Pressure-adjustable quick-connection hose
By designing a pressure-adjustable quick-connect hose and utilizing components such as a double check valve and an isolation valve, the problems of existing quick-connect hoses being unable to adjust pressure and having unstable connections have been solved. This has enabled the adjustment of hydraulic pressure and stable connection of pipeline components, improving the sealing performance and connection stability of the equipment.
Patent Information
- Application Number
- CN202520484844.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing quick-connect hoses cannot adjust the water pressure, resulting in excessively low or high pressure inside the equipment, affecting sealing and connection stability, and easily leading to leakage and loosening.
An adjustable pressure quick-connect hose was designed. Through components such as a double check valve, an isolation valve, and a reinforced clamping frame, it can achieve the adjustment of hydraulic pressure and the stable connection of pipeline components. This includes the combined use of structures such as rubber cable ties, double-ear caps, and threaded sleeves.
It enables the adjustment of hydraulic pressure, improves the sealing of the equipment and the connection stability of pipeline components, prevents loosening and detachment, and enhances the reliability of the equipment.
Smart Images

Figure CN223854891U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of pipe connectors, and relates to a quick-connect hose, particularly a pressure-adjustable quick-connect hose. Background Technology
[0002] Quick-connect hoses are hoses used for quick connection of pipelines. They usually consist of two parts: the hose body and the quick connector. They are used in auxiliary devices of metal mold-related machinery such as pneumatic and hydraulic tools, cylinders, and hydraulic cylinders to enable quick connection or disconnection between equipment.
[0003] For example, Chinese patent literature discloses a stainless steel inverted quick-connect hose [Application No.: 202420877433.4; Authorization Announcement No.: CN222103072U], which includes a connecting hose, a second quick-connect mechanism on the left side of the connecting hose, a first connecting pipe connected to the right side of the connecting hose, a first quick-connect mechanism on the right side of the first connecting pipe, the first quick-connect mechanism including a first rubber sleeve, a plug pipe penetrating through the right side of the first rubber sleeve, and a second quick-connect mechanism including a first connecting pipe, the right side of the first connecting pipe being connected to the connecting hose.
[0004] The aforementioned stainless steel inverted quick-connect hose offers good splicing convenience and sealing performance, resulting in excellent leak-proof performance. However, this stainless steel inverted quick-connect hose lacks the function of regulating the pressure inside the equipment. During use, if the pressure is too low, it can easily lead to poor water flow. At the same time, due to the slow water flow, impurities and microorganisms in the water are more likely to settle and proliferate. If the pressure is too high, it will cause accelerated wear of the seals, leading to a decrease in sealing performance and leakage. Furthermore, it cannot increase the stability of the connection between pipe fittings during use. Over a long period of use, the connection between pipe components is prone to loosening due to water pressure, which can easily cause the pipe components to detach from the equipment. Summary of the Invention
[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a pressure-adjustable quick-connect hose that offers good adjustment of water pressure and increases the stability of pipe component connections.
[0006] The objective of this utility model can be achieved through the following technical solution: A pressure-adjustable quick-connect hose includes a connecting hose with double-ear caps at both ends. A double check valve is movably fitted onto the surface of the left double-ear cap, and an isolation valve is movably fitted onto the surface of the right double-ear cap. Both the double check valve and the isolation valve have a filter mechanism inside their cavities. A reinforcing mechanism is provided on the opposite side of the isolation valve from the double check valve. A threaded sleeve is threaded onto the opposite side of the isolation valve from the double check valve. A connecting sleeve is movably installed inside the threaded sleeve. The reinforcing mechanism includes a reinforcing frame, which is movably fitted onto the surfaces of the double check valve and the isolation valve. The filter mechanism includes mounting grooves, which are respectively formed inside the cavities of the double check valve and the isolation valve. In practical applications, the double-ear caps can be quickly inserted into the cavities of the double check valve and the isolation valve to connect the connecting hose to them.
[0007] This pressure-adjustable quick-connect hose, through the combination of rubber cable ties, double check valves, connecting valves, nuts, isolation valves, threaded sleeves, reinforcing clips, limiting rubber blocks, sealing sleeves, fitting plates, and fixing bolts, increases the stability of the connection between the pipeline components and the double check valves and isolation valves. Furthermore, by fitting the reinforcing clips onto the threaded sleeves, the user can enable the reinforcing clips to clamp and secure the pipeline components, thereby increasing the stability of the connection between the equipment and machinery and preventing the pipeline components from loosening or falling off.
