Tail gas treatment device of gas nitriding furnace for heat treatment of transmission shaft

Abstract

The utility model discloses a tail gas treatment device of a gas nitriding furnace for heat treatment of a transmission shaft, which relates to the technical field of tail gas treatment and comprises a heating water tank, a spray tower and a gas inlet pipe, the gas inlet pipe penetrates through the heating water tank and is communicated into the spray tower, and gas outlet pipes are fixedly connected to the front outer wall and the rear outer wall of a pipe body, positioned in the spray tower, of the gas inlet pipe. The device comprises a spraying tower, activated carbon and a filter screen are arranged in the spraying tower, the middle of the upper end of the spraying tower is rotationally sleeved with a driving sleeve, and the outer wall of the driving sleeve is fixedly sleeved with a bevel gear I. By arranging the spraying tower, the activated carbon, the filter screen, the driving sleeve, a water inlet connecting pipe, a spraying pipe, a spraying head, the bevel gear I, a bevel gear II and a motor structure, the device is convenient to use. The effect of spraying and continuously treating the waste gas is achieved, and the problem that the treatment efficiency is affected due to the fact that the waste gas is introduced into water for cooling and absorption treatment in the prior art, gas stopping and waste water replacement are needed after each time of purification is conducted for a period of time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft. Background Technique

[0002] A nitriding furnace is a device for processing metal workpieces. During the heat treatment process of a transmission shaft, a nitriding furnace is required, and a large amount of waste gas will be generated during the heat treatment process of the transmission shaft.

[0003] At present, the tail gas treatment of a gas nitriding furnace for the heat treatment of a transmission shaft is generally carried out by introducing it into water for cooling and absorption treatment. Since the water storage capacity in the single-treatment device is limited, after a period of purification, it is necessary to interrupt the gas supply and replace the waste water, which affects the treatment efficiency. Based on this, we propose an improvement to the tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft, which can effectively solve the technical problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft, including a heating water tank, a spray tower and an air inlet pipe. The air inlet pipe passes through the heating water tank and extends into the spray tower. Air outlet pipes are fixedly connected to the front and rear outer walls of the pipe body of the air inlet pipe located in the spray tower. Activated carbon and a filter screen are respectively arranged in the spray tower. A driving sleeve is rotatably sleeved in the middle of the upper end of the spray tower. A first bevel gear is fixedly sleeved on the outer wall of the driving sleeve. A water inlet connecting pipe is rotatably sleeved on the upper end of the driving sleeve. A spray pipe is fixedly connected to the lower end of the driving sleeve. A nozzle is fixedly connected to the lower end of the spray pipe. A motor is fixedly arranged on one side of the upper end of the spray tower. A second bevel gear is fixedly sleeved on the output end of the motor. The first bevel gear and the second bevel gear are meshed.

[0007] As a further solution of the utility model, a steam discharge pipe is fixedly connected to the upper end surface of the heating water tank. A water inlet pipe is fixedly connected to the heating water tank near the upper side. A water outlet pipe is fixedly connected to the heating water tank near the rear side of the lower end surface.

[0008] As a further solution of the utility model, the part of the air inlet pipe located in the heating water tank is distributed in a spiral structure, and the air outlet pipe is located above the activated carbon.

[0009] As a further solution of the utility model, an exhaust pipe is fixedly connected to the other side of the upper end of the spray tower. A drain pipe is fixedly connected to the spray tower near the bottom plate position.

[0010] As a further solution of the present utility model, solenoid valve I is provided on each of the water inlet connecting pipe, the exhaust pipe and the drain pipe, and the filter screen is arranged at the upper end of the air outlet pipe.

[0011] As a further solution of the present utility model, solenoid valve II is rotatably arranged on each of the water inlet pipe, the water outlet pipe and the steam discharge pipe, and support columns are fixedly connected to the lower ends of the heating water tank and the spray tower respectively.

