An easy-to-install water pump structure for a micro-tiller

By introducing a two-way screw and rotary knob into the water pump of the mini tiller, the water pump can be quickly installed and disassembled, solving the cumbersome disassembly problem under the traditional bolt fixing method and improving the convenience of maintenance.

CN224453208UActive Publication Date: 2026-07-03NANZHANG COUNTY HUASHENG MACHINERY MFG

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANZHANG COUNTY HUASHENG MACHINERY MFG
Filing Date
2025-07-22
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The disassembly process of the water pump of the existing mini tiller is cumbersome, requiring multiple rusted or stripped bolts. Improper operation can easily lead to damage to the threads, making maintenance inconvenient.

Method used

The design incorporates a two-way screw, rotary knob, internal thread plate, connecting block, positioning groove, positioning plate, slot, and insert block. The slot and insert block work together to achieve quick pre-positioning. Rotating the rotary knob drives the internal thread plate to move. Combined with the locking mechanism of spring and clamping plate, the disassembly and installation process is simplified.

Benefits of technology

It significantly simplifies maintenance operations, allowing a single person to quickly install and remove the water pump body without special tools, thus avoiding damage to the threads and tedious adjustment processes.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224453208U_ABST
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Abstract

This utility model discloses an easy-to-install water pump structure for a micro-tiller, including a mounting base. A base plate is provided at the upper end of the mounting base, and the water pump body is fixedly connected to the top of the base plate. Side plates are fixedly connected to both sides of the bottom of the mounting base. A bidirectional screw is provided near the center between the two side plates, and a rotary knob is fixedly installed at the center of the surface of the bidirectional screw. This easy-to-install water pump structure for a micro-tiller utilizes the design of a bidirectional screw, rotary knob, internal threaded plate, connecting block, positioning groove, positioning plate, slot, and insert block. The cooperation of the slot and insert block enables quick pre-positioning of the base plate and the mounting base. The user only needs to press the base plate vertically to complete the initial alignment, avoiding the tedious operation of repeatedly adjusting the position. Rotating the rotary knob drives the bidirectional screw to rotate, causing the two internal threaded plates to move towards each other along the sliding groove, allowing the positioning plate to accurately engage in the positioning groove of the connecting block, forming a mechanical limit, significantly simplifying maintenance operations.
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Description

Technical Field

[0001] This utility model relates to the field of micro-tiller water pump technology, specifically to an easy-to-install micro-tiller water pump structure. Background Technology

[0002] The mini-tiller water pump is a small, portable water pump device that combines the power system of a mini-tiller. It is mainly used for irrigation, drainage and auxiliary operations in the agricultural field. Its core function is to drive the water pump through the diesel or gasoline engine of the mini-tiller to quickly pump and transport water, and solve the problems of water shortage or water accumulation in farmland.

[0003] Currently, most mini-tiller water pumps on the market use traditional bolt fixing methods, directly locking the pump body to the frame or base. However, when the equipment needs repair due to wear, blockage, or aging seals, users have to face a cumbersome disassembly process. This requires not only wrenches and screwdrivers, but also the unscrewing of multiple rusted or stripped bolts one by one. Improper operation can easily damage the threads, or even require destructive removal, making it inconvenient for users. Therefore, we propose an easy-to-install mini-tiller water pump structure. Utility Model Content

