Acid and alkali resistant high-pressure rubber hose assembly

Abstract

The utility model discloses an acid and alkali resistant high-pressure rubber hose assembly which comprises a hose body, a corrosion resistant coating is arranged on the inner surface of the hose body, and a woven layer is arranged on the outer surface of the hose body. Buckling and pressing type connectors are mounted at the two ends of the pipe body; the outer portion of the pipe body is sleeved with the high-molecular polymer sleeve, the high-molecular polymer sleeve is shrunk on the surface in a heating mode, and the inner portion and the outer portion of the pipe body are both resistant to corrosion through the corrosion-resistant coating and the high-molecular polymer sleeve. The corrosion-resistant coating is arranged on the inner surface of the pipe body, so that liquid circulating in the pipe body cannot corrode the interior of the pipe body; meanwhile, the braid layer is arranged on the outer surface of the pipe body, the pipe body is protected through the braid layer, the braid layer is sleeved with the high-molecular polymer sleeve, and the high-molecular polymer sleeve has excellent physical performance and chemical performance, not only has high strength and high toughness, but also has good abrasion resistance and low friction coefficient.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure rubber hoses, in particular to a high-pressure rubber hose assembly resistant to acid and alkali. Background Technique

[0002] In many industries of mechanical production, such as chemical industry, metallurgy, electroplating and other industries, high-pressure rubber hose assemblies are widely used. In the prior art, a Chinese patent application with the patent publication number CN212537075U discloses a self-locking high-pressure rubber hose assembly. By fixedly arranging a chute and a limiting block on the female interface, and fixedly arranging a convex block on the male interface, the convex block is inserted into the chute and rotated to the limiting block, so as to achieve the effect of tightly connecting the male interface and the female interface. By arranging a first handshake at one end of the first connecting rod, and moving the first handshake up and down, the end of the first connecting rod in contact with the first hook is driven by the first rotating shaft, realizing the self-locking function between the male interface and the female interface, further strengthening the fastening between the two. By arranging a gasket in the female interface, preventing the leakage of gas or liquid. By arranging the rubber hose with an outer layer, an inner rubber layer and a steel braided skeleton, the wear resistance and pressure resistance of the rubber hose are increased. By evenly arranging six hooks on the male interface, ensuring the balanced pulling force of the six connecting rods on each part of the male interface.

[0003] The high-pressure rubber hose assembly provided by the above patent is mainly convenient for self-locking with adjacent joints, ensuring the stable connection between the high-pressure rubber hose and adjacent joints. In actual use, the working environment of some high-pressure rubber hoses is harsh, and the surface of the hose body is easily contaminated with some highly corrosive acid or alkali solutions during use. However, the outer surfaces of existing high-pressure rubber hoses are mostly not resistant to acid and alkali corrosion, which easily causes damage to the high-pressure rubber hose and leads to a significant reduction in the service life of the high-pressure rubber hose. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-pressure rubber hose assembly resistant to acid and alkali, aiming to improve the problem that the outer surfaces of existing high-pressure rubber hoses are mostly not resistant to acid and alkali corrosion, which easily causes damage to the high-pressure rubber hose and leads to a significant reduction in the service life of the high-pressure rubber hose.

[0005] The utility model is realized as follows:

[0006] A high-pressure rubber hose assembly resistant to acid and alkali includes a hose body. The inner surface of the hose body is provided with a corrosion-resistant coating, and the outer surface of the hose body is provided with a braided layer. Both ends of the hose body are installed with crimped joints. A high molecular polymer sleeve is sleeved outside the hose body, and the high molecular polymer sleeve shrinks on the surface by heating. Through the corrosion-resistant coating and the high molecular polymer sleeve, the inside and outside of the hose body are both corrosion-resistant.

[0007] Preferably, swivel joints are provided at both ends of the hose body, and the swivel joints are threadedly connected to the crimped joints.

