Opposed plunger pump

Abstract

The invention relates to the technical field of pumping equipment, in particular to an opposed plunger pump which comprises a base, a driving device and a plunger pump body. The plunger pump body comprises a crankshaft, a first connecting rod, a second connecting rod, a first pump head and a second pump head, the crankshaft is in driving connection with the driving device, the first connecting rod and the second connecting rod are located on the two sides of the crankshaft respectively, the first connecting rod is connected between the crankshaft and the first pump head, and the second connecting rod is connected between the crankshaft and the second pump head. According to the opposed plunger pump, the crankshaft drives the first connecting rod and the second connecting rod on the left side and the right side to do linear reciprocating motion at the same time, then periodic opening and closing of liquid suction and drainage valves in the first pump head and the second pump head on the left side and the right side are achieved, high-pressure working liquid is sucked in and output, the multi-pump-head pumping effect is achieved, and the system is simple in structure and convenient to operate. The occupied area is small, the weight is light, the pump heads on the left side and the right side can be independently overhauled and maintained, and cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pumping equipment, and in particular to an opposed plunger pump. Background Art

[0002] The emulsion pumps and spray pumps in traditional fully mechanized mining working faces have different requirements for flow, pressure and medium. Therefore, multiple emulsion pumps and spray pumps need to be connected in parallel to form a liquid supply system. This requires a large number of equipment, a complex system, a large occupied area, a heavy weight, and high use and maintenance costs. Summary of the invention

[0003] The present invention provides an opposed plunger pump to solve the defects in the prior art that an emulsion pump, a spray pump and multiple pumps need to be connected in parallel to form a liquid supply system for use, which has the disadvantages of a large number of devices, a complex system, a large occupied area, a heavy weight, and high use and maintenance costs.

[0004] The present invention provides an opposed plunger pump, comprising: Base; A driving device, arranged on the base; A plunger pump body is arranged on the base; The plunger pump body includes: a crankshaft, a first connecting rod, a second connecting rod, a first pump head and a second pump head. The crankshaft is drivingly connected to the driving device. The first connecting rod and the second connecting rod are respectively located on both sides of the crankshaft. The first connecting rod is connected between the crankshaft and the first pump head, and the second connecting rod is connected between the crankshaft and the second pump head.

[0005] The opposed plunger pump provided by the present invention further comprises: an emulsion inlet pipe, connected between the suction port of the first pump head and the emulsion tank, and used for conveying the emulsion into the first pump head; The emulsion outlet pipe is connected to the discharge port of the first pump head to provide the pressure of the emulsion for the load.

[0006] The opposed plunger pump provided according to the present invention further includes: a unloading valve, wherein the unloading valve is connected to the discharge port of the first pump head, and the emulsion outlet pipe is connected to the discharge port of the first pump head through the unloading valve.

[0007] The opposed plunger pump provided according to the present invention further includes: an emulsion unloading pipe connected between the unloading valve and the emulsion tank, and used for returning the emulsion to the emulsion tank.

[0008] The opposed plunger pump provided by the present invention further comprises: A spray water inlet pipe is connected between the suction port of the second pump head and the spray water tank, and is used to transport spray water into the second pump head; The spray water outlet pipe is connected to the discharge port of the second pump head to provide the load with the pressure of the spray water.

[0009] The opposed plunger pump provided according to the present invention further includes: an overflow valve, wherein the overflow valve is connected to the discharge port of the second pump head, and the spray water outlet pipe is connected to the discharge port of the second pump head through the overflow valve.

[0010] The opposed plunger pump provided according to the present invention further includes: a spray water overflow pipe connected between the overflow valve and the spray water tank, and used for returning the spray water to the spray water tank.

[0011] The opposed plunger pump provided by the present invention further comprises: a first slider, a second slider, a first plunger and a second plunger; A first chamber is formed on one side of the plunger pump body, and a second chamber is formed on the other side of the plunger pump body, the first slider is slidably disposed in the first chamber, and the second slider is slidably disposed in the second chamber; The first connecting rod is connected to the first pump head through the first slider and the first plunger, and the second connecting rod is connected to the second pump head through the second slider and the second plunger.

