Mine paste filling upward conveying industrial pump

Abstract

The utility model discloses a mine paste filling upward conveying industrial pump. The mine paste filling upward conveying industrial pump comprises a main oil pump, an oil tank, an auxiliary oil pump, a six-position eight-way valve, a first oil cylinder, a first oil cylinder piston, a first piston rod, a water tank, a first concrete cylinder, a first concrete cylinder piston, a valve A, a feeding box, a valve B, a first mixing chamber, a converging chamber, a second mixing chamber, a valve C, a valve D, a second concrete cylinder piston, a second concrete cylinder and a second piston rod. And a second oil cylinder piston and a second oil cylinder. The problems that an existing upward pipeline pumping system is poor in working condition adaptability, large in pipeline impact, high in cost, unsmooth in working condition and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mine paste filling technology, and particularly relates to a mine paste filling upward conveying industrial pump. BACKGROUND

[0002] The mine paste filling usually adopts double-concrete-cylinder parallel plunger pumps, the pistons of the double-concrete-cylinder are synchronously and reversely telescopic, the paste in the concrete cylinder is alternately pushed into the pump port pipeline by the pistons. On the one hand, the double-cylinder oil circuit is connected in series, the paste is alternately pushed and switched, and the pump port output flow is zero, therefore, in the process of switching from zero flow to the acceleration section, there is a pushing impact pressure, which leads to great impact vibration of the filling pipeline; on the other hand, in the process of conveying the paste in the upward pipeline, the paste in the filling pipeline loses the pushing power when the double-concrete-cylinder is switched, the paste in the upward pipeline accelerates backflow, the water hammer effect is generated, the pipeline instability is aggravated, and the filling working condition is affected. The traditional process adopts an accumulator or a single-cylinder pump to supplement the pressure and flow in the filling pipeline, the adaptability to the working condition with varying filling capacity is poor, the multi-pump cooperation control is difficult and high in cost, and the water hammer impact phenomenon of the upward pumping paste needs to be solved urgently. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art and provides a mine paste filling upward conveying industrial pump.

[0004] In order to achieve the above-mentioned purpose, the technical scheme provided by the utility model is as follows:

[0005] The mine paste filling upward conveying industrial pump comprises a main oil pump (1), an oil tank (2), an auxiliary oil pump (3), a six-position eight-way valve (4), a first oil cylinder (5), a water tank (8), a first concrete cylinder (9), a first feeding tank (12), a first mixing chamber (14), a confluence chamber (15), a second mixing chamber (6), a second feeding tank (24), a second concrete cylinder (20), and a second oil cylinder (23); one end of the first oil cylinder (5) is closed, and the other end is connected with the water tank (8); one end of the first concrete cylinder (9) is connected with the water tank (8), and the other end is connected with a straight-through feeding end of the first mixing chamber (14); a straight-through discharging end of the first mixing chamber (14) is connected with the confluence chamber (15) through a B valve (13); a bypass feeding end of the first mixing chamber (14) is connected with the first feeding tank (12) through an A valve (11); one end of the second oil cylinder (23) is closed, and the other end is connected with the water tank (8); one end of the second concrete cylinder (20) is connected with the water tank (8), and the other end is connected with a straight-through feeding end of the second mixing chamber (16); a straight-through discharging end of the second mixing chamber (16) is connected with the confluence chamber (15) through a C valve (17); a bypass feeding end of the second mixing chamber (16) is connected with the second feeding tank (24) through a D valve (18); the first oil cylinder (5) is provided with a first oil cylinder piston (6); the first concrete cylinder (9) is provided with a first concrete cylinder piston (10); the first oil cylinder piston (6) is connected with the first concrete cylinder piston (10) through a first piston rod (7); the second oil cylinder (23) is provided with a second oil cylinder piston (22); the second concrete cylinder (20) is provided with a second concrete cylinder piston (19); the second oil cylinder piston (22) is connected with the second concrete cylinder piston (19) through a second piston rod (21); an oil outlet of the oil tank (2) is connected with an oil inlet of the main oil pump (1) and an oil inlet of the auxiliary oil pump (3) respectively; oil outlets of the main oil pump (1) and the auxiliary oil pump (3) are connected with an oil inlet of the six-position eight-way valve (4); the six-position eight-way valve (4) is provided with two pairs of oil outlets; one pair of oil outlets is connected with two ends of the first oil cylinder (5) respectively, and the other pair of oil outlets is connected with two ends of the second oil cylinder (23) respectively; an oil return port of the six-position eight-way valve (4) is connected with an oil inlet of the oil cylinder (2).

