Continuous grease pressing lubrication pump and centralized lubrication system

Abstract

The utility model relates to a continuous grease pressing lubrication pump and a centralized lubrication system. Comprising an oil tank, a pump head and a spiral oil pressing plate, the spiral oil pressing plate is rotationally assembled on an output shaft and located between a plunger pair and the lower portion of the oil tank, and the spiral oil pressing plate comprises a continuous and complete spiral blade and a continuous and complete grease blocking plate arranged on the periphery of the spiral blade in a surrounding mode. When the spiral blade rotates, the lower surface of the spiral blade forms an extrusion surface for continuously and downwards extruding the lubricating grease; when the spiral oil pressing plate rotates along with the output shaft, the spiral blade continuously extrudes the lubricating grease downwards, and the grease baffle plate radially limits the part of the lubricating grease which is extruded downwards so as to prevent the lubricating grease from diffusing outwards in the radial direction. The lubricating grease extrusion device has the advantages that the lubricating grease can be continuously extruded, and most of the extruded lubricating grease is prevented from overflowing.

Description

Technical Field

[0001] This utility model relates to a continuous grease-lubricating pump and a centralized lubrication system. Background Technology

[0002] As the core component of a centralized lubrication system, the lubrication pump is the power source of the entire system. Its pump head is generally driven by a motor, a reduction mechanism, and a transmission mechanism to drive the plunger assembly to draw grease from the oil tank. The oil tank is generally located at the top of the pump head. The grease flows downward to the grease inlet of the plunger assembly, where it is drawn into the plunger assembly by the vacuum force generated by the movement of the plunger and pumped out.

[0003] However, since grease is a very viscous semi-fluid, its flow properties are extremely poor. Especially for greases with larger filler numbers or greases in low-temperature environments, they hardly flow. Therefore, external force is needed to assist in transporting the grease in the oil tank toward the grease suction port of the plunger assembly to ensure that the plunger assembly does not experience cavitation failure.

[0004] To address this, existing technologies typically employ a rotating pressure plate above the grease suction port of the plunger assembly. This plate is directly driven by the output shaft of a transmission mechanism and features an inclined pressure surface. As the pressure surface rotates towards the grease, it applies a downward driving force, encouraging the grease to move towards the suction port of the plunger assembly. However, for extremely cold regions or for very viscous greases with high viscosity, this structure is largely ineffective, and cavitation issues still occur. This is primarily because the rotating pressure plate only squeezes the grease once per revolution, and during this single squeeze, most of the grease does not move downwards but overflows outwards, resulting in the plunger assembly only drawing in a small portion of the grease, thus perpetuating the cavitation problem. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a continuous grease pump that can continuously squeeze grease and ensure that most of the squeezed grease does not overflow; the purpose of this utility model is also to provide a centralized lubrication system using the above-mentioned continuous grease pump.

[0006] The technical solution of this utility model's continuous grease lubrication pump is as follows: The continuous grease lubrication pump includes:

[0007] Oil tank, used to store lubricating grease;

[0008] The pump head, which docks with the lower part of the oil tank, includes a plunger pair and a drive mechanism for driving the plunger pair, the drive mechanism having an output shaft extending toward the lower part of the oil tank;

[0009] The spiral pressure plate is rotatably mounted on the output shaft and located between the plunger pair and the lower part of the oil tank. It includes a continuous and complete spiral blade and a continuous and complete grease baffle plate surrounding the outer periphery of the spiral blade. When the spiral blade rotates, its lower surface forms a squeezing surface that continuously squeezes the grease downward.

[0010] As the spiral pressure plate rotates with the output shaft, the spiral blades continuously squeeze the grease downwards, while the grease baffle plate radially restricts the downward-squeezed grease to prevent it from spreading outwards.

[0011] The beneficial effects of this solution are as follows: By setting a spiral pressure plate that rotates with the output shaft, compared to the traditional single-sloping rotating pressure plate, the spiral blades of this application form a continuous and complete spiral extrusion surface. Once the grease enters below the spiral blades, the extrusion surface can provide a continuous downward extrusion force on the grease, preventing the viscous grease from stagnating and failing to descend. This ensures that the grease can be continuously delivered over a large vertical distance to the grease suction port of the plunger assembly below. Simultaneously, the grease baffles on the outer perimeter are also continuous and complete. The compressible grease acts as a radial limiter, ensuring that most of the compressed grease can only move downwards and cannot escape to the sides, until the grease accumulates near the grease inlet of the plunger assembly. This ensures that the plunger assembly can always draw in grease, because the spiral pressure plate continuously supplies grease to the grease inlet of the plunger assembly. When the plunger assembly draws away grease near its grease inlet, the continuously supplied grease can replenish it in time. This is the core principle of the continuous grease compression that prevents cavitation in this application. Therefore, the spiral pressure plate of this application can continuously compress and deliver grease towards the grease inlet, replenishing the drawn-out grease in time, thus preventing cavitation in the plunger assembly and ensuring the continuous and stable operation of the lubrication pump.

