A mesh belt furnace air intake humidifier

Abstract

The utility model discloses a mesh belt furnace air intake humidifier, comprising a barrel body, a barrel cover, a base and an air intake humidification system, wherein the air intake humidification system comprises an air intake pipe and an air flow distribution plate, wherein the air intake pipe is installed below the air intake hole on the barrel cover, the pipe body vertically extends into the barrel to above the heater installation position, the air flow distribution plate is installed at the tail end of the air intake pipe, an air flow distribution cavity is provided in the air flow distribution plate, and air holes that are connected to the air flow distribution cavity are evenly distributed on the upper surface of the air flow distribution plate, and a bubble baffle installation position is provided on the pipe body of the air intake pipe, and a bubble baffle is installed on the pipe body of the air intake pipe based on the bubble baffle installation position, and the outer diameter of the bubble baffle is not less than the maximum outer diameter of the air flow distribution plate. Through the above manner, the utility model can improve the uniformity of the gas humidity after humidification, enhance the stability of the internal atmosphere during sintering of the mesh belt furnace, and improve the stability of product quality.

Description

Technical Field

[0001] The utility model relates to the field of sintering equipment, in particular to an air intake humidifier for a mesh belt furnace. Background Art

[0002] The mesh belt furnace is a commonly used electronic component sintering equipment. During sintering in the existing mesh belt furnace, air directly enters the furnace for heating, and the surface of the product is prone to cracking, resulting in a decrease in the overall qualified rate. In order to improve the above problems, a nitrogen atmosphere mesh belt furnace humidifier is provided in CN 216115431 U. However, when this type of mesh belt furnace humidifier is used, on the one hand, the air inlet is located below the liquid surface, and there will be a problem of backflow when not in use. On the other hand, the gas outlet position is concentrated, which is easy to form large bubbles. In the upward process, in addition to taking away the water in the gas state, liquid particles will also ascend into the kiln along with the bubbles. Since the liquid has an obvious endothermic effect when it is finally gasified, it will cause local temperature disturbances, resulting in unstable sintering quality. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a mesh belt furnace air intake humidifier, which can enhance the uniformity of humidification and improve the final sintering quality of the product.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a mesh belt furnace air intake humidifier, the mesh belt furnace air intake humidifier comprises a barrel body, a barrel cover, a base and an air intake humidification system, a liquid level gauge, a thermocouple, a heater and a water inlet are installed on the side wall of the barrel body, a water outlet is provided at the bottom of the barrel body, an air inlet hole, an air outlet hole and an exhaust hole are provided on the barrel cover, the air intake humidification system is installed in the mesh belt furnace air intake humidifier, the air intake humidification system comprises an air intake pipe and an air flow distribution plate, the air intake pipe is installed Below the air inlet hole installed on the barrel cover, the tube body extends vertically into the barrel to above the installation position of the heater, the air flow distribution plate is installed at the tail end of the air inlet pipe, an air flow distribution cavity is provided in the air flow distribution plate, and air holes that penetrate the air flow distribution cavity are evenly distributed on the upper surface of the air flow distribution plate, a bubble baffle installation position is provided on the tube body of the air inlet pipe, and a bubble baffle is installed on the tube body of the air inlet pipe based on the bubble baffle installation position, and the outer diameter of the bubble baffle is not less than the maximum outer diameter of the air flow distribution plate.

[0005] There are two bubble baffle mounting positions, an upper bubble baffle mounting position and a lower bubble baffle mounting position, and a bubble baffle is mounted on each bubble baffle mounting position. The thermocouple insertion position is between the upper bubble baffle mounting position and the lower bubble baffle mounting position.

