CN219701268U - Be applied to candle filter's filter core subassembly - Google Patents

Abstract

A filter element assembly for a candle filter, comprising a filter tube and a filter cloth bag; the outer wall of the filter tube is provided with a plurality of fixing surfaces and a plurality of expansion surfaces; when the outer surface of the filter tube receives an external force towards the center direction of the filter tube, the expansion surface is recessed towards the center direction of the filter tube to form a filter groove; when the outer surface of the filter tube is subjected to external force in the direction away from the center of the filter tube, the expansion surface bulges towards the center of the filter tube and forms a cylindrical surface with the fixing surface; the expansion surface is provided with a plurality of filtering holes which are uniformly arranged at intervals along the vertical direction; the filtering hole is communicated with the pipe cavity of the filtering pipe; the filter cloth bag is wrapped outside the filter tube through the fixing structure. When the filter element assembly is backwashed, the expansion surface protrudes outwards to give an outward thrust to the filter cake layer attached to the surface of the filter tube, so that the filter cake layer can more easily fall off from the surface of the filter tube.

Description

Be applied to candle filter's filter core subassembly

Technical Field

The utility model relates to the technical field of filtration, in particular to a filter element assembly applied to a candle filter.

Background

The candle type filter is a novel advanced, safe, high-efficiency and pollution-free filtering mode, has the characteristics of high efficiency, energy conservation, high sealing performance, simple and convenient maintenance, safety, reliability, higher automation degree and the like, and can be widely applied to solid-liquid separation and filtration in industries such as petroleum, plastics, electroplating, chemical industry, ceramics, pharmacy, sugar manufacturing and the like. One or more filter elements are arranged in the cylinder of the candle filter, a special filter cloth bag selected according to the characteristics of the filtered liquid is sleeved on the filter elements, when the liquid passes through the filter cloth bag, solid matters in the liquid are gradually accumulated on the surface of the filter cloth bag, and when the solid matters reach a certain thickness, a so-called filter cake layer is formed.

The filter cake formed on the surface of the filter element can reduce the filtering flux of the filter element and seriously affect the filtering effect of the filter element. Therefore, regular backwashing of the filter element is required during actual production. The existing backwashing technology is to fill backwashing liquid into the cavity of the filter tube and then discharge the backwashing liquid out of the tube, so that a filter cake layer outside the filter tube is washed away, and the filter can be used for filtration. However, the existing filter tubes are all cylindrical, and when the filter cake is removed by backwashing, the filter cake can only be backwashed by means of backwashing liquid, so that the backwashing process is long in time consumption and low in flushing efficiency.

Disclosure of Invention

Aiming at the problems of the background technology, the utility model aims to provide a filter element component applied to a candle filter, which solves the problems of long backwashing time and low efficiency in the prior art.

To achieve the purpose, the utility model adopts the following technical scheme:

a filter element assembly for a candle filter, comprising a filter tube and a filter cloth bag; the outer wall of the filter tube is provided with a plurality of fixing surfaces and a plurality of expansion surfaces, and the fixing surfaces and the expansion surfaces are uniformly arranged at intervals along the central line of the filter tube; when the outer surface of the filter tube receives an external force towards the center direction of the filter tube, the expansion surface is recessed towards the center direction of the filter tube to form a filter groove; when the outer surface of the filter tube is subjected to external force in the direction away from the center of the filter tube, the expansion surface protrudes towards the center of the filter tube and forms a cylindrical surface with the fixing surface; the expansion surface is provided with a plurality of filtering holes, and the filtering holes are uniformly arranged at intervals along the vertical direction; the filtering holes are communicated with the pipe cavity of the filtering pipe; the filter cloth bag is wrapped outside the filter tube through a fixing structure.

Specifically, the side surface of the filter groove connected with the fixing surface is an inclined surface, and the range of the inclined angle B of the inclined surface is-degree.

Specifically, the fixing structure comprises a cloth clamping ring and a fixing piece; the top of the filter tube is provided with a fixing part; an opening is formed in the top of the filter cloth bag; the bottom of the filter tube passes through the opening of the filter cloth bag and is sleeved in the filter cloth bag; the cloth clamping ring is sleeved on the fixing part, so that the top of the filter cloth bag is clamped between the outer part of the fixing part and the inner ring of the cloth clamping ring; the fixing piece is used for fixing the cloth clamping ring on the fixing portion.

