Scraper dryer with heat-conducting oil heating cylinder

Abstract

The utility model relates to the field of dryers, in particular to a scraper dryer with a conduction oil heating cylinder, which comprises a frame, a cylinder assembly and an oil gas inlet and outlet portion, the cylinder assembly is erected in the middle of the frame, the oil gas inlet and outlet portion is arranged on one side of the cylinder assembly, the cylinder assembly comprises an outer cylinder and a heating portion, and the heating portion is arranged on the outer cylinder. According to the scraping plate drying machine with the heat conduction oil heating cylinder, the containing space in the outer cylinder body is reduced, and therefore the use amount of heating oil is reduced. The cost of initially filling the heating oil is reduced, and the energy consumption in the subsequent operation is reduced; the oil gas inlet and outlet part realizes separation of heating oil and oil gas, solves the problem that oil gas in traditional equipment is difficult to collect, and the generated oil gas can be smoothly discharged from the gas outlet pipe without influencing normal circulation of the heating oil, so that the operation process is greatly simplified, and the overall working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of drying machine, specifically related to a heat conduction oil heating cylinder scraper dryer. BACKGROUND

[0002] In the industrial production process, drying is a very important step, especially for chemical, pharmaceutical, food processing and other industries. The traditional drying equipment often uses direct heating method for drying treatment of materials, but this method has certain limitations, such as uneven heating, low efficiency and damage to heat-sensitive materials. In order to overcome these problems, heat conduction oil heating technology is gradually introduced into the drying equipment. By using heat conduction oil as heat carrier, more uniform and efficient heating effect can be achieved.

[0003] In the prior art, the scraper dryer needs to use a large amount of heating oil circulation to heat the cylinder. The amount of heating oil is large. In the process of heating the cylinder with the existing heating oil, a large amount of oil gas is generated. These oil gas can only be discharged through the hot oil circulation system, and the oil gas collection is not convenient. Therefore, how to overcome the above technical problems and defects becomes a key problem to be solved. UTILITY MODEL CONTENT

[0004] The utility model aims to overcome the defects described in the background art, and to realize a heat conduction oil heating cylinder scraper dryer, so as to solve the problems of large amount of heating oil in the prior art, oil gas generated in the process of heating the cylinder with heating oil, only through the hot oil circulation system for discharge, and inconvenient oil gas collection.

[0005] To achieve the above utility model purpose, the technical scheme of the utility model is: a heat conduction oil heating cylinder scraper dryer, comprising a rack, a cylinder assembly and an oil gas inlet and outlet part, the cylinder assembly is arranged in the middle of the rack, and the oil gas inlet and outlet part is arranged on one side of the cylinder assembly.

[0006] Specifically, the cylinder assembly comprises an outer cylinder and a heating part, the outer cylinder is arranged on the rack, and the heating part is arranged inside the outer cylinder.

[0007] At the same time, the oil gas inlet and outlet part comprises an outlet pipe and an oil inlet and outlet path, the outlet pipe is arranged inside the oil inlet and outlet path, one end of the oil inlet and outlet path is connected with an oil inlet and outlet tank, the other end is rotatably connected with the outer cylinder and penetrates the outer cylinder, one end of the outlet pipe communicates with the outside of the oil inlet and outlet path, and the other end penetrates the rear port of the oil inlet and outlet path and is located in the top of the inner cavity of the outer cylinder.

[0008] In the heat conducting oil heating cylinder scraper dryer, the frame comprises a main frame, a support frame and a scraper frame, the support frame is arranged on one side of the main frame, the scraper frame is arranged on the main frame, and a scraper is arranged on the scraper frame.

[0009] Specifically, the cylinder assembly is arranged on the main frame, the oil inlet and outlet part is arranged on the support frame, and the scraper frame is arranged on the main frame on one side of the cylinder assembly.

[0010] In the heat conducting oil heating cylinder scraper dryer, a bearing seat is arranged on the main frame, and the cylinder assembly is arranged on the main frame through the bearing seat.

[0011] A liquid storage tank is further arranged on the main frame below the cylinder assembly.

[0012] In the heat conducting oil heating cylinder scraper dryer, a hollow shaft is arranged on one side of the outer cylinder, and a conductive shaft is arranged on the other side, and the outer cylinder is arranged on the bearing seat of the main frame through the hollow shaft and the conductive shaft.

