CN214147970U

CN214147970U - Waste heat recovery device of natural gas boiler

Info

Publication number: CN214147970U
Application number: CN202022929198.5U
Authority: CN
Inventors: 孙泳
Original assignee: Tianjin Baishigeng Food Co ltd
Current assignee: Tianjin Baishigeng Food Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-09-07
Anticipated expiration: 2030-12-07

Abstract

The utility model provides a waste heat recovery device of natural gas boiler, its characterized in that includes lower box, upper cover, bracing piece, mounting panel, V type baffle, sealed hold-down mechanism, locking mechanical system, the utility model discloses replaced prior art through the mode of fix with screw, the design of butterfly nut makes the staff no longer need the instrument to dismantle upper cover and lower box, has reduced the operation degree of difficulty when dismantling to a great extent, and adopts the mode of rotating the clamping block to dismantle the upper cover, better swift is compared with the one by one screw of dismantling of prior art, has reduced the condition emergence of delaying man-hour; and simultaneously the utility model discloses can be quick when needs are cleaned V type baffle dismantle V type baffle to V type baffle after the dismantlement washs more easily, can also clear up the gap between V type baffle that hardly clears up and the V type baffle in addition, and then prolonged the service life of V type baffle.

Description

Waste heat recovery device of natural gas boiler

Technical Field

The utility model relates to a natural gas boiler technical field especially relates to a natural gas boiler's waste heat recovery device.

Background

Natural gas boilers, that is, gas boilers using natural gas as fuel, in addition to natural gas boilers, gas boilers can be classified into city gas boilers, coke oven gas boilers, liquefied petroleum gas boilers, biogas boilers, methanol-fired boilers, and the like according to the fuel, natural gas boilers use natural gas as fuel to heat and supply domestic water, the main component of natural gas is methane, and methane generates carbon dioxide and water after combustion, so that the combustion of natural gas does not generate harmful air gas, and thus, as the cleanest fuel boilers, the natural gas boilers are widely used in our lives;

the fuel in the natural gas boiler can generate a large amount of high-temperature flue gas after being combusted, the discharged high-temperature flue gas usually takes away 20% -50% of the combustion heat in the boiler, the heat can be wasted after being directly discharged to the outside, and the utilization efficiency of the fuel is greatly reduced, so that a waste heat recovery device needs to be arranged to fully utilize the waste heat of the flue gas and prevent the waste caused by the loss of the heat; the other type of the heat recovery device also utilizes one end of the heat exchanger to absorb heat in the flue gas, the other end of the heat exchanger is introduced into water to heat the water, and the water can be used for the water supplementing effect of the boiler, but the heat exchange device of the traditional waste heat recovery device is flat-shaped, so that the contact area with the high-temperature flue gas is small once, the heat absorption efficiency is poor, and the traditional waste heat recovery device cannot be opened to clean and maintain the interior, so that the service life is short, and the practicability is poor; the waste heat recovery device for the gas boiler, which is provided according to the prior art, can effectively solve the problems;

according to CN201922026684.3, it includes a shell, a top cover, a connecting rod, a V-shaped baffle, an inner tube, the shell and the top cover are connected by screws, the inner tube for holding water is installed at the bottom of the shell, the connecting rod is fixed at the upper end of the inner tube, the heat of the gas boiler enters the shell through the gas inlet, the heat contacts with the V-shaped baffle and transfers the heat to the water in the inner tube through the mounting plate and the connecting rod, the water in the inner tube is heated gradually to a suitable temperature, and the water is discharged by opening the valve, the waste heat recovery device effectively increases the contact area with the high temperature smoke by arranging the V-shaped baffle, the recovery efficiency of the waste heat is improved to a great extent, and the purpose of cleaning and maintaining the interior is achieved by arranging the top cover and the shell through bolt connection, the waste heat recovery device is convenient to clean and maintain frequently, so that the service life of the waste heat recovery device can be greatly prolonged, and the practicability is improved; but still has the following defects in the specific using process: the upper cover and the shell are connected only through the screws, and the sealing structure is not arranged at the connecting part, so that high-temperature smoke is easily leaked from the connecting part when the high-temperature smoke is introduced into the shell, the smoke with heat is lost, and the waste heat recovery efficiency is reduced; and its V type baffle is after long-time the use, because can have a certain amount of dust in the high temperature flue gas, these dusts can be because static and moist air depend on V type baffle, after the dust accumulates certain degree and produces thickness, can make high temperature flue gas can not direct and V type baffle contact, thereby greatly reduced V type baffle's endothermic efficiency, consequently just need wash V type baffle, nevertheless because its V type baffle is fixed connection with the connecting plate, consequently can not dismantle it, and then lead to the gap between baffle and the baffle to be difficult to clear up, lead to the V type baffle clean not thorough, and then seriously influence the life time limit of V type baffle.

