CN110559716A - Filter device and cutting fluid filtration system - Google Patents

Abstract

The invention discloses a filtering device, comprising: a filter cartridge having an accommodating space; a filter screen assembly arranged in the accommodating space and enclosing a purification space capable of blocking dirt from the outside; stirring blades, at least A part can be rotated in the purification space; a spray pipe assembly, the spray head of which faces the stirring blade; a water pump, the water inlet end is connected to the purification space, and the water outlet is connected to the spray pipe. The invention also discloses a cutting fluid filtering system. The injection pipe assembly of the present invention drives the stirring blades to rotate through high-pressure water flow, which can generate recoil water flow inside the filter screen assembly outward, thereby cleaning away the solid particles attached to the outside of the filter screen assembly, without taking out the filter screen assembly for cleaning.

Description

Filtration device and cutting fluid filtration system

technical field

The invention belongs to the technical field of metal cutting, and in particular relates to a filtering device and a cutting fluid filtering system.

Background technique

When cutting metal workpieces, it is necessary to spray cutting fluid on the workpiece. These cutting fluids are mixed with metal chips generated during the cutting process. However, this cutting fluid containing cutting chips cannot be directly sprayed on the workpiece. It is necessary to use a filter device to remove the cutting chips in order to be used normally.

Chinese patent application CN109746759 discloses a cutting fluid cooling device for CNC machine tools, which filters impurities through a combination of magnets and coarse filter screens, but this method still has certain problems, at least including: solid matter with smaller particles It cannot be filtered out. If a filter bag with a smaller mesh is used for filtering, the filter bag needs to be taken out frequently for cleaning.

How to provide a device with good filtering effect and the filter screen does not need to be taken out for cleaning is an urgent problem to be solved.

Contents of the invention

One object of the present invention is to provide a filtering device, comprising:

The filter cartridge has an accommodating space;

The filter assembly is arranged in the accommodating space and encloses a purification space that can block dirt from the outside;

stirring blades, at least partially rotatable in the clean space;

Injection tube assembly, the nozzle of which faces the mixing blade;

A water pump, the water inlet end of which is connected to the purification space, and the water outlet end is connected to the spray pipe.

In one aspect of this case, the injection pipe assembly drives the stirring blades to rotate through high-pressure water flow, which can generate recoil water flow inside the filter screen assembly outward, thereby cleaning away the solid particles attached to the outside of the filter screen assembly without taking out the filter screen assembly cleaning.

In another aspect of this case, the water source for the injection pipe assembly comes from the purified water in the filter assembly, which can realize water recycling, and at the same time, the water sprayed on the stirring blade will not pollute the purification space.

Further, in one embodiment, the spray pipe assembly can selectively face the stirring blade in different clockwise directions.

In this technical solution, the stirring blade can realize forward and reverse rotation, which can more thoroughly remove the particles attached to the outer surface of the filter screen assembly.

Further, in one embodiment, a liquid outlet is also included, and a three-way ball valve is communicated between the liquid outlet, the water outlet end of the water pump and the spray pipe assembly.

In this technical scheme, the liquid outlet is mainly used to recycle the purified liquid, and the liquid outlet and the injection pipe assembly are connected to the same water pump through a three-way ball valve, which can greatly reduce the cost (compared to the injection pipe assembly and the liquid outlet assembly). In the case of using a water pump separately).

Another object of the present invention is to provide a cutting fluid filtration system, comprising:

The filter device;

Machining machine tools, including:

Fluid storage tank for collecting cutting fluid;

A lift pump is connected between the liquid storage tank and the liquid inlet of the filter device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a perspective view of the three-dimensional structure of the cutting fluid filtration system in an embodiment of the present application;

Fig. 2 is a perspective structural schematic diagram of another perspective of the cutting fluid filtration system in an embodiment of the present application;

Fig. 3 is a cross-sectional view of a filter device in an embodiment of the present application;

Fig. 4 is an exploded schematic diagram of a filter cartridge assembly in an embodiment of the present application;

Fig. 5 is a schematic diagram of the state of the stirring blade rotating forward in the second embodiment of the present application;

Fig. 6 is a schematic diagram of the reverse rotation state of the stirring blade in the second embodiment of the present application.

Detailed ways

The present invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a teaching to one skilled in the art that, in fact, any suitably detailed embodiment may differ in any suitably detailed embodiment. The manner employs the representative basis of the present invention.

The embodiment of the present application provides a filtering device 10, which is used to filter the liquid containing impurities and recycle or discharge the purified liquid at the same time.

In the following illustrations, the application of the filter device on cutting machine tools is mainly described, but it should be noted that the filter device in this embodiment is also applicable to other fields that require filtration of solid impurities.

As shown in FIG. 1 and FIG. 2 , in one embodiment, a cutting fluid filtering system is disclosed, including a cutting machine tool 10 and a filtering device 20 .

