Large-volume ultrahigh-pressure piston type filling industrial pump hydraulic system

Abstract

The utility model discloses a hydraulic system of a large-volume ultrahigh-pressure piston type filling industrial pump. The hydraulic system comprises a power device, a hydraulic valve assembly and a pumping device which are connected in sequence, the power device is provided with a channel for providing main system oil and a channel for distributing system oil; the hydraulic valve assembly comprises at least two reversing valve groups and distribution valve groups which are arranged in parallel; the pumping device comprises a main oil cylinder and a main oil cylinder B which are arranged in parallel, a hopper is arranged at the front end of the main oil cylinder A and the front end of the main oil cylinder B, and a pipe S is arranged in the hopper; a main system oil supply channel of the power device is communicated with a port P of the reversing valve group through a pipeline, a port A of the reversing valve group is communicated with the main oil cylinder A, and a port B of the reversing valve group is communicated with the main oil cylinder B; a channel, for providing oil for the distribution system, of the power device is communicated with a port P of the distribution valve set through a pipeline, a port A of the distribution valve set is communicated with a tilt cylinder A of the S pipe, and a port B of the distribution valve set is communicated with a tilt cylinder B of the S pipe. The device has the characteristics of large conveying capacity, high outlet pressure, reasonable layout, convenience in maintenance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic grouting pumps, in particular to a large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system. Background Art

[0002] As the country has greatly strengthened its efforts in environmental protection, the production requirements for existing coal mines, metal and non-metallic mines and other enterprises have become increasingly stringent. In order to avoid excessive environmental pollution in the mining area and the risk of collapse in the goaf, most companies now use solid wastes such as tailings, crushed stone, fly ash, industrial slag, etc. from mines to make paste slurries that do not require dehydration, and continuously transport them to the underground goaf for filling through filling industrial pumps. This can not only improve the resource mining rate, but also reduce land occupation and pollution to the environment. With the widespread application of filling industrial pumps, according to the different characteristics of tailings produced by different mines, the requirements for the pumping volume and conveying distance of existing filling industrial pumps are increasing. In order to meet the needs of large-scale filling operations, if two or more piston industrial pumps are used, this will not only increase the investment, but also occupy a larger space, the system structure is more complex, and the economic benefits are lower. Therefore, in order to achieve the functional requirements of large volume and high pressure, it is urgent to develop a large volume and ultra-high pressure piston industrial pump hydraulic system. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] The large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system comprises a power device (1), a hydraulic valve assembly (2) and a pumping device (3) which are connected in sequence; the power device (1) is provided with a channel for providing main system oil and a channel for distributing system oil; the hydraulic valve assembly (2) comprises a base frame, the base frame is provided with at least two reversing valve groups (4) arranged in parallel, the base frame is provided with a distributing valve group (5), the pumping device (3) comprises an A main oil cylinder (6) and a B main oil cylinder (7) arranged in parallel, the A main oil cylinder (6) and the B main oil cylinder (7) are arranged in parallel. ) is provided with a hopper at the front end, and an S tube is provided in the hopper; the power device (1) provides a channel for the main system oil, which is connected to the P port of the reversing valve group (4) through a pipeline, the A port of the reversing valve group (4) is connected to the A main oil cylinder (6), and the B port of the reversing valve group (4) is connected to the B main oil cylinder (7); the power device (1) provides a channel for the distribution system oil, which is connected to the P port of the distribution valve group (5) through a pipeline, the A port of the distribution valve group (5) is connected to the A swing cylinder (8) of the S tube, and the B port of the distribution valve group (5) is connected to the B swing cylinder (9) of the S tube.

[0006] Preferably, the power device (1) is a hydraulic power station, comprising an oil tank (10) provided with a main oil pump (12), a constant pressure pump (13), and a gear pump (16); at least two groups of motor oil pump groups (11) arranged in double layers are provided on one side of the oil tank (10); each group of the motor oil pump groups comprises an electric motor, and the electric motor is connected to and drives the main oil pump (12) and the constant pressure pump (13) through a transfer case (20); the oil inlets of the main oil pump (12) and the constant pressure pump (13) are respectively connected to the oil tank (10); the oil outlet of the main oil pump (12) is connected to the P port of the reversing valve group (4); and the oil outlet of the constant pressure pump (13) is connected to the P port of the distribution valve group (5).

