Wastewater treatment mechanism

Abstract

The wastewater treatment mechanism comprises a stacked screw machine and a water storage tank, an overflow plate is arranged in the water storage tank and divides an inner cavity of the water storage tank into a settling zone and a clear water zone, the settling zone is communicated with the liquid outlet end of the stacked screw machine, and when the liquid storage level of the settling zone is higher than the overflow plate, liquid can overflow the overflow plate and enter the clear water zone; according to the wastewater treatment mechanism, reliable solid-liquid separation can be achieved through the stacked screw machine, secondary cleaning of liquid can be achieved through standing deposition of the settling area, and therefore it is ensured that the liquid entering the clear water area is clean and free of impurities; and the cleaning liquid in the clear water area can be reutilized, so that the effects of saving energy and reducing consumption are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of abrasive wastewater treatment, and particularly relates to a wastewater treatment mechanism. BACKGROUND

[0002] Abrasive is widely used in deburring, polishing, rounding, descaling and other treatments of various workpieces. In order to improve the grinding effect, the abrasive often needs to be mixed with chemical reagents such as brightener and polishing liquid. In the grinding process, water needs to be continuously added to play the role of cooling and washing abrasive dust. Therefore, as the grinding proceeds, wastewater mixed with chemical reagents and abrasive dust is generated.

[0003] Traditional equipment often reserves a large-volume pit for collecting wastewater, and then discharges the wastewater after simple treatment or entrusts a special environmental protection company to treat the wastewater. These treatment methods not only take time and effort, but also cause waste of resources. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art and provide a wastewater treatment mechanism.

[0005] To achieve the above technical purpose, the present application provides a wastewater treatment mechanism, which comprises: a screw stacker for solid-liquid separation of wastewater; and a water storage tank arranged downstream of the screw stacker and used for receiving liquid discharged by the screw stacker. An overflow plate is arranged in the water storage tank, and the overflow plate divides the inner cavity of the water storage tank into a sedimentation zone and a clean water zone. The sedimentation zone is connected to the liquid outlet end of the screw stacker. When the liquid level in the sedimentation zone is higher than the overflow plate, the liquid can overflow the overflow plate and enter the clean water zone.

[0006] Further, the screw stacker comprises a liquid inlet end, a liquid outlet end and a sludge outlet end. Wastewater enters the screw stacker through the liquid inlet end. After solid-liquid separation, the discharged liquid enters the water storage tank through the liquid outlet end, and the extruded sludge is discharged through the sludge outlet end. The wastewater treatment mechanism further comprises a waste tank connected to the sludge outlet end and used for collecting the discharged sludge.

[0007] Further, the wastewater treatment mechanism further comprises a preliminary water tank arranged upstream of the screw stacker and used for conveying wastewater to the screw stacker. A liquid inlet and a reagent inlet are arranged on the preliminary water tank. Wastewater can enter the preliminary water tank through the liquid inlet, and reagents can enter the preliminary water tank through the reagent inlet. When reagents are needed to separate sludge, the wastewater and the reagents can be premixed in the preliminary water tank.

[0008] Further, a sieve plate is arranged in the clean water zone, and the sieve plate is used for filtering impurities in the liquid.

[0009] Further, at least two sieve plates are arranged in the clean water zone. From top to bottom, the sieve holes on the sieve plates gradually decrease in size.

[0010] Further, the wastewater treatment mechanism further comprises a first water pump, which is used to pump the liquid in the clean water area into the downstream water using equipment.

[0011] Further, the wastewater treatment mechanism further comprises a float ball switch, which is used to monitor the liquid level of the clean water area.

[0012] Further, the wastewater treatment mechanism further comprises a wastewater tank, which is arranged upstream of the spiral machine and is used to store the wastewater to be treated.

[0013] Further, the wastewater treatment mechanism further comprises a stirrer, which is used to stir the wastewater in the wastewater tank so as to avoid the deposition or coagulation of sludge in the wastewater.

[0014] Further, the wastewater treatment mechanism further comprises a second water pump, which is used to pump the wastewater in the wastewater tank into the spiral machine.