The cutting machine tool 10 is a process of cutting excess material from a metal workpiece with a tool to obtain parts that meet the requirements of shape, dimensional accuracy, and surface quality. Cutting fluid mixed with metal chips is produced during the process.

The cutting machine tool 10 includes a liquid storage tank 11 and a lift pump 12, the liquid storage tank 11 is used to recover the cutting fluid mixed with metal cutting chips, and the lift pump 12 is used to send the cutting fluid in the liquid storage tank 11 into the filter device 20 for further processing Filtration treatment, so as to remove the metal cutting chips in the cutting fluid, the metal cutting chips can be recycled after being collected, and the clean cutting fluid after filtering can be sent to the cutting machine tool 10 for reuse.

In one embodiment, the liquid storage tank 11 is a rectangular groove with an open top, the metal cutting tool (not shown) and the fixing device (not shown) of the metal workpiece are arranged on the top of the liquid storage tank 11, and the metal workpiece is processed The cutting fluid containing impurities generated in the cutting fluid falls into the fluid storage tank 11 under the action of gravity and deflector (not shown in the figure).

In one embodiment, the lift pump 12 is supported and installed on the liquid storage tank 11 through the support plate 13 . The lift pump 12 is preferably arranged at one end of the liquid storage tank 11 and arranged as close as possible to the filter device 20 .

In one embodiment, a roller 14 is provided at the bottom of the liquid storage tank 11 . The lifting pump 12, the cutting tool, etc. are all supported on the liquid storage tank, so that the cutting machine tool as a whole can be moved according to the position needs.

The filter device 20 includes a frame 21 , a filter cartridge assembly 22 and a water pump 23 mounted on the frame 21 .

The bracket 21 constitutes a support carrier, which includes a horizontal support platform 211 , on which the filter cartridge assembly 22 and the water pump 23 are installed.

In one embodiment, the bottom end of the bracket 21 is provided with rollers 212 , and the filtering device 20 as a whole can be moved by the rollers 212 according to the position needs.

The filter cartridge assembly 22 includes a cylinder body 221 and a cover body 222 , the cylinder body 221 is preferably a cylinder with an open top, and the cover body 222 covers the top end of the cylinder body 221 . The cylinder 221 provides a filtering space for cutting fluid, and the cover 222 is detachably fixed to the top edge of the cylinder 221 by bolts.

In one embodiment, in order to facilitate opening and carrying of the cover body 222 , a handle 2221 is also provided on the cover body 222 .

In one embodiment, a pressure relief valve 2222 is further disposed on the cover body 222 .

In one embodiment, the bottom end of the cylinder body 221 is mounted on the support platform 211 through a plurality of support legs 2211, and the number of support legs 2211 is preferably set to three. Each support leg 2211 is formed by bending a metal plate, the top of the support leg 2211 is welded to the bottom of the cylinder 221 , and the bottom of the support leg 2211 and the support table 211 are detachably fixed by bolts.

As shown in FIG. 3 and FIG. 4 , the filter cartridge assembly 22 further includes a filter screen assembly 223 and a stirring blade 224 disposed in the cylinder body 221 .

The filter screen assembly 223 encloses a purification space that can block dirt from the outside, and includes a mesh cylinder 2231 and a filter bag 2232 sleeved on the outside of the mesh cylinder 2231 .

In one embodiment, the mesh cylinder 2231 is a metal cylinder 2231 with an open top, and a plurality of cavities are opened on its side and bottom. The material of the mesh cylinder 2231 is preferably aluminum alloy or stainless steel.

In this technical solution, the mesh cylinder 2231 is used to form a framework, which facilitates the fixing of the filter bag 2232 .

The filter bag 2232 filters the cutting fluid entering the cylinder 221, which can block the metal cutting chips outside the purification space and allow the purified liquid to enter. The material of the filter bag 2232 can be selected from PET (polyester) fiber, polypropylene (PP) fiber/PP microfiber, nylon single fiber, polytetrafluoroethylene (PTFE) and the like.

An annular support portion 2212 protrudes from the inner wall of the cylinder body 221 . The top edge of the mesh cylinder 2231 is bent around to form an annular edge 22311 , and the edge 22311 is matched and supported on the support portion 2212 .

The top end of the filter bag 2232 is squeezed between the edge 22311 and the support part 2212, and the edge 22311 and the support part 2212 can be further fixed by bolts.

A liquid inlet 2213 is provided on the barrel 221, and the liquid inlet 2213 communicates with the lift pump 12 through a pipeline. The recovered cutting fluid enters between the cylinder body 221 and the filter cartridge assembly 22 through the liquid inlet 2213, metal shavings and other solid impurities remain outside the purification space under the barrier of the filter bag 2232, and remain on the surface of the filter bag 2232 or fall Drop to the bottom end of cylinder 221.

