CN212188091U

CN212188091U - Self-cleaning tube array type filter

Info

Publication number: CN212188091U
Application number: CN202020028806.2U
Authority: CN
Inventors: 王勇
Original assignee: Individual
Current assignee: Shanghai Ji'an Automation Equipment Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-12-22
Anticipated expiration: 2030-01-08

Abstract

The utility model belongs to the technical field of filter, specifically disclose a self-cleaning shell and tube filter, it filters monomer siphuncle upper end and is provided with the monomer entry, the monomer entry passes through the monomer feed valve and is connected with the inlet header pipe intercommunication, it is provided with the monomer export to filter monomer pipe lower part, the monomer export passes through the valve body and is connected with the outlet header pipe intercommunication, it is provided with the back flush export to filter monomer pipe bottom, the back flush export is connected with recoil blowdown header pipe intercommunication through the back flush valve, be provided with control system in the electric cabinet, control system and monomer feed valve and back flush valve control connection, its applicable precision range is 25 ~ 500 microns, the filtration of suitable water and low viscosity liquid, still be applicable to simultaneously and filter microfiber, fatlute, soft caking class.

Description

Self-cleaning tube array type filter

Technical Field

The utility model belongs to the technical field of filter, a self-cleaning shell and tube filter is related to.

Background

At present, when the tubular self-cleaning filter is installed and used improperly, the filter can be damaged, the filter is strictly prohibited to be opened before an inlet and an outlet of the filter are not closed and a drain valve is not emptied, and most of the tubular self-cleaning filters in the prior art are not suitable for filtering water and low-viscosity liquid and are not suitable for filtering impurities such as micro-fiber, greasy dirt and soft agglomerates.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a self-cleaning shell and tube filter to solve the filtration of the unsuitable water that prior art exists and low viscosity liquid, be not applicable to the problem of filtering microfiber, fatlute, soft knot class impurity simultaneously.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a self-cleaning shell and tube filter, includes entry house steward, export house steward, recoil blowdown house steward, fore-and-aft filtration monomer pipe and electric cabinet, filters and installs the filter core in the monomer pipe, filters monomer pipe upper end and is provided with the monomer entry, the monomer entry passes through monomer feed valve and is connected with entry house steward intercommunication, filters monomer pipe lower part and is provided with the monomer export, the monomer export passes through the valve body and is connected with export house steward intercommunication, filters monomer pipe bottom and is provided with the back flush export, the back flush export passes through the back flush valve and is connected with recoil blowdown house steward intercommunication, be provided with control system in the electric cabinet, control system and monomer feed valve and back.

The utility model discloses a tubular filter is listed as to self-cleaning, its control theory of operation does: liquid flows in from an inlet header pipe and enters an inlet of a filtering monomer pipe, the liquid penetrates through the outer surface of a filter element from outside to inside and flows to outlets of the filtering monomer pipes, the liquid is converged to an outlet header pipe and then flows out, particle impurities are intercepted on the outer surface of the filter element and accumulated to form a filter cake, when the filtering pressure difference gradually rises to reach a preset value (usually 0.6 kilogram) or a cleaning time period is up, a control system starts a back flushing action, closes a feeding valve of one filtering monomer pipe, opens a back flushing valve, namely a blow-down valve, then closes the back flushing valve and opens the monomer feeding valve, and continues filtering; the control system executes the same backwashing action on the next filtering unit pipe until all the filtering unit pipes are backwashed one by one, the whole backwashing process is finished, and when one filtering unit pipe is backwashed, other filtering unit pipes still filter normally.

The utility model discloses a tubular filter is listed as to self-cleaning, can also be preferred, install the filter screen in the filter core.

It may also be preferred that the number of filtering unit tubes is at least two.

It may also be preferred that the filter cell tubes are mounted on a support.

It may also be preferred that the inlet manifold, the outlet manifold and the backflush sewer manifold are mounted on a support.

Preferably, the electric cabinet is provided with a panel connected with the control system.

It is also preferable that the upper part of the filtering monomer pipe is provided with an exhaust port, and the exhaust port is provided with an exhaust valve.

