Nitriding treatment equipment for metal processing

Abstract

The utility model discloses nitriding treatment equipment for metal processing, which structurally comprises a treatment box, and a PTC (Positive Temperature Coefficient) heater is arranged on the back surface of the treatment box; and the sealing assembly comprises a sealing door, movable blocks are fixedly connected to the two sides of the sealing door, and the movable blocks are slidably connected into movable grooves formed in the inner wall of the treatment box. When the device is used, the storage rack with the metal parts is fixed through the rectangular groove, then the interior of the treatment box is sealed through the sealing assembly, the metal parts in the treatment box are preheated through the PTC heater, ammonia gas is conveyed into the cavity through the gas inlet pipe after preheating and enters the treatment box through the vent holes, and then the exhaust fan is started to exhaust the ammonia gas. When the ammonia gas rises from the bottom, the ammonia gas and the metal part generate a nitridation reaction, the ammonia gas which does not participate in the reaction enters the filter box through the transmission pipe, and the gas after water washing is discharged through the filter plate, so that the exhaust emission is effectively reduced, and the harm of the exhaust gas to the environment and human health in the nitridation treatment process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal nitriding treatment, in particular to a nitriding treatment device for metal processing. Background Art

[0002] Metal heat treatment is mainly divided into three categories: overall heat treatment, surface heat treatment and chemical heat treatment. Among them, nitriding treatment is an important part of chemical heat treatment. Nitriding treatment is mainly used to improve the hardness and wear resistance of the metal surface. It is necessary to first thoroughly clean the metal surface to remove oil, rust and other impurities, then preheat the metal parts. After preheating, nitrogen gas is introduced into the furnace to make it contact with the metal surface. Nitrogen atoms will penetrate into the metal surface layer and react with it to form a nitride film, thereby increasing the hardness and corrosion resistance of the metal surface, improving the performance of metal parts, and being a commonly used material improvement method in the manufacturing industry.

[0003] However, currently, ammonia gas is usually used as the nitrogen source. Ammonia gas will decompose into nitrogen gas and hydrogen gas under high-temperature and oxygen-deficient conditions. Since a part of the ammonia gas may not participate in the reaction during the nitriding process, the traditional nitriding treatment equipment lacks a filtering device for waste gas, and this part of the waste gas may be harmful to the environment and human health. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] Therefore, to solve the above technical problems, the utility model provides the following technical solution: a nitriding treatment device for metal processing, and this nitriding treatment device for metal processing includes:

[0006] A processing box, on the back of which a PTC heater is installed;

[0007] A sealing assembly, including a sealing door. On both sides of the sealing door, movable blocks are fixedly connected. The movable blocks are slidably connected in movable grooves opened on the inner wall of the processing box. On the inner wall of the movable groove, a screw rod is installed. The movable block on one side of the sealing door is threadedly connected to the surface of the screw rod. One end of the screw rod is fixedly connected with a driven gear, and a driving gear is meshed on the surface of the driven gear. One end of the driving gear is fixedly connected with a handle;

[0008] Filtering component, including a filtering box, the filtering box is fixedly connected to one side of the processing box, the top of the filtering box is fixedly connected with a transmission pipe, one end of the transmission pipe is fixedly connected to the output end of the exhaust fan, the exhaust fan is installed on the inner top wall of the processing box, and an exhaust port is also provided at the top of the filtering box.

[0009] As a preferred solution of the nitriding treatment equipment for metal processing of the present invention, wherein: a cavity is opened at the bottom of the processing box, a ventilation hole is opened at the inner top wall of the cavity, and an intake pipe is installed on the inner side wall of the cavity.

[0010] As a preferred solution of the nitriding treatment equipment for metal processing of the present invention, wherein: a rectangular groove is opened on the inner wall of the processing box, a storage rack is slidably connected inside the rectangular groove, and through grooves are opened on the storage rack.

[0011] As a preferred solution of the nitriding treatment equipment for metal processing of the present invention, wherein: a sleeve hole is opened on the movable block on the other side of the sealing door, and a connecting rod is inserted into the sleeve hole.

[0012] As a preferred solution of the nitriding treatment equipment for metal processing of the present invention, wherein: a drain pipe is fixedly connected to the filtering box, and a valve is provided on the drain pipe.

[0013] As a preferred solution of the nitriding treatment equipment for metal processing of the present invention, wherein: a sliding groove is opened on the inner wall of the exhaust port, a sliding block is slidably connected inside the sliding groove, and a filter plate is fixedly connected to the sliding block.

