CN202237514U

CN202237514U - Wellhead backwashing on-line filter

Info

Publication number: CN202237514U
Application number: CN2011203437178U
Authority: CN
Inventors: 罗成
Original assignee: SHANGHAI HUQING INSTRUMENT CO Ltd
Current assignee: SHANGHAI HUQING INSTRUMENT CO Ltd
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-30
Anticipated expiration: 2021-09-14

Abstract

A wellhead backwashing on-line filter belongs to the technical field of filters, and is characterized in that the upper end of a filter element is connected with a lead screw seat; the lower end of the filter element is connected with a central hole of a filter element seat flange in a casing; the upper end of a lead screw is fixedly connected with a handwheel; the lower end of the lead screw is connected with a sealing slide block in the filter element through a lead screw positioning plate, an upper cover of the casing and the central hole of the lead screw seat in sequence; the lead screw and the sealing slide block in the filter element move up and down synchronically with the rotation of the handwheel; the lower part in a filter element cavity is fixedly connected with a positioning plate; the central hole of the positioning plate is matched with the sealing slide block in shape and size, and is also matched with a T-shaped round table gradually reduced from the upper part to the lower part. The wellhead backwashing on-line filter has the positive effects of simple structure, obvious blowdown effect, and convenience in operation. All that is needed is to rotate the handwheel to drive the lead screw and the sealing slide block to descend to isolate water entering from an inlet and enable purified water to flow back, the whole backwashing process can be completed in an on-line manner, without stopping a pump, the production is not influenced, the labor intensity is reduced, and the working efficiency is improved.

Description

Well head backwash pot strainer

Technical field

The utility model relates to a kind ofly can onlinely filter the filter of removing contamination, and relates in particular to a kind of well head backwash pot strainer that the water injection well device filters that is used for, and belongs to the filter technology field.

Background technology

In the water that need are filtered, contain under the more situation of larger particles and fibrous impurity, conventional filter is prone to cause screen pack to stop up, and makes the filter can't operate as normal.This moment, necessary termination of pumping breaks in production was taken filter integral body apart, and very inconvenience is cleaned in blowdown, not only wastes time and energy, and delays production, and often replacing of filter core, and consequent consumables cost and day-to-day operation maintenance cost are high.

Summary of the invention

The technical problem that the utility model will solve provides and a kind ofly can onlinely filter, blowdown, well head backwash pot strainer simple in structure, that the day-to-day operation maintenance cost is low.

For achieving the above object; The technical scheme that adopts is: well head backwash pot strainer; Comprise handwheel, housing, place the filter core and the dirt storage room of said enclosure interior; And the blowoff valve of said housing below, it is characterized in that: the upper end of said filter core joins with screw rodb base, the lower end is connected with the centre bore of housing inner filter core seat; The upper end of screw mandrel is fixedly connected with said handwheel, and the lower end through the centre bore of screw mandrel locating piece, case top lid, screw rodb base, be connected with sealing slide block in the filter core, and said screw mandrel moves up and down along with the rotation of handwheel with the sealing slide block synchronously successively; The madial wall of said filter core bottom is fixedly connected with the interior location-plate of filter core, and the shape of the centre bore of said location-plate, size and said sealing slide block are complementary, and being from up to down, the T shape round platform of convergent cooperates.

Said loam cake is connected by the sealed tube screw thread with upper flange.

Said screw mandrel is threaded with screw rodb base T type.

Said filter cartridge seat and the welding of water inlet pipe spigot-and-socket are fixing.

Said filter cartridge seat is fixedly connected with said filter core screw thread.

Said screw rodb base is connected with said loam cake bolt.

The good effect of the utility model is: simple in structure, filth-discharging effect is remarkable, operation is very convenient, filter core long service life and reusable.Backwash is cleaned whole process and all can onlinely be accomplished, and only needs to rotate handwheel, and the sealing slide block that drives screw mandrel and screw mandrel bottom descends; When the inner location-plate of sealing slide block and filter core was combined closely, it is poor that the filter core inner chamber and the outside produce back-pressure, and the water adverse current of accomplishing purification can be accomplished; Need not termination of pumping; Do not influence production, reduced labour intensity, improved operating efficiency.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment, the utility model is described further.

Fig. 1: the structural representation of the utility model;

Fig. 2: the partial enlarged drawing of I among Fig. 1;

Fig. 3: the shape and the syndeton generalized section of location-plate in filter core and the filter core.

Among the figure, 1-handwheel; 2-locating piece; 3-loam cake; 4-upper flange; 5-import; 6-water inlet pipe; 7-sealing slide block; 8-location-plate; 9-dirt storage room; 10-blowoff valve; 11-filter cartridge seat; 12-filter core; 13-outlet; 14-housing; 15-screw rodb base; 16-screw mandrel.

