Impurity recycling and filtering tank
By designing an impurity recovery filter tank, oil and metal debris are separated by gravity sedimentation and density differences. This solves the problem that existing technologies require large amounts of liquid and complex processes for oil cleaning, and enables the recycling of alkaline solutions and improves production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-13
AI Technical Summary
Existing technologies for oil stain cleaning require large amounts of liquid and involve complex processes, resulting in high production costs and low efficiency.
An impurity recovery filter tank was designed, including a tank body, an inlet pipe, an outlet pipe, a pipe body, and a recovery pipe. It utilizes gravity sedimentation and density differences to separate oil and metal debris, thereby realizing the recycling of alkaline solution.
By simplifying processes, production costs were reduced, production continuity was ensured, equipment maintenance was made convenient, and production efficiency was improved.
Smart Images

Figure CN223988156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an impurity recovery filter tank, specifically an impurity recovery filter tank capable of removing floating impurities from liquid alkali. Background Technology
[0002] After metal parts undergo cutting and grinding, their surfaces are often covered with metal shavings and oil. To clean these impurities, a diluted alkaline solution is typically used; this process is called alkaline washing. The purpose of alkaline washing is to remove impurities, grease, and oxide layers from the metal surface. Used alkaline solutions contain a large amount of oil and metal shavings. To reuse these used alkaline solutions, the impurities must first be removed. In short, metal parts need to be cleaned with alkaline solutions after processing to remove surface impurities, and used alkaline solutions containing impurities must be treated to remove oil and metal shavings before reuse. See CN221868835U - Chinese Utility Model Patent: Intelligent Alkaline Solution Generation Equipment. This patent discloses opening a backwash pipe and a high-pressure spray pipe, with the backwash pipe injecting clean water from the outer wall of the filter cover inwards, causing non-metallic impurities adhering to the inner wall of the filter cover to fall off. However, the aforementioned patent requires a large amount of liquid for oil removal, and the process is complex. Utility Model Content
[0003] The main objective of this invention is to provide an impurity recovery filter tank to solve the problems of existing technologies that require large amounts of liquid for oil stain cleaning and involve complex processing procedures.
[0004] To achieve the above objectives, this utility model provides an impurity recovery filter tank, including a tank body, a first open and detachable cap at the top of the tank body, an inlet pipe and an outlet pipe respectively connected to the bottom of the two sides of the tank body, and also including a pipe body and a recovery pipe;
[0005] The pipe is installed inside the tank, and its bottom end is coaxially fixed to the inner bottom wall of the tank.
[0006] The height of the top of the tube is higher than the height of the liquid outlet of the inlet pipe and the liquid inlet of the outlet pipe, and forms an annular space with the inner ring wall of the tank. An annular shell is placed in the annular space, and the top wall of the annular shell is the second opening.
[0007] The height of the second opening is lower than the height of the liquid outlet of the inlet pipe and the liquid inlet of the outlet pipe.
[0008] One end of the recovery pipe is inserted into the bottom wall of the tank and connected to the pipe body.
[0009] A preferred embodiment is to have an annular groove coaxially formed at the top of the tube, and to insert an adjusting tube coaxially into the annular groove. The height of the adjusting tube in the annular groove is adjusted by fasteners.
[0010] A preferred embodiment is that the fastener includes multiple bolts, and multiple threaded holes are opened on the top circumference of the tube body, with each threaded hole being screwed with a bolt, and the bolt abutting against the adjusting tube.
[0011] In a preferred embodiment, the impurity recovery filter tank also includes multiple connectors, each connector including an upper support, a lower support, and a nut;
[0012] The upper support is fixedly connected to the outer ring wall of the cap, and the lower support is fixedly connected to the outer ring wall of the tank.
[0013] A horizontal bar is fixed on the lower support, a ring is fitted on the horizontal bar, a threaded rod is fixed on the ring, a nut is screwed to the threaded rod and can abut against the upper support, and the nut is fixedly connected to an arc-shaped handle.
