CN211799169U - Spiral water inlet pre-filter with backwashing function - Google Patents
Spiral water inlet pre-filter with backwashing function Download PDFInfo
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- CN211799169U CN211799169U CN201921080234.6U CN201921080234U CN211799169U CN 211799169 U CN211799169 U CN 211799169U CN 201921080234 U CN201921080234 U CN 201921080234U CN 211799169 U CN211799169 U CN 211799169U
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Abstract
The utility model relates to a leading filter that has back flush function that spiral was intake, it includes: the filter comprises a machine head with a water inlet and a water outlet, and a filter flask which is matched with the machine head and is provided with a sewage discharge piece capable of being sealed, wherein a filtering and backwashing mechanism is arranged in the filter flask, a gap between the outside of the filtering and backwashing mechanism and the filter flask forms a raw water cavity, the inside of the filtering and backwashing mechanism forms a purified water cavity, the filtering and backwashing mechanism comprises a filtering element and a backwashing element which is coaxially arranged, the raw water cavity can be communicated with the water inlet of the filtering element, the purified water cavity is communicated with the water outlet, and the backwashing element can axially move relative to the filtering element and driven by pressure difference so as to realize the switching of the filtering function and the backwashing function; the water inlet end of the filter element is provided with at least one flow channel capable of accelerating the rotation speed of the inflow water flow. The utility model has the advantages of reasonable design, the equipment is simple and convenient, can realize the back flush through switching the runner.
Description
Technical Field
The utility model relates to a spiral is intake leading filter that has back flush function belongs to water treatment clarification plant technical field.
Background
The prior art pre-filter comprises: the filter flask that aircraft nose, upper end and aircraft nose are connected, the drainage sealing member of being connected with the filter flask lower extreme and the drainage ball valve of being connected with the drainage sealing member, be provided with the filter screen skeleton in the filter flask, the outer wall cover of filter screen skeleton is equipped with the filter screen. In the using process, water flows into a gap between the filter flask and the filter screen from the water inlet of the machine head, flows into the center of the filter screen framework after being filtered by the filter screen, and then flows to the water outlet of the machine head from the center of the filter screen framework.
With such a pre-filter, drinking water originating from a drinking water supply can be filtered before the drinking water is made available at the tap. The impurities accumulated in the filter screen gradually clog the filter screen. Thereby causing an undesirable pressure drop. Affecting the service life of the pre-filter. The manual unpicking and cleaning in the prior art has low cleaning efficiency and is easy to damage each component, therefore, a front filter component capable of backwashing needs to be designed, the filter screen is cleaned again by switching a flow passage and backwashing to generate water flow passing through the filter screen in the opposite direction, and water receiving impurities in the backwashing process is discharged through a drainage ball valve.
The utility model aims to solve the technical problem and provides a spiral water inlet prefilter with a backwashing function.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to solve the defects of the prior art and provide a spiral water inlet prefilter with a backwashing function.
The utility model provides a technical scheme that its technical problem adopted is:
leading filter that has back flush function of spiral intaking, it includes: the filter comprises a machine head with a water inlet and a water outlet, and a filter flask which is matched with the machine head and is provided with a sewage discharge piece capable of being sealed, wherein a filtering and backwashing mechanism is arranged in the filter flask, a gap between the outside of the filtering and backwashing mechanism and the filter flask forms a raw water cavity, the inside of the filtering and backwashing mechanism forms a purified water cavity, the filtering and backwashing mechanism comprises a filtering element and a backwashing element which is coaxially arranged, the raw water cavity can be communicated with the water inlet of the filtering element, the purified water cavity is communicated with the water outlet, and the backwashing element can axially move relative to the filtering element and driven by pressure difference so as to realize the switching of the filtering function and the backwashing function; the water inlet end of the filter element is provided with at least one flow channel capable of accelerating the rotation speed of the inflow water flow.
