Automatic salt adding device for QPQ process salt bath

Abstract

The utility model relates to the technical field of salt bath process equipment, and discloses an automatic salt adding device for QPQ process salt bath, which comprises a salt bath furnace, a controller is arranged outside the salt bath furnace, and a blanking mechanism is arranged inside the salt bath furnace. According to the automatic salt adding device for the QPQ process salt bath, through the arrangement of the discharging mechanism, when salt needs to be added into a salt bath furnace, a stop valve is opened, salt liquid flows into a cavity between a first movable rod and a second movable rod through a liquid conveying pipe, a controller is opened, an electromagnetic coil starts to work, and the salt bath furnace is started; the electromagnetic coil generates magnetism to enable the second movable rod and the first movable rod to integrally slide leftwards along the inner wall of the sleeve, salt liquid with the fixed gram weight is driven to the liquid outlet pipe and flows out of the liquid outlet pipe, then the electromagnetic coil stops working, the spring enables the second movable rod and the first movable rod to return to the original position, next-time discharging is facilitated, the discharging mechanism is beneficial for preventing backflow of the salt liquid, and the discharging efficiency is improved. The weight of the salt liquid added each time is uniform and accurate, the workpiece salt bath is sufficient, and the workpiece salt bath quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of salt bath process equipment, in particular to an automatic salt adding device for a QPQ process salt bath. Background Art

[0002] QPQ surface treatment technology changes the structure and properties of the metal surface by quenching and tempering in a nitriding salt bath. During the quenching process, the metal surface is rapidly heated to a high temperature and then rapidly cooled to increase the surface hardness and wear resistance. During the tempering process, the metal surface is heated to a lower temperature again to adjust the structure after quenching and further improve the surface properties. However, during the nitriding salt bath process, an automatic salt adding device for the QPQ process salt bath is required. The automatic salt adding device for the QPQ process salt bath refers to a device that replenishes salt in a regular and quantitative manner during the QPQ nitriding salt bath process.

[0003] The automatic salt adding device for QPQ process salt bath on the market usually puts a part of salt solution before the furnace fire reaches high temperature, and then puts the workpiece that needs to be treated by salt bath. During the salt bath process, salt is added slowly and quantitatively in batches at regular intervals. Although the salt can be added to the special salt bath furnace, when the salt solution is placed inside the salt bath furnace, the high-temperature salt solution is burned by the furnace fire, the gas expands, and gas is blown into the infusion port during the lowering of the salt solution, resulting in uneven and inaccurate weight of the salt solution added each time, affecting the surface treatment effect of the workpiece in the salt bath. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic salt adding device for a QPQ process salt bath, which has the advantages of preventing the backflow of salt solution, ensuring that the weight of the salt solution added each time is uniform and accurate, and making the workpiece in the salt bath fully bathed in the salt bath. The utility model solves the problem that although the salt can be added to a special furnace for a salt bath, when the salt solution is placed inside the special furnace for a salt bath, the fire burns the high-temperature salt solution, causing gas expansion. During the process of lowering the salt solution, the salt solution will be blown back by the expanding gas in the furnace, causing the salt solution to reflux, resulting in uneven and inaccurate weight of the salt solution added each time, thus affecting the surface treatment effect of the workpiece in the salt bath.

[0005] In order to achieve the above-mentioned purpose of preventing the salt solution from flowing back, adding the salt solution uniformly and accurately each time, and making the workpiece in the salt bath fully salted, the utility model provides the following technical solutions: an automatic salt adding device for a QPQ process salt bath, comprising a salt bath furnace, a controller is arranged outside the salt bath furnace, and a material discharge mechanism is arranged inside the salt bath furnace;

[0006] The unloading mechanism includes an infusion tube, a liquid tank, a sleeve, a movable rod 1, a connecting rod, a movable rod 2, an electromagnetic coil, a spring, an installation box and a stop valve. The salt bath furnace is fixedly installed with an infusion tube inside, the liquid tank is fixedly installed on the top of the infusion tube, the sleeve is fixedly installed on the bottom of the liquid tank, the interior of the sleeve is sleeved with movable rod 1, the right side of the movable rod 1 is fixedly installed with a connecting rod, the right side of the connecting rod is fixedly installed with movable rod 2, the outside of the sleeve is sleeved with an electromagnetic coil, the inner left wall of the sleeve is fixedly installed with a spring, the outside of the salt bath furnace is fixedly installed with an installation box, and a stop valve is arranged on the outside of the infusion tube.

[0007] Furthermore, the sleeve is respectively sleeved with movable rod one and movable rod two, the left end of the sleeve is fixedly connected to the inner left wall of the salt bath furnace, and the right end of the sleeve is fixedly connected to the inner right wall of the installation box, so that the sleeve is fixed between the salt bath furnace and the installation box.