Disclosure of Invention

According to the technical problem, the utility model provides a waste heat recovery device of a natural gas boiler, which is characterized by comprising a lower box body, an upper cover, a support rod, a mounting plate, a V-shaped baffle, a sealing and pressing mechanism and a locking mechanism, wherein the support rod is welded at the bottom of the lower box body; the number of the supporting rods is two; an installation plate is arranged between the two support rods through bolts; the top and the bottom of the mounting plate are respectively provided with a V-shaped baffle; the number of the V-shaped baffles is N, and N is more than or equal to 2; a locking mechanism is arranged inside the mounting plate; the top of the lower box body is provided with an upper cover; the outer sides of the upper cover and the lower box body are provided with sealing and pressing mechanisms;

the locking mechanism consists of a fixed block, a top plate, an ejection spring, a lock pin mounting block, a ball, a return spring, a lower pressing block, a push rod and a push plate, wherein the fixed block is welded on the side wall of the V-shaped baffle; the mounting plate is internally provided with a mounting groove; the mounting groove is matched with the fixing block; one end of an ejection spring is welded at the bottom of the mounting groove; a top plate is welded at the other end of the ejection spring; a positioning groove is formed in the mounting plate; the positioning groove is arranged on the left side of the mounting groove; one end of a return spring is welded on the left side wall inside the positioning groove; the other end of the return spring is welded with a lock pin mounting block; the lock pin mounting block is of a right-angled trapezoid structure; the bottom of the lock pin mounting block is provided with a ball groove; the ball groove is internally provided with a ball; the ball is in contact with the bottom of the positioning groove; one end of the lock pin is welded on the right side wall of the lock pin mounting block; a through hole is formed in the right side wall inside the positioning groove; the other end of the lock pin penetrates through the through hole and extends into the mounting groove, and a locking groove is formed in the left side wall of the fixing block; the locking groove is matched with the locking pin for use; the upper end of the lock pin mounting block is connected with a lower pressing block in a sliding manner; the structure of the lower pressing block is the same as that of the lock pin mounting block; the lower pressing block is matched with the lock pin mounting block for use; one end of a push rod is welded at the top of the lower pressing block; a push rod hole is formed in the top of the positioning groove; the other end of the push rod penetrates through the push rod hole and extends to the outer side of the positioning groove, and a push plate is welded on the other end of the push rod;

the sealing and pressing mechanism consists of an upper boss, a lower boss, an upper sealing gasket, a sealing lug, a lower sealing gasket, a hinge, a cushion block, a pressing block, a pushing disc, a gasket, a butterfly nut, a threaded rod, a cushion pad and a clamping block, wherein the lower boss is welded at the top of the outer side wall of the lower box body; an upper boss is welded at the bottom of the outer side wall of the upper cover; the bottom of the upper boss is provided with an upper sealing gasket; a sealing convex block is arranged at the bottom of the upper sealing gasket; the top of the lower boss is provided with a groove; the top of the lower boss and the top of the groove are respectively provided with a lower sealing gasket; the upper sealing gasket, the sealing lug and the lower sealing gasket are matched for use; the upper sealing gasket, the sealing lug and the lower sealing gasket are made of rubber materials respectively; the bottom of the lower boss is provided with a hinge; the hinge is rotatably provided with a clamping block; the clamping block is of a U-shaped structure; a cushion block is welded at the bottom of the inner side wall of the clamping block; a buffer pad is arranged at the top of the inner side wall of the clamping block; the buffer cushion is made of rubber; the top of the inner side wall of the clamping block is provided with a pressing groove; the pressing groove is arranged on the right side of the cushion pad; the top of the pressing groove is provided with a threaded hole; the threaded hole is internally threaded with a threaded rod; a butterfly nut is welded at the top of the threaded rod; a gasket is arranged at the bottom of the butterfly nut; a push disc is welded at the bottom of the threaded rod; a pressing block is arranged at the bottom of the push disc; the pressing block is made of rubber.

