CN216498019U - Off-line back flushing device for large-flow filter element - Google Patents
Off-line back flushing device for large-flow filter element Download PDFInfo
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- CN216498019U CN216498019U CN202123382329.3U CN202123382329U CN216498019U CN 216498019 U CN216498019 U CN 216498019U CN 202123382329 U CN202123382329 U CN 202123382329U CN 216498019 U CN216498019 U CN 216498019U
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Abstract
The utility model discloses a high-flow filter element off-line backwashing device which comprises a filter element, a filter, a water pipeline assembly, an air pipeline assembly, a dosing pipe assembly, an electric cabinet and a filter water inlet pneumatic valve, wherein a filter air outlet electromagnetic valve is arranged at an air outlet of the filter; when the air pipe electromagnetic valve is closed, the filter air outlet electromagnetic valve, the filter water inlet pneumatic valve, the filter water outlet back pressure valve and the water pipe pneumatic valve are opened, and when water overflows from the water pipe at the outlet of the filter air outlet electromagnetic valve, the filter air outlet electromagnetic valve is closed and enters a water backwashing state; and opening the electromagnetic valve to carry out air backwashing, simultaneously carrying out water washing and air washing, and closing the air pipe electromagnetic valve to stop air washing after washing a barrel of water. And observing the differential pressure transmitter, emptying the internal aqueous solution after the set value is reached, and stopping the machine. The device solves the problems of incomplete back washing and incapability of indicating the washing end point in the prior art, can continuously wash, saves labor and improves the washing efficiency and quality.
Description
Technical Field
The utility model relates to the field of water treatment devices, in particular to a large-flow filter element off-line backwashing device.
Background
The filter is widely used in the water treatment industry, the most key element of the filter playing a role in filtering is a filter element, the filter in the water treatment industry mostly uses a large-flow filter element, however, the existing large-flow filter element cannot be reused, the common filter element needs to be replaced when the working pressure difference reaches 0.2MPa, the filter element is discarded when the common filter element is used, and the production cost of a user manufacturer is huge. In order to reduce the production cost, a user generally washes the replaced filter element, so that the aim of reuse is fulfilled.
The filter element is washed in the prior art by placing the filter element to be washed in a water tank of diluted acid solution or alkali solution for soaking, washing the filter element by using a PVC hose connected with a faucet after soaking, washing the inner surface and the outer surface of the filter element by using a water column sprayed by the pressure of tap water, and after washing for a period of time, placing the filter element at a proper position for keeping the filter element. Then the above washing process is repeated, and the washing is carried out one by one and the washing is well preserved.
The simple flushing device has poor flushing effect and can not meet the flushing requirement, and the main defects comprise the following types:
because of the special structure of the filter element, the solid particles on the surface of the filter element are only washed away by using the washing equipment, and the solid particles can pass through the outside of the filter element to enter the inside of the filter element only by a certain water pressure, so that the solid particles in the filter material are still in the washing equipment, and the washed filter element reaches the upper limit of the pressure difference after being used for a short time, thereby causing the filter device to alarm and be unusable. The above phenomena show that no flushing effect is achieved with this flushing device.
Moreover, the user cannot know how long the flushing is carried out or the flushing degree is not qualified by using the device, great trouble is brought to the user, and the judgment basis of the qualified flushing is not available by using the device for flushing.
The existing filter element flushing equipment does not meet the flushing requirement, so that a large amount of filter elements reaching the upper limit of pressure difference are accumulated, a large space is occupied after accumulation, the production cost is not reduced, the management cost and the site cost are increased, and the smooth production is delayed.
In the prior art, some non-large-flow filter elements such as a wire winding filter element, an online dosing system and an online backwashing system are integrated, so that dosing and flushing can be carried out while production and use are carried out, the filter elements are always arranged in a filter, and water production and backwashing are carried out alternately. And online backwashing equipment for large-flow pleated filter elements does not exist at present.
