Automatic coagulation filtering device for cutting fluid treatment

Abstract

The utility model relates to an automatic coagulation filtering device for cutting fluid treatment, which comprises a coagulation box and a filtering box which are sequentially arranged, and the coagulation box is connected with the filtering box through an output pipeline; a coagulation stirrer and a plurality of medicine injection pipelines are arranged in the coagulation box; a solid-liquid partition plate is arranged at the bottom of the filter box and divides the filter box into a clear liquid area and a waste residue area, a clear liquid opening is outwards formed in the clear liquid area, and a residue discharging opening is outwards formed in the waste residue area; a rotating shaft is arranged above the solid-liquid partition plate, the rotating shaft is in transmission connection with a driving mechanism arranged on the filter box, the rotating shaft is connected with at least two filter mechanisms through hinged supports, the filter mechanisms are filter screens, the filter screens jointly form a circular filter surface, and rotating mechanisms are arranged between the filter screens and the rotating shaft. The device disclosed by the utility model has the advantages that the integrated treatment of demulsification, coagulation, filtration and deslagging steps can be realized, and the stability of the coagulation step and the treatment precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to an automatic coagulation and filtration device for cutting fluid treatment. Background Art

[0002] Cutting emulsions used in machining contain a variety of chemical ingredients, including water, mineral oil, fatty acids, emulsifiers, rust inhibitors, preservatives, defoamers, extreme pressure agents, lubricants, surfactants, and amino alcohols. Waste emulsions after use contain heavy metals, ash, bacteria, decay products, cleaning fluids, and more. If untreated cutting fluid wastewater is discharged into natural water bodies, an oil film will form on the water surface, causing oxygen deficiency and threatening the growth of aquatic organisms. Furthermore, the oil and fat in cutting fluid wastewater has a strong penetrating ability and can penetrate the soil into groundwater, thereby contaminating groundwater sources. Additives and metal shavings in the wastewater, once entering the water cycle, can enter the human body through the food chain, posing a risk of cancer and endangering human health. Therefore, cutting fluid wastewater is considered hazardous waste and cannot be discharged directly, requiring hazardous waste treatment.

[0003] In this context, some domestic scholars began to develop cutting fluid treatment processes to make it meet emission standards or further recycle and utilize. The treatment methods are divided into three categories: physical, chemical and biological methods. The chemical method mainly includes demulsification, coagulation, electrolysis, secondary coagulation and RO membrane reverse osmosis. Coagulation includes two processes: coagulation and flocculation. Coagulation is mainly the process of adding PAC agents (coagulants) to destabilize the demulsified cutting fluid and generate tiny aggregates. Flocculation is mainly the process of adding PAM agents (flocculants) to destabilize the tiny suspended matter in the cutting fluid into large flocs, which makes it easier to remove the flocs from the water by sedimentation or filtration.

[0004] In the prior art, the coagulation step is usually carried out in the flocculation box of the screw stacking machine. After the flocculation reaction is completed in the flocculation box, it is necessary to inject the original liquid or coagulant and flocculant again to make it overflow into the dewatering cylinder and the pressing cylinder for solid-liquid separation. This overflow method causes the solid-liquid separation solution to contain uncoagulated cutting fluid, or a small amount of coagulant / flocculating agent, which not only affects the effect of the subsequent electrolysis step, but also affects the ratio of the cutting fluid original liquid and the coagulant / flocculating agent in the flocculation box, thereby affecting the subsequent flocculation step. In addition, because the cutting fluid wastewater has the characteristics of complex composition, and the types of cutting fluids used by different mechanical processing manufacturers are also different, the floccules generated using the same coagulant / flocculating agent are also different. Some floccules can smoothly discharge solids after passing through the dewatering cylinder and the pressing cylinder, while others become tiny suspended matter and dissolve in the clear liquid to enter the next process. These hidden dangers will affect the treatment effect and stability of the subsequent steps. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide an automatic coagulation and filtration device for cutting fluid treatment that can realize the integrated processing of demulsification, coagulation, filtration and slag discharge steps, and improve the stability and processing accuracy of the coagulation step.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An automatic coagulation and filtration device for cutting fluid treatment, comprising a coagulation box and a filtration box arranged accordingly, wherein the coagulation box and the filtration box are connected via an output pipe;

