A duct-type air heater

Abstract

This invention discloses a duct-type air heater, relating to the field of duct technology. It includes a housing, multiple heating tubes disposed inside the housing, a partition on one side of each heating tube, a housing cover on the top of the housing, and an air inlet box connected to one side of the housing. A locking assembly between the housing cover and the housing is used for removing and installing the housing cover. Cleaning components on both sides of the partition are used for cleaning the partition. A dust removal assembly inside the air inlet box is used for removing dust from the air inside the air inlet box. This duct-type air heater uses a locking assembly to connect the housing and the housing cover, making the housing cover easy to install and remove. It also connects the housing cover to the heating tubes, facilitating the disassembly and maintenance of the heating tubes. The dust removal assembly adsorbs some dust and impurities in the air before it enters the housing, thus preventing dust from adhering to the heating tubes after entering the housing and affecting the heating effect.

Description

Technical Field

[0001] This invention relates to a pipeline air heater, and relates to the field of pipeline technology. Background Technology

[0002] A pipe heater is an energy-saving device that preheats materials. It is installed before the material equipment to directly heat the material, allowing it to circulate and heat at high temperatures, ultimately achieving energy savings. A pipe heater consists of two parts: the main body and the control system. However, in existing technologies, the high-temperature resistance and insulation effect of the insulation cotton in pipe heaters are generally poor. Moreover, at the connection section of the air outlet, the metal sleeve is exposed, resulting in a large amount of heat loss and energy waste. When the air heater stops working, the condensate generated after the internal heat cools cannot be discharged. Therefore, an energy-saving device for a pipe-type air heater is needed.

[0003] To address the aforementioned issues, patent CN211317017U, entitled "An Energy-Saving Device for a Pipeline Air Heater," enhances insulation by using insulation cotton made of aluminosilicate ceramic fiber and includes a wastewater outlet to drain condensate generated during heat dissipation. However, this device still has certain drawbacks in practical use. For instance, the heating element is typically protected by a steel pipe, which contains high-temperature resistance alloy wire and crystalline magnesium oxide powder. After prolonged use, the steel pipe is easily corroded by condensate, causing the high-temperature resistance alloy wire inside to come into direct contact with the air and the crystalline magnesium oxide powder to leak out. Therefore, maintenance is required after a certain period of use. However, this device makes it difficult to remove the heating element from the casing. Furthermore, pipeline heaters are used in various fields, such as textiles, printing and dyeing, ceramics, and electrostatic spraying. During ceramic production, grinding generates a significant amount of dust. Since this device lacks a dust removal function, this dust easily enters the casing with the outside air and adheres to the heating element, affecting its heating effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pipeline air heater, which uses a locking assembly to connect the housing and the cover, making the cover easy to disassemble and assemble, and connects the cover to the heating tube, making it easy to disassemble and assemble the heating tube for maintenance. It also includes a dust removal assembly, which adsorbs some of the dust and impurities in the air before the air enters the housing, thereby preventing dust from adhering to the heating tube after entering the housing and affecting its heating effect.

[0005] The technical problem to be solved by this invention is achieved by the following technical solution:

[0006] A duct-type air heater includes: a housing; multiple heating tubes disposed inside the housing, with a partition on one side of each heating tube; a housing cover on the top of the housing; and an air inlet box connected to one side of the housing. A locking assembly is disposed between the housing cover and the housing for assembling and disassembling the housing cover; cleaning assemblies are disposed on both sides of the partition for cleaning the partition; and a dust removal assembly is disposed inside the air inlet box for dust removal from the air inside the air inlet box.

[0007] Preferably, the engaging assembly includes: a plurality of rotating blocks disposed on both sides of the housing and rotatably connected by a rotating shaft; a rectangular slot formed on one side of the rotating blocks; and a plurality of locking blocks connected to both sides of the housing and used in conjunction with the slot, wherein the side of the locking block away from the housing protrudes from the slot.

