A cutting fluid high-pressure conveying negative pressure air discharging device and a cutting fluid high-pressure conveying machine

Abstract

The utility model relates to cutting fluid high pressure delivery technical field discloses a cutting fluid high pressure delivery negative pressure air exhaust device and cutting fluid high pressure delivery machine, including negative pressure casing, its inside is provided with exhaust valve group, still be provided with air inlet and air outlet on the negative pressure casing, the air inlet with air outlet all are linked to exhaust valve group, still be provided with control switch on the negative pressure casing, control switch is used for controlling the action of exhaust valve group, the air inlet is linked to the filter device of cutting fluid high pressure delivery machine. Through connecting negative pressure air exhaust device on filter device, can after system starting, the air in filter device is actively, quickly discharged. This fundamentally eliminates the problem that cutting fluid can not be injected or injects slowly because of air back pressure, ensures that whole high pressure delivery system can realize quick, steady starting.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure cutting fluid delivery technology, and in particular to a high-pressure cutting fluid delivery negative pressure air removal device and a high-pressure cutting fluid delivery machine. Background Technology

[0002] In modern machining, cutting fluid is widely used in turning, milling, drilling, and grinding processes, serving functions such as cooling, lubrication, cleaning, and rust prevention. Metal shavings, abrasive particles, and other impurities generated during machining mix with the cutting fluid. If not removed promptly, these impurities can severely affect the surface quality and machining accuracy of the workpiece, and shorten the lifespan of cutting tools and equipment. Therefore, efficient filtration and recycling of used cutting fluid is a crucial step in achieving green, efficient, and precision manufacturing.

[0003] High-pressure cutting fluid delivery equipment is designed to provide clean cutting fluid with sufficient pressure and flow rate for machining centers, CNC machine tools, and similar applications. Such systems typically include a supply pump, a main circulation line, a filtration unit, and a return line. The filtration unit is the core of the entire system, usually employing one or more switchable, sealed filter tanks containing filter bags or cartridges to intercept solid impurities.

[0004] However, in practical applications, the applicant discovered a significant technical challenge with the existing technology: When the system starts up or the filter canister is reintroduced after cleaning, it is filled with air. If the fluid supply pump is turned on directly to inject cutting fluid into the filter canister, the air inside will create a significant back pressure (positive pressure), hindering the fluid's entry. More commonly, the fluid supply pump has a limited head, and the pressure it generates is insufficient to overcome this air resistance and adequately compress the air inside the canister. This results in the cutting fluid not being effectively injected into the filter canister, or the injection rate being extremely slow, severely impacting the system's rapid start-up and continuous operation. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a high-pressure cutting fluid conveying negative pressure air removal device and a high-pressure cutting fluid conveyor, which can effectively inject cutting fluid into the filter tank.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: On the one hand, this utility model provides a high-pressure delivery and negative pressure air venting device for cutting fluid, comprising: A negative pressure housing is provided with an exhaust valve assembly inside. The negative pressure housing is also provided with an air inlet and an air outlet, both of which are connected to the exhaust valve assembly. The negative pressure housing is also provided with a control switch, which is used to control the operation of the exhaust valve assembly. The air inlet is connected to the filter device of the high-pressure cutting fluid conveyor.

[0007] Preferably, the exhaust valve assembly includes a first exhaust valve and a second exhaust valve, the air inlet is connected to the first exhaust valve, the first exhaust valve is connected to the second exhaust valve, and the second exhaust valve is connected to the air outlet.

[0008] Preferably, the air outlet includes a first air outlet and a second air outlet, and both the first air outlet and the second air outlet are respectively connected to the second exhaust valve.

[0009] Preferably, the control switch is located on the side close to the first exhaust valve, and the control switch is used to control the operation of the first exhaust valve.

[0010] Preferably, the control switch is a rotary switch.

[0011] On the other hand, this utility model provides a high-pressure cutting fluid conveyor, comprising: The housing is equipped with a high-pressure conveying device, a filtering device, and the aforementioned high-pressure conveying negative-pressure air venting device for cutting fluid. The filtering device includes a filter barrel, and the cover of the filter barrel is equipped with a filter nozzle, which is connected to the air inlet.

