A vertical cyclone volumetric dirt separator for a sewage source heat pump heating system

Abstract

The utility model discloses a vertical cyclone volumetric decontaminator for sewage source heat pump heating system, including vertical casing, inclined plate type filter screen and bilateral maintenance structure. The casing bottom is equipped with tangential inlet pipe, and the top is equipped with water outlet pipe, and the inclined plate type filter screen is inclined and is arranged in the casing. Its innovation lies in, and the water outlet side and the water inlet side of filter screen are respectively provided with upper access hole and upper blowdown, lower access hole and lower blowdown. The structure makes without disassembling filter screen can carry out online high pressure cleaning to filter screen both sides respectively, thoroughly solves the problem that traditional decontaminator can only clean filter screen single side and leads to incomplete cleaning, short maintenance period. Combining cyclone decontamination and volumetric sedimentation principle, the efficient separation and collection of impurities are realized, and are automatically discharged through electric blowdown valve. According to the water quality requirement of sewage source heat pump unit, the filter screen filtering accuracy can be selected 1mm to 10mm. The utility model discloses reasonable structure, and cleaning maintenance is convenient, can significantly prolong the service life of filter screen, improves system operation stability and energy efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of water treatment equipment in sewage source heat pump systems, and specifically to a vertical vortex volumetric filter for sewage source heat pump heating systems. Background Technology

[0002] In wastewater source heat pump heating systems, the raw wastewater contains a large amount of suspended solids and impurities of different particle sizes. Efficient and reliable decontamination is crucial to ensuring the stable operation of the system. Cyclone decontamination technology is widely used due to its advantages such as large processing capacity and no need to replace filter cartridges. However, existing technologies still have many structural and functional limitations in practical applications.

[0003] For example, Chinese utility model patent CN206778011U discloses a "cyclone separator and cleaning device". This technology achieves multi-stage filtration by setting up a first and second cylinder in series and an internal filter assembly. However, each filter unit of this device adopts a double-layered filter screen structure, and the filter screen is fixed inside the cylinder by a connector. When cleaning or replacing the filter screen is required, the conical cylinder must be disassembled from the cylinder, which is a complicated operation, a long downtime, and extremely inconvenient maintenance. More importantly, its structure does not consider online cleaning of the filter screen's outlet side (back surface), and the dirt attached to the back of the filter screen cannot be effectively removed, resulting in incomplete cleaning and a short maintenance cycle.

[0004] Another Chinese utility model patent, CN210286930U, discloses an "automatic vortex scrubber." This technology achieves automatic sewage discharge based on pressure difference by installing pressure sensors in the inlet and outlet water pipes and connecting them to a PLC control system, thus improving the level of automation. However, its core filter component is a cylindrical filter screen covering the outlet. This structure means that the online backwash water flow can only act on the inlet side (water-facing side) of the filter screen. This structural design is ineffective for dirt that penetrates the filter screen or adheres to the outside of the filter screen (i.e., the back side) due to water flow. Long-term operation will also lead to increased system resistance due to scale buildup on the back side, which cannot be cleaned without disassembly.

[0005] In summary, existing cyclone separators, whether complex multi-stage filtration structures or single-cartridge structures with automatic sewage discharge, all share a common defect: their structural layout cannot support simultaneous and effective online cleaning of both sides of the filter screen. This directly leads to problems such as incomplete cleaning, short effective maintenance cycles, shortened filter screen lifespan due to frequent disassembly and cleaning, and decreased overall system efficiency due to persistently high resistance.