[0008] Preferably, the pipe body includes an inner rubber layer, an outer wire mesh sleeve is sleeved on the outer side of the inner rubber layer, and a middle rubber layer is arranged on the outer side of the wire mesh sleeve; an asbestos layer is arranged on the outer side of the middle rubber layer, an outer rubber layer is arranged on the outer side of the asbestos layer, and the braided layer is sleeved on the outer rubber layer.

[0009] Preferably, the crimping joint includes a connecting cap, a connecting pipe and a connecting adapter; both the connecting cap and the connecting adapter are rotatably connected to the connecting pipe, and the opening directions of the connecting cap and the connecting adapter are opposite.

[0010] Preferably, a socket hole is arranged in the middle of one end of the connecting cap facing the connecting pipe, and the socket hole is sleeved on the connecting pipe.

[0011] Preferably, an insertion pipe is arranged at one end of the connecting pipe facing the pipe body, and a plurality of sealing convex rings are evenly arranged on the side surface of the insertion pipe; a first limiting ring is arranged at the connection between the insertion pipe and the connecting pipe, and the first limiting ring is used for limiting with the connecting cap; a second limiting ring is arranged at the end of the connecting pipe away from the pipe body, a sealing gasket is arranged on the side of the second limiting ring facing the outside, and the second limiting ring is used for limiting with the connecting adapter.

[0012] Preferably, it further includes a hanging plate, two ear plates are symmetrically arranged on the side surface of the connecting adapter, a pin shaft hole is arranged in the middle of the ear plate, and the hanging plate is rotatably connected to the ear plate.

[0013] Preferably, a connecting shaft is arranged at one end of the hanging plate, and the connecting shaft is rotatably connected to the pin shaft hole; a hanging interface is arranged at the other end of the hanging plate, and a lifting plate is arranged on the hanging plate, and the lifting plate is used for rotating the hanging plate.

[0014] Preferably, it further includes a pressing screw. A threaded hole is arranged at the end of the hanging plate not connected to the connecting adapter, the threaded hole is aligned with the hanging interface, and the pressing screw is threadedly connected to the threaded hole. A driving joint is arranged at the end of the pressing screw facing the outside, and a non-circular groove is arranged in the middle of the driving joint.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The utility model ensures that the liquid flowing inside the pipe body does not corrode the interior of the pipe body by providing a corrosion-resistant coating on the inner surface of the pipe body. At the same time, a braided layer is provided on the outer surface of the pipe body to protect the pipe body. A polymer sleeve is sleeved outside the braided layer. By heating the polymer sleeve, the polymer sleeve shrinks on the high-pressure rubber hose. The polymer sleeve has excellent physical and chemical properties, not only high strength and high toughness, but also good wear resistance and low friction coefficient. The excellent chemical properties make it not easily eroded by acid and alkali substances, which can play a good protective role for the rubber hose and will not interfere with the softness of the rubber hose.

[0017] 2. The utility model symmetrically provides two hanging plates on the adapter cap, and the joints connecting the crimped joint and the crimping joint are hung together through the hanging plates, so as to prevent the crimped joint from easily detaching from the joint connected thereto.

[0018] 3. The utility model provides a pressing screw at the end of the hanging plate, and the pressing screw abuts against the joint connected to the crimped joint, thereby ensuring sufficient stability between the crimped joint and the connected joint. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the whole utility model;

[0020] Figure 2 is a schematic structural diagram of the pipe body of the utility model;

[0021] Figure 3 is a schematic structural diagram of the sectional stratification of the pipe body of the utility model;

[0022] Figure 4 is a schematic structural diagram of the crimped joint of the utility model;

[0023] Figure 5 is a schematic structural diagram of the hanging plate of the utility model;

[0024] Figure 6 is a schematic structural diagram of the pressing screw of the utility model.

