Composite drying equipment suitable for quick demolding of ceramic green body

Abstract

The utility model discloses composite drying equipment suitable for quick demoulding of a ceramic body, which comprises a rack, the upper side of the rack is connected with a box body used for drying, the box body is internally provided with a drying cavity with two through ends, the drying cavity is internally provided with a conveyor belt used for conveying workpieces, and the conveyor belt is connected with the rack. A drying cavity is formed in the box body, a combustion device used for heating air is arranged above the box body, the combustion device is connected with a conveying pipe, the conveying pipe is communicated with the drying cavity, the box body is connected with a microwave generator on one side of the combustion device, the microwave generator is close to a feeding port of the drying cavity, and the microwave generator is communicated with the drying cavity; according to the microwave drying device, a blank is rapidly heated at the inlet of the drying cavity through microwaves, heat preservation and continuous moisture volatilization are conveniently conducted on the heated blank through hot air in the follow-up process, the effect of rapidly drying the blank is achieved, air draft and moisture removal are conducted on the bottom of the drying cavity through the air return pipe, and the dehydration speed of the blank can be increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical fields of drying equipment, especially to a composite drying equipment suitable for rapid demolding of ceramic green bodies. BACKGROUND

[0002] Currently, to accelerate the demolding of daily-use ceramic automatic roll-pressing formed bodies, a tunnel type gas heating air is mainly used to blow the bodies, so that the bodies volatilize moisture after being heated, shrink and separate from the plaster molds, achieving the purpose of accelerating the demolding.

[0003] However, in the existing drying equipment, the bodies are heated slowly through tunnel heating, cannot volatilize moisture quickly, and take a long time to dry and demold, and the number of mold turnovers needs to be more than 80 molds, and the drying degree of the green bodies is inconsistent inside and outside. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a composite drying equipment suitable for rapid demolding of ceramic green bodies, solving the problems of slow heating and large number of mold turnovers in the natural gas combustion hot air drying and demolding process of existing daily-use ceramic formed bodies.

[0005] TECHNICAL SCHEME

[0006] The composite drying equipment suitable for rapid demolding of ceramic green bodies comprises a rack, a box body for drying connected to the upper side of the rack, an oven cavity penetrating through both ends arranged in the box body, a conveying belt for conveying workpieces arranged in the oven cavity, a combustion device for heating air arranged above the box body, a conveying pipe connected to the combustion device, the conveying pipe being communicated with the oven cavity, a microwave generator connected to one side of the combustion device, the microwave generator being close to the feeding port of the oven cavity, and the microwave generator being communicated with the oven cavity.

[0007] Preferably, the conveying pipe is connected with a heat preservation air curtain pipeline, the heat preservation air curtain pipeline is communicated with the microwave generator and the oven cavity, and an air curtain valve is arranged at the connection position of the conveying pipe and the heat preservation air curtain pipeline.

[0008] Preferably, a shunt air pipe is arranged below the heat preservation air curtain pipeline, and a conveying air pipe is arranged below the conveying pipe, and the conveying air pipe and the shunt air pipe are both communicated with the oven cavity.

[0009] Preferably, a plurality of air volume adjusting valves are arranged between the conveying pipe and the conveying air pipe.

[0010] Preferably, the combustion device comprises a natural gas combustion device, the natural gas combustion device is fixedly connected with the box body, a circulating fan is connected to the natural gas combustion device, and the circulating fan is communicated with the conveying pipe.

[0011] As preferred, the natural gas combustion device is connected with a return air pipe, the return air pipe extends into the drying cavity, and a waste heat port for connection is arranged on the return air pipe.

[0012] As preferred, the return air pipe is connected with an inner pipeline in the drying cavity, and a plurality of extension pipes are connected with the inner pipeline, and the extension pipes extend below the conveying belt.

[0013] As preferred, the two ends of the box body are respectively connected with sealing gates, and the sealing gates are used for closing the opening of the drying cavity.

[0014] As preferred, a plurality of maintenance openings are arranged on the side wall of the box body.

[0015] Beneficial effects: the embryo is rapidly heated at the entrance of the drying cavity through the microwave, the heated embryo is continuously volatilized by hot air for heat preservation in the subsequent process, the effect of rapid drying of the embryo is achieved, the bottom of the drying cavity is exhausted and dehumidified through the return air pipe, the dehydration speed of the embryo is accelerated, and the use amount of turnover molds is reduced to 30-40. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is the overall structure schematic view of the utility model;

[0017] Fig. 2 is the rear view structure schematic view of the utility model;

[0018] Fig. 3 is the drying cavity bottom view structure schematic view of the utility model;

[0019] Fig. 4 is the top view structure schematic view of the utility model.

