Plunger pump set for multiple media

Abstract

The invention provides a multi-medium plunger pump set which comprises a pump station base, a driving device and a multi-crankshaft plunger pump driven by the driving device are arranged on the pump station base, the multi-crankshaft plunger pump comprises a machine body arranged on the pump station base, a plurality of crankshafts are arranged in the machine body, and the multiple crankshafts are arranged in the machine body. The crankshaft is connected with an output shaft of the driving device, a plurality of pump heads are arranged on the machine body, and the crankshaft drives the corresponding pump heads to pump various working solutions at the same time. According to the embodiment, the pump station capable of pumping different media is formed based on the multi-crankshaft plunger pump, multi-flow and multi-pressure output under the large-flow condition of the different media can be achieved, configuration and control of a fully-mechanized coal mining liquid supply system are simplified, and the transmission efficiency of a hydraulic system is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of plunger pumps, and in particular to a plunger pump assembly for multiple media. Background Art

[0002] The emulsion pumps and spray pumps in traditional fully mechanized mining working faces have different requirements for flow, pressure, and medium. Multiple emulsion pumps and spray pumps need to be connected in parallel to form a liquid supply system for use. However, this will result in a large number of equipment, a complex system, heavy weight, and high use and maintenance costs.

[0003] Some plunger pumps in the prior art adopt an axial flow distribution method, but are limited to lubricating oil media. They are controlled by a combination of a two-way cartridge valve group and an electromagnetic reversing valve, but cannot meet the pressure control requirements of pump boost and unloading of the emulsion; others adopt axial piston pump structures such as slippers and swash plates. Although they can achieve double oil suction and double oil discharge, they are limited to oil media and cannot meet the ultra-large flow rate of liquid supply in coal mines; in addition, some technologies adopt a series structure of radial piston pumps and axial piston pumps. Although they can achieve multi-flow and multi-pressure outputs, the front radial piston pump adopts axial flow distribution, and the rear axial piston pump is suitable for oil media. Summary of the invention

[0004] In view of this, the present disclosure aims to provide a plunger pump set for multiple media to solve the above-mentioned technical problems in the prior art.

[0005] The present disclosure provides a plunger pump group for multiple media, which includes a pump station base, on which a driving device and a multi-crank plunger pump driven by the driving device are arranged, and the multi-crank plunger pump includes a body arranged on the pump station base, a plurality of crankshafts are arranged in the body, and the crankshafts are connected to the output shaft of the driving device, and a plurality of pump heads are arranged on the body, and the corresponding pump heads are driven by the crankshafts to pump a plurality of working fluids simultaneously.

[0006] In some embodiments, the multi-crankshaft plunger pump has a horizontally opposed structure, and the plurality of crankshafts are arranged parallel to each other and are consistent with the extension direction of the multi-crankshaft plunger pump.

[0007] In some embodiments, a coupling is provided between the driving device and the multi-crank piston pump.

[0008] In some embodiments, the crankshaft is connected to the pump head through a transmission device, a working chamber is provided in the pump head, and movement of the crankshaft causes the volume of the working chamber to change periodically to drive the pump head to achieve liquid suction and discharge.

[0009] In some embodiments, the transmission device includes at least a connecting rod, a slider and a piston, the crankshaft is connected to one side of the slider through the connecting rod, the other side of the slider is connected to the piston, and the piston is arranged in the working chamber.

[0010] In some embodiments, the multiple pump heads include a first pump head and a second pump head, the first pump head is connected to an emulsion pipeline, a unloading valve is arranged on the first pump head, and the emulsion is pumped through the first pump head, the second pump head is connected to a spray water pipeline, an overflow valve is arranged on the second pump head, and the spray water is pumped through the second pump head.

[0011] In some embodiments, the emulsion pipeline includes an emulsion inlet pipe, an emulsion outlet pipe and an emulsion unloading pipe, the suction port of the first pump head is connected to the emulsion inlet pipe, the discharge port of the first pump head is connected to the unloading valve, the high-pressure port of the first pump head is connected to the emulsion outlet pipe, and the low-pressure port of the unloading valve is connected to the emulsion unloading pipe.

[0012] In some embodiments, the spray water pipeline includes at least a spray water inlet pipe, a spray water outlet pipe and a spray water overflow pipe, the suction port of the second pump head is connected to the spray water inlet pipe, the discharge port of the second pump head is connected to the overflow valve, the high-pressure port of the overflow valve is connected to the spray water outlet pipe, and the low-pressure port of the overflow valve is connected to the spray water overflow pipe.

[0013] In some embodiments, a lubrication device is also included, and the lubrication device is connected to the multi-crankshaft plunger pump through a pipeline.

[0014] In some embodiments, the body serves as an oil tank and is used in conjunction with the lubrication device.

