A high-pressure delivery system for cutting fluid

Abstract

The utility model relates to cutting fluid high pressure delivery technical field discloses a cutting fluid high pressure delivery system, including filter bucket, annular mounting plate in filter bucket inside, upper filter disc and lower filter disc constitute a firm filter core installation and support frame together. The filter rod connects the upper and lower filter disc into an organic whole, forms stable pressure bearing structure. This design can effectively resist the long -term impact and pressure fluctuation of high pressure cutting fluid, prevents the deformation, cracking or breakdown of filter core assembly.

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 system. Background Technology

[0002] In the field of modern machining, especially in high-end equipment such as CNC machine tools and machining centers, cutting fluid plays a crucial role. It not only effectively reduces cutting temperature, decreases tool wear, and improves machining accuracy and surface finish, but also promptly flushes away chips, ensuring the smooth progress of the machining process. To meet the special process requirements such as efficient chip removal and deep hole machining, modern machining systems generally employ high-pressure delivery systems to supply cutting fluid, with operating pressures typically reaching tens or even hundreds of bar.

[0003] However, high-pressure delivery systems place extremely stringent requirements on the cleanliness of the cutting fluid. Solid impurities such as metal shavings and grinding wheel powder mixed in the cutting fluid will become abrasives under high pressure, accelerating the wear of precision pumps, valves, and nozzles, leading to a drop in system pressure, insufficient flow, and even malfunctions and shutdowns. More seriously, unfiltered impurities can clog the cooling channels inside the cutting tool or the fine nozzles, directly affecting machining quality and efficiency, and even causing tool breakage or workpiece scrap.

[0004] Filter cartridges commonly used for filtration have limited structural strength in their support frame and end caps. When subjected to the impact and pressure fluctuations of high-pressure liquids over a long period of time, they are prone to structural deformation, weld cracking, or end cap detachment, leading to filter cartridge puncture and complete loss of filtration function. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a high-pressure cutting fluid delivery system with extremely high structural reliability and effective guarantee of filtration performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a high-pressure cutting fluid delivery system, comprising: The enclosure has input and output pipes on its side; A high-pressure delivery pump is installed inside the housing, and includes a delivery inlet and a delivery outlet; A filter canister is mounted on a housing, with its top extending beyond the top of the housing and a filter inlet and a filter outlet located at its bottom. The input pipe is connected to the filter inlet, and the filter outlet is connected to the conveying inlet and the conveying outlet is connected to the output pipe; The filter barrel includes a barrel body, which is a hollow structure. A barrel cover is provided on the top of the barrel body. An annular mounting plate is provided at the bottom of the interior of the barrel body. A lower filter plate is provided on the top of the annular mounting plate. A filter rod is connected above the center of the lower filter plate. An upper filter plate is detachably connected to the top of the filter rod. A filter element is provided between the upper filter plate and the lower filter plate. A buffer filter cavity is formed between the filter element and the inner wall of the barrel body. The filter inlet is connected to the buffer filter cavity, and the filter outlet is connected to the interior of the annular mounting plate.

[0007] Preferably, the filter element includes a core body and a core disk, the core disks are arranged in two sets and are distributed vertically, the core body is disposed on the outer periphery of the core disk, the core disk is provided with perforations and a number of core holes, and the filter rod passes through the perforations.

[0008] Preferably, a compression spring is provided at the center of the bottom of the bucket lid, and the bottom of the compression spring abuts against the top of the upper filter disc.

[0009] Preferably, the top of the box is provided with a filter installation groove, and the outer wall of the barrel is provided with an annular fixing plate.

[0010] Preferably, a door is rotatably provided on the front side of the box.

[0011] The beneficial effects of this utility model are as follows: (1) The annular mounting plate, upper filter disc, and lower filter disc inside the filter tank together form a robust filter element mounting and support frame. The filter rod connects the upper and lower filter discs into one piece, forming a stable pressure-bearing structure. This design can effectively resist the long-term impact and pressure fluctuation of high-pressure cutting fluid, and prevent the filter element assembly from deforming, cracking, or breaking down.

[0012] (2) By setting up a buffer filtration chamber, the high-pressure cutting fluid entering from the filtration inlet first impacts the inner wall of the barrel, rather than directly impacting the filter element. This structure plays a role in buffering, diffusion, and flow guidance, allowing the liquid to pass through the entire outer surface of the filter element smoothly and evenly, avoiding localized scouring damage. At the same time, this design makes full use of the entire effective filtration area of ​​the filter element, reducing the flow load per unit area.

