Portable hand-cranking oil delivery pump

Abstract

The utility model discloses a portable hand-cranking oil delivery pump which comprises a pump body, the front side of the pump body is rotatably connected with a rotating shaft through a bearing, the front side of the surface of the rotating shaft is movably sleeved with an installation sleeve, the front side of the installation sleeve is flush with the front side of the rotating shaft, and the surface of the installation sleeve is fixedly connected with a hand-cranking handle. By arranging the positioning mechanism, when the hand crank is damaged and needs to be maintained and replaced, only a sliding sleeve needs to be pulled downwards to drive a check block to move downwards and extrude a limiting sleeve spring to enable the check block to be separated from a positioning block, then a mounting sleeve is pulled forwards to enable the positioning block to be separated from a positioning groove, and the mounting sleeve is separated from a rotating shaft; therefore, the mounting sleeve and the hand crank can be detached from the rotating shaft, the operation is simple and convenient, and the maintenance and replacement efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, specifically a portable hand-cranked oil pump. Background Technology

[0002] In some remote areas or small-scale operations, such as refueling agricultural irrigation equipment in rural areas or replenishing fuel for small ships, there is often a lack of large-scale automated oil transfer equipment.

[0003] A search revealed patent application CN202121606460.0, which discloses a portable hand-cranked vane oil pump, including a pump body and a fixing device. An oil suction pipe is fixedly connected to the bottom outer wall of the pump body, and the fixing device is also fixedly connected to the bottom outer wall of the pump body via the oil suction pipe. A discharge pipe is fixedly connected to the top outer wall of the pump body, and a sealing ring is fixedly connected to the bottom of the oil suction pipe. This portable hand-cranked vane oil pump has the following drawbacks in practical use: when the hand crank is damaged, it is inconvenient to disassemble the hand crank, thus hindering repair and replacement. Therefore, we propose a portable hand-cranked oil pump. Utility Model Content

[0004] The purpose of this invention is to provide a portable hand-cranked oil pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable hand-cranked oil pump, comprising a pump body, a rotating shaft rotatably connected to the front side of the pump body via a bearing, an mounting sleeve movably fitted on the front side of the rotating shaft, the front side of the mounting sleeve being flush with the front side of the rotating shaft, a hand crank fixedly connected to the surface of the mounting sleeve, the mounting sleeve being connected to the rotating shaft via a positioning mechanism, an oil discharge pipe threadedly connected to the top of the pump body, and an oil suction pipe threadedly connected to the bottom of the pump body.

[0006] Furthermore, the positioning mechanism includes a positioning groove, a positioning block, a stop block, a movable groove, a sliding column, a sliding sleeve, and a limiting sleeve spring, and the top front side of the rotating shaft is provided with a positioning groove.

[0007] Furthermore, a positioning block is fixedly connected to the top of the inner wall of the mounting sleeve, the bottom of the positioning block penetrates the positioning groove and extends into the interior of the positioning groove, and the positioning block and the positioning groove are movably engaged.

[0008] Furthermore, the front side of the positioning block is flush with the front side of the rotating shaft, the rear side of the positioning block abuts against the rear side of the inner wall of the positioning groove, and a stop block is movably connected to the front side of the rotating shaft corresponding to the position of the positioning block, with the rear side of the stop block movably abutting against the front side of the positioning block.

[0009] Furthermore, a movable groove is provided on the front side of the rotating shaft, and two sliding columns are fixedly connected to the top of the inner wall of the movable groove, while a sliding sleeve is movably connected to the upper part of the movable groove.

[0010] Furthermore, the bottom of the sliding column penetrates through the sliding sleeve and extends to the outside of the sliding sleeve, and is fixedly connected to the bottom of the inner wall of the movable groove. The sliding sleeve and the sliding column are slidably connected. The front side of the sliding sleeve extends to the outside of the movable groove. The bottom of the stop block is fixedly connected to the top of the sliding sleeve.

