CN215462603U

CN215462603U - Liquid filtering device

Info

Publication number: CN215462603U
Application number: CN202120903675.2U
Authority: CN
Inventors: 余中华; 陈佳; 聂进星
Original assignee: Guangdong Sky Dragon Printing Ink Co ltd
Current assignee: Guangdong Sky Dragon Printing Ink Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-01-11
Anticipated expiration: 2031-04-28

Abstract

The invention discloses a liquid filtering device, which comprises a barrel body and a barrel cover detachably connected with the barrel body, wherein the barrel body and the barrel cover form a hollow cavity; a liquid inlet pipe is arranged above the barrel cover, a liquid outlet pipe is arranged below the barrel body, and a detachable filter screen is arranged between the liquid inlet pipe and the liquid outlet pipe; the filter screen divides a hollow cavity consisting of the barrel body and the barrel cover into a cavity to be filtered and a cavity to be filtered, wherein the cavity is close to one side of the liquid inlet pipe and is used for accommodating liquid to be filtered, and a filtered cavity is close to one side of the liquid outlet pipe and is used for accommodating filtered liquid; a stirring and filtering component is arranged in the cavity to be filtered; a liquid pump is arranged on the liquid outlet pipe; the stirring filter assembly comprises a flexible suction pipe and a flexible spray pipe, wherein one end of the flexible suction pipe is in a free state. The liquid filtering device provided by the invention can be used for stirring in a mode of spraying high-speed fluid through the flexible spray pipe to generate reaction force, so that stirring and circulating filtration are simultaneously carried out, and the liquid filtering device is simple in structure, low in cost and good in high maintainability.

Description

Liquid filtering device

Technical Field

The invention relates to the technical field of filtration, in particular to a liquid filtering device.

Background

In industrial production, a filtering apparatus is often used to filter out impurities in liquid, and pressure is generally applied to the liquid to be filtered in order to increase the filtering speed, so that the problem that a filter screen is easily clogged in the filtering operation is caused. In order to prevent clogging, stirring is generally used in the prior art to increase the fluidity of the liquid to be filtered, and a scraper is sometimes used to remove the filtering residue clogging the filter screen by scraping. However, the scraping mode has the defects of large friction, high processing precision and high control requirement, and the filter screen is easy to damage.

Therefore, there is a need to design a liquid filtering device with simple structure, low cost and high maintainability.

Disclosure of Invention

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the liquid filtering device is characterized by comprising a barrel body (10) and a barrel cover (20) detachably connected with the barrel body (10), wherein the barrel body (10) and the barrel cover (20) form a hollow cavity;

a liquid inlet pipe (21) is arranged above the barrel cover (20), a liquid outlet pipe (11) is arranged below the barrel body (10), and a detachable filter screen (30) is arranged between the liquid inlet pipe (21) and the liquid outlet pipe (11);

the filter screen (30) divides a hollow cavity formed by the barrel body (10) and the barrel cover (20) into a cavity to be filtered and a cavity to be filtered, wherein the cavity is close to one side of the liquid inlet pipe (21) and is used for accommodating liquid to be filtered, and a cavity to be filtered and used for accommodating liquid to be filtered are close to one side of the liquid outlet pipe (11);

the filter screen (30) is used for filtering specific substances in the liquid to be filtered;

a stirring and filtering component (40) is arranged in the cavity to be filtered;

a liquid pump (60) is arranged on the liquid outlet pipe (11);

the stirring and filtering assembly (40) comprises a circulating pump (41) and a guide rod (42), a circulating liquid suction pipe (421) and a circulating liquid spraying pipe (422) are arranged inside the guide rod (42), one end of the circulating liquid suction pipe (421) and one end of the circulating liquid spraying pipe (422) are respectively communicated with an inlet and an outlet of the circulating pump (41), the other end of the circulating liquid suction pipe (421) and the other end of the circulating liquid spraying pipe (422) are respectively communicated with one end of a flexible suction pipe (45) and one end of a flexible spray pipe (44), and the other end of the flexible suction pipe (45) and the other end of the flexible spray pipe (44) are in a free state;

and the circulating pump (41) and the liquid pump (60) are respectively electrically connected with the controller.

