Thin oil pump with built-in motor

Abstract

The thin oil pump with the built-in motor comprises a pump body and a base, the base is of a hollow structure with an opening in the upper end, the bottom end of the pump body is fixed to the upper opening of the base, a driving motor is arranged in the base, and a rotating shaft of the driving motor is connected with the bottom end of the pump body and drives the pump body to work. According to the thin oil pump, the pump body and the driving motor are both installed on the base, the pump body is driven by the driving motor to work, and therefore when the thin oil pump is installed, only the base needs to be installed and fixed to the corresponding working position, and the installation steps of an existing thin oil pump are simplified.

Description

Technical Field

[0001] The utility model relates to the field of lubricating pumps, and particularly relates to a thin oil pump with a built-in motor. Background Art

[0002] A thin oil pump is a hydraulic oil pump for thin oil, which is used for pumping, transporting and distributing oil. It is divided into vane pumps, plunger pumps and gear pumps. The thin oil pump usually uses a motor to drive the pump body to rotate, so as to realize the suction and discharge of lubricating oil. During the installation and use of the thin oil pump, it is necessary to install and fix the pump body and the driving motor separately, and then connect the driving motor to the pump body. The installation operation is relatively cumbersome, resulting in inconvenience during the installation of the thin oil pump. Content of the Utility Model

[0003] The purpose of the utility model is to provide a thin oil pump with a built-in motor. The thin oil pump installs both the pump body and the driving motor on the base, and the driving motor drives the pump body to work. Therefore, when installing the utility model, only the base needs to be installed and fixed to the corresponding working position, which simplifies the installation steps of the existing thin oil pump.

[0004] The technical solution adopted by the utility model to solve the above problems is:

[0005] A thin oil pump with a built-in motor includes a pump body and a base. The base is a hollow structure with an open upper end. The bottom end of the pump body is fixed at the upper opening of the base. A driving motor is arranged in the base, and the rotating shaft of the driving motor is connected to the bottom end of the pump body and drives the pump body to work.

[0006] In the above technical solution, preferably, the pump body includes a top cover and a main cavity. The main cavity is a hollow structure with open upper and lower ends. The top cover is detachably and sealingly fixed at the upper opening of the main cavity. An oil inlet hole and multiple groups of oil outlet holes are arranged on the side wall of the main cavity. A main shaft is vertically arranged in the main cavity. The main shaft is connected to the driving motor and is driven by the driving motor to rotate. The upper end of the main shaft extends into the interior of the top cover. A follow-up disk with an up-and-down undulating shape is arranged at the center of the top cover. The follow-up disk is fixed at the upper end of the main shaft. A plurality of plunger rods are equidistantly arranged around the follow-up disk. An adjusting bolt for adjusting the movement distance of the plunger rod is arranged at the upper end of the plunger rod. The rotation of the follow-up disk drives the plunger rod to do up-and-down reciprocating motion.

[0007] In the above technical solution, preferably, the base is provided with a lower opening, and a bottom cover is arranged in the lower opening of the base. The bottom cover is fixedly connected to the base by screws.

[0008] In the above technical solution, preferably, the upper opening of the base is circular, and a plurality of first through holes are opened in a circular shape at equal intervals at the upper opening of the base, and a plurality of thread grooves are opened in a circular shape at equal intervals at the bottom end of the main cavity, and the positions of the thread grooves correspond to the positions of some of the first through holes.

[0009] In the above technical solution, preferably, the lower end of the main shaft is sealed and rotatably arranged in the lower opening of the main cavity, a transmission rod with a slot is coaxially arranged at the lower end of the main shaft, and an insertion rod adapted to be inserted into the slot is opened on the rotating shaft of the driving motor.

[0010] In the above technical solution, preferably, a fixing portion is integrally formed on the rear side of the base, and a plurality of second through holes are formed on the fixing portion.

[0011] In the above technical solution, preferably, a mounting position for mounting the control panel is provided on the front side surface of the base, and a third through hole is provided in the mounting position.

[0012] In the above technical solution, preferably, two first grooves are opened at the bottom end of the base, and the first grooves are symmetrically arranged on the base, and two second grooves are arranged on the left and right sides of the bottom cover, and the two second grooves are respectively located in the two first grooves.