[0006] In a preferred embodiment of the utility model, the air inlet is located in the middle of the barrel cover, the air outlet and the exhaust hole are respectively located on both sides of the air inlet, an air inlet pipe joint is installed on the air inlet, an air outlet pipe joint is installed on the air outlet, an air flow control valve is provided on the air outlet pipe joint, a three-way pipe is connected above the exhaust hole, one end of the three-way pipe is connected to a pressure gauge and the other end is connected to a safety valve, a pressure relief valve is also provided between the safety valve and the three-way pipe, and a pre-condensation mechanism is installed below the air outlet and the exhaust hole. The pre-condensation mechanism includes a hanging bracket and a condensation baffle, the hanging bracket is fixed below the barrel cover, and the condensation baffle is installed on the hanging bracket and is located above the liquid surface and between the corresponding functional holes. The distance between the condensation baffle and the barrel bottom of the mesh belt furnace air intake humidifier is not less than two-thirds of the barrel body height.

[0007] In a preferred embodiment of the present invention, the barrel body is wrapped with thermal insulation cotton when in use.

[0008] In a preferred embodiment of the utility model, the air flow distribution plate is in a cross shape as a whole, an air pipe interface connecting the air intake duct and the air flow distribution chamber is arranged at the center of the upper surface of the air flow distribution plate, and the air holes are evenly distributed on the upper surfaces of the four dispersion arms forming the cross shape.

[0009] The beneficial effect of the utility model is as follows: the utility model is a further optimization of the structure of the existing mesh belt furnace air humidifier. On the one hand, the air intake pipe and the air flow distribution plate are combined to intake air from the top to avoid the problem of liquid backflow when not in use. On the other hand, the multiple air holes arranged on the air flow distribution plate will evenly disperse the gas introduced from the air intake pipe before entering the humidifying liquid, thereby avoiding the generation of large bubbles, increasing the content of water molecules in the gas when escaping from the water surface and significantly reducing the generation of droplets. Moreover, the bubble baffle arranged on the air intake pipe can effectively change the passage path of the gas under the liquid surface, thereby increasing the contact time between the gas and the liquid and improving the uniformity of the humidity of the gas after humidification. In this way, the internal atmosphere stability of the mesh belt furnace is better during sintering, significantly reducing the problem of product surface cracking and improving the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall front view structure of a preferred embodiment of the utility model;

[0011] Figure 2 is a schematic diagram of the side structure of the illustrated embodiment;

[0012] Figure 3 is a schematic diagram of the top plan view of the structure of the illustrated embodiment;

[0013] Figure 4 is a schematic diagram of the air intake structure in the illustrated embodiment;

[0014] The markings of the components in the accompanying drawings are as follows:

[0015] 1. Barrel body, 2. Barrel cover, 3. Gasket, 4. Base, 5. Air inlet pipe, 6. Lifting bracket, 7. Condensate baffle, 8. Air flow distribution plate, 9. Bubble baffle, 10. Heater, 11. Liquid level gauge, 12. Thermocouple, 13. Tee pipe, 14. Air inlet pipe joint, 15. Air outlet pipe joint, 16. Pressure gauge, 17. Safety valve, 18. Pressure relief valve;

[0016] 101. Insulation cotton, 102. Water inlet, 103. Water outlet, 104. Heater socket;

[0017] 201. air inlet, 202. air outlet, 203. exhaust hole;

[0018] 501. Lower bubble baffle installation position, 502. Upper bubble baffle installation position;

[0019] 801. Trachea interface, 802. Air hole. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See also Figure 1 and Figure 2 , the utility model embodiment includes:

[0022] A mesh belt furnace air intake humidifier, the mesh belt furnace air intake humidifier comprises a barrel body 1, a barrel cover 2, a base 4 and an air intake humidification system, the barrel body 1 is fixed on the base 4, the barrel cover 2 is tightly covered on the opening of the barrel body 1, a sealing gasket 3 is installed on the opening of the barrel body 1, a liquid level gauge 11, a thermocouple 12, a heater 10 and a water inlet 102 are installed on the side wall of the barrel body 1, a water outlet 103 is provided at the bottom of the barrel body 1, an air inlet hole 201, an air outlet hole 202 and an exhaust hole 203 are provided on the barrel cover 2, the air intake humidification system is installed in the mesh belt furnace air intake humidifier, and the air intake humidification system comprises an air intake pipe 5 and an air flow distribution plate 8,

[0023] The air intake pipe 5 is installed below the air intake hole 201 on the barrel cover 2, and the pipe body extends vertically into the barrel to above the installation position of the heater 10. The air flow distribution plate 8 is installed at the tail end of the air intake pipe 5.

