Cutting fluid sprayer

Abstract

The invention relates to the technical field of nozzles, and particularly provides a cutting fluid nozzle capable of automatically replacing a mixing pipeline. The cutting fluid spray head comprises a spray head main body, a nozzle, a fluid mixing mechanism and a control system, the liquid mixing mechanism comprises a turntable and a liquid mixing pipeline; the control system comprises a motor, a hydraulic sensor and a controller. At least two liquid mixing pipelines which can rotate to a communicating station along with the rotating disc are arranged on the rotating disc, so that a redundant liquid mixing path is added for the cutting fluid nozzle; when the hydraulic sensor detects that the hydraulic pressure of the channel exceeds a preset threshold value, the controller controls the motor to drive the rotating disc to rotate, so that the blocked liquid mixing pipeline is replaced with other liquid mixing pipelines, the purpose of automatically replacing the liquid mixing pipelines is achieved, and it is ensured that the spray head can continuously spray cooling liquid meeting the machining requirement; the maintenance efficiency is improved, the maintenance cost is reduced, the service life of the spray head is prolonged, shutdown loss can be reduced, and production continuity and stability can be guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spray heads, and particularly relates to a cutting fluid spray head. BACKGROUND

[0002] The cutting fluid spray head is a key component for directional spraying of cutting fluid in a machining system, which can accurately control the kinetic parameters of fluid, such as flow rate, flow, spraying angle and coverage range, and spray the cutting fluid to the contact area between the tool and the workpiece to achieve the purpose of cooling, lubrication, chip removal and reducing the thermal coupling effect of machining. In today's machining system, a mixture of multiple cutting fluids needs to be used during cutting to achieve better results, but the existing cutting fluid spray heads mostly lack mixing function and can only spray a single cutting fluid. Secondly, in some machining scenarios, the sprayed cutting fluid needs to be in an atomized state, but the atomization effect of the existing cutting fluid spray heads is not good. In addition, the existing cutting fluid spray heads generally lack effective handling mechanisms for pipe blockage.

[0003] In order to realize the mixing function of cutting fluid, a Chinese utility model patent with the publication number CN214599848U discloses a cutting fluid online mixing nozzle based on micro-lubrication, which includes a liquid suction section. The liquid suction section is a Venturi structure, and from left to right, it is a water inlet, a cutting fluid stock solution inlet and an air inlet. When the water pumped from the water inlet passes through the preliminary mixing chamber, the Venturi effect is generated, which has the effect of sucking the cutting fluid. In addition, the external cutting fluid pump also has the effect of mixing the water and the cutting fluid in the preliminary mixing chamber. The mixed solution flows into the mixing pipe under the action of the liquid pump and is mixed for the second time under the action of the air guide vane in the gas part, so that the mixing is more uniform. After the mixed solution flows to the outlet of the mixing pipe, it will break into droplets under the action of pressure, form water mist, and collide with the air sprayed from the air outlet, for the second time of atomization, so that the droplets are smaller and more uniform. Finally, the water mist is sprayed from the oil mist outlet under the action of pressure and is sprayed to the machining area under the constraint of the air cover.

[0004] Although the above-mentioned nozzle realizes the function of online mixing of cutting fluid stock solution and water, once the mixing pipe is blocked, the whole cooling system will fail, and usually only maintenance can be carried out. After the mixing pipe is cleaned or a new mixing pipe is replaced, the nozzle can continue to be used. However, the maintenance efficiency is low, the maintenance cost is high, and the efficiency and continuity of production and processing are reduced. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a cutting fluid spray head capable of automatically replacing the mixing pipe.

[0006] The technical solution adopted by the present application to solve the technical problem is: a cutting fluid spray head, comprising a spray head body and a nozzle arranged at the front end of the spray head body, and further comprising a mixing mechanism and a control system.

