A plunger pump for use with high viscosity lubricating oil

Abstract

This utility model belongs to the technical field of liquid pumps or elastic fluid pumps, and provides a plunger pump for high-viscosity lubricating oil. The plunger pump includes a cylinder assembly, a first cover, a valve body assembly, a plunger, and a drive assembly. The cylinder assembly is detachably connected to a first mounting base, a cylinder body, and a second mounting base. The first cover is detachably connected to one end of the first mounting base. The valve body assembly is detachably connected to a second cover, an upper valve body, a middle valve body, and a lower valve body, and also includes an upper valve disc and a lower valve disc, which are located in the upper and lower valve bodies, respectively. The drive assembly is connected to the end of the plunger. This plunger pump has significant advantages in maintenance, cleaning, and suction adjustment; it solves the problems of difficult maintenance and unadjustable suction in existing plunger pumps when pumping high-viscosity fluids.

Description

Technical Field

[0001] This utility model relates to the field of liquid pump or elastic fluid pump technology, and more specifically, to a plunger pump for use with high viscosity lubricating oil. Background Technology

[0002] Currently, plunger pumps are widely used in the oil extraction industry to transport high-viscosity lubricating oils. However, existing plunger pumps face some technical challenges when dealing with such special fluids.

[0003] Existing plunger pumps are typically one-piece molded. When internal components wear out or malfunction and require maintenance, the disassembly and replacement process is often very cumbersome, requiring specialized technicians and tools, and consuming a significant amount of time and effort. Especially when conveying high-viscosity lubricating oils, the fluid easily forms stubborn oil deposits and sediments in the confined space inside the pump and on the surfaces of components, further increasing the difficulty of cleaning and maintenance. Furthermore, in practical applications, different operating conditions or different viscosities of lubricating oil may require different pump suction (i.e., flow rate). However, traditional plunger pumps are often designed with a fixed displacement, which limits their adaptability and flexibility in different application scenarios; they cannot easily adjust the suction according to actual needs.

[0004] Therefore, it is necessary to design a plunger pump that is easy to maintain and has adjustable suction. Utility Model Content

[0005] The purpose of this invention is to provide a plunger pump for use with high-viscosity lubricating oil, so as to solve the above-mentioned problems in the prior art.

[0006] A plunger pump for use with high-viscosity lubricating oil, characterized in that it comprises a cylinder assembly, a first cover, a valve body assembly, a plunger, and a drive assembly; wherein:

[0007] The cylinder assembly is composed of a first mounting base, a cylinder body, and a second mounting base that are detachably connected in sequence, providing space for the movement of the plunger;

[0008] The first cover is detachably connected to one end of the first mounting base to limit the plunger;

[0009] The valve body assembly is composed of a second cover, an upper valve body, a middle valve body, and a lower valve body that are detachably connected in sequence. It also includes an upper valve flap and a lower valve flap, which are located in the upper valve body and the lower valve body, respectively, for the device to suck up and discharge materials.

[0010] A drive assembly, connected to the end of the plunger, provides power for the reciprocating motion of the plunger.

[0011] Furthermore, the valve body assembly includes a second cover, an upper valve body, a middle valve body, a lower valve body, an upper valve disc, and a lower valve disc. The second cover is detachably connected to the top of the upper valve body. The middle valve body is detachably connected to the first mounting base. The upper valve body and the lower valve body are both detachably connected to the middle valve body. The upper valve body has a discharge port on its side wall, and the lower valve body has a feed port at its bottom. The upper valve disc is located inside the upper valve body, and the lower valve disc is located inside the lower valve body. The upper valve disc and the lower valve disc are slidably connected.

[0012] Furthermore, the cylinder assembly includes a first mounting base, a second mounting base, and a cylinder body. One end of the first mounting base is detachably connected to the second mounting base, and the other end of the first mounting base is detachably connected to the first cover. The cylinder body is located within the mounting cavity formed by the connection of the first mounting base and the second mounting base.

[0013] Furthermore, the bottom of the upper valve disc is provided with a receiving cavity that matches the top of the lower valve disc, and a spring is provided in the receiving cavity; a first through hole is provided at the central axis position of the upper valve disc, the first through hole communicates with the receiving cavity, and an adjustment component is provided in the first through hole.

