Stepwise filtering oilstone surface processing sewage post-processing storage tank

Abstract

The application discloses a stepped filter water pool for post-treatment of oilstone surface processing sewage, which comprises a pool body and a filter cavity, the filter cavity is arranged in the pool body, a water inlet pipe is arranged on one side of the pool body, the water inlet pipe is communicated with the filter cavity, at least two layers of filter screens are arranged in the filter cavity along a water flow direction, and the filter hole diameters of the filter screens gradually decrease layer by layer along the water flow direction. Through the step-by-step filtration of the multiple layers of filter screens, different-particle-size impurities can be efficiently separated, the purification effect of the sewage is greatly improved, the treated water can be directly used for cleaning or returned to oilstone surface processing equipment, and water resource waste is reduced.

Description

Technical Field

[0001] This application relates to the field of oilstone treatment equipment technology, and in particular to a step-type filter for post-treatment storage tank of wastewater from oilstone surface processing. Background Technology

[0002] During the surface processing of oilstones, grinding and cutting processes generate a large amount of wastewater containing oil, metal shavings, and abrasive particles. Direct discharge of this wastewater would cause environmental pollution due to excessive levels of pollutants, failing to meet environmental regulations. If it is transported to a dedicated wastewater treatment plant for centralized treatment, additional transportation and treatment costs are required, and leakage may occur during transportation, further exacerbating the pollution risk.

[0003] In existing small-scale processing scenarios, some enterprises use simple sedimentation tanks to treat this type of wastewater. However, natural sedimentation alone cannot effectively remove oil and fine particles, resulting in poor water quality that is difficult to recycle and leads to water waste. Furthermore, traditional treatment devices lack a tiered filtration structure, with fixed filter pore sizes, making it impossible to efficiently separate impurities of different particle sizes in the wastewater. This results in low filtration efficiency and easy clogging of the filter screen, requiring frequent cleaning and maintenance, which affects the continuity of processing.

[0004] Therefore, there is an urgent need for a post-treatment device that can be integrated into the processing site, can filter wastewater in stages and enable recycling, in order to solve the problems of direct wastewater discharge polluting the environment, high cost of centralized treatment, and poor effect of simple treatment in the existing technology. Summary of the Invention

[0005] The purpose of this application is to overcome the shortcomings of the existing technology and provide a stepped filter for the post-treatment storage tank of wastewater from oilstone surface processing.

[0006] To achieve the above technical objectives, this application provides a stepped filtration system for post-treatment storage tanks of wastewater from oilstone surface processing, comprising: a tank body with an inlet pipe on one side; a filtration chamber located within the tank body, the inlet pipe connecting to the filtration chamber, and at least two layers of filter screens arranged along the water flow direction within the filtration chamber, the pore size of each layer of filter screens decreasing progressively along the water flow direction; circulating water can enter the filtration chamber through the inlet pipe, and after being filtered layer by layer by the filter screens, it flows to the bottom of the tank body for cleaning or return to the oilstone surface processing equipment.

[0007] Furthermore, the filter screen is detachably installed inside the water filtration chamber.

[0008] Furthermore, one side wall of the water tank body and one side wall of the filtration chamber share the same wall, and an operation hole is provided on the shared wall surface; the filter screen is arranged in a drawer-type structure and is slidably installed in the filtration chamber, and the filter screen can be pulled out or pushed in through the operation hole.

[0009] Furthermore, the inner wall of the filtration chamber is provided with at least two layers of support protrusions, which extend toward the operating hole. Each layer of support protrusions is used to support a set of filter screens. Rollers are provided on the back of the filter screens facing the support protrusions. The filter screens are slidably mounted on the support protrusions by the rollers. The support protrusions can bear the weight of the filter screens and prevent the filter screens from sagging or shifting due to gravity during use. And / or, an elastic sealing gasket is provided on the outer wall surface around the operating hole. The cover of the drawer-type structure is provided with a sealing edge that cooperates with the elastic sealing gasket. After the filter screens are fully pushed into the filtration chamber, the cover surface abuts against the outer wall surface. The sealing edge can fit tightly with the elastic sealing gasket and form a seal through elastic compression, thereby preventing liquid in the filtration chamber from leaking from the operating hole.

[0010] Furthermore, a return water trough is provided on the outer wall of the water tank body. The return water trough is located below the operation hole and is connected to the water tank body. When the filter screen is pulled out, the liquid falling off the filter screen can flow back to the water tank body through the return water trough. The top of the return water trough is covered with an interception net, which is used to prevent impurities from entering the return water trough and the water tank body.