It is also preferable that the upper end of the filtering unit pipe is connected with a top cover.

It is also preferable that the top cover is connected with a ring bolt.

The utility model discloses a tubular filter is listed as to self-cleaning can solve the filtration of the unsuitable water that prior art exists and low viscosity liquid, is not applicable to the problem of filtering microfiber, fatlute, soft caking class impurity simultaneously, and its application accuracy scope is 25 ~ 500 microns, and suitable water and the filtration of low viscosity liquid still are applicable to simultaneously and filter microfiber, fatlute, soft caking class impurity.

Drawings

Fig. 1 is a schematic diagram of a filtering state structure of an embodiment of a self-cleaning shell and tube filter of the present invention.

FIG. 2 is a schematic diagram of the backwash state of the self-cleaning shell and tube filter of the embodiment of FIG. 1.

Figure 3 is a front view of another embodiment of a self cleaning tube array filter of the present invention.

FIG. 4 is a top view of the self cleaning shell and tube filter of the embodiment of FIG. 3.

FIG. 5 is a side view of the embodiment of FIG. 3 showing a self cleaning shell and tube filter.

Figure 6 is a schematic of a panel of yet another embodiment of a self cleaning tube array filter according to the present invention.

Figure 7 is a schematic illustration of a panel of yet another embodiment of a self cleaning shell and tube filter of the present invention.

FIG. 8 is a schematic view of the knob structure of the vent valve of the self cleaning shell and tube filter of the embodiment of FIG. 7.

In the figure: 1 is an inlet main pipe, 2 is an outlet main pipe, 3 is a backflushing blowdown main pipe, 4 is a filtering monomer pipe, 5 is a monomer feed valve, 6 is a valve body, 7 is a backflushing valve, 8 is a panel, and 9 is an annular bolt; 801 is a power indicator, 802 is a pressure difference alarm lamp, 803 is an alarm silencing button, 804 is an inlet valve opening indicator, 805 is an inlet valve manual and automatic knob, 806 is a blowoff valve opening indicator, and 807 is a blowoff valve manual and automatic knob.

Wherein the arrows in the figure indicate the direction of the water flow.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example 1

A self-cleaning tube type filter is shown in figure 1 and comprises an inlet main pipe 1, an outlet main pipe 2, a backflushing blowdown main pipe 3, a longitudinal filtering unit pipe 4 and an electric cabinet, wherein a filter element is installed in the filtering unit pipe 4, a unit inlet is formed in the upper end of the filtering unit pipe 4, the unit inlet is communicated and connected with the inlet main pipe 1 through a unit feeding valve 5, a unit outlet is formed in the lower portion of the filtering unit pipe 4 and communicated and connected with the outlet main pipe 2 through a valve body 6, a backflushing outlet is formed in the bottom end of the filtering unit pipe 4 and communicated and connected with the backflushing blowdown main pipe 3 through a backflushing valve 7, a control system is arranged in the electric cabinet and is in control connection with the unit feeding valve 5 and the backflushing valve 7.

The self-cleaning shell and tube filter of the embodiment has the control working principle that: referring to fig. 1 and 2, liquid flows in from an inlet header pipe 1 and enters an inlet of a filtering unit pipe 4, the liquid penetrates through the outer surface of a filter element from outside to inside, flows to outlets of the filtering unit pipes 4, converges to an outlet header pipe 2 and then flows out, particle impurities are intercepted on the outer surface of the filter element and accumulate to form a filter cake, when the filtering pressure difference gradually rises to reach a preset value (usually 0.6 kg) or reaches a cleaning time period, a control system starts a back flushing action, closes a unit feeding valve 5 of the filtering unit pipe 4, opens a back flushing valve 7, namely a blow-off valve, then closes the back flushing valve 7 and opens the unit feeding valve 5, and continues filtering; the control system executes the same back flushing action on the next filtering unit pipe 4 until all the filtering unit pipes 4 are back flushed one by one, and the whole back flushing process is finished. When one filtering unit pipe 4 is backflushed, other filtering unit pipes 4 still filter normally. As shown in fig. 1, in the filtering state, the monomer feed valve 5 and the valve body 6 are opened, and the back flush valve 7 is closed; as shown in fig. 2, in the backwashing state, the valve body 6 and the backwash valve 7 are opened, and the monomer feed valve 5 is closed.

