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CN-121971895-A - Multi-medium filter for preparing purified water

CN121971895ACN 121971895 ACN121971895 ACN 121971895ACN-121971895-A

Abstract

The invention relates to the technical field of purified water preparation, in particular to a multi-medium filter for purified water preparation, which comprises an integrated piece, a center piece, a screen, a first chamber, a second chamber and a control unit. According to the invention, the integrated piece and the central piece are used as integrated components in the water distribution process and the back flushing process, the integrated piece moves up and down in a reciprocating manner at a set position below, collected sewage, impurities and filter materials enter a concave area of the integrated piece, the filter materials are screened out and discharged, the impurities and the sewage are isolated through a single action, the problem that the back flushing effect is influenced by the sewage impurities in the integrated piece is avoided, the integrated piece is used as a water distribution implementation component at a set position above, the water is uniformly distributed into the filter layer through the water distribution holes, the problem that the original filtering performance of the filter is influenced due to the position or layout change of the filter layer caused by a single-pipe water distribution mode is avoided, and the water distribution operation and the back flushing drainage operation are realized through the integrated piece.

Inventors

  • LIU XIMEI
  • LIU LI

Assignees

  • 长春铭泰流体技术有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (9)

  1. 1. A multi-media filter for purified water preparation, comprising: The filter is internally provided with an integrated device and a water and gas distribution assembly in sequence from top to bottom, and a main pipe communicated with the inside is arranged below the filter; The integrated device comprises an integrated part, the integrated part is arranged in the filter in a vertically sliding way, the integrated part is of a bowl-shaped structure with a big top and a small bottom, a central part coaxial with the integrated part is fixedly arranged in the integrated part, and a screen fixedly arranged on the integrated part is sleeved on the central part; the integrated piece is provided with a first chamber and a second chamber, the first chamber is used for sewage circulation in backwashing, and the second chamber is used for forward flushing and water distribution operation; The filter is provided with a water inlet pipe and a water outlet pipe, the lower side circumferential surface of the integrated piece is provided with a plurality of water distribution holes, the integrated piece is in butt joint with the water inlet pipe when moving up to the highest height, the integrated piece performs water distribution and positive flushing operation, and the integrated piece moves up and down in a reciprocating manner in the set height to perform back flushing collection operation when moving down to the lowest height; the integrated piece and the screen are jointly penetrated and provided with two blanking cylinders which are symmetrically distributed left and right and used for enabling the filter material on the upper side to fall back after backwashing, and the central piece is provided with a control unit for controlling the upper end of the blanking cylinder to be closed.
  2. 2. The multi-medium filter for preparing purified water according to claim 1, wherein the first chamber comprises an annular cavity, the upper end surface of the inner cylinder of the integrated part is provided with the annular cavity, the lower end surface of the integrated part is fixedly provided with a sleeve, the lower end surface of the integrated part is provided with a circular connecting cavity communicated with the sleeve, the inner wall of the annular cavity is provided with two sector cavities which are distributed symmetrically left and right, and the sector cavities are communicated with the connecting cavity; the center piece is rotatably sleeved with a rotating ring, and lifting rods with vertical axes are fixedly arranged on the front side and the rear side of the rotating ring and penetrate through the upper end of the filter.
  3. 3. The multi-medium filter for preparing purified water according to claim 2, wherein the water outlet pipe is L-shaped, the axis of the vertical section of the water outlet pipe is collinear with the axis of the sleeve and is in butt joint with the axis of the sleeve, and the horizontal section of the water outlet pipe is a hose.
  4. 4. The multi-medium filter for preparing purified water according to claim 1, wherein the control unit comprises two cover plates which are hinged on the screen and are in one-to-one correspondence with the blanking cylinders, the hinge points of the cover plates and the screen are far away from the central piece, and the control unit controls the cover plates to seal the openings at the upper ends of the blanking cylinders when back flushing is carried out.
  5. 5. The multi-medium filter for preparing purified water according to claim 4 wherein the left and right end surfaces of the first and second parts of the blanking cylinder are respectively fixedly provided with isosceles triangle guide blocks, and the guide blocks incline from the positions of front and rear sides, which are close to the center of the blanking cylinder, to the positions, which are far away from the blanking cylinder.
  6. 6. The multi-medium filter for preparing purified water according to claim 1, wherein the upper end of the central member is provided with a butt joint groove with a big upper part and a small lower part, and the diameter of the upper side of the butt joint groove is the same as that of the water inlet pipe; The two chambers comprise water distribution chambers, the integrated part is provided with a water distribution chamber consisting of an inclined annular chamber and a disc chamber, the integrated part is provided with two communication grooves which are distributed front and back, the central part is provided with two curved grooves which are distributed front and back and are communicated with the butt joint grooves, and the communication grooves are communicated with the curved grooves and the water distribution chambers.
  7. 7. The multi-media filter for preparing purified water according to claim 6, wherein the water distribution holes are uniformly distributed in the circumferential direction and are formed in the circumferential surface and the bottom plane of the lower side of the integrated piece, and the water distribution holes are communicated with the second chamber.
  8. 8. The multi-medium filter for preparing purified water according to claim 2, wherein a fixed block is fixedly arranged on the rotating ring, and a telescopic sleeve rod with a vertical axis is arranged between the fixed block and the upper end of the filter in a rotation mode; the telescopic section of the telescopic sleeve rod is fixedly sleeved with an external tooth I, and the upper end of the central piece is fixedly sleeved with an external tooth II meshed with the external tooth I.
  9. 9. The multi-medium filter for preparing purified water according to claim 4, wherein the control unit further comprises a containing cavity, two containing cavities which are distributed symmetrically left and right are arranged on the central piece, gears with axes extending back and forth are rotationally arranged in the containing cavities, and two toothed plates which are distributed left and right and meshed with the gears are rotationally arranged in the containing cavities; the toothed plate close to the cover plate is fixedly provided with a connecting frame through a connecting block penetrating through the central piece, and the end face of the connecting frame facing the cover plate is hinged with the upper end face of the cover plate through a spring rod; connecting rods which are in one-to-one correspondence with the gears and vertical to the axes are arranged on the central piece in a penetrating manner, the connecting rods are connected with toothed plates far away from the corresponding covering plates, the upper end surfaces of the connecting rods are fixedly provided with laminating blocks, and reset springs are arranged between the laminating blocks and the central piece; The water inlet pipe is sleeved with an extrusion ring used for extruding the lamination block, and in the process of upward movement of the integrated piece, the extrusion ring extrudes the lamination block so that the connecting rod moves downward relative to the integrated piece.

