CN115646018A - Lamination combined type vertical preposed filter with backwashing function - Google Patents
Lamination combined type vertical preposed filter with backwashing function Download PDFInfo
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- CN115646018A CN115646018A CN202211411272.1A CN202211411272A CN115646018A CN 115646018 A CN115646018 A CN 115646018A CN 202211411272 A CN202211411272 A CN 202211411272A CN 115646018 A CN115646018 A CN 115646018A
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Abstract
The invention relates to a laminated composite vertical pre-filter with a back washing function, which comprises a machine head with a water inlet and a water outlet, and a filter flask matched with the machine head, wherein a sewage discharge piece is arranged at the bottom end of the filter flask; a raw water cavity is arranged between the lamination subunit and the filter flask, a primary purified water cavity is arranged between the lamination subunit and the filtering function section, a secondary purified water cavity is arranged inside the filtering function section, and the raw water cavity and the primary purified water cavity are communicated through a filtering hole of the lamination subunit. The structure of the pre-filter is optimized, and the pre-filter can perform in-situ backwashing and has a good flushing effect.
Description
Technical Field
The invention relates to a laminated combined type vertical front filter with a back flushing function, and belongs to the technical field of water purification equipment.
Background
Municipal tap water has secondary pollution such as pipeline corrosion, silt and the like to cause the quality of domestic water to be poor, and a pre-filter is usually installed on a household pipeline to improve the quality of the water. The filter element of the pre-filter in the market at present mainly takes a filter screen type structure as a main part, the cleaning method of the filter element comprises positive washing, back washing, siphon cleaning or scrubbing and the like, and the filter screen type filter element has the limitation that the filter element is difficult to clean and is automatically washed or scrubbed, so that the service life of the filter screen type filter element is short, and the use cost of a user is high.
The laminated filter consists of a group of discs with grooves on two sides, water flows through the laminated filter, and solid matters in water can be trapped by cross points formed by edges of the grooves. When the filter element lamination needs to be cleaned, the filter element lamination can be conveniently washed clean and then assembled for recycling.
No matter the single filter screen type structure or the laminated structure, the filter efficiency is low or the risk of failure exists, and how to effectively combine the filter screen type structure and the laminated structure to play a role in collaborative filtering is a technical problem to be solved.
In addition, the preposed filter in the prior art is mostly in a T shape, the filter flask is vertically arranged on the machine head, and the filter elements are also vertically arranged in the filter flask. Specifically, in the backwash structure, there are a series of backwash implementation manners in the prior art, but the structure implementation manner is complicated, or the backwash effect is not good. The invention aims to provide a vertical pre-filter which is optimized in structure, can be back-flushed in situ and combines a laminated filter structure and a filter screen type filter structure.
Disclosure of Invention
One of the purposes of the invention is to solve the defects of the T-shaped pre-filter in the prior art and provide a laminated composite vertical pre-filter with a back-washing function. The structure of the pre-filter is optimized, the pre-filter can perform in-situ backwashing, has a good flushing effect and can be matched with a transverse installation space.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the laminated composite type vertical preposed filter with the back flushing function comprises a machine head with a water inlet and a water outlet and a filter flask matched with the machine head, wherein a sewage discharge piece is arranged at the bottom end of the filter flask; a raw water cavity is arranged between the lamination subunit and the filter flask, a primary purified water cavity is arranged between the lamination subunit and the filtering function section, a secondary purified water cavity is arranged inside the filtering function section, the raw water cavity and the primary purified water cavity are communicated through a filtering hole of the lamination subunit, the primary purified water cavity is communicated with the secondary purified water cavity through a filtering hole of the filtering function section, the secondary purified water cavity is communicated with the water outlet port, and the raw water cavity is communicated with a sewage discharge cavity of the sewage discharge piece; the lamination subunit is provided with a water inlet channel, the backwashing functional section is provided with a backwashing water channel and is positioned in the cavity of the base, an adjusting component is arranged between the filtering and backwashing subunit and the bottom of the filter flask or between the filtering and backwashing subunit, the filtering and backwashing subunit can axially move relative to the lamination subunit through the matching of the adjusting component, and the filtering and backwashing subunit axially moves along the sewage drainage flow direction, so that the water inlet channel can be closed and the backwashing water channel can be opened; the filtering and backwashing subunit moves axially against the direction of sewage flow, and can open the water inlet channel and close the backwashing water channel.
