A filtering device for CNC machine tools

Abstract

The present invention relates to the technical field of filtering devices, and specifically to a filtering device for CNC machine tools, comprising a filter cartridge and a filtering mechanism, wherein an upper partition and a lower partition are arranged in the filter cartridge. A flow space is defined between the upper partition and the lower partition, and the flow space is connected to an inlet. The filtering mechanism comprises a filter screen, a support frame and a movable plate, wherein the support frame is installed in the filter cartridge, and the upper and lower ends of the filter screen are respectively referred to as a head end and a tail end, wherein the head end is connected to the upper partition, and the tail end is connected to the lower partition after being wound on both ends of the support frame. The movable plate is installed in a filter chamber, and the filter chamber is divided into an upper chamber and a lower chamber. A filtering device for CNC machine tools of the present invention increases the overall use time of the filtering device for CNC machine tools and improves work efficiency by arranging a filtering mechanism in the filter cartridge, and the upper chamber and the lower chamber work in sequence.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, and in particular to a filtering device for a numerically controlled machine tool. Background Art

[0002] After machining, CNC machine tools cannot do without the participation of filtering devices. The filtering devices can not only filter the exhaust gas generated by the CNC machine tools, but also filter the waste liquids generated by them.

[0003] Taking liquid filtration as an example, during the machining process of CNC machine tools, coolant will be injected to assist in heat dissipation and processing. However, impurities such as iron filings and dust generated during the machining process will be mixed into the coolant. In order to ensure the processing quality, the used coolant is generally discharged directly to the outside, which wastes resources. Even if it is discharged directly, the impurities in the coolant can easily clog the drain pipe. Therefore, the coolant discharged from the CNC machine tools needs to be recovered and filtered through a filtering device to filter out the impurities for subsequent processing.

[0004] When working, the existing filtering device generally uses a filter screen for filtering. However, during filtering, impurities are easily accumulated on the screen, which can easily cause the filter screen to be blocked. After being blocked, the filter screen cannot continue to work, resulting in that most filtering devices can only be used once and the usage time is short, which affects the working efficiency of the filtering device. Summary of the invention

[0005] The invention provides a filtering device for a numerically controlled machine tool, so as to solve the problem that most existing filtering devices can only be used once, cannot continue to work after being blocked, have a short service life, and affect the working efficiency of the filtering device.

[0006] A filtering device for a CNC machine tool of the present invention adopts the following technical scheme: a filtering device for a CNC machine tool comprises a filter cartridge and a filtering mechanism, the filter cartridge is arranged along a first direction, the first direction is a vertical direction; an inlet is provided at the upper end of the filter cartridge, and outlets are provided at the upper and lower ends of the filter cartridge, and an upper partition and a lower partition are fixedly arranged in sequence in the filter cartridge along the first direction; a flow space is defined between the upper partition and the lower partition, and the flow space is connected to the inlet; the filtering mechanism comprises a filter screen, a support frame and a movable plate, the support frame is installed in the filter cartridge, the upper and lower ends of the filter screen are respectively referred to as a head end and a tail end, the head end is connected to the upper partition, and the tail end is sequentially wound around the upper and lower ends of the support frame along the first direction and then connected to the lower partition, the filter screens located on both sides of the support frame along the second direction are respectively referred to as an inner screen and an outer screen, and the inner screen is located on the outer screen close to the support frame in the second direction. On one side of the central axis of the support frame, the second direction is perpendicular to the first direction, and a filter chamber is defined between the inner net and the outer net. The movable plate is installed in the filter chamber, and the filter chamber is divided into an upper chamber and a lower chamber arranged in sequence along the first direction. The upper chamber is located on the side of the lower chamber close to the inlet in the first direction, and the movable plate can be slidably arranged along the first direction; the filter mechanism has a first state and a second state. When in the first state, the movable plate restricts the liquid from entering the lower chamber through the flow space, and the liquid can enter the upper chamber through the flow space. When in the second state, the movable plate restricts the liquid from entering the upper chamber through the flow space, and the liquid can enter the lower chamber through the flow space. In the initial state, the filter mechanism is in the first state, and the sliding of the movable plate along the first direction can switch the filter mechanism from the first state to the second state.

[0007] Furthermore, the support frame can move along the first direction in the filter chamber, and the movable plate is fixedly connected to the filter screen and slidably cooperates with the support frame. Therefore, when the support frame moves along the first direction in the filter chamber, the filter screen can move along with the support frame in the first direction while rotating around the support frame. The inner wall surfaces at the upper and lower ends of the filter cartridge are respectively called the upper wall surface and the lower wall surface. The upper wall surface is located on the side of the lower wall surface close to the inlet in the first direction, and the filter screen can respectively abut against the upper wall surface and the lower wall surface when moving along the first direction, and form a seal between the upper wall surface and the lower wall surface.