[0006] Therefore, there is an urgent need in this field for a more rationally designed filter that can provide the physical conditions for simultaneous online rinsing of both the water-facing and back-facing surfaces of the filter screen without disassembling the internal filter screen, thereby achieving thorough cleaning of the filter screen and fundamentally extending the maintenance cycle and the service life of the filter screen. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a vertical cyclone volumetric filter. The core technical problem to be solved is: how to optimize the overall structural layout to achieve online flushing or maintenance of the filter screen on both the inlet and outlet sides without disassembling the filter screen, thereby achieving thorough cleaning, extending the maintenance cycle, and reducing operating energy consumption.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system includes: Overall Layout and Water Flow Path: The filter adopts a vertical shell with an inlet pipe at the bottom and an outlet pipe at the top. The inlet pipe is connected tangentially to the shell. When sewage enters the filter at a certain speed along the tangential direction, it creates a high-speed rotating water flow inside the filter. Under the action of centrifugal force, denser impurities are thrown against the inner wall of the filter, moving downwards and settling with the rotating water flow. The bottom of the shell is designed with a conical structure, which further enhances the sedimentation effect of impurities.

[0009] Core Filter Components and Their Maintenance Structure: An inclined plate filter screen is installed inside the outer casing. This filter screen has a detachable structure, and its tilt angle is optimized between 30° and 60° to facilitate the removal of impurities by water flow and gravity. The key improvement of this invention lies in the following: an upper inspection port and an upper drain port are provided on the water outlet side of the inclined plate filter screen (corresponding to the upper part of the outer casing), while a lower inspection port and a lower drain port are provided on its water inlet side (corresponding to the lower part of the outer casing). This unique double-sided opening design is the core solution to the aforementioned technical problems.

[0010] Observation and Sewage Control: The outer casing is also equipped with an observation window made of high-strength, pressure-resistant, transparent material for easy and intuitive monitoring of the internal operating status. The lower sewage outlet located at the bottom of the volumetric decontamination zone is connected to an electric sewage valve (preferably an electric butterfly valve) for automatic sewage discharge.

[0011] Compared with the prior art, the present invention has the following significant advantages: 1. Achieves efficient double-sided in-situ cleaning of the filter screen: With inspection ports and drain outlets on both the inlet and outlet sides of the filter screen, maintenance personnel can perform high-pressure water rinsing or mechanical cleaning from both sides separately or simultaneously without cleaning or disassembling the filter screen. This completely solves the problem of scale buildup caused by the inability to clean the back surface of the filter screen in traditional structures, upgrading the cleaning effect from "single-sided cleaning" to "thorough double-sided cleaning."

[0012] 2. Significantly Extended Maintenance Cycle and Filter Lifespan: Thanks to the aforementioned dual-sided cleaning capability, the thoroughness of a single cleaning is greatly improved, and impurities are less likely to accumulate, thus significantly extending the effective maintenance interval. At the same time, frequent disassembly and assembly are avoided, reducing physical damage to the filter and its sealing elements, effectively extending the overall lifespan of the filter.

[0013] 3. Improved system stability and energy efficiency: Keeping the filter screen in a highly efficient and unobstructed state for a long time means that the system flow resistance can be kept at a low level, reducing energy loss caused by filter screen blockage, improving the overall operating efficiency and stability of the sewage source heat pump heating system, and reducing operating energy consumption.

[0014] 4. Reasonable structure and convenient maintenance: The combination of cyclone cleaning and volumetric cleaning enhances the impurity separation effect; the layout of double-sided inspection ports provides ample space for maintenance, making operation more convenient and safer.

[0015] 5. Filtration accuracy can be flexibly adjusted according to water quality conditions: The inclined plate filter screen of the vertical cyclone volumetric sludge separator in the sewage source heat pump heating system can be customized according to the actual water quality test report of the sewage. When the supplier provides the sludge separator product, the different filter screen filtration accuracy and effective flow area can be specified. According to the inlet water quality requirements of the sewage source heat pump unit, the filter screen filtration accuracy can be required to be between 1mm and 10mm. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the vertical cyclone volumetric filter of this utility model; Figure 2 This is a top view of the vertical cyclone volumetric filter of this utility model; In the diagram, 1-inlet pipe, 2-outlet pipe, 3-slanted plate filter, 4-observation window, 5-upper inspection port, 6-lower inspection port, 7-upper drain outlet, 8-lower drain outlet. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the preferred embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] This utility model provides a vertical vortex volumetric filter for sewage source heat pump heating systems. Its core feature is that it solves the problem of online cleaning of both sides of the filter screen through a unique double-sided opening structure.