[0007] Preferably, a gear pump reversing valve (14) is provided on the distribution valve group (5), a stirring motor (15) is provided in the hopper, the motor is connected to and drives the gear pump (16) through a transfer case (20), the oil inlet of the gear pump (16) is connected to the oil tank (10), the oil outlet of the gear pump (16) is connected to the P port of the gear pump reversing valve (14), and the working oil port of the gear pump reversing valve (14) is connected to the stirring motor (15).

[0008] Preferably, the main oil pump (12) comprises four 190 pumps connected in series, the constant pressure pump (13) is a 45 pump, and the gear pump (16) is a 22 pump.

[0009] Preferably, the oil tank (10) is provided with an oil return filter (17).

[0010] Preferably, a plurality of accumulators (18) connected in series are provided on the P port of the distribution valve group (5).

[0011] Preferably, a temperature sensor is provided on the oil tank (10).

[0012] Preferably, the hydraulic power station further comprises an air cooler (19), wherein the air cooler (19) is arranged above the motor oil pump group.

[0013] Preferably, the reversing valve group (4) is an integrated electro-hydraulic reversing valve with a diameter of 80, a valve body of the integrated electro-hydraulic reversing valve is provided with a plurality of flow channels used as hydraulic oil circuits, and the integrated electro-hydraulic reversing valve is provided with an electromagnetic reversing valve and a relief valve.

[0014] The utility model is further described below:

[0015] The hydraulic system of the large-volume ultra-high pressure piston filling industrial pump of the utility model is mainly composed of a power unit, a pumping device, a hydraulic valve assembly and an intermediate connecting pipeline. The hydraulic oil pumped out by the motor oil pump group of the hydraulic power station drives the pumping device to suck in and output materials. The power unit provides the main system oil source and the distribution system oil source, which are respectively used to realize the advance and retreat of the main oil cylinder and control the action of the S-tube swing cylinder.

[0016] The power unit can adopt an integrated hydraulic power station, which is mainly composed of oil pump, motor, transfer case, radiator, pipeline, etc. The system adopts 4 groups of 190 oil pump + 190 oil pump + 190 oil pump + 190 oil pump + 45 oil pump + 22 oil pump. The oil at the outlet of the oil pump is combined through the main pressure oil pipe on the intermediate connecting pipe, and then transported to the pumping device through the hydraulic valve group. The pumping device is mainly composed of the main oil cylinder, S-tube swing cylinder, stirring motor, etc. The intermediate connecting pipe is mainly composed of a hydraulic valve group and various hydraulic hoses of different specifications, which are mainly used for system control and transmission of oil flow. The hydraulic valve group consists of two 80-diameter electro-hydraulic reversing valves, a distribution valve group, and two accumulators. The reversing valve P port of the 80-diameter electro-hydraulic reversing valve is connected to the hydraulic pump outlet of the hydraulic power station. The hydraulic pump provides pressurized oil to the reversing valve. The A and B ports of the reversing valve are connected to the main oil cylinder. The hydraulic oil enters from the P port and passes through the reversing valve and then enters the main oil cylinder from the A and B ports, and then returns to the hydraulic power station from the T port. The T port of the reversing valve is connected to the cooler and filter of the hydraulic power station. The hydraulic oil returns to the oil tank after cooling and filtering. The distribution valve group is used to control the action of the S-tube swing cylinder. The accumulator is connected to the T port of the reversing valve to absorb the impact of the return oil.

[0017] The system should take into account the need to meet the requirements of volume while occupying a small space. Therefore, when designing the hydraulic power station, the 4 motor oil pump groups are designed in an upper and lower two-layer design. The oil pump is connected to the motor through the transfer case, and the oil tank is placed to one side. The main oil pumps (190 pumps + 190 pumps + 190 pumps + 190 pumps) of the 4 motor oil pump groups suck oil from the oil tank and deliver oil to the high-pressure oil pipe through the high-pressure oil outlet of the oil pump at the same time. After converging through the high-pressure oil pipe, the oil is delivered to the pumping device. The return oil enters the radiator, and the heat is dissipated by the radiator to maintain the temperature of the system. The constant pressure pump and gear pump (45 pumps + 22 pumps) of the motor oil pump group suck oil from the oil tank and deliver it to the pumping device through the distribution valve group. There is also a way to circulate the oil through the return oil magnetic filter to the system for impurities filtration to maintain the cleanliness of the system. A temperature sensor is installed on the oil tank. When the temperature of the system reaches a certain set value, the radiator automatically starts and stops to maintain the oil temperature of the system.

