Anti-blocking nozzle device for cutting fluid used in machining and anti-blocking method thereof

Abstract

The application discloses a cutting fluid anti-blocking nozzle device and a cutting fluid anti-blocking method for machining, and the cutting fluid anti-blocking nozzle device comprises a joint mechanism, a filtering and discharging mechanism and a nozzle mechanism; one end of the joint mechanism is connected to a cutting fluid conveying device; the joint mechanism is arranged on the filtering and discharging mechanism, residues in the cutting fluid output by the joint mechanism are filtered through the filtering and discharging mechanism, and when the residues accumulate to a certain threshold value, the residues are discharged through the filtering and discharging mechanism; the nozzle mechanism is connected to the filtering and discharging mechanism, and the nozzle mechanism is used for outputting the cutting fluid filtered by the filtering and discharging mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a cutting fluid anti-blocking nozzle device for mechanical processing and an anti-blocking method thereof. BACKGROUND

[0002] Modern manufacturing is still dominated by mechanical processing, including turning, milling, etc. The parts processed by mechanical processing can be found everywhere in our life. When processing these parts, a large amount of heat will be generated by the cutting tool during cutting. Therefore, cutting fluid is needed to continuously spray the cutting tool to achieve the effect of cooling. In order to save costs and resources, the sprayed cutting fluid is recycled through the machine tool liquid circuit. Therefore, in this process, the residues generated by cutting will flow back into the pipeline along with the cutting fluid, causing blockage. The usual practice is to filter the residues in front of the circulating liquid pump to remove the cutting residues. However, some small residues often enter the liquid circuit through the filtering system. These residues are relatively small and generally do not cause blockage in the liquid circuit. However, these residues will accumulate at the end of the liquid circuit, i.e. the end of the liquid pipe outlet. After a certain period of time, the nozzle will be blocked, causing the cutting fluid to be sprayed with reduced flow or even unable to be sprayed. This requires manual disassembly of the nozzle for cleaning, which is time-consuming and labor-intensive. Moreover, this situation often occurs during the machining process of the machine tool, and the operator often cannot detect the blockage or handle it in time, causing damage to the cutting tool or workpiece.

[0003] Therefore, in order to solve the above-mentioned defects, it is urgent to develop a burr removal device and method for a machine tool used in mechanical processing to overcome the above-mentioned defects. SUMMARY

[0004] In view of the above problems, the present application provides a cutting fluid anti-blocking nozzle device for mechanical processing, which comprises:

[0005] A joint mechanism connected to a cutting fluid delivery device;

[0006] A filter and drainage mechanism, the joint mechanism is installed on the filter and drainage mechanism, the filter and drainage mechanism filters the residues in the cutting fluid output by the joint mechanism, and when the pressure in the filter and drainage mechanism exceeds a threshold value due to the accumulation of the residues, the filter and drainage mechanism discharges the residues;

[0007] A nozzle mechanism connected to the filter and drainage mechanism, the nozzle mechanism is used to output the cutting fluid filtered by the filter and drainage mechanism.

[0008] The cutting fluid anti-blocking nozzle device described above, wherein the joint mechanism comprises:

[0009] A connector has a liquid inlet at one end, the liquid inlet is communicated with the cutting fluid delivery device, and opposite sides of the outer wall of the connector are respectively provided with a first connecting key;

[0010] A liquid guide pipe is connected to the other end of the connector, the other end of the liquid guide pipe extends into the filtering and discharging mechanism and is communicated with the liquid inlet, and the unfiltered cutting fluid enters the filtering and discharging mechanism through the liquid inlet and the liquid guide pipe.

[0011] The cutting fluid anti-blocking spray head device described above, wherein the filtering and discharging mechanism comprises:

[0012] A discharging cover has a top wall and a side wall surrounding the top wall, an upper end surface of the top wall of the discharging cover is provided with a first connecting slot located at the first connecting key, the first connecting key is arranged in the first connecting slot, and two residual discharging openings are arranged on the side wall of the discharging cover in opposite positions;

[0013] A support assembly is arranged on the bottom of the side wall of the discharging cover to form a containing space;

[0014] A filtering assembly is arranged on the support assembly and located in the containing space, the other end of the liquid guide pipe has two discharging gaps arranged in opposite positions on the side wall, and the filtering assembly is used to close or open the discharging gaps.