[0012] Preferably, the high-pressure cutting fluid delivery negative pressure air venting device is located at the top of the housing.

[0013] Preferably, the high-pressure cutting fluid delivery negative pressure air venting device is covered by a negative pressure protective cover.

[0014] The beneficial effects of this utility model are as follows: (1) By connecting a negative pressure air venting device to the filter device, this utility model can actively and quickly vent the air in the filter device after the system is started. This fundamentally eliminates the problem of cutting fluid not being able to be injected or being injected slowly due to air back pressure, ensuring that the entire high-pressure delivery system can achieve a fast and stable start-up.

[0015] (2) Since the introduction of the negative pressure device has solved the problem of injection resistance in advance, it is no longer necessary to rely on a high-head, high-power high-pressure pump to inject cutting fluid. This utility model can use a relatively small power supply pump to achieve the same delivery effect, which not only significantly reduces the manufacturing cost of the equipment, but more importantly, reduces power consumption in daily operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a high-pressure cutting fluid delivery negative pressure air venting device provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the internal structure of a high-pressure cutting fluid delivery negative pressure air venting device provided in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the structure of a high-pressure cutting fluid conveyor provided in Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of the internal structure of a high-pressure cutting fluid conveyor provided in Embodiment 2 of this utility model.

[0018] In the picture: 1. Negative pressure housing; 11. Cavity; 12. Air inlet; 13. First air outlet; 14. Second air outlet; 15. Control switch; 2. Exhaust valve assembly; 21. First exhaust valve; 22. Second exhaust valve; 3. Housing; 31. High-pressure conveying device; 32. Filtering device; 321. Filter barrel; 322. Barrel cover; 323. Filter nozzle; 4. Negative pressure protective cover. Detailed Implementation

[0019] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0023] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a high-pressure cutting fluid delivery negative pressure air venting device. The device includes a negative pressure housing 1, with an internal cavity 11 for accommodating an exhaust valve assembly 2. In this embodiment, the exhaust valve assembly 2 specifically includes a first exhaust valve 21 and a second exhaust valve 22.

[0024] The negative pressure housing 1 is provided with an air inlet 12, which is connected to the inlet of the first exhaust valve 21 through an internal pipeline. The outlet of the first exhaust valve 21 is connected to the inlet of the second exhaust valve 22 through an internal pipeline.

[0025] The negative pressure housing 1 is also equipped with an exhaust nozzle for discharging gas. Specifically, the exhaust nozzle may include a first exhaust nozzle 13 and a second exhaust nozzle 14. Both the first exhaust nozzle 13 and the second exhaust nozzle 14 are connected to the outlet of the second exhaust valve 22 via internal pipes. This dual exhaust nozzle design can accelerate the exhaust speed.

[0026] A control switch 15 is also provided on the negative pressure housing 1. This control switch 15 is located on the side near the first exhaust valve 21 and is used to manually control the opening and closing of the first exhaust valve 21. In this embodiment, the control switch 15 is preferably a rotary switch, which allows the operator to control the operation of the first exhaust valve 21 by rotating the switch, making the operation simple and intuitive.

[0027] The working principle of this negative pressure air venting device is as follows: When it is necessary to vent the air in the filter canister 321, the first exhaust valve 21 is opened by the control switch 15. At this time, the air in the filter device 32 enters through the air inlet 12 under the action of pressure difference, flows through the first exhaust valve 21 and the second exhaust valve 22, and is finally discharged to the outside of the system from the first exhaust valve 13 and / or the second exhaust valve 14. As the air is continuously discharged, a negative pressure is generated inside the filter canister 321, thereby enabling the cutting fluid to be smoothly and quickly drawn in from the inlet.

[0028] Example 2 like Figure 3 and Figure 4 As shown, this embodiment provides a high-pressure cutting fluid conveyor integrating the aforementioned negative pressure air venting device. The high-pressure cutting fluid conveyor includes a housing 3. Inside the housing 3, a high-pressure conveying device 31 and a filtering device 32 are disposed. The filtering device 32 includes at least one filter tank 321. The top of the filter tank 321 is sealed by a switchable lid 322. A filter nozzle 323 is disposed on the lid 322.

