Condensate water recovery system for flue gas waste heat recovery equipment of gas-fired boiler

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to a condensate water recovery system of gas-fired boiler flue gas waste heat recovery equipment, which is a mechanism convenient for efficiently mixing liquid medicine and condensate water, so that the use efficiency and effect of a medicine adding water tank are enhanced. Comprising a supporting table, a dosing water tank and a cover plate, an automatic dosing assembly is arranged at the top end of the cover plate, the right side of the top end of the supporting table is connected with the bottom end of the dosing water tank, and the bottom end of the cover plate is connected with the top end of the dosing water tank; the mixing mechanism further comprises a servo motor, a rotating shaft, a fixing ring and a mixing piece, a working cavity is formed in the liquid medicine adding box, the bottom end of the rotating shaft is rotationally connected with the middle of the bottom end of the working cavity, the top end of the rotating shaft is rotationally connected with the middle of the bottom end of the cover plate, the mounting end of the servo motor is connected with the middle of the top end of the cover plate, and the output end of the servo motor is connected with the top end of the rotating shaft; and the fixing ring is fixedly sleeved with the rotating shaft.

Description

Technical Field

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

[0002] While absorbing the waste heat of flue gas, the gas boiler flue gas waste heat recovery device will generate a large amount of condensate. Currently, the mainstream method is to directly add alkali to the condensate and then discharge it into the sewage pipe, which is a waste of water resources. Calculated by reducing the flue gas temperature from 70°C to 40°C, for every 1 m 3 of natural gas, the flue gas waste heat recovery device of the boiler will generate about 1 KG of condensate. The main sources of condensate are the water vapor generated by combustion, the water vapor in the fuel, and the water vapor brought in by the combustion air. After testing the quality of the condensate, it is found that the pH value is on the low side, and the total iron content and hardness are on the high side. After pH adjustment, iron removal, and softening of the flue gas condensate, it can fully meet the requirements of boiler makeup water. Without considering improving the boiler efficiency, the flue gas condensate recovery system can significantly save the makeup water on the municipal side of the boiler;

[0003] When an existing condensate recovery system for a gas boiler flue gas waste heat recovery device is in use, the recovery system is an open system. The condensate generated by the boiler flue gas waste heat recovery device flows through an iron removal filter through a pipeline, and after iron removal, it enters a chemical dosing tank. The chemical dosing tank is equipped with an automatic chemical dosing device, which can adjust the pH value of the condensate. After chemical dosing, the condensate enters a storage tank for standby. The storage tank is connected to a condensate makeup water pump, which can pump the condensate to the front of the solenoid valve for boiler water makeup. After the solenoid valve for boiler water makeup is opened, the condensate finally passes through a fully automatic water softener, and the water quality reaches the requirements of boiler makeup water and enters the boiler makeup water tank for standby. If the amount of condensate in the storage tank is insufficient, the condensate makeup water pump will automatically stop, and the makeup water will continue from the municipal side;

[0004] During the use of an existing condensate recovery system for a gas boiler flue gas waste heat recovery device, it is found that the existing chemical dosing tank does not have a mixing mechanism, resulting in a poor mixing effect of the chemical solution and the condensate. Therefore, the use efficiency and effect of the chemical dosing tank are reduced, resulting in poor practicability. Content of the Utility Model

[0005] (1) Technical Problem to be Solved

[0006] Aiming at the deficiencies of the existing technology, the utility model provides a condensate recovery system for a gas boiler flue gas waste heat recovery device, which is convenient for efficiently mixing the chemical solution and the condensate, thus enhancing the use efficiency and effect of the chemical dosing tank, and further enhancing the practicability.