[0015] The cutting fluid anti-blocking spray head device described above, wherein the support assembly comprises:

[0016] A first body comprises a bottom plate and a side plate protruding and surrounding the bottom plate, an upper end surface of the bottom plate is provided with a sink slot and guide slots located on both sides of the sink slot, the guide slots extend from the edge of the sink slot to the side plate, and the side plate is connected to the side wall of the discharging cover;

[0017] A second body is arranged on the lower end surface of the bottom plate, and the diameter of the second body is smaller than the diameter of the first body;

[0018] A third body is arranged on the lower end surface of the second body, the diameter of the third body is larger than the diameter of the second body and smaller than the diameter of the first body, and a key groove of the third body is connected to the spray head mechanism;

[0019] The first body, the second body and the third body have through holes that are communicated with each other and the other end of the liquid guide pipe.

[0020] The cutting fluid anti-blocking spray head device described above, wherein the filtering assembly comprises:

[0021] A filtering disc is arranged on the sink slot;

[0022] Two baffle plates are respectively arranged on the two discharge gaps;

[0023] Two elastic members are respectively connected to one end of the two baffle plates and connected to the inner side of the side wall of the discharge cover on the other end;

[0024] The bottom of each baffle plate is provided with a guide key arranged in the guide groove, and the baffle plate is driven by the elastic member to move along the direction of the guide groove to open or close the discharge gap.

[0025] The cutting fluid anti-blocking nozzle device, wherein the unfiltered cutting fluid is filtered by the filter disc, and the filtered cutting fluid is output by the nozzle mechanism through the filter disc; when the accumulated residue in the filter disc and the guide pipe causes the pressure in the guide pipe to exceed the threshold value, the two baffle plates are pushed outward to open the discharge gap, so that the residue is removed from the residue discharge port; after the residue is removed, the pressure in the guide pipe is reduced, and the elastic member pushes the baffle plate to move to the discharge gap to close the discharge gap.

[0026] The cutting fluid anti-blocking nozzle device, wherein the nozzle mechanism comprises:

[0027] The fourth body is recessed inward at the upper end surface to form a recess, and the side wall of the recess is provided with two second connecting keys opposite to each other; the side surface of the third body is provided with a second connecting groove corresponding to the second connecting keys; and the second connecting keys are clamped in the second connecting groove.

[0028] The fifth body is connected to the fourth body at one end surface and provided with a liquid outlet at the other end surface, through which the filtered cutting fluid is output.

[0029] The cutting fluid anti-blocking method for machining, wherein the method comprises:

[0030] The cutting fluid input step: receiving the unfiltered cutting fluid output by the cutting fluid conveying device through the joint mechanism;

[0031] The cutting fluid filtering step: filtering the residue in the cutting fluid output by the joint mechanism through the filter discharge mechanism;

[0032] The residue removal step: when the residue accumulates and the pressure in the filter discharge mechanism exceeds a threshold value;

[0033] The cutting fluid output step: outputting the filtered cutting fluid through the nozzle mechanism.

[0034] The cutting fluid anti-blocking method, wherein the cutting fluid filtering step comprises:

[0035] The filter assembly of the filter discharge mechanism seals the discharge gap of the liquid guide pipe of the joint mechanism;

[0036] The cutting fluid in the liquid guide pipe is filtered by the filter assembly, and the filtered cutting fluid is output to the spray head mechanism.

[0037] The cutting fluid anti-blocking method, wherein the residue removing step comprises:

[0038] When the filtered residue accumulates in the filter disc of the filter assembly and the liquid guide pipe, and the pressure in the liquid guide pipe exceeds the threshold value, the two baffles of the filter assembly are pushed to move outward to open the discharge gap, and the residue is removed from the two residue discharge ports of the discharge cover; after the residue is removed, the pressure in the liquid guide pipe is reduced, and the elastic member of the filter assembly pushes the baffles to move to the discharge gap to close the discharge gap.