Based on the above reality, new equipment is urgently needed to replace.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a large-flow filter element off-line backwashing device, which solves the problems of incomplete backwashing and incapability of indicating a flushing end point in the prior art, can continuously flush, saves labor and improves the flushing efficiency and quality.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a high-flow filter core off-line backwashing device comprises a filter, a water pipeline assembly, an air pipeline assembly, a medicine feeding pipe assembly and an electric cabinet, wherein the filter can be provided with a filter core to be backwashed, the water pipeline assembly is used for water washing, the air pipeline assembly is used for air washing, the medicine feeding pipe assembly is used for soaking, the upper part of the filter is provided with an air outlet, the lower part of the filter is provided with a water inlet, an air inlet and a water outlet, the water inlet is connected with the water pipeline assembly and the medicine feeding pipe assembly, the air inlet is connected with the air pipeline assembly, the water inlet of the filter is provided with a filter water inlet pneumatic valve, the water outlet is provided with a water outlet back pressure valve, and the air outlet of the filter is provided with a filter air outlet solenoid valve;
the water pipeline assembly comprises a water storage tank, a water storage tank liquid level control switch arranged on the water storage tank, a water storage tank water inlet pneumatic valve arranged on a water storage tank water inlet pipe, and a water pipe pneumatic valve arranged between the water storage tank and the filter water inlet pneumatic valve,
the air pipeline assembly comprises an air compressor and an air pipe electromagnetic valve arranged between the air compressor and the filter;
the filter is provided with a differential pressure transmitter for detecting the differential pressure of the filter element; a filter liquid level control switch is arranged on the filter;
when the air pipe electromagnetic valve is closed, the filter air outlet electromagnetic valve, the filter water inlet pneumatic valve, the filter water outlet back pressure valve and the water pipe pneumatic valve are opened to carry out water backwashing; and opening the air pipe electromagnetic valve for air washing, performing water washing and air washing simultaneously, closing the air pipe electromagnetic valve after washing a tank of water, emptying the internal aqueous solution after observing that the numerical value of the differential pressure transmitter reaches a set value, and stopping the machine to finish washing.
The equipment is provided with a filter which can be provided with a filter element to be backwashed, and the filter is provided with a water inlet, an air inlet, a water outlet and an air outlet. Because the large-flow filter element is large in size, the filter is vertically placed to save space, the water inlet, the air inlet and the water outlet are arranged at the lower part of the filter, and the air outlet is arranged at the upper part of the filter. A water inlet pneumatic valve of the filter is arranged on a water inlet of the filter, a water outlet back pressure valve is arranged on a water outlet of the filter, and a gas outlet electromagnetic valve of the filter is arranged on a gas outlet of the filter;
the automatic flushing is realized through PLC programming in the electric cabinet, the electric cabinet controls the air pipe electromagnetic valve to be closed, the filter air outlet electromagnetic valve, the filter water inlet pneumatic valve and the water pipe pneumatic valve are opened, and water in the water pipe assembly enters the inside of the filter to be backwashed. And the electric cabinet controls the air outlet electromagnetic valve of the filter to be closed, and the air pipe electromagnetic valve is started to perform air backwashing. The water washing and the air washing are carried out simultaneously, and after one tank of water is washed, the air pipe electromagnetic valve is closed, and the air washing is stopped. And after the numerical value of the differential pressure transmitter is observed to reach a set value, the internal aqueous solution is emptied, the machine is stopped, and the flushing is finished. The initial pressure difference of the filter element after installation is generally 0.15MPa, and the filter element is not flushed until the pressure difference transmitter detects that the pressure difference at the two ends of the filter element is 0.05MPa after water backwashing.
Compared with the prior art, the utility model has the following technical effects:
1. different from the online equipment, the filter element washed by the filter element offline washing equipment is a large-flow filter element eliminated from a production line, about one hundred filter elements can be washed in one day, and the equipment can realize all-weather washing.
2. Automatic back flushing is realized, and manpower is saved.
3. Through repeated water back washing and gas back washing, the washing efficiency is improved, the washing is more thorough, and the problem that the large-flow pleated filter element is difficult to wash is solved.
4. The flushing effect can be visually considered through the pressure difference between the upstream and the downstream of the filter element, and the flushing standard is established.
Drawings
FIG. 1 is a schematic view of the filter of the present invention;
FIG. 2 is a process flow diagram of the present invention.
In the figure, a filter 1, a filter water inlet pneumatic valve 2, a water outlet back pressure valve 3, a filter gas outlet solenoid valve 4, a water storage tank 5, a water storage tank liquid level control switch 6, a water storage tank water inlet pneumatic valve 7, a water pipe pneumatic valve 8, an air compressor 9, an air pipe solenoid valve 10, a differential pressure transmitter 11, a filter liquid level control switch 12, an acid tank 13, an acid liquor diaphragm pump 14, an alkali liquor tank 15, an alkali liquor diaphragm pump 16, a water pipe multistage centrifugal pump 17, a pressure reducing valve 18, a carbon steel air storage tank 19, an air inlet manual valve 20, a water outlet pneumatic valve 21, a water storage tank manual valve 22, an acid liquor pipeline manual valve 23, an alkali liquor pipe manual valve 24, a water pipe manual valve 25, an air pipe manual valve 26, a filter element 100, a water inlet 101, a water outlet 102, an air inlet 103, an air outlet 104, a filter element downstream 105 and a filter element upstream 106.
