A universal plunger push block of a multi-cylinder electric grease gun and the electric grease gun

Abstract

The utility model discloses a kind of general type plunger push block and electric butter machine of multi-cylinder electric butter machine, it is related to butter filling equipment technical field.The utility model includes push block main part, the push block main part is cylindrical structure, annular rolling groove is opened in its lateral wall, upper limit ring groove is opened in the top groove wall of annular rolling groove, lower limit ring groove is opened in bottom groove wall, the drive end of the oil pressing rod of electric butter machine is connected in annular rolling groove, and its drive end top is fixed with the upper limit piece of the upper limit ring groove rolling connection, bottom is fixed with the lower limit piece of the lower limit ring groove rolling connection.The utility model is through being arranged annular rolling groove that pass through circumferentially, can be used for any number of oil pressing rod electric butter machine, while by setting upper limit ring groove and lower limit ring groove, the oil pressing rod and push synchronous operation can be made to realize oil extraction and reset, improve work efficiency, and guarantee that oil pressing rod can smoothly and continuously extrude oil.

Description

Technical Field

[0001] This utility model relates to the technical field of grease dispensing equipment, and more specifically to a universal plunger pusher block and electric grease dispenser for a multi-cylinder electric grease dispenser. Background Technology

[0002] A grease press is a machine specifically designed to inject grease into lubrication stations by increasing pressure. Traditional manual grease presses require manual effort to force the grease out of the reservoir and apply it to the machine parts that need lubrication. This method is labor-intensive, inefficient, and provides insufficient pressure to meet production needs.

[0003] Electric grease dispensers use electricity to pressurize and dispense industrial lubricating oil or grease in a metered manner. Existing multi-cylinder electric grease dispensers generally use an eccentric mechanism to drive a pusher block to rotate eccentrically, sequentially pushing multiple plungers to compress grease. For example, patent document CN 2132611 U discloses a portable multi-pump electric grease dispenser where the pusher block is covered by a casing, and a movable rod passes through the side wall of the casing. The pusher block abuts against the end of the movable rod and pushes the rod away. The casing has evenly distributed elongated holes on its circumferential side wall. However, the design of these elongated holes limits its use to grease dispensers with the same number of plunger cylinders as the number of holes, and it is not suitable for electric grease dispensers with other numbers of plunger cylinders. Furthermore, in existing electric grease dispensers, the plunger rod returns to its original position after compressing grease via a spring. The spring has a long recovery time, low efficiency, and is prone to fatigue damage after prolonged use.

[0004] Therefore, how to provide a universal plunger pusher and electric grease machine for multi-cylinder electric grease machines that can be used with electric grease machines of any number of cylinders, improve grease injection efficiency, and ensure stable and continuous grease supply is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention aims to provide a multi-cylinder universal electric grease press to at least partially solve the technical problem that the plunger pusher of the grease press can only be used in grease presses with a specific number of cylinders and cannot be universally used.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A universal plunger pusher for a multi-cylinder electric grease press includes: a pusher body, the pusher body having a cylindrical structure, an annular groove on its side wall, an upper limit annular groove on the top wall of the annular groove, and a lower limit annular groove on the bottom wall of the annular groove; the driving end of the oil press rod of the electric grease press is rotatably connected to the annular groove, and an upper limit member is fixed at the top of the driving end and rotatably connected to the upper limit annular groove, and a lower limit member is fixed at the bottom and rotatably connected to the lower limit annular groove.

[0008] The beneficial effects that this utility model can achieve are as follows: by setting a circumferentially continuous annular groove, it can be used in an electric grease machine with any number of oil pressing rods. At the same time, by setting an upper limit annular groove and a lower limit annular groove, the oil pressing rod and the push can run synchronously to achieve oil squeezing and resetting, thereby improving work efficiency and ensuring that the oil pressing rod can squeeze out oil smoothly and continuously.

[0009] Preferably, the push block body includes a cylindrical pusher and an upper limit plate and a lower limit plate, both with diameters larger than the pusher. The upper limit plate and the lower limit plate are respectively installed at the upper and lower ends of the pusher and together with the push block body, they define the annular groove. The upper limit annular groove is formed at the bottom of the upper limit plate, and the lower limit annular groove is formed at the top of the lower limit plate.

[0010] Preferably, the inner ring surface of the upper limit ring is a first inclined ring surface with its lower end tilted away from the pushing member, and the inner ring surface of the lower limit ring is a second inclined ring surface with its upper end tilted away from the pushing member.