[0011] Furthermore, the side wall of the filtration chamber is provided with an overflow hole, which is positioned higher than the filter screen; when the liquid level in the filtration chamber is higher than the preset position, it can be guided through the overflow hole.

[0012] Furthermore, the pool body is equipped with a level gauge to detect the liquid level inside the pool body, so as to indicate whether to add or drain water; and / or, the pool body is equipped with a water quality monitor to monitor the turbidity of the water in the pool body, thereby ensuring that the water stored in the pool body can be used normally for cleaning or recycling.

[0013] Furthermore, at least three sets of water outlet pipes are provided on the side of the water tank body away from its inlet pipe, and the at least three sets of water outlet pipes are spaced apart along the height direction; valves are provided on the water outlet pipes.

[0014] Furthermore, the bottom of the pool body is a sloping structure, tilting downwards from the outlet side to the inlet side, so as to guide impurities to settle in a position away from the outlet pipe.

[0015] Furthermore, the pool body is also equipped with a drain pipe, which is directly opposite the sinking position to discharge deposited impurities; the drain pipe is equipped with a valve.

[0016] This application provides a stepped filtration system for wastewater from oilstone surface processing, comprising a tank body and a filtration chamber. The filtration chamber is located within the tank body, and an inlet pipe is provided on one side of the tank body, connecting to the filtration chamber. At least two layers of filter screens are arranged within the filtration chamber along the water flow direction, with the pore size of each layer decreasing progressively along the water flow direction. Through the step-by-step filtration of multiple filter screens, impurities of different particle sizes can be efficiently separated, significantly improving the purification effect of the wastewater. The treated water can be directly used for cleaning or returned to the oilstone surface processing equipment, reducing water waste. Furthermore, this structure is integrated into the processing site, eliminating the need to transport wastewater to a dedicated wastewater treatment plant, thus solving the problems of high centralized treatment costs and potential leakage during transportation. Compared to traditional devices lacking a stepped filtration structure, the progressively decreasing pore size design reduces the probability of filter screen clogging, decreasing the frequency of cleaning and maintenance, thereby ensuring the continuity of processing. Attached Figure Description

[0017] Figure 1 This application provides a schematic diagram of the structure of a stepped filter for post-treatment storage tank of wastewater from oilstone surface processing. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0019] When processing the surface of an oilstone, multiple grinding passes are required. To prevent excessive heat generation and damage caused by high-speed friction between the oilstone and the grinding disc, and to prevent the spread of grinding dust, environmental pollution, and impact on processing accuracy, cooling water must be continuously sprayed onto the grinding area. During the spraying process, the cooling water mixes with the powder removed from the oilstone surface, debris from the wear of the grinding disc, and suspended dust from the surrounding environment, forming a mixed liquid containing a large amount of solid impurities. This mixed liquid is the wastewater described in this application.

[0020] Because the solid impurities (such as oilstone powder, metal shavings, etc.) contained in wastewater can affect its reuse (e.g., it may clog pipes or scratch processed parts when reused for spraying), and direct discharge will cause the deposition of environmental pollutants and fail to meet environmental protection requirements, wastewater needs to be treated before reuse or discharge.

[0021] Therefore, some workshops are equipped with single-stage or multi-stage sedimentation and filtration tanks to filter out impurities from wastewater and obtain cleaner circulating water. This circulating water can be used to clean parts or equipment, or it can be returned to processing equipment and reused for spraying.

[0022] Production workshops are often equipped with multiple oilstone surface processing machines for operations such as oilstone cutting, rough grinding, and fine grinding. These machines require continuous spraying of cooling water during operation, resulting in a huge amount of wastewater generation. The volume and treatment capacity of the settling and filtration tanks are limited, making it difficult to simultaneously accommodate and treat the large amount of continuously generated wastewater. Therefore, a large-capacity transfer and deep treatment unit (i.e., the post-treatment storage tank claimed in this application) is needed to receive the wastewater after the previous treatment to prevent wastewater overflow or untimely treatment.

[0023] In one specific embodiment, the wastewater generated during the oilstone surface processing (containing oilstone powder, metal fragments, suspended dust, and other impurities) first enters a primary settling and filtration tank. This primary settling and filtration tank removes larger particle sizes (such as large metal fragments and coarse oilstone powder) from the wastewater through natural sedimentation or preliminary filtration, achieving initial purification. After primary treatment, the wastewater enters a secondary settling and filtration tank. This secondary settling and filtration tank further treats the wastewater through sedimentation or filtration, focusing on removing medium-sized impurities (such as smaller metal particles and fine oilstone powder), reducing the concentration of impurities in the wastewater and easing the burden on subsequent advanced treatment. After the step-by-step purification through the primary and secondary settling and filtration tanks, most of the larger and medium-sized impurities in the wastewater have been removed, but a small amount of fine impurities (such as micron-sized oilstone powder and suspended particles) remain.