[0024] An air flow distribution cavity is provided in the air flow distribution plate 8, and air holes 802 which penetrate the air flow distribution cavity are evenly distributed on the upper surface of the air flow distribution plate 8. A bubble baffle mounting position is provided on the tube body of the air intake pipe 5, and a bubble baffle 9 is installed on the tube body of the air intake pipe 5 based on the bubble baffle mounting position, and the outer diameter of the bubble baffle 9 is not less than the maximum outer diameter of the air flow distribution plate 8.

[0025] There are two bubble baffle mounting positions, namely, an upper bubble baffle mounting position 502 and a lower bubble baffle mounting position 501, and a bubble baffle 9 is installed on each bubble baffle mounting position. The insertion position of the thermocouple 12 is between the upper bubble baffle mounting position and the lower bubble baffle mounting position. By setting the bubble baffle 9, the bubbles passing through the humidifying liquid can be forced to change the direction of movement, thereby increasing the stroke of bubble escape and effectively improving the mixing of water vapor. The insertion of the thermocouple 12 into the space between the two bubble baffles 9 can separate the direct heating position of the heater 10 and reduce the influence of the convection effect on the temperature control.

[0026] The air inlet 201 is located in the middle of the barrel cover 2, the air outlet 202 and the exhaust hole 203 are respectively located on both sides of the air inlet 201, the air inlet is installed with an air inlet pipe joint 14, the air inlet pipe joint 14 is connected to the air inlet pump through an external pipe, the air outlet 202 is installed with an air outlet pipe joint 15, the air outlet pipe joint 15 is provided with an air flow control valve, the air flow control valve is connected to the pipeline in the mesh belt furnace, the exhaust hole 203 is connected with a tee pipe 13 above, one end of the tee pipe 13 is connected to a pressure gauge 16 and the other end is connected to a safety valve 17, a pressure relief valve 18 is also provided between the safety valve 17 and the tee pipe 13, and a pre-condensation mechanism is installed below the air outlet 202 and the exhaust hole 203. The pre-condensation mechanism includes a hanging bracket 6 and a condensation baffle 7, the hanging bracket 6 is fixed below the barrel cover 2, and the condensation baffle 7 is installed on the hanging bracket 6 and is located above the liquid surface and between the corresponding functional hole. The distance between the condensate baffle 7 and the bottom of the barrel of the mesh belt furnace air intake humidifier is greater than two-thirds of the height of the barrel body 1. The condensate baffle 7 can be set to screen out water droplets with larger particle sizes before the humidified gas leaves the liquid surface and enters the gas outlet or exhaust hole. On the one hand, it prevents large water droplets from entering the furnace, causing local temperature fluctuations that affect the sintering quality of the mesh belt furnace. On the other hand, after the condensate flows back, it reduces water loss in the barrel, reduces the frequency of adding water, and reduces system heat loss. In general, the maximum height of the liquid level when adding water to the humidifying liquid is two-thirds of the barrel height, so the distance between the condensate baffle 7 and the bottom of the barrel must be greater than the set height, otherwise the condensate baffle 7 will fail.

[0027] The barrel body 1 is wrapped with heat-insulating cotton 101 when in use. Wrapping the heat-insulating cotton 101 can reduce the heat loss of the barrel body and reduce the energy consumption during heating.

[0028] The airflow distribution plate 8 is in a cross shape as a whole, and an air pipe interface 801 connecting the air intake pipe 5 and the airflow distribution chamber is arranged at the center of the upper surface of the airflow distribution plate 8, and the air holes 802 are evenly distributed on the upper surfaces of the four dispersion arms forming the cross shape. The purpose of designing the airflow distribution plate 8 in a cross shape is to reduce the obstruction of the airflow distribution plate 8 to the liquid below, so that when the heater 10 is heated, the liquid below can quickly heat the liquid above by convection, thereby effectively improving the heating efficiency without affecting the gas heating process.

