CN219735677U

CN219735677U - Drying filter

Info

Publication number: CN219735677U
Application number: CN202321294786.3U
Authority: CN
Inventors: 张碧波; 潘斌斌; 张国波
Original assignee: Zhejiang Dingnuo Energy Equipment Co ltd
Current assignee: Zhejiang Dingnuo Energy Equipment Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-09-22
Anticipated expiration: 2033-05-26

Abstract

The utility model provides a dry filter, which is characterized in that: the device comprises a barrel, a front end cover and a rear end cover, wherein a front blocking net is arranged in the front end cover or at the front end of the barrel, and a rear blocking net is arranged in the rear end cover or at the rear end of the barrel; a drying unit is arranged in the cylinder body, and an elastic piece is arranged between the drying unit and the rear baffle; the filter unit is provided with a functional groove and a containing groove, the elastic piece is arranged in the containing groove, one end of the elastic piece is propped against the bottom of the containing groove, the other end is propped against the rear baffle, the elastic piece is used for propping up the drying unit, and one end of the drying unit provided with the functional groove is propped against the front filter screen on the inner side of the front baffle. In the utility model, the elastic piece is used for propping the drying unit, so that the drying unit can be kept stable all the time in the working process of the system, the filtering effect is improved, and the gas entering the drying filter can be filtered for a plurality of times on the front screen, the front filter screen, the drying unit and the rear screen, thereby effectively completing the impurity filtering and the moisture absorption, and having very good impurity removing and drying effects.

Description

Drying filter

Technical Field

The utility model belongs to the technical field of refrigerating system pipeline filtering devices, and particularly relates to a dry filter.

Background

In refrigerant systems, there are many harmful substances entering the pipeline through various routes, and there are several common ones: production or maintenance process: the refrigerant system is opened to the outside, water and dust inevitably enter the system pipeline, and a copper-oxygen film and even welding slag can be generated if the welding process is not protected in place. Therefore, the refrigerant before entering the expansion valve in the refrigeration cycle system must be clean and dry, and dirt and moisture in the pipeline of the refrigeration system must be filtered and removed to protect important components such as the expansion valve and the compressor, otherwise, more dirt can cause the blockage of the expansion valve, and more moisture can cause ice blockage. Typically, a dry filter is installed before the expansion valve to remove impurities such as rust and slag, and to remove moisture. In the prior art, as disclosed in patent CN 214891989U, a drying filter for refrigeration equipment, which is easy to clean, has a single structure, and in the using process, the drying and filtering functions are mainly realized through a drying filter core and filter screens at two ends of the drying filter core, so that the performance is limited, the using effect is not ideal, and therefore, the existing drying filter needs to be improved.

Disclosure of Invention

In view of the above, the present utility model is directed to overcoming the defects in the prior art, and proposes a dry filter.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a dry filter comprises a cylinder body, wherein the front part of the cylinder body is provided with a front end cover, the rear part of the cylinder body is provided with a rear end cover, a front blocking net is arranged in the front end cover or at the front end of the cylinder body, and a rear blocking net is arranged in the rear end cover or at the rear end of the cylinder body; a drying unit is arranged in the cylinder body, and an elastic piece is arranged between the drying unit and the rear baffle; the filter unit is equipped with the functional groove towards front end housing one side, is equipped with the accommodation groove towards rear end housing one side, and the elastic component is laid in the accommodation groove, and its one end supports the tank bottom of accommodation groove, and the other end supports the backplate, and the drying unit is tightly supported by the elastic component, makes the drying unit be equipped with the front filter screen of the inboard of functional groove's one end support front baffle.

Further, the functional groove is in a horn mouth shape.

Further, the elastic member includes a compression spring axially conforming to the cylinder.

Further, the front filter screen comprises a stainless steel wire filter screen.

Further, the filter cotton is needle punched cotton.

Further, the clearance between the drying unit and the inner wall of the cylinder forms an annular cavity, and filter cotton is arranged in the annular cavity, and the clearance between the drying unit and the inner wall of the cylinder is usually 5-10mm.

Further, the drying unit includes a dry particulate molecular sieve.

Further, copper connectors are arranged on the front end cover and the rear end cover.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, the elastic piece is used for propping against the drying unit, so that the drying unit can be kept stable all the time in the working process of the system, mixed gas entering the cylinder body from the inlet side of the front end cover can directly enter the functional groove of the drying unit, the contact area between the gas and molecular sieve particles in the drying unit is effectively increased through the functional groove, the filtering effect is improved, the gas enters the rear-stage filter cavity after being filtered by the drying unit, and the gas entering the drying filter can be filtered for multiple times by the front screen, the front filter screen, the drying unit and the rear screen, so that the impurity filtering and moisture absorption can be effectively finished, and the impurity removing and drying effects are very good.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute an undue limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a portion of a drying unit in accordance with an embodiment of the present utility model;

fig. 3 is a schematic view of a barrel portion in an embodiment of the utility model.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

1-3, including barrel 1, barrel front portion is equipped with front end housing 2, the rear portion is equipped with rear end housing 3, and in the front end housing or barrel front end be equipped with preceding fender net 4, in the rear end housing or barrel rear end be equipped with back fender net 5, preceding, the rear end housing is easily dismantled, be convenient for clear up, especially preceding shelves net dress is in the front end housing, when back fender net dress is in the rear end housing, only need with preceding, the rear end housing is torn down the back and directly clear up preceding, the back keeps off the net, then pull out the drying unit, clear up or change can, the operation is very convenient, overhaul maintenance is efficient, it is effectual.

