CN109432866A - Self-cleaning fore filter - Google Patents
Self-cleaning fore filter Download PDFInfo
- Publication number
- CN109432866A CN109432866A CN201811649760.XA CN201811649760A CN109432866A CN 109432866 A CN109432866 A CN 109432866A CN 201811649760 A CN201811649760 A CN 201811649760A CN 109432866 A CN109432866 A CN 109432866A
- Authority
- CN
- China
- Prior art keywords
- filter core
- attachment base
- shell
- outlet
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 abstract description 12
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
Abstract
The present invention relates to a kind of self-cleaning fore filters, including attachment base, filter core and shell, water inlet flow channel and outlet passage are provided on the attachment base, the shell is screwed in the lower end of attachment base, the input end that filter core is screwed in attachment base bottom outlet passage is isolated by water inlet flow channel and outlet passage, the filter core is Columned filter core, upper bearing (metal) and lower bearing are arranged in Columned filter core upper and lower end, have on brush holder set setting metal (upper, bristle on the inside of brush holder is kept in contact with cartridge surface, axial wheel is also arranged in brush holder upper end, axial wheel is in the water outlet of water inlet flow channel, in the shell lower end, water outlet is set, water outlet setting has the control valve of timing function, the present invention greatly reduces the possibility of accumulation of the impurity in strainer, extend the service life of filter.
Description
Technical field
The present invention relates to a kind of piping filter, specifically a kind of self-cleaning fore filter.
Background technique
Household fore filter major function is to intercept of the essence to cause damages in water to family's water pipe and equipment of paddling
Grain impurity, silt and iron rust etc., existing market filter are mostly non-disposal type fore filter, and water (flow) direction does not change when flushing
Become, i.e., cut dirty one side come filter cartridge flushing with untreated raw water, not only lesser miscellaneous flushing does not come out in this way, exists instead
It is embedding deeper, tighter in filter core, as a result easily become pollution source, except non-user is ready very continually detaching equipment, uses
Banister brush is cleaned, therefore these are not received by the majority of consumers very well always；Applicant has applied for patent before this
Number are as follows: 2011202596514, title are as follows: a kind of Universal front-mounted type pressure-stabilization filter and Patent No.: 2010202539733, name
Referred to as: the filter of a kind of two pieces patent of invention of direct-flushing filter, above-mentioned two pieces patent description is required to from draining cleaning
By carrying out manually, it not can be carried out periodically automatic clear certainly and wash.
Applicant's design is a a kind of automatically from washed filter is cleared thus, if notification number is CN103877776A institute
Show, it is a kind of that automatically from washed filter is cleared, it includes filter body, an interface is equipped on the filter body,
Interface is connected with pipe jointer, filter body described in the inlet and outlet equipped with filter in pipe jointer
Including interconnecting piece, the filter house being connected to below interconnecting piece, and the control unit above interconnecting piece is set；There is a cleaning rod
Interconnecting piece and filter house are passed through from control unit from top to bottom and is stretched out from the discharge outlet of filter house lower end, and cleaning rod lower part corresponded to
The position of filter portion discharge outlet is equipped with sealing ring, corresponds to above sealing ring and is equipped with cleaning circle at filter house self-filtering net position,
The outer rim of cleaning circle is contacted with the inner wall of filter screen；Piston, piston accommodating and control unit are equipped on the top of the cleaning rod
Inside plunger shaft in, between piston and controller roof be equipped with returning spring；It is additionally provided on the controller automatically controlled
Valve, the inlet opening of electrically-controlled valve are connected to the inlet channel of interconnecting piece or water outlet, the apopore of electrically-controlled valve and the plunger shaft of control unit
Connection is additionally provided with drainage, the bottom of the outlet setting cleaning rod of drainage, the import of drainage inside the cleaning rod
It is arranged on the side wall below piston, the bore of drainage is less than the bore of electrically-controlled valve inlet opening and apopore, and described is automatically controlled
Valve is also connect with timer；But in the actual process, this cleaning can only be periodically automatic clear to carrying out on the inside of filter screen
It washes, it can not be to being cleaned on the outside of filter screen, and the impurity of raw water mainly accumulates in the outside of strainer, therefore this structure
It cannot fundamentally solve the problems, such as that present filter exists.
