Electric porcelain wet blank drying chamber with uniform air inlet

Abstract

The utility model belongs to the technical field of electroceramic drying, and particularly relates to a uniform air inlet electroceramic wet blank drying chamber which comprises a wall body and a top plate located at the top end of the wall body, the wall body and the top plate jointly define an indoor space, an air inlet is formed in the lower portion of the wall body, an air outlet is formed in a roof, and the air outlet and the air inlet are both communicated with the indoor space. An air inlet hole is formed in the rear wall of the air bellow, an air distribution plate is arranged in the air bellow and divides the air bellow into an air exhaust area and an air distribution area, the air exhaust area is communicated with the indoor space, the air distribution area is communicated with the air inlet hole, a plurality of air distribution holes are formed in the air distribution plate, and the air exhaust area and the air distribution area are communicated through the air distribution holes. According to the drying chamber, hot air entering the air bellow is buffered in the air distribution area, the buffered hot air penetrates through the air distribution holes and evenly enters the air exhaust area, the uniformity of the hot air entering the indoor space is enhanced, and heat concentration caused by uneven air inlet is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electrical porcelain drying technology, specifically relating to a drying chamber for wet electrical porcelain blanks with uniform air intake. Background Technology

[0002] In the wet process of producing electrical porcelain, the process typically involves kneading clay, extruding it into cylindrical segments, air-drying the clay segments to a moisture content of 15%–17%, then cutting and shaping them into specific clay blanks. These blanks are then dried and fired to produce electrical porcelain. Current drying methods sometimes employ drying kilns, which not only incur high investment costs and require large floor space, but also make it difficult to control the uniformity of drying.

[0003] Utility model patent CN201715820U discloses a direct-fired drying system for wet ceramic porcelain blanks. This system features an inlet air duct at the bottom and a return air duct at the top of the drying chamber. Outside the drying chamber are a circulating fan, a gas burner, and a combustion-supporting fan connected to the gas burner. The gas burner has a gas pipeline, a combustion-supporting air inlet, and a hot air outlet. The combustion-supporting air inlet connects to the outlet of the combustion-supporting fan, the hot air outlet connects to the inlet of the inlet air duct, and the circulating fan inlet connects to the outlet of the return air duct, with the outlet connected to the inlet of the inlet air duct via a circulating duct. This system uses relatively economical natural gas as an energy source, relying on the gas burner to directly heat the air, and the circulating fan to circulate the hot air, thus drying the ceramic porcelain blanks. While this drying system reduces production costs to some extent, uneven drying can still occur, affecting the subsequent firing quality and even causing cracks in the ceramic porcelain blanks, reducing the yield of finished ceramic porcelain. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a uniform air intake drying chamber for electrical porcelain blanks, which can improve the drying quality of electrical porcelain blanks by relying on the uniformity of air intake.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A uniformly air-intake drying chamber for wet electric porcelain blanks is designed, including a wall and a top plate located at the top of the wall. The wall and the top plate together enclose an indoor space. An air inlet is opened at the lower part of the wall, and an exhaust outlet is opened on the roof. Both the exhaust outlet and the air inlet are connected to the indoor space. The feature is that a wind box is installed in the air inlet, and an air inlet hole is opened on the rear wall of the wind box. An air distribution plate is provided inside the wind box, dividing the wind box into an exhaust zone and an air distribution zone. The exhaust zone is connected to the indoor space, and the air distribution zone is connected to the air inlet hole. The air distribution plate has multiple air distribution holes, which connect the exhaust zone and the air distribution zone.

[0006] Furthermore, the front of the air box is equipped with louvers, and an exhaust area is formed between the louvers and the air distribution plate. The louvers are provided with multiple blades distributed vertically, and the blades are inclined downward from the inside to the outside.

[0007] Furthermore, the number of air inlets is two or more, and the two or more air inlets are evenly distributed along the circumference of the indoor space.

[0008] Furthermore, it also includes a tee, which has a first port, a second port and a third port. The first port is connected to the exhaust port, the second port is connected to the hot gas outlet of the gas burner, and the third port is connected to the air inlet.

[0009] Furthermore, it also includes a controller and a temperature sensor that detects the indoor space temperature. The temperature sensor provides a detection signal to the controller. The gas burner is connected to a gas supply pipe, and an electromagnetic regulating valve is installed on the gas supply pipe. The controller controls the opening degree of the electromagnetic regulating valve according to the detection signal from the temperature sensor.

[0010] Furthermore, it also includes a humidity sensor to detect the humidity of the indoor space. The humidity sensor provides a detection signal to the controller. A dehumidification vent is also provided on the top plate, and an electrically controlled switch valve is installed in the dehumidification vent. The controller controls the opening and closing of the electrically controlled switch valve according to the detection signal of the humidity sensor.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Because a bellows is installed in the air inlet, and an air inlet hole is opened on the rear wall of the bellows, and an air distribution plate is installed inside the bellows, the air distribution plate divides the bellows into an exhaust zone and an air distribution zone. The exhaust zone is connected to the indoor space, and the air distribution zone is connected to the air inlet hole. The air distribution plate has multiple air distribution holes, which connect the exhaust zone and the air distribution zone. This allows the hot air entering the bellows to be buffered in the air distribution zone first. The buffered hot air then passes through the air distribution holes and enters the exhaust zone evenly, enhancing the uniformity of hot air entering the indoor space and reducing heat concentration caused by uneven air intake.