[0013] Compared with the prior art, the utility model has the following advantages and effects:

[0014] The utility model fixes the pump body on the base, installs the driving motor in the base and connects the driving motor to the pump body, so that the pump body is driven to work by the driving motor, thereby achieving the purpose of connecting the pump body and the external motor into one through the base. Therefore, when installing the utility model, it is only necessary to install and fix the base to the corresponding working position, thereby simplifying the installation steps of the existing thin oil pump and improving the convenience of installing the thin oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a motor-built-in oil pump according to an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Front base interior cutaway view.

[0017] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the pump body.

[0018] Figure 4 yes Figure 3 Schematic diagram of the structure of the accompanying disk.

[0019] Figure 5 yesFigure 1 Internal sectional view of the middle oil outlet hole.

[0020] Figure 6 is Figure 1 Internal sectional view of the middle oil inlet hole.

[0021] Figure 7 is Figure 3 Front view of the middle main shaft.

[0022] Figure 8 is Figure 1 Exploded view of the middle base and bottom cover.

[0023] Figure 9 is Figure 1 Rear view of the middle base.

[0024] Figure 10 is Figure 1 Bottom view of the middle pump body.

[0025] Among them, the pump body 1, the top cover 11, the main cavity 12, the oil inlet hole 13, the oil outlet hole 14, the main shaft 15, the follower disk 16, the plunger rod 17, the plunger groove 171, the adjusting bolt 18, the thread groove 19, the transmission rod 20, the slot 21, the first groove 22, the inclined hole 23, the horizontal through hole 24, the front side groove 25, the rear side groove 26, the plunger chamber 27, the base 3, the first through hole 31, the fixing part 32, the second through hole 33, the installation position 34, the third through hole 35, the first groove 36, the drive motor 4, the rotating shaft 41, the inserting rod 42, the bottom cover 5, the second groove 51. Specific implementation mode

[0026] The following further elaborates on the present utility model in detail in conjunction with the accompanying drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0027] See Figures 1-6 , in this embodiment, an in-motor thin oil pump includes a pump body 1 and a base 3. The base 3 has a hollow structure with an open upper end. The bottom end of the pump body 1 is fixed at the upper opening of the base 3. A drive motor 4 is arranged inside the base 3. The rotating shaft 41 of the drive motor 4 is connected to the bottom end of the pump body 1 and drives the pump body 1 to work.

[0028] In the present utility model, by fixing the pump body 1 on the base 3, installing the drive motor 4 inside the base 3 and connecting the drive motor 4 to the pump body 1, the purpose of connecting the pump body 1 and an external motor into one body through the base 3 is achieved. Therefore, when installing the present utility model, only the base 3 needs to be installed and fixed to the corresponding working position, thus simplifying the installation steps of the existing thin oil pump and improving the convenience during installation.

[0029] At the same time, since a transmission component (such as a gearbox) is often required between the pump body 1 of the existing thin oil pump and the external motor for transmission, it results in a relatively large space required for the installation of the thin oil pump and the external motor, which is not conducive to the installation and use of the thin oil pump in a narrow space. The present utility model drives by directly connecting the driving motor 4 with the pump body 1, thereby removing the transmission component in the thin oil pump, reducing the overall space occupied by the thin oil pump and the driving motor 4, and facilitating the transportation and handling of the present utility model as well as its installation in a narrow space.

[0030] See Figure 2 , Figure 3 , the pump body 1 includes a top cover 11 and a main cavity 12. The main cavity 12 is a hollow structure with openings at both the upper and lower ends. The top cover 11 is detachably and sealingly fixed at the upper opening of the main cavity 12. An oil inlet hole 13 and multiple groups of oil outlet holes 14 are provided on the side wall of the main cavity 12. A main shaft 15 is vertically arranged in the main cavity 12. The main shaft 15 is connected to the driving motor 4 and is driven by the driving motor 4 to rotate. The upper end of the main shaft 15 extends into the interior of the top cover 11. A follower disk 16 in a vertically undulating shape (as shown in Figure 4 ) is arranged at the center in the top cover 11. The follower disk 16 is fixed to the upper end of the main shaft 15. A plurality of plunger rods 17 are equidistantly arranged around the follower disk 16 in a circumferential manner. An adjusting bolt 18 for adjusting the movement distance of the plunger rod 17 is arranged at the upper end of the plunger rod 17. The rotation of the follower disk 16 drives the plunger rod 17 to perform reciprocating up and down movements.

