CN207941266U - A kind of tubular precision filter - Google Patents

Abstract

The utility model is related to a kind of tubular precision filters, it sets there are one tank body, tank body is equipped with upper chamber and lower room, tubular precision filter filtering element is housed in upper chamber, the tubular precision filter filtering element is mounted on one piece of orifice plate, the hole of orifice plate connects with the outlet pipe of filtering element bottom one-to-one correspondence, whole filtering elements are divided into several groups, it is equipped with below the corresponding orifice plate of each filtering element group and the filtering element group corresponding backwash air distribution and water distribution room, it is equipped with a cross over pipe for being pierced by backwash air distribution and water distribution room in each backwash air distribution and water distribution room, there are one control valves for installation at the lower end nozzle of every cross over pipe.The utility model alternately carries out backwash by compressed air and water to the filtering element group filtering element on each backwash air distribution and water distribution room, and to achieve the purpose that thoroughly to be backwashed to all filtering elements of filter, and its control process is simple, easy to use.

Description

A kind of tubular precision filter

Technical field

The utility model is related to a kind of filter, more particularly to the pipe used in a kind of thermal power plant and nuclear power plant's condensed water Formula accurate filter.

Background technology

Currently, the shortcomings that tubular precision filter generally existing used in thermal power plant and nuclear power plant's condensed water is backwash It is not thorough, the reason is that filter area is too big.With certain power plant condensation crystal processing φ 2000mm tubular precision filters used For, total filtering element number is 326, and total filter area is 92m².Since filter area is too big, backwash is not thorough, long and The long filtering element dirt that will result in is blocked up, and it is excessive that filter runs pressure drop.Patent No. 200420026184.0, entitled novel pipe The tubular precision filter of the patent disclosure of accurate filter, be alternately backwashed by compressed air and water, but its It is complicated, inflate water-filling when it is inconvenient to use, it is time-consuming and laborious.

Invention content

Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide a kind of reasonable design, make With facilitating the tubular precision filter that can reach and thoroughly backwash.

Technical problem to be solved in the utility model realizes that the utility model is by technical solution below A kind of tubular precision filter, it sets there are one tank body, and tank body is equipped with upper chamber and lower room, and tubular precision filter is housed in upper chamber Filtering element, the tubular precision filter filtering element are mounted on one piece of orifice plate, the outlet pipe one in hole and filtering element bottom on orifice plate One correspondence connects, its main feature is that：Backwash exhaust outlet is equipped at the top of tank body upper chamber, room upper lateral part is equipped with backwash air inlet under tank body Mouthful, backwash water inlet, room bottom is equipped with filtering operation water inlet and filtering operation water outlet under tank body；The positive middle part in room under tank body Equipped with from tank body upper chamber vertically draw and the operation water inlet pipe by being pierced by from tank body Xia Shi bottom centre behind room under tank body；All Filtering element is divided into several groups, is equipped with corresponding backwash air distribution and water distribution room below the corresponding aperture plate portion of each filtering element group, each It is equipped with a cross over pipe for being pierced by backwash air distribution and water distribution room in backwash air distribution and water distribution room, pacifies at the lower end nozzle of every cross over pipe There are one control valves for dress.

Technical problem to be solved in the utility model can also be further realized by technical solution below, every Anti- scouring water gas consumption determines that the length of every cross over pipe is under normal circumstances when the length and internal diameter of cross over pipe are by practical application 0.5m-1.5m, a diameter of 50mm-250mm.

Technical problem to be solved in the utility model can also be further realized by technical solution below, in hole Be equipped with one piece and orifice plate lower plate disposed in parallel below plate, vertically arranged several partition boards be connected to lower plate and orifice plate it Between, the space between lower plate and orifice plate is divided into several chambers and constitutes the backwash air distribution and water distribution room by partition board.

Technical problem to be solved in the utility model can also be further realized by technical solution below, described Partition board the chamber between lower plate and orifice plate is divided into several level cross-sectionns is that fan-shaped, round or polygon backwash is matched Gas distributing water room.

