Horizontal electric heating dryer

Abstract

The utility model relates to the production technical field of chemical industry environmental protection etc especially relates to a horizontal electric heating drying machine. The drying machine contains transmission system, end seat, casing, stirring shaft, jacket, axle end seal, bearing, filter, frame and support leg, the transmission system contains motor, speed reducer, sprocket and chain, end seat includes drying machine end plate, bearing support structure etc, the casing includes feed inlet, discharge gate, gas outlet, hot nitrogen gas fluidization mouth, manhole etc. The drying machine gas outlet is designed with filter, and the dust carried by the evaporated moisture is filtered, and the filtered dust falls into the drying machine to continue drying, the bolt and frame are connected, and the whole machine can be shipped when shipping, realizing the drying machine shipping pre-assembly, and further ensuring the installation accuracy of equipment.

Description

Technical Field

[0001] This utility model relates to the fields of chemical and environmental protection production technology, and in particular to a horizontal electric heating dryer. Background Technology

[0002] A dryer is a machine that converts liquid or moist materials into dry materials through heating. It is widely used in various industrial fields, such as food, chemical, pharmaceutical, and mining. One of the biggest advantages of dryers is their high efficiency and energy saving. While ensuring the quality of dried products, dryers can achieve precise temperature and humidity control, thereby reducing heat waste. Furthermore, dryers can also achieve efficient resource utilization by recovering waste gas and wastewater.

[0003] Among them, electric heating dryers are widely used in various industries as a high-efficiency and convenient drying equipment, especially in the fields of textiles, food and chemicals.

[0004] First, the electric heating dryer has a highly efficient drying capacity. It uses advanced heating technology to quickly transfer heat energy to the material, thereby achieving rapid drying.

[0005] Compared to traditional drying methods, electrically heated dryers significantly shorten drying time and improve production efficiency. At the same time, their unique drying method preserves the original quality of the materials, preventing deformation or damage caused by high temperatures.

[0006] Secondly, electric heating dryers are energy-saving and environmentally friendly. Using electricity as a heat source, they significantly reduce emissions of carbon dioxide and other harmful gases compared to traditional coal-fired or oil-fired drying equipment, thus contributing to environmental protection.

[0007] In addition, electrically heated dryers are characterized by high thermal efficiency, fully utilizing thermal energy and reducing energy waste. Furthermore, they have a wide range of applications. They are suitable for drying various types of materials, such as textiles, food, and chemical raw materials. Moreover, based on different material characteristics and drying requirements, electrically heated dryers can be customized in design and modification to meet specific user needs.

[0008] Finally, the electrically heated dryer is also safe and reliable. It employs advanced safety protection measures, such as overheat protection and leakage protection, to ensure the safety of the equipment during operation.

[0009] At the same time, its stable performance ensures the reliability of the drying process and avoids production accidents caused by equipment failure.

[0010] On December 1, 2025, using "horizontal and electric heating and dryer" as the abstract keyword and selecting "allow synonym expansion", a search was conducted in the China Patent Publication Database. CN102232172A / B (vertical and horizontal integrated heat exchanger element): No dust filtration and recovery design, easy material waste; transmission system does not have a clear stable transmission structure, resulting in large operation fluctuations; no pre-assembly design, resulting in low installation accuracy.

[0011] CN103274431A (Potassium fluoride reaction apparatus with distillation and drying): Relies on distillation and drying, resulting in low efficiency; lacks optimized arrangement of electric heating elements, leading to high energy consumption; lacks dust treatment, causing environmental pollution.

[0012] CN103497220A / B (Sodium Humate Production Technology): Drying relies on centrifugal spraying + microwave vacuum, resulting in high energy consumption; there is no dust recovery design, leading to a high material loss rate.

[0013] CN104524795A (Horizontal Dryer): The bag filter only filters exhaust gas, and the dust does not fall back; the jacket electric heating is uneven; the transmission system is unstable and prone to failure.

[0014] CN202002452U (Cryogenic Production Device for Chemical Powders): The hot air system uses compressed air heating, without hot nitrogen backflushing, resulting in low purging efficiency; there is no material feeding control structure, leading to unstable material feeding.