[0007] The inside of the spray head body is provided with a containing cavity, and a mixed liquid inlet and a to-be-mixed liquid outlet are respectively arranged on the front cavity wall and the rear cavity wall of the containing cavity; the inside of the spray head body is further provided with a liquid outlet channel for connecting the mixed liquid inlet and the nozzle, and a first liquid inlet channel and a second liquid inlet channel connected with the to-be-mixed liquid outlet respectively;

[0008] The mixed liquid mechanism comprises a rotating disc rotatably arranged in the containing cavity, and at least two mixed liquid pipelines are arranged on the rotating disc, and any one of the mixed liquid pipelines can be rotated to a communication station along with the rotating disc, and the communication station is a position at which the mixed liquid pipeline connects the mixed liquid inlet and the to-be-mixed liquid outlet;

[0009] The control system comprises a motor, a liquid pressure sensor and a controller; the motor is arranged in the spray head body and is in transmission connection with the rotating disc; the liquid pressure sensor is arranged in the first liquid inlet channel or the second liquid inlet channel and is used for detecting the channel liquid pressure; and the controller is in communication connection with the motor and the liquid pressure sensor respectively, and is used for controlling the motor to drive the rotating disc to rotate when the channel liquid pressure detected by the liquid pressure sensor exceeds a preset threshold value, so as to switch the mixed liquid pipeline at the communication station.

[0010] Further, the mixed liquid pipeline comprises a pipeline body and a mixed liquid flow guide plate arranged in the pipeline body, and the mixed liquid flow guide plate is composed of a plurality of positive helical plates and a plurality of reverse helical plates which are alternately arranged along the axial direction of the pipeline body.

[0011] Further, the mixed liquid pipeline is two, and is symmetrically distributed along the rotation axis of the rotating disc.

[0012] Further, an active limiting structure is arranged between the rotating disc and the cavity wall of the containing cavity, and is used for limiting the rotation of the rotating disc when the motor does not drive the rotating disc.

[0013] Further, the active limiting structure comprises a ratchet structure, a pawl and an elastic member;

[0014] The ratchet structure is arranged on the rotating disc;

[0015] The pawl is pivoted to the cavity wall of the containing cavity and is in engagement with the ratchet structure;

[0016] The elastic member is connected with the cavity wall of the containing cavity and the pawl and is in a pre-tightening state, so as to apply a pre-tightening force to the pawl towards the ratchet structure.

[0017] Further, the nozzle is an atomizing nozzle;

[0018] The inside of the spray head body is further provided with a gas channel connected with the nozzle.

[0019] Further, the front cavity wall and the rear cavity wall of the accommodating cavity are respectively provided with a cleaning gas supply port and a sewage discharge port; the inside of the spray head body is further provided with a cleaning gas inlet channel which is in communication with the cleaning gas supply port and the gas channel, and a sewage discharge channel which is connected with the sewage discharge port; the sewage discharge channel is provided with an opening and closing structure;

[0020] Any one of the mixed liquid pipes can be rotated to the cleaning station along with the rotating disc, and the cleaning station is a position at which the mixed liquid pipe is connected with the cleaning gas supply port and the sewage discharge port;

[0021] The controller is further used for controlling the motor to drive the rotating disc to rotate, so that the mixed liquid pipe replaced by the connecting station is rotated to the cleaning station.

[0022] Further, the front cavity wall and / or the rear cavity wall of the accommodating cavity is rotatably provided with a sealing sheet, and the sealing sheet is used for shielding all the openings on the cavity wall during the switching of the mixed liquid pipe;

[0023] The end of the mixed liquid pipe is arranged through the sealing sheet.

[0024] Further, the nozzle comprises a nozzle body arranged at the front end of the spray head body, an atomizing seat arranged at the front end of the nozzle body, and an atomizing cover which is arranged on the atomizing seat and is threadedly connected with the atomizing seat;

[0025] The inside of the nozzle body is provided with a spray head liquid inlet channel which is in communication with the liquid outlet channel, and a spray head gas inlet channel which is in communication with the gas channel;

[0026] The atomizing cover and the atomizing seat form a gas-liquid mixing cavity therebetween, and the size of the gas-liquid mixing cavity can be adjusted by screwing the atomizing cover;

[0027] The inside of the atomizing seat is provided with an atomizing liquid inlet channel which is in communication with the gas-liquid mixing cavity along the axial direction of the atomizing seat, and the atomizing seat is further provided with an atomizing gas inlet channel which is in communication with the gas-liquid mixing cavity;

[0028] The central part of the atomizing cover is provided with an atomizing nozzle which is in communication with the gas-liquid mixing cavity.

