Corrosion-resistant PVC hose

Abstract

The utility model relates to the field of PVC (polyvinyl chloride) hoses, discloses a corrosion-resistant PVC hose, and solves the problems that a part of liquid slowly permeates downwards along a gap and then drops to the inner side of a threaded head, once corrosive liquid enters the inner side of the threaded head, a series of chain reactions are caused, the corrosive liquid is in contact with high-concentration corrosive liquid for a long time, and the corrosion resistance of the threaded head is influenced. The corrosion-resistant PVC hose solves the problems that due to accumulation of corrosion products, the original shape of threads can be changed, the matching precision between thread teeth is reduced, and the tightness degree of follow-up connection is further hindered in the prior art, the corrosion-resistant PVC hose comprises a first PVC hose body and an internal thread head communicated with one end of the first PVC hose body, and the internal thread head is connected with the other end of the first PVC hose body. And the external thread head is in threaded connection with the inner side of the internal thread head, by arranging the pushing assembly, when the first PVC hose body is connected with the second PVC hose body, the joint of the internal thread head and the external thread head is not prone to making contact with corrosive liquid, and therefore the tightness degree is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of PVC hose, concretely to a corrosion -resistant PVC hose. BACKGROUND

[0002] Corrosion -resistant PVC hose is a kind of hose made of polyvinyl chloride (PVC) as main raw material, with excellent corrosion resistance, can resist the corrosion of various acids, such as dilute sulfuric acid, hydrochloric acid and other common acid liquor.In the chemical industry, used in the pipeline system for conveying acidic chemicals, corrosion -resistant PVC hose can effectively prevent the erosion of acid liquor to pipeline, ensure the safety and stability of liquid conveying.

[0003] The utility model discloses a kind of corrosion -resistant PVC hose, including PVC hose body and threaded connector, the left and right ends of PVC hose body are fixedly connected with threaded connector.The utility model is connected by PVC hose body, PVC base layer, inner corrosion -resistant layer, first polyurethane anticorrosive coating layer, first polyether ether ketone coating, first polyethylene anticorrosive coating layer, first trimerization ethylene coating, outer corrosion -resistant layer, second polyurethane anticorrosive coating layer, second polyether ether ketone coating, in the liquid conveying link of industry and numerous fields, corrosion -resistant PVC hose plays a vital role, since it has good corrosion resistance, can adapt to the transmission demand of various corrosive media in industries such as chemical industry, electroplating, pharmacy, currently, in the connection mode of corrosion -resistant PVC hose, threaded head connection is a more common means, it is with the relatively simple structure and the characteristics of being convenient to install and disassemble, has been widely applied, however, this connection mode has significant defects, when two corrosion -resistant PVC hoses are connected by threaded head, connection is difficult to realize completely seamless fit, limited by the machining precision of thread, the flexibility of hose material and artificial factors in assembly process, after actual connection is completed, gap of different sizes will inevitably be stored at connection place.Corrosive liquid will slowly penetrate along the gap under the action of surface tension and gravity when flowing through these gaps, and then drop to the inside of threaded head, once corrosive liquid enters the inside of threaded head, a series of chain reactions will be triggered, the material of threaded head usually has certain initial corrosion resistance, but its corrosion resistance will gradually be weakened when being in contact with high-concentration corrosive liquid for a long time.Corrosion products not only change the original shape of thread, make the matching precision between thread teeth reduce, but also form a layer of "corrosion scale" on the surface of thread, further hinder the tightness of subsequent connection. SUMMARY

[0004] The utility model discloses a purpose at providing a kind of corrosion-resistant PVC hose, work is carried out using this device, to solve a part of liquid will slowly penetrate along the gap, and further drop to the inside of threaded head, once corrosive liquid enters the inside of threaded head, it will trigger a series of chain reactions, long time and high concentration corrosive liquid contact, its corrosion resistance will be gradually weakened.Corrosion product accumulation not only can change the original shape of thread, make the matching precision between thread tooth reduce, further hinder the close degree of subsequent connection problem.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of corrosion-resistant PVC hose, including first PVC hose main body, the inner thread head being communicated in the one end of first PVC hose main body, the outer thread head being threadedly connected in the inside of inner thread head, the second PVC hose main body being communicated in the one end of outer thread head, the sealing ring being arranged in the other end of outer thread head, the outside of first PVC hose main body is provided with push component, the inside of push component is provided with buckle component;

[0006] Push component includes the first anticorrosive layer being fixedly connected in the outside of first PVC hose main body, and the second anticorrosive layer being fixedly connected in the outside of second PVC hose main body.

