Waste cutting fluid recycling and purifying device

Abstract

The utility model relates to the technical field of waste cutting fluid recovery, in particular to a waste cutting fluid recovery and purification device which comprises a main support, a filter box and a settling box are arranged on the main support, a liquid injection pipe and a first connecting pipe are arranged on the filter box, a degradation box and an evaporation box are arranged on the main support, and a flocculant pipe and a second connecting pipe are arranged on the settling box. The main support is provided with an oxygen storage tank and an oxygen pump, the degradation box is provided with a motor and an inner cavity of the box, a motor shaft of the motor is provided with a main shaft, the main shaft is provided with a stirring blade, the stirring blade is provided with a liquid mixing opening, and the liquid mixing opening is provided with a liquid outlet. A sealing sleeve is arranged on the degradation box, and a scraping barrel plate is arranged on the stirring blade. The biodegradation efficiency of microorganisms on the waste cutting fluid is improved, and effective and comprehensive scraping of part of microorganisms attached to the inner wall face of the inner cavity of the box in the stirring process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste cutting fluid recovery, in particular to a waste cutting fluid recovery and purification device. Background Art

[0002] Cutting fluid is a liquid used in metal cutting and grinding processes. Its main functions are cooling, lubricating, cleaning and rust prevention. If the cutting fluid is discharged directly after use, it will cause waste. Therefore, a waste cutting fluid recovery and purification device is needed.

[0003] Generally, the particulate impurities in the waste cutting fluid will be filtered through a filter box for pre-treatment, and then input into a sedimentation box to combine with flocculants to aggregate the tiny particles in the waste cutting fluid into large particles, and separate the particles and liquid. The liquid is then input into a degradation box for biodegradation, which can convert the organic pollutants in the waste cutting fluid into harmless substances. Later, the harmless substances and the cutting fluid are separated through a semipermeable membrane. Finally, the waste cutting fluid is input into an evaporation box for concentrated evaporation, and the water in the cutting fluid is removed, so that the liquid volume is reduced to form a purified cutting fluid, which can achieve recycling and purification.

[0004] At present, in the existing waste cutting fluid recovery and purification devices, when the waste cutting fluid is biodegraded by microorganisms, the biodegradation efficiency is low, which will further reduce the overall recovery and purification efficiency of the waste cutting fluid. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a waste cutting fluid recovery and purification device.

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

[0007] A waste cutting fluid recovery and purification device is designed, comprising a main support, a filter box and a sedimentation box provided on the main support, an injection pipe and a first connecting pipe provided on the filter box, a degradation box and an evaporation box provided on the main support, a flocculant pipe and a second connecting pipe provided on the sedimentation box, a microorganism injection pipe and a third connecting pipe provided on the degradation box, a semipermeable membrane and a sewage pipe provided on the third connecting pipe, and a drainage pipe provided on the evaporation box;

[0008] The main support is provided with an oxygen storage tank and an oxygen pump, the degradation box is provided with a motor and a box cavity, the motor shaft of the motor is provided with a main shaft, the main shaft is provided with a stirring piece, and the stirring piece is provided with a liquid mixing port;

[0009] The degradation box is provided with a sealing sleeve, and the stirring piece is provided with a scraping barrel plate.

[0010] Furthermore, the oxygen storage tank and the oxygen extraction pump are arranged on the left end surface of the main bracket, and an oxygen supply pipe is provided between the oxygen storage tank and the oxygen extraction pump.

[0011] Furthermore, the oxygen pump is connected to a main oxygen pipe, the main oxygen pipe is connected to an oxygen injection pipe, the top cross-section of the oxygen injection pipe is a U-shaped structure, and the oxygen injection pipe is connected to the degradation box.

[0012] Furthermore, the number of the stirring blades is six and they are arranged circumferentially on the main shaft. The liquid mixing ports are arranged in three groups horizontally, with three in each group and passing through the stirring blades. The liquid mixing ports are long strip openings with an arc-shaped cross-section.

[0013] Furthermore, the side cross-section of the inner cavity of the box is a circular cross-section, the scraper barrel is arranged on the side end surface of the stirring blade, and the scraper barrel is a cylindrical structure as a whole and is in compression contact with the inner wall of the inner cavity of the box.

[0014] Furthermore, there are two oxygen injection pipes that are symmetrical in front and back, and the pipe body of the oxygen injection pipe inserted into the degradation box is a diffusion trumpet structure.

[0015] Furthermore, the sealing sleeve is embedded in the right side wall of the degradation box, and the outer wall surface of the main shaft is sealingly connected to the sealing sleeve.

[0016] The waste cutting fluid recovery and purification device proposed in this utility model has the following beneficial effects:

[0017] 1. The utility model provides a stirring structure on the degradation box, opens a liquid mixing port on the stirring sheet, provides an oxygen extraction structure on the main bracket, and provides a symmetrical oxygen spray pipe on the degradation box, so as to achieve comprehensive mixed flow stirring of the microorganisms and the waste cutting fluid in the degradation box while performing symmetrical oxygen spraying, thereby improving the overall biodegradation efficiency of the waste cutting fluid by the microorganisms, and further improving the overall recovery and purification efficiency of the waste cutting fluid.