[0031] See Figure 2 , the lower end of the main shaft 15 is hermetically fitted and rotatably arranged in the lower opening of the main cavity 12. A transmission rod 20 with a slot 21 is coaxially arranged at the lower end of the main shaft 15. A plug rod 42 adapted to be inserted into the slot 21 is provided on the rotating shaft 41 of the driving motor 4.

[0032] When the present utility model is installed, first fix the pump body 1 to the base 3 through the above steps. At this time, the transmission rod 20 on the main shaft 15 is located in the upper opening of the base 3. Then pre-adjust the relative positions of the plug rod 42 and the slot 21, and then insert the driving motor 4 into the base 3, and make the plug rod 42 on the rotating shaft 41 of the driving motor 4 correspondingly inserted into the slot 21 of the transmission rod 20 to realize the connection between the driving motor 4 and the main shaft 15. The driving motor 4 and the main shaft 15 are connected by a plugging method, thereby facilitating the connection and separation of the two, improving the convenience of assembly and disassembly of the present utility model, and facilitating mass production and maintenance.

[0033] See Figure 1 , an installation position 34 for installing a control panel is provided on the front side of the base 3, and a third through hole 35 is provided in the installation position 34.

[0034] In the present utility model, the control panel is installed on the installation position 34, and the control panel is electrically connected to the driving motor 4 through a wire passing through the third through hole 35, so as to realize the start-stop and speed regulation of the driving motor 4 through the control panel, which is convenient for the operator to control the present utility model.

[0035] See Figures 3-7 , in the present utility model, since the edge of the follower disk 16 is located in the plunger groove 171 on the plunger rod 17, the lower end of the adjusting bolt 18 extends into the plunger groove 171, and when the follower disk 16 rotates, its upper and lower side surfaces can respectively contact the lower end of the adjusting bolt 18 and the bottom end of the plunger groove 171. When the follower disk 16 is driven to rotate by the main shaft 15, the follower disk 16 acts on the plunger rod 17 through its upper side surface in a vertically undulating shape. The upper side surface at the upward convex position of the follower disk 16 abuts against the lower end of the adjusting bolt 18 to drive the plunger rod 17 to move upward, and the lower side surface at the downward convex position of the follower disk 16 abuts against the bottom end of the plunger groove 171 to drive the plunger rod 17 to move downward. Therefore, the rotation of the follower disk 16 can drive the plunger rod 17 to reciprocate up and down, and at the same time, by screwing the adjusting bolt 18 to change the depth of the adjusting bolt 18 extending into the plunger groove 171, the distance of the up and down movement of the plunger rod 17 can be adjusted. The more the length of the adjusting bolt 18 extending into the plunger groove 171, the greater the height that the plunger rod 17 can be lifted.

[0036] In this embodiment, the plunger rod 17 is slidably arranged up and down in the main cavity 12. A horizontal plunger chamber 27 is arranged in the main cavity 12. The lower end of the plunger rod 17 extends into the plunger chamber 27, and an opening is arranged on the inner side of the plunger chamber 27. There are two groups of oil outlet holes 14 arranged up and down, and several oil outlet holes 14 are arranged at equal circumferential intervals in each group.

[0037] In this embodiment, a horizontally annular first groove 22 is formed on the main shaft 15. The first groove 22 is communicated with the oil inlet hole 13. An inclined hole 23 is obliquely formed in the main shaft 15. The lower end of the inclined hole 23 is communicated with the first groove 22. A horizontal through hole 24 is formed through the main shaft 15. The upper end of the inclined hole 23 is communicated with the horizontal through hole 24. The horizontal through hole 24 can be communicated with the plunger chamber 27 when the main shaft 15 rotates. Front side grooves 25 and rear side grooves 26 are respectively arranged on the front and rear side surfaces of the main shaft 15. When rotating with the main shaft, the upper end of the front side groove 25 and the lower end of the rear side groove 26 can be communicated with the plunger chamber 27. The lower end of the front side groove 25 can be sequentially communicated with a group of oil outlet holes 14 located on the lower side, and the upper end of the rear side groove 26 can be sequentially communicated with the other group of oil outlet holes 14 located on the upper side.