[0029] The high-pressure cutting fluid delivery negative pressure air exhaust device in Embodiment 1 is fixedly installed on the top of the housing 3, which is a convenient location for operation and maintenance. The air inlet 12 of the negative pressure air exhaust device is connected to the filter nozzle 323 on the cover 322 of the filter tank 321 via a pipe.

[0030] To ensure safety and prevent contact with foreign objects, the high-pressure cutting fluid delivery negative pressure air venting device can also be covered by a negative pressure protective cover 4.

[0031] The working process of this high-pressure cutting fluid conveyor is as follows: Preparation before startup: After the system is started for the first time or after the filter canister 321 is cleaned, the inside of the filter canister 321 will be filled with air. At this time, the operator should open the negative pressure protective cover 4, turn on the control switch 15, and start the negative pressure air venting device.

[0032] Establishing negative pressure through exhaust: The negative pressure air exhaust device starts working, continuously drawing air out of the filter canister 321 and releasing it to the atmosphere through the connected pipe. The air pressure inside the filter canister 321 drops rapidly, creating a negative pressure state.

[0033] Successful fluid injection: Simultaneously or subsequently, the high-pressure delivery device 31 is activated. Since the filter tank 321 is already under negative pressure, creating a pressure difference with the external atmospheric pressure, the cutting fluid is "drawn" into the filter tank 321, thus completely overcoming the injection difficulties caused by air back pressure in traditional methods. The cutting fluid quickly fills the filter tank 321 and begins normal filtration circulation.

[0034] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A high-pressure cutting fluid delivery and negative pressure air venting device, characterized in that, include: The negative pressure housing (1) is provided with an exhaust valve assembly (2) inside. The negative pressure housing (1) is also provided with an air inlet (12) and an air outlet. The air inlet (12) and the air outlet are both connected to the exhaust valve assembly (2). The negative pressure housing (1) is also provided with a control switch (15). The control switch (15) is used to control the operation of the exhaust valve assembly (2). The air inlet (12) is connected to the filter device (32) of the high-pressure cutting fluid conveyor.

2. The cutting fluid high-pressure delivery negative pressure air venting device according to claim 1, characterized in that, The exhaust valve assembly (2) includes a first exhaust valve (21) and a second exhaust valve (22). The air inlet (12) is connected to the first exhaust valve (21), the first exhaust valve (21) is connected to the second exhaust valve (22), and the second exhaust valve (22) is connected to the air outlet.

3. The cutting fluid high-pressure delivery negative pressure air venting device according to claim 2, characterized in that, The air outlet includes a first air outlet (13) and a second air outlet (14), and the first air outlet (13) and the second air outlet (14) are respectively connected to the second exhaust valve (22).

4. The cutting fluid high-pressure delivery negative pressure air venting device according to claim 2, characterized in that, The control switch (15) is located on the side near the first exhaust valve (21), and the control switch (15) is used to control the operation of the first exhaust valve (21).

5. The cutting fluid high-pressure delivery negative pressure air venting device according to claim 4, characterized in that, The control switch (15) is a rotary switch.

6. A high-pressure cutting fluid conveyor, characterized in that, include: The housing (3) is provided with a high-pressure conveying device (31), a filter device (32) and a cutting fluid high-pressure conveying negative pressure air discharge device as described in any one of claims 1 to 5. The filter device (32) includes a filter barrel (321). A filter nozzle (323) is provided on the barrel cover (322) of the filter barrel (321). The filter nozzle (323) is connected to the air inlet (12).

7. A high-pressure cutting fluid conveyor according to claim 6, characterized in that, The high-pressure delivery and negative pressure air exhaust device for cutting fluid is located on the top of the housing (3).

8. A high-pressure cutting fluid conveyor according to claim 7, characterized in that, The high-pressure delivery and negative pressure air exhaust device for cutting fluid is covered by a negative pressure protective cover (4).

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