[0011] Preferably, both the upper limit member and the lower limit member are semi-circular ring structures, and the upper limit member and the lower limit member can be spliced ​​together to form a complete circular ring structure.

[0012] An electric grease machine, comprising:

[0013] The housing is installed at the top center of the bottom of the oil drum and has a push block movable cavity. A plurality of oil pressure chambers are circumferentially spaced on the outer periphery of the push block movable cavity. The housing has an oil inlet and an oil outlet arranged at intervals along the direction away from the push block movable cavity and communicating with the oil pressure chamber for each oil inlet chamber.

[0014] The drive assembly includes an eccentric drive mechanism and a universal plunger pusher for a multi-cylinder electric grease machine as described above. The plunger pusher rotates eccentrically within the pusher's movable cavity, and its bottom is connected to the output end of the eccentric drive mechanism.

[0015] The oil press rods correspond one-to-one with the oil press chambers, and the driving end of each oil press rod is rolledly connected to the annular groove. The execution end slides through the side wall of the push block movable cavity and extends into the corresponding oil press chamber to squeeze the grease that enters the oil press chamber from the oil injection port through the oil discharge port.

[0016] The beneficial effects that this utility model can achieve are: the grease press of this utility model can adaptively adjust the number of oil pressing rods and ensure stable operation of the system.

[0017] Preferably, a stirring assembly for stirring butter is also provided, the stirring assembly including a stirring shaft and a stirring paddle, the stirring shaft being coaxially fixed to the top of the plunger push block, and the stirring paddle being fixed to the stirring shaft.

[0018] Preferably, each of the oil pressure chambers is fixed with an oil guide pipe, each of the oil guide pipes is coaxially arranged with the corresponding oil pressure rod and fixed in the oil pressure chamber, and each of the oil guide pipes is provided with an oil inlet hole communicating with the oil injection port and an oil outlet hole communicating with the oil discharge port. The actuating end of the oil pressure rod is slidably connected in the oil guide pipe to squeeze the oil entering the inner cavity of the oil guide pipe from the oil inlet hole to the oil outlet hole.

[0019] Preferably, an elastic sealing plug is also provided. The elastic sealing plug includes a return spring and a plug body. The return spring is arranged along the axial direction of the oil pressure rod and one end of it is fixed to the inner wall of the oil pressure chamber away from the push block movable chamber. The plug body is fixed to the other end of the return spring and can abut against the oil outlet of the oil guide pipe to open and close the channel between the oil outlet and the oil drain port.

[0020] Preferably, an annular oil supply pipe is also provided, and an oil outlet pipe connector is installed at the oil outlet of any of the oil pressure chambers. The annular oil supply pipe is fixed to the bottom of the housing and has an oil supply pipe inlet connected to each of the oil outlets, and an oil supply pipe outlet connected to each of the oil outlet pipe connectors.

[0021] Preferably, a filter screen is installed inside the oil inlet.

[0022] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a universal plunger pusher for a multi-cylinder electric grease press and an electric grease press, which has the following beneficial effects:

[0023] 1. By setting a circumferentially continuous annular groove, it can be used in grease machines with any number of pressure rods, and can limit the pressure rods along the axial direction of the push block, so that they can squeeze out oil smoothly and continuously, preventing the push block from separating from the pressure rods and thus effectively driving the pressure rods to squeeze out grease.

[0024] 2. Through the cooperation of the upper limit ring groove and the lower limit ring groove with the upper limit component and the lower limit component, a stable connection with the oil pressure rod can be maintained. It can both push the oil pressure rod to squeeze out grease and drive the oil pressure rod to reset. There is no need to set an additional elastic reset component, which avoids the problems of easy fatigue failure of elastic reset component, long reset time, inability of plunger push block to rotate at high speed, and low working efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A three-dimensional structural diagram of a universal plunger pusher for a multi-cylinder electric grease press provided by this utility model.

[0027] Figure 2 A cross-sectional schematic diagram of a universal plunger pusher for a multi-cylinder electric grease machine provided by this utility model.

[0028] Figure 3 This is a three-dimensional structural diagram of an electric grease machine provided by this utility model.

[0029] Figure 4 This is a top view of an electric grease machine provided by this utility model.

[0030] Figure 5 A bottom view of the structure of an electric grease press provided by this utility model.

[0031] Figure 6 This utility model provides an inverted three-dimensional structural diagram of an electric grease press.

[0032] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure of section AA.

[0033] Figure 8 for Figure 7 Enlarged structural diagram of section B.

[0034] Figure 9 An exploded structural diagram of the oil pressure rod and oil guide pipe provided by this utility model.

