Center water outlet tank for machine tool
By configuring a scroll separator and a basket filter in the outlet tank of the machine tool center and designing a runner, the problem of high cost of filter consumables is solved, and efficient purification and cost reduction of cutting fluid is achieved.
Patent Information
- Application Number
- CN202420862189.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-24
AI Technical Summary
In the existing machine tool center outlet cooling system, filter consumables are costly and need to be replaced frequently, which affects the efficiency and economy of the system.
A central outlet water tank including a secondary and a third-level water tank is designed, with a vortex separator and a basket filter, and a flow is set between the area below the basket filter and the central outlet pump position and the outer cooling pump position. to promote the separation and precipitation of impurities in the cutting fluid and avoid changing the filter consumables.
It realizes efficient purification of cutting fluid, reduces production and use costs, extends the service life of the filtration system, and improves the quality of cutting fluid.
Smart Images
Figure CN222359810U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of machine tool water tanks, and in particular relates to a central water outlet water tank for machine tools. Background Art
[0002] A large amount of heat is generated during the machining process of machine tools. The traditional cooling method is to spray the cutting fluid onto the surface of the workpiece and the tool to cool it, which is called external cooling. Center water discharge means that the cutting fluid passes through the rotating spindle and tool and is sprayed from the center or bottom side edge of the tool to cool the tool and workpiece. This is also called internal cooling. Generally, the center water discharge pressure is higher. Compared with external cooling, center water discharge can force chip removal, facilitate chip breaking, solve the problem of entangled chips, effectively reduce the problem of excessive local temperature during machining, extend tool life, and effectively increase cutting speed. Therefore, the center water discharge cooling method has been more and more widely used.
[0003] The center water outlet is transferred from the static pipeline to the rotating spindle, which needs to pass through a rotary joint. The rotary joint has certain requirements for the cutting fluid passing through it. Generally, it needs to contain impurities below 50μm. At the same time, impurities will also damage the pipeline, tool and workpiece, so the cutting fluid must be filtered. The usual practice is to set up a separate water tank for the center water outlet high-pressure pump, that is, a secondary water tank, and use a lifting pump to transport the cutting fluid from the main water tank of the machine tool to the secondary water tank. The cutting fluid first passes through the vortex separator for primary filtration, then passes through the bag filter for secondary filtration, and finally reaches the secondary water tank. For some high-pressure pumps with strong pollution resistance, bag filters can be omitted and pipeline filters can be set after the high-pressure pump instead. Whether it is a bag filter or a pipeline filter, there are problems of high cost and the need to replace consumables periodically, especially pipeline filters. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a central water outlet tank for machine tools in view of the deficiencies in the prior art. By configuring a vortex separator and a basket filter and designing a flow channel, the separation and precipitation of impurities in the cutting fluid are promoted, and there is no need to replace filter consumables, and the manufacturing cost and use cost are low.
[0005] The technical solution adopted by the utility model to solve the above technical problems is: a central water outlet water tank for machine tools, including a secondary water tank, a lifting and filtering device and a tertiary water tank, the side wall of the secondary water tank is provided with a water inlet, a first overflow port, a first drain port and a vortex sewage chamber, the top plate of the secondary water tank is provided with a first liquid level gauge and a chip flushing pump position, the water inlet is connected to the primary lifting pump on the main water tank of the machine tool, the first overflow port is connected to the main water tank of the machine tool, the lifting and filtering device includes a secondary lifting pump, a vortex separator and a basket-type filter, the secondary lifting pump and the vortex separator are respectively installed on the top plate of the secondary water tank, the secondary lifting pump is connected to the inlet of the vortex separator, the The sewage outlet of the vortex separator is connected to the inlet of the vortex sewage chamber through a joint, the outlet of the vortex sewage chamber is connected to the first overflow port, the clean water outlet of the vortex separator is connected to the inlet of the basket-type filter screen, the basket-type filter screen is installed on the top plate of the three-stage water tank, the side wall of the three-stage water tank is provided with a second overflow port and a second drain port, the second overflow port is communicated with the inner cavity of the two-stage water tank, the top plate of the three-stage water tank is provided with a second liquid level gauge, a central water outlet pump position and an external cooling pump position, a flow channel is provided in the inner cavity of the three-stage water tank, and the flow channel is provided between the lower area of the basket-type filter screen and the lower area of the central water outlet pump position and the external cooling pump position.
