Boiler feed water cascade heating energy-saving device

Abstract

The utility model relates to the technical field of boilers, and discloses a boiler feed water cascade heating energy-saving device which comprises a deaerator body, a pre-filter is fixed to a water inlet of the deaerator body, a blow-off pipe is arranged at the bottom end of the pre-filter, the bottom end of the blow-off pipe is communicated with a recycling bin, and the recycling bin is communicated with a water inlet of the deaerator body. A water outlet is formed in the bottom end of the recycling box; the front filter comprises filter screens, the two filter screens are arranged in the front filter, fixing blocks are arranged at the front end and the rear end of each filter screen, the fixing blocks are fixedly connected with the interior of the front filter, and a fixing rod is fixed between the two fixing blocks. The two filter screens in the prefilter are used for filtering impurities in water, and meanwhile, the filtered impurities fall into the recycling box through the blow-off pipe to be cleaned, so that the problems that a traditional filter is relatively low in treatment efficiency, needs to consume more energy and is relatively tedious and complicated to clean are solved.

Description

Technical Field

[0001] This utility model application relates to the field of boiler technology, specifically to a boiler feedwater cascade heating energy-saving device. Background Technology

[0002] A boiler is a closed pressure vessel that uses fuel combustion or other energy sources to heat water and convert it into steam or hot water. It is widely used in industrial production and domestic heating. Its core function is to heat water to the required temperature and pressure through heat exchange to meet the energy needs of power generation, heating, chemical industry and other fields. A boiler mainly consists of a drum, furnace, burner, heat exchange surface and auxiliary systems. According to its use, it can be divided into power plant boilers, industrial boilers and domestic boilers; according to its structure, it can be divided into fire tube boilers and water tube boilers. Modern boilers focus on high efficiency, energy saving and environmental protection, and adopt advanced combustion technology and exhaust gas treatment systems to reduce pollutant emissions and improve thermal efficiency.

[0003] Currently, boilers use deaerators to treat water before supplying it to the boiler. When the water contains impurities, it will affect the working efficiency of the deaerator. The traditional treatment method is to filter the impurities in the water through filters. This method is often inefficient, and the filters require additional energy to operate. Moreover, replacing and cleaning the filters is cumbersome and complicated. Summary of the Invention

[0004] To address the problems of low processing efficiency, high energy consumption, and cumbersome cleaning associated with traditional filters, this invention provides a boiler feedwater cascade heating energy-saving device to solve these issues.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A boiler feedwater cascade heating energy-saving device includes a deaerator body. A pre-filter is fixed at the inlet of the deaerator body. A drain pipe is provided at the bottom of the pre-filter, and a recovery box is connected to the bottom of the drain pipe. A drain outlet is provided at the bottom of the recovery box. The pre-filter includes filter screens. Two filter screens are provided inside the pre-filter. Each filter screen has a fixing block at both ends. The fixing block is fixedly connected to the inside of the pre-filter. A fixing rod is fixed between the two fixing blocks. The filter screen is slidably connected to the fixing rod. A fixing spring is sleeved on the fixing rod. The fixing spring is located on the side of the filter screen away from the drain pipe.

[0007] Furthermore, the recycling bin includes a filter plate, and a fixing groove that matches the shape of the filter plate is provided inside the recycling bin. A sealing plate is provided at the front end of the recycling bin, and a rotating rod is rotatably connected below the sealing plate. The rotating rod is fixedly connected to the recycling bin, and a limiting device is fixedly connected above the sealing plate to the recycling bin.

[0008] Furthermore, the mesh count of the filter screen closer to the deaerator body is greater than that of the filter screen farther away from the deaerator body, and the mesh count of the filter screen closer to the deaerator body is the same as that of the filter plate.

[0009] Furthermore, the top surface of the filter plate has an inclined surface facing the sealing plate, and the width of the filter plate is the same as the width of the inside of the recycling bin.

[0010] Furthermore, the limiting device includes limiting blocks, with two limiting blocks symmetrically arranged on both sides above the sealing plate. Each limiting block is fixedly connected to the recycling bin, and a limiting rod is slidably inserted through the limiting block and the sealing plate.