Summary of the invention
The purpose of the present invention is to provide a kind of self-cleaning fore filter, can simultaneously to the interior outside of strainer screen into
Row cleaning, and realize and periodically sewage is discharged, greatly reduce the possibility of accumulation of the impurity in strainer, extend filter uses the longevity
Life.
Following technical scheme is used to achieve the above object:
A kind of self-cleaning fore filter, including attachment base, filter core and shell, be provided on the attachment base water inlet flow channel and
Outlet passage, the shell are screwed in the lower end of attachment base, and the input end that filter core is screwed in attachment base bottom outlet passage will
Water inlet flow channel and outlet passage isolation, it is characterised in that: the filter core is Columned filter core, in Columned filter core upper end and
Lower end is arranged with upper bearing (metal) and lower bearing, has on brush holder set setting metal (upper, bristle and cartridge surface on the inside of brush holder
It is kept in contact, is also arranged with axial wheel in brush holder upper end, axial wheel is in the water outlet of water inlet flow channel, in the shell
Water outlet is arranged in body lower end, and water outlet setting has the control valve of timing function.
The water inlet flow channel is helical structure.
To the blade face water outlet of axial wheel under the water outlet of the water inlet flow channel is vertical.
Control device is additionally provided on the attachment base, control device includes opening up the cavity set on attachment base, chamber
Body bottom is installed with axis hole, and axis hole is communicated through attachment base with outlet passage, the bottom respective shaft of the Columned filter core
Hole site offers through-hole, and piston apparatus is provided in cavity, and cavity is separated into epicoele and cavity of resorption, piston apparatus by piston apparatus
Piston rod be passed down through the through-hole of the axis hole and Columned filter core bottom, the water outlet of piston-rod lower end and shell lower end
Cooperation；The cavity of resorption is connected to by electrically-controlled valve and control runner with the intake tunnel of attachment base；It is offered at the top of institute's attachment base
Adjustment hole, is screwed with adjusting knob at adjustment hole, it is described it is upper it is intracavitary be provided with spring, the upper end of spring is against adjusting knob bottom
Portion, lower spring end are withstood on piston apparatus；The piston rod inner offers shaft orientation flowing channel, and shaft orientation flowing channel lower port leads directly to shell
The water outlet of body lower end, shaft orientation flowing channel upper port are communicated with cavity of resorption, and the internal diameter of shaft orientation flowing channel is less than the internal diameter of control runner；Piston
Sealing structure is provided between bar and axis hole and the through-hole of Columned filter core bottom；It is also equipped between adjusting knob and adjustment hole
Sealing structure.
Toilet seat is also set up in the middle part of the piston rod, toilet seat is placed in inside Columned filter core, on the outside of toilet seat
It is contacted with the inner wall of Columned filter core.
The present invention drives axial wheel by water inlet flow channel water flow, and axial wheel drives brush holder rotation, and brush holder rotation makes
The moment keeps cleaning when obtaining bristle to Columned filter core surface, so that the impurity in water will not be in Columned filter core surface aggregation；
Separately discharged water by the control valve timing with timing function in shell lower end water outlet, thus using the impurity to suspend in shell compared with
It is discharged in time when more, so that it is guaranteed that filter core outer surface will not largely gather scale and impurity, realizes self-cleaning and the function from row.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the invention；
Fig. 2 is the structural schematic diagram of the first embodiment filter core of the invention；
Fig. 3 is the structural schematic diagram of attachment base rotational structure water inlet flow channel of the present invention；
Fig. 4 is the structural schematic diagram of second of embodiment of the invention.
