Circulating water treatment system for steel ball initial grinding process

Abstract

The utility model provides a circulating water treatment system for a steel ball initial grinding process, and belongs to the technical field of a whole set of equipment designed for feeding or clarifying cooling liquid on a grinding machine. The steel ball primary grinding procedure circulating water treatment system comprises a circulating sedimentation tank, a grinding machine, a liquid discharge pipe and a liquid suction pipe, circulating water used by the grinding machine is discharged into the circulating sedimentation tank through the liquid discharge pipe, a liquid suction pump is arranged on the liquid suction pipe, the steel ball primary grinding procedure circulating water treatment system further comprises filtering equipment for circulating work, and a material inlet of the filtering equipment is connected to the circulating sedimentation tank through a liquid inlet pipe. A liquid outlet of the filtering equipment is connected to the circulating sedimentation tank through a liquid outlet pipe, so that liquid filtered by the filtering equipment is discharged into the circulating sedimentation tank. Through circulating work of the filtering equipment, impurities such as resin powder and superfine iron powder can be fully filtered, the definition of water in the circulating sedimentation tank is maintained, and the antirust effect of circulating water is guaranteed.

Description

Technical Field

[0001] The utility model relates to a circulating water treatment system for a steel ball primary grinding process, belonging to the technical field of a complete set of equipment designed for feeding or clarifying cooling liquid on a grinding machine. Background Art

[0002] The production process of steel balls includes hard grinding and primary grinding. The hard grinding process involves grinding the steel ball surface with a ceramic grinding wheel after quenching. The primary grinding process involves further grinding the steel ball surface with a resin grinding wheel after the hard grinding process. Both processes require large amounts of circulating water. The impurities in the circulating water from the hard grinding process are primarily iron powder and grinding wheel dust. These impurities are relatively heavy and easily settle after standing in the water tank. The impurities in the circulating water from the primary grinding process are primarily iron filings and resin powder. Most of these settle after standing, but a small amount of resin powder and ultrafine iron powder does not settle even after long-term standing. The circulating water remains turbid for a long time and becomes increasingly dirty with repeated use, affecting its rust-proofing effect. Ultimately, the water must be discarded, resulting in significant waste and environmental pollution.

[0003] In this regard, the Chinese utility model patent with authorization announcement number CN204382094U discloses a grinding fluid recycling and filter residue automatic separation and collection device. The separation and collection device includes a sedimentation tank, a separator, a waste residue bucket, an elevator, a waste residue recovery pipe and a waste residue tank. The grinding fluid after use in the grinder is first transported to the separator through a discharge pipe. The separator is located above the sedimentation tank. The grinding fluid separated by the separator enters the sedimentation tank. The separated waste residue reaches the waste residue bucket through a conveyor belt. The elevator then lifts the waste residue bucket to the waste residue recovery pipe. The waste residue is poured into the recovery pipe and transported to the waste residue tank through the recovery pipe. The grinding fluid entering the sedimentation tank is pumped away by a water pump after three stages of sedimentation and then transported to each grinding machine through a pipeline for use.

[0004] The above-mentioned separation and collection device is only suitable for situations where the grinding fluid carries a very large amount of slag and the particle size is also relatively large. However, for the initial grinding process of steel balls, the amount of impurities in the circulating water is small and the specific gravity is very low. If this method is used, the separator will be in a state of constant operation, and even after long-term operation, it will not separate much waste slag, resulting in energy waste. In addition, impurities such as resin powder and ultrafine iron powder will directly pass through the separator into the sedimentation tank. These impurities will not settle even if they remain in the sedimentation tank for a long time. As a result, the turbid circulating water is directly pumped to the various grinding machines for use, making the circulating water increasingly dirty and affecting its rust prevention effect. Utility Model Content

[0005] The purpose of the utility model is to provide a circulating water treatment system for the primary grinding process of steel balls, so as to solve the problem that when the separation and collection device in the prior art is applied to the primary grinding process of steel balls, it not only causes waste of energy, but also impurities such as resin powder and ultrafine iron powder will directly pass through the separator into the sedimentation tank. These impurities will not settle even if they are left standing in the sedimentation tank for a long time, resulting in turbid circulating water being directly pumped to various grinders for use, making the circulating water increasingly dirty and affecting the anti-rust effect of the circulating water.