A drying unit 6 is arranged in the cylinder body, and an elastic piece 8 is arranged between the drying unit and the rear baffle. The drying unit and the back screen form a back stage filter chamber 12. By way of example, the elastic element comprises a compression spring which axially coincides with the cylinder.

The filter unit is equipped with functional groove 9 towards front end housing one side, is equipped with accommodation groove 10 towards rear end housing one side, and the elastic component is laid in the accommodation groove, and its one end supports the tank bottom of accommodation groove, and the other end supports the backplate, and it is tight to push up the drying unit by the elastic component, makes the one end that the drying unit was equipped with functional groove support the inboard leading filter screen 7 of preceding baffle, and specifically, the elastic component can block in accommodation groove department, also can fix on the backplate, as long as can keep the elastic component stable in structure can.

The functional groove on the drying unit is in a horn mouth shape, and the opening end of the functional groove corresponds to the inlet of the front end cover, so that the efficiency and the effect of moisture absorption and water removal of the drying unit are greatly improved. When the instantaneous pressure in the filter is large due to blockage or other conditions, the filter screen part of the filter element in the prior art is impacted greatly, so that the stability of a pipeline is affected, and once the filter element or the filter screen is blocked, the pipeline of the whole refrigeration system is directly caused to be unsmooth, so that the basic use function of the refrigeration system is affected, and meanwhile, a certain safety risk exists. In a further improved scheme, the filter cotton 11 can be arranged in the annular cavity, the annular cavity 13 is formed by the gap between the drying unit and the inner wall of the cylinder body, and the contact area between the gas in the pipeline of the refrigeration system and the drying unit is effectively increased by the annular cavity.

Based on the structural design, in the scheme that is equipped with the filter pulp, even the drying unit takes place to block up or the condition that air current pressure suddenly increases, the drying unit atress produces the displacement of back screen one side for the drying unit separates with preceding screen, and produces the gas clearance at the two, and gaseous back level filter chamber that discharges through the ring chamber, because the gas that gets into the ring chamber can filter through the filter pulp, consequently, guaranteed the reliability of use equally.

Typically, the pre-filter comprises a stainless steel wire filter. The filter cotton is needle punched cotton. The gap between the drying unit and the inner wall of the cylinder body is 5-10mm. The drying unit comprises a dry particulate molecular sieve, and in particular, the molecular sieve desiccant particles may be bonded or pressed into the shape required to create the drying unit of the present utility model. The inlet of the front end cover and the outlet of the rear end cover are both provided with copper connectors for detachably connecting pipelines of the refrigerating system, so that the front end cover is very convenient to detach, overhaul and maintain.

The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dry filter, characterized in that: the device comprises a barrel, wherein the front part of the barrel is provided with a front end cover, the rear part of the barrel is provided with a rear end cover, a front blocking net is arranged in the front end cover or at the front end of the barrel, and a rear blocking net is arranged in the rear end cover or at the rear end of the barrel; a drying unit is arranged in the cylinder body, and an elastic piece is arranged between the drying unit and the rear baffle; the filter unit is equipped with the functional groove towards front end housing one side, is equipped with the accommodation groove towards rear end housing one side, and the elastic component is laid in the accommodation groove, and its one end supports the tank bottom of accommodation groove, and the other end supports the backplate, and the drying unit is tightly supported by the elastic component, makes the drying unit be equipped with the front filter screen of the inboard of functional groove's one end support front baffle.

2. A dry filter as claimed in claim 1, wherein: the functional groove is in a horn mouth shape.

3. A dry filter as claimed in claim 1, wherein: the elastic piece comprises a compression spring, and the axial direction of the compression spring is consistent with that of the cylinder body.

4. A dry filter as claimed in claim 1, wherein: the front filter screen comprises a stainless steel wire filter screen.

5. A dry filter as claimed in claim 1, wherein: the gap between the drying unit and the inner wall of the cylinder forms an annular cavity, and filter cotton is arranged in the annular cavity.

6. A dry filter as claimed in claim 5, wherein: the gap between the drying unit and the inner wall of the cylinder body is 5-10mm.

7. A dry filter as claimed in claim 1, wherein: the drying unit includes a dry particulate molecular sieve.

8. A dry filter as claimed in claim 1, wherein: the front end cover and the rear end cover are respectively provided with a copper joint.