Precipitation device for cyclic regeneration of waste etching liquid

Abstract

The invention is applicable to the technical field of wastewater treatment equipment, and provides a sedimentation device for cyclic regeneration of waste etching liquid, which comprises a sedimentation tank, a support seat, a bearing mechanism and a waste liquid stirring mechanism, the support seat is fixed on the top of the sedimentation tank, the bearing mechanism is arranged on the support seat, and the waste liquid stirring mechanism is arranged on the bearing mechanism. The bearing mechanism comprises a butt joint rod, a supporting rod and a supporting plate. According to the scheme, the bearing mechanism and the waste liquid stirring mechanism are arranged, the whole waste liquid stirring mechanism is supported through the bearing mechanism, and the whole waste liquid stirring mechanism can shake left and right in the sedimentation tank, so that the etching waste liquid in the sedimentation tank can be rapidly stirred, and the situation that the position of the waste liquid stirring mechanism is fixed is avoided; the stirring efficiency is relatively low; and through the arrangement of the waste liquid stirring mechanism, the waste etching liquid is turned over, so that the whole waste etching liquid and the medicament can be quickly and uniformly stirred, and the precipitation rate is greatly increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment equipment, and particularly relates to a precipitation device for the cyclic regeneration of waste etching solution. Background Art

[0002] Etching is a process of engraving or removing materials by chemical methods, which is widely used in the field of industrial manufacturing. In this process, the etching solution used often contains strong acids or other chemical components. When these liquids cannot be reused or meet the treatment standards after use, they are classified as waste etching solution. At this time, it is necessary to treat and recycle the etching waste liquid.

[0003] Currently, when the etching waste liquid is subjected to precipitation treatment, a sedimentation tank is used for precipitation. During precipitation, in order to accelerate the reaction between the etching waste liquid and the reagent, agitation equipment is generally used to agitate the etching waste liquid. Although there are various types of agitation equipment applied in the precipitation devices for the cyclic regeneration of waste etching solution at present, there are still some problems:

[0004] For example, most of the current agitation equipment drives the agitation component, such as the stirring rod, through a driving component, such as the driving shaft of a motor, so that the stirring rod moves along the axial direction of the driving shaft. Although this method can also achieve the agitation effect on the etching waste liquid, since the position of the stirring rod on the driving shaft is generally fixed, this leads to the fact that during agitation, it can only agitate at a fixed point in the etching waste liquid. And the amount of etching waste liquid treated at one time is generally large, resulting in the current agitation equipment being unable to quickly and efficiently agitate the entire etching waste liquid, thereby leading to a lower precipitation efficiency. Summary of the Invention

[0005] The present invention provides a precipitation device for the cyclic regeneration of waste etching solution, aiming to solve the problem that the agitation equipment in the current precipitation device can only agitate at a fixed point, resulting in the entire etching waste liquid not being able to be quickly agitated, and thus leading to a lower precipitation efficiency.

[0006] The present invention is realized as follows. A precipitation device for the cyclic regeneration of waste etching solution includes: a sedimentation tank, a support base, a supporting mechanism, and a waste liquid agitation mechanism. The support base is fixed on the top of the sedimentation tank. The supporting mechanism is arranged on the support base, and the waste liquid agitation mechanism is arranged on the supporting mechanism.

[0007] The supporting mechanism includes a docking rod and a support rod. The center of the docking rod is rotatably connected to the support base. One end of the support rod is fixed to the docking rod, and two support rods are symmetrically arranged. A support plate is fixed between two adjacent docking rods.

[0008] The waste liquid stirring mechanism includes a second servo motor, a fixing plate, a guide rod, a sliding seat, a stirring paddle and a synchronizing rod. The second servo motor is fixed on the support plate. The fixing plate is fixed on the guide rod, and two fixing plates are symmetrically arranged at the upper and lower ends of the guide rod. The output shaft of the second servo motor is fixed at the center of one of the fixing plates. The sliding seat is slidably connected to the guide rod. The synchronizing rod is rotatably connected to the sliding seat. The stirring paddle is fixed on the synchronizing rod and is rotatably connected to the outside of the sliding seat through the synchronizing rod, and the stirring paddle is inclined.

