Hose connecting device

Abstract

The utility model relates to the technical field of hose connecting devices, and discloses a quick hose connecting device which comprises a polyurethane resin hose, a hose nut and a hose connector, a port of the polyurethane resin hose extends to the front end of the hose nut, the hose connector is arranged in the rear end of the hose nut, and the front end of the hose connector is a conical head. A conical head at the front end of the hose connector extends into the rear end of the hose nut, and the top of the conical head extends into the polyurethane resin hose. Hose nuts and hose connectors can be manufactured on a large scale in advance, then a large number of hoses can be manufactured on site according to operation requirements, the lengths of the hoses are actually measured according to site equipment, waste is avoided, and operation is convenient and fast. According to the device, the polyurethane resin hose is pressed on the inner hole wall of the inner hole section of the hose nut through the hose connector, through a simple thread and nut matching structure, the large clamping force is achieved, and the sealing effect is guaranteed. The hose nut and the hose connector used in the device can be repeatedly detached and used.

Description

Technical Field

[0001] The utility model relates to the field of hose connecting devices, in particular to a hose connecting device. Background Art

[0002] In the metallurgical lubrication industry, many equipments have a large number of movable structural parts, so the lubricating oil pipes, air pipes, water pipes and other medium pipelines connected to these movable parts must be connected with hoses. The common practice is to use national standard GB9065 and other series of hoses. The disadvantage of this practice is that the hoses must be made in the factory in advance. If the length or other reasons need to be adjusted, they can only be returned to the factory for re-making. Adjustment cannot be made on site, which is costly and has a long manufacturing cycle. For some large equipment, sometimes hundreds or thousands of hoses are required, and the length of each hose may be different. If prefabricated hoses are used, the production cycle is long, and it is also difficult to distinguish hoses of similar sizes on site.

[0003] The patent application with publication number CN 202647010U discloses a crimping hose sealing joint, which includes a hose, a pipe joint and a crimping nut. The crimping nut is threadedly connected to the pipe joint. The inner hole of the hose is sleeved on the outer conical surface of the pipe joint. The inner conical surface of the crimping nut contacts the outer surface of the hose, and the inner conical surface squeezes the hose to produce elastic deformation, and forms a sealing surface between the outer conical surface of the pipe joint and the hose.

[0004] The prior art assembles the device for use by pressing the top end of the pipe joint and the end of the hose, the pressing nut is short, and the sealing and fastening properties of the device are not strong.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a hose connecting device, which can quickly manufacture hoses according to the length on site, thereby greatly improving production efficiency.

[0007] The technical solution adopted by the utility model is:

[0008] A hose quick connection device comprises a polyurethane resin hose, a hose nut and a hose connector. The polyurethane resin hose port extends to the front end of the hose nut, the rear end of the hose nut is the hose connector, the front end of the hose connector is a conical head, the conical head at the front end of the hose connector extends into the rear end of the hose nut, and the top of the conical head extends into the polyurethane resin hose.

[0009] By adopting the above structure, the device can be serialized, and hoses of different diameters correspond to hose nuts and hose connectors of different specifications, and the most suitable specifications can be selected according to actual requirements on site.

[0010] Preferably, the conical head at the front end of the hose connector is 15°, and a limiting ring is provided on the outer wall of the middle part of the hose connector.

[0011] By adopting the above structure, the polyurethane resin hose is pressed against the inner hole wall of the inner hole section of the hose nut by using a hose connector, and a large biting force is achieved through a simple threaded nut matching structure, thereby ensuring a sealing effect.

[0012] Preferably, the hose connector is provided with an external thread on the outside between the front conical head and the limiting ring in the middle.

[0013] By adopting the above structure, it is easy to connect with the hose nut.

[0014] Preferably, the rear end of the hose connector is a cylindrical hole.

[0015] By adopting the above structure, it is convenient to connect with the on-site pipeline.

[0016] Preferably, the front inner wall of the hose nut is provided with a front internal thread, which is threadedly connected to the polyurethane resin hose. The diameter of the front inner wall of the hose nut is slightly smaller than the diameter of the outer circle of the polyurethane resin hose. The rear inner wall is provided with a rear internal thread, which is threadedly connected to the front end of the hose connector.

[0017] By adopting the above structure, the front end internal thread of the hose nut contacts the outer surface of the resin hose, increasing the friction with the resin hose to ensure that the resin hose does not fall off, and the rear end internal thread is convenient for connection with the external thread of the hose connector.

[0018] Preferably, the middle portion of the hose nut is an inner hole section, and the diameter of the inner hole section is slightly larger than the diameter of the outer circle of the polyurethane resin hose.

[0019] By adopting the above structure, space is reserved in the inner hole section, and the hose is pressed in this inner hole section. The conical head of the hose connector will stretch the resin hose from the inside to the outside, and the resin hose will expand. The conical head presses the resin hose against the inner hole wall of the inner hole section to achieve the purpose of sealing.

[0020] Preferably, the diameter of the rear end of the hose nut is smaller than the diameter of the outer circle of the polyurethane resin hose, and the junction between the rear end of the hose nut and the inner hole section is an annular limiting step.

[0021] By adopting the above structure, it is convenient to limit the position of the polyurethane resin hose and to facilitate the operation and connection.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The utility model device is convenient for making hose nuts and hose connectors in large quantities in advance, and then a large number of hoses can be made on site according to operation requirements. The length of the hose is measured according to the on-site equipment, so there will be no waste and the operation is convenient.

[0024] 2. The utility model device uses a hose connector to press the polyurethane resin hose against the inner hole wall of the inner hole section of the hose nut. Through a simple threaded nut matching structure, a large biting force is achieved to ensure a sealing effect.

