Negative-pressure-resistant rubber tube

Abstract

The utility model discloses a negative pressure resistant rubber pipe, which belongs to the field of hose processing and comprises a base layer pipeline, a plurality of rubber layers are arranged outside the base layer pipeline, and all the rubber layers are sequentially adhered from inside to outside along the radial direction of the base layer pipeline; all the adhesive layers comprise at least one reinforcing layer; the reinforcing layer comprises at least one bottom rubber layer and at least one steel wire layer, and the steel wire layers and the bottom rubber layers are alternately arranged in the radial direction of the base layer pipeline. The base layer pipeline is of an existing rubber pipe structure, and only the thickness of the base layer pipeline needs to be smaller than that of an existing rubber pipe. According to the utility model, the problem of serious deformation under negative pressure due to low strength and low negative pressure resistance of the existing large-size rubber pipe is solved.

Description

Technical Field

[0001] The utility model belongs to the field of hose processing and relates to a negative pressure resistant hose. Background Art

[0002] Compared with flexible pipes, rubber hoses focus on rubber hoses that are extruded from polymer chemical raw materials through vulcanization and other processes. There are many types of rubber hoses, which have been used in many fields of life and production. Summarizing the working conditions, common pipes include: water pipes, hot water pipes, steam pipes, marine pipes, food and beverage pipes, air pipes, welded pipes, gas pipes, ventilation pipes, material pipes, oil pipes, chemical pipes, high-pressure pipes, etc.

[0003] At present, it is found that large-sized hoses with a diameter of more than 100 are severely deformed under negative pressure during the use of hoses. Severe deformation of hoses may cause the original strength of the pipe body to weaken, thereby reducing the pressure resistance and structural stability of the pipeline, which may make the pipeline more prone to rupture or leakage during use. Utility Model Content

[0004] The utility model aims to provide a negative pressure resistant rubber hose, which solves the problem that large-size rubber hoses with a diameter of more than 100 are severely deformed under negative pressure during the use of the rubber hoses.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A negative pressure resistant rubber hose comprises a base pipe, the outside of which is provided with multiple rubber layers, all of which are sequentially bonded from the inside to the outside along the radial direction of the base pipe; all of the rubber layers contain at least one reinforcing layer;

[0007] The reinforcement layer includes at least one base rubber layer and at least one steel wire layer, and the steel wire layer and the base rubber layer are alternately arranged along the radial direction of the base pipe.

[0008] The base pipe in the utility model is an existing rubber hose structure, but the thickness of the base pipe needs to be lower than that of the existing rubber hose. On the basis of the base pipe, the utility model arranges a multi-layer rubber layer containing a reinforcement layer without increasing the thickness of the entire rubber hose, which can not only ensure the flexibility required for the use of the rubber hose, but also support forces in different directions, enhance the strength of the rubber hose, and enable the rubber hose to withstand higher negative pressure, thus solving the problem that the current large-size rubber hose has low strength, low negative pressure resistance, and severe deformation under negative pressure.

[0009] The base pipe in the utility model is used for conveying medium, and multiple rubber layers are adhered to the outside of the base pipe. While ensuring the flexibility of the hose, the strength of the entire hose is strengthened by the reinforcement layer. The reinforcement layer in the utility model is not entirely a steel wire layer. In order to ensure the flexibility of the hose, the reinforcement layer adopts a structure of a layer of steel wire layer and a layer of base rubber layer. When the hose is bent by external force, the elastic deformation of the base rubber layer can reduce the deformation degree of the steel wire layer in precise contact with it.

[0010] Furthermore, the steel wire layer is a regular tic-tac-toe grid structure formed by staggered arrangement of multiple steel wires in a tic-tac-toe structure, and a glue filling hole with a depth equal to the diameter of the steel wire is formed at the center of each tic-tac-toe structure in the steel wire layer, and the thickness of the glue layer filled in the glue filling hole is greater than or equal to half of the depth of the glue filling hole.