[0015] CN203346095U (potassium fluoride device with distillation and drying): Same as CN103274431A, but with low drying efficiency and no dust filtration.

[0016] CN204485335U (Horizontal Dryer): Dust is discharged directly after filtration, resulting in material waste; uneven heating leads to poor drying effect.

[0017] CN205619750U (Hot Air Dryer): Relies on heat exchangers for heating, resulting in high energy consumption; lacks dust recovery design, causing environmental pollution.

[0018] CN208551384U (Baking, Roasting and Drying Machine): The stirring scraper has no dispersing function, and the material is prone to clumping; there is no carrier gas filter, and dust leaks out.

[0019] CN212619858U (Horizontal Dryer): Uneven bottom electric heating; no dust filtration, resulting in material loss; no precise feeding control.

[0020] CN212930676U (Fluidized Bed Dryer): Low precision in material feeding controlled by air guide plate; no agitation blades, preventing material clumping; no dust fallback design.

[0021] CN217876880U (Pellet Feed Dryer): Dust adsorption during air extraction does not fall back down, wasting raw materials; the stirring function lacks a dispersion function, resulting in uneven heating.

[0022] CN220321835U (Calcium Fluoride Raw Material Dryer): Spiral blade agitator without pushing material + dispersing combination; no hot nitrogen purging, low efficiency; poor sealing performance.

[0023] CN223580417U (Vacuum Drying System): The auxiliary electric heating mesh is located in the exhaust pipe, resulting in low heating efficiency; the filter lacks a backflush port, making maintenance inconvenient; and there is no pre-assembled design.

[0024] Common defects of existing technologies: Improper dust handling: Most dust is only separated (discharged or adsorbed) without being recycled, resulting in material waste or environmental pollution.

[0025] Poor heating uniformity: Improper electric heating position (bottom, external) or lack of multiple groups, resulting in localized overheating or undried material and high energy consumption.

[0026] The mixing function is limited: it lacks a combined design of pushing and dispersing materials, which makes the materials prone to clumping and uneven heating.

[0027] Insufficient transmission stability: Mostly couplings, gears, or direct connections, lacking the dual stability structure of chain drive + flange connection, making them prone to failure and requiring frequent replacements.

[0028] Lack of material feeding control: It lacks precise control structures such as flip-plates / insertion plates, has poor adaptability, and cannot meet the needs of different materials.

[0029] Weak sealing performance: The sealing method is simple (flat seal, ordinary gasket), which makes it prone to leakage and unsuitable for toxic or easily contaminated materials.

[0030] Installation and maintenance are complex: there is no pre-assembled design, resulting in low on-site installation accuracy; the filtration, heating and other structures lack modular design, making maintenance inconvenient.

[0031] On December 1, 2025, an abstract search was conducted on CNKI (China National Knowledge Infrastructure) for the term "horizontal and electric heating and dryer". The results included: "Mechanical drying technology for hybrid rice seeds" published on April 10, 2021; "Integration of key process technologies and equipment development for the entire craft beer brewing process" published on May 19, 2020; and "Continuous vacuum extract dryer" published on August 20, 2006.

[0032] The solution provided by US 2756554 A has a structure and function similar to a combine harvester, and is specially designed: through the synergistic effect of appropriately combined structural adapters, the machine can be driven into the field with the help of tractors or other equipment; it accurately harvests hay and other crops when they reach the appropriate harvesting period and transports them to a portable dryer; during transportation, the hay is pre-treated to make it suitable for subsequent storage. The dryer has a discharge structure at the rear or back end, and the dried hay can be poured into an agricultural trailer or baler connected to the dryer; after the trailer is loaded, it can be detached and transported to a silage pit or barn as needed.

[0033] It is completely different from the concept of this patent. Utility Model Content

[0034] The purpose of this utility model is to provide a horizontal electric heating dryer with better performance. The specific purpose is explained in the specific implementation section for several substantial technical effects.

