Rotary kiln temperature measuring device for titanium dioxide calcination material

Abstract

The utility model provides a rotary kiln temperature measuring device for titanium dioxide calcination materials, which relates to the technical field of rotary kiln temperature measuring devices for titanium dioxide calcination materials, and comprises a kiln body, a thermocouple is arranged on the kiln body, an installation structure is arranged on the kiln body, and the installation structure mainly comprises a protective sleeve. The protective sleeve is fixedly inserted into the kiln body, two sealing grooves are formed in the inner wall of the protective sleeve, sealing rings are arranged in the sealing grooves, a fixing plate is fixedly connected to the kiln body, a sliding groove is formed in the fixing plate, two sliding blocks are connected into the sliding groove in a sliding mode, a two-way screw rod is rotationally connected into the sliding groove, and the two-way screw rod is fixedly connected to the inner wall of the protective sleeve. According to the utility model, the problems that the thermocouple can be replaced only by cutting in a welding mode, the operation difficulty is large, the kiln body is easy to damage, and the production efficiency is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary kiln temperature measuring device for titanium dioxide calcined material technical field, especially a rotary kiln temperature measuring device for titanium dioxide calcined material. BACKGROUND

[0002] Titanium dioxide is an important white pigment, has the extensive application in numerous industries such as paint, plastic, papermaking, etc., in the production process of titanium dioxide, calcination is a key link, it directly influences the quality and performance of titanium dioxide, rotary kiln is the commonly used equipment of titanium dioxide calcination, and accurate measurement of the temperature of the material in rotary kiln is crucial for controlling the calcination process and ensuring product quality, currently, thermocouple is usually used to measure the temperature of the material in rotary kiln.

[0003] The staff often finds in the process of using the current rotary kiln temperature measuring device for titanium dioxide calcined material that: currently, when installing thermocouple, the thermocouple is usually fixed and inserted on the rotary kiln by welding, due to the importance of thermocouple in industrial production, once failure occurs, such as thermocouple short circuit, insulation damage, etc., it needs to be replaced quickly, and welding needs to be cut to replace the thermocouple, which not only has great operation difficulty but also easily causes damage to the kiln body, resulting in reduced production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a rotary kiln temperature measuring device for titanium dioxide calcined material.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rotary kiln temperature measuring device for titanium dioxide calcined material, including kiln body, the kiln body is provided with thermocouple, the kiln body is provided with mounting structure, the mounting structure is mainly composed of protective sleeve, the protective sleeve is fixed and inserted on the kiln body, two sealing grooves are formed in the inner wall of the protective sleeve, and sealing rings are arranged in the sealing grooves.

[0006] The effects achieved by the above components are that the hot electrode is a core component of the thermocouple, and is in contact with the material in the kiln body, the material is nickel-aluminum alloy, when there is a temperature difference between the hot end and the cold end, a thermoelectric potential difference will be generated at both ends of the hot electrode, that is, the temperature of the material can be measured, in order to ensure the electrical insulation between the two hot electrodes, magnesium oxide powder needs to be filled between the hot electrodes, the protection tube is used to protect the hot electrode and the insulating material of the thermocouple from corrosion, wear, oxidation, mechanical damage and the like of the measured medium, the junction box is located at the cold end part of the thermocouple, and is used to connect the hot electrode of the thermocouple and the external measurement circuit, the material of the protection sleeve is corundum ceramic, the thermocouple is inserted into the protection sleeve, the hot electrode can be quickly installed, the material of the sealing ring is ceramic fiber, after the thermocouple is inserted into the protection sleeve, the two sealing rings are located at both ends of the protection sleeve, the sealing property of the thermocouple connection can be improved, the leakage of the material in the kiln body or the entry of low-temperature gas from the outside can be prevented, and the thermocouple can be replaced by cutting, which not only has a large operation difficulty but also easily causes damage to the kiln body, thereby reducing the production efficiency.

[0007] Preferably, the kiln body is fixedly connected with a fixed plate, and a sliding groove is formed in the fixed plate.

