CN221123096U

CN221123096U - Novel natural gas preheater

Info

Publication number: CN221123096U
Application number: CN202322649747.7U
Authority: CN
Inventors: 张艺; 贾学山
Original assignee: Shanghai Xianyao Industrial Co ltd
Current assignee: Shanghai Xianyao Industrial Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-06-11
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to a novel natural gas preheater, which comprises a preheating box, wherein a heat conducting screen plate is fixed in an inner cavity of the preheating box, a preheating pipe is fixed on the front surface of the heat conducting screen plate, a fixing box is fixed in the middle of the right side wall of the inner cavity of the preheating box, one end of the preheating pipe is fixed with the left side of the fixing box, a cleaning mechanism is arranged at the right end of the upper surface of the preheating box, an air inlet sleeve is communicated with the top of the right side wall of the inner cavity of the preheating box, the right side of the air inlet sleeve penetrates through the preheating box and extends to the right side of the preheating box, and a disassembling mechanism is arranged on the right side of the air inlet sleeve, and the cleaning mechanism comprises a motor fixed at the right end of the upper surface of the preheating box. This novel natural gas pre-heater drives the initiative bevel gear through the output shaft rotation that sets up the motor and rotates, and then makes driven bevel gear, dwang and cleaning roller rotate, makes the cleaning roller can rotate at the surface of filter screen, can wipe the dust on filter screen surface off, is convenient for clear up a collection section of thick bamboo simultaneously, and then has improved the heat transfer efficiency of filter screen.

Description

Novel natural gas preheater

Technical Field

The utility model relates to the technical field of preheaters, in particular to a novel natural gas preheater.

Background

The air preheater is a tail waste heat recovery device of the natural gas boiler, and is characterized in that supplementary combustion air entering the boiler firstly enters the air preheater for heating, the flue gas is not in direct contact with a heated medium but is conducted through the pipe wall, the heat exchange pipe is continuously heated when the flue gas flows through the heat exchanger, combustion air outside the pipe flows in the opposite direction to the flow direction of the flue gas, and the combustion air outside the pipe can quickly absorb the heat of the flue gas, so that the exhaust gas temperature is reduced, and the supplementary combustion air temperature of the boiler is improved.

Chinese patent publication No. found by search: CN 207893791U discloses an air preheater of a natural gas heating boiler, comprising a preheating box, wherein a preheating box is arranged in the preheating box, a flue pipe and a smoke exhaust pipe are respectively horizontally arranged at one end in the preheating box, one ends of the flue pipe and the smoke exhaust pipe are communicated with the interior of the preheating box, the other ends of the flue pipe and the smoke exhaust pipe extend to the exterior of the preheating box.

However, when the dust collector is used, dust on the filter screen falls into the dust collecting cylinder through the dust discharge port, and dust particles are small and possibly adhere to the filter screen, so that the dust collector is inconvenient to clean, and the heat transfer efficiency is reduced.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a novel natural gas preheater which has the advantages of being capable of cleaning a filter screen and the like, and solves the problems that dust particles are small and possibly adhered to the filter screen, so that the dust particles are inconvenient to clean and the heat transfer efficiency is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel natural gas preheater, includes the preheating box, the inner chamber of preheating box is fixed with the heat conduction otter board, the front of heat conduction otter board is fixed with the preheating pipe, the middle part of preheating box inner chamber right side wall is fixed with fixed box, the one end of preheating pipe is fixed with the left side of fixed box, the right-hand member of preheating box upper surface is equipped with clearance mechanism, the top intercommunication of preheating box inner chamber right side wall has the cover that admits air, the right side of the cover that admits air runs through the preheating box and extends to the right side of preheating box, the right side of the cover that admits air is equipped with the mechanism of tearing open;

The cleaning mechanism comprises a motor fixed at the right end of the upper surface of the preheating box, an output shaft of the motor penetrates through the air inlet sleeve and extends to an inner cavity of the air inlet sleeve and is fixedly provided with a drive bevel gear, a filter screen is fixed at the left end of the inner cavity of the air inlet sleeve, a rotating rod is connected to the right side of the filter screen through bearing rotation, a driven bevel gear is fixed to the right side of the rotating rod, a cleaning roller is fixed to the outer surface of the rotating rod and one end, close to the filter screen, of the rotating rod, a dust outlet hole is formed in the inner bottom wall of the air inlet sleeve, a guide cover is fixed on the lower surface of the air inlet sleeve, and a collecting barrel is connected to the outer surface of the guide cover through threads.

