CN218529983U

CN218529983U - Front filter

Info

Publication number: CN218529983U
Application number: CN202222067853.XU
Authority: CN
Inventors: 杨盛章
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-02-28
Anticipated expiration: 2032-08-08

Abstract

The utility model provides a pre-filter, which comprises a shell and a filter screen component arranged in the shell; the shell consists of a top cover and a bottom cover, and both ends of the shell are respectively provided with a water outlet and a water inlet; the filter screen component comprises a filter screen framework and a filter screen; the bottom end of the filter screen framework is closed and is provided with a positioning head, and the side wall of the filter screen framework is provided with a plurality of water through holes; the filter screen is sleeved on the filter screen framework; in particular: the bottom in the bottom cover is provided with a plurality of convex ribs which are uniformly arranged around the edge of the water inlet, each convex rib is provided with an inner rib section and an outer rib section which are sequentially increased, the inner rib section is arranged close to the water inlet of the bottom cover, the top surface of the inner rib section forms an inner supporting surface, and the top surface of the outer rib section forms an outer supporting surface; the positioning head of the filter screen framework is arranged on the inner supporting surface, the bottom of the filter screen component is positioned on the outer side of the positioning head and arranged on the outer supporting surface, and a water passing gap is formed between the bottom of the filter screen component and the adjacent 2 convex ribs. The utility model has the characteristics of simple structure, overall arrangement are compact, the dismouting of being convenient for very much and easily wash the change.

Description

Front filter

Technical Field

The utility model relates to a filter technical field, concretely relates to leading filter.

Background

The pre-filter is disclosed in the Chinese patent with the application number of 201921508575.9, and comprises a top cover, a framework, a filter screen and a bottom cover, wherein the pre-filter can be connected in series with a water inlet pipe of water using equipment such as an electric water heater or a water outlet end of a faucet, and a water body which is about to flow into the water using equipment or a water body which is output through the faucet is filtered through the filter screen. As disclosed in the above paragraphs [0014] to [0017] of the patent specification, after the gasket fixes the skeleton and combines with the filter screen, the top cover is inserted and connected with the bottom cover, so that the water gap between the left end of the skeleton and the bottom cover and used for communicating the water inlet is formed by inserting the right end of the skeleton and the top cover, and the inserted connection mode has a very simple structure and has the advantage of low manufacturing cost, but the disadvantages of: the plug-in connection involves a risk of detachment, which is easily detached during transport and replacement of the installation site. Once separated, even if the water flow input through the water inlet presses the left end of the framework, the right end of the framework is inserted into the top cover again, and a water passing gap is reserved between the left end of the framework and the bottom cover again. However, once the water pressure is insufficient, the separated framework cannot be reset and inserted into the top cover, so that the top cover and the bottom cover still need to be opened, and the position of the framework needs to be repaired, so that the obvious structure is unreasonable. Therefore, the existing prefilter has the defect of unreasonable structure, and needs to be improved.

Disclosure of Invention

The utility model aims at providing a leading filter, it has simple structure, the compact characteristics of overall arrangement, and the dismouting of being convenient for very much and easily wash the change can be installed on the inlet tube of water equipment such as electric water heater or on tap water outlet, effectively guarantee water equipment or tap's working life and improve user's water safety nature.

The utility model discloses a following technical scheme of purpose accessible realizes:

a pre-filter comprises a shell and a filter screen component arranged in the shell; the shell is a columnar shell structure formed by vertically butting a top cover and a bottom cover, the top end of the top cover is provided with a water outlet and a water outlet joint, and the bottom end of the bottom cover is provided with a water inlet and a water inlet joint; the filter screen component comprises a filter screen framework and a filter screen; the filter screen framework is a columnar shell structure with an opening at the top end, a closed bottom end and a positioning head, and a plurality of water through holes are formed in the side wall of the filter screen framework; the filter screen is of a cylindrical screen-shaped structure with openings at two ends, the filter screen is sleeved on the outer surface of the side wall of the filter screen framework to shield the water through holes, the filter screen assembly is arranged in the filter shell and has a water flow gap with the inner wall of the filter shell, the top opening end of the filter screen framework is arranged corresponding to the water outlet of the top cover, and the closed end of the filter screen framework is arranged corresponding to the water inlet of the bottom cover; the method is characterized in that: the bottom in the bottom cover is provided with a plurality of convex ribs which are uniformly arranged around the edge of the water inlet, each convex rib is provided with an inner rib section and an outer rib section which are sequentially increased, the inner rib section is arranged close to the water inlet of the bottom cover, the top surfaces of the inner rib sections of the plurality of convex ribs form an inner supporting surface which is annularly arranged, and the top surfaces of the outer rib sections of the plurality of convex ribs form an outer supporting surface which is annularly arranged; the filter screen component is arranged on the inner supporting surface by the positioning head of the filter screen framework, the bottom of the filter screen component is arranged on the outer supporting surface at the outer side of the positioning head, and a water passing gap is formed between the bottom of the filter screen component and the adjacent 2 convex ribs.

In an optimized scheme, the filter screen assembly further comprises a base plate, the base plate is of an annular sheet structure sleeved on the positioning head of the filter screen framework, an annular groove is formed in the outer edge of the top surface of the base plate, and the bottom end of the filter screen is correspondingly inserted into the annular groove of the base plate.

Furthermore, the top of the tail end of the outer rib section on the convex rib is also provided with a convex part, and the outer edge part of the base plate of the filter screen component is arranged close to the convex part of the convex rib.

The optimized scheme is that an annular baffle part is arranged on the outer wall of the top end of the filter screen framework of the filter screen assembly, an annular convex wall part is arranged on the inner wall of the top end of the top cover of the shell, and the top end of the filter screen framework is inserted into the annular convex wall part of the top cover and abuts against the bottom of the annular convex wall part.

Further, the top and the below that lie in annular fender portion on the top outer wall of the filter screen skeleton of filter screen subassembly have draw-in groove and annular lower slot in the annular respectively, are equipped with the sealing washer in the draw-in groove on the annular, go up the annular flange portion of the outward flange butt top cap of sealing washer, are equipped with the lower seal circle in the draw-in groove under the annular, the top of filter screen extend to the annular fender portion of filter screen skeleton and with the outward flange butt of lower seal circle.

According to the optimized scheme, a cylindrical plug connector is arranged at the bottom end of a top cover in the shell, an arc-shaped butt joint groove which is coaxially arranged is formed in the outer wall of the plug connector, and one end of the arc-shaped butt joint groove extends obliquely to the bottom end of the plug connector to form a butt joint notch; the inner wall of the top end of the bottom cover is provided with an arc-shaped clamping head, the top end of the bottom cover is sleeved on the inserting joint of the top cover, and the arc-shaped clamping head of the top cover or the bottom cover and the bottom cover can be screwed to be inserted into the arc-shaped abutting groove from the abutting groove opening of the top cover so as to abut the top cover and the bottom cover. Furthermore, a plurality of handheld concave positions are arranged on the outer wall of the top end of the top cover.

The utility model has the following substantive characteristics and progress:

1. the utility model can stably position and support the bottom of the filter screen assembly through the convex ribs arranged at the bottom in the bottom cover, and can form a water passing gap for communicating the water inlet of the shell with the water flow gap in the shell; has the characteristics of reasonable structure, easy manufacture and firm structure.

2. The utility model further realizes the positioning connection and the sealing between the bottom end of the filter screen and the bottom end of the filter screen framework through the base plate;

3. the utility model further realizes the positioning and splicing of the top of the filter screen component through the mutual matching of the annular baffle part at the top end of the filter screen framework and the annular convex wall part of the top cover; and still further effectively block the delivery port and the rivers clearance direct intercommunication of top cap through the upper seal circle, ensure that rivers get into the water inlet of leading filter after, flow through water clearance and the rivers clearance in the leading filter in proper order, filter the back through many filter screens, get into the delivery port of leading filter through the water hole of crossing of filter screen skeleton again.