[0029] In the above manner, the gas can be heated by the heater 10 during the humidification process to adjust the overall humidification effect, and the contact time between the gas and the liquid is effectively increased through multiple adjustments of the bubble baffle 9 during the gas humidification process, thereby increasing the ratio of water molecules to the gas mixture, and after the gas escapes, the condensation baffle 7 can be used to remove the water droplets that follow the escape, thereby improving the uniformity of the humidified gas. The above structural changes effectively solve the problem of easy cracking during the sintering process of the product, and improve the overall qualified rate.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mesh belt furnace air intake humidifier, comprising a barrel, a barrel cover, a base and an air intake humidification system, a liquid level gauge, a thermocouple, a heater and a water inlet are installed on the side wall of the barrel, a water outlet is provided at the bottom of the barrel, an air inlet hole, an air outlet hole and an exhaust hole are provided on the barrel cover, and the air intake humidification system is installed in the mesh belt furnace air intake humidifier, characterized in that: The air intake humidification system includes an air intake duct and an air flow distribution plate. The air intake duct is installed below the air intake hole on the barrel cover, and the pipe body extends vertically into the barrel to above the installation position of the heater. The air flow distribution plate is installed at the tail end of the air intake duct. An air flow distribution cavity is provided in the air flow distribution plate. The upper surface of the air flow distribution plate is evenly distributed with air holes that pass through the air flow distribution cavity. A bubble baffle installation position is provided on the pipe body of the air intake duct. Relying on the bubble baffle installation position, a bubble baffle is installed on the pipe body of the air intake duct, and the outer diameter of the bubble baffle is not less than the maximum outer diameter of the air flow distribution plate.

2. The mesh belt furnace air inlet humidifier according to claim 1, characterized in that: There are two bubble baffle mounting positions, namely an upper bubble baffle mounting position and a lower bubble baffle mounting position, and a bubble baffle is installed on each bubble baffle mounting position.

3. The mesh belt furnace air inlet humidifier according to claim 2, characterized in that: The thermocouple insertion position is between the upper bubble baffle installation position and the lower bubble baffle installation position.

4. The mesh belt furnace air inlet humidifier according to claim 1, characterized in that: The air inlet is located in the middle of the barrel cover, and the air outlet and the exhaust hole are respectively located on both sides of the air inlet. An air inlet pipe joint is installed on the air inlet, and an air outlet pipe joint is installed on the air outlet. An air flow control valve is provided on the air outlet pipe joint. A three-way pipe is connected above the exhaust hole, one end of the three-way pipe is connected to a pressure gauge and the other end is connected to a safety valve. A pressure relief valve is also provided between the safety valve and the three-way pipe, and a pre-condensation water mechanism is installed below the air outlet and the exhaust hole.

5. The mesh belt furnace air inlet humidifier according to claim 4, characterized in that: The pre-condensation water mechanism comprises a hanging bracket and a condensation water baffle, wherein the hanging bracket is fixed below the barrel cover, and the condensation water baffle is installed on the hanging bracket and is located between the liquid surface and the corresponding functional hole.

6. The mesh belt furnace air inlet humidifier according to claim 5, characterized in that: The distance between the condensation baffle and the bottom of the barrel of the mesh belt furnace air inlet humidifier is not less than two-thirds of the height of the barrel body.

7. The mesh belt furnace air inlet humidifier according to claim 1, characterized in that: The barrel body is wrapped with heat-insulating cotton when in use.

8. The mesh belt furnace inlet humidifier according to claim 1, characterized in that: The air flow distribution plate is in a cross shape as a whole, and an air pipe interface connecting the air intake duct and the air flow distribution cavity is arranged at the center of the upper surface of the air flow distribution plate, and the air holes are evenly distributed on the upper surfaces of the four dispersion arms forming the cross shape.

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