Boiler flue gas waste heat recycling device

Abstract

The utility model discloses a boiler flue gas waste heat recycling device which comprises a box body, a first scraping mechanism, a second scraping mechanism, a dust removal mechanism, a waste heat utilization box, a spiral gas guide pipe and a locking mechanism, the first scraping mechanism is arranged on the lower side of the interior of the box body, and the second scraping mechanism is arranged on the upper portion of the first scraping mechanism. The dust removal mechanism is arranged at the upper end in the box body, the spiral air guide pipe is arranged in the waste heat utilization box, and the locking mechanism is arranged on the front side of the box door and the front side of the box body. Compared with the prior art, the cleaning device has the advantages that the first scraping-out mechanism is arranged, smoke dust adhered to the two side walls and the bottom in the box body can be scraped out by pulling the first handle to be matched with the first scraping plate and the second scraping plate, dust on the rear wall in the box body can be scraped away by pulling the second handle to be matched with the third scraping plate, and the cleaning efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas waste heat recovery and utilization, and specifically refers to a boiler flue gas waste heat recovery and utilization device. Background Art

[0002] The heat pipe waste heat recovery device is a special equipment for coal-fired, oil-fired and gas-fired boilers. It is installed at the boiler smoke outlet to recover the waste heat of flue gas to heat domestic water or boiler make-up water.

[0003] Publication No. CN211781186U describes an industrial boiler flue gas waste heat recovery and utilization device. The filter plate is convenient for filtering dust from the flue gas to prevent dust from polluting the air. Then the T-shaped rod in the dust cleaning structure is pulled, and the T-shaped rod drives the scraper to move. The scraper moves to scrape the dust adhered to the bottom of the filter plate, thereby ensuring the filtering performance of the filter plate. In addition, the ash receiving frame in the ash collecting structure is used to collect the scraped dust. The ash blocking hopper prevents the dust from entering the intubation tube. The intubation tube is plugged into the air intake pipe, so that the ash collecting structure is convenient for loading and unloading on the air intake pipe, and the dust in the ash receiving frame is convenient for cleaning. However, the prior art still has defects:

[0004] 1. Since the water flow in the vortex tube is always in a state of continuous flow, although the waste heat of the flue gas can heat the vortex tube, the water flows through a short time, the heating time is also short, and the efficiency of waste heat utilization is low.

[0005] 2. The prior art has multiple bolts to fix the cover plate, which is not convenient for disassembly to remove the internal ash receiving frame. The scraper can only scrape out the filter plate to clean the ash. During the stay of the flue gas in the box, a large number of dust particles inside the box will adhere to the side wall inside the box. After long-term use, the side wall needs to be cleaned. Utility Model Content

[0006] The technical problem to be solved by the utility model is to solve the above-mentioned problem and provide a boiler flue gas waste heat recovery and utilization device.

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a boiler flue gas waste heat recovery and utilization device, comprising:

[0008] A box body, wherein both sides of the lower part of the box body are fixedly connected with a supporting base;

[0009] A box door, which is arranged on the front side of the box body;

[0010] A first scraping mechanism, wherein the first scraping mechanism is arranged at the lower side of the interior of the box;

[0011] a second scraping mechanism, the second scraping mechanism being arranged on an upper portion of the first scraping mechanism;

[0012] An air intake pipe, the air intake pipe is plugged into the middle of the bottom of the box;

[0013] A dust removal mechanism, wherein the dust removal mechanism is arranged at the upper end of the interior of the box;

[0014] A waste heat utilization box, wherein the waste heat utilization box is fixedly connected to the upper part of the box body;

[0015] A spiral air guide pipe, wherein the spiral air guide pipe is arranged inside the waste heat utilization box, the lower end of the spiral air guide pipe passes through the bottom of the waste heat utilization box and the upper part of the box body, and the upper end of the spiral air guide pipe passes through the upper end of the waste heat utilization box;

[0016] A water inlet pipe, the water inlet pipe is plugged into an upper portion of one side of the waste heat utilization box;