[0012] Furthermore, the grease baffle is tubular. The tubular shape of the grease baffle provides better grease containment, making it more difficult for the compressed grease to escape.

[0013] Furthermore, the grease baffle is an arc-shaped plate. As a grease baffle, the arc-shaped plate still has a significant effect on restricting the compressed grease, making it suitable for use when the grease viscosity is relatively low.

[0014] Furthermore, the spiral oil press plate is equipped with an agitator rod, which is set to fit against the inner wall of the oil tank so that when it rotates with the spiral oil press plate, the grease will separate from the inner wall of the oil tank so that the grease can flow downward.

[0015] Furthermore, the pump head is equipped with at least one L-shaped cutting plate, the horizontal section of which is located above the spiral oil pressure plate. The L-shaped cutting plate is mainly designed to prevent grease from accumulating at the upper inlet of the spiral blades, and can scrape off any accumulated grease.

[0016] Furthermore, there are two or more L-shaped cutting plates, which are evenly distributed axially.

[0017] Furthermore, the oil tank includes an upper cylindrical section and a lower funnel section, and the stirring rod is correspondingly provided with a vertical section that fits into the cylindrical section and an inclined section that fits into the funnel section.

[0018] Furthermore, the upper part of the spiral blade is provided with a protrusion, the upper surface of the protrusion is horizontally set, and the protrusion is provided with a threaded hole. The lower part of the stirring rod is installed at the threaded hole by bolts.

[0019] Furthermore, an elastic rubber layer is provided at the position where the agitator contacts the inner wall of the oil tank. The elastic rubber layer ensures better scraping effect.

[0020] Furthermore, the spiral oil pressure plate has a mounting sleeve in the middle, which is used to install on the output shaft, and the spiral blade is connected between the mounting sleeve and the grease baffle.

[0021] Furthermore, the pitch of the helical blades decreases from top to bottom to gradually increase the pressure.

[0022] Furthermore, an oil distribution plate is provided between the plunger assembly and the spiral oil pressure plate to ensure that the grease is evenly distributed horizontally. The oil distribution plate has multiple perforations for the grease to pass through, and the oil distribution plate is horizontally positioned.

[0023] The technical solution of the centralized lubrication system of this utility model is as follows: The centralized lubrication system includes a distributor,

[0024] Oil pipes and a continuous grease lubrication pump, the continuous grease lubrication pump including:

[0025] Oil tank, used to store lubricating grease;

[0026] The pump head, which docks with the lower part of the oil tank, includes a plunger pair and a drive mechanism for driving the plunger pair, the drive mechanism having an output shaft extending toward the lower part of the oil tank;

[0027] The spiral pressure plate is rotatably mounted on the output shaft and located between the plunger pair and the lower part of the oil tank. It includes a continuous and complete spiral blade and a continuous and complete grease baffle plate surrounding the outer periphery of the spiral blade. When the spiral blade rotates, its lower surface forms a squeezing surface that continuously squeezes the grease downward.

[0028] As the spiral pressure plate rotates with the output shaft, the spiral blades continuously squeeze the grease downwards, while the grease baffle plate radially restricts the downward-squeezed grease to prevent it from spreading outwards.