[0007] Preferably, the transverse of first anticorrosive layer is close to the one end surface of second PVC hose main body and exceeds the transverse of inner thread head close to the one end surface of second PVC hose main body.

[0008] Preferably, the transverse of second anticorrosive layer is close to the one end surface of first PVC hose main body and does not exceed the transverse of inner thread head close to the one end surface of first PVC hose main body.

[0009] Preferably, buckle component includes the connecting rod being fixedly connected in the one end of first anticorrosive layer, the clamping block being fixedly connected in the one end of connecting rod, the first recess being arranged in the one end of second anticorrosive layer, and the two baffles being arranged in the inside of first recess.

[0010] Preferably, connecting rod is equidistantly distributed in the one end of first anticorrosive layer, and the number of connecting rod is equal to the number of first recess.

[0011] Preferably, the appearance structure of clamping block is arc, and the one end surface of clamping block close to first PVC hose main body is inclined surface.

[0012] Preferably, the width of first recess is greater than the width of clamping block, and the width of clamping block is equal to the width of connecting rod.

[0013] Preferably, the interval of two baffles is less than the width of clamping block.

[0014] The utility model provides a kind of corrosion-resistant PVC hose, by being provided with push subassembly, make when the first PVC hose main body and the second PVC hose main body connect, make push mechanism can be attached, make the connecting place of internal thread head and external thread head not easily contact with corrosive liquid, relative to prior art, reduce the corrosion to internal thread head and external thread head, improve the close degree, to improve the close degree. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the first PVC hose main body front view sectional structure schematic diagram of the utility model;

[0017] Figure 3 It is the first recess right view sectional structure schematic diagram of the utility model;

[0018] Figure 4 It is the first recess overhead structure schematic diagram of the utility model;

[0019] Figure 5 It is the Figure 2 structure schematic diagram of the utility model in A place.

[0020] In the drawing: 1, first PVC hose main body;2, internal thread head;3, external thread head;5, second PVC hose main body;8, sealing ring;6, push subassembly;7, buckle assembly;601, first anticorrosive layer;602, second anticorrosive layer;701, connecting rod;702, clamping block;703, first recess;704, baffle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides technical scheme: a kind of corrosion-resistant PVC hose, including first PVC hose main body 1, internal thread head 2 being communicated in the one end of first PVC hose main body 1, external thread head 3 being threadedly connected in the inner side of internal thread head 2, second PVC hose main body 5 being communicated in the one end of external thread head 3, sealing ring 8 being arranged in the other end of external thread head 3, the outside of first PVC hose main body 1 is provided with push subassembly 6, the inside of push subassembly 6 is provided with buckle assembly 7;

[0023] The pushing assembly 6 comprises a first corrosion-proof layer 601 fixedly connected to the outer side of the first PVC hose body 1, and a second corrosion-proof layer 602 fixedly connected to the outer side of the second PVC hose body 5. The end surface of the first corrosion-proof layer 601 transversely close to the second PVC hose body 5 exceeds the end surface of the inner threaded head 2 transversely close to the second PVC hose body 5, and the end surface of the second corrosion-proof layer 602 transversely close to the first PVC hose body 1 does not exceed the end surface of the inner threaded head 2 transversely close to the first PVC hose body 1, so that the contact surface of the second corrosion-proof layer 602 and the first corrosion-proof layer 601 is not in the same plane as the contact surface of the outer threaded head 3 and the inner threaded head 2.

[0024] The buckle assembly 7 comprises a connecting rod 701 fixedly connected to one end of the first corrosion-proof layer 601, and a clamping block 702 fixedly connected to one end of the connecting rod 701. The second corrosion-proof layer 602 is internally provided with a first recess 703 at one end. The connecting rod 701 is equidistantly distributed at one end of the first corrosion-proof layer 601, and the number of the connecting rod 701 is equal to the number of the first recess 703. The inner side of the first recess 703 is provided with two baffles 704. The clamping block 702 has a circular arc-shaped appearance structure, and the end surface of the clamping block 702 close to the first PVC hose body 1 is an inclined surface. The width of the first recess 703 is greater than the width of the clamping block 702, and the width of the clamping block 702 is equal to the width of the connecting rod 701. The distance between the two baffles 704 is less than the width of the clamping block 702, so that the clamping block 702 can move to the inner side of the left end of the first recess 703, and the clamping block 702 can move the second corrosion-proof layer 602 along the inclined edge.