[0008] The effects achieved by the above components are that after the thermocouple is inserted into the protection sleeve, the two sliding blocks are slid to clamp and limit the protection sleeve on the thermocouple, so that the installation is more stable.

[0009] Preferably, a bidirectional screw rod is rotatably connected in the sliding groove, two threads on the bidirectional screw rod are opposite in direction, and one end of the bidirectional screw rod is fixedly connected with a handle.

[0010] The effects achieved by the above components are that the staff can drive the bidirectional screw rod to rotate by rotating the handle, and the two sliding blocks can be synchronously and oppositely slid, so that the operation is more convenient.

[0011] Preferably, a round rod is slidably inserted in the sliding block, one end of the round rod is fixedly connected with a clamping block, a spring is sleeved on the round rod, one end of the spring is fixedly connected to the round rod, and the other end of the spring is fixedly connected to the sliding block.

[0012] The effects achieved by the above components are that as the two sliding blocks gradually approach, the two clamping blocks will first contact the sleeve of the thermocouple, and as the sliding blocks continue to advance, the spring will be gradually stretched, at this time, the elastic force of the spring acts on the clamping block, so that the clamping is more stable, and damage to the thermocouple by the sliding block is prevented.

[0013] Preferably, a plug rod is slidably inserted in the handle, and an insertion slot is formed in one side of the fixed plate.

[0014] The effect achieved by the above-mentioned components is that after clamping, the insertion rod corresponds to the insertion slot, the insertion rod is inserted into the insertion slot, the handle can be limited to prevent the handle from rotating.

[0015] Preferably, the thermocouple is provided with a cooling structure, mainly composed of a cooling jacket, which is sleeved on the cold end of the thermocouple.

[0016] The effect achieved by the above-mentioned components is that the cooling jacket can cool the cold end of the thermocouple, preventing heat from being transferred to the cold end and affecting the temperature measurement result.

[0017] Preferably, the fixed plate is fixedly connected with a cold water tank, the cold water tank is fixedly connected with a water pump, the output end of the water pump is fixedly connected with a water delivery pipe, the water delivery pipe is fixedly communicated with the cooling jacket, the cooling jacket is fixedly communicated with the cold water tank, and a plurality of cooling fins are fixedly inserted on the water delivery pipe.

[0018] The effect achieved by the above-mentioned components is that water is injected into the cold water tank, the water pump is started, the water in the cold water tank is pumped into the cooling jacket to cool the thermocouple, the cooled water falls back into the cold water tank under the action of gravity, and the cycle is repeated to improve the cooling effect, and the plurality of cooling fins can cool the circulating water.

[0019] Preferably, one side of the cold water tank is fixedly embedded with a semiconductor refrigeration piece, and a plurality of cooling grooves are formed in the fixed plate.

[0020] The effect achieved by the above-mentioned components is that one side of the semiconductor refrigeration piece is in contact with the outside air, the other side of the semiconductor refrigeration piece is in contact with the water source in the cold water tank, the semiconductor refrigeration piece is electrified, the side close to the water source absorbs heat, and the side close to the air releases heat, thereby further cooling the water source in the cold water tank.

[0021] Compared with the prior art, the utility model discloses the advantages and positive effect lies in, the utility model discloses a mounting structure is set up, hot electrode is the core component of thermocouple, and the material is nickel aluminium alloy, and when the hot end and cold end exist temperature difference, the thermoelectric potential difference will be produced in the both ends of hot electrode, that is, the temperature of material can be measured, in order to ensure the electrical insulation between two hot electrodes, and the magnesium oxide powder needs to be filled between hot electrodes, the protection tube is used for protecting the hot electrode and insulating material of thermocouple from the corrosion, wear and tear, oxidation and mechanical damage etc. of measured medium, the junction box is located at the cold end part of thermocouple, is used for connecting the hot electrode of thermocouple and external measuring circuit, and the material of protection sleeve is corundum ceramic, and the thermocouple is inserted into protection sleeve, can install the thermocouple quickly, the material of sealing washer is ceramic fiber, after the thermocouple is inserted into protection sleeve, two sealing washers are located at the both ends of protection sleeve respectively, can improve the sealing of thermocouple connection, prevent the material in the kiln body from leaking, or the low-temperature gas of outside enters, thereby avoid the situation that the production efficiency is reduced because the hot electrode is replaced by cutting after welding mode, not only the operation difficulty is larger, and the kiln body is damaged easily, and lead to. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A three-dimensional structure schematic diagram of the rotary kiln temperature measuring device for titanium dioxide calcined material is provided for the utility model;