Preferably, one end of the guide rod (42) far away from the circulating pump (41) is sleeved with a rotating sleeve (43) capable of rotating and/or sliding along the axis of the guide rod (42), a liquid suction cavity (431) and a liquid spraying cavity (432) which are divided by a sleeving surface of the guide rod (42) are arranged inside the rotating sleeve (43), the liquid suction cavity (431) and the liquid spraying cavity (432) are respectively communicated with the circulating liquid suction pipe (421) and the circulating liquid spraying pipe (422), the side walls of the liquid suction cavity (431) and the liquid spraying cavity (432) are respectively provided with a flexible suction pipe (45) and a flexible spraying pipe (44), one ends of the flexible suction pipe (45) and the flexible spraying pipe (44) are respectively communicated with the liquid suction cavity (431) and the liquid spraying cavity (432), and the other ends of the flexible suction pipe (45) and the flexible spraying pipe (44) are in a free state;

and the two ends of the rotary sleeve (43) are respectively provided with an upper limiting block (423) and a lower limiting block (424) which limit the liquid suction cavity (431) and the liquid spraying cavity (432) to be separated from and communicated with the circulating liquid suction pipe (421) and the circulating liquid spraying pipe (422).

Preferably, the guide rod (42) is a rigid rod-shaped structure, and the flexible suction pipe (45) and the flexible spray pipe (44) are flexible hoses with certain elasticity; the flexible suction tube (45) has the most length and the free end is kept in contact with the filter screen (30) under the self-elastic action, and the length of the flexible nozzle (44) is not enough to contact the filter screen (30) when the free end moves.

Preferably, the flexible suction pipes (45) are provided in a number of two or more.

Preferably, a pipette head (451) is arranged at the inlet end of the flexible pipette (45), and two or more pipette holes communicated with the inlet end of the flexible pipette (45) are arranged on the pipette head (451).

Preferably, the pipette head (451) is a spherical structure, a weight chamber for adjusting the weight of the pipette head (451) is provided inside the pipette head (451), and the pipette head (451) is maintained in suspension in the liquid to be filtered by filling a material having a density different from that of the pipette head (451) in the weight chamber.

Preferably, the agitation filter assembly (40) includes a second filter (46) disposed between the circulation suction pipe (421) and the circulation spray pipe (422) at an outer side of the tub cover (20).

Preferably, the screen (30) and the second filter (46) are any one or a combination of a flexible filter material, a rigid filter material, and a loose filter material.

Preferably, the side wall of the liquid spraying cavity (432) is provided with a directional nozzle (433) which enables the rotary sleeve (43) to rotate.

Preferably, a filter screen retaining ring (31) is arranged on the filter screen (30), and the filter screen retaining ring (31) is detachably fixed between the barrel body (10) and the barrel cover (20).

Preferably, the liquid pump (60) is a pneumatic pump, and the circulation pump (41) is a variable displacement pneumatic pump.

Preferably, a liquid level sensor (22) is arranged on the barrel cover (20), and the liquid level sensor (22) is electrically connected with the controller.

Preferably, the liquid level sensor (22) is provided with an upper liquid level probe and a lower liquid level probe, the lower liquid level probe is positioned above a through hole at the topmost part of the filter screen (30), and the upper liquid level probe is positioned between the upper liquid level probe and the top of the barrel cover (20).

Preferably, a pressure sensor (23) is arranged on the barrel cover (20), and the pressure sensor (23) is electrically connected with the controller.

Preferably, the barrel body (10) and the barrel cover (20) are fixed through detachable bolts, and a sealing ring (50) is arranged between the barrel body (10) and the barrel cover (20).