[0024] This application provides a stepped filtration system for post-treatment storage tanks of wastewater from oilstone surface processing, comprising: a tank body 1, with an inlet pipe 2 on one side of the tank body 1; a filtration chamber 3 located inside the tank body 1, the inlet pipe 2 connecting to the filtration chamber 3, and at least two layers of filter screens 4 arranged in the filtration chamber 3 along the water flow direction, the pore size of each layer of filter screens 4 decreasing progressively along the water flow direction; the circulating water can enter the filtration chamber 3 through the inlet pipe 2, and after being filtered layer by layer by the filter screens 4, it flows to the bottom of the tank body 1 for cleaning or return to the oilstone surface processing equipment.

[0025] The water tank body 1 serves as the main support and water storage component of the entire device. It has a closed or semi-closed cavity structure (such as a cuboid or cube), forming an internal space to hold the water. The water tank body 1 is connected to the outlet of the oilstone surface processing equipment, or it is connected to the outlet of the settling and filtration tank. The water to be circulated ultimately enters the water tank body 1 for final cleaning and storage. For details, please refer to Figure 1In the illustrated embodiment, the inlet pipe 2 is located at the top of the water tank body 1, near the right side of the water tank body 1. The filter chamber 3 is located on the right side inside the water tank body 1. The filter chamber 3 is an independent cavity located inside the water tank body 1, and its cavity space is smaller than the water tank body 1. The bottom of the filter chamber 3 is open or has a through hole. The inlet pipe 2 is sealed to the filter chamber 3, so that the water to be circulated can only enter the filter chamber 3 through the inlet pipe 2, then flow out from the bottom of the filter chamber 3 and finally settle at the bottom of the water tank body 1.

[0026] Continue to refer to Figure 1 The water filtration chamber 3 is equipped with three layers of filter screens 4 (in other embodiments, only two layers of filter screens 4 may be installed in the water filtration chamber 3, or four or more layers of filter screens 4 may be installed. This application does not limit the number of filter screens 4 installed, and the specific design can be made according to the filtration needs). The filter screens 4 are panel-shaped filtration structures, with the three layers of filter screens 4 arranged side by side in the vertical direction. Water entering the water filtration chamber 3 from the inlet pipe 2 can pass through the three filter screens 4 layer by layer from top to bottom under the influence of its own weight. The pore size of the filter screens 4 decreases layer by layer from top to bottom. The pore size of the first layer of filter screen at the top is larger than that of the second layer of filter screen, and the pore size of the third layer of filter screen is the smallest.

[0027] Specifically, the wastewater from the oilstone surface processing (containing oilstone powder, metal shavings, and other impurities) is transported from the outside through the inlet pipe 2 to the filtration chamber 3 inside the water tank body 1. After entering the filtration chamber 3, the wastewater flows along a preset water flow direction, passing sequentially through the first layer of filter screen 4 (with larger pores), the second layer of filter screen 4 (with smaller pores), and so on (until all filter screens are used). During this process, impurities of different particle sizes are intercepted by the corresponding filter screens. After being filtered through multiple layers of filter screens 4, the clean water with impurities removed flows out of the filtration chamber 3 and into the bottom of the water tank body 1. The clean water stored at the bottom of the water tank body 1 can be directly used for the cleaning process or returned to the oilstone surface processing equipment for recycling.

[0028] The step-type filtration system for wastewater from oilstone surface processing provided in this application offers a dedicated water storage tank via the tank body 1. Combined with the inlet pipe 2, the pre-treated wastewater is introduced into the filtration chamber 3 located within the tank body 1. The filtration chamber 3 utilizes at least two layers of filter screens 4 with progressively decreasing pore sizes arranged along the water flow direction to achieve step-type filtration of the wastewater. Through the step-by-step filtration of multiple filter screens 4, impurities of different particle sizes (such as oilstone powder and metal fragments) can be efficiently separated, significantly improving the wastewater purification effect. The treated water can be directly used for cleaning or returned to the oilstone surface processing equipment, reducing water waste. Furthermore, this structure is integrated into the processing site, eliminating the need to transport wastewater to a dedicated wastewater treatment plant, thus solving the problems of high centralized treatment costs and potential leakage during transportation. Compared to traditional devices lacking a graded filtration structure, the progressively decreasing pore size design reduces the probability of filter screen clogging, decreasing the frequency of cleaning and maintenance, thereby ensuring the continuity of processing.