[0020] Fig. 10, box body; 20, rack; 30, sealing gate; 40, conveying belt; 41, drying cavity; 50, microwave generator; 60, natural gas combustion device; 70, waste heat port; 80, conveying pipe; 81, conveying frame; 90, return air pipe; 91, inner return air pipeline; 92, extension pipe; 100, heat preservation air curtain pipeline; 101, shunt air pipe; 110, air curtain valve; 120, electrical control cabinet; 130, maintenance opening; 150, electrical cabinet air conditioner; 160, circulating fan; 170, air volume regulating valve. DETAILED DESCRIPTION

[0021] In order to make the technical scheme of the present application clearer, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0022] Embodiment 1

[0023] As Figs. 1 to 4 The composite drying equipment suitable for rapid demolding of ceramic blanks comprises a rack 20, which is the main part of the drying equipment. The upper side of the rack 20 is provided with a box body 10, and the lower side of the rack 20 is provided with an electrical control cabinet 120, which controls the operation of various devices at the box body 10.

[0024] The box body 10 is provided with a drying cavity 41 at the inside. The two ends of the drying cavity 41 penetrate through the box body 10, which is used for placing and taking out the ceramic blanks. The bottom of the drying cavity 41 is provided with a conveying belt 40, which is a chain type rolling conveying belt, used for intermittently conveying the arranged gypsum mold containing blanks from the input end to the output end of the drying cavity 41. The driving motor of the conveying belt 40 is installed below the box body 10 and is controlled and driven by the electrical control cabinet 120.

[0025] The inside of the drying cavity 41 is used for dehydration and drying of the blanks, which requires sealing operation. The two ends of the box body 10 are provided with sealing gates 30. The sealing gates 30 and the box body 10 are both made of double-layer stainless steel, and the middle interlayer is filled with thermal insulation material to prevent temperature conduction loss in the drying cavity 41. Shielding spring leaves are installed around the edges of the sealing gates 30 and tightly contact with the box body 10 to ensure the sealing property of the box body and prevent microwave leakage. The sealing gates 30 are connected with cylinder lifting devices outside the box body 10, which are used for controlling the up and down movement of the sealing gates 30 to realize the sealing and opening of the drying cavity 41.

[0026] The upper end of the box body 10 is provided with a microwave generator 50, which is close to the input end of the conveying belt 40. The specific number of the microwave generator 50 is arranged according to the demand of radiation power. The microwave generator 50 utilizes the penetrating heating characteristics of microwaves to irradiate the blanks below, so that the internal and external temperatures of the blanks can be rapidly increased to about 70-90 degrees, which can quickly warm the blanks and facilitate the subsequent drying work. The shielding spring leaves of the sealing gates 30 can well isolate the radiation leakage, and when the sealing gates 30 move upward, the microwave generator 50 is prohibited from working to prevent causing microwave radiation injury.

[0027] The box 10 is further provided with a combustion device for heating air, which comprises a natural gas combustion device 60 installed on one side of the microwave generator 50, and the natural gas combustion device 60 is fixedly connected with the upper end surface of the box 10. One side of the natural gas combustion device 60 is connected with a conveying pipe 80 for conveying hot air generated by the natural gas combustion device 60. The lower end of the conveying pipe 80 is connected with conveying air pipes 81. The conveying air pipes 81 are provided in parallel and communicate with the drying cavity 41 through the box 10. In operation, the conveying air pipes 81 can convey hot air to keep the drying cavity 41 at a set temperature, so as to promote the evaporation of moisture from the tobacco stems. The lower ends of the conveying air pipes 81 are provided with stainless steel array grids to prevent the escape of microwave from the pipes.

[0028] A plurality of air volume adjusting valves 170 are further arranged between the conveying pipe 80 and the conveying air pipes 81 to control the air volume of the individual conveying air pipes 81 and keep the temperature of the overall environment of the drying cavity 41 constant.

[0029] Further, the conveying pipe 80 is further connected with a heat preservation air curtain pipe 100 which communicates with the microwave generator 50 and the drying cavity 41. A shunt air pipe 101 is arranged below the heat preservation air curtain pipe 100 and between the microwave generator 50 and the sealing gate 30 at the input port. When the sealing gate 30 is opened, the shunt air pipe 101 can prevent the temperature in the tunnel from dropping too quickly. An air curtain valve 110 is arranged between the heat preservation air curtain pipe 100 and the conveying pipe 80 to control the air volume of the heat preservation air curtain pipe 100.

[0030] The natural gas combustion device 60 is further connected with a circulating fan 160 which serves as the power source for conveying hot air. The circulating fan 160 continuously discharges hot air from the conveying pipe 80 and injects new air into the natural gas combustion device 60.

