A blowdown device for a district heating system

Abstract

This utility model discloses a sewage discharge device for a centralized heating system, including a treatment tank with a buffer tank connected to it. An inlet pipe is connected to the side wall of the treatment tank, and an outlet pipe is connected to the top of the buffer tank. Multiple support frames are symmetrically installed on the outer side wall of the treatment tank. A filter screen is installed on the inner wall of the treatment tank, and a motor is installed at the bottom of the treatment tank. The output shaft of the motor extends into the treatment tank and is equipped with a crushing mechanism located below the filter screen. This utility model has a reasonable design, utilizing the fluidity of the liquid to move the solids in the material. During this movement, the solid material is crushed and filtered. Solid material that does not meet the particle size requirements remains inside the treatment tank for further processing until the requirements are met, reducing the probability of material causing pipe blockage.

Description

Technical Field

[0001] This utility model relates to the field of sewage discharge technology for heating systems, and in particular to a sewage discharge device for centralized heating systems. Background Technology

[0002] Centralized heating refers to a method of supplying heat energy to urban, town, or certain areas of a city or town through a heating network, using hot water or steam as the heat medium. During the operation of a centralized heating system, the following situations necessitate the use of a blowdown device: The heating system is closed, operates at high temperatures, and involves a large volume of replenished water. The water replenished to the system inevitably contains impurities and scale, which deposit rapidly. If these impurities and scale are not quickly and effectively removed from the circulating water, they easily accumulate and adhere to the system surface, forming hard, lumpy scale. This scale affects heat transfer, leading to heat loss. Furthermore, the presence of impurities and scale can corrode the metal components of the centralized heating system itself, increasing the risk of leaks and shortening its lifespan. Existing blowdown devices in heating systems only intercept lumpy scale, requiring the cleaning of the filter screen after interception. This necessitates disassembly and rinsing of the equipment, which is not only difficult but also time-consuming, resulting in high labor and time costs. Utility Model Content

[0003] The purpose of this utility model is to solve the problems in the background art by proposing a sewage discharge device for a centralized heating system.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sewage discharge device for a centralized heating system includes a treatment box, a buffer box connected to the treatment box, an inlet pipe connected to the side wall of the treatment box, an outlet pipe connected to the upper end of the buffer box, and multiple support frames symmetrically installed on the outer side wall of the treatment box.

[0006] The inner wall of the processing box is equipped with a filter screen, and a motor is installed at the bottom of the processing box. The output shaft of the motor extends into the processing box and is equipped with a crushing mechanism, which is located below the filter screen.

[0007] Preferably, the crushing mechanism includes a planetary gear carrier, which is fixedly installed on the inner wall of the processing box. A mounting bracket is installed on the output shaft of the motor, and multiple mounting shafts are symmetrically installed on the mounting bracket. Each mounting shaft is equipped with a transmission gear, and each transmission gear meshes with the planetary gear carrier. A central crushing roller is installed on the output shaft of the motor, and a rotating crushing roller is installed on each mounting shaft.

[0008] Preferably, multiple sets of cleaning brush rollers are symmetrically installed on the mounting frame, and each cleaning brush roller abuts against the lower surface of the filter screen.

[0009] Preferably, multiple limiting sliders are symmetrically installed on the mounting frame, and a limiting groove is formed on the inner side wall of the processing box, with each limiting slider slidably connected in the limiting groove.

[0010] Preferably, the inner diameter of the buffer box is smaller than the inner diameter of the processing box.

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

[0012] 1. The central crushing roller is driven to rotate forward by the motor, planetary gear carrier, mounting bracket, mounting shaft, and transmission gear. This causes the rotating crushing roller to revolve forward around the output shaft of the motor. At the same time, it causes the rotating crushing roller to rotate in the opposite direction around its corresponding mounting shaft. The rotating crushing roller and the central crushing roller rotate in opposite directions to squeeze and crush the material, reducing the particle size of the solids in the material and preventing the pipe from being blocked due to large solid particles.

[0013] 2. The cleaning brush roller is driven by the motor and mounting bracket to rotate around the output shaft of the motor. During the rotation, the filter screen is cleaned to prevent material from accumulating in the mesh of the filter screen and affecting the filtration effect.

[0014] In summary, this utility model is reasonably designed. It utilizes the fluidity of the liquid to move the solids in the material. During the movement, the solid material is crushed and filtered. Solid materials that do not meet the particle size requirements remain inside the processing box for further processing until the requirements are met, thus reducing the chance of material causing pipe blockage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a sewage discharge device for a centralized heating system proposed in this utility model;

[0016] Figure 2 This is an enlarged view of the crushing mechanism in a sewage discharge device for a centralized heating system proposed in this utility model;

[0017] Figure 3 This is an enlarged view of the internal structure of the treatment box of a sewage discharge device for a centralized heating system proposed in this utility model.

[0018] In the diagram: 1. Processing box, 2. Support frame, 3. Buffer box, 4. Discharge pipe, 5. Motor, 6. Planetary gear frame, 7. Limiting slide, 8. Filter screen, 9. Feed pipe, 10. Mounting frame, 11. Transmission gear, 12. Central crushing roller, 13. Rotating crushing roller, 14. Limiting slider, 15. Cleaning brush roller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A sewage discharge device for a centralized heating system includes a treatment box 1, a buffer box 3 connected to the treatment box 1, the inner diameter of the buffer box 3 being smaller than the inner diameter of the treatment box 1, the different inner diameters mean that the same flow of material fills different heights, shortening the time for the material to flow out of the device through the buffer box 3 after crushing, and allowing sufficient time for the crushing mechanism inside the treatment box 1 to crush the material. A feed pipe 9 is connected to the side wall of the treatment box 1, and a discharge pipe 4 is connected to the upper end of the buffer box 3. Multiple support frames 2 are symmetrically installed on the outer side wall of the treatment box 1.

