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CN-122014929-A - Hose assembly, hose and preparation method

CN122014929ACN 122014929 ACN122014929 ACN 122014929ACN-122014929-A

Abstract

The invention discloses a hose assembly, a hose and a preparation method, and relates to the technical field of hose connection, comprising a hose body and a connector which are coaxially arranged; the hose comprises a connector piece, an inner core and a sleeve, wherein the connector piece is provided with a connector through hole, a first end of the inner core is communicated with the connector through hole, a second end of the inner core is sleeved in the sleeve, a sleeve convex groove, a sleeve convex and a sleeve boss are sequentially arranged on the inner peripheral surface of the sleeve along a first direction, an inner core groove, a limit convex, a first inner core convex and a second inner core convex are sequentially arranged on the outer peripheral surface of the inner core along the first direction, when a hose body is sleeved between the outer peripheral surface of the second end of the inner core and the inner peripheral surface of the sleeve, the sleeve convex groove is clamped in the inner core groove, the sleeve convex and the first inner core convex are in staggered engagement, and the sleeve boss and the second inner core convex are in alignment engagement.

Inventors

  • ZHANG ZHUOHAO
  • LI XINLU
  • ZHAO HONGLIANG
  • ZHANG YONG
  • ZHAO HUAYU
  • LIU XIAOYUE
  • ZHAO SHUWEN
  • Wang Xiejingyi

Assignees

  • 漯河利通液压科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (12)

  1. 1. A hose assembly, characterized by comprising a hose body (10) and a connector (20) arranged coaxially; The connector (20) comprises a connector piece (21), an inner core (22) and a sleeve (23); The connector piece (21) is provided with a connector through hole (211), a first end of the inner core (22) is communicated with the connector through hole (211), a second end of the inner core (22) is sleeved in the sleeve (23), and the extending direction from the first end of the inner core (22) to the second end of the inner core (22) is a first direction; The inner peripheral surface of the sleeve (23) is sequentially provided with a sleeve convex groove (231), a sleeve convex (232) and a sleeve convex table (233) along the first direction, and the outer peripheral surface of the inner core (22) is sequentially provided with an inner core groove (221), a limiting convex (222), a first inner core convex (223) and a second inner core convex (224) along the first direction; When the hose body (10) is sleeved between the outer peripheral surface of the second end of the inner core (22) and the inner peripheral surface of the sleeve (23), the sleeve convex groove (231) is clamped into the inner core groove (221), the sleeve convex (232) and the first inner core convex (223) are in staggered engagement, the sleeve convex (233) and the second inner core convex (224) are in aligned engagement, and the side surface, away from the inner core groove (221), of the limit convex (222) is used for abutting against the end surface of the hose body (10) so as to limit the position of the hose body (10).
  2. 2. The hose assembly according to claim 1, wherein the outer circumferential surface of the inner core (22) is further provided with a plurality of inner core protrusions (225) arranged in the first direction, the inner core protrusions (225) being located between the first inner core protrusions (223) and the second inner core protrusions (224).
  3. 3. The hose assembly according to claim 2, wherein the number of sleeve bosses (233) is plural, the plurality of sleeve bosses (233) being arranged in the first direction, and the sleeve bosses (233) furthest from the sleeve projections (232) and second core projections (224) being in register engagement.
  4. 4. A hose comprising a hose body of any one of claims 1 to 3.
  5. 5. The hose according to claim 4, wherein the hose body (10) comprises a polyoxymethylene inner liner layer (11), a carcass layer (12), a fiber layer (13) and a thermoplastic polyurethane protective layer (14) arranged in that order from the inside to the outside.
  6. 6. The hose according to claim 5, wherein the carcass layer (12) is provided with a plurality of wire winding layers sequentially arranged in a pipe diameter direction of the hose body (10), wherein the innermost wire winding layer is a first wire winding layer, the outermost wire winding layer is an nth wire winding layer, a wire winding angle of the first wire winding layer is α, the wire winding angle α of each wire winding layer is sequentially increased by a preset degree from the first wire winding layer to the nth wire winding layer, and the wire winding angle α of the nth wire winding layer is not more than 66 degrees, wherein N is a positive integer.
  7. 7. The hose of claim 6, wherein the wire winding angle α of the first wire winding layer ranges from 53 to 55 degrees, and the preset range ranges from 0.3 to 0.6 degrees.
  8. 8. A method of manufacturing a hose, for manufacturing a hose body according to any one of claims 1 to 7, the method comprising the steps of: Drying the polyformaldehyde material, extruding and cooling to form a polyformaldehyde lining layer (11); And sequentially paving a framework layer (12), a fiber layer (13) and a thermoplastic polyurethane protective layer (14) on the polyoxymethylene inner liner layer (11), wherein an adhesive is coated between the polyoxymethylene inner liner layer (11) and the framework layer (12), and an adhesive is coated between the fiber layer (13) and the thermoplastic polyurethane protective layer (14).
  9. 9. The method for manufacturing a hose according to claim 8, further comprising the step of manufacturing the polyoxymethylene inner liner layer (11) from the following raw materials in parts by weight: 80-90 parts of polyoxymethylene, 5-10 parts of nano calcium carbonate, 1-3 parts of surface treatment agent, 1-3 parts of compatilizer, 0.2-0.8 part of antioxidant and 0.2-0.8 part of ultraviolet absorber.
  10. 10. The method for manufacturing a hose according to claim 9, wherein the step of manufacturing the polyoxymethylene inner liner layer (11) comprises weighing 80 parts by weight of polyoxymethylene, 5 parts by weight of nano calcium carbonate, 1 part by weight of a surface treatment agent, 1 part by weight of a compatibilizer, 0.2 part by weight of an antioxidant, and 0.2 part by weight of an ultraviolet absorber.
  11. 11. The method for manufacturing a hose according to claim 9, wherein the step of manufacturing the polyoxymethylene inner liner layer (11) comprises weighing 85 parts by weight of polyoxymethylene, 8 parts by weight of nano calcium carbonate, 2 parts by weight of a surface treatment agent, 2 parts by weight of a compatibilizer, 0.5 part by weight of an antioxidant, and 0.5 part by weight of an ultraviolet absorber.
  12. 12. The method for manufacturing a hose according to claim 9, wherein the step of manufacturing the polyoxymethylene inner liner layer (11) comprises weighing 90 parts by weight of polyoxymethylene, 10 parts by weight of nano calcium carbonate, 3 parts by weight of a surface treating agent, 3 parts by weight of a compatibilizer, 0.8 part by weight of an antioxidant, and 0.8 part by weight of an ultraviolet absorber.