4. The utility model discloses well top cap and the easy dismouting of bottom and filter screen subassembly also easily dismouting have simple structure, the compact characteristics of overall arrangement, the dismouting of being convenient for very much and wash the change in the shell, and then effectively ensure the filter effect.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the bottom cover of the present invention.

Fig. 4 is a schematic view of an assembly state of the present invention.

Fig. 5 is a schematic view of an assembled state of the filter screen assembly according to the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Examples

Referring to fig. 1 to 5, a prefilter includes a housing 10 and a filter screen assembly 30 disposed in the housing 10.

Referring to fig. 4 in particular, the housing 10 is a cylindrical shell structure formed by a top cover 1 and a bottom cover 2 which are butted up and down. The top end of the top cover 1 is provided with a water outlet 11 and a water outlet joint 12, the bottom end of the top cover 1 is provided with a cylindrical plug 15, the outer wall of the plug 15 is provided with a coaxially arranged circular arc-shaped butt joint groove 16, and one end of the circular arc-shaped butt joint groove 16 obliquely extends to the bottom end of the plug 15 to form a butt joint notch 17; the top end outer wall of the top cover 1 is provided with a plurality of handheld concave positions 19. The bottom end of the bottom cover 2 is provided with a water inlet 21 which is provided with a water inlet joint 22, the inner wall of the top end of the bottom cover 2 is provided with an arc-shaped clamping head 26, the bottom cover 2 is sleeved on the plug-in joint 15 of the top cover 1 from the top end thereof, and the arc-shaped clamping head 26 of the top cover 1 or the bottom cover 2 and the bottom cover 2 can be screwed to be inserted into the arc-shaped butt joint groove 16 from the butt joint notch 17 of the top cover 1 so as to butt joint the top cover 1 and the bottom cover 2.

Referring specifically to fig. 5, the filter screen assembly 30 includes a filter screen frame 3, a filter screen 4 and a base plate 5. The filter screen framework 3 is a cylindrical shell structure with a top opening 31 at the top end, a closed bottom end and a positioning head 32, and a plurality of water through holes 33 are formed in the side wall of the filter screen framework 3. The filter screen 4 becomes the cylindric screen cloth column structure that both ends have the opening, and it overlaps and will cross water hole 33 and shelter from on the surface of 3 lateral walls of filter screen skeleton, has a plurality of hole diameters on the filter screen 4 and be about 1 millimeter filter the hole, can make the water flow through and strain the tiny particle impurity can.

The filter screen assembly 30 is arranged in the filter housing 10, and a water flow gap 20 is formed between the filter screen assembly and the inner wall of the filter housing 10, the top opening 31 end of the filter screen framework 3 is arranged corresponding to the water outlet 11 of the top cover 1, and the closed end of the filter screen framework 3 is arranged corresponding to the water inlet 21 of the bottom cover 2. The base plate 5 is an annular sheet structure sleeved on the positioning head 32 of the filter screen framework 3, an annular groove 51 is arranged on the outer edge of the top surface of the base plate, and the bottom end of the filter screen 4 is correspondingly inserted into the annular groove 51 of the base plate 5.

In the housing 10 of this embodiment, the bottom in the bottom cover 2 has a plurality of ribs 23 that evenly set up around the edge of the water inlet 21, and the rib 23 has interior muscle section 231 and outer muscle section 232 that increase in proper order, and interior muscle section 231 is close to the water inlet 21 setting of bottom cover 2, and the top surface of the interior muscle section 231 of a plurality of ribs 23 constitutes the interior supporting surface 233 that the annular was arranged, and the top surface of the outer muscle section 232 of a plurality of ribs 23 constitutes the outer supporting surface 234 that the annular was arranged. The top of the end of the outer rib section 232 on the rib 23 is also provided with a convex part 235.