[0008] In the aforementioned pressure-adjustable quick-connect hose, both the isolation valve and the double check valve have movably installed caps on their opposite sides. The number of caps and threaded sleeves is several. In practical applications, the caps can be used to block the equipment, preventing foreign objects from entering.
[0009] In the aforementioned pressure-adjustable quick-connect hose, both the front and rear sides of the reinforcing frame are fixedly connected to bonding plates, and a fixing bolt is installed through the top of the bonding plate. In practical applications, the bonding plates facilitate the bonding of the two reinforcing frames and also allow the fixing bolts to limit and fix the reinforcing frames.
[0010] In the aforementioned pressure-adjustable quick-connect hose, a limiting rubber block is fixedly installed inside the reinforcing frame, and a sealing sleeve is fixedly installed on the inner wall of the reinforcing frame. In practical applications, the limiting rubber block can increase the stability of the connection between the pipe component and the equipment, preventing the pipe component from shaking.
[0011] In the aforementioned pressure-adjustable quick-connect hose, both the isolation valve and the double check valve have filter frames movably installed inside their cavities. A mounting block is fixedly connected to the surface of the filter frame, and the mounting block is movably installed within the cavity of the mounting groove. In practical applications, the mounting groove and the mounting block cooperate to quickly install the filter frame into the equipment.
[0012] In the aforementioned pressure-adjustable quick-connect hose, both the top of the double check valve and the isolation valve are fixed with nuts by bolts. The bottom of the double check valve is connected to a connecting valve. Rubber straps are movably fitted onto the surfaces of both the double check valve and the isolation valve. In practical applications, the nuts facilitate the operation of the double check valve and the isolation valve by the operator.
[0013] In the aforementioned pressure-adjustable quick-connect hose, two rubber gaskets are movably fitted onto the surface of the double-ear cap. In practical applications, these rubber gaskets enhance the sealing performance between the double-ear cap and the double check valve / straight-through ball valve and isolation valve.
[0014] Compared with existing technologies, the advantages of this pressure-adjustable quick-connect hose are: when water is flowing, the user can adjust the pressure of the equipment to avoid excessive or insufficient pressure inside the equipment during water flow, and it can also increase the stability of the connection between the pipe components and the equipment to prevent the pipe components from falling off the equipment at will. Attached Figure Description
[0015] Figure 1 This is a cross-sectional view of the structure of this utility model.
[0016] Figure 2 This utility model Figure 1 An enlarged diagram of A in the diagram.
[0017] Figure 3 This is a schematic diagram of the main structure of this utility model.
[0018] Figure 4 This is a left-side view of a partial structure of the rubber gasket of this utility model.
[0019] Figure 5 This is a left-side view of a partial structure of the rubber cable tie of this utility model.
[0020] Figure 6 This is a cross-sectional view of a partial structure of the plug cap of this utility model.
[0021] In the diagram, 1. Connecting hose; 2. Double-ear cap; 3. Rubber cable tie; 4. Double check valve; 5. Connecting valve; 6. Nut; 7. Isolation valve; 8. Filter mechanism; 9. Reinforcing mechanism; 10. Connecting sleeve; 11. Threaded sleeve; 12. Reinforcing frame; 13. Limiting rubber block; 14. Mounting block; 15. Filter frame; 16. Mounting groove; 17. Sealing sleeve; 18. Adhesive plate; 19. Fixing bolt; 20. Rubber gasket; 21. Plug cap. Detailed Implementation
[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this pressure-adjustable quick-connect hose includes a connecting hose 1, with double-ear caps 2 connected to both ends of the connecting hose 1. A double check valve 4 is movably fitted onto the surface of the left double-ear cap 2, and an isolation valve 7 is movably fitted onto the surface of the right double-ear cap 2. Both the double check valve 4 and the isolation valve 7 have a filter mechanism 8 installed in their inner cavities. A reinforcing mechanism 9 is installed on the opposite side of the isolation valve 7 from the double check valve 4. A threaded sleeve 11 is threaded onto the opposite side of the isolation valve 7 from the double check valve 4. A connecting sleeve 10 is movably installed in the inner cavity of the threaded sleeve 11. The reinforcing mechanism 9 includes a reinforcing frame 12, which is movably fitted onto the surfaces of the double check valve 4 and the isolation valve 7. The filter mechanism 8 includes a mounting groove 16, which is opened in the inner cavities of the double check valve 4 and the isolation valve 7.
[0024] To elaborate further, both the isolation valve 7 and the double check valve 4 have movably installed caps 21 on the opposite side, and there are several caps 21 and threaded sleeves 11. The front and rear sides of the reinforcing frame 12 are fixedly connected with bonding plates 18, and the top of the bonding plates 18 is fitted with fixing bolts 19.