Preferably, the adjusting assembly is arranged between the filtering and backwashing subunit and the bottom of the filter bottle and comprises an elastic resetting piece, the elastic resetting piece is sleeved on the filtering and backwashing subunit, two ends of the elastic resetting piece are respectively abutted against the bottom of the filter bottle and the end part of the filtering and backwashing subunit, a pressure difference delta P exists between two sides of the end part of the filtering and backwashing subunit, the delta P is not less than 0, when the acting force corresponding to the delta P is greater than the reacting force of the elastic resetting piece, the elastic resetting piece is compressed, and the filtering and backwashing subunit axially moves along the sewage discharge flow direction; when the acting force corresponding to the delta P is smaller than the reacting force of the elastic resetting piece, the elastic resetting piece resets, and the filtering and backwashing subunit axially moves along the direction opposite to the sewage flow;
or the adjusting component is arranged between the filtering and backwashing subunit and the lamination subunit and comprises an elastic resetting piece, the elastic resetting piece is sleeved on the filtering and backwashing subunit, the filtering and backwashing subunit is provided with a limiting part, two ends of the elastic resetting piece are respectively abutted against the limiting part and the inner wall of the lamination subunit, pressure difference delta P exists between two sides of the end part of the filtering and backwashing subunit, the delta P is not less than 0, when the acting force corresponding to the delta P is greater than the reacting force of the elastic resetting piece, the elastic resetting piece is compressed, and the filtering and backwashing subunit axially moves along the sewage flow direction; when the acting force corresponding to the delta P is smaller than the reacting force of the elastic resetting piece, the elastic resetting piece resets, and the filtering and backwashing subunit axially moves along the direction opposite to the sewage flow.
Preferably, the filtering and backwashing subunit comprises a filter screen framework, the filter screen framework comprises a backwashing framework section, a filtering framework section and an assembly section, a backwashing filter screen is fixedly arranged on the backwashing framework section, a filter screen is fixedly arranged on the filtering framework section, the lamination subunit comprises a lamination framework and a plurality of laminations fixed outside the lamination framework, a first end cover and a second end cover are respectively arranged at two ends of the lamination framework, a water inlet channel is arranged on the first end cover, a backwashing opening cover is arranged at one side of the second end cover of the filter screen framework, a raw water passing channel is arranged between the second end cover and the filter flask or between the second end cover, a backwashing drainage channel is arranged on the backwashing opening cover, a sewage discharge cavity of the sewage discharge part is communicated with the raw water cavity through the raw water passing channel and the backwashing drainage channel, a sealing part is arranged at a position close to the outer side of the first end cover of the backwashing framework section, the elastic resetting part is sleeved on the assembly section, two ends of the elastic resetting part are respectively abutted against the inner wall of the filter flask and the backwashing opening end cover, a pressure difference delta P exists at two sides of the opening end cover, the filtering and the lamination is axially moved relative to the filtering and downstream of the lamination subunit, and the filtering subunit, and the water inlet channel can be closed by the sealing part; the filtering and back-flushing subunit axially moves relative to the lamination subunit in the direction opposite to the sewage discharge direction, and the sealing part can open the water inlet channel.
Preferably, the lamination subunit still includes the lamination regulating part, and the lamination skeleton is equipped with the regulating part of adaptation, through the cooperation of regulating part and lamination regulating part, realizes the fixed of lamination and the regulation of filtering the aperture.
Preferably, a laminated framework limiting part is arranged in the filter bottle, a first end cover of the laminated framework is provided with a positioning part, the first end cover is in butt fit with the laminated framework limiting part through the positioning part to limit the position axially, and a sealing element or interference fit is arranged between the first end cover and the filter bottle; and two ends of the filtering functional section are connected with the inner wall of the lamination subunit in a sliding and sealing manner.
Preferably, an elastic buffer piece is further arranged between the lamination adjusting piece and the second end cover.
Preferably, the elastic restoring member is an annular compression spring.
Preferably, two ends of the back washing functional section are connected with the inner wall of the cavity of the base in a sliding and sealing mode.
Preferably, sealing elements are arranged at two ends of the backwashing framework section, and the backwashing framework section is in sliding sealing connection with the base cavity through the matching of the sealing elements and the inner wall of the base cavity.
Preferably, the outer port of the blowdown piece is provided with a blowdown valve, and the blowdown valve is a manual blowdown valve or an electric blowdown valve or a manual-automatic blowdown valve.
