Large-displacement light slurry conveying reciprocating pump set

Abstract

The utility model provides a large-displacement light slurry conveying reciprocating pump set, which belongs to the technical field of reciprocating pumps and comprises a profile steel base, a filling system, a slurry conveying pump, a transmission shaft, a driving motor, a plunger lubricating system and a power end lubricating system. The filling system is located on the outer side of the profile steel base, the slurry conveying pump, the driving motor, the plunger lubricating system and the power end lubricating system are all installed on the profile steel base, the filling system is connected with the slurry conveying pump through a pipeline, and the driving motor is connected with an input shaft of the slurry conveying pump through a transmission shaft. According to the large-displacement light slurry conveying reciprocating pump set, the slurry conveying pump, the driving motor, the plunger lubricating system and the power end lubricating system are all integrated on the profile steel base, and the driving motor is connected with the input shaft of the slurry conveying pump through the transmission shaft, so that the structure between the slurry conveying pump and the driving motor is more compact; and the size of the slurry conveying pump set is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reciprocating pumps, and more specifically relates to a large-displacement, lightweight slurry conveying reciprocating pump group. Background Art

[0002] In order to vigorously develop the circular economy and follow the principles of reduction, reuse and recycling, we focus on the management and utilization of solid wastes such as coal gangue, and use coal gangue as filler for backfilling of goafs. This backfilling method can achieve harmless treatment of coal gangue and ensure safe production in coal mines.

[0003] At present, slurry delivery pump sets mostly use F series and 3NB series drilling pumps (also known as mud pumps) in the drilling and exploration industry. Since the drilling pump is driven by belt drive, the size of the slurry delivery pump set is too large. Utility Model Content

[0004] The purpose of the utility model is to provide a large-displacement, lightweight slurry delivery reciprocating pump group, aiming to solve the problem that the existing slurry delivery pump group is too large in size.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a large-displacement lightweight slurry conveying reciprocating pump group, including: a steel base, a perfusion system, a slurry conveying pump, a transmission shaft, a drive motor, a plunger lubrication system and a power end lubrication system; the perfusion system is located on the outside of the steel base, the slurry conveying pump, the drive motor, the plunger lubrication system and the power end lubrication system are all installed on the steel base, the perfusion system is connected to the slurry conveying pump through a pipeline, the drive motor is connected to the input shaft of the slurry conveying pump through the transmission shaft, the plunger lubrication system is used to provide cooling and lubrication for the plunger of the slurry conveying pump, and the power end lubrication system is used to provide cooling and lubrication for the power end of the slurry conveying pump.

[0006] In a possible implementation, the injection system includes a centrifugal pump, and the impeller and pump casing of the centrifugal pump are made of high-chromium wear-resistant alloy material.

[0007] In a possible implementation, the centrifugal pump is driven by a variable frequency motor.

[0008] In a possible implementation, the power end lubrication system includes an oil tank, and the oil tank is located inside the steel base.

[0009] In a possible implementation, the slurry delivery pump is a five-cylinder plunger pump.

[0010] In a possible implementation, the input shaft of the slurry delivery pump is located below the crosshead centerline of the slurry delivery pump.

[0011] In one possible implementation, the slurry conveying pump includes a main pump, a suction pipe group and a discharge pipe group; the suction pipe group and the discharge pipe group are respectively installed at the liquid inlet end and the liquid outlet end of the main pump; the suction pipe group includes a suction main pipe and a suction branch pipe; the suction branch pipe is arranged at the top of the suction main pipe and connected to the main pump, and the suction main pipe is a conical structure.

[0012] In a possible implementation, a center line of the suction main pipe is arranged to form an angle with a horizontal line.

[0013] In a possible implementation, a connecting plate is fixedly installed on the top of the suction branch pipe, the top surface of the connecting plate is a plane, and the suction branch pipe is connected to the main pump through the connecting plate.