Description

Hose assembly, hose and preparation method Technical Field The invention relates to the technical field of hose connection, in particular to a hose assembly, a hose and a preparation method. Background The hose assembly is used as one of indispensable components in the high-pressure cleaning industry, the petrochemical industry field and the mechanical manufacturing field, and the characteristics of ultrahigh pressure resistance, corrosion resistance, wear resistance and the like of the hose assembly directly determine the working performance of matched equipment. However, the various components of the existing hose assemblies are subject to deformation under high and ultra-high pressures, resulting in poor sealing performance of the hose assembly. Disclosure of Invention In view of the above, the present invention provides a hose assembly, which enables the structures of a hose body, an inner core and a sleeve to be integrated, prevents each component of the hose assembly from being deformed under high pressure and ultra-high pressure, and improves the sealing performance of the hose assembly. The invention also provides a hose comprising the hose body. The invention also provides a preparation method of the hose. In order to achieve the above purpose, the present invention provides the following technical solutions: A hose assembly includes a hose body and a connector coaxially arranged; The connector comprises a connector piece, an inner core and a sleeve; the connector piece is provided with a connector through hole, the first end of the inner core is communicated with the connector through hole, the second end of the inner core is sleeved in the sleeve, and the extending direction from the first end of the inner core to the second end of the inner core is a first direction; The inner peripheral surface of the sleeve is sequentially provided with a sleeve convex groove, a sleeve bulge and a sleeve boss along the first direction, and the outer peripheral surface of the inner core is sequentially provided with an inner core groove, a limiting bulge, a first inner core bulge and a second inner core bulge along the first direction; When the hose body is sleeved between the outer peripheral surface of the second end of the inner core and the inner peripheral surface of the sleeve, the sleeve convex groove is clamped into the inner core groove, the sleeve boss and the first inner core boss are in staggered engagement, and the sleeve boss and the second inner core boss are in aligned engagement, wherein the side surface, far away from the inner core groove, of the limiting boss is used for being abutted with the end surface of the hose body so as to limit the position of the hose body. Preferably, the outer peripheral surface of the core is further provided with a plurality of core bosses arranged in the first direction, the core bosses being located between the first core protrusions and the second core protrusions. Preferably, the number of the sleeve bosses is a plurality, the plurality of sleeve bosses are arranged along the first direction, and the sleeve bosses furthest from the sleeve bosses are aligned and meshed with the second inner core bosses. A hose comprises the hose body. Preferably, the hose body comprises a polyoxymethylene inner liner layer, a framework layer, a fiber layer and a thermoplastic polyurethane protective layer which are sequentially arranged from inside to outside. The hose comprises a hose body, a framework layer, a plurality of steel wire winding layers, a first steel wire winding layer, an N-th steel wire winding layer, a positive integer and a steel wire winding angle alpha of each steel wire winding layer, wherein the framework layer is sequentially arranged along the pipe diameter direction of the hose body, the steel wire winding layer of the innermost layer is the first steel wire winding layer, the steel wire winding layer of the outermost layer is the N-th steel wire winding layer, the steel wire winding angle of the first steel wire winding layer is alpha, the steel wire winding angle alpha of each steel wire winding layer is sequentially increased by a preset degree, the steel wire winding angle alpha of each steel wire winding layer is not more than 66 degrees, and N is the positive integer. Preferably, the range interval of the steel wire winding angle alpha of the first steel wire winding layer is 53-55 degrees, and the range interval of the preset degree is 0.3-0.6 degrees. A method of making a hose for making a hose body, the method comprising the steps of: Winding a polyoxymethylene material for drying treatment, extruding and cooling to form a polyoxymethylene lining layer; And sequentially paving a framework layer, a fiber layer and a thermoplastic polyurethane protective layer on the polyoxymethylene inner liner, wherein an adhesive is coated between the polyoxymethylene inner liner and the framework layer, and an adhesive is coated between the fiber layer an