The utility model has the advantages that:

the utility model discloses an increased sealed hold-down mechanism, reached the purpose that compresses tightly and seal upper cover and lower box, the utility model discloses an utilize upper seal pad and lower seal pad that set up between upper boss and the lower boss to use through sealed lug and the sealed recess cooperation of lower extreme, reached the effect of realizing sealing to the junction of upper cover and lower box, through designing sealed lug and sealed recess cooperation, reached good leakproofness and location nature, and then made the sealed effect better showing; and the upper boss and the lower boss are clamped inside by the compressing block which is arranged on the lower boss and connected by the hinge, at the moment, the butterfly nut is rotated to drive the threaded rod to push the push disc so that the compressing block applies pressure on the upper boss, and the upper boss and the lower boss are pressed and fixed by matching with the cushion block, when the upper cover is disassembled, the pressing block can be released from pressing the upper lug boss only by reversely rotating the butterfly nut, and then the clamping block is rotated outwards to achieve the purpose of taking down the upper cover, the mode replaces the mode of fixing through screws in the prior art, the design of the butterfly nut ensures that workers do not need tools to disassemble the upper cover and the lower box body any more, the operation difficulty during disassembly is reduced to a great extent, the upper cover is disassembled in a mode of rotating the clamping block, so that compared with the prior art that the screws are disassembled one by one, the disassembly is better and quicker, and the condition of delaying working hours is reduced;

the utility model is additionally provided with the locking mechanism, thereby achieving the purpose of quickly dismounting the V-shaped baffle, the utility model can move downwards by pressing the driving push rod of the push plate, and utilize the mutual matching between the lower pressing block and the inclined plane of the lock pin mounting block, so that the lock pin mounting block compresses the reset spring, and simultaneously drives the lock pin to relieve the locking limit of the locking groove, at the moment, the compressed ejection spring can return elasticity to push the top plate to eject the fixing block, thereby completing the dismounting of the V-shaped baffle, when the V-shaped baffle needs to be mounted, only the fixing block welded at the lower end of the V-shaped baffle needs to be dismounted into the mounting groove, the top plate compresses the ejection spring, when the lock pin is ejected into the locking groove to loosen the V-shaped baffle, the mounting of the V-shaped baffle can be completed, in such a way, the V-shaped baffle can be quickly dismounted when the V-shaped baffle needs to be cleaned, and the dismounted V-shaped baffle is easier to clean, and gaps between the V-shaped baffle plates which are difficult to clean can be cleaned, so that the service life of the V-shaped baffle plates is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the compression at a position a of the present invention;

fig. 3 is a schematic view of the loosening at a position of the present invention;

FIG. 4 is a schematic view of the installation at the position B of the present invention;

FIG. 5 is a schematic view of the utility model shown disassembled at B;

fig. 6 is an enlarged schematic view of the position C of the present invention.

As shown in the figure: 1-upper cover, 2-air inlet pipe, 3-air outlet pipe, 4-liquid outlet pipe, 5-lower box body, 6-support rod, 7-mounting plate, 8-V-shaped baffle, 9-clamping block, 11-upper boss, 12-upper sealing gasket, 13-sealing lug, 51-lower boss, 52-lower sealing gasket, 81-fixing block, 82-locking groove, 83-top plate, 84-ejection spring, 85-locking pin, 86-locking pin mounting block, 861-ball, 87-return spring, 88-lower pressing block, 89-push rod, 810-push plate, 811-positioning groove, 812-mounting groove, 91-hinge, 92-cushion block, 93-pressing block, 94-push plate, 95-gasket, 96-butterfly nut, 97-threaded rod, 98-buffer pad.

Detailed Description

Example 1

The utility model provides a waste heat recovery device of a natural gas boiler, which is characterized by comprising a lower box body 5, an upper cover 1, a support rod 6, a mounting plate 7, a V-shaped baffle 8, a sealing and pressing mechanism and a locking mechanism, wherein the support rod 6 is welded at the bottom of the lower box body 5; the number of the support rods 6 is two; a mounting plate 7 is arranged between the two support rods 6 through bolts; the top and the bottom of the mounting plate 7 are respectively provided with a V-shaped baffle 8; the number of the V-shaped baffles 8 is N, and N is more than or equal to 2; a locking mechanism is arranged inside the mounting plate 7; the top of the lower box body 5 is provided with an upper cover 1; the outer sides of the upper cover 1 and the lower box body 5 are provided with a sealing and pressing mechanism;