[0008] The coagulation box is provided with a coagulation stirrer and a plurality of drug injection pipes;

[0009] A solid-liquid partition is provided at the bottom of the filter box, dividing the filter box into a clear liquid area and a waste residue area, the clear liquid area is provided with a clear liquid outlet, and the waste residue area is provided with a slag discharge outlet; a rotating shaft is provided above the solid-liquid partition, the rotating shaft is in transmission connection with a driving mechanism provided on the filter box, at least two filtering mechanisms are connected to the rotating shaft via a hinge seat, the filtering mechanism is a filter screen, the filter screens together form a circular filtering surface, and a rotating mechanism is provided between the filter screens and the rotating shaft;

[0010] One end of the output pipe is arranged through the bottom of the coagulation box, and the other end extends into the filter box and is connected with a downwardly arranged elbow, which is arranged facing the clear liquid area. A drain valve is arranged on the output pipe.

[0011] During use, the cutting fluid concentrate, coagulant and flocculation agent are injected into the coagulation box in turn through the injection pipe to carry out demulsification reaction and coagulation reaction. The reacted solution enters the filter box through the output pipe. After filtering through a filter screen located above the clear liquid area, the clear liquid is discharged through the clear liquid port. When the filter residue of the filter screen accumulates to a certain amount, the drive mechanism is started to drive the rotating shaft to rotate, and the filter screen is rotated to above the waste residue area, and the other filter screen is rotated to above the clear liquid area to continue filtering; the filter screen located above the waste residue area is driven by the rotating mechanism to tilt downward, and the waste residue inside it will be discharged from the residue discharge port; this solution can carry out integrated processing, simplify the process equipment of cutting fluid processing, and effectively achieve the effect of thorough solid-liquid separation.

[0012] As an optimization, the rotating mechanism includes a pull-down assembly and a reset assembly, the pull-down assembly includes a slide groove radially arranged at the bottom of the filter, a filter slider is slidably arranged in the slide groove, a spring groove is provided on the rotating shaft, a compression spring is provided in the spring groove, the two ends of the compression spring are respectively connected to the armature and the electromagnet, a connecting rod is rotatably provided on the armature, and the connecting rod is rotatably connected to the filter slider;

[0013] The reset assembly includes a tension spring arranged in the rotating shaft, and two ends of the tension spring are respectively fixedly connected to the two filter screens.

[0014] In this way, the on and off of the electromagnet can realize the movement of the armature in the spring groove, and then drive the connecting rod to pull the filter slider to move in the slide groove, realize the rotation of the filter along the hinge seat, and form a tilting action of the filter. After the tilting is completed, when the electromagnet is de-energized, the compression spring is released, and the reset force of the tension spring is cooperated to reset the filter.

[0015] As an optimization, the driving mechanism includes a ring gear coaxially arranged with the rotating shaft, the ring gear is connected to the rotating shaft by a key, the rotating shaft is rotatably arranged on the filter box, a driving gear is engaged in the ring gear, and the driving gear is transmission-connected to the steering motor arranged on the filter box.

[0016] In this way, the steering motor rotates, driving the drive gear to rotate, and then engaging the drive ring gear to rotate, and realizing the rotation of the rotating shaft. In this way, the output of the steering motor can be decelerated and transmitted to the rotating shaft, and the rotation angle can be accurately controlled to ensure that the waste slag can be accurately dumped into the waste slag area.

[0017] As an optimization, a movable cover is further provided on the top of the coagulation box, and the movable cover is hinged on the coagulation box.

[0018] This makes it easier to check the internal conditions of the box during debugging and maintenance.