[0004] The purpose of this utility model is to provide an easy-to-install water pump structure for micro-tillers, in order to solve the problem mentioned in the background art that the water pumps for micro-tillers currently on the market generally adopt the traditional bolt fixing method, which directly locks the pump body to the frame or base. However, when the equipment needs to be repaired due to wear, blockage or aging of seals, users have to face a cumbersome disassembly process. Not only do they need to prepare tools such as wrenches and screwdrivers, but they also need to unscrew multiple rusted or stripped bolts one by one. Slight improper operation may lead to damage to the threads, or even require destructive removal, which is inconvenient for users.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-install micro-tiller water pump structure, including a mounting base, a base plate at the upper end of the mounting base, a water pump body fixedly connected to the top of the base plate, side plates fixedly connected to both sides of the bottom of the mounting base, a bidirectional screw rod at the center between the two side plates, a rotary knob fixedly installed at the center of the surface of the bidirectional screw rod, internal thread plates threadedly connected to both sides of the surface of the bidirectional screw rod, two connecting blocks fixedly connected to the center of the bottom of the base plate, positioning grooves formed at the center of the opposite sides of the two connecting blocks, positioning plates fixedly connected to the top of the opposite sides of the two internal thread plates, a groove formed at the top of the center of the front surface of the base plate, a spring fixedly connected to the top of the groove, a spring block fixedly connected to the bottom of the spring, a locking plate fixedly connected to the center of the bottom of the spring block, a lifting plate fixedly connected to the center of the front surface of the spring block, slots formed at the top of both sides of the mounting base, and insert blocks fixedly connected to the center of both sides of the base plate.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This easy-to-install micro-tiller water pump structure utilizes a design incorporating a bidirectional screw, a rotary knob, internal threaded plates, connecting blocks, positioning grooves, positioning plates, slots, and inserts. The slots and inserts work together to quickly position the base plate and mounting seat. Users only need to press the base plate vertically to achieve initial alignment, avoiding the tedious process of repeatedly adjusting the position. Rotating the rotary knob drives the bidirectional screw to rotate, causing the internal threaded plates on both sides to move towards each other along the sliding grooves. This allows the positioning plate to precisely engage with the positioning groove of the connecting block, forming a mechanical limit and significantly simplifying maintenance. The design of springs, spring blocks, lifting plates, and locking plates ensures that the spring blocks driven by the springs engage with the locking plates in the transverse groove of the rotary knob, forming a locking mechanism that effectively prevents accidental rotation caused by external forces. Once the mounting seat is fixed, the entire disassembly or installation process requires no special tools, and a single person can quickly assemble and disassemble the water pump body using the handle. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram;

[0010] Figure 3 This is a side view of the internal thread plate of this utility model;

[0011] Figure 4 This is a three-dimensional view of the structure of the spring block of this utility model;

[0012] Figure 5 This is the main view of the structure of this utility model.

[0013] In the diagram: 1. Mounting base; 2. Base plate; 3. Pump body; 4. Side plate; 5. Two-way screw; 6. Rotary knob; 7. Internal thread plate; 8. Connecting block; 9. Positioning groove; 10. Positioning plate; 11. Sliding groove; 12. Sliding block; 13. Support leg; 14. Slot; 15. Insert block; 16. Groove; 17. Spring; 18. Spring block; 19. Lifting plate; 20. Locking plate; 21. Handle. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-5 This utility model provides a technical solution: an easy-to-install water pump structure for a micro-tiller, including a mounting base 1, a base plate 2 at the upper end of the mounting base 1, a water pump body 3 fixedly connected to the top of the base plate 2, side plates 4 fixedly connected to both sides of the bottom of the mounting base 1, a bidirectional screw 5 located near the center between the two side plates 4, a rotary knob 6 fixedly installed at the center of the surface of the bidirectional screw 5, and internal thread plates 7 threadedly connected to both sides of the surface of the bidirectional screw 5, and two connecting blocks 8 fixedly connected to the center of the bottom of the base plate 2. A positioning groove 9 is provided at the center of each opposite side of block 8. A positioning plate 10 is fixedly connected to the top of each of the two internal threaded plates 7 on opposite sides. A groove 16 is provided at the top of the center of the front surface of the base plate 2. A spring 17 is fixedly connected to the top of the groove 16. A spring block 18 is fixedly connected to the bottom of the spring 17. A locking plate 20 is fixedly connected to the center of the bottom of the spring block 18. A lifting plate 19 is fixedly connected to the center of the front surface of the spring block 18. Slots 14 are provided at the top of both sides of the mounting base 1. Insert blocks 15 are fixedly connected to the center of both sides of the base plate 2.

