Cleaning type metal hose

Abstract

According to the cleaning type metal hose, two end welding structures are arranged at the bottoms of two annular grooves correspondingly, a corrugated pipe, a soft protective sleeve and a protective sleeve head are connected through the end welding structures, and the protective sleeve head and a flange part are connected through a side periphery welding structure; according to the cleaning type metal hose, the annular groove is formed in the inner wall of the inner end of the flange part in the length direction, the outer wall of the communicating pipe part is matched with the inner wall of the annular groove, the two end welding structures are arranged at the bottoms of the two annular grooves respectively to weld the corrugated pipe, the soft protective sleeve and the protective sleeve head, the end welding structures are protected by the annular groove, and therefore the cleaning type metal hose is convenient to clean. The machining process is simple, meanwhile, the failure possibility is reduced, the sheath head and the flange part are connected through the side periphery welding structure, then overall sealing and structural strength are achieved, and the advantages of being simple and efficient are achieved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline structures, in particular to a clean metal hose. Background Art

[0002] In the prior art, metal hoses are often used in the use scenarios of pipes. Metal hoses are generally composed of three major parts: bellows, mesh sleeves and joints. The bellows is the main body of the metal hose, which plays a flexible role; the mesh sleeve plays a role of reinforcement and shielding; the joint plays a connecting role. In different specific applications, the connection method between the three major parts can be welding or buckling. Metal hose products include oil supply and suction hoses, steam hoses, sandblasting hoses, acid and alkali supply and suction hoses, food hoses, oxygen blowing hoses and various special-shaped hoses. Widely used in machinery, chemical, petroleum, metallurgy, food and other industries.

[0003] When the flange structure is used as a joint, joints are formed between the mesh sleeve and the flange structure at both ends of the length direction of the bellows. During use, the medium flows abnormally into the joints, which is detrimental to the sealing performance and durability of the metal hose. Using the flange structure itself to process the joints is inconvenient to process and install due to the high hardness of the flange structure itself. Utility Model Content

[0004] The main purpose of the utility model is to provide a clean metal hose, aiming to solve the problem that the metal hose has joints formed by the mesh sleeve and the flange structure at both ends in the length direction of the bellows, and the medium abnormally flows into the above joints during use.

[0005] In order to achieve the above object, the utility model provides a clean metal hose, comprising:

[0006] The conducting pipe part comprises a corrugated pipe, a soft protective sleeve and two protective sleeve heads, wherein the soft protective sleeve is sleeved and surrounded by the outer wall of the corrugated pipe, and the two protective sleeve heads are respectively sleeved on the outer peripheries of the two ends of the soft protective sleeve;

[0007] Two flange parts are respectively arranged at the two ends of the conducting tube part in the length direction, the flange part is annular, and the inner wall of the inner end of the flange part in the length direction is provided with an annular groove, the outer wall of the conducting tube part matches the inner wall of the annular groove, and the inner wall of the conducting tube part is flush with or sunken into the annular groove in the circumferential direction;

[0008] Two end welding structures are respectively arranged at the bottom of the two annular grooves, and the end welding structures connect the corrugated pipe, the soft protective sleeve and the protective sleeve head;

[0009] Two side peripheral welding structures are respectively arranged on the tops of the two annular grooves, and the side peripheral welding structures connect the sheath head and the flange part.

[0010] Furthermore, the end welding structure connects the corrugated tube, the soft protective sleeve, the protective sleeve head and the flange portion.

[0011] Furthermore, an inner wall of the outer end of the flange portion in the length direction is provided with a first flaring chamfer structure extending to the annular groove.

[0012] Furthermore, an outer wall of the sheath head and an inner wall of the flange portion are in interference fit.

[0013] Furthermore, a second flaring chamfered structure is provided on the inner periphery of the top of the annular groove, and the side circumference welding structure is located inside the second flaring chamfered structure.

[0014] Furthermore, the second flared chamfer structure is a 45-degree chamfer with a side length of 4 to 10 mm.