[0011] Furthermore, the sealing plate has sealing rubber on all four sides at one end near the recycling bin, and both the limiting block and the sealing plate have sliding holes with the same radius as the limiting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, a pre-filter is installed at the water inlet of the deaerator body, and impurities in the water are filtered through two filter screens inside the pre-filter. At the same time, the filtered impurities fall into the recycling tank through the sewage pipe for cleaning, which solves the problems of low processing efficiency, high energy consumption and complicated cleaning of traditional filters.

[0014] 2. In this utility model, a filter plate is installed inside the recycling bin so that impurities fall into the recycling bin and are filtered out by the filter plate. When the filter plate needs to be cleaned, the limit rod is pulled out to release the seal of the sealing plate. At this time, the staff can open the sealing plate, pull out the filter plate and clean the impurities on the filter plate, making it more convenient and faster for the staff to clean the inside of the recycling bin. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram according to an embodiment of the present application;

[0017] Figure 2 yes Figure 1 The diagram shown is a three-dimensional representation of the left-side structure after opening in the embodiment shown.

[0018] Figure 3 yes Figure 1 The diagram shown is a three-dimensional representation of the right-side structure after opening in the embodiment shown.

[0019] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of partial structure A in the embodiment shown.

[0020] The meanings of the labels in the attached diagram are as follows: 1. Deaerator body; 2. Pre-filter; 21. Filter screen; 22. Fixing block; 23. Fixing rod; 24. Fixing spring; 3. Drain pipe; 4. Recovery box; 41. Filter plate; 42. Sealing plate; 43. Rotating rod; 44. Limiting block; 45. Limiting rod; 5. Drain outlet. Detailed Implementation

[0021] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A boiler feedwater cascade heating energy-saving device includes a deaerator body 1. A pre-filter 2 is fixed at the inlet of the deaerator body 1. A drain pipe 3 is opened at the bottom of the pre-filter 2. The bottom of the drain pipe 3 is connected to a recovery box 4. A drain outlet 5 is opened at the bottom of the recovery box 4. The pre-filter 2 includes a filter screen 21. Two filter screens 21 are installed inside the pre-filter 2. Each filter screen 21 has a fixing block 22 at both ends. The fixing block 22 is fixedly connected to the inside of the pre-filter 2. A fixing rod 23 is fixed between the two fixing blocks 22. The filter screen 21 is slidably connected to the fixing rod 23. A fixing spring 24 is sleeved on the fixing rod 23. The fixing spring 24 is located on the side of the filter screen 21 away from the drain pipe 3, so that the pre-filter 2 filters the water entering the deaerator body 1.

[0023] Specifically, the mesh size of the filter screen 21 closer to the deaerator body 1 is greater than that of the filter screen 21 farther away from the deaerator body 1. The mesh size of the filter screen 21 closer to the deaerator body 1 is the same as that of the filter plate 41, thereby improving the filtration efficiency of the filter screen 21.

[0024] As an optimization solution, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the recycling bin 4 includes a filter plate 41. The inside of the recycling bin 4 is provided with a fixing groove that matches the shape of the filter plate 41. A sealing plate 42 is provided at the front end of the recycling bin 4. A rotating rod 43 is rotatably connected below the sealing plate 42. The rotating rod 43 is fixedly connected to the recycling bin 4. The upper part of the sealing plate 42 is fixedly connected to the recycling bin 4 through a limiting device, so that the recycling bin 4 can recycle the filtered impurities.

[0025] Specifically, the top surface of the filter plate 41 has an inclined surface facing the sealing plate 42. The width of the filter plate 41 is the same as the width inside the recycling bin 4. The limiting device includes a limiting block 44. Two limiting blocks 44 are symmetrically arranged on both sides above the sealing plate 42. Each limiting block 44 is fixedly connected to the recycling bin 4. A limiting rod 45 is slidably inserted through the limiting block 44 and the sealing plate 42. Sealing rubber is provided on all four sides of the end of the sealing plate 42 near the recycling bin 4. Sliding holes with the same radius as the limiting rod 45 are opened inside the limiting block 44 and the sealing plate 42 to facilitate the cleaning of the filter plate 41 by the staff.

