CN115572966A

CN115572966A - Metal casting surface passivation method

Info

Publication number: CN115572966A
Application number: CN202211093619.2A
Authority: CN
Inventors: 陆国伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-01-06

Abstract

The invention discloses a metal casting surface passivation method, which relates to the technical field of metal casting surface passivation and comprises a passivation treatment table, wherein a fixed frame is arranged above the passivation treatment table, a vertical plate is fixedly arranged at the bottom of the fixed frame, a waste liquid collection tank is arranged on the inner side of the vertical plate, the waste liquid collection tank is fixedly arranged on the surface of the passivation treatment table, a liquid discharge hole is formed in the waste liquid collection tank, and a stirring device is fixedly arranged on the surface of the passivation treatment table. According to the invention, the stirring shaft is driven to rotate by starting the stirring motor, stirring is carried out through the matching between the stirring blades and the stirring paddle, then the deodorization device is arranged, in the stirring process, pungent smell emitted by liquid is absorbed and treated, and the liquid is stored to the inside through the matching between the liquid outlet pipe and the liquid storage tank, so that the passivation efficiency is improved, and the working efficiency of the device is improved.

Description

Metal casting surface passivation method

Technical Field

The invention relates to the technical field of metal casting surface passivation, in particular to a metal casting surface passivation method.

Background

After the metal casting is machined, passivation treatment is needed, so that the surface of the metal casting is covered with a layer of oxidation-resistant film, and the metal casting has longer service life. However, after the passivation solution is smeared on a galvanized plate, the passivation solution is easy to drop along the galvanized plate, and the passivation solution contains more toxic and harmful substances, so that the passivation solution is easy to harm the health of workers and can make the surface of metal in a passive state. The traditional passivation technology can not conveniently recover the passivation solution, thereby increasing the cost of enterprises and unnecessary waste. In view of the above drawbacks, it is desirable to design a metal casting surface passivation apparatus.

If the Chinese invention discloses the number: CN 113088954A's a passivation device for metal casting relates to metal casting surface treatment's field, and it hangs subassembly and reaction subassembly including navigating, and the reaction subassembly is used for all kinds of chemical solution splendid attire to use, and the metal casting is through placing in order to accomplish passivation treatment in corresponding chemical solution soaks in, and navigating hangs the subassembly and is used for hoist and mount, carry the metal casting in batches for the metal casting can shift between all kinds of chemical solution. The application has the effect of simplifying the structure of the metal casting passivation device in the related art.

The following problems exist in the prior art:

1. the existing metal casting surface passivation device reduces the passivation efficiency due to the uneven stirring of passivation solution in the spraying process in the actual use process, thereby reducing the working efficiency of the passivation device.

2. The existing metal casting surface passivation device is mostly directly treated after passivation solution is used in the actual use process, the passivation solution cannot be conveniently recovered, the waste of the passivation solution is easily caused, and the enterprise cost is increased, so that the utilization efficiency of the passivation device is reduced.

Disclosure of Invention

The invention provides a method for passivating the surface of a metal casting, which aims to solve the problems in the background technology.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

in a first aspect, a method for passivating a surface of a metal casting comprises the following steps:

step one, clamping and fixing the metal casting.

And secondly, passivating the surface of the substrate by adopting a passivation device through a spraying process.

And step three, rotating the metal casting when the metal casting is clamped and fixed, so that the passivation efficiency is improved.

And step four, collecting the sprayed passivation solution, and treating for recycling.

The second aspect, a metal casting surface device, including passivation platform, passivation platform's top is provided with fixed frame, fixed frame's bottom fixed mounting has the riser, the inboard of riser is provided with the waste liquid collecting pit, waste liquid collecting pit fixed mounting is on passivation platform's surface, the outage has been seted up to the inside of waste liquid collecting pit, passivation platform's fixed surface installs agitating unit, passivation platform's bottom fixed mounting has waste liquid recovery unit, one side fixedly connected with transfer line of waste liquid recovery unit, the one end fixed mounting of transfer line has the circulating pump, agitating unit is including agitator tank, agitator motor and (mixing) shaft, agitator motor fixed mounting is at the top of agitator tank, waste liquid recovery unit is including device box, waste liquid treatment chamber and waste liquid treater, waste liquid treatment chamber fixed mounting is in the inboard of device box.