[0014] Furthermore, the adjustment assembly includes an adjustment rod, a rotating handle, and a shim. The rotating handle is connected to the top of the adjustment rod, the shim is connected to the bottom of the adjustment rod, and the shim is located within the receiving cavity.

[0015] Furthermore, a second through hole adapted to the adjusting rod is provided at the central axis position of the second cover, and the adjusting rod is threadedly connected to the second through hole.

[0016] Furthermore, the adjusting rod is slidably connected to the upper valve disc.

[0017] The portion of the adjusting rod that contacts the first through hole is a smooth curved surface.

[0018] Furthermore, both the feed inlet and the discharge outlet are equipped with check valves.

[0019] In summary, this utility model has the following beneficial effects:

[0020] First, both the cylinder block assembly and valve body assembly of the plunger pump adopt a detachable connection method, and the detachable structural design makes it easy to clean and maintain each component;

[0021] Secondly, the regulating component and the valve body assembly work together to control the flow rate of the plunger pump. Simply by rotating the handle, the spring force can be changed, thereby adjusting the clearance between the upper and lower valve discs and altering the suction force of the plunger pump.

[0022] In addition, both the inlet and outlet are equipped with check valves. The check valves at the inlet and outlet work together to optimize the performance of the plunger pump in terms of both suction and pumping capacity, enabling the plunger pump to better meet the needs of conveying high-viscosity lubricating oil.

[0023] In summary, the plunger pump of this invention has significant advantages in terms of maintenance and cleaning, suction adjustment, and adaptability to the transportation of high-viscosity fluids; it solves the problems of difficult maintenance and unadjustable suction of existing plunger pumps when pumping high-viscosity fluids. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a cross-sectional view provided by this utility model.

[0026] Legend: 1-First mounting seat; 2-Second mounting seat; 3-First cover; 4-Cylinder; 5-Plunger; 6-Adjusting assembly; 7-Second cover; 8-Upper valve body; 9-Check valve; 10-Middle valve body; 11-Lower valve body; 12-Upper valve disc; 13-Lower valve disc. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Example

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This application provides a plunger pump for high-viscosity lubricating oil. The plunger pump includes a cylinder assembly, a first cover 3, a valve body assembly, a plunger 5, and a drive assembly. One end of the cylinder assembly is detachably connected to the first cover 3, and the other end of the cylinder assembly is detachably connected to the valve body assembly. The plunger 5 is located inside the cylinder assembly. The drive assembly is connected to the end of the plunger 5, and the valve body assembly is detachably connected to the cylinder assembly.

[0031] It should be noted that the plunger 5 pump of this utility model is powered by a drive assembly (not shown in the figure). The drive assembly can be a motor and a crank-connecting rod mechanism. The crank-connecting rod mechanism is connected to the connection hole provided at the tail of the plunger 5. The motor is used as the power source to drive the plunger to reciprocate. The drive assembly is existing technology and will not be further described here.

[0032] Furthermore, the valve body assembly includes a second cover 7, an upper valve body 8, a middle valve body 10, a lower valve body 11, an upper valve disc 12, and a lower valve disc 13. The second cover 7 is detachably connected to the top of the upper valve body 8. The middle valve body 10 is detachably connected to the first mounting base 1. The upper valve body 8 and the lower valve body 11 are both detachably connected to the middle valve body 10. The side wall of the upper valve body 8 is provided with a discharge port, and the bottom of the lower valve body 11 is provided with a feed port. The upper valve disc 12 is located inside the upper valve body 8, and the lower valve disc 13 is located inside the lower valve body 11. The upper valve disc 12 and the lower valve disc 13 are slidably connected.

[0033] like Figure 1 As shown, the valve body assembly divides the traditional one-piece valve body into several parts, including the second cover 7, the upper valve body 8, the middle valve body 10, the lower valve body 11, the upper valve disc 12, and the lower valve disc 13. In this embodiment, the upper valve body 8, the middle valve body 10, and the lower valve body 11 are connected to each other by bolts.

[0034] It should be noted that the upper valve body 8, the middle valve body 10 and the lower valve body 11 can also be connected by threaded connection, and there is no limitation on their connection method here.