[0029] The beneficial effects of this solution are as follows: By setting a spiral pressure plate that rotates with the output shaft, compared to the traditional single-sloping rotating pressure plate, the spiral blades of this application form a continuous and complete spiral extrusion surface. Once the grease enters below the spiral blades, the extrusion surface can provide a continuous downward extrusion force on the grease, preventing the viscous grease from stagnating and failing to descend. This ensures that the grease can be continuously delivered over a large vertical distance to the grease suction port of the plunger assembly below. Simultaneously, the grease baffles on the outer perimeter are also continuous and complete. The compressible grease acts as a radial limiter, ensuring that most of the compressed grease can only move downwards and cannot escape to the sides, until the grease accumulates near the grease inlet of the plunger assembly. This ensures that the plunger assembly can always draw in grease, because the spiral pressure plate continuously supplies grease to the grease inlet of the plunger assembly. When the plunger assembly draws away grease near its grease inlet, the continuously supplied grease can replenish it in time. This is the core principle of the continuous grease compression that prevents cavitation in this application. Therefore, the spiral pressure plate of this application can continuously compress and deliver grease towards the grease inlet, replenishing the drawn-out grease in time, thus preventing cavitation in the plunger assembly and ensuring the continuous and stable operation of the lubrication pump.

[0030] Furthermore, the grease baffle is tubular. The tubular shape of the grease baffle provides better grease containment, making it more difficult for the compressed grease to escape.

[0031] Furthermore, the grease baffle is an arc-shaped plate. As a grease baffle, the arc-shaped plate still has a significant effect on restricting the compressed grease, making it suitable for use when the grease viscosity is relatively low.

[0032] Furthermore, the spiral oil press plate is equipped with an agitator rod, which is set to fit against the inner wall of the oil tank so that when it rotates with the spiral oil press plate, the grease will separate from the inner wall of the oil tank so that the grease can flow downward.

[0033] Furthermore, the pump head is equipped with at least one L-shaped cutting plate, the horizontal section of which is located above the spiral oil pressure plate. The L-shaped cutting plate is mainly designed to prevent grease from accumulating at the upper inlet of the spiral blades, and can scrape off any accumulated grease.

[0034] Furthermore, there are two or more L-shaped cutting plates, which are evenly distributed axially.

[0035] Furthermore, the oil tank includes an upper cylindrical section and a lower funnel section, and the stirring rod is correspondingly provided with a vertical section that fits into the cylindrical section and an inclined section that fits into the funnel section.

[0036] Furthermore, the upper part of the spiral blade is provided with a protrusion, the upper surface of the protrusion is horizontally set, and the protrusion is provided with a threaded hole. The lower part of the stirring rod is installed at the threaded hole by bolts.

[0037] Furthermore, an elastic rubber layer is provided at the position where the agitator contacts the inner wall of the oil tank. The elastic rubber layer ensures better scraping effect.

[0038] Furthermore, the spiral oil pressure plate has a mounting sleeve in the middle, which is used to install on the output shaft, and the spiral blade is connected between the mounting sleeve and the grease baffle.

[0039] Furthermore, the pitch of the helical blades decreases from top to bottom to gradually increase the pressure.

[0040] Furthermore, an oil distribution plate is provided between the plunger assembly and the spiral oil pressure plate to ensure that the grease is evenly distributed horizontally. The oil distribution plate has multiple perforations for the grease to pass through, and the oil distribution plate is horizontally positioned. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the internal structure of a specific embodiment of the continuous grease lubrication pump of this utility model;

[0042] Figure 2 A three-dimensional structural diagram of the pump head and its upper part;

[0043] Figure 3 A three-dimensional view of the structure of the upper part of the pump head, the spiral oil pressure plate, the stirring rod, and the L-shaped cutting plate working together.

[0044] Figure 4 for Figure 1 A three-dimensional view of the spiral oil pressure plate in the middle;

[0045] Figure 5 A perspective view of a spiral oil press plate in another embodiment of a continuous grease lubrication pump;

[0046] Figure 6 for Figure 5 Top view;

[0047] Figure 7 for Figure 6 Sectional view at point AA;

[0048] In the diagram: 1-oil tank, 11-cylindrical section, 12-funnel section, 2-pump head, 3-distribution plate, 4-plunger pair, 5-output shaft, 6-spiral pressure plate, 61-spiral blade, 611-extrusion surface, 612-protrusion, 613-threaded hole, 62-grease baffle, 63-mounting sleeve, 7-stirring rod, 71-vertical section, 72-inclined section, 8-L-shaped cutting plate. Detailed Implementation

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0051] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0053] A specific embodiment of the continuous grease lubrication pump of this utility model: as follows Figure 1 As shown, the continuous grease lubrication pump includes an oil tank 1, a pump head 2, a geared motor, an eccentric wheel transmission mechanism, a plunger assembly 4, a distribution plate 3, a spiral pressure plate 6, a motor, a transmission mechanism, a stirring rod 7, and an L-shaped cutting plate 8. The lubrication pump in this embodiment is a multi-point pump. The motor, geared mechanism, and transmission mechanism sequentially drive multiple circumferentially distributed plunger assemblies 4 to pump the grease from the oil tank 1. The oil tank 1, pump head 2, geared motor, eccentric wheel transmission mechanism, plunger assembly 4, and distribution plate 3 are existing technologies and will not be described further here.