[0035] Reference numerals: 1. Housing; 11. Push block movable chamber; 12. Oil pressure chamber; 13. Oil inlet; 14. Oil outlet; 2. Drive assembly; 21. Eccentric drive mechanism; 22. Plunger push block; 221. Pushing component; 222. Upper limit plate; 223. Lower limit plate; 224. Annular groove; 2221. Upper limit annular groove; 2231. Lower limit annular groove; 3. Oil pressure rod; 31. Upper limit component; 32. Lower limit component; 4. Stirring assembly; 41. Stirring shaft; 42. Stirring paddle; 5. Oil guide pipe; 51. Oil inlet hole; 52. Oil outlet hole; 6. Elastic sealing plug; 61. Return spring; 62. Plug body; 7. Annular oil supply pipe; 8. Oil outlet pipe connector; 9. Filter screen; 10. Pressure regulating valve. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Example 1:

[0040] Please see Figure 1 , Figure 2 , Figure 8 and Figure 9This utility model discloses a universal plunger pusher block for a multi-cylinder electric grease press, comprising: a pusher block body, the pusher block body having a cylindrical structure, an annular groove 224 formed on its side wall, an upper limit annular groove 2221 formed on the top wall of the annular groove 224, and a lower limit annular groove 2231 formed on the bottom wall of the annular groove 224, the driving end of the electric grease press rod 3 being rolledly connected in the annular groove 224, and an upper limit member 31 rolledly connected to the upper limit annular groove 2221 fixed at the top of the driving end, and a lower limit member 32 rolledly connected to the lower limit annular groove 2231 fixed at the bottom. In this embodiment, the annular groove 224 on the plunger pusher block 22 can meet the needs of different numbers of pressure rods 3, and while the plunger pusher block 22 rotates to push the pressure rod 3 to squeeze grease, the upper and lower limit annular grooves can limit the pressure rod 3, thereby ensuring the relative stability of the pusher block and the pressure rod 3, and driving the pressure rod to reciprocate to squeeze grease.

[0041] Specifically, the push block body includes a cylindrical pusher 221 and an upper limit plate 222 and a lower limit plate 223, both with diameters larger than the pusher 221. The upper limit plate 222 and the lower limit plate 223 are detachably connected to the upper and lower ends of the pusher 221, respectively, and together with the push block body, they define an annular groove 224. The upper limit annular groove 2221 is formed at the bottom of the upper limit plate 222, and the lower limit annular groove 2231 is formed at the top of the lower limit plate. The detachable connection between the various structures facilitates disassembly and assembly, and makes maintenance convenient.

[0042] Specifically, the outer ring surface of the upper limit ring groove 2221 is a first inclined ring surface that is inclined at the lower end in the direction away from the pusher 221, and the outer ring surface of the lower limit ring groove 2231 is a second inclined ring surface that is inclined at the upper end in the direction away from the pusher 221, thereby reducing the friction between the limiter and the limit ring groove.

[0043] Specifically, both the upper limit component 31 and the lower limit component 32 are semi-circular ring structures, and the upper limit component 31 and the lower limit component 32 can be spliced, fixed, or integrally connected to form a complete circular ring structure, which is convenient for processing and easy to install. This eliminates the need to calibrate the position of the upper limit component 31 and the lower limit component 32 when installing the oil pressure rod 3, and effectively prevents the oil pressure rod 3 from detaching from the plunger push block 22.

[0044] Example 2:

[0045] See Figures 3-9 This utility model discloses an electric grease maker, comprising:

[0046] The housing 1 has a pusher block movable cavity 11 at its top center. Multiple oil pressing chambers 21 are circumferentially spaced around the outer periphery of the pusher block movable cavity 11. For each oil pressing chamber 12, the housing 1 has an oil inlet 13 and an oil outlet 14, spaced apart and communicating with the oil pressing chamber 12 in a direction away from the pusher block movable cavity 11. An oil drum (not shown in the figure) is mounted on the top of the housing 1 to hold grease. The bottom of the oil drum is open, and the opening covers the outer periphery of the multiple oil inlets 13. The oil drum and the housing 1 are sealed together.

[0047] Drive assembly 2 includes an eccentric drive mechanism 21 and a universal plunger pusher block 22 for a multi-cylinder electric grease machine according to embodiment 1. The plunger pusher block 22 rotates eccentrically in the pusher block movable cavity 11, and its bottom is connected to the output end of the eccentric drive mechanism 21.