Detailed Description
As shown in fig. 1-2, an off-line backwashing device for a large-flow filter element 100 comprises a filter 1 capable of mounting the filter element 100 to be backwashed, a water pipeline assembly for water flushing, an air pipeline assembly for air flushing, a chemical feeding pipe assembly for soaking and an electric cabinet, wherein an air outlet 104 is arranged at the upper part of the filter 1, a water inlet 101, an air inlet 103 and a water outlet 102 are arranged at the lower part of the filter 1, the water inlet 101 is connected with the water pipeline assembly and the chemical feeding pipe assembly, the air inlet 103 is connected with the air pipeline assembly, a filter water inlet pneumatic valve 2 is arranged on the water inlet 101 of the filter 1, a water outlet back pressure valve 3 is arranged on the water outlet, and a filter air outlet electromagnetic valve 4 is arranged at the air outlet of the filter 1;
the water pipeline assembly comprises a water storage tank 5, a water storage tank liquid level control switch 6 arranged on the water storage tank 5, a water storage tank inlet pneumatic valve 7 arranged on a water inlet pipe of the water storage tank 5, and a water pipe pneumatic valve 8 arranged between the water storage tank 5 and the filter inlet pneumatic valve 2,
the air pipeline assembly comprises an air compressor 9 and an air pipe electromagnetic valve 10 arranged between the air compressor 9 and the filter 1;
the filter 1 is provided with a differential pressure transmitter 11 for detecting the differential pressure of the filter element 100; the filter 1 is provided with a filter liquid level control switch 12;
when the air pipe electromagnetic valve 10 is closed, the filter air outlet electromagnetic valve 4, the filter water inlet pneumatic valve 2, the filter water outlet back pressure valve 3 and the water pipe pneumatic valve 8 are opened for water backwashing; when the differential pressure transmitter 11 reaches the set upper limit, the filter air outlet electromagnetic valve 4 is closed, and the air pipe electromagnetic valve 10 is opened for air backwashing.
The electric cabinet is provided with a switch and controls the whole backwashing process. The water pipeline assembly provides water back flushing, the air pipeline assembly provides air back flushing, and the medicine adding pipe provides medicine liquid soaking. A water storage tank liquid level control switch 6 is arranged in the water pipeline assembly, and after the water level change is sensed, a water storage tank water inlet pneumatic valve 7 is opened or closed to finish water adding into the water storage tank 5. The water pipeline assembly is connected with the water inlet 101 and is flushed by controlling the water pipe pneumatic valve 8 and the filter water inlet pneumatic valve 2 on the water pipeline assembly.
The electric cabinet performs air backwashing by controlling the air pipe electromagnetic valve 10;
the filter 1 is provided with a differential pressure transmitter 11 for detecting the differential pressure of the filter element upstream 106 and the filter element downstream 105, and is specifically arranged on a water inlet 101 and a water outlet 102 of the filter 1, and the filter 1 is provided with a filter liquid level control switch 12 for controlling the dosing of the dosing pipe assembly and completing the dosing.
The chemical feeding pipe assembly enters the filter 1 through the filter water inlet pneumatic valve 2 and comprises an acid liquid pipeline and an alkali liquid pipeline which are connected in parallel. And an acid tank 13 and an acid pump 14 are arranged on the acid liquor pipeline. And an alkali tank 15 and an alkali diaphragm pump 16 are arranged on the alkali liquid pipeline. According to the fact that the sediment on the filter element 100 can be soaked by acid liquor or alkali liquor, the large-flow filter element 100 can enter the filter element 100 only by a certain pressure, and the liquid medicine is pumped into the filter 1 by a pump.
And a water pipe multistage centrifugal pump 17 is arranged on the water pipeline assembly. The pump provides pressure to pressurize the water into the cartridge 100.
And the gas pipeline assembly is provided with a pressure reducing valve 18 and a carbon steel gas storage tank 19. A pressure relief valve is provided for the gas line assembly in the appropriate pressure range.
An air inlet manual valve 20 is arranged at an air inlet 103 of the filter 1. The purpose of the intake manual valve 20 is to improve the safety of the device.