[0006] The lifting and filtering device of the central water outlet water tank of the utility model is equipped with a vortex separator and a basket-type filter, and a flow channel is designed between the lower area of the basket-type filter and the lower area of the central water outlet pump position and the external cooling pump position to promote the separation and precipitation of impurities in the cutting fluid. There is no need to replace filtering consumables, and the manufacturing cost and use cost are low.
[0007] The central water outlet tank of the utility model is divided into a secondary water tank and a tertiary water tank, and the cutting fluid in the secondary water tank is transported to the vortex separator through the secondary lifting pump; after the cutting fluid is processed by the vortex separator, the sewage enters the vortex separation sewage chamber, and together with the excess cutting fluid overflowing from the secondary water tank, it flows back to the main water tank of the machine tool through the first overflow port, and the clean cutting fluid leads to the basket-type filter; after the cutting fluid is filtered by the basket-type filter, it flows downward into the lower area of the basket-type filter, and enters the lower area of the central water outlet pump position and the external cooling pump position through the flow channel, and the impurities in the cutting fluid will be precipitated to a certain extent in the flow channel, so as to achieve a better effect of purifying the cutting fluid; after the purified cutting fluid enters the lower area of the central water outlet pump position and the external cooling pump position, it can be used for central water outlet and external cooling, and the primary lifting pump transports the cutting fluid in the main water tank of the machine tool to the secondary water tank, which can be used for chip flushing and spraying.
[0008] Due to the design of the second overflow port, even if the secondary lifting pump is always started, the third-level water tank will not have cutting fluid overflow if the central water pump installed at the central water pump position and the external cooling pump installed at the external cooling pump position are not started, which is convenient for the logical control of the secondary lifting pump. Similarly, due to the design of the first overflow port, even if the first-level lifting pump is always started, the secondary water tank will not have cutting fluid overflow if the central water pump, external cooling pump, and chip flushing pump are not started.
[0009] The secondary water tank of the central water outlet water tank of the utility model is equivalent to the extended water tank of the machine tool main water tank (ie the primary water tank), which is convenient for the compact design of the machine tool main water tank connected with the chip conveyor.
[0010] Similar to the water tank equipped with bag filter or pipe filter, the secondary water tank and tertiary water tank of the central water outlet water tank of the utility model also need to be cleaned regularly, and the first drain port and the second drain port are used for draining water when cleaning the water tank.
[0011] Preferably, a first partition and a second partition are provided in the inner cavity of the three-stage water tank, the first partition divides the inner cavity of the three-stage water tank into a front cavity and a rear cavity, a notch is provided on the upper right side of the first partition, the front cavity and the rear cavity are communicated through the notch, the second partition is vertically fixed to the rear side surface of the first partition, the top of the second partition is fixed to the top plate of the three-stage water tank, a gap is provided between the bottom of the second partition and the bottom plate of the three-stage water tank, the second partition is located in the rear cavity, the second partition divides the rear cavity into a left cavity and a right cavity, the left cavity and the right cavity are communicated through the gap, the basket-type filter is arranged at the upper part of the left cavity, the central water outlet pump position and the external cooling pump position are arranged directly above the front cavity, the lower area of the basket-type filter, the gap and the area of the right cavity flush with the bottom of the notch are sequentially connected to form the flow channel. With the above design, the cutting fluid flows downward into the area below the basket filter, flows horizontally for a distance, enters the right cavity from the gap below the second partition, and finally flows over the plate below the notch of the first partition before flowing into the area below the central water outlet pump position and the external cooling pump position. The flow channel formed by the above first partition and second partition design has a simple structure and has a good precipitation effect on impurities in the cutting fluid.
[0012] Preferably, the basket filter includes a basket body and a cover plate, the upper part of the basket body is open, the cover plate is fixed at the upper opening of the basket body, the cover plate is flush with the top plate of the three-stage water tank, a handle is installed on the cover plate, the inlet of the basket filter is arranged on the cover plate, the basket body includes a stainless steel frame and a stainless steel filter, the stainless steel filter is fixed to the stainless steel frame, a handle is installed on the top of the stainless steel frame, a bracket is fixed in the inner cavity of the three-stage water tank, and the basket body is placed on the bracket. The above basket filter has a large flux, good filtering effect, and is easy to extract and clean.