[0038] Therefore, the working principle of the pump body 1 in the present utility model is as follows:

[0039] Taking one of the plunger rods 17 as an example for illustration, first, the lubricating oil enters the first groove 12 through the oil inlet hole 13. The driving motor 4 is started to drive the main shaft 15 and the follower disk 16 to rotate simultaneously. Under the action of the follower disk 16, the plunger rod 17 is pushed upward, thus forming a negative pressure in the plunger chamber 27. At this time, the inner outlet of the plunger chamber 17 is aligned and communicated with the horizontal through hole. The lubricating oil in the first groove 12 is sucked into the plunger chamber 27 through the inclined hole 23 and the horizontal through hole 24 and temporarily stored therein. With the continuous rotation of the main shaft 15 and the follower disk 16, the plunger rod 17 moves downward under the action of the follower disk 16 and extends into the plunger chamber 27 to squeeze the lubricating oil. At this time, the inner outlet of the plunger chamber 27 moves to be aligned and communicated with the upper end of the front groove 25 or the lower end of the rear groove 26. At the same time, the lower end of the front groove 25 is communicated with one of the oil outlet holes 14 in the lower group, and the upper end of the rear groove 26 is communicated with one of the oil outlet holes 14 in the upper group. Thus, part of the lubricating oil in the plunger chamber 27 is squeezed out of the plunger chamber 27 and moves along the front groove 25 or the rear groove 26 and finally is discharged from the corresponding oil outlet hole 14, achieving the effect of the thin oil pump delivering the lubricating oil.

[0040] And in the present utility model, according to the foregoing analysis of adjusting the distance of the up-and-down movement of the plunger rod 17 by adjusting the position of the adjusting bolt 18, the more the length of the adjusting bolt 18 extending into the plunger groove 171, the greater the height that the plunger rod 17 can be pushed up, thus the greater the negative pressure that can be formed in the plunger chamber 27. Therefore, the more lubricating oil is sucked into the plunger chamber 27 at one time, and thus the more the amount of the lubricating oil discharged after being squeezed by the plunger rod 17. Therefore, in the present utility model, if it is desired to increase the single oil discharge amount of a certain oil outlet hole 14, only need to turn the adjusting bolt 18 on the plunger rod 17 corresponding to this oil outlet hole 14 downward. According to Figure 7 It can be seen that both the front groove 25 and the rear groove 26 are in the shape of slanting right upward. Therefore, the adjusting bolt 18 corresponding to each oil outlet hole 14 is the adjusting bolt 18 adjacent to the right side directly above this oil outlet hole 14.

[0041] To sum up, when the driving motor 4 drives the main shaft 15 and the follower disk 16 to rotate as a whole, the follower disk 16 drives a plurality of plunger rods 17 to do reciprocating up-and-down movements, realizing multi-point oil discharge and being able to meet the use requirements of multi-point lubrication. By removing the top cover 11 and adjusting the movement distance of the plunger rod 17 with the adjusting bolt 18, the size of the oil discharge amount can be conveniently adjusted.

[0042] Among them, the pump body 1 and the base 3 adopt a vertical structure, and the oil outlet holes 14 in the same group are arranged in a circumferential horizontal layout, making the oil discharge of the oil outlet holes 14 in the same group more stable.

[0043] See Figure 8, the base 3 is provided with a lower opening, and a bottom cover 5 is arranged in the lower opening of the base 3. The bottom cover 5 and the base 3 are fixedly connected by screws.

[0044] The driving motor 4 is inserted into the base 3 through the lower opening of the base 3, and then the bottom cover 5 is fixed in the lower opening of the base 3 by screws, so that the upper and lower ends of the driving motor 4 are respectively abutted by the bottom cover 5 of the base 3, realizing the fixed installation of the driving motor 4 in the base 3. The installation operation is convenient, and it is also convenient to remove the driving motor 4 for maintenance later.

[0045] See Figure 9 , the upper opening of the base 3 is circular, and a plurality of first through holes 31 are arranged at equal intervals in a circular shape at the upper opening of the base 3. A plurality of threaded grooves 19 are arranged at equal intervals in a circular shape at the bottom end of the main cavity 12. The positions of the threaded grooves 19 correspond to the positions of some of the first through holes 31.

[0046] When installing the pump body 1 on the base 3, first place the pump body 1 as a whole at the upper opening of the base 3, and make the threaded grooves 19 on the main cavity 12 correspond to some of the first through holes 31. Then, insert a plurality of screws into the base 3 through the lower opening of the base 3 and into the first through holes 31 and the threaded grooves 19, and tighten the screws to realize the fixed connection between the pump body 1 and the base 3.

