CN210150932U

CN210150932U - Filter sieve for filtering

Info

Publication number: CN210150932U
Application number: CN201920833467.2U
Authority: CN
Inventors: 刘斌
Original assignee: Shenyang Renhe Mechanical & Electrical Engineering Equipment Co Ltd
Current assignee: Shenyang Renhe Mechanical & Electrical Engineering Equipment Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-03-17
Anticipated expiration: 2029-06-04

Abstract

A filter screen for filtering, especially for filtering the object under high pressure. Because the filtered object can be filtered by applying higher pressure, the filtering speed can be increased. The utility model discloses a mutual butt that the outer cylinder of a plurality of columniform poles extended rod axis direction constitutes a plurality of apertures that extend rod axis direction, and the aperture of these apertures is even. The length of the rod is increased, the friction force between the rods is increased, the rods are not easy to be staggered, and the limitation of the mesh cloth filtering in the aspect of pressure filtering is better. For thicker rods, a plurality of annular grooves may be formed in the outer cylindrical surface thereof, which grooves, when the holes formed are partially blocked, allow the drained liquid to pass to the hole where it is not blocked. The utility model discloses simple manufacture realizes easily. The material used is not limited to a metallic material.

Description

Filter sieve for filtering

Technical Field

The utility model belongs to the technical field of filtration equipment, especially, relate to a filter sieve of filtration usefulness.

Background

Filtration is often used in daily life and in factory production. For example, when making bean curd at home and in processing factory, the bean curd coagulated into block is wrapped by filter cloth, and some water is extruded under proper pressure to make into block bean curd convenient for use. The filter cloth plays the role of a filter screen. In the aspect of environmental protection, the treatment of sludge is one of the means of squeezing out the moisture in the sludge through a filter screen. The sludge generated by mine ore washing needs to be squeezed out by adopting a filtering mode. The problem is that a certain pressure is required to squeeze out the water content in the sludge and the sludge generated by washing the ore. The pressure is high, the strength of the filter screen cannot bear, and the water content in the sludge is high due to low pressure. The effect on sludge treatment is not ideal. The filter screen formed by sintering the metal powder can bear the filtration of higher pressure. However, due to the irregular formed voids, the formed pores will lose their filtering function after being blocked.

Patent No. 201720638775.0 discloses a filter screen plate, which is made by extruding or cutting a high-strength plate through a die to form a plurality of grooves. The plates are then stacked to form a thicker plate, and the grooves, when aligned in the plane of the plates, define a plurality of apertures. The plates are used to form a filter plate to allow moisture in the sludge to pass through the pores to remove the dried sludge. The advantage of this filter screen plate is that its strength can be made very high, and in practical application, it can use different materials or method for forming thickness of said filter plate to meet the requirements of high-pressure filtration. It is relatively easy to implement from an implementation point of view.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a filter sieve for filtration, it is closely arranged for cylindrical pole each other with many cross sections, and the clearance that forms constitutes many through-holes realizes being similar to the network structure that usually weaves into the net by the silk thread, realizes filterable purpose. A plurality of rods are enclosed by a sleeve-like housing and are closely arranged within the bore of the housing. Because the rods are clamped, friction force exists between the rods, and the rods can bear certain pressure of the filtered objects to the filter. The longer the length of the rod and the greater the coefficient of mutual friction of the surfaces of the rod, the greater the pressure it is subjected to as a screen constituting a net structure. Thus, compared with the woven cloth type filter screen, the cloth type filter screen has the advantage that the filtered object can bear larger pressure during filtering. The increase of the filtering pressure can also increase the filtering speed and reduce the water content in the filtered substance. Compared with the filter sieve plate with the patent number 201720638775.0, the filter holes formed by the abutting of the outer cylindrical surfaces of a plurality of cylindrical rods have basically consistent section of the hole diameter, which is beneficial to back washing when the filter is blocked too much, so that the filter sieve plate can be reused. As materials with different materials of cylindrical rod structures, the material is widely supplied in the market, is easy to buy and has low price. Compared with the filtering holes formed by processing grooves by plate materials, the filtering holes are low in cost.

From the implementation perspective, the utility model discloses realize very easily, simple structure makes easily. It is not difficult to process rods of different diameters, called wires, smaller diameters, called fibers, from different materials according to the current manufacturing level. The size of the holes formed by mutually abutting cylindrical surfaces with the same diameter is very consistent. Compared with the filter sieve which is formed by sintering metal powder, the utility model is not limited to the metal material.

