Kiln structure for enhancing sealing effect of kiln

Abstract

The utility model provides a kiln structure capable of enhancing the sealing effect of a kiln. The kiln structure comprises a feeding hopper, a rotary feeder arranged at the bottom of the feeding hopper, a protective cover arranged on the surface of the rotary feeder, a material cleaning hole formed in the bottom of the protective cover, a rotary drum arranged at one end of the protective cover, and a motor speed reducer arranged in the rotary drum. According to the kiln structure capable of enhancing the sealing effect of the kiln, the two ends of the rotary drum are sealed by matching the rotary drum sealing device with the kiln body sealing device and the protective cover, and the kiln body sealing device is of a pressing type sealing structure combining two packings, an air cavity and a labyrinth type seal. The packing is made of a high-quality graphite fiber packing material, CO2 is introduced into the air cavity to control pressure, the pressure of the air cavity is controlled to be larger than the pressure in the rotary drum, dust overflow and air entry are prevented, the sealing effect is good, therefore, cold air is prevented from entering, flue gas dust is prevented from overflowing out of the rotary drum, and the sealing effect of the rotary drum is improved.

Description

Technical Field

[0001] The utility model relates to the field of kilns, and in particular to a kiln structure capable of enhancing the sealing effect of the kiln. Background Art

[0002] A kiln is a furnace used to fire ceramics and sculptures or to fuse enamel to the surface of metal objects. It is usually made of bricks and stones and can be made into various sizes according to needs. It can be operated by combustible gas, oil or electricity. Electric kilns are easier to control temperature than kilns using combustible gas and oil, but some potters and sculptors believe that the temperature of electric kilns rises too quickly. The temperature inside the kiln is measured with a pyrometer or temperature cone, which can be seen through a peephole.

[0003] The rotary kiln consists of a cylinder, a transmission device, and a support and baffle wheel supporting device, but the kiln head and kiln tail are not sealed, so that cold air enters and smoke and dust overflow from the cylinder when the kiln rotates.

[0004] Therefore, it is necessary to provide a kiln structure that enhances the sealing effect of the kiln to solve the above technical problems. Utility Model Content

[0005] The utility model provides a kiln structure with enhanced kiln sealing effect, solving the problems that the kiln head and the kiln tail are not sealed, cold air enters and smoke and dust overflow the cylinder when the kiln body rotates.

[0006] In order to solve the above technical problems, the utility model provides a kiln structure for enhancing the sealing effect of the kiln, comprising:

[0007] A feeding hopper is provided with a rotary feeder at the bottom of the feeding hopper, a protective cover is provided on the surface of the rotary feeder, a cleaning hole is provided at the bottom of the protective cover, a rotating drum is provided at one end of the protective cover, a motor reducer is provided inside the rotating drum, a smoke exhaust device is provided at the top of the rotating drum, a kiln body seal is provided on the surface of the rotating drum, a roller seal is provided on the surface of the rotating drum, an exhaust pipe is provided at one end of the rotating drum, an observation tube is provided on one side of the rotating drum, and a discharge port is provided at the bottom of the rotating drum.

[0008] Preferably, the rotating drum is designed with a double-layer structure, an inner layer of 304 stainless steel, an outer layer of carbon steel, and an insulation layer in the middle to reduce the external radiation temperature.

[0009] Preferably, a scraper is fixedly connected to the surface of the inner wall of the observation tube, and a fixed sleeve is provided on the surface of the observation tube.

[0010] Preferably, the fixing sleeve is a threaded sleeve, and the surface of the observation tube is provided with threads matching the fixing sleeve.

[0011] Preferably, the interior of the fixing sleeve is rotatably connected to a rotating ring, and a plurality of concave grooves are provided inside the rotating ring.

[0012] Preferably, an observation window is fixedly connected to the interior of the rotating ring, and the observation window is made of glass.

[0013] Preferably, the bottom of the scraper is fixedly connected to the surface of the inner wall of the observation tube, and one side is in contact with one side of the observation window.

[0014] Compared with the related art, the kiln structure provided by the utility model for enhancing the sealing effect of the kiln has the following beneficial effects:

[0015] The utility model provides a kiln structure with enhanced kiln sealing effect. The two ends of the drum are sealed by using a drum sealing device at both ends of the drum in conjunction with a kiln sealing device and a protective cover. The kiln sealing device is a compression sealing structure composed of two packings, an air cavity and a labyrinth seal. The filler is made of high-quality graphite fiber packing material. CO2 is introduced into the air cavity to control the pressure. The pressure of the air cavity is controlled to be greater than the pressure in the drum, so that dust overflow and air entry are prevented. The sealing effect is better, thereby preventing the entry of cold air and the overflow of smoke and dust from the outside of the drum, and increasing the sealing effect of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a first embodiment of a kiln structure for enhancing the sealing effect of a kiln provided by the utility model;

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0018] Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown;

[0019] Figure 4 for Figure 1 An enlarged schematic diagram of part C is shown;

[0020] Figure 5 A schematic structural diagram of a second embodiment of a kiln structure for enhancing the sealing effect of a kiln provided by the utility model;

[0021] Figure 6 for Figure 5 An enlarged schematic diagram of part D is shown.