[0047] See Figure 9 , a fixing part 32 is integrally formed at the rear side of the base 3, and a plurality of second through holes 33 are formed in the fixing part 32.

[0048] By inserting screws into the second through holes 33 and tightening them in the corresponding mounting screw holes at the working position, the present utility model is fixedly installed at the working position, which is convenient for the installation and removal of the present utility model.

[0049] See Figure 8 , two first grooves 36 are formed at the bottom end of the base 3. The first grooves 36 are symmetrically arranged on the left and right sides of the base 3. Two second grooves 51 are arranged on the left and right sides of the bottom cover 5, and the two second grooves 51 are respectively located in the two first grooves 36.

[0050] In the present utility model, the bottom cover 5 is embedded in the lower opening of the base 3, and the base 3 plays a role in protecting the bottom cover 5, reducing the occurrence of wear on the edge of the bottom cover 5 due to being knocked. At this time, when wanting to remove the bottom cover 5 from the base 3, tools such as fingernails or screwdrivers can be used to pass through the first groove 36 and insert into the second groove 51, and the bottom cover 5 can be removed from the base 3 by prying it outwards. Therefore, the first groove 36 and the second groove 51 facilitate the removal of the bottom cover 5, and thus facilitate the removal of the driving motor 4 for maintenance.

[0051] The above content described in this specification is only an illustrative example of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the specific embodiments described or use similar ways for substitution, as long as they do not deviate from the content of this specification of the present utility model or exceed the scope defined by this claim book, they shall fall within the protection scope of the present utility model.

Claims

1. An in-motor thin oil pump, characterized in that: It includes a pump body and a base. The base is a hollow structure with an open upper end. The bottom end of the pump body is fixed at the upper opening of the base. A driving motor is arranged inside the base, and the rotating shaft of the driving motor is connected to the bottom end of the pump body and drives the pump body to work.

2. The in-motor built-in thin oil pump according to claim 1, characterized in that: The pump body includes a top cover and a main cavity. The main cavity is a hollow structure with open upper and lower ends. The top cover is detachably and sealingly fixed at the upper opening of the main cavity. An oil inlet hole and multiple groups of oil outlet holes are provided on the side wall of the main cavity. A main shaft is vertically arranged inside the main cavity. The main shaft is connected to the driving motor and is driven by the driving motor to rotate. The upper end of the main shaft extends into the interior of the top cover. A follow-up disk in a vertically undulating shape is arranged at the center inside the top cover. The follow-up disk is fixed at the upper end of the main shaft. A plurality of plunger rods are equidistantly arranged around the follow-up disk in a circular manner. An adjusting bolt for adjusting the movement distance of the plunger rod is arranged at the upper end of the plunger rod. The rotation of the follow-up disk drives the plunger rod to perform up-and-down reciprocating motion.

3. The in-motor built-in thin oil pump according to claim 1, characterized in that: The base is provided with a lower opening, and a bottom cover is arranged inside the lower opening of the base. The bottom cover and the base are fixedly connected by screws.

4. The in-motor built-in thin oil pump according to claim 1, characterized in that: The upper opening of the base is circular, and a number of first through holes are equidistantly arranged in a circular shape at the upper opening of the base. A number of threaded grooves are equidistantly arranged in a circular shape at the bottom end of the main cavity. The positions of the threaded grooves correspond to the positions of some of the first through holes.

5. The in-motor mounted thin oil pump according to claim 2, wherein: The lower end of the main shaft is hermetically fitted and rotatably arranged inside the lower opening of the main cavity. A transmission rod with a slot is coaxially arranged at the lower end of the main shaft. A plug rod adapted to be inserted into the slot is provided on the rotating shaft of the driving motor.

6. The in-motor built-in thin oil pump according to claim 1, characterized in that: A fixing part is integrally formed at the rear side of the base, and a number of second through holes are provided on the fixing part.

7. The in-motor thin oil pump according to claim 1, characterized in that: An installation position for installing a control panel is provided on the front side surface of the base, and a third through hole is provided in the installation position.

8. The in-motor built-in thin oil pump according to claim 4, characterized in that: Two first grooves are provided at the bottom end of the base. The two first grooves are symmetrically arranged on the left and right sides of the base. Two second grooves are provided on the left and right sides of the bottom cover, and the two second grooves are respectively located inside the two first grooves.

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