[0018] The oil source delivered from the main system of the hydraulic power station enters the main valve group through the middle connecting pipe, and then the forward and backward functions of the main oil cylinder are realized through the reversal of the electro-hydraulic reversing valve of the valve group. After the oil source of the hydraulic power station distribution system is delivered to the distribution reversing valve of the valve group, the reversal of the S pipe is realized through the reversal of the reversing valve. When reversing, there are two accumulators in series at the P port position of the reversing valve, so the constant pressure pump generally only charges the accumulator. When reversing, it is mainly through the instantaneous release of pressure from the accumulator to complete the reversal of the S pipe. The switching of the S pipe and the main oil cylinder is controlled by the program to realize the forward and reverse pumping of the material. The main return oil pipeline of the hydraulic system is connected in series with two accumulators to absorb the impact of the return oil pipeline.

[0019] In order to reduce the labor intensity of replacing wearing parts, the system is specially designed with the function of automatic piston withdrawal. The operator only needs to press the piston withdrawal button on the control panel, and the piston will automatically return to the water tank, which greatly improves the efficiency of replacement and reduces labor intensity.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The large-volume ultra-high-pressure piston filling industrial pump hydraulic system of the utility model is characterized by large conveying volume (320 cubic meters / hour) and high outlet pressure (20MPa). The upper and lower layers of the hydraulic power station are stacked together, the whole machine occupies a small space and has a large oil flow rate. By integrating the reversing valve group and the distribution valve group together, the system structure is more reasonable and maintenance is more convenient. The modular design model has high space utilization and has obvious advantages in the field of mine filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the hydraulic system of the large-volume ultra-high-pressure piston-type filling industrial pump of the utility model;

[0023] Figure 2 It is a top view of the hydraulic system of the large-volume ultra-high-pressure piston-type filling industrial pump of the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the working principle of the large-volume ultra-high-pressure piston filling industrial pump hydraulic system.

[0025] In the figure: 1. Power unit; 2. Hydraulic valve assembly; 3. Pumping device; 4. Reversing valve group; 5. Distribution valve group; 6. A main oil cylinder; 7. B main oil cylinder; 8. A swing cylinder; 9. B swing cylinder; 10. Oil tank; 11. Motor oil pump group; 12. Main oil pump; 13. Constant pressure pump; 14. Gear pump reversing valve; 15. Agitator motor; 16. Gear pump; 17. Return oil filter; 18. Accumulator; 19. Air cooler; 20. Transfer case. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figures 1 to 3 The large-volume ultra-high pressure piston filling industrial pump hydraulic system comprises a power device 1, a hydraulic valve assembly 2 and a pumping device 3 connected in sequence; the power device 1 is provided with a channel for providing main system oil and a channel for distributing system oil; the hydraulic valve assembly 2 comprises a chassis, the chassis is provided with at least two reversing valve groups 4 arranged in parallel, the chassis is provided with a distribution valve group 5, the pumping device 3 comprises an A master oil cylinder 6 and a B master oil cylinder 7 arranged in parallel, the A master oil cylinder 6 and the B master oil cylinder A hopper is provided at the front end of 7, and an S tube is provided in the hopper; the power device 1 provides a channel for the main system oil to be connected with the P port of the reversing valve group 4 through a pipeline, the A port of the reversing valve group 4 is connected with the A master oil cylinder 6, and the B port of the reversing valve group 4 is connected with the B master oil cylinder 7; the power device 1 provides a channel for the distribution system oil to be connected with the P port of the distribution valve group 5 through a pipeline, the A port of the distribution valve group 5 is connected with the A swing cylinder 8 of the S tube, and the B port of the distribution valve group 5 is connected with the B swing cylinder 9 of the S tube.

[0028] Among them, the power unit 1 is a hydraulic power station, which includes an oil tank 10 provided with a main oil pump 12, a constant pressure pump 13, and a gear pump 16. At least two groups of double-layer motor oil pump groups 11 are provided on one side of the oil tank 10. Each group of the motor oil pump groups includes an electric motor, which is connected and drives the main oil pump 12 and the constant pressure pump 13 through a transfer case 20. The oil inlets of the main oil pump 12 and the constant pressure pump 13 are respectively connected to the oil tank 10, the oil outlet of the main oil pump 12 is connected to the P port of the reversing valve group 4, and the oil outlet of the constant pressure pump 13 is connected to the P port of the distribution valve group 5. The distribution valve group 5 is provided with a gear pump reversing valve 14, the hopper is provided with a stirring motor 15, the motor is connected to and drives a gear pump 16 through a transfer case 20, the oil inlet of the gear pump 16 is connected to the oil tank 10, the oil outlet of the gear pump 16 is connected to the P port of the gear pump reversing valve 14, and the working oil port of the gear pump reversing valve 14 is connected to the stirring motor 15. The main oil pump 12 includes four 190 pumps connected in series, the constant pressure pump 13 is a 45 pump, and the gear pump 16 is a 22 pump. The oil tank 10 is provided with an oil return filter 17. The P port of the distribution valve group 5 is provided with a plurality of accumulators 18 connected in series. The oil tank 10 is provided with a temperature sensor. The hydraulic power station also includes an air cooler 19, which is arranged above the motor oil pump group. The reversing valve group 4 is an integrated electro-hydraulic reversing valve with a diameter of 80. A plurality of flow channels used as hydraulic oil circuits are arranged in the valve body of the integrated electro-hydraulic reversing valve. An electromagnetic reversing valve and a relief valve are arranged on the integrated electro-hydraulic reversing valve.

