Centralized cutting fluid supply and return system

Abstract

The utility model relates to the technical field of cutting fluid supply and return, in particular to a cutting fluid centralized supply and return system which comprises a lathe, a centralized processing assembly and a standard connecting assembly, the centralized processing assembly is used for pumping out cutting fluid in the lathe, then centrally processing the cutting fluid and pumping the cutting fluid into the lathe again, and the standard connecting assembly is used for forming a cutting fluid circulation loop. The standard connecting assembly comprises a standard connector and a standard connecting pipe, the standard connector is used for connecting the lathe and cutting fluid inlets and outlets of all parts of the centralized processing assembly, a lining ring is arranged at one end of the inner wall of the standard connector, and the standard connecting pipe is used for connecting the standard connector or the other standard connecting pipe. The inner wall of one end of the standard connecting pipe is sleeved with a telescopic connector, and the telescopic connector is matched with the inner wall of the standard connecting pipe. According to the cutting fluid supply and return system, the problem that in an existing cutting fluid supply and return system, all devices cannot be rapidly connected is solved, all the devices can be rapidly connected, and it is ensured that all the connecting positions are stably connected and cannot be disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting fluid supply and return, in particular to a cutting fluid centralized supply and return system. Background Art

[0002] Cutting fluid plays a key role in metal cutting processing. It can reduce cutting temperature, reduce tool wear and improve workpiece surface quality. The cutting fluid supply and return system can ensure that the cutting fluid is continuously and stably supplied to the cutting area during the processing, thereby maintaining the optimal state of the cutting process and improving processing efficiency. By centrally processing and reusing cutting fluid, the consumption and waste of cutting fluid are reduced. This can not only reduce production costs, but also reduce the impact on the environment, which meets the requirements of green manufacturing and sustainable development. At the same time, the cutting fluid supply and return system can play a role in maintaining equipment, improving the working environment and improving processing quality. However, the existing cutting fluid supply and return system is too expensive and the equipment layout is relatively scattered.

[0003] For this purpose, Chinese patent publication number CN212946822U discloses a modular cutting fluid centralized supply and return system, including an intelligent proportioning module, a liquid supply system, a liquid return system, a machine tool intelligent terminal and a cutting fluid recovery and filtration system. The liquid supply system includes a constant pressure liquid supply device and an aerial liquid supply pipeline. The liquid return system includes an extractor arranged on the machine tool and an aerial liquid return pipeline. The liquid supply system and the liquid return system are both connected to multiple machine tools. Each machine tool is provided with a machine tool intelligent terminal to detect the cutting fluid capacity of each machine tool and control the connection status of the liquid supply system and the liquid return system with the machine tool through an electromagnetic valve. The machine tool intelligent terminals of multiple machine tools are interconnected, and the liquid supply system and the liquid return system are controlled by a time-sharing supply and return mode. Liquid supply and liquid return are only performed on a set number of machine tools in a unit time. Through the modular combination design, the layout cost is reduced, and it is convenient for later re-layout. The liquid return system and the cutting fluid recovery and filtration system are used in combination to solve the problem of oil fume pollution in the workshop.

[0004] However, each device in the existing cutting fluid supply and return system has its own different connection device, and its pipe diameter, connection method, connection position, etc. are all different, which makes it impossible to quickly and stably connect and install the devices, increasing the installation time and error rate. At the same time, it is impossible to quickly interchange the devices. When repairing and upgrading, the entire system needs to be shut down on a large scale, which is not convenient for replacing and repairing faulty equipment. At the same time, the connection between the devices in the existing cutting fluid supply and return system is prone to leakage and disconnection, resulting in cutting fluid leakage, polluting the working environment, and affecting the health of operators. Utility Model Content

[0005] In view of the above problems, a cutting fluid centralized supply and return system is provided, which solves the problem of the inability to quickly and stably connect various devices by adding unified standard connecting pipes and marked connectors.

[0006] In order to solve the problems of the prior art, the utility model provides a centralized cutting fluid supply and return system, including a lathe and a centralized processing component. The centralized processing component is used to extract the cutting fluid in the lathe, centrally process it and pump it back into the lathe. It also includes a standard connection component for forming a circuit for the circulation of the cutting fluid. The standard connection component includes a standard connecting head and a standard connecting pipe. The standard connecting head is used to connect the cutting fluid inlet and outlet of the lathe and each component of the centralized processing component. An inner lining ring is provided at one end of the inner wall of the standard connecting head. The standard connecting pipe is used to connect the standard connecting head or another standard connecting pipe. An expansion joint is sleeved on the inner wall of one end of the standard connecting pipe, and the expansion joint is adapted to the inner wall of the standard connecting head.