The technical scheme of the invention is further improved as follows: fixed frame's side fixed mounting has the fixed plate, the top fixed mounting of fixed plate has electronic slide rail, the inner wall slidable mounting of electronic slide rail has the slide, the bottom fixedly connected with connecting rod of slide, the one end fixedly connected with liquid reserve tank of connecting rod, the bottom fixed mounting of liquid reserve tank has the passivation shower nozzle, the passivation shower nozzle sets up directly over the waste liquid collecting pit, drives the connecting rod by electronic slide rail cooperation slide and slides in inside, sprays its metal casting surface with passivation liquid by liquid reserve tank cooperation passivation shower nozzle again and carries out passivation treatment.

The technical scheme of the invention is further improved as follows: one side of riser is provided with hand turning handle, the inside fixed mounting of hand turning handle has the threaded rod, the surface screw thread of threaded rod has cup jointed the screw sleeve, the telescopic fixed surface of screw sleeve installs fixed lasso, makes the threaded rod rotate through hand turning handle to the screw sleeve slides on its surface, thereby drives fixed lasso and slides, passivates through the synchronization rate between the two.

The technical scheme of the invention is further improved as follows: the inside of riser is provided with rotary clamping mechanism, rotary clamping mechanism is including the fixing base, fixing base fixed mounting is in the inboard of riser, the fixed surface of fixing base installs driving motor, driving motor's output fixedly connected with pivot, the one end fixed mounting of pivot has the carousel, the surface of pivot is connected with the internal surface rotation of fixed lasso, the fixed surface of carousel installs the chucking dish, and the metal casting presss from both sides tight back with it through setting up the chucking dish, then drives its pivot cooperation carousel and makes it rotate through starting driving motor.

The technical scheme of the invention is further improved as follows: the inside fixed mounting of chucking dish has the retainer plate, the fixed surface of retainer plate has the pneumatic cylinder, the inside swing joint of pneumatic cylinder has the piston, the bottom fixedly connected with piston rod of piston, the one end fixed mounting of piston rod has the tight piece of clamp.

The technical scheme of the invention is further improved as follows: the one end of (mixing) shaft and agitator motor's output fixed connection, the fixed surface of (mixing) shaft installs stirring vane and stirring paddle piece, the outside fixedly connected with drain pipe and the feed liquor pipe of stirring box, the one end of feed liquor pipe and the output fixed connection of circulating pump, the one end of drain pipe and the inside of the back fixed connection of liquid reserve tank and extending to the liquid reserve tank, the inner wall fixed mounting of stirring box has deodorizing device, extracts to the inside of stirring box by the circulating pump, drives the (mixing) shaft through starting agitator motor and rotates to stir through the cooperation between stirring vane and the stirring paddle piece, then through setting up deodorizing device, at the stirring in-process, the pungent smell that liquid distributed out absorbs the processing to through the cooperation between drain pipe and the liquid reserve tank, save it to inside.

The technical scheme of the invention is further improved as follows: the top fixed mounting of device box has the polished rod, the inside slidable mounting of polished rod has the hydraulic stem, the one end fixed mounting of hydraulic stem has the filter, the bottom fixed mounting of filter has compression spring, when will spraying the passivation through setting up the waste liquid collecting pit, produced waste liquid is collected to discharge it to waste liquid recovery unit's inside by its inside leakage fluid dram, passivation liquid is at decurrent in-process, has caused certain pressure to the filter, so make compression spring and hydraulic stem descend, and the waste liquid passes through the liquid outlet that sets up, trickles down to the inside of collecting the funnel.

The technical scheme of the invention is further improved as follows: compression spring fixed mounting has seted up the liquid outlet at the top of waste liquid treatment room, the liquid outlet has been seted up on the surface of filter, the below of liquid outlet is provided with the collection funnel, collect funnel fixed mounting in the inside of waste liquid treatment room, the bottom of collecting the funnel and waste liquid treatment ware's top fixed connection, waste liquid treatment ware fixed mounting is in the inside of waste liquid treatment room, owing to the inner wall of collecting the funnel is the landslide form, so the waste liquid is trickled to the waste liquid treatment ware along its inside and is handled, cooperates again and recycles.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:

1. the invention provides a method for passivating the surface of a metal casting, which is characterized in that the metal casting is clamped by arranging a clamping disc, then a rotating shaft of the metal casting is driven to be matched with a rotary disc to rotate by starting a driving motor, then an electric slide rail is matched with a slide seat to drive a connecting rod to slide inside, and then a liquid storage tank is matched with a passivation spray head to spray passivation liquid on the surface of the metal casting for passivation treatment, so that the working efficiency of the device is improved.