[0008] Furthermore, the support frame includes an upper support ring, a lower support ring and a plurality of support columns, the upper support ring is located on the side of the lower support ring close to the inlet in the first direction, the upper support ring and the lower support ring are connected by a plurality of support columns, and the support columns are arranged along the first direction; bosses are arranged on the upper wall surface and the lower wall surface, and annular grooves are opened on the bosses, the upper support ring and the lower support ring have the same shape, and the upper support ring and the lower support ring can abut against and seal with the corresponding annular grooves; the movable plate is slidably installed on the support column.

[0009] Furthermore, the movable plate can slide along the first direction to abut against the upper partition or the lower partition respectively, and when the movable plate abuts against the lower partition, the filter mechanism is in a first state, at which time the filter can abut against the lower wall surface; when the movable plate abuts against the upper partition, the filter mechanism is in a second state, at which time the filter can abut against the upper wall surface.

[0010] Furthermore, the movable plate is a hollow structure, and the movable plate includes a first plate segment and a second plate segment, the first plate segment and the second plate segment are arranged in sequence in the second direction, and the first plate segment is located on a side of the second plate segment away from the central axis of the filter cartridge in the second direction; the first plate segment and the second plate segment are connected by a connecting rod, and the connecting rod is arranged along the second direction and there are multiple connecting rods, and the multiple connecting rods are evenly distributed around the first direction between the first plate segment and the second plate segment, and a first notch and a second notch are defined between the first plate segment and the second plate segment, the first notch and the second notch are arranged in sequence in the first direction, and the first notch is located on a side of the second notch close to the inlet in the first direction, and the first notch and the second notch are connected in the first direction, thereby defining a sliding space inside the movable plate; a sliding plate is arranged in the sliding space, and the sliding plate can slide along the first direction and block the first notch or the second notch; and when the filtering mechanism is in the first state, the sliding plate blocks the first notch, and the second notch is connected to the inside of the movable plate, and when the filtering mechanism is in the second state, the sliding plate blocks the second notch, and the first notch is connected to the inside of the movable plate.

[0011] Furthermore, the upper and lower end faces of the movable plate are respectively called the upper end face and the lower end face, the upper end face is located on the side of the lower end face close to the inlet in the first direction, a first magnet is arranged on the upper partition, and a second magnet is arranged on the upper end face of the movable plate, the first magnet and the second magnet repel each other, so that the upper partition can cause the movable plate to move along the first direction to the side away from the upper partition until the second gap is blocked; a third magnet is arranged on the lower partition, and a fourth magnet is arranged on the lower end face of the movable plate, the third magnet and the fourth magnet repel each other, so that the lower partition can cause the movable plate to move along the first direction to the side away from the lower partition until the first gap is blocked.

[0012] Furthermore, a sliding groove is provided on the sliding plate, the sliding groove is arranged along the first direction, and the connecting rod is slidably matched with the sliding groove.

[0013] Furthermore, a collecting chamber is provided on the lower supporting ring.

[0014] Furthermore, each supporting column is provided with a locking protrusion, and the movable plate is provided with a locking slot, and the locking protrusion can be locked with the locking slot.

[0015] Furthermore, an extension tube is fixedly connected to the inlet, the extension tube is arranged along the first direction, the upper partition is fixedly connected to the extension tube, and the lower partition is fixedly connected to the upper partition through a connecting column, and the connecting column is arranged along the first direction and there are multiple ones.

[0016] The beneficial effects of the present invention are as follows: a filter device for a numerically controlled machine tool of the present invention is provided with a filter mechanism in a filter cartridge, and the filter mechanism is in a first state in an initial state. At this time, when liquid enters the flow space from the inlet, the movable plate restricts the liquid from entering the lower chamber through the flow space, so the liquid will enter the upper chamber through the flow space, and after filtering through the inner net and the outer net where the upper chamber is located, it flows out to the filter cartridge to complete filtering, and the filtered liquid will be discharged through the outlet on the filter cartridge. When the filter screen where the upper chamber is located is blocked, the movable plate is moved in the first direction to switch the filter mechanism to a second state, which is the same as the filtering principle of the filter mechanism in the first state. When the filter mechanism is in the second state, at this time, when liquid enters the flow space from the inlet, the movable plate restricts the liquid from entering the upper chamber through the flow space, so the liquid will enter the lower chamber through the flow space, and after filtering through the inner net and the outer net where the lower chamber is located, it flows out to the filter cartridge to complete filtering, and the filtered liquid will be discharged through the outlet on the filter cartridge. The upper chamber and the lower chamber work in sequence, which increases the overall use time of the filter device for numerically controlled machine tools and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a filtering device for a CNC machine tool of the present invention;

[0019] Figure 2 A disassembled diagram of the overall structure of an embodiment of a filtering device for a numerically controlled machine tool of the present invention;

[0020] Figure 3 A front view of the overall structure of an embodiment of a filtering device for a numerically controlled machine tool of the present invention;

[0021] Figure 4 for Figure 3 Sectional view along AA;

[0022] Figure 5 for Figure 4 The enlarged view of the X in the middle;

[0023] Figure 6 A schematic diagram of a filter mechanism of an embodiment of a filter device for a numerically controlled machine tool of the present invention when the filter mechanism is in a second state;

[0024] Figure 7 for Figure 6 The enlarged view of the Y position in the middle;

[0025] Figure 8 for Figure 3 Sectional view along the middle line BB;

[0026] Fig. 9 for Figure 8 Enlarged view of the middle Z;

[0027] Fig.10 The figure is a schematic diagram of a support frame of an embodiment of a filtering device for a CNC machine tool of the present invention.