The bottom of the cylinder 221 is also provided with a waste liquid outlet 2214, through which the solid impurities in the cylinder 221 can be cleaned regularly.

The stirring blade 224 is rotatably connected to the bottom surface of the cover body 222 through the stirring shaft 2241 . During installation, the stirring blade 224 and the cover body 222 can be pre-assembled into one body, and then installed with the cylinder body 221 as a whole.

The bottom end of the stirring blade 224 extends into the clean space of the net cylinder 2231 . When the stirring blade 224 rotates, it can drive the liquid in the purification space to disturb along a certain clockwise direction, and remove the solid impurities attached to the outer surface of the filter bag 2232 through the recoil action, without disassembling the filter bag for cleaning, which improves the efficiency of the filter bag. cleaning efficiency.

In one embodiment, the stirring blade 224 is arranged coaxially with the cylinder 221,

Filtration device 20 also comprises injection tube assembly 24, and injection tube assembly 24 is installed on cylinder body 221, and the top of stirring blade 224 protrudes above the clean space and cooperates with the nozzle of injection tube assembly 24, and the nozzle of injection tube assembly 24 is used for The high-pressure water flow is injected, and the high-pressure water flow is used as the driving force of the stirring blade, and then the stirring blade is driven to rotate.

In this technical solution, the liquid entering the purification space must be clean, and most of the water jetted from the nozzle will fall into the purification space, so the liquid in the nozzle must be free of solid impurities. In this embodiment, the water pump 23 establishes a circulating water path between the purification space and the spray pipe assembly 24 .

Specifically, the water inlet end of the water pump 23 extends into the purification space through the pipeline 231 to lead out the filtered cutting fluid in the purification space. The pipe assembly 24 provides a source of clean water, and the other way supplies the cutting machine tool 10 .

Further, a three-way ball valve 232 is provided between the water outlet end of the water pump 23 , the spray pipe assembly 24 and the pipeline supplying the cutting machine tool 10 .

In this technical solution, the three-way ball valve 232 can alternatively supply water to the spray pipe assembly 24 or to supply water to the cutting machine tool 10 .

In a preferred embodiment, the spray tube assembly 24 includes a forward spray tube 241 and a reverse spray tube 242 that can be selected to work, and the spray heads of the forward spray tube 241 and the reverse spray tube 242 face to The stirring blade 224.

Further, a three-way ball valve 233 is provided between the forward injection pipe 241 , the reverse injection pipe 242 and the three-way ball valve 232 .

In this technical solution, by arranging the forward injection pipe 241 and the reverse injection pipe 242, the stirring blade can be selectively driven to rotate forward or reversely. Then let the stirring blade rotate in reverse for a certain period of time, so that the impurities attached to the surface of the filter bag can be thoroughly cleaned.

In the second embodiment, as shown in Fig. 5 and Fig. 6 , the spray pipe assembly 24 is provided with only one spray pipe 243, and the spray head of the spray pipe 243 can swing in the horizontal plane.

In this technical solution, the position of the injection pipe 243 is switched by swinging, so as to change the clockwise direction of the spray head facing the stirring blade, and then switchably drive the stirring blade to rotate forward (Figure 5) or reverse rotation (Figure 6). .

In the third embodiment, the spray tube assembly 24 is provided with only one spray tube 243, and the cylinder body 221 is provided with two mounting holes, and the spray tube can be inserted in a different mounting hole, and each mounting hole corresponds to A clockwise direction.

During operation, one of the injection pipes 243 is inserted into one mounting hole, and the stirring blade is driven to rotate forward by high-pressure water flow; when the stirring blade needs to be driven to rotate in the reverse direction, the injection pipe 243 can be inserted into another mounting hole.

The working principle of the system in this embodiment is: the cutting machine tool 10 cuts the metal workpiece, the cutting fluid mixed with metal cutting chips generated during the cutting process is collected through the liquid storage tank 11, and the lift pump 12 transfers the liquid in the liquid storage tank 11 The cutting fluid is lifted and sent into the cylinder 221, the metal impurities in the cutting fluid are blocked by the filter bag 2232 and retained in the space between the cylinder 221 and the filter assembly 223, and the water pump 23 draws out the filtered cutting fluid in the purified space And send into cutting machine tool 10 and carry out recycling. When it is necessary to clean the filter bag, switch the three-way ball valve 232 so that the purified cutting fluid passes to the injection pipe assembly 24, and the injection pipe assembly 24 generates high-pressure water flow to drive the stirring blade to rotate, and removes the outside of the filter bag under the action of recoil. Solid impurities attached to the surface.

Aspects, embodiments, features and examples of the present invention are to be considered illustrative in all respects and not intended to be limiting, the scope of which is defined only by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the invention as claimed.