Technical problem to be solved in the utility model can also be further realized by technical solution below, described Backwash air distribution and water distribution number of chambers amount and each backwash air distribution and water distribution room on filtering element radical determined by practical application, under normal circumstances The quantity of the backwash air distribution and water distribution room of setting is equipped at least two, and the filtering element group on each backwash air distribution and water distribution room is equipped at least 2 Filtering element.It is preferred that the backwash air distribution and water distribution room is equipped with 16, the filtering element group in each backwash air distribution and water distribution room is equipped with 22 filters Member.

Technical problem to be solved in the utility model can also be further realized by technical solution below, described Control valve be equipped with cylinder body up and down, cylinder body upper end is connect by flange with cross over pipe, and cylinder body lower end is equipped with lower cover, lower cover On be connected with snorkel, top its circumferential direction of casing wall upper edge of cylinder body is uniformly provided with several linked holes, cylinder body upper end and flange Between be equipped with the valve seat that internal diameter is equal to flange latus rectum and lower surface flat smooth, the work of top surface flat smooth is equipped in cylinder body Plug.

Technical problem to be solved in the utility model can also be further realized by technical solution below, described Control valve cylinder body top several linked holes total flow area be not less than corresponding cross over pipe flow area.

Technical problem to be solved in the utility model can also be further realized by technical solution below, described Section diameter of the upper piston area apart from its top 5mm long than its underpart piston diameter to when young 10mm, and than end valve on cylinder body The seat at least big 30mm of internal diameter, piston upper surface tightly coordinate with valve seat lower surface flat smooth.

Compared with prior art, whole filtering elements are divided into several groups by the utility model, and each filtering element group corresponds to a backwash Air distribution and water distribution room is equipped with a cross over pipe for being pierced by backwash air distribution and water distribution room in each backwash air distribution and water distribution room, in every unicom There are one control valves for installation at the lower end nozzle of pipe.Pass through the pass of the i.e. controllable control valve of the air inlet and exhaust of control valve snorkel Closing and opening opens, realize cross over pipe and the cut-out of room unicom under tank body with it is open-minded, replaced successively with compressed air and water to realize Backwash is carried out to the filtering element on each backwash air distribution and water distribution room, all filtering elements of filter are thoroughly backwashed to reach Purpose, and its control process is simple, it is easy to use.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the utility model；

Fig. 2 is the A-A of Fig. 1 to structural schematic diagram；

Fig. 3 is the structural schematic diagram of control valve；

Fig. 4 is the utility model filtering operation schematic diagram；

Fig. 5 is a certain group of filtering element backwash schematic diagram of the utility model filter.

Specific implementation mode

Referring to the drawings, the specific technical solution for further describing the utility model, in order to those skilled in the art Member is further understood that the utility model, without constituting the limitation to its right.

Referring to Fig.1-5, a kind of tubular precision filter, it sets there are one tank body 1, and tank body 1 is equipped with upper chamber 3 and lower room 7, on Tubular precision filter filtering element 4 is housed, the tubular precision filter filtering element 4 is mounted on one piece of orifice plate 16, orifice plate in room 3 Hole on 16 connects with the outlet pipe 5 of 4 bottom of filtering element one-to-one correspondence, disposed in parallel with orifice plate equipped with one piece below orifice plate 16 Lower plate 17, vertically arranged partition board 15 are connected between lower plate 17 and orifice plate 16, and partition board 15 is by lower plate 17 and orifice plate 16 Between space be divided into 16 chambers and constitute the backwash air distribution and water distribution rooms 14, the filtering element in each backwash air distribution and water distribution room 14 Group is equipped with 22 filtering elements 4, specifically filters number of tuples and the radical of each filtering element group filtering element is determined that each backwash is matched by actual conditions The horizontal section of gas distributing water room 14 is sector, and the horizontal section according to different needs each backwash air distribution and water distribution room 14 may be The structures such as square, rectangle, hexagon, circle.