[0008] Furthermore, the left end of the spring is fixedly connected to the inner left wall of the sleeve, and the right end of the spring is fixedly connected to the left end of the movable rod 1. The spring can make the movable rod 1 reset due to elastic force after unloading, which is beneficial for the next unloading.

[0009] Furthermore, the infusion tube is connected to the sleeve, so that the saline solution can flow directly into the sleeve through the infusion tube.

[0010] Furthermore, a liquid outlet pipe is fixedly installed at the bottom of the sleeve, and the liquid outlet pipe can drop the salt solution into the salt bath furnace.

[0011] Furthermore, the controller is electrically connected to the electromagnetic coil via a wire, so that the controller can flexibly control the operation of the electromagnetic coil.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The automatic salt adding device for the QPQ process salt bath is provided with a feeding mechanism. When the salt bath furnace needs to add salt, the stop valve is opened to allow the salt solution to flow into the cavity between the movable rod 1 and the movable rod 2 through the infusion tube. The controller is turned on to start the electromagnetic coil to work. The electromagnetic coil generates magnetism to slide the movable rod 2 and the movable rod 1 as a whole along the inner wall of the sleeve to the left. The salt solution of a fixed gram weight is driven to the liquid outlet pipe and flows out from the liquid outlet pipe. Then the electromagnetic coil stops working, and the spring returns the movable rod 2 and the movable rod 1 to their positions for the next feeding. The feeding mechanism is conducive to preventing the salt solution from flowing back. The weight of the salt solution added each time is uniform and accurate. The workpiece in the salt bath is fully bathed in the salt bath, thereby ensuring the quality of the workpiece salt bath. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0015] Figure 2This is a front sectional view of the structure of the utility model;

[0016] Figure 3 It is an enlarged view of structure A of the utility model.

[0017] In the figure: 1. Salt bath furnace; 2. Controller; 3. Feeding mechanism; 301. Infusion tube; 302. Liquid tank; 303. Casing; 304. Movable rod 1; 305. Connecting rod; 306. Movable rod 2; 307. Solenoid; 308. Spring; 309. Installation box; 3010. Stop valve.

[0018] In the figure: DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 In this embodiment, an automatic salt adding device for a QPQ process salt bath includes a salt bath furnace 1, a controller 2 is disposed outside the salt bath furnace 1, and a material discharge mechanism 3 is disposed inside the salt bath furnace 1;

[0021] The unloading mechanism 3 includes an infusion tube 301, a liquid tank 302, a sleeve 303, an active rod 1 304, a connecting rod 305, an active rod 2 306, an electromagnetic coil 307, a spring 308, an installation box 309 and a stop valve 3010. The infusion tube 301 is fixedly installed inside the salt bath furnace 1, the liquid tank 302 is fixedly installed on the top of the infusion tube 301, the sleeve 303 is fixedly installed on the bottom of the liquid tank 302, the active rod 1 304 is sleeved inside the sleeve 303, the connecting rod 305 is fixedly installed on the right side of the active rod 1 304, the active rod 2 306 is fixedly installed on the right side of the connecting rod 305, the electromagnetic coil 307 is sleeved outside the sleeve 303, the spring 308 is fixedly installed on the inner left wall of the sleeve 303, the installation box 309 is fixedly installed outside the salt bath furnace 1, and a stop valve 3010 is arranged outside the infusion tube 301.

[0022] In the case implementation, a liquid infusion tube 301 is fixedly installed inside the salt bath furnace 1, a liquid tank 302 is fixedly installed on the top of the liquid infusion tube 301, a sleeve 303 is fixedly installed on the bottom of the liquid tank 302, a stop valve 3010 is arranged outside the liquid infusion tube 301, and the liquid infusion tube 301 is connected with the sleeve 303, which is conducive to enabling the salt solution to flow from the liquid tank 302 into the salt bath furnace 1 through the stop valve 3010.

[0023] In the case implementation, the interior of the sleeve 303 is sleeved with a movable rod 1 304, a connecting rod 305 is fixedly installed on the right side of the movable rod 1 304, and a movable rod 2 306 is fixedly installed on the right side of the connecting rod 305. Rubber pads are provided on the right side of the movable rod 1 304 and the left side of the movable rod 2 306 to prevent saline from leaking into the sleeve 303. A cavity is formed inside the right side of the movable rod 1 304 and the left side of the movable rod 2 306, which is beneficial for discharging saline in a fixed capacity each time and for uniform gram weight of saline. The sleeve 303 is made of plastic material, which is beneficial for preventing the electromagnetic coil 307 from leaking electricity. The movable rod 2 306 is made of a metal tube, which is beneficial for the electromagnetic coil 307 to generate magnetic force to push the movable rod 2 306 after power is turned on.

