CN220834479U - Front filter with convenient core replacement - Google Patents
Front filter with convenient core replacement Download PDFInfo
- Publication number
- CN220834479U CN220834479U CN202322214931.9U CN202322214931U CN220834479U CN 220834479 U CN220834479 U CN 220834479U CN 202322214931 U CN202322214931 U CN 202322214931U CN 220834479 U CN220834479 U CN 220834479U
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- China
- Prior art keywords
- water outlet
- connecting section
- filter
- outlet connecting
- core
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000011045 prefiltration Methods 0.000 claims abstract description 23
- 239000008213 purified water Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a pre-filter with convenient core replacement, which comprises a valve head, a filter flask and a filter element assembly, wherein a core replacement port is arranged on the valve head; the filter element assembly further comprises a water outlet connecting section and a handheld part, the water outlet connecting section is arranged in the core replacing port, two ends of the water outlet connecting section are respectively fixed on the water purifying outlet and the handheld part, a first sealing structure for preventing water flow from overflowing is arranged on the handheld part, a second sealing structure for preventing raw water from entering the water outlet connecting section is arranged at the joint of the water outlet connecting section and the filter element part, and the outer diameter of the water outlet connecting section is smaller than the inner diameter of the core replacing port corresponding to the water outlet connecting section. The outer diameter of the water outlet connecting section is smaller than the inner diameter of the corresponding core exchange port, so that an annular gap exists between the water outlet connecting section and the inner wall of the corresponding core exchange port, and water flow in the gap is always communicated with the water outlet of the pre-filter, so that the filter element assembly does not need to be positioned during installation, and the stability of flow is ensured.
Description
Technical Field
The utility model relates to the field of water purifying equipment, in particular to a pre-filter with a convenient core replacement.
Background
As shown in fig. 1, the applicant discloses in patent 2021221947971 a water purifying device for replacing a filter element, which comprises a valve head 1', a filter flask 2' and a filter element assembly, wherein the filter flask 2' is fixedly installed at the lower end of the valve head 1', a water inlet 11' and a water outlet 12' are respectively arranged at the left end and the right end of the valve head 1', a core replacing port (not shown in the figure) is arranged at the upper end of the valve head 1, the filter element assembly is detachably and hermetically installed at the core replacing port, and the filter element assembly comprises a hand-held part 3' capable of being installed at the core replacing port and a filter element 4' capable of entering the valve head 1' and the filter flask 2' from the core replacing port. After installation, the water outlet end 30 'of the hand-held part 3' is aligned with the water outlet 12 'of the valve head 1'. However, since the hand-held portion 3' is screwed (rotated) to the core-changing port, a problem of a positional deviation is likely to occur and the water outlet end 30' of the hand-held portion 3' is deviated from the water outlet 12' of the valve head 1', resulting in a reduction in flow rate and thus a negative influence on the filtering effect.
Disclosure of utility model
The utility model provides a prefilter with a convenient core replacement, which aims to solve the problems that a filter element assembly in the prior art needs to be positioned when being inserted, and the water outlet end of the prefilter is easily deviated from the water outlet of the prefilter and the flow is reduced.
In order to achieve the purpose, the technical scheme provided by the utility model is as follows:
The prepositive filter with convenient core replacement comprises a valve head and a filter flask which are mutually fixed, wherein a core replacement opening is arranged on the valve head, and the side surface of the core replacement opening is communicated with a water outlet of the prepositive filter; the pre-filter further comprises a filter element assembly which is removably and hermetically arranged at the core exchange port, the filter element assembly comprises a cylindrical filter element part, one end of the filter element part forms a purified water outlet, and the filter element part is positioned in the filter flask; the filter element assembly further comprises a water outlet connecting section communicated with the water outlet of the pre-filter and a handheld part of which part is exposed to the core replacing port, the water outlet connecting section is installed in the core replacing port, one end of the water outlet connecting section is fixed to a purified water outlet, the other end of the water outlet connecting section is fixedly connected to the handheld part, the filter core part, the water outlet connecting section and the handheld part are concentrically arranged, a first sealing structure for preventing water flow from overflowing is arranged on the handheld part, a second sealing structure for preventing raw water from entering the water outlet connecting section is arranged at the junction of the water outlet connecting section and the filter core part, and the outer diameter of the water outlet connecting section is smaller than the inner diameter of the core replacing port corresponding to the water outlet connecting section. Namely, a gap is arranged between the water outlet connecting section and the inner wall of the core changing port corresponding to the water outlet connecting section.