[0019] As an optimization, an emptying pipe is provided on the side of the bottom of the coagulation box, and an emptying valve is provided on the emptying pipe.

[0020] In this way, when debugging or cleaning the device, the waste liquid in the coagulation tank can be discharged through the drain pipe.

[0021] As an optimization, the coagulation agitator is connected to the coagulation motor in a transmission manner.

[0022] As an optimization, a liquid level sensor is provided in the coagulation tank.

[0023] In this way, the injection amount of cutting fluid wastewater and various reagents can be controlled according to the liquid level information fed back by the liquid level sensor, and at the same time, the reaction solution can be ensured to be emptied during output to avoid residual solution affecting the ratio and effect of the next round of coagulation.

[0024] As an optimization, the side of the filter slider is a T-shaped structure.

[0025] This makes it easier to embed it into the chute of the filter.

[0026] In summary, this solution has the following advantages:

[0027] 1. The solution proposed in this utility model realizes the integrated treatment of demulsification, coagulation and filtration steps in the cutting fluid treatment process, simplifies the process equipment for cutting fluid treatment, and also improves the stability of the coagulation step, the reaction ratio accuracy and the treatment efficiency, providing a new solution for cutting fluid wastewater treatment technology;

[0028] 2. The solution proposed by the utility model can complete the two processes of filtration and slag discharge at the same time. Its design structure is simple and the production cost is low. It can be used not only in the cutting fluid treatment process, but also in other wastewater treatment areas.

[0029] 3. The automatic coagulation and filtration device proposed in the present invention overcomes the defects of insufficient flocculation reaction and incomplete solid-liquid separation in the prior art spiral stacking machine, and provides a new coagulation and filtration solution for the field of water purification technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of an automatic coagulation and filtration device for cutting fluid treatment described in the utility model.

[0031] Figure 2 It is a structural schematic diagram of the coagulation box described in the utility model.

[0032] Figure 3 This is a structural diagram of the drive mechanism and filter box of the utility model

[0033] Figure 4 It is a cross-sectional view of the filtering mechanism of the present invention.

[0034] Figure 5 This is a cross-sectional view of the filter mechanism of the utility model when discharging slag. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional terms such as "upper, lower" and "top, bottom" are generally based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. Unless otherwise indicated, these directional terms do not indicate or imply that the devices or components referred to must have a specific direction or be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention; the directional terms "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0036] like Figure 1-5As shown, an automatic coagulation and filtration device for cutting fluid treatment includes a coagulation box 2 and a filter box 10 arranged accordingly, wherein the coagulation box and the filter box are connected via an output pipe 205; a coagulation agitator 5 and a plurality of injection pipes 203 are arranged in the coagulation box; a solid-liquid partition 1002 is arranged at the bottom of the filter box, which divides the filter box into a clear liquid area and a waste residue area, the clear liquid area is provided with a clear liquid port 1003 outwardly, and the waste residue area is provided with a slag discharge port 1004 outwardly; a rotating shaft is arranged above the solid-liquid partition 802, the rotating shaft is in transmission connection with the driving mechanism 8 arranged on the filter box, and at least two filtering mechanisms 11 are connected to the rotating shaft through a hinge seat 1102. The filtering mechanism is a filter screen 1101, and the filter screens together constitute a circular filtering surface. A rotating mechanism is arranged between the filter screens and the rotating shaft; one end of the output pipe is arranged at the bottom of the coagulation box, and the other end extends into the filter box and is connected to a downwardly arranged elbow, and the elbow is arranged opposite to the clear liquid area. A drain valve 7 is provided on the output pipe.