[0029] Further, the atomizing gas inlet channel is at least two, and the gas outlet ends of each atomizing gas inlet channel are uniformly distributed around the axial line of the atomizing seat.

[0030] The beneficial effects of the present application are as follows:

[0031] (1) By setting at least two mixed liquid pipelines on the rotating disc which can rotate to the communication work position, the redundancy mixed liquid path is added for the cutting fluid nozzle; when the hydraulic sensor detects that the channel hydraulic pressure of the first liquid inlet channel or the second liquid inlet channel exceeds the preset threshold value, it indicates that the mixed liquid pipeline at the communication work position is blocked, at this time the controller controls the motor to drive the rotating disc to rotate, so as to switch the mixed liquid pipeline at the communication work position, realize the purpose of automatically replacing the mixed pipeline, and ensure that the nozzle can continuously spray the cooling liquid meeting the processing requirements; not only improve the maintenance efficiency, reduce the maintenance cost, prolong the service life of the nozzle, but also can reduce the loss of shutdown, and is beneficial to ensure the continuity and stability of production.

[0032] (2) The mixed liquid guide plate composed of a plurality of positive spiral plates and a plurality of reverse spiral plates alternately arranged along the axial direction of the pipeline main body not only has simple structure and low manufacturing cost, but also can repeatedly disturb the fluid flow state when the cutting fluid to be mixed flows through the mixed liquid pipeline, so that the cutting fluid to be mixed is fully dispersed and uniformly mixed, and the cooling and lubricating performance of the mixed cutting fluid is improved.

[0033] (3) By setting a cleaning gas inlet channel connecting the cleaning gas inlet and the gas channel in the nozzle main body, and a sewage discharge channel connected with the sewage discharge port, a self-cleaning path is added for the cutting fluid nozzle; when it is necessary to dredge the blocked mixed liquid pipeline, the motor is driven by the controller to rotate the rotating disc, so that the blocked mixed liquid pipeline is rotated to the cleaning work position, then the gas outlet of the nozzle is closed, the opening and closing structure on the sewage discharge channel is opened, and high-pressure gas is introduced into the gas channel, so that the high-pressure gas flows along the path of "gas channel→cleaning gas inlet channel→blocked mixed liquid pipeline→sewage discharge channel". When the high-pressure gas flows through the blocked mixed liquid pipeline, it is backblown, which can blow away the residues causing the blockage in the mixed liquid pipeline, so that the mixed liquid pipeline can be used again, thereby reducing the frequency of disassembling and maintaining the nozzle, and further prolonging the service life of the nozzle.

[0034] (4) The nozzle is mainly composed of a nozzle main body, an atomizing seat and an atomizing cover. By screwing the atomizing cover, the size of the gas-liquid mixing chamber can be adjusted, which is beneficial to flexibly adjust and control the atomizing effect according to the actual processing requirements, so as to adapt to the differentiated requirements of different materials and cutting conditions for the spraying state.

[0035] The other technical features of the present application bring or directly produce the technical effects, which will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a three-dimensional structure schematic diagram of the present application;

[0037] Figure 2 is a cross-sectional view of the present application;

[0038] Figure 3 is a sectional view along Figure 2 A-A line in the figure;

[0039] Figure 4 is a sectional view of the nozzle in the application;

[0040] In the figure, the marks are: 100 - the nozzle body, 110 - the accommodating cavity, 111 - the mixed liquid inlet, 112 - the outlet of the liquid to be mixed, 113 - the cleaning gas inlet, 114 - the sewage outlet, 120 - the liquid outlet channel, 130 - the first liquid inlet channel, 140 - the second liquid inlet channel, 150 - the gas channel, 160 - the cleaning gas inlet channel, 170 - the sewage channel, 200 - the nozzle, 210 - the nozzle body, 211 - the nozzle liquid inlet channel, 212 - the nozzle gas inlet channel, 220 - the atomization seat, 221 - the atomization liquid inlet channel, 222 - the atomization gas inlet channel, 230 - the atomization cover, 231 - the atomization nozzle, 310 - the rotating disc, 320 - the mixed liquid pipeline, 321 - the mixed liquid guide plate, 330 - the motor, 340 - the hydraulic sensor, 350 - the sealing sheet, 361 - the ratchet structure, 362 - the pawl, 363 - the elastic member. DETAILED DESCRIPTION