[0054] Specifically, such as Figure 1As shown, oil tank 1 is used to store lubricating grease; the pump head is connected to the lower part of the oil tank and includes a plunger pair and a drive mechanism for driving the plunger pair. The drive mechanism includes a motor, a reduction mechanism, a transmission mechanism, etc.; the pump head 2 includes a reduction motor, an eccentric wheel transmission mechanism, and a plunger pair 4 connected in sequence. The upper part of the plunger pair 4 is provided with an oil distribution plate 3. The transmission mechanism has an output shaft 5, which extends from bottom to top into the lower part of the oil tank 1 along the axis of the oil tank 1. The oil tank includes an upper cylindrical section and a lower funnel section. The stirring rod is correspondingly provided with a vertical section that fits into the cylindrical section and an inclined section that fits into the funnel section. An oil distribution plate is provided between the plunger pair and the spiral pressure plate to make the lubricating grease horizontally and evenly distributed. The oil distribution plate has multiple perforations for the lubricating grease to pass through, and the oil distribution plate is horizontally arranged.

[0055] like Figure 1-4 As shown, the spiral pressure plate 6 is rotatably mounted on the output shaft 5 and located between the plunger assembly 4 and the lower part of the oil tank 1. It includes a continuous spiral blade 61 and a continuous grease baffle 62 surrounding the spiral blade 61. When the spiral blade 61 rotates, its lower surface forms a compression surface 611 that continuously squeezes the grease downwards. The grease baffle 62 is tubular. The tubular grease baffle 62 has a better effect of binding the grease, making it more difficult for the squeezed and conveyed grease to escape.

[0056] As the spiral pressure plate 6 rotates with the output shaft 5, the spiral blades 61 continuously squeeze the grease downwards, while the grease baffle 62 radially restricts the downwardly squeezed grease to prevent radial outward diffusion. The spiral pressure plate 6 has a mounting sleeve 63 in its middle section, which is used to mount the output shaft 5. The spiral blades 61 connect the mounting sleeve 63 and the grease baffle 62.

[0057] A stirring rod 7 is provided on the spiral pressure plate 6. The stirring rod 7 is set against the inner wall of the oil tank 1 so that when it rotates with the spiral pressure plate 6, it can separate the grease from the inner wall of the oil tank 1 so that the grease can flow downward. At least one L-shaped cutting plate 8 is provided on the pump head 2, with the horizontal section of the L-shaped cutting plate 8 located above the spiral pressure plate 6. The L-shaped cutting plate 8 is mainly designed to prevent grease from accumulating at the upper inlet of the spiral blade 61, and can scrape off the accumulated grease. There are two or more L-shaped cutting plates 8, evenly distributed axially. The upper part of the spiral blade 61 has a protrusion 612, the upper surface of which is horizontally positioned. The protrusion 612 has a threaded hole 613, and the lower part of the stirring rod 7 is bolted to the threaded hole 613. An elastic rubber layer is provided at the position where the stirring rod 7 contacts the inner wall of the oil tank 1. The elastic rubber layer ensures better scraping effect.

[0058] This application, by setting a spiral pressure plate 6 to rotate with the output shaft 5, compared to the traditional single-sloping rotating pressure plate, features a continuous and complete spiral extrusion surface 611 on the spiral blade 61. Once the grease enters below the spiral blade 61, the extrusion surface 611 provides a continuous downward extrusion force to the grease, preventing the viscous grease from stagnating and failing to descend. This ensures that the grease can be continuously delivered over a large vertical distance to the grease inlet of the plunger assembly 4 below. Simultaneously, the grease baffle 62 on the periphery is also continuous and complete. The compressible grease acts as a radial limiter, ensuring that most of the compressed grease can only move downwards and cannot escape to the sides, until the grease accumulates near the suction port of the plunger assembly 4. This ensures that the plunger assembly 4 can always draw in grease, because the spiral pressure plate 6 continuously supplies grease to the suction port of the plunger assembly 4. When the plunger assembly 4 draws away the grease near its suction port, the continuously supplied grease can replenish it in time. This is the core principle of the continuous grease compression that prevents cavitation in this application. Therefore, the spiral pressure plate 6 of this application can continuously compress and deliver grease towards the suction port, replenishing the drawn-out grease in time, thus preventing cavitation in the plunger assembly 4 and ensuring the continuous and stable operation of the lubrication pump.