The specific embodiment

Fig. 1 is the structural representation of the utility model; Diagram is visible; Well head backwash pot strainer; Comprise handwheel 1, housing 14, place said housing 14 inner filter core 12 and dirt storage room 9, and the blowoff valve 10 of said housing 14 belows, it is characterized in that: the upper end of said filter core 12 joins with screw rodb base 15, the lower end is connected with the centre bore of housing 14 inner filter core seats 11; The upper end of screw mandrel 16 is fixedly connected with said handwheel 1; The lower end is passed through the centre bore of screw mandrel locating piece 2, case top lid 3, screw rodb base 15 successively; Be connected with sealing slide block 7 in the filter core, and said screw mandrel 16 moves up and down along with the rotation of handwheel 1 with sealing slide block 7 synchronously; Visible from Fig. 2 and Fig. 3, the madial wall of said filter core 12 bottoms is fixedly connected with the interior location-plate 8 of filter core, and the shape of the centre bore of said location-plate 8, size and said sealing slide block 7 are complementary, and being from up to down, the T shape round platform of convergent cooperates.

Said loam cake 3 is connected by the sealed tube screw thread with housing upper flange 4.Said screw mandrel 16 is threaded by the T type with screw rodb base 15, so that big torsion to be provided,

Water inlet pipe 6 is fixing with the welding of filter cartridge seat 11 spigot-and-sockets.Filter cartridge seat 11 is fixedly connected with said filter core 15 screw threads.

During use, come water to get into by import 5 under pressure, through water inlet pipe 6, filter cartridge seat flange 11 through hole water channels; Get into the cavity of resorption of housing 14, the back gets into the inner chamber of filter core 12, through side direction filter core 12 outside diafiltrations in filter core 12; Impurity such as greasy dirt, suspension, tiny silt are all held back by the filter opening venturi of filter core 12 or are adsorbed; Be hampered by in filter core 12 chambeies, flow out through exporting 13, so far accomplished for the filtration that comes water through purifying waste water after filter core 12 diafiltrations.

Hold back or impurity such as the greasy dirt that adsorbs, suspension, tiny silt constantly increase when the filter opening venturi of filter core 12, progressively pile up, and then the filter opening venturi is when being stopped up by impurity at filter core 12 inboard pore constriction edges; Then the pressure reduction at filter import and export two ends can increase gradually, and filtering traffic is more and more littler, and pressure reduction reaches 0.3MPa when front and back; Need rotate counterclockwise handwheel 1 this moment drives screw mandrel 16 and seals slide block 7 downward; Sealing slide block 7 and filter core 12 inner location-plates 8 are combined closely, isolate the water that comes from import 5 entering, it is poor to make filter core 12 inner chambers and the outside produce back-pressure; Make the adverse current of purifying waste water of accomplishing purification; By the inner chamber of filter core 12 outer side inflow filter cores 12, wash away blocked filter core pore constriction, thereby accomplish the cleaning process of filter core 12 automatically.One time counter-flushing process was controlled at 1-2 minute; After accomplishing cleaning; Clockwise rotate handwheel 1 and drive screw mandrel 16 and 7 risings of sealing slide block, sealing slide block 7 is separated with filter core 12 inner location-plates 8, restart coming the filtering process of water; Simultaneously cleaning process washes away impurity such as the greasy dirt that gets off, suspension, tiny silt under pressure from the filter core pore constriction, and progressively the centre bore through location-plate 8 flows in the dirt storage room 9.Like the need blowdown, open pin type blowoff valve 10, can online completion blowdown.

The well head backwash pot strainer of the utility model, can be installed in the water filling well pump before, be applicable to contaminant removals such as the greasy dirt that injects water, suspension, tiny silt; Can online completion filter; Automatically clean filter core, blowdown, effect is remarkable; It is very convenient to operate, and can greatly alleviate working strength of workers.

Claims

1. well head backwash pot strainer; Comprise handwheel, housing, place the filter core and the dirt storage room of said enclosure interior; And the blowoff valve of said housing below, it is characterized in that: the upper end of said filter core joins with screw rodb base, the lower end is connected with the centre bore of housing inner filter core seat; The upper end of screw mandrel is fixedly connected with said handwheel, and the lower end through the centre bore of screw mandrel locating piece, case top lid, screw rodb base, be connected with sealing slide block in the filter core, and said screw mandrel moves up and down along with the rotation of handwheel with the sealing slide block synchronously successively; The madial wall of said filter core bottom is fixedly connected with the interior location-plate of filter core, and the shape of the centre bore of said location-plate, size and said sealing slide block are complementary, and being from up to down, the T shape round platform of convergent cooperates.

2. well head backwash pot strainer according to claim 1 is characterized in that: said case top lid is connected by the sealed tube screw thread with upper flange.

3. well head backwash pot strainer according to claim 1 is characterized in that: said screw mandrel is threaded with screw rodb base T type.

4. well head backwash pot strainer according to claim 1 is characterized in that: said filter cartridge seat and the welding of water inlet pipe spigot-and-socket are fixing.

5. well head backwash pot strainer according to claim 1 is characterized in that: said filter cartridge seat is threaded fixing with said filter core.