[0035] To achieve the above objectives, the present invention adopts the following technical solution: A horizontal electric heating dryer, characterized in that, The dryer includes a transmission system 1, end seat 2, shell 3, stirring shaft 4, jacket 5, shaft end seal 6, bearing 7, filter 8, frame 9, and support legs 10; The transmission system 1 includes a motor, a reducer, large and small sprockets and a chain; the motor and reducer constitute the power output part, which can transmit power to the stirring shaft 4 for rotation through the sprocket transmission structure; End seat 2 includes dryer end plate and bearing support structure; stirring shaft 4 passes through dryer end plate and bearing support structure and extends into housing 3; The shell 3 includes an inlet 11, an outlet 14, a carrier gas outlet, a hot nitrogen gasification port 13, and a manhole 12; the shell 3 contains an inner shell, and end flanges are arranged on the sides of the shell 3. The dryer's carrier gas outlet is equipped with a filter 8, which can filter the dust carried by the evaporated water, and the filtered dust can fall into the dryer for further drying. The stirring shaft 4 includes a shaft body and blades. The material can be heated evenly through continuous stirring by the blades. An electric heating element is installed inside the jacket 5, which is the main heating component of the dryer; The support leg 10 is welded to the dryer housing and connected to the frame by bolts.

[0036] A further technical solution of this utility model is that a jacket 5 is formed between the shell 3 and the inner shell. The jacket 5 includes an inner wall 501, an electric heating element 502, an electrical junction box 503, and a partition 504. The electric heating element 502 is the main heating component of the dryer. Multiple sets of electric heating elements 502 are arranged along the circumference of the dryer to improve the drying effect of the dryer. The electric heating elements are arranged in a single parallel manner. A partition 504 is provided on both sides of the jacket. A junction box is led out from the partition 504. The wiring of each electric heating element is arranged in parallel in the junction box.

[0037] A further technical solution of this utility model is that the stirring shaft 4 includes a pushing blade 401, a shaft tube 402, a dispersing blade 403, and a shaft head 404; the pushing blade 401 can push the material forward as the stirring shaft rotates; the shaft tube 402 is provided with pushing blades and dispersing blades; the dispersing blade 403 is provided with 2-3 dispersing rakes, which can more effectively disperse the material as the shaft rotates; the shaft head 404 is provided at both ends of the shaft tube, and the stirring shaft includes one shaft tube and two shaft heads.

[0038] A further technical solution of this utility model is that the hot nitrogen gas flow port is located at the bottom of the shell, which can introduce hot nitrogen gas. The hot nitrogen gas can enter the dryer through the back-blowing screen, thereby increasing the purging area and further improving the hot nitrogen purging efficiency.

[0039] A further technical solution of this utility model is that a gas phase outlet 801 and a pressure gauge port 802 are arranged on the upper part of the filter housing, a backflush port 803 is arranged on the side of the filter housing, and a filter element fixing structure 806 is arranged inside the filter housing. The backflush port 803 can backflush the polyester cloth pleated filter element 807, and the polyester cloth pleated filter element 807 is fixed on the filter element fixing structure 806. A tail gas safety discharge port 804 is arranged on the side of the filter housing, and a spare port 805 is arranged at the bottom of the filter housing.

[0040] A further technical solution of this utility model is that the discharge port is located below the shell, and the discharge port is provided with a feeding structure of flap or insert plate, which can control the feeding time and speed of the equipment.

[0041] A further technical solution of this utility model is that the end seat 2 includes an end plate and a bearing support structure, and each end flange at both ends of the housing is equipped with an end seat. The seal between the end plate and the housing is a tenon and groove seal, and the sealing ring material is fluororubber.

[0042] A further technical solution of this utility model is that the support legs are welded to the dryer housing and connected to the frame by bolts.

[0043] A further technical solution of this utility model is that the electric heating element is close to the outer wall of the shell and is evenly distributed within the circumference of the outer wall of the shell, which can increase the heat radiation range; the electric heating element is wrapped with a jacket on the outside, so that the electric heating element does not directly contact the air, which can reduce heat waste and save energy.

[0044] A further technical solution of this utility model is that the shaft end seal of the electric heating dryer is a two-stage combined rotary shaft seal device.

[0045] A further technical solution of this utility model is that the shell of the electric heating dryer adopts a circular structure; the discharge port flange can be a flange flange, which is directly welded to the inner wall of the shell, which can reduce the length of the pipe required by using ordinary flanges; the flange flange is directly connected to the downstream valve, which can prevent material blockage.

