A lubricating device and a plunger pump with the lubricating device

Abstract

The utility model relates to a kind of oiling device and plunger pump with oiling device, and the oiling device includes oil storage cylinder, oiling cylinder and connecting shell, and the oil storage cylinder has oil storage cavity;Oiling cylinder is provided with oiling cavity with the oil storage cavity intercommunication, and piston rod is equipped on the oiling cylinder, and piston rod and the cavity wall of oiling cavity are sealed sliding fit;Connecting shell is formed with connecting passage inward, and connecting passage is connected with oiling cavity and intercommunication;Multiple oil pipes are equipped on connecting shell, and the two ends of oil pipe are respectively connected with the corresponding oil inlet of connecting shell and plunger pump and intercommunication;Piston rod can reciprocate in oiling cavity along its axial direction, so that the butter in oil storage cavity flows to connecting passage through oiling cavity and flows out from multiple oil pipes simultaneously.The utility model has the advantages that the structure of the oiling device is simple, multiple oil pipes simultaneously inject oil to corresponding oil inlet, which simplifies single butter adding operation, saves time and effort, and improves the working efficiency of plunger pump.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pump technology, and in particular to an oil pumping device and a plunger pump with an oil pumping device. Background Technology

[0002] Piston pumps are important components in hydraulic systems. They rely on the reciprocating motion of pistons within a cylinder to change the volume of the sealed working chamber, thus achieving oil suction and pressure. They are widely used in applications requiring high pressure, high flow rates, and flow rate regulation. To prevent wear on the pistons under prolonged high-speed reciprocating motion, regular or continuous lubrication with grease is necessary.

[0003] In the existing technology, the common lubrication method is to add grease sequentially through multiple oil filling ports of the plunger pump using grease cups. However, this lubrication method is inefficient, and operators need to manually install the grease cups on the oil filling ports one by one. Each lubrication operation is time-consuming and labor-intensive, affecting the working efficiency of the plunger pump. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to provide an oil pumping device and a plunger pump with an oil pumping device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: An oiling device is applied to a plunger pump, the oiling device comprising: The oil storage tank has an oil storage cavity; An oil pump has an oil pumping chamber that communicates with the oil storage chamber. The oil pump is equipped with a piston rod, which is in a sealing sliding fit with the wall of the oil pumping chamber. The connecting housing has an inwardly formed connecting channel, which is connected to and communicates with the oil filling chamber; the connecting housing is provided with multiple oil supply pipes, and the two ends of the oil supply pipes are respectively connected to and communicate with the corresponding oil filling ports on the connecting housing and the plunger pump; The piston rod is capable of reciprocating within the oiling chamber along its own axial direction, so that the grease in the oil storage chamber flows through the oiling chamber to the connecting channel and flows out simultaneously from multiple oil delivery pipes.

[0006] Understandably, when the plunger pump needs grease, the operator can inject grease into the plunger pump's grease port by pressing the piston rod. Multiple oil lines simultaneously inject grease into the corresponding grease ports, simplifying the single grease filling operation, saving time and effort, increasing grease filling efficiency, and helping to improve the working efficiency of the plunger pump.

[0007] In one embodiment, a first spring is sleeved on the piston rod, with both ends of the first spring abutting between the pressing head of the piston rod and the oiling cylinder, respectively, to drive the piston rod to elastically return to its original position.

[0008] In one embodiment, the oiling chamber is provided with a steel ball and a second spring. The steel ball is located between the piston rod and the second spring. The steel ball can squeeze the second spring under the action of the piston rod and return to its original position under the elastic action of the second spring.

[0009] In one embodiment, a limiting step is formed on the inner wall of the oiling chamber, which can abut against the steel ball to limit the movement of the steel ball toward the piston rod.

[0010] In one embodiment, the oil storage cylinder is provided with a gasket and a first sealing ring. The first sealing ring is sleeved on the gasket so that the gasket is sealed to the cavity wall of the oil storage chamber, and the gasket can slide along the axial direction of the oil storage cylinder. The oil storage cylinder has a through hole on one end face away from the connecting shell, and the through hole communicates with the oil storage cavity.