[0017] A water outlet pipe, the water outlet pipe is plugged into the lower part of the other side of the waste heat utilization box;

[0018] The locking mechanism is arranged on the box door and the front side of the box body, including a hinge, a mounting plate 1, a support plate 1, a fixing ring, a clamping rod, a clamping block 1, a clamping block 2, a spring, a lever, a mounting plate 2, and a supporting plate 2, the hinge is arranged between the upper and lower ends of one side of the box door and the box body, the mounting plate 1 is fixedly connected to the middle of the other side of the box door, the supporting plate 1 is fixedly connected to the upper end of the mounting plate 1, and a through hole 1 is provided in the middle, the fixing ring is fixedly connected to the two ends of the front side of the mounting plate 1, the clamping rod is penetrated between the fixing rings on both sides, the clamping block 1 is fixedly connected to one end of the clamping rod, the clamping block 2 is arranged in the middle of the clamping rod, the spring is sleeved on the outside of the clamping rod and clamped between the clamping block 2 and the fixing ring, the lever is fixedly connected to the upper end of the fixing ring and passes through the through hole 1, the mounting plate 2 is fixedly connected to the middle of the front side of the box body near the mounting plate 1, the supporting plate 2 is fixedly connected to one end of the front side of the mounting plate 2 and a through hole 2 is provided in the middle, and one end of the clamping rod passes through the through hole 2;

[0019] A valve is arranged in the middle of the water outlet pipe.

[0020] As an improvement, the first scraping mechanism comprises:

[0021] A fixing plate, the fixing plate being fixedly connected to the front and rear ends of the lower parts of the two inner walls of the box body;

[0022] A slide bar, the slide bar being fixedly connected between the front and rear fixing plates;

[0023] The sliding sleeve is sleeved on the rear end of the sliding rod.

[0024] As an improvement, a connecting rod is fixedly connected between the sliding sleeves, two connecting blocks are arranged at the lower part of the connecting rod, scraper 1 is fixedly connected to the lower end of the connecting block, scraper 2 is fixedly connected to both ends of scraper 1, and a handle 1 is arranged at the front end of the connecting rod.

[0025] As an improvement, the second scraping mechanism comprises:

[0026] A limiting groove, the limiting groove is provided on the second opposite side of the scraper;

[0027] Scraper three, the scraper three is arranged between the scraper two;

[0028] Limit blocks, which are arranged at two ends of the scraper and clamped in the limit groove;

[0029] Handle 2, wherein the handle 2 is arranged in the middle of the front side of the scraper 3.

[0030] As an improvement, the dust removal mechanism comprises:

[0031] A slot, the slot being opened at an upper end of one side of the box body;

[0032] A baffle, the baffle being arranged at the front and rear ends of the upper side of the interior of the box;

[0033] A filter plate, which is inserted into the slot and snap-fitted onto the upper end of the baffle;

[0034] Handle three, the handle three is arranged on one side of the filter plate.

[0035] Compared with the prior art, the advantages of the utility model are as follows: 1. The utility model arranges a waste heat utilization box at the upper end of the box body, and an inlet pipe is arranged at the upper end of one side of the box body to put cold water into the box. A spiral air duct is arranged in the box, and the lower end of the spiral air duct extends to the inside of the box body, and the upper end extends to the outside of the waste heat utilization box, so that the filtered flue gas is discharged to the outside through the spiral air duct, and the continuous waste heat of the flue gas can heat the cold water stored in the waste heat utilization box to a predetermined temperature through the spiral air duct and then discharge it through the water outlet pipe, which greatly improves the waste heat utilization efficiency.

[0036] 2. The utility model is provided with a locking mechanism so that the lever can be pulled to control the card rod to slide left and right in the fixed ring. When closing the box door, the card rod is retracted by pushing the lever to one side. After closing the box door, the lever is released. Under the cooperation of the spring and the card block 2, the card rod is quickly reset and connected into the second through hole of the support plate 2 to fix the box door. When opening the box door again, the lever only needs to be pushed again to make the card rod withdraw from the second through hole to open the box door, which is convenient for cleaning the inside of the box and replacing accessories.

