Steam boiler flue gas waste heat recovery device

Abstract

The utility model belongs to the technical field of waste heat recovery devices, and particularly relates to a steam boiler flue gas waste heat recovery device which comprises a waste heat recoverer and an installation shell, a filter shell is movably arranged in the installation shell, and a grid filter layer, a fiber filter layer, a ceramic filter layer and an activated carbon filter layer are respectively arranged in clamping grooves in a clamping mode. According to the utility model, the ceramic filter layer and the activated carbon filter layer are mounted, so that smoke firstly passes through the grid filter layer after entering the mounting shell through the through hole, the grid filter layer can effectively filter dust contained in the smoke, and then tiny particles in the smoke can be captured through the fiber filter layer and the ceramic filter layer; the effects of reducing the concentration of the smoke and improving the air quality are achieved, harmful substances such as peculiar smell contained in the smoke can be adsorbed and filtered through the activated carbon filter layer, and the technical problems that fine dust in the smoke is likely to be attached to the heat exchange pipe, the heat conversion rate is reduced, and the surrounding air is polluted to a certain degree by the odorous substances are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a steam boiler flue gas waste heat recovery device. Background Art

[0002] The steam boiler flue gas waste heat recovery device is a device specially used to recover the waste heat in the steam boiler flue gas. The steam boiler is a common industrial equipment used to generate steam for heating or driving machinery. During the operation of the steam boiler, the flue gas will be discharged into the atmosphere at high temperature, which contains a large amount of thermal energy. In order to improve energy utilization efficiency and reduce energy waste, a steam boiler flue gas waste heat recovery device can be used to recover the waste heat in the flue gas. By recovering the waste heat in the steam boiler flue gas, fuel consumption is reduced and energy costs are reduced. The use of waste heat in steam boiler flue gas is in line with the concept of sustainable development and promotes industrial production to develop in the direction of low energy consumption and low emissions.

[0003] Patent document CN207527620U discloses a flue gas waste heat recovery device for a gas-fired steam boiler, "including a gas-fired steam boiler, a flue gas exhaust pipe, a softening water tank, a blower and a deaerator, etc., and a first flue gas heat exchanger, a second flue gas heat exchanger and a third flue gas heat exchanger are arranged in the flue gas exhaust pipe. The water outlet end of the softening water tank is connected to the inlet of the first flue gas heat exchanger, and the outlet of the first flue gas heat exchanger is connected to the water outlet pipe, and the water outlet pipe is divided into a first branch and a second branch. The first branch is connected to the water inlet end of the softening water tank, and the second branch is connected to the deaerator through a deaerator water pump. The deaerator is connected to the inlet of the second flue gas heat exchanger, and the outlet of the second flue gas heat exchanger is connected to the water replenishment end of the gas-fired steam boiler. The blower is connected to the inlet of the third flue gas heat exchanger, and the outlet of the third flue gas heat exchanger is connected to the air inlet end of the gas-fired steam boiler. The utility model can fully recycle and utilize the flue gas waste heat of the gas-fired steam boiler, and effectively reduce the energy consumption of the gas-fired boiler."

[0004] However, the gas steam boiler flue gas waste heat recovery device in the above-mentioned public document does not take into account that the existing flue gas waste heat recovery device usually does not have the function of purifying and filtering the recovered flue gas when in use. The flue gas contains a large amount of heat as well as a large amount of unpleasant odor substances and fine dust. The dust is easy to adhere to the heat exchange tubes in the flue gas waste heat recovery device, thereby reducing the heat conversion rate of the heat exchange tubes. The odor substances may cause certain pollution to the surrounding air. Therefore, it is necessary to develop a steam boiler flue gas waste heat recovery device, which can effectively solve the problems raised above. Utility Model Content

[0005] The utility model aims to provide a steam boiler flue gas waste heat recovery device to solve the technical problems raised in the above background technology that fine dust in the flue gas is easy to contaminate the heat exchange tubes and reduce the heat conversion rate, and odor substances will cause certain pollution to the surrounding air.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam boiler flue gas waste heat recovery device, comprising a waste heat recovery device and a mounting shell, one end of the waste heat recovery device is through-set with a smoke inlet, one end of the smoke inlet is through-connected with the mounting shell, a filter shell is movably arranged in the mounting shell, four groups of card slots are opened on the filter shell, a mesh filter layer, a fiber filter layer, a ceramic filter layer and an activated carbon filter layer are respectively engaged in the card slots, a sealing plate is fixedly arranged on one side of the filter shell, and the sealing plate is sealed and connected to one side of the mounting shell, and two groups of handles are fixedly arranged on one side of the sealing plate.