Example 2

A self-cleaning shell and tube filter similar to that of example 1 except that a screen is installed in the filter element.

Still further, the number of the filtering unit tubes 4 is at least two. FIG. 3 is a front view of the self-cleaning shell and tube filter of this embodiment. FIG. 4 is a top view of the self-cleaning shell and tube filter of this embodiment. FIG. 5 is a side view of the self-cleaning candle filter of this embodiment.

Further, the filtering unit tube 4 may be mounted on a bracket.

Further, the inlet manifold 1, the outlet manifold 2 and the backflushing blowdown manifold 3 may be mounted on a rack.

Example 3

A self-cleaning shell and tube filter similar to example 2, with reference to figure 6, except that the electrical cabinet is provided with a panel 8 which is connected to the control system.

The panel 8 may be provided with a power indicator 801, a pressure difference alarm lamp 802, an alarm silencing button 803, an inlet valve opening indicator 804, an inlet valve manual and automatic knob 805, a waste valve opening indicator 806, and a waste valve manual and automatic knob 807. Referring to fig. 7, the number of the inlet valve open indicator lamp 804, the inlet valve manual and automatic knob 805, the blowoff valve open indicator lamp 806, and the blowoff valve manual and automatic knob 807 may be at least two, respectively, and each of the inlet valve open indicator lamp 804, the inlet valve manual and automatic knob 805, the blowoff valve open indicator lamp 806, and the blowoff valve manual and automatic knob 807 is matched to one filter unit tube 4, respectively.

Example 4

A self-cleaning shell and tube filter is similar to that of example 3 except that a gas discharge port is provided at the upper part of the filtering unit tube 4, and a gas discharge valve is installed at the gas discharge port.

Still further, the upper end of the filtering unit pipe 4 is connected with a top cover.

Still further, referring to fig. 8, the top cover is connected with a ring bolt 9. The annular bolt 9 comprises a ring body, at least two uniformly distributed screw holes are formed in the side wall of the ring body, the central axis of the ring body is perpendicular to the central axis of the screw holes, and bolts are arranged in the screw holes respectively. The screw holes shown in fig. 8 are four.

The self-cleaning shell and tube filter of the embodiment is preferably provided with manual butterfly valves in front of and behind the inlet main pipe 1 and the outlet main pipe 2 during installation and connection, and then a bypass is arranged according to the situation of a field; it is preferable to leave a space for attaching and detaching the filter screen in the operations, maintenance, and attachment and detachment of the parts. The length of the back-flushing sewage-discharging main pipe 3 is as short as possible under the condition of meeting the requirement so as to reduce the resistance as much as possible and ensure the smooth sewage discharge. The diameter of an air pipe which is communicated and connected with the filtering monomer pipe 4 can be 8mm, and the air pipe can be inserted into an inlet of the pneumatic two-link. The applicable viscosity is less than 50cps, the content of the used substances is less than 300ppm, the lowest inlet pressure is more than 0.3MPa, the filter can be arranged behind a water pump, the preset pressure is 0.6MPa, the filter precision is 100 mu m, the backwashing pressure difference is 0.6-1.0 bar, the pressure difference alarm mode is that when the filter unit pipes 4 are backwashed one by one, the pressure difference is set, the pressure difference starts to alarm and carries out the next backwashing period, and field personnel are required to check and remove faults when the pressure difference alarms. The filter element may be a wedge-shaped mesh. Each liquid flow valve may be a three-piece butt welded pneumatic ball valve. The pollution discharge control mode can be pressure difference and time, and the pressure difference has priority. The differential pressure transmitter of the control system is a pressure transmitter, the temperature of the using environment is-20 ℃ to-60 ℃, the relative humidity of the using environment is not more than 80% (25 ℃), and the working environment is a non-inflammable and explosive place. The pressure difference alarm is that the pressure difference reaches a set value and continues to alarm until a set time (such as 80 seconds). The pressure difference silencing key is used for eliminating the alarm sound by pressing when the pressure difference alarms.