[0015] The disclosed embodiment forms a pump station capable of pumping different media based on a multi-crankshaft plunger pump, which can achieve multi-flow and multi-pressure output under large flow conditions of different media, simplify the configuration and control of the comprehensive mining fluid supply system, and improve the transmission efficiency of the hydraulic system.

[0016] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a plunger pump group for multimedia provided by an embodiment of the present disclosure;

[0019] Figure 2 is a top view of a plunger pump assembly for multimedia provided by an embodiment of the present disclosure;

[0020] Figure 3 is a side view of a plunger pump assembly for multimedia provided by an embodiment of the present disclosure;

[0021] Figure 4 It is a structural schematic diagram of a multi-crankshaft plunger pump in a plunger pump group for multi-medium provided by an embodiment of the present disclosure;

[0022] Figure 5 It is a schematic diagram of the connection of pipelines in a plunger pump group for multiple media provided in an embodiment of the present disclosure.

[0023] The above drawings include the following reference numerals:

[0024] 1-base; 2-driving device; 3-coupling; 4-multi-crankshaft plunger pump; 41-machine body; 42-crankshaft; 43-connecting rod; 44-slider; 45-piston; 46-pump head; 5-lubricating device; 6-overflow valve; 7-unloading valve; 8-emulsion pipeline; 81-emulsion inlet pipe; 82-emulsion outlet pipe; 83-emulsion unloading pipe; 9-spray water pipeline; 91-spray water inlet pipe; 92-spray water outlet pipe; 93-spray water overflow pipe. DETAILED DESCRIPTION

[0025] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0026] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0028] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0029] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0030] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0031] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0033] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to the relevant embodiments according to the present disclosure.

[0034] One or more of the same or different embodiments.

[0035] The embodiment of the present disclosure provides a plunger pump group for multi-media, which can simplify the structure and control method of the comprehensive mining liquid supply system, thereby realizing the function of independent output of multi-media, multi-flow and multi-pressure of a single pump station. Figure 1-Figure 5 As shown, the plunger pump group for multi-media in this embodiment adopts the form of a pump station, which includes a pump station base 1. The pump station base 1 in this embodiment can be provided with a manifold and other supporting devices to facilitate the transmission of the working fluid through the pump station base 1; the pump station base 1 is provided with a driving device 2 and a multi-crank plunger pump 4 driven by the driving device 2. In this embodiment, the driving device 2 is, for example, arranged on one side of the pump station base 1, and the multi-crank plunger pump 4 is, for example, arranged on the other side along the length direction of the pump station base 1. The driving device 1 here can be a motor, and of course, a device with other driving modes, such as a hydraulic motor, can also be used. The output shaft of the driving device 2 here is connected to the multi-crank plunger pump 4, so that the multi-crank plunger pump 4 is driven by the driving device 2.

[0036] Furthermore, a coupling 3 is arranged between the driving device 2 and the multi-crank plunger pump 4, and the output shaft of the driving device 2 is connected to the input shaft of the multi-crank plunger pump 4 through the coupling 3, so that the driving device 2 outputs power and drives the operation of the multi-crank plunger pump 4 through the coupling 3. The arrangement of the coupling 3 facilitates the arrangement of the driving device 2 and the multi-crank plunger pump 4 along the length direction of the pump station base 1.

[0037] Furthermore, the multi-crankshaft plunger pump 4 includes a body 41, which is arranged on the pump station base 1 and is used to support and position other components in the multi-crankshaft plunger pump 4. Specifically, a plurality of crankshafts 42 are arranged in the body 41, and the crankshafts 42 here rotate under the drive of the driving device, for example, they can be connected to the input shaft of the multi-crankshaft plunger pump 4, so that the rotation of the plurality of crankshafts 42 is driven by the input shaft.

[0038] In one embodiment, the input shaft can be connected to the two crankshafts 42 through a gear set so that the two crankshafts 42 can be driven by the input shaft to achieve periodic rotation. Of course, based on other transmission structures, the input shaft can also be connected to more crankshafts 42 to drive more crankshafts 42 to rotate.

[0039] Furthermore, a plurality of pump heads 46 are provided on the machine body 42, wherein the pump head 6 is used to realize the pumping of the working fluid, and the plurality of corresponding pump heads 46 driven by the plurality of crankshafts 42 can realize the simultaneous pumping of a plurality of different types of high-pressure working fluids.

[0040] Furthermore, the multi-crankshaft plunger pump 4 adopts a horizontal opposed structure, and the plurality of crankshafts 42 are arranged parallel to each other in a horizontal plane, and the extension direction of the crankshafts 42 is consistent with the extension direction of the multi-crankshaft plunger pump 4. The plurality of crankshafts 42 here can be arranged, for example, at the lower inner side of the machine body 41; the pump head 46 here can be arranged, for example, above the machine body 41, and in particular, can be arranged on the upper surface of the machine body 41.

