High-efficiency dirt and sundry separation device for heat exchange station of combined heat and power supply

Abstract

The utility model relates to a high -efficient dirt and sundry separation device of heat exchange station of heat and power cogeneration, including the casing, the inside installation of casing has the conical filter screen, the outer surface of casing is connected with the water inlet pipe and the water storage jar respectively, and the water inlet pipe and the water storage jar are respectively distributed in the front and back two sides of conical filter screen, and the surface of water storage jar is provided with the water outlet pipe, the inside through -penetration of casing and the rotation installation of hollow shaft rod are equipped with the flush pipe, the outer surface of hollow shaft rod is connected with the flush pipe, and the flush pipe sets up in the back of conical filter screen, and the surface of flush pipe evenly distributes a plurality of flush nozzles, the outer surface of water storage jar is provided with the flush mechanism of communication with hollow shaft rod. Through flush mechanism, the water in water storage jar is pumped to hollow shaft rod, and the active rotation of hollow shaft rod is driven by cooperation rotating mechanism, can carry out backflush to the whole surface of conical filter screen, thereby can realize the purpose of cleaning without dismounting operation to conical filter screen, and the maintenance is simple and efficient, and the equipment downtime is short.

Description

Technical Field

[0001] This utility model relates to the field of urban centralized heating technology, specifically to a high-efficiency decontamination and debris separation device for combined heat and power (CHP) heat exchange stations. Background Technology

[0002] Combined heat and power (CHP) is an important way to improve energy efficiency, and the heat generated is used for district heating. In a heating system, the heat exchange station is a key node connecting the primary and secondary pipe networks. When circulating water flows through the pipe network, it carries iron oxide scale, welding slag, silt, scale, and other solid impurities that detach from the inner walls of the pipes. If these impurities enter the heat exchanger, they will adhere to the inner walls of the heat exchange tubes, significantly reducing heat exchange efficiency and increasing energy consumption. If they enter the circulating pumps on the user side, they can cause impeller wear or jamming, affecting the stable operation of the system.

[0003] Currently, the most commonly used decontamination device in heat exchange stations is the Y-type filter, which uses its internal filter screen to separate impurities. However, as impurities accumulate on the surface of the filter screen, continuous flow resistance is created, requiring the filter screen to be cleaned. However, the existing cleaning method requires removing the filter screen from the inside of the filter, cleaning it, and then reinstalling it. The entire maintenance work is arduous, inefficient, and the cumbersome disassembly and assembly operations are time-consuming and labor-intensive, increasing labor costs. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency decontamination and debris separation device for cogeneration heating heat exchange stations, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A high-efficiency decontamination and debris separation device for a combined heat and power (CHP) heat exchange station includes a shell. A conical filter screen is installed inside the shell. An inlet pipe and a water storage tank are connected to the outer surface of the shell, located on the front and rear sides of the conical filter screen, respectively. An outlet pipe is installed on the surface of the water storage tank. A hollow shaft is rotatably mounted through the shell. A flushing pipe is connected to the outer surface of the hollow shaft and is located behind the conical filter screen. Multiple flushing nozzles are evenly distributed on the surface of the flushing pipe. A flushing mechanism connected to the hollow shaft is installed on the outer surface of the water storage tank. A rotating mechanism capable of driving the hollow shaft to rotate actively is installed on the outer surface of the shell.

[0007] Furthermore, the flushing mechanism includes a pump body installed on the outer surface of the water storage tank. The input end of the pump body is connected to a water suction pipe, the end of which is connected to the water storage tank. The output end of the pump body is connected to a water supply pipe, and the end of which is connected to a hollow shaft via a rotary joint.

[0008] Furthermore, the rotating mechanism includes a worm gear mounted on the outer surface of the hollow shaft, two fixed blocks mounted on the outer surface of the housing, a rotating shaft rotatably mounted between the two fixed blocks, a worm gear mounted on the outer surface of the rotating shaft, and the worm gear meshing with the worm gear.

[0009] Furthermore, a stop is hinged to the end of the flushing nozzle, and a torsion spring is installed at the hinge of the stop. A valve is installed on the water pump pipe.

[0010] Furthermore, the end of the conical filter screen facing the hollow shaft is provided with an end cap, and the end of the hollow shaft is rotatably connected to the end cap.

[0011] Furthermore, a drain pipe is provided on the surface of the housing, and the drain pipe is located on the front side of the conical filter screen.

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

[0013] 1. This utility model uses a flushing mechanism to pump water from the storage tank into the hollow shaft, and a rotating mechanism to drive the hollow shaft to rotate actively, which can backwash the entire surface of the conical filter screen. Thus, the purpose of cleaning can be achieved without disassembling the conical filter screen. It is simple to maintain, highly efficient, and has short downtime.