Specific embodiment
As shown in Figure 1-3, a kind of self-cleaning fore filter, including attachment base 1, filter core 2 and shell 3, the connection
It is provided with water inlet flow channel 11 and outlet passage 12 on seat 1, the shell 3 is screwed in the lower end of attachment base 1, and filter core 2 is screwed in
The input end of 1 bottom outlet passage 12 of attachment base is isolated by water inlet flow channel 11 and outlet passage 12, it is characterised in that: the filter
Core 2 is Columned filter core, is arranged with upper bearing (metal) 21 and lower bearing 22 in Columned filter core upper and lower end, there is a brush holder 23
On set setting metal (upper, the bristle 24 of 23 inside of brush holder is kept in contact with 2 surface of filter core, is also arranged with axis in 23 upper end of brush holder
Flow impeller 25, axial wheel 25 is in the water outlet of water inlet flow channel 11, under the water outlet of the water inlet flow channel 11 is vertical to,
The blade face water outlet of axial wheel 25；Dewatering outlet 31 is set in 3 lower end of shell, setting has fixed at dewatering outlet 31
The control valve 4 of Shi Gongneng.
The present invention drives axial wheel by water inlet flow channel water flow, and axial wheel drives brush holder rotation, and brush holder rotation makes
The moment keeps cleaning when obtaining bristle to Columned filter core surface, so that the impurity in water will not be in Columned filter core surface aggregation；
Separately discharged water by the control valve timing with timing function in shell lower end water outlet, thus using the impurity to suspend in shell compared with
It is discharged in time when more, so that it is guaranteed that filter core outer surface will not largely gather scale and impurity, realizes self-cleaning and the function from row.
The present invention can also set helical structure for the water inlet flow channel 11；Water flow enters shell from water inlet flow channel in this way
Vortex flow can be generated when in vivo, axial wheel 25 is more advantageous to and brush holder 23 is driven to rotate.
Another embodiment of the present invention fills the control valve 4 using the control being arranged on the attachment base 1
It sets to control, control device includes opening up the cavity 15 set on attachment base, and 15 bottom of cavity is installed with axis hole, and axis hole is through company
Joint chair 1 is communicated with outlet passage, and the bottom respective shaft hole site of the Columned filter core offers through-hole, setting in cavity 15
There is piston apparatus 16, cavity is separated into epicoele 151 and cavity of resorption 152 by piston apparatus 16, and the piston rod 17 of piston apparatus 16 is downward
Across the through-hole of the axis hole and Columned filter core bottom, the dewatering outlet 31 of 17 lower end of piston rod and 3 lower end of shell cooperates, institute
17 lower end of piston rod stated is provided with tapered portion 26, and tapered portion 26 is also equipped with 31 port of dewatering outlet matches with the tapered portion 26
The tapered portion of conjunction；The cavity of resorption 152 is connected to by electrically-controlled valve 6 and control runner 18 with the intake tunnel 11 of attachment base 1；Company, institute
Adjustment hole is offered at the top of joint chair 1, and adjusting knob 19 is screwed at adjustment hole, is provided with spring 20, bullet in the epicoele 151
The upper end of spring 20 is against 19 bottom of adjusting knob, and 20 lower end of spring is withstood on piston apparatus 16；It is opened inside the piston rod 17
Equipped with shaft orientation flowing channel 28,28 lower port of shaft orientation flowing channel leads directly to the dewatering outlet 31 of 3 lower end of shell, 28 upper port of shaft orientation flowing channel and cavity of resorption
152 communicate, and the internal diameter of shaft orientation flowing channel 28 is less than the internal diameter of control runner 18；Piston rod 17 and axis hole and Columned filter core bottom
Sealing structure is provided between through-hole；Sealing structure is also equipped between adjusting knob 19 and adjustment hole.
Second of embodiment of the invention controls the water inlet of lower chamber 152 by the opening and closing of electrically-controlled valve 6, since control is flowed
The internal diameter in road 18 is greater than the internal diameter of shaft orientation flowing channel 28, is entered from water inlet flow channel 11 by controlling runner 18 when water flow is connected in electrically-controlled valve 6
Drainage speed to cavity of resorption 152, shaft orientation flowing channel 28 is less than water intake velocity, and 152 water increase of cavity of resorption can will push up on piston apparatus 16
Compressed spring, such piston rod 17 can rise together with piston apparatus 16 so that the tapered portion 26 below piston rod 17 with put
The conical section at the mouth of a river 31 is from the water of this shell internal haze is discharged in time；It is living when electrically-controlled valve 6 disconnects control runner 18
Plug device 16 drops under the action of the spring, under intracavitary water be slowly discharged from shaft orientation flowing channel 28, until piston rod 17 will be put again
The mouth of a river 31 recloses, and 6 period of electrically-controlled valve can be arranged according to water quality situation in the present invention, so that it is guaranteed that being unlikely to gather in shell
Big impurity.
