Stepless proportioning double-liquid grouting pump

Abstract

The utility model discloses a stepless matching double-liquid grouting pump which comprises two sets of grouting systems which are connected in parallel, and grouting of two raw materials of liquid A and liquid B is achieved. The grouting system comprises a power assembly, a multi-connected gear pump, a reversing valve assembly, a piston oil cylinder assembly and a suction and discharge grouting assembly. The multi-connected gear pump corresponds to a plurality of liquid outlets, and under the action of the power assembly, the plurality of liquid outlets can realize output of different displacements; the reversing valve assembly is connected with a plurality of liquid outlets of the multi-linkage gear pump and an oil return tank through hydraulic oil pipes. The piston oil cylinder assembly is connected with the reversing valve assembly through a hydraulic oil pipe, and oil input of the piston oil cylinder assembly is controlled through opening and closing of a loop electromagnetic valve in the reversing valve assembly. A piston rod of the piston oil cylinder assembly is connected with a piston pump in the sucking, discharging and grouting assembly, and under the action of the piston oil cylinder assembly, the grouting amount of the sucking, discharging and grouting assembly is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of double-liquid grouting pumps, in particular to a stepless ratio 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 dual-liquid grouting pump, which truly realizes the stepless ratio of the grouting pump through the combination of a multi-gear pump and a loop solenoid 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 dual-liquid grouting pump, which includes two parallel grouting systems to realize grouting of two raw materials, liquid A and liquid B.

[0006] Among them, the grouting system includes a power component, a multi-gear pump, a reversing valve component, a piston cylinder component and a suction and discharge grouting component;

[0007] The multi-gear pump corresponds to a plurality of liquid outlets, and under the action of the power assembly, the plurality of liquid outlets can achieve output of different displacements;

[0008] The reversing valve assembly is connected to the multiple liquid outlets and the oil return tank of the multi-gear pump through hydraulic oil pipes;

[0009] The piston-cylinder assembly is connected to the reversing valve assembly via a hydraulic oil pipe, and the oil input to the piston-cylinder assembly is controlled by opening and closing the circuit solenoid valve in the reversing valve assembly;

[0010] The piston rod of the piston-cylinder assembly is connected to the piston pump in the suction-discharge grouting assembly. Under the action of the piston-cylinder assembly, the grouting volume of the suction-discharge grouting assembly is controlled.

[0011] Preferably, the power assembly includes two electric motors, and the output shafts of the two electric motors are respectively connected to corresponding multi-gear pumps.

[0012] Preferably, the liquid inlets of the two multi-gear pumps are connected to the oil return tank, and the multiple liquid outlets of the multi-gear pumps are arranged in descending order of displacement.

[0013] Preferably, the multiple liquid outlets of the multi-gear pump are respectively connected to the piston-cylinder assembly through hydraulic oil pipes, and loop solenoid valves are respectively installed on the hydraulic oil pipes. The opening and closing of the loop solenoid valves control the oil input of the multi-gear pump to the piston-cylinder assembly.

[0014] Preferably, when the circuit solenoid valves of the multiple liquid outlets of the multi-gear pump are all opened; by controlling the speed of the motor, a large displacement oil input is achieved for the piston cylinder assembly;

[0015] When the circuit solenoid valve of the large-displacement outlet of the multi-gear pump is opened, and the circuit solenoid valve of the small-displacement outlet is closed; by controlling the speed of the motor, the medium-large displacement oil input is achieved to the piston cylinder assembly;

[0016] When the circuit solenoid valve of the small displacement outlet of the multi-gear pump is opened and the circuit solenoid valve of the large displacement outlet is closed; by controlling the speed of the motor, small and medium displacement oil input is achieved to the piston cylinder assembly.

[0017] Preferably, when the circuit solenoid valve of any one of the liquid outlets 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 corresponding hydraulic oil pipe.

[0018] Preferably, the reversing valve assembly equipped with each grouting system is provided with multiple loop solenoid valves, and each liquid outlet of the multi-gear pump is equipped with a loop solenoid valve, and the opening and closing of the liquid outlet is controlled by the corresponding loop solenoid valve; and one of the loop solenoid valves is a cylinder reversing valve, which controls the switching of the telescopic action of the piston cylinder in the piston cylinder assembly.