[0007] (2) Technical Solution

[0008] To achieve the above object, the utility model provides the following technical solutions: A condensate recovery system for a flue gas waste heat recovery device of a gas boiler, including a support platform, a chemical dosing water tank and a cover plate. An automatic chemical dosing component is arranged at the top of the cover plate. The right side of the top of the support platform is connected to the bottom end of the chemical dosing water tank, and the bottom end of the cover plate is connected to the top end of the chemical dosing water tank. A mixing mechanism is arranged inside the chemical dosing water tank, and a control mechanism is arranged on the left side of the top of the support platform;

[0009] The mixing mechanism further includes a servo motor, a rotating shaft, a fixing ring and mixing blades. A working chamber is arranged inside the chemical dosing water tank. The bottom end of the rotating shaft is rotatably connected to the middle of the bottom of the working chamber, and the top end of the rotating shaft is rotatably connected to the middle of the bottom end of the cover plate. The installation end of the servo motor is connected to the middle of the top of the cover plate, and the output end of the servo motor is connected to the top end of the rotating shaft. The fixing ring is tightly sleeved on the rotating shaft, and the left and right ends of the fixing ring are respectively connected to the corresponding mixing blades. A scraping mechanism is arranged between the mixing blades and the side wall of the working chamber.

[0010] Further, in order to facilitate the control and adjustment of the servo motor, the improvement of the utility model is that the control mechanism further includes a mounting bracket and a controller. The bottom end of the mounting bracket is connected to the left side of the top of the support platform, and the top area on the left end of the support platform is bolted to the right end of the controller. The controller is electrically connected to the servo motor.

[0011] Further, in order to facilitate the scraping and cleaning of the side wall of the chemical dosing water tank, the improvement of the utility model is that the scraping mechanism further includes a connecting plate and a brush. Multiple groups of connecting plates are connected to the corresponding mixing blades. The brush is in close contact with the side wall of the working chamber, and the brush is connected to the connecting plate through a mounting mechanism.

[0012] Further, in order to facilitate the replacement of the brush, the improvement of the utility model is that the mounting mechanism further includes a sliding plate, a pulling plate and a fixing rod. A sliding groove is arranged on one side of the connecting plate. The sliding plate is slidably clamped with the connecting plate through the sliding groove. One side of the sliding plate is connected to the corresponding brush. A clamping groove is arranged at the top end of one side of the sliding plate. A first through hole is arranged at the corresponding position of the top area of the connecting plate with respect to the clamping groove. The mounting rod is slidably sleeved with the connecting plate through the first through hole. The mounting rod is clamped with the corresponding sliding plate through the clamping groove. The left end of the mounting rod is connected to the right end of the pulling plate.

[0013] Further, in order to facilitate the reset of the fixing rod, the improvement of the utility model is that it further includes a clamping plate and an elastic block. A chamber is arranged in the middle of the mounting rod. The clamping plate is tightly sleeved on the middle of the mounting rod. The elastic block is located in the chamber and is extruded by the clamping plate.

[0014] Further, in order to facilitate the prevention of eddy currents generated during the stirring of the condensate and the chemical solution, the improvement of the utility model is that it further includes turbulence holes. Multiple groups of turbulence holes are arranged on the mixing blades.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a condensate water recovery system for a gas boiler flue gas waste heat recovery device, which has the following beneficial effects:

[0017] The condensate recovery system of the gas boiler flue gas waste heat recovery equipment uses a mixing mechanism. The controller starts the servo motor, the servo motor drives the rotating shaft to rotate, the rotating shaft drives the mixing plate to rotate, the mixing plate fully mixes the condensate and the medicine, and the scraping mechanism facilitates the scraping and cleaning of the side wall of the medicine water tank. The installation mechanism facilitates the installation and removal of the brush. The spoiler holes facilitate the prevention of eddy currents when the condensate and the medicine are stirred. A mechanism is used to facilitate the efficient mixing of the medicine and the condensate, thereby enhancing the efficiency and effect of the use of the medicine water tank, thereby enhancing the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the connection between the mixing plate and the fixing ring of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a partially enlarged cross-sectional view of A of the present utility model;

[0021] Figure 4 It is a structural schematic diagram of the right view of the utility model.

[0022] In the figure: 1. support table; 2. dosing water tank; 3. cover plate; 4. automatic dosing component; 5. servo motor; 6. rotating shaft; 7. fixing ring; 8. mixing plate; 9. working chamber; 10. mounting frame; 11. controller; 12. connecting plate; 13. brush; 14. sliding plate; 15. pulling plate; 16. fixing rod; 17. slide groove; 18. card plate; 19. elastic block; 20. chamber; 21. spoiler hole. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1-4, A condensate water recovery system for a waste heat recovery device of a gas boiler, comprising a support platform 1, a chemical dosing water tank 2 and a cover plate 3. An automatic chemical dosing assembly 4 is provided at the top of the cover plate 3. The right side of the top of the support platform 1 is connected to the bottom end of the chemical dosing water tank 2, and the bottom end of the cover plate 3 is connected to the top end of the chemical dosing water tank 2. A mixing mechanism is arranged inside the chemical dosing water tank 2, and a control mechanism is arranged on the left side of the top of the support platform 1;

