Dry filter with double-layer filtering device

Abstract

The utility model relates to the technical field of dry filters, and discloses a dry filter of a double-layer filtering device, which comprises a dry filter shell, a thread bushing is fixedly connected to the surface of the dry filter shell, an installation assembly is in threaded connection with the surface of the thread bushing, and the installation assembly comprises an installation cover. An air inlet pipe is fixedly connected to the top of the mounting cover, a mounting plate is fixedly connected to the inner wall of the mounting cover, a limiting clamping table is fixedly connected to the top of the mounting plate, a clamping block is clamped in the limiting clamping table, a metal filter plate is fixedly connected to the surface of the clamping block, and a first polyester filter pad is clamped in the mounting cover. According to the utility model, the threaded sleeve is arranged, the mounting cover is screwed out from the surface thread of the threaded sleeve, then the internal extrusion spring and the polyester filter pad I are taken out from the inside, and the metal filter plate clamped in the clamping block is taken out through the clamping block, so that the metal filter plate is convenient to clean and replace; and the drying effect in the whole drying filter is ensured.

Description

Technical Field

[0001] This utility model relates to the field of drying filter technology, specifically a drying filter for a double-layer filtration device. Background Technology

[0002] A refrigerant dryer filter is a common accessory in refrigerant piping systems. Its main function is to remove harmful substances from the system, adsorb moisture, filter impurities, and prevent ice and dirt blockage, thus protecting components such as the expansion valve and compressor. Its outer casing is typically made of copper tubing with tapered ends. The inlet and outlet ports can be of the same or different diameters; the inlet is a coarse metal mesh, and the outlet is a fine metal mesh. Internally, it contains a molecular sieve with excellent moisture absorption properties as a desiccant. In refrigeration systems, the refrigerant dryer filter is usually installed on the high-pressure liquid line between the condenser and the expansion valve, but it can also be installed on the suction line.

[0003] In contrast, the dryer filter of a typical large central air conditioner is usually a one-piece casting with the mounting cover and the housing. When the internal metal filter plate becomes clogged, only the whole filter can be replaced, and the inside cannot be cleaned. In contrast, the dryer filter that can be disassembled has the metal filter plate fixed inside the mounting cover, and only the filter element can be replaced. When it is damaged, the metal filter plate cannot be replaced. Utility Model Content

[0004] To at least partially solve the above-mentioned technical problems, this utility model provides a dryer filter for a double-layer filtration device, including a dryer filter housing, a threaded sleeve fixedly connected to the surface of the dryer filter housing, and an installation component threadedly connected to the surface of the threaded sleeve;

[0005] The mounting assembly includes a mounting cover, an air inlet pipe fixedly connected to the top of the mounting cover, a mounting plate fixedly connected to the inner wall of the mounting cover, a limiting bracket fixedly connected to the top of the mounting plate, a locking block locked inside the limiting bracket, a metal filter plate fixedly connected to the surface of the locking block, a polyester filter pad locked inside the mounting cover, and a compression spring provided inside the mounting cover.

[0006] The above technical solution involves setting a threaded sleeve, unscrewing the mounting cover from the surface of the threaded sleeve, and then removing the compression spring and polyester filter pad inside. The metal filter plate inside the locking block is then removed using a locking block, facilitating the cleaning and replacement of the metal filter plate and ensuring the overall drying effect inside the dryer filter.

[0007] As a further improvement to the above solution, the mounting cover is threaded to the surface of the threaded sleeve, and the limiting plate is located at the end away from the air intake pipe.

[0008] As a further improvement to the above solution, the number of limiting card platforms is set to four, and the limiting card platforms are symmetrically and evenly distributed around the top center of the mounting plate. One end of the polyester filter pad near the air inlet pipe is in contact with the surface of the metal filter plate.

[0009] The above technical solution, with four limiting clamps symmetrically and evenly distributed around the top center of the mounting plate, ensures greater stability of the clamped metal filter plate, preventing it from easily shifting during filtration. The polyester filter pad, with one end near the inlet pipe in contact with the surface of the metal filter plate, allows for preliminary filtration of the incoming gas, improving filtration efficiency.