The filter 1 is plural. The plurality of filters 1 are connected in parallel, a water inlet 101 of each filter 1 is provided with a filter water inlet pneumatic valve 2, a water outlet of each filter 1 is provided with a water outlet pneumatic valve 21, and the flushed water of each filter element 100 is gathered to a water outlet back pressure valve 3 discharge device after passing through the water outlet pneumatic valve 21. The intake port 103 of each filter 1 is provided with an intake manual valve 20.
In order to improve the safety of the whole device, a water storage tank manual valve 22, an acid liquor pipeline manual valve 23, an alkali liquor pipe manual valve 24, a water pipe manual valve 25 and an air pipe manual valve 26 are arranged on the water pipeline as a whole.
The working principle is as follows: after water, electricity and gas are completely communicated, the gas pressure reducing valve 18 is adjusted to enable the pressure behind the pressure reducing valve 18 to reach 0.3MPa, the air inlet manual valve 20, the water storage tank manual valve 22, the water pipe manual valve 25, the acid liquor pipeline manual valve 23, the alkali liquor pipe manual valve 24 and the water outlet back pressure valve 3 are manually opened, the water outlet back pressure valve 3 is opened by a half, a display screen interface is opened, the water storage tank water inlet pneumatic valve 7 is opened, water is injected into the water storage tank at the moment, the water storage tank water inlet pneumatic valve 7 is automatically closed by the system after the water storage tank is filled with water, then the filter element 100 is clicked to backwash a switch, a backwash channel is automatically opened, a pump is started, and four steps can be sequentially carried out, wherein the sequence is 1, water backwash 2, liquid medicine immersion 3, gas backwash 4, and gas backwash are carried out simultaneously. When a tank of water is flushed, the backwashing valve is automatically closed, the value of the differential pressure transmitter 11 is observed at the moment, and the shutdown switch is closed until the value of the differential pressure reaches 0.05 MPa.
The off-line backwashing equipment is provided with two backwashing filters 1 which respectively backwash two large-flow filter elements 100, an RTM filter element (external inlet and internal outlet type) and an EHF filter element (internal inlet and external outlet type).
Taking an RTM filter element as an example, since the high flow filter element 100 is of an external inlet and an internal outlet type during normal use, most of solid particles are concentrated outside the filter element 100, and the backwashing mode is of an internal inlet and an external outlet type, so that the external particles are easier to wash down.
Adjusting a total water outlet back pressure valve 3 to a half-open state, after the backwashing work is started, backwashing inlet water enters a lower cavity of a filter 1 from a water inlet 101 and enters the filter element 100, because a sealing ring is arranged on a socket of the filter element 100 for sealing, and the top of the filter element 100 is also provided with a blocking cover, the inlet water of the filter 1 can only enter the downstream through the filter element 100 under the action of pressure, so that particles inside and outside the filter element 100 are washed off, when the downstream of the filter 1 is filled with water, a filter outlet electromagnetic valve 4 is closed, the value of a pressure difference transmitter 11 of the filter 1 is observed at the moment and is generally 0.15MPa, after the stable operation of washing, a gas pipe electromagnetic valve 10 is opened for gas backwashing, the particles inside and outside the filter element 100 are blown off through the breakage of countless bubbles or are directly blown off by gas, the gas backwashing and the water are matched with the backwashing effect to be better, and the filter element 100 is soaked by nitric acid solution, the flushing effect is better. Along with the continuous washing of the particles inside and outside the filter element 100, the particles flow from the water outlet 102 to the main sewage discharge pipeline along with the water flow and then flow to the user sedimentation tank through the sewage discharge pipeline, the back washing water is clean water all the time, and the discharged sewage cannot be reused, so that the possibility of secondary pollution is avoided, along with the gradual reduction of the particles of the filter element 100, the pressure difference between the upstream 106 and the downstream 105 of the filter element also gradually decreases, and when the pressure difference reaches 0.05MPa, the washing of a group of filter elements 100 is completed.