[0013] (3) The filter element is precisely positioned and fixed between the upper and lower filter discs by passing the filter rod through the perforation of the upper and lower core discs. The compression spring at the bottom of the lid continuously applies downward pressure, causing the upper filter disc to press against the upper core disc of the filter element, ensuring the axial compression force of the filter element and preventing loosening under pressure fluctuations. This ensures the dynamic sealing effect between the end face of the filter element and the mounting base, effectively preventing short-circuit leakage of unfiltered liquid. Attached Figure Description

[0014] 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.

[0015] Figure 1 This invention provides a schematic diagram of a high-pressure cutting fluid delivery system according to an embodiment of the present invention. Figure 2 This invention provides a schematic diagram of the internal structure of a high-pressure cutting fluid delivery system according to an embodiment of the present invention. Figure 3 A schematic diagram of the structure of the filter barrel provided in this embodiment of the utility model; Figure 4 This is a cross-sectional structural diagram of the filter bucket provided in an embodiment of the present utility model.

[0016] In the picture: 1. Housing; 11. Input pipe; 12. Output pipe; 13. Housing door; 2. High-pressure conveying pump; 21. Conveying inlet; 22. Conveying outlet; 3. Filter barrel; 31. Barrel body; 32. Annular fixing plate; 33. Filter inlet; 34. Filter outlet; 35. Barrel lid; 4. Annular mounting plate; 5. Lower filter disc; 6. Filter rod; 7. Upper filter disc; 8. Filter element; 81. Element body; 82. Element disc; 821. Perforation; 822. Element hole; 83. Buffer filter chamber; 9. Compression spring. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] like Figures 1 to 4 As shown, this utility model provides a high-pressure cutting fluid delivery system. The system includes a housing 1, which is typically welded from steel plates and has sufficient structural strength to accommodate the internal components. An input pipe 11 and an output pipe 12 for connecting to external pipelines are provided on one side of the housing 1. The input pipe 11 is used to introduce cutting fluid containing impurities returning from the machine tool, or a water tank containing cutting fluid; the output pipe 12 is used to deliver clean, high-pressure cutting fluid, after filtration and pressurization, to the point of use on the machine tool. To facilitate maintenance and repair of the components inside the housing 1, a hinged door 13 is provided on the front side of the housing 1.

[0022] Inside the housing 1, a high-pressure transfer pump 2 is fixedly installed. The high-pressure transfer pump 2 is the power core of the system, and its type can be a multi-stage centrifugal pump or a high-pressure plunger pump, etc. The high-pressure transfer pump 2 has a transfer inlet 21 and a transfer outlet 22.

[0023] A filter barrel 3 is installed on the top of the housing 1. Specifically, a circular filter mounting groove (not shown) is provided on the top of the housing 1. The filter barrel 3 includes a vertically arranged cylindrical barrel 31, which is a hollow structure. A ring-shaped fixing plate 32 is welded to the middle of the outer wall of the barrel 31. During installation, the lower part of the barrel 31 is placed into the filter mounting groove, and the ring-shaped fixing plate 32 is fastened to the top plate of the housing 1 with bolts, thereby achieving a stable installation of the filter barrel 3. The top of the filter barrel 3 extends beyond the top of the housing 1, which facilitates subsequent maintenance operations. A filter inlet 33 and a filter outlet 34 are provided at the bottom of the barrel 31.

[0024] The piping connections of the system are as follows: external cutting fluid containing impurities enters the system through the input pipe 11 and connects to the filter inlet 33 at the bottom of the filter tank 3. The filter outlet 34 at the bottom of the filter tank 3 is then connected to the delivery inlet 21 of the high-pressure delivery pump 2 through a pipe. Finally, the delivery outlet 22 of the high-pressure delivery pump 2 is connected to the output pipe 12 through a pipe.

[0025] The internal structure of the filter canister 3 is the core of this embodiment. An annular mounting plate 4 is fixedly installed at the bottom of the canister body 31. A lower filter disc 5 is placed on top of the annular mounting plate 4. A filter rod 6 is vertically connected upwards from the center of the lower filter disc 5. An upper filter disc 7 is detachably connected to the top of the filter rod 6 via threads or other means. A filter element 8 is clamped and installed between the upper filter disc 7 and the lower filter disc 5.

[0026] The filter element 8 has the following specific structure: it includes a cylindrical core 81 made of high-precision filter material (such as stainless steel sintered mesh, glass fiber, or composite filter paper), and two core discs 82, one above the other. The core discs 82 are typically made of metal, and the core 81 is fixedly wrapped around the outer periphery of the two core discs 82. Each core disc 82 has a central perforation 821 for the filter rod 6 to pass through, and multiple core holes 822 for liquid passage are also formed around the perforation 821.