[0037] During use, the cutting fluid concentrate, coagulant and flocculation agent are injected into the coagulation box in turn through the injection pipe to carry out demulsification reaction and coagulation reaction. The reacted solution enters the filter box through the output pipe. After filtering through a filter screen located above the clear liquid area, the clear liquid is discharged through the clear liquid port. When the filter residue of the filter screen accumulates to a certain amount, the drive mechanism is started to drive the rotating shaft to rotate, and the filter screen is rotated to above the waste residue area, and the other filter screen is rotated to above the clear liquid area to continue filtering; the filter screen located above the waste residue area is driven by the rotating mechanism to tilt downward, and the waste residue inside it will be discharged from the residue discharge port; this solution can carry out integrated processing, simplify the process equipment of cutting fluid processing, and effectively achieve the effect of thorough solid-liquid separation.

[0038] Specifically, the number of filter screens on the rotating shaft can be increased, and the mesh size of the filter screens can be changed according to the process requirements of cutting fluid treatment.

[0039] Specifically, the coagulation box is arranged on a coagulation box support 1, and the filter box is provided with a filter box support 12, which provide installation bases for the coagulation box and the filter box respectively.

[0040] Specifically, the box body 201 of the coagulation box is a rectangular box body, and the box body 1001 of the filter box is a cylindrical tank body.

[0041] In this embodiment, the rotation mechanism includes a pull-down assembly and a reset assembly. The pull-down assembly includes a chute radially disposed at the bottom of the filter screen, a filter screen slider 1103 slidingly disposed within the chute, a spring slot 1105 disposed on the rotating shaft, a compression spring 1107 disposed within the spring slot, the ends of the compression spring respectively connected to an armature 1106 and an electromagnet 1108, a connecting rod 1104 rotatably disposed on the armature, the connecting rod being rotatably connected to the filter screen slider; the reset assembly includes a tension spring 1110 disposed within the rotating shaft, the ends of the tension spring respectively fixedly connected to the two filter screens. Thus, turning the electromagnet on and off enables the armature to move within the spring slot, thereby driving the connecting rod to pull the filter screen slider within the chute, thereby enabling the filter screen to rotate along the hinge seat, thereby forming a tilting action of the filter screen. After tilting, when the electromagnet is de-energized, the compression spring is released, cooperating with the reset tension of the tension spring to reset the filter screen.

[0042] Specifically, an electromagnet fixing groove 1109 is further provided at the bottom of the spring groove, and the electromagnet is installed in the electromagnet fixing groove, which can protect the electromagnet.

[0043] Specifically, the rotating shaft is hollow, and the lead of the electromagnet passes through the inside of the rotating shaft.

[0044] In this embodiment, the drive mechanism includes a ring gear 801 coaxially arranged with the rotating shaft. The ring gear and the rotating shaft are connected by a key. The rotating shaft is rotatably mounted on the filter box. A drive gear 803 is meshed within the ring gear, and the drive gear is in transmission connection with the steering motor mounted on the filter box. Thus, the steering motor 9 rotates, driving the drive gear, which in turn meshes with the ring gear to rotate and realize the rotation of the rotating shaft. This allows the output of the steering motor to be decelerated and transmitted to the rotating shaft, allowing precise control of the rotation angle and ensuring that the waste residue is accurately dumped into the waste residue area.

[0045] In this embodiment, a movable cover 202 is further provided on the top of the coagulation box, and the movable cover is hinged on the coagulation box, so that the internal condition of the box can be checked during debugging and maintenance.

[0046] In this embodiment, a drain pipe 204 is provided on the side of the bottom of the coagulation tank, and a drain valve 6 is provided on the drain pipe. In this way, when debugging or cleaning the device, the waste liquid in the coagulation tank can be discharged through the drain pipe.

[0047] In this embodiment, the coagulation agitator is connected to the coagulation motor 4 in a transmission manner.

[0048] In this embodiment, a liquid level sensor 3 is provided in the coagulation tank. In this way, the injection amount of cutting fluid wastewater and various reagents can be controlled according to the liquid level information fed back by the liquid level sensor. At the same time, the reaction solution is ensured to be emptied during output to prevent residual solution from affecting the ratio and effect of the next round of coagulation.

[0049] In this embodiment, the side of the filter slider is a T-shaped structure, which makes it easy to embed it into the chute of the filter.