Further, the top of preheating cabinet left side intercommunication has the outlet duct, the other end and the outlet duct intercommunication of preheating pipe, the bottom intercommunication of preheating cabinet left side has out the tobacco pipe.

Further, the left side wall of the inner cavity of the fixed box is rotationally connected with an electric fan through a bearing, the inner cavity of the fixed box is communicated with an air inlet pipe, and the other end of the air inlet pipe penetrates through the fixed box and extends to the right side of the preheating box.

Further, the driving bevel gear is in meshed connection with the driven bevel gear, and the diameter of the cleaning roller is smaller than the radius of the filter screen.

Further, the diameter of the opening on the upper surface of the air guide sleeve is larger than that of the dust outlet, and the cross section of the air guide sleeve is in the shape of an inverted isosceles trapezoid.

Further, the disassembly and replacement mechanism comprises a groove formed in the right side of the air inlet sleeve, the inner cavity of the air inlet sleeve is connected with an air inlet pipe in a threaded mode, and a sealing gasket is fixed on the outer surface of the air inlet pipe.

Further, the internal diameter of recess and the external diameter looks adaptation of sealed pad, the left and right sides both ends of cover surface of admitting air are fixed with the sealing washer.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. This novel natural gas pre-heater drives the initiative bevel gear through the output shaft rotation that sets up the motor and rotates, and then makes driven bevel gear, dwang and cleaning roller rotate, makes the cleaning roller can rotate at the surface of filter screen, can wipe the dust on filter screen surface off, is convenient for clear up a collection section of thick bamboo simultaneously, and then has improved the heat transfer efficiency of filter screen.

2. This novel natural gas pre-heater is detachable structure through the cover of admitting air that sets up and the tobacco pipe of admitting air, can be after the tobacco pipe of admitting air uses a period, changes it, and then can avoid the flue gas to form the deposition when flowing through the tobacco pipe of admitting air.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a cleaning mechanism according to the present utility model;

fig. 3 is a schematic structural view of the replacing mechanism of the present utility model.

In the figure: the device comprises a preheating box 1, a heat conducting screen plate 2, a preheating pipe 3, a fixing box 4, a cleaning mechanism 5, a motor 501, a driving bevel gear 502, a filter screen 503, a rotating rod 504, a driven bevel gear 505, a cleaning roller 506, a dust outlet 507, a guide cover 508, a collecting cylinder 509, an air inlet sleeve 6, a disassembling and replacing mechanism 7, a groove 701, a smoke inlet pipe 702 and a sealing pad 703.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, a novel natural gas preheater in this embodiment includes a preheating tank 1, a heat conducting mesh plate 2 is fixed in an inner cavity of the preheating tank 1, a preheating pipe 3 is fixed on a front surface of the heat conducting mesh plate 2, a fixing box 4 is fixed in a middle portion of a right side wall of the inner cavity of the preheating tank 1, one end of the preheating pipe 3 is fixed with a left side of the fixing box 4, a cleaning mechanism 5 is arranged at a right end of an upper surface of the preheating tank 1, an air inlet sleeve 6 is communicated with a top portion of the right side wall of the inner cavity of the preheating tank 1, a right side of the air inlet sleeve 6 penetrates through the preheating tank 1 and extends to a right side of the preheating tank 1, and a detaching mechanism 7 is arranged on a right side of the air inlet sleeve 6.

Wherein, the top intercommunication in preheating cabinet 1 left side has the outlet duct, and the other end and the outlet duct intercommunication of preheating pipe 3, and the bottom intercommunication in preheating cabinet 1 left side has out the tobacco pipe, and the left side wall of the inner chamber of fixed box 4 is connected with electric fan through the bearing rotation, and the inner chamber intercommunication of fixed box 4 has the intake pipe, and the other end of intake pipe runs through fixed box 4 and extends to the right side of preheating cabinet 1.