[0025] In the figure: 1. Pipe body; 10. Adapter; 11. Inner rubber layer; 12. Steel wire mesh sleeve; 13. Middle rubber layer; 14. Asbestos layer; 15. Outer rubber layer; 16. Braided layer; 17. Corrosion-resistant coating; 2. Compression joint; 21. Connection cap; 211. Socket hole; 22. Connection pipe; 221. Insertion pipe; 222. First limit ring; 223. Second limit ring; 224. Gasket; 23. Adapter cap; 231. Ear plate; 232. Pin hole; 3. High molecular polymer sleeve; 4. Hanging plate; 41. Adapter shaft; 42. Hanging interface; 43. Lifting plate; 44. Threaded hole; 5. Compression screw; 51. Drive joint. Detailed implementation mode

[0026] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The following will be further described in conjunction with the drawings and specific embodiments:

[0028] Embodiment 1

[0029] As Figure 1 and Figure 3 shown, an acid and alkali resistant high-pressure hose assembly includes a pipe body 1. The inner surface of the pipe body 1 is provided with a corrosion-resistant coating 17, which is coated with chlorinated rubber paint and has good acid and alkali corrosion resistance, and can well protect the pipe body 1. And the outer surface of the pipe body 1 is provided with a braided layer 16; the braided layer 16 is convenient to provide a layer of protection for the outer surface of the pipe body 1 to ensure the stable use of the pipe body 1. Both ends of the pipe body 1 are installed with compression joints 2; the compression joints 2 are convenient to cooperate with the pipe body 1, so as to facilitate the connection of the pipe body 1 with other pipes or joints. A high molecular polymer sleeve 3 is sleeved outside the pipe body 1, and the high molecular polymer sleeve 3 is used to protect the periphery of the pipe body 1, and the corrosion resistance of the whole pipe body 1 is improved through the corrosion-resistant characteristics of the high molecular polymer. The high molecular polymer sleeve 3 shrinks on the surface by heating. Through the corrosion-resistant coating 17 and the high molecular polymer sleeve 3, the inner and outer surfaces of the pipe body 1 have corrosion resistance.

[0030] As Figure 2 and Figure 3As shown in the figure, swivel joints 10 are provided at both ends of the pipe body 1. The swivel joints 10 are threadedly connected to the crimp-type joints 2, facilitating the disassembly, assembly, and replacement of the crimp-type joints 2. The pipe body 1 includes an inner rubber layer 11, which is used to ensure a certain buffering property inside the pipe body 1. A steel wire mesh sleeve 12 is sleeved outside the inner rubber layer 11, and the steel wire mesh sleeve 12 is used to enhance the strength of the pipe body 1. A middle rubber layer 13 is provided outside the steel wire mesh sleeve 12; the middle rubber layer 13 is used to enable the pipe body 1 to have a good buffering effect. An asbestos layer 14 is provided outside the middle rubber layer 13, and the asbestos layer 14 can make the pipe body 1 have good flame retardancy. An outer rubber layer 15 is provided outside the asbestos layer 14, and the outer rubber layer 15 is used to protect the pipe body 1. A braided layer 16 is sleeved on the outer rubber layer 15.

[0031] As Figure 4 shown in the figure, the crimp-type joint 2 includes a connection cap 21, a connection pipe 22, and a transfer cap 23; both the connection cap 21 and the transfer cap 23 are rotatably connected to the connection pipe 22, and the opening directions of the connection cap 21 and the transfer cap 23 are opposite; the connection cap 21 is used to be connected to the swivel joint 10, and the transfer cap 23 is used to be connected to the pipe body 1 or other joints. In the middle of one end of the connection cap 21 facing the connection pipe 22, a socket hole 211 is provided, and the socket hole 211 is sleeved on the connection pipe 22, facilitating the rotational connection between the connection cap 21 and the connection pipe 22. At one end of the connection pipe 22 facing the pipe body 1, an insertion pipe 221 is provided, and a plurality of sealing convex rings are evenly arranged on the side surface of the insertion pipe 221; this structure facilitates the insertion of the insertion pipe 221 into the pipe body 1 and ensures good sealing between the insertion pipe 221 and the pipe body 1. At the connection between the insertion pipe 221 and the connection pipe 22, a first limiting ring 222 is provided, and the first limiting ring 222 is used for limiting with the connection cap 21; at the end of the connection pipe 22 far from the pipe body 1, a second limiting ring 223 is provided, and a sealing gasket 224 is provided on the side of the second limiting ring 223 facing the outside. The second limiting ring 223 is used for limiting with the transfer cap 23, and the sealing gasket 224 facilitates good sealing between the connection pipe 22 and other pipes or joints.