[0013] Specifically, the hollow shaft is in communication with the inner cavity of the outer cylinder, the conductive shaft is electrically connected with the heating part, the oil inlet and outlet part is arranged on one side of the hollow shaft, the end of the hollow shaft is in communication and connection with the oil inlet and outlet part, and a sprocket for driving the rotation of the outer cylinder is further arranged on the end of the hollow shaft.

[0014] In the heat conducting oil heating cylinder scraper dryer, the heating part comprises an inner cylinder and an electric heating pipe, the inner cylinder is fixedly arranged on the side wall of the inner cavity of the outer cylinder, the electric heating pipe is arranged around and fixedly arranged at the circumference of the inner cylinder, and the electric heating pipe is electrically connected with the conductive shaft.

[0015] Preferably, a heat uniforming sleeve is further arranged on the outer side of the inner cylinder, the heat uniforming sleeve is integrally sleeved on the inner cylinder, one end of the heat uniforming sleeve is fixedly connected with the inner cylinder, and the electric heating pipe is arranged between the inner cylinder and the heat uniforming sleeve.

[0016] Preferably, the inner cylinder is a hollow and closed cylinder, and a temperature sensing probe is further arranged on the outer side of the inner cylinder.

[0017] In the heat conducting oil heating cylinder scraper dryer, the oil inlet and outlet part comprises a three-way joint and a rotary joint, one end of the rotary joint is in communication with the hollow shaft, the other end of the rotary joint is in communication with the outlet end of the three-way joint, and the gas outlet pipe penetrates the three-way joint, the rotary joint and the hollow shaft in sequence.

[0018] Further, the port of the gas outlet pipe in the inner cavity of the outer cylinder is located at the top of the inner cavity of the outer cylinder, and the gas outlet pipe is a hard pipe.

[0019] Preferably, the gas outlet pipe is arranged inside the tee joint through a ring-shaped support, and a ring-shaped support is arranged between the gas outlet pipe and the rotary joint.

[0020] Preferably, the rotary joint is arranged on the support frame through a pipe support.

[0021] Compared with the prior art, the heat conducting oil heating cylinder scraper dryer has at least the following beneficial effects:

[0022] 1. The heat conducting oil heating cylinder scraper dryer of the utility model, by setting the inner cylinder body and the heat uniform sleeve, the containing space inside the outer cylinder body is significantly reduced, thereby the use amount of heating oil is reduced. This design not only reduces the cost of initial filling of heating oil, but also reduces the energy consumption in subsequent operation. In addition, the design of the heat uniform sleeve helps to more evenly distribute the heat generated by the electric heating pipe to the entire heating area, avoiding the problems of local overheating or uneven heating, and further improving the heating efficiency.

[0023] 2. The in-out oil gas part of the utility model realizes the separation of heating oil and oil gas. The gas outlet pipe is located at the top of the inner cavity of the outer cylinder body, ensuring that even in the process of liquid surface fluctuation or equipment operation, heating oil will not flow out of the gas outlet pipe. This design not only solves the problem of difficult collection of oil gas in traditional equipment, but also guarantees the sealing and stability of the system through the combination of the tee joint, the rotary joint and the ring-shaped support. The generated oil gas can be smoothly discharged from the gas outlet pipe without affecting the normal circulation of heating oil, greatly simplifying the operation process and improving the overall working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the three-dimensional structure schematic diagram of the heat conducting oil heating cylinder scraper dryer of the utility model;

[0025] Figure 2 is the installation position three-dimensional schematic diagram of the scraper of the heat conducting oil heating cylinder scraper dryer of the utility model;

[0026] Figure 3 is the sectional structure three-dimensional schematic diagram of the heat conducting oil heating cylinder scraper dryer of the utility model.

[0027] In the drawings:

[0028] 1-Frame:

[0029] 101-main frame, 111-bearing seat, 112-liquid storage tank;

[0030] 102-support frame; 103-scraper frame; 104-scraper;

[0031] 2-cylinder assembly:

[0032] 201-outer cylinder, 211-hollow shaft, 212-conductive shaft, 213-sprocket;

[0033] 202-heating part, 221-inner cylinder, 222-electric heating tube, 223-soaking jacket;

[0034] 3-oil and gas inlet and outlet part:

[0035] 301-gas outlet pipe, 311-ring support;

[0036] 302-oil inlet and outlet, 321-three-way joint, 322-rotary joint, 323-pipe support. DETAILED DESCRIPTION

[0037] The heat conducting oil heating cylinder scraper dryer of the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] Example 1

[0040] The present embodiment discloses a heat conducting oil heating cylinder scraper dryer, which realizes the separation of oil and gas paths by setting an oil and gas inlet and outlet part, and sets an inner cylinder to reduce the internal accommodation space of the outer cylinder, so as to solve the problems in the prior art that the amount of heating oil is large, the oil gas generated during the heating of the cylinder by the heating oil can only be discharged through the heating oil circulation system, and the collection of oil gas is inconvenient. See the following content for details.