[0006] Preferably, the six-position eight-way valve (4) is provided with a first oil inlet, a second oil inlet, a first oil return port, and a second oil return port; an oil outlet of the main oil pump (1) is connected with the first oil inlet of the six-position eight-way valve (4); an oil outlet of the auxiliary oil pump (3) is connected with the second oil inlet of the six-position eight-way valve (4); and the first oil return port and the second oil return port of the six-position eight-way valve (4) are connected with the oil cylinder (2).

[0007] Preferably, the first oil cylinder (5) and the second oil cylinder (23) have the same size in diameter and stroke length; and the first concrete cylinder (9) and the second concrete cylinder (20) have the same size in diameter and stroke length.

[0008] Preferably, the valve core of the A valve (11), B valve (13), C valve (17), D valve (18) is a circular truncated cone valve core or a circular cone valve core.

[0009] Preferably, the A valve (11), B valve (13), C valve (17), D valve (18) are hydraulic drive valves or electric drive valves.

[0010] Preferably, the six-position eight-way valve (4) is an integrated synchronous valve core, including two parallel straight-through positions, two reversing straight-through positions, and two split and combination positions.

[0011] The mine paste filling upward conveying control method based on the above mine paste filling upward conveying industrial pump includes the following steps:

[0012] (1) Control the first concrete cylinder piston to start entering the uniform speed pushing stage, and the second concrete cylinder piston to start entering the accelerated suction stage:

[0013] Control the B valve and the D valve to be in the open state, the A valve and the C valve to be in the closed state, and the six-position eight-way valve to be in the two reversing straight-through positions;

[0014] The main oil pump outputs hydraulic oil through the six-position eight-way valve into the rodless cavity of the first oil cylinder, pushes the first oil cylinder piston, the first piston rod, and the first concrete cylinder piston to synchronously and uniformly advance, in the process of uniform advancement of the first concrete cylinder piston, the hydraulic oil in the rod cavity of the first oil cylinder returns to the tank through the six-position eight-way valve, and the material in the rodless cavity of the first concrete cylinder is uniformly pushed out through the mixing chamber and the B valve into the confluence chamber;

[0015] The auxiliary oil pump outputs hydraulic oil through the six-position eight-way valve into the rod cavity of the second oil cylinder, pushes the second oil cylinder piston, the second piston rod, and the second concrete cylinder piston to synchronously and accelerate to retract, in the process of accelerated retraction of the second concrete cylinder piston, the hydraulic oil in the rodless cavity of the second oil cylinder returns to the tank through the six-position eight-way valve, and the material in the second material tank is sucked into the rodless cavity of the second concrete cylinder through the D valve and the second mixing chamber;

[0016] Before the end of the uniform speed pushing of the first concrete cylinder piston, the second concrete cylinder piston completes the suction process of the second concrete cylinder;

[0017] (2) Control the first concrete cylinder piston to start entering the uniform deceleration pushing stage, and the second concrete cylinder piston to start entering the uniform acceleration pushing stage:

[0018] Control the B valve and the C valve to be in the open state, the A valve and the D valve to be in the closed state, and the six-position eight-way valve to be in the two split and combination positions;

[0019] The main oil pump output hydraulic oil enters the rodless cavity of the first oil cylinder and the rodless cavity of the second oil cylinder through the six-position eight-way valve, and pushes the first oil cylinder piston, the first piston rod and the first concrete cylinder piston to uniformly decelerate and advance synchronously, and pushes the second oil cylinder piston, the second piston rod and the second concrete cylinder piston to uniformly accelerate and advance synchronously, and the hydraulic oil in the rod cavity of the first oil cylinder and the rod cavity of the second oil cylinder returns to the tank through the six-position eight-way valve, and the material in the rodless cavity of the first concrete cylinder is pushed out at a uniform deceleration after entering the confluence chamber through the first mixing chamber and the B valve, and the material in the rodless cavity of the second concrete cylinder is pushed out at a uniform acceleration after entering the confluence chamber through the second mixing chamber and the C valve;