[0010] As a further improvement to the above solution, the end of the compression spring near the air inlet pipe is in contact with the surface of the polyester filter pad.

[0011] With the above technical solution, the end of the compression spring near the air inlet pipe contacts the surface of the polyester filter pad. The compression spring can apply a certain pressure to the polyester filter pad, making the polyester filter pad fit more tightly with the metal filter plate, preventing gas from passing through the gaps without filtration, thereby ensuring the effectiveness of filtration.

[0012] As a further improvement to the above solution, a filter element is provided inside the dryer filter housing, a sealing cover is fixedly connected to the output end of the dryer filter housing, an air outlet pipe is fixedly connected to the output end of the sealing cover, an inner fixing plate is fixedly connected to the inner wall of the air outlet pipe, and a polyester filter pad is provided inside the sealing cover.

[0013] With the above technical solution, by setting polyester filter pad one and polyester filter pad two, the gas enters the interior of the mounting cover through the air inlet pipe, then filters large dust particles through the metal filter plate, and then filters again through polyester filter pad one. After filtration, the gas absorbs internal moisture through the filter element, and finally filters through polyester filter pad two before being discharged through the air outlet pipe, ensuring that the gas inside the drying filter is fully dried.

[0014] As a further improvement to the above solution, the end of the compression spring near the air outlet pipe is in contact with the filter element.

[0015] With the above technical solution, the end of the compression spring near the air outlet pipe contacts the filter element. The compression spring applies pressure to the filter element to ensure that the filter element remains stable during operation, preventing the filter element from shaking or shifting, thereby ensuring the stability of the filtration effect.

[0016] As a further improvement to the above solution, the second polyester filter pad is located between the inner fixing plate and the filter element.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model uses a threaded sleeve to unscrew the mounting cover from the surface of the threaded sleeve, and then removes the compression spring and polyester filter pad inside. The metal filter plate inside the locking block can be removed by using a locking block, which facilitates the cleaning and replacement of the metal filter plate and ensures the drying effect inside the overall dry filter.

[0019] This utility model incorporates two polyester filter pads. Gas enters the interior of the mounting cover through the inlet pipe, then passes through a metal filter plate to filter large dust particles, and then passes through the first polyester filter pad for further filtration. After filtration, the gas passes through a filter element to absorb internal moisture, and then passes through the second polyester filter pad for final filtration before being discharged through the outlet pipe, ensuring that the gas inside the drying filter is fully dried. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal disassembled structure of the mounting cover of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the mounting cover of this utility model;

[0024] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A.

[0025] In the diagram: 1. Dryer filter housing; 2. Threaded sleeve; 3. Mounting assembly; 31. Mounting cover; 32. Air inlet pipe; 33. Mounting plate; 34. Limiting plate; 35. Locking block; 36. Metal filter plate; 37. Polyester filter pad one; 38. Compression spring; 4. Filter element; 5. Sealing cover; 6. Air outlet pipe; 7. Inner fixing plate; 8. Polyester filter pad two. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figure 1-5The dryer filter of the dual-layer filtration device in this embodiment includes a dryer filter housing 1, a threaded sleeve 2 fixedly connected to the surface of the dryer filter housing 1, and an installation component 3 threadedly connected to the surface of the threaded sleeve 2.

[0029] Mounting assembly 3 includes a mounting cover 31, an air inlet pipe 32 fixedly connected to the top of the mounting cover 31, a mounting plate 33 fixedly connected to the inner wall of the mounting cover 31, a limiting bracket 34 fixedly connected to the top of the mounting plate 33, a locking block 35 locking inside the limiting bracket 34, a metal filter plate 36 fixedly connected to the surface of the locking block 35, a polyester filter pad 37 locking inside the mounting cover 31, and a compression spring 38 inside the mounting cover 31. The mounting cover 31 is unscrewed from the threaded sleeve 2, and then the compression spring 38 and the polyester filter pad 37 inside are removed from the inside. The metal filter plate 36 inside the locking block 35 is removed by the locking block, which facilitates the cleaning and replacement of the metal filter plate and ensures the drying effect inside the overall dryer filter.

[0030] The mounting cover 31 is threaded onto the surface of the threaded sleeve 2, and the limiting plate 34 is located at the end away from the intake pipe 32.