The present invention can also also set up toilet seat 27 in the middle part of the piston rod 17, and toilet seat 27 is placed in cylindric filter
Core inner, 27 outside of toilet seat are contacted with the inner wall of Columned filter core, and when piston rod is gone up and down, toilet seat 27 can be to filter core in this way
Inner wall is cleared up, to reach interior outside while clear up, is greatly reduced the possibility of accumulation of the impurity in strainer, is extended filter
Service life.
Claims (6)
1. a kind of self-cleaning fore filter, including attachment base (1), filter core (2) and shell (3), the attachment base are set on (1)
It is equipped with water inlet flow channel (11) and outlet passage (12), the shell (3) is screwed in the lower end of attachment base (1), and filter core (2) is screwed on
Water inlet flow channel (11) and outlet passage (12) are isolated in the input end of attachment base (1) bottom outlet passage (12), feature exists
In: the filter core (2) is Columned filter core, is arranged with upper bearing (metal) (21) and lower axle in Columned filter core upper and lower end
(22) are held, are had on a brush holder (23) set setting metal (upper, the bristle (24) on the inside of brush holder (23) keeps connecing with filter core (2) surface
Touching, is also arranged with axial wheel (25) in brush holder (23) upper end, and axial wheel (25) is in the water outlet of water inlet flow channel (11),
Dewatering outlet (31) are set in shell (3) lower end, setting has the control valve (4) of timing function at dewatering outlet (31).
2. a kind of self-cleaning fore filter as described in claim 1, it is characterised in that: the water inlet flow channel (11) is spiral shell
Revolve structure.
3. a kind of self-cleaning fore filter as described in claim 1, it is characterised in that: the water inlet flow channel (11) goes out
To the blade face water outlet of axial wheel under the mouth of a river is vertical.
4. a kind of self-cleaning fore filter as described in claim 1, it is characterised in that: on the attachment base (1) also
It is provided with control device, control device includes opening up the cavity (15) set on attachment base, and cavity (15) bottom is installed with axis hole,
Axis hole is communicated through attachment base (1) with outlet passage, and the bottom respective shaft hole site of the Columned filter core offers through-hole,
It is provided with piston apparatus (16) in cavity (15), cavity is separated into epicoele (151) and cavity of resorption (152) by piston apparatus (16), living
The piston rod (17) of plug device (16) is passed down through the through-hole of the axis hole and Columned filter core bottom, piston rod (17) lower end
Cooperate with the water outlet (31) of shell (3) lower end；The cavity of resorption (152) is by electrically-controlled valve (6) and control runner (18) and even
The intake tunnel (11) of joint chair (1) is connected to；Adjustment hole is offered at the top of institute's attachment base (1), is screwed with adjusting knob at adjustment hole
(19), it is provided with spring (20) in the epicoele (151), the upper end of spring (20) is against adjusting knob (19) bottom, spring
(20) lower end is withstood on piston apparatus (16)；The piston rod (offers shaft orientation flowing channel (28), shaft orientation flowing channel (28) inside 17
Lower port leads directly to the dewatering outlet (31) of shell (3) lower end, and shaft orientation flowing channel (28) upper port is communicated with cavity of resorption (152), shaft orientation flowing channel
(28) internal diameter is less than the internal diameter of control runner (18)；It is set between piston rod (17) and axis hole and the through-hole of Columned filter core bottom
It is equipped with sealing structure；Sealing structure is also equipped between adjusting knob (19) and adjustment hole.
5. a kind of self-cleaning fore filter as claimed in claim 4, it is characterised in that: in the middle part of the piston rod (17) also
It is arranged toilet seat (27), toilet seat (27) is placed in inside Columned filter core, toilet seat (27) outside and Columned filter core
Inner wall contact.
