Novel hose inner core and hose connector suitable for PCW circulating system

Abstract

The utility model provides a novel hose inner core and a hose connector suitable for a PCW circulation system, and belongs to the technical field of pipeline connection. Comprising an inner core body; the annular table end is formed on one side of the inner core body; the tooth-shaped edge is located on the inner core body and used for increasing the meshing force and the sealing performance between the inner core body and a matched hose; the cross section of the tooth-shaped edge is a plurality of groups of trapezoids. Compared with a tooth-shaped edge with a triangular cross section in the prior art, the tooth-shaped edge with the cross section in the shape of a plurality of groups of trapezoids has the advantages that the vertex angle of the triangular tooth-shaped edge is sharp, so that the inner layer of the PVC hose is easy to deform excessively and crack in the extrusion process, and the leakage of the hose is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a novel hose inner core and a hose joint suitable for a PCW circulation system. Background Art

[0002] The PCW system, full name is Process Cooling Water, also known as process cooling water system. It is mainly used to cool process equipment, similar to the air conditioning system of process equipment. The process of circulating cooling water in the PCW system requires the use of hoses and hose connectors for connection, and the hose core is an important part of the hose, and its material will directly affect the service life and application range of the hose.

[0003] In the prior art, the edge of a conventional hose core is usually a serrated structure. When the tail end of the serrated edge of the core is shrunk and tightened by the outer shell, different parts will produce different amounts of deformation. The side close to the front end of the core will have a smaller amount of deformation, while the side close to the tail end of the core will have a larger amount of deformation, causing the tail end of the serrated hose core to cut and damage the inner wall of the matching hose. Under pressure, the hose telescopes on the outside of the hose core, further causing hose leakage. Therefore, the present application provides a new hose core and hose connector suitable for a PCW circulation system to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a new type of hose inner core and hose connector suitable for a PCW circulation system to solve the problem that the edge of the existing hose inner core is usually inverted serrations, and under pressure operation, the hose inner core performs telescopic movement, and the tail end of the serrated edge of the inner core is subjected to excessive force, which will cause the serrated edge to be cut away from the end of the inner core, thereby causing the hose to leak.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a new type of hose inner core and hose connector suitable for a PCW circulation system, comprising: an inner core body; a ring platform end, formed on one side of the inner core body; a stepped groove is formed on the inner core body near the ring platform end; a toothed edge, located on the inner core body, for increasing the bite force and sealing between the inner core body and the matching hose; the cross-section of the toothed edge is a plurality of trapezoids, wherein the inclination angle of the inclined surface of the toothed edge close to the ring platform end is greater than the inclination angle of the inclined surface of the toothed edge away from the ring platform end.

[0006] Preferably, the toothed edge includes: multiple groups of tooth grooves, the angle between the inclined surface of each group of tooth grooves close to the ring stage end and the axis of the inner core body is 30°; the angle between the inclined surface of each group of tooth grooves away from the ring stage end and the axis of the inner core body is 45°.

[0007] Preferably, the toothed edge comprises: a plurality of groups of tooth grooves, wherein the angle between the inclined surface of each group of tooth grooves on the side away from the ring stage end and the axis of the inner core body decreases from the side close to the ring stage end to the side away from the ring stage end.

[0008] Preferably, it also includes: a plurality of groups of fitting surfaces, each group of tooth grooves corresponds to a group of fitting surfaces, and the length of the fitting surface of each group of tooth grooves gradually increases from the side close to the ring platform end to the side away from the ring platform end.

[0009] Preferably, it also includes: an extension surface, which is located on the tooth groove farthest from the end of the ring platform and is used to increase the length of the tail end of the hose inner core that fits with the matching hose.

[0010] Preferably, the length of each set of contact surfaces is greater than 2 mm.

[0011] Preferably, the base angles of the two groups of trapezoidal cross sections of each group of tooth grooves are both between 15 degrees and 75 degrees.

[0012] Preferably, it comprises an outer sleeve, which is clamped and fixed at the stepped groove on the inner core body; and a fixing member, which is movably clamped and arranged at the stepped groove and is used to connect the hose connector to other connecting members.

[0013] Preferably, multiple groups of inter-tooth grooves are formed in the outer sleeve, and the angle between the inclined surface of each group of inter-tooth grooves close to the ring platform end and the axis of the outer sleeve is 30°; the angle between the inclined surface of each group of inter-tooth grooves away from the ring platform end and the axis of the outer sleeve is 45°.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] 1. In the above scheme, the purpose of setting the toothed edges with multiple sets of trapezoidal cross-sections is to compare with the toothed edges with triangular cross-sections in the prior art. Since the vertex angle of the triangular toothed edges is sharp, the inner layer of the PVC hose is easily deformed and ruptured during the extrusion process, causing the hose to leak.