Preferably, the filter element consists of a filter screen body, a filter screen framework, and a water inlet end cover and a water discharge end cover which are positioned at two ends of the filter screen framework, the external dimension of the water inlet end cover is matched with the upper end part of the filter flask, the water inlet end cover is communicated with the inlet of the machine head, and a raw water cavity is formed between the filter screen body and the filter flask; the flow channel is arranged right below the water inlet end cover, is spiral and is formed by arranging an upper wing piece and a lower wing piece in a staggered mode; the backwashing component comprises a backwashing filter screen body, a backwashing filter screen framework, a backwashing filter screen lower sealing body with a drainage hole and an elastic resetting piece, wherein the backwashing filter screen body is sleeved at an assembly part of the backwashing filter screen framework, an assembly cavity of the backwashing filter screen body arranged in the machine head is sealed at two ends, the backwashing filter screen lower sealing body passes through a drainage end cover to be detachably connected with the backwashing filter screen framework, the drainage end cover is circumferentially sealed with the lower end of the backwashing filter screen framework, and two ends of the elastic resetting piece are respectively directly or indirectly abutted against the inner ends of the backwashing filter screen lower sealing body and the sewage discharging piece; the pressure difference is derived from the water pressure difference value at two ends of the lower sealing body of the back washing filter screen after the pollution discharge piece is opened, and the elastic reset piece can be compressed to a certain height by the pressure difference;
the back washing filter screen framework and the back washing filter screen body can synchronously move axially relative to the filter element under the driving of pressure difference, when the elastic reset piece is compressed, the elastic reset piece moves downwards and axially for a certain stroke, the lower working surface of the assembly part can seal the water inlet end cover, the back washing filter screen body leaks out, the switching of a flow passage is realized, and the back washing working mode is entered; the pressure difference is relieved, the elastic reset piece resets, the elastic reset piece axially moves upwards for a certain stroke, the water inlet end cover is opened on the lower working surface of the assembly part, the backwashing filter screen body is closed, the flow channel switching is realized, and the filtering working mode is entered.
Preferably, the lower sealing body of the back washing filter screen is fixed with the back washing filter screen framework in a threaded manner, including threaded connection through matching of a screw and a bolt.
Preferably, the lower seal body of the backwashing filter screen is axially provided with a sealing element which is circumferentially abutted and sealed with the inner wall of the bottom end of the filter element.
Preferably, the blowdown piece includes drainage ball valve and transition piece, and the transition piece is fixed with the filter flask, and the water inlet end spiro union of drainage ball valve is in the transition piece inner.
Preferably, the blowdown piece includes the ball valve cover, still is equipped with the filter flask cover outside the filter flask, and the ball valve cover is located outside the drainage ball valve and with the filter flask bottom mounting, and the filter flask is located to the filter flask cover outside.
Preferably, the elastic restoring member is an annular spring.
The utility model has the advantages that: the utility model has the advantages of reasonable design, the equipment is simple and convenient, can realize the back flush through switching the runner. When the filter works, water passes through the water inlet end cover from the inlet of the machine head and enters the interior of the filter screen body from the exterior of the filter screen body through the raw water cavity, impurities are intercepted by the filter screen body, and purified water entering the interior flows to the outlet of the machine head from the top of the sealing cover through the back washing filter screen framework;
when the filter screen is in a backwashing working state, the blowdown piece is opened, and the pressure drop at two ends of the blowdown hole of the lower sealing body of the filter screen is backwashing, so that the elastic resetting piece can be compressed to a certain height by the pressure difference; the back washing filter screen framework and the back washing filter screen body can synchronously move axially relative to the filter element under the driving of pressure difference, after the back washing filter screen framework and the back washing filter screen body move axially downwards for a certain stroke, the elastic reset piece is compressed, the lower working surface of the assembly part can seal the water inlet end cover, the back washing filter screen body leaks out, the switching of a flow passage is realized, and the back washing filter screen body enters a back washing working mode; the pressure difference is relieved, the elastic reset piece resets, after the elastic reset piece axially moves upwards for a certain stroke, the water inlet end cover is opened on the lower working surface of the assembly part, the backwashing filter screen body is closed, the flow channel switching is realized, and the filtering working mode is entered. Can be cleaned at any time, and has good cleaning effect.
Drawings
FIG. 1 is a perspective view of a pre-filter of the present invention;
FIG. 2 is an exploded view of the prefilter of the present invention;
FIG. 3 is a cross-sectional view of the pre-filter of the present invention in a filtered state;
FIG. 4 is a sectional view of the pre-filter of the present invention in a backwash state;
FIG. 5 is a schematic view of the filtering and backwashing mechanism of the pre-filter of the present invention in a filtering state; opening the part A;
fig. 6 is a schematic view of the filtering and backwashing mechanism of the pre-filter of the present invention in a backwashing state, with the part B closed.
In the figure: 1. the device comprises a machine head, 2, a filter bottle, 3, a sewage discharge piece, 4, a filter element, 41, a filter screen body, 42, a filter screen framework, 43, a water inlet end cover, 44, a water discharge end cover, 5, a backwashing element, 51, a backwashing filter screen body, 52, a backwashing filter screen framework, 52a, an assembly part, 53, a backwashing filter screen body assembly cavity, 54, a backwashing filter screen lower sealing body, 55, a water discharge hole, 56, a sealing piece, 57, an elastic resetting piece, 6, a transition piece, 7, a water discharge ball valve, 8, a ball valve cover, 9, a filter bottle cover, 10 and a flow channel.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 6, the prefilter with backwashing function for spiral inflow water comprises: the device comprises a machine head 1 with a water inlet and a water outlet, and a filter flask 2 which is matched with the machine head 1 and is provided with a sewage discharge part 3 capable of being sealed, wherein a filtering and back-flushing mechanism is arranged in the filter flask 2, a gap between the outside of the filtering and back-flushing mechanism and the filter flask 2 forms a raw water cavity, a purified water cavity is formed in the filtering and back-flushing mechanism, the filtering and back-flushing mechanism comprises a filtering element 4 and a back-flushing element 5 which is coaxially arranged, the raw water cavity can be communicated with the water inlet of the filtering element 4, the purified water cavity is communicated with the water outlet, and the back-flushing element 5 can axially move relative to the filtering element 4 driven by pressure difference so as to realize the switching; the water inlet end of the filter element 4 is provided with at least one flow channel 10 capable of accelerating the rotation speed of the inlet water flow.