[0020] The auxiliary oil pump has no output of hydraulic oil;

[0021] When the first concrete cylinder piston uniformly decelerates to push the material, the second concrete cylinder piston synchronously ends the uniform acceleration to push the material into the uniform speed pushing stage;

[0022] (3) Control the first concrete cylinder piston to start the acceleration material suction stage, and the second concrete cylinder piston to start the uniform speed pushing stage:

[0023] Control the A valve and the C valve to be in the open state, the B valve and the D valve to be in the closed state, and the six-position eight-way valve to be in two parallel straight-through positions;

[0024] The main oil pump output hydraulic oil enters the rodless cavity of the second oil cylinder through the six-position eight-way valve, and pushes the second oil cylinder piston, the second piston rod and the second concrete cylinder piston to uniformly advance synchronously, and in the process of the uniform advancement of the second concrete cylinder piston, the hydraulic oil in the rod cavity of the second oil cylinder returns to the tank through the six-position eight-way valve, and the material in the rodless cavity of the second concrete cylinder is pushed out at a uniform speed after entering the confluence chamber through the second mixing chamber and the C valve;

[0025] The auxiliary oil pump output hydraulic oil enters the rod cavity of the first oil cylinder through the six-position eight-way valve, and pushes the first oil cylinder piston, the first piston rod and the first concrete cylinder piston to synchronously accelerate and retract, and in the process of the acceleration and retraction of the first concrete cylinder piston, the hydraulic oil in the rodless cavity of the first oil cylinder returns to the tank through the six-position eight-way valve, and the material in the first material tank is sucked into the rodless cavity of the first concrete cylinder through the A valve and the first mixing chamber;

[0026] Before the second concrete cylinder piston ends the uniform speed pushing of the material, the first concrete cylinder piston completes the material suction process of the first concrete cylinder;

[0027] (4) Control the first concrete cylinder piston to start the uniform acceleration pushing stage, and the second concrete cylinder piston to start the uniform deceleration pushing stage:

[0028] Control the B valve and the C valve to be in the open state, the A valve and the D valve to be in the closed state, and the six-position eight-way valve to be in two split and combination positions;

[0029] The main oil pump output hydraulic oil enters the rodless cavity of the first oil cylinder and the rodless cavity of the second oil cylinder through the six-position eight-way valve, pushes the first oil cylinder piston, the first piston rod and the first concrete cylinder piston to accelerate synchronously, pushes the second oil cylinder piston, the second piston rod and the second concrete cylinder piston to decelerate synchronously, and the hydraulic oil in the rod cavity of the first oil cylinder and the rod cavity of the second oil cylinder returns to the tank through the six-position eight-way valve, the material in the rodless cavity of the first concrete cylinder is accelerated to push out through the first mixing chamber and B valve, and the material in the rodless cavity of the second concrete cylinder is uniformly decelerated to push out through the second mixing chamber and C valve;

[0030] The auxiliary oil pump has no output of hydraulic oil;

[0031] When the second concrete cylinder piston uniformly decelerates to push the material, the first concrete cylinder piston synchronously ends the uniform acceleration to push the material into the uniform speed to push the material;

[0032] (5) The steps (1) to (4) are repeated.

[0033] Preferably, the switching time of the main oil pump and the auxiliary oil pump and the pumping pressure of the main oil pump and the auxiliary oil pump satisfy the following relationship:

[0034]

[0035] Wherein, t - switching time, s;

[0036] F - pumping pressure at the pump outlet, N

[0037] d - inner diameter of the upward pipeline, m;

[0038] L - length of the upward pipeline, m;

[0039] ρ - density of the paste slurry, kg / m 3

[0040] g - acceleration of gravity, m / s 2

[0041] v0 - inner flow velocity of the pipeline before switching, m / s;

[0042] θ - slope of the upward pipeline;

[0043] v t - instantaneous flow velocity of the upward pipeline, m / s;

[0044] f(v t ,d,ρ) - flow resistance function corresponding to the flow velocity v t of the upward pipeline, N.

