阅读说明：本技术 用于无心磨床的磨削液自动循环和物化沉淀压滤净化装置 (Grinding fluid automatic circulation and physical and chemical precipitation filter pressing purification device for centerless grinding machine ) 是由 梁强 李福强 闵新亚 李亚生 韦金钰 马宝 于铁柱 于 2020-07-16 设计创作，主要内容包括：本发明公布一种用于无心磨床的磨削液自动循环和物化沉淀压滤净化装置。包括含渣废水收集箱、清洁循环液收集箱、搅拌式四分区一体化沉淀器、潜水搅拌机、砂浆泵和离心式压滤机；含渣废水收集箱内的废水液下泵将含渣循环液泵入所述搅拌式四分区一体化沉淀器；搅拌式四分区一体化沉淀器上部漂流层的清洁循环液通过溢流管道溢流至所述清洁循环液收集箱；砂浆泵将搅拌式四分区一体化沉淀器中部混合层的含渣循环液泵入离心式压滤机。本发明满足无心磨设备磨削过程中磨屑出渣量大、要求磨削液清洁度高的工艺需求,延长磨削液的使用周期,减少更换频次,降低添加量,提高工件磨削质量,明显提升设备的综合效率。(The invention discloses a grinding fluid automatic circulation and physicochemical precipitation filter-pressing purification device for a centerless grinding machine. Comprises a slag-containing wastewater collection box, a clean circulating liquid collection box, a stirring type four-partition integrated precipitator, a submersible stirrer, a mortar pump and a centrifugal filter press; a wastewater submerged pump in the slag-containing wastewater collection box pumps slag-containing circulating liquid into the stirring type four-partition integrated precipitator; clean circulating liquid of an upper drift layer of the stirring type four-partition integrated precipitator overflows to the clean circulating liquid collecting box through an overflow pipeline; and pumping the slag-containing circulating liquid of the mixing layer in the middle of the stirring type four-partition integrated precipitator into a centrifugal filter press by a mortar pump. The invention meets the process requirements of large abrasive dust slag output and high grinding fluid cleanliness requirement in the grinding process of centerless grinding equipment, prolongs the service cycle of the grinding fluid, reduces the replacement frequency, reduces the addition amount, improves the grinding quality of workpieces, and obviously improves the comprehensive efficiency of the equipment.)

1. A grinding fluid automatic circulation and physicochemical precipitation filter-pressing purification device for a centerless grinding machine,

the method is characterized in that:

comprises a slag-containing waste water collecting box (13), a clean circulating liquid collecting box (14), a stirring type four-partition integrated precipitator (15), a submersible stirrer (16), a mortar pump (17) and a centrifugal filter press (18);

the slag-containing wastewater collection box (13) receives slag-containing circulating liquid, and a wastewater submerged pump in the slag-containing wastewater collection box (13) pumps the slag-containing circulating liquid into the stirring type four-partition integrated precipitator (15);

clean circulating liquid of a drift layer at the upper part of the stirring type four-partition integrated precipitator (15) overflows to the clean circulating liquid collecting box (14) through an overflow pipeline (7); the middle mixing layer of the stirring type four-zone integrated precipitator (15) is connected with the mortar pump (17) through a water outlet pipeline (4), and the mortar pump (17) pumps the slag-containing circulating liquid of the middle mixing layer of the stirring type four-zone integrated precipitator (15) into the centrifugal filter press (18); the bottom of the stirring type four-zone integrated precipitator (15) is provided with the submersible stirrer (16);

the centrifugal filter press (18) sends the separated abrasive dust residues to a waste residue collecting tank for collection and outward transportation, and the centrifugal filter press (18) sends the separated cleaning circulation liquid to the cleaning circulation liquid collecting tank (14);

and a cleaning submerged pump in the cleaning circulating liquid collecting box (14) pumps the cleaning circulating liquid into the production line.

2. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 1, wherein: and a waste water submerged pump in the slag-containing waste water collecting box (13) is connected with a floating ball liquid level control switch.

3. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 1, wherein: and a cleaning submerged pump in the cleaning circulating liquid collecting box (14) is connected with a floating ball liquid level control switch.

4. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 1, wherein: an overflow water pipe is arranged at the upper part of the cleaning circulating liquid collecting box (14), and the overflow water pipe is communicated to the slag-containing wastewater collecting box (13).

5. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 1, wherein: a first stop valve is arranged on a pipeline between the mortar pump (17) and the centrifugal filter press (18); a second stop valve is arranged on a pipeline between the mortar pump (17) and the stirring type four-partition integrated precipitator (15);

the liquid inlet of the centrifugal filter press (18) is communicated to the mixed layer in the middle of the stirring type four-division integrated precipitator (15) through a pipeline, and a third stop valve is arranged on the pipeline between the liquid inlet of the centrifugal filter press (18) and the stirring type four-division integrated precipitator (15).

6. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 1, wherein: the stirring type four-partition integrated precipitator (15) comprises a bottom plate (11), and an outer cylinder (1) is fixed on the bottom plate (11);

an inner cylinder (6) is arranged at the inner axis position of the outer cylinder (1), and the upper end of the inner cylinder (6) receives slag-containing circulating liquid pumped by a waste water submerged pump in the slag-containing waste water collecting tank (13); the lower end of the inner cylinder (6) is provided with a water turning device (3);

a conical sedimentation tank (2) is arranged below the water turning device (3); the bottom of the sedimentation tank (2) is connected with a cleaning pipeline (12);

the middle part of the outer barrel (1) is provided with the water outlet pipeline (4);

an overflow groove (5) is arranged on the upper part of the outer barrel (1), and the wall of the outer barrel (1) opposite to the overflow groove (5) is connected with the overflow pipeline (7).

7. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 6, wherein: the water turning device (3) comprises a conical body fixed at the lower end of the inner cylinder (6), and through holes are uniformly distributed on the periphery of the lower end of the inner cylinder (6).

8. The grinding fluid automatic circulation and physical and chemical precipitation filter-pressing purification device for the centerless grinder as claimed in claim 6, wherein: a mounting pipeline (9) is fixed on the side surface of the bottom of the outer cylinder (1); the outer end of the submersible mixer (16) is fixedly arranged on the mounting pipeline (9), and a mixing rod (10) of the submersible mixer (16) extends into the sedimentation tank (2).

Technical Field

The invention relates to the technical field of super-long piston rod grinding, in particular to a grinding fluid automatic circulation and physical and chemical precipitation filter pressing purification device for a centerless grinding machine.

Background

The centerless grinding machine is typical equipment suitable for grinding processing of an ultra-long piston rod, is high in processing efficiency and suitable for processing of batch products, and has the technical characteristics of large heat productivity and high slag content due to large grinding allowance in the grinding process, so that the defects of workpiece deformation, grinding surface burn, scratch and the like in the grinding process are easily caused, and extremely high requirements are provided for the circulation and purification capacity of a grinding fluid system.

The grinding fluid circulating purification system applied conventionally is a combination mode of magnetic separation filtration and filter paper filtration, and grinding fluid enters a filter paper filter for secondary filtration after being subjected to primary magnetic separation filtration and then enters grinding circulation; this technique has the following problems:

1. the waste residue is not completely separated and filtered, the cleanliness of grinding fluid cannot meet the requirements of a grinding process, workpieces are scratched in the grinding process, the consumption of filter paper is high, the grinding fluid is brought out and runs off more, the water content of the waste residue is high, and environmental protection hazards exist;

2. the manual operation is needed for cleaning the abrasive dust and replacing the filter paper, and the comprehensive efficiency of the equipment operation is low.

Disclosure of Invention

In order to solve the technical problems, the invention provides a grinding fluid automatic circulation and physical and chemical precipitation filter pressing purification device for a centerless grinding machine, which can realize the automatic circulation of the grinding fluid without interruption, prolong the maintenance period and improve the comprehensive efficiency of equipment.