[0041] Referring to Figure 1 , Figure 2 , it mainly comprises a rack 1, a cylinder assembly 2 and an oil and gas inlet and outlet part 3, the cylinder assembly 2 is erected in the middle of the rack 1, and the oil and gas inlet and outlet part 3 is arranged on one side of the cylinder assembly 2.

[0042] In this embodiment, the rack 1 is the basic frame of the entire device, which is used to support the cylinder assembly 2 and the oil and gas inlet and outlet part 3. The cylinder assembly 2 is located in the middle of the rack, which is used for heat treatment of the material. The oil and gas inlet and outlet part 3 is responsible for the input and output of heating oil and the output of oil gas.

[0043] In order to realize the support of the cylinder assembly and the oil and gas inlet and outlet part, referring to Figure 1 , Figure 2The rack 1 comprises a main rack 101, a support rack 102 and a scraper rack 103. The support rack 102 is arranged on one side of the main rack 101, and the scraper rack 103 is arranged on the main rack 101. The scraper rack 103 is provided with a scraper 104, and the blade of the scraper 104 abuts against the outer wall of the cylinder assembly 2. The cylinder assembly 2 is arranged on the main rack 101, the oil and gas inlet and outlet part 3 is arranged on the support rack 102, and the scraper rack 103 is arranged on the main rack 101 on one side of the cylinder assembly 2.

[0044] In this embodiment, the main rack 101 is the main support structure. The support rack 102 is arranged on one side of the main rack and is mainly used for mounting and supporting the oil and gas inlet and outlet part 3. The scraper rack 103 is also mounted on the main rack and is located on one side of the cylinder assembly 2. The scraper rack is provided with a scraper 104, and the blade of the scraper abuts against the outer wall of the cylinder assembly 2 and scrapes off the material on the outer wall of the cylinder assembly 2 after heat treatment and drying.

[0045] In order to ensure the support of the cylinder assembly, referring to Figure 1 、 Figure 2 , the main rack 101 is provided with a bearing seat 111, and the cylinder assembly 2 is arranged on the main rack 101 through the bearing seat 111. The main rack 101 below the cylinder assembly 2 is also provided with a liquid storage tank 112.

[0046] In order to support and stably mount the cylinder assembly 2, the cylinder assembly can rotate more stably by using the bearing seat, reduce the friction force, and improve the overall working efficiency and equipment life. The main rack 101 below the cylinder assembly 2 is provided with a liquid storage tank 112. The liquid storage tank is mainly used for picking up the material from the liquid storage tank 112 when the cylinder assembly 2 rolls, and facilitating the distribution of the material to the cylinder assembly 2.

[0047] In order to realize the drying of the material adhered to the outside of the cylinder assembly, referring to Figure 1 、 Figure 3 , the cylinder assembly 2 comprises an outer cylinder 201 and a heating part 202. The outer cylinder 201 is arranged on the rack 1, and the heating part 202 is arranged inside the outer cylinder 201.

[0048] The outer cylinder 201 is supported and mounted by the bearing seat 111 on the rack 1, which can ensure that the outer cylinder can rotate stably. The heating part 202 is arranged inside the outer cylinder, which can perform closed heating on the heating oil inside the outer cylinder 201, which helps to improve the heating efficiency and reduce the heat loss.

[0049] In this embodiment, in order to facilitate the injection of heating oil into the inner part of the outer cylinder 201, and in order to facilitate the power supply to the heating part 202 inside the outer cylinder 201, referring to Figure 3The outer cylinder 201 is provided with a hollow shaft 211 on one side and a conductive shaft 212 on the other side, and the outer cylinder 201 is supported on the bearing seat 111 of the main frame 101 through the hollow shaft 211 and the conductive shaft 212.

