Over-pressure discharge device of deaerator

Abstract

The utility model relates to an overpressure discharge device of a deaerator, and aims to solve the problems that when a conventional overpressure discharge device of the deaerator is used for cleaning a filtering part, the part needs to be manually disassembled and assembled, and the overpressure discharge device is in a state of stopping operation in the cleaning process; the deaerator comprises a deaerator body, a filter box is installed at the bottom of the deaerator body, two open grooves are formed in the bottom of the filter box, rubber plates are slidably connected into the two open grooves, one end of each rubber plate is fixedly connected with a filter screen plate, and the other end of each rubber plate is fixedly connected with an air inlet pipe. One end of each filter screen plate is fixedly connected with an overpressure discharge device, the other end of each filter screen plate is fixedly connected with a rubber limiting plate, and one side of the exterior of the filter box is fixedly connected with a supporting plate, so that the two filter screen plates in the filter box are automatically replaced, and the situation that the use of the overpressure discharge device is influenced when the filter screen plates are cleaned is avoided; and the convenience of cleaning the filter screen plate in the overpressure discharge device is improved.

Description

Technical Field

[0001] This utility model relates to the field of deaerators, specifically to an overpressure discharge device for deaerators. Background Technology

[0002] Deaerators are a replacement for spray packing deaerators and are one of the key pieces of equipment in boilers and heating systems. The principle of a deaerator is that the feedwater is sprayed out in a spiral shape at a certain angle through the film-forming tube to exchange heat with the heating steam to remove oxygen. The feedwater is heated to the saturation temperature corresponding to the working pressure of the deaerator, removing dissolved oxygen and other gases from the feedwater, and preventing and reducing corrosion of boiler feedwater pipes, economizers and other auxiliary equipment.

[0003] According to publicly available patent 202320278266.7, a deaerator overpressure discharge device addresses the problem that during overpressure drainage of the deaerator, the internal water easily carries a large amount of dirt directly into the water storage tank, causing the water pump to draw in dirt while simultaneously drawing in water, which can easily damage the pump. The device includes a deaerator body, a water tank, and an overpressure drainage mechanism. The overpressure drainage mechanism includes a water storage tank, a drain pipe, and a water pump. The outlet end of the drain pipe is connected to a first water passage pipe, and a filter component is installed between the end of the first water passage pipe and the water storage tank. In the process of implementing this utility model... The inventors discovered that the existing technology suffers from at least the following unresolved problems: By using a filter element, during overpressure drainage of the deaerator body, the filter cartridge prevents the drainage carrying dirt directly into the water storage tank, thus avoiding damage to internal parts caused by the pump sucking up dirt during subsequent drainage. However, traditional deaerator overpressure discharge devices require manual disassembly and reassembly of the filter element for cleaning, and the device is inactive during this process, affecting its usability. Therefore, a new technical solution is needed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a deaerator overpressure emission device to solve the technical problem that the current deaerator overpressure emission device requires manual disassembly and assembly of the filter components when cleaning, and the overpressure emission device will be in a stopped state during the cleaning process, thus affecting the use of the deaerator overpressure emission device.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A deaerator overpressure discharge device is designed, comprising a deaerator body, a filter box installed at the bottom of the deaerator body, two slots being opened at the bottom of the filter box, rubber plates being slidably connected inside the two slots, a filter screen plate being fixedly connected to one end of the rubber plate, a rubber limiting plate being fixedly connected to the other end of the filter screen plate, a support plate being fixedly connected to one side of the filter box, a servo motor being fixedly connected to the other side of the support plate, the output end of the servo motor movably penetrating the interior of the support plate and being fixedly connected to one end of a gear, the toothed end of the gear meshing with the toothed sections of two toothed plates.

[0006] Preferably, a suction pipe is sealed to one side of the filter box, and the other end of the suction pipe is sealed to the bottom of the deaerator body and communicates with its interior. A liquid guide pipe is sealed to the other side of the filter box, and the other end of the liquid guide pipe is sealed to one end of a water storage tank. A liquid extraction pipe is sealed to the other end of the water storage tank, and the other end of the liquid extraction pipe is sealed to one end of a liquid extraction pump. A three-way solenoid valve is sealed to the other end of the three-way solenoid valve, and an infusion pipe is sealed to one end of the infusion pipe. The other end of the infusion pipe is sealed to one side of the top of the deaerator body and communicates with its interior.