[0025] The mixing mechanism further includes a servo motor 5, a rotating shaft 6, a fixing ring 7 and mixing blades 8. A working cavity 9 is arranged inside the chemical dosing water tank 2. The bottom end of the rotating shaft 6 is rotatably connected to the middle of the bottom end of the working cavity 9, and the top end of the rotating shaft 6 is rotatably connected to the middle of the bottom end of the cover plate 3. The mounting end of the servo motor 5 is connected to the middle of the top of the cover plate 3, and the output end of the servo motor 5 is connected to the top end of the rotating shaft 6. The fixing ring 7 is tightly sleeved on the rotating shaft 6. The left and right ends of the fixing ring 7 are respectively connected to the corresponding mixing blades 88, and a scraping mechanism is arranged between the mixing blades 88 and the side wall of the working cavity 99.

[0026] When this equipment is in use, the chemical dosing water tank 2, the cover plate 3, the automatic chemical dosing assembly 4 and the servo motor 5 are in the prior art field and will not be described here. By using the mixing mechanism, the controller 11 starts the servo motor 5. The servo motor 5 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the mixing blades 8 to rotate. The mixing blades 8 fully mix the condensate water and the chemical solution. By using the scraping mechanism, the mixing blades 8 drive the connecting plate 12 and the brush 13 to rotate, which is convenient for scraping and cleaning the side wall of the chemical dosing water tank 2. By using the installation mechanism, the pull plate 15 drives the fixing rod 16 to slide, and the fixing rod 16 releases the clamping of the sliding plate 14, so as to facilitate pulling out the sliding plate 14 and the brush 13, which is convenient for installing and disassembling the brush 13. The fixing rod 16 is reset by the elastic block 19 and the clamping plate 18. By using the turbulence holes 21, it is convenient to prevent the generation of eddy currents when stirring the condensate water and the chemical solution. Through a mechanism that is convenient for efficiently mixing the chemical solution and the condensate water, the use efficiency and effect of the chemical dosing water tank are enhanced, thus enhancing the practicability.

[0027] In actual use, it is found that it is not convenient to control and adjust the servo motor 5. To solve the above problems, in this embodiment, the control mechanism further includes a mounting frame 10 and a controller 11. The bottom end of the mounting frame 10 is connected to the left side of the top of the support platform 1. The top area on the left end of the support platform 1 is bolted to the right end of the controller 11. The controller 11 is electrically connected to the servo motor 5.

[0028] In actual use, it is found that it is not convenient to scrape and clean the side wall of the chemical dosing water tank 2. To solve the above problems, in this embodiment, the scraping mechanism further includes a connecting plate 12 and a brush 13. Multiple groups of connecting plates 12 are connected to the corresponding mixing blades 8. The brush 13 is in close contact with the side wall of the working cavity 9. The brush 13 is connected to the connecting plate 12 through an installation mechanism.

[0029] In actual use, it is found that it is not convenient to replace the brush 13. To solve the above problem, in this embodiment, the installation mechanism further includes a sliding plate 14, a pulling plate 15 and a fixing rod 16. A sliding groove 17 is provided on one side of the connecting plate 12. The sliding plate 14 is slidably clamped with the connecting plate 12 through the sliding groove 17. One side of the sliding plate 14 is connected to the corresponding brush 13. A clamping groove is provided at the top end of one side of the sliding plate 14. A first through hole is provided at the corresponding position of the top area of the connecting plate 12 with respect to the clamping groove. The installation rod is slidably sleeved with the connecting plate 12 through the first through hole. The installation rod is clamped with the corresponding sliding plate 14 through the clamping groove. The left end of the installation rod is connected to the right end of the pulling plate 15.