In a recommended embodiment, the first sealing structure comprises a first annular sealing groove and a first sealing ring arranged in the first annular sealing groove, and the outer diameter of the water outlet connecting section is smaller than the outer diameter of the first annular sealing groove.
In a recommended embodiment, the second sealing structure comprises a second annular sealing groove and a second sealing ring installed in the second annular sealing groove, and the outer diameter of the first annular sealing groove is larger than or equal to the outer diameter of the second annular sealing groove.
In a preferred embodiment, the outer diameter of the outlet connection section is smaller than the outer diameter of the second annular seal groove.
In a preferred embodiment, the handpiece has a threaded connection section.
In a recommended embodiment, the water outlet connection section comprises at least one longitudinal main rod, one end of the main rod is fixedly connected to the filter element part, and the other end of the main rod is fixedly connected to the handheld part.
In a recommended embodiment, the water outlet connection section comprises at least two longitudinal main rods which are spaced from each other, one end of each main rod is fixedly connected to the filter element part, and the other end is fixedly connected to the handheld part.
In a preferred embodiment, the water outlet connection section further comprises transverse rings surrounding each main rod at a distance from each other.
In a recommended embodiment, the handheld part exposed out of the core changing port is provided with a water hammer preventing device.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: the outer diameter of the water outlet connecting section is smaller than the inner diameter of the corresponding core exchange port, so that an annular gap exists between the water outlet connecting section and the inner wall of the corresponding core exchange port, and water flow in the gap is always communicated with the water outlet of the pre-filter, so that the filter element assembly does not need to be positioned during installation, and the stability of flow is ensured.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a schematic cross-sectional structure of the present utility model.
Fig. 3 is a schematic cross-sectional structure of the valve head.
Fig. 4 is a schematic structural view of a cartridge assembly.
Fig. 5 is a schematic cross-sectional view of a cartridge assembly.
Fig. 6 is a schematic cross-sectional view of a filter element assembly according to a second embodiment.
Description of the embodiments
The utility model will be further understood by reference to the following examples which are given to illustrate the utility model but are not intended to limit the scope of the utility model.
Referring to fig. 2 and 3, a pre-filter with convenient core replacement comprises a valve head 1 and a filter flask 2 which are mutually fixed, wherein a water inlet 11 and a water outlet 12 are respectively formed in the left side and the right side of the valve head 1, a filter flask connection port 13 is formed in the lower end of the valve head 1, the upper end of the filter flask 2 is fixedly arranged on the filter flask connection port 13, in addition, a tubular core replacement port 10 is formed in the upper end of the valve head 1, and an opening 100 communicated with the water outlet 12 of the valve head 1 is formed in the side surface of the core replacement port 10.
Referring to fig. 2, 4 and 5, the pre-filter further comprises a filter element assembly 3 which is removably and sealingly mounted at the core changing port 10, the filter element assembly 3 comprises a cylindrical filter element portion 31, the filter element portion 31 comprises a framework and a filter screen, the filter screen is sleeved on the framework, one end of the filter element portion 31 forms a purified water outlet 310 (indicated by a dotted line in fig. 5), and the filter element 3 is positioned in the filter flask 2.
The filter element assembly 3 further comprises a water outlet connecting section 32 communicated with the water outlet 12 (opening of the core changing port) of the valve head 1 and a handheld portion 33 partially exposed out of the core changing port 10, the water outlet connecting section 32 is installed in the core changing port 10, one end of the water outlet connecting section 32 is fixed to a purified water outlet 310, the other end of the water outlet connecting section 32 is fixedly connected to the handheld portion 33, and the filter element portion 31, the water outlet connecting section 32 and the handheld portion 33 are concentrically arranged.
In this embodiment, the upper portion of the hand-held portion 33 is provided with a threaded connection section for fixedly connecting with the core-exchanging port 10, the lower end of the hand-held portion 33 is provided with a first sealing structure 4 for preventing water flow from overflowing, and the first sealing structure 4 includes a first annular sealing groove 41 and a first sealing ring 42 installed in the first annular sealing groove 41.
In this embodiment, the water outlet connection section 32 includes a plurality of spaced longitudinal main rods and transverse rings surrounding the main rods at intervals, one end of each main rod is fixedly connected to the filter element portion 31, and the other end is fixedly connected to the hand-held portion 33. A plurality of water outlet holes are formed between the mutually staggered main rods and the transverse rings and are used for communicating with a water outlet 12 of the valve head 1 (pre-filter).
