Boiler waste heat recovery device

Abstract

The utility model belongs to the technical field of boiler instruments, and particularly relates to a boiler waste heat recovery device which comprises a tank body, a heat exchange chamber installed at the bottom end of the tank body, a guide pipe communicated with the tank body and the heat exchange chamber and a heat exchange calandria installed in the heat exchange chamber. And a linear driver is mounted on the outer wall of the front end of the heat exchange calandria. The sealing plate capable of being automatically opened is arranged at the side end of the heat exchange chamber, the sealing plate can rapidly open or close the interior of the heat exchange chamber under the action of the linear driver, heat exchange calandria in the heat exchange chamber can be conveniently maintained, and scale falling in the heat exchange chamber can be conveniently taken out; the pull handle is pulled to enable the two sets of connecting rods to drive the tray to transversely move, the scraping disc on the tray can rapidly clean scale on the surface of the heat exchange calandria in the moving process, equipment does not need to be shut down, and the using convenience of the device is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler instrument technical field especially relates to a boiler waste heat recovery device. BACKGROUND

[0002] The boiler exhaust flue gas temperature is usually high, and these high-temperature flue gas contains a large amount of heat energy, and the waste heat recovery device is mainly based on the heat transfer principle, and the heat in the flue gas is transferred to the medium needing heating, such as air, water or other working medium, through different heat exchange modes, and the existing boiler waste heat recovery device can basically meet the daily use demand, but there are still some deficiencies to be improved.

[0003] And the boiler waste heat recovery device widely used in the market adopts the tubular radiator, the boiler flue gas is introduced into the heat exchange chamber, and then the tubular radiator recovers the heat in the flue gas, but since the boiler flue gas may contain sulfur dioxide, nitrogen oxides, dust and other impurities, after long-term operation, scale is easy to form on the surface of the heat exchanger, and if the scale is not cleaned in time, the surface of the heat exchanger is easy to be corroded, and some equipment needs to be frequently stopped for cleaning and maintenance, which also increases the maintenance cost, therefore, the boiler waste heat recovery device is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research, and after a lot of creative labor, the present utility model is completed.

[0005] Specifically, the technical problem to be solved by the present utility model is to provide a boiler waste heat recovery device to solve the technical problems raised in the above background.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A boiler waste heat recovery device, comprising a tank body, a heat exchange chamber installed at the bottom end of the tank body, a conduit for communicating the tank body and the heat exchange chamber, and a heat exchange pipe installed in the heat exchange chamber, the side end of the heat exchange pipe is installed with a sealing plate, the front end outer wall of the heat exchange pipe is installed with a linear actuator, the output end of the linear actuator is connected to the sealing plate, two groups of sliding holes are formed on the sealing plate, two groups of connecting rods are arranged in the sliding holes, a tray is installed at one end of the two groups of connecting rods towards the heat exchange pipe, a scraper is installed on the tray, a pull handle is installed at one end of the two groups of connecting rods away from the heat exchange pipe, and a positioning assembly is arranged below the pull handle.

[0008] As an improved technical scheme, the positioning assembly comprises a sliding sleeve fixed outside the sealing plate and a sliding block arranged inside the sliding sleeve, the top end of the sliding block is fixed with two groups of positioning rods, the bottom end of the pull handle is provided with two groups of positioning holes, the top end of the two groups of positioning rods can be inserted into the two groups of positioning holes on the pull handle, and the bottom end outer wall of the sliding block is connected with a pressing plate through two groups of supports, and the outer wall of the two groups of supports is wound with a reset spring.

[0009] As an improved technical scheme, the input end of the linear driver is electrically connected with an external controller through wires.

[0010] As an improved technical scheme, the outer surfaces of the pull handle and the pressing plate are ground.

[0011] As an improved technical scheme, a plurality of groups of grooves are arranged at equal intervals on the scraping disc, and the top end outer wall of the scraping disc is tightly attached to the outer wall of the heat exchange pipe.

[0012] As an improved technical scheme, the reset springs are connected to the bottom end outer wall of the sliding block and the bottom end inner wall of the sliding sleeve respectively, and the sliding block is elastically connected with the sliding sleeve through the two groups of reset springs.

[0013] As an improved technical scheme, the outer wall of the sliding block is fully attached to the inner wall of the sliding sleeve, and the sliding block and the sliding sleeve are in sliding connection.

[0014] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0015] I. The sealing plate on the side end of the heat exchange chamber can be automatically opened, so that the sealing plate can be quickly opened or closed under the action of the linear driver, the heat exchange pipe in the heat exchange chamber is maintained and the scale falling in the heat exchange chamber is taken out, the tray on the sealing plate can be transversely moved, the scraping disc on the tray can clean the scale on the surface of the heat exchange pipe during movement, and the device does not need to be stopped, thereby effectively improving the convenience of the device in use.