[0029] Optionally, the filter screen 4 is detachably installed inside the water filtration chamber 3.

[0030] The purpose of making filter screen 4 removable is to facilitate cleaning, replacement, or maintenance. During the filtration process, filter screen 4 intercepts a large amount of impurities, which can easily become clogged after prolonged use. The removable design allows for easy removal of filter screen 4 to clean the impurities attached to it, thereby restoring its filtration efficiency. When filter screen 4 is worn or its filter pores are severely clogged and cannot be cleaned, it can be easily replaced with a new filter screen 4, thus ensuring the continuous and stable filtration effect and preventing the inconvenience of filter screen 4 maintenance from affecting the operation of the entire device.

[0031] In one embodiment, the filter screen 4 is detachably connected to the water filtration chamber 3 by means of a snap-fit ​​connection. Specifically, the inner wall of the water filtration chamber 3 is provided with a snap-fit ​​seat, and the edge of the filter screen 4 is provided with snaps that match the snap-fit ​​seat; during installation, the filter screen 4 is placed into the water filtration chamber 3, so that the snaps are engaged and fixed with the snap-fit ​​seat; during disassembly, the snaps are pressed to disengage from the snap-fit ​​seat, and the filter screen 4 can be removed.

[0032] In another embodiment, the filter screen 4 is detachably connected to the water filter chamber 3 by bolts. Specifically, the filter screen 4 has mounting holes on its edge, and the inner wall of the water filter chamber 3 has a mounting bracket with corresponding threaded holes, so that the bolts can pass through the mounting holes and the threaded holes to fix the filter screen 4 by bolting. Unscrewing the bolts allows the filter screen 4 to be easily removed.

[0033] This application does not limit the specific connection method between the filter screen 4 and the water filtration chamber 3.

[0034] In one specific embodiment, one side wall of the water tank body 1 and one side wall of the water filtration chamber 3 share a common wall, and an operation hole is provided on the common wall surface; the filter screen 4 is configured in a drawer-type structure and is slidably disposed in the water filtration chamber 3, and the filter screen 4 can be pulled out or pushed in through the operation hole.

[0035] For details, please refer to Figure 1 In the illustrated embodiment, the right side wall of the filtration chamber 3 is shared with the right side wall of the water tank body 1. The operating hole is the drawer opening. At this time, the filter screen 4 is a flat box or frame shape and is directly used as a drawer, or a frame-type drawer structure adapted to the drawer opening is provided, and the panel-shaped filter screen 4 is detachably placed in the drawer structure. With the drawer opening facing inward, a ring of supporting protrusions is provided on the inner wall of the filtration chamber 3 to support the filter screen 4. A cover is provided on the right side of the drawer. The size of the cover is slightly larger than the drawer opening. After the drawer is pushed into the filtration chamber 3 from the drawer opening, the cover can seal the drawer opening. A sealing strip is provided between the cover and the shared wall surface; when the cover seals the drawer opening, the sealing strip is pressed between the cover and the shared wall surface and can compensate for the gap through deformation, thereby preventing sewage from overflowing through the drawer opening.

[0036] When the filter screen 4 needs to be cleaned or replaced, pull the cover outward to pull the filter screen 4 out of the water filtration chamber 3 so that the filter screen 14 can be cleaned from the outside or a new filter screen 4 can be replaced. After completion, push the cover inward to push the filter screen 4 back into the water filtration chamber 3 until the cover is in contact with the wall surface, thus realizing the reset installation of the filter screen 4.

[0037] The drawer-type structure is easy to operate, allowing for quick and accurate removal or insertion of filter screen 4 without disassembling other parts, thus reducing maintenance difficulty.

[0038] Furthermore, the inner wall of the water filtration chamber 3 is provided with at least two layers of support protrusions, which extend toward the operation hole. Each layer of support protrusions is used to support a set of filter screens 4. The filter screens 4 are provided with rollers facing the back of the support protrusions. The filter screens 4 are slidably mounted on the support protrusions by the rollers. The support protrusions can bear the weight of the filter screens 4 and prevent the filter screens 4 from sagging or shifting due to gravity during use.

[0039] Specifically, the first-layer support protrusion includes two opposing elongated protrusions, one of which extends along the direction of the drawer's sliding movement. The elongated protrusions support the top surface of the filter screen 4 to ensure flatness and stably support the filter screen 4. Two sets of rollers are rotatably mounted on the back of the filter screen 4 via a pivot, with one elongated protrusion supporting one set of rollers, allowing the rollers to roll along the elongated protrusions.