More preferably, the fixing part includes a supporting part and a connecting part; the support part covers the top of the filter tube, the connecting part is arranged on the top of the support part, and the lumen of the connecting part is communicated with the lumen of the filter tube; the cloth clamping ring is sleeved on the connecting part, so that the filter cloth bag is clamped between the inner ring of the cloth clamping ring and the outer part of the connecting part; the fixing piece is sleeved on the connecting portion, so that the cloth clamping ring is fixed on the top surface of the supporting portion.

Preferably, an external thread part is arranged outside the connecting part, and the fixing piece is a nut; the fixing piece is fixedly connected to the connecting portion through threaded connection, so that the cloth clamping ring is fixed to the top surface of the supporting portion.

Specifically, an internal thread part is arranged in the bottom pipe orifice of the filter pipe; and the filter tube is connected with the internal thread part through a connecting piece, so that the filter tube is arranged and installed in the inner cavity of the concentration tank.

Preferably, the filter tube is made of a plastic material.

Compared with the prior art, one of the technical schemes has the following beneficial effects:

when the filter element assembly is backwashed, the expansion surface protrudes outwards to give an outward thrust to the filter cake layer attached to the surface of the filter tube, so that the filter cake layer can more easily fall off from the surface of the filter tube.

Drawings

FIG. 1 is an exploded view of a filter cartridge assembly according to one embodiment of the present utility model;

FIG. 2 is a schematic view of a filter groove according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of the broken line A of FIG. 1;

fig. 4 is an exploded view of a filter tube and connector according to one embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature.

In a preferred embodiment of the present utility model, as shown in fig. 1 to 4, a cartridge assembly for a candle filter comprises a filter tube 1 and a filter cloth bag 2; the outer wall of the filter tube 1 is provided with a plurality of fixing surfaces 11 and a plurality of expansion surfaces, and the fixing surfaces 11 and the expansion surfaces are uniformly arranged at intervals along the central line of the filter tube 1; when the outer surface of the filter tube 1 receives an external force towards the central direction of the filter tube 1, the expansion surface is recessed towards the central direction of the filter tube 1 to form a filter groove 12; when the outer surface of the filter tube 1 is subjected to an external force in a direction away from the center of the filter tube 1, the expansion surface protrudes towards the center of the filter tube 1 and forms a cylindrical surface with the fixing surface 11; the expansion surface is provided with a plurality of filtering holes 13, and the filtering holes 13 are uniformly arranged at intervals along the vertical direction; the filtering holes 13 are communicated with the pipe cavity of the filtering pipe 1; the filter cloth bag 2 is wrapped outside the filter tube 1 through a fixing structure 3.

In this embodiment, the filter tube 1 is installed in the filter cloth bag 2 such that the filter tube 1 is in a concentration tank, solid matters are blocked on the outer side surface of the filter tube 1 by the filter cloth bag 2, so that a filter cake layer is formed, and liquid permeates through the filter cloth bag 2, then enters the pipe cavity of the filter tube 1 through the filter holes 13, and then is discharged out of the concentration tank, so that the filtration is completed. Further, since a cake layer is formed around the filter tube 1, the cake layer presses the filter tube 1 such that the expansion surface is depressed toward the center line direction of the filter tube 1, a filter groove 12 is formed such that the outer surface of the filter tube 1 forms an uneven surface, and the filter cloth bag 2 is also depressed following the expansion surface. Therefore, the filter tube 1 of the present utility model can increase the filtering area of the filter tube 1 by the filtering grooves 12, compared to the cylindrical filter tube 1, thereby increasing the filtering capacity of the filter element. Further, during the backwashing, backwash gas is supplied to the lumen of the filter tube 1 by an external blowing device. After the lumen of the filter tube 1 is filled with backwash gas, the air pressure of the lumen of the filter tube 1 is larger than the extrusion force of the filter cake layer on the filter tube 1, so that the air pressure can bulge the concave expansion surface out of the central line of the filter tube 1, the expansion surface and the fixing surface 11 form a cylindrical surface, and when the expansion surface bulges outwards, the filter cake layer attached to the surface of the filter tube 1 can be easily dropped. Therefore, during backwashing, the filter element assembly can give an outward thrust to the filter cake layer attached to the surface of the filter tube 1 through the outward bulge of the expansion surface, so that the filter cake layer can more easily fall off from the surface of the filter tube 1.