[0009] Preferably, the waste liquid stirring mechanism further includes a pulley, a contact plate and a clamping seat. A notch is provided inside the sliding seat. The pulley is coaxially fixed on the synchronizing rod and is located in the notch. The contact plate is fixed on the fixing plate. The clamping seats are slidably clamped in the notch of the sliding seat, and two clamping seats are symmetrically arranged, and the contact plate and the clamping seats are arranged in a one-to-one correspondence up and down.

[0010] Preferably, the waste liquid stirring mechanism further includes a ratchet tooth and a ratchet wheel. The ratchet wheel is coaxially fixed on the synchronizing rod. The ratchet tooth is arranged on one side of two adjacent clamping seats close to each other and meshes with the ratchet wheel.

[0011] Preferably, the waste liquid stirring mechanism further includes a first reset member. The first reset member is arranged inside the sliding seat, and one end of the first reset member abuts against the clamping seat.

[0012] Preferably, the supporting mechanism further includes a limiting seat, a driven rod, an adjusting disc and a connecting plate. The limiting seat is rotatably connected to the docking rod, and the rotation direction of the docking rod is perpendicular to the rotation direction of the limiting seat. A U-shaped notch is provided on the limiting seat. A convex block is provided on the supporting seat. The driven rod is slidably connected to the convex block and is simultaneously rotatably connected to the convex block. The adjusting disc is slidably clamped in the U-shaped notch of the limiting seat. One end of the connecting plate is fixed at the center of the adjusting disc, and the other end is rotatably connected to the driven rod.

[0013] Preferably, a first servo motor is further fixed on the supporting seat. One end of the driven rod away from the connecting plate is slidably sleeved on the output shaft of the first servo motor.

[0014] Preferably, a cavity is provided at one end of the driven rod away from the connecting plate, and a clamping groove is provided on the inner wall of the cavity. A clamping block is provided on the output shaft of the first servo motor, and the clamping block is slidably clamped in the clamping groove.

[0015] Preferably, the supporting mechanism also includes a limiting cylinder, a screw rod and a push plate, the limiting cylinder is coaxially fixed on the driven rod, and an annular groove is provided on the outer wall of the limiting cylinder, the screw rod is threadedly engaged with the protrusion of the support seat, the push plate is coaxially fixed to one end of the screw rod, and the push plate is slidably engaged in the annular groove of the limiting cylinder.

[0016] Preferably, a buffer plate is slidably connected to the guide rod, a second reset member is provided at the bottom of the buffer plate, and one end of the second reset member abuts against the fixed plate.

[0017] Preferably, a through hole is penetrated through the sliding seat, the guide rod is slidably connected in the through hole, and a ball is embedded and rolled on the inner wall of the through hole, and the ball abuts against the guide rod.

[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0019] 1. The supporting mechanism is used to support the waste liquid stirring mechanism as a whole, and the driven rod is used to drive the adjusting plate to move in the limit seat, and then the limit seat drives the docking rod to swing left and right on the support seat, so that the waste liquid stirring mechanism as a whole can swing left and right in the sedimentation tank, so that the etching waste liquid inside the sedimentation tank can be quickly stirred, avoiding the situation where the position of the waste liquid stirring mechanism is fixed, resulting in low stirring efficiency.

[0020] 2. By utilizing the setting of the waste liquid stirring mechanism, the inclined stirring blade generates a vertical force while rotating, thereby driving the sliding seat as a whole to slide on the guide rod, and when the sliding seat abuts against the abutment plate, the abutment plate can push the card seat to move inside the sliding seat, and make the pulley abut against the abutment plate and roll on the abutment plate, and drive the synchronous rod and the stirring blade to rotate as a whole through the pulley, and by changing the inclination direction of the stirring blade, the vertical force generated by the stirring blade when rotating in the same direction is opposite, so that the sliding seat can slide in the opposite direction on the guide rod, and the ratchet is limited by the ratchet to prevent the stirring blade from rotating, and the up and down movement of the stirring blade is realized to realize the surging of the etching waste liquid, so that the etching waste liquid as a whole and the reagent can be quickly and evenly stirred, thereby greatly accelerating the sedimentation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the sedimentation tank of the present invention;