[0014] In a possible implementation, the discharge pipe assembly includes: a discharge main pipe, a pressure transmitter, a pressure gauge, and a safety valve; the discharge main pipe is connected to the main pump, and the pressure transmitter, the pressure gauge, and the safety valve are all installed on the discharge main pipe.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application is a large-displacement lightweight slurry conveying reciprocating pump group of the utility model, which integrates the slurry conveying pump, drive motor, plunger lubrication system and power end lubrication system into the steel base, and the drive motor is connected to the input shaft of the slurry conveying pump through the transmission shaft. Therefore, the structure between the slurry conveying pump and the drive motor is more compact, effectively reducing the volume of the slurry conveying pump group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A front view of a large-displacement, lightweight slurry delivery reciprocating pump set provided by an embodiment of the utility model;

[0018] Figure 2 A top view of a large-displacement, lightweight slurry delivery reciprocating pump set provided by an embodiment of the present utility model;

[0019] Figure 3 A schematic diagram of the partial structure of a large-displacement, lightweight slurry delivery reciprocating pump set provided by an embodiment of the present utility model;

[0020] Figure 4A schematic structural diagram of a large-displacement, lightweight slurry delivery reciprocating pump set provided by an embodiment of the present utility model;

[0021] Figure 5 A schematic cross-sectional view of the suction pipe assembly provided in an embodiment of the present invention;

[0022] Figure 6 This is a schematic cross-sectional structural diagram of a connecting plate provided in an embodiment of the present utility model.

[0023] In the figure: 1. Main pump; 101. Suction main pipe; 102. Suction branch pipe; 103. Blind flange; 104. Connecting plate; 105. Annular groove; 201. Discharge main pipe; 202. Pressure transmitter; 203. Pressure gauge; 204. Safety valve; 3. Steel base; 4. Perfusion system; 5. Slurry transfer pump; 501. Input shaft; 502. Crosshead; 6. Drive shaft; 7. Drive motor; 8. Plunger lubrication system; 9. Power end lubrication system; 901. Oil tank. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Please also refer to Figures 1 to 2 The large-displacement, lightweight, reciprocating slurry delivery pump assembly provided by the present invention will now be described. The large-displacement, lightweight, reciprocating slurry delivery pump assembly comprises: a steel base 3, a grouting system 4, a slurry delivery pump 5, a transmission shaft 6, a drive motor 7, a plunger lubrication system 8, and a power-end lubrication system 9. The grouting system 4 is located outside the steel base 3, and the slurry delivery pump 5, the drive motor 7, the plunger lubrication system 8, and the power-end lubrication system 9 are all mounted on the steel base 3. The grouting system 4 is connected to the slurry delivery pump 5 via a pipeline, and the drive motor 7 is connected to the input shaft 501 of the slurry delivery pump 5 via the transmission shaft 6. The plunger lubrication system 8 is used to provide cooling and lubrication for the plunger of the slurry delivery pump 5, and the power-end lubrication system 9 is used to provide cooling and lubrication for the power end of the slurry delivery pump 5.

[0026] This embodiment provides a large-displacement, lightweight slurry conveying reciprocating pump group. Compared with the prior art, the slurry conveying pump 5, the drive motor 7, the plunger lubrication system 8 and the power end lubrication system 9 are all integrated into the steel base 3, and the drive motor 7 is connected to the input shaft 501 of the slurry conveying pump 5 through the transmission shaft 6. Therefore, the structure between the slurry conveying pump 5 and the drive motor 7 is more compact, effectively reducing the volume of the slurry conveying pump 5 group.

[0027] The filling system 4 includes a centrifugal pump, whose impeller and pump casing are made of a high-chromium wear-resistant alloy. In this embodiment, the conveying medium contains lumpy particles, which cause wear on the impeller and pump casing through which the medium flows. The impeller and pump casing made of a high-chromium wear-resistant alloy have higher wear resistance and can extend their service life.

[0028] The centrifugal pump is driven by a variable frequency motor. In this embodiment, the variable frequency motor can achieve arbitrary adjustment of the centrifugal pump displacement.

[0029] See also Figure 3 The power end lubrication system 9 includes an oil tank 901, which is located inside the steel base 3. In this embodiment, by locating the oil tank 901 in the power end lubrication system 9 inside the steel base 3, the overall height of the slurry delivery pump 5 group can be reduced, reducing the space occupied by components on the steel base 3.