[0028] In the figure: 100, filter cartridge; 101, inlet; 102, outlet; 103, extension tube; 104, boss; 110, upper partition; 120, lower partition; 200, filtering mechanism; 210, filter screen; 220, support frame; 221, upper support ring; 222, lower support ring; 223, support column; 224, latch; 230, movable plate; 231, first plate section; 232, second plate section; 234, cavity; 235, first notch; 236, second notch; 237, keyway; 238, connecting rod; 240, upper chamber; 250, lower chamber; 260, sliding plate; 261, sliding key; 270, collecting chamber. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] An embodiment of a filtering device for a numerically controlled machine tool of the present invention is as follows Figures 1 to 10 shown.

[0031] A filtering device for a numerically controlled machine tool comprises a filter cartridge 100 and a filtering mechanism 200. The filter cartridge 100 is arranged along a first direction, which is a vertical direction. An inlet 101 is provided at the upper end of the filter cartridge 100, and outlets 102 are provided at both the upper and lower ends of the filter cartridge 100. Liquid can enter the filter cartridge 100 from the inlet 101 and be discharged from the filter cartridge 100 through the outlet 102. The inside of the filter cartridge 100 is always filled with liquid. An upper partition 110 and a lower partition 120 are fixedly arranged in sequence in the filter cartridge 100 along the first direction. The upper partition 110 is located on the side of the lower partition 120 close to the inlet 101 in the first direction. A flow space is defined between the upper partition 110 and the lower partition 120, and the flow space is connected to the inlet 101.

[0032] The filtering mechanism 200 includes a filter screen 210, a support frame 220 and a movable plate 230. The support frame 220 is installed in the filter cartridge 100. The upper and lower ends of the filter screen 210 are respectively called the head end and the tail end. The head end is connected to the upper partition 110, and the tail end is sequentially arranged on the upper and lower ends of the support frame 220 along the first direction and then connected to the lower partition 120. A sealing strip is provided at the connection between the head end of the filter screen 210 and the upper partition 110, and a sealing strip is provided at the connection between the tail end of the filter screen 210 and the lower partition 120 to improve the sealing of the connection.

[0033] The filter screens 210 located on both sides of the support frame 220 along the second direction are respectively called inner screen and outer screen. The inner screen is located on the side of the outer screen close to the central axis of the support frame 220 in the second direction. The second direction is perpendicular to the first direction. A filter chamber is defined between the inner screen and the outer screen. The movable plate 230 is installed in the filter chamber, and the filter chamber is divided into an upper chamber 240 and a lower chamber 250 which are arranged in sequence along the first direction. The upper chamber 240 is located on the side of the lower chamber 250 close to the inlet 101 in the first direction, and the movable plate 230 can be slidably arranged along the first direction.

[0034] The filter mechanism 200 has a first state and a second state. When in the first state, the movable plate 230 restricts the liquid from entering the lower chamber 250 through the flow space, and the liquid can enter the upper chamber 240 through the flow space. When in the second state, the movable plate 230 restricts the liquid from entering the upper chamber 240 through the flow space, and the liquid can enter the lower chamber 250 through the flow space. In the initial state, the filter mechanism 200 is in the first state, and the movable plate 230 sliding along the first direction can switch the filter mechanism 200 from the first state to the second state.

[0035] In this embodiment, a filter mechanism 200 is arranged in the filter cartridge 100. When in use, the two outlets 102 are first closed, and the filtered liquid is poured into the inlet 101 to fill the entire filter cartridge 100. Then the outlet 102 is opened, and the inlet 101 is kept filled with liquid (unfiltered). Since the filter mechanism 200 is in the first state in the initial state, when the liquid enters the flow space from the inlet 101, the movable plate 230 restricts the liquid from entering the lower chamber 250 through the flow space. Therefore, the liquid will enter the upper chamber 240 through the flow space, and after being filtered by the inner and outer nets of the upper chamber 240, it will flow out to the filter cartridge 100 to complete the filtration. The filtered liquid will be discharged through the outlet 102 on the filter cartridge 100.

[0036] When the filter screen 210 where the upper chamber 240 is located is blocked, the movable plate 230 is moved in the first direction to switch the filter mechanism 200 to the second state. The filtering principle is the same as that of the filter mechanism 200 in the first state. When the filter mechanism 200 is in the second state, when the liquid enters the flow space from the inlet 101, the movable plate 230 restricts the liquid from entering the upper chamber 240 through the flow space. Therefore, the liquid will enter the lower chamber 250 through the flow space, and after being filtered by the inner and outer nets where the lower chamber 250 is located, it will flow out to the filter cartridge 100 to complete the filtration. The filtered liquid will be discharged through the outlet 102 on the filter cartridge 100. The upper chamber 240 and the lower chamber 250 work in sequence, which increases the overall use time of the filtering device for CNC machine tools and improves work efficiency.