[0046] The present invention, employing the above technical solution, offers the following advantages over existing technologies: the horizontal electric heating dryer is characterized by high efficiency, energy saving and environmental friendliness, ease of operation and maintenance, wide application, and safety and reliability. These characteristics have led to the widespread application and recognition of electric heating dryers in various fields. With continuous technological advancements and market development, electric heating dryers will continue to leverage their advantages, providing more efficient and environmentally friendly solutions for production and development across various industries.

[0047] High adaptability and operability: The hot nitrogen backflushing screen and flip / insert plate feeding structure are suitable for various materials such as granules, powders, and slurries, and the feeding speed can be precisely controlled. High sealing and environmental friendliness: The tongue and groove surface and fluororubber sealing design result in a near-zero leakage rate. Combined with dust fall-off, it fully meets environmental protection requirements and is suitable for toxic and easily contaminated materials. Convenient and efficient installation and maintenance: The pre-assembled design reduces installation errors. Multiple filter interfaces and modular design of the stirring shaft improve maintenance efficiency and reduce installation costs. Attached Figure Description

[0048] To further illustrate this utility model, the following description is provided in conjunction with the accompanying drawings: Figure 1 This is an overall structural diagram of a horizontal electric heating dryer according to the present invention; Figure 2 This is a structural diagram of the jacket of this utility model; Figure 3 This is a structural diagram of the stirring shaft of this utility model; Figure 4 This is a structural diagram of the filter of this utility model; Figure 5 This is a structural diagram of the filter element inside the utility model. In the diagram, 1 is the transmission system, 2 is the end seat, 3 is the housing, 4 is the stirring shaft, 5 is the jacket, 6 is the shaft end seal, 7 is the bearing, 8 is the filter, 9 is the frame, 10 is the support leg; 11 is the feed inlet; 12 is the manhole; 13 is the hot nitrogen gasification port; 14 is the discharge port; 15 is the spare port; 801 is the gas phase outlet; 802 is the pressure gauge port; 803 is the backflush port; 804 is the exhaust gas safety discharge port; 805 is the spare port; 806 is the filter element fixing structure; 807 is the polyester cloth pleated filter element. Detailed Implementation

[0049] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] This patent provides multiple parallel solutions; the different descriptions represent improved or parallel solutions based on a basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0052] This utility model is implemented as follows: a horizontal electric heating dryer includes a transmission system, an end seat, a shell, a stirring shaft, a jacket, a shaft end seal, bearings, a filter, a frame, and support legs. The transmission system includes a motor, a reducer, large and small sprockets, and a chain. The end seat includes a dryer end plate, a bearing support structure, etc. The shell includes a feed inlet, a discharge outlet, a carrier gas outlet, a hot nitrogen gasification inlet, a manhole, and other pipe openings, as well as an inner shell and end flanges. The carrier gas outlet of the dryer is designed with a filter to filter the dust carried by the evaporated moisture, and the filtered dust falls into the dryer for further drying. The stirring shaft includes a shaft body and blades, and the material is heated evenly through continuous stirring by the blades. An electric heating element is installed in the jacket, which is the main heating component of the dryer. The support legs are welded to the dryer shell and connected to the frame by bolts. The dryer can be shipped as a complete unit, realizing pre-assembly at the factory and further ensuring the installation accuracy of the equipment.

[0053] The dryer's carrier air outlet is equipped with a filter 8 to filter the dust carried by the evaporated moisture. The filtered dust falls into the dryer for further drying. The housing 3 includes a feed inlet, a discharge outlet, a carrier gas outlet, a hot nitrogen gasification inlet, a manhole, and other pipe openings, as well as an inner shell and end flanges. Hot nitrogen gas is introduced into the hot nitrogen gasification inlet, and the hot nitrogen gas enters the dryer through a backflushing screen, which can increase the purging area and improve the hot nitrogen purging efficiency. The discharge outlet can be equipped with a feeding structure with a flap or insert plate to control the feeding time and speed of the equipment.

[0054] The dryer's carrier gas outlet is designed with a filter 8 to filter the dust carried by the evaporated moisture. The filtered dust falls into the dryer for further drying. The filter's gas phase inlet is the dryer's carrier gas outlet. The filter also includes a gas phase outlet, a backflush port, a tail gas safety discharge port, a pressure gauge port, and a temperature measuring port.