[0039] The present application has the following advantages over the prior art: the present application can completely solve the problem of spray head blockage caused by incomplete filtration in the cutting fluid circuit of a machine tool, and is stable, reliable, simple, fast, and low in cost; meanwhile, the present application extends the pre-filtering of the machine tool cutting fluid to the post-filtering at the end, and the method is unique and the idea is novel.

[0040] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by means of the structures set forth in the description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] 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 needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0042] Figure 1 It is a schematic diagram of the overall structure of the cutting fluid anti-blocking spray head device of the present application;

[0043] Figure 2 It is a sectional view of Figure 1

[0044] Figure 3 It is a schematic diagram of the structure of the joint mechanism and the discharge cover;

[0045] ​Figure 4 Structure diagram of the support assembly and the filter assembly;

[0046] Figure 5 Structure diagram of the nozzle mechanism;

[0047] Figure 6 Installation diagram of the joint mechanism and the filter drainage mechanism;

[0048] Figure 7 State diagram of the drainage gap being closed;

[0049] Figure 8 State diagram of the drainage gap being opened;

[0050] Figure 9 Flowchart of the cutting fluid anti-blocking method of the present application. DETAILED DESCRIPTION

[0051] In order to make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0052] The illustrative embodiments of the present application and their descriptions are used to explain the present application, but are not used as limitations of the present application. In addition, the same or similar elements / components in the drawings and embodiments are used to represent the same or similar parts.

[0053] As for the "first", "second", "S1", "S2", and the like used herein, they are not intended to particularly indicate the order or sequence, nor are used to limit the present application. They are only used to distinguish the elements or operations described by the same technical terms.

[0054] As for the directional terms used herein, such as "up", "down", "left", "right", "front", or "back", they are only the directions of the drawings. Therefore, the directional terms used are used to explain, not to limit the present application.

[0055] As for the "include", "comprise", "have", "contain", and the like used herein, they are all open terms, that is, they mean to include but are not limited to.

[0056] As for the "and / or" used herein, it includes any or all combinations of the described things.

[0057] As for the "multiple" herein, it includes "two" and "more than two"; as for the "multiple groups" herein, it includes "two groups" and "more than two groups".

[0058] Certain terms used to describe this application will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the application.

[0059] Please see Figures 1-2 , Figure 1 This is a schematic diagram of the overall structure of the cutting fluid anti-clogging nozzle device of the present invention; Figure 2 for Figure 1 A sectional view. For example... Figures 1-2 As shown, a cutting fluid anti-clogging nozzle device for machining according to the present invention includes: a connector mechanism 1, a filter and discharge mechanism 2, and a nozzle mechanism 3; the connector mechanism 1 is connected to a cutting fluid delivery device; the connector mechanism 1 is installed on the filter and discharge mechanism 2, and the filter and discharge mechanism 2 filters the residue in the cutting fluid output by the connector mechanism 1, and when the residue accumulates to the point that the pressure in the filter and discharge mechanism exceeds a threshold, the residue is discharged through the filter and discharge mechanism 2; the nozzle mechanism 3 is connected to the filter and discharge mechanism 2, and the nozzle mechanism 3 is used to output the cutting fluid filtered by the filter and discharge mechanism 2.

[0060] This invention solves the problem of cutting residue from machining flowing back into the pipeline with the cutting fluid, causing blockages. The usual practice is to filter the fluid before the circulating pump to remove cutting residue. However, some small residues often enter the liquid circuit through the filtration system. These residues are small and generally do not cause blockages in the liquid circuit, but they accumulate at the end of the liquid circuit, i.e., the outlet of the terminal liquid pipe. After a certain period of time, they will block the nozzle, causing a reduction in the flow rate of cutting fluid or even no cutting fluid to be sprayed. This requires manual disassembly of the nozzle to clean it, which is time-consuming and laborious. Moreover, this situation often occurs during the machining process of the machine tool, and people often cannot detect the blockage or deal with it in time, resulting in damage to the tool or workpiece.