[0041] The application will be further described below in conjunction with the drawings and examples. The same reference signs in the drawings represent functionally identical or similar parts. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0042] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position, dimensional relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0043] The term "plurality" when used in reference to an amount means three or more, e.g., "plurality of" typically means three or more. The term "transmission connection" refers to a connection in a mechanical system used to transmit power or motion, e.g., a direct connection, or a connection through a transmission mechanism such as a coupling, a reducer, a gear assembly, a worm and gear assembly, etc. The term "rotatably disposed or connected" refers to a connection between two parts such that one part can rotate relative to the other; such a connection is typically achieved using bearings, bushings, shaft hole fits, etc. The term "high pressure gas" refers to a gas having a pressure higher than the ambient atmospheric pressure. The expression "consisting essentially of or "consisting of means that the stated composition can contain additional components not specified in the sentence. The term "and / or" is merely a descriptive association of associated objects, which means that there can be three relationships, e.g., A and / or B, which means that there can be three cases: A alone, A and B together, and B alone. The term "communication connection" refers to the interaction between connected devices through signal transmission, which can be divided into wired connection and wireless connection; wired connection is usually cable, optical fiber, etc. connection; wireless connection is usually radio communication, Bluetooth, infrared, NFC, etc. connection. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In combination Figure 1 And Figure 2 As shown in the figure, the cutting fluid spray head includes a spray head body 100 and a nozzle 200 arranged at the front end of the spray head body 100, and further includes a mixing mechanism and a control system.

[0045] The inside of the spray head body 100 is provided with a containing cavity 110, and the front cavity wall and the rear cavity wall of the containing cavity 110 are respectively provided with a mixed liquid inlet 111 and a to-be-mixed liquid outlet 112; the inside of the spray head body 100 is further provided with a liquid outlet channel 120 connecting the mixed liquid inlet 111 with the nozzle 200, and a first liquid inlet channel 130 and a second liquid inlet channel 140 respectively connected with the to-be-mixed liquid outlet 112; the first liquid inlet channel 130 and the second liquid inlet channel 140 are respectively used for the liquid inlet of the first to-be-mixed liquid (such as cutting fluid stock solution) and the second to-be-mixed liquid (such as water), and the liquid inlets of the two are respectively arranged on the surface of the spray head body 100, and are preferably arranged on the rear end surface of the spray head body 100, so as to be connected with the cooling system;

[0046] The mixing mechanism comprises a rotating disc 310 rotatably arranged in the accommodating cavity 110, and at least two mixing pipes 320 are arranged on the rotating disc 310, and any one of the mixing pipes 320 can be rotated to a communication position with the rotating disc 310, and the communication position is a position at which the mixing pipe 320 communicates the mixed liquid inlet 111 with the to-be-mixed liquid outlet 112; in normal use, one of the mixing pipes 320 is in the communication position, and the remaining mixing pipes 320 are in standby, thereby providing a redundant mixed liquid path for the cutting fluid nozzle; the mixing pipe 320 can be a straight pipe, an elbow pipe or a pipe with other shapes, as long as the front and rear pipe openings of the mixing pipe 320 can be connected with the mixed liquid inlet 111 and the to-be-mixed liquid outlet 112 when the mixing pipe 320 is rotated to the communication position; when the mixing pipe 320 is a straight pipe, the position of the mixing pipe 320 on the rotating disc 310 should satisfy that the distances between the axial lines of the mixing pipes 320 and the rotating axis of the rotating disc 310 are equal;