[0037] Specifically, the upper partition 110 and the lower partition 120 are both circular plates, an extension tube 103 is fixedly connected to the inlet 101, the extension tube 103 is arranged along the first direction, the upper partition 110 is fixedly connected to the extension tube 103, and the lower partition 120 is fixedly connected to the upper partition 110 through a connecting column, and the connecting column is arranged along the first direction and there are multiple ones.

[0038] In this embodiment, the support frame 220 can move in the first direction in the filter chamber, and the movable plate 230 is fixedly connected to the filter screen 210 and slidably cooperates with the support frame 220, so that when the support frame 220 moves in the first direction in the filter chamber, the filter screen 210 can move along the first direction with the support frame 220 and rotate around the support frame 220. The inner wall surfaces at the upper and lower ends of the filter cartridge 100 are respectively referred to as the upper wall surface and the lower wall surface, and the upper wall surface is located on the side of the lower wall surface close to the inlet 101 in the first direction, and the filter screen 210 can move in the first direction and abut against the upper wall surface and the lower wall surface, respectively, and form a seal with the upper wall surface and the lower wall surface.

[0039] Specifically, the support frame 220 includes an upper support ring 221, a lower support ring 222 and a plurality of support columns 223. The upper support ring 221 is located on the side of the lower support ring 222 close to the inlet 101 in the first direction. The upper support ring 221 and the lower support ring 222 are connected by a plurality of support columns 223, and the support columns 223 are arranged along the first direction. Bosses 104 are arranged on the upper wall surface and the lower wall surface, and an annular groove is opened on the boss 104. The upper support ring 221 and the lower support ring 222 have the same shape, and the upper support ring 221 and the lower support ring 222 can abut against the annular grooves corresponding to them and seal each other. The movable plate 230 is slidably installed on the support column 223.

[0040] Furthermore, each support column 223 is provided with a latching protrusion 224, and the movable plate 230 is provided with a latching slot, and the latching protrusion 224 can be engaged with the latching slot, so that the support column 223 can move along the first direction relative to the movable plate 230 only after being acted upon by a certain force, thereby realizing mutual limitation of the support column 223 and the movable plate 230.

[0041] In this embodiment, the movable plate 230 can slide along the first direction to abut against the upper partition 110 or the lower partition 120, and when the movable plate 230 abuts against the lower partition 120, the filter mechanism 200 is in the first state, and the filter screen 210 can abut against the lower wall surface. When the movable plate 230 abuts against the upper partition 110, the filter mechanism 200 is in the second state, and the filter screen 210 can abut against the upper wall surface.

[0042] Specifically, the end surface of the upper partition 110 along the first direction close to the lower partition 120 is called the first end surface, and the end surface of the lower partition 120 along the first direction close to the upper partition 110 is called the second end surface. When the movable plate 230 abuts against the second end surface, the filter mechanism 200 is in the first state, and when the movable plate 230 abuts against the first end surface, the filter mechanism 200 is in the second state. Sealing strips are provided on both the first end surface and the second end surface to improve the sealing performance between the first end surface and the movable plate 230 and between the second end surface and the movable plate 230.

[0043] In this embodiment, the positional relationship among the filter screen 210, the movable plate 230, the support frame 220, the upper partition 110 and the lower partition 120 is set as shown in FIG. Figure 4 As shown, in the initial state, the movable plate 230 abuts against the lower partition 120, and the filter screen 210 abuts against the lower wall surface. The lower chamber 250 and the lower partition 120 are connected by the movable plate 230 to form a seal, thereby limiting the liquid from entering the lower chamber 250 through the flow space.

[0044] At this time, after the liquid enters the filter screen 210 where the upper chamber 240 is located and is filtered, the filtered liquid flows out from the inner screen and the outer screen respectively, and then is discharged from the two outlets 102.

[0045] When the filter screen 210 where the upper chamber 240 is located is blocked, the filter screen 210 where the upper chamber 240 is located can be approximately regarded as a sealed state, that is, liquid cannot pass through. When the liquid enters the upper chamber 240 through the flow space, the pressure inside the upper chamber 240 will gradually increase, and the support frame 220 will be forced to move upward through hydraulic pressure, and further force the filter screen 210 to move synchronously. Since the head end of the filter screen 210 is connected to the upper partition 110 and the tail end is connected to the lower partition 120, when the support frame 220 moves along the first direction, the filter screen 210 can move along with the support frame 220 along the first direction and rotate around the support frame 220. That is, the size of the filter screen 210 corresponding to the upper chamber 240 in the first direction becomes larger, and the size of the filter screen 210 corresponding to the lower chamber 250 in the first direction becomes smaller.

[0046] The filter screen 210 rotates around the support frame 220 to drive the movable plate 230 to move in the first direction, so that the movable plate 230 moves between the upper partition 110 and the lower partition 120, and when the filter screen 210 abuts against the upper wall, the movable plate 230 abuts against the upper partition 110, and the entire filter mechanism 200 switches to the second state. Figure 6 As shown, at this time, the movable plate 230 connects the upper chamber 240 and the upper partition plate 110 to form a seal, thereby limiting the liquid from entering the upper chamber 240 through the flow space.