[0015] The present application provides a wastewater treatment mechanism, which comprises a spiral machine and a water storage tank, wherein an overflow plate is arranged in the water storage tank, the overflow plate separates the inner cavity of the water storage tank into a sedimentation area and a clean water area, the sedimentation area is communicated with the liquid outlet end of the spiral machine, and when the liquid storage level of the sedimentation area is higher than the overflow plate, the liquid can overflow the overflow plate and enter the clean water area. The wastewater treatment mechanism provided by the present application can realize reliable solid-liquid separation through the spiral machine, and can realize secondary cleaning of the liquid through the standing deposition of the sedimentation area, so as to ensure that the liquid entering the clean water area is clean and free of impurities. The clean liquid in the clean water area can be used again, thereby playing a role in energy saving and consumption reduction. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a wastewater treatment mechanism provided by the present application. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0018] The application provides a wastewater treatment mechanism, comprising: a screw stacker 10 for solid-liquid separation of wastewater; and a water storage tank 20 arranged downstream of the screw stacker 10 and used for receiving liquid discharged by the screw stacker 10; wherein the water storage tank 20 is provided with an overflow plate 21, the overflow plate 21 divides an inner cavity of the water storage tank 20 into a sedimentation area 20a and a clean water area 20b; the sedimentation area 20a is communicated with a liquid outlet end of the screw stacker 10; and when a liquid level of the sedimentation area 20a is higher than the overflow plate 21, the liquid can overflow the overflow plate 21 and enter the clean water area 20b.

[0019] Specifically refer to Figure 1 In the illustrated embodiment, the water storage tank 20 is arranged on the left side of the screw stacker 10, the screw stacker 10 is mounted on a support, and the liquid outlet end of the screw stacker 10 is located above the water storage tank 20; the top end of the water storage tank 20 is provided with an opening, and the opening is communicated with the liquid outlet end of the screw stacker 10.

[0020] After the wastewater enters the screw stacker 10, the helical shaft in the warehouse of the screw stacker 10 rotates reversely, and in the process of pushing the sewage forward to spiral feed, the liquid is gradually discharged and the sludge is concentrated. The discharged liquid can enter the water storage tank 20 along the liquid outlet end.

[0021] Continue to refer to Figure 1 The water storage tank 20 is provided with an overflow plate 21, the overflow plate 21 divides the inner cavity of the water storage tank 20 into two parts, the left chamber is the clean water area 20b, and the right chamber is the sedimentation area 20a. The height of the overflow plate 21 is less than the height of the water storage tank 20, so that the overflow plate 21 and the top of the inner cavity of the water storage tank 20 have a gap, and the gap communicates the sedimentation area 20a and the clean water area 20b.

[0022] The liquid discharged by the screw stacker 10 enters the sedimentation area 20a. As the wastewater treatment continues, the liquid in the sedimentation area 20a accumulates and the liquid level rises, and when the liquid level is higher than the overflow plate 21, the liquid that is too high can pass through the gap and enter the clean water area 20b.

[0023] The sedimentation area 20a has a certain volume, and the liquid discharged by the screw stacker 10 can be left in the sedimentation area 20a. In this process, if the liquid still contains solid impurities, the solid impurities can naturally sink downward, thereby achieving secondary cleaning of the discharged liquid.

[0024] The wastewater treatment mechanism provided by the application can realize reliable solid-liquid separation through the screw stacker 10, and can realize secondary cleaning of the liquid through the standing deposition of the sedimentation area 20a, so as to ensure that the liquid entering the clean water area 20b is clean and free of impurities.

[0025] Optionally, the clean water area 20b is communicated with a grinding device, and the clean liquid in the clean water area 20b can be directly used in the grinding device to participate in the grinding work.

[0026] Specifically, the cleaning liquid is added into the abrasive, and becomes waste water during the grinding process. The waste water enters the stacked screw machine 10 to realize solid-liquid separation. The separated liquid enters the sedimentation area 20a to realize static deposition. The cleaning liquid enters the clean water area 20b and can be added into the abrasive again.

[0027] Through the waste water treatment mechanism provided by the present application, the liquid can be recycled, thereby playing a role in energy saving and consumption reduction.