2. The invention provides a method for passivating the surface of a metal casting, which adopts the joint cooperation of a device box body, a filter plate, a polished rod, a collecting funnel and a waste liquid processor, and solves the problems that most of passivating liquid is directly treated after the passivating liquid is used in the actual use process of a casting surface passivating device, the passivating liquid cannot be conveniently recovered, the waste of the passivating liquid is easily caused, and the enterprise cost is increased, so that the use efficiency of the device is improved.

3. The invention provides a metal casting surface passivation method, which is characterized in that when spray passivation is carried out by arranging a waste liquid collecting tank, the generated waste liquid is collected and discharged into a waste liquid recovery device through a liquid outlet in the waste liquid collecting tank, a certain pressure is applied to a filter plate in the down-flow process of passivation liquid, so that a compression spring and a hydraulic rod are lowered, the waste liquid flows down into a collecting hopper through the arranged liquid outlet, and the waste liquid flows to a waste liquid processor for treatment due to the fact that the inner wall of the collecting hopper is in a landslide shape, and then the waste liquid flows along the inner part of the collecting hopper to be recycled by matching with a circulating pump.

4. The invention provides a metal casting surface passivation method, wherein waste liquid is pumped into a stirring box body by a circulating pump after being treated, a stirring shaft is driven to rotate by starting a stirring motor, the waste liquid is stirred by matching between stirring blades and stirring blades, then a deodorization device is arranged, pungent smell emitted by the liquid is absorbed and treated in the stirring process, and the pungent smell is stored into the interior by matching between a liquid outlet pipe and a liquid storage box, so that the passivation efficiency is improved, the problem that the passivation efficiency is reduced due to the fact that the passivation liquid is not uniformly stirred in the actual use process of the metal casting surface passivation device is solved, and the working efficiency of the device is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic perspective view of a structural passivation apparatus of the present invention;

FIG. 3 is a perspective view of a structural rotary clamping mechanism of the present invention;

FIG. 4 is a cross-sectional view of a structural chuck disk of the present invention;

FIG. 5 is a schematic perspective sectional view of a structural stirring device of the present invention;

FIG. 6 is a schematic sectional view of a waste liquid recovery apparatus according to the present invention.

In the figure: 1. a passivation treatment stage; 2. a fixed frame; 21. a fixing plate; 22. an electric slide rail; 23. a slide base; 24. a connecting rod; 25. a liquid storage tank; 26. passivating the spray head; 3. a vertical plate; 31. a rotating handle is rotated by hand; 32. a threaded rod; 33. a threaded sleeve; 34. fixing the ferrule; 4. a waste liquid collecting tank; 5. a rotary clamping mechanism; 51. a fixed seat; 52. a drive motor; 53. a rotating shaft; 54. a turntable; 55. a chucking plate; 551. a stationary ring; 552. a pneumatic cylinder; 553. a piston; 554. a piston rod; 555. a clamping block; 6. a stirring device; 61. a stirring box body; 62. a stirring motor; 63. a stirring shaft; 64. a stirring blade; 65. a stirring blade; 66. a liquid outlet pipe; 67. a liquid inlet pipe; 7. a waste liquid recovery device; 71. a device case; 711. a waste liquid treatment chamber; 72. a filter plate; 721. a compression spring; 73. a polish rod; 731. a hydraulic lever; 74. a collection funnel; 75. a waste liquid processor; 8. and a circulating pump.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in fig. 1-6, the present invention provides a method for passivating a surface of a metal casting, comprising the steps of:

step one, clamping and fixing the metal casting.

And secondly, passivating the surface of the substrate by adopting a spraying process through a passivating device.

And step three, rotating the metal casting when clamping and fixing, and improving the passivation efficiency.