[0040] When the drawer is pushed or pulled, the rollers roll along the top surface of the support boss to facilitate the quick and smooth entry and exit of the filter screen 4 into the water filtration chamber 3. During the filtration process, the support boss bears the weight of the filter screen 4 and the impurities it intercepts, while the rollers are stationary under force to ensure that the filter screen 4 remains horizontal.

[0041] By supporting the filter screen 4 with the support boss, it is possible to prevent the filter screen 4 from sagging, deforming or detaching from the wall of the water filtration chamber 3 due to long-term bearing of impurities, thereby ensuring that the surface of the filter screen 4 is flat and that sewage can flow through the filter screen 4 evenly.

[0042] The rollers can convert the sliding friction between the filter screen 4 and the support boss into rolling friction, thereby reducing the pushing and pulling resistance, making the pulling of the filter screen 4 easier and smoother, reducing operational wear, and avoiding the problem of improper installation caused by the filter screen 4 getting stuck. This helps to improve maintenance efficiency and device stability.

[0043] Furthermore, an elastic sealing gasket is provided on the outer wall surface around the operating hole, and a sealing pressure edge that cooperates with the elastic sealing gasket is provided on the cover surface of the drawer-type structure (i.e. the side of the cover facing the drawer opening mentioned above). After the filter screen 4 is completely pushed into the water filtration chamber 3, the cover surface abuts against the outer wall surface, and the sealing pressure edge can fit tightly with the elastic sealing gasket and form a seal through elastic compression, thereby preventing the liquid in the water filtration chamber 3 from leaking from the operating hole.

[0044] Specifically, the elastic sealing gasket has a ring-shaped structure and is made of elastic materials such as rubber, with a rectangular or trapezoidal cross-section. The elastic sealing gasket is fixedly pasted or embedded on the outer wall of the water tank body 1 around the operating hole. The inner diameter of the elastic sealing gasket is slightly smaller than the diameter of the operating hole, and the outer diameter is larger than the diameter of the operating hole, forming a sealing barrier around the operating hole.

[0045] The sealing edge is an annular flange protruding from the edge of the drawer-type filter screen 4 cover into the water filtration chamber 3. The material of the sealing edge is the same as that of the filter screen 4 frame (such as metal or rigid plastic), and the cross-section is right-angled or rounded. The position of the sealing edge corresponds to the elastic sealing gasket, and the height of the flange is slightly less than the thickness of the elastic sealing gasket.

[0046] When the filter screen 4 is fully pushed into the water filtration chamber 3, the cover surface fits against the outer wall surface around the operating hole, the sealing edge is aligned with the elastic sealing gasket and pressure is applied, causing the elastic sealing gasket to deform under pressure, filling the gap between the sealing edge and the outer wall surface, forming a tight surface contact seal.

[0047] When installing filter screen 4, push it into the water filtration chamber 3 along the support protrusion until the cover is in contact with the outer wall. At this time, the sealing edge will naturally squeeze the elastic sealing gasket to complete the seal. When removing filter screen 4, pull the cover outward, the sealing edge will separate from the elastic sealing gasket, the seal will be released, and filter screen 4 can be pulled out smoothly.

[0048] By combining the elastic sealing gasket with the sealing edge, and utilizing the deformation of the elastic material to compensate for the gap, it is possible to effectively prevent sewage in the filter chamber 3 from leaking through the gap between the operating hole and the cover of the filter screen 4, thus preventing unfiltered sewage from flowing directly into the water tank body 1 and affecting the water quality. At the same time, it prevents water waste and pollution of the surrounding environment. In addition, the elastic sealing gasket can buffer the contact pressure between the cover and the outer wall, reduce component wear, and extend the service life of the device.

[0049] Optionally, a return water trough 5 is provided on the outer wall of the water tank body 1. The return water trough 5 is located below the operation hole and is connected to the water tank body 1. When the filter screen 4 is pulled out, the liquid falling on the filter screen 4 can flow back to the water tank body 1 through the return water trough 5. The top of the return water trough 5 is covered with an interception net 51, which is used to prevent impurities from entering the return water trough 5 and the water tank body 1.

[0050] For details, please refer to Figure 1In the illustrated embodiment, a return water trough 5 is provided on the right outer wall of the water tank body 1. The left side wall of the return water trough 5 is coplanar with the right side wall of the water tank body 1, and the coplanar surface is open or has a through hole. The right side wall of the return water trough 5 is sloped from top to bottom towards the bottom of the water tank body 1. The top wall of the return water trough 5 is open or has a through hole. When the filter screen 4 is pulled out, the water on the filter screen 4 falls onto the top wall of the return water trough 5 and can flow directly into the return water trough 5, and further flow back to the water tank body 1 through the return water trough 5. The sloped right side wall of the return water trough 5 can guide the water entering the return water trough 5 to flow towards its left side wall.