[0047] At this time, after the liquid enters the filter screen 210 where the lower chamber 250 is located and is filtered, part of the filtered liquid flows out from the inner screen and the outer screen where the lower chamber 250 is located respectively, and will be discharged from the outlet 102 arranged adjacent to it in the first direction.

[0048] Another part of the liquid will move upwards and flow to the position of the upper chamber 240, and backwash the outer net where the upper chamber 240 is located, so that the impurities on the outer net fall down. At the same time, after the backwash, the liquid enters the interior of the upper chamber 240, and can also give a positive impact force to the inner net of the upper chamber 240, flushing the impurities on the inner net of the upper chamber 240, and producing a cleaning effect on the filter 210 of the upper chamber 240.

[0049] Similarly, when the filter screen 210 where the lower chamber 250 is located is blocked, the filter screen 210 where the lower chamber 250 is located can be approximately regarded as a sealed state, that is, liquid cannot pass through. When the liquid enters the lower chamber 250 through the flow space, the pressure inside the lower chamber 250 will gradually increase, and the support frame 220 is forced to move downward in the first direction through hydraulic pressure, and further the filter screen 210 is forced to move synchronously. Since the head end of the filter screen 210 is connected to the upper partition 110 and the tail end is connected to the lower partition 120, when the support frame 220 moves in the first direction, the filter screen 210 can move along with the support frame 220 in the first direction and rotate around the support frame 220. That is, the size of the filter screen 210 corresponding to the upper chamber 240 in the first direction becomes smaller, and the size of the filter screen 210 corresponding to the lower chamber 250 in the first direction becomes larger.

[0050] The rotation of the filter 210 around the support frame 220 will drive the movable plate 230 to move in the first direction, so that the movable plate 230 moves between the upper partition 110 and the lower partition 120, and when the filter 210 abuts against the lower wall, the movable plate 230 will abut against the lower partition 120, and the entire filter mechanism 200 switches to the first state and completes the reset.

[0051] Since the filter screen 210 in the upper chamber 240 has been cleaned at this time, the liquid will enter the upper chamber 240 through the flow space and be filtered, and circulate in this way, thereby further improving the working time of the filtering mechanism 200, and the filtering mechanism 200 can automatically judge the blockage degree of the filter screen 210 where the upper chamber 240 is located and the filter screen 210 where the lower chamber 250 is located, and the support frame 220 is moved in the first direction through the hydraulic pressure to realize the alternating operation of the upper chamber 240 and the lower chamber 250, and in the upper chamber When chamber 240 is working, the liquid entering into the upper chamber 240 will backflush or forward impact the filter 210 where the lower chamber 250 is located, and clean the filter 210 where the lower chamber 250 is located. Similarly, when the lower chamber 250 is working, the liquid entering into the lower chamber 250 will backflush or forward impact the filter 210 where the upper chamber 240 is located, and clean the filter 210 where the upper chamber 240 is located, thereby realizing automatic adjustment and switching, extending the use time of the filter 210, and thus improving work efficiency.

[0052] In this embodiment, the movable plate 230 is a hollow structure, so that a cavity 234 is formed inside the movable plate 230, and the movable plate 230 includes a first plate segment 231 and a second plate segment 232, which are sequentially arranged in the second direction, and the first plate segment 231 is located on the side of the second plate segment 232 in the second direction away from the central axis of the filter cartridge 100. The first plate segment 231 and the second plate segment 232 are connected by a connecting rod 238, and the connecting rod 238 is arranged along the second direction and there are multiple connecting rods 238, and the multiple connecting rods 238 are evenly distributed around the first direction between the first plate segment 231 and the second plate segment 232.

[0053] A first notch 235 and a second notch 236 are defined between the first plate section 231 and the second plate section 232. The first notch 235 and the second notch 236 are arranged in sequence in the first direction, and the first notch 235 is located on the side of the second notch 236 close to the inlet 101 in the first direction. The first notch 235 and the second notch 236 are connected in the first direction, thereby defining a sliding space inside the movable plate 230. A sliding plate 260 is arranged in the sliding space, and the sliding plate 260 can slide along the first direction and block the first notch 235 or the second notch 236. When the filter mechanism 200 is in the first state, the sliding plate 260 blocks the first notch 235, and the second notch 236 is connected to the inside of the movable plate 230. When the filter mechanism 200 is in the second state, the sliding plate 260 blocks the second notch 236, and the first notch 235 is connected to the inside of the movable plate 230.

[0054] Specifically, the upper and lower end surfaces of the movable plate 230 are respectively referred to as the upper end surface and the lower end surface, the upper end surface is located on the side of the lower end surface close to the inlet 101 in the first direction, the upper partition 110 is provided with a first magnet, and the upper end surface of the movable plate 230 is provided with a second magnet. The first magnet and the second magnet repel each other, so that the upper partition 110 can cause the movable plate 230 to move along the first direction to the side away from the upper partition 110 until the second gap 236 is blocked. The lower partition 120 is provided with a third magnet, and the lower end surface of the movable plate 230 is provided with a fourth magnet. The third magnet and the fourth magnet repel each other, so that the lower partition 120 can cause the movable plate 230 to move along the first direction to the side away from the lower partition 120 until the first gap 235 is blocked.