6. a kind of self-cleaning fore filter as claimed in claim 4, it is characterised in that: described piston rod (17) lower end is set
It is equipped with tapered portion (26), tapered portion (26) and dewatering outlet (31) port are also equipped with the taper with the tapered portion (26) cooperation
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649760.XA CN109432866A (en) | 2018-12-31 | 2018-12-31 | Self-cleaning fore filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649760.XA CN109432866A (en) | 2018-12-31 | 2018-12-31 | Self-cleaning fore filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109432866A true CN109432866A (en) | 2019-03-08 |
Family
ID=65542368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811649760.XA Pending CN109432866A (en) | 2018-12-31 | 2018-12-31 | Self-cleaning fore filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109432866A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393965A (en) * | 2019-07-03 | 2019-11-01 | 曹开军 | Fore filter with strainer self-cleaning function |
| CN113694599A (en) * | 2021-01-19 | 2021-11-26 | 深圳市诚德来实业有限公司 | Novel automatic washing pre-filter |
| CN116983783A (en) * | 2023-09-26 | 2023-11-03 | 新乡市华航航空液压设备有限公司 | High-efficient high-pressure air filter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0212755D0 (en) * | 2001-06-04 | 2002-07-10 | Benenson James Jr | Self-cleaning water filter |
| CN101245786A (en) * | 2008-03-27 | 2008-08-20 | 苏宏亮 | Hydrodynamic force fan of cooling tower |
| US20120292238A1 (en) * | 2012-08-02 | 2012-11-22 | Instapure Brands, Inc. | Pressurized water filtration system |
| CN103877776A (en) * | 2012-12-20 | 2014-06-25 | 台州柯诗达净水设备有限公司 | Full-automatic self-discharging cleaning filter |
| CN205190946U (en) * | 2015-10-30 | 2016-04-27 | 重庆天狼塑胶管业有限公司 | Scale prevention faucet structure |
| CN206409696U (en) * | 2017-01-13 | 2017-08-15 | 柯诗达智能科技（台州）有限公司 | A kind of built-in pressure maintaining valve |
| CN207324223U (en) * | 2017-09-08 | 2018-05-08 | 浙江伊瑞尔净水设备有限公司 | A kind of fore filter |
| CN209475748U (en) * | 2018-12-31 | 2019-10-11 | 台州柯诗达净水设备有限公司 | Self-cleaning fore filter |
-
2018
- 2018-12-31 CN CN201811649760.XA patent/CN109432866A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0212755D0 (en) * | 2001-06-04 | 2002-07-10 | Benenson James Jr | Self-cleaning water filter |
| CN101245786A (en) * | 2008-03-27 | 2008-08-20 | 苏宏亮 | Hydrodynamic force fan of cooling tower |
| US20120292238A1 (en) * | 2012-08-02 | 2012-11-22 | Instapure Brands, Inc. | Pressurized water filtration system |
| CN103877776A (en) * | 2012-12-20 | 2014-06-25 | 台州柯诗达净水设备有限公司 | Full-automatic self-discharging cleaning filter |
| CN205190946U (en) * | 2015-10-30 | 2016-04-27 | 重庆天狼塑胶管业有限公司 | Scale prevention faucet structure |
| CN206409696U (en) * | 2017-01-13 | 2017-08-15 | 柯诗达智能科技（台州）有限公司 | A kind of built-in pressure maintaining valve |
| CN207324223U (en) * | 2017-09-08 | 2018-05-08 | 浙江伊瑞尔净水设备有限公司 | A kind of fore filter |
| CN209475748U (en) * | 2018-12-31 | 2019-10-11 | 台州柯诗达净水设备有限公司 | Self-cleaning fore filter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393965A (en) * | 2019-07-03 | 2019-11-01 | 曹开军 | Fore filter with strainer self-cleaning function |
| CN113694599A (en) * | 2021-01-19 | 2021-11-26 | 深圳市诚德来实业有限公司 | Novel automatic washing pre-filter |
| CN116983783A (en) * | 2023-09-26 | 2023-11-03 | 新乡市华航航空液压设备有限公司 | High-efficient high-pressure air filter |
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