Specifically, the filter element 4 consists of a filter screen body 41, a filter screen framework 42, and a water inlet end cover 43 and a water discharge end cover 44 which are positioned at two ends of the filter screen framework 42, wherein the external dimension of the water inlet end cover 43 is matched with the upper end part of the filter flask 2, the water inlet end cover 43 is communicated with the inlet of the machine head 1, and a raw water cavity is formed between the filter screen body 41 and the filter flask 2; the flow channel 10 is arranged right below the water inlet end cover 43, is spiral, is formed by arranging upper fins and lower fins in a staggered mode, and is integrally formed with the filter screen framework 42; the backwashing element 5 comprises a backwashing filter screen body 51, a backwashing filter screen framework 52, a backwashing filter screen lower sealing body 54 with a drainage hole 55 and an elastic resetting piece 57, wherein the backwashing filter screen body 51 is sleeved on an assembly part 52a of the backwashing filter screen framework 52, a backwashing filter screen body assembly cavity 53 arranged in the machine head 1 is sealed at two ends, the backwashing filter screen lower sealing body 54 passes through a drainage end cover 44 and is detachably connected with the backwashing filter screen framework 52, if the backwashing filter screen lower sealing body is connected with a bolt in a matching way through a screw, the drainage end cover 44 is circumferentially sealed with the lower end of the backwashing filter screen framework 52, and two ends of the elastic resetting piece 57 are respectively directly or indirectly abutted against the inner ends of the backwashing filter screen lower sealing body 54 and the sewage discharging piece 3; the pressure difference is derived from the water pressure difference value at two ends of the back washing filter screen lower sealing body 54 after the pollution discharge member 3 is opened, and the elastic resetting member 57 can be compressed to a certain height by the pressure difference; the back washing filter screen framework 52 and the back washing filter screen body 51 can synchronously move axially relative to the filter element 4 under the driving of pressure difference, when the elastic resetting piece 57 is compressed, the elastic resetting piece moves downwards and axially for a certain stroke, the working surface under the assembly part 52a can seal the water inlet end cover 43 (the part B in fig. 6 is sealed), the back washing filter screen body 51 leaks, the flow channel switching is realized, and the back washing working mode is entered; when the pressure difference is released, the elastic reset piece 57 resets, and after the upward axial movement is performed for a certain stroke, the water inlet end cover 43 is opened on the lower working surface of the assembly part 52a (the part a in fig. 5 is opened), the backwashing filter screen body 51 is closed, the flow channel switching is realized, and the filtering operation mode is entered.
It specifically arrives the utility model discloses, back flush filter screen lower body 54 is fixed with back flush filter screen skeleton 52 spiro union, include the cooperation spiro union through screw rod and bolt, back flush filter screen lower body 54 axial is equipped with sealing member 56, and is sealed with filter element 4's bottom inner wall circumference butt.
The blowdown piece 3 includes drainage ball valve 7 and transition piece 6, and transition piece 6 is fixed with filter flask 2, and the water inlet end spiro union of drainage ball valve 7 is in the inner of transition piece 6.
Blowdown piece 3 still includes ball valve cover 8, and filter flask 2 still is equipped with filter flask cover 9 outward, and 8 covers of ball valve cover locate outside drainage ball valve 7 and with filter flask 2 bottom mounting, and filter flask 2 outsidely is located to filter flask cover 9 covers, elasticity resets 57 and is the ring spring.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (7)
1. Leading filter that has back flush function of spiral intaking, it includes: the device comprises a machine head with a water inlet and a water outlet, and a filter flask which is matched with the machine head and is provided with a sewage discharge piece capable of being sealed, wherein a filtering and backwashing mechanism is arranged in the filter flask, a gap between the outside of the filtering and backwashing mechanism and the filter flask forms a raw water cavity, and the inside of the filtering and backwashing mechanism forms a purified water cavity; the water inlet end of the filter element is provided with at least one flow channel capable of accelerating the rotation speed of inflow water flow, and the flow channel and the filter screen framework are integrally formed.