[0059] In other embodiments, such as Figure 5-7 As shown, the grease baffle 62 is an arc-shaped plate. As a grease baffle 62, the arc-shaped plate still has a significant effect on restricting the compressed grease, making it suitable for use when the grease viscosity is relatively low.

[0060] In other embodiments, the pitch of the helical blades can decrease from top to bottom to gradually increase pressure. Since the flow resistance of the grease increases towards the bottom, especially due to the confined space within the pump head, changing the pitch allows the helical delivery blades to exert a greater pushing force on the grease, thus overcoming the aforementioned resistance.

[0061] The centralized lubrication system of this utility model includes a continuous grease-pressing pump as a power source and grease supply source, a distributor for distributing grease, as well as pipelines, wiring harnesses, pipe fittings, and wire fittings. The structure of the continuous grease-pressing pump is the same as that in the various embodiments described above, and will not be repeated here.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A continuous grease-lubricating pump, comprising: Oil tank, used to store lubricating grease; The pump head, which docks with the lower part of the oil tank, includes a plunger pair and a drive mechanism for driving the plunger pair, the drive mechanism having an output shaft extending toward the lower part of the oil tank; Its characteristic is that it further includes: The spiral pressure plate is rotatably mounted on the output shaft and located between the plunger pair and the lower part of the oil tank. It includes a continuous and complete spiral blade and a continuous and complete grease baffle plate surrounding the outer periphery of the spiral blade. When the spiral blade rotates, its lower surface forms a squeezing surface that continuously squeezes the grease downward. As the spiral pressure plate rotates with the output shaft, the spiral blades continuously squeeze the grease downwards, while the grease baffle plate radially restricts the downward-squeezed grease to prevent it from spreading outwards.

2. The continuous grease lubrication pump according to claim 1, characterized in that, The grease shield is tubular.

3. The continuous grease-lubricating pump according to claim 1, characterized in that, The grease shield is an arc-shaped plate.

4. The continuous grease-lubricated pump according to any one of claims 1-3, characterized in that, The spiral oil press plate is equipped with a stirring rod, which is set to fit against the inner wall of the oil tank so that when it rotates with the spiral oil press plate, the grease will separate from the inner wall of the oil tank so that the grease can flow downward.

5. The continuous grease-lubricated pump according to any one of claims 1-3, characterized in that, The pump head is equipped with at least one L-shaped cutting plate, and the horizontal section of the L-shaped cutting plate is located above the spiral oil pressure plate.

6. The continuous grease-lubricated pump according to claim 5, characterized in that, There are two or more L-shaped cutting plates, which are evenly distributed along the axis.

7. The continuous grease-lubricated pump according to claim 4, characterized in that, The oil tank consists of an upper cylindrical section and a lower funnel section. The stirring rod is provided with a vertical section that fits into the cylindrical section and an inclined section that fits into the funnel section.

8. The continuous grease-lubricating pump according to claim 4, characterized in that, The upper part of the spiral blade is provided with a protrusion, the upper surface of the protrusion is horizontally set, and the protrusion is provided with a threaded hole. The lower part of the stirring rod is installed at the threaded hole by bolts.

9. The continuous grease-lubricating pump according to claim 4, characterized in that, An elastic rubber layer is provided at the position where the stirring rod contacts the inner wall of the oil tank.

10. The continuous grease-lubricating pump according to claim 1, characterized in that, The spiral oil pressure plate has a mounting sleeve in the middle, which is used to install on the output shaft, and the spiral blades are connected between the mounting sleeve and the grease baffle.

11. The continuous grease-lubricating pump according to claim 1, characterized in that, The pitch of the helical blades decreases from top to bottom to gradually increase the pressure.

12. The continuous grease-lubricating pump according to claim 1, characterized in that, A distribution plate is provided between the plunger assembly and the spiral oil pressure plate to ensure that the grease is evenly distributed horizontally. The distribution plate has multiple perforations for the grease to pass through, and the distribution plate is set horizontally.

13. A centralized lubrication system, including: Distributor; oil pipe; The feature is that it further includes a continuous grease-lubricating pump as described in any one of claims 1-12.

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