Compared with the prior art, the invention has the beneficial effects that:

1. stirring is carried out in a mode that the flexible spray pipe sprays high-speed fluid to generate reaction force, stirring and circulating filtration are carried out simultaneously, stirring is not required to be carried out by using an additional power source, the structure is simple, the cost is saved, and good maintainability is achieved;

2. the rotating sleeve is driven to drive the flexible suction pipe to move randomly by a mode of generating a reaction force by spraying high-speed fluid through the flexible spray pipe, so that residues generated by filtering at each part of the filter screen can be sucked away randomly by the flexible suction pipe, and the filter screen is prevented from being blocked; compared with the traditional method of cleaning residues by adopting a scraper scraping mode, the method has the characteristics of small friction and no need of accurate control, and has the characteristic of randomly cleaning any position;

3. the mode of sucking away the residue is adopted, and the condition that the blockage is aggravated because the residue is extruded to the filter hole when the residue is cleaned by scraping with the scraper can be avoided.

4. The second filter can be replaced or cleaned without stopping, so that the working efficiency is improved;

5. the filter screen and the second filter are respectively made of different filtering materials, so that the best filtering effect is realized for different types of filtered objects.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic view of the agitation filter assembly as a whole;

fig. 3 is a cross-sectional view of an agitation filter assembly.

Wherein: a tub 10; a liquid outlet pipe 11; a tub cover 20; a liquid inlet pipe 21; a liquid level sensor 22; a pressure sensor 23; a strainer 30; a screen retaining ring 31; the agitation filter assembly 40; the circulation pump 41; a guide rod 42; a circulation pipette 421; a circulating spray pipe 422; an upper limit block 423; a lower limit block 424; a rotating sleeve 43; an aspiration chamber 431; a liquid spray chamber 432; a directional nozzle 433; a flexible spout 44; a flexible straw 45; a pipette head 451; a second filter 46; a seal ring 50; and a liquid pump 60.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention will be further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 1, a liquid filtering apparatus includes a barrel body 10 and a barrel cover 20 detachably connected to the barrel body 10, wherein the barrel body 10 and the barrel cover 20 form a hollow cavity;

a liquid inlet pipe 21 is arranged above the barrel cover 20, a liquid outlet pipe 11 is arranged below the barrel body 10, and a detachable filter screen 30 is arranged between the liquid inlet pipe 21 and the liquid outlet pipe 11;

the filter screen 30 divides a hollow cavity composed of the barrel body 10 and the barrel cover 20 into a to-be-filtered cavity which is close to one side of the liquid inlet pipe 21 and is used for containing liquid to be filtered and a filtered cavity which is close to one side of the liquid outlet pipe 11 and is used for containing filtered liquid;

the screen 30 is used to filter a specific substance in a liquid to be filtered.

A stirring and filtering component 40 is arranged in the cavity to be filtered;

the liquid outlet pipe 11 is provided with a liquid pump 60, and the liquid pump 60 is electrically connected with the controller.

In this embodiment, the filter screen 30 is a cylindrical metal mesh plate with 75um pores to filter particles larger than 75um (when used, different pores or different types of filters can be used as required). When the liquid filter is used, liquid to be filtered flows into a cavity to be filtered through the liquid inlet pipe 21, under the action of the liquid pump 60, pressure difference is generated between the cavity to be filtered and the cavity to be filtered (the pressure difference can be generated by the liquid pump 60 and can also be generated by the self weight of the liquid), the liquid to be filtered flows into the cavity to be filtered after being filtered through the filter screen 30, residues generated by filtering are reserved in the cavity to be filtered, the liquid to be filtered in the cavity to be filtered is stirred and filtered again by the stirring and filtering component 40, the filtered liquid flows out of the liquid outlet pipe 11 and enters a packaging barrel or the next procedure.