[0016] II. The sliding block is arranged outside the sealing plate, the two groups of positioning rods on the sliding block can be quickly inserted into the two groups of positioning holes on the pull handle, the two groups of positioning rods can limit the position of the pull handle, the displacement of the pull handle and the tray in the sliding hole on the sealing plate during equipment operation is prevented, and the stability of the device in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 A schematic diagram of the first partial cross-sectional structure;

[0021] Figure 4 For the present utility model Figure 2 A schematic diagram of the second partial cross-sectional structure;

[0022] Figure 5 For the present utility model Figure 3 A magnified structural diagram at point A.

[0023] In the diagram: 1. Tank body; 2. Heat exchange chamber; 3. Guide tube; 4. Heat exchange pipe; 5. Sealing plate; 6. Linear actuator; 7. Sliding hole; 8. Connecting rod; 9. Tray; 10. Scraper; 11. Pull handle; 12. Sliding sleeve; 13. Slider; 14. Positioning rod; 15. Positioning hole; 16. Bracket; 17. Pressure plate; 18. Return spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0027] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0028] Figures 1 to 5 As shown, the present embodiment provides a boiler waste heat recovery device, which comprises a tank body 1, a heat exchange chamber 2 installed at the bottom end of the tank body 1, a conduit 3 for communicating the tank body 1 and the heat exchange chamber 2, and a heat exchange tube bank 4 installed in the heat exchange chamber 2, the heat exchange tube bank 4 is installed with a sealing plate 5 at the side end, the outer wall of the front end of the heat exchange tube bank 4 is installed with a linear actuator 6, the output end of the linear actuator 6 is connected to the sealing plate 5, two groups of slide holes 7 are opened on the sealing plate 5, the two groups of slide holes 7 are both provided with connecting rods 8, one end of the two groups of connecting rods 8 towards the heat exchange tube bank 4 is installed with a tray 9, the tray 9 is installed with a scraper 10, one end of the two groups of connecting rods 8 away from the heat exchange tube bank 4 is installed with a pull handle 11, and a positioning assembly is arranged below the pull handle 11.

[0029] By having the sealing plate 5 which can be automatically opened at the side end of the heat exchange chamber 2, the sealing plate 5 can be quickly opened or closed under the action of the linear actuator 6 to facilitate the maintenance of the heat exchange tube bank 4 in the heat exchange chamber 2 and the removal of the scaling falling in the heat exchange chamber 2, and by installing the tray 9 which can move horizontally on the sealing plate 5, pulling the pull handle 11 to make the two groups of connecting rods 8 drive the tray 9 to move horizontally, and making the scraper 10 on the tray 9 can quickly clean the scaling on the surface of the heat exchange tube bank 4 during the movement, without stopping the equipment, the convenience of the device during use is effectively improved.

[0030] In other embodiments, the positioning assembly comprises a sliding sleeve 12 fixed outside the sealing plate 5 and a sliding block 13 arranged inside the sliding sleeve 12, the top end of the sliding block 13 is fixed with two groups of positioning rods 14, the bottom end of the pull handle 11 is opened with two groups of positioning holes 15, the top end of the two groups of positioning rods 14 can be inserted into the two groups of positioning holes 15 inside the pull handle 11, the bottom end outer wall of the sliding block 13 is connected with a pressing plate 17 through two groups of supports 16, and the outer wall of the two groups of supports 16 is wound with a return spring 18;

[0031] The lifting slider 13 is installed outside the sealing plate 5, and two groups of positioning rods 14 on the lifting slider 13 can be quickly inserted into two groups of positioning holes 15 on the pull handle 11, so that the two groups of positioning rods 14 can limit the position of the pull handle 11, thereby preventing the pull handle 11 from driving the tray 9 to displace in the sliding hole 7 on the sealing plate 5 during equipment operation, and improving the stability of the device during use.

[0032] In other embodiments, the input end of the linear driver 6 is electrically connected with an external controller through a wire;

[0033] Through the design, the external controller can control the start and stop of the linear driver 6 in real time, ensuring that the linear driver 6 can drive the sealing plate 5 to move horizontally.

[0034] In other embodiments, the outer surfaces of the pull handle 11 and the pressing plate 17 are ground;

[0035] Through the design, the friction between the hand and the pull handle 11 and the pressing plate 17 can be effectively increased, thereby preventing the pull handle 11 and the pressing plate 17 from accidentally falling off during use.

[0036] As shown in Figure 4 , a plurality of grooves are evenly arranged on the scraper 10, and the top outer wall of the scraper 10 is tightly attached to the outer wall of the heat exchange tube 4;

[0037] Through the design, when the scraper 10 moves along the surface of the heat exchange tube 4 under the driving of the tray 9, the scraper 10 can drop the scale scraped from the heat exchange tube 4 into the grooves on the scraper 10 for storage, preventing the structure from scratching the surface of the heat exchange tube 4 when the scraper 10 moves along the surface of the heat exchange tube 4.