[0047] The control system comprises a motor 330, a hydraulic sensor 340 and a controller; the motor 330 is arranged in the nozzle body 100 and is in transmission connection with the rotating disc 310; the motor 330 can be multiple, and is preferably a stepping motor or a servo motor; the hydraulic sensor 340 is arranged in the first liquid inlet channel 130 or the second liquid inlet channel 140 and is used for detecting the channel hydraulic pressure; the hydraulic sensor 340 is a device for converting liquid pressure into a standard electrical signal, and when arranged, can be directly installed in the first liquid inlet channel 130 or the second liquid inlet channel 140, or only the contact part can be arranged in the first liquid inlet channel 130 or the second liquid inlet channel 140; the controller is in communication connection with the motor 330 and the hydraulic sensor 340, and is used for controlling the motor 330 to drive the rotating disc 310 to rotate when the channel hydraulic pressure detected by the hydraulic sensor 340 exceeds a preset threshold, so as to switch the mixing pipe 320 at the communication position; the angular displacement of the rotating disc 310 is usually the angular distance between the mixing pipe 320 at the communication position and any other mixing pipe 320.

[0048] During use of the cutting fluid nozzle, when the hydraulic sensor 340 detects that the channel hydraulic pressure of the first liquid inlet channel 130 or the second liquid inlet channel 140 exceeds the preset threshold, it indicates that the mixing pipe 320 at the communication position is blocked, at this time, the controller controls the motor 330 to drive the rotating disc 310 to rotate, so as to switch the mixing pipe 320 at the communication position, thereby achieving the purpose of automatically replacing the mixing pipe, and ensuring that the nozzle can continuously spray the cooling liquid with qualified flow rate, flow and other parameters; not only the maintenance efficiency is improved, the maintenance cost is reduced, and the service life of the nozzle is prolonged, but also the downtime loss is reduced, and the continuity and stability of production are ensured.

[0049] For example Figure 2As shown, in some embodiments, the mixed liquid pipeline 320 comprises a pipeline body and a mixed liquid flow guide plate 321 arranged in the pipeline body, which is composed of a plurality of positive helical plates and a plurality of negative helical plates alternately arranged along the axial direction of the pipeline body. This mixed liquid flow guide plate 321 not only has a simple structure and low manufacturing cost, but also can repeatedly disturb the fluid flow state when the cutting fluid to be mixed flows through the mixed liquid pipeline 320, so that the cutting fluid to be mixed is fully dispersed and uniformly mixed, and the cooling and lubrication performance of the mixed cutting fluid is improved.

[0050] In combination Figure 2 And Figure 3 As shown, in some embodiments, the mixed liquid pipeline 320 is two and symmetrically distributed with the rotation axis of the rotating disc 310. In this way, the motor 330 drives the rotating disc 310 to rotate 180° to complete the switching of the mixed liquid pipeline 320 once, which is simple in structure, convenient to control and good in stability.

[0051] In some embodiments, a movable limiting structure is arranged between the rotating disc 310 and the cavity wall of the accommodating cavity 110, which is used to limit the rotation of the rotating disc 310 when the motor 330 does not drive the rotating disc 310, and to ensure the accuracy and sealing performance of the mixed liquid pipeline 320 after switching in abutting with the mixed liquid inlet 111 and the cutting fluid outlet 112. The movable limiting structure can be various, such as damping limiting structure, brake limiting structure, gear limiting structure, magnetic limiting structure, etc.

[0052] For example Figure 3 As shown, in some embodiments, the movable limiting structure comprises a ratchet structure 361, a pawl 362 and an elastic member 363; the ratchet structure 361 is arranged on the rotating disc 310; the pawl 362 is pivoted to the cavity wall of the accommodating cavity 110 and engaged with the ratchet structure 361; the elastic member 363 is connected with the cavity wall of the accommodating cavity 110 and the pawl 362 and is in a pre-tightening state to make the pawl 362 apply a pre-tightening force to the ratchet structure 361. The movable limiting structure can realize directional limiting by virtue of the rigid engagement of the ratchet structure 361 and the pawl 362, can withstand a large load and prevent the rotating disc 310 from reversing, can buffer vibration impact and offset wear clearance under the elastic force of the elastic member 363, and can ensure the continuous and effective engagement of the ratchet structure 361 and the pawl 362 to realize stable and reliable limiting. The ratchet structure 361 can be composed of a plurality of ratchets arranged in an annular array on the rotating disc 310, or can be a ratchet wheel arranged coaxially with the rotating disc 310; the pawl 362 is usually a structure with a claw beak extended at the front end and a counterweight part extended at the rear end; and the elastic member 363 can be a compression spring, a torsion spring, a rubber band, a rubber ring, etc.