[0037] 3. The utility model is provided with a first scraping mechanism, which can scrape out the smoke dust adhering to the two side walls and the bottom of the box by pulling the handle 1 in cooperation with the scraper 1 and the scraper 2, and can scrape off the dust on the rear wall inside the box by pulling the handle 2 up and down in cooperation with the scraper 3, thereby greatly improving the cleaning efficiency. At the same time, the dust removal mechanism is provided to quickly install and disassemble the filter plate, making it convenient to clean and replace the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The utility model is a three-dimensional schematic diagram of a boiler flue gas waste heat recovery and utilization device.

[0039] Figure 2 The utility model is a structural schematic diagram of a boiler flue gas waste heat recovery and utilization device.

[0040] Figure 3 The utility model discloses a first scraping mechanism and a second scraping mechanism structure diagram of a boiler flue gas waste heat recovery and utilization device.

[0041] Figure 4 The utility model discloses a locking mechanism structure diagram of a boiler flue gas waste heat recovery and utilization device.

[0042] Figure 5 It is a schematic diagram of the main cross section of a boiler flue gas waste heat recovery and utilization device of the utility model.

[0043] Figure 6 It is an enlarged view of A of a boiler flue gas waste heat recovery and utilization device of the utility model.

[0044] As shown in the figure: 1. Box body; 2. Support base; 3. Box door; 4. First scraping mechanism; 4.1. Fixed plate; 4.2. Sliding rod; 4.3. Sliding sleeve; 4.4. Connecting rod; 4.5. Connecting block; 4.6. Scraper 1; 4.7. Scraper 2; 4.8. Handle 1; 5. Second scraping mechanism; 5.1. Limiting groove; 5.2. Scraper 3; 5.3. Limiting block; 5.4. Handle 2; 6. Air inlet pipe; 7. Dust removal mechanism; 7.1. Slot; 7.2. Baffle; 7.3, filter plate; 7.4, handle three; 8, waste heat utilization box; 9, spiral air guide tube; 10, water inlet pipe; 11, water outlet pipe; 12, locking mechanism; 12.1, hinge; 12.2, mounting plate one; 12.3, support plate one; 12.4, fixing ring; 12.5, clamping rod; 12.6, clamping block one; 12.7, clamping block two; 12.8, spring; 12.9, lever; 12.10, mounting plate two; 12.11, support plate two; 13, valve. DETAILED DESCRIPTION

[0045] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0046] Combined with Figure 1 The utility model is provided with a box body 1, and support bases 2 are fixedly connected to both sides of the lower part of the box body 1, which is used to be installed on the upper part of the boiler. An air intake pipe 6 is inserted in the middle of the bottom of the box body 1, and the air intake pipe 6 is connected to the smoke exhaust pipe at the upper end of the boiler. A box door 3 is provided at the front of the box body 1.

[0047] Combined with Figure 4The box door 3 and the front side of the box body 1 are provided with a locking mechanism 12, including a hinge 12.1, a mounting plate 12.2, a support plate 12.3, a fixing ring 12.4, a clamping rod 12.5, a clamping block 12.6, a clamping block 2 12.7, a spring 12.8, a lever 12.9, a mounting plate 2 12.10, and a support plate 2 12.11. A hinge 12.1 is provided at the upper and lower ends between one side of the box door 3 and the box body 1, and a mounting plate 12.2 is provided in the middle of the other side of the box door 3. The upper end of the mounting plate 12.2 is fixedly connected with a support A support plate 12.3 is provided with a long through hole 1 in the middle, and both ends of the front side of the mounting plate 12.2 are fixedly connected with fixing rings 12.4, a clamping rod 12.5 is arranged between the fixing rings 12.4 on both sides, one end of the clamping rod 12.5 is fixedly connected with a clamping block 12.6, and a clamping block 2 12.7 is arranged in the middle of the clamping rod 12.5, a spring 12.8 is sleeved on the outside of the clamping rod 12.5 and clamped between the clamping block 2 12.7 and the fixing ring 12.4, and a shifting rod 12.9 is fixedly connected to the upper end of the fixing ring 12.4 and passes through the through hole 1.