[0019] Preferably, the piston-cylinder assembly includes two piston cylinders, which correspond to the two piston pumps of the suction and discharge grouting assembly respectively; the grouting of the two raw materials, liquid A and liquid B, is controlled respectively by the two piston pumps.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This stepless ratio dual-liquid grouting pump achieves stable output of grouting pump, especially small and medium displacement grouting volume, through the combination of multi-gear pump and multiple circuit solenoid valves, thereby improving the engineering quality of grouting operation;

[0022] 2. The stepless ratio dual-liquid grouting pump consists of two parallel grouting systems. On the basis of the stable output of small-displacement grouting volume in the grouting system, 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

[0023] Figure 1 This is a schematic diagram of the overall structure of the stepless ratio dual-liquid grouting pump provided by the utility model;

[0024] Figure 2 This is a first-perspective schematic diagram of the internal structure of the stepless ratio dual-liquid grouting pump provided by the utility model;

[0025] Figure 3 This is a second perspective schematic diagram of the internal structure of the stepless ratio dual-liquid grouting pump provided by the utility model;

[0026] Figure 4 This is a top view of the internal structure of the stepless ratio dual-liquid grouting pump provided by the utility model;

[0027] Figure 5 This is a front view of the internal structure of the stepless ratio dual-liquid grouting pump provided by the utility model;

[0028] Figure 6 It is a rear view of the internal structure of the stepless ratio dual-liquid grouting pump provided by the utility model.

[0029] In the figure: 1. Power assembly; 2. Multi-gear pump; 3. Reversing valve assembly; 4. Piston-cylinder assembly; 5. Suction and discharge grouting assembly; 6. Oil return tank; 11. Electric motor; 31. Loop solenoid valve. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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

[0033] The utility model provides a stepless ratio double liquid grouting pump, such as Figure 1 As shown, it includes two parallel grouting systems to realize the grouting of two raw materials, liquid A and liquid B.

[0034] Specific structure such as Figure 2-6 The grouting system includes a power assembly 1, a multi-gear pump 2, a reversing valve assembly 3, a piston cylinder assembly 4 and a suction and discharge grouting assembly 5; the multi-gear pump 2 corresponds to multiple liquid outlets, and under the action of the power assembly 1, the multiple liquid outlets can achieve outputs with different displacements; the reversing valve assembly 3 is connected to the multiple liquid outlets of the multi-gear pump 2 and the return oil tank 6 through hydraulic oil pipes; the piston cylinder assembly 4 is connected to the reversing valve assembly 3 through a hydraulic oil pipe, and the oil input of the piston cylinder assembly 4 is controlled by opening and closing the loop solenoid valve in the reversing valve assembly 3; the piston rod of the piston cylinder assembly 4 is connected to the piston (plunger) pump in the suction and discharge grouting assembly 5, and under the action of the piston cylinder assembly 4, the grouting amount of the suction and discharge grouting assembly 5 is controlled.

[0035] 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 circuit solenoid valves, thereby improving the engineering quality of the grouting operation.

[0036] Specifically, the power assembly 1 includes two electric motors 11, and the output shafts of the two electric motors 11 are respectively connected to the corresponding multi-gear pumps 2; and the liquid inlets of the two multi-gear pumps 2 are connected to the return oil tank 6, and the multiple liquid outlets of the multi-gear pumps 2 are arranged from large to small in displacement.

[0037] Furthermore, the multiple liquid outlets of the multi-gear pump 2 are respectively connected to the piston-cylinder assembly 4 through hydraulic oil pipes, and loop solenoid valves 31 are respectively installed on the hydraulic oil pipes. The opening and closing of the loop solenoid valves 31 control the oil input of the multi-gear pump 2 to the piston-cylinder assembly 4.

[0038] When the circuit solenoid valves 31 of the multiple liquid outlets of the multi-gear pump 2 are all opened, a large displacement oil input is achieved to the piston cylinder assembly 4 by controlling the rotation speed of the electric motor 11 .

[0039] When the circuit solenoid valve 31 of the large-displacement outlet of the multi-gear pump 2 is opened and the circuit solenoid valve 31 of the small-displacement outlet is closed; by controlling the speed of the motor 11, medium and large-displacement oil input is achieved to the piston cylinder assembly 4.

[0040] When the circuit solenoid valve 31 of the small displacement outlet of the multi-gear pump 2 is opened and the circuit solenoid valve 31 of the large displacement outlet is closed; by controlling the speed of the motor 11, small and medium displacement oil input is achieved to the piston cylinder assembly 4.

[0041] In this embodiment, when the circuit solenoid valve 31 of any one of the liquid outlets of the multi-gear pump 2 is closed, the hydraulic oil pumped by the multi-gear pump 2 is introduced into the return oil tank 6 through the corresponding hydraulic oil pipe.

[0042] In this embodiment, the reversing valve assembly 3 equipped with each grouting system is provided with multiple circuit solenoid valves 31, and each liquid outlet of the multi-gear pump 2 is equipped with a circuit solenoid valve 31, and the opening and closing of the liquid outlet is controlled by the corresponding circuit solenoid valve 31; among them, there is also a circuit solenoid valve 31 which is a cylinder reversing valve, which controls the telescopic action switching of the piston cylinder in the piston cylinder assembly 4.