[0032] Embodiment 2

[0033] As Figure 1 and Figure 4 shown in the figure, in order to ensure that the high-pressure hose is not easily detached from other components or joints. A hanging plate 4 is further included. Two ear plates 231 are symmetrically provided on the side surface of the transfer cap 23, and a pin shaft hole 232 is provided in the middle of the ear plates 231. The hanging plate 4 is rotatably connected to the ear plates 231; this structure facilitates the rotational connection between the hanging plate 4 and the transfer cap 23 and facilitates the connection between the hanging plate 4 and an external joint.

[0034] As Figure 5As shown in the figure, one end of the hanging plate 4 is provided with a transfer shaft 41, and the transfer shaft 41 is rotatably connected to the pin shaft hole 232; the transfer shaft 41 facilitates the rotational connection between the hanging plate 4 and the transfer cap 23. The other end of the hanging plate 4 is provided with a hanging interface 42, and the hanging interface 42 facilitates the connection between the hanging plate 4 and an external joint. Moreover, a lifting plate 43 is provided on the hanging plate 4, and the lifting plate 43 is used to rotate the hanging plate 4.

[0035] Embodiment 3

[0036] As Figure 1 and Figure 4 As shown in the figure, in order to ensure that the high-pressure hose can be stably connected to other components or joints without separation, it further includes a compression screw 5. One end of the hanging plate 4 that is not connected to the transfer cap 23 is provided with a threaded hole 44. The threaded hole 44 is aligned with the hanging interface 42, and the compression screw 5 is threadedly connected to the threaded hole 44. In this way, a protrusion can be provided on other components or joints. The hanging interface 42 is hung on the protrusion, and the compression screw 5 is made to abut against the protrusion, thereby ensuring that the high-pressure hose is stably connected to other components or joints and will not become detached or loose. One end of the compression screw 5 facing the outside is provided with a drive joint 51, and a non-circular groove is provided in the middle of the drive joint 51. This structure facilitates the use of a special tool to turn the compression screw 5 and prevents non-staff from randomly turning the compression screw 5.

[0037] Working principle: During use, the polymer sleeve 3 is sleeved on the entire high-pressure hose, and a hot air blower is used to heat the polymer sleeve 3 so that the polymer sleeve 3 shrinks on the high-pressure hose. After that, corresponding protrusions are provided on the joints connected to the high-pressure hose, or a joint with a protrusion is selected to match the high-pressure hose; then the end of the high-pressure hose is connected to the corresponding joint, and the hanging interface 42 of the hanging plate 4 is hung on the corresponding joint protrusion, and then the compression screw 5 is tightened so that the compression screw 5 abuts against the protrusion, ensuring that the high-pressure hose is stably connected to the corresponding joint protrusion.

