Sand pump shell convenient to disassemble and assemble
By using trapezoidal bolts and a circular ring structure, the problem of easy disengagement between the sand pump housing and the end cover was solved, enabling convenient disassembly and fastening, reducing costs and improving sealing and wear resistance.
Patent Information
- Application Number
- CN202520766921.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-22
AI Technical Summary
The existing bolt connection between the sand pump housing and the end cover is prone to slippage, making it unusable and difficult to install, thus increasing economic costs.
The design employs trapezoidal bolts and a ring structure. The studs of the trapezoidal bolts engage with the grooves of the pump casing and end cover to achieve a tight connection. Nuts and washers are added to form an integrated design.
It enables convenient disassembly and fastening of the pump housing, avoids slippage, reduces operating costs, improves sealing and wear resistance, and extends service life.
Smart Images

Figure CN223938329U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a sand pump housing that is easy to disassemble and assemble, and belongs to the field of sand pump technology. Background Technology
[0002] The existing sand pump housing and end cover are connected by direct bolts. The sand pump housing has several threaded holes. The bolts pass through the corresponding positioning holes on the end cover and are connected to the threaded holes in the sand pump housing. However, this connection method sometimes causes the threads to come loose. Once the threads come loose, the sand pump housing cannot be used again and needs to be replaced with a new sand pump housing, which increases economic costs. Sometimes, threaded connection difficulties are also encountered, and the bolts cannot be fully inserted into the threaded holes, causing installation inconvenience. Utility Model Content
[0003] To overcome the shortcomings of the existing technology, this utility model provides a sand pump housing that is easy to disassemble and assemble. The sand pump housing and matching end cover are particularly easy to disassemble and assemble, the connection is tight, and the sealing performance is good. This avoids the situation where the pump housing body cannot be used due to the original structure coming loose, and can effectively ensure the normal use of the sand pump housing.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a sand pump housing that is easy to disassemble and assemble, including a pump housing body. When the pump housing body is placed horizontally, a ring is provided at the top of the opening of the pump housing body. In the circumferential direction of the ring, a number of opening slots are provided in the upper half of the edge of the ring, and the opening slots are evenly spaced. Below each opening slot, a number of trapezoidal slots are provided in the ring. A trapezoidal bolt is fitted in both the opening slot and the trapezoidal slot on the same side, with the threaded end of the trapezoidal bolt facing upward.
[0005] A circular end cap is placed on the top of the ring. Several evenly spaced slots are provided on the edge of the end cap. The slots correspond to the opening slots on their respective sides. The studs of the trapezoidal bolts are fitted through the slots. Nuts and washers are installed on the studs of the trapezoidal bolts.
[0006] Furthermore, the opening slots are connected to the corresponding trapezoidal slots on their respective sides.
[0007] Furthermore, the pump casing and the annular body are an integral structure.
[0008] Furthermore, the end caps are the same size as the annulus.
[0009] The beneficial effects of this utility model are: the pump casing body and matching end cover are particularly convenient to assemble and disassemble, and the connection is tight; it has good sealing performance, is tightly sealed, and does not leak water or air, making it convenient to use; it avoids the situation where the pump casing body cannot be used due to the original structure coming loose, and can effectively ensure the normal use of the sand pump casing; the trapezoidal bolts can be replaced, effectively reducing the cost of use; the pump casing body made of alloy wear-resistant material can resist the wear and corrosion of sand and gravel, is wear-resistant and durable, and can extend the service life of the pump casing. Attached Figure Description
[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0011] Figure 1 This is a top view of the present invention.
[0012] Figure 2 This is the front view of this utility model.
[0013] Figure 3 This is a schematic diagram of the installation of the end cap of this utility model.
[0014] Figure 4 This is a schematic diagram of the end cap of this utility model.