The invention is realized by the following technical scheme: a grinding fluid automatic circulation and materialization precipitation filter-pressing purification device for a centerless grinding machine comprises a slag-containing waste water collection box, a cleaning circulation fluid collection box, a stirring type four-partition integrated precipitator, a submersible stirrer, a mortar pump and a centrifugal filter press; the slag-containing wastewater collection box receives slag-containing circulating liquid, and a wastewater submerged pump in the slag-containing wastewater collection box pumps the slag-containing circulating liquid into the stirring type four-partition integrated precipitator; the clean circulating liquid of the upper drift layer of the stirring type four-partition integrated precipitator overflows to the clean circulating liquid collecting box through an overflow pipeline; the middle mixing layer of the stirring type four-partition integrated precipitator is connected with the mortar pump through a water outlet pipeline, and the mortar pump pumps the slag-containing circulating liquid of the middle mixing layer of the stirring type four-partition integrated precipitator into the centrifugal filter press; the submersible stirrer is arranged at the bottom of the stirring type four-partition integrated precipitator; the centrifugal filter press sends the separated abrasive dust residues into a waste residue collecting tank to be collected and transported outwards, and the centrifugal filter press sends the separated cleaning circulation liquid into the cleaning circulation liquid collecting tank; and a cleaning submerged pump in the cleaning circulating liquid collecting box pumps the cleaning circulating liquid into the production line.

It further comprises the following steps: and a wastewater submerged pump in the slag-containing wastewater collection box is connected with a floating ball liquid level control switch.

And a cleaning submerged pump in the cleaning circulating liquid collecting box is connected with a floating ball liquid level control switch.

And an overflow water pipe is arranged at the upper part of the cleaning circulating liquid collecting box and communicated to the slag-containing wastewater collecting box.

A first stop valve is arranged on a pipeline between the mortar pump and the centrifugal filter press; a second stop valve is arranged on a pipeline between the mortar pump and the stirring type four-partition integrated precipitator; the liquid inlet of the centrifugal filter press is communicated to the mixed layer in the middle of the stirring type four-division integrated precipitator through a pipeline, and a third stop valve is arranged on the pipeline between the liquid inlet of the centrifugal filter press and the stirring type four-division integrated precipitator.

The stirring type four-partition integrated precipitator comprises a bottom plate, wherein an outer cylinder is fixed on the bottom plate; an inner cylinder is arranged at the inner axis position of the outer cylinder, and the upper end of the inner cylinder receives slag-containing circulating liquid pumped by a waste water submerged pump in the slag-containing waste water collecting box; the lower end of the inner cylinder is provided with a water turning device; a conical sedimentation tank is arranged below the water turning device; the bottom of the sedimentation tank is connected with a cleaning pipeline; the water outlet pipeline is arranged in the middle of the outer barrel; and the upper part of the outer barrel is provided with an overflow tank, and the outer barrel wall opposite to the overflow tank is connected with the overflow pipeline.

The water turning device comprises a conical body fixed at the lower end of the inner cylinder, and through holes are uniformly distributed on the periphery of the lower end of the inner cylinder.

A mounting pipeline is fixed on the side surface of the bottom of the outer cylinder; the outer end of the submersible stirring machine is fixedly arranged on the installation pipeline, and a stirring rod of the submersible stirring machine extends into the sedimentation tank.

The invention meets the process requirements of large abrasive dust output and high grinding fluid cleanliness requirement in the grinding process of centerless grinding equipment, automatically circulates and separates and purifies abrasive dust and waste slag under the continuous grinding working condition, and keeps the clean state and good performance of the grinding fluid; the service cycle of the grinding fluid is prolonged, the replacement frequency is reduced, the addition amount is reduced, the technological characteristics of centerless grinding processing are met, the grinding quality of workpieces is improved, and the comprehensive efficiency of equipment is obviously improved.