[0011] The tighter the steel wires are arranged, the higher the strength of the steel wire layer is, but the flexibility of the entire hose is lower; therefore, in order to ensure the flexibility of the hose, the utility model adopts a tic-tac-toe grid structure with glue-filled holes in the middle as the steel wire layer, ensuring that there is a certain distance between adjacent steel wires and they are not tightly connected; in addition, the utility model fills the glue-filled holes with a colloid with a certain strength, and the colloid forms an elastic glue layer after solidification. Under the action of external force, the glue layer can effectively alleviate the deformation of the surrounding steel wires. From the perspective of the entire steel wire layer, a steel wire is clamped in the middle by multiple glue layers, and the multiple glue layers cooperate to maintain the balance of the steel wire, which significantly reduces the deformation of the steel wire and avoids repeated obvious deformation and breakage of the steel wire. The steel wire layer of the utility model has a long service life.

[0012] Furthermore, the steel wire is a spiral steel wire formed by twisting a plurality of thin steel wires, and a rubber strip is provided between adjacent thin steel wires. The thin steel wire and the rubber strip are both cylindrical structures, and the diameter of the thin steel wire is greater than the diameter of the rubber strip.

[0013] The spiral steel wire formed by twisting a plurality of thin steel wires can improve the bending fatigue life and torsion resistance of the steel wire. In addition, the utility model adds rubber strips between adjacent thin steel wires, which can reduce the wear between the adjacent thin steel wires.

[0014] Furthermore, the reinforcement layer also includes a plurality of flexible reinforcement lines, each of which repeatedly shuttles between all base rubber layers and steel wire layers to form an annular toothed ring-shaped suture line that sews all base rubber layers and steel wire layers, and all annular toothed ring-shaped suture lines formed by all flexible reinforcement lines are arranged one by one at equal intervals along the axial direction of the base pipe.

[0015] In the utility model, each layer in the reinforcing layer is generally bonded by an adhesive, which is easy to use but has poor firmness. Therefore, the utility model uses a flexible reinforcement line to sew the multi-layer structure to reinforce the multi-layer structure, making the structure of the reinforcing layer more complete.

[0016] Furthermore, the thickness of the outermost adhesive layer among all the adhesive layers is greater than the thickness of all other adhesive layers.

[0017] The outer layer of rubber is in direct contact with the complex external environment. If the thickness is too thin, it is easy to be worn out. Therefore, the outer layer of rubber needs to have a certain thickness to play a good protective role.

[0018] Furthermore, four rubber layers are arranged on the outside of the base pipe, and from the inside to the outside, the second rubber layer among the four rubber layers is a reinforcement layer.

[0019] 4 adhesive layers are suitable for general use.

[0020] Furthermore, the distance between two adjacent and mutually parallel steel wires in the steel wire layer is 5-10 mm.

[0021] The distance between the two steel wires determines the width of the glue filling hole. The glue filling layer needs to have a sufficient width to play an obvious deformation buffering role on the steel wire along the radial direction of the steel wire.

[0022] Furthermore, the glue filled in the glue-filling hole is silicone rubber or polyurethane glue.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0024] 1. The utility model provides a negative pressure resistant hose with a multi-layer rubber layer including a reinforcement layer on the basis of the base pipe without increasing the thickness of the entire hose, which can not only ensure the flexibility required for the use of the hose, but also support forces in different directions, strengthen the strength of the hose, and enable the hose to withstand higher negative pressure, thus solving the problem that the current large-size hose has low strength, low negative pressure resistance, and severe deformation under negative pressure;

[0025] 2. The reinforcing layer in the negative pressure resistant rubber hose of the utility model is not entirely a steel wire layer. In order to ensure the flexibility of the rubber hose, the reinforcing layer adopts a structure of a steel wire layer and a bottom rubber layer. When the rubber hose is bent by external force, the elastic deformation of the bottom rubber layer can reduce the deformation degree of the steel wire layer in precise contact with it;

[0026] 3. The utility model is a negative pressure resistant rubber hose, in which a colloid with a certain strength is filled in the glue filling hole. After the colloid is solidified, an elastic rubber layer is formed. Under the action of external force, the rubber layer can effectively alleviate the deformation of the surrounding steel wires. From the perspective of the entire steel wire layer, a steel wire is clamped in the middle by multiple rubber layers, and the multiple rubber layers cooperate to maintain the balance of the steel wire, so that the deformation degree of the steel wire is significantly reduced, avoiding the situation where the steel wire is repeatedly and significantly deformed and broken. The steel wire layer of the utility model has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work, including:

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the end surface structure of the utility model;

[0030] Figure 3 It is a schematic diagram of the structure of the reinforcement layer of the utility model;

[0031] Figure 4 This is a schematic diagram of the steel wire layer structure of the utility model;

[0032] Figure 5 It is a structural schematic diagram of part A of the utility model;

[0033] Figure 6 It is a structural schematic diagram of the steel wire of the utility model.