[0055] More specifically, the connecting rod 238 is slidably matched with the first plate segment 231. The first plate segment 231 and the second plate segment 232 are both provided with a key slot 237 on the end surface on the side approaching each other in the second direction, the key slot 237 is arranged along the first direction, and the sliding plate 260 is provided with sliding keys 261 on both end surfaces along the second direction, and the key slot 237 is slidably matched with the sliding keys 261 to limit the relative movement of the sliding plate 260 and the movable plate 230 in the first direction.

[0056] Furthermore, a sliding groove is provided on the sliding plate 260 , and the sliding groove is arranged along the first direction, and the connecting rod 238 is slidably matched with the sliding groove.

[0057] Furthermore, a collection chamber 270 is provided on the lower support ring 222 for collecting impurities.

[0058] In this embodiment, the movable plate 230 is divided into a first plate segment 231 and a second plate segment 232 in the second direction, and the sliding plate 260 is arranged in the sliding space defined between the first plate segment 231 and the second plate segment 232. In the initial state, the upper chamber 240 performs filtering work, and the movable plate 230 abuts against the lower partition plate 120. At this time, the movable plate 230 is not required to collect impurities in the filter screen 210 where the upper chamber 240 is located. The sliding plate 260 blocks the first notch 235 by using the repulsive effect of the sliding plate 260 and the lower partition plate 120. At this time, the second notch 236 is connected to the inside of the movable plate 230. See the attached Figure 4 and attached Figure 5 shown.

[0059] When the filter screen 210 in the upper chamber 240 is blocked, the lower chamber 250 is switched to work, and the movable plate 230 moves with the filter screen 210 in the first direction to abut against the upper partition 110, and the sliding plate 260 blocks the second gap 236 by the repulsive effect between the sliding plate 260 and the upper partition 110. At this time, the first gap 235 is connected to the inside of the movable plate 230. Figure 6 and attached Figure 7 Therefore, when the liquid in the lower chamber 250 backwashes or forward impacts the filter screen 210 where the upper chamber 240 is located, impurities on the filter screen 210 will fall off inside the upper chamber 240 and enter the cavity 234 inside the movable plate 230 through the first notch 235 for temporary storage.

[0060] When the filter screen 210 where the lower chamber 250 is located is blocked and the operation is switched to the upper chamber 240, the sliding plate 260 blocks the first gap 235, and the second gap 236 is connected to the inside of the movable plate 230. At this time, the impurities temporarily stored in the cavity 234 will fall through the second gap 236 to the collection chamber 270 set on the lower support ring 222, and the impurities in the upper chamber 240 will be collected.

[0061] When the liquid in the upper chamber 240 performs backwashing or forward impact on the filter screen 210 where the lower chamber 250 is located, the impurities on the filter screen 210 will fall off inside the lower chamber 250 and fall onto the collecting chamber 270 provided on the lower support ring 222, and the impurities in the upper chamber 240 are collected. That is, when the upper chamber 240 and the lower chamber 250 work alternately, the sliding plate 260 can slide in the movable plate 230 to achieve temporary storage of the impurities in the upper chamber 240 in the cavity 234 inside the movable plate 230 and transfer from the cavity 234 to the collecting chamber 270, so that the impurities can be cleaned in time.

[0062] In combination with the above embodiments, the specific working principle and working process are as follows:

[0063] When in use, first close the two outlets 102, and pour the filtered liquid from the inlet 101 to fill the entire filter cartridge 100, then open the outlet 102, and keep the inlet 101 filled with liquid (unfiltered). In the initial state, the filter mechanism 200 is in the first state, the movable plate 230 abuts against the lower partition 120, the filter screen 210 abuts against the lower wall surface, and the lower chamber 250 is connected to the lower partition 120 through the movable plate 230 to form a seal, thereby limiting the liquid from entering the lower chamber 250 through the flow space. At this time, after the liquid enters the filter screen 210 where the upper chamber 240 is located for filtration, the filtered liquid flows out from the inner and outer nets respectively, and then is discharged from the two outlets 102.

[0064] When the filter screen 210 where the upper chamber 240 is located is blocked, the filter screen 210 where the upper chamber 240 is located can be approximately regarded as a sealed state. When the liquid enters the upper chamber 240 through the flow space, the pressure inside the upper chamber 240 will gradually increase, and the support frame 220 will be forced to move upward through hydraulic pressure, and further the filter screen 210 will be forced to move synchronously, and the filter screen 210 can move along the first direction with the support frame 220 while rotating around the support frame 220.