[0012] According to the opposed plunger pump provided by the present invention, the driving device includes: a motor, a coupling and a reducer, the motor is connected to the reducer through the coupling, and the reducer is connected to the crankshaft.

[0013] The opposed plunger pump provided according to the present invention further includes: a lubrication system, which is arranged on the base and is used to store lubricating oil to lubricate and cool the plunger pump body.

[0014] The present invention provides an opposed plunger pump, which includes: a base, a driving device and a plunger pump body. The driving device is arranged on the base; the plunger pump body is arranged on the base. The plunger pump body includes: a crankshaft, a first connecting rod, a second connecting rod, a first pump head and a second pump head. The crankshaft is connected to the driving device by driving, the first connecting rod and the second connecting rod are respectively located on both sides of the crankshaft, the first connecting rod is connected between the crankshaft and the first pump head, and the second connecting rod is connected between the crankshaft and the second pump head. The present invention provides an opposed plunger pump, which uses a driving device to drive the crankshaft in the plunger pump body to rotate, and the crankshaft simultaneously drives the first connecting rod and the second connecting rod on the left and right sides to perform linear reciprocating motion, thereby realizing the periodic opening and closing of the suction and discharge valves in the first pump head and the second pump head on the left and right sides, sucking and outputting high-pressure working fluid, so as to achieve the pumping effect of multiple pump heads; the present invention is an opposed single-acting multi-plunger pump, which has two pump heads, a simple system structure, small occupied area, light weight, and can be inspected and maintained separately for the pump heads on the left and right sides, reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the opposed plunger pump provided by the present invention.

[0017] Figure 2 It is a structural schematic diagram of the plunger pump body provided by the present invention.

[0018] Figure 3 It is a schematic diagram of the connection between the plunger pump body and various pipelines provided by the present invention.

[0019] Reference numerals: 1. Base; 2. Motor; 3. Coupling; 4. Reducer; 5. Piston pump body; 6. Lubrication system; 7. Unloading valve; 8. Overflow valve; 51. crankshaft; 52. first connecting rod; 53. second connecting rod; 54. first pump head; 55. second pump head; 56. first slider; 57. second slider; 58. first plunger; 59. second plunger; 9. Emulsion inlet pipe; 10. Emulsion outlet pipe; 11. Emulsion unloading pipe; 12. Spray water overflow pipe; 13. Spray water outlet pipe; 14. Spray water inlet pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Combine the following Figure 1-Figure 3 The opposed plunger pump of the present invention is described as follows. The opposed plunger pump comprises: a base 1 , a driving device and a plunger pump body 5 .

[0026] The driving device is arranged on the base 1 ; the plunger pump body 5 is arranged on the base 1 .

[0027] The plunger pump body 5 includes: a crankshaft 51, a first connecting rod 52, a second connecting rod 53, a first pump head 54 and a second pump head 55. The crankshaft 51 is drivingly connected to the driving device. The first connecting rod 52 and the second connecting rod 53 are respectively located on both sides of the crankshaft 51. The first connecting rod 52 is connected between the crankshaft 51 and the first pump head 54, and the second connecting rod 53 is connected between the crankshaft 51 and the second pump head 55.

[0028] Specifically, the base 1 serves as the installation and support component for the remaining components of the opposed plunger pump. The drive device and the plunger pump body 5 are all installed on the base 1. The drive device provides driving force for the plunger pump body 5. Generally, the drive form of an electric motor with a coupling 3 and a reducer 4 can be adopted.