[0015] Furthermore, the end welding structure and the side peripheral welding structure are both wire-filling welding structures.

[0016] Furthermore, the soft protective sleeve is a metal grid structure.

[0017] Furthermore, the flange portion is a movable flange.

[0018] Furthermore, the flange portion is a fixed flange.

[0019] Furthermore, a dimension of the first flared chamfered structure in a height direction is 10 to 30 mm, and an angle of the first flared chamfered structure is 5 to 20 degrees.

[0020] The clean metal hose provided by the utility model has an annular groove on the inner wall of the inner end of the flange portion in the length direction, and the outer wall of the conducting pipe portion matches the inner wall of the annular groove. Since the two end welding structures are respectively arranged at the bottom of the two annular grooves and the bellows, the soft protective sleeve and the protective sleeve head are welded, the end welding structure is protected by the annular groove, the processing process is simple and the possibility of failure is reduced. The protective sleeve head and the flange portion are connected by the side circumferential welding structure, thereby achieving overall sealing and structural strength, and has the advantages of simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a clean metal hose according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of a flange portion of a clean metal hose in an embodiment of the utility model;

[0023] Figure 3 It is a longitudinal cross-sectional schematic diagram of a clean metal hose according to an embodiment of the utility model;

[0024] Figure 4 yes Figure 3 Schematic diagram of the middle section A;

[0025] Figure 5 yes Figure 3 Schematic diagram of part B in the middle.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0029] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0030] Reference Figures 1 to 5 In one embodiment of the utility model, a clean metal hose comprises:

[0031] The conducting tube portion 100 includes a corrugated tube 110, a soft protective sleeve 120 and two protective sleeve heads 130. The soft protective sleeve 120 is sleeved and surrounded by the outer wall of the corrugated tube 110. The two protective sleeve heads 130 are respectively sleeved on the outer peripheries of the two ends of the soft protective sleeve 120.

[0032] Two flanges 200 are respectively arranged at the two ends of the conducting tube 100 in the length direction. The flanges 200 are annular. The inner wall of the inner end of the flange 200 in the length direction is provided with an annular groove 210. The outer wall of the conducting tube 100 matches the inner wall of the annular groove 210. The inner wall of the outer end of the flange 200 in the length direction is provided with a first flared chamfered structure 220 extending to the annular groove 210. The inner wall of the conducting tube 100 is flush with or sunken at the inner end of the first flared chamfered structure 220 in the circumferential direction.

[0033] Two end welding structures 300 are respectively arranged at the bottom of the two annular grooves 210, and the end welding structures 300 connect the corrugated tube 110, the soft protective sleeve 120 and the protective sleeve head 130;

[0034] Two side peripheral welding structures 400 are respectively disposed at the tops of the two annular grooves 210 , and the side peripheral welding structures 400 connect the sheath head 130 and the flange portion 200 .

[0035] In the prior art, when the flange structure is used as a joint, seams are formed at both ends of the length direction of the bellows, the mesh sleeve and the flange structure. During use, the medium abnormally flows into the above seams, which is detrimental to the sealing performance and durability of the metal hose. Using the flange structure itself to process the above seams has the problems of inconvenience in processing and installation due to the high hardness of the flange structure itself.

[0036] The clean metal hose provided by the utility model comprises a conducting pipe portion 100 , two flange portions 200 , two end welding structures 300 and two side peripheral welding structures 400 .

[0037] The conducting tube 100 includes a corrugated tube 110, a soft protective sleeve 120 and two protective sleeve heads 130. The soft protective sleeve 120 is sleeved and surrounded on the outer wall of the corrugated tube 110. The soft protective sleeve 120 can be a mesh structure of various types, and its main function is to protect the outer wall of the corrugated tube 110. The two protective sleeve heads 130 are respectively sleeved on the outer periphery of both ends of the soft protective sleeve 120, and the protective sleeve heads 130 are used to ensure the flatness of both ends of the conducting tube 100 and facilitate installation.