[0007] Preferably, the other end of the three-way solenoid valve is sealed to a first pipe, the other end of the first pipe is sealed to one end of two first solenoid valves, the other end of the first solenoid valve is sealed to one end of two second pipes, and the other end of the second pipes is sealed to multiple water spray pipes, with the second pipes located on one side of the two filter screens respectively.

[0008] Preferably, the size of the rubber plate matches the size of the slot, and the length and width of the rubber limiting plate are the same as the length and width of the slot.

[0009] Preferably, one end of each of the two toothed plates is fixedly connected to one side of the bottom of the two rubber plates, and the two toothed plates are installed alternately on both sides of the gear.

[0010] Preferably, the plurality of water spray pipes are divided into two groups and are symmetrically installed on both sides of the bottom of the filter box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] When the filter screen in the filter box needs to be cleaned, the servo motor drives the gear to rotate. At this time, the gear will drive one toothed plate to move downward and the other toothed plate to move upward, thereby realizing the automatic replacement of the two filter screens in the filter box. This avoids the filter screens being cleaned from affecting the use of the overpressure discharge device and improves the convenience of cleaning the filter screens in the overpressure discharge device.

[0013] When the filter screen needs cleaning, first close the three-way solenoid valve connected to one end of the infusion tube, then open the valve connected to the first pipeline. At this time, the pump draws water from the water tank through the suction pipe and delivers it to the inside of the first pipeline through the three-way solenoid valve. Then, it is delivered from the first pipeline to the inside of the second pipeline. Next, open the second solenoid valve corresponding to the position of the filter screen that needs cleaning, and then spray water from the spray pipe to rinse the filter material attached to the filter screen. This achieves automatic rinsing of the filter screen, saving time during cleaning and further improving the convenience of cleaning the filter screen. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 This is a bottom view of the present invention;

[0016] Figure 3 This is a top view of the filter box of this utility model;

[0017] Figure 4 This is a cross-sectional view of the filter box of this utility model;

[0018] Figure 5 This is a schematic diagram of the slotted structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the filter screen structure of this utility model.

[0020] In the diagram: 1. Deaerator body; 11. Filter box; 12. Groove; 13. Rubber plate; 14. Filter screen; 15. Rubber limiting plate; 16. Support plate; 17. Servo motor; 18. Gear; 19. Gear plate;

[0021] 2. Suction tube; 21. Liquid guide tube; 22. Water storage tank; 23. Liquid extraction tube; 24. Liquid extraction pump; 25. Three-way solenoid valve; 26. Infusion tube; 27. First pipeline; 28. Second pipeline; 29. ​​Water spray pipe; 30. First solenoid valve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Example 1: An overpressure discharge device for a deaerator, see [link to example]. Figures 1 to 6 The system includes a deaerator body 1, a filter box 11 installed at the bottom of the deaerator body 1, two slots 12 opened at the bottom of the filter box 11, and rubber plates 13 slidably connected inside the two slots 12. A filter screen plate 14 is fixedly connected to one end of the rubber plate 13, and a rubber limiting plate 15 is fixedly connected to the other end of the filter screen plate 14. The size of the rubber plate 13 matches the size of the slots 12, and the length and width of the rubber limiting plate 15 are the same as the length and width of the slots 12. When the rubber plate 13 is removed from the inside of the slot 12, the corresponding rubber limiting plate 15 will be inserted into the inside of the slot 12, thereby sealing the slot 12. When the rubber limiting plate 15 is removed from the inside of the slot 12, the corresponding rubber plate 13 will be inserted into the inside of the slot 12, thereby sealing the slot 12, so as to prevent water in the filter box 11 from continuously flowing out of the slots 12.