[0022] Figure 2 It is a schematic diagram of the support base and its overall connection structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the supporting mechanism of the present invention;

[0024] Figure 4 is a schematic diagram of the sliding seat connection structure of the present invention;

[0025] Figure 5 is a schematic diagram of the card seat and its connection structure of the present invention;

[0026] Figure 6 is a schematic diagram of the fixing plate and its connection structure of the present invention;

[0027] Figure 7 is a schematic diagram of the driven rod and its partial connection structure of the present invention;

[0028] In the figure: 1, sedimentation tank; 2, support seat; 3, supporting mechanism; 31, docking rod; 32, support rod; 33, support plate; 34, limit seat; 35, driven rod; 36, adjusting disc; 37, connecting plate; 38, first servo motor; 39, limit cylinder; 310, lead screw; 311, push plate; 4, waste liquid stirring mechanism; 41, second servo motor; 42, fixing plate; 43, guide rod; 44, sliding seat; 45, stirring paddle; 46, synchronizing rod; 47, pulley; 48, abutting plate; 49, card seat; 410, ratchet teeth; 411, ratchet wheel; 412, first reset member; 413, buffer plate; 414, second reset member; 415, ball. Detailed implementation manners

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0030] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] An embodiment of the present invention provides a precipitation device for waste etching solution recycling and regeneration, as Figures 1-7As shown in the figure, it includes: a sedimentation tank 1, a support base 2, a supporting mechanism 3 and a waste liquid stirring mechanism 4. The support base 2 is fixed on the top of the sedimentation tank 1. The supporting mechanism 3 is arranged on the support base 2, and the waste liquid stirring mechanism 4 is arranged on the supporting mechanism 3;

[0032] The supporting mechanism 3 includes a docking rod 31, a support rod 32 and a support plate 33. The center of the docking rod 31 is rotatably connected to the support base 2. One end of the support rod 32 is fixed on the docking rod 31, and two support rods 32 are symmetrically arranged. The support plate 33 is fixed between two adjacent docking rods 31;

[0033] The supporting mechanism 3 further includes a limit seat 34, a driven rod 35, an adjusting disc 36 and a connecting plate 37. The limit seat 34 is rotatably connected to the docking rod 31, and the rotation direction of the docking rod 31 is perpendicular to the rotation direction of the limit seat 34. The limit seat 34 is provided with a U-shaped notch, and the support base 2 is provided with a convex block. The driven rod 35 is slidably connected to the convex block and is simultaneously rotatably connected to the convex block. The adjusting disc 36 is slidably clamped in the U-shaped notch of the limit seat 34. One end of the connecting plate 37 is fixed at the center of the adjusting disc 36, and the other end is rotatably connected to the driven rod 35.

[0034] The waste liquid stirring mechanism 4 includes a second servo motor 41, a fixing plate 42, a guide rod 43, a sliding seat 44, a stirring paddle 45 and a synchronizing rod 46. The second servo motor 41 is fixed on the support plate 33. The fixing plate 42 is fixed on the guide rod 43, and two fixing plates 42 are symmetrically arranged at the upper and lower ends of the guide rod 43. The output shaft of the second servo motor 41 is fixed at the center of one of the fixing plates 42. The sliding seat 44 is slidably connected to the guide rod 43. The synchronizing rod 46 is rotatably connected to the sliding seat 44. The stirring paddle 45 is fixed on the synchronizing rod 46 and is rotatably connected to the outside of the sliding seat 44 through the synchronizing rod 46, and the stirring paddle 45 is inclined.

[0035] The waste liquid stirring mechanism 4 further includes a pulley 47, a contact plate 48, a clamping seat 49, a ratchet tooth 410 and a ratchet wheel 411. A notch is arranged inside the sliding seat 44. The pulley 47 is coaxially fixed on the synchronizing rod 46 and is located in the notch. The contact plate 48 is fixed on the fixing plate 42. The clamping seat 49 is slidably clamped in the notch of the sliding seat 44, and two clamping seats 49 are symmetrically arranged. The contact plate 48 and the clamping seat 49 are arranged in a one-to-one correspondence up and down. The ratchet wheel 411 is coaxially fixed on the synchronizing rod 46. The ratchet tooth 410 is arranged on one side of two adjacent clamping seats 49 close to each other and meshes with the ratchet wheel 411.