[0061] Please refer to Figure 3 , Figure 3 This is a structural diagram of the connector mechanism and the drain cover. Figure 3 As shown, the connector mechanism 1 includes: a connector 11 and a liquid guide tube 12. One end of the connector 11 has a liquid inlet K1, which is connected to the cutting fluid delivery device. The outer walls of the connector 11 are respectively provided with first connecting keys 111 protruding from opposite sides. One end of the liquid guide tube 12 is connected to the other end of the connector 11, and the other end of the liquid guide tube 12 extends into the filtration and discharge mechanism 2 and is connected to the liquid inlet K1. The unfiltered cutting fluid enters the filtration and discharge mechanism 2 through the liquid inlet K1 and the liquid guide tube 12.

[0062] The filtering and excretion mechanism 2 includes: an excretion cover 21 and a support assembly 22 (see...). Figure 3 ) and filter assembly 23 (see Figure 4 The drain cover 21 has a top wall 211 and a side wall 212 surrounding the top wall 211. The upper end face of the top wall 211 of the drain cover 21 has a first connecting groove C1 located opposite to the first connecting key 111. The first connecting key 111 is installed in the first connecting groove C1. The side wall 212 of the drain cover 21 has two oppositely arranged residue discharge ports K2. The support assembly 22 is installed on the bottom of the side wall 212 of the drain cover 21 to form an accommodating space R. The filter assembly 23 is installed on the support assembly 22 and located in the accommodating space R. The other end of the liquid guide tube 12 has two oppositely arranged discharge notches K3 on its side wall. The filter assembly 23 is used to close or open the discharge notches K3.

[0063] Specifically, the bottom of the drain cover 21 is provided with a threaded hole K4; the upper end face of the top wall 211 is provided with a first connecting groove C1, wherein in this embodiment, it is preferred that the first connecting groove C1 is rectangular, and a threaded hole K5 is provided in the first connecting groove C1; wherein, in this embodiment, the upper end face of the top wall 211 is also provided with two arc-shaped relief grooves C2, and the two ends of the arc-shaped relief grooves C2 are respectively connected to the two first connecting grooves C1, the lower end face of the connector 11 is fitted to the bottom surface of the arc-shaped relief grooves C2, and a first connecting key 111 protruding from the side wall of the other end of the connector 11 is located in the first connecting groove C1. The upper end face is flush with the upper end face of the top wall 211; a countersunk hole K6 is provided on the first connecting key 111, and a connecting screw 13 is passed through the countersunk hole K6 and the threaded hole K5 to install the connector mechanism 1 on the drain cover 21; an installation hole K7 is provided in the middle of the drain cover 21, and a liquid guide tube 12 is installed on the installation hole K7, with the upper end face of the liquid guide tube 12 connected to part of the lower end face of the connector 11. The upper end face of the liquid guide tube 12 is flush with the bottom surface of the first connecting groove C1 and the arc-shaped clearance groove C2. The other end of the liquid guide tube 12 has two oppositely arranged drain notches K3 on its side wall. In this embodiment, it is preferred that the drain notches K3 are rectangular.

[0064] It should be noted that, in this embodiment, the connector 11 and the liquid guide tube 12 are an integral part, while in other embodiments of the present invention, the connector 11 and the liquid guide tube 12 may also be separate parts.

[0065] Please refer to Figure 4 and Figure 6 , Figure 4 A structural diagram of the supporting components and the filter components; Figure 6 This is a schematic diagram showing the installation of the connector mechanism and the filter discharge mechanism. Figure 4and Figure 6 As shown, the support assembly 22 comprises a first body 221, a second body 222 and a third body 223, the first body 221 comprises a bottom plate 2211 and a protruding and surrounding side plate 2212 connected to the bottom plate 2211, an upper end surface of the bottom plate 2211 is provided with a sunken disc groove C3 and guide grooves C4 located on both sides of the sunken disc groove C3, the guide grooves C4 extend from the edge of the sunken disc groove C3 to the side plate 2212, and the side plate 2212 is connected to the side wall of the discharge cover 21; the second body 222 is arranged on the lower end surface of the bottom plate 2212, and the diameter of the second body 222 is smaller than that of the first body 221; the third body 223 is arranged on the lower end surface of the second body 222, the diameter of the third body 223 is greater than that of the second body 222 and smaller than that of the first body 221, and the third body 223 is key groove connected to the shower head mechanism 3; wherein the first body 221, the second body 222 and the third body 223 have a through hole K8 in communication with each other and the other end of the liquid guide pipe 12.