[0045] Compared with the prior art, the utility model has the beneficial effects that:

[0046] 1. This utility model is equipped with a separate auxiliary oil pump to achieve rapid advance material suction. The material suction of one concrete cylinder is completed during the uniform speed pushing phase of the other concrete cylinder. On the one hand, the zero point of the pushing speed of one concrete cylinder coincides with the uniform speed point of the pushing speed of the other concrete cylinder, which fundamentally eliminates the occurrence of the zero point of the combined speed of the acceleration and deceleration series system and solves the source problem of water hammer impact in the upward pipeline. On the other hand, the uniform deceleration of one concrete cylinder and the uniform acceleration of the other concrete cylinder coincide synchronously, and the combined flow speed of the system remains stable and constant, which solves the problem of impact when switching between two cylinders.

[0047] This utility model is equipped with a confluence chamber, which can realize simultaneous material pushing by a single pump and two cylinders. Compared with the material replacement by two pumps, it reduces the number of industrial pumps used in single-pipe filling operations. The filling station equipment occupies a small area, which greatly reduces the investment in system equipment.

[0048] 3. This utility model is equipped with a six-position eight-way valve. On the one hand, the integrated synchronous valve core fundamentally eliminates the problem of synchronous control error of dual valves, greatly reduces the impact of synchronous control accuracy on high-pressure oil circuit, and the system has high reliability. On the other hand, compared with the traditional method of adding an accumulator, it has strong adaptability to changes in system pumping flow.

[0049] In summary, this invention overcomes the problems of poor adaptability to operating conditions, large pipeline impact, high cost, and unsmooth operation of existing upward pipeline pumping systems. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of this utility model;

[0051] Figure 2 This is a schematic diagram of the initial state of step one of this utility model;

[0052] Figure 3 This is a schematic diagram of the initial state of step two of this utility model;

[0053] Figure 4 This is a schematic diagram of the initial state in step three of this utility model;

[0054] Figure 5 This is a schematic diagram of the initial state in step four of this utility model.

[0055] In the diagram: 1. Main oil pump; 2. Oil tank; 3. Auxiliary oil pump; 4. Six-position eight-way valve; 5. First oil cylinder; 6. First oil cylinder piston; 7. First piston rod; 8. Water tank; 9. First concrete cylinder; 10. First concrete cylinder piston; 11. Valve A; 12. First feed box; 13. Valve B; 14. Confluence chamber; 15. Confluence chamber; 16. Second mixing chamber; 17. Valve C; 18. Valve D; 19. Second concrete cylinder piston; 20. Second concrete cylinder; 21. Second piston rod; 22. Second oil cylinder piston; 23. Second oil cylinder; 24. Second feed box. DETAILED DESCRIPTION

[0056] Example 1

[0057] Referring to Figures 1 to 5 The mine paste filling upward conveying industrial pump comprises a main oil pump 1, an oil tank 2, an auxiliary oil pump 3, a six-position eight-way valve 4, a first oil cylinder 5, a water tank 8, a first concrete cylinder 9, a first feeding tank 12, a first mixing chamber 14, a confluence chamber 15, a second mixing chamber 6, a second feeding tank 24, a second concrete cylinder 20, and a second oil cylinder 23. One end of the first oil cylinder 5 is closed, and the other end is connected with the water tank 8. One end of the first concrete cylinder 9 is connected with the water tank 8, and the other end is connected with a straight-through feeding end of the first mixing chamber 14. A straight-through discharging end of the first mixing chamber 14 is connected with the confluence chamber 15 through a B valve 13. A bypass feeding end of the first mixing chamber 14 is connected with the first feeding tank 12 through an A valve 11. One end of the second oil cylinder 23 is closed, and the other end is connected with the water tank 8. One end of the second concrete cylinder 20 is connected with the water tank 8, and the other end is connected with a straight-through feeding end of the second mixing chamber 16. A straight-through discharging end of the second mixing chamber 16 is connected with the confluence chamber 15 through a C valve 17. A bypass feeding end of the second mixing chamber 16 is connected with the second feeding tank 24 through a D valve 18. A first oil cylinder piston 6 is arranged in the first oil cylinder 5. A first concrete cylinder piston 10 is arranged in the first concrete cylinder 9. The first oil cylinder piston 6 is connected with the first concrete cylinder piston 10 through a first piston rod 7. A second oil cylinder piston 22 is arranged in the second oil cylinder 23. A second concrete cylinder piston 19 is arranged in the second concrete cylinder 20. The second oil cylinder piston 22 is connected with the second concrete cylinder piston 19 through a second piston rod 21. An oil outlet of the oil tank 2 is connected with an oil inlet of the main oil pump 1 and an oil inlet of the auxiliary oil pump 3, respectively. Oil outlets of the main oil pump 1 and the auxiliary oil pump 3 are connected with an oil inlet of the six-position eight-way valve 4. The six-position eight-way valve 4 is provided with two pairs of oil outlets. One pair of oil outlets is connected with two ends of the first oil cylinder 5, respectively. The other pair of oil outlets is connected with two ends of the second oil cylinder 23, respectively. An oil return port of the six-position eight-way valve 4 is connected with an oil inlet of the oil tank 2.