[0030] In actual use, it is found that it is not convenient to reset the fixing rod 16. To solve the above problem, in this embodiment, it further includes a clamping plate 18 and an elastic block 19. A chamber 20 is provided in the middle of the installation rod. The clamping plate 18 is tightly sleeved with the middle of the installation rod. The elastic block 19 is located in the chamber 20, and the elastic block 19 is squeezed by the clamping plate 18.

[0031] In actual use, it is found that it is not convenient to prevent eddy currents from being generated when stirring the condensed water and the potion. To solve the above problem, in this embodiment, it further includes a flow disturbing hole 21. The mixing piece 8 is provided with a plurality of flow disturbing holes 21.

[0032] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0033] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0034] Unless otherwise defined, the meanings of the technical terms used in this article are the same as those generally understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms in this article is only for describing specific embodiments and is not intended to limit the present application.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A condensate water recovery system for a gas boiler flue gas waste heat recovery device, comprising a support platform (1), a dosing water tank (2) and a cover plate (3), wherein an automatic dosing component (4) is arranged at the top of the cover plate (3), the right side of the top of the support platform (1) is connected to the bottom of the dosing water tank (2), the bottom of the cover plate (3) is connected to the top of the dosing water tank (2), a mixing mechanism is arranged in the dosing water tank (2), and a control mechanism is arranged at the left side of the top of the support platform (1); It is characterized in that The mixing mechanism further comprises a servo motor (5), a rotating shaft (6), a fixing ring (7) and a mixing sheet (8); a working chamber (9) is arranged in the dosing water tank (2); the bottom end of the rotating shaft (6) is rotatably connected to the middle of the bottom end of the working chamber (9); the top end of the rotating shaft (6) is rotatably connected to the middle of the bottom end of the cover plate (3); the mounting end of the servo motor (5) is connected to the middle of the top end of the cover plate (3); the output end of the servo motor (5) is connected to the top end of the rotating shaft (6); the fixing ring (7) is tightly fitted to the rotating shaft (6); the left and right ends of the fixing ring (7) are respectively connected to the corresponding mixing sheets (8); and a scraping mechanism is arranged between the mixing sheet (8) and the side wall of the working chamber (9).

2. A condensate water recovery system for gas boiler flue gas waste heat recovery equipment according to claim 1, characterized in that: The control mechanism also includes a mounting frame (10) and a controller (11), wherein the bottom end of the mounting frame (10) is connected to the left side of the top end of the support platform (1), the top area of ​​the left end of the support platform (1) is connected to the right end of the controller (11) by bolts, and the controller (11) is electrically connected to the servo motor (5).

3. A condensate water recovery system for gas boiler flue gas waste heat recovery equipment according to claim 2, characterized in that: The scraping mechanism also includes a connecting plate (12) and a brush (13). Multiple groups of connecting plates (12) are connected to corresponding mixing sheets (8). The brush (13) is in close contact with the side wall of the working chamber (9). The brush (13) is connected to the connecting plate (12) via a mounting mechanism.

4. A condensate water recovery system for gas boiler flue gas waste heat recovery equipment according to claim 3, characterized in that: The mounting mechanism further comprises a sliding plate (14), a pulling plate (15) and a fixing rod (16); a sliding groove (17) is provided on one side of the connecting plate (12); the sliding plate (14) is slidably clamped with the connecting plate (12) through the sliding groove (17); one side of the sliding plate (14) is connected with the corresponding brush (13); a clamping groove is provided on the top of one side of the sliding plate (14); a first through hole is provided at a position corresponding to the clamping groove in the top area of ​​the connecting plate (12); the mounting rod is slidably fitted with the connecting plate (12) through the first through hole; the mounting rod is clamped with the corresponding sliding plate (14) through the clamping groove; and the left end of the mounting rod is connected with the right end of the pulling plate (15).

5. The condensate water recovery system of a gas boiler flue gas waste heat recovery device according to claim 4, characterized in that: It also includes a clamping plate (18) and an elastic block (19). A chamber (20) is arranged in the middle of the mounting rod. The clamping plate (18) is tightly fitted to the middle of the mounting rod. The elastic block (19) is located in the chamber (20) and is squeezed by the clamping plate (18).

6. A condensate water recovery system for gas boiler flue gas waste heat recovery equipment according to claim 5, characterized in that: It also includes spoiler holes (21), and the mixing plate (8) is provided with a plurality of groups of spoiler holes (21).

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