[0011] In one embodiment, a second sealing ring is fitted onto the portion of the piston rod that extends into the oiling chamber, and the second sealing ring is in a sealing fit with the oiling chamber.

[0012] In one embodiment, the connection channel includes a first connection channel and a second connection channel that are interconnected and communicate with each other, wherein the first connection channel and the second connection channel are arranged perpendicularly to each other.

[0013] In one embodiment, the oil pump and the connecting housing are configured as a single unit.

[0014] In one embodiment, the connecting housing is further provided with a connecting hole, which communicates with the connecting channel, and a sealing plug is detachably installed in the connecting hole.

[0015] This utility model also provides the following technical solution: A plunger pump with an oiling device includes a plunger pump and the oiling device described in any one of the above.

[0016] The advantages of this utility model: This utility model claims an oiling device and a plunger pump with an oiling device. When the plunger pump needs to be filled with grease, the operator can inject grease into the oiling port of the plunger pump by pressing the piston rod. Multiple oil supply pipes simultaneously fill the corresponding oiling ports, simplifying the single grease filling operation, saving time and effort, and improving the oiling efficiency, which is conducive to improving the working efficiency of the plunger pump. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of a plunger pump with an oiling device provided in an embodiment of the present invention; Figure 2 This is an exploded view of an oiling device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of an oil dispenser and connecting housing provided in an embodiment of the present invention. Figure 4 for Figure 3 Sectional view at point AA; Figure 5 This is a schematic diagram of the oil dispenser and connecting housing provided in one embodiment of the present invention from another perspective; Figure 6 for Figure 5 Sectional view at point BB.

[0019] Reference numerals: 100, oil pumping device; 10, oil reservoir; 11, oil storage chamber; 12, through hole; 13, gasket; 20, oil pumping cylinder; 21, oil pumping chamber; 211, limiting step; 22, piston rod; 221, pressing head; 222, second sealing ring; 23, first spring; 24, steel ball; 25, second spring; 30, connecting housing; 31, connecting channel; 311, first connecting channel; 312, second connecting channel; 32, oil supply pipe; 33, oil passage hole; 34, connecting hole; 200, plunger pump; 300, bracket. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figure 1 and Figure 2This utility model provides an oiling device 100, applied to a plunger pump 200. The oiling device 100 includes an oil storage cylinder 10, an oiling cylinder 20, and a connecting housing 30. The oil storage cylinder 10 has an oil storage chamber 11 for storing grease. The oiling cylinder 20 has an oiling chamber 21 communicating with the oil storage chamber 11. The oiling cylinder 20 is provided with a piston rod 22, which is in a sealing sliding fit with the cavity wall of the oiling chamber 21. The connecting housing 30 has an inwardly formed connecting channel 31, which is connected and communicates with the oiling chamber 21. The connecting housing 30 is provided with multiple oil delivery pipes 32, and the two ends of the oil delivery pipes 32 are respectively connected and communicated with the corresponding oil filling ports on the connecting housing 30 and the plunger pump 200.

[0026] The piston rod 22 can reciprocate within the grease chamber 21 along its axial direction, allowing the grease in the reservoir 11 to flow through the grease chamber 21 to the connecting channel 31 and simultaneously flow out from multiple oil supply pipes 32. This achieves continuous and stable delivery of grease from the reservoir 11 to the grease inlet, improving lubrication efficiency. Thus, when the plunger pump 200 needs grease, the operator can inject grease into the grease inlet of the plunger pump 200 by pressing the piston rod 22. Multiple oil supply pipes 32 can simultaneously grease the corresponding grease inlets, simplifying the single grease filling operation, saving time and effort, increasing grease filling efficiency, and improving the working efficiency of the plunger pump 200.

[0027] In this embodiment, the oil pump 20 and the connecting housing 30 are designed as a single unit for ease of processing. The oil pump 20, the connecting housing 30, and the oil storage tank 10 are all made of plastic.

[0028] Furthermore, a first spring 23 is fitted onto the piston rod 22. The two ends of the first spring 23 abut against the pressing head 221 of the piston rod 22 and the oil pump 20, respectively, to drive the piston rod 22 to elastically return to its original position. The piston rod 22 automatically returns to its original position, making operation easier.