[0058] The six-position eight-way valve 4 is provided with a first oil inlet, a second oil inlet, a first oil return and a second oil return; the oil outlet of the main oil pump 1 is connected with the first oil inlet of the six-position eight-way valve 4, the oil outlet of the auxiliary oil pump 3 is connected with the second oil inlet of the six-position eight-way valve 4, and the first oil return and the second oil return of the six-position eight-way valve 4 are connected with the oil cylinder 2. The inner diameters and stroke lengths of the first oil cylinder 5 and the second oil cylinder 23 are the same; the inner diameters and stroke lengths of the first concrete cylinder 9 and the second concrete cylinder 20 are the same. The valve cores of the A valve 11, the B valve 13, the C valve 17 and the D valve 18 are circular truncated cone valve cores or circular cone valve cores. The A valve 11, the B valve 13, the C valve 17 and the D valve 18 are hydraulic drive valves or electric drive valves. The six-position eight-way valve 4 is an integrated synchronous valve core, including two parallel straight-through positions, two reversing straight-through positions and two split and combination positions.

[0059] The mine paste filling upward conveying control method based on the above mine paste filling upward conveying industrial pump includes the following steps:

[0060] (1) Controlling the first concrete cylinder piston to start entering the uniform speed pushing stage and the second concrete cylinder piston to start entering the acceleration absorbing stage:

[0061] Controlling the B valve and the D valve to be in the open state, the A valve and the C valve to be in the closed state, and the six-position eight-way valve to be in the two reversing straight-through positions;

[0062] The main oil pump outputs hydraulic oil to enter the rodless cavity of the first oil cylinder through the six-position eight-way valve, pushes the first oil cylinder piston, the first piston rod and the first concrete cylinder piston to synchronously and uniformly advance, in the process of the uniform advancement of the first concrete cylinder piston, the hydraulic oil in the rod cavity of the first oil cylinder returns to the oil tank through the six-position eight-way valve, and the material in the rodless cavity of the first concrete cylinder is uniformly pushed out through the mixing chamber and the B valve into the confluence chamber;

[0063] The auxiliary oil pump outputs hydraulic oil to enter the rod cavity of the second oil cylinder through the six-position eight-way valve, pushes the second oil cylinder piston, the second piston rod and the second concrete cylinder piston to synchronously and accelerate to retract, in the process of the acceleration retraction of the second concrete cylinder piston, the hydraulic oil in the rodless cavity of the second oil cylinder returns to the oil tank through the six-position eight-way valve, and the material in the second material tank is absorbed into the rodless cavity of the second concrete cylinder through the D valve and the second mixing chamber;

[0064] Before the end of the uniform pushing of the first concrete cylinder piston, the second concrete cylinder piston completes the material absorbing process of the second concrete cylinder;

[0065] (2) Controlling the first concrete cylinder piston to start entering the uniform deceleration pushing stage and the second concrete cylinder piston to start entering the uniform acceleration pushing stage:

[0066] Controlling the B valve and the C valve to be in the open state, the A valve and the D valve to be in the closed state, and the six-position eight-way valve to be in the two split and combination positions;