[0028] In an embodiment, the stacked screw machine 10 includes a liquid inlet end, a liquid outlet end and a sludge outlet end. The waste water enters the stacked screw machine 10 through the liquid inlet end. After solid-liquid separation, the separated liquid enters the water storage tank 20 through the liquid outlet end, and the extruded sludge is discharged through the sludge outlet end.

[0029] For example, Figure 1 In the embodiment shown, the liquid inlet end is arranged at the top of the stacked screw machine 10, and the waste water can be poured into the machine bin of the stacked screw machine 10 through the liquid inlet end. The machine bin of the stacked screw machine 10 is arranged to be inclined upward from left to right. The liquid outlet end is arranged at the left side of the machine bin, and the sludge outlet end is arranged at the right side of the machine bin. The separated liquid can actively flow to the left under the influence of gravity and finally flow out of the liquid outlet end into the sedimentation area 20a. The extruded sludge can move to the right under the push of the screw shaft and finally be discharged from the sludge outlet end.

[0030] Optionally, the waste water treatment mechanism further includes a waste tank, which is communicated with the sludge outlet end and used for collecting the discharged sludge.

[0031] Since the stacked screw machine 10 is installed on the support and arranged to be higher than the ground, the waste tank can be directly placed below the sludge outlet end to receive the naturally falling sludge.

[0032] In actual use, the worker can clean or replace the waste tank at regular time or on demand, or a moving structure such as an ACV trolley can be arranged to realize automatic replacement of the waste tank.

[0033] Optionally, the waste water treatment mechanism provided by the present application further includes a standby water tank 31, which is arranged upstream of the stacked screw machine 10 and used for delivering waste water to the stacked screw machine 10.

[0034] In an embodiment, the waste liquid production amount of the water-using equipment (such as a grinding equipment) upstream is greater than the waste liquid treatment amount of the stacked screw machine 10. At this time, the standby water tank 31 can be used for temporarily storing waste water to avoid liquid line overload.

[0035] Optionally, the standby water tank 31 has a filter screen. When the standby water tank 31 is used for temporarily storing waste water, the filter screen can filter out a part of solid impurities with large volume.

[0036] In another embodiment, the preparation water tank 31 is provided with a liquid inlet and a medicament inlet. The wastewater can enter the preparation water tank 31 through the liquid inlet, and the medicament can enter the preparation water tank 31 through the medicament inlet. When the medicament needs to be added to separate the sludge, the wastewater and the medicament can be pre-mixed in the preparation water tank 31.

[0037] The discharge standard or secondary utilization standard of wastewater treatment may vary depending on the composition of the abrasive and related chemical reagents. In some cases, flocculants and coagulants such as polyaluminum chloride, ferric chloride, calcium hydroxide, etc. need to be added during wastewater treatment to precipitate suspended solids and purify water quality. Alternatively, coagulants such as polyacrylamide can be added to enhance flocculation and improve sedimentation efficiency. Alternatively, pH adjusters such as sodium hydroxide, sulfuric acid, etc. can be added to adjust the pH of the wastewater. Alternatively, disinfectants such as chlorine, ozone, etc. can be added to kill or inhibit pathogenic microorganisms to ensure water safety, etc.

[0038] The preparation water tank 31 is provided with a medicament inlet. When the medicament needs to be added, the medicament inlet is opened, and the medicament can be added. When the medicament does not need to be added, the medicament inlet is closed, and the preparation water tank 31 serves as a pipeline for the flow and storage of the wastewater.

[0039] Optionally, the preparation water tank 31 is provided with a stirrer, which can be a rotating blade or a screw. When the medicament is added, the stirrer is started to facilitate the mixing of the medicament and the wastewater.

[0040] Optionally, the clean water area 20b is provided with a sieve plate 1, which is used to filter impurities in the liquid.

[0041] In some cases, there may be light solid impurities remaining in the liquid to be removed. These impurities are difficult to naturally settle due to their low density and may overflow the overflow plate 21 into the clean water area 20b along with the cleaning liquid. If not treated in time, the increase in solid impurities in the clean water area 20b may affect the water quality and block the water outlet.