[0055] The jacket 1 includes an inner wall 501, an electric heating element 502, an electrical junction box 503, and a partition 504. The electric heating element is the main heating component of the dryer, and multiple sets can be arranged along the circumference of the dryer to improve the drying effect of the dryer.

[0056] The stirring shaft 4 includes a pushing blade 401, a shaft tube 402, a dispersing blade 403, and a shaft head 404; the pushing blade 401 pushes the material forward as the stirring shaft rotates; the shaft tube 402 is equipped with pushing blades and dispersing blades; the dispersing blade 403 is equipped with 2-3 dispersing rakes, which more effectively disperse the material as the shaft rotates.

[0057] The transmission component 1 includes a motor, a reducer, large and small sprockets, and a chain. The motor and reducer are generally connected by flanges for easy equipment positioning. The structural design of the large and small sprockets can further reduce the speed of the equipment. Under the same conditions, a reducer with a higher safety factor is selected. Chain drive is more stable than belt drive, and the chain replacement cycle is longer, which does not affect the normal operation of the equipment.

[0058] The end seat 2 includes an end plate and a bearing support structure. Horizontal dryers are generally equipped with two bearings. Each end flange at both ends of the shell is equipped with an end seat. The seal between the end plate and the shell is a tenon and groove seal, and the sealing ring material is fluororubber.

[0059] The transmission component 1 includes a motor, a reducer, large and small sprockets, and a chain. The motor and reducer are generally connected by flanges for easy equipment positioning. The structural design of the large and small sprockets can further reduce the speed of the equipment. Under the same conditions, a reducer with a higher safety factor is selected. Chain drive is more stable than belt drive, and the chain replacement cycle is longer, which does not affect the normal operation of the equipment.

[0060] Furthermore, in an electrically heated dryer, the main heating component is an electric heating element, which is evenly distributed between the dryer shell and the jacket. The material is inside the shell, and the electric heating element releases heat through thermal radiation to heat the material, thereby achieving the purpose of drying the material. The electric heating element is close to the outer wall of the shell and is evenly distributed within the circumference of the outer wall, which increases the range of thermal radiation. The electric heating element is wrapped by the jacket and does not directly contact the air, reducing heat waste and saving energy.

[0061] As a technical optimization of this utility model, the electric heating dryer uses electric heating elements as the main heating component. In order to avoid the failure of electric heating elements due to circuit faults, the electric heating elements are arranged in a single parallel manner. The jacket is provided with partitions on both sides, and junction boxes are led out from the partitions. The circuits of each electric heating element are arranged in parallel in the junction boxes.

[0062] Furthermore, the electric heating dryer has support legs welded to the outer wall of the jacket. The support leg structure is a circular arc plate with stiffening plates, and the stiffening plates are connected to the base plate. The base plate generally has four mounting bolt holes arranged diagonally; the support legs are connected to the overall frame of the dryer via bolts. The support leg structure is simple, and the appropriate support leg size can be selected according to the shape and weight of the dryer. The bolt connection facilitates disassembly, making it convenient for maintenance of the electric heating dryer.

[0063] As a technical optimization of this utility model, the electric heating dryer has a horizontal structure and includes a transmission system, end seat, shell, stirring shaft, jacket, shaft end seal, bearing, filter, frame and support legs, etc. The end seat and shell flange are connected by bolts and sealed by tenon and groove surfaces, with a sealing gasket in the middle, which can effectively prevent the risk of material leakage.

[0064] As a technical optimization of this utility model, the shaft end seal of the electrically heated dryer is a two-stage combined rotary shaft seal device. A labyrinth seal is provided at the front end of the second-stage seal. A nitrogen isolation chamber is provided between the first and second-stage seals. Nitrogen gas can be introduced into the nitrogen isolation chamber to further prevent leakage of dust and other substances, effectively extending the service life of the shaft end seal. The shaft end seal is existing technology and will not be described in detail here.