[0016] 2. By setting multiple groups of tooth grooves with gradually increasing tapers, the sealing of the inner core of the hose can be better provided, the stability of the connection between the hose connector and the matching hose can be enhanced, and the installation and disassembly of the hose connector can be made more convenient.

[0017] 3. By setting multiple groups of gradually increasing fitting surfaces, the inner core of the hose can be better fitted during the extrusion process, reducing the deformation of the inner core of the hose during the extrusion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

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

[0020] Figure 2 It is a front view of the inner core of the hose in the utility model;

[0021] Figure 3 for Figure 2 A magnified view of middle;

[0022] Figure 4 It is a structural schematic diagram of the combination of the hose inner core and the hose connector in the utility model.

[0023] [Reference Signs]

[0024] 1. Inner core body; 2. Ring end; 3. Tooth groove; 4. Fitting surface; 5. Extension surface; 6. Groove; 7. Inter-tooth groove; 8. Outer sleeve; 9. Fixing part.

[0025] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0026] The following is a detailed description of a new hose inner core and hose connector for a PCW circulation system provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0027] Embodiment 1: Figure 1 and Figure 2As shown, an embodiment of the utility model provides a new type of hose inner core suitable for a PCW circulation system, comprising: an inner core body 1; a ring platform end 2, formed on one side of the inner core body 1, and a stepped groove 6 is formed on the inner core body 1 near the ring platform end 2; a toothed edge, located on the inner core body 1, for increasing the bite force and sealing between the inner core body 1 and the matching hose; the cross-section of the toothed edge is a plurality of trapezoids; wherein the inclination angle of the inclined surface of the toothed edge close to the ring platform end 2 is greater than the inclination angle of the inclined surface of the toothed edge away from the ring platform end 2; that is to say, the inclined surface of the toothed edge close to the ring platform end 2 is a large-angle inclined surface, and the inclined surface of the toothed edge away from the ring platform end 2 is a small-angle inclined surface, and the toothed edge with a cross-section of a plurality of trapezoids is for comparison with the toothed edge with a triangular cross-section in the prior art, so as to avoid the chamfer of the toothed edge being cut during the expansion and contraction process of the hose inner core under pressure, thereby causing the inner core to rupture and cause hose leakage.

[0028] See attached Figure 3 In some embodiments, the toothed edge includes tooth grooves 3 arranged between adjacent toothed edges, and the angle between the inclined surface of multiple groups of tooth grooves 3 close to the ring stage end 2 and the axis of the inner core body 1 is 30°; the angle between the inclined surface of each group of tooth grooves 3 away from the ring stage end 2 and the axis of the inner core body 1 is 45°.

[0029] Through the above-mentioned angle changes, the large-angle inclined surface can ensure that each set of trapezoidal section toothed edges can clamp the inner wall of the matching hose to prevent the matching hose from falling off, while the small-angle inclined surface facilitates the toothed edges of the trapezoidal section to pass through the matching hose.

[0030] In other embodiments, the angle between the inclined surface of each group of tooth grooves 3 away from the ring end 2 and the axis of the inner core body 1 decreases from the side close to the ring end to the side away from the ring end. The two bottom angles of the trapezoidal cross section of each group of tooth grooves 3 are between 15 degrees and 75 degrees. (Not shown in the figure)

[0031] By gradually reducing the large-angle inclination, it can adapt to the deformation of the outer sleeve 8 during the buckling and locking process. A larger-angle bevel is used at the front end where the deformation of the outer sleeve 8 is small, thereby preventing the matching hose from falling off; and a smaller-angle bevel is used at the rear end where the deformation of the outer sleeve 8 is large, thereby preventing leakage caused by cutting the matching hose.

[0032] It also includes: multiple groups of fitting surfaces 4, each group of tooth grooves 3 corresponds to a group of fitting surfaces 4, in some embodiments, the length of each group of fitting surfaces is equal and not less than 2mm; in other embodiments, the length of the fitting surface 4 of each group of tooth grooves 3 gradually increases from the side close to the ring platform end 2 to the side away from the ring platform end 2; multiple groups of gradually increasing fitting surfaces 4 can make the inner core of the hose fit better during the extrusion process, reduce the situation of cutting edges formed between the inner core body and the matching hose, and prevent the matching hose from being cut and damaged. .

[0033] It also includes: an extended surface 5, located on the tooth groove 3 farthest from the ring platform end 2, used to increase the length of the tail end of the hose inner core that fits with the matching hose; an extended fitting surface 4 is set on the tooth groove 3 farthest from the ring platform end 2, so that the connection between the hose inner core and the matching hose is more stable during installation.

[0034] like Figure 3 As shown, the length of each group of fitting surfaces 4 is greater than 2 mm; the lengths of multiple groups of fitting surfaces 4 are all greater than 2 mm in order to increase the contact area between the inner core of the hose and the matching hose, thereby ensuring the stability of the connection between the inner core of the hose and the matching hose.