[0053] In combination Figure 2 And Figure 3As shown, on the basis of the last embodiment, in order to facilitate installation of the pawl 362 and the elastic member 363, an annular platform is usually arranged in the accommodating cavity 110, and the pawl 362 and the elastic member 363 are both installed on the annular platform.

[0054] For example, the nozzle 200 is a spray nozzle 200. Figure 2 As shown, in some embodiments, the nozzle 200 is a spray nozzle 200; the inside of the nozzle body 100 is further provided with a gas passage 150 in communication with the nozzle 200.

[0055] For example, the nozzle 200 is a spray nozzle 200. Figure 2 As shown, in some embodiments, the front cavity wall and the rear cavity wall of the accommodating cavity 110 are respectively provided with a cleaning gas supply port 113 and a sewage outlet 114; the inside of the nozzle body 100 is further provided with a cleaning gas inlet passage 160 in communication with the cleaning gas supply port 113 and the gas passage 150, and a sewage passage 170 connected with the sewage outlet 114; the sewage passage 170 is provided with an opening and closing structure, which can be a valve, a plug, an end cap, etc.; any one of the mixed liquid pipes 320 can be rotated to a cleaning station by the rotating disc 310, and the cleaning station is a position where the mixed liquid pipe 320 is connected with the cleaning gas supply port 113 and the sewage outlet 114; the controller is further used to control the motor 330 to drive the rotating disc 310 to rotate, so that the mixed liquid pipe 320 replaced by the communication station is rotated to the cleaning station. By arranging the cleaning gas inlet passage 160 and the sewage passage 170 in the nozzle body 100, a self-cleaning path is added to the cutting fluid nozzle, when it is necessary to dredge the blocked mixed liquid pipe 320, the motor 330 is driven by the controller to drive the rotating disc 310 to rotate, so that the blocked mixed liquid pipe 320 is rotated to the cleaning station, the gas outlet of the nozzle 200 is closed, the opening and closing structure on the sewage passage 170 is opened, and high-pressure gas is introduced into the gas passage 150, so that the high-pressure gas flows along the path of “gas passage 150→cleaning gas inlet passage 160→blocked mixed liquid pipe 320→sewage passage 170”, and the high-pressure gas blows back when flowing through the blocked mixed liquid pipe 320, so that the residues causing the blockage in the mixed liquid pipe 320 are swept away, and the residues can be discharged from the sewage passage 170; the blocked material in the mixed liquid pipe 320 is removed without relying on manual disassembly, which provides a usable mixed liquid pipe 320 for the next round of redundant switching, effectively reduces the frequency of disassembly and maintenance of the nozzle, further prolongs the service life of the nozzle, and significantly improves the stability and use efficiency of the cooling system.

[0056] For example, the nozzle 200 is a spray nozzle 200. Figure 2As shown, in some embodiments, a sealing piece 350 is rotatably arranged on the front cavity wall and / or the rear cavity wall of the accommodating cavity 110, and is used to shield all openings on the cavity wall during switching of the mixed liquid pipeline 320; the end of the mixed liquid pipeline 320 is arranged through the sealing piece 350. When the cavity wall where the sealing piece 350 is arranged is the front cavity wall of the accommodating cavity 110, all openings thereon include the mixed liquid inlet 111 and the clean gas supply port 113; when the cavity wall where the sealing piece 350 is arranged is the rear cavity wall of the accommodating cavity 110, all openings thereon include the to-be-mixed liquid outlet 112 and the sewage outlet 114. The sealing piece 350 not only can shield all openings on the cavity wall during switching of the mixed liquid pipeline 320, but also can ensure the sealing of the mixed liquid pipeline 320 and the corresponding opening after switching of the mixed liquid pipeline 320, so as to prevent liquid from leaking into the accommodating cavity 110.