[0022] Numbers in the figure: 1. Feeding hopper, 2. Screw feeder, 3. Protective cover, 4. Cleaning hole, 5. Rotating drum, 6. Motor reducer, 7. Smoke exhaust device, 8. Kiln body sealing device, 9. Drum sealing device, 10. Exhaust pipe, 11. Observation tube, 12. Discharge port, 13. Scraper, 14. Fixed sleeve, 15. Rotating ring, 16. Observation window, 17. Concave groove. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes. Example

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A structural schematic diagram of a first embodiment of a kiln structure for enhancing the sealing effect of a kiln provided by the utility model; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown; Figure 4 for Figure 1 A kiln structure for enhancing the sealing effect of the kiln, comprising:

[0025] A feeding hopper 1 is provided with a rotary feeder 2 at the bottom of the feeding hopper 1, a protective cover 3 is provided on the surface of the rotary feeder 2, a cleaning hole 4 is provided at the bottom of the protective cover 3, a rotating drum 5 is provided at one end of the protective cover 3, a motor reducer 6 is provided inside the rotating drum 5, a smoke exhaust device 7 is provided at the top of the rotating drum 5, a kiln body seal 8 is provided on the surface of the rotating drum 5, a roller seal 9 is provided on the surface of the rotating drum 5, an exhaust pipe 10 is provided at one end of the rotating drum 5, an observation tube 111 is provided on one side of the rotating drum 5, and a discharge port 12 is provided at the bottom of the rotating drum 5.

[0026] The rotating drum 5 is designed with a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of carbon steel, and an insulation layer in the middle to reduce the external radiation temperature.

[0027] An exhaust pipe 10 is provided at the center of the drum 5, and a thermocouple and a pressure sensor are provided on the exhaust pipe 10.

[0028] The feeding hopper 1 and the screw feeder feed 2, the top of the feeding hopper 1 is closed, and a feeding port flange interface is reserved. The feeding hopper 1 is provided with upper and lower material level alarms, and the feeding amount is variable frequency speed regulation.

[0029] The rotating drum 5 is in direct contact with the material. Considering the material is ultra-light and difficult to flow, the whole kiln is made of a spiral plate structure. There are multiple turning plates welded inside the spiral plate to make the material turn up and down and heat evenly.

[0030] The supporting roller ring at the feeding end is equipped with a stopper wheel structure. The drum 5 expands forward and backward. The length of the supporting roller is designed to take the expansion length into consideration. The temperature of the middle and rear supporting roller rings is relatively high. The supporting roller bearing seat is equipped with a water cooling structure to ensure the safety of high-temperature operation. A protective cover 3 is made outside the transmission gear ring, and a guardrail is made outside the rotating part of the roller ring.

[0031] The drum 5 and the parts in contact with materials and exhaust gas are made of 304 stainless steel, and the other parts are made of carbon steel. The exhaust pipe is equipped with thermocouples and pressure sensors. Considering the high discharge temperature, the drum 5 is designed with a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of carbon steel. An insulation layer is provided in the middle to reduce the external radiation temperature. After the material is discharged, it is connected to the cooler through two high-temperature screw conveyors 2. The kiln body sealing device 8 is a combined compression sealing structure of two packings, air cavity and labyrinth seal. The filler is made of high-quality graphite fiber packing. CO2 is introduced into the air cavity to control the pressure. The air cavity pressure is controlled to be greater than the pressure in the drum to prevent dust from overflowing and air from entering. The sealing effect is good. A plurality of kiln body seals 8 and drum seals 9 are provided on the surface of the drum 5. In actual production, the sealing effect must be guaranteed by the pressure in the drum 5 and regular replacement of the packing.

[0032] Compared with the related art, the kiln structure provided by the utility model for enhancing the sealing effect of the kiln has the following beneficial effects:

[0033] The utility model provides a kiln structure with enhanced kiln sealing effect. The two ends of the drum 5 are sealed by using a drum sealing device 9 to cooperate with a kiln sealing device 8 and a protective cover 3 at both ends of the drum 5. The kiln sealing device 8 is a compression sealing structure composed of two packings, an air cavity and a labyrinth seal. The filler is made of high-quality graphite fiber packing. CO2 is introduced into the air cavity to control the pressure. The pressure of the air cavity is controlled to be greater than the pressure in the drum to prevent dust from overflowing and air from entering. The sealing effect is better, thereby preventing cold air from entering and smoke and dust from overflowing the outside of the drum 5, and increasing the sealing effect of the drum 5.