[0065] Furthermore, the shell of the electrically heated dryer adopts a circular structure, and a suitable diameter can be selected according to the actual situation. The bottom of the dryer shell is equipped with a discharge port. In order to prevent material blockage at the discharge port, the discharge port flange can be a flange flange. The flange flange is directly welded to the inner wall of the shell, which reduces the length of the pipe required by using ordinary flanges. The flange flange is directly connected to the downstream valve to prevent material blockage caused by bridging.

[0066] As a technical optimization of this utility model, the stirring shaft of the electrically heated dryer is a cold shaft, without a heating medium. The circumference of the dryer is covered with electric heating elements, and the material is heated evenly through continuous stirring by the stirring shaft. The stirring shaft does not have heating blades, reducing the amount of welding required and lowering the processing difficulty of the equipment, further avoiding the risk of leakage due to a large number of welds.

[0067] Structural composition: This utility model explicitly includes a "carrier gas outlet filter", "multiple sets of electric heating elements in the jacket", "motor + reducer + large and small sprockets + chain transmission system", and "welded shell + bolted frame support structure". Existing technical documents do not simultaneously include this combined structure.

[0068] Dust handling: The filter is specifically designed to filter dust entrained in the carrier air, and the dust can fall back into the dryer for further drying; existing dust removal / filtration devices such as bag filters and adsorption filters only separate dust and do not have a dust recovery function.

[0069] Heating design: The electric heating elements are built into the jacket and arranged in multiple groups along the circumference; existing electric heating technologies are mostly bottom, jacket, or external heating such as hot air furnaces and steam jackets, and are not designed with multiple groups concentrated in the jacket.

[0070] Transmission connection: adopts "motor-reducer flange connection + sprocket and chain drive"; existing technologies mostly use direct coupling connection, gear drive or hydraulic drive, and there is no stable transmission combination like this.

[0071] Installation design: The outriggers are welded to the housing and connected to the frame with bolts, supporting the pre-assembly of the whole machine; existing technologies rarely involve the pre-assembly design of outriggers and frame, and the installation accuracy depends on on-site debugging.

[0072] Dust fallback and recycling: avoid material waste, improve raw material utilization, and reduce environmental dust pollution.

[0073] Uniform and efficient heating: Multiple sets of electric heating elements inside the jacket have a wide heat radiation range, which, together with the stirring shaft, ensures that the material is heated evenly, reducing energy consumption compared to external heating.

[0074] Stable and reliable transmission: Chain drive is more stable than belt drive or direct connection, and the replacement cycle is extended by 2-3 times, reducing equipment downtime for maintenance.

[0075] Controllable installation precision: Pre-assembly of the whole machine reduces on-site installation errors, improves installation efficiency, and reduces installation costs.

[0076] Jacket structure: The jacket includes an inner wall, electric heating elements, electrical junction box and partitions. The electric heating elements are arranged in parallel. Existing jackets do not have partitions and dedicated junction boxes. The electric heating is mostly integral and does not have parallel fault tolerance design.

[0077] Stirring shaft structure: The stirring shaft integrates "push blades + shaft tube + 2-3 dispersing rakes + shaft head"; the existing stirring structure is a single spiral blade, scraper or stirring paddle, without the combined design of pushing and dispersing.

[0078] Shell function: The shell contains a hot nitrogen gas flow inlet equipped with a backflush screen, and the material outlet is equipped with a flap / insert plate discharge structure; existing technology does not have a hot nitrogen backflush design, and material discharge is mostly through air guide plates or natural discharge, without a precise control structure.

[0079] Transmission details: The motor and reducer are connected by a flange and a sprocket reduction design; in the existing technology, the motor and reducer are mostly directly fixed with bolts, without the dual stability design of flange positioning and sprocket reduction.

[0080] Filter functions: The filter includes a gas phase outlet, a backflush port, and a pressure / temperature measurement port; existing filtration / dust removal devices only have basic air intake / exhaust functions and lack multi-interface maintenance and monitoring designs.

[0081] Sealing design: The end plate and the housing are sealed with a tongue and groove joint and equipped with a fluororubber sealing ring; existing technologies mostly use flat sealing or simple gasket sealing, without a tongue and groove joint for high sealing structure.

[0082] Heating fault tolerance: The electric heating elements are connected in parallel to avoid the whole machine from shutting down due to the failure of a single element, thus reducing maintenance costs.