[0023] Figure 2 Another three-dimensional structure schematic diagram of the rotary kiln temperature measuring device for titanium dioxide calcined material is provided for the utility model;

[0024] Figure 3 A partial schematic diagram of the mounting structure of the rotary kiln temperature measuring device for titanium dioxide calcined material is provided for the utility model;

[0025] Figure 4 A partial schematic diagram of the cooling structure of the rotary kiln temperature measuring device for titanium dioxide calcined material is provided for the utility model.

[0026] Legend: 1, kiln body;2, thermocouple;3, mounting structure;31, protection sleeve;32, sealing groove;33, sealing washer;34, sliding groove;35, sliding block;36, round rod;37, clamping block;38, spring;39, bidirectional screw;310, crank handle;311, insertion rod;312, insertion slot;313, fixed plate;4, cooling structure;41, cooling jacket;42, cold water tank;43, water pump;44, water delivery pipe;45, cooling fin;46, semiconductor refrigeration sheet;47, cooling groove. DETAILED DESCRIPTION

[0027] Example 1, as Figure 1As shown, a rotary kiln temperature measuring device for titanium dioxide calcination material, including kiln body 1, kiln body 1 is provided with thermocouple 2.

[0028] With reference to Figure 2 and Figure 3The installation structure 3 is mainly composed of a protective sleeve 31, the protective sleeve 31 is fixedly inserted on the kiln body 1, two sealing grooves 32 are formed in the inner wall of the protective sleeve 31, and sealing rings 33 are arranged in the sealing grooves 32. The hot electrode is a core component of the thermocouple 2, is in contact with the material in the kiln body 1, and is made of nickel-aluminum alloy. When there is a temperature difference between the hot end and the cold end, a thermoelectric potential difference is generated at the two ends of the hot electrode, and the temperature of the material can be measured. In order to ensure the electrical insulation between the two hot electrodes, magnesium oxide powder needs to be filled between the hot electrodes. The protective tube is used to protect the hot electrode and the insulating material of the thermocouple 2 from corrosion, wear, oxidation and mechanical damage of the measured medium. The junction box is located at the cold end part of the thermocouple 2 and is used to connect the hot electrode of the thermocouple 2 and the external measurement circuit. The material of the protective sleeve 31 is corundum ceramic. The thermocouple 2 is inserted into the protective sleeve 31, and the thermocouple 2 can be quickly installed. The material of the sealing ring 33 is ceramic fiber. After the thermocouple 2 is inserted into the protective sleeve 31, the two sealing rings 33 are located at the two ends of the protective sleeve 31 respectively, which can improve the sealing performance of the thermocouple 2 and prevent the material in the kiln body 1 from leaking or the low-temperature gas from the outside. Therefore, the thermocouple 2 can be replaced by cutting without welding, which not only has a large operation difficulty but also easily damages the kiln body 1, thereby reducing the production efficiency. The kiln body 1 is fixedly connected with a fixed plate 313, the fixed plate 313 is provided with a sliding groove 34, two sliding blocks 35 are slidably connected in the sliding groove 34, and the two sliding blocks 35 are clamped and limited to the protective sleeve of the thermocouple 2 after the thermocouple 2 is inserted into the protective sleeve 31, so that the installation is more stable. A bidirectional screw 39 is rotatably connected in the sliding groove 34, the two threads on the bidirectional screw 39 are opposite in direction, one end of the bidirectional screw 39 is fixedly connected with a crank handle 310, the crank handle 310 is rotated to drive the bidirectional screw 39 to rotate, the two sliding blocks 35 are synchronously and oppositely slid, and the operation is more convenient. A round rod 36 is slidably inserted on the sliding block 35, one end of the round rod 36 is fixedly connected with a clamping block 37, a spring 38 is sleeved on the round rod 36, one end of the spring 38 is fixedly connected to the round rod 36, and the other end of the spring 38 is fixedly connected to the sliding block 35. When the two sliding blocks 35 gradually approach, the two clamping blocks 37 will be in contact with the sleeve of the thermocouple 2 first. With the continuous advancement of the sliding block 35, the spring 38 will be gradually stretched. At this time, the rebounding force of the spring 38 acts on the clamping block 37, so that the clamping is more stable, and the sliding block 35 is prevented from damaging the thermocouple 2. A plug rod 311 is slidably inserted on the crank handle 310, one side of the fixed plate 313 is provided with a plug groove 312, the plug rod 311 is inserted into the plug groove 312 after clamping is completed, and the crank handle 310 is limited, so that the crank handle 310 is prevented from rotating.