Claims

1. A large-volume ultra-high pressure piston filling industrial pump hydraulic system, characterized in that: The large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system comprises a power device (1), a hydraulic valve assembly (2) and a pumping device (3) which are connected in sequence; the power device (1) is provided with a channel for providing main system oil and a channel for distributing system oil; the hydraulic valve assembly (2) comprises a base frame, the base frame is provided with at least two reversing valve groups (4) arranged in parallel, and the base frame is provided with a distributing valve group (5); the pumping device (3) comprises an A main oil cylinder (6) and a B main oil cylinder (7) arranged in parallel, the A main oil cylinder (6) and the B main oil cylinder (7) being arranged in parallel. ) is provided with a hopper at the front end, and an S tube is provided in the hopper; the power device (1) provides a channel for the main system oil, which is connected to the P port of the reversing valve group (4) through a pipeline, the A port of the reversing valve group (4) is connected to the A main oil cylinder (6), and the B port of the reversing valve group (4) is connected to the B main oil cylinder (7); the power device (1) provides a channel for the distribution system oil, which is connected to the P port of the distribution valve group (5) through a pipeline, the A port of the distribution valve group (5) is connected to the A swing cylinder (8) of the S tube, and the B port of the distribution valve group (5) is connected to the B swing cylinder (9) of the S tube.

2. The large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system as claimed in claim 1 is characterized in that: The power device (1) is a hydraulic power station, comprising an oil tank (10) provided with a main oil pump (12), a constant pressure pump (13), and a gear pump (16); at least two groups of double-layered motor oil pump groups (11) are provided on one side of the oil tank (10); each group of motor oil pump groups (11) comprises an electric motor, and the electric motor is connected to and drives the main oil pump (12) and the constant pressure pump (13) through a transfer case (20); the oil inlets of the main oil pump (12) and the constant pressure pump (13) are respectively connected to the oil tank (10); the oil outlet of the main oil pump (12) is connected to the P port of the reversing valve group (4); and the oil outlet of the constant pressure pump (13) is connected to the P port of the distribution valve group (5).

3. The large-volume ultra-high-pressure piston-type filling industrial pump hydraulic system as claimed in claim 2 is characterized in that: The distribution valve group (5) is provided with a gear pump reversing valve (14), the hopper is provided with a stirring motor (15), the motor is connected to and drives a gear pump (16) through a transfer case (20), the oil inlet of the gear pump (16) is connected to the oil tank (10), the oil outlet of the gear pump (16) is connected to the P port of the gear pump reversing valve (14), and the working oil port of the gear pump reversing valve (14) is connected to the stirring motor (15).

4. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claim 3, characterized in that: The main oil pump (12) includes four 190 pumps connected in series, the constant pressure pump (13) is a 45 pump, and the gear pump (16) is a 22 pump.

5. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claim 2, characterized in that: The oil tank (10) is provided with an oil return filter (17).

6. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claim 1, characterized in that: A plurality of accumulators (18) connected in series are provided on the P port of the distribution valve group (5).

7. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claim 1, characterized in that: The oil tank (10) is provided with a temperature sensor.

8. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claim 2, characterized in that: The hydraulic power station further comprises an air cooler (19), wherein the air cooler (19) is arranged above the motor oil pump group.

9. The large volume ultra-high pressure piston filling industrial pump hydraulic system as claimed in claims 1 to 8, characterized in that: The reversing valve group (4) is an integrated electro-hydraulic reversing valve with a diameter of 80, a valve body of the integrated electro-hydraulic reversing valve is provided with a plurality of flow channels used as hydraulic oil circuits, and the integrated electro-hydraulic reversing valve is provided with an electromagnetic reversing valve and a relief valve.

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