[0007] Preferably, an inner ring is provided at one end of the inner wall of the standard connecting pipe, the inner ring is matched with one end of the telescopic joint, and the inner ring and the telescopic joint are connected via a sealing spring.

[0008] Preferably, an outer fixing ring is fixed at one end of the outer wall of the standard connecting tube, and a plurality of shaft seats are provided on the surface of the outer fixing ring, on which a pull rod is rotatably connected, and a locking ring is fixed at the other end of the outer wall of the standard connecting tube and one end of the outer wall of the standard connecting head, and one end of the pull rod is matched with the locking ring.

[0009] Preferably, one end of the pull rod is connected to an elliptical buckle, one end of the elliptical buckle is elliptical and forms a rotating structure with the pull rod.

[0010] Preferably, a cap is hingedly connected to the outer wall of the standard connector, and a lock is rotatably connected to one end of the cap, and the lock is used to lock the cap on the standard connector.

[0011] Preferably, the centralized processing assembly includes a preliminary filtering device and a final filtering device, which are used to filter and remove impurities from the cutting fluid extracted from the lathe.

[0012] Preferably, the centralized processing component also includes a concentration regulator for adjusting the concentration of the cutting fluid re-entering the lathe.

[0013] Preferably, the centralized processing assembly also includes a liquid outlet pump and a liquid inlet pump, which are used to provide power for the circulation of the cutting fluid in the supply and return system.

[0014] Preferably, the centralized processing component also includes a control unit, which is communicatively connected with the preliminary filtering device, the final filtering device, the concentration regulator, the liquid outlet pump, and the liquid inlet pump.

[0015] Preferably, the lathe, the preliminary filtering device, the final filtering device, the concentration regulator, the liquid outlet pump, and the liquid inlet pump are all connected through standard connectors and standard connecting pipes.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model adds standard connectors and standard connecting pipes to enable the cutting fluid supply and return system to achieve fast and stable connections between various devices, reduce installation time and error rate, and ensure high interchangeability between devices, so that during maintenance or upgrades, faulty equipment can be easily replaced without large-scale shutdown of the entire device.

[0018] 2. The utility model adds a telescopic joint, an inner sleeve ring, a sealing spring and an inner liner ring, so that the standard connector and the standard connecting pipe can be tightly connected to ensure that no cutting fluid leakage occurs at the interface.

[0019] 3. The utility model can lock the interconnected marked connecting pipes and standard connecting heads by adding a pull rod, an outer fixing ring, a locking ring and an elliptical buckle, ensuring that the connection between the various devices is sufficiently firm and will not loosen or disconnect during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a centralized cutting fluid supply and return system.

[0021] Figure 2 It is a stereoscopic diagram of a standard connector and a standard connecting pipe of a cutting fluid centralized supply and return system.

[0022] Figure 3 It is a front view of a standard connector and a standard connecting pipe of a cutting fluid centralized supply and return system.

[0023] Figure 4 It is a cross-sectional view at AA of the front view of a standard connector and a standard connecting pipe of a cutting fluid centralized supply and return system.

[0024] Figure 5 It is an exploded view of a standard connector and a standard connecting pipe of a cutting fluid centralized supply and return system.

[0025] Figure 6 It is a three-dimensional diagram of an elliptical clip of a centralized cutting fluid supply and return system.

[0026] Figure 7 This is a three-dimensional diagram of the standard connection head cap of a cutting fluid centralized supply and return system with the cap opened.

[0027] Figure 8 It is a three-dimensional diagram of the standard connection head cap closed for a cutting fluid centralized supply and return system.

[0028] The numbers in the figure are: 1. Lathe; 2. Centralized processing component; 21. Preliminary filtering device; 22. Final filtering device; 23. Concentration regulator; 24. Liquid outlet pump; 25. Liquid inlet pump; 26. Control unit; 3. Standard connection component; 31. Standard connector; 311. Liner ring; 312. Cover cap; 313. Lock; 32. Standard connecting pipe; 321. Telescopic joint; 322. Inner sleeve ring; 323. Sealing spring; 324. Outer fixing ring; 325. Shaft seat; 326. Pull rod; 327. Oval buckle; 33. Locking ring. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1-Figure 8 As shown, a cutting fluid centralized supply and return system includes a lathe 1 and a centralized processing component 2. The centralized processing component 2 is used to extract the cutting fluid in the lathe 1, centrally process it, and pump it back into the lathe 1. It also includes a standard connection component 3 for forming a circuit for the circulation of the cutting fluid. The standard connection component 3 includes a standard connector 31 and a standard connecting pipe 32. The standard connector 31 is used to connect the cutting fluid inlet and outlet of each component of the lathe 1 and the centralized processing component 2. An inner lining ring 311 is provided at one end of the inner wall of the standard connector 31. The standard connecting pipe 32 is used to connect the standard connector 31 or another standard connecting pipe 32. An expansion joint 321 is sleeved on the inner wall of one end of the standard connecting pipe 32. The expansion joint 321 is adapted to the inner wall of the standard connector 31.