[0014] 2. By setting up a baffle, this utility model can prevent water from impacting the inside of the flushing nozzle during non-backwashing periods, avoiding the accumulation of tiny impurities over a long period of time that could cause blockage inside the flushing nozzle, ensuring the smooth flow of the flushing nozzle and improving the backwashing effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0017] Figure 3 for Figure 1 Enlarged diagram of A in the middle;

[0018] Figure 4 This is a schematic diagram of the flushing pipe in this utility model. Detailed Implementation

[0019] Please see Figures 1-4The utility model provides a high-efficiency decontamination and debris separation device for a cogeneration heating heat exchange station, including a shell 1, an inlet pipe 101, a conical filter screen 102, an end 103, a drain pipe 104, a water storage tank 2, an outlet pipe 201, a hollow shaft 3, a flushing pipe 301, a flushing nozzle 302, a baffle block 303, a flushing mechanism 4, a pump body 401, a pumping pipe 402, a water supply pipe 403, a rotary joint 404, a valve 405, a rotating mechanism 5, a worm gear 501, a fixing block 502, a rotating shaft 503, and a worm 504.

[0020] 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.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0022] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0023] A conical filter screen 102 is installed inside the housing 1. An inlet pipe 101 and a water storage tank 2 are connected to the outer surface of the housing 1, respectively. The inlet pipe 101 and the water storage tank 2 are located on the front and rear sides of the conical filter screen 102. An outlet pipe 201 is provided on the surface of the water storage tank 2. Water enters the housing 1 through the inlet pipe 101, is filtered by the conical filter screen 102, flows into the water storage tank 2, and exits through the outlet pipe 201. When backwashing of the conical filter screen 102 is required, the circulating water pump is turned off, and the water in the water storage tank 2 can be used for backwashing. A hollow shaft 3 is rotatably installed through the housing 1. A flushing pipe 301 is connected to the outer surface of the hollow shaft 3. The flushing pipe 301 is located on the rear side of the conical filter screen 102, and multiple flushing nozzles 302 are evenly distributed on the surface of the flushing pipe 301. The flushing nozzles 302 correspond to the filter holes on the conical filter screen 102, and can clear impurities clogging the filter holes under the impact of water flow. The outer surface of the water storage tank 2 is equipped with a flushing mechanism 4 that communicates with the hollow shaft 3, used to pump water from the water storage tank 2 into the hollow shaft 3 for backwashing. The outer surface of the housing 1 is equipped with a rotating mechanism 5 that can drive the hollow shaft 3 to rotate actively, changing the backwashing position of the conical filter screen 102 and avoiding dead zones. The surface of the housing 1 is equipped with a drain pipe 104, which is located in front of the conical filter screen 102. During backwashing, sewage, debris, etc. can be discharged outward through the drain pipe 104.

[0024] Please see Figure 1 and Figure 2 The flushing mechanism 4 includes a pump body 401 installed on the outer surface of the water storage tank 2. The input end of the pump body 401 is connected to a water pumping pipe 402, the end of the water pumping pipe 402 is connected to the water storage tank 2, and the output end of the pump body 401 is connected to a water supply pipe 403. The end of the water supply pipe 403 is connected to the hollow shaft 3 through a rotary joint 404.

[0025] When the pump body 401 is started, the negative pressure generated draws the filtered water from the water storage tank 2 through the water pumping pipe 402 and delivers it to the hollow shaft 3 through the water supply pipe 403. Then, it enters the flushing pipe 301 from the hollow shaft 3 and is sprayed out by the flushing nozzle 302 to achieve the purpose of backwashing. Since the backwash water is filtered by the conical filter screen 102, secondary clogging can be avoided. Furthermore, through the setting of the rotary joint 404, water can be continuously supplied during the rotation of the hollow shaft 3, so that the flushing is uninterrupted.

[0026] Please see Figure 1 and Figure 3The rotating mechanism 5 includes a worm gear 501 mounted on the outer surface of the hollow shaft 3. Two fixed blocks 502 are mounted on the outer surface of the housing 1, and a rotating shaft 503 is rotatably mounted between the two fixed blocks 502. A worm 504 is mounted on the outer surface of the rotating shaft 503, and the worm 504 meshes with the worm gear 501. The tapered filter screen 102 has an end head 103 at one end facing the hollow shaft 3, and the end of the hollow shaft 3 is rotatably connected to the end head 103.

[0027] When the rotating shaft 503 is rotated, it drives the worm 504 to rotate. The worm 504 meshes with the worm wheel 501, thus driving the hollow shaft 3 to rotate and changing the rinsing position of the conical filter screen 102. The self-locking property of the worm wheel 501 and the worm 504 prevents the hollow shaft 3 from rotating under the influence of water flow.