[0050] The advantages of the utility model are:

[0051] 1. The solution proposed in this utility model realizes the integrated treatment of demulsification, coagulation and filtration steps in the cutting fluid treatment process, simplifies the process equipment for cutting fluid treatment, and also improves the stability of the coagulation step, the reaction ratio accuracy and the treatment efficiency, providing a new solution for cutting fluid wastewater treatment technology;

[0052] 2. The solution proposed by the utility model can complete the two processes of filtration and slag discharge at the same time. Its design structure is simple and the production cost is low. It can be used not only in the cutting fluid treatment process, but also in other wastewater treatment areas.

[0053] 3. The automatic coagulation and filtration device proposed in the present invention overcomes the defects of insufficient flocculation reaction and incomplete solid-liquid separation in the prior art spiral stacking machine, and provides a new coagulation and filtration solution for the field of water purification technology.

[0054] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An automatic coagulation and filtration device for cutting fluid treatment, characterized in that: It includes a coagulation box and a filter box arranged accordingly, wherein the coagulation box and the filter box are connected via an output pipe; The coagulation box is provided with a coagulation stirrer and a plurality of drug injection pipes; A solid-liquid partition is provided at the bottom of the filter box, dividing the filter box into a clear liquid area and a waste residue area, the clear liquid area is provided with a clear liquid outlet, and the waste residue area is provided with a slag discharge outlet; a rotating shaft is provided above the solid-liquid partition, the rotating shaft is in transmission connection with a driving mechanism provided on the filter box, at least two filtering mechanisms are connected to the rotating shaft via a hinge seat, the filtering mechanism is a filter screen, the filter screens together form a circular filtering surface, and a rotating mechanism is provided between the filter screens and the rotating shaft; One end of the output pipe is arranged through the bottom of the coagulation box, and the other end extends into the filter box and is connected with a downwardly arranged elbow, which is arranged facing the clear liquid area. A drain valve is arranged on the output pipe.

2. The automatic coagulation and filtration device for cutting fluid treatment according to claim 1, characterized in that: The rotating mechanism includes a pull-down assembly and a reset assembly, the pull-down assembly includes a slide groove radially arranged at the bottom of the filter, a filter slider is slidably arranged in the slide groove, a spring groove is provided on the rotating shaft, a compression spring is provided in the spring groove, two ends of the compression spring are respectively connected to the armature and the electromagnet, a connecting rod is rotatably provided on the armature, and the connecting rod is rotatably connected to the filter slider; The reset assembly includes a tension spring arranged in the rotating shaft, and two ends of the tension spring are respectively fixedly connected to the two filter screens.

3. The automatic coagulation and filtration device for cutting fluid treatment according to claim 2, characterized in that: The driving mechanism includes a gear ring coaxially arranged with the rotating shaft, the gear ring is connected to the rotating shaft through a key, the rotating shaft is rotatably arranged on the filter box, a driving gear is engaged in the gear ring, and the driving gear is transmission-connected to the transformation motor arranged on the filter box.

4. The automatic coagulation and filtration device for cutting fluid treatment according to claim 3, characterized in that: The top of the coagulation box is also provided with a movable cover plate, and the movable cover plate is hinged on the coagulation box.

5. The automatic coagulation and filtration device for cutting fluid treatment according to claim 4, characterized in that: An emptying pipe is provided on the side of the bottom of the coagulation box, and an emptying valve is provided on the emptying pipe.

6. The automatic coagulation and filtration device for cutting fluid treatment according to claim 5, characterized in that: The coagulation stirrer is in driving connection with the coagulation motor.

7. The automatic coagulation and filtration device for cutting fluid treatment according to claim 6, characterized in that: A liquid level sensor is arranged in the coagulation tank.

8. The automatic coagulation and filtration device for cutting fluid treatment according to claim 7, characterized in that: The side surface of the filter slider is a T-shaped structure.

Images