[0013] Preferably, the secondary water tank and the tertiary water tank share a common side wall, and the second overflow port is arranged at the top of the common side wall.
[0014] Compared with the prior art, the utility model has the following advantages: the lifting and filtering device of the central water outlet water tank for machine tools of the utility model is equipped with a vortex separator and a basket-type filter, and a flow channel is designed between the lower area of the basket-type filter and the lower area of the central water outlet pump position and the external cooling pump position to promote the separation and precipitation of impurities in the cutting fluid, without the need to replace filter consumables, and the manufacturing cost and use cost are low. The cutting fluid purified by the central water outlet water tank can be used for central water outlet and external cooling, and the first-level lifting pump transports the cutting fluid in the main water tank of the machine tool to the second-level water tank for chip flushing and spraying. The second-level water tank of the central water outlet water tank is equivalent to the extended water tank of the main water tank of the machine tool (i.e., the first-level water tank), which is convenient for the compact design of the main water tank of the machine tool connected to the chip conveyor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A front view of the internal structure of the central water outlet tank of the embodiment;
[0016] Figure 2 A back view of the internal structure of the central water outlet tank of the embodiment;
[0017] Figure 3 Schematic diagram of the appearance of the basket body of the basket filter in the embodiment;
[0018] Figure 4 A back view of the internal structure of the central water outlet water tank of an embodiment with a flow path of the cutting fluid in the flow channel;
[0019] The specific reference numerals in the figure are as follows:
[0020] 1-secondary water tank, 11-water inlet, 12-first overflow port, 13-first drain port, 14-vortex sewage chamber, 15-first liquid level gauge, 16-chip flushing pump position, 2-lifting filter device, 21-secondary lifting pump, 22-vortex separator, 23-basket filter, 24-basket body, 25-cover plate, 26-handle, 27-stainless steel frame, 28-stainless steel filter, 29-handle, 3-third-level water tank, 31-second overflow port, 32-second drain port, 33-common side wall, 34-second liquid level gauge, 35-central water outlet pump position, 36-external cooling pump position, 37-bracket, 41-first partition, 42-second partition, 43-notch, 44-gap. DETAILED DESCRIPTION
[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] The central water outlet water tank for machine tools of the embodiment is as follows: Figure 1-Figure 3 As shown, it includes a secondary water tank 1, a lifting and filtering device 2 and a tertiary water tank 3. The side wall of the secondary water tank 1 is provided with a water inlet 11, a first overflow port 12, a first drain port 13 and a vortex separation sewage chamber 14. The top plate of the secondary water tank 1 is provided with a first liquid level gauge 15 and a chip pump position 16 for installing a chip pump. The water inlet 11 is connected to the primary lifting pump on the main water tank of the machine tool. The first overflow port 12 is connected to the main water tank of the machine tool. The lifting and filtering device 2 includes a secondary lifting pump 21, a vortex separator 22 and a basket filter 23. The secondary lifting pump 21 and the vortex separator 22 are respectively installed on the top plate of the secondary water tank 1. The secondary lifting pump 21 is connected to the inlet of the vortex separator 22. The sewage outlet of the vortex separator 22 is connected to the inlet of the vortex separation sewage chamber 14 through a joint. The vortex separation sewage chamber 14 The outlet is connected to the first overflow port 12, the clean water outlet of the vortex separator 22 is connected to the inlet of the basket filter 23, the basket filter 23 is installed on the top plate of the tertiary water tank 3, the side wall of the tertiary water tank 3 is provided with a second overflow port 31 and a second drain port 32, the second overflow port 31 is communicated with the inner cavity of the secondary water tank 1, the secondary water tank 1 and the tertiary water tank 3 share a common side wall 33, the second overflow port 31 is arranged on the top of the common side wall 33, the top plate of the tertiary water tank 3 is provided with a second liquid level gauge 34, a central water outlet pump position 35 for installing a central water outlet pump and an external cooling pump position 36 for installing an external cooling pump, a flow channel is provided in the inner cavity of the tertiary water tank 3, and the flow channel is arranged between the lower area of the basket filter 23 and the lower area of the central water outlet pump position 35 and the external cooling pump position 36.