[0024] In the case implementation, in the case implementation, the controller 2 and the electronic components in this patent are electrically connected through wires, so that the controller 2 is operated to start each electronic component.

[0025] When implementing, follow these steps:

[0026] 1) First, when salt needs to be added to the salt bath furnace 1, the stop valve 3010 is opened to allow the salt solution to flow through the infusion tube 301 into the cavity between the movable rod 1 304 and the movable rod 2 306 inside the sleeve 303;

[0027] 2) Then, the controller 2 is turned on to start the electromagnetic coil 307 to start working. The electromagnetic coil 307 generates magnetism to make the movable rod 2 306 and the movable rod 1 304 slide to the left along the inner wall of the sleeve 303;

[0028] 3) The saline solution of fixed weight is then driven to the liquid outlet pipe and flows out from the liquid outlet pipe;

[0029] 4) Finally, the electromagnetic coil 307 stops working, and the spring 308 returns the movable rod 2 306 and the movable rod 1 304 to their original positions, closing the stop valve 3010 to facilitate the next unloading.

[0030] In summary, the automatic salt adding device for the QPQ process salt bath is provided with a feeding mechanism 3. When the salt bath furnace 1 needs to add salt, the stop valve 3010 is opened to allow the salt solution to flow into the cavity between the movable rod 1 304 and the movable rod 2 306 through the infusion tube 301, and the controller 2 is turned on to start the electromagnetic coil 307. The electromagnetic coil 307 generates magnetism to make the movable rod 2 306 and the movable rod 1 304 slide to the left along the inner wall of the sleeve 303 as a whole, and the salt solution of a fixed gram weight is driven to the liquid outlet pipe and flows out from the liquid outlet pipe, and then the electromagnetic coil 307 is turned on to start the operation. The ring 307 stops working, and the spring 308 returns the movable rod 2 306 and the movable rod 1 304 to their original positions for the next unloading. This unloading mechanism 3 is beneficial to preventing the salt solution from flowing back. The weight of the salt solution added each time is uniform and accurate, and the workpiece is fully bathed in the salt bath, thereby ensuring the quality of the workpiece salt bath. This solves the problem that when the salt solution is put into the salt bath furnace, the fire burns the high-temperature salt solution, and the gas expands. During the salt solution is lowered, it will be blown back by the expanding gas in the furnace, causing the salt solution to flow back, resulting in uneven and inaccurate weight of the salt solution added each time, thereby affecting the surface treatment effect of the workpiece in the salt bath.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic salt adding device for a QPQ process salt bath, comprising a salt bath furnace (1), characterized in that: A controller (2) is arranged outside the salt bath furnace (1), and a material discharge mechanism (3) is arranged inside the salt bath furnace (1); The unloading mechanism (3) comprises a liquid infusion tube (301), a liquid tank (302), a sleeve (303), a movable rod (304), a connecting rod (305), a movable rod (306), an electromagnetic coil (307), a spring (308), a mounting box (309) and a stop valve (3010). The liquid infusion tube (301) is fixedly installed inside the salt bath furnace (1), the liquid tank (302) is fixedly installed on the top of the liquid infusion tube (301), and the sleeve (303) is fixedly installed on the bottom of the liquid tank (302). The interior of the sleeve (303) is sleeved with a movable rod 1 (304), a connecting rod (305) is fixedly installed on the right side of the movable rod 1 (304), a movable rod 2 (306) is fixedly installed on the right side of the connecting rod (305), an electromagnetic coil (307) is sleeved on the outside of the sleeve (303), a spring (308) is fixedly installed on the inner left wall of the sleeve (303), an installation box (309) is fixedly installed on the outside of the salt bath furnace (1), and a stop valve (3010) is arranged on the outside of the infusion tube (301).

2. The automatic salt adding device for the QPQ process salt bath according to claim 1, characterized in that: The sleeve (303) is respectively sleeved with movable rod 1 (304) and movable rod 2 (306), the left end of the sleeve (303) is fixedly connected to the inner left wall of the salt bath furnace (1), and the right end of the sleeve (303) is fixedly connected to the inner right wall of the installation box (309).

3. The automatic salt adding device for the QPQ process salt bath according to claim 1, characterized in that: The left end of the spring (308) is fixedly connected to the inner left wall of the sleeve (303), and the right end of the spring (308) is fixedly connected to the left end of the movable rod (304).

4. The automatic salt adding device for the QPQ process salt bath according to claim 1, characterized in that: The infusion tube (301) is in communication with the sleeve (303).

5. The automatic salt adding device for the QPQ process salt bath according to claim 1, characterized in that: A liquid outlet pipe is fixedly mounted on the bottom of the sleeve (303).

6. The automatic salt adding device for QPQ process salt bath according to claim 1, characterized in that: The controller (2) is electrically connected to the electromagnetic coil (307) via a wire.

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