[0048] The oil press rod 3 has multiple oil press rods 3 corresponding to multiple oil press chambers 12. The driving end of each oil press rod 3 is rolledly connected in the annular groove 224, and the execution end slides through the side wall of the push block movable cavity 11 to extend into the corresponding oil press chamber 12 so as to squeeze the grease that enters the oil press chamber 12 from the oil injection port 13 through the oil discharge port 14.

[0049] Specifically, the oil drum is also equipped with a stirring assembly 4 for stirring the butter. The stirring assembly 4 includes a stirring shaft 41 and a stirring paddle 42. The stirring shaft 41 is coaxially fixed to the top of the pusher block body, and the stirring paddle 42 is fixed on the stirring shaft 41. While the plunger pusher block 22 rotates to extrude butter, the stirring assembly 4 can stir the butter in the oil drum, improve the flowability and uniformity of the butter, remove internal gas, avoid deviations in the amount of butter injected due to gas interference, and meet the requirements for more precise quantitative use.

[0050] Specifically, each oil pressure chamber 12 is fixed with an oil guide pipe 5. Each oil guide pipe 5 is coaxially arranged with the corresponding oil pressure rod 3 and fixed in the oil pressure chamber 12. Each oil guide pipe 5 is provided with an oil inlet hole 51 communicating with the oil injection port 13 and an oil outlet hole 52 communicating with the oil discharge port 14. The actuating end of the oil pressure rod 3 is sealed and slidably connected in the oil guide pipe 5 to squeeze the oil entering the inner cavity of the oil guide pipe 5 from the oil inlet hole 51 to the oil outlet hole 52 for application.

[0051] Specifically, an elastic sealing plug 6 is also provided. The elastic sealing plug 6 includes a return spring 61 and a plug body 62. The return spring 61 is arranged along the axial direction of the oil pressure rod 3, and one end of it is fixed to the inner wall of the oil pressure chamber 21 away from the push block movable chamber. The plug body 62 is fixed to the other end of the return spring 61 and can abut against the oil outlet 52 of the oil guide pipe 5 to open and close the channel between the oil outlet 52 and the oil drain port 23. When the oil pressure rod 3 pushes the oil outward, the return spring 61 is compressed, and the plug body 62 moves away from the oil outlet 52, allowing the grease to enter the oil drain port 23 through the oil outlet. Conversely, when the oil pressure rod 3 returns to its original position, the return spring 61 drives the plug body 62 to re-seal the oil outlet 52, preventing the grease from flowing back into the oil guide pipe 5.

[0052] Specifically, an annular oil supply pipe 7 is also provided, and an oil outlet pipe connector 8 is installed at the oil outlet 23 of any oil pressure chamber 21. The annular oil supply pipe 7 is fixed to the bottom of the housing 1, and each oil outlet 23 has an oil supply pipe inlet connected to it. The corresponding oil outlet pipe connector 8 has an oil supply pipe outlet 28 connected to it. Through the annular oil supply pipe 7, the grease in all oil pressure chambers 21 can be transported to the oil outlet pipe connector 8 at the same time, realizing a continuous and stable large-capacity oil supply.

[0053] Specifically, a pressure gauge and a pressure regulating valve 10 are installed at the oil outlet of the oil pipeline to adjust the oil outlet pressure according to process requirements.

[0054] Specifically, a filter screen 9 is installed inside the oil inlet 13 to filter out impurities and prevent clogging of the oil outlet channel.

[0055] Working principle: After being stirred by the stirring component 4, the grease injected into the oil drum enters the oil pressure chamber 21 through the oil inlet 13. As the amount of oil increases, the grease enters the inner cavity of the oil guide pipe 5 through the oil inlet 51. Under the pushing force of the pusher block 22, the oil pressure rod 3 squeezes the grease in the oil guide pipe 5 to the oil outlet 52, and then enters the annular oil supply pipe 7 through the oil outlet 52 for discharge, thus achieving pressurized output. As the plunger pusher block 22 continues to rotate, it drives the oil pressure rod 3 to slide back to its original position, and the grease enters the inner cavity of the oil guide pipe 5 again through the oil inlet 51. This process is repeated to achieve stable output of grease.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-cylinder electric grease gun universal type plunger pusher, characterized by, include: The push block body is cylindrical in shape, with an annular groove (224) on its side wall. An upper limit annular groove (2221) is provided on the top wall of the annular groove (224), and a lower limit annular groove (2231) is provided on the bottom wall. The driving end of the oil press rod (3) of the electric grease press is tumbled in the annular groove (224), and an upper limit member (31) is fixed at the top of the driving end and tumbled in the upper limit annular groove (2221), and a lower limit member (32) is fixed at the bottom and tumbled in the lower limit annular groove (2231).