[0067] The main oil pump output hydraulic oil enters the rodless cavity of the first cylinder and the rodless cavity of the second cylinder through the six-position eight-way valve, pushes the first cylinder piston, the first piston rod, and the first concrete cylinder piston to uniformly decelerate and advance synchronously, pushes the second cylinder piston, the second piston rod, and the second concrete cylinder piston to uniformly accelerate and advance synchronously, the hydraulic oil in the rod cavity of the first cylinder and the second cylinder returns to the tank through the six-position eight-way valve, and the material in the rodless cavity of the first concrete cylinder is pushed out at a uniform deceleration after entering the confluence chamber through the first mixing chamber and the B valve, and the material in the rodless cavity of the second concrete cylinder is pushed out at a uniform acceleration after entering the confluence chamber through the second mixing chamber and the C valve;

[0068] The auxiliary oil pump has no hydraulic oil output;

[0069] When the first concrete cylinder piston uniformly decelerates to push the material, the second concrete cylinder piston synchronously ends the uniform acceleration to push the material into the uniform speed pushing stage;

[0070] (3) Control the first concrete cylinder piston to start the acceleration material suction stage, and the second concrete cylinder piston to start the uniform speed pushing stage:

[0071] Control the A valve and the C valve to be in an open state, the B valve and the D valve to be in a closed state, and the six-position eight-way valve to be in two parallel straight-through positions;

[0072] The main oil pump output hydraulic oil enters the rodless cavity of the second cylinder through the six-position eight-way valve, pushes the second cylinder piston, the second piston rod, and the second concrete cylinder piston to uniformly advance synchronously, the hydraulic oil in the rod cavity of the second cylinder returns to the tank through the six-position eight-way valve during the uniform advancement of the second concrete cylinder piston, and the material in the rodless cavity of the second concrete cylinder is pushed out at a uniform speed after entering the confluence chamber through the second mixing chamber and the C valve;

[0073] The auxiliary oil pump output hydraulic oil enters the rod cavity of the first cylinder through the six-position eight-way valve, pushes the first cylinder piston, the first piston rod, and the first concrete cylinder piston to synchronously accelerate and retract, the hydraulic oil in the rodless cavity of the first cylinder returns to the tank through the six-position eight-way valve during the acceleration and retraction of the first concrete cylinder piston, and the material in the first material tank is sucked into the rodless cavity of the first concrete cylinder through the A valve and the first mixing chamber;

[0074] Before the second concrete cylinder piston ends the uniform speed pushing of the material, the first concrete cylinder piston completes the material suction process of the first concrete cylinder;

[0075] (4) Control the first concrete cylinder piston to start the uniform acceleration pushing stage, and the second concrete cylinder piston to start the uniform deceleration pushing stage:

[0076] Control the B valve and the C valve to be in an open state, the A valve and the D valve to be in a closed state, and the six-position eight-way valve to be in two split and combination positions;

[0077] The main oil pump output hydraulic oil enters the rodless cavity of the first oil cylinder and the rodless cavity of the second oil cylinder through the six-position eight-way valve, pushes the first oil cylinder piston, the first piston rod and the first concrete cylinder piston to accelerate synchronously, pushes the second oil cylinder piston, the second piston rod and the second concrete cylinder piston to decelerate synchronously, and the hydraulic oil in the rod cavity of the first oil cylinder and the rod cavity of the second oil cylinder returns to the tank through the six-position eight-way valve, the material in the rodless cavity of the first concrete cylinder is accelerated to push out through the first mixing chamber and B valve, and the material in the rodless cavity of the second concrete cylinder is uniformly decelerated to push out through the second mixing chamber and C valve;

[0078] The auxiliary oil pump has no output of hydraulic oil;

[0079] When the second concrete cylinder piston uniformly decelerates to push the material, the first concrete cylinder piston synchronously ends the uniform acceleration to push the material into the uniform speed pushing;

[0080] (5) Repeat steps (1) to (4).

[0081] The switching time of the main oil pump and the auxiliary oil pump and the pumping pressure of the main oil pump and the auxiliary oil pump satisfy the following relationship:

[0082]

[0083] Wherein, t - switching time, s;

[0084] F - pump outlet pumping pressure, N

[0085] d - the inner diameter of the upward pipeline, m;

[0086] L - the length of the upward pipeline, m;

[0087] ρ - the density of the paste slurry, kg / m 3

[0088] g - the acceleration of gravity, m / s 2

[0089] v0 - the flow rate in the pipeline before switching, m / s;

[0090] θ - the upward slope of the pipeline;

[0091] v t - the instantaneous flow rate in the upward pipeline, m / s;

[0092] f(v t ,d,ρ) - the flow resistance function corresponding to the flow rate v t in the upward pipeline, N.