[0031] When the standard connecting pipe 32 is connected to the standard connecting head 31, a close connection is achieved by inserting the expansion joint 321 at one end of the standard connecting pipe 32 into the inner wall of the standard connecting head 31, and pressing one end of the expansion joint 321 against the inner lining ring 311 of the inner wall of the standard connecting head 31. An elastic sealing rubber pad is installed on the side of the inner lining ring 311 that contacts the expansion joint 321. The material of the rubber pad can be made of corrosion-resistant rubber material to ensure its service life; and the other side of the inner lining ring 311 adopts a slope structure, that is, it gradually and smoothly transitions to the inner wall of the standard connecting head 31, so that the cutting fluid will not be blocked during the circulation process.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, an inner ring 322 is provided at one end of the inner wall of the standard connecting pipe 32 , and the inner ring 322 is matched with one end of the expansion joint 321 , and the inner ring 322 and the expansion joint 321 are connected via a sealing spring 323 .

[0033] The expansion joint 321 forms a sliding structure through the inner ring 322, the sealing spring 323 and the standard connecting pipe 32. At the same time, the sealing spring 323 can generate an elastic force when the expansion joint 321 contacts the inner liner ring 311, ensuring that the surface of the inner liner ring 311 of the expansion joint 321 is in a tight state, thereby preventing leakage of the cutting fluid. The end of the expansion joint 321 away from the inner liner ring 311 also adopts a slope structure to gradually and smoothly fit with the inner wall of the standard connecting pipe 32, also to ensure that the cutting fluid flows without obstruction.

[0034] like Figure 2 , Figure 4 and Figure 5 As shown, an outer fixing ring 324 is fixed to one end of the outer wall of the standard connecting tube 32, and a plurality of shaft seats 325 are provided on the surface of the outer fixing ring 324. A pull rod 326 is rotatably connected to the shaft seat 325. A locking ring 33 is fixed to the other end of the outer wall of the standard connecting tube 32 and one end of the outer wall of the standard connecting head 31, and one end of the pull rod 326 is adapted to the locking ring 33.

[0035] After the standard connecting pipe 32 is connected to the standard connecting head 31 through the telescopic joint 321, the pull rod 326 on the outer fixed ring 324 can be rotated so that one end of the pull rod 326 is engaged with the locking ring 33 provided on the surface of the standard connecting head 31, thereby fixing the position between the standard connecting pipe 32 and the standard connecting head 31. In addition, the inner wall of the standard connecting pipe 32 is provided with an inner lining ring 311 identical to that in the standard connecting head 31 at one end away from the inner sleeve ring 322. When the standard connecting pipe 32 is connected to another standard connecting pipe 32, the same method as that of the standard connecting head 31 can be used to connect and lock the standard connecting pipe 32 to another standard connecting pipe 32. This method enables quick connection between various devices through the connecting head and the connecting pipe.

[0036] like Figure 4 , Figure 5 and Figure 6 As shown, one end of the pull rod 326 is connected to an elliptical buckle 327 , one end of the elliptical buckle 327 is elliptical, and a rotating structure is formed between the pull rod 326 .

[0037] When one end of the pull rod 326 is engaged with the locking ring 33, start to rotate the elliptical buckle 327 so that the longer end of the elliptical buckle 327 gradually turns toward the locking ring 33, thereby prompting the pull rod 326 to pull the standard connecting tube 32 further toward the standard connecting head 31 or another standard connecting tube 32, which can ensure that the connection between the pull rod 326 and the locking ring 33 is firm, and can also help the connection between the telescopic joint 321 and the liner ring 311 to be more tightly fitted.

[0038] like Figure 2 , Figure 7 and Figure 8As shown, a cover cap 312 is hingedly connected to the outer wall of the standard connector 31 , and a lock buckle 313 is rotatably connected to one end of the cover cap 312 . The lock buckle 313 is used to lock the cover cap 312 on the standard connector 31 .