The filter screen assembly 30 is arranged on the inner supporting surface 233 through the positioning head 32 of the filter screen framework 3, the bottom of the filter screen assembly 30 is arranged on the outer supporting surface 234 at the outer side of the positioning head 32, and the outer edge of the base plate 5 is arranged close to the convex portion 235 of the convex rib 23. A water gap 230 is formed between the bottom of the filter screen assembly 30 and the adjacent 2 ribs 23. The bottom support of the filter screen assembly 30 by the plurality of ribs 23 ensures the connectivity of the water flow gap 230, so that the water inlet 21 of the housing 10 is efficiently communicated with the water flow gap 20 through the water flow gap 230.

In this embodiment, the top end outer wall of the filter screen framework 3 is provided with an annular blocking portion 34, the top end inner wall of the top cover 1 of the housing 10 is provided with an annular convex wall portion 14, the top end of the filter screen framework 3 is inserted into the annular convex wall portion 14 of the top cover 1, and the annular blocking portion 34 abuts against the bottom of the annular convex wall portion 14. The positioning and placement of the top end of the screen frame 3 is achieved by the cooperation of the annular baffle portion 34 and the annular flange portion 14.

In addition, the top and the below that lie in annular fender portion 34 on the top outer wall of filter screen skeleton 3 of filter screen subassembly 30 have annular draw-in groove 35 and annular draw-in groove 36 down respectively, are equipped with sealing washer 351 in the annular draw-in groove 35, go up sealing washer 351's outward flange butt top cap 1's annular convex wall portion 14, are equipped with lower sealing washer 361 in the annular draw-in groove 36 down, and the top of filter screen 4 extends to filter screen skeleton 3's annular fender portion 34 and with the outward flange butt of lower sealing washer 361. The upper sealing ring 351 effectively blocks the direct communication between the water outlet 11 of the top cover 1 and the water flow gap 20, and the lower sealing ring 361 plays a role in sealing the gap between the top end of the filter screen 4 and the filter screen framework 3; in addition, the bottom end of the filter screen 4 is inserted into the annular groove 51 of the base plate 5 to realize the function of sealing the gap between the bottom end of the filter screen 4 and the filter screen framework 3.

When the pre-filter of the embodiment is used in cooperation with an electric water heater, the pre-filter is installed on a water inlet pipe (not shown) of the electric water heater, water to enter the electric water heater flows through a water inlet 21 of the pre-filter, sequentially flows through a water flowing gap 230 and a water flowing gap 20 in the pre-filter, is filtered by a plurality of filter screens 4, then enters a water outlet 11 of the pre-filter through a water passing hole 33 of a filter screen framework 3, and finally enters the water inlet pipe of the electric water heater to be input into the electric water heater, so that the pre-filter of the water to enter the electric water heater is realized, and the effects of purifying water bodies, protecting the service life of the electric water heater and heating effects are achieved.

After a period of use, the prefilter of this embodiment may be removed, and the top cover 1 or the bottom cover 2 may apply force to unscrew the housing 10, and remove the filter screen assembly 30 for cleaning. When necessary, the base plate 5 on the filter screen component can be detached, the filter screen framework 3 is separated from the filter screen 4, and related components such as a new filter screen 4 are replaced, so that the filter screen component has the characteristics of simple structure and convenience in disassembly and assembly.