[0048] A mounting plate 2 12.10 is fixedly connected in the middle of one side of the front part of the box body 1 near the mounting plate 1 12.2. A supporting plate 2 12.11 is fixedly connected to one end of the front side of the mounting plate 2 12.10 and a through hole 2 is opened in the middle. One end of the card rod 12.5 passes through the through hole 2. Pulling the lever 12.9 can control the card rod 12.5 to slide left and right in the fixing ring 12.4. When closing the box door 3, the card rod 12.5 is driven to be recovered by shifting the lever 12.9 to one side. After the box door 3 is closed, the lever 12.9 is released. Under the cooperation of the spring 12.8 and the card block 2 12.7, the card rod 12.5 is quickly reset and connected to the through hole 2 of the supporting plate 2 12.11 to fix the box door 3. When opening the box door 3 again, it is only necessary to shift the lever 12.9 again to make the card rod 12.5 exit the through hole 2 to open the box door 3, so as to facilitate cleaning and inspection of the inside of the box body 1.

[0049] Combined with Figure 2 With attached Figure 3The utility model is provided with a first scraping mechanism 4 at the lower side of the box body 1, including a fixed plate 4.1, a slide rod 4.2, a sliding sleeve 4.3, a connecting rod 4.4, a connecting block 4.5, a scraper 1 4.6, a scraper 2 4.7, and a handle 1 4.8. The front and rear ends of the lower inner walls of the box body 1 are fixedly connected with a fixed plate 4.1, a slide rod 4.2 is fixedly connected between the front and rear fixed plates 4.1, a slide sleeve 4.3 is sleeved at the rear end of the slide rod 4.2, a connecting rod 4.4 is fixedly connected between the slide sleeves 4.3, and two connecting rods 4.4 are provided at the lower part of the connecting rod 4.4. A connecting block 4.5 is fixedly connected to a scraper 1 4.6 at the lower end of the connecting block 4.5, and the scraper 1 4.6 contacts the bottom end of the box body 1. Scraper 2 4.7 are fixedly connected to both ends of the scraper 1 4.6, and the scraper 2 4.7 contacts the two side walls inside the box body 1. A handle 1 4.8 is provided at the front end of the connecting rod 4.5. By pulling the handle 1 4.8, the sliding sleeve 4.3 slides along the sliding rod 4.2, thereby driving the scraper 1 4.6 and the scraper 2 4.7 to move back and forth to scrape off the smoke particles adsorbed and adhered to the side walls and the bottom of the box body 1.

[0050] A second scraping mechanism 5 is provided on the upper part of the first scraping mechanism 4, comprising a limiting groove 5.1, a scraper three 5.2, a limiting block 5.3, and a handle two 5.4. The limiting groove 5.1 is provided on the side opposite to the scraper two 4.7, and a scraper three 5.2 is provided between the scrapers two 4.7. The scraper three 5.2 contacts the inner rear wall of the box body 1, and the two ends of the scraper three 5.2 are fixedly connected to the limiting blocks 5.3 and clamped in the limiting groove 5.1. The middle of the front side of the scraper three 5.2 is fixedly connected to the handle two 5.4. The scraper three 5.2 is driven to move up and down by pulling the handle two 5.4 to scrape the smoke and dust particles remaining on the inner rear wall of the box body 1.