[0036] It should be noted that, since the position of the existing stirring rod on the driving shaft is generally fixed, it can only stir at a fixed point of the etching waste liquid during stirring, and the amount of etching waste liquid processed at one time is generally large, resulting in the inability of the current stirring equipment to quickly and efficiently stir the etching waste liquid as a whole, thereby resulting in low sedimentation efficiency. In order to solve this problem, a supporting mechanism 3 and a waste liquid stirring mechanism 4 are provided in the present scheme, and the supporting mechanism 3 is used to support the waste liquid stirring mechanism 4 as a whole, and at the same time, the driven rod 35 is used to drive the adjusting disk 36 to be linked in the limit seat 34, and then the limit seat 34 drives the docking rod 31 to swing left and right on the support seat 2, so that the waste liquid stirring mechanism 4 as a whole can swing left and right in the sedimentation tank 1, so that the etching waste liquid inside the sedimentation tank 1 can be quickly stirred, thereby avoiding the situation where the waste liquid stirring mechanism 4 is fixed in position, resulting in low stirring efficiency;

[0037] The arrangement of the waste liquid stirring mechanism 4 is utilized to make the inclined stirring blade 45 generate a vertical force while rotating, thereby driving the sliding seat 44 as a whole to slide on the guide rod 43, and when the sliding seat 44 abuts against the abutment plate 48, the abutment plate 48 can push the card seat 49 to move into the sliding seat 44, and make the pulley 47 abut against the abutment plate 48 and roll on the abutment plate 48, and drive the synchronization rod 46 and the stirring blade 45 to rotate as a whole through the pulley 47, and by changing the inclination direction of the stirring blade 45, the vertical force generated by the stirring blade 45 when rotating in the same direction is opposite, so that the sliding seat 44 can slide in the opposite direction on the guide rod 43, and the ratchet 410 limits the ratchet 411 to prevent the stirring blade 45 from rotating, and the up and down movement of the stirring blade 45 is realized to realize the surging of the etching waste liquid, so that the etching waste liquid as a whole and the reagent can be quickly and evenly stirred, thereby greatly accelerating the sedimentation rate.

[0038] Specifically, in this embodiment, this scheme mainly includes, when in use, firstly, the etching waste liquid, the reagent and the microorganisms capable of reacting with the etching waste liquid are respectively added into the sedimentation tank 1, and then the first servo motor 38 and the second servo motor 41 are respectively started, and the driven rod 35 is driven to rotate by the first servo motor 38, and the driven rod 35 drives the adjusting disk 36 to be linked in the limit seat 34, and then the docking rod 31 is driven to swing left and right on the support seat 2 through the limit seat 34, so that the waste liquid stirring mechanism 4 as a whole can swing left and right in the sedimentation tank 1; at this time, the second servo motor 41 drives the fixing plate 42, The guide rod 43 rotates as a whole. During the rotation, the stirring blade 45 generates a vertical force, thereby driving the sliding seat 44 to slide on the guide rod 43 as a whole until the sliding seat 44 abuts against the abutment plate 48. The abutment plate 48 pushes the clamping seat 49 to move toward the inside of the sliding seat 44, and makes the pulley 47 abut against the abutment plate 48 and roll on the abutment plate 48. The pulley 47 drives the synchronization rod 46 and the stirring blade 45 to rotate as a whole, changing the inclination angle of the stirring blade 45. At this time, the vertical force generated by the stirring blade 45 is opposite, thereby causing the sliding seat 44 to slide in the opposite direction on the guide rod 43.

[0039] In a further preferred embodiment of the present invention, Figures 1-7 As shown, the waste liquid stirring mechanism 4 further includes a first restoring member 412 , which is disposed inside the sliding seat 44 , and one end of the first restoring member 412 abuts against the clamping seat 49 .