2. A multi-cylinder electric grease gun universal plunger block according to claim 1, wherein, The push block body includes a cylindrical pusher (221) and an upper limit plate (222) and a lower limit plate (223) with diameters larger than the pusher (221). The upper limit plate (222) and the lower limit plate (223) are detachably connected to the upper and lower ends of the pusher (221) and together with the push block body, they define the annular groove (224). The upper limit annular groove (2221) is opened at the bottom of the upper limit plate (222), and the lower limit annular groove (2231) is opened at the top of the lower limit plate.

3. A multi-cylinder electric oiler universal plunger push block according to claim 2, characterized in that, The outer ring surface of the upper limit annular groove (2221) is a first inclined annular surface that is inclined at the lower end in a direction away from the pusher (221), and the outer ring surface of the lower limit annular groove (2231) is a second inclined annular surface that is inclined at the upper end in a direction away from the pusher (221).

4. A multi-cylinder electric oil pump general-purpose plunger block according to any one of claims 1 to 3, characterized in that, Both the upper limit member (31) and the lower limit member (32) are semi-circular ring structures, and the upper limit member (31) and the lower limit member (32) can be spliced ​​together to form a complete circular ring structure.

5. An electric butter churn, characterized in that, include: The housing (1) has a push block movable cavity (11) at the top center, and a plurality of oil pressure chambers (12) are circumferentially spaced on the outer periphery of the push block movable cavity (11); the housing (1) has an oil inlet (13) and an oil outlet (14) arranged at intervals along the direction away from the push block movable cavity (11) and communicating with the oil pressure chamber (12) for each of the oil pressure chambers (12); The drive assembly (2) includes an eccentric drive mechanism (21) and a universal plunger pusher block (22) for a multi-cylinder electric grease machine according to any one of claims 1-4. The plunger pusher block (22) rotates eccentrically in the pusher block movable cavity (11), and its bottom is connected to the output end of the eccentric drive mechanism (21). The oil press rod (3) is one-to-one with the oil press chamber (12), and the driving end of each oil press rod (3) is rolledly connected in the annular groove (224), and the execution end slides through the side wall of the push block movable cavity (11) to extend into the corresponding oil press chamber (12) so as to squeeze the grease that enters the oil press chamber (12) from the oil injection port (13) through the oil discharge port (14).

6. An electric grease gun according to claim 5 wherein, It is also provided with a stirring assembly (4) for stirring butter. The stirring assembly (4) includes a stirring shaft (41) and a stirring paddle (42). The stirring shaft (41) is coaxially fixed to the top of the plunger push block (22), and the stirring paddle (42) is fixed on the stirring shaft (41).

7. An electric grease gun as defined in claim 5 wherein, Each of the oil pressure chambers (12) is fixed with an oil guide tube (5). Each of the oil guide tubes (5) is coaxially arranged with the corresponding oil pressure rod (3) and fixed in the oil pressure chamber (12). Each of the oil guide tubes (5) is provided with an oil inlet hole (51) communicating with the oil injection port (13) and an oil outlet hole (52) communicating with the oil discharge port (14). The actuating end of the oil pressure rod (3) is slidably connected in the oil guide tube (5) to squeeze the grease entering the inner cavity of the oil guide tube (5) from the oil inlet hole (51) to the oil outlet hole (52).

8. An electric grease gun according to claim 7, wherein An elastic sealing plug (6) is also provided. The elastic sealing plug (6) includes a return spring (61) and a plug body (62). The return spring (61) is arranged along the axial direction of the oil pressure rod (3) and one end of it is fixed to the inner wall of the oil pressure chamber (12) away from the push block movable chamber (11). The plug body (62) is fixed to the other end of the return spring (61) and can abut against the oil outlet (52) of the oil guide pipe (5) to open and close the channel between the oil outlet (52) and the oil drain port (14).

9. An electric grease gun according to any one of claims 5 to 8, wherein, An annular oil supply pipe (7) is also provided. An oil outlet pipe connector (8) is installed at the oil outlet (14) of any of the oil pressure chambers (12). The annular oil supply pipe (7) is fixed to the bottom of the housing (1) and has an oil supply pipe inlet connected to each of the oil outlets (14). An oil supply pipe outlet connected to the oil outlet pipe connector (8) is also provided.

10. An electric butter maker as claimed in any of claims 5 to 8, wherein the motor is mounted on the base. A filter screen (9) is installed inside the oil inlet (13).

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