Referring to fig. 2, in order to improve heat transfer efficiency, the cleaning mechanism 5 in this embodiment includes a motor 501 fixed at the right end of the upper surface of the preheating tank 1, an output shaft of the motor 501 penetrates through an air inlet sleeve 6 and extends to an inner cavity of the air inlet sleeve 6 and is fixed with a driving bevel gear 502, a filter screen 503 is fixed at the left end of the inner cavity of the air inlet sleeve 6, a rotating rod 504 is rotatably connected to the right side of the filter screen 503 through a bearing, a driven bevel gear 505 is fixed to the right side of the rotating rod 504, the output shaft of the motor 501 rotates to drive the driving bevel gear 502 to rotate, the driving bevel gear 502 rotates to drive the driven bevel gear 505 to rotate, the rotating rod 504 rotates, a cleaning roller 506 is fixed at one end of the outer surface of the rotating rod 504, which is close to the filter screen 503, dust can be scraped off, a dust outlet 507 is formed in the inner bottom wall of the air inlet sleeve 6, a guide cover 508 is fixed at the lower surface of the air inlet sleeve 6, a collecting cylinder 509 is threadedly connected to the outer surface of the guide cover 508, and the scraped dust can enter the inner cavity 509 of the guide cover 508 through the dust outlet 507, and then enter the collecting cylinder 509.

Wherein, the driving bevel gear 502 is engaged with the driven bevel gear 505, the diameter of the cleaning roller 506 is smaller than the radius of the filter screen 503, the diameter of the opening on the upper surface of the air guide sleeve 508 is larger than the diameter of the dust outlet 507, and the cross section of the air guide sleeve 508 is in the shape of an inverted isosceles trapezoid.

It should be noted that, the through hole has been seted up at the top of preheating cabinet 1 inner chamber, and it is articulated through the door hinge that it is located the right side of through hole at the top on preheating cabinet 1 right side, and the left side of sealing door is fixed with the sealing block with through-hole diameter looks adaptation, and preheating cabinet 1 all is fixed with the magnetite with the opposite one side of handhole door.

It will be appreciated that after a period of time, the user may open the sealing door and extend his hand into the through hole, unscrew the collection canister 509, clean the dust and screw again into the lower surface of the pod 508.

Referring to fig. 3, in order to avoid dust attached to the inner cavity of the air inlet sleeve 6, the replacing mechanism 7 in this embodiment includes a groove 701 formed on the right side of the air inlet sleeve 6, a smoke inlet pipe 702 is screwed into the inner cavity of the air inlet sleeve 6, after the smoke inlet pipe 702 is used for a period of time, the smoke inlet pipe 702 can be screwed out of the inner cavity of the air inlet sleeve 6, and then cleaned, the smoke inlet pipe 702 can be screwed into the inner cavity of the air inlet sleeve 6, a sealing pad 703 is fixed on the outer surface of the smoke inlet pipe 702, and leakage can be avoided when smoke enters the air inlet sleeve 6 through the provided sealing pad 703.

Wherein, the internal diameter of recess 701 and the external diameter looks adaptation of sealing pad 703, and the left and right sides of inlet cover 6 surface all is fixed with the sealing washer.

It should be noted that, the flue gas enters the inner cavity of the preheating box 1 through the smoke inlet pipe 702, then the air is pumped into the inner cavity of the preheating pipe 3 through the electric fan, and the flue gas can heat the air through the preheating pipe 3, so that the preheating area is increased, and the preheating effect is improved.

The control mode of the utility model is controlled by the controller, the control circuit of the controller can be realized by simple programming by a person skilled in the art, the supply of power also belongs to common knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and circuit connection in detail.

The working principle of the embodiment is as follows:

(1) When the filter screen 503 is cleaned, the motor 501 is started firstly, the output shaft of the motor 501 rotates to drive the drive bevel gear 502 to rotate, the drive bevel gear 502 rotates to drive the driven bevel gear 505 to rotate, the rotating rod 504 rotates, the cleaning roller 506 can be driven to rotate, the cleaning roller 506 can rotate on the outer surface of the filter screen 503, dust can be scraped off, the scraped dust can enter the inner cavity of the guide cover 508 through the dust outlet 507 and then enter the inner cavity of the collection barrel 509, after a period of time, a user can open the sealing door to stretch hands into the through holes, the collection barrel 509 can be screwed off, and the dust can be cleaned and screwed into the lower surface of the guide cover 508 again.