[0006] To achieve the above objectives, the circulating water treatment system for the steel ball primary grinding process in the present invention adopts the following technical solutions:

[0007] The circulating water treatment system for the initial grinding process of steel balls includes a circulating sedimentation tank, a grinder, a drain pipe and a suction pipe. The drain pipe is used to discharge the circulating water after use by the grinder into the circulating sedimentation tank. The suction pipe is provided with a suction pump for extracting the circulating water in the circulating sedimentation tank and supplying it to the grinder. The circulating water treatment system for the initial grinding process of steel balls also includes a filtering device for circulating work. The material inlet of the filtering device is connected to the circulating sedimentation tank through a liquid inlet pipe so that the circulating water in the circulating sedimentation tank can enter the filtering device for filtration. The liquid outlet of the filtering device is connected to the circulating sedimentation tank through a liquid outlet pipe so that the liquid filtered by the filtering device can be discharged into the circulating sedimentation tank.

[0008] The beneficial effect of the above technical solution is that: the utility model is an improved invention, and the improvement lies in the addition of a filtering device, the material inlet of the filtering device is connected to the circulating sedimentation tank through a liquid inlet pipe, so that the circulating water in the circulating sedimentation tank can enter the filtering device for filtration, and the liquid outlet of the filtering device is connected to the circulating sedimentation tank through a liquid outlet pipe, so that the liquid filtered by the filtering device can be discharged into the circulating sedimentation tank. Through the circulation work of the filtering device, impurities such as resin powder and ultrafine iron powder can be fully filtered, the clarity of the water in the circulating sedimentation tank is maintained, the anti-rust effect of the circulating water is guaranteed, and the use time of the circulating water is extended. At the same time, the value of the filtering equipment is fully utilized, and energy waste is avoided.

[0009] Furthermore, there is a set distance between the liquid inlet pipe of the filtration equipment and the bottom wall of the circulating sedimentation tank. The circulating water treatment system of the steel ball primary grinding process also includes a temporary sedimentation tank with a volume smaller than the circulating sedimentation tank and a sewage pump. The sewage pump extends into the bottom of the circulating sedimentation tank and is provided with a sewage pump for pumping the sludge precipitated in the circulating sedimentation tank into the temporary sedimentation tank.

[0010] Furthermore, the circulating water treatment system of the steel ball primary grinding process also includes a solid-liquid separator and a suction pipe. The suction pipe extends into the upper part of the temporary sedimentation tank and is used to extract the upper liquid in the temporary sedimentation tank into the solid-liquid separator, leaving the sludge at the bottom for manual cleaning.

[0011] Furthermore, the liquid outlet of the solid-liquid separator is connected to a return pipe, and the return pipe is connected to a circulating sedimentation tank.

[0012] Furthermore, the solid-liquid separator is a suction filter.

[0013] Furthermore, the filtering equipment is a suction filter.

[0014] Furthermore, the position where the discharge pipe is connected to the circulating sedimentation tank is located at one end of the circulating sedimentation tank in the length direction, and the position where the suction pipe extends into the circulating sedimentation tank is located at the other end of the circulating sedimentation tank in the length direction.

[0015] Furthermore, the liquid inlet pipe and the liquid outlet pipe of the filtration device are located between the communication positions of the liquid discharge pipe and the liquid suction pipe with the circulation sedimentation tank respectively, and the liquid inlet pipe is arranged close to the liquid suction pipe.

[0016] Furthermore, the circulating sedimentation tank is arranged below the ground, and the temporary sedimentation tank is arranged above the ground.

[0017] Furthermore, one end of the sewage suction pipe extending into the circulating sedimentation tank can move freely, so as to suck out the sludge at various places on the bottom of the circulating sedimentation tank under manual control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the circulating water treatment system for the initial grinding process of steel balls in this utility model.