Claims

1. A mine paste fill up-conveying industrial pump, characterized in that, The mine paste filling upward conveying industrial pump comprises a main oil pump (1), an oil tank (2), an auxiliary oil pump (3), a six-position eight-way valve (4), a first oil cylinder (5), a water tank (8), a first concrete cylinder (9), a first feeding tank (12), a first mixing chamber (14), a confluence chamber (15), a second mixing chamber (6), a second feeding tank (24), a second concrete cylinder (20) and a second oil cylinder (23); one end of the first oil cylinder (5) is closed, and the other end is connected with the water tank (8); one end of the first concrete cylinder (9) is connected with the water tank (8), and the other end is connected with a straight-through feeding end of the first mixing chamber (14); a straight-through discharging end of the first mixing chamber (14) is connected with the confluence chamber (15) through a B valve (13); a bypass feeding end of the first mixing chamber (14) is connected with the first feeding tank (12) through an A valve (11); one end of the second oil cylinder (23) is closed, and the other end is connected with the water tank (8); one end of the second concrete cylinder (20) is connected with the water tank (8), and the other end is connected with a straight-through feeding end of the second mixing chamber (16); a straight-through discharging end of the second mixing chamber (16) is connected with the confluence chamber (15) through a C valve (17); a bypass feeding end of the second mixing chamber (16) is connected with the second feeding tank (24) through a D valve (18); a first oil cylinder piston (6) is arranged in the first oil cylinder (5); a first concrete cylinder piston (10) is arranged in the first concrete cylinder (9); the first oil cylinder piston (6) is connected with the first concrete cylinder piston (10) through a first piston rod (7); a second oil cylinder piston (22) is arranged in the second oil cylinder (23); a second concrete cylinder piston (19) is arranged in the second concrete cylinder (20); the second oil cylinder piston (22) is connected with the second concrete cylinder piston (19) through a second piston rod (21); an oil outlet of the oil tank (2) is connected with an oil inlet of the main oil pump (1) and an oil inlet of the auxiliary oil pump (3) respectively; oil outlets of the main oil pump (1) and the auxiliary oil pump (3) are connected with an oil inlet of the six-position eight-way valve (4); the six-position eight-way valve (4) is provided with two pairs of oil outlets; one pair of oil outlets is connected with two ends of the first oil cylinder (5) respectively, and the other pair of oil outlets is connected with two ends of the second oil cylinder (23) respectively; an oil return port of the six-position eight-way valve (4) is connected with an oil inlet of the oil cylinder (2).

2. A mine paste fill up-throwing industrial pump according to claim 1, characterised in that, The six-position eight-way valve (4) is provided with a first oil inlet, a second oil inlet, a first oil return port and a second oil return port; an oil outlet of the main oil pump (1) is connected with the first oil inlet of the six-position eight-way valve (4); an oil outlet of the auxiliary oil pump (3) is connected with the second oil inlet of the six-position eight-way valve (4); the first oil return port and the second oil return port of the six-position eight-way valve (4) are connected with the oil cylinder (2).

3. A mine paste fill up-throwing industrial pump according to claim 1, characterised in that, The first oil cylinder (5) and the second oil cylinder (23) are of the same size in inner diameter and stroke length; the first concrete cylinder (9) and the second concrete cylinder (20) are of the same size in inner diameter and stroke length.

4. A mine paste fill up-throwing industrial pump according to claim 1, characterised in that, Valve cores of the A valve (11), the B valve (13), the C valve (17) and the D valve (18) are circular truncated cone valve cores or circular cone valve cores.

5. A mine paste backfill upflowing industrial pump according to claim 1, characterised in that, The A valve (11), B valve (13), C valve (17) and D valve (18) are hydraulic drive valves or electric drive valves.

6. A mine paste fill up-throwing industrial pump according to claim 2, characterised in that, The six-position eight-way valve (4) is an integrated synchronous valve core, including two parallel straight-through positions, two reversing straight-through positions and two split and combination positions.

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