[0035] Furthermore, the cylinder assembly includes a first mounting base 1, a second mounting base 2, and a cylinder body 4. One end of the first mounting base 1 is detachably connected to the second mounting base 2, and the other end of the first mounting base 1 is detachably connected to the first cover 3. The cylinder body 4 is located in the mounting cavity formed by the connection of the first mounting base 1 and the second mounting base 2.

[0036] During installation, first prepare the first mounting base 1, the second mounting base 2, and the cylinder body 4. Tightly attach one end of the first mounting base 1 and the second mounting base 2 and detachably connect them using bolts or other fasteners to form a mounting cavity. Place the cylinder body 4 inside this mounting cavity, ensuring a tight fit between the cylinder body 4 and the first mounting base 1 and the second mounting base 2, without any shaking or misalignment, thus forming a complete cylinder assembly.

[0037] Furthermore, the bottom of the upper valve disc 12 is provided with a receiving cavity that is adapted to the top of the lower valve disc 13, and a spring is provided in the receiving cavity; a first through hole is provided at the central axis position of the upper valve disc 12, the first through hole is connected to the receiving cavity, and an adjustment component 6 is provided in the first through hole.

[0038] like Figure 1As shown, the plunger pump of this utility model relies on the opening and closing of the upper valve disc 12 and the lower valve disc 13 to realize the intake and pumping of lubricating oil.

[0039] Furthermore, the adjustment assembly 6 includes an adjustment rod, a rotating handle, and a shim. The rotating handle is connected to the top of the adjustment rod, the shim is connected to the bottom of the adjustment rod, and the shim is located inside the receiving cavity.

[0040] Furthermore, a second through hole adapted to the adjusting rod is provided at the central axis position of the second cover, and the adjusting rod is threadedly connected to the second through hole.

[0041] The bottom center axis of the second cover 7 is also provided with a countersunk hole that matches the top of the upper valve disc 12, so that the upper valve disc 12 can reciprocate.

[0042] Furthermore, the adjusting rod is slidably connected to the upper valve disc 12.

[0043] The part of the adjusting rod that contacts the first through hole is a smooth curved surface to avoid affecting the reciprocating motion of the upper valve disc 12.

[0044] Furthermore, both the inlet and outlet are equipped with check valves 9.

[0045] like Figure 1 As shown, the core of the flow regulation mechanism of this plunger pump lies in the setting of the regulating component 6. The regulating component 6 works in conjunction with the valve body assembly to achieve the control of the flow of the plunger pump.

[0046] Specifically, rotating the handle moves the adjusting rod up and down within the second through hole. As the adjusting rod moves up and down, the connected gasket also moves synchronously. This displacement of the gasket within the receiving cavity directly affects the spring within the cavity, thus changing the spring force. Since one end of the spring is connected to the upper valve disc 12 and the other end acts on the lower valve disc 13, when the spring force changes, this change is transmitted through the spring to the upper and lower valve discs 12 and 13, altering their stress state and affecting the clearance between the valve body and the valve discs. This, in turn, adjusts the suction force of the plunger pump, ultimately regulating its flow rate. This adjustment process is simple to operate and highly accurate, effectively meeting the diverse flow rate requirements of plunger pumps under different operating conditions, significantly improving the versatility and practicality of plunger pumps in the field of high-viscosity lubricating oil transportation.

[0047] The check valves 9 installed at the inlet and outlet serve to assist in regulating the flow rate. Specifically, the check valves 9 can adjust the size of the fluid channels at the inlet and outlet, thereby optimizing the suction and pumping capacity of the plunger pump. In this embodiment, the check valve 9 is similar to a faucet structure, capable of adjusting the fluid flow rate at the inlet and outlet, thus adjusting the suction of the plunger pump. The principle is that when the fluid channel at the inlet is reduced, the pressure difference between the inside and outside of the valve chamber increases during the reciprocating motion of the plunger, enhancing the vacuum suction at the inlet, which can adsorb higher viscosity lubricating oil. When the fluid channel at the outlet is reduced, its pumping capacity is stronger, enabling better pumping of high-viscosity lubricating oil.

[0048] The check valve 9 is existing technology, and the type of check valve 9 can be selected according to the actual situation. It will not be further explained here.