[0034] Second embodiment

[0035] Please refer to Figure 5 and Figure 6 Based on the kiln structure for enhancing the sealing effect of the kiln provided in the first embodiment of the present application, the second embodiment of the present application proposes another kiln structure for enhancing the sealing effect of the kiln. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0036] Specifically, the second embodiment of the present application provides a kiln structure for enhancing the sealing effect of the kiln, which is different in that, in a kiln structure for enhancing the sealing effect of the kiln, a scraper 13 is fixedly connected to the surface of the inner wall of the observation tube 11, and a fixed sleeve 14 is provided on the surface of the observation tube 11.

[0037] The fixing sleeve 14 is a threaded sleeve, and a thread matching the fixing sleeve 14 is formed on the surface of the observation tube 11 .

[0038] The fixing sleeve 14 is rotated to one side so as to move to one side on the surface of the observation tube 11. After the fixing sleeve 14 moves to one side and separates on the surface of the observation tube 11, it is convenient to remove the fixing sleeve 14 and perform maintenance on the inside of the drum 5.

[0039] A rotating ring 15 is rotatably connected inside the fixing sleeve 14 , and a plurality of concave grooves 17 are formed inside the rotating ring 15 .

[0040] The plurality of concave grooves 17 are used to facilitate the rotation of the rotating ring 15 .

[0041] An observation window 16 is fixedly connected to the interior of the rotating ring 15 , and the observation window 16 is made of glass.

[0042] The bottom of the scraper 13 is fixedly connected to the surface of the inner wall of the observation tube 11 , and one side thereof contacts one side of the observation window 16 .

[0043] The scraper 13 is used to clean one side of the observation window 16 .

[0044] The working principle of a kiln structure for enhancing the sealing effect of the kiln provided by the utility model is as follows:

[0045] When in use, a finger is inserted into the multiple concave grooves 17 and then rotated to one side, thereby driving the observation window 16 to rotate to one side. When the observation window 16 rotates to one side, one side of the scraper 13 moves to one side on the surface of the observation window 16 to scrape off the dust attached to the observation window 16.

[0046] Compared with the related art, the kiln structure provided by the utility model for enhancing the sealing effect of the kiln has the following beneficial effects:

[0047] The utility model provides a kiln structure for enhancing the sealing effect of the kiln, by rotating the rotating ring 15 to one side, so that the observation window 16 rotates to one side, the dust attached to the observation window 16 is scraped off by the scraper 13, so that the inside of the rotating drum 5 can be scraped off conveniently through the observation window 16.

[0048] 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 kiln structure for enhancing the sealing effect of the kiln, characterized in that: include: A feeding hopper is provided with a rotary feeder at the bottom of the feeding hopper, a protective cover is provided on the surface of the rotary feeder, a cleaning hole is provided at the bottom of the protective cover, a rotating drum is provided at one end of the protective cover, a motor reducer is provided inside the rotating drum, a smoke exhaust device is provided at the top of the rotating drum, a kiln body seal is provided on the surface of the rotating drum, a roller seal is provided on the surface of the rotating drum, an exhaust pipe is provided at one end of the rotating drum, an observation tube is provided on one side of the rotating drum, and a discharge port is provided at the bottom of the rotating drum.

2. A kiln structure for enhancing the sealing effect of a kiln according to claim 1, characterized in that: The rotating drum is designed with a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of carbon steel, and an insulation layer in the middle to reduce the external radiation temperature.

3. The kiln structure for enhancing the sealing effect of the kiln according to claim 1, characterized in that: A scraper is fixedly connected to the surface of the inner wall of the observation tube, and a fixed sleeve is arranged on the surface of the observation tube.

4. A kiln structure for enhancing the sealing effect of a kiln according to claim 3, characterized in that: The fixing sleeve is a threaded sleeve, and the surface of the observation tube is provided with threads matching the fixing sleeve.

5. A kiln structure for enhancing the sealing effect of a kiln according to claim 4, characterized in that: The interior of the fixed sleeve is rotatably connected with a rotating ring, and the interior of the rotating ring is provided with a plurality of concave grooves.

6. A kiln structure for enhancing the sealing effect of a kiln according to claim 5, characterized in that: An observation window is fixedly connected to the interior of the rotating ring, and the observation window is made of glass.

7. A kiln structure for enhancing the sealing effect of a kiln according to claim 6, characterized in that: The bottom of the scraper is fixedly connected to the surface of the inner wall of the observation tube, and one side is in contact with one side of the observation window.

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