[0066] Specifically, the upper end surface of the first body 221 is a circular sunken disc structure having a bottom plate 2211 and a side plate 2212, the bottom plate 2211 and the side plate 2212 surround the top wall 211 and the side wall 212 of the discharge cover 21 to form a containing space R, the filter assembly 23 is arranged in the containing space R, and the containing space R is in communication with the outside through the residue discharge port K2; the bottom plate 2211 is provided with a circular sunken disc groove C3 in the middle, the sunken disc groove C3 surrounds the through hole K8, and the sunken disc groove C3 is used for placing the filter disc 231; the bottom of the side plate 2212 is provided with uniformly distributed sunken holes K9, and the discharge cover 21 and the support assembly are connected by connecting screws 224 penetrating the sunken holes K9 and the threaded holes K4; the side surface of the third body 223 is provided with a plurality of rectangular second connecting grooves C5 at intervals.

[0067] In this embodiment, the first body 221, the second body 222 and the third body 223 are integral parts, and in other embodiments of the present application, the first body 221, the second body 222 and the third body 223 can also be separate parts.

[0068] Further, the filter assembly 23 comprises a filter disc 231, two baffle plates 232, and two elastic members 233. The filter disc 231 is arranged on the sink groove C3 and covers the through hole K8. The baffle plates 232 are arranged on the two drain notches K3. In this embodiment, the baffle plates 232 are embedded on the drain notches K3. One end of each of the elastic members 233 is connected to the baffle plates 232, and the other end is connected to the inner side of the side wall 212 of the drain cover 21. In this embodiment, the threshold is the stiffness coefficient of the elastic members 233. The bottom of each baffle plate 232 is provided with a guide key 2321 arranged in the guide groove C4. The baffle plates 232 are driven by the elastic members 233 to move along the direction of the guide groove C4, so as to open or close the drain notches K3.

[0069] In this embodiment, the elastic members 233 are preferably compression springs.

[0070] Specifically, the side surface of the baffle plate 232 is provided with a boss 2322, and the elastic member 233 is sleeved on the boss 2322. One end of the elastic member 233 abuts against the side surface of the baffle plate 232, and the other end is connected to the inner side of the side wall 212 of the drain cover 21. The bottom surface of the baffle plate 232 is provided with a guide key 2321 which can slide in the guide groove C4.

[0071] Please refer to Figures 7-8 , Figure 7 for the closed state of the drain notches; Figure 8 for the open state of the drain notches. As shown in Figures 7-8 , the unfiltered cutting fluid is filtered by the filter disc 231, and the filtered cutting fluid enters the spray head mechanism 3 through the filter disc 231 and the through hole K8. When the pressure in the guide tube 12 increases to exceed a threshold value due to the accumulation of filtered residues on the filter disc 231 and in the guide tube 12, the two baffle plates 232 are pushed outward to open the drain notches K3, so that the residues are discharged from the residue discharge port K2 through the unfiltered cutting fluid. After the residues are removed, the pressure in the guide tube 12 decreases, and the elastic members 233 push the baffle plates 232 to move towards the drain notches K3 to close the drain notches K3, and the cutting fluid continues to flow out.

[0072] Please refer to Figure 5 , Figure 5 for the structure of the spray head mechanism. As shown in Figure 5As shown, the spray head mechanism 3 comprises a fourth body 31 and a fifth body 32, a portion of the upper end face of the fourth body 31 is inwardly recessed to form a recess 311, the side wall of the recess 311 is oppositely provided with two second connecting keys 312, the side face of the third body 223 is provided with a second connecting groove C5 located at the second connecting keys 312, and the second connecting keys 312 are clamped in the second connecting groove C5; the fifth body 32 is tapered, one end face thereof is connected to the fourth body 31, and the other end face is provided with a liquid outlet K10 through which the filtered cutting fluid is output.