Compared with the prior art, the invention has the beneficial effects that:

1. the grinding fluid is automatically circulated without interruption, and the stable working state of the centerless grinder is kept;

2. the heavy slag and the light slag of the grinding chips are combined, physically precipitated and filter-pressed, so that the good and stable cleanliness and grinding performance of the grinding fluid are maintained;

3. the automatic circulation and the physicochemical precipitation and filter pressing operation process have no filter material, the water content of the discharged slag is low, the automatic slag discharge can be realized, the consumption is reduced, and the energy conservation and the environmental protection are realized;

4. the device has simple structure, convenient maintenance and reliable operation, and the comprehensive efficiency of the equipment is obviously improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of an agitated four-zone integrated precipitator;

FIG. 3 is a state diagram of the stirring type four-division integrated precipitator in operation;

in the figure: 1. an outer cylinder; 2. a sedimentation tank; 3. a water turning device; 4. a water outlet pipeline; 5. an overflow tank; 6. an inner barrel; 7. an overflow conduit; 9. installing a pipeline; 10. a stirring rod; 11. a base plate; 12. cleaning the pipeline; 13. a slag-containing wastewater collection box; 14. a cleaning circulating liquid collecting box; 15. a stirring type four-partition integrated precipitator; 16. a submersible mixer; 17. a mortar pump; 18. centrifugal filter press.

Detailed Description

The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.

Referring to fig. 1, the grinding fluid automatic circulation and materialized precipitation filter-pressing purification device for the centerless grinding machine comprises a slag-containing waste water collection box 13, a cleaning circulation fluid collection box 14, a stirring type four-divided-area integrated precipitator 15, a submersible stirrer 16, a mortar pump 17 and a centrifugal filter press 18.

The slag-containing waste water collection box 13 receives slag-containing circulating liquid, a waste water submerged pump is arranged in the slag-containing waste water collection box 13, and the waste water submerged pump pumps the slag-containing circulating liquid into the stirring type four-partition integrated precipitator 15. The waste water submerged pump is connected with a floating ball liquid level control switch.

The clean circulating liquid of the upper drift layer of the stirring type four-partition integrated precipitator 15 overflows to a clean circulating liquid collecting box 14 through an overflow pipeline 7. An overflow water pipe is arranged at the upper part of the cleaning circulating liquid collecting box 14 and communicated to the slag-containing waste water collecting box 13. A cleaning submerged pump is arranged in the cleaning circulating liquid collecting box 14 and pumps the cleaning circulating liquid into the production line, and the cleaning submerged pump is connected with a floating ball liquid level control switch.

The middle mixed layer of the stirring type four-division integrated precipitator 15 is connected with a mortar pump 17 through a water outlet pipeline 4, and the mortar pump 17 pumps the slag-containing circulating liquid of the middle mixed layer of the stirring type four-division integrated precipitator 15 into a centrifugal filter press 18. The bottom of the stirring type four-section integrated precipitator 15 is provided with a submersible stirrer 16.

A first stop valve is arranged on a pipeline between the mortar pump 17 and the centrifugal filter press 18; and a second stop valve is arranged on a pipeline between the mortar pump 17 and the stirring type four-partition integrated precipitator 15. A liquid inlet of the centrifugal filter press 18 is communicated to the mixed layer in the middle of the stirring type four-division integrated precipitator 15 through a pipeline, and a third stop valve is arranged on the pipeline between the liquid inlet of the centrifugal filter press 18 and the stirring type four-division integrated precipitator 15.

The centrifugal filter press 18 sends the separated abrasive dust residues to a waste residue collecting tank for collection and outward transportation, and the centrifugal filter press 18 sends the separated cleaning circulation liquid to the cleaning circulation liquid collecting tank 14.

Referring to fig. 2 and 3, the stirring type four-division integrated precipitator 15 comprises a bottom plate 11, and an outer cylinder 1 is fixed on the bottom plate 11. An inner cylinder 6 is arranged at the inner axis position of the outer cylinder 1, and the upper end of the inner cylinder 6 receives slag-containing circulating liquid pumped by a waste water submerged pump in a slag-containing waste water collecting box 13. The lower end of the inner cylinder 6 is provided with a water turning device 3; the water turning device 3 comprises a conical body fixed at the lower end of the inner cylinder 6, and through holes are uniformly distributed on the periphery of the lower end of the inner cylinder 6. A conical sedimentation tank 2 is arranged below the water turning device 3; the bottom of the sedimentation tank 2 is connected with a cleaning pipeline 12. The middle part of the outer cylinder 1 is provided with a water outlet pipeline 4. An overflow tank 5 is arranged on the upper part of the outer cylinder 1, and an overflow pipeline 7 is connected on the wall of the outer cylinder 1 opposite to the overflow tank 5. A mounting pipeline 9 is fixed on the side surface of the bottom of the outer cylinder 1; the outer end of the submersible mixer 16 is fixedly arranged on the mounting pipeline 9, and a mixing rod 10 of the submersible mixer 16 extends into the sedimentation tank 2.