Further, as shown in fig. 1, 2 and 3, the stirring and filtering assembly 40 includes a circulation pump 41 and a guide rod 42, a circulation liquid suction pipe 421 and a circulation liquid spray pipe 422 are arranged inside the guide rod 42, one end of the circulation liquid suction pipe 421 and one end of the circulation liquid spray pipe 422 are respectively communicated with an inlet and an outlet of the circulation pump 41, the other end of the circulation liquid suction pipe 421 and the other end of the circulation liquid spray pipe 422 are respectively communicated with one end of a flexible suction pipe 45 and one end of a flexible spray pipe 44, and the other end of the flexible suction pipe 45 and the other end of the flexible spray pipe 44 are in a free state;

the circulating pump 41 is electrically connected with the controller.

Further, the guide rod 42 is a rigid rod-shaped structure, and the flexible suction pipe 45 and the flexible nozzle 44 are flexible hoses with certain elasticity; said flexible suction pipe 45 has the most length and its free end is kept in contact with the sieve 30 under its own elastic action, said flexible nozzle 44 has a length such that its free end is not enough to contact the sieve during its movement;

when the embodiment is used, after the liquid to be filtered is sucked from the flexible suction pipe 45 by the circulating pump 41, the liquid is sprayed out of the flexible spray pipe 44 at a high speed, and under the action of the elasticity of the flexible spray pipe 44 and the reaction force of the sprayed liquid, the spraying angle and the position of the flexible spray pipe 44 generate high-speed fluid which changes randomly, so that the liquid in the cavity to be filtered flows randomly; the flexible suction tube 45 sucks away the residue on the screen, and this embodiment agitates the random high velocity fluid and sucks away the residue on the screen 30, avoiding clogging of the filter holes of the screen 30.

Further, as shown in fig. 1, 2 and 3, one end of the guide rod 42, which is away from the circulating pump 41, is sleeved with a rotating sleeve 43 which can rotate and/or slide along the axis of the guide rod 42, a liquid suction cavity 431 and a liquid spraying cavity 432 which are partitioned by a sleeving surface of the guide rod 42 are arranged inside the rotating sleeve 43, the side walls of the liquid suction cavity 431 and the liquid spraying cavity 432 are respectively provided with a flexible suction pipe 45 and a flexible spray pipe 44, one ends of the flexible suction pipe 45 and the flexible spray pipe 44 are respectively communicated with the liquid suction cavity 431 and the liquid spraying cavity 432, and the other ends of the flexible suction pipe 45 and the flexible spray pipe 44 are in a free state;

the two ends of the rotary sleeve 43 are respectively provided with an upper limit block 423 and a lower limit block 424 which limit the state that the liquid suction cavity 431 and the liquid spray cavity 432 are respectively disconnected with the circulating liquid suction pipe 421 and the circulating liquid spray pipe 422.

The guide rod 42 is a rigid rod-shaped structure, and the flexible suction pipe 45 and the flexible spray pipe 44 are flexible hoses with certain elasticity; the flexible suction tube 45 has the most length and its free end is kept in contact with the sieve 30 under its own elastic action, and the length of the flexible nozzle 44 is such that its free end is not sufficient to contact the sieve during its movement.

In this embodiment, the reaction force generated by the fluid ejected from the flexible nozzle 44 randomly rotates and/or slides the rotating sleeve 43 along the axis of the guide rod 42, so that the flexible suction pipe 45 can contact any filtering hole of the filter screen 30, thereby better sucking away the residue on the filter screen 30 and preventing the filtering hole of the filter screen 30 from being blocked.

Further, the number of the flexible suction pipes 45 is two or more; a greater number of flexible suction tubes 45 may provide better suction of residue from screen 30.