[0008] Preferably, the top of the housing has a slot, and the bottom of the housing cover is connected to a plug for use with the slot. Both the slot and the plug are U-shaped. The slot has a fitting block inside, and multiple springs are provided between the bottom of the fitting block and the slot to ensure the sealing between the housing cover and the housing.

[0009] Preferably, the cleaning component includes: rectangular scrapers disposed on both sides of the partition; a slider connected between the two scrapers; and a groove formed on one side of the partition to be used in conjunction with the slider, wherein a plurality of grooves are arranged in a relatively staggered manner for cleaning the partition.

[0010] Preferably, a horizontal plate is connected to the bottom of the heating tube, the top of the heating tube is connected to the shell cover, a lifting plate is provided at the bottom of the horizontal plate, one side of the lifting plate is connected to one of the scrapers, and an insert plate is provided between the horizontal plate and the lifting plate for driving the scraper to move.

[0011] Preferably, the bottom sides of the horizontal plate are provided with grooves, and the sides of the horizontal plate are provided with slots. One side of the inner wall of the slot is provided with a through groove that communicates with the groove. The side of the insert plate near the slot is provided with a moving slot. A locking block is provided inside the moving slot. A compression spring is provided between the locking block and the moving slot. Multiple movable slots are provided on both sides of the inner wall of the housing. A protrusion is provided inside the movable slot. A return spring is provided between the protrusion and the movable slot for connecting the horizontal plate and the lifting plate.

[0012] Preferably, the dust removal assembly includes: a dust removal box disposed inside the air intake box, wherein the dust removal box is hollow; activated carbon particles filled inside the dust removal box; an air outlet opened at the top of the dust removal box and communicating with the interior of the dust removal box; and an air inlet opened at the bottom of the dust removal box and communicating with the interior of the dust removal box, for removing dust from the air inside the air intake box.

[0013] Preferably, a baffle is provided inside the air inlet, an opening is provided on the front of the air inlet box, support plates are connected to both sides of the inner wall of the air inlet box, and the dust collection box is located on top of the support plate for replacing activated carbon particles.

[0014] Preferably, an air intake pipe is connected to one side of the air intake box, an exhaust box is connected to the side of the housing away from the air intake box, an exhaust pipe is connected to the top of the exhaust box, and air vents communicating with the air intake box and the exhaust box are opened on both sides of the housing. Insulation cotton is installed on the outside of the housing to guide air into the housing.

[0015] Preferably, a water collection tank is connected to the bottom of the housing, and multiple drain outlets are provided at the bottom of the housing. A movable plate is provided inside the water collection tank, and multiple plugs for use with the drain outlets are connected to the top of the movable plate. A threaded hole is provided at the bottom of the water collection tank, and a threaded rod is provided inside the threaded hole. The threaded rod is threadedly connected to the threaded hole, and the top end of the threaded rod is rotatably connected to the movable plate through a bearing. A limit rod is connected to the inner wall of the bottom of the water collection tank, and a limit hole for use with the limit rod is provided on one side of the top of the movable plate. A drain pipe is connected to the bottom of the water collection tank for draining the water accumulated in the housing.

[0016] The beneficial effects of this invention are:

[0017] The housing and cover are connected by a locking assembly, which makes it easy to install and remove the cover and connect the cover to the heating element, making it easy to disassemble and repair the heating element. Specifically, one end of the locking block is inserted into the locking groove to lock the cover onto the top of the housing. When removing or installing the cover, one end of the locking block is slid out of the locking groove, and then the cover is separated from the housing to remove the heating element from the housing.

[0018] A dust removal component is provided, which adsorbs some of the dust and impurities in the air before it enters the housing, thereby preventing dust from adhering to the heating tube after entering the housing and affecting its heating effect.

[0019] A cleaning component is provided, which can clean the partition while the heating element is being removed from the housing, thereby extending the service life of the partition. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a cross-sectional view of the structure of the present invention.