[0043] Furthermore, the piston-cylinder assembly 4 includes two piston cylinders, which correspond to the two piston (plunger) pumps of the suction and discharge grouting assembly 5 respectively; the grouting amounts of the two raw materials, liquid A and liquid B, are controlled respectively by the two piston (plunger) pumps.

[0044] The stepless ratio dual-liquid grouting pump consists of two parallel grouting systems. On the basis of the stable output of small-displacement grouting volume in the grouting system, it truly realizes the stepless ratio of the two grouting raw materials, thereby improving the engineering quality of the grouting operation.

[0045] 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 dual-liquid grouting pump, comprising two parallel grouting systems, for grouting two raw materials, liquid A and liquid B, characterized in that: The grouting system comprises a power assembly (1), a multi-gear pump (2), a reversing valve assembly (3), a piston cylinder assembly (4) and a suction and discharge grouting assembly (5); The multi-gear pump (2) corresponds to a plurality of liquid outlets, and under the action of the power assembly (1), the plurality of liquid outlets can achieve outputs of different displacements; The reversing valve assembly (3) is respectively connected to the multiple liquid outlets of the multi-gear pump (2) and the oil return tank (6) through hydraulic oil pipes; The piston cylinder assembly (4) is connected to the reversing valve assembly (3) via a hydraulic oil pipe, and the oil input of the piston cylinder assembly (4) is controlled by opening and closing the circuit solenoid valve in the reversing valve assembly (3); The piston rod of the piston-cylinder assembly (4) is connected to the piston pump in the suction-discharge grouting assembly (5), and the grouting volume of the suction-discharge grouting assembly (5) is controlled under the action of the piston-cylinder assembly (4).

2. A stepless ratio dual-liquid grouting pump according to claim 1, characterized in that: The power assembly (1) comprises two electric motors (11), and the output shafts of the two electric motors (11) are respectively connected to corresponding multi-gear pumps (2).

3. A stepless ratio dual-liquid grouting pump as claimed in claim 2, characterized in that: The liquid inlets of the two multi-gear pumps (2) are connected to the oil return tank (6), and the multiple liquid outlets of the multi-gear pumps (2) are arranged in descending order of displacement.

4. A stepless ratio dual-liquid grouting pump as claimed in claim 3, characterized in that: The multiple liquid outlets of the multi-gear pump (2) are connected to the piston-cylinder assembly (4) through hydraulic oil pipes, and a circuit solenoid valve (31) is installed on each hydraulic oil pipe. The oil input of the multi-gear pump (2) to the piston-cylinder assembly (4) is controlled by opening and closing the circuit solenoid valve (31).

5. A stepless ratio dual-liquid grouting pump as claimed in claim 4, characterized in that: When the circuit solenoid valves (31) of the multiple liquid outlets of the multi-gear pump (2) are all opened, a large displacement oil input is achieved to the piston cylinder assembly (4) by controlling the rotation speed of the electric motor (11); When the circuit solenoid valve (31) of the large-displacement liquid outlet of the multi-gear pump (2) is opened and the circuit solenoid valve (31) of the small-displacement liquid outlet is closed; by controlling the rotation speed of the electric motor (11), medium-large-displacement oil input is achieved to the piston cylinder assembly (4); When the circuit solenoid valve (31) of the small-displacement liquid outlet of the multi-gear pump (2) is opened and the circuit solenoid valve (31) of the large-displacement liquid outlet is closed; by controlling the rotation speed of the electric motor (11), the small and medium-displacement oil input is achieved to the piston cylinder assembly (4).

6. A stepless ratio dual-liquid grouting pump as claimed in claim 5, characterized in that: When the circuit solenoid valve (31) of any one of the liquid outlets 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 corresponding hydraulic oil pipe.

7. A stepless ratio dual-liquid grouting pump as claimed in claim 4, characterized in that: The reversing valve assembly (3) equipped with each grouting system is provided with a plurality of loop solenoid valves (31), and each liquid outlet of the multi-gear pump (2) is equipped with a loop solenoid valve (31), and the opening and closing of the liquid outlet is controlled by the corresponding loop solenoid valve (31); and one loop solenoid valve (31) is a cylinder reversing valve, which controls the switching of the telescopic action of the piston cylinder in the piston cylinder assembly (4).

8. The stepless ratio dual-liquid grouting pump according to claim 1, characterized in that: The piston cylinder assembly (4) comprises two piston cylinders, which respectively correspond to the two piston pumps of the suction and discharge grouting assembly (5); the grouting volumes of the two raw materials, liquid A and liquid B, are respectively controlled by the two piston pumps.

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