The beneficial effects of the invention are: the structure of the pre-filter is optimized, the pre-filter can perform in-situ backwashing, has a good flushing effect, and can be matched with a transverse installation space. In addition, the laminated composite filtering structure provided by the invention integrates the filtering structure of the filter screen and the laminated filtering structure, protects each other, exerts a synergistic filtering effect, can provide filtering efficiency and improves the filtering effect. Specifically, raw water is filtered by a lamination filtering unit to remove a large amount of impurities such as rust, silt and the like, and then enters a filter screen filtering unit for further and fully filtering. The lamination filter unit is used for pre-filtering and then the filter screen is used for fine filtering, so that the problem of single lamination filtering failure can be solved, and the problem that a large amount of impurities are enriched on the surface of the filter screen filtering structure to influence the filtering efficiency and the service life can be avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the laminated composite filter unit of FIG. 1;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a cross-sectional view of FIG. 1 (filtered state);
fig. 5 is a sectional view of fig. 1 (backwash sewage state).
In the figure: 1. the device comprises a machine head, 2, a filter flask, 21, a lamination framework limiting part, 3, a sewage discharging part, 4, a filter screen framework, 41, a back washing filter screen, 42, a filter screen, 43, a back washing opening end cover, 44, a sealing part, 5, a lamination framework, 6, a lamination, 51, a first end cover, 52, a second end cover, 7, an elastic resetting part, 8, a lamination adjusting part, 9 and an elastic buffer part.
Detailed Description
The technical solution of the present invention is further specifically described below by using specific embodiments and with reference to the accompanying drawings.
Example (b):
as shown in fig. 1-2, the laminated composite vertical pre-filter with backwashing function comprises a machine head 1 with a water inlet and a water outlet, and a filter flask 2 adapted to the machine head 1, wherein a blowdown part 3 is arranged at the bottom end of the filter flask 2, the machine head 1 is provided with a base adapted to the end part of the filter flask 2, a base cavity is arranged in the base, the base cavity is communicated with the water outlet, a laminated composite filter unit is arranged in the filter flask 2, the laminated composite filter unit comprises a filter and backwashing subunit and a lamination subunit, the filter and backwashing subunit is inserted in the lamination subunit, and the filter and backwashing subunit comprises a filter function section and a backwashing function section; a raw water cavity is arranged between the lamination subunit and the filter bottle 2, a primary purified water cavity is arranged between the lamination subunit and the filtering function section, a secondary purified water cavity is arranged inside the filtering function section, the raw water cavity and the primary purified water cavity are communicated through a filtering hole of the lamination subunit, the primary purified water cavity is communicated with the secondary purified water cavity through a filtering hole of the filtering function section, the secondary purified water cavity is communicated with a water outlet port, and the raw water cavity is communicated with a sewage discharge cavity of a sewage discharge piece; the laminated subunit is provided with a water inlet channel, the backwashing functional section is provided with a backwashing water channel and is positioned in the cavity of the base, an adjusting component is arranged between the filtering and backwashing subunit and the sewage discharging part, the filtering and backwashing subunit can axially move relative to the laminated subunit through the matching of the adjusting component, and the filtering and backwashing subunit axially moves along the sewage discharge flow direction, so that the water inlet channel can be closed and the backwashing water channel can be opened; the filtering and backwashing subunit moves axially against the direction of sewage flow, and can open the water inlet channel and close the backwashing water channel.
Specifically, in this embodiment, the adjusting assembly includes an elastic restoring member 7, the elastic restoring member 7 is sleeved on the filtering and backwashing subunit, two ends of the elastic restoring member 7 are respectively abutted to the inner wall of the sewage draining member and the end of the filtering and backwashing subunit, a pressure difference Δ P exists between two sides of the end of the filtering and backwashing subunit, Δ P is not less than 0, when an acting force corresponding to Δ P is greater than a reaction force of the elastic restoring member 7, the elastic restoring member 7 is compressed, and the filtering and backwashing subunit axially moves along the sewage discharge direction; when the acting force corresponding to the delta P is smaller than the reacting force of the elastic resetting piece 7, the elastic resetting piece 7 is reset, and the filtering and backwashing subunit axially moves along the direction opposite to the sewage flow.