[0025] 3. The hose nut and hose connector used in the device of the utility model can be repeatedly disassembled and reused. Therefore, after the polyurethane resin hose is aged and damaged, only the polyurethane resin hose can be replaced and the device can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a structural diagram of the polyurethane resin hose and the hose nut of the utility model;

[0028] Figure 3 This is a structural diagram of the hose connector of the utility model;

[0029] Figure 4 For this utility model Figure 1 Schematic diagram at point a in the middle.

[0030] Among them: 1. polyurethane resin hose; 2. hose nut; 3. hose connector; 4. front end internal thread; 5. inner hole section; 6. external thread; 7. cylindrical hole; 8. conical head; 9. rear end internal thread; 10. limit step; 11. limit ring. DETAILED DESCRIPTION

[0031] like Figure 1-4 As shown, a hose quick connection device includes a polyurethane resin hose 1, a hose nut 2, and a hose connector 3. The port of the polyurethane resin hose 1 extends to the front end of the hose nut 2, and the hose connector 3 is inside the rear end of the hose nut 2. The front end of the hose connector 3 is a conical head 8. The conical head 8 at the front end of the hose connector 3 extends into the rear end of the hose nut 2, and the top of the conical head 8 extends into the polyurethane resin hose 1. The device is convenient for making hose nuts 2 and hose connectors 3 in large quantities in advance, and then a large number of hoses can be made on site according to operational requirements. The length of the hose is measured according to the on-site equipment, so there will be no waste, and the operation is convenient. The hose nut 2 and hose connector 3 used in the device can be repeatedly disassembled and reused. Therefore, after the polyurethane resin hose 1 is aged and damaged, only the polyurethane resin hose 1 can be replaced and reused.

[0032] The cone head 8 at the front end of the hose connector 3 is 15°, and a limit ring 11 is provided on the outer wall of the middle part of the hose connector 3. The hose connector 3 is provided with an external thread 6 between the cone head 8 at the front end and the limit ring 11 in the middle. The rear end of the hose connector 3 is a cylindrical hole 7. The device uses the hose connector 3 to press the polyurethane resin hose 1 against the inner hole wall of the inner hole section 5 of the hose nut 2, and through a simple threaded nut matching structure, a large biting force is achieved to ensure a sealing effect.

[0033] The front inner wall of the hose nut 2 is provided with a front inner thread 4, which is threadedly connected to the polyurethane resin hose 1. The diameter of the front inner wall of the hose nut 2 is slightly smaller than the diameter of the outer circle of the polyurethane resin hose 1. The rear inner wall is provided with a rear inner thread 9, which is threadedly connected to the front end of the hose connector 3. The middle part of the hose nut 2 is an inner hole section 5, and the diameter of the inner hole section 5 is slightly larger than the diameter of the outer circle of the polyurethane resin hose 1. The diameter of the rear end of the hose nut 2 is smaller than the diameter of the outer circle of the polyurethane resin hose 1, and the connection between the rear end of the hose nut 2 and the inner hole section 5 is an annular limiting step 10. The product of this device can be serialized, and hoses of different diameters correspond to hose nuts and hose connectors of different specifications. The most suitable specifications can be selected according to the actual requirements of the site. The structure of this device can be used in occasions with a variety of media such as water and gas. The cost of resin hoses is low, and the cost of mass production of hose nuts and hose connectors is controllable. A variety of materials can be used to meet different site requirements.

[0034] When the device is used and operated, according to the operation requirements, the end of the polyurethane resin hose 1 is spirally inserted into the front end of the hose nut 2 to the limiting step 10 behind the inner hole section 5, and then the conical head 8 at the front end of the hose connector 3 is inserted into the rear end of the hose nut 2 and into the inner hole of the polyurethane resin hose 1. The conical head 8 opens the polyurethane resin hose 1, and the polyurethane resin hose 1 is pressed against the conical head 8 under the pressure of the hose nut 2 to achieve the purpose of sealing. The structure of the conical head 8 is convenient for the centering of the polyurethane resin hose 1, and it will not be eccentric, so it can achieve a large biting force and ensure the sealing effect of the device.

[0035] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should be included in the protection scope determined by the claims of the present invention.

Claims

1. A hose connection device, comprising a polyurethane resin hose, a hose nut, and a hose connector, characterized in that: The polyurethane resin hose port extends to the front end of the hose nut, the rear end of the hose nut is a hose connector, the front end of the hose connector is a conical head, the conical head at the front end of the hose connector extends into the rear end of the hose nut, and the top of the conical head extends into the polyurethane resin hose.

2. A hose connection device according to claim 1, characterized in that: The conical head at the front end of the hose connector is 15 degrees, and a limiting ring is arranged on the outer wall of the middle part of the hose connector.

3. A hose connection device according to claim 2, characterized in that: The hose connector is provided with external threads on the outside between the front conical head and the limiting ring in the middle.

4. A hose connection device according to claim 1, characterized in that: The rear end of the hose connector is a cylindrical hole.

5. A hose connection device according to claim 1, characterized in that: The front inner wall of the hose nut is provided with a front internal thread, which is threadedly connected to the polyurethane resin hose. The diameter of the front inner wall of the hose nut is slightly smaller than the diameter of the outer circle of the polyurethane resin hose. The rear inner wall is provided with a rear internal thread, which is threadedly connected to the front end of the hose connector.

6. A hose connection device according to claim 1, characterized in that: The middle part of the hose nut is an inner hole section, and the diameter of the inner hole section is slightly larger than the diameter of the outer circle of the polyurethane resin hose.

7. A hose connection device according to claim 6, characterized in that: The diameter of the rear end of the hose nut is smaller than the diameter of the outer circle of the polyurethane resin hose, and the connection between the rear end of the hose nut and the inner hole section is an annular limiting step.

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