[0051] Combined with Figure 2 A dust removal mechanism 7 is provided at the upper end of the interior of the box body 1, including a slot 7.1, a baffle 7.2, a filter plate 7.3, and a handle three 7.4. A slot 7.1 is provided at the upper end of one side of the box body 1, and baffles 7.2 are fixedly connected to the front and rear ends of the upper side of the interior of the box body 1. The two baffles 7.2 are respectively close to the two ends of the slot 7.1. The filter plate 7.3 is inserted from the slot 7.1 and clamped on the upper end of the baffle 7.2. The filter plate 7.3 is composed of materials such as activated carbon and adsorption cotton, which can adsorb dust particles in the flue gas. The handle three 7.4 is provided on one side of the filter plate 7.3, which is convenient for pulling the filter plate 7.3 for installation and removal.

[0052] Combined with Figure 5A waste heat utilization box 8 is arranged on the upper part of the box body 1, and a spiral air duct 9 is arranged inside the waste heat utilization box 8. The spiral air duct 9 is made of stainless steel with good thermal conductivity. The lower end thereof passes through the bottom of the waste heat utilization box 8 and the upper part of the box body 1, and the upper end passes through the upper end of the waste heat utilization box 8. The filtered flue gas will float upward and be discharged to the outside through the spiral air duct 9. A water inlet pipe 10 is plugged into the upper part of one side of the waste heat utilization box 8 for injecting cold water into the box, and a water outlet pipe 11 is plugged into the lower part of the other side of the waste heat utilization box 8. A valve 13 is arranged in the middle of the water outlet pipe 11 for controlling the water outlet. The continuous waste heat of the flue gas can heat the stored cold water to a predetermined temperature through the spiral air duct 9 and then be discharged through the water outlet pipe 11, which greatly improves the waste heat utilization efficiency.

[0053] When the utility model is implemented, Figure 1 As shown, the equipment is installed on the upper part of the boiler through the supporting base 2, so that the air inlet pipe 6 is connected to the boiler. When the boiler is in production, the smoke enters the box body 1 through the air inlet pipe 6 and floats upward. After being filtered by the filter plate 7.3, the unpolluted smoke enters the spiral air guide pipe 9, and the waste heat is used to heat the cold water stored in the waste heat utilization box 8. After heating to a predetermined temperature, the valve 13 is opened to discharge the hot water through the water outlet pipe 11, and then the smoke is discharged to the outside from the upper end of the spiral air guide pipe 9. After the production is completed, the lever 12.9 is pulled to open the box door 3 through the locking mechanism 12, and the handle 1 4.8 is pulled to drive the scraper 1 4.6 and the scraper 2 4.7 to move forward and backward to scrape off the smoke particles adsorbed and adhered to the side wall and the bottom of the box body 1, and the handle 2 5.4 is pulled to drive the scraper 3 5.2 to move up and down to scrape off the smoke particles remaining on the rear wall of the box body 1, and the handle 3 7.4 is pulled to take out the filter plate 7.3 for cleaning and replacement.