Example 2

As shown in fig. 1-6, the present invention further provides a metal casting surface passivation device, including a passivation processing table 1, a fixed frame 2 is disposed above the passivation processing table 1, a vertical plate 3 is fixedly mounted at the bottom of the fixed frame 2, a waste liquid collecting tank 4 is disposed inside the vertical plate 3, the waste liquid collecting tank 4 is fixedly mounted on the surface of the passivation processing table 1, a liquid discharge hole is disposed inside the waste liquid collecting tank 4, a stirring device 6 is fixedly mounted on the surface of the passivation processing table 1, a waste liquid recovery device 7 is fixedly mounted at the bottom of the passivation processing table 1, a liquid transport tube is fixedly connected to one side of the waste liquid recovery device 7, a circulating pump 8 is fixedly mounted at one end of the liquid transport tube, the stirring device 6 includes a stirring box body 61, a stirring motor 62 and a stirring shaft 63, the stirring motor 62 is fixedly mounted at the top of the stirring box body 61, the waste liquid recovery device 7 includes a device box body 71, a waste liquid treatment chamber 711 and a waste liquid treater 75, the waste liquid treatment chamber 711 is fixedly mounted inside the device box body 71, a fixed plate 21 is fixedly mounted at the side of the fixed frame 2, an electric slide rail 22 is fixedly mounted at the top of the fixed slide rail 22, a slide rail 23 is slidably mounted on the inner wall of the slide seat 23, a slide seat 24 is fixedly connected with a fixed connection rod 24, a fixed screw rod 32, a spray head 33 fixed on the bottom of the liquid storage tank is fixedly connected with a fixed screw rod 32, a sleeve head 33, a fixed screw rod 32, a sleeve head 33 fixed on the surface of the fixed screw rod 32, a fixed sleeve head of the sleeve head 33 fixed on the fixed screw rod 32 is mounted on the fixed shaft 32, a fixed screw rod 32, a sleeve head of the fixed screw head 33 fixed on the sleeve head of the sleeve head 33 fixed on the fixed handle 32, a fixed screw head of the sleeve 3, a fixed screw rod 32 is mounted inside the sleeve 3, a fixed shaft 32, a fixed screw rod 32 is mounted.

Further, after the metal casting is clamped by the clamping disc 55, the driving motor 52 is started to drive the rotating shaft 53 of the metal casting to be matched with the rotating disc 54 to rotate, the electric sliding rail 22 is matched with the sliding seat 23 to drive the connecting rod 24 to slide inside, and in the sliding process, the threaded rod 32 is rotated by the hand-operated rotating handle 31, so that the threaded sleeve 33 slides on the surface of the threaded sleeve, the fixed ferrule 34 is driven to slide, passivation is performed between the metal casting and the fixed ferrule by the synchronous rate, and the passivation effect is improved.

Example 3

As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the inner side of the vertical plate 3 is provided with a rotary clamping mechanism 5, the rotary clamping mechanism 5 includes a fixed seat 51, the fixed seat 51 is fixedly installed on the inner side of the vertical plate 3, a driving motor 52 is fixedly installed on the surface of the fixed seat 51, an output end of the driving motor 52 is fixedly connected with a rotating shaft 53, one end of the rotating shaft 53 is fixedly installed with a rotating disc 54, the outer surface of the rotating shaft 53 is rotatably connected with the inner surface of the fixing collar 34, a clamping disc 55 is fixedly installed on the surface of the rotating disc 54, a fixing ring 551 is fixedly installed inside the clamping disc 55, a pneumatic cylinder 552 is fixedly installed on the surface of the fixing ring 551, a piston 553 is movably connected inside the pneumatic cylinder 552, a piston rod 554 is fixedly connected to the bottom of the piston 553, one end of the piston rod 554 is fixedly installed with a clamping block 555, and after the metal casting is clamped by the clamping disc 55, the driving the rotating shaft 53 to cooperate with the rotating disc 54 to rotate by starting the driving motor 52.

Example 4

As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the one end of (mixing) shaft 63 and the output fixed connection of agitator motor 62, the fixed surface of (mixing) shaft 63 installs stirring vane 64 and stirring paddle 65, the outside fixedly connected with drain pipe 66 and the feed liquor pipe 67 of stirring box 61, the one end of feed liquor pipe 67 and the output fixed connection of circulating pump 8, the one end of drain pipe 66 and the inside of liquid reserve tank 25 just extend to, the inner wall fixed mounting of stirring box 61 has deodorizing device, the waste liquid is through handling the back, extract to the inside of stirring box 61 by circulating pump 8, drive (mixing) shaft 63 through starting agitator motor 62 and rotate, and stir through the cooperation between stirring vane 64 and stirring paddle 65, then through setting up deodorizing device, in the stirring process, the pungent smell that liquid distributed out absorbs the processing, and through the cooperation between drain pipe 66 and liquid reserve tank 25, save it to inside.