[0014] A preferred embodiment is that both the upper and lower supports include two parallel ear plates, one end of which is fixedly connected to the outer wall of the tank or the outer ring wall of the cap.
[0015] A preferred embodiment is that multiple connecting rods are coaxially fixed around the inner wall of the annular shell, and an annular plate is fixedly installed at the end of the connecting rods away from the annular shell, with the annular plate being coaxially arranged with the annular shell.
[0016] A preferred solution is to install solenoid valves on both the inlet and outlet pipes, and a level controller on the inner wall of the tank.
[0017] In a preferred embodiment, the impurity recovery filter tank also includes a frame, the top of which is fixedly connected to the tank body.
[0018] The beneficial effects of the above scheme are:
[0019] Metal parts that have undergone cutting and grinding often have a large amount of metal debris and oil residue on their surface. Due to the design of the outlet height of the inlet pipe, which is lower than the top of the pipe body, the alkaline solution naturally enters the annular space between the tank and the pipe body first. Within this annular space, the alkaline solution flows slowly, and larger particles such as metal debris gradually settle to the bottom of the annular shell under the influence of gravity. Meanwhile, lighter impurities such as oil, due to their lower density, float on the surface. As the alkaline solution continues to flow in, the liquid level gradually rises. When the liquid level is slightly higher than the top of the pipe body, the lighter impurities such as oil flow into the pipe body. Subsequently, these impurities enter the next process through a recovery pipe connected to the pipe body for further treatment. After initial sedimentation and a certain degree of oil separation, the relatively clean alkaline solution is discharged from the outlet pipe and reused in the cleaning of metal parts, achieving the recycling of the alkaline solution and significantly reducing production costs. When it is necessary to clean metal shavings and other impurities that have settled inside the annular shell, operators can simply open the removable cap on top of the tank and remove the annular shell for cleaning. The entire process is simple and convenient, ensuring production continuity while facilitating equipment maintenance and management. Attached Figure Description
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0022] Figure 2 yes Figure 1 Enlarged structural diagram of region A in the middle;
[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0024] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;
[0025] Figure 5 This is a three-dimensional structural diagram of the tube body of this utility model.
[0026] Explanation of reference numerals in the attached figures
[0027] 1. Solenoid valve; 10. Tank body; 11. Inlet pipe; 12. Outlet pipe; 13. Annular space; 20. Cap; 30. Pipe body; 31. Annular groove; 40. Annular shell; 41. Second opening; 42. Connecting rod; 43. Ring plate; 50. Recovery pipe; 60. Adjusting pipe; 61. Fastener; 62. Bolt; 601. Threaded hole; 70. Connector; 71. Upper support; 72. Lower support; 73. Nut; 74. Horizontal bar; 75. Ring body; 76. Threaded rod; 77. Arc handle; 700. Ear plate; 80. Frame. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example
[0029] like Figures 1-5 As shown, this embodiment provides an impurity recovery filter tank, including a tank body 10 and a first open, removable cap 20 on the top of the tank body 10, as shown. Figure 2 As shown, the impurity recovery filter tank also includes multiple connectors 70, each connector 70 including an upper support 71, a lower support 72, and a nut 73. The upper support 71 is fixedly connected to the outer annular wall of the cap 20, and the lower support 72 is fixedly connected to the outer annular wall of the tank body 10. A horizontal rod 74 is fixedly mounted on the lower support 72, and a ring 75 is fitted on the horizontal rod 74. A threaded rod 76 is fixedly mounted on the ring 75, and the nut 73 is screwed to the threaded rod 76, and the nut 73 can abut against the upper support 71. The nut 73 is fixedly connected to an arc-shaped handle 77. Both the upper support 71 and the lower support 72 include two parallel