Chip removal tank, chip removal machine and machine tool

Abstract

This utility model provides a return fluid tank for a chip conveyor, the chip conveyor itself, and a machine tool. The return fluid tank includes a housing with a receiving cavity, and further includes a first partition, a second partition, a first filter, and a second filter. The housing divides the receiving cavity into a receiving chamber, a return chamber, and a storage chamber through the first and second partitions. The receiving chamber is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber communicates with the storage chamber, and the other side of the receiving chamber communicates with the storage chamber through the return chamber. The first filter is disposed in the receiving chamber and is used to filter the mixture of chips and cutting fluid entering the receiving chamber. The return fluid tank of the chip conveyor provided by this utility model can improve the filtration effect of the return fluid tank.

Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, and in particular to a return tank for a chip conveyor, a chip conveyor, and a machine tool. Background Technology

[0002] The chip conveyor works in conjunction with a filter water tank to recycle various coolants collected by the chip conveyor. The chip conveyor is mainly used to collect and filter mixtures of various metal and non-metal waste chips and cutting fluid generated during machine tool processing, and to transfer the waste chips to a collection cart. The separated cutting fluid flows to a return tank for reuse by the machine tool.

[0003] Coolant types include coolant, lubricant, or cutting fluid. Coolant is sprayed onto the tool and workpiece through a circulation system to remove cutting heat, ensuring temperature control, lubrication, and chip removal during machining, preventing tool overheating (temperature reduction of 30%-50%), avoiding workpiece thermal deformation, and improving machining accuracy.

[0004] However, traditional return tanks have a single filtration method and a small filter element area, resulting in a small overall filtration area. This not only leads to slow filtration efficiency but also makes the filter element prone to clogging after prolonged filtration, resulting in poor filtration performance of the return tank (e.g., utility model patent with patent publication number CN 208418132 U).

[0005] Therefore, improving the filtration efficiency of the return tank is an urgent problem to be solved. Utility Model Content

[0006] This utility model provides a return liquid tank for a chip conveyor, a chip conveyor, and a machine tool, thereby improving the filtration effect of the return liquid tank.

[0007] This utility model provides a return fluid tank for a chip conveyor, including a housing with a receiving cavity, and further including a first partition, a second partition, a first filter, and a second filter. The housing divides the receiving cavity into a receiving chamber, a return chamber, and a storage chamber through the first partition and the second partition. The receiving chamber is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber is connected to the storage chamber, and the other side of the receiving chamber is connected to the storage chamber through the return chamber.

[0008] The first filter body is disposed in the receiving chamber, and the first filter body is used to filter the mixture of chips and cutting fluid entering the receiving chamber;

[0009] The second filter is disposed between the receiving chamber and the liquid storage chamber, and between the reflux chamber and the liquid storage chamber.

[0010] In some feasible implementations, the two ends of the first partition are connected to the inner wall of the box along the length direction of the box, and the two ends of the second partition are connected to the first partition and the inner wall of the box along the width direction of the box. The first partition and the second partition are T-shaped vertically. The receiving chamber and the liquid storage chamber are located on the same side of the reflux chamber along the length direction.

[0011] In some feasible embodiments, the receiving cavity further includes a first buffer cavity disposed on the side of the receiving cavity opposite to the storage cavity and a second buffer cavity disposed between the receiving cavity and the storage cavity. The receiving cavity is connected to the reflux cavity through the first buffer cavity. The receiving cavity is connected to the storage cavity through the second buffer cavity. The first buffer cavity and the storage cavity, along with the reflux cavity, are located on opposite sides of the width direction of the receiving cavity, and the first buffer cavity and the storage cavity are located on opposite sides of the length direction of the receiving cavity. The receiving cavity further includes a third buffer cavity disposed between the storage cavity and the reflux cavity. The storage cavity is connected to the reflux cavity through the third buffer cavity.