[0014] Advantages of the present invention:

[0015] During use, the storage rack with metal parts is fixed through the rectangular groove, and then the inside of the processing box is sealed through the sealing component. The metal parts inside the processing box are preheated by the PTC heater. After preheating, ammonia gas is transported into the cavity through the intake pipe and enters the processing box through the ventilation hole. Then, the exhaust fan is started to extract the ammonia gas. When the ammonia gas rises from the bottom, it reacts with the metal parts to produce a nitriding reaction, with a wider coverage area and better nitriding effect. The unreacted ammonia gas enters the filtering box through the transmission pipe. There is clean water in the filtering box, and ammonia gas has a certain solubility in water. The gas after being washed by water is then discharged through the filter plate, thereby effectively reducing waste gas emissions and reducing the harm of waste gas to the environment and human health during the nitriding treatment process. Description of the drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0017] Figure 1 It is a schematic structural diagram of the overall nitriding treatment equipment for metal processing of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the treatment tank of the nitriding treatment equipment for metal processing of the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the filtration component of the nitriding treatment equipment for metal processing of the present utility model.

[0020] Figure 4 It is a schematic structural diagram of the sealing door of the nitriding treatment equipment for metal processing of the present utility model.

[0021] Figure 5 It is a schematic structural diagram of Figure A of the nitriding treatment equipment for metal processing of the present utility model.

[0022] Figure 6 It is a schematic cross-sectional structural diagram of the overall nitriding treatment equipment for metal processing of the present utility model.

[0023] In the figure: 100, treatment tank; 101, PTC heater; 102, intake pipe; 103, storage rack;

[0024] 200, sealing component; 201, sealing door; 202, movable block; 2021, connecting rod; 203, screw; 204, driven gear; 205, driving gear; 206, handle;

[0025] 300, filtration component; 301, filtration tank; 3011, drain pipe; 3012, valve; 302, transfer pipe; 303, exhaust fan; 304, exhaust port; 3041, slider; 3042, filter plate. Specific embodiments

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model in conjunction with the drawings in the specification.

[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that mutually excludes other embodiments.

[0029] Thirdly, the present utility model is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present utility model, for the sake of convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0030] Embodiment 1

[0031] Referring to Figure 1 -6, which is the first embodiment of the present utility model, a nitriding treatment device for metal processing is provided. This structure includes:

[0032] A processing chamber 100, on the back of which a PTC heater 101 is installed. The metal parts in the processing chamber 100 can be preheated through the PTC heater 101, which can remove the moisture and oil on the surface of the metal parts and improve the bonding force of the nitrided layer;

[0033] A sealing assembly 200, including a sealing door 201. On both sides of the sealing door 201, movable blocks 202 are fixedly connected. The movable blocks 202 are slidably connected to the movable grooves opened on the inner wall of the processing chamber 100. A screw 203 is installed on the inner wall of the movable groove. The movable block 202 on one side of the sealing door 201 is threadedly connected to the surface of the screw 203. One end of the screw 203 is fixedly connected to a driven gear 204. A driving gear 205 is meshed with the surface of the driven gear 204. One end of the driving gear 205 is fixedly connected to a handle 206. When in use, rotating the handle 206 drives the driving gear 205 to rotate. The driving gear 205 drives the engaged driven gear 204 to rotate. The driven gear 204 drives the screw 203 to rotate, so that the movable block 202 and the sealing door 201 move upward. At this time, the metal parts can be taken and placed. Rotating the handle 206 in the reverse direction makes the screw 203 rotate in the reverse direction, driving the sealing door 201 to move downward to seal the inside of the processing chamber 100;

[0034] Filtering component 300, including a filtering box 301, the filtering box 301 is fixedly connected to one side of the processing box 100. A transmission pipe 302 is fixedly connected to the top of the filtering box 301. One end of the transmission pipe 302 is fixedly connected to the output end of an exhaust fan 303. The exhaust fan 303 is installed on the inner top wall of the processing box 100. An exhaust port 304 is also provided on the top of the filtering box 301. When in use, the exhaust fan 303 is started. The exhaust fan 303 extracts ammonia gas from the processing box 100. When the ammonia gas rises from the bottom, it undergoes a nitriding reaction with the metal parts, and the nitriding effect is better with a wider coverage. The unreacted ammonia gas enters the filtering box 301 through the transmission pipe 302. The filtering box 301 is filled with clean water. Ammonia gas has a certain solubility in water, which can effectively reduce waste gas emissions.

[0035] Furthermore, a cavity is opened at the bottom of the processing box 100. An air vent is opened on the inner top wall of the cavity. An inlet pipe 102 is installed on the inner side wall of the cavity. The ammonia gas is transported into the cavity through the inlet pipe 102 and enters the processing box 100 through the air vent for nitriding treatment of the metal parts on the storage rack 103.

[0036] Furthermore, a rectangular groove is opened on the inner wall of the processing box 100. A storage rack 103 is slidably connected inside the rectangular groove. Through grooves are opened on the storage rack 103. The metal parts to be nitrided can be placed through the storage rack 103. The ammonia gas passes upward through the through grooves, and the metal parts on the storage rack 103 can be nitrided.