[0027] When the filter element 8 is installed between the upper filter disc 7 and the lower filter disc 5 and locked by the filter rod 6, an annular buffer filter chamber 83 is formed between its outer wall and the inner wall of the barrel 31. The filter inlet 33 is connected to this buffer filter chamber 83. The clean liquid filtered by the filter element 8 collects in the space below the lower filter disc 5 through the core hole 822 on the core disc 82, and finally flows out from the filter outlet 34 through the internal flow channel of the annular mounting plate 4.

[0028] To ensure that the filter element 8 remains compressed under high pressure and vibration conditions and to prevent seal failure, a compression spring 9 is installed at the center of the bottom of the lid 35. When the lid 35 is closed, the bottom of the compression spring 9 abuts against the top of the upper filter disc 7, providing a continuous downward compression force, thereby ensuring a tight fit and reliable seal between the entire filter assembly.

[0029] The working process of this utility model is as follows: Cutting fluid containing impurities enters from the input pipe 11 and enters the buffer filtration chamber 83 of the filter tank 3 tangentially or radially through the filter inlet 33. The liquid flow rate decreases and the flow direction changes within this chamber, achieving initial buffering and flow equalization, avoiding direct impact of the high-pressure fluid on the surface of the filter element 8. Subsequently, under pressure, the liquid passes through the core 81 of the filter element 8 from the outside to the inside. Solid impurities are trapped on the outer surface of the filter element 8, while the clean liquid enters the interior of the filter element 8 and collects through the core holes 822 on the upper and lower core plates 82. The clean liquid sequentially passes through the structure of the upper and lower filter plates 5, and finally flows out from the filter outlet 34 through the interior of the annular mounting plate 4, entering the high-pressure delivery pump 2. After being pressurized by the high-pressure delivery pump 2, it becomes high-pressure clean cutting fluid, and finally is delivered to the machine tool through the output pipe 12, completing one working cycle. When the filter element 8 needs to be replaced, simply open the lid 35 outside the housing 1, unscrew the filter rod 6 upwards, and the upper filter disc 7, filter element 8, and lower filter disc 5 can be removed as a whole from the top of the filter housing 3. After replacing the filter element 8, reinstall it, tighten the filter rod 6, and close the lid 35. The entire process does not require emptying the housing 1 or disassembling any external pipelines, making maintenance very convenient.

[0030] 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 system, characterized in that, include: The box (1) has an input pipe (11) and an output pipe (12) on its side. A high-pressure delivery pump (2) is installed inside the housing (1), and includes a delivery inlet (21) and a delivery outlet (22). A filter bucket (3) is installed on the box body (1). The top of the filter bucket (3) extends out of the top of the box body (1). The bottom of the filter bucket (3) is provided with a filter inlet (33) and a filter outlet (34). The input pipe (11) is connected to the filter inlet (33), the filter outlet (34) is connected to the delivery inlet (21), and the delivery outlet (22) is connected to the output pipe (12). The filter barrel (3) includes a barrel body (31), which is a hollow structure. A barrel cover (35) is provided on the top of the barrel body (31). An annular mounting plate (4) is provided at the bottom of the interior of the barrel body (31). A lower filter plate (5) is provided on the top of the annular mounting plate (4). A filter rod (6) is connected above the center of the lower filter plate (5). An upper filter plate (7) is detachably connected to the top of the filter rod (6). A filter element (8) is provided between the upper filter plate (7) and the lower filter plate (5). A buffer filter cavity (83) is formed between the filter element (8) and the inner wall of the barrel body (31). The filter inlet (33) is connected to the buffer filter cavity (83). The filter outlet (34) is connected to the interior of the annular mounting plate (4).

2. The high-pressure cutting fluid delivery system according to claim 1, characterized in that, The filter element (8) includes a core body (81) and a core disk (82). The core disk (82) is provided in two sets and is arranged vertically. The core body (81) is located on the outer periphery of the core disk (82). The core disk (82) is provided with a perforation (821) and a number of core holes (822). The filter rod (6) passes through the perforation (821).

3. A high-pressure cutting fluid delivery system according to claim 1 or 2, characterized in that, A compression spring (9) is provided at the center of the bottom of the bucket lid (35), and the bottom of the compression spring (9) abuts against the top of the upper filter plate (7).

4. The high-pressure cutting fluid delivery system according to claim 1, characterized in that, The top of the box (1) is provided with a filter installation groove, and the outer wall of the barrel (31) is provided with an annular fixing plate (32).

5. A high-pressure cutting fluid delivery system according to claim 1, characterized in that, The front side of the box (1) is provided with a door (13).

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