[0041] Furthermore, the crankshaft 42 in the body 41 is arranged corresponding to the pump head 46, and the corresponding pump head 46 is opened and closed through the movement of the crankshaft 42, thereby realizing the pumping operation of various media based on the multi-crankshaft structure.

[0042] In this embodiment, two crankshafts 42 are arranged in parallel in the machine head 41, and two pump heads 46 corresponding to the crankshafts 42 are arranged on the machine body 41. The two pump heads 46 are respectively used to pump two working fluids such as emulsion and spray water. The functions of the two pump heads 46 here can be exchanged according to actual conditions, and of course they can also be used to pump other working fluids.

[0043] Furthermore, the plunger pump group also includes a lubricating device 5, which is connected to the multi-crankshaft plunger pump 4 through a pipeline. The lubricating device 5 here is used to provide lubricating oil to the multi-crankshaft plunger pump 4 to achieve cyclic lubrication and cooling.

[0044] In another embodiment, the machine body 41 may also be used as a tank for lubricating oil, so as to be used in conjunction with the lubricating device 5. For example, the lubricating oil in the lubricating device 5 may be stored in the machine body 41 for recycling.

[0045] Furthermore, the crankshaft 42 is connected to the pump head 46 through a transmission device, a working chamber is arranged in the pump head 46, and a piston 45 is arranged in the working chamber. The volume of the working chamber in the pump head 46 changes periodically through the movement of the piston 45, so that the pump head 46 can realize the suction and discharge operations of the working fluid.

[0046] Specifically, the transmission device can adopt a variety of structures and forms. In one embodiment, it includes at least a connecting rod 43 and a slider 44, wherein the crankshaft 42 is connected to one side of the slider 44 through the connecting rod 43, and the other side of the slider 44 is connected to the piston 45. Since the piston 45 is arranged in the working chamber of the pump head 46, the rotation of the crankshaft 42 drives the movement of the connecting rod 43, and drives the slider 44 to realize linear motion through the connecting rod 43, thereby driving the piston 45 to move in the working chamber along the axial direction of the working chamber.

[0047] In this way, when the crankshaft 42 rotates, the rotational motion of the crankshaft 42 can be converted into the reciprocating linear motion of the plunger 45 through the connecting rod 43 and the slider 44. The reciprocating linear motion of the plunger 45 causes the volume of the working chamber in the pump head 46 to change periodically, so that the pump head 46 can realize the periodic opening and closing of liquid suction and discharge through the periodic change of volume, and finally realize the operation of sucking in or outputting high-pressure working fluid.

[0048] The number of the pump heads 46 here represents different types of pumped working fluids. In one embodiment, taking the pumping of two different types of working fluids as an example, the pump head 46 includes a first pump head and a second pump head, wherein the first pump head is connected to an emulsion pipeline 8, and a unloading valve 7 is provided on the first pump head, so that high-pressure emulsion is pumped through the first pump head. The emulsion pipeline 8 here includes an emulsion inlet pipe 81, an emulsion outlet pipe 82 and an emulsion unloading pipe 83.

[0049] Specifically, the suction port of the first pump head is connected to the emulsion inlet pipe 81, the discharge port of the first pump head is connected to the unloading valve 7, the high-pressure port of the first pump head is connected to the emulsion outlet pipe 82, and the low-pressure port of the unloading valve 7 is connected to the emulsion unloading pipe 83.

[0050] Based on the above structure, when the load pressure is lower than the set value, the low-pressure port of the unloading valve 7 is closed, and the high-pressure emulsion passes through the one-way valve in the unloading valve 7 and the emulsion outlet pipe 82, thereby providing high-pressure emulsion for the load; when the load pressure reaches the set value, the low-pressure port of the unloading valve 7 is opened, and the high-pressure emulsion flows back to the liquid tank through the emulsion unloading pipe 83 to reduce the power consumption of the first pump head.

[0051] On the other hand, the second pump head is connected to the spray water pipeline 9, and the second pump head is provided with an overflow valve 6, through which the second pump head is used to pump high-pressure spray water, and the spray water pipeline here at least includes a spray water inlet pipe 91, a spray water outlet pipe 92 and a spray water overflow pipe 93. The overflow valve 6 here can be electrically controlled, for example, an electrically controlled overflow valve, to achieve independent liquid supply control of the emulsion and the spray water.

[0052] Specifically, the suction port of the second pump head is connected to the spray water inlet pipe 91, the discharge port of the second pump head is connected to the overflow valve 6, the high-pressure port of the overflow valve 6 is connected to the spray water outlet pipe 92, and the low-pressure port of the overflow valve 6 is connected to the spray water overflow pipe 93.