[0019] In the figure: 1. Circulating sedimentation tank; 2. Grinder; 3. Discharge pipe; 4. Suction pipe; 5. Suction pump; 6. Booster tank; 7. Temporary sedimentation tank; 8. Sewage pipe; 9. Sewage pump; 10. Solid-liquid separator; 11. Suction pipe; 12. Return pipe; 13. Filter equipment; 14. Liquid inlet pipe; 15. Liquid outlet pipe. DETAILED DESCRIPTION

[0020] In response to the technical problems existing in the prior art, the basic concept of the utility model is to add a filtering device to the circulating sedimentation tank. Through the circulating work of the filtering equipment, various impurities such as iron filings, resin powder and ultrafine iron powder in the circulating water are fully filtered out, maintaining the clarity of the water in the circulating sedimentation tank and ensuring the rust-proof effect of the circulating water.

[0021] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0022] Example 1 of the circulating water treatment system for the primary grinding process of steel balls in the utility model:

[0023] like Figure 1As shown, the circulating water treatment system for the primary grinding process of steel balls includes a circulating sedimentation tank 1, at least two grinding machines 2, a discharge pipe 3, a suction pipe 4, a suction pump 5, a booster tank 6, a temporary sedimentation tank 7, a sewage pipe 8, a sewage pump 9, a solid-liquid separator 10, a suction pipe 11, a suction pump 12, a return pipe 12, a filtering device 13, a liquid inlet pipe 14 and a liquid outlet pipe 15.

[0024] In this embodiment, there are four grinding machines 2. In other embodiments, there may be two, three, five, six, or seven or more grinding machines. The circulating water outlet of each grinding machine 2 is connected to a drainage pipe 3. The circulating water used by each grinding machine 2 is directly discharged into the same circulating sedimentation tank 1 through the drainage pipe 3. The circulating sedimentation tank 1 is set below the ground. Its volume can meet the circulating water discharge volume of each grinding machine 2 in the workshop, the precipitation of impurities in the circulating water, and the provision of relatively clean circulating water for each grinding machine 2.

[0025] The filter device 13 is used for circulating work to filter the circulating water in the circulating sedimentation tank 1. Specifically, the material inlet of the filter device 13 is connected to the circulating sedimentation tank 1 through the liquid inlet pipe 14, so that the circulating water in the circulating sedimentation tank 1 can enter the filter device 13 for filtration. The liquid outlet of the filter device 13 is connected to the circulating sedimentation tank 1 through the liquid outlet pipe 15, so that the liquid filtered by the filter device 13 can be discharged into the circulating sedimentation tank 1. Through the circulating work of the filter device 13, various impurities such as iron filings, resin powder, and ultrafine iron powder generated in the initial grinding process of the steel balls can be fully filtered, the clarity of the water in the circulating sedimentation tank 1 is maintained, the rust-proof effect of the circulating water is guaranteed, and the service life of the circulating water is extended. At the same time, the value of the filter device 13 is fully utilized, and compared with the existing technology, energy waste is avoided.

[0026] The filter device 13 in this embodiment is a suction filter. This allows the circulating water to be automatically pumped into the filter device 13 via the liquid inlet pipe 14, eliminating the need for an additional water pump. Furthermore, compared to other filter devices, the suction filter is more effective at filtering fine particles. The filter's filtration cycle time depends on the cleanliness of the circulating water in the circulating sedimentation tank 1, generally ranging from two to eight hours. The bottom lining of the suction filter is covered with a 20-50 cm thick layer of activated carbon, coal slag, fly ash, sawdust, etc. The upper layer of sludge is cleaned layer by layer regularly (either after the grinder is shut down or while the grinder is operating and the circulating water in the circulating sedimentation tank 1 is relatively clear and does not require filtration). Finally, new filter media is replaced with a particle size of 2-5 mm to ensure effective filtration of small impurities such as resin powder and ultrafine iron powder.