Specifically, the side surface of the filtering groove 12 connected with the fixing surface 11 is an inclined surface 121, and the inclination angle B of the inclined surface 121 ranges from 30 degrees to 60 degrees. Since the action area of the gas with respect to the inclined surface 121 is small when the inclination angle B of the inclined surface 121 is less than 30 degrees, it takes a long time for the gas to protrude the inclined surface 121 outward during backwashing, so that it takes a long time for the filter cake layer attached to the surface of the filter tube 1 to escape outward, and thus backwashing efficiency is low. When the inclination angle B of the inclined surface 121 is greater than 60 degrees, the distance between the bottom surface of the filtering groove 12 and the fixing surface 11 is too small, so that the overall volume of the filtering groove 12 is small, and thus the filtering space is small and the filtering efficiency is low. In the present utility model, the inclination angle B of the inclined surface 121 is preferably 45 degrees, and the filtering groove 12 formed when the inclination angle B of the inclined surface is 45 degrees has a large filtering volume and a large contact area between the inclined surface 121 and the gas, so that the filtering efficiency of the filter tube 1 and the backwashing efficiency of the filter tube 1 can be ensured.

Specifically, the fixing structure 3 includes a cloth clamping ring 31 and a fixing member 32; the top of the filter tube 1 is provided with a fixing part 14; an opening is formed in the top of the filter cloth bag 2; the bottom of the filter tube 1 passes through the opening of the filter cloth bag and is sleeved in the filter cloth bag 2; the cloth clamping ring 31 is sleeved on the fixing part 14, so that the top of the filter cloth bag 2 is clamped between the outer part of the fixing part 14 and the inner ring of the cloth clamping ring 31; the fixing member 32 is used for fixing the cloth clamping ring 31 to the fixing portion 14.

As shown in fig. 1, after the filter tube 1 is installed into the filter cloth bag 2, in order to fix the filter cloth bag 2 so that the filter cloth bag 2 does not fall off, in this embodiment, after the filter tube 1 is installed into the filter cloth bag 2, a cloth clamping ring 31 is sleeved on the fixing portion 14 and the outside of the filter cloth bag 2 so that the top of the filter cloth bag 2 is clamped between the fixing portion 14 and the cloth clamping ring 31, thereby fixing the filter cloth bag 2 on the outside of the filter tube 1, and preventing the filter cloth bag 2 from falling off during filtration. Further, in order to avoid loosening of the cloth clamping ring 31 during filtering, the filter cloth bag 2 is prevented from falling off, the fixing piece 32 is used to fix the cloth clamping ring 31 on the fixing portion 14 firmly, so that loosening of the cloth clamping ring 31 is avoided, and accordingly falling off of the filter cloth bag 2 is avoided. Therefore, the filter cloth bag 2 is squeezed and clamped outside the filter tube 1 through the cloth clamping ring 31, and then the cloth clamping ring 31 is further fixed through the fixing piece 32, so that the cloth clamping ring 31 can firmly clamp the filter cloth bag 2, the fixing of the filter cloth bag 2 is convenient and quick, the fixing and mounting efficiency of the filter cloth bag 2 is improved, and the filter cloth bag 2 can be prevented from falling off under the fixation of the fixing piece 32.

More preferably, the fixing part 14 includes a supporting part 141 and a connecting part 142; the supporting part 141 covers the top of the filter tube 1, the connecting part 142 is arranged on the top of the supporting part 141, and the lumen of the connecting part 142 is communicated with the lumen of the filter tube 1; the cloth clamping ring 31 is sleeved on the connecting part 142, so that the filter cloth bag 2 is clamped between the inner ring of the cloth clamping ring 31 and the outer part of the connecting part 142; the fixing member 32 is sleeved on the connecting portion 142, so that the cloth clamping ring 31 is fixed on the top surface of the supporting portion 141.

As shown in fig. 3, after the filter tube 1 is sleeved on the filter cloth bag 2, the cloth clamping ring 31 is sleeved on the connecting part 142, and the filter cloth bag 2 is extruded on the supporting part 141 in the vertical direction; in the horizontal direction, the cloth clamping ring 31 presses the filter cloth bag 2 to the connecting portion 142 through the inner wall thereof, so that the filter cloth bag 2 is fixedly sleeved outside the filter tube 1. After the cloth clamping ring 31 is fixed to the filter cloth bag 2, the connecting portion 142 is sleeved with the fixing piece 32, so that the cloth clamping ring 31 is fixedly extruded on the supporting portion 141, loosening of the cloth clamping ring 31 is avoided, and loosening and falling of the filter cloth bag 2 are avoided.

In practical production applications, the fixing member 32 and the connecting portion 142 are fixedly connected in a wide variety of structures, but in the present embodiment, the following manner is preferably adopted: the outer part of the connecting part 142 is provided with an external thread part, and the fixing piece 32 is a nut; the fixing member 32 is fixedly connected to the connecting portion 142 by a threaded connection, so that the cloth clamping ring 31 is fixed to the top surface of the supporting portion 141.