Aiming at the structure of the laminated composite filtering unit, the structure is further explained as follows, the filtering and backwashing subunit comprises a filter screen framework 4, the filter screen framework 4 comprises a backwashing framework section, a filtering framework section and an assembly section, a backwashing filter screen 41 is fixedly arranged on the backwashing framework section, a filter screen 42 is fixedly arranged on the filtering framework section, the laminating subunit comprises a laminating framework 5 and a plurality of laminates 6 fixed outside the laminating framework 5, a first end cover 51 and a second end cover 52 are respectively arranged at two ends of the laminating framework 5, a water inlet channel is arranged on the first end cover 51, a backwashing opening cover 43 is arranged at one side of the second end cover 52 of the filter screen framework 4, a raw water passing channel is arranged between the second end cover 52 and the filter bottle 2 or on the second end cover 52, the back washing opening cover 43 is provided with a back washing drainage channel, a sewage discharge cavity of the sewage discharge part 3 is communicated with the raw water cavity through the raw water passing channel and the back washing drainage channel, a sealing part 44 is arranged at a position, close to the outer side of the first end cover 51, of the back washing framework section, the elastic resetting part 7 is sleeved on the assembly section, two ends of the elastic resetting part 7 are respectively abutted against the inner wall of the sewage discharge part 3 or the inner wall of the filter bottle 2 and the back washing opening end cover 43, a pressure difference delta P exists at two sides of the back washing opening end cover 43, the delta P is not less than 0, the filtering and back washing subunit axially moves relative to the lamination subunit along the sewage flow direction, and the sealing part 44 can close the water inlet channel; the filtering and backwashing subunit moves axially relative to the lamination subunit against the direction of sewage flow and the seal 44 opens the water inlet passage.
In this embodiment, the lamination subunit still includes lamination regulating part 8, and lamination skeleton 5 is equipped with the regulating part of adaptation, through the cooperation of regulating part and lamination regulating part 8, realizes the fixed of lamination 6 and the regulation of filtering the aperture.
Furthermore, a lamination frame limiting part is arranged in the filter bottle 2, a first end cover 51 of the lamination frame 5 is provided with a positioning part, the axial limiting is matched through the abutting of the positioning part and the lamination frame limiting part (as shown in fig. 4 and 5, the abutting and limiting are realized by adopting concave-convex abutting and matching), and a sealing element or interference fit is arranged between the first end cover 51 and the filter bottle 2; and two ends of the filtering functional section are connected with the inner wall of the lamination subunit in a sliding and sealing manner.
In this embodiment, an elastic buffer 9 is further disposed between the lamination adjuster 8 and the second end cap 52. In this embodiment, the elastic restoring member 7 is an annular compression spring.
In order to ensure the filtering and backwashing effects, two ends of the backwashing functional section are connected with the inner wall of the cavity of the base in a sliding and sealing manner. Specifically, sealing elements are arranged at two ends of the backwashing framework section, and the backwashing framework section is in sliding sealing connection with the base cavity through the matching of the sealing elements and the inner wall of the base cavity.
In this embodiment, a blowoff valve 31 is arranged at an outer port of the blowoff member 3, and the blowoff valve 31 is a manual blowoff valve, an electric blowoff valve or a manual-automatic integral blowoff valve.
The working principle of the invention is as follows:
in the filtering state, the blowoff valve 31 is closed, the blowoff cavity is closed, the pressure difference Δ P =0 between the two sides of the end of the filtering and backwashing subunit, at this time, the elastic reset piece 7 is in the initial state, the positions of the filtering and backwashing subunit and the lamination subunit are in the initial state, the backwashing channel (backwashing filter screen) of the filtering and backwashing subunit is located in the base cavity, as shown in fig. 4, raw water enters from the water inlet of the handpiece 1, enters the raw water cavity through the water inlet channel of the first end cover 51, enters the primary purified water cavity after being filtered by the lamination subunit, enters the secondary purified water cavity after being filtered by the filtering functional section, and then is discharged through the water outlet of the handpiece 1;
in the back flushing sewage discharging state, the sewage discharging valve 31 is opened, the sewage discharging cavity is correspondingly opened, the pressure difference between two sides of the end part of the filtering and back flushing subunit is increased to be larger from delta P =0 until the corresponding acting force is larger than the reacting force of the elastic resetting piece 7, at the moment, the elastic resetting piece 7 is in a compression state, the filtering and back flushing subunit moves in the sewage discharging flow direction relative to the lamination subunit, a back flushing channel (back flushing filter screen) of the filtering and back flushing subunit extends out of the base cavity and is opened, as shown in fig. 5, a sealing part 44 seals a water inlet channel, raw water enters from a water inlet of the machine head 1, flows through the back flushing filter screen, enters a secondary purified water cavity, reversely flushes a filtering function section, enters a primary purified water cavity, then reversely flushes the lamination subunit, flows to the raw water cavity, then enters the sewage discharging cavity through the sewage discharging channel and the back flushing through the sewage discharging valve 31, and the back flushing function section and the lamination subunit are realized.