[0007] Preferably, a water inlet is provided through one end of the waste heat recovery device, and a water outlet is provided through the other end of the waste heat recovery device.

[0008] Preferably, one end of the waste heat recovery device is connected through a smoke outlet, and the smoke outlet is located below the water outlet.

[0009] Preferably, a plurality of U-shaped plates are provided at the bottom of the waste heat recovery device, and supporting legs are fixedly provided at the bottom of the U-shaped plates.

[0010] Preferably, four groups of circular grooves are symmetrically provided in the installation shell, and four groups of threaded holes are symmetrically provided on the installation shell, and the threaded holes are connected with the circular grooves.

[0011] Preferably, a screw rod is threadedly connected to the threaded hole, a rotating knob is fixedly provided on the top of the screw rod, and a clamping column is fixedly provided on the bottom of the screw rod.

[0012] Preferably, a through hole is provided through the mounting shell, and a connecting pipe is provided on the through hole.

[0013] Preferably, four groups of sliding columns are fixedly provided on one side of the sealing plate, and the sliding columns are symmetrically located inside the circular groove. A limiting groove is provided at one end of the sliding column, and the limiting groove is engaged and connected with the clamping column.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is equipped with an installation shell, a filter shell, a card slot, a mesh filter layer, a fiber filter layer, a sealing plate, a ceramic filter layer and an activated carbon filter layer. When a steam boiler flue gas waste heat recovery device is used, the installation shell is used to provide an internal installation filter shell. The installation shell and the filter shell are detachable. The sealing plate can form a sealing effect with the connection of the installation shell. The card slot is used to stably engage and install four groups of filter layers. When the flue gas enters the installation shell through the through hole, it first passes through the mesh filter layer, and the mesh filter layer can effectively filter the dust contained in the flue gas. Then, the fiber filter layer and the ceramic filter layer can capture the tiny particles in the flue gas, so as to achieve the effect of reducing the concentration of the flue gas and improving the air quality. The flue gas can form adsorption and filtration for harmful substances such as odor contained in the flue gas through the activated carbon filter layer, and then the flue gas will be discharged into the waste heat recovery device through the smoke inlet to form waste heat recovery and utilization, which effectively solves the technical problems that fine dust in the flue gas is easily contaminated on the heat exchange tube to reduce the heat conversion rate, and odor substances will cause certain pollution to the surrounding air.

[0016] 2. The utility model is equipped with a sliding column, a limiting groove, a threaded hole, a screw, a rotating knob, a circular groove and a clamping column. When the steam boiler flue gas waste heat recovery device needs to remove and replace the filter layer, the sliding column and the circular groove are correspondingly arranged to form a limiting effect when the filter shell is installed. The threaded hole is arranged so that the screw can drive the clamping column to form a clamping and fixing effect on the limiting groove. The rotating knob serves to facilitate personnel to rotate the screw. When the screw drives the clamping column to separate from the clamping groove, the personnel can take out the filter shell by pulling the handle to replace the filter layer, which effectively improves the efficiency and convenience of replacing the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation shell structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the filter housing structure of the utility model;

[0020] Figure 4 For the utility model Figure 2 A schematic diagram of the enlarged structure in the middle;

[0021] Figure 5 For the utility model Figure 2 A magnified schematic diagram of the structure B in the middle;

[0022] Figure 6 For the utility model Figure 3 Enlarged schematic diagram of the C structure in the middle.

[0023] In the figure: 1. Waste heat recovery device; 11. Water inlet; 111. Water outlet; 112. Smoke inlet; 113. Smoke outlet; 114. U-shaped plate; 115. Support leg; 2. Mounting shell; 21. Threaded hole; 211. Screw; 212. Rotating knob; 213. Clamping column; 214. Circular groove; 22. Through hole; 221. Connecting pipe; 3. Filter shell; 31. Clamping groove; 311. Mesh filter layer; 312. Fiber filter layer; 313. Ceramic filter layer; 314. Activated carbon filter layer; 315. Sealing plate; 316. Handle; 32. Sliding column; 321. Limiting groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 and Figure 3 A steam boiler flue gas waste heat recovery device comprises a waste heat recovery device 1 and a mounting shell 2. A smoke inlet 112 is provided at one end of the waste heat recovery device 1. One end of the smoke inlet 112 is connected to the mounting shell 2. A filter shell 3 is movably provided in the mounting shell 2. Only four groups of card slots 31 are provided on the filter shell 3. A mesh filter layer 311, a fiber filter layer 312, a ceramic filter layer 313 and an activated carbon filter layer 314 are respectively engaged in the card slots 31. A sealing plate 315 is fixedly provided on one side of the filter shell 3, and the sealing plate 315 is sealed and connected to one side of the mounting shell 2.