[0083] Uniform material processing: The pusher blades advance the material, and the rake breaks up clumps of material, improving the uniformity of material drying and eliminating localized undried areas.

[0084] Purging and feeding adaptation: The hot nitrogen back-blowing screen increases the purging area, and the feeding structure precisely controls the speed, adapting to different materials such as granules and powders.

[0085] Precise transmission positioning: Flange connection facilitates equipment positioning and installation, and sprocket reduction further improves transmission stability and reduces equipment failure rate.

[0086] Easy filter maintenance: The multi-port design supports backflushing and cleaning, pressure monitoring, and extends the filter's service life, eliminating the need for frequent disassembly.

[0087] Leak-proof sealing: The tongue and groove surface is sealed with fluororubber, and the leakage rate is close to zero, preventing the leakage of toxic or easily contaminated materials.

[0088] Existing technical documents only contain individual features of this utility model in a scattered manner (such as some having filtration and some having stirring), but do not disclose the synergistic combination of "multiple sets of electric heating in the jacket + material pushing + dispersing and stirring + dust fall-off filtration + chain drive + tenon groove sealing + pre-assembled support legs". The design goals of existing technologies are mostly "simple drying", "reaction + drying integration" or "continuous feeding", while the core goal of this utility model is "efficient drying + material recovery + stable operation + convenient installation".

[0089] Structures include "dust fall-off filter," "material pushing + dispersing combined stirring shaft," and "parallel electric heating + partition junction box within the jacket." Maximizing material utilization: The carrier gas outlet filter enables dust fall-off and re-drying, solving the core pain point of material waste in existing technologies and improving raw material utilization. Superior drying efficiency and uniformity: Multiple sets of electric heating + material pushing + dispersing combined stirring within the jacket improve the uniformity of material heating, shorten drying time, and reduce energy consumption. Industry-leading operational stability: The motor-reducer flange connection + sprocket and chain drive, combined with a single parallel electric heating element, reduces equipment failure rate and extends maintenance cycles.

[0090] High adaptability and operability: The hot nitrogen backflushing screen and flip / insert plate feeding structure are suitable for various materials such as granules, powders, and slurries, and the feeding speed can be precisely controlled. High sealing and environmental friendliness: The tongue and groove surface and fluororubber sealing design result in a near-zero leakage rate. Combined with dust fall-off, it fully meets environmental protection requirements and is suitable for toxic and easily contaminated materials. Convenient and efficient installation and maintenance: The pre-assembled design reduces installation errors. Multiple filter interfaces and modular design of the stirring shaft improve maintenance efficiency and reduce installation costs.

[0091] In summary, this utility model relates to the fields of chemical and environmental protection production technology, and particularly to a horizontal electric heating dryer. The dryer includes a transmission system, end seats, a shell, a stirring shaft, a jacket, a shaft end seal, bearings, a filter, a frame, and support legs. The transmission system includes a motor, a reducer, large and small sprockets, and a chain. The end seats include a dryer end plate and a bearing support structure. The shell includes a feed inlet, a discharge outlet, a carrier gas outlet, a hot nitrogen gasification inlet, a manhole, and other pipe openings, as well as an inner shell and end flanges. The carrier gas outlet is equipped with a filter to filter the dust carried by the evaporated moisture; the filtered dust falls into the dryer for further drying. The stirring shaft includes a shaft body and blades; the blades continuously stir the material to ensure uniform heating. An electric heating element is installed inside the jacket; this element is the main heating component of the dryer. The support legs are welded to the dryer shell and connected to the frame with bolts, allowing the dryer to be shipped as a complete unit, achieving pre-assembly and further ensuring installation accuracy.