[0031] There are four limiting card platforms 34, which are symmetrically and evenly distributed around the top center of the mounting plate 33. The end of the polyester filter pad 37 near the air inlet pipe 32 is in contact with the surface of the metal filter plate 36.

[0032] The end of the compression spring 38 near the intake pipe 32 is in contact with the surface of the polyester filter pad 37.

[0033] The dryer filter housing 1 is equipped with a filter element 4 inside. A sealing cover 5 is fixedly connected to the output end of the dryer filter housing 1. An air outlet pipe 6 is fixedly connected to the output end of the sealing cover 5. An inner fixing plate 7 is fixedly connected to the inner wall of the air outlet pipe 6. A polyester filter pad 8 is installed inside the sealing cover 5. After filtration, the gas absorbs internal moisture through the filter element 4 and is finally filtered through the polyester filter pad 8 before being discharged through the air outlet pipe 6.

[0034] The end of the compression spring 38 near the air outlet pipe 6 is in contact with the filter element 4.

[0035] The polyester filter pad 28 is located between the inner fixing plate 7 and the filter element.

[0036] The implementation principle of the dryer filter of the dual-layer filtration device in this application embodiment is as follows: When the dryer filter is used, the gas first enters the interior of the mounting cover 31 through the air inlet pipe 32, then large dust particles are filtered through the metal filter plate 36, and then filtered again through the polyester filter pad 37. After filtration, the gas absorbs internal moisture through the filter element 4, and is finally filtered through the polyester filter pad 8 before being discharged through the air outlet pipe 6.

[0037] By using the threaded sleeve 2, the mounting cover 31 is unscrewed from the surface of the threaded sleeve 2, and then the compression spring 38 and the polyester filter pad 37 inside are removed from the inside. The metal filter plate 36 inside the locking block 35 is removed by using the locking block, which makes it easy to clean and replace the metal filter plate and ensure the drying effect inside the overall dry filter.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A dryer filter for a dual-layer filtration device, characterized in that: Includes a dryer filter housing (1), on which a threaded sleeve (2) is fixedly connected, and on which an installation component (3) is threadedly connected; The mounting assembly (3) includes a mounting cover (31), an air inlet pipe (32) is fixedly connected to the top of the mounting cover (31), a mounting plate (33) is fixedly connected to the inner wall of the mounting cover (31), a limiting bracket (34) is fixedly connected to the top of the mounting plate (33), a locking block (35) is locked inside the limiting bracket (34), a metal filter plate (36) is fixedly connected to the surface of the locking block (35), a polyester filter pad (37) is locked inside the mounting cover (31), and a compression spring (38) is provided inside the mounting cover (31).

2. The drying filter of the dual-layer filtration device according to claim 1, characterized in that: The mounting cover (31) is threaded onto the surface of the threaded sleeve (2), and the limiting plate (34) is located at the end away from the air intake pipe (32).

3. The drying filter of the dual-layer filtration device according to claim 1, characterized in that: The number of the limiting card platform (34) is set to four, and the limiting card platform (34) is symmetrically and evenly distributed around the top center of the mounting plate (33). The end of the polyester filter pad (37) near the air inlet pipe (32) is in contact with the surface of the metal filter plate (36).

4. The drying filter of the dual-layer filtration device according to claim 1, characterized in that: The end of the compression spring (38) near the air inlet pipe (32) is in contact with the surface of the polyester filter pad (37).

5. A dryer filter of a dual-layer filtration device according to any one of claims 1-4, characterized in that: The filter housing (1) is provided with a filter element (4) inside. A sealing cover (5) is fixedly connected to the output end of the filter housing (1). An air outlet pipe (6) is fixedly connected to the output end of the sealing cover (5). An inner fixing plate (7) is fixedly connected to the inner wall of the air outlet pipe (6). A polyester filter pad (8) is provided inside the sealing cover (5).

6. The drying filter of the dual-layer filtration device according to claim 5, characterized in that: The end of the compression spring (38) near the air outlet pipe (6) is in contact with the filter element (4).

7. The drying filter of the dual-layer filtration device according to claim 5, characterized in that: The second polyester filter pad (8) is located between the inner fixing plate (7) and the filter element.

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