In this embodiment, a second sealing structure 5 for preventing raw water from entering the water outlet connection section 32 is disposed at the junction of the water outlet connection section 32 and the filter element portion 31. The second sealing structure 5 includes a second annular sealing groove 51 and a second sealing ring 52 installed in the second annular sealing groove 51, and as can be seen from the figure, the outer diameter of the first annular sealing groove 41 is equal to the outer diameter of the second annular sealing groove 51, and is larger than the outer diameter of the water outlet connection section 32.
After the installation is completed, the outer diameter of the water outlet connecting section 32 is smaller than the inner diameter of the core replacing port 10 corresponding to the water outlet connecting section, namely, an annular gap is formed between the water outlet connecting section 32 and the inner wall of the core replacing port 10 corresponding to the water outlet connecting section 32, and the water outlet connecting section 32 corresponds to the water outlet 12, so that water flow in the gap is always communicated with the water outlet 12 of the pre-filter, the filter element assembly 3 does not need to be positioned during the installation, and the stability of flow can be ensured.
Examples
Referring to fig. 6, the second embodiment has substantially the same structure as the above embodiment, and is mainly different in that a waterproof hammer device 6 is further externally connected to the hand-holding portion 33 of the present embodiment, and the waterproof hammer device 6 is mounted on the upper end of the hand-holding portion 33 exposed from the core-exchanging port.
The present utility model has been described in detail with reference to the embodiments, but the description is only the preferred embodiments of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model should be considered as falling within the scope of the present utility model.
Claims (9)
1. The prepositive filter with convenient core replacement comprises a valve head and a filter flask which are mutually fixed, wherein a core replacement opening is arranged on the valve head, and the side surface of the core replacement opening is communicated with a water outlet of the prepositive filter; the pre-filter further comprises a filter element assembly which is removably and hermetically arranged at the core exchange port, the filter element assembly comprises a cylindrical filter element part, one end of the filter element part forms a purified water outlet, and the filter element part is positioned in the filter flask; the filter element assembly further comprises a water outlet connecting section communicated with the water outlet of the pre-filter and a handheld part partially exposed out of the core exchange opening, the water outlet connecting section is installed in the core exchange opening, one end of the water outlet connecting section is fixed to a purified water outlet, the other end of the water outlet connecting section is fixedly connected to the handheld part, the filter core part, the water outlet connecting section and the handheld part are concentrically arranged, a first sealing structure for preventing water flow from overflowing is arranged on the handheld part, and a second sealing structure for preventing raw water from entering the water outlet connecting section is arranged at the junction of the water outlet connecting section and the filter core part, and the filter element assembly is characterized in that: the outer diameter of the water outlet connecting section is smaller than the inner diameter of the core replacing port corresponding to the water outlet connecting section.
2. A pre-filter according to claim 1, wherein: the first sealing structure comprises a first annular sealing groove and a first sealing ring arranged in the first annular sealing groove, and the outer diameter of the water outlet connecting section is smaller than that of the first annular sealing groove.
3. A pre-filter according to claim 2, wherein: the second sealing structure comprises a second annular sealing groove and a second sealing ring arranged in the second annular sealing groove, and the outer diameter of the first annular sealing groove is larger than or equal to the outer diameter of the second annular sealing groove.
4. A pre-filter according to claim 3, wherein: the outer diameter of the water outlet connecting section is smaller than that of the second annular sealing groove.
5. A pre-filter according to claim 1, wherein: the hand-held portion has a threaded connection section.
6. A pre-filter according to claim 1, wherein: the water outlet connecting section comprises at least one longitudinal main rod, one end of the main rod is fixedly connected with the filter element part, and the other end of the main rod is fixedly connected with the handheld part.
7. A pre-filter according to claim 1, wherein: the water outlet connecting section comprises at least two longitudinal main rods which are spaced from each other, one end of each main rod is fixedly connected with the filter element part, and the other end of each main rod is fixedly connected with the handheld part.
8. The prefilter of claim 7, wherein: the water outlet connecting section also comprises transverse rings which are mutually and alternately surrounded on the main rods.
9. A pre-filter according to claim 1, wherein: the handheld part exposed out of the core changing port is provided with a water hammer preventing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322214931.9U CN220834479U (en) | 2023-08-17 | 2023-08-17 | Front filter with convenient core replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322214931.9U CN220834479U (en) | 2023-08-17 | 2023-08-17 | Front filter with convenient core replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220834479U true CN220834479U (en) | 2024-04-26 |
Family
ID=90788264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322214931.9U Active CN220834479U (en) | 2023-08-17 | 2023-08-17 | Front filter with convenient core replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220834479U (en) |
-
2023
- 2023-08-17 CN CN202322214931.9U patent/CN220834479U/en active Active
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