Description

Multi-medium filter for preparing purified water Technical Field The invention relates to the technical field of purified water preparation, in particular to a multi-medium filter for purified water preparation. Background The core process of purified water preparation is a step process of pretreatment, core desalination, advanced fine treatment and storage and transportation, so that various impurities in water are gradually removed to obtain a final purified water product, and meanwhile, the water quality is maintained stable in the whole flow, and secondary pollution is avoided. The pretreatment operation step mainly aims at removing suspended matters, colloid, organic matters, trapped particles and other impurities in raw water, equipment such as a multi-medium filter, an activated carbon filter, a softener and the like are mainly adopted to remove corresponding impurities in the pretreatment process at present, in addition, the multi-medium filter is mainly used for removing solid impurities (hereinafter collectively called impurities) such as suspended matters, colloid and the like, the raw water is introduced into a container through the conventional multi-medium filter, anthracite, quartz sand and prefabricated quartz sand are paved in the container from top to bottom in sequence, and the impurities in the raw water are gradually removed in the process of gradually distributing water from top to bottom. It should be noted that, in the normal water distribution process of the multi-medium filter, a water distributor is arranged above the inner mountain of the container and is matched with the top water delivery pipe through the water distributor, the current water distributor mainly has a water distribution mode of single-pipe water delivery multi-pipe water delivery, then after long-term use, the multi-medium filter needs to be washed, so as to maintain the filtering performance of the device, the washing mode comprises normal washing and back washing, wherein the normal water distribution operation flow is adopted for the normal washing from top to bottom, the back washing adopts the upward washing from the bottom of the container, so that impurities in the multi-medium filter material are washed out to the upper part of the filter layer, and the impurities are discharged out of the container through a set pipeline above. The problems that in the process of backwashing and discharging impurities, the flow speed of a local area in a container is high and the flow speed of an area far away from a discharge point is low in a single-tube discharging mode easily caused in the flushing process of the conventional multi-medium filter are solved, so that part of impurities are difficult to discharge out of the container and flow back into a filter layer, the integral filtering and cleaning effect is affected, and in the forward flushing (normal water distribution operation), the filtering performance is affected due to the change of the filter layer caused by water flow impact in the single-tube water distribution mode are easily caused. At present, although the cross section of the container can be covered by adopting a horn mouth type (main pipe branch pipe type) operation mode, partial upper medium filter materials (mainly anthracite) are easy to stay on the operation components or the filter materials are discharged out of the container in the impurity discharging process, so that the problems of blockage or reduced filtering performance of the filter layers are caused, and more maintenance time and maintenance cost are needed later. 2. In order to perform water distribution operation in normal flushing and normal filtering and drainage operation in back flushing, corresponding components in corresponding processes need to be arranged at the top of the container, the number of the components needs to occupy more container space, more cost is needed, and the operation mode is more complex. Disclosure of Invention Based on this, it is necessary to provide a multi-media filter for purified water preparation, aiming at solving the problems of the prior art. The application provides a multi-medium filter for preparing purified water, which comprises a filter, wherein an integrated device and a water and gas distribution assembly are sequentially arranged in the filter from top to bottom, and a main pipe communicated with the inside is arranged below the filter. The integrated device comprises an integrated part, the integrated part is arranged in the filter in a sliding manner up and down, the integrated part is of a bowl-shaped structure with a big top and a small bottom, a central part coaxial with the integrated part is fixedly arranged in the integrated part, and a screen fixedly arranged on the integrated part is sleeved on the central part. The integrated piece is provided with a first chamber and a second chamber, the first chamber is used for sewage circulation in back flushing, and the second chamb