[0012] In some feasible embodiments, the first filter body includes a base support and an inclined support connected to the base support along the width direction of the housing. Filter plates are detachably mounted on both the base support and the inclined support.

[0013] The top of the outer peripheral wall of the enclosure is provided with a receiving pipe, and the receiving pipe is provided with a receiving channel for receiving transmission lines and transmission pipes.

[0014] In some feasible implementations, the base support includes a first frame and two first support plates disposed inside the first frame and connected to each other; the tilting support includes a second frame and a second support plate disposed inside the second frame, or...

[0015] The first filter body includes two filter side plates connected to the two sides of the bottom support and the inclined support. The first filter body has a receiving interface on the side near the reflux chamber. The top of the two filter side plates is provided with a support edge that supports the two side walls of the receiving chamber.

[0016] In some feasible embodiments, the liquid storage chamber is provided with an enclosure frame for installing the second filter body, the second filter body including a fixed filter screen and a removable filter screen, the enclosure frame including a front frame side near the reflux chamber, and the fixed filter screen and the removable filter screen are disposed on the front frame side.

[0017] In some feasible embodiments, the enclosure frame further includes a rear bending frame disposed on the rear side of the liquid storage chamber away from the return chamber, and a side frame facing the receiving chamber. The front and rear sides of the side frame are connected to the front frame and the rear bending frame, respectively. The rear bending frame protrudes from the rear side wall of the liquid storage chamber toward the liquid storage chamber. The bottom of the side frame near the rear side wall of the liquid storage chamber is provided with a hollowed-out communication port. The rear bending frame is connected to the bottom wall of the liquid storage chamber, the rear side wall of the liquid storage chamber, and the periphery of the communication port on the side frame. The rear bending frame, the rear side wall of the liquid storage chamber, and the bottom wall of the liquid storage chamber enclose and form a liquid inlet channel communicating with the communication port and the receiving chamber.

[0018] The second filter body also includes a bent filter screen that cooperates with the rear bending frame.

[0019] In some feasible implementations, the rear bending frame includes two bending supports spaced apart, and two support frame sides connected to the first and last ends of the two bending supports, respectively. The two support frame sides are respectively connected to the bottom wall of the liquid storage chamber and the rear side wall of the liquid storage chamber.

[0020] The bent filter screen includes a horizontal filter screen and a vertical filter screen, which are connected to two bent supports and two support frame edges respectively by fasteners.

[0021] This utility model also provides a chip conveyor, including a chip lifting machine and a return tank of the chip conveyor, wherein one end of the chip lifting machine is disposed in the return chamber.

[0022] This utility model also provides a machine tool, including a base, the base having a chip discharge port for discharging a mixture of chips and cutting fluid.

[0023] It also includes the return tank of the aforementioned chip conveyor, wherein the chip discharge direction of the chip discharge port faces the receiving chamber, or

[0024] It also includes the aforementioned chip conveyor, wherein the chip discharge port faces the chip lifting machine.

[0025] The return fluid tank of the aforementioned chip conveyor, by providing a housing with a receiving cavity, further includes a first partition, a second partition, a first filter, and a second filter. The housing is divided into a receiving chamber, a return chamber, and a storage chamber by the first and second partitions. The receiving chamber is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber is connected to the storage chamber, and the other side of the receiving chamber is connected to the storage chamber through the return chamber. The first filter is disposed in the receiving chamber and is used to filter the mixture of chips and cutting fluid entering the receiving chamber. The second filter is installed in the storage chamber and is disposed between the receiving chamber and the storage chamber, and between the return chamber and the storage chamber, thereby enabling filtration through two filtration structures, improving the filtration effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the return tank of a chip conveyor provided in an embodiment of the present invention.

[0028] Figure 2 An exploded view of the return tank of a chip conveyor provided in an embodiment of this utility model.

[0029] Figure 3 This is a schematic diagram of the bottom of the first filter element in the return tank of a chip conveyor provided in an embodiment of the present invention.