[0027] A suction pump 5 is provided on a suction pipe 4, which extends into the upper portion of the circulating sedimentation tank 1 and is used to extract the circulating water in the circulating sedimentation tank 1 and supply it to each grinding machine 2. A booster tank 6 is connected to the suction pipe 4 and is located between the suction pump 5 and each grinding machine 2. When multiple grinding machines 2 are turned on simultaneously, the pressure of the circulating water can be guaranteed, thereby ensuring the grinding effect. In addition, the position where the discharge pipe 3 is connected to the circulating sedimentation tank 1 is located at one end of the circulating sedimentation tank 1 in the longitudinal direction, and the position where the suction pipe 4 extends into the circulating sedimentation tank 1 is located at the other end of the circulating sedimentation tank 1 in the longitudinal direction. Due to the length of the circulating sedimentation tank 1, impurities in the circulating water that can precipitate on their own are fully precipitated, while impurities that cannot precipitate are removed by repeated filtration of the filtering device 13, ensuring that the circulating water extracted by the suction pipe 4 is relatively clean. In addition, the liquid inlet pipe 14 and the liquid outlet pipe 15 of the filtering device 13 are located between the connection positions of the discharge pipe 3 and the suction pipe 4 with the circulating sedimentation tank 1 respectively, and the liquid inlet pipe 14 is arranged close to the suction pipe 4, further ensuring the cleanliness of the circulating water drawn out by the suction pipe 4.

[0028] Furthermore, there is a set distance between the liquid inlet pipe 14 of the filtering device 13 and the bottom wall of the circulating sedimentation tank 1. Of course, the lower end of the liquid inlet pipe 14 is lower than the lower end of the liquid suction pipe 4. The above-mentioned set distance satisfies that the liquid inlet pipe 14 will not draw away the sludge settled at the bottom of the circulating sedimentation tank 1, but only draw away the circulating water mixed with resin powder and ultrafine iron powder near the top. Although the resin powder and ultrafine iron powder contained in this part of the circulating water cannot be precipitated, the amount is not large, which can extend the service life of the filtering device 13 and avoid frequent shutdowns for cleaning and replacement of filter materials.

[0029] The temporary sedimentation tank 7 is arranged above the ground, and its volume is smaller than that of the circulating sedimentation tank 1. A sewage pump 8 connects the temporary sedimentation tank 7 and the circulating sedimentation tank 1. One end of the sewage pump 8 extends into the bottom of the circulating sedimentation tank 1, and the other end extends into the upper part of the temporary sedimentation tank 7. A sewage pump 9 is arranged on the sewage pump 8, which can pump out the sludge settled at the bottom of the circulating sedimentation tank 1 into the temporary sedimentation tank 7. Therefore, generally speaking, a large amount of sludge will not accumulate in the circulating sedimentation tank 1, and no manual cleaning is required. At the same time, the end of the sewage pump 8 extending into the circulating sedimentation tank 1 can move freely. Therefore, when pumping the sludge at the bottom of the circulating sedimentation tank 1 into the temporary sedimentation tank 7, the position of the sewage pump 8 can be manually controlled to clean up all the sludge at the bottom of the circulating sedimentation tank 1. It is more flexible to use and has a better sewage pumping effect.

[0030] The suction pipe 11 connects the solid-liquid separator 10 and the temporary sedimentation tank 7. One end of the suction pipe 11 extends into the upper part of the temporary sedimentation tank 7 to extract the upper liquid in the temporary sedimentation tank 7 into the solid-liquid separator 10, leaving the sludge at the bottom for manual cleaning. Since a certain amount of water will be extracted into the temporary sedimentation tank 7 along with the sludge during the process of extracting the sludge from the bottom of the circulating sedimentation tank 1 to the temporary sedimentation tank 7, the impurities in the temporary sedimentation tank 7 can settle after standing for a period of time, and the slightly cleaner water in the upper layer can be extracted into the solid-liquid separator 10 through the suction pipe 11 for separation. The solid-liquid separator 10 in this embodiment also uses a suction filter, which has a better filtering effect on fine particles. And precisely because the water in the upper layer is slightly cleaner, the suction filter does not need to be frequently shut down for cleaning and replacement of filter media, thereby extending the service life of the solid-liquid separator 10.

