Stainless steel pipeline piece with variable-diameter structure

Abstract

The stainless steel pipeline piece comprises a transition pipe, a filtering piece and a mounting base, the transition pipe comprises a large-diameter section, a small-diameter section and a transition section between the large-diameter section and the small-diameter section, the transition section comprises a small-diameter part and a large-diameter part, the small-diameter part and the large-diameter part are connected through the transition section, and the large-diameter section and the small-diameter section are each of a straight-barrel-shaped structure; the large-diameter part and the small-diameter part are both of conical cylindrical structures; the small-diameter part of the transition section is connected with the small-diameter section, and the large-diameter part of the transition section is connected with the large-diameter section; the filtering part comprises a fixing frame and a filtering net bag on the fixing frame, the filtering net bag extends from one side of the large-diameter part of the transition section to one side of the small-diameter part of the transition section, and the filtering part is limited in the transition section by abutting against the fixing frame of the filtering part through a mounting seat mounted on the large-diameter section, so that a filtering gap is formed between the filtering part and the inner wall of the transition section; a supporting structure for supporting the end part of the filter net bag is arranged on the inner wall of the small-diameter part. The pipeline piece is good in stability and long in service life during use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning refrigeration pipeline, in particular to a variable diameter structure stainless steel pipeline fitting. BACKGROUND

[0002] An air conditioning system is a system for artificially processing the temperature, humidity, cleanliness and air flow rate of indoor air, which can make certain places obtain air with certain temperature, humidity and air quality to meet the requirements of users and production processes and improve indoor climate conditions. The variable diameter pipe is a commonly used pipe in the air conditioning pipeline. Since the variable diameter pipe forms a sudden change of pipe diameter, the pipe diameter changes greatly at the sudden change position, and the structure stability is poor. At the same time, the pipeline fitting with variable diameter structure is not conducive to the installation of the filter screen, and the ordinary mesh filter screen has poor durability, which is easy to cause blockage if not replaced or cleaned in time. Therefore, it is necessary to improve the existing pipeline fitting. SUMMARY

[0003] Therefore, the present application aims to overcome the defects in the prior art and provides a variable diameter structure stainless steel pipeline fitting.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A variable diameter structure stainless steel pipeline fitting, comprising a transition pipe, a filter and a mounting seat, the transition pipe comprises a large diameter section, a small diameter section and a transition section between the two, the transition section comprises a small diameter part and a large diameter part, and the two are connected by a transition part, the large diameter section and the small diameter section are both straight cylindrical structures, and the large diameter part and the small diameter part are both conical cylindrical structures; the small diameter part of the transition section is connected with the small diameter section, and the large diameter part is connected with the large diameter section; the filter comprises a fixed frame and a filter pocket on the fixed frame, the filter pocket extends from the large diameter part side to the small diameter part side of the transition section, and the filter is limited in the transition section by the mounting seat mounted on the large diameter section and abutting against the fixed frame of the filter, so that a filter gap is formed between the filter and the inner wall of the transition section, and a support structure is arranged on the inner wall of the small diameter part for supporting the end of the filter pocket.

[0006] Further, the smallest diameter of the small diameter part is connected with the small diameter section, and the inner diameter of the smallest diameter of the small diameter part is the same as the inner diameter of the small diameter section.

[0007] Further, the largest diameter of the large diameter part is connected with the large diameter section, and the inner diameter of the largest diameter of the large diameter part is the same as the inner diameter of the large diameter section.

[0008] Further, the support structure comprises a support ring, the outer wall of the support ring is fixed with the inner wall of the small diameter part through a plurality of connecting rods, and the inner wall of the support ring abuts against the outer surface of the filter pocket.

[0009] Further, each support rod is arranged uniformly with the support ring axis as the center.

[0010] Further, the taper of the large diameter part and the small diameter part is the same.

[0011] Further, the small diameter part and the transition part are smoothly connected, and the transition part and the large diameter part are smoothly connected.