The use of headings and sections in this application is not meant to limit the invention; each section may apply to any aspect, embodiment or feature of the invention.

Throughout this application, where compositions are described as having, comprising, or comprising particular components, or where processes are described as having, comprising, or comprising particular process steps, it is contemplated that compositions of the present teachings also essentially consists essentially of, or consists of, the recited components, and the processes taught herein also consist essentially of, or consist of, the recited process steps.

In this application, where an element or component is referred to as being included in and/or selected from a list of recited elements or components, it should be understood that the element or component may be any of the recited elements or components and A group consisting of two or more of the described elements or components can be selected. In addition, it is to be understood that elements and/or features of compositions, devices, or methods described herein may be combined in various ways, whether explicitly stated or implied herein, without departing from the spirit and scope of the teachings of the present invention. Instructions included.

Unless specifically stated otherwise, the use of the terms "include, includes, including", "have, has, or having" should generally be understood as open-ended and non-limiting.

The use of the singular herein includes the plural (and vice versa) unless specifically stated otherwise. Furthermore, the singular forms "a, an" and "the" include plural forms unless the context clearly dictates otherwise. Additionally, where the term "about" is used preceding a quantity, unless specifically stated otherwise, the present teachings also include the particular quantity itself.

It should be understood that the order of steps or order for performing certain actions is immaterial so long as the teachings remain operable. Furthermore, two or more steps or actions may be performed simultaneously.

It should be understood that the drawings and descriptions of the present invention have been simplified to illustrate elements relevant to a clear understanding of the invention and to eliminate other elements for the purpose of clarity. However, those skilled in the art will recognize that these and other elements may be desirable. However, since such elements are well known in the art, and since they do not facilitate a better understanding of the invention, a discussion of such elements is not provided herein. It should be understood that the figures are presented for illustrative purposes and not as construction drawings. Omitted details and modifications or alternative embodiments are within the purview of those skilled in the art.

It will be appreciated that in particular aspects of the invention, a single component may be replaced by multiple components and multiple components may be replaced by a single component to provide an element or structure or to perform a given function or functions. Except where such substitution would not operate to practice the particular embodiment of the invention, such substitutions are considered to be within the scope of the invention.

Although the present invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made without departing from the spirit and scope of the invention and that substantial, etc. Effects replace elements of the described embodiments. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is not intended that the invention be limited to the particular embodiments disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Furthermore, unless specifically stated otherwise, any use of the terms first, second, etc. does not imply any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

Claims (12)

1. A filtering device, characterized in that, comprising: The filter cartridge has an accommodating space; The filter assembly is arranged in the accommodating space and encloses a purification space that can block dirt from the outside; stirring blades, at least partially rotatable in the clean space; Injection tube assembly, the nozzle of which faces the mixing blade; A water pump, the water inlet end of which is connected to the purification space, and the water outlet end is connected to the spray pipe. 2 . The filter device according to claim 1 , characterized in that, the injection pipe assembly can selectively face the stirring blade in different clockwise directions. 3 . 3 . The filtering device according to claim 1 , wherein the spray pipe assembly comprises a spray pipe, and the nozzle of the spray pipe can swing in a horizontal plane. 4 . 4. filter device according to claim 1, is characterized in that, described spray pipe assembly comprises forward spray pipe and reverse spray pipe that can select one to work, the shower head of this forward spray pipe and reverse spray pipe respectively face the stirring blades in different clockwise directions. 5 . The filtering device according to claim 4 , wherein a three-way ball valve is connected between the outlet end of the water pump, the forward jet pipe and the reverse jet pipe. 6 . 6 . The filtering device according to any one of claims 1 to 5 , further comprising a liquid outlet, and a three-way ball valve is communicated between the liquid outlet, the water outlet of the water pump and the spray pipe assembly. 7. The filter device according to claim 1, wherein the filter cartridge comprises a cylinder body and a cover sealed at the top of the cylinder body, The top end of the stirring blade is rotatably connected to the cover. 8 . The filter device according to claim 1 , wherein the spray head extends above the clean space and cooperates with the stirring blade protruding out of the clean space. 9 . The filtering device according to claim 1 , wherein the filter screen assembly comprises a mesh cylinder and a filter bag sheathed on the outside of the mesh cylinder. 10 . 10 . The filter device according to claim 1 , wherein a liquid inlet is provided on the filter cartridge, and the height of the liquid inlet is lower than the top edge of the purification space. 11 . 11 . The filter device according to claim 1 , wherein an annular support part protrudes from the inner wall surface of the filter cartridge, and the top end of the filter screen assembly is matched and supported on the support part. 12. A cutting fluid filtration system, comprising: The filter device according to any one of claims 1 to 11; Machining machine tools, including: Fluid storage tank for collecting cutting fluid; A lift pump is connected between the liquid storage tank and the liquid inlet of the filter device.