[0022] Figure 3 This is a top sectional view of the shell structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the partition structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the movable plate structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the lifting plate structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the bump structure of the present invention.

[0027] Figure 8 This is a side view of the heating tube structure of the present invention.

[0028] Figure 9 This is a side sectional view of the insert structure of the present invention.

[0029] Figure 10 This is a schematic diagram of the insert structure of the present invention.

[0030] Figure 11 This is a cross-sectional view of the dust collector box structure of the present invention.

[0031] Figure 12 For the present invention Figure 1 Enlarged view of point A in the image.

[0032] Figure 13 For the present invention Figure 3 Enlarged view of point B in the image.

[0033] Figure 1-13 In the middle: 1-Shell; 101-Heating tube; 102-Baffle; 103-Shell cover; 104-Air inlet box; 2-Rotating block; 201-Slot; 202-Slotting block; 3-Slot; 301-Insertion block; 302-Fitting block; 303-Spring; 4-Scraper; 401-Slider; 402-Slide groove; 5-Horizontal plate; 501-Lifting plate; 502-Insertion plate; 6-Groove; 601-Slotted; 602-Moving 603-Card engaging block; 604-Compression spring; 605-Modible groove; 606-Protrusion; 607-Reset spring; 7-Dust collector box; 701-Activated carbon granules; 702-Air outlet; 703-Air inlet; 8-Air inlet pipe; 801-Exhaust box; 802-Exhaust pipe; 803-Insulation cotton; 9-Water collection box; 901-Modible plate; 902-Block; 903-Threaded rod; 904-Limit rod. Detailed Implementation

[0034] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, a duct-type air heater includes a housing 1, multiple heating tubes 101 disposed inside the housing 1, a partition 102 disposed on one side of the heating tubes 101, a housing cover 103 disposed on the top of the housing 1, an air inlet box 104 connected to one side of the housing 1, a locking assembly disposed between the housing cover 103 and the housing 1 for disassembling and assembling the housing cover 103, cleaning assemblies disposed on both sides of the partition 102 for cleaning the partition 102, and a dust removal assembly disposed inside the air inlet box 104 for removing dust from the air inside the air inlet box 104.

[0037] Among them, reference Figure 2 and Figure 12 The locking assembly includes multiple rotating blocks 2 disposed on both sides of the housing cover 103 and rotatably connected by a rotating shaft. A rectangular slot 201 is opened on one side of the rotating block 2. Multiple locking blocks 202 are connected to both sides of the housing 1 and used in conjunction with the slot 201. The side of the locking block 202 away from the housing 1 protrudes from the slot 201. The housing cover 103 is installed on the top of the housing 1 by the locking assembly. The housing cover 103 can also be removed from the top of the housing 1 by the locking assembly, and the housing cover 103 can be separated from the housing 1, so that the heating tube 101 can be taken out from the housing 1 through the housing cover 103, thereby facilitating the maintenance of the heating tube 101.

[0038] The housing 1 has a slot 3 at its top, and a plug 301 for use with the slot 3 is connected to the bottom of the cover 103. Both the slot 3 and the plug 301 are U-shaped. A fitting block 302 is provided inside the slot 3, and multiple springs 303 are installed between the bottom of the fitting block 302 and the slot 3. When the heating element 101 needs to be removed from the housing 1, the rotating block 2 is rotated via a pivot, causing the locking block 202 to slide out of the slot 201. Then, the cover 103 is moved upwards until it removes the heating element 101 from the housing 1. Then, the heating element is removed. After the heating tube 101 is inspected, the heating tube 101 is put back into the housing 1, and the bottom of the housing cover 103 is attached to the housing 1. At this time, the insert block 301 is inserted into the slot 3 to push the fitting block 302 to compress the spring 303. Then, the rotating block 2 is rotated by the rotating shaft until the locking block 202 is inserted into the slot 201. At this time, the housing cover 103 is locked and installed on the top of the housing 1 by the locking block 202 in the slot 201. At this time, the elastic force of the spring 303 pushes the fitting block 302 and the insert block 301 to fit tightly, thereby ensuring the sealing between the housing cover 103 and the housing 1.