[0025] A limiting rubber block 13 is fixedly installed in the inner cavity of the reinforcing frame 12, and a sealing sleeve 17 is fixedly installed on the inner wall of the reinforcing frame 12. Filter frames 15 are movably installed in the inner cavities of both the isolation valve 7 and the double check valve 4. A mounting block 14 is fixedly connected to the surface of the filter frame 15, and the mounting block 14 is movably installed in the inner cavity of the mounting groove 16.
[0026] Both the double check valve 4 and the isolation valve 7 are bolted to the top with nuts 6. The bottom of the double check valve 4 is connected to a connecting valve 5. Both the double check valve 4 and the isolation valve 7 are movably fitted with rubber straps 3. Two rubber gaskets 20 are movably fitted on the surface of the double ear cap 2.
[0027] In actual manufacturing, the user first removes the plug cap 21 from the equipment for use. Before use, the user connects the double check valve 4 and the isolation valve 7 to the connecting pipe on the mechanical equipment through the connecting sleeve 10. After connection, the user tightens the threaded sleeve 11 to increase the stability of the connection between the connecting pipe and the double check valve 4 and the isolation valve 7. At the same time, the user puts the reinforcing frame 12 on the threaded sleeve 11 so that the reinforcing frame 12 can drive the limiting rubber block 13 and the reinforcing frame 12 to clamp and fix the connecting pipe, thereby increasing the stability of the connection between the equipment and the mechanical equipment and preventing the pipe components from loosening. When the equipment is circulating water, the filter frame 15 will filter the equipment to prevent impurities from entering the equipment during water circulation. At the same time, the user can also operate the double check valve 4 and the isolation valve 7 through the nut 6 to adjust the pressure of the equipment.
[0028] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.
Claims
1. A pressure adjustable quick coupling hose comprising a connecting hose (1), characterized in that: The both ends of the connecting hose (1) are communicated with double-ear caps (2), the surface of the left double-ear cap (2) movably sheaths a double-checking straight-through ball valve (4), the surface of the right double-ear cap (2) movably sheaths an isolation valve (7), the inner cavities of the double-checking straight-through ball valve (4) and the isolation valve (7) are provided with filter mechanisms (8), the sides opposite to the double-checking straight-through ball valve (4) of the isolation valve (7) are provided with reinforcing mechanisms (9), the inner cavities of the threaded sleeves (11) movably sheath connecting sleeves (10), the reinforcing mechanisms (9) comprise reinforcing clamping frames (12), the reinforcing clamping frames (12) movably sheath the surfaces of the double-checking straight-through ball valve (4) and the isolation valve (7) respectively, the filter mechanisms (8) comprise mounting grooves (16), the mounting grooves (16) are formed in the inner cavities of the double-checking straight-through ball valve (4) and the isolation valve (7) respectively.
2. The pressure adjustable quick connect hose of claim 1, wherein, The sides opposite to the double-checking straight-through ball valve (4) of the isolation valve (7) movably sheath plugs (21), the numbers of the plugs (21) and the threaded sleeves (11) are several.
3. The pressure adjustable quick connect hose of claim 1, wherein, The front and back sides of the reinforcing clamping frame (12) are fixedly connected with abutting plates (18), the top of the abutting plate (18) penetrates and is mounted with a fixing bolt (19).
4. The pressure adjustable quick connect hose of claim 3, wherein, The inner cavity of the reinforcing clamping frame (12) is fixedly mounted with a limiting rubber block (13), the inner wall of the reinforcing clamping frame (12) is fixedly mounted with a sealing sleeve (17).
5. The pressure adjustable quick connect hose of claim 2, wherein, The inner cavities of the isolation valve (7) and the double-checking straight-through ball valve (4) movably sheath filter frames (15), the surface of the filter frame (15) is fixedly connected with a mounting clamping block (14), the mounting clamping block (14) movably sheaths the inner cavity of the mounting groove (16).
6. The pressure adjustable quick connect hose of claim 1, wherein, The top of the double-checking straight-through ball valve (4) and the isolation valve (7) is fixedly mounted with a nut (6) through a bolt, the bottom of the double-checking straight-through ball valve (4) is communicated with a connecting valve (5), the surfaces of the double-checking straight-through ball valve (4) and the isolation valve (7) movably sheath rubber ties (3).
7. The pressure adjustable quick connect hose of claim 1, wherein, The surface of the double-ear cap (2) movably sheaths rubber gaskets (20), the number of the rubber gaskets (20) is two.
Citation Information
Patent Citations
Stainless steel upside-down quick-connection hose
CN222103072U