The flushing procedure and flushing principle of the EHF cartridge 100 are the same. The two drawbacks of the previous devices, the problem of the water flow not penetrating the filter cartridge 100 and the problem of the lack of judgment, are solved by the addition of the filter 1.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a large-traffic filter core off-line back flush device, treat filter (1) of backwash filter core (100) including the mountable, be used for the water pipeline assembly that water washed, be used for the gas pipeline assembly that the gas washed, be used for soaked dosing pipe assembly and electric cabinet, the upper portion of filter (1) is provided with gas vent (104), the lower part is provided with water inlet (101), air inlet (103), outlet (102), water inlet (101) and water pipeline assembly, dosing pipe assembly are connected, air inlet (103) link to each other with the gas pipeline assembly, its characterized in that: a water inlet pneumatic valve (2) of the filter is arranged on a water inlet (101) of the filter (1), a water outlet back pressure valve (3) is arranged on a water outlet, and a filter air outlet electromagnetic valve (4) is arranged on an air outlet (104) of the filter (1);
the water pipeline assembly comprises a water storage tank (5), a water storage tank liquid level control switch (6) arranged on the water storage tank (5), a water storage tank water inlet pneumatic valve (7) arranged on a water inlet pipe of the water storage tank (5), and a water pipe pneumatic valve (8) arranged between the water storage tank (5) and the filter water inlet pneumatic valve (2);
the air pipeline assembly comprises an air compressor (9) and an air pipe electromagnetic valve (10) arranged between the air compressor (9) and the filter (1);
the filter (1) is provided with a differential pressure transmitter (11) for detecting the differential pressure of the filter element (100); a filter liquid level control switch (12) is arranged on the filter (1);
when the air pipe electromagnetic valve (10) is closed, the filter air outlet electromagnetic valve (4), the filter water inlet pneumatic valve (2), the filter (1) water outlet back pressure valve (3) and the water pipe pneumatic valve (8) are opened for water backwashing; and opening the air pipe electromagnetic valve (10) for air backwashing, after washing for a period of time, closing the air pipe electromagnetic valve (10), and emptying the water solution in the filter (1) when the differential pressure transmitter (11) reaches a set value.
2. The offline back-washing device for the large-flow filter element according to claim 1, is characterized in that: the liquid medicine in the dosing pipe assembly enters the filter (1) through the filter water inlet pneumatic valve (2), and the dosing pipe assembly comprises an acid liquid pipeline and an alkali liquid pipeline which are connected in parallel.
3. The offline back-washing device for the large-flow filter element according to claim 2, is characterized in that: an acid tank (13) and an acid liquor diaphragm pump (14) are arranged on the acid liquor pipeline.
4. The offline back-washing device for the large-flow filter element according to claim 3, is characterized in that: and the alkali liquor pipeline is provided with an alkali tank (15) and an alkali liquor diaphragm pump (16).
5. The offline back-washing device for the large-flow filter element according to claim 4, is characterized in that: and a water pipe multistage centrifugal pump (17) is arranged on the water pipeline assembly.
6. The offline back-washing device for the large-flow filter element according to claim 5, is characterized in that: the gas pipeline assembly is provided with a pressure reducing valve (18) and a carbon steel gas storage tank (19).
7. The offline back-washing device for the large-flow filter element according to claim 6, is characterized in that: an air inlet manual valve (20) is arranged at an air inlet (103) of the filter (1).
8. The offline back-flushing device for the large-flow filter element according to any one of claims 1 to 7, is characterized in that: the filter (1) is provided in plurality.
9. The offline back-washing device for the large-flow filter element according to claim 8, is characterized in that: the filter is characterized in that the filters (1) are connected in parallel, a water inlet (101) of each filter (1) is provided with a filter water inlet pneumatic valve (2), a water outlet pneumatic valve (21) is arranged at a water outlet of each filter (1), and water after flushing of each filter element (100) is collected to a water outlet back pressure valve (3) discharging device after passing through the water outlet pneumatic valves (21).
10. The offline back-washing device for the large-flow filter element according to claim 9, is characterized in that: an air inlet (103) of each filter (1) is provided with an air inlet manual valve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123382329.3U CN216498019U (en) | 2021-12-29 | 2021-12-29 | Off-line back flushing device for large-flow filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123382329.3U CN216498019U (en) | 2021-12-29 | 2021-12-29 | Off-line back flushing device for large-flow filter element |
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| Publication Number | Publication Date |
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| CN216498019U true CN216498019U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123382329.3U Active CN216498019U (en) | 2021-12-29 | 2021-12-29 | Off-line back flushing device for large-flow filter element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364553A (en) * | 2022-07-29 | 2022-11-22 | 深圳市宝立嘉贵金属科技有限公司 | Filtering and collecting device |
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2021
- 2021-12-29 CN CN202123382329.3U patent/CN216498019U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364553A (en) * | 2022-07-29 | 2022-11-22 | 深圳市宝立嘉贵金属科技有限公司 | Filtering and collecting device |
| CN115364553B (en) * | 2022-07-29 | 2024-03-22 | 深圳市宝立嘉贵金属科技有限公司 | Filtering and collecting device |
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