[0029] The plunger pump body 5 adopts a double pump head form, and the double pump heads are of left and right opposed design. Specifically, it consists of a crankshaft 51, a first connecting rod 52 and a second connecting rod 53 on the left and right sides, and a first pump head 54 and a second pump head 55 on the left and right sides. The crankshaft 51 rotates under the drive of the driving device, and is converted into a linear reciprocating motion through the first connecting rod 52 and the second connecting rod 53 on the left and right sides, thereby realizing the periodic change of the volume of the working chamber in the first pump head 54 and the second pump head 55 on the left and right sides, forcing the suction and discharge valves in the first pump head 54 and the second pump head 55 to open and close periodically, sucking in and outputting high-pressure working fluid, so as to achieve the pumping effect of multiple pump heads.

[0030] It should be understood that a plurality of the first connecting rod 52 and the second connecting rod 53 can be provided according to actual needs.

[0031] Furthermore, the opposed plunger pump provided by the present invention uses a first pump head 54 and a second pump head 55 which are respectively the pump head of an emulsion pump and the pump head of a spray pump, and thus has the dual functions of an emulsion pump and a spray pump.

[0032] The present invention provides an opposed plunger pump, which includes: a base 1, a driving device and a plunger pump body 5. The driving device is arranged on the base 1; the plunger pump body 5 is arranged on the base 1. The plunger pump body 5 includes: a crankshaft 51, a first connecting rod 52, a second connecting rod 53, a first pump head 54 and a second pump head 55. The crankshaft 51 is drivingly connected to the driving device, the first connecting rod 52 and the second connecting rod 53 are respectively located on both sides of the crankshaft 51, the first connecting rod 52 is connected between the crankshaft 51 and the first pump head 54, and the second connecting rod 53 is connected between the crankshaft 51 and the second pump head 55. The present invention provides an opposed plunger pump, which adopts a driving device to drive the crankshaft 51 in the plunger pump body 5 to rotate, and the crankshaft 51 simultaneously drives the first connecting rod 52 and the second connecting rod 53 on the left and right sides to perform linear reciprocating motion, thereby realizing the periodic opening and closing of the suction and discharge valves in the first pump head 54 and the second pump head 55 on the left and right sides, sucking in and outputting high-pressure working fluid to achieve the pumping effect of multiple pump heads; the present invention is an opposed single-acting multi-plunger pump with two pump heads, simple system structure, small occupied area, light weight, and the pump heads on the left and right sides can be inspected and maintained separately to reduce costs.

[0033] In one embodiment of the present invention, the opposed plunger pump further includes: an emulsion inlet pipe 9 and an emulsion outlet pipe 10. The emulsion inlet pipe 9 is connected between the suction port of the first pump head 54 and the emulsion tank, and is used to transport the emulsion into the first pump head 54; the emulsion outlet pipe 10 is connected to the discharge port of the first pump head 54 to provide the pressure of the emulsion to the load. Specifically, the emulsion tank is connected to the first pump head 54 through the emulsion inlet pipe 9, and the emulsion is sucked in through the suction port of the first pump head 54. The emulsion outlet pipe 10 is connected between the first pump head 54 and the load, and the high-pressure emulsion is provided to the load through the discharge port of the first pump head 54.

[0034] In one embodiment of the present invention, the opposed plunger pump further includes: an unloading valve 7, the unloading valve 7 is connected to the discharge port of the first pump head 54, and the emulsion outlet pipe 10 is connected to the discharge port of the first pump head 54 through the unloading valve 7. Specifically, the unloading valve 7 is connected to the discharge port of the first pump head 54, so that excess fluid can flow back to the emulsion tank or other low-pressure areas through the valve, thereby preventing the system from being overloaded or damaged. Further, the opposed plunger pump further includes: an emulsion unloading pipe 11, connected between the unloading valve 7 and the emulsion tank, for returning the emulsion to the emulsion tank. Specifically, the high-pressure port of the unloading valve 7 is connected to the emulsion outlet pipe 10, and the low-pressure port of the unloading valve 7 is connected to the emulsion unloading pipe 11; 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 10 to provide 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 emulsion flows back to the emulsion tank through the emulsion unloading pipe 11 to reduce the power consumption of the pump.