[0053] Based on the above structure, when the load pressure is lower than the set value, the low-pressure port of the overflow valve 6 is closed, and the high-pressure spray water passes through the spray water outlet pipe 92 to provide high-pressure spray water for the load; when the load pressure exceeds the set value, the low-pressure port of the overflow valve 6 is moderately opened, and part of the spray water flows back to the water tank through the spray water overflow pipe 93 to keep the pressure of the output spray water not exceeding the set value.

[0054] The plunger pump group of the above-mentioned embodiment of the present disclosure has the dual functions of pumping emulsion and spray water. Specifically, it can drive two crankshafts 42 at the same time through a single input shaft, and then drive the two hydraulic ends of the unloading valve 7 and the overflow valve 6 respectively, so that the functions of the emulsion pump and the spray pump can be realized on a single plunger pump. For example, it can achieve the output of emulsion medium and spray water medium with an ultra-large flow rate of 1000L / min and above, and can realize the functions of both a traditional spray pump station and an emulsion pump station.

[0055] The above are only examples for emulsion and spray water. The present disclosure can not only meet the pressure control requirements of pump boosting and unloading of emulsion and spray water, but also meet the pumping requirements of other different types of media, and can realize the ultra-large flow liquid supply requirements in coal mines.

[0056] The disclosed embodiment forms a pump station capable of pumping different media based on a multi-crankshaft plunger pump, which can achieve multi-flow and multi-pressure output under large flow conditions of different media, simplify the configuration and control of the comprehensive mining fluid supply system, and improve the transmission efficiency of the hydraulic system.

[0057] In the above embodiments of the present disclosure, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0059] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present disclosure.

[0060] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A plunger pump set for multi-media, characterized in that: It includes a pump station base, on which a driving device and a multi-crank plunger pump driven by the driving device are arranged. The multi-crank plunger pump includes a body arranged on the pump station base, in which a plurality of crankshafts are arranged, and the crankshafts are connected to the output shaft of the driving device. A plurality of pump heads are arranged on the body, and the corresponding pump heads are driven by the crankshafts to pump a variety of working fluids at the same time.

2. The plunger pump assembly for multimedia according to claim 1, characterized in that: The multi-crankshaft plunger pump has a horizontally opposed structure, and the plurality of crankshafts are arranged parallel to each other and are consistent with the extension direction of the multi-crankshaft plunger pump.

3. The plunger pump assembly for multimedia according to claim 1, characterized in that: A coupling is arranged between the driving device and the multi-crank plunger pump.

4. The plunger pump assembly for multimedia according to claim 1, characterized in that: The crankshaft is connected to the pump head through a transmission device. A working chamber is arranged in the pump head. The movement of the crankshaft causes the volume of the working chamber to change periodically to drive the pump head to achieve liquid suction and liquid discharge.

5. The multi-medium plunger pump assembly according to claim 4, characterized in that: The transmission device at least includes a connecting rod, a slider and a piston. The crankshaft is connected to one side of the slider through the connecting rod, and the other side of the slider is connected to the piston. The piston is arranged in the working chamber.

6. The plunger pump assembly for multimedia according to claim 1, characterized in that: The multiple pump heads include a first pump head and a second pump head. The first pump head is connected to an emulsion pipeline, a unloading valve is arranged on the first pump head, and the emulsion is pumped through the first pump head. The second pump head is connected to a spray water pipeline, an overflow valve is arranged on the second pump head, and the spray water is pumped through the second pump head.

7. The multi-medium plunger pump assembly according to claim 6, characterized in that: The emulsion pipeline includes an emulsion inlet pipe, an emulsion outlet pipe and an emulsion unloading pipe. The suction port of the first pump head is connected to the emulsion inlet pipe, the discharge port of the first pump head is connected to the unloading valve, the high-pressure port of the first pump head is connected to the emulsion outlet pipe, and the low-pressure port of the unloading valve is connected to the emulsion unloading pipe.

8. The multi-medium plunger pump assembly according to claim 6, characterized in that: The spray water pipeline at least includes a spray water inlet pipe, a spray water outlet pipe and a spray water overflow pipe, the suction port of the second pump head is connected to the spray water inlet pipe, the discharge port of the second pump head is connected to the overflow valve, the high-pressure port of the overflow valve is connected to the spray water outlet pipe, and the low-pressure port of the overflow valve is connected to the spray water overflow pipe.

9. The plunger pump assembly for multimedia according to claim 1, characterized in that: It also includes a lubricating device, which is connected to the multi-crankshaft plunger pump through a pipeline.

10. The multi-medium plunger pump assembly according to claim 9, characterized in that: The machine body serves as an oil tank and is used in conjunction with the lubricating device.

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