the locking mechanism consists of a fixed block 81, a top plate 83, an ejection spring 84, a lock pin 85, a lock pin mounting block 86, a ball 861, a return spring 87, a lower pressing block 88, a push rod 89 and a push plate 810, wherein the fixed block 81 is welded on the side wall of the V-shaped baffle 8; the mounting plate 7 is internally provided with a mounting groove 812; the mounting groove 812 is matched with the fixed block 81 for use; one end of the ejection spring 84 is welded at the bottom of the mounting groove 812; the other end of the ejecting spring 84 is welded with a top plate 83; a positioning groove 811 is arranged in the mounting plate 7; the positioning groove 811 is disposed at the left side of the mounting groove 812; one end of a return spring 87 is welded on the left side wall inside the positioning groove 811; the other end of the return spring 87 is welded with a lock pin mounting block 86; the lock pin mounting block 86 is of a right-angled trapezoidal structure; the bottom of the lock pin mounting block 86 is provided with a ball groove; a ball 861 is arranged in the ball groove; the ball 861 contacts the bottom of the positioning groove 811; the right side wall of the lock pin mounting block 86 is welded with one end of a lock pin 85; a through hole is formed in the right side wall inside the positioning groove 811; the other end of the lock pin 85 passes through the through hole and extends into the mounting groove 812, and the left side wall of the fixed block 81 is provided with a locking groove 82; the locking groove 82 cooperates with the locking pin 85; the upper end of the lock pin mounting block 86 is connected with a lower pressing block 88 in a sliding manner; the structure of the lower pressing block 88 is the same as that of the lock pin mounting block 86; the lower pressing block 88 is matched with the lock pin mounting block 86 for use; one end of a push rod 89 is welded at the top of the lower pressing block 88; the top of the positioning groove 811 is provided with a push rod 89 hole; the other end of the push rod 89 passes through the hole of the push rod 89 and extends to the outer side of the positioning groove 811, and a push plate 810 is welded on the other end of the push rod 89;

the sealing and pressing mechanism consists of an upper boss 11, a lower boss 51, an upper sealing gasket 12, a sealing convex block 13, a lower sealing gasket 52, a hinge 91, a cushion block 92, a pressing block 93, a pushing disc 94, a gasket 95, a butterfly nut 96, a threaded rod 97, a cushion pad 98 and a clamping block 9, wherein the top of the outer side wall of the lower box body 5 is welded with the lower boss 51; an upper boss 11 is welded at the bottom of the outer side wall of the upper cover 1; the bottom of the upper boss 11 is provided with an upper sealing gasket 12; the bottom of the upper sealing gasket 12 is provided with a sealing convex block 13; the top of the lower boss 51 is provided with a groove; the top of the lower boss 51 and the top of the groove are respectively provided with a lower sealing gasket 52; the upper sealing gasket 12, the sealing lug 13 and the lower sealing gasket 52 are matched for use; the upper sealing gasket 12, the sealing lug 13 and the lower sealing gasket 52 are made of rubber respectively; the bottom of the lower boss 51 is provided with a hinge 91; the hinge 91 is rotatably provided with a clamping block 9; the clamping block 9 is of a U-shaped structure; a cushion block 92 is welded at the bottom of the inner side wall of the clamping block 9; a buffer pad 98 is arranged at the top of the inner side wall of the clamping block 9; the cushion pad 98 is made of rubber; the top of the inner side wall of the clamping block 9 is provided with a pressing groove; the compression slot is disposed on the right side of the cushion 98; the top of the pressing groove is provided with a threaded hole; a threaded rod 97 is connected to the threaded hole in an internal thread manner; a butterfly nut 96 is welded at the top of the threaded rod 97; the bottom of the butterfly nut 96 is provided with a gasket 95; the bottom of the threaded rod 97 is welded with a push disc 94; the bottom of the push disc 94 is provided with a pressing block 93; the pressing block 93 is made of rubber.

Example 2

When the utility model is used for waste heat recovery, high-temperature flue gas is introduced into the air inlet pipe 2 and contacts the V-shaped baffle 8, so that the V-shaped baffle 8 absorbs heat in the high-temperature flue gas and then introduces the heat into the water at the lower end through the mounting plate 7 and the support rod 6, and then the high-temperature flue gas is discharged from the air outlet pipe 3;