Further, a pipette head 451 is arranged at the inlet end of the flexible pipette 45, and two or more pipette holes communicated with the inlet end of the flexible pipette 45 are arranged on the pipette head 451. The suction head 451 is provided with a plurality of liquid suction holes, so that the efficiency of adsorbing the residue can be increased, and the adsorption force generated when the suction port of the flexible suction pipe 45 is adsorbed by the filter screen can be reduced, thereby preventing the influence on the movement of the flexible suction pipe 45.

Further, the pipette head 451 is a spherical structure, a weight chamber for adjusting the weight of the pipette head 451 is provided inside the pipette head 451, and the pipette head 451 is maintained in suspension in the liquid to be filtered by filling a material having a density different from that of the pipette head 451 in the weight chamber. Keeping the suspension state can prevent the pipette head 451 from sinking or floating, which affects the range of motion of the pipette.

Further, the agitation filter assembly 40 includes a second filter 46 disposed between the circulation suction pipe 421 and the circulation spray pipe 422 and outside the tub cover 20.

The second filter 46 can clean the residues under the condition of not opening the barrel cover 20, so that the frequency of opening the barrel cover to clean the filter screen 30 is reduced; in addition, when the second filter 46 is cleaned, the operation of the circulating pump 41 can be stopped only temporarily, the normal operation of the filter screen 30 is not affected, the second filter 46 can be replaced or cleaned without stopping, and the operation efficiency is improved.

Further, the screen 30 and the second filter 46 may be any one or a combination of a flexible filter material, a rigid filter material, and a loose filter material.

Through the combination of different filtering materials, the optimal combination of different types of objects to be filtered is realized, for example, the filtering net 30 filters particles by using a metal pore plate, the second filter 46 filters strip-shaped fibers by using porous ceramics, and different filtering materials are selected according to the characteristics of the objects to be filtered, so that the optimal filtering effect is realized.

Further, the side wall of the liquid spraying chamber 432 is provided with a directional nozzle 433 for rotating the rotary sleeve 43. By enhancing the rotation of the rotary sleeve 43, the movement of the flexible suction pipe 45 and the flexible nozzle 44 is enhanced, and the efficiency of adsorbing residues and stirring of the filter screen 30 is improved.

Further, a screen retaining ring 31 is disposed on the screen 30, and the screen retaining ring 31 is detachably fixed between the tub 10 and the tub cover 20. The edge shape of the screen 30 can be maintained by the screen retaining ring 31, facilitating the fixing or removal.

Further, the liquid pump 60 is a pneumatic pump, the circulating pump 41 is a variable pneumatic pump, and by changing the flow rate of the circulating liquid, the reaction of the fluid ejected by the flexible nozzle 44 is changed, so that the running paths and speeds of the flexible suction pipe 45 and the flexible nozzle 44 are more variable and random; the pneumatic pump has good safety when being used for filtering flammable and explosive liquid.

Further, a liquid level sensor 22 is arranged on the barrel cover 20, and the liquid level sensor 22 is electrically connected with the controller;

further, the liquid level sensor 22 is provided with an upper liquid level probe and a lower liquid level probe, the lower liquid level probe is located above the through hole at the topmost part of the filter screen 30, and the upper liquid level probe is located between the upper liquid level probe and the top of the barrel cover 20. The liquid to be filtered is kept at a proper liquid level height by an upper liquid level probe and a lower liquid level probe arranged on the liquid level sensor 22.

Further, a pressure sensor 23 is arranged on the barrel cover 20, and the pressure sensor 23 is electrically connected with the controller. The controller determines whether the filter screen 30 is clogged by calculating a difference between pressures that can be generated when the pressure sensor 23 and the liquid pump 60 perform normal liquid pumping filtration, and if the filter screen 30 is clogged, the controller sends a signal to prompt an operator to clean or replace the filter screen 30.

Further, the barrel body 10 and the barrel cover 20 are fixed by detachable bolts, and a sealing ring 50 is arranged between the barrel body 10 and the barrel cover 20.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the protective scope of the present patent claims.