[0030] See also Figure 1 and Figure 2 The slurry delivery pump 5 adopts a five-cylinder plunger pump. In this embodiment, the slurry delivery is upgraded from the original three-cylinder piston pump to a five-cylinder plunger pump. The pressure fluctuation amplitude of the five-cylinder plunger pump is much smaller than that of the three-cylinder piston pump, eliminating the air bag, reducing the pump weight and reducing the number of vulnerable parts. The slurry delivery is upgraded from the original three-cylinder piston pump to a five-cylinder plunger pump, increasing the diameter of the plunger. The five-cylinder plunger pump uses high-strength materials and non-metallic materials, and the maximum displacement of a single pump reaches 300m 3 / h, weight within 8 tons.

[0031] See also Figure 3 , the input shaft 501 of the slurry conveying pump 5 is located below the center line of the crosshead 502 of the slurry conveying pump 5. In this embodiment, the input shaft 501 of the slurry conveying pump 5 adopts a low-position design, that is, the input shaft 501 of the slurry conveying pump 5 is located below the center line of the crosshead 502 of the slurry conveying pump 5.

[0032] See also Figures 4 and 5The slurry delivery pump 5 includes: a main pump 1, a suction pipe group, and a discharge pipe group; the suction pipe group and the discharge pipe group are respectively installed at the liquid inlet and liquid outlet of the main pump 1; the suction pipe group includes a suction main pipe 101 and a suction branch pipe 102; the suction branch pipe 102 is arranged at the top of the suction main pipe 101 and is connected to the main pump 1, and the suction main pipe 101 has a conical structure, and the center line of the suction main pipe 101 is set at an angle to the horizontal line. In this embodiment, the suction pipe group includes the suction main pipe 101 and the suction branch pipe 102, and the suction main pipe 101 has a conical structure, and the center line of the suction main pipe 101 is set at an angle to the horizontal line. When the slurry delivery pump 5 is shut down, the slurry will flow downward along the inner wall of the suction main pipe 101 under its own weight, and then be discharged from the suction main pipe 101, avoiding pipeline blockage caused by the accumulation of slurry in the suction main pipe 101. The angle between the center line of the suction main pipe 101 and the horizontal line is between 1° and 3°.

[0033] In some embodiments, see Figures 4 and 5 A blind flange 103 is removably mounted on the smaller end of the suction pipe 101. In this embodiment, the suction pipe 101 is conical, with a larger end and a smaller end. A blind flange 103 is removably mounted on the smaller end of the suction pipe 101 to seal the suction pipe 101. The blind flange 103 is securely connected to the suction pipe 101 via bolts. The provision of the blind flange 103 on the suction pipe 101 facilitates cleaning of the suction pipe 101 after the pump is shut down.

[0034] In some embodiments, see Figures 4 and 5 In this embodiment, the connection between the suction branch pipe 102 and the suction main pipe 101 is a smooth transition, which reduces the slurry flow resistance and avoids the occurrence of slurry flow "dead corners" and slurry blocking the pipeline.

[0035] In some embodiments, see Figures 4 and 5 , the suction branch pipe 102 is an arc-shaped pipe. In this embodiment, the suction branch pipe 102 is modified from a standard 90° elbow, and only the bending part of the 90° elbow is retained.

[0036] In some embodiments, see Figures 4 and 5 There are multiple suction branch pipes 102 arranged along the length of the main suction pipe 101. In this embodiment, the main pump 1 includes multiple cylinders, each with a liquid inlet at the bottom. The number of suction branch pipes 102 matches the number of cylinders. There is a one-to-one correspondence between each suction branch pipe 102 and the liquid inlet of each cylinder.

[0037] In some embodiments, see Figures 4 and 5A connecting plate 104 is fixedly mounted on the top of the suction branch pipe 102. The top surface of the connecting plate 104 is flat, and the suction branch pipe 102 is connected to the main pump 1 through the connecting plate 104. In this embodiment, the connecting plate 104 is a rectangular plate with a flat top surface, that is, the contact surface between the connecting plate 104 and the main pump 1 is flat, thereby facilitating the assembly of the suction pipe assembly and the main pump 1. The connecting plate 104 covers all the suction branch pipes 102 and is provided with through holes corresponding to the suction branch pipes 102.