[0037] Furthermore, a socket hole is opened on the movable block 202 on the other side of the sealing door 201. A connecting rod 2021 is inserted into the socket hole. The socket hole is sleeved on the surface of the connecting rod 2021. The connecting rod 2021 plays a limiting role on the movable block 202, making the lifting of the sealing door 201 more stable.

[0038] Furthermore, a drain pipe 3011 is fixedly connected to the filtering box 301. A valve 3012 is provided on the drain pipe 3011. When the valve 3012 is opened, the wastewater that has absorbed waste gas in the filtering box 301 can be discharged through the drain pipe 3011. By removing the filter plate 3042, clean water can be replenished into the filtering box 301 through the exhaust port 304.

[0039] Even further, a sliding groove is opened on the inner wall of the exhaust port 304. A sliding block 3041 is slidably connected in the sliding groove. A filter plate 3042 is fixedly connected to the sliding block 3041. The sliding of the sliding block 3041 facilitates the disassembly and assembly of the filter plate 3042. The gas washed by water can be discharged through the filter plate 3042.

[0040] During use, first rotate the handle 206 to drive the driving gear 205 to rotate. The driving gear 205 drives the engaged driven gear 204 to rotate, and the driven gear 204 drives the screw 203 to rotate, causing the movable block 202 and the sealing door 201 to move upward. The storage rack 103 with metal parts is fixed through the rectangular slot. The storage rack 103 can be inserted into different rectangular slots to adjust the height between the storage racks 103.

[0041] Then rotate the handle 206 in the reverse direction to reverse the rotation of the screw 203, drive the sealing door 201 to move downward to seal the inside of the processing tank 100, and then start the PTC heater 101 to preheat the metal parts inside the processing tank 100 first, which can remove the moisture and oil stains on the surface of the metal parts and improve the bonding force of the nitriding layer. After preheating, ammonia is transported into the cavity through the inlet pipe 102 and enters the processing tank 100 through the ventilation holes to nitride the metal parts on the storage rack 103.

[0042] Finally, start the exhaust fan 303. The exhaust fan 303 extracts the ammonia gas inside the processing tank 100. When the ammonia gas rises from the bottom, it reacts with the metal parts to produce a nitriding reaction, with a wider coverage area and better nitriding effect. The unreacted ammonia gas enters the filtration tank 301 through the transmission pipe 302. The filtration tank 301 is filled with clean water. Ammonia has a certain solubility in water, and the gas after being washed by water is discharged through the filter plate 3042, which can effectively reduce the exhaust gas emissions.

[0043] It should be noted that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, the electrical connection relationship and the specific circuit structure are not described in detail here.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A nitriding treatment device for metal processing, characterized in that: including, a processing box (100) with a PTC heater (101) mounted on the back thereof; a sealing assembly (200) including a sealing door (201), with movable blocks (202) fixedly connected to both sides of the sealing door (201), the movable blocks (202) being slidably connected to an activity groove formed in the inner wall of the processing box (100), a screw rod (203) being mounted on the inner wall of the activity groove, the movable block (202) on one side of the sealing door (201) being threadedly connected to the surface of the screw rod (203), one end of the screw rod (203) being fixedly connected to a driven gear (204), a driving gear (205) being meshed with the surface of the driven gear (204), and a handle (206) being fixedly connected to one end of the driving gear (205); a filtering assembly (300) including a filtering box (301), the filtering box (301) being fixedly connected to one side of the processing box (100), a transmission pipe (302) being fixedly connected to the top of the filtering box (301), one end of the transmission pipe (302) being fixedly connected to the output end of an exhaust fan (303), the exhaust fan (303) being mounted on the inner top wall of the processing box (100), and an exhaust port (304) being further provided on the top of the filtering box (301).

2. The nitriding treatment equipment for metal processing according to claim 1, characterized in that: A cavity is formed in the bottom of the processing box (100), a ventilation hole is formed in the inner top wall of the cavity, and an intake pipe (102) is mounted on the inner side wall of the cavity.

3. The nitriding treatment equipment for metal processing according to claim 1, characterized in that: A rectangular groove is formed in the inner wall of the processing box (100), and a storage rack (103) is slidably connected to the inside of the rectangular groove, and through grooves are formed in the storage rack (103).

4. The nitriding treatment equipment for metal processing according to claim 1, characterized in that: A sleeve hole is formed in the movable block (202) on the other side of the sealing door (201), and a connecting rod (2021) is inserted into the sleeve hole.

5. The nitriding treatment equipment for metal processing according to claim 1, characterized in that: A drain pipe (3011) is fixedly connected to the filtering box (301), and a valve (3012) is provided on the drain pipe (3011).

6. The nitriding treatment equipment for metal processing according to claim 1, characterized in that: A sliding groove is formed in the inner wall of the exhaust port (304), a slider (3041) is slidably connected to the inside of the sliding groove, and a filter plate (3042) is fixedly connected to the slider (3041).

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