[0039] Example 2

[0040] Based on Example 1, and referring to Figure 3 and Figure 4The cleaning component includes rectangular scrapers 4 disposed on both sides of the partition 102, a slider 401 connected between the two scrapers 4, and a groove 402 on one side of the partition 102 that is used in conjunction with the slider 401. Multiple grooves 402 are arranged in a staggered manner. The cleaning component cleans the partition 102, thereby preventing dust and impurities in the air from accumulating on the partition 102 and extending the service life of the partition 102. The slider 401 is used to connect the two scrapers 4, while the groove 402 is used to ensure the sliding of the slider 401 and the flow of air within the housing 1.

[0041] The heating tube 101 is connected to a horizontal plate 5 at its bottom and to a housing cover 103 at its top. A lifting plate 501 is located at the bottom of the horizontal plate 5, and one side of the lifting plate 501 is connected to a scraper 4. An insert plate 502 is located between the horizontal plate 5 and the lifting plate 501. When the housing cover 103 removes the heating tube 101 from the housing 1, the heating tube 101 moves the lifting plate 501 and the scraper 4 via the horizontal plate 5, causing the scraper 4 to clean both sides of the partition 102, and the horizontal plate 5 moves to the bottom of the protrusion 606. When the time is right, the protrusion 606 will be pushed into the movable groove 605 to compress the return spring 607. When the protrusion 606 is aligned with the slot 601, the protrusion 606 will move towards the slot 601 by the elastic force of the return spring 607 and push the locking block 603 towards the movable groove 602 to compress the compression spring 604. After the protrusion 606 is completely slid into the through groove at one end of the groove 6, the insert plate 502 will slide out from the groove 6, and the lifting plate 501 and the scraper 4 will move into the housing 1 by their own gravity.

[0042] The horizontal plate 5 has grooves 6 on both sides of its bottom, and slots 601 on both sides of its sides. A through groove communicating with the groove 6 is formed on one side of the inner wall of the slot 601. The insert plate 502 has a moving slot 602 on the side near the slot 601. A locking block 603 is installed inside the moving slot 602, and a compression spring 604 is installed between the locking block 603 and the moving slot 602. Multiple movable slots 605 are formed on both sides of the inner wall of the housing 1. A protrusion 606 is installed inside the movable slot 605, and a composite groove is installed between the protrusion 606 and the movable slot 605. When the heating tube 101 is placed back into the housing 1, the insert plate 502 will be inserted into the groove 6, and the groove 6 will push the locking block 603 to move towards the moving groove 602 and compress the compression spring 604 until the locking block 603 is aligned with the through groove. Then, the locking block 603 moves towards the through groove by the elastic force of the compression spring 604 until one end of the locking block 603 extends through the through groove into the slot 601. At this time, one end of the locking block 603 is locked in the slot 601, so that the horizontal plate 5 is connected to the lifting plate 501 through the insert plate 502.

[0043] Example 3

[0044] Based on Example 1, and referring to Figure 2 and Figure 11 The dust removal component includes a dust removal box 7 disposed inside the air intake box 104. The dust removal box 7 is hollow and filled with activated carbon particles 701. An air outlet 702 is opened at the top of the dust removal box 7 and communicates with the inside of the dust removal box 7. An air inlet 703 is opened at the bottom of the dust removal box 7 and communicates with the inside of the dust removal box 7. The dust removal component removes dust from the air entering the air intake box 104, thereby preventing dust in the air from entering the housing 1 and adhering to the heating tube 101, which would affect its heating effect.

