A Y-type screen filter with coarse and fine two-stage filtering functions

Abstract

The utility model relates to filter technical field discloses a Y type net formula filter with coarse and fine two -stage filtering function, including the casing, the upper end fixedly connected with the cross pipe of casing, the inside of casing is provided with filter mechanism, the lower end of casing is connected with the bottom cover of screw thread, the filter mechanism includes the base, the top fixedly connected with filter bowl of base, the inner wall fixedly connected with the coarse filter screen of filter bowl, the upper end fixedly connected with the top seat of filter bowl, the inside of filter bowl is provided with filter bowl. The utility model discloses a filter bowl and filter bowl's nesting structure, realized the two -stage progressive filtration of coarse filter screen and fine filter screen, effectively shunted the impurity of different particle size, avoided single filter screen easy to block the problem, significantly prolonged the filtration cycle and life, and filter bowl and top seat adopt the thread connection, cooperate torsional block and can be quickly disassembled, and the cleaning maintenance of filter screen are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a Y-type mesh filter with coarse and fine two-stage filtration functions. Background Technology

[0002] Y-type filters are an indispensable filtration device in pipeline systems that transport media. They are typically installed at the inlet of pressure reducing valves, relief valves, level control valves, or other equipment to remove impurities from the media, protecting the valves and equipment from damage. Y-type filters are characterized by their advanced structure, low resistance, and convenient drainage. As a common pipeline filtration device, Y-type mesh filters are widely used in water supply, HVAC, and chemical industries.

[0003] Existing Y-type mesh filters typically employ a single-stage filter structure. In practical applications, due to the limited filtration accuracy of a single stage, fine particles can easily and quickly clog the filter mesh pores when dealing with fluids containing impurities of different particle sizes. This leads to decreased filtration efficiency, increased pressure drop, and frequent cleaning that affects the normal operation of the system. Therefore, a Y-type mesh filter with both coarse and fine filtration functions is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a Y-type mesh filter with coarse and fine two-stage filtration function. It aims to solve the problem that the existing Y-type mesh filters usually adopt a single-stage filter structure. In actual use, due to the limited filtration accuracy of the single stage, fine particles can easily clog the filter screen pores quickly for fluids containing impurities of different particle sizes, resulting in decreased filtration efficiency, increased pressure drop, and frequent cleaning affecting the normal operation of the system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a Y-type mesh filter with coarse and fine two-stage filtration function, comprising a housing, a horizontal tube fixedly connected to the upper end of the housing, a filtration mechanism provided inside the housing, and a bottom cover threadedly connected to the lower end of the housing;

[0006] The filtration mechanism includes a base, a filter cylinder is fixedly connected to the top of the base, a coarse filter screen is fixedly connected to the inner wall of the filter cylinder, a top seat is fixedly connected to the upper end of the filter cylinder, a filter cylinder is arranged inside the filter cylinder, a fine filter screen is fixedly connected to the inner wall of the filter cylinder, and an external thread is formed on the upper outer wall of the filter cylinder.

[0007] As a further description of the above technical solution: the upper end of the filter cylinder is threaded to the inner wall of the top seat, and a torsion block is fixedly connected to the bottom of the filter cylinder.

[0008] As a further description of the above technical solution: the outer wall of the base is fitted with a first sealing ring, and the outer wall of the top seat is fitted with a second sealing ring.

[0009] As a further description of the above technical solution: a drain port is provided at the bottom of the bottom cover, and a drain cover is threadedly connected to the outer wall of the drain port.

[0010] As a further description of the above technical solution: the lower end of the base abuts against the inner wall of the bottom cover, and the inner wall of the base is provided with an anti-loosening mechanism.

[0011] As a further description of the above technical solution: the anti-loosening mechanism includes a slider, the outer wall of which is slidably connected to the inner wall of the base, and a locking rod is fixedly connected to the inner wall of the slider.

[0012] As a further description of the above technical solution: a spring is sleeved on the outer wall of the locking rod, one end of the spring abuts against the inner wall of the base, and the other end of the spring abuts against the left wall of the slider.

[0013] As a further description of the above technical solution: a push block is fixedly connected to the bottom of the slider, a lock hole is opened on the outer wall of the base, and the right end of the lock rod is inserted into the inner wall of the lock hole.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by adopting a nested structure of filter cylinders, a two-stage progressive filtration of coarse and fine filter screens is achieved, which effectively separates impurities of different particle sizes, avoids the problem of easy clogging of a single filter screen, and significantly extends the filtration cycle and service life. At the same time, the filter cylinder and the top seat are connected by threads, and can be quickly disassembled and assembled with the twisting block, which facilitates the cleaning and maintenance of the filter screen.