It is equipped with backwash exhaust outlet 2 at 1 upper chamber of tank body, 3 top, 1 time room of tank body, 7 upper lateral part is equipped with backwash air inlet 6 and backwash Water inlet 13,1 time room of tank body, 7 bottom are equipped with filtering operation water inlet pipe 9 and filtering operation outlet pipe 8；Filtering operation water inlet pipe 9 from The positive middle part of 3 orifice plate 16 of upper chamber is drawn and is pierced by vertically from 1 bottom of tank body, and filtering runs outlet pipe 8 from the appropriate position in 7 bottom of lower room It sets and draws tank body 1.

Whole filtering elements 4 are divided into several groups, and the lower section of corresponding 16 part of orifice plate of each filtering element group is equipped with corresponding anti- Air distribution and water distribution room 14 is washed, a cross over pipe 12, the length one of every cross over pipe 12 are drawn from each backwash air distribution and water distribution room 14 is interior As be 0.5m-1.5m, diameter is generally 50mm-250mm, and there are one control valves for installation at the lower end nozzle of every cross over pipe 12 11.The control valve 11 is equipped with cylinder body 18 up and down, and 18 upper end of cylinder body is connect by flange with cross over pipe 12, cylinder body 18 Lower end is equipped with lower cover 19, is connected with snorkel 10 on lower cover 19, snorkel 10 from 1 lower part appropriate location of tank body stretch out outside tank body with Compressed air source is connected, and which is provided with air-intaking exhaust valve.Top its circumferential direction of casing wall upper edge of cylinder body 18 is uniformly provided with 6 A linked hole 22, total flow area of linked hole 22 are not less than the flow area of corresponding cross over pipe 12.18 upper end of cylinder body and method It is equipped with the valve seat 23 that internal diameter is equal to flange latus rectum and lower surface flat smooth between orchid, the smooth light of top surface is equipped in cylinder body 18 Sliding piston 20.Section diameter of 20 top of piston apart from its top 5mm long, to when young 10mm, and is wanted than its underpart piston diameter It is at least bigger 30mm than cylinder body upper valve seat internal diameter.

The filtering operation logic of the utility model is as follows：

If shown in Fig. 4 tubular precision filters filtering operation schematic diagram, when operation starts, control system is by institute There are the compressed air emptying in the snorkel 10 of control valve 11, the compressed air of 11 cylinder body of control valve, 18 inner carrier, 20 lower section to be arranged Only.

Operation water inlet is entered by operation water inlet 9,1 upper chamber of tank body, 3 space is flowed into, by tubular precision filter filtering element 4 After filtering, enter backwash air distribution and water distribution room 14 from 4 core pipe lower part outlet pipe 5 of tubular precision filter filtering element, then pass through cross over pipe 12 enter 11 inner carrier of control valve, 20 top, and piston 20 is pushed away valve seat 23 and opens control valve 11, is passed through on cylinder body 18 later Linked hole 22 flow into 7 space of tank body 1 time room, finally from the operation outflow of water outlet 8.

The backwash principle of the utility model is as follows：

When the filtering of filtering element 4 dirt reaches a certain amount of during tubular precision filter is run, filter inlet outlet pressure differential is super When going out setting value, needs to carry out backwash to filter, the retention dirt in filtering element 4 is cleaned and is removed.

When backwash, operation sequence is ventilated to all 14 corresponding control valves 11 of backwash air distribution and water distribution room in control system Pipe 10 is passed through compressed air, and the piston 20 in all control valves 11 is pushed into valve seat 23 by compressed air, and valve seat 23 is below and piston 20 tight contacts above, all control valves 11 are closed, at this moment the small part of 20 upper end diameter of piston and 22 unicom of linked hole.

By the way that the water in 1 upper chamber 3 of tank body is discharged to 4 top position of filtering element with the drainpipe of filtering operation 9 unicom of water inlet pipe, Backwash intake valve is opened later and is passed through compressed air from backwash air inlet 6 to 1 time room of tank body 7, opens backwash inlet valve from backwash Water inlet pipe 13 is intake to 1 time room of tank body 7.