[0038] Two flanges 200 are respectively arranged at the two ends of the length direction of the conducting tube 100. The flange 200 can be various types of flanges, such as fixed or movable. The flange 200 is annular, and the inner wall of the inner end of the flange 200 in the length direction is provided with an annular groove 210, and the outer wall of the conducting tube 100 matches the inner wall of the annular groove 210. During the installation process, the two ends of the conducting tube 100 are respectively inserted into the annular groove 210 of the flange 200 to form a preliminary position. The inner wall of the outer end of the flange 200 in the length direction is provided with a first flared chamfer structure 220 extending to the annular groove 210, so that the outer end of the flange 200 forms a bell mouth from the inside to the outside, forming a flow field restriction. The inner wall of the conducting tube 100 is flush or sunken at the inner end of the first flared chamfer structure 220, combined with the structure of the bell mouth of the flange 200, the flow field impact on the end connection position of the conducting tube 100 is greatly weakened. That is, the impact on the subsequent end welding structure 300 is weakened, and the possibility of structural damage or chemical corrosion is reduced. The chamfer angle of the first flared chamfer structure 220 can be between 30 and 60 degrees, which is selected according to actual conditions.

[0039] Two end welding structures 300 are respectively arranged at the bottom of the two annular grooves 210. The end welding structure 300 connects the bellows 110, the soft protective sleeve 120 and the protective sleeve head 130. When the bellows 110, the soft protective sleeve 120 and the protective sleeve head 130 are connected at the end position and then installed on the flange part 200, the end welding structure 300 is actually integrated with the conductive pipe part 100; however, in subsequent embodiments, it is limited that the end welding structure 300 can simultaneously connect the bellows 110, the soft protective sleeve 120, the protective sleeve head 130 and the flange part 200, so the concept of the end welding structure 300 is extracted.

[0040] The two side peripheral welding structures 400 are respectively arranged at the top of the two annular grooves 210, and the side peripheral welding structures 400 connect the conduction pipe part 100 (specifically at the sheath head 130) and the flange part 200. The side peripheral welding structure 400 provides the strength of the connection structure. A second flaring chamfer structure 211 can be arranged on the inner wall at the top of the annular groove 210, so as to provide space for the arrangement of the side peripheral welding structure 400. The end welding structure 300 and the side peripheral welding structure 400 are preferably filler wire welding or other types of welding structures.

[0041] In summary, the inner wall of the inner end of the flange part 200 in the length direction is provided with an annular groove 210, and the outer wall of the conductive tube part 100 matches the inner wall of the annular groove 210. Since the two end welding structures 300 are respectively arranged at the bottom of the two annular grooves 210 and the bellows 110, the soft protective sleeve 120 and the sleeve head 130 are welded, the end welding structure 300 is protected by the annular groove, the processing process is simple and the possibility of failure is reduced, and the sleeve head 130 and the flange part 200 are connected by the side circumferential welding structure 400, thereby achieving overall sealing and structural strength, which has the advantages of simplicity and efficiency.

[0042] The inner wall of the conducting tube portion 100 is flush with or sunken at the inner end of the first flared chamfered structure 220 and combined with the bell-mouth structure of the flange portion 200, the impact of the flow field on the end welding structure 300 is weakened, and the possibility of structural damage or chemical corrosion is weakened; the two side peripheral welding structures 400 are respectively arranged at the top of the two annular grooves 210, and the side peripheral welding structures 400 connect the conducting tube portion 100 (specifically at the sleeve head 130) and the flange portion 200 to provide connection structural strength.

[0043] In one embodiment, the end welding structure 300 connects the corrugated tube 110 , the soft protective sleeve 120 , the protective sleeve head 130 and the flange portion 200 .