[0049] For the feed inlet, when the fluid passage of the check valve 9 becomes smaller, the vacuum suction at the feed inlet increases. This is because the pressure difference between the inside and outside of the valve chamber increases, allowing the plunger pump to draw in lubricating oil with higher viscosity, thereby improving the feeding efficiency. In other words, when the fluid passage decreases, the flow rate increases and the pressure decreases, resulting in stronger suction.

[0050] At the discharge port, the check valve 9 functions differently. When the fluid passage at the discharge port is reduced, the pumping capacity of the plunger pump is increased. Reducing the orifice of the discharge port increases the pumping pressure, enabling the plunger pump to better pump high-viscosity lubricating oil and ensuring that the lubricating oil is smoothly delivered to the required location. This design allows the plunger pump of this invention to effectively meet the transportation needs of high-viscosity fluids and improve the working efficiency of the plunger pump under high-viscosity conditions.

[0051] The check valves 9 at the inlet and outlet work together to optimize the performance of the plunger pump in terms of both suction and pumping capacity. By adjusting the opening of the check valves 9, users can flexibly adjust the suction and flow rate of the plunger pump according to actual working conditions, further enhancing the adaptability and practicality of the plunger pump.

[0052] The above description is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above through embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A plunger pump for use with high-viscosity lubricating oil, characterized in that, Includes a cylinder block assembly, a first cover (3), a valve body assembly, a plunger (5), and a drive assembly; wherein: The cylinder assembly is formed by sequentially and detachably connecting the first mounting base (1), the cylinder body (4), and the second mounting base (2), providing space for the movement of the plunger (5); The first cover (3) is detachably connected to one end of the first mounting base (1) to limit the plunger (5); The valve body assembly is composed of a second cover (7), an upper valve body (8), a middle valve body (10), and a lower valve body (11) that are detachably connected in sequence. It also includes an upper valve flap (12) and a lower valve flap (13), which are located in the upper valve body (8) and the lower valve body (11) respectively, and are used for the device to suck up and discharge materials. The drive assembly is connected to the end of the plunger (5) and provides power for the reciprocating motion of the plunger (5).

2. The plunger pump for high-viscosity lubricating oil according to claim 1, characterized in that, The second cover (7) is detachably connected to the top of the upper valve body (8), the middle valve body (10) is detachably connected to the first mounting base (1), the upper valve body (8) and the lower valve body (11) are both detachably connected to the middle valve body (10), and the side wall of the upper valve body (8) is provided with a discharge port, the bottom of the lower valve body (11) is provided with a feed port, the upper valve flap (12) is located inside the upper valve body (8), the lower valve flap (13) is located inside the lower valve body (11), and the upper valve flap (12) and the lower valve flap (13) are slidably connected.

3. The plunger pump for high-viscosity lubricating oil according to claim 1, characterized in that, The cylinder assembly includes a first mounting base (1), a second mounting base (2), and a cylinder body (4). One end of the first mounting base (1) is detachably connected to the second mounting base (2), and the other end of the first mounting base (1) is detachably connected to the first cover (3). The cylinder body (4) is located in the mounting cavity formed by the connection of the first mounting base and the second mounting base (2).

4. The plunger pump for high-viscosity lubricating oil according to claim 2, characterized in that, The bottom of the upper valve disc (12) is provided with a receiving cavity that is adapted to the top of the lower valve disc (13), and a spring is provided in the receiving cavity; a first through hole is provided at the central axis position of the upper valve disc (12), the first through hole is connected to the receiving cavity, and an adjustment component (6) is provided in the first through hole.

5. The plunger pump for high-viscosity lubricating oil according to claim 4, characterized in that, The adjustment assembly (6) includes an adjustment rod, a rotating handle, and a shim. The rotating handle is connected to the top of the adjustment rod, and the shim is connected to the bottom of the adjustment rod and is located inside the receiving cavity.

6. The plunger pump for high-viscosity lubricating oil according to claim 5, characterized in that, The second cover has a second through hole at the center axis position that matches the adjusting rod, and the adjusting rod is threadedly connected to the second through hole.

7. The plunger pump for high-viscosity lubricating oil according to claim 5, characterized in that, The adjusting rod is slidably connected to the upper valve disc (12).

8. The plunger pump for high-viscosity lubricating oil according to claim 2, characterized in that, Both the inlet and the outlet are equipped with check valves (9).

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