The self-cleaning shell and tube filter of the embodiment has the automatic cleaning mode that all the monomer feed valves 5, the valve bodies 6 and the back flush valves 7 are rotated to the automatic positions; the manual cleaning mode is that the monomer feeding valve 5 is closed (manually closed), then the back washing valve 7 is opened (manually opened) to start cleaning (for example, 10 seconds), the back washing valve 7 is closed (automatically) after cleaning is finished, then the monomer feeding valve 5 is opened (automatically), manual cleaning of the filtering monomer tubes 4 is finished, filtering is continued, and the rest filtering monomer tubes 4 are cleaned in sequence according to the method until all the filtering monomer tubes 4 are cleaned.

The cleaning suggestion of the pipeline before the water is fed into the equipment is to dismantle all the filter elements of the filtering monomer pipe 4, or close the valve body 6 and open the back flush valve 7 to directly drain the water for cleaning the pipeline, thereby avoiding the damage of the filter elements caused by the impurities in the pipeline. Firstly, confirming that the inlets and outlets and the sewage discharge ports of all the filtering unit pipes 4 are closed, and opening an exhaust valve; the upper end of the filtering unit pipe 4 can be connected with a top cover, after the top cover is opened, whether a filtering element is put in or not is checked, if not, the filtering element is assembled and put in the filter in sequence, and the filtering element can be a wedge-shaped filtering element, a stainless steel wire net filtering element and a sintered filtering element. After the filter element is properly placed, the top cover is covered, and the nut is screwed down. The top cover can be provided with a sealing ring, and whether the sealing ring is damaged or not and whether the fitting is correct or not and the cleaning state are checked before the top cover is put down. And after the sealing ring is damaged, the sealing ring is replaced in time. The ring bolt 9 cannot be overloaded, the tightening sequence should be taken care of when the ring bolt 9 is tightened, the tightening torque should be performed according to a symmetrical and crossed sequence, the tightening torque is not allowed to exceed the torque limit value, for example, the torque limit value of the filtering unit pipe 4 is 184Nm, and the ring bolt is gradually tightened to the torque limit value according to the following steps: the first step is to rotate to 50% of the moment limit value, the second step is to rotate to 80% of the moment limit value, and the third step is to rotate to 100% of the moment limit value. The filter was then put into service: the inlet valves of all the filter monomers are sequentially opened, the exhaust valve is in an open state at the moment so as to conveniently exhaust air in the filter, at the moment, the hand valve at the outlet of the main pipe of the filter is closed firstly, then the hand valve at the inlet of the main pipe is rotated to a half-open state, when the water in the filter tank body is completely filled, the hand valve at the outlet of the main pipe is rotated to the half-open state, and when the pressure is restored to a working state, the manual butterfly valve at the inlet and the outlet of the main pipe of the filter is fully opened, so that the filter element is prevented from being; and (4) closing all the exhaust valves in sequence once liquid flows out of the exhaust valves, then opening all the outlet valves in sequence, and opening all the inlet valves fully to enter a full filtering stage. When filtering dangerous liquid, the operator should pay attention to safety and prevent from being stained by the liquid, and the exhaust valve should be connected with the elbow for drainage. If the air remaining in the filter is not completely discharged, there is a possibility that the filtering effect is affected, and thus, the air should be periodically discharged.