ear plates 700, one end of which is fixedly connected to the outer wall of the tank body 10 or the outer annular wall of the cap 20. The operator holds the arc-shaped handle 77 and rotates it. The arc-shaped handle 77 drives the nut 73 to rotate. Since the nut 73 is screwed onto the threaded rod 76, and the threaded rod 76 is fitted onto the horizontal rod 74 of the lower support 72 via the ring 75, the nut 73 moves upward along the threaded rod 76 as it rotates. Continuing to rotate the arc-shaped handle 77 causes the nut 73 to gradually approach and eventually abut against the upper support 71. At this point, the upper support 71 experiences an upward force from the nut 73, which helps to secure the connection between the cap 20 and the tank body 10, ensuring a good seal for the tank body 10. The bottom of both sides of the tank body 10 is connected to the inlet pipe 11 and the outlet pipe 12, respectively. Figures 3-5As shown, the impurity recovery filter tank also includes a pipe body 30 and a recovery pipe 50. The pipe body 30 is disposed inside the tank body 10, and its bottom end is coaxially fixed to the inner bottom wall of the tank body 10. The height of the top end of the pipe body 30 is higher than the height of the liquid outlet of the inlet pipe 11 and the liquid inlet of the outlet pipe 12, and the space between the pipe body 30 and the inner annular wall of the tank body 10 forms an annular space 13. An annular shell 40 is placed in the annular space 13. The top wall of the annular shell 40 is a second opening 41. Multiple connecting rods 42 are coaxially fixed to the inner circumference of the annular shell 40. An annular plate 43 is fixed to the end of the connecting rod 42 away from the annular shell 40, and the annular plate 43 is coaxially arranged with the annular shell 40. The arrangement of the annular body 75 facilitates the handling of the annular shell 40. The height of the second opening 41 is lower than the height of the liquid outlet of the inlet pipe 11 and the liquid inlet of the outlet pipe 12. One end of the recovery pipe 50 is inserted into the bottom wall of the tank 10 and connected to the pipe body 30.
[0030] Metal parts that have undergone cutting and grinding often have a large amount of metal debris and oil residue on their surface. Due to the design of the outlet height of the inlet pipe 11, which is lower than the top of the pipe body 30, the alkaline solution naturally enters the annular space 13 between the tank 10 and the pipe body 30 first. Within this annular space 13, the alkaline solution flows slowly, and larger particles such as metal debris gradually settle to the bottom of the annular shell 40 under the influence of gravity. At the same time, lighter impurities such as oil, due to their lower density, float on the surface. As the alkaline solution continues to flow in, the liquid level gradually rises. When the liquid level is slightly higher than the top of the pipe body 30, the lighter impurities such as oil will flow into the pipe body 30. Subsequently, these impurities enter the next process through the recovery pipe 50 connected to the pipe body 30 for further processing. After preliminary sedimentation and a certain degree of oil separation, the relatively clean alkaline solution is discharged from the outlet pipe 12 and reused in the cleaning of metal parts, realizing the recycling of the alkaline solution and greatly reducing production costs. When it is necessary to clean metal shavings and other impurities that have settled inside the annular shell 40, the operator only needs to easily open the removable cap 20 on the top of the tank 10 and remove the annular shell 40 for cleaning. The whole process is simple and convenient, ensuring the continuity of production and facilitating equipment maintenance and management.
[0031] like Figure 3 , Figure 5 As shown, an annular groove 31 is coaxially formed at the top end of the tube body 30. An adjusting tube 60 is coaxially inserted into the annular groove 31. The height of the adjusting tube 60 in the annular groove 31 is adjusted by fasteners 61. The fasteners 61 include multiple bolts 62. Multiple threaded holes 601 are formed on the top circumference of the tube body 30. Each threaded hole 601 is screwed with a bolt 62, and the bolt 62 abuts against the adjusting tube 60.