Example 5

As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, a polish rod 73 is fixedly installed at the top of the device box 71, a hydraulic rod 731 is installed inside the polish rod 73 in a sliding mode, a filter plate 72 is fixedly installed at one end of the hydraulic rod 731, a compression spring 721 is fixedly installed at the bottom of the filter plate 72, the compression spring 721 is fixedly installed at the top of the waste liquid treatment chamber 711, a liquid outlet is formed in the surface of the filter plate 72, a collection funnel 74 is arranged below the liquid outlet, the collection funnel 74 is fixedly installed inside the waste liquid treatment chamber 711, the bottom of the collection funnel 74 is fixedly connected with the top of the waste liquid processor 75, the waste liquid processor 75 is fixedly installed inside the waste liquid treatment chamber 711, when spraying passivation is carried out through the waste liquid collection pool 4, generated waste liquid is collected and is discharged to the inside of the waste liquid recovery device 7 through a liquid outlet inside the waste liquid collection funnel, passivation liquid is under certain pressure in the downward flow process, so that the compression spring 731 and the waste liquid drop, the waste liquid passes through the arranged liquid outlet, the waste liquid drops to the inside of the collection funnel 74, and the inner wall of the collection funnel 74 is in a sliding slope shape, so that the inner wall of the collection funnel 74 drops to the waste liquid processor 721 and then flows to the waste liquid to be treated, and then to be recycled by the waste liquid processor 8 in a circulating pump.

The working principle of the method for passivating the surface of a metal casting is described in detail below.

As shown in fig. 1-6, after a metal casting is clamped by a clamping disc 55, a driving motor 52 is started to drive a rotating shaft 53 thereof to be matched with a rotating disc 54 to rotate, an electric slide rail 22 is matched with a slide seat 23 to drive a connecting rod 24 to slide inside, a liquid storage tank 25 is matched with a passivation spray nozzle 26 to spray passivation liquid on the surface of the metal casting for passivation, a waste liquid collecting tank 4 is arranged to collect the generated waste liquid and discharge the waste liquid to the inside of a waste liquid recovery device 7 through a liquid discharge port inside, the passivation liquid generates certain pressure on a filter plate 72 in the process of flowing down, so that a compression spring 721 and a hydraulic rod 731 are descended, the waste liquid flows down to the inside of a collecting hopper 74 through the arranged liquid discharge port, the waste liquid flows to a waste liquid processor 75 along the inside due to the inner wall of the collecting hopper 74 being in a slope shape, and is recycled by being matched with a circulating pump 8, the waste liquid is extracted to the inside of a stirring hopper 61, is driven to rotate by a stirring motor 62, flows to a stirring blade 65, is matched with a stirring paddle 64 to perform odor removal processing, and the odor is absorbed by the stirring paddle 64, and is absorbed by the stirring pump 25 and absorbed by the stirring paddle 64, and the stirring paddle is absorbed in the process of the stirring paddle and absorbed by the stirring pump 8.

The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.

Claims

1. A metal casting surface passivation method is characterized in that: the method comprises the following steps:

step one, clamping and fixing a metal casting;

secondly, passivating the surface of the substrate by adopting a passivation device through a spraying process;

step three, rotating the metal casting when clamping and fixing, so as to improve the passivation efficiency;