[0011] Furthermore, a limiting spring is fitted on the surface of the sliding column and at the bottom of the sliding sleeve. The top of the limiting spring abuts against the bottom of the sliding sleeve, and the bottom of the limiting spring abuts against the bottom of the inner wall of the movable groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting a positioning mechanism, allows for easy repair and replacement of a damaged hand crank. Simply pull down the sliding sleeve to move the stop block downwards, simultaneously squeezing the limiting sleeve spring to disengage the stop block from the positioning block. Then, pull the mounting sleeve forward to disengage the positioning block from the positioning groove and the mounting sleeve from the rotating shaft. This allows the mounting sleeve and hand crank to be removed from the rotating shaft, making the operation simple and convenient and greatly improving the efficiency of repair and replacement.

[0014] 2. The snap-fit ​​between the positioning block and the positioning groove, as well as the setting of the stop block, ensures the stability of the hand crank during rotation, avoids shaking or falling off due to unstable connection, and ensures the normal operation of oil delivery.

[0015] 3. The setting of the limit spring ensures that the stop block remains in contact with the positioning block without disassembling the hand crank, further enhancing the reliability of the connection. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the hand crank of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the movable groove of this utility model;

[0020] Figure 5 This is a schematic diagram of the assembly structure of the rotating shaft and sliding sleeve of this utility model.

[0021] In the diagram: 1. Pump body; 2. Rotary shaft; 3. Mounting sleeve; 4. Hand crank; 5. Positioning mechanism; 501. Positioning groove; 502. Positioning block; 503. Stop block; 504. Movable groove; 505. Sliding column; 506. Sliding sleeve; 507. Limiting sleeve spring; 6. Oil discharge pipe; 7. Oil suction pipe. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Please see Figure 1-5 A portable hand-cranked oil pump includes a pump body 1. A rotating shaft 2 is rotatably connected to the front side of the pump body 1 via a bearing. An mounting sleeve 3 is movably fitted on the front side of the rotating shaft 2. The front side of the mounting sleeve 3 is flush with the front side of the rotating shaft 2. A hand crank 4 is fixedly connected to the surface of the mounting sleeve 3. The mounting sleeve 3 and the rotating shaft 2 are connected by a positioning mechanism 5.

[0025] The top of the pump body 1 is threaded with an oil drain pipe 6, and the bottom of the pump body 1 is threaded with an oil suction pipe 7. The oil drain pipe 6 and the oil suction pipe 7 are connected by threads to facilitate installation and disassembly, and to facilitate the replacement of oil pipes of different lengths or specifications according to actual use scenarios.

[0026] The positioning mechanism 5 includes a positioning groove 501, a positioning block 502, a stop block 503, a movable groove 504, a sliding column 505, a sliding sleeve 506, and a limiting sleeve spring 507. The positioning groove 501 is provided on the top front side of the rotating shaft 2.

[0027] The top of the inner wall of the mounting sleeve 3 is fixedly connected to a positioning block 502. The bottom of the positioning block 502 passes through the positioning groove 501 and extends into the interior of the positioning groove 501. The positioning block 502 and the positioning groove 501 are movably engaged.

[0028] The front side of the positioning block 502 is flush with the front side of the rotating shaft 2, and the rear side of the positioning block 502 abuts against the rear side of the inner wall of the positioning groove 501, thereby ensuring the stability of the hand crank during rotation after installation.

[0029] A stop block 503 is movably connected to the front side of the rotating shaft 2 corresponding to the position of the positioning block 502. The rear side of the stop block 503 movably abuts against the front side of the positioning block 502, and its function is to prevent the positioning block 502 from coming out of the front end of the positioning groove 501.

[0030] The front side of the rotating shaft 2 is provided with a movable groove 504. Two sliding columns 505 are fixedly connected to the top of the inner wall of the movable groove 504, and a sliding sleeve 506 is movably connected to the upper part of the movable groove 504.

[0031] The bottom of the sliding column 505 passes through the sliding sleeve 506 and extends to the outside of the sliding sleeve 506, and is fixedly connected to the bottom of the inner wall of the movable groove 504. The sliding sleeve 506 and the sliding column 505 are slidably connected, and the sliding sleeve 506 can slide smoothly on the sliding column 505.