[0030] Component Symbol Explanation

[0031] 110. Housing; S. Receiving cavity; S1. Receiving chamber; S2. Return chamber; S3. Liquid storage chamber; S4. First buffer chamber; S5. Second buffer chamber; S6. Third buffer chamber; 120. First filter body; 121. Base support; 1211. First frame; 1212. First support plate; 122. Inclined support; 1221. Second frame; 1222. Second support plate; 123. Filter plate; 124. Filter side plate; 125. Receiving interface; 130. Second filter body; 13 1. Fixed filter screen; 132. Demountable filter screen; 133. Bending filter screen; 1331. Horizontal filter screen; 1332. Vertical filter screen; 140. Enclosing frame; 141. Front frame edge; 1411. Slot; 142. Rear bending frame; 1421. Bending support body; 1422. Support frame edge; 143. Side frame edge; 1431. Connecting port; 150. Receiving pipe; I. Liquid inlet channel; F1. First separator; F2. Second separator; Q. Liquid inlet direction; G. Flow direction.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] To provide a clearer and more accurate understanding of the present invention, a detailed description will now be provided in conjunction with the accompanying drawings. The accompanying drawings illustrate examples of embodiments of the present invention, wherein the same reference numerals denote the same elements. It is to be understood that the scale shown in the accompanying drawings is not the actual scale of the present invention, but is for illustrative purposes only and is not a drawing based on the original dimensions.

[0037] The existing water tank only has an internal filter, and the filtration structure is only one layer. When filtering for a long time, if the debris is not cleaned in time, it will become clogged and affect the return water of the tank.

[0038] For the above technical issues, please refer to Figure 1 and 2 The present invention provides a return liquid tank for a chip conveyor, including a box body 110 with a receiving cavity S, and also including a first partition F1, a second partition F2, a first filter body 120 and a second filter body 130.

[0039] The housing 110 is rectangular in shape. The housing 110 divides the receiving cavity S into a receiving chamber S1, a reflux chamber S2, and a liquid storage chamber S3 via the first partition F1 and the second partition F2. The first partition F1 and the second partition F2 are plate-shaped. The receiving chamber S1 is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber S1 is connected to the liquid storage chamber S3, and the other side of the receiving chamber S1 is connected to the liquid storage chamber S3 via the reflux chamber S2. The first filter 120 is disposed in the receiving chamber S1 and is used to filter the mixture of chips and cutting fluid entering the receiving chamber S1. This application adds a new filter (i.e., the first filter 120), so that during filtration, the material is first filtered through the first filter 120 and then through the second filter 130, resulting in better filtration efficiency. Furthermore, the first filter 120 is located in the receiving chamber. When the operator needs to empty the chips, he / she only needs to remove the first filter 120 from the receiving chamber. The operation is simple, takes little time, and the machine tool does not need to be stopped.

[0040] The receiving cavity S further includes a first buffer cavity S4 disposed on the side of the receiving cavity S1 away from the liquid storage cavity S3, and a second buffer cavity S5 disposed between the receiving cavity S1 and the liquid storage cavity S3. The receiving cavity S1 is connected to the reflux cavity S2 through the first buffer cavity S4; the receiving cavity S1 is connected to the liquid storage cavity S3 through the second buffer cavity S5. For example, the bottom of the receiving cavity S1 is connected to the bottom of the liquid storage cavity S3 through the second buffer cavity S5. The first buffer cavity S4 and the liquid storage cavity S3, along with the reflux cavity S2, are located on both sides of the width direction of the receiving cavity S, and the first buffer cavity S4 and the liquid storage cavity S3 are located on both sides of the length direction of the receiving cavity S. It can be understood that the length direction is the direction between the receiving cavity and the liquid storage cavity, and the width direction is the direction between the reflux cavity and the liquid storage cavity. The width direction is also the direction between the receiving cavity and the reflux cavity. Figure 1 The receiving cavity S also includes a third buffer cavity S6 disposed between the liquid storage cavity S3 and the return cavity S2, wherein the liquid storage cavity S3 is connected to the return cavity S2 through the third buffer cavity S6. By providing three buffer cavities, the cutting fluid can be stored in the buffer cavities when the machine tool has a large chip discharge volume, thus preventing the cutting fluid from overflowing outside the housing 110.