the utility model discloses when needing to dismantle upper cover 1 and clearing up V type baffle 8, the staff first need dismantle upper cover 1, the staff first needs rotatory butterfly nut, make threaded rod 97 and screw hole threaded engagement move upwards, and then drive pushing disc 94 and compact heap 93 and leave the top of upper boss 11, compact heap 93 relieves the pushing down to upper boss 11 promptly, afterwards, the staff only needs to grasp clamping block 9, rotate to the outside under the effect of hinge 91, can make clamping block 9 relieve the clamp of upper boss 11 and lower boss 51; the purpose of separating the upper cover 1 from the lower box body 5 can be further achieved, then, a worker needs to detach the mounting plate 7 from the supporting rod 6 and take the mounting plate 7 out of the lower box body 5, then the worker can drive the push rod 89 to move downwards by pressing the push plate 810, and the lock pin mounting block 86 moves under the action of the balls 861 by utilizing the mutual matching between the lower pressing block 88 and the inclined surface of the lock pin mounting block 86, compress the return spring 87 and simultaneously drive the lock pin 85 to release the locking limit of the locking groove 82, at the moment, the compressed ejection spring 84 can recover elasticity to push the top plate 83 to eject the fixing block 81, so that the detachment of the V-shaped baffle plate 8 is completed, and finally, the worker can perform all-around cleaning on the detached V-shaped baffle plate 8;

when the utility model finishes the installation after the cleaning of the V-shaped baffle 8, the worker only needs to disassemble the fixed block 81 welded at the lower end of the V-shaped baffle 8 into the installation groove 812, forcibly make the top plate 83 compress the ejection spring 84, when the lock pin 85 is bounced into the locking groove 82 to loosen the V-shaped baffle 8, the installation of the V-shaped baffle 8 can be completed, then the worker needs to install the installation plate 7 with the installed V-shaped baffle 8 on the support rod 6 again, then cover the upper cover 1 on the upper end of the lower box body 5, grasp the clamping block 9 with the hand and rotate through the hinge 91 to clamp the upper boss 11 and the lower boss 51 inside, at this time, the threaded rod 97 can be driven to push the push disc 94 to move downwards by rotating the butterfly nut 96 reversely, so that the pressing block 93 applies pressure to the upper boss 11, the upper boss 11 and the lower boss 51 are pressed and fixed by matching with the cushion block 92, and the waste heat recovery treatment can be continued after the installation is finished.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The waste heat recovery device of the natural gas boiler is characterized by comprising a lower box body, an upper cover, a supporting rod, a mounting plate, a V-shaped baffle, a sealing and pressing mechanism and a locking mechanism, wherein the supporting rod is welded at the bottom of the lower box body; the number of the supporting rods is two; an installation plate is arranged between the two support rods through bolts; the top and the bottom of the mounting plate are respectively provided with a V-shaped baffle; a locking mechanism is arranged inside the mounting plate; the top of the lower box body is provided with an upper cover; the outer sides of the upper cover and the lower box body are provided with sealing and pressing mechanisms;

the sealing and pressing mechanism consists of an upper boss, a lower boss, an upper sealing gasket, a sealing lug, a lower sealing gasket, a hinge, a cushion block, a pressing block, a pushing disc, a gasket, a butterfly nut, a threaded rod, a cushion pad and a clamping block, wherein the lower boss is welded at the top of the outer side wall of the lower box body; an upper boss is welded at the bottom of the outer side wall of the upper cover; the bottom of the upper boss is provided with an upper sealing gasket; a sealing convex block is arranged at the bottom of the upper sealing gasket; the top of the lower boss is provided with a groove; the top of the lower boss and the top of the groove are respectively provided with a lower sealing gasket; the bottom of the lower boss is provided with a hinge; the hinge is rotatably provided with a clamping block; the clamping block is of a U-shaped structure; a cushion block is welded at the bottom of the inner side wall of the clamping block; a buffer pad is arranged at the top of the inner side wall of the clamping block; the buffer cushion is made of rubber; the top of the inner side wall of the clamping block is provided with a pressing groove; the pressing groove is arranged on the right side of the cushion pad; the top of the pressing groove is provided with a threaded hole; the threaded hole is internally threaded with a threaded rod; a butterfly nut is welded at the top of the threaded rod; a gasket is arranged at the bottom of the butterfly nut; a push disc is welded at the bottom of the threaded rod; and a pressing block is arranged at the bottom of the push disc.

2. The waste heat recovery device of the natural gas boiler according to claim 1, wherein the number of the V-shaped baffles is N, and N is more than or equal to 2.

3. The waste heat recovery device of the natural gas boiler according to claim 1, wherein the upper sealing gasket, the sealing projection, and the lower sealing gasket are made of rubber.

4. The waste heat recovery device of the natural gas boiler as claimed in claim 1, wherein the compression block is made of rubber.

5. The waste heat recovery device of a natural gas boiler according to claim 1, wherein the upper packing, the sealing projection and the lower packing are used in cooperation.