[0012] Further, the small diameter section and the transition section are smoothly connected, and the transition section and the large diameter section are smoothly connected.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application has a reasonable structure design. The transition part is composed of the large diameter part with a conical structure and the small diameter part with a conical structure. The transition part is arranged between the large diameter part and the small diameter part, so that the impact of the medium on the transition part is weakened, the stability of the pipeline component during use is improved, and the service life of the pipeline component is prolonged. In addition, the filter component is fixed in the transition part by the mounting seat, and a filter gap is formed between the filter screen pocket of the filter component and the inner wall of the transition part, effectively increasing the filter area and prolonging the service life of the pipeline component. Long-term filtration is not easy to block. At the same time, the support structure for supporting the tail end of the filter screen pocket is arranged in the filter part, which improves the stability of the filter screen pocket and guarantees the filtering effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the application and are incorporated herein for purposes of illustration. The embodiments of the present application, and the specification are exemplary embodiments of the present application and are not intended to limit the present application in any way. In the drawings:

[0016] Figure 1 The structure schematic diagram of the present application;

[0017] Figure 2 The structure sectional view of the present application;

[0018] Figure 3 The schematic diagram of the transition pipe part in the present application;

[0019] Figure 4 The schematic diagram of the transition section part in the present application;

[0020] Figure 5 The schematic diagram of the filter component part in the present application;

[0021] Figure 6 The schematic diagram of the mounting seat part in the present application. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in the case of no conflict.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] A variable diameter structure stainless steel pipeline fitting, as shown in Figures 1 to 6 The variable diameter structure stainless steel pipeline fitting includes a transition pipe 1, a filter 2 and a mounting seat 3, the mounting seat is provided with a capillary tube 17 and a condenser liquid outlet pipe 18; the filter includes a fixed frame 10 and a filter mesh bag 11 on the fixed frame. The transition pipe includes a large diameter section 4, a small diameter section 5 and a transition section 6 between the two, as an example, the mounting seat is threadedly mounted on the inner wall of the large diameter section. The transition section includes a small diameter part 7 and a large diameter part 8, which are connected by a transition part 9, the large diameter section and the small diameter section are both straight cylindrical structures, and the large diameter part and the small diameter part are both conical cylindrical structures; the small diameter part of the transition section is connected with the small diameter section, and the large diameter part is connected with the large diameter section; generally, the taper of the large diameter part and the small diameter part is the same.

[0027] The filter screen bag extends from the large diameter section of the transition section to the small diameter section, and is limited in the transition section by the mounting seat installed on the large diameter section and abutting against the fixed frame of the filter element. In order to improve the stability of the filter element, in an optional embodiment, a positioning ring 16 is arranged on the inner wall of the transition section close to the large diameter section, and the fixed frame of the filter element is positioned by the positioning ring. The filter gap 12 is formed between the filter element and the inner wall of the transition section, and the support structure 13 is arranged on the inner wall of the small diameter section to support the end of the filter screen bag. As an example, the diameter of the filter screen bag gradually decreases from the side of the fixed frame to the tail end, so that the filter gap gradually decreases from the large diameter section to the small diameter section. Due to the filter gap formed between the outer surface of the filter screen bag and the inner wall of the transition section, the effective filtering area of the pipeline element is greatly increased.

[0028] The minimum diameter of the small diameter section is connected with the small diameter section, and the inner diameter of the minimum diameter of the small diameter section is the same as the inner diameter of the small diameter section. The maximum diameter of the large diameter section is connected with the large diameter section, and the inner diameter of the maximum diameter of the large diameter section is the same as the inner diameter of the large diameter section. The small diameter section and the transition section are smoothly connected, and the transition section and the large diameter section are smoothly connected.

[0029] In an optional embodiment, the support structure includes a support ring 14, and the outer wall of the support ring is fixed with the inner wall of the small diameter section by a plurality of connecting rods 15. As an example, each support rod is uniformly arranged around the axis of the support ring, so that the support ring structure is more stable. When the filter screen bag is fixed to the transition section by the mounting seat, the inner wall of the support ring abuts against the outer surface of the filter screen bag, so that the filter screen bag has good stability at both ends, and the filter screen bag can avoid stretching and deflection when the medium passes through the filter screen bag. The stretching deformation of the filter screen bag due to the medium fluctuation affects the service life, and the filter screen bag may be deflected when the medium fluctuates, which may abut against the inner wall of the transition section and affect the filtering effect.