[0041] Please refer to Figure 1 and 2 The two ends of the first separator F1 are connected to the inner wall of the box 110 along the length direction of the box 110, and the two ends of the second separator F2 are connected to the first separator F1 and the inner wall of the box 110 along the width direction of the box 110. The first separator F1 and the second separator F2 are T-shaped vertically. The receiving chamber S1 and the liquid storage chamber S3 are located on the same side of the return chamber S2 along the length direction.

[0042] The top of the outer peripheral wall of the housing 110 is provided with a receiving pipe 150, and the receiving pipe 150 is provided with a receiving channel for receiving transmission lines and transmission pipes. It can accommodate and protect the wires of the water pump that draws liquid from the liquid storage chamber S3.

[0043] The structure of the first filter body 120 is described in detail below. The first filter body 120 includes a base support 121 and an inclined support 122 connected to the base support 121 along the width direction of the housing 110. Filter plates 123 are detachably installed on both the base support 121 and the inclined support 122. The inclined surface on the inclined support 122 forms a buffer surface. When cutting fluid flows in, the flow rate of the cutting fluid is reduced by the slope design, which prevents the liquid from escaping outside the water tank due to excessive flow rate of the cutting fluid.

[0044] Please refer to Figure 2 and 3The structure of the bottom support 121 and the inclined support 122 in the first filter element is described in detail below. The bottom support 121 includes a first frame 1211 and two first support plates 1212 disposed inside the first frame 1211 and connected to each other. The inclined support 122 includes a second frame 1221 and a second support plate 1222 disposed inside the second frame 1221. Alternatively, the first filter body 120 includes two filter side plates 124 connected to the two sides of the bottom support 121 and the inclined support 122. The first filter body 120 has a receiving interface 125 on the side near the return chamber S2. The top of the two filter side plates 124 is provided with supporting edges that support the two side walls of the receiving chamber S1. Furthermore, the structure of the bottom support 121 and the inclined support 122 is simple, saving the number of structural components.

[0045] Traditional filter screens are non-removable, making replacement difficult. To solve this technical problem, please refer to... Figure 1 and 2 The liquid storage chamber S3 is provided with an enclosure frame 140 for installing the second filter body 130. The second filter body 130 includes a fixed filter screen 131 and a detachable filter screen 132. The enclosure frame 140 includes a front frame side 141 near the reflux chamber S2, and the fixed filter screen 131 and the detachable filter screen 132 are disposed on the front frame side 141. The addition of the detachable filter screen 132 facilitates its installation and removal.

[0046] The structure of the second filter element 130 is described in detail below. Please refer to [link / reference]. Figure 1 and 2 The second filter body 130 has three filter surfaces along the vertical direction. The second filter body 130 is disposed between the receiving chamber S1 and the liquid storage chamber S3 and between the return chamber S2 and the liquid storage chamber S3, thereby being able to filter the cutting fluid between the receiving chamber S1 and the liquid storage chamber S3 and filter the cutting fluid between the return chamber S2 and the liquid storage chamber S3.

[0047] The following describes in detail how a portion of the structure of the second filter body 130 is detachably connected to the enclosing frame 140. The front frame edge 141 is provided with a slot 1411 in the vertical direction. The detachable filter screen 132 is plate-shaped and is detached from the slot 1411. When the detachable filter screen 132 is inserted into the slot 1411, the bottom of the detachable filter screen 132 abuts against the bottom wall of the liquid storage chamber S3, thereby ensuring a stable connection between the bottom of the detachable filter screen 132 and the liquid storage chamber S3.