[0044] In this embodiment, after the conductive tube 100 is partially installed in the annular groove 210 of the flange 200, a welding process is performed to weld the connection positions of the bellows 110, the soft protective sleeve 120, the protective sleeve head 130 and the flange 200 to form an end welding structure 300. At this time, the bellows 110, the soft protective sleeve 120, the protective sleeve head 130 and the flange 200 can form a stable structural connection.

[0045] In one embodiment, the inner wall of the outer end of the flange portion 200 in the length direction is provided with a first flaring chamfered structure 220 extending to the annular groove 210 .

[0046] In this embodiment, the inner wall of the conducting tube portion 100 is flush with or sunken in the annular groove 210 in the circumferential direction, which means that the inner wall of the conducting tube portion 100 is flush with or sunken in the inner end of the first flared chamfered structure 220 in terms of structure. Combined with the bell-mouth structure of the flange portion 200, the impact of the flow field on the end welding structure 300 is weakened, and the possibility of structural damage or chemical erosion is weakened. Due to the bell-mouth structure of the first flared chamfered structure 220, the velocity of the flow field at the position of the end welding structure 300 is relatively large, so a negative pressure is formed at this position, thereby achieving the above effect of reducing the risk of structural damage and chemical erosion. At the same time, the setting of the first flared chamfered structure 220 can achieve adaptation to changes in the pipe diameter to a certain extent.

[0047] In one embodiment, the outer wall of the sheath head 130 and the inner wall of the flange portion 200 are interference fit.

[0048] In this embodiment, the interference fit is used to provide a mechanical fixation and sealing method, thereby improving the sealing effect between the sheath head 130 and the flange part 200, and improving the sealing effect of the entire clean metal hose. Due to the interference fit, during the installation of the sheath head 130 and the flange part 200, the flange part 200 may need to be heated to produce a slight expansion.

[0049] Reference Figures 1 to 5 In one embodiment, a second flaring chamfered structure 211 is provided on the inner periphery of the top of the annular groove 210 , and the side circumference welding structure 400 is located in the second flaring chamfered structure 211 .

[0050] In this embodiment, a second flared chamfered structure 211 is provided on the inner wall at the top of the annular groove 210, so as to provide space for the side peripheral welding structure 400. The side peripheral welding structure 400 has a higher connection strength between the sheath head 130 and the flange portion 200. The second flared chamfered structure 211 can be a round chamfer or a straight chamfer, depending on the actual design and processing conditions. The size of the second flared chamfered structure 211 can be about 5 mm.

[0051] In one embodiment, the second flared chamfer structure 211 is a 45-degree chamfer with a side length of 4 to 10 mm.

[0052] In this embodiment, a second flared chamfered structure 211 of a suitable range is provided, which facilitates construction and provides space for the side peripheral welding structure 400 .

[0053] In one embodiment, the end welding structure 300 and the side peripheral welding structure 400 are both filler wire welding structures.

[0054] In this embodiment, the filler wire welding structure can provide a strong size filling effect, thereby improving the overall structural strength, and ultimately the working pressure of the entire clean metal hose can be guaranteed.

[0055] In one embodiment, the soft protective sleeve 120 is a metal grid structure.

[0056] In the above embodiments, the material and structure of the soft protective sleeve 120 are not limited, as long as it can be bent and protect the bellows 110. In this embodiment, the soft protective sleeve 120 is limited to a metal grid structure, which has a high structural strength and can provide excellent protection. The material of the soft protective sleeve 120 can be consistent with that of the bellows 110, thereby avoiding the generation of negative electrochemical effects.

[0057] In one embodiment, the flange portion 200 is a movable flange.

[0058] In this embodiment, the flange part 200 is movable, so it has greater flexibility during installation. For example, the flange part 200 includes a flange head and a flange ring, the flange head is welded to the conducting tube part 100, and the flange ring is sleeved on the flange head.

[0059] In one embodiment, the flange portion 200 is a fixed flange.

[0060] In this embodiment, the flange is fixed, which has the advantages of stable structure and low cost. The flange 200 is welded to the conducting tube 100 .