[0021] A filter screen 8 is installed on the inner wall of the processing box 1. A motor 5 is installed at the bottom of the processing box 1. The output shaft of the motor 5 extends into the processing box 1 and is equipped with a crushing mechanism. The crushing mechanism is located below the filter screen 8. The crushing mechanism includes a planetary gear carrier 6, which is fixedly installed on the inner wall of the processing box 1. A mounting bracket 10 is installed on the output shaft of the motor 5. Multiple mounting shafts are symmetrically installed on the mounting bracket 10. A transmission gear 11 is installed on each mounting shaft, and each transmission gear 11 meshes with the planetary gear carrier 6. A central crushing roller 12 is installed on the output shaft of the motor 5, and a rotating crushing roller 13 is installed on each mounting shaft.

[0022] Multiple sets of cleaning brush rollers 15 are symmetrically installed on the mounting frame 10, and each cleaning brush roller 15 abuts against the lower surface of the filter screen 8. Each set of cleaning brush rollers 15 consists of multiple cleaning brush rollers 15. When the mounting frame 10 rotates with the motor 5, the cleaning brush rollers 15 on the mounting frame 10 rotate accordingly to clean the lower end surface of the filter screen 8, so as to prevent material from accumulating in the mesh of the filter screen 8 and affecting the filtration effect of the filter screen 8.

[0023] Multiple limiting sliders 14 are symmetrically installed on the mounting frame 10. A limiting groove 7 is opened on the inner side wall of the processing box 1, and each limiting slider 14 is slidably connected in the limiting groove 7, which enhances the stability of the mounting frame 10 during rotation and reduces the load on the output shaft of the motor 5.

[0024] Before use, the drain pipe of the heating system is connected to the feed pipe 9. The material discharged from the heating system enters the processing box 1 through the feed pipe 9. The motor 5 is turned on, and the output shaft of the motor 5 drives the mounting bracket 10 connected to it to rotate clockwise. The mounting shaft on the mounting bracket 10 rotates accordingly and drives the transmission gear 11 to rotate. The central crushing roller 12 rotates clockwise with the motor 5. Multiple transmission gears 11 revolve clockwise around the output shaft of the motor 5. While revolving, the transmission gears 11 mesh with the planetary gear carrier 6. Therefore, each transmission gear 11 revolves around the output shaft of the motor 5. The axis of the mounting shaft corresponding to the position rotates counterclockwise, and the rotating crushing roller 13 on the mounting shaft rotates clockwise around the output shaft of the motor 5. At the same time, the rotating crushing roller 13 rotates counterclockwise around the axis of the mounting shaft. The rotating crushing roller 13 and the central crushing roller 12 rotate in opposite directions to squeeze and crush the material, reducing the particle size of the solid in the material. As the amount of material inside the processing box 1 increases, the liquid in the material drives the solid to move upward, causing the material to spread upward. The material smaller than the particle size of the filter screen 8 extends into the buffer box 3 and flows out of the device through the discharge pipe 4.

[0025] It is worth noting that when the mounting frame 10 rotates with the motor 5, the cleaning brush roller 15 on the mounting frame 10 rotates accordingly to clean the lower end face of the filter screen 8, so as to prevent material from accumulating in the mesh of the filter screen 8 and affecting the filtration effect of the filter screen 8.

[0026] It is worth noting that while the crushing mechanism is rotating to crush the material, it also indirectly stirs the material to ensure its uniformity and prevent sedimentation.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for centralized heating systems for the removal of dirt, comprising a treatment tank (1), characterized in that: The processing box (1) is connected to a buffer box (3), the side wall of the processing box (1) is connected to a feed pipe (9), the upper end of the buffer box (3) is connected to a discharge pipe (4), and multiple support frames (2) are symmetrically installed on the outer side wall of the processing box (1). The inner wall of the processing box (1) is equipped with a filter screen (8), and a motor (5) is installed at the bottom of the processing box (1). The output shaft of the motor (5) extends into the processing box (1) and is equipped with a crushing mechanism, which is located below the filter screen (8).

2. A dirt discharging device for a central heating system according to claim 1, characterized in that: The crushing mechanism includes a planetary gear carrier (6), which is fixedly installed on the inner wall of the processing box (1). A mounting bracket (10) is installed on the output shaft of the motor (5). Multiple mounting shafts are symmetrically installed on the mounting bracket (10). A transmission gear (11) is installed on each mounting shaft, and each transmission gear (11) meshes with the planetary gear carrier (6). A central crushing roller (12) is installed on the output shaft of the motor (5), and a rotating crushing roller (13) is installed on each mounting shaft.

3. A dirt discharging device for a central heating system according to claim 2, characterized in that: Multiple sets of cleaning brush rollers (15) are symmetrically installed on the mounting frame (10), and each cleaning brush roller (15) abuts against the lower surface of the filter screen (8).

4. A dirt discharging device for a central heating system according to claim 1, characterized in that: Multiple limiting sliders (14) are symmetrically installed on the mounting frame (10). A limiting groove (7) is opened on the inner side wall of the processing box (1), and each limiting slider (14) is slidably connected in the limiting groove (7).

5. A dirt discharging device for a central heating system according to claim 1, characterized in that: The inner diameter of the buffer box (3) is smaller than the inner diameter of the processing box (1).

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