[0045] The air inlet 703 is equipped with a baffle mesh, and the air inlet box 104 has an opening on the front. Support plates are connected to both sides of the inner wall of the air inlet box 104. The dust collector 7 is located on the top of the support plate. When the activated carbon particles 701 need to be replaced, the dust collector 7 is slid out of the air inlet box 104 through the opening. Then, the dust collector 7 is flipped over to pour out and replace the activated carbon particles 701 inside. The dust collector 7 is then slid into the air inlet box 104 through the opening and placed on the top of the support plate. The baffle mesh is used to prevent the activated carbon particles 701 from leaking out of the air outlet 702.

[0046] The air inlet box 104 is connected to an air inlet pipe 8 on one side, and an exhaust box 801 is connected to the side of the housing 1 away from the air inlet box 104. An exhaust pipe 802 is connected to the top of the exhaust box 801. Ventilation ports communicating with the air inlet box 104 and the exhaust box 801 are opened on both sides of the housing 1. Insulation cotton 803 is installed on the outside of the housing 1. When the device is used, outside air enters the air inlet box 104 through the air inlet pipe 8, passes through the air inlet 703 and enters the dust collector box 7, and then passes through the activated carbon particles 701 to filter the air. The air entering the dust collector 7 is dusted, and the dust-removed air passes through the air outlet 702 and the vent near the air inlet 104 to enter the housing 1. Then, the airflow into the housing 1 is restricted by the partition 102, which prolongs the heating time of the air in the housing 1, thereby enhancing the heating effect of the air. After heating, the air passes through the vent near the exhaust box 801 to enter the exhaust box 801, and finally exits from the exhaust pipe 802. The insulation cotton 803 is used to keep the housing 1 warm.

[0047] Example 4

[0048] Based on Example 1, and referring to Figure 2 and Figure 5The bottom of the housing 1 is connected to a water collection tank 9, which has multiple drain outlets. Inside the water collection tank 9 is a movable plate 901. Multiple plugs 902, matching the drain outlets, are connected to the top of the movable plate 901. A threaded hole is located at the bottom of the water collection tank 9, and a threaded rod 903 is installed inside the threaded hole. The threaded rod 903 is threaded into the threaded hole, and its top end is rotatably connected to the movable plate 901 via a bearing. A limit rod 904 is connected to the inner wall at the bottom of the water collection tank 9. A limit hole matching the limit rod 904 is located on one side of the top of the movable plate 901. A drain pipe is connected to the bottom of the water collection tank 9. To drain the water inside the housing 1, the threaded rod 903 is rotated, causing the threaded rod 903 to rotate within the threaded hole, which in turn causes the movable plate 901 to descend until the movable plate 901 drives the block 902 to slide out of the drain outlet. At this point, the water inside the housing 1 is drained into the water collection tank 9 through the drain outlet and then discharged through the drain pipe. After the water is drained, the threaded rod 903 is rotated in the opposite direction, causing the threaded rod 903 to drive the movable plate 901 to rise until the top of the block 902 is inserted into the drain outlet. The limiting rod 904 and the limiting hole are used to limit the movable plate 901, thereby preventing the movable plate 901 from shifting.