[0038] As shown in Figure 5 , the two ends of the reset spring 18 are respectively connected to the bottom outer wall of the sliding block 13 and the bottom inner wall of the sliding sleeve 12, and the sliding block 13 is elastically connected with the sliding sleeve 12 through the two groups of reset springs 18;

[0039] Through the design, the reset spring 18 outside the two groups of supports 16 can continuously exert upward elastic force on the sliding block 13, so that the sliding block 13 can drive the two groups of positioning rods 14 to be stably inserted into the two groups of positioning holes 15 on the pull handle 11.

[0040] As shown in Figure 5 , the outer wall of the sliding block 13 is fully attached to the inner wall of the sliding sleeve 12, and the sliding block 13 and the sliding sleeve 12 are in sliding connection;

[0041] Through the design, when the sliding block 13 slides up and down in the sliding sleeve 12, it can effectively prevent the sliding block 13 from shaking greatly during movement, thereby ensuring that the sliding block 13 can drive the two groups of positioning rods 14 to be stably inserted into the two groups of positioning holes 15 on the pull handle 11.

[0042] The utility model provides a boiler waste heat recovery device, concrete working principle is as follows:

[0043] When the dirt on the surface of the heat exchange pipe 4 needs to be cleaned, first, the pressing plate 17 is pressed down, the sliding block 13 is driven by the pressing plate 17 to slide down along the inside of the sliding sleeve 12, the two groups of positioning rods 14 are driven by the sliding block 13 to move down, the two groups of positioning rods 14 are separated from the two groups of positioning holes 15 on the pull handle 11, the two groups of positioning rods 14 are fixed on the pull handle 11, then the pull handle 11 can be pulled, the two groups of connecting rods 8 are driven by the pull handle 11 to slide along the two groups of sliding holes 7 on the sealing plate 5, the two groups of connecting rods 8 are driven by the tray 9 to move horizontally, the scraper 10 on the tray 9 can scrape the dirt on the surface of the heat exchange pipe 4 during the movement, when the dirt falling in the heat exchange chamber 2 needs to be cleaned, the linear drive 6 can be started, the linear drive 6 drives the sealing plate 5 to move horizontally, so that the side end of the heat exchange chamber 2 is opened, the falling dirt in the heat exchange chamber 2 can be cleaned, the scraper 10 can be cleaned and replaced, and the operation is completed.

[0044] The electrical components in the text are connected with the main controller and industrial power supply, and the main controller can be a computer or other known device for control.

[0045] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A boiler waste heat recovery device comprising a tank body (1), a heat exchange chamber (2) installed at the bottom end of the tank body (1), a conduit (3) for communicating the tank body (1) and the heat exchange chamber (2), and a heat exchange tube bank (4) installed in the heat exchange chamber (2), characterized in that: The heat exchange calandria (4) side end is provided with a sealing plate (5), the heat exchange calandria (4) front end outer wall is provided with a linear driver (6), the output end of the linear driver (6) is connected to the sealing plate (5), the sealing plate (5) is provided with two groups of sliding holes (7), two groups of the sliding holes (7) are provided with connecting rods (8), one end of two groups of the connecting rods (8) towards the heat exchange calandria (4) is provided with a tray (9), the tray (9) is provided with a scraper (10), one end of two groups of the connecting rods (8) away from the heat exchange calandria (4) is provided with a pull handle (11), the lower portion of the pull handle (11) is provided with a positioning assembly.

2. A boiler heat recovery device according to claim 1, characterised in that: The positioning assembly comprises a sliding sleeve (12) fixed outside the sealing plate (5) and a sliding block (13) arranged inside the sliding sleeve (12), the top end of the sliding block (13) is fixed with two groups of positioning rods (14), the bottom end of the pull handle (11) is provided with two groups of positioning holes (15), the top end of two groups of the positioning rods (14) can be inserted into the two groups of positioning holes (15) on the pull handle (11), the bottom end outer wall of the sliding block (13) is connected with a pressing plate (17) through two groups of supports (16), the outer wall of two groups of the supports (16) is wound with a reset spring (18).

3. A boiler heat recovery device according to claim 1, characterized in that: The input end of the linear driver (6) is electrically connected with an external controller through wires.

4. A boiler heat recovery device according to claim 1 or 2, characterised in that: The outer surfaces of the pull handle (11) and the pressing plate (17) are ground.

5. A boiler heat recovery device according to claim 1, characterized in that: A plurality of grooves are equidistantly arranged on the scraper (10), and the top end outer wall of the scraper (10) is tightly attached to the outer wall of the heat exchange calandria (4).

6. A boiler heat recovery device according to claim 2, characterised in that: The two ends of the reset spring (18) are connected to the bottom end outer wall of the sliding block (13) and the bottom end inner wall of the sliding sleeve (12), and the sliding block (13) is elastically connected with the sliding sleeve (12) through two groups of reset springs (18).

7. A boiler heat recovery device according to claim 2, characterised in that: The outer wall of the sliding block (13) is fully attached to the inner wall of the sliding sleeve (12), and the sliding block (13) is in sliding connection with the sliding sleeve (12).

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