[0023] In this embodiment, a first partition 41 and a second partition 42 are provided in the inner cavity of the three-stage water tank 3. The first partition 41 divides the inner cavity of the three-stage water tank 3 into a front cavity and a rear cavity. A notch 43 is provided on the upper right side of the first partition 41. The front cavity and the rear cavity are connected through the notch 43. The second partition 42 is vertically fixed to the rear side of the first partition 41. The top of the second partition 42 is fixed to the top plate of the three-stage water tank 3. The bottom of the second partition 42 is fixed to the three-stage water tank 3. There is a gap 44 between the bottom plates, the second partition 42 is located in the rear cavity, the second partition 42 divides the rear cavity into a left cavity and a right cavity, the left cavity and the right cavity are connected through the gap 44, the basket-type filter screen 23 is arranged at the upper part of the left cavity, the central water outlet pump position 35 and the external cooling pump position 36 are arranged directly above the front cavity, and the lower area of the basket-type filter screen 23, the gap 44 and the area of the right cavity flush with the bottom of the notch 43 are connected in sequence as a flow channel.
[0024] In this embodiment, the basket-type filter screen 23 includes a basket body 24 and a cover plate 25. The upper part of the basket body 24 is open, and the cover plate 25 is fixed at the upper opening of the basket body 24. The cover plate 25 is flush with the top plate of the tertiary water tank 3. A handle 26 is installed on the cover plate 25. The inlet of the basket-type filter screen 23 is set on the cover plate 25. The basket body 24 includes a stainless steel frame 27 and an 80-mesh stainless steel filter screen 28. The stainless steel filter screen 28 is fixed to the stainless steel frame 27. A handle 29 is installed on the top of the stainless steel frame 27. A bracket 37 is fixed in the inner cavity of the tertiary water tank 3, and the basket body 24 is placed on the bracket 37.
[0025] Similar to the water tank equipped with bag filter or pipe filter, the secondary water tank 1 and the tertiary water tank 3 of the above-mentioned central water outlet water tank also need to be cleaned regularly, and the first drain port 13 and the second drain port 32 are used for draining water when cleaning the water tank. In this embodiment, the first drain port 13 and the second drain port 32 are respectively arranged at the bottom of the side wall of the secondary water tank 1 and the tertiary water tank 3.
[0026] In order to prevent the secondary lift pump 21 from idling, the first liquid level gauge 15 can be set with a low liquid level alarm. Through conventional logic control, when the secondary water tank 1 is at a low liquid level, the secondary lift pump 21 and the chip flushing pump stop working. Similarly, the second liquid level gauge 34 can also be set with a low liquid level alarm. Through conventional logic control, when the tertiary water tank 3 is at a low liquid level, the central water outlet pump and the external cooling pump stop working.
[0027] Due to the design of the second overflow port 31, even if the secondary lift pump 21 is always started, the tertiary water tank 3 will not have cutting fluid overflow when the central water outlet pump installed at the central water outlet pump position 35 and the external cooling pump installed at the external cooling pump position 36 are not started, which facilitates the logic control of the secondary lift pump 21. Similarly, due to the design of the first overflow port 12, even if the primary lift pump is always started, the secondary water tank 1 will not have cutting fluid overflow when the central water outlet pump, the external cooling pump, and the chip flushing pump are not started.