[0012] The beneficial effects of the present utility model are as follows:

[0013] By providing the spray tower, activated carbon, filter screen, drive sleeve, water inlet connecting pipe, spray pipe, spray head, bevel gear I, bevel gear II and motor structure, the effect of spraying waste gas is realized, so that water can be continuously supplied through the water inlet connecting pipe to spray the waste gas, avoiding the situation of gas interruption, and the waste water generated by spraying can be adsorbed by the activated carbon, while the particulate matter in the waste gas can be filtered by the filter screen. At the same time, by using the meshing relationship between bevel gear I and bevel gear II, the motor can drive the drive sleeve to rotate, and then drive the spray pipe to spray and rotate at the same time, improving the spraying range;

[0014] Before spraying the waste gas, it is first introduced into the heating water tank and distributed in a spiral shape to heat the water flow in the heating water tank, achieving the utilization of the heat of the waste gas and reducing the temperature of the waste gas at the same time, which is more environmentally friendly and practical. Description of the Drawings

[0015] Figure 1 It is a schematic external structure diagram of a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft of the present utility model;

[0016] Figure 2 It is a schematic internal structure diagram of a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft of the present utility model;

[0017] Figure 3 It is a schematic rear structure diagram of a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft of the present utility model;

[0018] Figure 4 It is a front view of the internal structure of a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft of the present utility model.

[0019] In the figure: 1. Heating water tank; 2. Spray tower; 3. Air inlet pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Steam discharge pipe; 7. Air outlet pipe; 8. Activated carbon; 9. Filter screen; 10. Drive sleeve; 11. Spray pipe; 12. Spray head; 13. Water inlet connecting pipe; 14. Bevel gear I; 15. Motor; 16. Bevel gear II; 17. Exhaust pipe; 18. Drain pipe. Detailed Embodiment

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] As Figures 1-4 shown, a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft includes a heating water tank 1, a spray tower 2 and an air inlet pipe 3. The air inlet pipe 3 penetrates through the heating water tank 1 and extends into the spray tower 2. Air outlet pipes 7 are fixedly connected to the front and rear outer walls of the pipe body of the air inlet pipe 3 located inside the spray tower 2. Activated carbon 8 and a filter screen 9 are respectively arranged inside the spray tower 2. A driving sleeve 10 is rotatably sleeved in the middle of the upper end of the spray tower 2. A first bevel gear 14 is fixedly sleeved on the outer wall of the driving sleeve 10. A water inlet connecting pipe 13 is rotatably sleeved at the upper end of the driving sleeve 10. A spray pipe 11 is fixedly connected to the lower end of the driving sleeve 10. A spray head 12 is fixedly connected to the lower end of the spray pipe 11. A motor 15 is fixedly arranged on one side of the upper end of the spray tower 2. A second bevel gear 16 is fixedly sleeved on the output end of the motor 15. The first bevel gear 14 and the second bevel gear 16 are meshed.

[0022] In this embodiment, a steam discharge pipe 6 is fixedly connected to the upper end surface of the heating water tank 1. A water inlet pipe 4 is fixedly connected to the upper side close to the heating water tank 1. A water outlet pipe 5 is fixedly connected to the rear side close to the lower end surface of the heating water tank 1.

[0023] In this embodiment, the part of the air inlet pipe 3 located inside the heating water tank 1 is distributed in a spiral structure to increase the pipeline length and improve the heating effect. The air outlet pipe 7 is located above the activated carbon 8, and the activated carbon 8 is placed at the bottom of the spray tower 2.

[0024] In this embodiment, an exhaust pipe 17 is fixedly connected to the other side of the upper end of the spray tower 2 for discharging the treated waste water. A drain pipe 18 is fixedly connected to the spray tower 2 near the bottom plate position for discharging the waste water adsorbed by the activated carbon 8.

[0025] In this embodiment, electromagnetic valves I are arranged on the water inlet connecting pipe 13, the exhaust pipe 17 and the drain pipe 18. The electromagnetic valves I are used to control the opening and closing of the water inlet connecting pipe 13, the exhaust pipe 17 and the drain pipe 18. The filter screen 9 is arranged at the upper end of the air outlet pipe 7.

[0026] In this embodiment, electromagnetic valves II are rotatably arranged on the water inlet pipe 4, the water outlet pipe 5 and the steam discharge pipe 6. The electromagnetic valves II are used to control the opening and closing of the water inlet pipe 4, the water outlet pipe 5 and the steam discharge pipe 6. Support columns are fixedly connected to the lower ends of the heating water tank 1 and the spray tower 2.