[0029] like Figure 3 and Figure 4 As shown, in one embodiment, the grease filling chamber 21 is equipped with a steel ball 24 and a second spring 25. The steel ball 24 is located between the piston rod 22 and the second spring 25. The steel ball 24 can compress the second spring 25 under the action of the piston rod 22 and return to its original position under the elastic action of the second spring 25. In this way, the steel ball 24 and the second spring 25 form a structure similar to a one-way valve to prevent grease backflow.

[0030] like Figure 4 As shown. Furthermore, a limiting step 211 is formed on the inner wall of the oiling chamber 21. The limiting step 211 can collide with the steel ball 24 to limit the movement of the steel ball 24 toward the piston rod 22, ensuring that the stroke of the steel ball 24 is controllable.

[0031] like Figure 4As shown, in one embodiment, the oil reservoir 10 is provided with a gasket 13 and a first sealing ring. The first sealing ring is sleeved on the gasket 13 so that the gasket 13 is in a sealing fit with the cavity wall of the oil reservoir 11, and the gasket 13 can slide along the axial direction of the oil reservoir 10. A through hole 12 is provided on the end face of the oil reservoir 10 away from the connecting housing 30, and the through hole 12 communicates with the oil reservoir 11.

[0032] With this configuration, the gasket 13 divides the oil storage chamber 11 into two chambers. The part closer to the oil pump 20 is connected to the oil pump 20 and cooperates with the gasket 13 to form a sealed chamber where the grease is located. The part farther away from the oil pump 20 is connected to the outside air. In this way, when the grease is pumped into the plunger pump 200, as the volume of grease in the oil storage chamber 10 decreases, the gasket 13 can move towards the oil pump chamber 21 under the action of atmospheric pressure, ensuring smooth grease delivery.

[0033] Furthermore, the oil reservoir 10 is threadedly connected to the grease pump 20, making it easy to disassemble and install, and facilitating the addition of grease to the oil reservoir 10. When adding grease to the oil reservoir 10, an external tool can be inserted through the through hole 12 and push the gasket 13 to expel excess air from the grease, preventing air from being injected into the plunger pump 200.

[0034] like Figure 2 As shown, in one embodiment, a second sealing ring 222 is provided inside the grease filling chamber 21. The second sealing ring 222 is sleeved on the piston rod 22 to ensure a sealing fit between the piston rod 22 and the cavity wall of the grease filling chamber 21, preventing grease leakage between the piston rod 22 and the grease filling chamber 21, and improving the sealing performance and operational reliability of the grease filling chamber 21. Multiple second sealing rings 222 are arranged at intervals along the axial direction of the piston rod 22.

[0035] like Figure 5 and Figure 6 As shown, in this embodiment, the connecting channel 31 includes a first connecting channel 311 and a second connecting channel 312 that are interconnected and communicate with each other. The first connecting channel 311 and the second connecting channel 312 are arranged perpendicularly to facilitate the material handling and processing of the connecting housing 30. The first connecting channel 311 communicates with the oil filling chamber 21, and the second connecting channel 312 is connected to multiple oil delivery pipes 32. The length of the second connecting channel 312 is greater than that of the connecting channel 312, and the multiple oil delivery pipes 32 are arranged at intervals along the length direction of the second connecting channel 312.

[0036] Specifically, the connecting housing 30 has three oil passage holes 33, which are connected to the second connecting channel 312 and are arranged at intervals along the length of the second connecting channel 312 to connect the corresponding oil pipes 32.

[0037] Not limited to this, in other embodiments, the connection channel 31 may also be configured in other shapes, which are not limited here.

[0038] like Figure 2 and Figure 6 As shown, in one embodiment, the connecting housing 30 is further provided with a connecting hole 34, which communicates with the connecting channel 31. A sealing plug is detachably installed in the connecting hole 34. The sealing plug is used for sealing and filling after the connecting housing 30 is processed and the channel wall of the connecting channel 31 is sealed.

[0039] In addition, when it is necessary to add an oil supply pipe 32, the sealing plug can be removed, and the connecting hole 34 can be used as a spare oil passage hole 33 to connect the oil supply pipe 32.