The working principle is as follows:

the slag-containing circulating liquid discharged by the centerless grinding equipment in a grinding cycle enters a slag-containing waste water collecting box 13, a submerged pump is arranged on the slag-containing waste water collecting box 13, the slag-containing waste liquid is lifted into a stirring type four-partition integrated precipitator 15 through floating ball liquid level control, a precipitation separation method is adopted for scrap iron and sand contained in the cutting fluid,

as shown in connection with figure 3 of the drawings,

during operation, slag-containing cutting fluid is pumped into an inner barrel 6 of the stirring type four-division integrated precipitator 15 from a slag-containing waste water collecting box, a high-speed eddy reaction area, a strong adsorption area and a sludge concentration area are formed through the water turning device 3, heavy slag and the cutting fluid are quickly separated, the heavy slag is deposited into a precipitation tank to be accumulated into a precipitation layer, the cutting fluid containing the light slag drifts upwards to enter a gradual-change slow reaction area and a suspension clarification precipitation area, and the cutting fluid is separated into a mixed layer and a drift layer;

the sand and the scrap iron in the circulating liquid are physically separated efficiently and rapidly through a high-speed vortex reaction zone, a gradual-change slow reaction zone, a suspension clarification sedimentation zone and a strong adsorption and sludge concentration zone;

the drifting layer directly separates drifting and enters the circulating liquid collecting box 14 for grinding;

the sediment layer is arranged at the bottom of the container, so as to prevent sediment at the bottom from being deposited and then being compacted and agglomerated, the bottom of the precipitator is provided with a submersible mixer 16, sediment at the bottom is mixed into the mixed layer after being mixed by the submersible mixer, and the mixed layer is arranged in the middle of the container;

the mortar pump 17 is extracted from the mixed layer slag-containing grinding fluid and enters the centrifugal filter press 18 for separation and purification, the centrifugal filter press is a filtering device capable of continuously running, the separated clean grinding fluid enters the circulating fluid collecting tank, and the abrasive dust residues enter the waste residue collecting tank for collection and outward transportation, so that the manual operation is reduced, and the environmental protection risk is reduced.

In the embodiment, the centerless grinding is carried out under the working condition;

a grinding fluid circulating system is operated, a water level sensor is arranged for controlling the slag-containing waste water collecting tank, the circulating fluid collecting tank, the stirring type four-partition integrated precipitator and the like, and a pump valve is combined to monitor the backwater water level in real time, prevent the water level of each water tank from overflowing in an overrun way, and ensure the use amount of the cutting fluid under the grinding working condition of equipment and the efficient solid-liquid purification and separation of the centrifugal filter press on the grinding fluid;

under the working condition of centerless grinding and non-grinding;

the grinding fluid circulating system is operated, a water level sensor is arranged on a slag-containing waste water collecting tank, a circulating fluid collecting tank, a stirring type four-partition integrated precipitator and the like, and is controlled by a pump valve, the backwater water level is monitored in real time, the water level of each water tank is prevented from overflowing in an overrun mode, the grinding fluid circulating system enters an automatic cleaning circulating state, the slag-containing waste water collecting tank, the stirring type four-partition integrated precipitator, a centrifugal filter press and the like are washed and cleaned, and the self-cleaning and good running state of the grinding fluid circulating system is kept.

This embodiment has realized that grinding fluid does not have consumptive material filtration purification, and the operation maintenance cost is low, and the grinding fluid cleanliness improves, can solve burn, the grinding problem of hindering in the product grinding process, reduces the waste residue moisture content, reduces the environmental protection risk. The method ensures that the centerless grinding equipment keeps clean state and good performance of the grinding fluid under the continuous grinding working condition, the grinding quality index of the workpiece meets the process requirement, the process characteristic of centerless grinding processing is met, and the comprehensive efficiency of the equipment is improved.