Fig. 4 and 5 show two forms of the swing of the rod, respectively, but from the stable point of view, the arrangement of fig. 4 is relatively stable. The reason for this is that the rods of fig. 4 are symmetrical pressure from 6 directions, while fig. 5 is symmetrical pressure from 4 directions.

From the perspective of the evenly divided void portion, the voids of the rod in fig. 4 having an evenly divided cross section constitute a regular hexagon, the cross section of the rod occupying 90.75% of the area of the regular hexagon; the voids of the uniform cross-section of the rods in fig. 5 form a square with the cross-section of the rods occupying 78.5% of the area of the square. The space formed by the arrangement of the rods in fig. 4 is smaller for rods of the same cross-section. Rods of circular cross-section are easily automated to form the rod presentation shown in figure 4 when squeezed.

Technical scheme

A filter screen for filtration, comprising: a housing and a lever. The method is characterized in that:

the shell is of a sleeve structure, the sleeve structure of the shell is provided with an inlet and an outlet, and the cross section of the rod is circular. The rods are arranged in the shell sleeve, the inner surface of the shell sleeve hoops the outer cylindrical surface formed by the rods, and the outer cylindrical surfaces of the adjacent rods are mutually abutted to form a plurality of through holes. The rods are grouped in a bundle with the outer cylindrical surfaces of adjacent rods abutting in parallel, and the gaps between the rods form a plurality of filter channels, forming a so-called screen, as shown in fig. 4.

The abutment of the outer cylindrical surface between adjacent rods constitutes a plurality of small through holes, which are the technical features embodied by the present invention. When the filtering function is implemented, the material particles smaller than the pore diameters of the pores and the liquid are allowed to pass through, and the material particles larger than the pore diameters of the pores are intercepted, so that the filtering purpose is realized. From the viewpoint of usability, the rods are combined into a bundle and trapped by a sleeve-type shell, and the rods are easily combined into a net-type structure and fixed on a bracket to increase the filtering area and implement the filtering function. The diameter of the rod can be selected according to the actual filtering requirement, and the pore diameters of different specifications can be obtained to meet different filtering requirements. It has the advantages that: the structure is simple, the composition is easy, the rod can be made of different materials, and the filtering is implemented under the condition that the object to be filtered bears large pressure. Because the outer cylindrical surfaces of the rods abut against each other to generate friction force, the longer the rods are, the greater the friction force between the rods is. In addition, the friction coefficient of the rod is different due to different materials. That is to say, the utility model discloses constitute filtering capability's filter sieve, can bear high filtering pressure. The filtration pressure to which it is subjected depends on the length of the rod and the coefficient of friction of the material from which it is made. The high filtration pressure can increase the filtration rate and reduce the water content in the filtered material. Since the material of the rod and the housing is not limited, the rod and the housing made of different materials can be selected according to the physical and chemical properties of the filtered object.

The shell is provided with an inlet and an outlet, and the smoothness of the filtering through hole is realized.

The lengths of the plurality of rods are equal. The two ends of the rod are aligned as far as possible, so that the filter holes formed by bending of the extended part are prevented from being blocked.

The rod is provided with a plurality of annular grooves on the outer cylindrical surface along the axis direction of the rod. As shown in fig. 3, when a part of a certain filter passage formed by the outer cylindrical surfaces of a plurality of adjacent rods is clogged with some of the particulate matter, the annular groove formed therein will allow small particulate matter and liquid to flow out through the annular groove on the pressure source side of the clogging portion and to the adjacent filter passage. The influence of the clogging of the filter function due to the portion can be reduced. At least, the method can increase the decline period of the filtering function and prolong the service life of the filtering screen.

The central portion of the shape formed by the outer cylindrical surfaces of the plurality of rods abutting against each other is cylindrical. The bottom of the sleeve of the shell is closed, and a threaded hole is formed in the center of the closed end. The side wall at the bottom of the sleeve-shaped hole of the shell is provided with a hole which is communicated outwards.