[0057] In combination Figure 2 and Figure 4 As shown, in some embodiments, the nozzle 200 includes a nozzle body 210 arranged at the front end of the spray head body 100, an atomizing seat 220 arranged at the front end of the nozzle body 210, and an atomizing cover 230 arranged on the atomizing seat 220 and threadedly connected with the atomizing seat 220; the nozzle body 210 is internally provided with a spray head liquid inlet channel 211 connected with the liquid outlet channel 120 and a spray head gas inlet channel 212 connected with the gas channel 150; the atomizing cover 230 and the atomizing seat 220 form a gas-liquid mixing cavity therebetween, and the size of the gas-liquid mixing cavity can be adjusted by screwing the atomizing cover 230; the atomizing seat 220 is internally provided with an atomizing liquid inlet channel 221 connecting the spray head liquid inlet channel 211 with the gas-liquid mixing cavity along the axial direction of the atomizing seat 220, and is further provided with an atomizing gas inlet channel 222 connecting the spray head gas inlet channel 212 with the gas-liquid mixing cavity; the atomizing cover 230 is provided with an atomizing nozzle 231 at the central part thereof and connected with the gas-liquid mixing cavity. During use, the mixed cutting fluid flows into the gas-liquid mixing cavity from the atomizing liquid inlet channel 221, and the gas flows into the gas-liquid mixing cavity from the atomizing gas inlet channel 222, so that high-speed impact and turbulence are formed in the gas-liquid mixing cavity, thereby dispersing the cutting fluid into fine droplets and realizing atomizing spraying. The size of the gas-liquid mixing cavity can be adjusted by screwing the atomizing cover 230, and then the flow rate and pressure of the gas flowing into the gas-liquid mixing cavity can be controlled, so that the impact intensity of the gas on the cutting fluid can be flexibly changed, and fine adjustment of the atomizing effect can be realized to adapt to the differentiated requirements of different materials and cutting conditions on the spraying state.

[0058] In some embodiments, the atomizing gas inlet channel 222 is at least two, and the gas outlet ends of each atomizing gas inlet channel 222 are uniformly distributed around the axial line of the atomizing seat 220. In this way, the uniformity of the spraying is further improved under the premise of considering the machining adaptability and adjustment flexibility, and the use performance of the spray head under multi-condition conditions is effectively improved.

[0059] The description of the various embodiments of the application presented herein is presented for the purpose of illustration only, and is not intended to detail or limit the disclosed embodiments. Many modifications and variations to the described embodiments will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application of the embodiments, or technical improvements over the prior art, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

[0060] It is understood that certain features of the application, which are, individually, described under separate embodiments, can also be provided in combination in a single embodiment. Conversely, various features of the application, which are, individually, described in the context of a single embodiment, can also be provided separately or in any appropriate

[0061] All publications, patents, and patent applications mentioned herein are hereby incorporated by reference in their entirety to the same extent as if each individual publication, patent, or patent application was specifically and individually indicated to be incorporated by reference. Also, the citation of any reference in this disclosure is not an admission that such reference is prior art to the present application. To the extent that section headings are used, they should not be construed as necessarily limiting the subject matter described.

Claims

1. A cutting fluid nozzle, comprising a nozzle body (100) and a nozzle (200) disposed at the front end of the nozzle body (100), characterized in that: It also includes a mixing mechanism and a control system; The nozzle body (100) has an internal accommodating cavity (110), and the front and rear walls of the accommodating cavity (110) are respectively provided with a mixed liquid inlet (111) and a liquid to be mixed outlet (112); the nozzle body (100) also has an outlet channel (120) that connects the mixed liquid inlet (111) to the nozzle (200), and a first inlet channel (130) and a second inlet channel (140) that are respectively connected to the liquid to be mixed outlet (112); The mixing mechanism includes a turntable (310) rotatably disposed in a receiving cavity (110). At least two mixing pipes (320) are provided on the turntable (310). Any one of the mixing pipes (320) can rotate with the turntable (310) to the connecting position. The connecting position is the position where the mixing pipe (320) connects the mixing inlet (111) with the mixing outlet (112). The control system includes a motor (330), a hydraulic sensor (340), and a controller. The motor (330) is installed inside the nozzle body (100) and is connected to the turntable (310) for transmission. The hydraulic sensor (340) is installed in the first liquid inlet channel (130) or the second liquid inlet channel (140) for detecting the channel hydraulic pressure. The controller is communicatively connected to the motor (330) and the hydraulic sensor (340) respectively, and is used to control the motor (330) to drive the turntable (310) to rotate when the channel hydraulic pressure detected by the hydraulic sensor (340) exceeds a preset threshold, thereby switching the mixing pipe (320) at the connecting station.