[0065] The filter screen 210 rotates around the support frame 220 to drive the movable plate 230 to move in the first direction, so that the movable plate 230 moves between the upper partition 110 and the lower partition 120, and when the filter screen 210 abuts against the upper wall, the movable plate 230 abuts against the upper partition 110, and the entire filter mechanism 200 switches to the second state. Figure 6 As shown, at this time, the movable plate 230 connects the upper chamber 240 and the upper partition plate 110 to form a seal, thereby limiting the liquid from entering the upper chamber 240 through the flow space.

[0066] At this time, after the liquid enters the filter screen 210 where the lower chamber 250 is located and is filtered, part of the filtered liquid flows out from the inner screen and the outer screen where the lower chamber 250 is located respectively, and will be discharged from the outlet 102 arranged adjacent to it in the first direction.

[0067] Another part of the liquid will move upward and flow to the position of the upper chamber 240, and backflushing the outer net where the upper chamber 240 is located, so that the impurities on the outer net fall down. At the same time, after the backflushing, the liquid enters the upper chamber 240, and can also give the inner net of the upper chamber 240 a positive impact force, flushing the impurities on the inner net of the upper chamber 240, and producing a cleaning effect on the filter 210 of the upper chamber 240.

[0068] Similarly, when the filter screen 210 where the lower chamber 250 is located is blocked, the filter screen 210 where the lower chamber 250 is located can be approximately regarded as a sealed state. When the liquid enters the lower chamber 250 through the flow space, the pressure inside the lower chamber 250 will gradually increase, and the support frame 220 will be forced to move downward in the first direction through hydraulic pressure, and the filter screen 210 will be further forced to move synchronously, and the filter screen 210 can move along with the support frame 220 in the first direction while rotating around the support frame 220.

[0069] The rotation of the filter 210 around the support frame 220 will drive the movable plate 230 to move in the first direction, so that the movable plate 230 moves between the upper partition 110 and the lower partition 120, and when the filter 210 abuts against the lower wall, the movable plate 230 will abut against the lower partition 120, and the entire filter mechanism 200 switches to the first state and completes the reset.

[0070] Since the filter screen 210 in the upper chamber 240 has been cleaned at this time, the liquid will enter the upper chamber 240 through the flow space and be filtered, and circulate in this way, thereby further improving the working time of the filtering mechanism 200, and the filtering mechanism 200 can automatically judge the blockage degree of the filter screen 210 where the upper chamber 240 is located and the filter screen 210 where the lower chamber 250 is located, and the support frame 220 is moved in the first direction through hydraulic pressure to realize the alternating operation of the upper chamber 240 and the lower chamber 250, and when the upper chamber 240 is working, the upper chamber 2 The liquid entering into 40 will back-flush or forward-impact the filter screen 210 where the lower chamber 250 is located, and clean the filter screen 210 where the lower chamber 250 is located. Similarly, when the lower chamber 250 is working, the liquid entering into the lower chamber 250 will back-flush or forward-impact the filter screen 210 where the upper chamber 240 is located, and clean the filter screen 210 where the upper chamber 240 is located, thereby realizing automatic adjustment and switching, and thereby enabling the upper chamber 240 and the lower chamber 250 to work alternately, thereby extending the use time of the filter screen 210 and thereby improving work efficiency.

[0071] When the filter screen 210 where the lower chamber 250 is located is blocked and the operation is switched to the upper chamber 240, the sliding plate 260 blocks the first gap 235, and the second gap 236 is connected to the inside of the movable plate 230. At this time, the impurities temporarily stored in the cavity 234 will fall through the second gap 236 to the collection chamber 270 set on the lower support ring 222, and the impurities in the upper chamber 240 will be collected.