[0030] Therefore, the rear end of the filter screen bag is effectively supported by the support structure, and the rear end of the filter screen bag is also limited by the support ring sleeved on the outer side of the filter screen bag, which effectively guarantees the stability of the rear structure of the filter screen bag. The fixed frame of the front end of the filter screen bag is fixed by the mounting seat, and the stability of the front structure of the filter screen bag is also reliably guaranteed.

[0031] It should be noted that the present application creates a transition section between the large diameter section and the small diameter section of the transition section. Generally, the transition section is in a straight cylindrical structure. The impact of the medium on the transition section is weakened by the transition section, and the long distance impact is divided into two parts. Since the transition section is arranged between the large diameter section and the small diameter section, the straight cylindrical structure of the transition section plays a role in stabilizing the liquid impact.

[0032] In a further improved scheme, the transition portion is conical, with a large-diameter end connected to the small-diameter portion of the transition section and a small-diameter end connected to the large-diameter portion of the transition section. Such a structure design causes the medium to form a "Venturi effect" at the position where the transition portion connects to the large-diameter portion when the medium flows fast, so that the medium enters the small-diameter portion more quickly, and the impact of the medium on the transition portion is further weakened.

[0033] The present application has a reasonable structure design. The transition portion is composed of a large-diameter portion and a small-diameter portion, and a transition portion is arranged between the large-diameter portion and the small-diameter portion. The impact of the medium on the transition portion is weakened, the stability of the pipeline component during use is improved, and the service life of the pipeline component is prolonged. In addition, the filter component is fixed in the transition portion by the mounting seat, and a filtering gap is formed between the filter screen pocket of the filter component and the inner wall of the transition portion, so that the filtering area is effectively increased, the service life of the pipeline component is prolonged, and the long-term filtering is not easy to be blocked. In addition, the support structure is arranged in the filter portion for supporting the tail end of the filter screen pocket, so that the stability of the filter screen pocket is improved, and the filtering effect is guaranteed.

[0034] The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A variable diameter structural stainless steel plumbing fitting, characterized by: The transition pipe, the filter and the mounting seat are included, the transition pipe includes a large diameter section, a small diameter section and a transition section between the two, the transition section includes a small diameter part and a large diameter part, and the two are connected by a transition part, the large diameter section and the small diameter section are straight cylinder structures, and the large diameter part and the small diameter part are conical cylinder structures; the small diameter part of the transition section is connected with the small diameter section, and the large diameter part is connected with the large diameter section; the filter includes a fixed frame and a filter mesh pocket on the fixed frame, the filter mesh pocket extends from one side of the large diameter part of the transition section to the small diameter part, the fixed frame of the filter is resisted by the mounting seat mounted on the large diameter section, the filter is limited in the transition section, a filter gap is formed between the filter and the inner wall of the transition section, and a support structure for supporting the end of the filter mesh pocket is arranged on the inner wall of the small diameter part.

2. A reducing structural stainless steel piping component as defined in claim 1, wherein: The minimum diameter of the small diameter part is connected with the small diameter section, and the inner diameter of the minimum diameter of the small diameter part is the same as the inner diameter of the small diameter section.

3. The reducing structural stainless steel piping component of claim 1, wherein: The maximum diameter of the large diameter part is connected with the large diameter section, and the inner diameter of the maximum diameter of the large diameter part is the same as the inner diameter of the large diameter section.

4. The reducing structural stainless steel piping component of claim 1, wherein: The support structure includes a support ring, the outer wall of the support ring is fixed with the inner wall of the small diameter part through a plurality of connecting rods, and the inner wall of the support ring resists the outer surface of the filter mesh pocket.

5. A reducing structural stainless steel piping component as defined in claim 4 wherein: Each support rod is uniformly arranged around the axis of the support ring.

6. The reducing structural stainless steel piping component according to claim 1, wherein: The taper of the large diameter part and the small diameter part is the same.

7. The reducing structural stainless steel piping component of claim 1, wherein: The small diameter part and the transition part are smoothly connected, and the transition part and the large diameter part are smoothly connected.

8. The reducing structural stainless steel piping component of claim 1, wherein: The small diameter section and the transition section are smoothly connected, and the transition section and the large diameter section are smoothly connected.

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