[0048] To improve the filtration effect of the second filter element 130, please refer to... Figure 1 and 2The enclosing frame 140 further includes a rear bending frame 142 disposed on the rear side of the liquid storage chamber S3 away from the return chamber S2, and a side frame edge 143 facing the receiving chamber S1. The front and rear sides of the side frame edge 143 are respectively connected to the front frame edge 141 and the rear bending frame 142. The rear bending frame 142 protrudes from the rear side wall of the liquid storage chamber S3 into the liquid storage chamber S3. The bottom of the side frame edge 143 near the rear side wall of the liquid storage chamber S3 is provided with a hollowed-out communication opening 1431. The rear bending frame 142 is connected to the bottom wall of the liquid storage chamber S3, the rear side wall of the liquid storage chamber S3, and the periphery of the communication port 1431 on the side frame 143. The rear bending frame 142, the rear side wall of the liquid storage chamber S3, and the bottom wall of the liquid storage chamber S3 enclose and form a liquid inlet channel I that communicates with the communication port 1431 and the receiving chamber S1. By setting the rear bending frame 142, the filtration area of ​​the second filter body 130 can be increased without reducing the storage capacity of the liquid storage chamber S3.

[0049] For details, please refer to Figure 1 and 2 The second filter body 130 also includes a bent filter screen 133 that cooperates with the rear bending frame 142. Traditional liquid storage chambers are vertically right-angled, enclosing the corner of the water tank to form the liquid storage chamber. Only two of the four sides of the liquid storage chamber can be used for filtration, resulting in poor filtration efficiency. To address this technical problem, this application adds a rear bending frame 142 and a bent filter screen 133 to the back of the tank interior, creating a single-sided filtration structure at the rear of the liquid storage chamber S3. The enclosing frame, a portion of the side wall of the water tank, and a portion of the rear side wall enclose the liquid storage chamber S3, providing an additional surface for filtration, increasing the filtration area, and improving the filtration effect.

[0050] The specific structure of the rear bending frame 142 is described in detail below. The rear bending frame 142 includes two bending support bodies 1421 spaced apart and two support frame edges 1422 connected to the first and last ends of the two bending support bodies 1421, respectively. The two support frame edges 1422 are respectively connected to the bottom wall of the liquid storage chamber S3 and the rear side wall of the liquid storage chamber S3, thereby providing stable support for the bending filter screen 133. Furthermore, it is only connected to the periphery of the bending filter screen 133, thereby maximizing the filtration area of ​​the bending filter screen 133 and improving its filtration effect.

[0051] The specific structure of the bent filter screen 133 is described in detail below. Please refer to [link / reference]. Figure 1 and 2The bent filter screen 133 includes a horizontal filter screen 1331 and a vertical filter screen 1332, which are respectively connected to two bending supports 1421 and two support frame edges 1422 by fasteners. The structural design of the rear bending frame 142 and the bent filter screen 133 is simple, which increases the filtration area of ​​the bent filter screen 133.

[0052] The return fluid tank of the aforementioned chip conveyor, through a housing 110 with a receiving cavity S, further includes a first partition F1, a second partition F2, a first filter 120, and a second filter 130. The housing 110 divides the receiving cavity S into a receiving chamber S1, a return chamber S2, and a storage chamber S3 by the first partition F1 and the second partition F2. The receiving chamber S1 is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber S1 is connected to one side of the storage chamber S3, and the other side of the receiving chamber S1 is connected to the return chamber. The other side of chamber S2 is connected to the liquid storage chamber S3; the first filter body 120 is disposed in the receiving chamber S1, and the first filter body 120 is used to filter the mixture of chips and cutting fluid entering the receiving chamber S1; the second filter body 130 is installed in the liquid storage chamber S3, and the second filter body 130 is disposed between the receiving chamber S1 and the liquid storage chamber S3 and between the return chamber S2 and the liquid storage chamber S3, so that filtration can be carried out through the two filtration structures of the first filter body 120 and the second filter body 130, thereby improving the filtration effect.

