Two-stage filter for water inlet valve

Abstract

The utility model relates to a two-stage filter for a water inlet valve, the filter is inserted from an insertion port at the top of the water inlet valve and is disassembled, the filter is provided with a filter column and a lock catch, and the filter is disassembled by pushing and pulling the lock catch; the filter column comprises a fence and a filter cover which are integrally formed on a filter column base plate, the fence is obliquely arranged towards the water inlet direction and is in a suspended step shape, and the filter cover is in a conical column shape and gradually becomes larger downwards in the radial direction. The filter has the advantages of simple structure and convenience in cleaning filtered matters.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of two-stage filter for water inlet valve. BACKGROUND

[0002] Chinese patent CN210131439U discloses a kind of two-layer filter with flow limiting device, compared with the same type equipment, the two-layer filter is placed in the upper cavity of the lower filter body by stainless steel fine filter screen, the upper filter body and the lower filter body are connected by two side buckles, the plastic coarse filter screen is designed in the bottom of the lower filter body, realize two-layer filtering function, at the same time, the channel for connecting the coarse filter screen and the fine filter screen is set, and the flow limiting function is realized by designing the size of the channel.

[0003] Chinese patent CN210814113U discloses a kind of water inlet valve top filter convenient to disassemble, compared with similar products, the filter assembly can be directly disassembled by hand, the filter element includes a primary filter screen and a secondary filter screen, the primary filter screen is a coarse filter screen with larger filter hole inner diameter, and the secondary filter screen is a fine filter screen with smaller filter hole inner diameter, so that the filtering effect is better and the filter element is not easy to block.

[0004] However, the two-stage filter of these water inlet valves has complex structure, multiple installation procedures, high production cost, high cost, and the problem of cleaning the filtered material is also troublesome. SUMMARY

[0005] The utility model aims at above -mentioned problem, provide a kind of two-stage filter for water inlet valve with simple structure, it is convenient to clean the filtered material.

[0006] The utility model is realized in this way, a kind of two-stage filter for water inlet valve, filter is inserted from the insertion port of water inlet valve top and is disassembled, filter is equipped with filter column and lock catch, and filter is disassembled by push-pull lock catch;Filter column includes fence and filter cover integrally formed on filter column base plate, fence is arranged in inclined manner and presents suspended echelon shape towards water inlet direction, and filter cover presents conical column and gradually increases downwards radially.

[0007] The utility model is equipped with waist-shaped hole on both sides of the upper end of filter column, lock catch is equipped with pin shaft, lock catch is equipped with the clamping block matched with the blocking ring buckle on the top cover of insertion port;By push-pull lock catch, pin shaft slides along waist-shaped hole, so that clamping block is connected or separated from blocking ring buckle to disassemble filter.

[0008] The utility model is equipped with lock catch seat connected with filter column, lock catch seat is equipped with U-shaped shoulder, and the U-shaped shoulder of lock catch seat and the U-shaped shoulder arranged on the upper end of filter column are connected to form waist-shaped hole, so that pin shaft integrally formed on lock catch can be pre-assembled into the U-shaped shoulder of filter column.

[0009] The utility model discloses, the card slot of corresponding switch two gears is equipped on the downside of the lock catch, when the lock catch is pushed and pulled, the card slot of two gears respectively with the convex block of the top cap setting slide joint to limit the switch two actions of lock catch.

[0010] The utility model discloses, the protruding is equipped with in the front end extension of lock catch seat, and the filter is positioned assembly through the protruding and is positioned in the position slot of the top cap setting.

[0011] The utility model discloses, have following positive effect: through push and pull lock catch to filter dismounting more in line with traditional habit, the double -stage filter piece of filter column is integrally formed, and simple structure does not need to assemble, and the first -stage filter is filter cover, and the conical column is big gradually to the downward radial, and effective filtration and easy cleaning are utilized to the conical cover, and the second -stage filter is fence, and the gradient of the water inlet direction is set to the suspended terrace, and also effective filtration and easy cleaning, compared with similar products, and the filtering effect is better, because can clean frequently, more difficult to block.

[0012] The following embodiment combines the drawings to further illustrate the utility model. DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is Figure 1 The three-dimensional structure schematic diagram of the sub -piece of embodiment;

[0015] Figure 3 It is Figure 1 The three-dimensional structure schematic diagram of the filter of embodiment is installed on the top cap of insertion port;

[0016] Figure 4 It is the three-dimensional structure schematic diagram of the top cap of insertion port;

[0017] Figure 5 It is Figure 1 The three-dimensional structure schematic diagram of the filter of embodiment is unloaded state.