[0035] In one embodiment of the present invention, the opposed plunger pump further includes: a spray water inlet pipe 14 and a spray water outlet pipe 13. The spray water inlet pipe 14 is connected between the suction port of the second pump head 55 and the spray water tank, and is used to transport spray water into the second pump head 55; the spray water outlet pipe 13 is connected to the discharge port of the second pump head 55 to provide the pressure of the spray water for the load. Specifically, the spray water tank is connected to the second pump head 55 through the spray water inlet pipe 14, and the spray water is sucked through the suction port of the second pump head 55. The spray water outlet pipe 13 is connected between the second pump head 55 and the load, and the high-pressure spray water is provided to the load through the discharge port of the second pump head 55.

[0036] In one embodiment of the present invention, the opposed plunger pump further includes: an overflow valve 8, the overflow valve 8 is connected to the discharge port of the second pump head 55, and the spray water outlet pipe 13 is connected to the discharge port of the second pump head 55 through the overflow valve 8. Specifically, the overflow valve 8 is connected to the discharge port of the second pump head 55, allowing part of the spray water to flow out of the second pump head 55, thereby reducing the pressure of the second pump head 55 to a safe range. Further, the opposed plunger pump further includes: a spray water overflow pipe 12, connected between the overflow valve 8 and the spray water tank, for returning the spray water to the spray water tank. Specifically, the high-pressure port of the overflow valve 8 is connected to the spray water outlet pipe 13, and the low-pressure port of the overflow valve 8 is connected to the spray water overflow pipe 12; when the load pressure is lower than the set value, the low-pressure port of the overflow valve 8 is closed, and the high-pressure spray water passes through the spray water outlet pipe 13 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 8 is moderately opened, and part of the spray water flows back to the spray water tank through the overflow pipe to keep the pressure of the output spray water not exceeding the set value.

[0037] In one embodiment of the present invention, the opposed plunger pump further includes: a first slider 56, a second slider 57, a first plunger 58 and a second plunger 59. A first chamber is formed on one side of the plunger pump body 5, and a second chamber is formed on the other side of the plunger pump body 5. The first slider 56 is slidably disposed in the first chamber, and the second slider 57 is slidably disposed in the second chamber. The first connecting rod 52 is connected to the first pump head 54 through the first slider 56 and the first plunger 58, and the second connecting rod 53 is connected to the second pump head 55 through the second slider 57 and the second plunger 59. In this embodiment, chambers for the movement of the first slider 56 and the second slider 57, i.e., the first chamber and the second chamber, are formed on both sides of the plunger pump body 5, and the movement of the first connecting rod 52 and the second connecting rod 53 drives the first plunger 58 and the second plunger 59 to perform linear reciprocating motion, thereby realizing that the first pump head 54 and the second pump head 55 on the left and right sides inhale and output high-pressure working fluid.

[0038] Based on the structure of the above embodiment, the opposed plunger pump of the present invention has dual suction and discharge pipelines, and realizes the functions of emulsion pump and spray pump at the same time, and can achieve the output of ultra-large flow emulsion medium and spray water medium of 1000L / min and above.

[0039] In one embodiment of the present invention, the driving device includes: a motor 2, a coupling 3 and a reducer 4, the motor 2 is connected to the reducer 4 through the coupling 3, and the reducer 4 is connected to the crankshaft 51. The motor 2, the coupling 3 and the reducer 4 are all installed on the base 1, the output shaft of the motor 2 is connected to the reducer 4 through the coupling 3, and the reducer 4 drives the crankshaft 51 to rotate.