[0016] 2. In this utility model, the spring drives the slider and the locking rod, so that the right end of the locking rod is automatically inserted into the locking hole at the lower end of the filter cylinder to lock the filter cylinder. This effectively overcomes the problem of filter cylinder loosening or rotation caused by pipeline vibration and fluid impact, and ensures the stability and sealing of the filter mechanism during long-term operation. Attached Figure Description

[0017] Figure 1 This is a front view of a Y-type mesh filter with coarse and fine two-stage filtration function proposed in this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the housing of a Y-type mesh filter with coarse and fine two-stage filtration function proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the filter cartridge structure of a Y-type mesh filter with coarse and fine two-stage filtration function proposed in this utility model;

[0020] Figure 4A schematic diagram of the cross-sectional structure of the filter cartridge of a Y-type mesh filter with coarse and fine two-stage filtration function proposed in this utility model;

[0021] Figure 5 This is a schematic diagram showing the separation of the filter cartridge and the filter cylinder of a Y-type mesh filter with coarse and fine two-stage filtration function proposed in this utility model.

[0022] Figure 6 This invention proposes a Y-type mesh filter with both coarse and fine filtration functions. Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Legend:

[0024] 1. Housing; 2. Filtering mechanism; 201. Base; 202. Filter cartridge; 203. Top seat; 204. Coarse filter screen; 205. Filter cartridge; 206. Fine filter screen; 207. First sealing ring; 208. Second sealing ring; 209. External thread; 210. Torque block; 3. Anti-loosening mechanism; 301. Slider; 302. Locking rod; 303. Push block; 304. Spring; 305. Locking hole; 4. Horizontal tube; 5. Bottom cover; 6. Drain cover; 7. Drain port. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 - Figure 2 An embodiment of this utility model is provided: a Y-type mesh filter with coarse and fine two-stage filtration function, including a housing 1, a horizontal tube 4 fixedly connected to the upper end of the housing 1, a filtration mechanism 2 provided inside the housing 1, and a bottom cover 5 threadedly connected to the lower end of the housing 1.

[0027] Reference Figure 3 - Figure 5The filter mechanism 2 includes a base 201, a filter cartridge 202 fixedly connected to the top of the base 201, a coarse filter screen 204 fixedly connected to the inner wall of the filter cartridge 202, a top seat 203 fixedly connected to the upper end of the filter cartridge 202, a filter cartridge 205 disposed inside the filter cartridge 202, a fine filter screen 206 fixedly connected to the inner wall of the filter cartridge 205, and an external thread 209 provided on the outer wall of the upper end of the filter cartridge 205. The external thread 209 facilitates the threaded connection of the upper end of the filter cartridge 205 into the top seat 203, which facilitates the fixing of the upper end of the filter cartridge 205. The coarse filter screen 204 and the fine filter screen 206 are used to achieve the two-stage filtration function of coarse and fine filtration, avoiding the problem of clogging that is easily caused by traditional single filter screens.

[0028] The upper end of the filter cylinder 205 is threaded to the inner wall of the top seat 203, and the bottom of the filter cylinder 205 is fixedly connected to a torsion block 210. By rotating the torsion block 210, the filter cylinder 205 can be rotated, so that the upper end of the filter cylinder 205 can be removed from the top seat 203.

[0029] The outer wall of the base 201 is fitted with a first sealing ring 207, which can improve the sealing between the base 201 and the inner wall of the bottom cover 5. The outer wall of the top seat 203 is fitted with a second sealing ring 208, which can improve the sealing between the top seat 203 and the inner wall of the housing 1.

[0030] The bottom of the bottom cover 5 is provided with a drain port 7, and the outer wall of the drain port 7 is threaded with a drain cover 6. The drain port 7 allows the discharge of dirt and impurities intercepted by the fine filter screen 206.

[0031] The lower end of the base 201 abuts against the inner wall of the bottom cover 5. The inner wall of the base 201 is provided with an anti-loosening mechanism 3. The anti-loosening mechanism 3 can lock the lower end of the filter cartridge 205 to prevent the filter cartridge 205 from becoming loose due to pipe vibration and water flow impact.

[0032] Reference Figure 4 - Figure 6 The anti-loosening mechanism 3 includes a slider 301, the outer wall of which is slidably connected to the inner wall of the base 201, and a locking rod 302 is fixedly connected to the inner wall of the slider 301. The slider 301 can limit and guide the locking rod 302.