[0031] At the same time, precisely because the water in the upper layer is slightly cleaner, the liquid filtered through the solid-liquid separator 10 is cleaner. For this reason, a return pipe 12 is connected to the liquid outlet of the solid-liquid separator 10, and the return pipe 12 is connected to the circulating sedimentation tank 1, saving circulating water and thus saving production costs.

[0032] In addition, since the temporary sedimentation tank 7 has a small volume, the upper water is sucked away by the suction pipe 11, and the sludge left at the end is also easy to clean, which is convenient for operation.

[0033] The working process of the circulating water treatment system for the initial grinding process of the steel ball of this utility model is as follows:

[0034] When grinding machine 2 is operating normally, used circulating water is discharged directly into circulating sedimentation tank 1 through drain pipe 3. Filtering equipment 13 filters the circulating water. The filtration time varies from two to eight hours, depending on the cleanliness of the circulating water in circulating sedimentation tank 1, to ensure the cleanliness of the circulating water extracted by suction pipe 4. Furthermore, sludge from the bottom of circulating sedimentation tank 1 is pumped out to temporary sedimentation tank 7 using sewage pump 9 at a regular interval (approximately ten minutes) daily. Once in temporary sedimentation tank 7, the sludge is allowed to settle for a period of time. The topwater is then pumped to solid-liquid separator 10 for filtration, and the bottom sediment is removed and sold to a third party.

[0035] After adopting the steel ball primary grinding process circulating water treatment system of the utility model, the originally basically opaque black water becomes transparent after circulating filtration. Adding the same rust inhibitor, the anti-rust effect after filtration is much better than before, and the circulating water can be used for a long time, saving the circulating water consumption and reducing the labor intensity of cleaning the pool.

[0036] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: one end of the sewage pipe extending into the circulating sedimentation tank can be fixed and immovable. At this time, the sewage pipe can be arranged to include multiple branch pipes, and the multiple branch pipes are merged into one pipe and then connected to the sewage pump. Each branch pipe is set at a fixed point to ensure that the sludge at the bottom of the circulating sedimentation tank can be sucked clean.

[0037] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: a temporary sedimentation tank can also be set below the ground, and of course the circulating sedimentation tank can also be set above the ground. In this case, a drainage pump needs to be installed on the drainage pipe.

[0038] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: the liquid outlet pipe of the filtering device can be arranged close to the liquid suction pipe. Of course, the liquid inlet pipe and liquid outlet pipe of the filtering device can also be arranged in a row with the liquid suction pipe in the width direction of the circulating sedimentation tank.

[0039] In other embodiments of the circulating water treatment system for the primary grinding process of steel balls: the position where the suction pipe extends into the circulating sedimentation tank can also be closer to the middle of the circulating sedimentation tank.

[0040] In other embodiments of the circulating water treatment system for the primary grinding process of steel balls: the filtering equipment may also be a filter press, in which case a separate liquid inlet pump needs to be provided on the liquid inlet pipe.

[0041] In other embodiments of the circulating water treatment system for the steel ball primary grinding process: the solid-liquid separator can also be a filter press, and in this case, a suction pump needs to be separately configured on the suction pipe.

[0042] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: the liquid discharged from the liquid outlet of the solid-liquid separator may not be returned to the circulating sedimentation tank, but may be discharged as waste liquid.

[0043] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: the suction pipe connected to the solid-liquid separator can be extended into the bottom of the temporary sedimentation tank. At this time, the liquid outlet of the solid-liquid separator is connected to the return pipe, and the return pipe is also connected to the temporary sedimentation tank. At this time, the solid-liquid separator circulates and filters the sludge in the temporary sedimentation tank. When the return water is clean, the solid-liquid separator discharges the sludge again.

[0044] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: when a temporary sedimentation tank and a suction pipe are provided, a solid-liquid separator may not be provided. At this time, after the temporary sedimentation tank has been allowed to stand still, it is only necessary to pump out the upper layer of clear water through the suction pipe and then the remaining sludge is cleaned manually.