(2) The flue gas does not have any deashing treatment before flowing through the flue gas inlet pipe 702, the ash content in the flue gas is higher, the gap of the flue gas inlet pipe 702 is very narrow, the flue gas naturally forms ash deposit when flowing through the flue gas inlet pipe 702, in order to prevent ash deposit formation in the flue gas inlet pipe 702, after the flue gas inlet pipe 702 is used for a period of time, the flue gas inlet pipe 702 can be screwed out of the inner cavity of the air inlet sleeve 6, after the flue gas inlet pipe 702 is cleaned, the flue gas can be screwed into the inner cavity of the air inlet sleeve 6, and the flue gas can be prevented from leaking outwards when entering the air inlet sleeve 6 through the sealing gasket 703.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a novel natural gas pre-heater, includes preheating cabinet (1), its characterized in that: the preheating box is characterized in that a heat conducting screen plate (2) is fixed in an inner cavity of the preheating box (1), a preheating pipe (3) is fixed on the front surface of the heat conducting screen plate (2), a fixing box (4) is fixed in the middle of the right side wall of the inner cavity of the preheating box (1), one end of the preheating pipe (3) is fixed with the left side of the fixing box (4), a cleaning mechanism (5) is arranged at the right end of the upper surface of the preheating box (1), an air inlet sleeve (6) is communicated with the top of the right side wall of the inner cavity of the preheating box (1), the right side of the air inlet sleeve (6) penetrates through the preheating box (1) and extends to the right side of the preheating box (1), and a disassembling and replacing mechanism (7) is arranged on the right side of the air inlet sleeve (6);

The utility model provides a clean-up mechanism (5) is including fixing motor (501) at preheating cabinet (1) upper surface right-hand member, the output shaft of motor (501) runs through air inlet sleeve (6) and extends to the inner chamber of air inlet sleeve (6) and be fixed with initiative bevel gear (502), the left end in air inlet sleeve (6) inner chamber is fixed with filter screen (503), the right side of filter screen (503) is connected with dwang (504) through the bearing rotation, the right side of dwang (504) is fixed with driven bevel gear (505), the surface of dwang (504) and the one end that is close to filter screen (503) are fixed with cleaning roller (506), go out dirt hole (507) have been seted up to the interior bottom wall of air inlet sleeve (6), the lower surface of air inlet sleeve (6) is fixed with kuppe (508), the surface threaded connection of kuppe (508) has a collecting vessel (509).

2. A novel natural gas preheater as set forth in claim 1, wherein: the top of preheating cabinet (1) left side communicates there is the outlet duct, the other end and the outlet duct intercommunication of preheating pipe (3), the bottom of preheating cabinet (1) left side communicates there is the play tobacco pipe.

3. A novel natural gas preheater as set forth in claim 1, wherein: the left side wall of the inner cavity of the fixed box (4) is rotationally connected with an electric fan through a bearing, the inner cavity of the fixed box (4) is communicated with an air inlet pipe, and the other end of the air inlet pipe penetrates through the fixed box (4) and extends to the right side of the preheating box (1).

4. A novel natural gas preheater as set forth in claim 1, wherein: the driving bevel gear (502) is in meshed connection with the driven bevel gear (505), and the diameter of the cleaning roller (506) is smaller than the radius of the filter screen (503).

5. A novel natural gas preheater as set forth in claim 1, wherein: the diameter of the opening on the upper surface of the air guide sleeve (508) is larger than that of the dust outlet (507), and the cross section of the air guide sleeve (508) is in the shape of an inverted isosceles trapezoid.

6. A novel natural gas preheater as set forth in claim 1, wherein: the disassembly and assembly mechanism (7) comprises a groove (701) formed in the right side of the air inlet sleeve (6), an inner cavity of the air inlet sleeve (6) is connected with an air inlet pipe (702) in a threaded mode, and a sealing gasket (703) is fixed on the outer surface of the air inlet pipe (702).

7. The novel natural gas preheater as set forth in claim 6, wherein: the inner diameter of the groove (701) is matched with the outer diameter of the sealing gasket (703), and sealing rings are fixed at the left end and the right end of the outer surface of the air inlet sleeve (6).