[0039] When cleaning or replacing the standard connecting tube 32, it is necessary to unplug the standard connecting tube 32 from the standard connecting head 31. At this time, in order to ensure that the cutting fluid inside the equipment does not leak, the cap 312 can be rotated to cover the standard connecting head 31, and the cap 312 and the standard connecting head 31 can be locked by the lock buckle 313 to ensure that the cutting fluid does not leak out of the equipment and pollute the environment.

[0040] like Figure 1 As shown, the centralized processing component 2 includes a preliminary filtering device 21 and a final filtering device 22, which are used to filter and remove impurities from the cutting fluid extracted from the lathe 1.

[0041] The preliminary filtering device 21 generally includes a pre-filter and a magnetic separator. The pre-filter is the most common preliminary filtering device 21, and its main function is to remove large particle impurities in the cutting fluid. These large particle impurities may be chips, sand or other solid particles generated during the processing. The filtering accuracy of the pre-filter is usually around 100um, which can effectively protect the subsequent filtering equipment and prevent it from being blocked by large particle impurities; and the magnetic separator is also a commonly used preliminary filtering device 21. Through the action of the magnetic field, the ferromagnetic substances such as iron chips and steel chips in the cutting fluid are adsorbed and separated. The magnetic separator can effectively remove metal impurities in the cutting fluid and maintain the cleanliness of the cutting fluid. The final filter device 22 generally adopts a centrifugal separator, a fully automatic paper filter and a precision air flotation filter. The centrifugal separator separates impurities and cutting fluid through the centrifugal force of high-speed rotation, and can effectively remove fine impurities in the cutting fluid, including tiny metal particles, non-metallic particles and other suspended matter; the fully automatic paper filter device intercepts impurities in the cutting fluid on the filter paper through automatic paper feeding, and as the filter paper moves, the impurities are taken out of the system; the precision air flotation device uses a high-precision air flotation method to separate and place the unstable and inseparable oil-water mixture on the top to purify the water body. The preliminary filter device 21 and the final filter device 22 can purify and filter the cutting fluid so that it can be put into use again.

[0042] like Figure 1 As shown, the centralized processing component 2 also includes a concentration regulator 23 for adjusting the concentration of the cutting fluid re-entering the lathe 1 .

[0043] In the centralized processing component 2 of the cutting fluid, a concentration regulator 23 is configured according to the specific cutting fluid type, processing requirements and system configuration, which includes but is limited to an automatic fluid replenishment system, a concentration sensor, a manual fluid replenishment or drainage device, a dilution device and a temperature control system. The automatic fluid replenishment system can automatically replenish new cutting fluid according to the actual consumption and concentration change of the cutting fluid; the concentration sensor determines the concentration of the cutting fluid by measuring the conductivity, refractive index or other physical properties of the cutting fluid; the manual fluid replenishment or drainage device is used to supplement the deficiency of the automatic fluid replenishment system, and the dilution device is used to dilute the concentrated cutting fluid. Temperature control is crucial to maintaining the stability and performance of the cutting fluid. Too high a temperature will cause the cutting fluid to evaporate too quickly and increase the concentration, while too low a temperature may affect the performance of the cutting fluid. Therefore, by controlling the temperature of the cutting fluid, its concentration can also be indirectly adjusted.

[0044] like Figure 1 As shown, the centralized processing assembly 2 also includes a liquid outlet pump 24 and a liquid inlet pump 25, which are used to provide power for the cutting fluid to circulate in the supply and return system.

[0045] The liquid outlet pump 24 extracts the cutting fluid in the lathe 1 and pumps it into the preliminary filtering device 21 for the first filtering; the liquid inlet pump 25 pumps the cutting fluid adjusted by the concentration regulator 23 back into the lathe 1.

[0046] like Figure 1 As shown, the centralized processing component 2 also includes a control unit 26 , and the control unit 26 is communicatively connected with the preliminary filtering device 21 , the final filtering device 22 , the concentration regulator 23 , the liquid outlet pump 24 , and the liquid inlet pump 25 .

[0047] The control unit 26 of the centralized processing component 2 is a key part to ensure the efficient and stable operation of the entire system. The control unit 26 is usually responsible for monitoring, regulating and managing various aspects of the cutting fluid, including flow, temperature, concentration, filtration status, etc. It generally collects signals through sensors in each device, and then makes timely responses to control the operation of each device. For example, when the concentration sensor detects that the concentration of the cutting fluid is too low, the sensor transmits the signal to the control unit 26, and the control unit 26 controls the automatic fluid replenishment system in the concentration regulator 23 to replenish the concentrated cutting fluid to increase the concentration of the cutting fluid to be pumped into the lathe 1. The role of the control unit 26 is to achieve precise control and management of the cutting fluid, ensure the performance and stability of the cutting fluid, improve processing efficiency and quality, and reduce production costs.