[0015] Numbering on the map:
[0016] 1. Pump casing body, 2. Circular ring, 3. Opening groove, 4. Trapezoidal groove, 5. Trapezoidal bolt, 6. End cover, 7. Groove. Detailed Implementation
[0017] like Figure 1 As shown in Figure 4, a sand dredging pump housing that is easy to assemble and disassemble includes a pump housing body 1. When the pump housing body 1 is placed horizontally, a circular ring 2 is provided at the top of the opening of the pump housing body 1, and the pump housing body 1 and the circular ring 2 are integral structures. In the circumferential direction of the circular ring 2, a plurality of opening grooves 3 are provided in the upper half of the edge of the circular ring 2, and the opening grooves 3 are evenly spaced. Below each opening groove 3, a plurality of trapezoidal grooves 4 are correspondingly provided in the circular ring 2, and the opening grooves 3 and their respective trapezoidal grooves 4 are connected. Similarly, a trapezoidal bolt 5 is fitted in both the opening slot 3 and the trapezoidal slot 4 on the same side, with the threaded end of the trapezoidal bolt 5 facing upwards; a circular end cap 6 is placed on the top of the annular body 2, and the end cap 6 is the same size as the annular body 2; several evenly spaced slots 7 are provided on the edge of the end cap 6, and the slots 7 correspond to the positions of the opening slots 3 on their respective sides. The studs of the trapezoidal bolts 5 fit through the slots 7, and nuts and washers are installed on the studs of the trapezoidal bolts 5; the pump housing body 1 is made of wear-resistant alloy material.
[0018] During use, each trapezoidal bolt 5 is fitted into the trapezoidal groove 4 and the open groove 3 on the pump housing body 1, with the threaded end of the trapezoidal bolt 5 facing upwards. The end cap 6, which matches the pump housing body 1, is placed on the annular body 2. The studs of the trapezoidal bolts 5 pass through the groove 7, and washers and nuts are installed on the trapezoidal bolts 5. The trapezoidal blocks of the trapezoidal bolts 5 are located in the trapezoidal groove 4, and the studs of the trapezoidal bolts 5 are located in the open groove 3 and the groove 7. The end cap 6 is fastened to the pump housing body 1 through the threaded connection of the trapezoidal bolts 5 and nuts. The trapezoidal block of the trapezoidal bolt 5 is effectively locked in the trapezoidal groove 4. This connection method gives the pump casing good sealing performance, ensuring a tight seal without water or air leakage, and a secure connection. The end cover 6 is particularly easy to assemble and disassemble from the pump casing body 1, and the trapezoidal bolt 5 can be replaced if damaged, effectively reducing the cost of use and preventing the pump casing body 1 from becoming unusable due to the original structure coming loose. The pump casing body 1, made of wear-resistant alloy material, can resist the wear and corrosion of sand and gravel, extending the service life of the pump casing body 1.
Claims
1. A sand dredging pump housing that is easy to disassemble and assemble, comprising a pump housing body (1), characterized in that: When the pump housing body (1) is placed horizontally, a ring body (2) is provided at the top of the opening of the pump housing body (1); in the circumferential direction of the ring body (2), a number of opening slots (3) are provided in the upper half of the edge of the ring body (2), and the opening slots (3) are evenly spaced; below each opening slot (3), a number of trapezoidal slots (4) are provided in the ring body (2), and a trapezoidal bolt (5) is fitted in the opening slot (3) and trapezoidal slot (4) on the same side, with the threaded end of the trapezoidal bolt (5) facing upward; A circular end cap (6) is placed on the top of the ring (2). Several evenly spaced slots (7) are provided on the edge of the end cap (6). The slots (7) correspond to the opening slots (3) on their respective sides. The studs of the trapezoidal bolts (5) pass through the slots (7). Nuts and washers are installed on the studs of the trapezoidal bolts (5).
2. The sand pump housing that is easy to disassemble and assemble according to claim 1, characterized in that: The open slot (3) is connected to the corresponding trapezoidal slot (4) on each side.
3. The sand pump housing that is easy to disassemble and assemble according to claim 1, characterized in that: The pump casing (1) and the annular body (2) are an integral structure.
4. The sand dredging pump housing that is easy to disassemble and assemble according to claim 1, characterized in that: The end cap (6) is the same size as the annular body (2).