[0026] When the steam boiler flue gas waste heat recovery device is used, the installation shell 2 is used to provide an internal installation filter shell 3. The installation shell 2 and the filter shell 3 are detachable. The sealing plate 315 can form a sealing effect with the connection between the installation shell 2. The card slot 31 is used to stably engage and install four groups of filter layers. When the flue gas enters the installation shell 2 through the through hole 22, it first passes through the mesh filter layer 311. The mesh filter layer 311 can effectively filter the dust contained in the flue gas. Then, the fiber filter layer 312 and the ceramic filter layer 313 can capture the tiny particles in the flue gas, so as to reduce the concentration of the flue gas and improve the air quality. The flue gas can pass through the activated carbon filter layer 314 to form adsorption and filtration of harmful substances such as odor contained in the flue gas. Then, the flue gas will be discharged into the waste heat recovery device 1 through the smoke inlet 112 to form waste heat recovery and utilization, which effectively solves the technical problems that fine dust in the flue gas is easily contaminated on the heat exchange tube to reduce the heat conversion rate, and odor substances will cause certain pollution to the surrounding air.

[0027] See also Figure 1 A water inlet 11 is provided at one end of the waste heat recovery device 1, a water outlet 111 is provided at the other end of the waste heat recovery device 1, a smoke outlet 113 is provided at one end of the waste heat recovery device 1, and the smoke outlet 113 is located below the water outlet 111. The waste heat recovery device 1 is configured to be cylindrical in shape, with the upper half being a water tank and the lower half being a heat conversion mechanism. The water inlet 11 and the water outlet 111 are existing structures and therefore will not be described in detail. The smoke outlet 113 can discharge smoke by connecting a drainage pipe.

[0028] See also Figure 1 A plurality of U-shaped plates 114 are arranged at the bottom of the waste heat recovery device 1, and a support leg 115 is fixedly arranged at the bottom of the U-shaped plate 114. The U-shaped plate 114 is fitted with the waste heat recovery device 1, and the support leg 115 can form a stable support effect for the waste heat recovery device 1.

[0029] See also Figure 1 and Figure 2 A through hole 22 is provided on the mounting shell 2, and a connecting pipe 221 is provided on the through hole 22. The connecting pipe 221 is used to provide a smoke outlet 113 connected to the steam boiler. The through hole 22 is provided on the front and back sides of the mounting shell 2 to transmit smoke.

[0030] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Four groups of circular grooves 214 are symmetrically provided in the mounting shell 2, four groups of threaded holes 21 are symmetrically provided on the mounting shell 2, and the threaded holes 21 are connected with the circular grooves 214, a screw rod 211 is threadedly connected in the threaded hole 21, a rotating knob 212 is fixedly provided on the top of the screw rod 211, a clamping column 213 is fixedly provided on the bottom of the screw rod 211, four groups of sliding columns 32 are fixedly provided on one side of the sealing plate 315, and the sliding columns 32 are symmetrically located inside the circular groove 214, a limiting groove 321 is provided at one end of the sliding column 32, and the limiting groove 321 is engaged with the clamping column 213, and two groups of handles 316 are fixedly provided on one side of the sealing plate 315.

[0031] When the steam boiler flue gas waste heat recovery device needs to be used to remove and replace the filter layer, the sliding column 32 and the circular groove 214 are set correspondingly, which can form a limiting effect when the filter shell 3 is installed. The setting of the threaded hole 21 can enable the screw 211 to drive the clamping column 213 to form a clamping and fixing effect on the limiting groove 321. The rotating knob 212 serves to facilitate personnel to rotate the screw 211. When the screw 211 drives the clamping column 213 to separate from the clamping groove 31, the personnel can remove the filter shell 3 by pulling the handle 316 to replace the filter layer, which effectively improves the efficiency and convenience of replacing the filter layer.