Claims

1. A liquid filtration device, characterized by: the barrel comprises a barrel body (10) and a barrel cover (20) detachably connected with the barrel body (10), wherein the barrel body (10) and the barrel cover (20) form a hollow cavity;

the filter screen (30) is used for filtering solid matters in liquid to be filtered;

a liquid pump (60) is arranged on the liquid outlet pipe (11);

2. A liquid filtration device as claimed in claim 1 wherein: one end, far away from the circulating pump (41), of the guide rod (42) is sleeved with a rotating sleeve (43) capable of rotating and/or sliding along the axis of the guide rod (42), a liquid suction cavity (431) and a liquid spraying cavity (432) which are divided by a sleeving surface of the guide rod (42) are arranged inside the rotating sleeve (43), the liquid suction cavity (431) and the liquid spraying cavity (432) are respectively communicated with the circulating liquid suction tube (421) and the circulating liquid spraying tube (422), the side walls of the liquid suction cavity (431) and the liquid spraying cavity (432) are respectively provided with a flexible suction tube (45) and a flexible spraying tube (44), one ends of the flexible suction tube (45) and the flexible spraying tube (44) are respectively communicated with the liquid suction cavity (431) and the liquid spraying cavity (432), and the other ends of the flexible suction tube (45) and the flexible spraying tube (44) are in a free state;

3. A liquid filtration device as claimed in claim 1 or 2 wherein: the guide rod (42) is a rigid rod-shaped structure, and the flexible suction pipe (45) and the flexible spray pipe (44) are flexible hoses with certain elasticity; the flexible suction pipe (45) has the most length and the free end is kept in contact with the filter screen (30) under the self elastic action, and the length of the flexible spray pipe (44) is not enough to contact the filter screen (30) when the free end moves; the number of the flexible suction pipes (45) is two or more.

4. A liquid filtration device as claimed in claim 3 wherein: the inlet end of the flexible suction pipe (45) is provided with a suction pipe head (451), and the suction pipe head (451) is provided with two or more liquid suction holes communicated with the inlet end of the flexible suction pipe (45).

5. The liquid filtering device of claim 4, wherein: the pipette head (451) is a spherical structure body, a balance weight cavity for adjusting the weight of the pipette head (451) is arranged in the pipette head (451), and the pipette head (451) is kept suspended in the liquid to be filtered by filling a substance with a density different from that of the pipette head (451) in the balance weight cavity.

6. A liquid filtration device as claimed in claim 1 wherein: the stirring and filtering assembly (40) comprises a second filter (46) which is arranged between the circulation liquid suction pipe (421) and the circulation liquid spray pipe (422) and is positioned outside the barrel cover (20).

7. A liquid filtration device as claimed in claim 2 wherein: the side wall of the liquid spraying cavity (432) is provided with a directional nozzle (433) which enables the rotary sleeve (43) to rotate.

8. A liquid filtration device as claimed in claim 1 wherein: the liquid pump (60) is a pneumatic pump, and the circulation pump (41) is a variable displacement pneumatic pump.

9. A liquid filtration device as claimed in claim 1 wherein: a filter screen retaining ring (31) is arranged on the filter screen (30), and the filter screen retaining ring (31) is detachably fixed between the barrel body (10) and the barrel cover (20); the barrel cover (20) is provided with a liquid level sensor (22), the liquid level sensor (22) is electrically connected with the controller, the liquid level sensor (22) is provided with an upper liquid level probe and a lower liquid level probe, the lower liquid level probe is positioned above a through hole at the topmost part of the filter screen (30), and the upper liquid level probe is positioned between the upper liquid level probe and the top of the barrel cover (20);

the barrel cover (20) is provided with a pressure sensor (23), and the pressure sensor (23) is electrically connected with the controller;

the barrel body (10) and the barrel cover (20) are fixed through detachable bolts, and a sealing ring (50) is arranged between the barrel body (10) and the barrel cover (20).