[0073] Specifically, the upper end face of the fourth body 31 is circular and is provided with the recess 311, the inner side face of the recess 311 is provided with the two rectangular second connecting keys 312, the other end face of the fifth body 32 is provided with the liquid outlet K10 which is communicated with the through hole K8 through the fourth body 31, the outer side faces of the fourth body 31, the first body 221 and the discharge cover 21 are flush, and the second body 222 and the third body 223 are located in the fourth body 31.

[0074] In this embodiment, the fourth body 31 and the fifth body 32 are integrated, and in other embodiments of the present application, the fourth body 31 and the fifth body 32 can also be separate.

[0075] Please refer to Figure 9 , Figure 9 The flow chart of the cutting fluid anti-blocking method of the present application. As shown in the figure, Figure 9 The cutting fluid anti-blocking method for machining of the present application comprises:

[0076] The cutting fluid input step S1: receiving the unfiltered cutting fluid output by the joint mechanism through the cutting fluid conveying device;

[0077] The cutting fluid filtering step S2: filtering the residues in the cutting fluid output by the joint mechanism through the filtering and discharging mechanism;

[0078] The residue removal step S3: when the pressure in the filtering and discharging mechanism exceeds a threshold value due to the accumulation of the residues, discharging the residues through the filtering and discharging mechanism;

[0079] The cutting fluid output step S4: outputting the filtered cutting fluid through the spray head mechanism.

[0080] Further, the cutting fluid filtering step S2 comprises:

[0081] Sealing the discharge gap of the liquid guide pipe of the joint mechanism through the filtering assembly of the filtering and discharging mechanism;

[0082] The filtered cutting fluid in the guide pipe is filtered by the filter assembly and then output to the spray head mechanism.

[0083] Further, the residue removing step S3 comprises:

[0084] When the filtered residue accumulates in the filter disc of the filter assembly and the guide pipe, and the pressure in the guide pipe exceeds the threshold, two baffle plates of the filter assembly move outward to open the discharge gap, and the residue is removed from two residue discharge ports of the discharge cover; after the residue is removed, the pressure in the guide pipe decreases, and the elastic member of the filter assembly pushes the baffle plates to move to the discharge gap to close the discharge gap.

[0085] In summary, the present application can completely solve the problem of clogging of the spray head caused by incomplete filtration in the machine tool cutting fluid circuit, and is stable, reliable, simple, fast, and low in cost; at the same time, the present application extends from the front filtration of the machine tool cutting fluid to the rear end filtration, and the method is unique and the idea is novel.

[0086] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cutting fluid anti-clogging nozzle device for machining, characterized by, The application relates to a cutting fluid anti-blocking nozzle device. The device comprises a joint mechanism connected to a cutting fluid conveying device; a filter and discharge mechanism, wherein the joint mechanism is arranged on the filter and discharge mechanism, the filter and discharge mechanism filters residues in the cutting fluid output by the joint mechanism, and the filter and discharge mechanism discharges the residues when the pressure in the filter and discharge mechanism exceeds a threshold value due to accumulation of the residues; and a nozzle mechanism connected to the filter and discharge mechanism, wherein the nozzle mechanism is used to output the cutting fluid filtered by the filter and discharge mechanism. The joint mechanism comprises a joint head with an inlet at one end; and a liquid guide pipe connected to the other end of the joint head, wherein the other end of the liquid guide pipe extends into the filter and discharge mechanism and is connected to the inlet. The filter and discharge mechanism comprises a discharge cover with a top wall and a side wall surrounding the top wall; a support assembly arranged on the bottom of the side wall of the discharge cover to form a containing space; and a filter assembly arranged on the support assembly and located in the containing space, wherein the other end of the liquid guide pipe has two discharge gaps arranged oppositely on the side wall, and the filter assembly is used to close or open the discharge gaps. The support assembly comprises a first body including a bottom plate and a side plate protruding and surrounding the bottom plate, wherein the upper end surface of the bottom plate is provided with a sink groove and guide grooves located on both sides of the sink groove, the guide grooves extend from the edge of the sink groove to the side plate, and the side plate is connected to the side wall of the discharge cover. The filter assembly comprises a filter disc arranged on the sink groove; two baffle plates arranged on the two discharge gaps respectively; and two elastic members with one end connected to the two baffle plates respectively and the other end connected to the inner side of the side wall of the discharge cover. Each baffle plate is provided with a guide key arranged in the guide groove, and the baffle plate is driven to move along the direction of the guide groove by the elastic member to open or close the discharge gap. After the unfiltered cutting fluid is filtered by the filter disc, the filtered cutting fluid enters the nozzle mechanism through the filter disc for output; when the pressure in the liquid guide pipe exceeds the threshold value due to accumulation of the filtered residues in the filter disc and the liquid guide pipe, the two baffle plates are pushed to move outward to open the discharge gaps so as to remove the residues from the residue discharge port; and when the residues are removed, the pressure in the liquid guide pipe is reduced, the elastic member pushes the baffle plate to move to the discharge gap to close the discharge gap.