[0028] Since the hollow shaft 3 is rotatably connected to the end 103, not only is the rotation of the hollow shaft 3 more stable, but the hollow shaft 3 also provides support for the conical filter screen 102, so that it does not deform under the impact of water flow, achieving two goals at once.

[0029] Please see Figure 1 and Figure 4 A stop 303 is hinged to the end of the flushing nozzle 302, and a torsion spring is provided at the hinge of the stop 303. A valve 405 is installed on the water pump pipe 402.

[0030] By setting up the baffle 303, water impact on the interior of the flushing nozzle 302 is prevented during non-backwashing periods. This avoids the accumulation of tiny impurities over time, preventing blockage of the flushing nozzle 302 and ensuring its unobstructed flow, thus improving the backwashing effect. During backwashing, the water flow can push the baffle 303 open, without affecting normal use. Furthermore, the dual blocking effect of the baffle 303 and valve 405 prevents water from entering the pump body 401 and causing cavitation, thus reducing the risk of damage to the impeller and pump casing.

[0031] The specific workflow and working principle of this device are as follows.

[0032] Water enters the housing 1 through the inlet pipe 101, is filtered by the conical filter screen 102, flows into the storage tank 2, and exits through the outlet pipe 201. When backwashing of the conical filter screen 102 is required, the circulating water pump is turned off and the drain pipe 104 is opened. At this time, sewage and impurities in the housing 1 will be discharged from the drain pipe 104. Then, the pump body 401 is started to draw water from the storage tank 2 and transport it to the hollow shaft 3. Finally, the water is sprayed out from the flushing nozzle 302 to backwash the filter holes on the conical filter screen 102. At the same time, the worker can rotate the rotating shaft 503, which drives the worm gear 504 to rotate. Since the worm gear 504 meshes with the worm wheel 501, it can drive the hollow shaft 3 to rotate, changing the flushing position of the conical filter screen 102 and avoiding dead angles. After the backwashing is completed, turn off the pump body 401 and the drain pipe 104, and turn on the circulating water pump. This eliminates the need to disassemble the conical filter screen 102 to achieve the cleaning purpose, making maintenance simple, efficient, and reducing equipment downtime.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency decontamination and impurity separation device for a combined heat and power (CHP) heat exchange station, comprising a shell (1), characterized in that: The shell (1) is equipped with a conical filter screen (102) inside. The outer surface of the shell (1) is connected to a water inlet pipe (101) and a water storage tank (2). The water inlet pipe (101) and the water storage tank (2) are respectively distributed on the front and rear sides of the conical filter screen (102). The surface of the water storage tank (2) is provided with a water outlet pipe (201). A hollow shaft (3) is installed through and rotatably inside the housing (1). A flushing pipe (301) is connected to the outer surface of the hollow shaft (3). The flushing pipe (301) is located on the rear side of the conical filter (102). Multiple flushing nozzles (302) are evenly distributed on the surface of the flushing pipe (301). The outer surface of the water storage tank (2) is provided with a flushing mechanism (4) that communicates with the hollow shaft (3), and the outer surface of the housing (1) is provided with a rotating mechanism (5) that can drive the hollow shaft (3) to rotate actively.

2. The high-efficiency decontamination and impurity separation device for a cogeneration heat exchange station according to claim 1, characterized in that: The flushing mechanism (4) includes a pump body (401) installed on the outer surface of the water storage tank (2). The input end of the pump body (401) is connected to a water pumping pipe (402), the end of the water pumping pipe (402) is connected to the water storage tank (2), and the output end of the pump body (401) is connected to a water supply pipe (403). The end of the water supply pipe (403) is connected to the hollow shaft (3) through a rotary joint (404).

3. The high-efficiency decontamination and impurity separation device for a cogeneration heat exchange station according to claim 1, characterized in that: The rotating mechanism (5) includes a worm gear (501) mounted on the outer surface of the hollow shaft (3), two fixing blocks (502) mounted on the outer surface of the housing (1), a rotating shaft (503) rotatably mounted between the two fixing blocks (502), a worm (504) mounted on the outer surface of the rotating shaft (503), and the worm (504) meshing with the worm gear (501).

4. The high-efficiency decontamination and impurity separation device for a cogeneration heat exchange station according to claim 2, characterized in that: The end of the flushing nozzle (302) is hinged to a stop (303), and a torsion spring is provided at the hinge of the stop (303). A valve (405) is installed on the water pumping pipe (402).

5. The high-efficiency decontamination and impurity separation device for a cogeneration heat exchange station according to claim 1, characterized in that: The conical filter screen (102) has an end head (103) at one end facing the hollow shaft (3), and the end of the hollow shaft (3) is rotatably connected to the end head (103).

6. The high-efficiency decontamination and impurity separation device for a cogeneration heat exchange station according to claim 1, characterized in that: The surface of the housing (1) is provided with a drain pipe (104), which is located on the front side of the conical filter (102).

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