One end of a plurality of rods placed in the housing is close to the sleeve-shaped bottom end in the housing. The set end of the expansion sleeve passes through a central hole formed by the rods, and the outer cylindrical surface of the expansion sleeve is abutted against the rods which are most adjacent to the outer cylindrical surface. The set end of the expansion sleeve is abutted against the sleeve-shaped bottom end of the shell. The thread side of the screw is arranged in the central hole of the expansion sleeve, and the thread side of the screw is in threaded connection with the threaded hole at the bottom end in the shell. The outer cylindrical surface of the middle part of the screw is connected with the inner cylindrical surface of the central hole of the expansion sleeve in a sealing way.

As shown in fig. 1 and 2, the plurality of rods form a cylinder of a central hole, and the expansion sleeve is inserted into the plurality of rod forming holes and is connected to the housing by screws. The expansion sleeve is used for extruding the rods, and promoting the rods to be close to each other as much as possible to form filtering through holes with equal sections.

One end of each rod is close to the sleeve-shaped bottom end in the shell, so that smaller particles of objects and liquid can conveniently enter the sleeve-shaped bottom end side in the shell, and then the smaller particles of objects and liquid are discharged through the holes formed in the side wall of the bottom of the shell.

The expansion sleeve is made of a material which can be restored to deform under stress. The cover expands has the pressurized deformation back, has the power of recovering the deformation, can be so that receive mutual extruded power between the pole of mutual butt, guarantees the stability that the filter through hole formed.

The expansion sleeve is made of a material with a restoring deformation of a stressed part. The expansion sleeve made of the partially restorably deformed material can also achieve the stability of the formation of the filtering through holes.

The middle part of the central hole of the expansion sleeve is of a conical structure, and the outer cylindrical surface of the middle part of the screw is of a conical structure. The middle inner cylindrical surface of the central hole of the expansion sleeve is in sealing butt joint with the outer cylindrical surface of the middle part of the screw. As shown in fig. 1, the middle part of the central hole of the expansion sleeve is of a conical structure and the outer cylindrical surface of the middle part of the screw is of a conical structure, so that the expansion sleeve continues to expand in the process of threaded connection between the screw and the shell, the mutual abutting force between the outer cylindrical surfaces of adjacent rods is enhanced, and the formed filtering through holes are stabilized.

The structure is composed of a plurality of rods, and the outer cylindrical surface of each rod is abutted against the inner cylindrical surface of the shell, and the plurality of rods and the most adjacent rod parts are sealed by sealing fillers. The structure is composed of a plurality of rods, and through holes formed between the rods and the rods at the nearest part are sealed by sealing fillers, wherein the inner cylindrical surface of the through holes is abutted against the outer cylindrical surface of the expansion sleeve. As shown in figure 2, the filter through holes formed between the rods and the outer cylindrical surface of the expansion sleeve are abutted with the rods and the most adjacent rods, and between the rods and the most adjacent rod parts in the outer cylindrical surface of the shell are abutted with each other, the sizes of the filter through holes are irregular, and if a user has strict requirements on the pore diameters of the filter through holes, the filter through holes of the parts can be sealed by sealing fillers. Irregular filter through holes are not allowed to participate in the filtering.

The ends of the rods near the sleeve-shaped bottom end in the housing are tapered. As shown in fig. 1, although the present invention emphasizes having a filtering function that withstands high pressure. It is not excluded that in practice, in the case of objects to be filtered subjected to high pressure, the resulting force causes the end of the rod to be pressed, so that the rod is displaced in the axial direction of the rod, the rod being close to the sleeve-shaped bottom end in the housing, and further close to the sleeve-shaped bottom end in the housing until they abut each other. The smoothness of the filter passage formed by the bars relative to each other will be impaired as a result. Therefore, in the case of a thick rod diameter and workability, the end of the rod portion is tapered, and when the tapered end abuts against the sleeve-shaped bottom end in the housing, the tapered portion of the rod can form a filter through hole perpendicular to the axial direction of the rod without affecting the filter function.

For a rod of small diameter, the tension of the liquid being filtered, due to its relative softness, makes it possible to separate the parts of the rod that are not clamped from each other. The filter through holes of the filter can not influence the liquid outflow because of abutting against the sleeve-shaped bottom end in the shell. Like a common brush pen, when the brush pen is dipped with ink, the brush hair part becomes thick, and the saturated ink expands the adjacent hairs. Therefore, a rod having a small diameter does not need to be tapered at its one end setting end.

Drawings

FIG. 1 is an assembled schematic view of a filter screen for filtration;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is one of the schematic illustrations of the placement of the rods;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a second schematic cross-sectional view of the swing of the rod.