[0032] If it is necessary to adjust the flow rate of the alkali solution flowing into the pipe body 30 according to parameters such as the impurity content and oil concentration of the current alkali solution, the height of the regulating pipe 60 can be adjusted. The operator first loosens several bolts 62, separating them from the regulating pipe 60. At this point, the regulating pipe 60 can move freely up and down within the annular groove 31. Depending on the actual needs, the regulating pipe 60 is moved up or down to a suitable height. After adjusting the height of the regulating pipe 60, the several bolts 62 are retightened until they abut against the regulating pipe 60, fixing the regulating pipe 60 at its current height within the annular groove 31.
[0033] like Figure 1 As shown, both the inlet pipe 11 and the outlet pipe 12 are equipped with solenoid valves 1. The solenoid valves 1 in this invention utilize existing technology and will not be described in detail. A level controller (not shown) is installed on the inner wall of the tank body 10. The level controller communicates with both solenoid valves 1. The level controller also utilizes existing technology and will not be described in detail; selectable models include: UQK series, E+H FTL50, and Honeywell ST300 series. The cooperation between the level controller and the solenoid valves 1 achieves automated control of the equipment operation. The inlet and outlet are automatically controlled according to changes in the liquid level within the tank body 10, eliminating the need for frequent manual operation and improving production efficiency and stability. The cooperation between the level controller and the solenoid valves 1 ensures that the alkali solution level is always slightly higher than the top of the pipe body 30. The impurity recovery filter tank also includes a frame 80, the top of which is fixedly connected to the tank body 10.
[0034] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
Claims
1. An impurity recovery filter tank comprising a tank body, a first openable and closable cap on the top of the tank body, and a liquid inlet pipe and a liquid outlet pipe respectively connected to the middle bottom of the two sides of the tank body, characterized in that, Also include: The pipe body is arranged in the tank body, and the bottom end is coaxially fixed to the inner bottom wall of the tank body; The top end of the pipe body is higher than the height of the liquid outlet of the liquid inlet pipe and the liquid inlet of the liquid outlet pipe, and the space between the inner ring wall of the tank body forms an annular space, and the annular shell is placed in the annular space, and the top wall of the annular shell is a second opening; The height of the second opening is lower than the height of the liquid outlet of the liquid inlet pipe and the liquid inlet of the liquid outlet pipe; The recovery pipe is communicated with the pipe body through the bottom wall of the tank body.
2. The contaminant recovery canister of claim 1, wherein, The top end of the pipe body is coaxially provided with an annular groove, and the adjusting pipe is coaxially inserted into the annular groove.
3. The contaminant recovery canister of claim 2, wherein, The fastener includes a plurality of bolts, and a plurality of threaded holes are formed in the top circumference of the pipe body.
4. The contaminant recovery canister of claim 1, wherein, Each threaded hole is screwed with a bolt, and the bolt abuts against the adjusting pipe. It also includes a plurality of connecting pieces, each of which includes an upper support, a lower support and a nut. The upper support is fixedly connected with the outer ring wall of the cap, and the lower support is fixedly connected with the outer ring wall of the tank body.
5. The contaminant recovery canister of claim 4, wherein, The horizontal rod is provided on the lower support, and the ring body is sleeved on the horizontal rod.
6. The contaminant recovery canister of claim 1, wherein, The nut is screwed with the threaded rod and can abut against the upper support.
7. The contaminant recovery canister of claim 1, wherein, The upper support and the lower support each include two parallel ear plates, one end of each of the two ear plates is fixedly connected with the outer wall of the tank body or the outer ring wall of the cap.
8. The contaminant recovery canister of claim 1, wherein, The inner wall of the annular shell is coaxially and circumferentially provided with a plurality of connecting rods. The connecting rod is fixedly provided with a ring plate at the end away from the annular shell. The ring plate is coaxially arranged with the annular shell. The liquid inlet pipe and the liquid outlet pipe are provided with electromagnetic valves, and the inner wall of the tank body is provided with a liquid level controller. It also includes a rack, and the top of the rack is fixedly connected with the tank body.
Citation Information
Patent Citations
Intelligent alkali liquor generation equipment
CN221868835U