[0048] like Figure 1 As shown, the lathe 1 , the preliminary filtering device 21 , the final filtering device 22 , the concentration regulator 23 , the liquid outlet pump 24 , and the liquid inlet pump 25 are all connected via a standard connector 31 and a standard connecting pipe 32 .

[0049] The standard connector 31 and the standard connecting pipe 32 enable rapid assembly and docking between the various devices, ensuring that the connection between different devices is fast and stable, reducing installation time and error rate, while ensuring a high degree of interchangeability between the devices, so that during maintenance or upgrades, faulty equipment can be easily replaced without large-scale shutdown of the entire device.

[0050] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A cutting fluid centralized supply and return system, comprising a lathe (1) and a centralized processing component (2), wherein the centralized processing component (2) is used to extract the cutting fluid from the lathe (1), centrally process it, and pump it back into the lathe (1); characterized in that: Also included is a standard connection assembly (3) for forming a circuit for the circulation of cutting fluid; The standard connection assembly (3) comprises a standard connection head (31) and a standard connection pipe (32); The standard connector (31) is used to connect the cutting fluid inlet and outlet of each component of the lathe (1) and the centralized processing assembly (2), and an inner lining ring (311) is provided at one end of the inner wall of the standard connector (31); The standard connecting pipe (32) is used to connect the standard connecting head (31) or another standard connecting pipe (32), and an expansion joint (321) is sleeved on the inner wall of one end of the standard connecting pipe (32); The expansion joint (321) is adapted to the inner wall of the standard connector (31).

2. A cutting fluid centralized supply and return system according to claim 1, characterized in that: An inner ring (322) is provided at one end of the inner wall of the standard connecting pipe (32), and the inner ring (322) is matched with one end of the expansion joint (321); The inner sleeve ring (322) and the expansion joint (321) are connected via a sealing spring (323).

3. A cutting fluid centralized supply and return system according to claim 1, characterized in that: An outer fixing ring (324) is fixed to one end of the outer wall of the standard connecting pipe (32), a plurality of shaft seats (325) are arranged on the surface of the outer fixing ring (324), and a pull rod (326) is rotatably connected to the shaft seat (325); A locking ring (33) is fixed to the other end of the outer wall of the standard connecting pipe (32) and one end of the outer wall of the standard connecting head (31); One end of the pull rod (326) is matched with the locking ring (33).

4. A cutting fluid centralized supply and return system according to claim 3, characterized in that: One end of the pull rod (326) is connected to an elliptical buckle (327), one end of the elliptical buckle (327) is elliptical, and a rotating structure is formed between the pull rod (326).

5. The cutting fluid centralized supply and return system according to claim 1, characterized in that: A cover cap (312) is hingedly connected to the outer wall of the standard connector (31), and one end of the cover cap (312) is rotatably connected to a lock buckle (313), which is used to lock the cover cap (312) on the standard connector (31).

6. A cutting fluid centralized supply and return system according to claim 1, characterized in that: The centralized processing component (2) comprises a preliminary filtering device (21) and a final filtering device (22), which are used to filter and remove impurities from the cutting fluid extracted from the lathe (1).

7. A cutting fluid centralized supply and return system according to claim 6, characterized in that: The centralized processing component (2) also includes a concentration regulator (23) for regulating the concentration of the cutting fluid re-entering the lathe (1).

8. A cutting fluid centralized supply and return system according to claim 7, characterized in that: The centralized processing assembly (2) also includes a liquid outlet pump (24) and a liquid inlet pump (25) for providing power for the circulation of the cutting fluid in the supply and return system.

9. A cutting fluid centralized supply and return system according to claim 8, characterized in that: The centralized processing component (2) also includes a control unit (26), and the control unit (26) is communicatively connected with the preliminary filtering device (21), the final filtering device (22), the concentration regulator (23), the liquid outlet pump (24), and the liquid inlet pump (25).

10. A cutting fluid centralized supply and return system according to claim 9, characterized in that: The lathe (1), the preliminary filtering device (21), the final filtering device (22), the concentration regulator (23), the liquid outlet pump (24), and the liquid inlet pump (25) are all connected via a standard connector (31) and a standard connecting pipe (32).

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