[0024] A support plate 16 is fixedly connected to one side of the filter box 11, and a servo motor is fixedly connected to the other side of the support plate 16. The output end of the servo motor moves through the interior of the support plate 16 and is fixedly connected to one end of the gear 18. The toothed end of the gear 18 meshes with the toothed section of two toothed plates 19. One end of the two toothed plates 19 is fixedly connected to one side of the bottom of two rubber plates 13. The two toothed plates 19 are installed alternately on both sides of the gear 18. When the filter screen 14 inside the filter box 11 needs to be cleaned, the servo motor first drives the gear. When gear 18 rotates, it drives one toothed plate 19 to move downwards and the other toothed plate 19 to move upwards, thereby automatically replacing the two filter screens 14 in the filter box 11 (during the replacement of the filter screens 14, some water will flow out of the filter box 11, and some sediment will also be carried out by the filter screens 14 in conjunction with the rubber limiting plate 15), thus avoiding the filter screens 14 from affecting the use of the overpressure discharge device when cleaning, and improving the convenience of cleaning the filter screens 14 in the overpressure discharge device.

[0025] For details, see Figures 1 to 4The other end of the three-way solenoid valve 25 is sealed and connected to a first pipe 27. The other end of the first pipe 27 is sealed and connected to one end of two first solenoid valves 30. The other end of the first solenoid valve 30 is sealed and connected to one end of two second pipes 28. The other end of the second pipes 28 is sealed and connected to multiple water spray pipes 29. The second pipes 28 are located on one side of the two filter screens 14 respectively. The multiple water spray pipes 29 are divided into two groups and are symmetrically installed on both sides of the bottom of the filter box 11. When the filter screen 14 needs to be cleaned, first close the valve of the three-way solenoid valve 25 connected to one end of the infusion pipe 26, and then open the valve connected to the first solenoid valve 27. A valve connected to a pipe 27 allows the pump 24 to draw water from the storage tank through the pumping pipe 23. The water is then transported through a three-way solenoid valve 25 to the inside of the first pipe 27, and then from the first pipe 27 to the inside of the second pipe 28. The second solenoid valve corresponding to the position of the filter screen 14 that needs to be cleaned is then opened, and water is sprayed out through the spray pipe 29 to rinse the filter material attached to the filter screen 14. This achieves automatic rinsing of the filter screen 14, saving time during cleaning and further improving the convenience of cleaning the filter screen 14.

[0026] Further, see Figure 1 As shown in the diagram, a suction pipe 2 is sealed to one side of the filter box 11, and the other end of the suction pipe 2 is sealed to the bottom of the deaerator body 1 and communicates with its interior. A liquid guide pipe 21 is sealed to the other side of the filter box 11, and the other end of the liquid guide pipe 21 is sealed to one end of the water storage tank 22. A liquid extraction pipe 23 is sealed to the other end of the water storage tank 22, and the other end of the liquid extraction pipe 23 is sealed to one end of the liquid extraction pump 24. A three-way solenoid valve 25 is sealed to the other end of the liquid extraction pump 24, and a three-way solenoid valve 25 is sealed to one end of the three-way solenoid valve 25. The infusion pipe 26 has its other end sealed and connected to one side of the top of the deaerator body 1 and communicates with its interior. When the deaerator is overpressurized and needs to be discharged, the pump 24 first draws water from the water tank 22 through the pump pipe 23 and delivers it to the interior of the deaerator body 1 through the infusion pipe 26. During this process, the water in the deaerator body 1 is delivered to the interior of the filter box 11 through the suction pipe 2, and then delivered to the interior of the water tank 22 through the guide pipe 21, thereby realizing the discharge of internal pressure of the deaerator.

[0027] It is worth noting that in the prior art, the deaerator body 1 includes an outer shell: it is usually made of a cylindrical body and a stamped elliptical head welded together, which serves to protect the internal components;

[0028] The swirl film deaerator assembly includes a water chamber, film-forming pipe, condensate inlet pipe, and makeup water inlet pipe. The film-forming pipe and drain pipe are made of stainless steel and require no maintenance during year-round operation. It is the main part of the swirl film deaerator and is responsible for 98% of the deaeration work.