[0040] In this embodiment, the elastic force of the first restoring member 412 pushes the clamping seat 49, thereby enabling the ratchet teeth 410 and the ratchet wheel 411 to mesh with each other.

[0041] In a further preferred embodiment of the present invention, Figures 1-7 As shown, a first servo motor 38 is also fixed on the support seat 2 , and one end of the driven rod 35 away from the connecting plate 37 is slidably sleeved on the output shaft of the first servo motor 38 .

[0042] In this embodiment, the first servo motor 38 drives the driven rod 35 to rotate, and then the driven rod 35 drives the adjusting disk 36 to rotate in conjunction.

[0043] In a further preferred embodiment of the present invention, Figures 1-7 As shown, a cavity is provided on one end of the driven rod 35 away from the connecting plate 37, and a clamping groove is provided on the inner wall of the cavity. A clamping block is provided on the output shaft of the first servo motor 38, and the clamping block is slidably clamped in the clamping groove.

[0044] In this embodiment, the driven rod 35 is limited by a clamping block, so that the driven rod 35 can slide on the output shaft of the first servo motor 38 and can also be synchronously linked with the output shaft.

[0045] In a further preferred embodiment of the present invention, as Figures 1-7 shown, the supporting mechanism 3 further includes a limiting cylinder 39, a lead screw 310 and a push plate 311. The limiting cylinder 39 is coaxially fixed on the driven rod 35, and an annular notch is provided on the outer wall of the limiting cylinder 39. The lead screw 310 is in threaded engagement with the convex block of the support base 2. The push plate 311 is coaxially fixed at one end of the lead screw 310, and the push plate 311 is slidably clamped in the annular notch of the limiting cylinder 39.

[0046] In this embodiment, the movement of the push plate 311 is driven by the threaded linkage of the lead screw 310, and then the limiting cylinder 39 and the driven rod 35 are driven by the push plate 311 to slide on the output shaft of the first servo motor 38.

[0047] In a further preferred embodiment of the present invention, as Figures 1-6 shown, a buffer plate 413 is slidably connected to the guide rod 43. A second reset member 414 is provided at the bottom of the buffer plate 413, and one end of the second reset member 414 abuts against the fixed plate 42.

[0048] In this embodiment, the buffer effect on the sliding seat 44 is achieved by the buffer plate 413 abutting against the sliding seat 44.

[0049] In a further preferred embodiment of the present invention, as Figure 4 shown, a through hole is provided through the sliding seat 44. The guide rod 43 is slidably connected in the through hole, and balls 415 are embedded and rolled on the inner wall of the through hole. The balls 415 abut against the guide rod 43.

[0050] In this embodiment, the frictional resistance between the sliding seat 44 and the guide rod 43 is reduced by the rolling of the balls 415, so that the sliding seat 44 can quickly slide on the guide rod 43.

[0051] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0052] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0053] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative work, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the situation, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A precipitation device for recycling waste etching liquid, characterized in that: include: A sedimentation tank (1), a support seat (2), a supporting mechanism (3) and a waste liquid stirring mechanism (4), wherein the support seat (2) is fixed on the top of the sedimentation tank (1), the supporting mechanism (3) is arranged on the support seat (2), and the waste liquid stirring mechanism (4) is arranged on the supporting mechanism (3); The supporting mechanism (3) comprises a docking rod (31), a support rod (32) and a support plate (33); the center of the docking rod (31) is rotatably connected to the support seat (2); one end of the support rod (32) is fixed to the docking rod (31), and two of them are symmetrically arranged; the support plate (33) is fixed between two adjacent docking rods (31); The waste liquid stirring mechanism (4) comprises a second servo motor (41), a fixed plate (42), a guide rod (43), a sliding seat (44), a stirring blade (45) and a synchronization rod (46); the second servo motor (41) is fixed on the support plate (33); the fixed plate (42) is fixed on the guide rod (43), and two are symmetrically arranged at the upper and lower ends of the guide rod (43); the output shaft of the second servo motor (41) is fixed at the center of one of the fixed plates (42); the sliding seat (44) is slidably connected to the guide rod (43); the synchronization rod (46) is rotationally connected to the sliding seat (44); the stirring blade (45) is fixed on the synchronization rod (46) and rotationally connected to the outer side of the sliding seat (44) through the synchronization rod (46); and the stirring blade (45) is tilted.

