, especially the small and medium displacement grouting volume, through the combination of a multi-gear pump and multiple reversing valves; it truly realizes the stepless ratio of the two grouting raw materials, thereby improving the engineering quality of the grouting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a stepless ratio structure of a double-liquid grouting pump provided by the utility model from a first perspective;

[0016] Figure 2 This is a structural schematic diagram of a stepless ratio structure of a dual-liquid grouting pump provided by the utility model from a second perspective;

[0017] Figure 3 This is a front view of a stepless ratio structure of a double-liquid grouting pump provided by the utility model;

[0018] Figure 4 This is a hydraulic principle diagram of a double-liquid grouting pump provided by the utility model.

[0019] In the figure: 1. Electric motor; 2. Multi-gear pump; 3. Reversing valve; 4. Piston cylinder; 5. Suction and discharge grouting assembly; 6. Oil return tank. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0023] The utility model provides a dual-liquid grouting pump with a stepless ratio structure. Figure 1-3 , including two electric motors 1, each of the multi-gear pumps 2 is equipped with multiple reversing valves 3, and the multiple liquid outlets of the multi-gear pump 2 are respectively connected to the corresponding reversing valves 3 through hydraulic oil pipes; each of the reversing valves 3 is also connected to the piston cylinder 4 through a hydraulic oil pipe, and the piston rod of the piston cylinder 4 drives the piston (plunger) pump in the suction and discharge grouting assembly 5 to move, thereby controlling the grouting amount of the suction and discharge grouting assembly 5.

[0024] For details, please refer to Figure 4 The multiple liquid outlets of the multi-gear pump 2 are arranged from large to small in terms of displacement; and the liquid outlets with different displacements are respectively connected to the corresponding reversing valves 3 through hydraulic oil pipes.

[0025] In addition, the two multi-gear pumps 2 are respectively connected to the return oil tank 6 through hydraulic oil pipes. Under the action of the electric motor 1, the multiple liquid outlets of the multi-gear pump 2 pump the hydraulic oil in the return oil tank 6 toward the reversing valve 3.

[0026] In an embodiment of the present utility model, the reversing valve 3 is a circuit solenoid valve. When the circuit solenoid valves of multiple liquid outlets of the multi-gear pump 2 are all opened, a large-displacement oil input is realized to the piston cylinder 4 by controlling the speed of the motor 1; when the circuit solenoid valve of the large-displacement liquid outlet of the multi-gear pump 2 is opened, and the circuit solenoid valve of the small-displacement liquid outlet is closed, a medium-to-large-displacement oil input is realized to the piston cylinder 4 by controlling the speed of the motor 1; when the circuit solenoid valve of the small-displacement liquid outlet of the multi-gear pump 2 is opened, and the circuit solenoid valve of the large-displacement liquid outlet is closed, a small-to-medium-displacement oil input is realized to the piston cylinder 4 by controlling the speed of the motor 1.

[0027] When the circuit solenoid valve of the liquid outlet of the multi-gear pump 2 is closed, the hydraulic oil pumped by the multi-gear pump 2 is introduced into the oil return tank 6 through the hydraulic oil pipe.

[0028] Furthermore, the reversing valve 3 is provided in plurality, and each liquid outlet of the multi-gear pump 2 is equipped with a reversing valve 3, and the opening and closing of the liquid outlet is controlled by the corresponding reversing valve 3; and one of the reversing valves 3 is a cylinder reversing valve, which controls the switching of the telescopic action of the piston cylinder in the piston cylinder 4.

[0029] The stepless ratio dual-liquid grouting pump achieves stable output of the grouting pump, especially small and medium-displacement grouting volume, through the combination of a multi-gear pump and multiple circuit solenoid valves; it truly realizes the stepless ratio of the two grouting raw materials, thereby improving the engineering quality of the grouting operation.

[0030] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A stepless ratio structure of a double-liquid grouting pump, characterized in that: The invention comprises two electric motors (1), wherein a multi-gear pump (2) is mounted on the output shaft of each electric motor (1). Each of the multi-gear pumps (2) is equipped with a plurality of reversing valves (3), and the plurality of liquid outlets of the multi-gear pump (2) are respectively connected to the corresponding reversing valves (3) via hydraulic oil pipes; Each reversing valve (3) is also connected to a piston cylinder (4) via a hydraulic oil pipe, and the piston rod of the piston cylinder (4) drives the piston pump in the suction and discharge grouting assembly (5) to move, thereby controlling the grouting volume of the suction and discharge grouting assembly (5).

2. The stepless ratio structure of a dual-liquid grouting pump according to claim 1, characterized in that: The multiple liquid outlets of the multi-gear pump (2) are arranged in descending order of displacement; and the liquid outlets with different displacements are respectively connected to corresponding reversing valves (3) via hydraulic oil pipes.

3. The stepless ratio structure of a dual-liquid grouting pump according to claim 2, characterized in that: The two multi-gear pumps (2) are respectively connected to the return oil tank (6) through hydraulic oil pipes. Under the action of the electric motor (1), the multiple liquid outlets of the multi-gear pump (2) pump the hydraulic oil in the return oil tank (6) toward the reversing valve (3).

4. The stepless ratio structure of a dual-liquid grouting pump according to claim 3, characterized in that: The reversing valve (3) is a circuit solenoid valve. When the circuit solenoid valves of the multiple liquid outlets of the multi-gear pump (2) are all opened, a large-displacement oil input is realized to the piston cylinder (4) by controlling the rotation speed of the motor (1). When the circuit solenoid valve of the large-displacement liquid outlet of the multi-gear pump (2) is opened, and the circuit solenoid valve of the small-displacement liquid outlet is closed, a medium-large displacement oil input is realized to the piston cylinder (4) by controlling the rotation speed of the motor (1). When the circuit solenoid valve of the small-displacement liquid outlet of the multi-gear pump (2) is opened, and the circuit solenoid valve of the large-displacement liquid outlet is closed, a small-to-medium displacement oil input is realized to the piston cylinder (4) by controlling the rotation speed of the motor (1).

5. The stepless ratio structure of a dual-liquid grouting pump according to claim 4, characterized in that: When the circuit solenoid valve of the liquid outlet of the multi-gear pump (2) is closed, the hydraulic oil pumped by the multi-gear pump (2) is introduced into the oil return tank (6) through the hydraulic oil pipe.

6. The stepless ratio structure of a dual-liquid grouting pump according to claim 4, characterized in that: A plurality of reversing valves (3) are provided, and each liquid outlet of the multi-gear pump (2) is equipped with a reversing valve (3), and the opening and closing of the liquid outlet is controlled by the corresponding reversing valve (3); and one of the reversing valves (3) is a cylinder reversing valve, which controls the switching of the telescopic action of the piston cylinder in the piston cylinder (4).

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