[0038] In summary, compared with the prior art, in the present application, a corrosion-resistant coating 17 is provided on the inner surface of the pipe body 1 to ensure that the liquid flowing inside the pipe body 1 does not corrode the inside of the pipe body 1; at the same time, a braided layer 16 is provided on the outer surface of the pipe body 1 to protect the pipe body 1 through the braided layer 16. A polymer sleeve 3 is sleeved outside the braided layer 16. By heating the polymer sleeve 3, the polymer sleeve 3 shrinks on the high-pressure hose. The polymer sleeve 3 has excellent physical and chemical properties, not only having high strength and high toughness but also having good wear resistance and low friction coefficient. Its excellent chemical properties make it not easily eroded by acid and alkali substances, which can play a good protective role for the hose and will not interfere with the softness of the hose.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An acid and alkali resistant high-pressure hose assembly, including a hose body (1), characterized in that, The inner surface of the pipe body (1) is provided with a corrosion-resistant coating (17), and the outer surface of the pipe body (1) is provided with a braided layer (16); both ends of the pipe body (1) are installed with crimped joints (2), and a polymer sleeve (3) is sleeved outside the pipe body (1).

2. The acid and alkali resistant high-pressure hose assembly according to claim 1, characterized in that, Both ends of the pipe body (1) are provided with adapter joints (10), and the adapter joints (10) are threadedly connected to the crimped joints (2).

3. The acid and alkali resistant high-pressure hose assembly according to claim 2, wherein The pipe body (1) includes an inner rubber layer (11), a steel wire mesh sleeve (12) is sleeved outside the inner rubber layer (11), and a middle rubber layer (13) is provided outside the steel wire mesh sleeve (12); an asbestos layer (14) is provided outside the middle rubber layer (13), an outer rubber layer (15) is provided outside the asbestos layer (14), and the braided layer (16) is sleeved on the outer rubber layer (15).

4. A high-pressure hose assembly resistant to acid and alkali according to claim 1, characterized in that, The crimped joint (2) includes a connecting cap (21), a connecting pipe (22) and an adapter cap (23); both the connecting cap (21) and the adapter cap (23) are rotatably connected to the connecting pipe (22), and the opening directions of the connecting cap (21) and the adapter cap (23) are opposite.

5. A high-pressure hose assembly resistant to acids and alkalis according to claim 4, characterized in that, In the middle of one end of the connecting cap (21) facing the connecting pipe (22), a socket hole (211) is provided, and the socket hole (211) is sleeved on the connecting pipe (22).

6. The high-pressure hose assembly resistant to acid and alkali according to claim 4, characterized in that, One end of the connecting pipe (22) facing the pipe body (1) is provided with an inserted connecting pipe (221), and a plurality of sealing convex rings are evenly arranged on the side surface of the inserted connecting pipe (221); a first limiting ring (222) is provided at the junction of the inserted connecting pipe (221) and the connecting pipe (22), and the first limiting ring (222) is used for limiting with the connecting cap (21); a second limiting ring (223) is provided at the end of the connecting pipe (22) away from the pipe body (1), and a sealing gasket (224) is provided on the side of the second limiting ring (223) facing the outside, and the second limiting ring (223) is used for limiting with the adapter cap (23).

7. An acid and alkali resistant high-pressure hose assembly according to claim 4, characterized in that, It further includes a hanging plate (4), two ear plates (231) are symmetrically provided on the side surface of the adapter cap (23), a pin shaft hole (232) is provided in the middle of the ear plate (231), and the hanging plate (4) is rotatably connected to the ear plate (231).

8. A high-pressure hose assembly resistant to acids and alkalis according to claim 7, characterized in that, One end of the hanging plate (4) is provided with a transfer shaft (41), and the transfer shaft (41) is rotatably connected to the pin shaft hole (232); the other end of the hanging plate (4) is provided with a hanging interface (42), and a lifting plate (43) is provided on the hanging plate (4), and the lifting plate (43) is used for rotating the hanging plate (4).

9. The high-pressure hose assembly resistant to acid and alkali according to claim 7, characterized in that, It further includes a pressing screw (5), a threaded hole (44) is provided at one end of the hanging plate (4) not connected to the adapter cap (23), the threaded hole (44) is arranged opposite to the hanging interface (42), and the pressing screw (5) is threadedly connected to the threaded hole (44), a driving joint (51) is provided at the end of the pressing screw (5) facing the outside, and a non-circular groove is provided in the middle of the driving joint (51).

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