[0026] Working principle: When water flows through the pre-filter 2 into the deaerator body 1, the two filter screens 21 with different mesh sizes perform staged filtration of the water flow, improving the filtration efficiency of the pre-filter 2. Simultaneously, as the water flow impacts the filter screens 21, they move towards the deaerator body 1, compressing the fixing spring 24. When the water flow stops, the fixing spring 24 pushes the filter screens 21 back to their original position, causing them to push the filtered impurities into the drain pipe 3 and then into the recovery tank 4. Meanwhile, the impurities fall into the filter... When the filter plate 41 is in use, the water is filtered out through the filter plate 41 and discharged through the drain outlet 5 for recycling. When the impurities on the filter plate 41 need to be cleaned, the limiting rod 45 is pulled out, which releases the fixing of the limiting rod 45 to the sealing plate 42 and the limiting block 44. At this time, the staff can open the sealing plate 42 and pull out the filter plate 41 for cleaning. After cleaning, the filter plate 41 is reinserted into the recycling box 4 and the sealing plate 42 is closed. The limiting rod 45 then passes through the limiting block 44 and the sealing plate 42, so that the sealing plate 42 is fixedly connected to the limiting block 44 through the limiting rod 45.

[0027] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A boiler feedwater cascade heating energy-saving device, comprising a deaerator body (1), characterized in that: The deaerator body (1) has a pre-filter (2) fixed at the water inlet. The pre-filter (2) has a drain pipe (3) at the bottom. The drain pipe (3) is connected to a recycling box (4) at the bottom. The recycling box (4) has a drain outlet (5) at the bottom. The pre-filter (2) includes a filter screen (21). The pre-filter (2) has two filter screens (21) inside. Each filter screen (21) has a fixing block (22) at both ends. The fixing block (22) is fixedly connected to the inside of the pre-filter (2). A fixing rod (23) is fixed between the two fixing blocks (22). The filter screen (21) is slidably connected to the fixing rod (23). A fixing spring (24) is sleeved on the fixing rod (23). The fixing spring (24) is located on the side of the filter screen (21) away from the drain pipe (3).

2. The boiler feedwater cascade heating energy-saving device according to claim 1, characterized in that: The recycling bin (4) includes a filter plate (41). The inside of the recycling bin (4) is provided with a fixing groove that matches the shape of the filter plate (41). A sealing plate (42) is provided at the front end of the recycling bin (4). A rotating rod (43) is rotatably connected below the sealing plate (42). The rotating rod (43) is fixedly connected to the recycling bin (4). The upper part of the sealing plate (42) is fixedly connected to the recycling bin (4) through a limiting device.

3. The boiler feedwater cascade heating energy-saving device according to claim 1, characterized in that: The mesh count of the filter screen (21) closer to the deaerator body (1) is greater than that of the filter screen (21) farther away from the deaerator body (1), and the mesh count of the filter screen (21) closer to the deaerator body (1) is the same as that of the filter plate (41).

4. The boiler feedwater cascade heating energy-saving device according to claim 2, characterized in that: The filter plate (41) has an inclined surface on its top surface that faces the sealing plate (42), and the width of the filter plate (41) is the same as the width inside the recycling box (4).

5. The boiler feedwater cascade heating energy-saving device according to claim 2, characterized in that: The limiting device includes a limiting block (44). Two limiting blocks (44) are symmetrically arranged on both sides above the sealing plate (42). Each limiting block (44) is fixedly connected to the recycling bin (4). A limiting rod (45) is slidably inserted through the limiting block (44) and the sealing plate (42).

6. The boiler feedwater cascade heating energy-saving device according to claim 5, characterized in that: The sealing plate (42) has sealing rubber on all four sides at one end near the recycling box (4), and the limiting block (44) and the sealing plate (42) both have sliding holes with the same radius as the limiting rod (45).

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