2. The cutting fluid nozzle according to claim 1, characterized in that: The mixing pipe (320) includes a pipe body and a mixing guide plate (321) disposed in the pipe body. The mixing guide plate (321) is composed of multiple positive spiral plates and multiple negative spiral plates alternately arranged along the axial direction of the pipe body.

3. The cutting fluid nozzle according to claim 2, characterized in that: The mixing pipe (320) consists of two pipes, which are symmetrically distributed around the rotation axis of the turntable (310).

4. The cutting fluid nozzle according to claim 1, characterized in that: A movable limiting structure is provided between the turntable (310) and the cavity wall of the accommodating cavity (110) to limit the rotation of the turntable (310) when the motor (330) is not driving it.

5. The cutting fluid nozzle according to claim 4, characterized in that: The movable limiting structure includes a ratchet structure (361), a pawl (362), and an elastic element (363). The ratchet structure (361) is disposed on the turntable (310); The pawl (362) is pivotally connected to the cavity wall of the receiving cavity (110) and engages with the ratchet structure (361); The elastic element (363) is connected to the cavity wall of the accommodating cavity (110) and the pawl (362) and is in a pre-tightened state so that the pawl (362) applies a pre-tightening force to the ratchet structure (361).

6. The cutting fluid nozzle according to any one of claims 1 to 5, characterized in that: The nozzle (200) is an atomizing nozzle (200); The nozzle body (100) is also provided with a gas passage (150) that is connected to the nozzle (200).

7. The cutting fluid nozzle according to claim 6, characterized in that: The front and rear walls of the accommodating cavity (110) are respectively provided with a clean air supply port (113) and a drain port (114); the nozzle body (100) is also provided with a clean air intake channel (160) that connects the clean air supply port (113) to the gas channel (150), and a drain channel (170) that connects to the drain port (114); the drain channel (170) is provided with an opening and closing structure; Any mixing pipe (320) can rotate with the turntable (310) to the cleaning station, which is the position where the mixing pipe (320) connects the cleaning air supply port (113) and the drain port (114); The controller is also used to control the motor (330) to drive the turntable (310) to rotate, thereby rotating the mixed liquid pipeline (320) replaced by the connecting station to the cleaning station.

8. The cutting fluid nozzle according to claim 7, characterized in that: A sealing plate (350) is rotatably provided on the front and / or rear cavity walls of the receiving cavity (110), and the sealing plate (350) is used to cover all the openings on the cavity wall where it is located during the switching of the mixing pipeline (320); The end of the mixing pipe (320) is provided through a sealing plate (350).

9. The cutting fluid nozzle according to claim 7, characterized in that: The nozzle (200) includes a nozzle body (210) disposed at the front end of the nozzle body (100), an atomizing seat (220) disposed at the front end of the nozzle body (210), and an atomizing cover (230) covering the atomizing seat (220) and threadedly connected thereto. The nozzle body (210) is provided with a nozzle liquid inlet channel (211) connected to the liquid outlet channel (120) and a nozzle air inlet channel (212) connected to the gas channel (150). A gas-liquid mixing chamber is formed between the atomizing cover (230) and the atomizing seat (220), and the size of the gas-liquid mixing chamber can be adjusted by rotating the atomizing cover (230); The atomizing seat (220) is provided with an atomizing liquid inlet channel (221) that connects the nozzle liquid inlet channel (211) with the gas-liquid mixing chamber along its axial direction. The atomizing seat (220) is also provided with an atomizing air inlet channel (222) that connects the nozzle air inlet channel (212) with the gas-liquid mixing chamber. The central part of the atomizing hood (230) is provided with an atomizing nozzle (231) that communicates with the gas-liquid mixing chamber.

10. The cutting fluid nozzle according to claim 9, characterized in that: The atomizing air intake channel (222) is at least two, and the air outlet of each atomizing air intake channel (222) is evenly distributed around the axis of the atomizing seat (220).

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