[0016] The two ends of the bidirectional screw 5 are respectively connected to the bearings fixedly installed on the opposite side of the two side plates 4 near the center. The two ends are connected to the side plates 4 through the bearings, so as to achieve stable rotation while bearing axial load. Its thread transmission characteristics can convert the rotational motion of the knob 6 into the linear motion of the internal thread plate 7, so as to complete the precise engagement of the positioning plate 10 and the positioning groove 9.

[0017] Support legs 13 are fixedly connected to the four corners of the bottom of the base plate 2. Bolt holes are opened on both sides of the top of the mounting base 1. After disassembly and maintenance, the support legs 13 can support the ground to avoid the connecting block 8 from contacting and wearing with the ground.

[0018] A handle 21 is fixedly connected to the center of the upper end of the base plate 2, which makes it easy for a single person to hold and move the entire water pump body 3.

[0019] The outer wall of the rotary knob 6 has several horizontal grooves. The lower end of the locking plate 20 extends through to the outside of the base plate 2 and engages with the inner wall of the horizontal groove. The engagement of the outer horizontal groove with the locking plate 20 forms an anti-reverse mechanism. The locking is achieved by the spring block 18 driven by the spring 17, which prevents the bidirectional screw 5 from rotating accidentally due to vibration or external force. At the same time, the horizontal groove can prevent the user from slipping when rotating the rotary knob 6. The opposite sides of the two positioning plates 10 extend through to the inside of the two positioning grooves 9 and engage with the inner wall of the positioning grooves 9. The positioning plates 10 extending through to the inside of the positioning grooves 9 can position the base plate 2 and the water pump body 3 on the mounting base 1. The front surface of the lifting plate 19 extends through to the outside of the groove 16, which makes it easy for the user to move the lifting plate 19 upward so that the locking plate 20 is disengaged from the horizontal groove.

[0020] Sliding blocks 12 are fixedly connected to the center of the bottom of the two internal threaded plates 7. Sliding grooves 11 are opened in the bottom of the mounting base 1 corresponding to the lower ends of the two sliding blocks 12. The bottom of the two sliding blocks 12 extends into the interior of the two sliding grooves 11 and slides in connection with the inner wall of the sliding grooves 11, constraining their movement trajectory to be a horizontal straight line, ensuring that the positioning plate 10 is accurately inserted into the positioning groove 9, and improving the reliability of the connection.

[0021] The opposite sides of the two inserts 15 extend into the interior of the two slots 14 and contact the inner wall of the slots 14, achieving quick pre-positioning and avoiding repeated adjustments during installation, thus providing an initial alignment basis for subsequent operation of the knob 6.

[0022] First, pre-fix the mounting base 1 onto the designated device. Align the inserts 15 on both sides of the base plate 2 with the slots 14 on both sides of the mounting base 1 and press them down vertically so that the inserts 15 are fully inserted into the slots 14. This achieves quick pre-positioning of the base plate 2 and the mounting base 1, avoiding repeated adjustments. Then, lift the lifting plate 19 upwards, which drives the locking plate 20 to move upwards synchronously through the spring block 18 and compresses the spring 17. At the same time, rotate the rotary knob 6 to drive the bidirectional screw 5 to rotate. The internal thread plates 7 on both sides of its surface move towards each other along the sliding groove 11 through the sliding block 12, causing the positioning plate 10 to be horizontally inserted into the positioning groove 9 of the connecting block 8. Then, release the lifting plate 19. The spring 17's restoring property pushes the spring block 18 to make the locking plate 20 lock into the horizontal groove on the surface of the rotary knob 6, completing the installation of the water pump body 3. The operation is convenient.