[0028] The working principle of the central water outlet tank for the machine tool is as follows: the cutting fluid in the secondary water tank 1 is transported to the vortex separator 22 through the secondary lifting pump 21; after the cutting fluid is processed by the vortex separator 22, the sewage flows into the vortex sewage chamber 14, and together with the excess cutting fluid overflowing from the secondary water tank 1, it flows back to the main water tank of the machine tool through the first overflow port 12, while the clean cutting fluid flows to the basket filter 23. Figure 4 The dotted line with an arrow in the middle is the flow route of the cutting fluid entering the basket-type filter 23 and entering the area below the central water outlet pump position 35 and the external cooling pump position 36 through the flow channel. As shown in the flow route, after the cutting fluid is filtered by the basket-type filter 23, it flows downward into the area below the basket-type filter 23, first flows horizontally for a distance, then enters the right cavity from the gap 44 below the second partition 42, and finally crosses the plate body of the first partition 41 located below the notch 43 before flowing into the area below the central water outlet pump position 35 and the external cooling pump position 36. Impurities in the cutting fluid will be precipitated to a certain extent in the flow channel, achieving a better effect of purifying the cutting fluid; after the purified cutting fluid enters the area below the central water outlet pump position 35 and the external cooling pump position 36, it can be used for central water outlet and external cooling, and the first-stage lifting pump transports the cutting fluid in the main water tank of the machine tool to the second-stage water tank 1 for chip flushing and spraying.
Claims
1. A central water outlet tank for a machine tool, characterized in that: The invention comprises a secondary water tank, a lifting and filtering device and a tertiary water tank, wherein the side wall of the secondary water tank is provided with a water inlet, a first overflow port, a first drain port and a vortex-separated sewage chamber, the top plate of the secondary water tank is provided with a first liquid level gauge and a chip flushing pump position, the water inlet is connected to a primary lifting pump on a main water tank of a machine tool, the first overflow port is connected to the main water tank of the machine tool, the lifting and filtering device comprises a secondary lifting pump, a vortex separator and a basket-type filter screen, the secondary lifting pump and the vortex separator are respectively installed on the top plate of the secondary water tank, the secondary lifting pump is connected to the inlet of the vortex separator, the sewage outlet of the vortex separator is connected to the vortex separator via a joint. The inlet of the sewage separation chamber is connected, the outlet of the vortex sewage separation chamber is connected to the first overflow port, the clean water outlet of the vortex separator is connected to the inlet of the basket-type filter screen, the basket-type filter screen is installed on the top plate of the three-stage water tank, the side wall of the three-stage water tank is provided with a second overflow port and a second drain port, the second overflow port is communicated with the inner cavity of the secondary water tank, the top plate of the three-stage water tank is provided with a second liquid level gauge, a central water outlet pump position and an external cooling pump position, a flow channel is provided in the inner cavity of the three-stage water tank, and the flow channel is provided between the lower area of the basket-type filter screen and the lower area of the central water outlet pump position and the external cooling pump position.
2. A central water outlet tank for machine tools according to claim 1, characterized in that: A first partition and a second partition are provided in the inner cavity of the three-stage water tank, the first partition divides the inner cavity of the three-stage water tank into a front cavity and a rear cavity, a notch is provided on the upper right side of the first partition, the front cavity and the rear cavity are communicated through the notch, the second partition is vertically fixed to the rear side of the first partition, the top of the second partition is fixed to the top plate of the three-stage water tank, a gap is provided between the bottom of the second partition and the bottom plate of the three-stage water tank, the second partition is located in the rear cavity, the second partition divides the rear cavity into a left cavity and a right cavity, the left cavity and the right cavity are communicated through the gap, the basket-type filter is arranged at the upper part of the left cavity, the central water outlet pump position and the external cooling pump position are arranged directly above the front cavity, the lower area of the basket-type filter, the gap and the area of the right cavity flush with the bottom of the notch are sequentially connected as the flow channel.
3. A central water outlet tank for machine tools according to claim 1, characterized in that: The basket-type filter screen comprises a basket body and a cover plate, the upper part of the basket body is open, the cover plate is fixed at the upper opening of the basket body, the cover plate is flush with the top plate of the three-stage water tank, a handle is installed on the cover plate, the inlet of the basket-type filter screen is arranged on the cover plate, the basket body comprises a stainless steel frame and a stainless steel filter screen, the stainless steel filter screen is fixed to the stainless steel frame, a handle is installed on the top of the stainless steel frame, a bracket is fixed in the inner cavity of the three-stage water tank, and the basket body is placed on the bracket.
4. A central water outlet tank for machine tools according to claim 1, characterized in that: The secondary water tank and the tertiary water tank share a common side wall, and the second overflow port is arranged on the top of the common side wall.