[0092] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A horizontal electric heating dryer, characterized in that, The dryer includes a transmission system (1), end seat (2), housing (3), stirring shaft (4), jacket (5), shaft end seal (6), bearing (7), filter (8), frame (9) and support legs (10). The transmission system (1) includes a motor, a reducer, large and small sprockets and a chain; the motor and reducer form the power output part, and the power output part can transmit power to the stirring shaft (4) for rotation through the sprocket transmission structure; The end seat (2) includes a dryer end plate and a bearing support structure; the stirring shaft (4) passes through the dryer end plate and the bearing support structure and extends into the housing (3); The shell (3) includes a feed inlet (11), a discharge outlet (14), a carrier gas outlet, a hot nitrogen gasification port (13), and a manhole (12); the shell (3) contains an inner shell, and end flanges are arranged on the sides of the shell (3); The dryer has a filter (8) at the air outlet. The filter (8) can filter the dust carried by the evaporated water. The filtered dust can fall into the dryer to continue drying. The stirring shaft (4) includes a shaft body and blades. The material can be heated evenly through the continuous stirring of the blades. An electric heating element is installed inside the jacket (5), which is the main heating component of the dryer; The support legs (10) are welded to the dryer housing and connected to the frame by bolts.

2. A horizontal electric heating dryer as described in claim 1, characterized in that, A jacket (5) is formed between the outer shell (3) and the inner shell. The jacket (5) includes the inner wall (501), electric heating elements (502), electrical junction boxes (503), and partitions (504). The electric heating elements (502) are the main heating components of the dryer. Multiple sets of electric heating elements (502) are arranged along the circumference of the dryer to improve the drying effect of the dryer. The electric heating elements are arranged in a single parallel manner. Partitions (504) are provided on both sides of the jacket. Junction boxes are led out on the partitions (504). The wiring of each electric heating element is arranged in parallel in the junction boxes.

3. A horizontal electric heating dryer as described in claim 1, characterized in that, The stirring shaft (4) includes a pushing blade (401), a shaft tube (402), a dispersing blade (403), and a shaft head (404). The pushing blade (401) can push the material forward as the stirring shaft rotates. The shaft tube (402) is provided with pushing blades and dispersing blades. The dispersing blade (403) is provided with 2-3 dispersing rakes, which can more effectively disperse the material as the shaft rotates. The shaft head (404) is provided at both ends of the shaft tube. The stirring shaft includes one shaft tube and two shaft heads.

4. A horizontal electric heating dryer as described in claim 1, characterized in that, The hot nitrogen gas flow port is located below the housing and can be used to introduce hot nitrogen gas. The hot nitrogen gas can enter the dryer through the backflush screen, thereby increasing the purging area and further improving the hot nitrogen purging efficiency. A gas phase outlet (801) and a pressure gauge port (802) are arranged on the top of the filter housing. A backflush port (803) is arranged on the side of the filter housing. A filter element fixing structure (806) is arranged inside the filter housing. The backflush port (803) can backflush the polyester cloth pleated filter element (807). The polyester cloth pleated filter element (807) is fixed on the filter element fixing structure (806). A tail gas safety discharge port (804) is arranged on the side of the filter housing. A spare port (805) is arranged below the filter housing.

5. A horizontal electric heating dryer as described in claim 1, characterized in that, The discharge port is located at the bottom of the housing, and the discharge port is equipped with a flap or insert plate structure for feeding, which can control the feeding time and speed of the equipment.

6. A horizontal electric heating dryer as described in claim 1, characterized in that, The end seat (2) includes an end plate and a bearing support structure. Each end flange at both ends of the housing is equipped with an end seat. The seal between the end plate and the housing is a tenon and groove seal, and the sealing ring material is fluororubber.

7. A horizontal electric heating dryer as described in claim 1, characterized in that, The support legs are welded to the dryer housing and connected to the frame by bolts.

8. A horizontal electric heating dryer as described in claim 1, characterized in that, The electric heating elements are close to the outer wall of the shell and are evenly distributed within the circumference of the outer wall, which increases the range of heat radiation. The electric heating elements are wrapped with a jacket on the outside, so the electric heating elements do not come into direct contact with the air, which can reduce heat waste and save energy.

9. A horizontal electric heating dryer as described in claim 1, characterized in that, The shaft end seal of the electrically heated dryer is a two-stage combined rotary shaft seal device.

10. A horizontal electric heating dryer as described in claim 1, characterized in that, The shell of the electrically heated dryer adopts a circular structure; the discharge port flange can be a flange flange, which is directly welded to the inner wall of the shell, which can reduce the length of the pipe required by using ordinary flanges. The flange flange is directly connected to the downstream valve, which can prevent material blockage.

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