[0038] In some embodiments, see Figure 5 and Figure 6 The top surface of the connecting plate 104 is provided with an annular groove 105 for mounting a sealing ring. In this embodiment, the annular groove 105 on the top surface of the connecting plate 104 corresponds to the suction branch pipe 102. The sealing ring can ensure the sealing between the connecting plate 104 and the main pump 1, thereby preventing slurry leakage.

[0039] In some embodiments, the suction main pipe 101 , the suction branch pipe 102 and the connecting plate 104 are all fixed by welding.

[0040] In some embodiments, see Figure 4 The discharge pipe assembly includes a discharge main pipe 201, a pressure transmitter 202, a pressure gauge 203, and a safety valve 204. The discharge main pipe 201 is connected to the main pump 1, and the pressure transmitter 202, pressure gauge 203, and safety valve 204 are all mounted on the discharge main pipe 201. In this embodiment, the discharge main pipe 201 is arranged horizontally, with one end of the discharge main pipe 201 fixed to the main pump 1. The interface ends of the pressure transmitter 202, pressure gauge 203, and safety valve 204 are in close contact with the main channel of the discharge main pipe 201, thereby ensuring that the interfaces of the pressure transmitter 202, pressure gauge 203, and safety valve 204 are not blocked by slurry and thus prevent malfunction.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-displacement, lightweight slurry transport reciprocating pump set, characterized in that: include: A steel base, a perfusion system, a slurry delivery pump, a transmission shaft, a drive motor, a plunger lubrication system and a power end lubrication system; the perfusion system is located on the outside of the steel base, the slurry delivery pump, the drive motor, the plunger lubrication system and the power end lubrication system are all installed on the steel base, the perfusion system is connected to the slurry delivery pump through a pipeline, the drive motor is connected to the input shaft of the slurry delivery pump through the transmission shaft, the plunger lubrication system is used to provide cooling and lubrication for the plunger of the slurry delivery pump, and the power end lubrication system is used to provide cooling and lubrication for the power end of the slurry delivery pump.

2. A large-displacement, lightweight slurry transport reciprocating pump set as claimed in claim 1, characterized in that: The injection system comprises a centrifugal pump, the impeller and pump casing of the centrifugal pump are made of high-chromium wear-resistant alloy material.

3. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 2, characterized in that: The centrifugal pump is driven by a variable frequency motor.

4. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 1, characterized in that: The power end lubrication system comprises an oil tank, and the oil tank is located inside the profiled steel base.

5. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 1, characterized in that: The slurry delivery pump adopts a five-cylinder plunger pump.

6. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 1, characterized in that: The input shaft of the slurry delivery pump is located below the crosshead center line of the slurry delivery pump.

7. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 1, characterized in that: The slurry conveying pump includes a main pump, a suction pipe group and a discharge pipe group; the suction pipe group and the discharge pipe group are respectively installed at the liquid inlet end and the liquid outlet end of the main pump; the suction pipe group includes a suction main pipe and a suction branch pipe; the suction branch pipe is arranged on the top of the suction main pipe and is connected to the main pump, and the suction main pipe is a conical structure.

8. A large-displacement, light-duty slurry transport reciprocating pump set as claimed in claim 7, characterized in that: The center line of the suction main pipe is arranged at an angle to the horizontal line.

9. A large-displacement, light-duty slurry transport reciprocating pump set as claimed in claim 7, characterized in that: A connecting plate is fixedly installed on the top of the suction branch pipe, the top surface of the connecting plate is a plane, and the suction branch pipe is connected to the main pump through the connecting plate.

10. A large-displacement light-duty slurry transport reciprocating pump set as claimed in claim 7, characterized in that: The discharge pipe group includes: a discharge main pipe, a pressure transmitter, a pressure gauge and a safety valve; the discharge main pipe is connected to the main pump, and the pressure transmitter, the pressure gauge and the safety valve are all installed on the discharge main pipe.

Images