[0027] It should be noted that the present utility model is a tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft. During use, the nitriding furnace tail gas spirally passes through the heating water tank 1 through the inlet pipe 3, and cooling water is injected into the heating water tank 1 through the inlet pipe 4. The heat in the tail gas can be used to heat the cooling water, achieving the utilization of heat and at the same time being able to reduce the waste gas temperature conversely. Then the waste gas is introduced into the spray tower 2 and discharged through the outlet pipe 7. At the same time, the motor 15 is started to drive the bevel gear two 16 to rotate, which in turn drives the bevel gear one 14 to rotate, which in turn drives the drive sleeve 10 to rotate, which in turn drives the spray pipe 11 to rotate. At the same time, water is supplied into the drive sleeve 10 through the water inlet connection 13, and the water flow enters the spray pipe 11 and finally sprays out from the nozzle 12 while rotating, increasing the contact area with the waste gas and absorbing and treating the waste gas. At the same time, the falling wastewater enters the activated carbon 8, is adsorbed by the activated carbon 8 and then discharged through the drain pipe 18. The particulate matter in the waste gas is secondarily filtered through the filter screen 9, and then the treated waste gas is discharged through the exhaust pipe 17, which is more environmentally friendly.

[0028] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft, comprising a heating water tank (1), a spray tower (2) and an intake pipe (3), characterized in that: The intake pipe (3) penetrates through the heating water tank (1) and extends into the spray tower (2). The outer walls of the front and rear of the pipe body of the intake pipe (3) located inside the spray tower (2) are fixedly connected with outlet pipes (7). Activated carbon (8) and a filter screen (9) are respectively arranged inside the spray tower (2). A driving sleeve (10) is rotatably sleeved in the middle of the upper end of the spray tower (2). A first bevel gear (14) is fixedly sleeved on the outer wall of the driving sleeve (10). A water inlet connecting pipe (13) is rotatably sleeved at the upper end of the driving sleeve (10). A spray pipe (11) is fixedly connected to the lower end of the driving sleeve (10). A spray head (12) is fixedly connected to the lower end of the spray pipe (11). A motor (15) is fixedly arranged on one side of the upper end of the spray tower (2). A second bevel gear (16) is fixedly sleeved on the output end of the motor (15). The first bevel gear (14) and the second bevel gear (16) are meshed.

2. The tail gas treatment device for the gas nitriding furnace used in the heat treatment of the transmission shaft according to claim 1, wherein: A steam discharge pipe (6) is fixedly connected to the upper end surface of the heating water tank (1). A water inlet pipe (4) is fixedly connected to one side of the heating water tank (1) near the upper end. An outlet pipe (5) is fixedly connected to the rear side near the lower end surface of the heating water tank (1).

3. The tail gas treatment device for the gas nitriding furnace used in the heat treatment of the transmission shaft according to claim 1, wherein: The part of the intake pipe (3) located inside the heating water tank (1) is distributed in a spiral structure. The outlet pipe (7) is located above the activated carbon (8).

4. The tail gas treatment device for a gas nitriding furnace used in the heat treatment of a drive shaft according to claim 1, wherein: An exhaust pipe (17) is fixedly connected to the other side of the upper end of the spray tower (2). A drain pipe (18) is fixedly connected to the spray tower (2) near the bottom plate position.

5. The tail gas treatment device for gas nitriding furnace used in heat treatment of transmission shaft according to claim 4, characterized in that: Solenoid valves I are arranged on the water inlet connecting pipe (13), the exhaust pipe (17) and the drain pipe (18). The filter screen (9) is arranged at the upper end of the outlet pipe (7).

6. The tail gas treatment device for a gas nitriding furnace used in the heat treatment of a transmission shaft according to claim 2, characterized in that: Solenoid valves II are rotatably arranged on the water inlet pipe (4), the outlet pipe (5) and the steam discharge pipe (6). Support columns are fixedly connected to the lower ends of the heating water tank (1) and the spray tower (2).

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