[0031] The natural gas combustion device 60 is further connected with a return air pipe 90 which is further provided with a waste heat inlet 70. When conditions permit, the waste heat inlet 70 can be connected with a kiln waste heat to reduce the use of natural gas and achieve energy-saving effect. The return air pipe 90 is connected with the box 10. The output end of the return air pipe 90 is connected with an inner return air pipe 91 which is arranged in the drying cavity 41. The end of the inner return air pipe 91 is connected with a plurality of extension pipes 92 which extend into the lower part of the conveying belt 40 to perform air extraction and moisture removal for the drying cavity 41, so as to control the ambient temperature in the drying cavity 41.

[0032] A plurality of inspection openings 130 are arranged on the side wall of the box 10. The inspection openings 130 are made of double-layer stainless steel material with a heat preservation interlayer. Micro-switches are arranged on the door frames of the inspection openings 130. When the inspection openings 130 are closed, the micro-switches are disconnected. When the inspection openings 130 are opened, the micro-switches trigger an alarm device and simultaneously disconnect the microwave to stop operation, so as to prevent microwave leakage.

[0033] In the present embodiment, the front sealing gate 30 of the drying equipment is lifted and the microwave generating device 50 is turned off at the same time, the blanks are sent to the conveying belt 40 in a whole row by external mechanism, the gate is lowered, the microwave generating device 50 is turned on according to the set time length, which is determined by the thickness of the blanks; when one beat time is up, the conveying belt 40 will roll forward to transport a certain distance, leaving space for the next time of feeding, when the next beat time is up, the sealing gate 30 is lifted and the microwave is turned off at the same time, and the cycle is repeated, the blanks entering the drying cavity 41 continuously evaporate water at the set temperature and are exhausted by the return air pipeline 90 to exhaust, when the conveying belt is full of molds, the rear sealing gate 30 is lifted or closed at the same time with the front sealing gate 30.

[0034] The above-mentioned embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A composite drying apparatus suitable for rapid demolding of ceramic green bodies, comprising a frame (20), characterized in that: The upper side of the rack (20) is connected with a box (10) for drying, the box (10) is provided with a drying cavity (41) penetrating through two ends, the drying cavity (41) is provided with a conveying belt (40) for conveying workpieces, the upper side of the box (10) is provided with a combustion device for heating air, the combustion device is connected with a delivery pipe (80), the delivery pipe (80) and the drying cavity (41) are communicated, the box (10) is connected with a microwave generator (50) on the side of the combustion device, the microwave generator (50) is close to the feeding port of the drying cavity (41), and the microwave generator (50) and the drying cavity (41) are communicated.

2. A composite drying apparatus suitable for rapid demolding of ceramic green bodies according to claim 1, characterized in that: The delivery pipe (80) is connected with a heat preservation air curtain pipeline (100), the heat preservation air curtain pipeline (100) bypasses the microwave generator (50) and the drying cavity (41) and is communicated, and the connection position of the delivery pipe (80) and the heat preservation air curtain pipeline (100) is provided with an air curtain valve (110).

3. A composite drying apparatus suitable for rapid demolding of ceramic green bodies according to claim 2, characterized in that: The lower side of the heat preservation air curtain pipeline (100) is provided with a shunt air pipe (101), and the lower side of the delivery pipe (80) is provided with a delivery air pipe (81); the delivery air pipe (81) and the shunt air pipe (101) are communicated with the drying cavity (41).

4. A composite drying apparatus suitable for rapid demolding of ceramic green bodies according to claim 3, characterized in that: A plurality of air volume adjusting valves (170) are arranged between the delivery pipe (80) and the delivery air pipe (81).

5. A composite drying apparatus suitable for rapid demolding of ceramic green bodies according to claim 1, characterized in that: The combustion device comprises a natural gas combustion device (60), the natural gas combustion device (60) is fixedly connected with the box (10), and the natural gas combustion device (60) is connected with a circulating fan (160), and the circulating fan (160) is communicated with the delivery pipe (80).

6. A composite drying apparatus suitable for rapid release of ceramic green bodies according to claim 5, wherein: The natural gas combustion device (60) is connected with a return air pipe (90), the return air pipe (90) extends into the drying cavity (41), and the return air pipe (90) is provided with a waste heat port (70) for connection.

7. A composite drying apparatus suitable for rapid release of ceramic green bodies according to claim 6, wherein: The return air pipe (90) is connected with an inner pipeline (91) in the drying cavity (41), the inner pipeline (91) is connected with a plurality of extension pipes (92), and the extension pipes (92) extend into the lower side of the conveying belt (40).

8. A composite drying apparatus suitable for rapid release of ceramic green bodies according to claim 1, characterized in that: The two ends of the box (10) are respectively connected with sealing gates (30), and the sealing gates (30) are used for closing the opening of the drying cavity (41).

9. A composite drying apparatus suitable for rapid release of ceramic green bodies according to claim 1, wherein: A plurality of inspection openings (130) are arranged on the side wall of the box (10).

Images