[0040] This utility model also provides a plunger pump 200, including the plunger pump 200 and the above-mentioned oiling device 100. The oiling device 100 is installed on the plunger pump 200 body through an L-shaped bracket 300.

[0041] like Figure 1 As shown, in this embodiment, the plunger pump 200 is a three-cylinder plunger pump 200, which has three oil inlets and three corresponding oil supply pipes 32. The grease applicator 100 occupies little space, is simple and quick to operate, and can be installed on the plunger pump 200 for a long time. The grease applicator 100 has high efficiency in adding grease, which helps to improve the working efficiency of the plunger pump 200.

[0042] In other embodiments, the plunger pump 200 may also be a four-cylinder plunger pump 200, which has four oil inlets and four corresponding oil supply pipes 32.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the patent protection scope of this utility model should be determined by the appended claims.

Claims

1. An oil pumping device, applied to a plunger pump (200), characterized in that, The oiling device (100) includes: The oil storage cylinder (10) has an oil storage chamber (11); An oil pump (20) is provided with an oil pumping chamber (21) that communicates with the oil storage chamber (11). A piston rod (22) is provided on the oil pump (20), and the piston rod (22) is in a sealed sliding fit with the cavity wall of the oil pumping chamber (21). The connecting housing (30) has an inwardly formed connecting channel (31), which is connected and communicates with the oil filling chamber (21); the connecting housing (30) is provided with multiple oil supply pipes (32), and the two ends of the oil supply pipes (32) are respectively connected and communicated with the corresponding oil filling ports on the connecting housing (30) and the plunger pump (200); The piston rod (22) can reciprocate within the oiling chamber (21) along its own axial direction, so that the butter in the oil storage chamber (11) flows through the oiling chamber (21) to the connecting channel (31) and flows out simultaneously from multiple oil delivery pipes (32).

2. The oiling device according to claim 1, characterized in that, A first spring (23) is fitted on the piston rod (22). The two ends of the first spring (23) abut against the pressing head of the piston rod (22) and the oiling cylinder (20) respectively, so as to drive the piston rod (22) to elastically return to its original position.

3. The oiling device according to claim 1, characterized in that, The oiling chamber (21) is provided with a steel ball (24) and a second spring (25). The steel ball (24) is located between the piston rod (22) and the second spring (25). The steel ball (24) can squeeze the second spring (25) under the action of the piston rod (22) and return to its original position under the elastic action of the second spring (25).

4. The oiling device according to claim 3, characterized in that, A limiting step (211) is formed on the inner wall of the oiling chamber (21). The limiting step (211) can collide with the steel ball (24) to limit the movement of the steel ball (24) toward the piston rod (22).

5. The oiling device according to claim 1, characterized in that, The oil storage cylinder (10) is provided with a gasket (13) and a first sealing ring. The first sealing ring is sleeved on the gasket (13) so that the gasket (13) is sealed to the cavity wall of the oil storage chamber (11), and the gasket (13) can slide along the axial direction of the oil storage cylinder (10). The oil storage cylinder (10) has a through hole (12) on one end face away from the connecting shell (30), and the through hole (12) is connected to the oil storage cavity (11).

6. The oiling device according to claim 1, characterized in that, The portion of the piston rod (22) that extends into the oiling chamber (21) is fitted with a second sealing ring (222), and the second sealing ring (222) is in a sealing fit with the oiling chamber (21).

7. The oiling device according to claim 1, characterized in that, The connection channel (31) includes a first connection channel (311) and a second connection channel (312) that are connected to each other and communicate with each other. The first connection channel (311) and the second connection channel (312) are arranged perpendicularly.

8. The oiling device according to claim 1, characterized in that, The oil pump (20) and the connecting housing (30) are designed as a single unit.

9. An oiling device according to claim 1, characterized in that, The connecting housing (30) is also provided with a connecting hole (34), which is connected to the connecting channel (31), and a sealing plug is detachably installed in the connecting hole (34).

10. A plunger pump with an oil pumping device, characterized in that, It includes a plunger pump (200) and an oiling device (100) as described in any one of claims 1-9.

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