[0033] A spring 304 is fitted on the outer wall of the locking rod 302. One end of the spring 304 abuts against the inner wall of the base 201, and the other end of the spring 304 abuts against the left wall of the slider 301. The spring 304 can push the slider 301 to move, so that its locking rod 302 can be inserted into the locking hole 305 on the lower outer wall of the filter cylinder 205.

[0034] A push block 303 is fixedly connected to the bottom of the slider 301. A lock hole 305 is provided on the outer wall of the base 201. The right end of the locking rod 302 is inserted into the inner wall of the lock hole 305. The push block 303 allows the user to push the slider 301 to drive the locking rod 302 out of the lock hole 305 and release the lock on the filter cylinder 205. After the lock is released, the filter cylinder 205 can be rotated by rotating the torsion block 210 to remove the filter cylinder 205 from the top seat 203.

[0035] Working principle: Fluid enters the interior of housing 1 from one end of horizontal tube 4, undergoes primary filtration through coarse filter screen 204 on the inner wall of filter cartridge 202, intercepting larger particles of impurities. The fluid after coarse filtration enters the annular space between filter cartridge 202 and filter cartridge 205, and then passes through fine filter screen 206 on the inner wall of filter cartridge 205 for fine filtration. Finally, the clean fluid flows out from the other end of horizontal tube 4 at the upper end of housing 1. When a large amount of impurities are intercepted by fine filter screen 206, the drain cover 6 at the bottom of bottom cover 5 can be opened to allow the dirt to be discharged from drain port 7. When it is necessary to disassemble filter cartridge 205, the user can first remove the filter cartridge... 202 is removed from the inside of the housing 1, and then the push block 303 of the anti-loosening mechanism 3 is pushed, so that the slider 301 slides on the inner wall of the base 201 and compresses the spring 304, which drives the right end of the locking rod 302 to disengage from the locking hole 305 on the lower outer wall of the filter cylinder 205, thus releasing the lock. Then, the torsion block 210 at the bottom of the filter cylinder 205 is rotated, and the filter cylinder 205 is screwed out from the inner wall of the top seat 203 through the external thread 209, so that the fine filter screen 206 can be cleaned. The first sealing ring 207 on the outer wall of the base 201 and the second sealing ring 208 on the outer wall of the top seat 203 respectively ensure the seal with the bottom cover 5 and the inner wall of the housing 1.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A Y-type mesh filter with coarse and fine two-stage filtration function, comprising a housing (1), characterized in that: A horizontal tube (4) is fixedly connected to the upper end of the housing (1), a filter mechanism (2) is provided inside the housing (1), and a bottom cover (5) is threadedly connected to the lower end of the housing (1). The filtration mechanism (2) includes a base (201), a filter cylinder (202) is fixedly connected to the top of the base (201), a coarse filter screen (204) is fixedly connected to the inner wall of the filter cylinder (202), a top seat (203) is fixedly connected to the upper end of the filter cylinder (202), a filter cylinder (205) is provided inside the filter cylinder (202), a fine filter screen (206) is fixedly connected to the inner wall of the filter cylinder (205), and an external thread (209) is provided on the outer wall of the upper end of the filter cylinder (205).

2. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 1, characterized in that: The upper end of the filter cylinder (205) is threaded to the inner wall of the top seat (203), and a torsion block (210) is fixedly connected to the bottom of the filter cylinder (205).

3. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 1, characterized in that: The outer wall of the base (201) is fitted with a first sealing ring (207), and the outer wall of the top seat (203) is fitted with a second sealing ring (208).

4. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 1, characterized in that: The bottom of the bottom cover (5) is provided with a drain port (7), and the outer wall of the drain port (7) is threaded with a drain cover (6).

5. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 1, characterized in that: The lower end of the base (201) abuts against the inner wall of the bottom cover (5), and the inner wall of the base (201) is provided with an anti-loosening mechanism (3).

6. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 5, characterized in that: The anti-loosening mechanism (3) includes a slider (301), the outer wall of which is slidably connected to the inner wall of the base (201), and a locking rod (302) is fixedly connected to the inner wall of the slider (301).

7. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 6, characterized in that: A spring (304) is fitted on the outer wall of the locking rod (302). One end of the spring (304) abuts against the inner wall of the base (201), and the other end of the spring (304) abuts against the left wall of the slider (301).

8. A Y-type mesh filter with coarse and fine two-stage filtration function according to claim 7, characterized in that: The bottom of the slider (301) is fixedly connected to a push block (303), and the outer wall of the base (201) is provided with a lock hole (305). The right end of the locking rod (302) is inserted into the inner wall of the lock hole (305).

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