[0051] Continue to refer to Figure 1 An intercepting net 51 is installed on the top wall of the return water tank 5. The edge of the intercepting net 51 is fixed to the edge of the opening of the return water tank 5 (such as by snap-fit ​​or bolt connection) and can completely cover the opening. The intercepting net 51 is a mesh structure (such as metal mesh or high-strength plastic mesh) with a small mesh size (not larger than the smallest filter hole of the filter screen 4). The intercepting net 51 and the return water tank 5 form a "blocking above and collecting below" combination structure. The intercepting net 51 covers the return water tank 5, and the two are spatially corresponding to each other, ensuring that the liquid falling from the filter screen 4 first passes through the intercepting net 51 and then enters the return water tank 5.

[0052] When the drawer-type filter screen 4 is pulled out for cleaning or replacement, the liquid (containing a small amount of residual impurities) adhering to the surface of the filter screen 4 will drip onto the interceptor screen 51 and be blocked by the interceptor screen 51. The liquid flows through the mesh of the interceptor screen 51 into the return water tank 5, and then flows back to the water tank body 1 through the return water tank 5. The impurities carried in the liquid are intercepted by the interceptor screen 51 and remain on the screen surface, preventing them from entering the return water tank 5 and the water tank body 1. Since the interceptor screen 51 is directly exposed, it can be cleaned at any time. If necessary, the interceptor screen 51 can also be removed for cleaning or replacement.

[0053] The return water tank 5 can recover the liquid dripping when the filter screen 4 is removed, avoiding water waste and preventing liquid from dripping around the equipment and causing environmental pollution. The interception net 51 can effectively block impurities from flowing back with the liquid, preventing impurities from re-entering the water tank body 1 and contaminating the filtered water, ensuring the cleanliness of the water in the storage tank and ensuring the effectiveness of water recycling. The combination of these two features achieves liquid recovery while avoiding secondary pollution, improving the environmental friendliness and practicality of the device.

[0054] Optionally, the side wall of the water filtration chamber 3 is provided with an overflow hole, which is located higher than the filter screen 4; when the liquid level in the water filtration chamber 3 is higher than the preset position, it can be guided through the overflow hole.

[0055] The overflow hole is designed to address any abnormal rise in liquid level that may occur in the filter chamber 3, ensuring the stability and safety of the device's operation.

[0056] When the sewage level in the filtration chamber 3 rises to the preset position (i.e., the height of the overflow hole) due to excessive inflow or filter screen blockage, the excess sewage can be discharged from the filtration chamber 3 through the overflow hole. This prevents sewage from overflowing from the gaps between the filtration chamber 3 and other structures, or from damaging the filtration chamber 3 and filter screen 4 due to excessive pressure. Simultaneously, it ensures that incompletely filtered sewage with excessive levels can be orderly guided to the main body of the water tank 1, and subsequently re-enter the filtration chamber 3 for treatment along with the water circulation within the tank. This prevents overload of the device and reduces resource waste and environmental impact caused by sewage leakage.

[0057] Optionally, a level gauge 6 is provided inside the water tank body 1. The level gauge 6 is used to detect the liquid level inside the water tank body 1 so as to indicate whether to add or drain water.

[0058] The purpose of the level gauge 6 is to monitor the water level in the main body of the water tank 1 in real time, so as to ensure the normal operation of the water storage tank and the rational use of water resources.

[0059] By detecting the liquid level inside the water tank 1, when the liquid level is lower than the preset value, it can indicate that water needs to be added (such as adding fresh water or wastewater from the pre-treated stage), to avoid insufficient water supply affecting the water demand for subsequent cleaning or return. When the liquid level is higher than the preset value, it can indicate that water needs to be drained, to prevent water from overflowing from the water tank 1 and causing waste or pollution to the surrounding environment, while ensuring that the water storage tank has enough space to accommodate newly entering water, thereby maintaining the balance and stability of the entire water circulation system.

[0060] Optionally, a water quality monitor is installed inside the water tank body 1. The water quality monitor is used to monitor the turbidity of the water in the water tank body 1, thereby ensuring that the water stored in the water tank body 1 can be used normally for cleaning or recycling.

[0061] The purpose of setting up the water quality monitoring instrument is to monitor the cleanliness of the filtered water in the main body of the water tank 1 in real time, so as to ensure the reliability of the circulating water.