[0025] When the first PVC hose body 1 and the second PVC hose body 5 are connected, the inner threaded head 2 and the outer threaded head 3 are threadedly connected, the first corrosion-proof layer 601 moves to the outer side of the outer threaded head 3, the end surface of the first corrosion-proof layer 601 transversely close to the second PVC hose body 5 exceeds the end surface of the inner threaded head 2 transversely close to the second PVC hose body 5, the end surface of the second corrosion-proof layer 602 transversely close to the first PVC hose body 1 does not exceed the end surface of the inner threaded head 2 transversely close to the first PVC hose body 1, so that the contact surface of the second corrosion-proof layer 602 and the first corrosion-proof layer 601 is not in the same plane as the contact surface of the outer threaded head 3 and the inner threaded head 2. When a small amount of corrosive liquid enters between the first corrosion-proof layer 601 and the second corrosion-proof layer 602, it does not directly enter the inner threaded head 2 and the outer threaded head 3, reducing the corrosion of the inner threaded head 2 and the outer threaded head 3, and improving the tightness.

[0026] When the outer threaded head 3 and the inner threaded head 2 are rotated, the connecting rod 701 and the clamping block 702 move to the inner side of the first groove 703, and as the connecting rod 701 and the clamping block 702 continuously penetrate, the outer appearance structure of the clamping block 702 is arc-shaped, and the end face of the clamping block 702 close to the first PVC hose body 1 is an inclined surface, so that the clamping block 702 is clamped on the inner side of the two baffles 704, the inclined surface of the clamping block 702 pushes the two baffles 704 and then pulls the second corrosion-resistant layer 602 to move to the first corrosion-resistant layer 601. As time goes on and due to factors such as friction during use, the outer corrosion-resistant layer will indeed be worn. In this case, the clamping block 702 can be stretched, and when the outer second corrosion-resistant layer 602 and the first corrosion-resistant layer 601 are worn, the stretching action of the clamping block 702 can pull the outer second corrosion-resistant layer 602 and the first corrosion-resistant layer 601 to make them fit again, thereby maintaining the sealing state. In this way, even in the case of corrosion-resistant layer wear, the compensating effect of the clamping block 702 can still maintain the sealing performance of the entire connection part, prevent the leakage of corrosive liquid, and this design takes into account the initial installation sealing effect and the wear compensation during long-term use, improves the reliability and durability of the corrosion-resistant PVC hose connection.

[0027] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0028] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant PVC hose comprising a first PVC hose body (1), an inner threaded head (2) connected to one end of the first PVC hose body (1), an outer threaded head (3) threadedly connected to the inner side of the inner threaded head (2), a second PVC hose body (5) connected to one end of the outer threaded head (3), and a sealing ring (8) arranged at the other end of the outer threaded head (3), characterized in that: The outer side of the first PVC hose body (1) is provided with a pushing assembly (6), and the inner side of the pushing assembly (6) is provided with a buckle assembly (7). The pushing assembly (6) comprises a first corrosion-resistant layer (601) fixedly connected to the outer side of the first PVC hose body (1), and the outer side of the second PVC hose body (5) is fixedly connected with a second corrosion-resistant layer (602).

2. A corrosion resistant PVC hose according to claim 1, characterized in that: The transverse end of the first corrosion-resistant layer (601) near the second PVC hose body (5) exceeds the transverse end of the inner threaded head (2) near the second PVC hose body (5).

3. A corrosion resistant PVC hose according to claim 1, characterized in that: The transverse end of the second corrosion-resistant layer (602) near the first PVC hose body (1) does not exceed the transverse end of the inner threaded head (2) near the first PVC hose body (1).

4. The corrosion resistant PVC hose according to claim 1, characterized in that: The buckle assembly (7) comprises a connecting rod (701) fixedly connected to one end of the first corrosion-resistant layer (601), one end of the connecting rod (701) is fixedly connected with a clamping block (702), and the inner side of one end of the second corrosion-resistant layer (602) is provided with a first recess (703), and the inner side of the first recess (703) is provided with two baffles (704).

5. A corrosion resistant PVC hose according to claim 4, characterised in that: The connecting rods (701) are equidistantly distributed at one end of the first corrosion-resistant layer (601), and the number of the connecting rods (701) is equal to the number of the first recesses (703).

6. A corrosion resistant PVC hose according to claim 4, characterized in that: The appearance structure of the clamping block (702) is arc-shaped, and the end of the clamping block (702) near the first PVC hose body (1) is an inclined surface.

7. A corrosion resistant PVC hose according to claim 4, characterized in that: The width of the first recess (703) is greater than the width of the clamping block (702), and the width of the clamping block (702) is equal to the width of the connecting rod (701).

8. A corrosion resistant PVC hose according to claim 4, characterized in that: The distance between the two baffles (704) is less than the width of the clamping block (702).

Images