[0050] The hollow shaft 211 penetrates the inner cavity of the outer cylinder 201, the conductive shaft 212 is electrically connected with the heating part 202, the oil and gas inlet and outlet part 3 is arranged on one side of the hollow shaft 211, the end of the hollow shaft 211 is in penetrating connection with the oil and gas inlet and outlet part 3, and the end of the hollow shaft 211 is further provided with a sprocket 213 for driving the rotation of the outer cylinder 201.

[0051] The hollow shaft is arranged on one side of the outer cylinder 201, and due to the hollow design inside, oil and gas can be in and out, allowing oil and gas or heated oil to pass through. The conductive shaft is arranged on the other side of the outer cylinder, and is mainly used to provide power for the heating part 202. The electric heating tube (222) needs power to generate heat, and these powers are conducted from the external power source to the heating part through the conductive shaft. This design allows continuous power supply to the heating element even in the case of rotation of the outer cylinder. In this embodiment, a conductive ring is mounted on the conductive shaft, and the conductive ring provides power for the heating part through the rotatable conductive characteristic.

[0052] The sprocket is used to drive the rotation of the outer cylinder 201. The sprocket is connected with the driving device through a chain, and when the driving device works, the chain can drive the sprocket to rotate, thereby driving the rotation of the outer cylinder.

[0053] Referring to Figure 3 The heating part 202 includes an inner cylinder 221 and an electric heating tube 222, the inner cylinder 221 is fixedly arranged on the inner cavity side wall of the outer cylinder 201, the electric heating tube 222 is arranged around and fixedly arranged at the circumference of the inner cylinder 221, and the electric heating tube 222 is electrically connected with the conductive shaft 212.

[0054] The electric heating tube 222 is used to heat the heated oil in the inner cavity of the outer cylinder, so that the heated oil is kept and warmed. The electric heating tube 222 is arranged around the inner cylinder 221, which can fully contact with the heated oil, thereby accelerating the heating speed and improving the heat efficiency.

[0055] In order to realize the separation of the heated oil and the oil and gas, referring to Figure 3 The oil and gas inlet and outlet part 3 includes a gas outlet pipe 301 and an oil inlet and outlet path 302, the gas outlet pipe 301 is arranged in the oil inlet and outlet path 302, one end of the oil inlet and outlet path 302 is connected with an oil inlet and outlet tank, the other end is rotatably connected with the outer cylinder 201 and penetrates the outer cylinder 201, one end of the gas outlet pipe 301 is communicated with the outside of the oil inlet and outlet path 302, and the other end penetrates the rear port of the oil inlet and outlet path 302 and is located in the inner cavity of the outer cylinder 201.

[0056] In this embodiment, one end of the inlet and outlet oil passage 302 is connected to an inlet and outlet oil tank for heating oil to enter or output the device through a pipeline. The other end of the inlet and outlet oil passage is rotatably connected to the outer cylinder (201) and penetrates through it. This rotatable connection design ensures that the inlet and outlet oil passage remains sealed and functions normally even when the outer cylinder is rotating.

[0057] To achieve the rotatable connection and penetration of the inlet and outlet oil passage through the outer cylinder, referring to Figure 3 , the inlet and outlet oil passage 302 includes a tee joint 321 and a rotary joint 322. One end of the rotary joint 322 is connected to the hollow shaft 211, and the other end is connected to the outlet end of the tee joint 321. The gas outlet pipe 301 penetrates through the tee joint 321, the rotary joint 322, and the hollow shaft 211 in sequence.

[0058] In this embodiment, the tee joint 321 is part of the inlet and outlet oil passage and has three interfaces. One interface is used to connect the rotary joint 322, another interface serves as the outlet end for oil and gas, and the last interface is used to connect the inlet and outlet oil tank. One end of the rotary joint 322 is connected to the hollow shaft 211, and the other end is connected to the outlet end of the tee joint 321. The rotary joint allows the internal passage to remain connected while the outside can rotate freely.

[0059] It should be noted that in order to ensure that even if the outer cylinder is rotating or the heating oil level fluctuates, the heating oil will not easily flow out of the gas outlet pipe, in this embodiment, the port of the gas outlet pipe 301 inside the outer cylinder 201 is located at the top of the inner cavity of the outer cylinder 201. When heating oil is injected into the inner cavity of the outer cylinder, the highest injection position of the heating oil should not be higher than the height of the port of the gas outlet pipe 301 inside the outer cylinder 201, which can effectively prevent the heating oil from overflowing through the gas outlet pipe.