2. The spiral inflow prefilter having a backwashing function as claimed in claim 1,
the filter element consists of a filter screen body, a filter screen framework, and a water inlet end cover and a water discharge end cover which are positioned at two ends of the filter screen framework, wherein the external dimension of the water inlet end cover is matched with the upper end part of the filter flask, the water inlet end cover is communicated with the inlet of the machine head, and a raw water cavity is formed between the filter screen body and the filter flask; the flow channel is arranged right below the water inlet end cover, is spiral and is formed by arranging an upper wing piece and a lower wing piece in a staggered mode;
the backwashing component comprises a backwashing filter screen body, a backwashing filter screen framework, a backwashing filter screen lower sealing body with a drainage hole and an elastic resetting piece, wherein the backwashing filter screen body is sleeved at an assembly part of the backwashing filter screen framework, an assembly cavity of the backwashing filter screen body arranged in the machine head is sealed at two ends, the backwashing filter screen lower sealing body passes through a drainage end cover to be detachably connected with the backwashing filter screen framework, the drainage end cover is circumferentially sealed with the lower end of the backwashing filter screen framework, and two ends of the elastic resetting piece are respectively directly or indirectly abutted against the inner ends of the backwashing filter screen lower sealing body and the sewage discharging piece; the pressure difference is derived from the water pressure difference value at two ends of the lower sealing body of the back washing filter screen after the pollution discharge piece is opened, and the elastic reset piece can be compressed to a certain height by the pressure difference;
the back washing filter screen framework and the back washing filter screen body can synchronously move axially relative to the filter element under the driving of pressure difference, when the elastic reset piece is compressed, the elastic reset piece moves downwards and axially for a certain stroke, the lower working surface of the assembly part can seal the water inlet end cover, the back washing filter screen body leaks out, the switching of a flow passage is realized, and the back washing working mode is entered; the pressure difference is relieved, the elastic reset piece resets, the elastic reset piece axially moves upwards for a certain stroke, the water inlet end cover is opened on the lower working surface of the assembly part, the backwashing filter screen body is closed, the flow channel switching is realized, and the filtering working mode is entered.
3. The spiral water inlet prefilter with a backwashing function as claimed in claim 2, wherein the backwashing filter screen lower sealing body is fixed with the backwashing filter screen framework in a threaded manner, including a threaded rod and a bolt.
4. The spiral water inlet prefilter having a backwashing function as claimed in claim 2, wherein a sealing member is axially arranged on the lower sealing body of the backwashing filter screen and is circumferentially abutted and sealed with the inner wall of the bottom end of the filter element.
5. The spiral inflow prefilter having a backwashing function as claimed in claim 2 wherein said drainage member comprises a drainage ball valve and a transition member, said transition member being secured to said filter flask, said drainage ball valve having an inlet end screwed into an inner end of said transition member.
6. The spiral inflow prefilter with a backwashing function as claimed in claim 1, wherein said drain member comprises a ball valve cover, a filter flask cover is further provided outside the filter flask, the ball valve cover is sleeved outside the drain ball valve and fixed to the bottom end of the filter flask, and the filter flask cover is sleeved outside the filter flask.
7. The spiral inflow prefilter of claim 2 wherein said resilient return member is an annular spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921080234.6U CN211799169U (en) | 2019-07-11 | 2019-07-11 | Spiral water inlet pre-filter with backwashing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921080234.6U CN211799169U (en) | 2019-07-11 | 2019-07-11 | Spiral water inlet pre-filter with backwashing function |
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| Publication Number | Publication Date |
|---|---|
| CN211799169U true CN211799169U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921080234.6U Active CN211799169U (en) | 2019-07-11 | 2019-07-11 | Spiral water inlet pre-filter with backwashing function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509785A (en) * | 2021-07-27 | 2021-10-19 | 陶孟银 | Back-washing pre-filter |
| CN113617097A (en) * | 2021-09-09 | 2021-11-09 | 广东省水利电力勘测设计研究院有限公司 | Filter equipment for irrigation |
| WO2024099355A1 (en) * | 2022-11-11 | 2024-05-16 | 海宁市倍世环保科技有限公司 | Stacked disc combined vertical pre-filter with backwashing function |
-
2019
- 2019-07-11 CN CN201921080234.6U patent/CN211799169U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509785A (en) * | 2021-07-27 | 2021-10-19 | 陶孟银 | Back-washing pre-filter |
| CN113617097A (en) * | 2021-09-09 | 2021-11-09 | 广东省水利电力勘测设计研究院有限公司 | Filter equipment for irrigation |
| WO2024099355A1 (en) * | 2022-11-11 | 2024-05-16 | 海宁市倍世环保科技有限公司 | Stacked disc combined vertical pre-filter with backwashing function |
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