[0045] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: a temporary sedimentation tank, a suction pipe and a solid-liquid separator may not be provided. In this case, the sewage suction pipe directly draws away the sludge at the bottom of the circulating sedimentation tank and discharges it.

[0046] In other embodiments of the circulating water treatment system for the initial grinding process of steel balls: a temporary sedimentation tank, a suction pipe, a solid-liquid separator and a sewage pipe may not be set up. At this time, the liquid inlet pipe of the filtration equipment directly extends into the bottom of the circulating sedimentation tank to filter all impurities in the circulating sedimentation tank.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. The circulating water treatment system for the initial grinding process of steel balls includes a circulating sedimentation tank, a grinding machine, a drainage pipe and a suction pipe. The drainage pipe is used to discharge the circulating water used by the grinding machine into the circulating sedimentation tank. The suction pipe is provided with a suction pump for extracting the circulating water in the circulating sedimentation tank and supplying it to the grinding machine. It is characterized by: The circulating water treatment system for the initial grinding process of steel balls also includes a filtering device for circulating work. The material inlet of the filtering device is connected to the circulating sedimentation tank through a liquid inlet pipe, so that the circulating water in the circulating sedimentation tank can enter the filtering device for filtration. The liquid outlet of the filtering device is connected to the circulating sedimentation tank through a liquid outlet pipe, so that the liquid filtered by the filtering device can be discharged into the circulating sedimentation tank.

2. The steel ball primary grinding process circulating water treatment system according to claim 1, characterized in that: There is a set distance between the liquid inlet pipe of the filtration equipment and the bottom wall of the circulating sedimentation tank. The circulating water treatment system of the steel ball primary grinding process also includes a temporary sedimentation tank with a volume smaller than the circulating sedimentation tank and a sewage pump. The sewage pump extends into the bottom of the circulating sedimentation tank and is provided with a sewage pump for pumping the sludge settled in the circulating sedimentation tank into the temporary sedimentation tank.

3. The steel ball primary grinding process circulating water treatment system according to claim 2, characterized in that: The circulating water treatment system of the steel ball primary grinding process also includes a solid-liquid separator and a suction pipe. The suction pipe extends into the upper part of the temporary sedimentation tank and is used to extract the upper liquid in the temporary sedimentation tank into the solid-liquid separator, leaving the sludge at the bottom for manual cleaning.

4. The steel ball primary grinding process circulating water treatment system according to claim 3, characterized in that: The liquid outlet of the solid-liquid separator is connected to a return pipe, and the return pipe is connected to a circulating sedimentation tank.

5. The steel ball primary grinding process circulating water treatment system according to claim 3 or 4, characterized in that: The solid-liquid separator is a suction filter.

6. The steel ball primary grinding process circulating water treatment system according to any one of claims 1 to 4, characterized in that: The filtering equipment is a suction filter.

7. The steel ball primary grinding process circulating water treatment system according to any one of claims 1 to 4, characterized in that: The position where the discharge pipe is connected to the circulating sedimentation tank is located at one end of the circulating sedimentation tank in the length direction, and the position where the suction pipe extends into the circulating sedimentation tank is located at the other end of the circulating sedimentation tank in the length direction.

8. The circulating water treatment system for the steel ball primary grinding process according to claim 7, characterized in that: The liquid inlet pipe and the liquid outlet pipe of the filtering device are located between the communication positions of the liquid discharge pipe and the liquid suction pipe with the circulating sedimentation tank respectively, and the liquid inlet pipe is arranged close to the liquid suction pipe.

9. The steel ball primary grinding process circulating water treatment system according to any one of claims 2 to 4, characterized in that: The circulating sedimentation tank is set below the ground, and the temporary sedimentation tank is set above the ground.

10. The steel ball primary grinding process circulating water treatment system according to any one of claims 2 to 4, characterized in that: One end of the sewage suction pipe extending into the circulating sedimentation tank can move freely so as to suck out the sludge from various places at the bottom of the circulating sedimentation tank under manual control.

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