[0060] At the same time, in order to ensure the position of the port of the gas outlet pipe 301, the gas outlet pipe 301 is a hard pipe. In order to ensure that the port position of the gas outlet pipe remains unchanged, a hard pipe material is used. The hard pipe can maintain its shape and position and is not easily deformed or displaced during device operation, which is crucial for maintaining the height of the gas outlet pipe port.

[0061] Heating oil enters the tee joint 321, then passes through the rotary joint 322 to the hollow shaft 211, and finally is injected into the inner cavity of the outer cylinder 201. In the opposite direction, oil gas generated during the heating of the heating oil can be extracted from the inner cavity of the outer cylinder through the gas outlet pipe 301, thereby achieving oil and gas separation.

[0062] Embodiment 2

[0063] The same as the above embodiment will not be repeated, the difference is:

[0064] Referring to Figure 3 The inner cylinder 221 is further provided with a heat uniformizing sleeve 223, which is integrally sleeved on the inner cylinder 221, and one end of the heat uniformizing sleeve 223 is fixedly connected to the inner cylinder 221. The electric heating pipe 222 is arranged between the inner cylinder 221 and the heat uniformizing sleeve 223.

[0065] In this embodiment, the inner cylinder provides a mounting base for the electric heating pipe and helps to conduct heat to the inside of the outer cylinder. The heat uniformizing sleeve is integrally sleeved on the inner cylinder 221 and is located between the inner cylinder and the outer cylinder, which can effectively absorb heat from the electric heating pipe and more evenly distribute it to the heating oil in the outer cylinder, avoiding the problem of local overheating or uneven heating.

[0066] Embodiment 3

[0067] The same as the above embodiments and their combinations will not be repeated, and the difference is that:

[0068] The inner cylinder 221 is a hollow and closed cylinder, and the outer side of the inner cylinder 221 is further provided with a temperature sensing probe.

[0069] In this embodiment, the inner cylinder is hollow and closed, which can effectively reduce the overall weight of the inner cylinder and effectively occupy the internal space of the outer cylinder, thereby achieving the effect of reducing weight and reducing the internal space of the outer cylinder, and the injection amount of heating oil can be reduced.

[0070] A temperature sensing probe is arranged on the outer side of the inner cylinder. The temperature sensing probe functions to monitor the temperature change of the heating oil in the outer cylinder in real time and provide accurate data support for the control system.

[0071] Embodiment 4

[0072] The same as the above embodiments and their combinations will not be repeated, and the difference is that:

[0073] Referring to Figure 3 The gas outlet pipe 301 is arranged inside the three-way joint 321 through a ring-shaped support 311, and a ring-shaped support 311 is also arranged between the gas outlet pipe 301 and the rotary joint 322. The rotary joint 322 is arranged on the support frame 102 through a pipe support 323.

[0074] The ring-shaped supports 311 are arranged inside the three-way joint 321 and between the gas outlet pipe 301 and the rotary joint 322, respectively, for fixing and supporting the gas outlet pipe to prevent displacement or vibration of the gas outlet pipe during operation of the equipment. The rotary joint is installed on the support frame 102 through the pipe support 323, which ensures the stability of the rotary joint and good docking with the hollow shaft 211.

[0075] The working principle of the conduction oil heating cylinder scraper dryer is as follows:

[0076] In use, the material needing heat treatment is injected into the liquid storage tank 112, and the heating oil is injected into the inner cylinder body 201 from the inlet and outlet oil tank through the inlet and outlet oil way 302.

[0077] The driving device of the cylinder assembly is started, and the driving device drives the outer cylinder body 201 to rotate, and the outer cylinder body 201 rotates while its outer wall sticks the material from the liquid storage tank 112.

[0078] With the heating process, the oil gas generated rises to the top of the inner cavity of the outer cylinder body 201.

[0079] It should be noted that the structure expressed in the drawings of the present application is not fixed and unchangeable. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. In addition, the drawings and the abstract of the present application are only schematic diagrams and do not represent the specific structure and actual quantity in the specific implementation.

[0080] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art. The use of "one" or "a" and similar words in the specification and claims of the present application does not necessarily mean the limitation of the number. The words such as "include" or "contain" mean that the elements or components before the words cover the elements or components listed after the words and their equivalents, and do not exclude other elements or components. The words such as "connect" or "connected" are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect.

