Flexible connection assembly for hydraulic rodless drainage pump
By setting a protective structure of silicone rubber sleeve and steel wire braided mesh on the outside of the metal bellows, combined with the connection structure, the problem of insufficient protection of the flexible connection component of the hydraulic rodless pumping pump is solved, the pressure resistance and sealing performance are enhanced, and the service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO LINHUI ENERGY EQUIPMENT CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-04-24
AI Technical Summary
The flexible connection components of traditional hydraulic rodless pumps lack adequate protection, making the metal bellows susceptible to deformation or rupture under external pressure or impact, resulting in poor applicability.
A silicone rubber sleeve and a steel wire braided mesh are installed on the outside of the metal corrugated pipe, which are fixed by clamps and connecting plates to enhance the pressure resistance and prevent loosening through the connection structure, thus ensuring the airtightness.
It improves the pressure resistance and sealing performance of the flexible connection components, preventing the metal bellows from deforming or breaking under external pressure or impact, and extending its service life.
Smart Images

Figure CN224162231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic rodless pumping technology, and in particular to a flexible connection component for hydraulic rodless pumping. Background Technology
[0002] In a hydraulic rodless pump system, the flexible connection component is one of the key components. Among them, the metal bellows can be used as a flexible connector to connect pipes of different materials and diameters. It can adapt to the installation deviation and deformation of the pipes and ensure the sealing and reliability of the pipeline system. Therefore, a flexible connection component for hydraulic rodless pumps is used.
[0003] Traditional flexible connection components used in hydraulic rodless pumps have limited applicability due to insufficient protective measures, making it difficult to prevent the metal bellows from deforming or breaking under external pressure or impact. Utility Model Content
[0004] The purpose of this invention is to provide a flexible connection component for a hydraulic rodless pump, in order to solve the shortcomings of existing flexible connection components for hydraulic rodless pumps in terms of insufficient protective measures.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a flexible connection component for a hydraulic rodless pump, comprising a metal bellows;
[0006] Both ends of the metal corrugated pipe are fixed with fixing pipes, and one end of each fixing pipe is fixed with a connecting structure.
[0007] The outer side of the metal bellows is provided with a protective structure;
[0008] The protective structure includes a silicone rubber sleeve fitted over the outside of a metal corrugated pipe. A steel wire braided mesh is provided on the outside of the silicone rubber sleeve. A clamp is provided on the outside of both ends of the steel wire braided mesh. A connecting plate is fitted on both ends of one side of the clamp. A connecting nut is threaded onto the outer wall of the clamp on one side of the connecting plate.
[0009] When using this device, the protective structure enhances its pressure resistance, thereby improving the applicability of the flexible connection assembly for the hydraulic rodless pump. The connection structure also prevents loosening, thus improving the sealing performance of the flexible connection assembly for the hydraulic rodless pump.
[0010] Preferably, the connection structure includes a first flange, a second flange, a connecting pipe, fixing bolts, a placement groove, a nylon washer, a fixing nut, and a spring washer. The connecting pipe is disposed at one end of the fixing pipe, and a second flange is fixed to the outer wall of one end of the connecting pipe. A first flange is disposed at one end of each of the second flanges. Fixing bolts are uniformly inserted through the interiors of the first and second flanges. A fixing nut is threaded onto the outer side of the fixing bolt at the end of the first flange away from the second flange. A placement groove is formed at one end of each fixing nut, and a nylon washer is disposed inside each placement groove. A spring washer is fitted onto the outer wall of the fixing bolt at the end of the second flange away from the first flange.
[0011] Preferably, the inner side of the first flange is fixedly connected to the outer side of the fixed pipe, and the first flange and the second flange are fixedly connected by fixing bolts and fixing nuts. Under the action of the fixing bolts and fixing nuts, the first flange and the second flange are fixed to each other, thereby fixing the fixed pipe and the connecting pipe to each other.
[0012] Preferably, the nylon washer and the fixing nut form an engaging structure through a groove. When the fixing nut is tightened, the nylon washer generates additional friction under its action, preventing the fixing nut from loosening.
[0013] Preferably, the spring washer and the fixing bolt form a sliding structure. Under the action of the spring washer, additional elastic deformation can be provided to keep the fastening force stable, prevent the fixing bolt from loosening, and thus ensure the firmness and stability of the connection between the first flange and the second flange.
[0014] Preferably, the clamps are symmetrically distributed at both ends of the wire braided mesh, and the top view of the clamps is U-shaped. With the cooperation of the connecting nuts and clamps, the silicone rubber sleeve and the wire braided mesh are fixed to the outside of the metal bellows. The silicone rubber sleeve effectively isolates the metal bellows from the influence of external temperature, protecting it from damage in high or low temperature environments. It also reduces the erosion of the metal bellows by corrosive substances, thereby extending its service life.