Detailed Description

Example 1

A filter screen for filtration, comprising: a housing 1 and a rod 2; the method is characterized in that:

the shell 1 is of a sleeve type structure, the sleeve structure of the shell 1 is provided with an inlet and an outlet, and the cross section of the rod 2 is circular; the rods 2 are arranged in the sleeve of the shell 1, the inner surface of the sleeve of the shell 1 is tightly hooped on the outer cylindrical surface formed by the rods 2, and the outer cylindrical surfaces of the adjacent rods 2 are mutually abutted to form a plurality of through holes.

The rods 2 are of equal length.

The rod 2 is provided with a plurality of annular grooves on the outer cylindrical surface extending along the axis direction of the rod 2.

The middle part of the shape formed by mutually abutting the outer cylindrical surfaces of the rods 2 is cylindrical; the sleeve-shaped bottom of the shell 1 is closed, and a threaded hole is formed in the center of the closed end; a hole which is communicated outwards is arranged on the side wall of the bottom of the sleeve-shaped hole of the shell 1;

one end of a plurality of rods 2 arranged in the shell 1 is close to the sleeve-shaped bottom end in the shell 1; the set end of the expansion sleeve 3 passes through a central hole formed by the rods 2, and the outer cylindrical surface of the expansion sleeve 3 is abutted against the rods 2 which are most adjacent to the outer cylindrical surface; the set end of the expansion sleeve 3 is abutted against the sleeve-shaped bottom end of the shell 1; the thread side of the screw 4 is arranged in the central hole of the expansion sleeve 3, and the thread side of the screw 4 is in threaded connection with the threaded hole at the bottom end in the shell 1; the outer cylindrical surface of the middle part of the screw 4 is connected with the inner cylindrical surface of the central hole of the expansion sleeve 3 in a sealing way.

The expansion sleeve 3 is made of a material which can be restored to be deformed by force.

The middle part of the central hole of the expansion sleeve 3 is of a conical structure, and the outer cylindrical surface of the middle part of the screw 4 is of a conical structure; the middle inner cylindrical surface of the central hole of the expansion sleeve 3 is in sealing butt joint with the middle outer cylindrical surface of the screw 4.

As shown in fig. 1, the housing 1 is of a sleeve-type construction, with its bottom closed off and provided with holes for the connection of screws 4. The surrounding wall of the bottom of the filter is provided with holes, so that when the object to be filtered is pressed, particles and liquid which are too small pass through the filter through holes formed by the rods 2, and then the particles and the liquid are discharged through the holes formed in the surrounding wall of the bottom of the shell 1. The purpose of this is that if the pressure to which the object to be filtered is subjected is so great that the friction force generated by the pressure between the rods 2 is overcome, the rods 2 will be caused to move along the axial direction of the rods 2, and the bottom of the casing which is of a sleeve-type structure is blocked to prevent the rods 2 from moving continuously.

The expansion sleeve 3 is made of a material which is deformed in a force recovery manner, such as a rubber material. And the middle part of the central hole of the expansion sleeve 3 is of a conical structure, and the outer cylindrical surface of the middle part of the screw 4 is of a conical structure. The filter is characterized in that when the screw 4 is in threaded connection with the shell 1, the conical surface of the screw 4 and the expansion sleeve 3 are mutually extruded to force the expansion sleeve 3 to expand, the sleeve inner cylindrical surface of the shell 1 and the outer cylindrical surface of the expansion sleeve 3 extrude the rods 2 to force the rods 2 to be close to each other, and the outer cylindrical surfaces of the adjacent rods 2 are mutually extruded to form a filter through hole for filtering. The extrusion of the rod 2 is beneficial to the stability of the filter through hole.

The outer cylindrical surface of the rod 2 is provided with a plurality of annular grooves, the purpose of which is to allow the transition of blocked particles and liquids to other filter openings for removal when a filter opening is partially blocked. As shown in fig. 3.

Example 2

Example 2 of a filter screen for filtration is substantially the same as example 1 except that:

the structure is composed of a plurality of rods 2, and the outer cylindrical surface of the structure is abutted against the inner cylindrical surface of the shell 1, and sealing fillers are used for sealing between the rods 2 and the most adjacent parts of the rods 2; the structure formed by a plurality of rods 2, the inner cylindrical surface of the plurality of rods 2 which is abutted with the outer cylindrical surface of the expansion sleeve 3, and the nearest part of the plurality of rods 2 are sealed by sealing filler.