2. A precipitation device for recycling waste etching liquid as claimed in claim 1, characterized in that: The waste liquid stirring mechanism (4) also includes a pulley (47), an abutment plate (48) and a clamping seat (49); a notch is provided inside the sliding seat (44); the pulley (47) is coaxially fixed on the synchronization rod (46) and is located in the notch; the abutment plate (48) is fixed on the fixed plate (42); the clamping seat (49) is slidably clamped in the notch of the sliding seat (44), and two of them are symmetrically provided, and the abutment plate (48) and the clamping seat (49) are provided one by one above and below.

3. A precipitation device for recycling waste etching liquid as claimed in claim 2, characterized in that: The waste liquid stirring mechanism (4) further comprises a ratchet (410) and a ratchet wheel (411), wherein the ratchet wheel (411) is coaxially fixed on the synchronization rod (46), and the ratchet (410) is arranged on a side close to each other on two adjacent clamping seats (49) and meshes with the ratchet wheel (411).

4. A precipitation device for recycling waste etching liquid as claimed in claim 3, characterized in that: The waste liquid stirring mechanism (4) further comprises a first resetting member (412), wherein the first resetting member (412) is arranged inside the sliding seat (44), and one end of the first resetting member (412) abuts against the clamping seat (49).

5. A precipitation device for recycling waste etching liquid as claimed in claim 1, characterized in that: The supporting mechanism (3) further includes a limit seat (34), a driven rod (35), an adjusting disc (36) and a connecting plate (37). The limit seat (34) is rotatably connected to the docking rod (31), and the rotation direction of the docking rod (31) is perpendicular to the rotation direction of the limit seat (34). The limit seat (34) is provided with a U-shaped notch, and the supporting seat (2) is provided with a convex block. The driven rod (35) is slidably connected to the convex block and is simultaneously rotatably connected to the convex block. The adjusting disc (36) is slidably clamped in the U-shaped notch of the limit seat (34). One end of the connecting plate (37) is fixed at the center of the adjusting disc (36), and the other end is rotatably connected to the driven rod (35).

6. A precipitation device for recycling waste etching liquid as claimed in claim 5, characterized in that: A first servo motor (38) is further fixed on the supporting seat (2). One end of the driven rod (35) far from the connecting plate (37) is slidably sleeved on the output shaft of the first servo motor (38).

7. A precipitation device for recycling waste etching liquid as claimed in claim 6, characterized in that: One end of the driven rod (35) far from the connecting plate (37) is provided with a cavity, and a clamping groove is arranged on the inner wall of the cavity. A clamping block is arranged on the output shaft of the first servo motor (38), and the clamping block is slidably clamped in the clamping groove.

8. A precipitation device for recycling waste etching liquid as claimed in claim 5, characterized in that: The supporting mechanism (3) further includes a limiting cylinder (39), a lead screw (310) and a pushing disc (311). The limiting cylinder (39) is coaxially fixed on the driven rod (35), and an annular notch is arranged on the outer wall of the limiting cylinder (39). The lead screw (310) is in threaded cooperation with the convex block of the supporting seat (2). The pushing disc (311) is coaxially fixed at one end of the lead screw (310), and the pushing disc (311) is slidably clamped in the annular notch of the limiting cylinder (39).

9. A precipitation device for recycling waste etching liquid as claimed in claim 1, characterized in that: A buffer plate (413) is slidably connected to the guiding rod (43). A second resetting member (414) is arranged at the bottom of the buffer plate (413), and one end of the second resetting member (414) abuts against the fixing plate (42).

10. A precipitation device for recycling waste etching liquid as claimed in claim 1, characterized in that: A through hole is formed through the sliding seat (44). The guiding rod (43) is slidably connected in the through hole, and a ball (415) is embedded and rolled on the inner wall of the through hole. The ball (415) abuts against the guiding rod (43).

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