The snorkel 10 of the control valve 11 on wherein some backwash air distribution and water distribution room 14 is emptied by control system, tank Water in 1 time room of body 7 enters the segment space 21 that 18 upper end diameter of piston reduces from the linked hole 22 on control valve 11, into sky Between pressure water action in 21 on 18 major diameter part upper surface of piston, piston 18 is pushed down on make on piston 18 sealing surface from Sealing surface of seat is opened, the water in 1 time room of tank body 7 enters backwash air distribution and water distribution room by linked hole 22, valve seat 23, cross over pipe 12 14, later even into each filtering element of the group, short time washing is carried out to this group of filtering element, waits for that water level reduces in 1 time room of tank body 7 When at linked hole 22, compressed air, which enters along the path of above-mentioned backwash water in each filtering element of the group, compresses this group of filtering element Air bump rinse operation；When this group of filtering element compressed air clean the time reach as defined in the time when, in control system operation sequence to this 11 snorkel 10 of control valve of group filtering element is into compressed air（Note：This road air source compressed air pressure is higher than backwash compressed air Pressure）, this group of control valve 11 is closed, water and compressed air backwash are carried out to next group of filtering element again later, and so on, to institute There is filtering element group filtering element to carry out water and compressed air backwash.

Claims (8)

1. a kind of tubular precision filter, it sets there are one tank body, and tank body is equipped with upper chamber and lower room, and it is accurate that tubular type is housed in upper chamber Filter filtering element, the tubular precision filter filtering element are mounted on one piece of orifice plate, and the hole on orifice plate goes out with filtering element bottom Water pipe one-to-one correspondence connects, it is characterised in that：Backwash exhaust outlet is equipped at the top of tank body upper chamber, room upper lateral part is equipped with instead under tank body Air inlet, backwash water inlet are washed, room bottom is equipped with filtering operation water inlet and filtering operation water outlet under tank body；The room under tank body Just middle part is equipped with from extraction and the water inlet of the operation by being pierced by from tank body Xia Shi bottom centre behind room under tank body vertically of tank body upper chamber Pipe；Whole filtering elements are divided into several groups, and corresponding backwash air distribution and water distribution is equipped with below the corresponding aperture plate portion of each filtering element group Room is equipped with a cross over pipe for being pierced by backwash air distribution and water distribution room in each backwash air distribution and water distribution room, in the lower end of every cross over pipe There are one control valves for installation at nozzle.

2. tubular precision filter according to claim 1, it is characterised in that：The length of every cross over pipe is 0.5m- 1.5m, a diameter of 50mm-250mm.

3. tubular precision filter according to claim 1, it is characterised in that：One piece is equipped with below orifice plate to put down with orifice plate The lower plate of row setting, vertically arranged several partition boards are connected between lower plate and orifice plate, partition board by lower plate and orifice plate it Between space be divided into several chambers and constitute the backwash air distribution and water distribution room.

4. tubular precision filter according to claim 3, it is characterised in that：The partition board by lower plate and orifice plate it Between to be divided into several level cross-sectionns be fan-shaped, round or polygon backwash air distribution and water distribution room in space.

5. tubular precision filter according to claim 4, it is characterised in that：The backwash air distribution and water distribution room is equipped with extremely 2 few, the filtering element group on each backwash air distribution and water distribution room is equipped at least 2 filtering elements.

6. tubular precision filter according to claim 1, it is characterised in that：The control valve is equipped with up and down Cylinder body, cylinder body upper end are connect by flange with cross over pipe, and cylinder body lower end is equipped with lower cover, and snorkel is connected on lower lid, cylinder body Top its circumferential direction of casing wall upper edge is uniformly provided with several linked holes, and it is logical equal to flange that internal diameter is equipped between cylinder body upper end and flange The valve seat of diameter and lower surface flat smooth, the interior piston for being equipped with top surface flat smooth of cylinder body.

7. tubular precision filter according to claim 6, it is characterised in that：The control valve cylinder body top it is several Total flow area of linked hole is not less than the flow area of corresponding cross over pipe.

8. according to the tubular precision filter described in claim 6, it is characterised in that：The upper piston area is apart from its top 5mm long Section diameter than its underpart piston diameter to when young 10mm, and it is at least bigger 30mm than cylinder body upper valve seat internal diameter.