[0062] By monitoring the turbidity of the water, it is possible to accurately determine whether the filtered water meets the water quality requirements for cleaning or recirculation. When the turbidity of the water exceeds the preset standard, it can promptly prompt the need to clean or replace the filter screen 4, or clean the water tank body 1, to avoid problems such as equipment blockage and scratches on processed parts during circulation due to substandard water quality. This ensures that the stored water always meets the needs of subsequent processes, maintaining the stability of the processing flow and product quality.

[0063] Optionally, the water tank body 1 is provided with at least three sets of water outlet pipes 7 on the side away from its inlet pipe 2, and the at least three sets of water outlet pipes 7 are spaced apart along the height direction; valves are provided on the water outlet pipes 7.

[0064] The purpose of designing at least three sets of water outlet pipes 7 spaced apart along the height direction is to adapt to water demand at different liquid levels and improve the flexibility and practicality of the water storage tank.

[0065] Specifically, since the liquid level in the water tank 1 changes dynamically with the water intake and usage process, at least three sets of water outlet pipes 7 are spaced apart along the height direction to correspond to high, medium, and low liquid levels respectively. When the liquid level is high, the upper water outlet pipe can be opened; when the liquid level drops to the medium or low level, the corresponding middle or lower water outlet pipe can be switched on to ensure stable water output at different water levels. This avoids the water outlet pipe from running dry due to low liquid level, preventing normal water supply, or limiting water usage scenarios due to a single water outlet pipe, thus meeting the water volume and water intake height requirements of different processes such as cleaning or recirculation.

[0066] A valve is installed on the water outlet pipe 7, which can be used to control the opening and closing of each water outlet pipe 7. This allows for flexible adjustment of the water outlet status according to actual water demand, preventing water from flowing out naturally when no water is needed and causing waste. At the same time, by closing some water outlet pipes 7, water can be drawn from the target water outlet pipe 7 in a concentrated manner, ensuring stable water pressure and flow.

[0067] More specifically, when water needs to be drawn from the outlet pipe 7 at a certain height, the valve on the corresponding outlet pipe 7 is opened, and the water can flow out through the outlet pipe 7; when no water is needed or the water drawing height needs to be changed, the current valve is closed, and then the valves of other outlet pipes 7 at different heights are opened according to the liquid level.

[0068] Optionally, the bottom of the pool body 1 is an inclined structure, sloping downwards from the outlet side to the inlet side, so as to guide impurities to settle at a position away from the outlet pipe 7.

[0069] The purpose of the sloping design is to optimize the deposition path of impurities in the water tank body 1 and avoid impurities interfering with the normal water output of the outlet pipe 7.

[0070] For details, please refer to Figure 1 In the illustrated embodiment, the water outlet of the water tank body 1 is located on the left side. At this time, the bottom of the water tank body 1 is inclined from left to right. In this way, impurities remaining in the water falling to the bottom of the tank (such as trace amounts of oilstone powder, debris, etc. that are not completely intercepted by the filter screen 4) can move and settle towards the lower inclined position under the action of gravity, thereby moving away from the water outlet pipe 7 located on the water outlet side.

[0071] This design reduces the accumulation of impurities near the outlet pipe 7, preventing impurities from being sucked into the outlet pipe 7 and clogging the pipe or affecting the cleanliness of the circulating water, ensuring that the outlet pipe 7 can stably output water that meets the requirements, and guaranteeing the quality of water for subsequent cleaning or return.

[0072] Optionally, the pool body 1 is also provided with a drain pipe 8, which is directly opposite the sinking position so as to discharge the deposited impurities; the drain pipe 8 is provided with a valve.

[0073] The purpose of the drain pipe 8 is to facilitate the discharge of impurities deposited inside the water tank body 1, and to prevent the long-term accumulation of impurities from affecting the normal operation of the water tank and the water quality.

[0074] With the inclined structure of the bottom of the water tank body 1, impurities will be deposited to the lower position (sinking position) under the action of gravity. The sewage pipe 8 is located at the sinking position, which can directly discharge the deposited impurities, prevent impurities from accumulating more and more at the bottom of the tank and causing secondary pollution of the water body, ensure the cleanliness of the inside of the water tank body 1, and thus ensure the quality of the circulating water and the stable operation of the device.

[0075] The sewage pipe 8 is equipped with a valve, which is used to control the opening and closing of the sewage pipe 8 so as to flexibly adjust the timing of sewage discharge according to the sedimentation of impurities, prevent water from being lost through the sewage pipe 8 when sewage discharge is not required, and control the sewage flow rate and rhythm to ensure that impurities are completely discharged.