The beneficial effects of the invention are: the structure of the pre-filter is optimized, the pre-filter can perform in-situ backwashing, has a good flushing effect and can be matched with a transverse installation space. In addition, the laminated composite filtering structure provided by the invention integrates the filtering structure of the filter screen and the laminated filtering structure, protects each other, exerts a synergistic filtering effect, can provide filtering efficiency and improves the filtering effect. Specifically, raw water is filtered by a lamination filtering unit to remove a large amount of impurities such as rust, silt and the like, and then enters a filter screen filtering unit for further and fully filtering. The lamination filter unit is used for pre-filtering and then the filter screen is used for fine filtering, so that the problem of single lamination filtering failure can be solved, and the problem that a large amount of impurities are enriched on the surface of the filter screen filtering structure to influence the filtering efficiency and the service life can be avoided.
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 spirit of the invention as set forth in the claims. If the adjusting component is arranged between the filtering and backwashing subunit and the lamination subunit, specifically, the elastic reset component is sleeved on the filter screen framework 4, the end part of the filter screen framework 4 positioned at the filtering function section is provided with a limiting part, and two ends of the elastic reset component 7 are respectively abutted against the limiting part and the inner wall of the second end cover 52, the arrangement mode is similarly described in the invention patent of the front filter component which can be backwashed and is No. 201610948125.6.
Claims (10)
1. Vertical leading filter of lamination combined type with back flush function, including the aircraft nose of taking into mouth of a river and delivery port, with the filter flask of aircraft nose adaptation, the filter flask bottom is equipped with blowdown spare, its characterized in that: the machine head is provided with a base matched with the end part of the filter flask, a base cavity is arranged in the base and is communicated with the water outlet, a lamination combined type filtering unit is arranged in the filter flask and comprises a filtering and backwashing subunit and a lamination subunit, the filtering and backwashing subunit is inserted in the lamination subunit, and the filtering and backwashing subunit comprises a filtering functional section and a backwashing functional section; a raw water cavity is arranged between the lamination subunit and the filter flask, a primary purified water cavity is arranged between the lamination subunit and the filtering function section, a secondary purified water cavity is arranged in the filtering function section, the raw water cavity and the primary purified water cavity are communicated through a filtering hole of the lamination subunit, the primary purified water cavity is communicated with the secondary purified water cavity through a filtering hole of the filtering function section, the secondary purified water cavity is communicated with a water outlet port, and the raw water cavity is communicated with a sewage discharge cavity of the sewage discharge piece; the lamination subunit is provided with a water inlet channel, the backwashing functional section is provided with a backwashing water channel and is positioned in the cavity of the base, an adjusting component is arranged between the filtering and backwashing subunit and the bottom of the filter flask or between the filtering and backwashing subunit, the filtering and backwashing subunit can axially move relative to the lamination subunit through the matching of the adjusting component, and the filtering and backwashing subunit axially moves along the sewage drainage flow direction, so that the water inlet channel can be closed and the backwashing water channel can be opened; the filtering and backwashing subunit moves axially against the direction of sewage flow, and can open the water inlet channel and close the backwashing water channel.
2. The laminated composite vertical pre-filter with backwashing function as claimed in claim 1, wherein the adjusting assembly is arranged between the filtering and backwashing subunit and the bottom of the filter flask, and comprises an elastic resetting member, the elastic resetting member is sleeved on the filtering and backwashing subunit, two ends of the elastic resetting member are respectively abutted against the bottom of the filter flask and the end of the filtering and backwashing subunit, a pressure difference Δ P exists between two sides of the end of the filtering and backwashing subunit, Δ P is not less than 0, when the acting force corresponding to Δ P is greater than the reacting force of the elastic resetting member, the elastic resetting member is compressed, and the filtering and backwashing subunit axially moves along the sewage flow direction; when the acting force corresponding to the delta P is smaller than the reacting force of the elastic resetting piece, the elastic resetting piece resets, and the filtering and backwashing subunit axially moves along the direction opposite to the sewage flow;
or the adjusting component is arranged between the filtering and backwashing subunit and the lamination subunit and comprises an elastic resetting piece, the elastic resetting piece is sleeved on the filtering and backwashing subunit, the filtering and backwashing subunit is provided with a limiting part, two ends of the elastic resetting piece are respectively abutted against the limiting part and the inner wall of the lamination subunit, pressure difference delta P exists between two sides of the end part of the filtering and backwashing subunit, the delta P is not less than 0, when the acting force corresponding to the delta P is greater than the reacting force of the elastic resetting piece, the elastic resetting piece is compressed, and the filtering and backwashing subunit axially moves along the sewage flow direction; when the acting force corresponding to the delta P is smaller than the reacting force of the elastic resetting piece, the elastic resetting piece resets, and the filtering and back-flushing subunit axially moves along the direction opposite to the sewage flow.