Claims

1. A pre-filter comprises a housing (10) and a filter screen assembly (30) arranged in the housing (10); the shell (10) is of a cylindrical shell structure formed by vertically butting a top cover (1) and a bottom cover (2), the top end of the top cover (1) is provided with a water outlet (11) and a water outlet joint (12), and the bottom end of the bottom cover (2) is provided with a water inlet (21) and a water inlet joint (22); the filter screen component (30) comprises a filter screen framework (3) and a filter screen (4); the filter screen framework (3) is a columnar shell structure with a top opening (31) at the top end, a closed bottom end and a positioning head (32), and a plurality of water through holes (33) are formed in the side wall of the filter screen framework (3); the filter screen (4) is of a cylindrical screen-shaped structure with openings at two ends, the filter screen is sleeved on the outer surface of the side wall of the filter screen framework (3) to shield the water passing holes (33), the filter screen assembly (30) is arranged in the filter shell (10) and has a water flow gap (20) with the inner wall of the filter shell (10), the top opening (31) end of the filter screen framework (3) is arranged corresponding to the water outlet (11) of the top cover (1), and the closed end of the filter screen framework (3) is arranged corresponding to the water inlet (21) of the bottom cover (2); the method is characterized in that: the bottom in the bottom cover (2) is provided with a plurality of convex ribs (23) which are uniformly arranged around the edge of the water inlet (21), the convex ribs (23) are provided with an inner rib section (231) and an outer rib section (232) which are sequentially increased, the inner rib section (231) is arranged close to the water inlet (21) of the bottom cover (2), the top surfaces of the inner rib sections (231) of the plurality of convex ribs (23) form an inner supporting surface (233) which is annularly arranged, and the top surfaces of the outer rib sections (232) of the plurality of convex ribs (23) form an outer supporting surface (234) which is annularly arranged; the filter screen assembly (30) is arranged on the inner supporting surface (233) through the positioning head (32) of the filter screen framework (3), the bottom of the filter screen assembly (30) is positioned on the outer side of the positioning head (32) and is arranged on the outer supporting surface (234), and a water passing gap (230) is formed between the bottom of the filter screen assembly (30) and the adjacent 2 convex ribs (23).

2. A pre-filter according to claim 1, wherein: the filter screen assembly (30) further comprises a base plate (5), the base plate (5) is an annular sheet structure sleeved on the positioning head (32) of the filter screen framework (3), an annular groove (51) is formed in the outer edge of the top surface of the base plate, and the bottom end of the filter screen (4) is correspondingly inserted into the annular groove (51) of the base plate (5).

3. A pre-filter according to claim 2, wherein: the top of the tail end of the outer rib section (232) on the convex rib (23) is also provided with a convex part (235), and the outer edge part of the base plate (5) of the filter screen assembly (30) is arranged close to the convex part (235) of the convex rib (23).

4. A pre-filter according to claim 1, wherein: have annular fender portion (34) on the top outer wall of filter screen skeleton (3) of filter screen subassembly (30), the top inner wall of top cap (1) of shell (10) has annular bulge portion (14), and the top of filter screen skeleton (3) is inserted in annular bulge portion (14) of top cap (1), its annular fender portion (34) support in the bottom of annular bulge portion (14).

5. A pre-filter according to claim 4, characterised in that: the top and the below that lie in annular fender portion (34) on the top outer wall of filter screen skeleton (3) of filter screen subassembly (30) have draw-in groove (35) and annular lower clamping groove (36) on the annular respectively, be equipped with in draw-in groove (35) and go up sealing washer (351) on the annular, go up annular flange portion (14) of the outward flange butt top cap (1) of sealing washer (351), be equipped with lower seal circle (361) in draw-in groove (36) under the annular, the top of filter screen (4) extends to annular fender portion (34) of filter screen skeleton (3), and with the outward flange butt of lower seal circle (361).

6. A pre-filter according to any one of claims 1 to 5, characterised in that: in the shell (10), a cylindrical plug connector (15) is arranged at the bottom end of the top cover (1), a circular arc-shaped butt joint groove (16) which is coaxially arranged is formed in the outer wall of the plug connector (15), and one end of the circular arc-shaped butt joint groove (16) obliquely extends to the bottom end of the plug connector (15) to form a butt joint notch (17); an arc-shaped clamping head (26) is arranged on the inner wall of the top end of the bottom cover (2), the bottom cover (2) is sleeved on the plug-in connector (15) of the top cover (1) from the top end of the bottom cover, and the arc-shaped clamping head (26) of the top cover (1) or the bottom cover (2) and the bottom cover (2) can be screwed to be inserted into the arc-shaped butt joint groove (16) from the butt joint notch (17) of the top cover (1) so that the top cover (1) and the bottom cover (2) are in butt joint.

7. A pre-filter according to claim 6, characterised in that: the outer wall of the top end of the top cover (1) is provided with a plurality of handheld concave positions (19).