In this embodiment, the nut is fixedly connected to the connecting portion 142 through a threaded connection, so as to fix the cloth clamping ring 31 on the supporting portion 141, thereby preventing the filter cloth bag 2 from falling off. The arrangement can enable the installation and the disassembly of the filter cloth bag 2 to be convenient and quick, and the installation efficiency of the filter cloth bag 2 is improved.

Specifically, an internal thread part is arranged in the bottom pipe orifice of the filter pipe 1; and the filter tube 1 is connected with the internal thread part through a connecting piece 4, so that the filter tube 1 is arranged and installed in the inner cavity of the concentration tank. As shown in fig. 4, a plurality of filter elements are arranged in the concentration tank, in order to facilitate the filter elements to be conveniently installed in the concentration tank, the filter element frame of the concentration tank is penetrated by the connecting piece 4 and fixedly connected with the bottom of the filter tube 1, so that the filter elements are conveniently and rapidly installed in the concentration tank, the installation time of the filter elements is reduced, and the installation efficiency is improved. It should be noted that the filter tube 1 is first sleeved on the filter cloth bag 2, and after the filter cloth bag 2 is fixed, the filter element is mounted on the filter element frame of the concentration tank through the connecting piece 4 such as the bolt. The installation is convenient, the bottom of the filter tube 1 is sealed through the connecting piece 4, and gas is prevented from leaking from the bottom of the filter tube 1 during back flushing, so that the back flushing effect of the filter element is further ensured.

Preferably, the filter tube 1 is made of a plastic material. Because the plastic has better flexibility, the expansion surface can easily realize the concave or convex during the filtration or the backwashing, thereby better realizing the functions of the filter tube 1.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (7)

1. A filter element assembly for a candle filter, comprising a filter tube and a filter cloth bag;

the outer wall of the filter tube is provided with a plurality of fixing surfaces and a plurality of expansion surfaces, and the fixing surfaces and the expansion surfaces are uniformly arranged at intervals along the central line of the filter tube;

when the outer surface of the filter tube receives an external force towards the center direction of the filter tube, the expansion surface is recessed towards the center direction of the filter tube to form a filter groove;

when the outer surface of the filter tube is subjected to external force in the direction away from the center of the filter tube, the expansion surface protrudes towards the center of the filter tube and forms a cylindrical surface with the fixing surface;

the expansion surface is provided with a plurality of filtering holes, and the filtering holes are uniformly arranged at intervals along the vertical direction;

the filtering holes are communicated with the pipe cavity of the filtering pipe;

the filter cloth bag is wrapped outside the filter tube through a fixing structure.

2. The cartridge assembly for a candle filter according to claim 1, wherein the side of the filter groove connected to the fixing surface is an inclined surface, and the inclined surface has an inclination angle B ranging from 30 to 60 degrees.

3. A cartridge assembly for use with a candle filter according to claim 1, wherein the securing structure comprises a cloth clip and a securing member;

the top of the filter tube is provided with a fixing part;

an opening is formed in the top of the filter cloth bag;

the bottom of the filter tube passes through the opening of the filter cloth bag and is sleeved in the filter cloth bag;

the cloth clamping ring is sleeved on the fixing part, so that the top of the filter cloth bag is clamped between the outer part of the fixing part and the inner ring of the cloth clamping ring;

the fixing piece is used for fixing the cloth clamping ring on the fixing portion.

4. A cartridge assembly for use with a candle filter according to claim 3, wherein the securing portion comprises a support portion and a connecting portion;

the support part covers the top of the filter tube, the connecting part is arranged on the top of the support part, and the lumen of the connecting part is communicated with the lumen of the filter tube;

the cloth clamping ring is sleeved on the connecting part, so that the filter cloth bag is clamped between the inner ring of the cloth clamping ring and the outer part of the connecting part;

the fixing piece is sleeved on the connecting portion, so that the cloth clamping ring is fixed on the top surface of the supporting portion.

5. The filter cartridge assembly for a candle filter according to claim 4, wherein the connecting portion has an externally threaded portion, and the fixing member is a nut;

the fixing piece is fixedly connected to the connecting portion through threaded connection, so that the cloth clamping ring is fixed to the top surface of the supporting portion.

6. A cartridge assembly for a candle filter according to claim 1, wherein the bottom nozzle of the filter tube has an internal thread;

and the filter tube is connected with the internal thread part through a connecting piece, so that the filter tube is arranged and installed in the inner cavity of the concentration tank.

7. A cartridge assembly for use in a candle filter according to claim 1, wherein the filter tube is made of a plastic material.