[0034] Markings in the figure: 1-base pipe, 2-glue layer, 3-reinforcement layer, 4-thin steel wire, 5-glue strip, 6-flexible reinforcement line, 31-bottom glue layer, 32-steel wire layer, 321-steel wire, 322-glue filling hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0039] Example 1

[0040] like Figure 1-Figure 6 As shown, a preferred embodiment of the utility model provides a negative pressure resistant rubber hose, comprising a base pipe 1, a plurality of rubber layers 2 are arranged on the outside of the base pipe 1, and all the rubber layers 2 are sequentially bonded from the inside to the outside along the radial direction of the base pipe 1; all the rubber layers 2 contain at least one reinforcing layer 3;

[0041] The reinforcement layer 3 includes at least one base rubber layer 31 and at least one steel wire layer 32 . The steel wire layers 32 and the base rubber layers 31 are alternately arranged along the radial direction of the base pipe 1 .

[0042] The thickness of the outermost adhesive layer among all the adhesive layers 2 is greater than the thickness of all other adhesive layers 2 .

[0043] Four adhesive layers 2 are arranged on the outside of the base pipe 1 . From the inside to the outside, the second adhesive layer 2 among the four adhesive layers 2 is a reinforcement layer 3 .

[0044] The base pipe in the utility model is an existing rubber hose structure, but the thickness of the base pipe needs to be lower than that of the existing rubber hose. On the basis of the base pipe, the utility model arranges a multi-layer rubber layer containing a reinforcement layer without increasing the thickness of the entire rubber hose, which can not only ensure the flexibility required for the use of the rubber hose, but also support forces in different directions, enhance the strength of the rubber hose, and enable the rubber hose to withstand higher negative pressure, thus solving the problem that the current large-size rubber hose has low strength, low negative pressure resistance, and severe deformation under negative pressure.

[0045] The base pipe in the utility model is used for conveying medium, and multiple rubber layers are adhered to the outside of the base pipe. While ensuring the flexibility of the hose, the strength of the entire hose is strengthened by the reinforcement layer. The reinforcement layer in the utility model is not entirely a steel wire layer. In order to ensure the flexibility of the hose, the reinforcement layer adopts a structure of a layer of steel wire layer and a layer of base rubber layer. When the hose is bent by external force, the elastic deformation of the base rubber layer can reduce the deformation degree of the steel wire layer in precise contact with it.

[0046] Example 2

[0047] In this embodiment, based on the embodiment 1, the steel wire layer 32 is a regular tic-tac-toe grid structure formed by staggered arrangement of multiple steel wires 321 in a tic-tac-toe structure, and a glue-filling hole 322 with a depth equal to the diameter of the steel wire 321 is formed at the center of each tic-tac-toe structure in the steel wire layer 32, and the thickness of the glue layer filled in the glue-filling hole 322 is greater than or equal to one half of the depth of the glue-filling hole 322.

[0048] The steel wire 321 is a spiral steel wire formed by twisting a plurality of thin steel wires 4 , and a rubber strip 5 is arranged between adjacent thin steel wires 4 . The thin steel wires 4 and the rubber strip 5 are both cylindrical structures, and the diameter of the thin steel wire 4 is greater than the diameter of the rubber strip 5 .

[0049] The distance between two adjacent and mutually parallel steel wires 321 in the steel wire layer 32 is 5-10 mm.

[0050] The glue filled in the glue-filling hole 322 is silicone rubber or polyurethane glue.