[0015] Preferably, the clamp and the connecting plate are fixedly connected by connecting nuts. The steel wire mesh significantly enhances the compressive strength of the metal corrugated pipe, preventing deformation or breakage under external pressure or impact, while also increasing its tensile strength, thus ensuring the metal corrugated pipe remains stable in various environments.
[0016] The flexible connection assembly for a hydraulic rodless pumping pump provided by this utility model has the following advantages:
[0017] With the addition of a protective structure, the silicone rubber sleeve and steel wire braided mesh are fixed to the outside of the metal bellows through the cooperation of connecting nuts and clamps. The silicone rubber sleeve effectively isolates the metal bellows from the influence of external temperature, protecting it from damage caused by high or low temperature environments. It also reduces the erosion of the metal bellows by corrosive substances, thereby extending its service life. The steel wire braided mesh significantly enhances the pressure resistance of the metal bellows, preventing it from deforming or breaking under external pressure or impact. It also enhances the tensile strength of the bellows, ensuring its stability in various environments. This device facilitates enhanced pressure resistance and improves the applicability of the flexible connection assembly used in hydraulic rodless pumping pumps.
[0018] By incorporating a connection structure, when the fixing nut is tightened, the nylon washer generates additional frictional force to prevent the fixing nut from loosening. Under the action of the spring washer, additional elastic deformation is provided to keep the tightening force stable and prevent the fixing bolts from loosening. This ensures the firmness and stability of the connection between the first flange and the second flange, realizing the device's function of preventing loosening and thus improving the sealing performance of the flexible connection assembly used in the hydraulic rodless pump during use. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;
[0020] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;
[0021] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0022] Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;
[0023] Figure 5 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.
[0024] The following are the annotations in the figure: 1. Corrugated metal pipe; 2. Fixed pipe; 3. Connecting structure; 301. First flange; 302. Second flange; 303. Connecting pipe; 304. Fixing bolt; 305. Placement groove; 306. Nylon washer; 307. Fixing nut; 308. Spring washer; 4. Protective structure; 401. Silicone rubber sleeve; 402. Steel wire braided mesh; 403. Connecting plate; 404. Clamp; 405. Connecting nut. Detailed Implementation
[0025] 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.
[0026] Please see Figures 1-5 This utility model provides a flexible connection assembly for a hydraulic rodless pumping pump, including a metal bellows 1, with fixing pipes 2 fixed at both ends of the metal bellows 1, and a connecting structure 3 fixed at one end of each fixing pipe 2. The connecting structure 3 includes a first flange 301, a second flange 302, a connecting pipe 303, fixing bolts 304, a placement groove 305, a nylon washer 306, a fixing nut 307, and a spring washer 308. The connecting pipe 303 is disposed at one end of the fixing pipe 2, and a second flange 302 is fixed to the outer wall of one end of the connecting pipe 303. A first flange 301 is disposed at one end of each second flange 302. Fixing bolts 304 are evenly inserted through the interior of the first flange 301 and the second flange 302. The outer side of the fixing bolt 304 at the end of flange 301 away from the second flange 302 is threaded with a fixing nut 307. One end of the fixing nut 307 is provided with a placement groove 305. A nylon washer 306 is provided inside the placement groove 305. A spring washer 308 is fitted on the outer wall of the fixing bolt 304 at the end of the second flange 302 away from the first flange 301. The inner side of the first flange 301 is fixedly connected to the outer side of the fixing pipe 2. The first flange 301 and the second flange 302 are fixedly connected by the fixing bolt 304 and the fixing nut 307. The nylon washer 306 and the fixing nut 307 form an engaging structure through the placement groove 305. The spring washer 308 and the fixing bolt 304 form a sliding structure.
[0027] Reference Figure 2 and Figure 3 As shown, one end of the second flange 302 abuts against one end of the first flange 301. Under the action of the fixing bolt 304 and the fixing nut 307, the first flange 301 and the second flange 302 are fixed to each other, thereby fixing the fixing pipe 2 and the connecting pipe 303 to each other. When the fixing nut 307 is tightened, the nylon washer 306 generates additional friction under the action of the nylon washer 306, preventing the fixing nut 307 from loosening. Under the action of the spring washer 308, additional elastic deformation can be provided to keep the fastening force stable and prevent the fixing bolt 304 from loosening, thereby ensuring the firmness and stability of the connection between the first flange 301 and the second flange 302.