[0029] Referring to Figure 3 and Figure 4Cooling structure 4 is arranged on thermocouple 2, cooling structure 4 mainly comprises cooling jacket 41, cooling jacket 41 is sleeved on the cold end of thermocouple 2, cooling jacket 41 can cool the cold end of thermocouple 2, prevent heat from being transmitted to the cold end and affect the temperature measurement result, fixed plate 313 is fixedly connected with cold water tank 42, cold water tank 42 is fixedly connected with water pump 43, the output end of water pump 43 is fixedly connected with water delivery pipe 44, water delivery pipe 44 is fixedly communicated with cooling jacket 41, cooling jacket 41 is fixedly communicated with cold water tank 42, a plurality of radiating fins 45 are fixedly inserted on water delivery pipe 44, water source is injected in cold water tank 42, water pump 43 is started, water pump 43 pumps water source in cold water tank 42 to cooling jacket 41 to cool thermocouple 2, the cooled water falls back into cold water tank 42 under the action of gravity, so circulation is improved, and the cooling effect is improved, and a plurality of radiating fins 45 can cool the flowing water source, one side of cold water tank 42 is fixedly embedded with semiconductor refrigeration fin 46, a plurality of radiating grooves 47 are formed in fixed plate 313, one side of semiconductor refrigeration fin 46 is in contact with outside air, the other side of semiconductor refrigeration fin 46 is in contact with water source in cold water tank 42, semiconductor refrigeration fin 46 is electrified, one side close to water source absorbs heat, one side close to air releases heat, so that water source in cold water tank 42 is further cooled.