[0049] This device uses a locking assembly to connect the housing 1 and the cover 103, making the cover 103 easy to install and remove. The cover 103 is also connected to the heating tube 101, facilitating the disassembly and maintenance of the heating tube 101. Specifically, one end of the locking block 202 is inserted into the locking slot 201, locking the cover 103 onto the top of the housing 1. To remove the cover 103, one end of the locking block 202 is slid out of the locking slot 201, and then the cover 103 is separated from the housing 1 to remove the heating tube 101. When the cover 103 is installed on the top of the housing 1, the insert block 301 inserts into the slot 3, pushing the fitting block 302 to compress the spring 303. When the cover 103 is locked onto the top of the housing 1, the elastic force of the spring 303 pushes the fitting block 302 and the insert block 301 to fit tightly together, thus preventing air leakage from the housing 1 between the cover 103 and the housing 1.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ducted air heater characterized by, Comprising: A housing; Multiple heating tubes arranged inside the housing, with a partition plate provided on one side of the heating tubes, a shell cover provided on the top of the housing, and an air inlet box connected to one side of the housing; A clamping component arranged between the shell cover and the housing for disassembling and assembling the shell cover; Cleaning components arranged on both sides of the partition plate for cleaning the partition plate; A dust removal component arranged inside the air inlet box for removing dust from the air in the air inlet box; The cleaning component includes: Scrapers in a rectangular shape arranged on both sides of the partition plate; Sliders connected between the two scrapers; Chutes opened on one side of the partition plate and matching the sliders, with multiple chutes arranged in a relatively staggered manner; The bottom of the heating tube is connected to a cross plate, the top of the heating tube is connected to the shell cover, a lifting plate is arranged at the bottom of the cross plate, one side of the lifting plate is connected to one of the scrapers, and an insertion plate is arranged between the cross plate and the lifting plate; Grooves are opened on both sides of the bottom of the cross plate, slots are opened on both sides of the cross plate, a through groove communicating with the groove is opened on one side of the inner wall of the slot, a moving groove is opened on one side of the insertion plate close to the slot, a clamping block is arranged inside the moving groove, a compression spring is arranged between the clamping block and the moving groove, multiple moving grooves are opened on both sides of the inner wall of the housing, a convex block is arranged inside the moving groove, and a reset spring is arranged between the convex block and the moving groove.

2. The ducted air heater of claim 1, wherein, The clamping component includes: Multiple rotating blocks rotatably connected through a rotating shaft on both sides of the shell cover; A rectangular-shaped clamping slot opened on one side of the rotating block; Multiple clamping blocks connected to both sides of the housing and matching the clamping slot, with one side of the clamping block away from the housing protruding from the clamping slot.

3. The ducted air heater of claim 2, wherein, A slot is opened on the top of the housing, an insertion block is connected to the bottom of the shell cover and matching the slot, both the slot and the insertion block are in a "mouth" shape, a fitting block is arranged inside the slot, and multiple springs are arranged between the bottom of the fitting block and the slot.

4. The ducted air heater of claim 1, wherein, The dust removal component includes: A dust removal box arranged inside the air inlet box, with the inside of the dust removal box being hollow; Activated carbon particles filled inside the dust removal box; An air outlet opened on the top of the dust removal box and communicating with the inside of the dust removal box; An air inlet opened on the bottom of the dust removal box and communicating with the inside of the dust removal box.

5. The ducted air heater of claim 4, wherein, A retaining net is arranged inside the air inlet, an opening is opened on the front of the air inlet box, support plates are connected to both sides of the inner wall of the air inlet box, and the dust removal box is located on the top of the support plates.

6. The ducted air heater of claim 1, wherein, An air inlet pipe is connected to one side of the air inlet box, an exhaust box is connected to the side of the housing away from the air inlet box, an exhaust pipe is connected to the top of the exhaust box, ventilation openings communicating with the air inlet box and the exhaust box are opened on both sides of the housing, and heat insulation cotton is installed on the outside of the housing.

7. The ducted air heater of claim 1, wherein, A water collection tank is connected to the bottom of the housing, and multiple drain outlets are provided at the bottom of the housing. A movable plate is provided inside the water collection tank, and multiple plugs for use with the drain outlets are connected to the top of the movable plate. A threaded hole is provided at the bottom of the water collection tank, and a threaded rod is provided inside the threaded hole. The threaded rod is threadedly connected to the threaded hole, and the top end of the threaded rod is rotatably connected to the movable plate through a bearing. A limit rod is connected to the inner wall of the bottom of the water collection tank, and a limit hole for use with the limit rod is provided on one side of the top of the movable plate. A drain pipe is connected to the bottom of the water collection tank.

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