[0076] Specifically, when it is necessary to clean the impurities deposited at the bottom of the pool, open the valve on the drain pipe 8. The deposited impurities will be discharged through the drain pipe 8 along with some of the water (depending on the situation, such as when the pool is empty, manually flushing or sweeping can be used to promote the discharge of impurities from the bottom of the pool through the drain pipe 8). After the sewage discharge is completed, close the valve to prevent the clean water in the pool body 1 from continuing to flow out, ensuring the normal water storage and supply functions of the water storage pool.

[0077] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A stepped-type post-treatment storage tank for wastewater from oilstone surface processing, characterized in that, include: The water tank body (1) has a water inlet pipe (2) on one side. A water filtration chamber (3) is located inside the water tank body (1). The water inlet pipe (2) is connected to the water filtration chamber (3). At least two layers of filter screens (4) are arranged inside the water filtration chamber (3) along the water flow direction. The pore size of each layer of filter screens (4) decreases layer by layer along the water flow direction. The circulating water can enter the filter chamber (3) through the water inlet pipe (2), and after being filtered layer by layer by the filter screen (4), it flows to the bottom of the pool body (1) for cleaning or return to the oilstone surface processing equipment.

2. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 1, characterized in that, The filter screen (4) is detachably installed inside the water filtration chamber (3).

3. The stepped filter oilstone surface processing wastewater post-treatment storage tank according to claim 2, characterized in that, One side wall of the water tank body (1) and one side wall of the water filter chamber (3) share the same wall, and an operation hole is provided on the shared wall surface; The filter screen (4) is configured as a drawer and is slidably disposed in the water filtration chamber (3). The filter screen (4) can be pulled out or pushed in through the operation hole.

4. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 3, characterized in that... The inner wall of the water filtration chamber (3) is provided with at least two layers of support protrusions. The support protrusions extend toward the operation hole. Each layer of the support protrusions is used to support a set of filter screens (4). The filter screens (4) are provided with rollers on the back of the support protrusions. The filter screens (4) are slidably mounted on the support protrusions by the rollers. The support protrusions can bear the weight of the filter screens (4) and prevent the filter screens (4) from sagging or shifting due to gravity during use. And / or, an elastic sealing gasket is provided on the outer wall surface around the operating hole, and a sealing pressure edge that cooperates with the elastic sealing gasket is provided on the cover surface of the drawer-type structure. After the filter screen (4) is completely pushed into the water filtration chamber (3), the cover surface abuts against the outer wall surface, and the sealing pressure edge can fit tightly with the elastic sealing gasket and form a seal through elastic compression, thereby preventing the liquid in the water filtration chamber (3) from leaking from the operating hole.

5. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 3, characterized in that... The outer wall of the water tank body (1) is provided with a return water trough (5), which is located below the operation hole and communicates with the water tank body (1). When the filter screen (4) is pulled out, the liquid falling on the filter screen (4) can flow back to the water tank body (1) through the return water tank (5). The top of the return water tank (5) is covered with an interception net (51), which is used to prevent impurities from entering the return water tank (5) and the water pool body (1).

6. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 1, characterized in that, The side wall of the water filtration chamber (3) is provided with an overflow hole, and the overflow hole is located higher than the filter screen (4). When the liquid level in the filter chamber (3) is higher than the preset position, it can be guided through the overflow hole.

7. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 1, characterized in that, The water tank body (1) is equipped with a level gauge (6), which is used to detect the liquid level in the water tank body (1) so as to indicate whether to add or drain water. And / or, a water quality monitoring instrument is provided inside the water tank body (1), which is used to monitor the turbidity of the water in the water tank body (1), thereby ensuring that the water stored in the water tank body (1) can be used normally for cleaning or recycling.

8. The post-treatment storage tank for wastewater from the step-type filtration system for oilstone surface processing as described in claim 1, characterized in that, The water tank body (1) is provided with at least three sets of water outlet pipes (7) on the side away from its water inlet pipe (2), and the at least three sets of water outlet pipes (7) are spaced apart along the height direction; A valve is provided on the water outlet pipe (7).

9. The stepped-type filter oilstone surface processing wastewater post-treatment storage tank according to any one of claims 1-8, characterized in that, The bottom of the pool body (1) is an inclined structure, which slopes downward from the water outlet side to the water inlet side, so as to guide impurities to be deposited at a position away from the water outlet pipe (7).

10. The stepped filter oilstone surface processing wastewater post-treatment storage tank according to claim 9, characterized in that, The pool body (1) is also provided with a sewage pipe (8), which is directly facing the sinking position in order to discharge the deposited impurities; The sewage pipe (8) is equipped with a valve.

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