[0013] 2. Because the front of the air box is equipped with louvers, an exhaust zone is formed between the louvers and the air distribution plate. The louvers have multiple blades distributed vertically, and the blades are inclined downwards from the inside to the outside. The blades in the louvers can be used to distribute hot air to the bottom of the indoor space, thereby enhancing the temperature uniformity in the indoor space.

[0014] 3. Because a three-way valve is also installed, the exhaust port, air inlet and hot gas outlet of the gas burner are connected, realizing the recycling of heat and making it more energy-efficient.

[0015] 4. This utility model also includes a controller and a temperature sensor for detecting the indoor space temperature. The temperature sensor provides a detection signal to the controller. The gas burner is connected to a gas supply pipe, and an electromagnetic regulating valve is installed on the gas supply pipe. The controller controls the opening of the electromagnetic regulating valve according to the detection signal from the temperature sensor, thereby realizing the self-regulation of the indoor space temperature and improving the drying quality of the ceramic blank.

[0016] 5. This utility model also includes a humidity sensor for detecting indoor humidity. The humidity sensor provides a detection signal to the controller. A dehumidification port is also provided on the top plate, and an electrically controlled switch valve is installed in the dehumidification port. The controller controls the opening and closing of the electrically controlled switch valve according to the detection signal of the humidity sensor, so as to realize the self-regulation of indoor humidity and further improve the drying quality of the ceramic blank.

[0017] 6. This utility model has an ingenious design. By ensuring uniform air intake, it enhances temperature uniformity and improves the drying quality of ceramic blanks. It is worthy of being promoted and used in the industry. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the pipeline connection structure of this utility model;

[0020] Figure 3 It is a three-dimensional structural diagram of the bellows;

[0021] Figure 4 yes Figure 3 View from direction A;

[0022] Figure 5 yes Figure 4 BB section view;

[0023] Figure 6 yes Figure 5 CC section view;

[0024] Figure 7 This is the control principle diagram of this utility model.

[0025] The following are marked in the diagram: 1. Wall; 2. Ceiling; 3. Interior space; 4. Doorway; 5. Exhaust vent; 6. Air box; 61. Louver; 62. Air inlet; 63. Blade; 64. Air distribution panel; 65. Air distribution hole; 66. Air distribution zone; 67. Exhaust zone; 7. Electrically controlled switch valve; 8. T-junction; 9. Gas burner; 10. Electromagnetic regulating valve; 11. Controller; 12. Temperature sensor; 13. Humidity sensor. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] When this utility model is in working condition, the end away from the ground is defined as the top or upper end, and the other end closer to the ground is defined as the lower end or bottom end; the side of the indoor space 3 closer to the center in the left-right direction is defined as the inner side, and the other side away from the center is defined as the outer side.

[0028] like Figure 1 As shown, this utility model includes walls 1 surrounding the perimeter and a roof panel 2 connected to the top of each wall 1. The walls 1 and roof panel 2 together enclose an interior space 3. A doorway 4, connecting to the interior space 3, is provided on the front wall 1. A door panel (not shown) can be sealed on the doorway 4. An air inlet is provided at the bottom of the wall 1, and an exhaust vent 5 is provided on the roof. Both the exhaust vent 5 and the air inlet connect to the interior space 3. A bellows 6 is installed in the air inlet. Louvers 61 are installed on the front wall of the bellows 6, and air inlets 62 are provided on the rear wall. The louvers 61 have multiple vertically distributed blades 63, which are inclined downwards from the inside to the outside. The blades 63 in the louvers 61 distribute hot air towards the bottom of the interior space 3, enhancing the temperature uniformity within the interior space 3. Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the air box 6 is also equipped with an air distribution plate 64, which divides the air box 6 into an exhaust zone 67 and an air distribution zone 66. The exhaust zone 67 is connected to the louver 61, and the air distribution zone 66 is connected to the air inlet 62. The air distribution plate 64 has multiple air distribution holes 65, which connect the exhaust zone 67 and the air distribution zone 66. This allows the hot air entering the air box 6 to be buffered in the air distribution zone 66 first. The buffered hot air then passes through the air distribution holes 65 and enters the exhaust zone 67 evenly, enhancing the uniformity of the hot air entering the indoor space 3 and reducing the heat concentration caused by the air intake.

[0029] To avoid heat loss from the exhaust gas and achieve thermal circulation, such as... Figure 2 As shown, this utility model also includes a three-way valve 8, which has a first port, a second port, and a third port. The first port is connected to the exhaust port 5, the second port is connected to the hot gas outlet of the gas burner 9, and the third port is connected to the air inlet 62. This allows the gas discharged from the exhaust port 5 to mix with higher temperature gas and then return to the drying chamber, reducing heat loss and making it more energy-efficient and environmentally friendly.