[0018] 2. The utility model provides a scraping barrel plate on the outer wall of the stirring blade and a cylindrical box cavity structure in the degradation box, so that part of the microorganisms attached to the inner wall of the box cavity can be effectively and comprehensively scraped off during the stirring process, avoiding the omission of microorganisms and improving the comprehensive utilization rate of microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic top view of the overall structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 Partial cross-section of section YY;

[0022] Figure 4 For the utility model Figure 3 A partial enlarged view of the degradation box structure at Z in the middle;

[0023] Figure 5 For the utility model Figure 4 Side cross-sectional view of the degradation box structure.

[0024] In the figure: 1 main support; 11 filter box; 12 liquid injection pipe; 13 first connecting pipe; 2 sedimentation box; 21 flocculant pipe; 22 second connecting pipe; 3 degradation box; 30 box cavity; 31 microorganism injection pipe; 32 third connecting pipe; 321 semipermeable membrane; 33 sewage pipe; 34 sealing sleeve; 4 evaporation box; 41 liquid discharge pipe; 5 oxygen storage tank; 51 oxygen supply pipe; 52 oxygen extraction pump; 53 main oxygen pipe; 54 oxygen injection pipe; 6 motor; 61 main shaft; 7 stirring blade; 71 liquid mixing port; 72 scraper plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-5 A waste cutting fluid recovery and purification device includes a main support 1, a filter box 11 and a sedimentation box 2 are provided on the main support 1, an injection pipe 12 and a first connecting pipe 13 are provided on the filter box 11, a degradation box 3 and an evaporation box 4 are provided on the main support 1, a flocculant pipe 21 and a second connecting pipe 22 are provided on the sedimentation box 2, a microorganism injection pipe 31 and a third connecting pipe 32 are provided on the degradation box 3, a semipermeable membrane 321 and a sewage pipe 33 are provided on the third connecting pipe 32, and a drainage pipe 41 is provided on the evaporation box 4;

[0027] The main support 1 is provided with an oxygen storage tank 5 and an oxygen pump 52, the degradation box 3 is provided with a motor 6 and a box cavity 30, the motor shaft of the motor 6 is provided with a main shaft 61, the main shaft 61 is provided with a stirring blade 7, and the stirring blade 7 is provided with a liquid mixing port 71;

[0028] The degradation box 3 is provided with a sealing sleeve 34 , and the stirring blade 7 is provided with a scraping barrel plate 72 .

[0029] The oxygen storage tank 5 and the oxygen extraction pump 52 are arranged on the left end face of the main bracket 1. An oxygen supply pipe 51 is provided between the oxygen storage tank 5 and the oxygen extraction pump 52. Oxygen is preset in the oxygen storage tank 5. Since microorganisms metabolize through aerobic respiration, the oxygen injected into the degradation box 3 can further improve the degradation efficiency of microorganisms.

[0030] The oxygen extraction pump 52 is connected to a main oxygen pipe 53, and the main oxygen pipe 53 is connected to an oxygen injection pipe 54. The top cross-section of the oxygen injection pipe 54 is a U-shaped structure. The oxygen injection pipe 54 is connected to the degradation box 3. A flow meter is preset on the oxygen extraction pump 52, and the amount of oxygen injected into the degradation box 3 can be known in real time.

[0031] There are six stirring blades 7 and they are arranged in a circle on the main shaft 61. The mixing ports 71 are arranged in three groups horizontally, with three in each group and passing through the stirring blade 7. The mixing ports 71 are long strip openings and have an arc-shaped cross-section. When the stirring blade 7 rotates at a constant speed, microorganisms and waste cutting fluid will pass through each mixing port 71, thereby achieving a mixing and stirring effect.

[0032] The side cross-section of the box cavity 30 is a circular cross-section. The scraper barrel plate 72 is arranged on the side end face of the stirring blade 7. The scraper barrel plate 72 is a cylindrical structure as a whole and is in squeeze contact with the inner wall of the box cavity 30. The scraper barrel plate 72 is made of NBR nitrile rubber as a whole, which is wear-resistant, highly elastic, durable, and ensures effective and comprehensive squeeze contact with the inner wall of the box cavity 30, thereby ensuring the scraping effect of microorganisms.

[0033] There are two oxygen injection pipes 54 symmetrically arranged front to back. The pipe body of the oxygen injection pipe 54 inserted into the degradation box 3 is a diffusion trumpet structure, which further increases the effective area for oxygen to be injected into the degradation box 3 .

[0034] The sealing sleeve 34 is embedded in the right side wall of the degradation box 3, and the outer wall surface of the main shaft 61 is sealed with the sealing sleeve 34. The sealing sleeve 34 is made of polyurethane and has extrusion sealing properties, ensuring the rotation of the main shaft 61 and the motor shaft of the motor 6, while ensuring the sealing of this part.