[0019] See Figure 1 (Main view) and Figure 2 (Top view) The main body of the sludge separator of this utility model is a vertically arranged cylindrical shell. This shell is made of high-strength, corrosion-resistant steel, and the interior is treated with anti-corrosion measures to resist the erosion of sewage. Its specific structure includes: The bottom of the outer casing is provided with a water inlet pipe 1, which is connected along the tangent direction of the outer casing; the top of the outer casing is provided with a water outlet pipe 2.

[0020] The inclined plate filter 3 is disposed inside the outer shell. The inclined plate filter 3 is a detachable structure with an inclination angle of 30°~60°, preferably 45°.

[0021] The outer casing is equipped with an upper inspection port 5 and a lower inspection port 6 for inspecting and replacing the inclined plate filter screen; the upper inspection port 5 is located on the water outlet side of the inclined plate filter screen 3, and the lower inspection port 6 is located on the water inlet side of the inclined plate filter screen 3. Both the upper inspection port 5 and the lower inspection port 6 are equipped with sealing doors with sealing strips.

[0022] The outer casing is also provided with an upper drain port 7 and a lower drain port 8; the upper drain port 7 is located on the water outlet side of the inclined plate filter screen 3, and the lower drain port 8 is located on the water inlet side of the inclined plate filter screen 3.

[0023] Inside the outer shell, a vortex cleaning zone is formed through the tangential inlet of the water inlet pipe 1. Below the vortex cleaning zone, there is a volumetric cleaning zone with a cone-shaped bottom. An electric drain valve is installed at the bottom of the volumetric cleaning zone and is connected to the lower drain port 8.

[0024] The workflow is as follows: The wastewater to be treated enters the shell at high speed tangentially from the bottom inlet pipe 1. The tangential design of the inlet gives the water flow an extremely high tangential velocity, causing it to form a strongly rotating and downward-moving outer vortex under the constraint of the inner wall of the shell. This area constitutes the vortex cleaning zone. Under the action of strong centrifugal force, solid impurities with a density much greater than that of water are thrown towards the inner wall of the shell and rotate downward with the outer vortex.

[0025] When this external swirling flow reaches the conical structure at the bottom of the shell (i.e., the volumetric cleaning zone), due to the sharp reduction in the flow cross-section, most of the water flow changes direction under pressure, forming an internal swirling flow (clean water flow) located in the central area, rotating upwards. Impurities that were previously separated to the wall by centrifugal force and moved downwards, due to their greater inertia, cannot be redirected upwards with the internal swirling flow and ultimately fall into and collect in the volumetric cleaning zone at the bottom of the cone under their own gravity. Before reaching the top outlet, the upward-moving internal swirling flow passes through the inclined plate filter 3 for a final fine filtration, intercepting any fine particles it may be carrying, ultimately ensuring that the water discharged from the top outlet pipe 2 is clean.

[0026] In short, the separation principle is that the water flows in a double vortex motion of "downward outward rotation" and "upward inward rotation", while impurities are "thrown" into and "settled" at the bottom under the dual action of centrifugal force and gravity, thus achieving separation from the clean water.

[0027] The inclined plate filter screen 3 is fixed inside the outer casing at an angle by a bracket, preferably 45°. This angle facilitates the sliding of impurities along the filter plate surface under the action of water flow and gravity. The most critical improvement of this invention lies in the opening design on both sides of the filter screen. On the water outlet side of the filter screen (i.e., above the filter screen, corresponding to the clean water area), an upper inspection port 5 and an upper drain port 7 are provided on the outer casing. On the water inlet side of the filter screen (i.e., below the filter screen, corresponding to the swirling wastewater area), a lower inspection port 6 and a lower drain port 8 are symmetrically provided on the outer casing.