[0061] In one embodiment, a dimension of the first flared chamfered structure 220 in a height direction is 10 to 30 mm, and an angle of the first flared chamfered structure 220 is 5 to 20 degrees.

[0062] In this embodiment, the first flared chamfered structure 220 deviates from the axis at a relatively small angle, specifically 5 to 20 degrees, to provide a suitable degree of flow field change.

[0063] In summary, in the clean metal hose provided by the utility model, the inner wall of the inner end of the flange part 200 in the length direction is provided with an annular groove 210, and the outer wall of the conducting tube part 100 matches the inner wall of the annular groove 210. Since the two end welding structures 300 are respectively arranged at the bottom of the two annular grooves 210 and the bellows 110, the soft protective sleeve 120 and the sleeve head 130 are welded, the end welding structure 300 is protected by the annular groove, the processing process is simple and the possibility of failure is reduced, and the sleeve head 130 and the flange part 200 are connected by the side circumferential welding structure 400, thereby achieving overall sealing and structural strength, which has the advantages of simplicity and high efficiency.

[0064] The inner wall of the conducting tube 100 is flush with or sunken at the inner end of the first flared chamfered structure 220 and combined with the bell-mouth structure of the flange 200, the impact of the flow field on the end welding structure 300 is weakened, and the possibility of structural damage or chemical erosion is reduced.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A clean metal hose, characterized in that: include: The conducting tube portion (100) comprises a bellows (110), a soft protective sleeve (120) and two protective sleeve heads (130), wherein the soft protective sleeve (120) is sleeved and surrounded by the outer wall of the bellows (110), and the two protective sleeve heads (130) are respectively sleeved on the outer circumferences of two ends of the soft protective sleeve (120); Two flange portions (200) are respectively arranged at two ends of the conducting tube portion (100) in the length direction, the flange portion (200) is annular, and an inner wall of the inner end of the flange portion (200) in the length direction is provided with an annular groove (210), the outer wall of the conducting tube portion (100) matches the inner wall of the annular groove (210), and the inner wall of the conducting tube portion (100) is flush with or sunken into the annular groove (210) in the circumferential direction; Two end welding structures (300) are respectively arranged at the bottom of the two annular grooves (210), and the end welding structures (300) connect the corrugated tube (110), the soft protective sleeve (120) and the protective sleeve head (130); Two side circumferential welding structures (400) are respectively arranged at the tops of the two annular grooves (210), and the side circumferential welding structures (400) connect the sheath head (130) and the flange part (200).

2. The clean metal hose according to claim 1, characterized in that: The end welding structure (300) connects the corrugated pipe (110), the soft protective sleeve (120), the protective sleeve head (130) and the flange part (200).

3. The clean metal hose according to claim 1, characterized in that: The inner wall of the outer end of the flange portion (200) in the length direction is provided with a first flaring chamfered structure (220) extending to the annular groove (210).

4. The clean metal hose according to claim 1, characterized in that: An outer wall of the sheath head (130) and an inner wall of the flange portion (200) are in interference fit.

5. The clean metal hose according to claim 1, characterized in that: A second flared chamfered structure (211) is provided on the inner periphery of the top of the annular groove (210), and the side circumference welding structure (400) is located inside the second flared chamfered structure (211).

6. The clean metal hose according to claim 5, characterized in that: The second flared chamfer structure (211) is a 45-degree chamfer with a side length of 4 to 10 mm.

7. The clean metal hose according to claim 5, characterized in that: The end welding structure (300) and the side peripheral welding structure (400) are both wire-filling welding structures.

8. The clean metal hose according to any one of claims 1 to 7, characterized in that: The flange part (200) is a movable flange.

9. The clean metal hose according to any one of claims 1 to 7, characterized in that: The flange part (200) is a fixed flange.

10. The clean metal hose according to claim 3, characterized in that: The dimension of the first flared chamfered structure (220) in the height direction is 10 to 30 millimeters, and the angle of the first flared chamfered structure (220) is 5 to 20 degrees.

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