[0030] like Figure 7 As shown, this utility model also includes a controller 11, a temperature sensor 12, and a humidity sensor 13. The temperature sensor 12 detects the temperature signal of the indoor space 3, and the humidity sensor 13 detects the humidity signal of the indoor space 3. Both the temperature sensor 12 and the humidity sensor 13 provide detection signals to the controller 11. A gas supply pipe is connected to the gas burner 9, and an electromagnetic regulating valve 10 is installed on the gas supply pipe. The controller 11 controls the opening of the electromagnetic regulating valve 10 according to the detection signal from the temperature sensor 12. A dehumidification port is also provided on the top plate 2, and an electrically controlled switch valve 7 is installed in the dehumidification port. The controller 11 controls the on / off state of the electrically controlled switch valve 7 according to the detection signal from the humidity sensor 13. In this way, the temperature and humidity in the indoor space 3 are automatically regulated, which is beneficial to improving the drying quality of the ceramic blank.

[0031] The working process of this utility model is as follows:

[0032] The repaired wet porcelain blanks are evenly placed on a trolley, the door is opened, the trolley is pushed into the drying chamber, and the door is closed, so that the wet porcelain blanks are in the enclosed indoor space 3. The gas burner 9 is turned on, and the hot flue gas generated by combustion is sent into the air inlet 62 of each air box 6 through the air duct. The space of the air distribution area is used to buffer the hot air. The buffered hot air passes through the air distribution hole 65 and enters the exhaust area evenly. It enters the lower part of the indoor space 3 through the louver 61, then rises slowly, and finally exits from the exhaust port 5. After being mixed with the high-temperature hot air of combustion, it returns to the indoor space 3. This cycle is repeated, and the indoor space 3 is filled with evenly distributed hot air. The temperature of the hot air is used to dry the wet porcelain blanks.

[0033] During the drying process, the opening of the electromagnetic regulating valve 10 is adjusted in real time according to the temperature of the indoor space 3 to regulate the gas supply, thereby adjusting the combustion power of the gas burner 9 to obtain a suitable indoor temperature. The on / off state of the electronically controlled switch valve 7 is also changed according to the signal from the humidity sensor 13, so that the indoor space 3 can maintain a suitable humidity, improving the drying quality of the porcelain blank.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the scope of the technical solution of this utility model are not permitted.

Claims

1. A uniform air inlet electric porcelain wet body drying chamber, comprising a wall body and a roof located at the top end of the wall body, the wall body and the roof jointly enclosing an indoor space, the lower part of the wall body is provided with an air inlet, the roof is provided with an air outlet, the air outlet and the air inlet are both communicated with the indoor space, characterized in that: The air bellow is installed in the air inlet, the rear wall of the air bellow is provided with an air inlet hole, the air bellow is provided with a wind distribution plate, the wind distribution plate divides the air bellow into an air exhaust area and a wind distribution area, the air exhaust area is communicated with the indoor space, the wind distribution area is communicated with the air inlet hole, the wind distribution plate is provided with a plurality of air distribution holes, and the air distribution holes are communicated with the air exhaust area and the wind distribution area. ​ 2. The uniform air inlet electric porcelain wet-press body drying chamber according to claim 1, characterized in that: The front part of the air bellow is provided with a louver, the louver and the wind distribution plate form the air exhaust area, the louver is provided with a plurality of blades which are distributed upward and downward, and the blades are downwardly inclined from inside to outside.

3. The uniform air inlet electric porcelain wet-press body drying chamber according to claim 2, characterized in that: The number of the air inlets is two or more, and the two or more air inlets are uniformly distributed along the circumference of the indoor space.

4. A uniform air intake electric porcelain wet-press body drying chamber according to any one of claims 1 to 3, characterized in that: The three-way pipe is provided with a first port, a second port and a third port, the first port is connected with the air exhaust port, the second port is connected with the hot gas outlet of the gas burner, and the third port is communicated with the air inlet hole.

5. The uniform air inlet electric porcelain wet-press body drying chamber according to claim 4, characterized in that: The controller and the temperature sensor for detecting the temperature of the indoor space are further provided, the temperature sensor provides a detection signal for the controller, the gas burner is communicated with a gas supply pipe, the gas supply pipe is provided with an electromagnetic regulating valve, and the controller controls the opening degree of the electromagnetic regulating valve according to the detection signal of the temperature sensor.

6. The uniform air inlet electric wet-ceramic green body drying chamber according to claim 5, characterized in that: The humidity sensor for detecting the humidity of the indoor space is further provided, the humidity sensor provides a detection signal for the controller, the top plate is further provided with a dehumidification port, the dehumidification port is provided with an electrically-controlled on-off valve, and the controller controls the on-off of the electrically-controlled on-off valve according to the detection signal of the humidity sensor.

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