All parts of the filter must be periodically inspected for corrosion damage and other damage. The filter element is replaced or cleaned according to the requirements of the filter element such as the blockage condition, the replacement of the filtered material, the process pressure drop and the like. Judging whether the filter element is blocked or not through the pressure drop of the inlet and the outlet of the filter: usually, the maximum destruction pressure difference of the stainless steel wedge-shaped filter element is 2-3 kilograms (bar), the filter element is generally cleaned when the pressure drop reaches 0.6 bar (bar), and when the automatic backwashing frequency is high and the outlet flow rate is obviously reduced, the filter element is cleaned or replaced in time, so that the influence on the water yield of the filter caused by serious blockage of the filter element is avoided. When the filter element is replaced or cleaned, if the filter element is replaced, the liquid inlet and the liquid outlet of one of the filtering unit pipes 4 are closed in sequence, the back flush valve 7 and the exhaust valve which are used as the drain valves are opened in sequence, attention is paid to the operation sequence, and accidents are avoided, particularly under the condition of high pressure; after the residual liquid is discharged, the top cover is opened, the filter element is taken out and is disassembled, a new or regenerated filter element is assembled, then the filter element is arranged in the filtering unit pipe 4, and the top cover is covered; close the blowoff valve in proper order, revolve to half open mode with the inlet, in case discharge valve has liquid outflow to close discharge valve at once, open the liquid outlet simultaneously, open the inlet at last completely, so far, this filters monomer pipe 4 and has accomplished the change work of filter core to continue to put into use. When the filter element is cleaned manually, the liquid inlet and the liquid outlet of one filter monomer are closed in sequence, the drain valve and the exhaust valve are opened in sequence, the operation sequence is noticed, and accidents are avoided, particularly under the condition of high pressure; after the residual liquid is discharged, opening the top cover, taking out the filter element, brushing the outer surface (namely a filtering surface) of the filter element by using a brush, washing the outer surface by using 2-3 kilograms of clean water from the inside of the filter element after the filter element is cleaned, washing impurities attached to the filter element completely, then loading the regenerated filter element into the filtering unit tube 4, and closing the top cover; and closing the drain valves in sequence, screwing the liquid inlet to a half-open state, closing the exhaust valve once liquid flows out of the exhaust valve, opening the liquid outlet at the same time, and finally fully opening the liquid inlet. At this point, the filter unit tube 4 completes the cleaning of the filter element and continues to be put into use.

The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.

Claims

1. A self-cleaning tube array filter comprises an inlet main pipe (1), an outlet main pipe (2), a backflushing blowdown main pipe (3), a longitudinal filtering monomer pipe (4) and an electric cabinet, and is characterized in that,

a filter element is arranged in the filtering monomer pipe (4), a monomer inlet is arranged at the upper end of the filtering monomer pipe (4), and the monomer inlet is communicated and connected with the inlet header pipe (1) through a monomer feed valve (5);

a monomer outlet is formed in the lower part of the filtering monomer pipe (4), and the monomer outlet is communicated with the outlet header pipe (2) through a valve body (6);

a back washing outlet is arranged at the bottom end of the filtering single pipe (4);

the back-flushing outlet is communicated and connected with the back-flushing sewage drainage main pipe (3) through a back-flushing valve (7);

and a control system is arranged in the electric cabinet and is in control connection with the monomer feed valve (5) and the backwashing valve (7).

2. The self-cleaning shell and tube filter of claim 1, wherein a screen is mounted within the filter element.

3. A self-cleaning shell and tube filter according to claim 1, wherein the number of filter unit tubes (4) is at least two.

4. A self-cleaning shell and tube filter according to claim 3, wherein the filter unit tube (4) is mounted on a support.

5. A self-cleaning shell and tube filter according to claim 4, wherein the inlet manifold (1), the outlet manifold (2) and the backflush sewer manifold (3) are mounted on a support.

6. A self-cleaning shell and tube filter according to claim 1, wherein the electrical cabinet is provided with a panel (8) connected to a control system.

7. A self-cleaning shell and tube filter according to claim 1, wherein the top of the filtering unit tube (4) is provided with an exhaust port, and an exhaust valve is installed at the exhaust port.

8. A self-cleaning tube still filter according to claim 1, wherein a top cover is attached to the upper end of the filtering unit tube (4).

9. A self-cleaning shell and tube filter according to claim 8, wherein a ring bolt (9) is attached to the top cover.