[0029] Water spray grate: Used for flow reduction and secondary distribution, so that water falls evenly in a rain-like pattern, protecting the liquid vapor network;

[0030] Packing liquid-vapor mesh: It consists of intermittently spaced flat steel strips and stainless steel flat wire mesh, which allows feedwater to fully contact secondary steam, heat it to saturation temperature and perform deep deoxygenation;

[0031] Steam distribution plate: The main heating steam enters this plate. The regular and evenly distributed structure ensures the heating quality, allowing the heating steam to rise and heat the softened water without throttling, and to work at the saturation temperature for deoxygenation.

[0032] Steam-water separator: The inner mesh is made of stainless steel packing and designed with a ventilated structure, which can effectively separate and return water carried by the steam during oxygen discharge, ensuring that the discharged steam is free of water.

[0033] Water tank: It is made of a cylindrical body and a stamped elliptical head welded together. It has an internal reinforcing ring and a base fixed on a prefabricated workbench. One end is fixed and the other end is for installing an expansion roller device. The water tank is equipped with a maintenance manhole, a safety valve inlet, a drain outlet, a reboiling pipe outlet, a water seal cylinder outlet, a water level gauge interface, a pressure gauge outlet, etc.

[0034] It is worth mentioning that the servo motor, the first solenoid valve, and the three-way solenoid valve are all controlled by a PLC controller.

[0035] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0036] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A deaerator overpressure discharge device, comprising a deaerator body (1), characterized in that, A filter box (11) is installed at the bottom of the deaerator body (1). Two slots (12) are opened at the bottom of the filter box (11). A rubber plate (13) is slidably connected inside the two slots (12). A filter screen plate (14) is fixedly connected to one end of the rubber plate (13). A rubber limiting plate (15) is fixedly connected to the other end of the filter screen plate (14). A support plate (16) is fixedly connected to one side of the filter box (11). A servo motor (17) is fixedly connected to the other side of the support plate (16). The output end of the servo motor (17) moves through the inside of the support plate (16) and is fixedly connected to one end of a gear (18). The toothed end of the gear (18) meshes with the toothed section of two toothed plates (19).

2. The deaerator overpressure emission device as described in claim 1, characterized in that, A suction pipe (2) is sealed to one side of the filter box (11), and the other end of the suction pipe (2) is sealed to the bottom of the deaerator body (1) and communicates with its interior. A liquid guide pipe (21) is sealed to the other side of the filter box (11), and the other end of the liquid guide pipe (21) is sealed to one end of the water storage tank (22). A liquid extraction pipe (23) is sealed to the other end of the water storage tank (22), and the other end of the liquid extraction pipe (23) is sealed to one end of the liquid extraction pump (24). A three-way solenoid valve (25) is sealed to the other end of the three-way solenoid valve (25), and an infusion pipe (26) is sealed to one end of the infusion pipe (26). The other end of the infusion pipe (26) is sealed to one side of the top of the deaerator body (1) and communicates with its interior.

3. The deaerator overpressure discharge device as described in claim 2, characterized in that, The other end of the three-way solenoid valve (25) is sealed to a first pipe (27), the other end of the first pipe (27) is sealed to one end of two first solenoid valves (30), the other end of the first solenoid valve (30) is sealed to one end of two second pipes (28), the other end of the second pipes (28) is sealed to multiple water spray pipes (29), and the second pipes (28) are respectively located on one side of the two filter screens (14).

4. The deaerator overpressure discharge device as described in claim 1, characterized in that, The size of the rubber plate (13) matches the size of the slot (12), and the length and width of the rubber limiting plate (15) are the same as the length and width of the slot (12).

5. The deaerator overpressure discharge device as described in claim 1, characterized in that, One end of each of the two toothed plates (19) is fixedly connected to one side of the bottom of the two rubber plates (13), and the two toothed plates (19) are installed alternately on both sides of the gear (18).

6. The deaerator overpressure discharge device as described in claim 3, characterized in that, The multiple water spray pipes (29) are divided into two groups and are symmetrically installed on both sides of the bottom of the filter box (11).

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