[0035] Working method: a certain amount of waste cutting fluid is injected through the injection pipe 12, and then the impurity particles are pre-treated and filtered through the filter box 11. Then the waste cutting fluid will enter the sedimentation tank 2, and then a certain amount of flocculant will be injected through the flocculant pipe 21 to achieve overall flocculation and precipitation of the waste cutting fluid, and achieve sedimentation separation. Then, the waste cutting fluid without particulate impurities will enter the degradation tank 3, and a certain amount of microorganisms will be injected through the microbial injection pipe 31. Then, the organic pollutants in the waste cutting fluid will be degraded by the metabolism of the microorganisms to form harmless substances. Later, the harmless substances will be separated through the semipermeable membrane 321 in the third connecting pipe 32 and discharged through the drain pipe 33. At this time, the clean cutting fluid will enter the evaporation box 4, evaporate and concentrate, and remove excess water therein to reduce its volume. Later, it will be discharged through the drain pipe 41 for subsequent recycling.

[0036] When the organic pollutants in the waste cutting fluid are degraded by the metabolism of microorganisms, the oxygen pump 52 and the motor 6 can be started. The oxygen pump 52 symmetrically injects the oxygen in the oxygen storage tank 5 into the degradation box 3 through the symmetrical oxygen injection pipe 54 to ensure the oxygen required by the microorganisms. At the same time, the motor 6 drives the stirring blade 7 to rotate at a uniform speed through the main shaft 61, which not only improves the mixing degree of microorganisms and oxygen, but also realizes effective and comprehensive mixing and stirring of microorganisms and waste cutting fluid through the mixing port 71, and realizes comprehensive mixing and stirring of the microorganisms and waste cutting fluid in the degradation box 3 while symmetrically spraying oxygen, thereby improving the overall biodegradation efficiency of the waste cutting fluid by microorganisms, and thus improving the overall recovery and purification efficiency of the waste cutting fluid.

[0037] In addition, by arranging a scraper barrel 72 on the outer wall of the stirring blade 7 and arranging a cylindrical box cavity 30 structure in the degradation box 3, it is possible to effectively and comprehensively scrape off some microorganisms attached to the inner wall of the box cavity 30 during the stirring process, thereby avoiding the omission of microorganisms and improving the comprehensive utilization rate of microorganisms.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste cutting fluid recovery and purification device, comprising a main support (1), characterized in that: The main support (1) is provided with a filter box (11) and a sedimentation box (2), the filter box (11) is provided with a liquid injection pipe (12) and a first connecting pipe (13), the main support (1) is provided with a degradation box (3) and an evaporation box (4), the sedimentation box (2) is provided with a flocculant pipe (21) and a second connecting pipe (22), the degradation box (3) is provided with a microorganism injection pipe (31) and a third connecting pipe (32), the third connecting pipe (32) is provided with a semipermeable membrane (321) and a sewage discharge pipe (33), and the evaporation box (4) is provided with a liquid discharge pipe (41); The main support (1) is provided with an oxygen storage tank (5) and an oxygen pump (52); the degradation box (3) is provided with a motor (6) and a box cavity (30); a main shaft (61) is provided on the motor shaft of the motor (6); a stirring blade (7) is provided on the main shaft (61); and a liquid mixing port (71) is provided on the stirring blade (7); The degradation box (3) is provided with a sealing sleeve (34), and the stirring blade (7) is provided with a scraping barrel plate (72).

2. The waste cutting fluid recovery and purification device according to claim 1, characterized in that: The oxygen storage tank (5) and the oxygen extraction pump (52) are arranged on the left end surface of the main support (1), and an oxygen supply pipe (51) is provided between the oxygen storage tank (5) and the oxygen extraction pump (52).

3. The waste cutting fluid recovery and purification device according to claim 1, characterized in that: The oxygen pump (52) is connected to a main oxygen pipe (53), and the main oxygen pipe (53) is connected to an oxygen injection pipe (54). The top view cross section of the oxygen injection pipe (54) is a U-shaped structure, and the oxygen injection pipe (54) is connected to the degradation box (3).

4. The waste cutting fluid recovery and purification device according to claim 1, characterized in that: The stirring blades (7) are six in number and are arranged circumferentially on the main shaft (61). The liquid mixing ports (71) are arranged in three groups in a transverse direction, with each group having three and passing through the stirring blades (7). The liquid mixing ports (71) are long strip-shaped openings with an arc-shaped cross section.

5. The waste cutting fluid recovery and purification device according to claim 1, characterized in that: The side cross-section of the box cavity (30) is a circular cross-section, and the scraper barrel plate (72) is arranged on the side end surface of the stirring blade (7). The scraper barrel plate (72) is a cylindrical structure as a whole and is in compression contact with the inner wall of the box cavity (30).

6. The waste cutting fluid recovery and purification device according to claim 3, characterized in that: The oxygen injection pipes (54) are two symmetrical ones in front and back, and the pipe body of the oxygen injection pipe (54) inserted into the degradation box (3) is a diffusion-type trumpet structure.

7. The waste cutting fluid recovery and purification device according to claim 1, characterized in that: The sealing sleeve (34) is embedded in the right side wall of the degradation box (3), and the outer wall surface of the main shaft (61) is sealingly sleeved with the sealing sleeve (34).

Images