[0030] The working principle is that the hot electrode is the core component of the thermocouple 2, which is in contact with the material in the kiln body 1, and the material is a nickel-aluminum alloy. When there is a temperature difference between the hot end and the cold end, a thermoelectric potential difference will be generated at both ends of the hot electrode, that is, the temperature of the material can be measured. In order to ensure the electrical insulation between the two hot electrodes, magnesium oxide powder needs to be filled between the hot electrodes. The protection tube is used to protect the hot electrode and the insulating material of the thermocouple 2 from corrosion, wear, oxidation and mechanical damage of the measured medium. The junction box is located at the cold end of the thermocouple 2, which is used to connect the hot electrode of the thermocouple 2 with the external measurement circuit. The material of the protection sleeve 31 is corundum ceramic. After the thermocouple 2 is inserted into the protection sleeve 31, the two sealing rings 33 are located at both ends of the protection sleeve 31, which can improve the sealing of the connection with the thermocouple 2, prevent the leakage of the material in the kiln body 1, or the entry of low-temperature gas from the outside, thereby avoiding the need for cutting to replace the thermocouple 2 by welding method, which not only has a large operation difficulty but also easily causes damage to the kiln body 1, thereby reducing the production efficiency. After the thermocouple 2 is inserted into the protection sleeve 31, the two sliders 35 are slid to clamp and limit the protection sleeve on the thermocouple 2, so that the installation is more stable. The worker rotates the handle 310 to drive the bidirectional screw 39 to rotate, which can drive the two sliders 35 to slide synchronously and reversely, so that the operation is more convenient. As the two sliders 35 gradually approach, the two clamping blocks 37 will first contact the sleeve of the thermocouple 2. With the continuous advancement of the slider 35, the spring 38 will be gradually stretched. At this time, the rebounding force of the spring 38 acts on the clamping block 37, so that the clamping is more stable, and the damage to the thermocouple 2 by the slider 35 is prevented. When the clamping is completed, the insertion rod 311 corresponds to the insertion slot 312, and the insertion rod 311 is inserted into the insertion slot 312 to limit the handle 310, preventing the handle 310 from rotating. The cooling sleeve 41 can cool the cold end of the thermocouple 2 to prevent heat transfer to the cold end and affect the temperature measurement result. Water is injected into the cooling water tank 42, and the water pump 43 is started to pump the water in the cooling water tank 42 to the cooling sleeve 41 to cool the thermocouple 2. The cooled water falls back into the cooling water tank 42 under the action of gravity, so as to circulate and improve the cooling effect. The semiconductor refrigeration sheet 46 is in contact with the outside air on one side, and in contact with the water source in the cooling water tank 42 on the other side. The semiconductor refrigeration sheet 46 is energized, the side close to the water source absorbs heat, and the side close to the air releases heat, thereby further cooling the water source in the cooling water tank 42.

[0031] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and alteration of the above embodiments without departing from the technical content of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A temperature measuring device for rotary kiln calcination of titanium dioxide material, comprising a kiln body (1), characterized in that: The kiln body (1) is provided with a thermocouple (2), the kiln body (1) is provided with a mounting structure (3), the mounting structure (3) is mainly composed of a protective sleeve (31), the protective sleeve (31) is fixedly inserted on the kiln body (1), two sealing grooves (32) are formed in the inner wall of the protective sleeve (31), and a sealing ring (33) is arranged in the sealing groove (32).

2. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 1, characterized in that: The kiln body (1) is fixedly connected with a fixed plate (313), the fixed plate (313) is provided with a sliding groove (34), and the sliding groove (34) is slidably connected with two sliding blocks (35).

3. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 2, characterized in that: The sliding groove (34) is rotatably connected with a bidirectional screw rod (39), the two threads on the bidirectional screw rod (39) are opposite in direction, and one end of the bidirectional screw rod (39) is fixedly connected with a crank handle (310).

4. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 3, characterized in that: The sliding block (35) is slidably inserted with a round rod (36), one end of the round rod (36) is fixedly connected with a clamping block (37), the round rod (36) is sleeved with a spring (38), one end of the spring (38) is fixedly connected to the round rod (36), and the other end of the spring (38) is fixedly connected to the sliding block (35).

5. The temperature measuring device for titanium dioxide calcination material of a rotary kiln according to claim 4, characterized in that: The crank handle (310) is slidably inserted with a plug rod (311), and one side of the fixed plate (313) is provided with a plug groove (312).

6. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 5, characterized in that: The thermocouple (2) is provided with a cooling structure (4), the cooling structure (4) is mainly composed of a cooling sleeve (41), and the cooling sleeve (41) is slidably sleeved on the cold end of the thermocouple (2).

7. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 6, characterized in that: The fixed plate (313) is fixedly connected with a cold water tank (42), the cold water tank (42) is fixedly connected with a water pump (43), the output end of the water pump (43) is fixedly connected with a water delivery pipe (44), the water delivery pipe (44) is fixedly communicated with the cooling sleeve (41), the cooling sleeve (41) is fixedly communicated with the cold water tank (42), and a plurality of radiating fins (45) are fixedly inserted on the water delivery pipe (44).

8. The temperature measuring device for the rotary kiln of titanium dioxide calcination material according to claim 7, characterized in that: One side of the cold water tank (42) is fixedly embedded with a semiconductor refrigerating fin (46), and a plurality of radiating grooves (47) are formed in the fixed plate (313).

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