[0081] The exemplary embodiments of the present application are described in detail above with reference to the preferred embodiments, however, those skilled in the art can understand that various modifications and changes can be made to the above specific embodiments without departing from the concept of the present application, and various combinations of the technical features and structures proposed in the present application can be made without exceeding the protection scope of the present application.

Claims

1. A hot oil heating cylinder dryer characterized by: The machine frame, the cylinder assembly and the oil and gas inlet and outlet part, the cylinder assembly is arranged in the middle of the machine frame, and the oil and gas inlet and outlet part is arranged on one side of the cylinder assembly; The cylinder assembly comprises an outer cylinder and a heating part, the outer cylinder is arranged on the machine frame, and the heating part is arranged inside the outer cylinder; The oil and gas inlet and outlet part comprises an air outlet pipe and an oil inlet and outlet path, the air outlet pipe is arranged inside the oil inlet and outlet path, one end of the oil inlet and outlet path is connected with an oil inlet and outlet tank, the other end is rotatably connected with the outer cylinder and penetrates the outer cylinder, one end of the air outlet pipe is communicated with the outside of the oil inlet and outlet path, and the other end penetrates the rear end of the oil inlet and outlet path and is located in the top of the inner cavity of the outer cylinder.

2. The hot oil heating cylinder dryer according to claim 1, characterized in that: The machine frame comprises a main frame, a support frame and a scraper frame, the support frame is arranged on one side of the main frame, the scraper frame is arranged on the main frame, the scraper frame is provided with a scraper, and the blade part of the scraper abuts against the outer wall of the outer cylinder of the cylinder assembly; The cylinder assembly is arranged on the main frame, the oil and gas inlet and outlet part is arranged on the support frame, and the scraper frame is arranged on the main frame on one side of the cylinder assembly.

3. The hot oil heating cylinder dryer according to claim 2, characterized in that: The main frame is provided with a bearing seat, and the cylinder assembly is arranged on the main frame through the bearing seat; The main frame below the cylinder assembly is further provided with a liquid storage tank.

4. The hot oil heating cylinder dryer according to claim 3, characterized in that: One side of the outer cylinder is provided with a hollow shaft, and the other side is provided with a conductive shaft, and the outer cylinder is arranged on the bearing seat of the main frame through the hollow shaft and the conductive shaft; The hollow shaft is penetrated with the inner cavity of the outer cylinder, the conductive shaft is electrically connected with the heating part, the oil and gas inlet and outlet part is arranged on one side of the hollow shaft, the end of the hollow shaft is penetrated and connected with the oil and gas inlet and outlet part, and the end of the hollow shaft is further provided with a sprocket for driving the rotation of the outer cylinder.

5. The hot oil heating cylinder dryer according to claim 4, characterized in that: The heating part comprises an inner cylinder and an electric heating pipe, the inner cylinder is fixedly arranged on the side wall of the inner cavity of the outer cylinder, the electric heating pipe is arranged around and fixedly arranged on the circumference of the inner cylinder, and the electric heating pipe is electrically connected with the conductive shaft.

6. The hot oil heating cylinder dryer according to claim 5, characterized in that: The outer side of the inner cylinder is further provided with a heat equalizing sleeve, the heat equalizing sleeve is integrally sleeved on the inner cylinder, one end of the heat equalizing sleeve is fixedly connected with the inner cylinder, and the electric heating pipe is arranged between the inner cylinder and the heat equalizing sleeve.

7. The hot oil heating cylinder dryer according to claim 5, characterized in that: The inner cylinder is a hollow and closed cylinder, and a temperature sensing probe is further arranged on the outer side of the inner cylinder.

8. The hot oil heating cylinder dryer according to any one of claims 5 to 7, characterized in that: The oil inlet and outlet path comprises a three-way joint and a rotary joint, one end of the rotary joint is connected with the hollow shaft, the other end is connected with the outlet end of the three-way joint, and the air outlet pipe penetrates the three-way joint, the rotary joint and the hollow shaft in sequence; The port of the air outlet pipe in the inner cavity of the outer cylinder is located in the top of the inner cavity of the outer cylinder, and the air outlet pipe is a hard pipe.

9. The hot oil heating cylinder dryer according to claim 8, characterized in that: The air outlet pipe is arranged in the three-way joint through a ring-shaped support, and a ring-shaped support is further arranged between the air outlet pipe and the rotary joint. The rotary joint is arranged on the support frame through a pipeline support.

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