[0028] These four interfaces form the basis for realizing the "double-sided online cleaning" function. Both the upper inspection port 5 and the lower inspection port 6 are equipped with sealing doors with sealing strips to ensure reliable sealing during equipment operation. When cleaning is required, simply open the sealing doors to easily inspect, clean, or replace both sides of the filter.

[0029] In addition, an observation window 4 is installed at an appropriate position on the outer casing. This window is made of high-strength, pressure-resistant transparent glass (such as polycarbonate sheet), allowing operators to directly observe the internal water flow, filter cleanliness, and impurity deposition. The lower drain port 8 located at the bottom of the volumetric cleaning zone cone is connected to an electric drain valve (preferably an electric butterfly valve in this embodiment) for periodically or automatically discharging impurities collected therein.

[0030] The operation of this utility model to achieve the "double-sided online cleaning" function is as follows: When it is observed through observation window 4 that impurities adhere to both sides of the filter screen and require cleaning, there is no need to disassemble the filter screen or stop the machine. First, open the lower inspection port 6 and use a high-pressure flushing device to powerfully flush the water-facing side of the filter screen from the inlet side. Simultaneously or subsequently, open the upper inspection port 5 and similarly use a flushing device to flush the back water-facing side of the filter screen from the outlet side. Some of the heavier impurities flushed off will be discharged directly through the lower drain port 8; lighter impurities flushed to the water-facing side of the filter screen can also be discharged by opening the valve of the upper drain port 7. This dual-sided, coordinated cleaning method can thoroughly remove dirt from the back water-facing side that cannot be reached by single-sided cleaning, greatly improving cleaning efficiency and effectiveness, and extending the service life of the filter screen and the continuous operating time of the system.

[0031] In summary, this utility model, through its "bottom tangential water inlet and top water outlet" flow channel design, combined with the innovative layout of "sloping plate filter screen" and "double-sided maintenance and drain ports," successfully integrates cyclone cleaning, volumetric sedimentation, and fine filtration, ultimately overcoming the technical bottleneck of online double-sided filter screen cleaning. This cleaner has a reasonable structure, is easy to maintain, and can significantly improve the operational stability and energy efficiency of wastewater source heat pump systems, possessing high practical value and promising prospects for widespread application.

Claims

1. A vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system, characterized in that, include: The outer casing has a water outlet pipe (2) at the top and a water inlet pipe (1) at the bottom; the water inlet pipe (1) is located in the tangential direction of the outer casing, and the water outlet pipe (2) is used to discharge the treated water; The inclined plate filter (3) is installed inside the outer shell. The inclined plate filter (3) is a detachable structure with an inclination angle of 30°~60°. The outer casing is provided with an observation window (4) for observing the interior, and an upper inspection port (5) and a lower inspection port (6) for inspecting and replacing the inclined plate filter screen. The upper inspection port (5) is located on the water outlet side of the inclined plate filter screen (3), and the lower inspection port (6) is located on the water inlet side of the inclined plate filter screen (3). The interior of the outer shell forms a vortex cleaning zone through the tangential inlet of the water inlet pipe (1). Below the vortex cleaning zone is a volumetric cleaning zone with a cone-shaped bottom. An electric drain valve is provided at the bottom of the volumetric cleaning zone. The outer casing is also provided with an upper drain port (7) and a lower drain port (8); the upper drain port (7) is located on the water outlet side of the inclined plate filter screen (3), and the lower drain port (8) is located on the water inlet side of the inclined plate filter screen (3) and is connected to the electric drain valve.

2. The vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system according to claim 1, characterized in that, Both the upper inspection port (5) and the lower inspection port (6) are equipped with sealing doors with sealing strips.

3. The vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system according to claim 1, characterized in that, The observation window (4) is fitted with transparent glass made of high-strength pressure-resistant material.

4. The vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system according to claim 1, characterized in that, The electric drain valve is an electric butterfly valve.

5. The vertical cyclone volumetric sludge separator for a wastewater source heat pump heating system according to claim 1, characterized in that, The filtration accuracy of the inclined plate filter (3) is 1mm~10mm.

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