The ends of the rods 2 close to the sleeve-shaped bottom end in the housing 1 are conical.

As shown in fig. 2. The cross section of the formed filtering through hole is uneven between the outer cylindrical surface of the expansion sleeve 3 and the rod which is abutted to the sleeve-type inner wall of the shell 1 and the nearest rod. The pores are sealed with a sealing packing, which does not take part in the filtration.

When the pressure applied to the object to be filtered is too large and the friction force between the rods 2 cannot overcome the pressure applied to the object to be filtered, the rods 2 will move along the axial direction of the rods 2 until the end parts of the rods 2 abut against the blocking end surfaces of the shell 1. The end part of the rod 2 close to the sleeve-shaped bottom end in the shell 1 is designed to be conical, the gap between the cones is enlarged, the filtered rod can flow transversely, and the filtering of the filtering through hole formed by the rods 2 is not influenced, as shown in fig. 3.

Claims

1. A filter screen for filtration, comprising: a housing (1) and a lever (2); the method is characterized in that:

the shell (1) is of a sleeve type structure, the sleeve structure of the shell (1) is provided with an inlet and an outlet, and the cross section of the rod (2) is circular; the rods (2) are arranged in the sleeve of the shell (1), the inner surface of the sleeve of the shell (1) is tightly hooped on the outer cylindrical surface formed by the rods (2), and the outer cylindrical surfaces of the adjacent rods (2) are mutually abutted to form a plurality of through holes.

2. A filter screen for filtration according to claim 1, wherein:

the rods (2) are of equal length.

3. A filter screen for filtration according to claim 2, wherein:

the rod (2) is provided with a plurality of annular grooves on the outer cylindrical surface along the axis direction of the rod (2).

4. A filter screen for filtration according to claim 3, wherein:

the middle part of the shape formed by mutually abutting the outer cylindrical surfaces of the rods (2) is cylindrical; the sleeve-shaped bottom of the shell (1) is closed, and a threaded hole is formed in the center of the closed end; a hole which is communicated outwards is arranged on the side wall of the bottom of the sleeve-shaped hole of the shell (1);

one end of a plurality of rods (2) arranged in the shell (1) is close to the sleeve-shaped bottom end in the shell (1); the set end of the expansion sleeve (3) penetrates through a central hole formed by the rods (2), and the outer cylindrical surface of the expansion sleeve (3) is abutted against the rods (2) which are most adjacent to the outer cylindrical surface; the set end of the expansion sleeve (3) is abutted against the sleeve-shaped bottom end of the shell (1); the thread side of the screw (4) is arranged in a central hole of the expansion sleeve (3), and the thread side of the screw (4) is in threaded connection with a threaded hole at the bottom end in the shell (1); the outer cylindrical surface of the middle part of the screw (4) is connected with the inner cylindrical surface of the central hole of the expansion sleeve (3) in a sealing way.

5. A filter screen for filtration according to claim 4, wherein:

the expansion sleeve (3) is made of a material which can be restored to deform under stress.

6. A filter screen for filtration according to claim 4, wherein:

the expansion sleeve (3) is made of a material with a restoring deformation of a stressed part.

7. A filter screen for filtration according to claim 5, wherein:

the middle part of the central hole of the expansion sleeve (3) is of a conical structure, and the outer cylindrical surface of the middle part of the screw (4) is of a conical structure; the middle inner cylindrical surface of the central hole of the expansion sleeve (3) is in sealing butt joint with the middle outer cylindrical surface of the screw (4).

8. A filter screen for filtration according to claim 7, wherein:

the structure is composed of a plurality of rods (2), and sealing filler is used for sealing between the rods (2) of which the outer cylindrical surfaces are abutted with the inner cylindrical surface of the shell (1) and the most adjacent rods (2); the structure is composed of a plurality of rods (2), and the plurality of rods (2) of which the inner cylindrical surfaces are abutted with the outer cylindrical surface of the expansion sleeve (3) and the plurality of rods (2) of the nearest part are sealed by sealing filler.

9. A filter screen for filtration according to claim 8, wherein:

the ends of the rods (2) close to the sleeve-shaped bottom end in the shell (1) are conical.