[0028] A protective structure 4 is provided on the outside of the metal corrugated pipe 1. The protective structure 4 includes a silicone rubber sleeve 401 sleeved on the outside of the metal corrugated pipe 1. A steel wire braided mesh 402 is provided on the outside of the silicone rubber sleeve 401. A clamp 404 is provided on the outside of both ends of the steel wire braided mesh 402. A connecting plate 403 is sleeved on both ends of one side of the clamp 404. A connecting nut 405 is threaded on the outer wall of the clamp 404 on one side of the connecting plate 403. The clamps 404 are symmetrically distributed at both ends of the steel wire braided mesh 402. The top view of the clamp 404 is U-shaped. The clamp 404 and the connecting plate 403 are fixedly connected by the connecting nut 405.
[0029] Reference Figure 1 and Figure 5 As shown, the silicone rubber sleeve 401 and the steel wire braided mesh 402 are sequentially placed on the outside of the metal corrugated pipe 1, and the connecting plate 403 is placed on the outside of the clamp 404. The connecting nut 405 is then fixed to the outside of the clamp 404 using a wrench. At this time, the silicone rubber sleeve 401 and the steel wire braided mesh 402 are fixed on the outside of the metal corrugated pipe 1. Under the action of the silicone rubber sleeve 401, the influence of external temperature on the metal corrugated pipe 1 can be effectively isolated, protecting the metal corrugated pipe 1 from damage by high or low temperature environments. At the same time, it can reduce the erosion of the metal corrugated pipe 1 by corrosive substances, thereby extending its service life. Under the action of the steel wire braided mesh 402, the compressive strength of the metal corrugated pipe 1 can be significantly enhanced, preventing it from deforming or breaking when subjected to external pressure or impact. At the same time, it enhances the tensile strength of the corrugated pipe, thereby ensuring that the metal corrugated pipe 1 can remain stable in various environments.
[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A flexible connection assembly for a hydraulic rodless pump, comprising a metal bellows (1); Its features are: Both ends of the metal corrugated pipe (1) are fixed with fixing pipes (2), and one end of each fixing pipe (2) is fixed with a connecting structure (3). The outer side of the metal bellows (1) is provided with a protective structure (4); The protective structure (4) includes a silicone rubber sleeve (401) fitted on the outside of the metal corrugated pipe (1). A steel wire braided mesh (402) is provided on the outside of the silicone rubber sleeve (401). A clamp (404) is provided on the outside of both ends of the steel wire braided mesh (402). A connecting plate (403) is fitted on both ends of one side of the clamp (404). A connecting nut (405) is threaded onto the outer wall of the clamp (404) on one side of the connecting plate (403).
2. The flexible connection assembly for a hydraulic rodless pumping pump according to claim 1, characterized in that: The connecting structure (3) includes a first flange (301), a second flange (302), a connecting pipe (303), a fixing bolt (304), a placement groove (305), a nylon washer (306), a fixing nut (307), and a spring washer (308). The connecting pipe (303) is located at one end of the fixing pipe (2). A second flange (302) is fixed to the outer wall of one end of the connecting pipe (303). A first flange (301) is located at one end of each second flange (302). The first flange (301) and the second flange (302) are connected to the first flange (303). Two flanges (302) have uniformly inserted fixing bolts (304) inside. The outer side of the fixing bolts (304) at the end of the first flange (301) away from the second flange (302) is threaded with fixing nuts (307). One end of each fixing nut (307) is provided with a placement groove (305). A nylon washer (306) is provided inside each placement groove (305). A spring washer (308) is fitted on the outer wall of the fixing bolts (304) at the end of the second flange (302) away from the first flange (301).
3. A flexible connection assembly for a hydraulic rodless pumping pump according to claim 2, characterized in that: The inner side of the first flange (301) is fixedly connected to the outer side of the fixed pipe (2), and the first flange (301) and the second flange (302) are fixedly connected by fixing bolts (304) and fixing nuts (307).
4. A flexible connection assembly for a hydraulic rodless pumping pump according to claim 2, characterized in that: The nylon washer (306) and the fixing nut (307) form an engaging structure through the placement groove (305).
5. A flexible connection assembly for a hydraulic rodless pumping pump according to claim 2, characterized in that: The spring washer (308) and the fixing bolt (304) constitute a sliding structure.
6. A flexible connection assembly for a hydraulic rodless pumping pump according to claim 1, characterized in that: The clamps (404) are symmetrically distributed at both ends of the wire mesh (402), and the top view of the clamps (404) is U-shaped.
7. A flexible connection assembly for a hydraulic rodless pumping pump according to claim 1, characterized in that: The clamp (404) and the connecting plate (403) are fixedly connected by a connecting nut (405).