[0032] Working principle: when using the steam boiler flue gas waste heat recovery device, the installation shell 2 is used to provide an internal installation filter shell 3. The installation shell 2 and the filter shell 3 are detachable. The sealing plate 315 can form a sealing effect with the connection of the installation shell 2. The card slot 31 is used to stably engage and install four groups of filter layers. When the flue gas enters the installation shell 2 through the through hole 22, it first passes through the mesh filter layer 311. The mesh filter layer 311 can effectively filter the dust contained in the flue gas. Then, the fiber filter layer 312 and the ceramic filter layer 313 can capture the tiny particles in the flue gas, so as to reduce the concentration of the flue gas and improve the air quality. The flue gas passes through the activated carbon filter layer 314 to absorb and filter the harmful substances such as odor contained in the flue gas. Then, the flue gas The smoke will be discharged into the waste heat recovery device 1 through the smoke inlet 112 to achieve waste heat recovery and utilization, which effectively solves the technical problems that fine dust in the smoke is easily contaminated on the heat exchange tube to reduce the heat conversion rate, and odor substances will cause certain pollution to the surrounding air. The sliding column 32 and the circular groove 214 are set correspondingly, which can form a limiting effect when the filter shell 3 is installed. The setting of the threaded hole 21 can make the screw 211 drive the clamping column 213 to form a clamping and fixing effect on the limiting groove 321. The rotating knob 212 provides convenience for personnel to rotate the screw 211. When the screw 211 drives the clamping column 213 to separate from the clamping groove 31, the personnel can take out the filter shell 3 by pulling the handle 316 to replace the filter layer, which effectively improves the replacement efficiency and convenience of the filter layer.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A steam boiler flue gas waste heat recovery device, comprising a waste heat recovery device (1) and a mounting shell (2), wherein one end of the waste heat recovery device (1) is provided with a smoke inlet (112), and one end of the smoke inlet (112) is connected to the mounting shell (2), characterized in that: A filter shell (3) is movably arranged in the installation shell (2); four groups of slots (31) are provided on the filter shell (3); a mesh filter layer (311), a fiber filter layer (312), a ceramic filter layer (313) and an activated carbon filter layer (314) are respectively engaged in the slots (31); a sealing plate (315) is fixedly arranged on one side of the filter shell (3); the sealing plate (315) is in close contact with and sealed to one side of the installation shell (2); and two groups of handles (316) are fixedly arranged on one side of the sealing plate (315).

2. A steam boiler flue gas waste heat recovery device according to claim 1, characterized in that: A water inlet (11) is provided through one end of the waste heat recovery device (1), and a water outlet (111) is provided through the other end of the waste heat recovery device (1).

3. A steam boiler flue gas waste heat recovery device according to claim 2, characterized in that: One end of the waste heat recovery device (1) is connected through a smoke outlet (113), and the smoke outlet (113) is located below the water outlet (111).

4. A steam boiler flue gas waste heat recovery device according to claim 2, characterized in that: A plurality of U-shaped plates (114) are arranged at the bottom of the waste heat recovery device (1), and a supporting leg (115) is fixedly arranged at the bottom of the U-shaped plate (114).

5. The steam boiler flue gas waste heat recovery device according to claim 1, characterized in that: Four groups of circular grooves (214) are symmetrically provided in the installation shell (2), and four groups of threaded holes (21) are symmetrically provided on the installation shell (2), and the threaded holes (21) are connected to the circular grooves (214).

6. A steam boiler flue gas waste heat recovery device according to claim 5, characterized in that: The threaded hole (21) is internally threadedly connected to a screw rod (211), a rotating knob (212) is fixedly disposed on the top of the screw rod (211), and a clamping column (213) is fixedly disposed on the bottom of the screw rod (211).

7. The steam boiler flue gas waste heat recovery device according to claim 5, characterized in that: The installation shell (2) is provided with a through hole (22), and the through hole (22) is provided with a connecting pipe (221).

8. The steam boiler flue gas waste heat recovery device according to claim 1, characterized in that: Four groups of sliding columns (32) are fixedly arranged on one side of the sealing plate (315), and the sliding columns (32) are symmetrically located inside the circular groove (214). A limiting groove (321) is provided at one end of the sliding column (32), and the limiting groove (321) is engaged and connected with the clamping column (213).

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