[0018] In the drawing, A, water inlet direction;1, filter column;2, lock catch;3, filter column base plate;4, fence;5, filter cover, 6, waist -shaped hole;7, pin shaft;8, baffle ring;9, clamping block;10, lock catch seat;11, card slot;12, convex block;13, protruding;14, position slot. Implementation

[0019] Refer to Figure 1 , Figure 2 and Figure 5The embodiment is a two-stage filter for a water inlet valve, the filter is inserted and disassembled from an insertion port at the top of the water inlet valve, the filter is provided with a filter column 1 and a lock catch 2, the filter is disassembled and assembled by pushing and pulling the lock catch, a clamping groove 11 corresponding to two positions of a switch is arranged at the lower side of the lock catch, when the lock catch is pushed and pulled, the clamping grooves of the two positions are respectively slidably clamped with protrusions 12 arranged on the top cover to limit two actions of the switch of the lock catch; the filter column is connected with a lock catch seat 10, the lock catch seat is provided with a U-shaped shoulder, a waist-shaped hole is formed by the U-shaped shoulder of the lock catch seat and a U-shaped shoulder arranged at the upper end of the filter column, a pin shaft integrally formed on the lock catch can be pre-entered from the U-shaped shoulder of the filter column to assemble the filter; a protrusion 13 is arranged at the front end of the lock catch seat, the filter is positioned and assembled by aligning the protrusion with a position recognition groove 14 arranged on the top cover; the filter column comprises a fence 4 and a filter cover 5 integrally formed on a filter column base plate 3, the fence is arranged in a suspended stepped shape in a slanting manner facing a water inlet direction A, and the filter cover is in a conical column shape and gradually increases in diameter in a radial direction downwards; a waist-shaped hole 6 is arranged at both sides of the upper end of the filter column, the lock catch is provided with a pin shaft 7, and the lock catch is provided with a clamping block 9 matched with a check ring 8 arranged on the top cover of the insertion port; by pushing and pulling the lock catch, the pin shaft slides along the waist-shaped hole, so that the clamping block is connected or separated from the check ring to disassemble and assemble the filter.

[0020] The utility model discloses, for convenient expression, Figure 1 、 Figure 2 And Figure 5 Structure diagram, the filter column is not installed sealing ring.

[0021] The utility model discloses, the clearance of the filter cover's fence is about two times of the clearance of the fence, thereby reaching the effect of step-by-step filtration, and it is not easy to block.

[0022] When the utility model works, the first-stage filter is the filter cover, mainly performs coarse filtration, and larger filter materials are blocked by the conical cover, the second-stage filter is the fence, mainly performs fine filtration, and small filter materials are hooked by the suspended stepped comb teeth, and it is very convenient to clean the filter materials on the comb teeth, the screening of the filter materials through two-stage filtration is more difficult to block than the traditional fence with only one-stage filtration, and the filtration effect is better.

Claims

1. A two-stage filter for a water inlet valve, the filter being insertable from and removable by an insertion opening in the top of the water inlet valve, characterised in that: The filter is provided with a filter column (1) and a lock (2), and the filter is disassembled by pushing and pulling the lock; the filter column comprises a fence (4) and a filter cover (5) which are integrally formed on a filter column base plate (3), the fence is obliquely arranged in a suspended step shape facing the water inlet direction (A), and the filter cover is in a conical column shape and gradually increases in diameter in a radial direction downward.

2. The dual stage filter for a water inlet valve of claim 1, wherein: Waist-shaped holes (6) are arranged on both sides of the upper end of the filter column, the lock is provided with a pin shaft (7), the lock is provided with a clamping block (9) which is matched with a blocking ring (8) on the insertion port top cover, the filter is disassembled by pushing and pulling the lock, the pin shaft slides along the waist-shaped hole, and the clamping block is connected or separated from the blocking ring.

3. The dual stage filter for a water inlet valve of claim 2, wherein: The filter column is connected with a lock seat (10), the lock seat is provided with a U-shaped shoulder, the waist-shaped hole is formed by the butt joint of the U-shaped shoulder of the lock seat and the U-shaped shoulder arranged on the upper end of the filter column, and the pin shaft integrally formed on the lock can be pre-entered from the U-shaped shoulder of the filter column to assemble the filter.

4. The dual stage filter for a water inlet valve of claim 1, wherein: A clamping groove (11) corresponding to two positions of a switch is arranged on the lower side of the lock, and the clamping grooves of the two positions are respectively slidably connected with protrusions (12) arranged on the top cover to limit two actions of the switch of the lock when the lock is pushed and pulled.

5. The dual stage filter for a water inlet valve of claim 3, wherein: A protrusion (13) is arranged on the front end of the lock seat, the filter is positioned and assembled by aligning the protrusion with a positioning slot (14) arranged on the top cover.

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