[0053] The second aspect of this utility model provides a chip conveyor, including a chip lifting mechanism and a return fluid tank for the chip conveyor. One end of the chip lifting mechanism is disposed in a return chamber S2. The chip conveyor includes a chip lifting mechanism and a return fluid tank. The chip lifting mechanism is used to filter out the chips and transport the chips to a high position before discharging them into a chip receiving carriage. The lower position of the chip lifting mechanism is installed in the return chamber S2, and the discharge port is connected to the receiving chamber S1. The chip lifting mechanism first receives the mixture of chips and cutting fluid flowing out of the chip discharge port of the machine tool base. The chip conveying chain of the chip lifting mechanism transports the chips to the outside. The cutting fluid and a small amount of chips flowing from the chip lifting mechanism to the return chamber S2 first pass through the receiving chamber S1 and are filtered by a first filter element.

[0054] A third aspect of this utility model provides a machine tool, including a base, the base having a chip discharge port for discharging a mixture of chips and cutting fluid.

[0055] It also includes the return tank of the aforementioned chip conveyor, wherein the chip discharge direction of the chip discharge port faces the receiving chamber S1, or

[0056] It also includes the aforementioned chip conveyor, wherein the chip discharge port faces the chip lifting machine.

[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0058] The above-listed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A return tank for a chip conveyor, comprising a housing (110) having a receiving cavity (S), characterized in that, It also includes a first partition (F1), a second partition (F2), a first filter (120), and a second filter (130). The housing (110) divides the receiving cavity (S) into a receiving chamber (S1), a return chamber (S2), and a liquid storage chamber (S3) through the first partition (F1) and the second partition (F2). The receiving chamber (S1) is used to receive a mixture of chips and cutting fluid. One side of the receiving chamber (S1) is connected to the liquid storage chamber (S3), and the other side of the receiving chamber (S1) is connected to the liquid storage chamber (S3) through the return chamber (S2). The first filter (120) is disposed in the receiving chamber (S1) and is used to filter the mixture of chips and cutting fluid entering the receiving chamber (S1); The second filter (130) is disposed between the receiving chamber (S1) and the liquid storage chamber (S3) and between the reflux chamber (S2) and the liquid storage chamber (S3).

2. The return tank of the chip conveyor as described in claim 1, characterized in that, The two ends of the first separator (F1) are connected to the inner wall of the box (110) along the length direction of the box (110), and the two ends of the second separator (F2) are connected to the first separator (F1) and the inner wall of the box (110) along the width direction of the box (110). The first separator (F1) and the second separator (F2) are T-shaped in the vertical direction. The receiving chamber (S1) and the liquid storage chamber (S3) are located on the same side of the reflux chamber (S2) along the length direction.

3. The return tank of the chip conveyor as described in claim 2, characterized in that, The receiving cavity (S) further includes a first buffer cavity (S4) disposed on the side of the receiving cavity (S1) away from the liquid storage cavity (S3) and a second buffer cavity (S5) disposed between the receiving cavity (S1) and the liquid storage cavity (S3). The receiving cavity (S1) is connected to the reflux cavity (S2) through the first buffer cavity (S4); the receiving cavity (S1) is connected to the liquid storage cavity (S3) through the second buffer cavity (S5). The first buffer cavity (S4) and the liquid storage cavity (S3) are connected to the receiving cavity (S2) through the second buffer cavity (S5). The liquid chamber (S3) and the return chamber (S2) are located on opposite sides of the width of the receiving cavity (S), and the first buffer chamber (S4) and the liquid storage chamber (S3) are located on opposite sides of the length of the receiving cavity (S). The receiving cavity (S) also includes a third buffer chamber (S6) disposed between the liquid storage chamber (S3) and the return chamber (S2), and the liquid storage chamber (S3) is connected to the return chamber (S2) through the third buffer chamber (S6).