[0040] In one embodiment of the present invention, the opposed plunger pump also includes: a lubrication system 6, which is arranged on the base 1 and is used to store lubricating oil, lubricate and cool the plunger pump body 5. In order to ensure the long-term and efficient operation of the plunger pump, lubrication is a very critical link. The lubrication system 6 of the plunger pump not only reduces the friction between the moving parts and prolongs the service life of the pump, but also helps dissipate heat and improves the overall performance of the pump. Specifically, the lubrication system 6 has the following functions: The role of the lubrication system 6: 1. Reduce wear: By forming a layer of oil film between the contact surfaces, the direct contact between the metals is reduced and the wear is reduced; 2. Cooling: The lubricant can help take away the heat generated by mechanical movement and prevent overheating; 3. Sealing: Proper lubrication helps to enhance the sealing effect between the plunger and the cylinder body; 4. Cleaning: The lubricant can carry away small particles of impurities inside the system to keep the inside clean. Common lubrication methods include splash lubrication, forced lubrication and oil bath lubrication.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An opposed plunger pump, characterized in that: include: Base (1); A driving device, arranged on the base (1); A plunger pump body (5) is arranged on the base (1); The plunger pump body (5) comprises: a crankshaft (51), a first connecting rod (52), a second connecting rod (53), a first pump head (54) and a second pump head (55); the crankshaft (51) is drivingly connected to the driving device; the first connecting rod (52) and the second connecting rod (53) are respectively located on both sides of the crankshaft (51); the first connecting rod (52) is connected between the crankshaft (51) and the first pump head (54); and the second connecting rod (53) is connected between the crankshaft (51) and the second pump head (55).

2. The opposed plunger pump according to claim 1, characterized in that: Also includes: an emulsion inlet pipe (9), connected between the suction port of the first pump head (54) and the emulsion tank, and used for conveying the emulsion into the first pump head (54); The emulsion outlet pipe (10) is connected to the discharge port of the first pump head (54) to provide the load with the pressure of the emulsion.

3. The opposed plunger pump according to claim 2, characterized in that: Also includes: An unloading valve (7), the unloading valve (7) being connected to the discharge port of the first pump head (54), and the emulsion outlet pipe (10) being connected to the discharge port of the first pump head (54) through the unloading valve (7).

4. The opposed plunger pump according to claim 3, characterized in that: Also includes: An emulsion unloading pipe (11) is connected between the unloading valve (7) and the emulsion tank and is used to return the emulsion to the emulsion tank.

5. The opposed plunger pump according to claim 1, characterized in that: Also includes: A spray water inlet pipe (14) connected between the suction port of the second pump head (55) and the spray water tank, and used for conveying spray water into the second pump head (55); The spray water outlet pipe (13) is connected to the discharge port of the second pump head (55) to provide spray water pressure for the load.

6. The opposed plunger pump according to claim 5, characterized in that: Also includes: An overflow valve (8), the overflow valve (8) being connected to the discharge outlet of the second pump head (55), and the spray water outlet pipe (13) being connected to the discharge outlet of the second pump head (55) through the overflow valve (8).

7. The opposed plunger pump according to claim 6, characterized in that: Also includes: A spray water overflow pipe (12) is connected between the overflow valve (8) and the spray water tank and is used to return the spray water to the spray water tank.

8. The opposed plunger pump according to any one of claims 1 to 7, characterized in that: Also includes: A first slider (56), a second slider (57), a first plunger (58) and a second plunger (59); A first chamber is formed on one side of the plunger pump body (5), and a second chamber is formed on the other side of the plunger pump body (5); the first slider (56) is slidably disposed in the first chamber, and the second slider (57) is slidably disposed in the second chamber; The first connecting rod (52) is connected to the first pump head (54) via the first slider (56) and the first plunger (58), and the second connecting rod (53) is connected to the second pump head (55) via the second slider (57) and the second plunger (59).

9. The opposed plunger pump according to any one of claims 1 to 7, characterized in that: The driving device comprises: a motor (2), a coupling (3) and a reducer (4); the motor (2) is connected to the reducer (4) via the coupling (3); and the reducer (4) is connected to the crankshaft (51).

10. The opposed plunger pump according to any one of claims 1 to 7, characterized in that: Also includes: A lubrication system (6) is provided on the base (1) and is used to store lubricating oil and to lubricate and cool the plunger pump body (5).

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