[0072] When the liquid in the upper chamber 240 performs backwashing or forward impact on the filter screen 210 where the lower chamber 250 is located, the impurities on the filter screen 210 will fall off inside the lower chamber 250 and fall onto the collecting chamber 270 provided on the lower support ring 222, and the impurities in the upper chamber 240 are collected. That is, when the upper chamber 240 and the lower chamber 250 work alternately, the sliding plate 260 can slide in the movable plate 230 to achieve temporary storage of the impurities in the upper chamber 240 in the cavity 234 inside the movable plate 230 and transfer from the cavity 234 to the collecting chamber 270, so that the impurities can be cleaned in time.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device for a CNC machine tool, characterized in that: The invention comprises a filter cartridge and a filtering mechanism, wherein the filter cartridge is arranged along a first direction, and the first direction is a vertical direction; an inlet is provided at the upper end of the filter cartridge, and outlets are provided at the upper and lower ends of the filter cartridge, and an upper partition and a lower partition are fixedly arranged in sequence along the first direction in the filter cartridge; a flow space is defined between the upper partition and the lower partition, and the flow space is connected to the inlet; the filtering mechanism comprises a filter screen, a support frame and a movable plate, the support frame is installed in the filter cartridge, the upper and lower ends of the filter screen are respectively referred to as a head end and a tail end, the head end is connected to the upper partition, the tail end is sequentially wound around the upper and lower ends of the support frame along the first direction and then connected to the lower partition, the filter screens located on both sides of the support frame along the second direction are respectively referred to as an inner screen and an outer screen, the inner screen is located on the side of the outer screen close to the central axis of the support frame in the second direction, the second direction is perpendicular to the first direction, a filtering chamber is defined between the inner screen and the outer screen, the movable plate is installed in the filtering chamber, and the filtering chamber is divided into an upper chamber and a lower chamber sequentially arranged along the first direction, the upper chamber is located on the side of the lower chamber close to the inlet in the first direction, and the movable plate can be slidably arranged along the first direction; The filter mechanism has a first state and a second state. When in the first state, the movable plate restricts the liquid from entering the lower chamber through the flow space, and the liquid can enter the upper chamber through the flow space. When in the second state, the movable plate restricts the liquid from entering the upper chamber through the flow space, and the liquid can enter the lower chamber through the flow space. In the initial state, the filter mechanism is in the first state, and the movable plate slides along the first direction to switch the filter mechanism from the first state to the second state; the support frame can move along the first direction in the filter chamber, the movable plate is fixed to the filter screen and slides with the support frame, and then when the support frame moves along the first direction in the filter chamber, the filter screen can move along the first direction with the support frame and rotate around the support frame. The inner wall surfaces at the upper and lower ends of the filter cartridge are respectively called the upper wall surface and the lower wall surface, and the upper wall surface is located on the side of the lower wall surface close to the inlet in the first direction, and the filter screen can respectively abut against the upper wall surface and the lower wall surface when it moves along the first direction, and form a seal with the upper wall surface and the lower wall surface; The movable plate slides along the first direction and can abut against the upper partition or the lower partition respectively, and when the movable plate abuts against the lower partition, the filter mechanism is in the first state, at which time the filter can abut against the lower wall surface; when the movable plate abuts against the upper partition, the filter mechanism is in the second state, at which time the filter can abut against the upper wall surface; The movable plate is a hollow structure, and the movable plate includes a first plate segment and a second plate segment, the first plate segment and the second plate segment are arranged in sequence in the second direction, and the first plate segment is located on a side of the second plate segment away from the central axis of the filter cartridge in the second direction; the first plate segment and the second plate segment are connected by a connecting rod, and the connecting rod is arranged along the second direction and there are multiple connecting rods, and the multiple connecting rods are evenly distributed around the first direction between the first plate segment and the second plate segment, and a first notch and a second notch are defined between the first plate segment and the second plate segment, the first notch and the second notch are arranged in sequence in the first direction, and the first notch is located on a side of the second notch close to the inlet in the first direction, and the first notch and the second notch are connected in the first direction, thereby defining a sliding space inside the movable plate; a sliding plate is arranged in the sliding space, and the sliding plate can slide in the first direction and block the first notch or the second notch; and when the filtering mechanism is in the first state, the sliding plate blocks the first notch, and the second notch is connected to the inside of the movable plate, and when the filtering mechanism is in the second state, the sliding plate blocks the second notch, and the first notch is connected to the inside of the movable plate; The upper and lower end faces of the movable plate are respectively called the upper end face and the lower end face, and the upper end face is located on the side of the lower end face close to the inlet in the first direction; a first magnet is arranged on the upper partition plate, and a second magnet is arranged on the upper end face of the movable plate. The first magnet and the second magnet repel each other, so that the upper partition plate can cause the movable plate to move along the first direction to the side away from the upper partition plate until the second gap is blocked; a third magnet is arranged on the lower partition plate, and a fourth magnet is arranged on the lower end face of the movable plate. The third magnet and the fourth magnet repel each other, so that the lower partition plate can cause the movable plate to move along the first direction to the side away from the lower partition plate until the first gap is blocked.

2. A filtering device for a CNC machine tool according to claim 1, characterized in that: The support frame includes an upper support ring, a lower support ring and multiple support columns. The upper support ring is located on the side of the lower support ring close to the inlet in the first direction. The upper support ring and the lower support ring are connected by multiple support columns, and the support columns are arranged along the first direction; bosses are arranged on the upper wall surface and the lower wall surface, and annular grooves are opened on the bosses. The upper support ring and the lower support ring have the same shape, and the upper support ring and the lower support ring can abut against the corresponding annular grooves and seal with each other; the movable plate is slidably installed on the support column.

3. A filtering device for a CNC machine tool according to claim 1, characterized in that: A sliding groove is provided on the sliding plate, the sliding groove is arranged along a first direction, and the connecting rod is slidably matched with the sliding groove.

4. A filtering device for a CNC machine tool according to claim 2, characterized in that: A collecting chamber is arranged on the lower supporting ring.

5. The filtering device for a CNC machine tool according to claim 2, characterized in that: Each support column is provided with a clamping protrusion, and the movable plate is provided with a clamping slot, and the clamping protrusion can be clamped with the clamping slot.

6. The filtering device for a CNC machine tool according to claim 1, characterized in that: An extension tube is fixedly connected at the inlet, the extension tube is arranged along the first direction, the upper partition is fixedly connected to the extension tube, and the lower partition is fixedly connected to the upper partition through a connecting column, and the connecting column is arranged along the first direction and there are multiple of them.

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