[0054] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0055] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A boiler flue gas waste heat recovery and utilization device, characterized in that: include: A box body (1), wherein two sides of the lower part of the box body (1) are fixedly connected to a support base (2); A box door (3), wherein the box door (3) is arranged on the front side of the box body (1); A first scraping mechanism (4), the first scraping mechanism (4) being arranged on the lower side of the interior of the box body (1); A second scraping mechanism (5), wherein the second scraping mechanism (5) is arranged on the upper part of the first scraping mechanism (4); An air intake pipe (6), the air intake pipe (6) being plugged into the middle of the bottom of the box body (1); A dust removal mechanism (7), wherein the dust removal mechanism (7) is arranged at the upper end of the interior of the box body (1); A waste heat utilization box (8), wherein the waste heat utilization box (8) is fixedly connected to the upper part of the box body (1); A spiral air guide pipe (9), the spiral air guide pipe (9) being arranged inside the waste heat utilization box (8), the lower end of the spiral air guide pipe (9) penetrating the bottom of the waste heat utilization box (8) and the upper part of the box body (1), and the upper end of the spiral air guide pipe (9) penetrating the upper end of the waste heat utilization box (8); A water inlet pipe (10), the water inlet pipe (10) being plugged into an upper portion of one side of the waste heat utilization box (8); A water outlet pipe (11), the water outlet pipe (11) being plugged into the lower portion of the other side of the waste heat utilization box (8); A locking mechanism (12), the locking mechanism (12) being arranged on the front side of the box door (3) and the box body (1), comprising a hinge (12.1), a mounting plate (12.2), a support plate (12.3), a fixing ring (12.4), a clamping rod (12.5), a clamping block (12.6), a clamping block (12.7), a spring (12.8), a lever (12.9), a mounting plate (12.10), and a support plate (12.11), the hinge (12.1) being arranged at the upper and lower ends between one side of the box door (3) and the box body (1), the mounting plate (12.2) being fixedly connected to the middle of the other side of the box door (3), the support plate (12.3) being fixedly connected to the upper end of the mounting plate (12.2), and a through hole (1) being provided in the middle, the fixing ring (12.4) being fixedly connected to the mounting plate (12. .2) at both ends of the front side, the clamping rod (12.5) is inserted between the fixing rings (12.4) on both sides, the clamping block 1 (12.6) is fixedly connected to one end of the clamping rod (12.5), the clamping block 2 (12.7) is arranged in the middle of the clamping rod (12.5), the spring (12.8) is sleeved on the outside of the clamping rod (12.5) and clamped between the clamping block 2 (12.7) and the fixing ring (12.4), the shifting rod (12.9) is fixedly connected to the upper end of the fixing ring (12.4) and passes through the through hole 1, the mounting plate 2 (12.10) is fixedly connected to the middle of the front part of the box body (1) close to the mounting plate 1 (12.2), the support plate 2 (12.11) is fixedly connected to one end of the front side of the mounting plate 2 (12.10) and a through hole 2 is opened in the middle, and one end of the clamping rod (12.5) passes through the through hole 2; A valve (13), wherein the valve (13) is arranged in the middle of the water outlet pipe (11).

2. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: The first scraping mechanism (4) comprises: A fixing plate (4.1), the fixing plate (4.1) being fixedly connected to the front and rear ends of the lower parts of the two inner walls of the box body (1); A sliding rod (4.2), wherein the sliding rod (4.2) is fixedly connected between the front and rear fixing plates (4.1); A sliding sleeve (4.3) is sleeved on the rear end of the sliding rod (4.2).

3. The boiler flue gas waste heat recovery device according to claim 2 is characterized in that: A connecting rod (4.4) is fixedly connected between the sliding sleeves (4.3), two connecting blocks (4.5) are arranged at the lower part of the connecting rod (4.4), a scraper plate 1 (4.6) is fixedly connected to the lower end of the connecting block (4.5), and scraper plate 2 (4.7) is fixedly connected to both ends of the scraper plate 1 (4.6), and a handle 1 (4.8) is arranged at the front end of the connecting rod (4.4).

4. A boiler flue gas waste heat recovery device according to claim 1 or claim 3, characterized in that: The second scraping mechanism (5) comprises: A limiting groove (5.1), wherein the limiting groove (5.1) is provided on a side opposite to the second scraper (4.7); Scraper three (5.2), the scraper three (5.2) is arranged between scraper two (4.7); Limit blocks (5.3), the limit blocks (5.3) are arranged at both ends of the scraper blade (5.2) and are clamped inside the limit groove (5.1); Handle 2 (5.4), the handle 2 (5.4) is arranged in the middle of the front side of the scraper 3 (5.2).

5. The boiler flue gas waste heat recovery device according to claim 1, characterized in that: The dust removal mechanism (7) comprises: A slot (7.1), wherein the slot (7.1) is provided at an upper end of one side of the box body (1); A baffle (7.2), the baffle (7.2) being arranged at the front and rear ends of the upper side of the interior of the box body (1); A filter plate (7.3), the filter plate (7.3) being inserted into the slot (7.1) and snap-fitted to the upper end of the baffle plate (7.2); Handle three (7.4), the handle three (7.4) is arranged on one side of the filter plate (7.3).

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