[0032] The front side of the sliding sleeve 506 extends to the outside of the movable groove 504. The bottom of the stop block 503 is fixedly connected to the top of the sliding sleeve 506. A limiting spring 507 is sleeved on the surface of the sliding column 505 and located at the bottom of the sliding sleeve 506. The top of the limiting spring 507 abuts against the bottom of the sliding sleeve 506, and the bottom of the limiting spring 507 abuts against the bottom of the inner wall of the movable groove 504. Through the above arrangement, under normal working conditions, the limiting spring 507 can continuously apply an upward elastic force to the sliding sleeve 506, thereby pushing the stop block 503 to always maintain abutment against the front side of the positioning block 502. This effectively prevents the positioning block 502 from accidentally coming out of the front end of the positioning groove 501, greatly enhancing the reliability of the connection between the hand crank 4 and the rotating shaft 2, and ensuring stable and efficient oil delivery.

[0033] In practical application: When in use, the suction pipe 7 is placed into the oil storage container. By cranking the hand crank 4, the mounting sleeve 3 and the rotating shaft 2 are rotated, thereby driving the pump body 1 to work, so that the oil is drawn from the storage container and discharged through the oil discharge pipe 6 to the equipment that needs refueling. When the hand crank 4 is damaged and needs to be repaired or replaced, simply pull down the sliding sleeve 506, which will cause the stop block 503 to move downward, and at the same time squeeze the limiting sleeve spring 507, so that the stop block 503 is disengaged from the positioning block 502. Then, pull the mounting sleeve 3 forward, so that the positioning block 502 is disengaged from the positioning groove 501, and the mounting sleeve 3 is disengaged from the rotating shaft 2. Thus, the mounting sleeve 3 and the hand crank 4 can be removed from the rotating shaft 2, and then the hand crank 4 can be repaired or replaced.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable hand-cranked oil pump, comprising a pump body (1), characterized in that: The front side of the pump body (1) is rotatably connected to a rotating shaft (2) via a bearing. A mounting sleeve (3) is movably fitted on the front side of the rotating shaft (2). The front side of the mounting sleeve (3) is flush with the front side of the rotating shaft (2). A hand crank (4) is fixedly connected to the surface of the mounting sleeve (3). The mounting sleeve (3) and the rotating shaft (2) are connected by a positioning mechanism (5).

2. The portable hand-cranked oil pump according to claim 1, characterized in that: The positioning mechanism (5) includes a positioning groove (501), a positioning block (502), a stop block (503), a movable groove (504), a sliding column (505), a sliding sleeve (506), and a limiting sleeve spring (507). The top front side of the rotating shaft (2) is provided with a positioning groove (501).

3. A portable hand-cranked oil pump according to claim 2, characterized in that: The top of the inner wall of the mounting sleeve (3) is fixedly connected to a positioning block (502). The bottom of the positioning block (502) passes through the positioning groove (501) and extends into the interior of the positioning groove (501). The positioning block (502) and the positioning groove (501) are movably engaged.

4. A portable hand-cranked oil pump according to claim 3, characterized in that: A stop block (503) is movably connected to the front side of the rotating shaft (2) corresponding to the position of the positioning block (502), and the rear side of the stop block (503) movably abuts against the front side of the positioning block (502).

5. A portable hand-cranked oil pump according to claim 4, characterized in that: The front side of the rotating shaft (2) is provided with a movable groove (504), and two sliding columns (505) are fixedly connected to the top of the inner wall of the movable groove (504). A sliding sleeve (506) is movably connected to the upper part of the movable groove (504).

6. A portable hand-cranked oil pump according to claim 5, characterized in that: The bottom of the sliding column (505) passes through the sliding sleeve (506) and extends to the outside of the sliding sleeve (506), and is fixedly connected to the bottom of the inner wall of the movable groove (504). The sliding sleeve (506) and the sliding column (505) are slidably connected. The front side of the sliding sleeve (506) extends to the outside of the movable groove (504). The bottom of the stop block (503) is fixedly connected to the top of the sliding sleeve (506).

7. A portable hand-cranked oil pump according to claim 6, characterized in that: A limiting spring (507) is fitted on the surface of the sliding column (505) and at the bottom of the sliding sleeve (506). The top of the limiting spring (507) abuts against the bottom of the sliding sleeve (506), and the bottom of the limiting spring (507) abuts against the bottom of the inner wall of the movable groove (504).

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