[0051] The tighter the steel wires are arranged, the higher the strength of the steel wire layer is, but the flexibility of the entire hose is lower; therefore, in order to ensure the flexibility of the hose, the utility model adopts a tic-tac-toe grid structure with glue-filled holes in the middle as the steel wire layer, ensuring that there is a certain distance between adjacent steel wires and they are not tightly connected; in addition, the utility model fills the glue-filled holes with a colloid with a certain strength, and the colloid forms an elastic glue layer after solidification. Under the action of external force, the glue layer can effectively alleviate the deformation of the surrounding steel wires. From the perspective of the entire steel wire layer, a steel wire is clamped in the middle by multiple glue layers, and the multiple glue layers cooperate to maintain the balance of the steel wire, which significantly reduces the deformation of the steel wire and avoids repeated obvious deformation and breakage of the steel wire. The steel wire layer of the utility model has a long service life.

[0052] Example 3

[0053] In this embodiment, based on the above embodiment, the reinforcement layer 3 also includes a plurality of flexible reinforcement lines 6, each of which repeatedly shuttles between all base rubber layers 31 and steel wire layers 32 to form an annular tooth-ring-shaped suture line that sutures all base rubber layers 31 and steel wire layers 32, and all the annular tooth-ring-shaped suture lines formed by all the flexible reinforcement lines 6 are arranged one by one at equal intervals along the axial direction of the base pipe 1.

[0054] In the utility model, each layer in the reinforcing layer is generally bonded by an adhesive, which is easy to use but has poor firmness. Therefore, the utility model uses a flexible reinforcement line to sew the multi-layer structure to reinforce the multi-layer structure, making the structure of the reinforcing layer more complete.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A negative pressure resistant hose, characterized in that: It comprises a base pipe (1), wherein a plurality of adhesive layers (2) are arranged on the outside of the base pipe (1), and all the adhesive layers (2) are sequentially bonded from the inside to the outside along the radial direction of the base pipe (1); and all the adhesive layers (2) contain at least one reinforcing layer (3); The reinforcement layer (3) comprises at least one base rubber layer (31) and at least one steel wire layer (32), and the steel wire layer (32) and the base rubber layer (31) are alternately arranged along the radial direction of the base pipe (1).

2. The negative pressure resistant hose according to claim 1, characterized in that: The steel wire layer (32) is a regular tic-tac-toe grid structure formed by staggered arrangement of a plurality of steel wires (321) in a tic-tac-toe structure, and a glue-filling hole (322) having a depth equal to the diameter of the steel wire (321) is formed at the center of each tic-tac-toe structure in the steel wire layer (32), and the thickness of the glue layer filled in the glue-filling hole (322) is greater than or equal to one half of the depth of the glue-filling hole (322).

3. A negative pressure resistant hose according to claim 2, characterized in that: The steel wire (321) is a spiral steel wire formed by twisting a plurality of thin steel wires (4), and a rubber strip (5) is arranged between adjacent thin steel wires (4). Both the thin steel wire (4) and the rubber strip (5) are cylindrical structures, and the diameter of the thin steel wire (4) is greater than the diameter of the rubber strip (5).

4. The negative pressure resistant hose according to claim 1, characterized in that: The reinforcing layer (3) further comprises a plurality of flexible reinforcement lines (6), each of which repeatedly shuttles between all the base rubber layers (31) and the steel wire layers (32) to form an annular toothed ring-shaped suture line for suture all the base rubber layers (31) and the steel wire layers (32), and all the annular toothed ring-shaped suture lines formed by all the flexible reinforcement lines (6) are arranged one by one at equal intervals along the axial direction of the base pipe (1).

5. The negative pressure resistant hose according to claim 1, characterized in that: Four rubber layers (2) are arranged on the outside of the base pipe (1), and from the inside to the outside, the second rubber layer (2) among the four rubber layers (2) is a reinforcement layer (3).

6. The negative pressure resistant hose according to claim 2, characterized in that: The distance between two adjacent and mutually parallel steel wires (321) in the steel wire layer (32) is 5-10 mm.

7. The negative pressure resistant hose according to claim 2, characterized in that: The glue filled in the glue filling hole (322) is silicone rubber or polyurethane glue.

Images