2. The cutting fluid anti-blocking nozzle device according to claim 1, wherein the inlet is connected to the cutting fluid conveying device, and the opposite sides of the outer wall of the joint head are respectively provided with first connecting keys protruding outward; the other end of the liquid guide pipe extends into the filter and discharge mechanism and is connected to the inlet, and the unfiltered cutting fluid enters the filter and discharge mechanism through the inlet and the liquid guide pipe.

3. The cutting fluid anti-blocking nozzle device according to claim 2, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ An upper end surface of a top wall of the discharge cover is provided with a first connecting slot in which a first connecting key is arranged.

4. The cutting fluid anti-clogging shower head assembly of claim 3, wherein, The support assembly further comprises: A second body arranged on a lower end surface of the bottom plate, the diameter of the second body being smaller than that of the first body; A third body arranged on a lower end surface of the second body, the diameter of the third body being larger than that of the second body and smaller than that of the first body, and the third body being connected to the spray head mechanism through a key slot; The first body, the second body and the third body have a through hole which is in communication with each other and with the other end of the liquid guide pipe.

5. The cutting fluid anti-clogging shower head assembly of claim 4, wherein, The spray head mechanism comprises: A fourth body, an upper end surface of which is inwardly recessed to form a recess, and the side wall of the recess is provided with two second connecting keys, and the side surface of the third body is provided with a second connecting slot in which the second connecting key is arranged; A fifth body, one end surface of which is connected to the fourth body, and the other end surface of which is provided with a liquid outlet through which the filtered cutting fluid is output.

6. A method for preventing clogging of a cutting fluid for machining, characterized by, The cutting fluid anti-blocking method applied to the cutting fluid anti-blocking spray head device of any one of claims 1-5, the cutting fluid anti-blocking method comprising: A cutting fluid input step: receiving the unfiltered cutting fluid output by the cutting fluid conveying device through the joint mechanism; A cutting fluid filtering step: filtering the residual in the cutting fluid output by the joint mechanism through the filtering and discharging mechanism; A residual removal step: when the residual accumulation causes the pressure in the filtering and discharging mechanism to exceed a threshold value, the residual is discharged through the filtering and discharging mechanism; A cutting fluid output step: outputting the filtered cutting fluid through the spray head mechanism.

7. The cutting fluid clogging prevention method according to claim 6, characterized by, The cutting fluid filtering step comprises: The filtering assembly of the filtering and discharging mechanism closes the discharge gap of the liquid guide pipe of the joint mechanism; The filtering assembly filters the cutting fluid in the liquid guide pipe and then outputs the filtered cutting fluid to the spray head mechanism.

8. The cutting fluid clogging prevention method according to claim 7, characterized by, The residual removal step comprises: When the filtered residual accumulates in the filter disc of the filtering assembly and the liquid guide pipe, causing the pressure in the liquid guide pipe to exceed the threshold value, the two baffles of the filtering assembly are pushed outward to open the discharge gap, and the residual is removed from the two residual discharge ports of the discharge cover; after the residual is removed, the pressure in the liquid guide pipe decreases, and the elastic member of the filtering assembly pushes the baffles to move to the discharge gap to close the discharge gap.

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