2. The metal casting surface passivation method according to claim 1, wherein a metal casting surface passivation device is provided, the metal casting surface passivation device comprises a passivation treatment table (1), a fixed frame (2) is arranged above the passivation treatment table (1), a vertical plate (3) is fixedly arranged at the bottom of the fixed frame (2), a waste liquid collection tank (4) is arranged on the inner side of the vertical plate (3), the waste liquid collection tank (4) is fixedly arranged on the surface of the passivation treatment table (1), and a liquid discharge hole is formed in the waste liquid collection tank (4), and the metal casting surface passivation method is characterized in that: fixed surface of passivation treatment platform (1) installs agitating unit (6), the bottom fixed mounting of passivation treatment platform (1) has waste liquid recovery unit (7), one side fixedly connected with transfer line of waste liquid recovery unit (7), the one end fixed mounting of transfer line has circulating pump (8), agitating unit (6) are including agitator tank (61), agitator motor (62) and (mixing) shaft (63), agitator motor (62) fixed mounting is at the top of agitator tank (61), waste liquid recovery unit (7) are including device box (71), waste liquid treatment chamber (711) and waste liquid treater (75), waste liquid treatment chamber (711) fixed mounting is in the inboard of device box (71).

3. A metal casting surface passivation device as claimed in claim 2, wherein: fixed frame's (2) side fixed mounting has fixed plate (21), the top fixed mounting of fixed plate (21) has electronic slide rail (22), the inner wall slidable mounting of electronic slide rail (22) has slide (23), the bottom fixedly connected with connecting rod (24) of slide (23), the one end fixedly connected with liquid reserve tank (25) of connecting rod (24), the bottom fixed mounting of liquid reserve tank (25) has passivation shower nozzle (26), passivation shower nozzle (26) set up directly over waste liquid collecting pit (4).

4. A metal casting surface passivation device as claimed in claim 2, wherein: one side of riser (3) is provided with hand turning handle (31), the inside fixed mounting of hand turning handle (31) has threaded rod (32), the surperficial screw thread of threaded rod (32) has cup jointed threaded sleeve (33), the fixed surface of threaded sleeve (33) installs fixed lasso (34).

5. A metal casting surface passivation device as claimed in claim 2, wherein: the inner side of the vertical plate (3) is provided with a rotary clamping mechanism (5), the rotary clamping mechanism (5) comprises a fixed seat (51), the fixed seat (51) is fixedly arranged on the inner side of the vertical plate (3), a driving motor (52) is fixedly arranged on the surface of the fixed seat (51), a rotating shaft (53) is fixedly connected with the output end of the driving motor (52), a rotating disc (54) is fixedly arranged at one end of the rotating shaft (53), the outer surface of the rotating shaft (53) is rotatably connected with the inner surface of the fixed ferrule (34), and a clamping disc (55) is fixedly arranged on the surface of the rotating disc (54).

6. A metal casting surface passivation device as claimed in claim 5, wherein: the clamping device is characterized in that a fixing ring (551) is fixedly mounted inside the clamping disc (55), a pneumatic cylinder (552) is fixedly mounted on the surface of the fixing ring (551), a piston (553) is movably connected inside the pneumatic cylinder (552), a piston rod (554) is fixedly connected to the bottom of the piston (553), and a clamping block (555) is fixedly mounted at one end of the piston rod (554).

7. A metal casting surface passivation device as claimed in claim 2, wherein: the one end of (mixing) shaft (63) and the output fixed connection of agitator motor (62), the fixed surface of (mixing) shaft (63) installs stirring vane (64) and stirring paddle (65), the outside fixedly connected with drain pipe (66) and feed liquor pipe (67) of agitator tank body (61), the one end of feed liquor pipe (67) and the output fixed connection of circulating pump (8), the inside of the one end of drain pipe (66) and the back fixed connection of liquid reserve tank (25) and extending to liquid reserve tank (25), the inner wall fixed mounting of agitator tank body (61) has deodorizing device.

8. A metal casting surface passivation device as claimed in claim 2, wherein: the device is characterized in that a polish rod (73) is fixedly mounted at the top of the device box body (71), a hydraulic rod (731) is slidably mounted inside the polish rod (73), a filter plate (72) is fixedly mounted at one end of the hydraulic rod (731), and a compression spring (721) is fixedly mounted at the bottom of the filter plate (72).

9. A metal casting surface passivation device in accordance with claim 8, wherein: compression spring (721) fixed mounting is at the top of waste liquid treatment chamber (711), the liquid outlet has been seted up on the surface of filter (72), the below of liquid outlet is provided with collection funnel (74), collection funnel (74) fixed mounting is in the inside of waste liquid treatment chamber (711), the bottom of collection funnel (74) and the top fixed connection of waste liquid treater (75), waste liquid treater (75) fixed mounting is in the inside of waste liquid treatment chamber (711).