3. The laminated composite vertical pre-filter with backwashing function as claimed in claim 2, wherein the filtering and backwashing subunit includes a filter screen framework, the filter screen framework includes a backwashing framework section, a filtering framework section and an assembly section, the backwashing framework section is fixedly provided with a backwashing filter screen, the filtering framework section is fixedly provided with a filter screen, the laminated subunit includes a laminated framework and a plurality of laminated sheets fixed outside the laminated framework, two ends of the laminated framework are respectively provided with a first end cover and a second end cover, the water inlet channel is arranged on the first end cover, one side of the filter screen framework located on the second end cover is provided with a backwashing opening cover, the second end cover and the filter flask or the second end cover are provided with a raw water channel, the backwashing opening cover is provided with a backwashing drainage channel, a sewage discharge cavity of the sewage discharge member is communicated with the backwashing cavity through the raw water channel and the backwashing drainage channel, the backwashing framework backwashing section is provided with a sealing portion at a position close to the outer side of the first end cover, the elastic reset member is sleeved on the assembly section, two ends of the elastic reset member are respectively abutted against the inner wall of the filter flask and the opening end cover, a pressure difference P exists at two sides of the opening end cover, the filtering and the filtering subunit can move along the axial direction of the laminated sheet, and the sewage inlet water channel can be closed; the filtering and back-flushing subunit axially moves relative to the lamination subunit in the direction opposite to the sewage discharge direction, and the sealing part can open the water inlet channel.
4. The lamination composite type vertical pre-filter with backwashing function of claim 3, wherein: the lamination subunit still includes the lamination regulating part, and the lamination skeleton is equipped with the regulating part of adaptation, through the cooperation of regulating part and lamination regulating part, realizes the fixed of lamination and the regulation of filtering the aperture.
5. The lamination composite type vertical pre-filter with backwashing function as claimed in claim 3 or 4, wherein: a laminated framework limiting part is arranged in the filter bottle, a first end cover of the laminated framework is provided with a positioning part, the first end cover is in butt fit with the laminated framework limiting part through the positioning part to limit the laminated framework in the axial direction, and a sealing element or interference fit is arranged between the first end cover and the filter bottle; and two ends of the filtering functional section are connected with the inner wall of the lamination subunit in a sliding and sealing manner.
6. The lamination composite type vertical pre-filter with backwashing function as claimed in claim 3 or 4, wherein: an elastic buffer piece is further arranged between the lamination adjusting piece and the second end cover.
7. The lamination composite type vertical pre-filter with backwashing function as claimed in claim 2 or 3, wherein: the elastic reset piece is an annular compression spring.
8. The laminated composite vertical prefilter with back-flushing function according to claim 1 or 2 wherein both ends of said back-flushing functional section are in sliding and sealing connection with the inner wall of said cavity of said base.
9. The laminated composite type vertical pre-filter with backwashing function as claimed in claim 3 or 4, wherein sealing elements are disposed at two ends of the backwashing framework section, and the backwashing framework section is connected with the base cavity in a sliding and sealing manner through the matching of the sealing elements and the inner wall of the base cavity.
10. The lamination composite type vertical pre-filter with backwashing function as claimed in claim 1 or 2, wherein: the outer port of the blowdown piece is provided with a blowdown valve, and the blowdown valve is a manual blowdown valve or an electric blowdown valve or a manual-automatic integral blowdown valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411272.1A CN115646018A (en) | 2022-11-11 | 2022-11-11 | Lamination combined type vertical preposed filter with backwashing function |
| PCT/CN2023/130445 WO2024099355A1 (en) | 2022-11-11 | 2023-11-08 | Stacked disc combined vertical pre-filter with backwashing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411272.1A CN115646018A (en) | 2022-11-11 | 2022-11-11 | Lamination combined type vertical preposed filter with backwashing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115646018A true CN115646018A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211411272.1A Pending CN115646018A (en) | 2022-11-11 | 2022-11-11 | Lamination combined type vertical preposed filter with backwashing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115646018A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2022
- 2022-11-11 CN CN202211411272.1A patent/CN115646018A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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