[0035] Embodiment 2: Figure 4 As shown, the present application also provides a hose connector, comprising the above-mentioned hose inner core, and also comprising an outer sleeve 8, which is clamped and fixed at the step groove 6 on the inner core body 1; a fixing member 9, which can be a threaded sleeve, which is movably clamped in the step groove 6 and is used to connect the hose connector to other connecting parts; a press is used to squeeze one side of the outer sleeve 8 into the step groove 6 of the ring end 2, so that the outer sleeve 8 is fixed together with the hose inner core, and then the fixing member 9 connects and fixes the hose connector to other connecting parts.

[0036] like Figure 4 As shown, a plurality of groups of inter-tooth grooves 7 are formed on the inner side of the outer sleeve 8, and are located in the outer sleeve 8. The angle between the inclined surface of each group of inter-tooth grooves 7 on the side close to the ring platform end (2) and the axis of the outer sleeve (8) is 30°; the angle between the inclined surface of each group of inter-tooth grooves (7) on the side away from the ring platform end (2) and the axis of the outer sleeve (8) is 45°; and the plurality of groups of inter-tooth grooves 7 correspond to the plurality of groups of tooth grooves 3.

[0037] The technical solution provided by the utility model is that when the hose is connected to the hose connector, the matching hose is inserted into the gap between the hose inner core and the outer sleeve 8, and then the outer sleeve 8 is squeezed toward the hose inner core by using an extruder, thereby completing the connection between the hose connector and the matching hose, effectively preventing the matching hose from being cut while ensuring the connection between the hose connector and the matching hose.

[0038] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A new hose inner core suitable for PCW circulation system, characterized in that: include: Inner core body (1); The ring platform end (2) is formed on one side of the inner core body (1); the inner core body (1) is formed with a stepped groove (6) near the ring platform end (2); A toothed edge, located on the inner core body (1), for increasing the bite force and sealing performance between the inner core body (1) and the matching hose; The cross-section of the toothed edge is a plurality of trapezoids, wherein the inclination angle of the inclined surface of the toothed edge close to the ring platform end (2) is greater than the inclination angle of the inclined surface of the toothed edge away from the ring platform end (2).

2. The new hose inner core suitable for PCW circulation system according to claim 1 is characterized in that: The toothed edge comprises: A plurality of groups of tooth grooves (3), wherein the angle between the inclined surface of each group of tooth grooves (3) on the side close to the ring platform end (2) and the axis of the inner core body (1) is 30°; and the angle between the inclined surface of each group of tooth grooves (3) on the side away from the ring platform end (2) and the axis of the inner core body (1) is 45°.

3. The new hose inner core suitable for PCW circulation system according to claim 1 is characterized in that: The toothed edge comprises: A plurality of groups of tooth grooves (3), wherein the angle between the inclined surface of each group of tooth grooves (3) on the side away from the ring platform end (2) and the axis of the inner core body (1) decreases from the side close to the ring platform end to the side away from the ring platform end.

4. The new hose inner core suitable for PCW circulation system according to claim 3 is characterized in that: Also includes: A plurality of groups of fitting surfaces (4), each group of tooth grooves (3) corresponds to a fitting surface (4), and the length of the fitting surface (4) of each group of tooth grooves (3) gradually increases from a side close to the ring platform end (2) to a side away from the ring platform end (2).

5. The new hose inner core suitable for PCW circulation system according to claim 4 is characterized in that: Also includes: The extension surface (5) is located on the tooth groove (3) farthest from the ring platform end (2) and is used to increase the length of the tail end of the hose inner core to fit with the matching hose.

6. The new hose inner core suitable for PCW circulation system according to claim 4 is characterized in that: The length of each group of the fitting surfaces (4) is greater than 2 mm.

7. The new hose inner core suitable for PCW circulation system according to claim 6 is characterized in that: The two groups of bottom angles of the trapezoidal cross-section of each group of tooth grooves (3) are both between 15 degrees and 75 degrees.

8. A hose connector for use with the hose inner core according to any one of claims 1 to 7, characterized in that: It comprises an outer sleeve (8), wherein the outer sleeve (8) is clamped and fixed at a stepped groove (6) on the inner core body (1); The fixing member (9) is movably clamped and arranged at the step groove (6) and is used to connect the hose connector to other connecting members.

9. The hose connector according to claim 8, characterized in that Also includes: A plurality of groups of inter-tooth grooves (7) are formed in the outer sleeve (8), wherein the angle between the inclined surface of each group of inter-tooth grooves (7) on the side close to the ring platform end (2) and the axis of the outer sleeve (8) is 30°; and the angle between the inclined surface of each group of inter-tooth grooves (7) on the side away from the ring platform end (2) and the axis of the outer sleeve (8) is 45°.

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