[0023] In summary, this easy-to-install micro-tiller water pump structure, through the design of the bidirectional screw 5, rotary knob 6, internal threaded plate 7, connecting block 8, positioning groove 9, positioning plate 10, slot 14, and insert block 15, allows for quick pre-positioning of the base plate 2 and mounting base 1. Users only need to press the base plate 2 vertically to achieve initial alignment, avoiding the tedious operation of repeated adjustments. Rotating the rotary knob 6 drives the bidirectional screw 5 to rotate, causing the two internal threaded plates 7 to move towards each other along the sliding groove 11. The positioning plate 10 is precisely engaged in the positioning groove 9 of the connecting block 8 to form a mechanical limit, which significantly simplifies maintenance operations. The design of the spring 17, spring block 18, lifting plate 19 and locking plate 20, with the spring block 18 driven by the spring 17 driving the locking plate 20 to engage with the horizontal groove of the rotary knob 6, forms a locking mechanism, which effectively avoids accidental rotation caused by external force. After the mounting base 1 is fixed, when maintenance is required, the entire disassembly or installation process does not require special tools, and a single person can quickly complete the installation and removal of the water pump body 3 by using the handle 21.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0025] 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 water pump structure for an easy-to-install micro-tiller, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a base plate (2) at its upper end. A water pump body (3) is fixedly connected to the top of the base plate (2). Side plates (4) are fixedly connected to both sides of the bottom of the mounting base (1). A bidirectional screw (5) is provided at the center between the two side plates (4). A rotary knob (6) is fixedly installed at the center of the surface of the bidirectional screw (5). Internal thread plates (7) are threadedly connected to both sides of the surface of the bidirectional screw (5). Two connecting blocks (8) are fixedly connected to the center of the bottom of the base plate (2). A positioning groove (9) is opened at the center of the opposite side of the two connecting blocks (8). Each of the internal threaded plates (7) has a positioning plate (10) fixedly connected to the top position on the opposite side. The bottom plate (2) has a groove (16) at the top position of the center of the front surface. A spring (17) is fixedly connected to the top of the groove (16). A spring block (18) is fixedly connected to the bottom of the spring (17). A locking plate (20) is fixedly connected to the center of the bottom of the spring block (18). A lifting plate (19) is fixedly connected to the center of the front surface of the spring block (18). Slots (14) are opened on the top of both sides of the mounting base (1). Insert blocks (15) are fixedly connected to the center of both sides of the bottom plate (2).

2. A micro tiller water pump structure easy to install according to claim 1, characterized in that: The two ends of the bidirectional screw (5) are respectively connected to bearings fixedly installed on the opposite side of the two side plates (4) near the center.

3. A micro tiller water pump structure easy to install as claimed in claim 1 wherein: The bottom of the base plate (2) is fixedly connected to the four corners of the base plate (2), and bolt holes are provided on both sides of the top of the mounting base (1).

4. An easily installable micro tiller water pump structure as claimed in claim 1 wherein: A handle (21) is fixedly connected to the center of the upper end of the base plate (2).

5. An easily installable micro tiller water pump structure as claimed in claim 1 wherein: The outer wall of the rotary knob (6) is provided with several horizontal grooves. The lower end of the clamping plate (20) extends through to the outside of the base plate (2) and engages with the inner wall of the horizontal groove. The opposite sides of the two positioning plates (10) extend through to the inside of the two positioning grooves (9) and engage with the inner wall of the positioning grooves (9). The front surface of the lifting plate (19) extends through to the outside of the groove (16).

6. An easily installable micro tiller water pump structure as claimed in claim 1 wherein: The center of the bottom of each of the two internal thread plates (7) is fixedly connected to a sliding block (12). The bottom of the mounting base (1) is provided with a sliding groove (11) corresponding to the lower end of each of the two sliding blocks (12). The bottom of each of the two sliding blocks (12) extends into the interior of the two sliding grooves (11) and slides in connection with the inner wall of the sliding groove (11).

7. The easily installable water pump structure for a micro-tiller according to claim 1, characterized in that: The opposite sides of the two inserts (15) extend into the interior of the two slots (14) and contact the inner wall of the slots (14).