4. The return tank of the chip conveyor as described in claim 1, characterized in that, The first filter body (120) includes a base support (121) and an inclined support (122) connected to the base support (121) along the width direction of the housing (110). Filter plates (123) can be detachably mounted on both the base support (121) and the inclined support (122). The top of the outer peripheral wall of the box (110) is provided with a receiving pipe (150), and the receiving pipe (150) is provided with a receiving channel for receiving transmission lines and transmission pipes.

5. The return tank of the chip conveyor as described in claim 4, characterized in that, The base support (121) includes a first frame (1211) and two first support plates (1212) disposed inside the first frame (1211) and connected to each other. The inclined support (122) includes a second frame (1221) and a second support plate (1222) disposed inside the second frame (1221). The first filter body (120) includes two filter side plates (124) connected to the two sides of the bottom support (121) and the inclined support (122). The first filter body (120) has a receiving interface (125) on the side near the return chamber (S2). The top of the two filter side plates (124) is provided with a support edge that supports the two side walls of the receiving chamber (S1).

6. The return tank of the chip conveyor as described in claim 1, characterized in that, The liquid storage chamber (S3) is provided with an enclosure frame (140) for installing the second filter body (130). The second filter body (130) includes a fixed filter screen (131) and a detachable filter screen (132). The enclosure frame (140) includes a front frame side (141) near the reflux chamber (S2). The fixed filter screen (131) and the detachable filter screen (132) are located on the front frame side (141).

7. The return tank of the chip conveyor as described in claim 6, characterized in that, The enclosure frame (140) further includes a rear bending frame (142) disposed on the rear side of the liquid storage chamber (S3) away from the return chamber (S2), and a side frame edge (143) facing the receiving chamber (S1). The front and rear sides of the side frame edge (143) are respectively connected to the front frame edge (141) and the rear bending frame (142). The rear bending frame (142) protrudes from the rear side wall of the liquid storage chamber (S3) into the liquid storage chamber (S3), and the side frame edge (143) is close to the liquid storage chamber. The bottom of the rear side wall of the chamber (S3) is provided with a hollowed-out communication port (1431). The rear bending frame (142) is connected to the bottom wall of the liquid storage chamber (S3), the rear side wall of the liquid storage chamber (S3), and the periphery of the communication port (1431) on the side frame edge (143). The rear bending frame (142), the rear side wall of the liquid storage chamber (S3), and the bottom wall of the liquid storage chamber (S3) enclose and form a liquid inlet channel (I) that communicates with the communication port (1431) and the receiving chamber (S1). The second filter body (130) also includes a bent filter screen (133) that cooperates with the rear bending frame (142).

8. The return tank of the chip conveyor as described in claim 7, characterized in that, The rear bending frame (142) includes two bending support bodies (1421) spaced apart, and two support frame sides (1422) connected to the first and last ends of the two bending support bodies (1421) respectively. The two support frame sides (1422) are respectively connected to the bottom wall of the liquid storage chamber (S3) and the rear side wall of the liquid storage chamber (S3). The bent filter screen (133) includes a horizontal filter screen (1331) and a vertical filter screen (1332), which are connected to two bent supports (1421) and two support frame edges (1422) respectively by fasteners.

9. A chip conveyor, comprising a chip lifting mechanism, characterized in that, It also includes a return tank for the chip conveyor as described in any one of claims 1-8, wherein one end of the chip conveyor is disposed in the return chamber (S2).

10. A machine tool, comprising a base having a chip discharge port for discharging a mixture of chips and cutting fluid, characterized in that, It also includes a return tank for the chip conveyor as described in any one of claims 1-8, wherein the chip discharge direction of the chip discharge port faces the receiving chamber (S1), or It also includes the chip conveyor as described in claim 9, wherein the chip discharge direction of the chip discharge port is toward the chip lifting machine.

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