[0042] Therefore, the clean water area 20b is provided with a sieve plate 1, which has sieve holes. The liquid can flow through the sieve holes to the bottom of the clean water area 20b, while the solid impurities are blocked by the sieve plate 1.

[0043] At this time, the water outlet of the clean water area 20b is preferably located at the bottom of the clean water area 20b, so that the water outlet is lower than the sieve plate 1, and the sieve plate 1 can effectively achieve three times of cleaning.

[0044] Optionally, the clean water area 20b is provided with at least two layers of sieve plates 1, and the sieve holes on the sieve plates 1 gradually decrease in size from top to bottom.

[0045] The added screen plate 1 can ensure the filtering effect of impurities. From top to bottom, the hole diameter of the screen hole of the screen plate 1 is gradually reduced, and the graded filtering can be realized. Specifically, the screen hole of the screen plate 1 arranged on the upper layer has a large hole diameter, and small-particle impurities can pass through the upper layer of the screen plate 1. However, as the hole diameter of the screen hole becomes smaller, finally, the small-particle impurities will be blocked by the lower layer of the screen plate 1. In this way, a large amount of impurities can be avoided to be left on the same layer of the screen plate 1, and the situation that the screen hole is blocked and the clean water area 20b is affected to store liquid can be avoided.

[0046] Optionally, the wastewater treatment mechanism provided by the application further comprises a first water pump 41, which is used to pump the liquid in the clean water area 20b into the downstream water-using equipment.

[0047] In an embodiment, the water outlet of the clean water area 20b is arranged on the side wall of the water storage tank 20, and the position of the water outlet is close to the bottom wall of the water storage tank 20. The first water pump 41 is connected to the water outlet through a water pipe, the other end of the water pipe is opposite to the water-using equipment, and a valve is further arranged on the water pipe; when the water is used, the valve is opened, the first water pump 41 is started, and the clean liquid in the clean water area 20b can be sprayed to the water-using equipment through the water outlet and along the water pipe.

[0048] Optionally, the wastewater treatment mechanism provided by the application further comprises a float switch 42, which is used to monitor the liquid level of the clean water area 20b.

[0049] In an embodiment, the float switch 42 is used to detect the highest liquid level. When the liquid level of the stored liquid in the clean water area 20b reaches the highest liquid level, the float switch 42 can transmit a signal to the control system, and the control system can drain the liquid or notify the staff to process, so as to avoid the problem that the overflow plate 21 is invalid or the cartridge is burst due to the too high liquid level.

[0050] In another embodiment, the float switch 42 is used to detect the lowest liquid level. When the liquid level of the stored liquid in the clean water area 20b is too low, the float switch 42 can transmit a signal to the control system, and the control system can block the clean water area 20b to continue to supply liquid to the water-using equipment or notify the staff to understand the problem.

[0051] Optionally, the wastewater treatment mechanism provided by the application further comprises a wastewater tank 32, which is arranged upstream of the spiral machine 10 and is used to store the wastewater to be treated.

[0052] In an embodiment, the wastewater tank 32 is arranged downstream of the water-using equipment, and the wastewater discharged by the water-using equipment first enters the wastewater tank 32. The wastewater tank 32 has a certain volume and can effectively store wastewater to match the working rhythm of the downstream spiral machine 10.

[0053] Optionally, the wastewater treatment mechanism provided by the present application further comprises a stirrer 50, which is used to stir the wastewater in the wastewater tank 32, so as to avoid the deposition or coagulation of sludge in the wastewater.

[0054] When the amount of waste liquid generated by the upstream water using equipment is much larger than the waste liquid treatment capacity of the stacked screw machine 10, a large amount of wastewater will be stored in the wastewater tank 32. If the wastewater remains in the wastewater tank 32 for a long time, the solid substances in the wastewater are easy to deposit or coagulate, which will affect the water quality and the solid-liquid separation effect of the stacked screw machine 10, and may also cause problems such as blocking of the water flow pipeline and contamination of the wastewater tank 32.

[0055] Therefore, the stirrer 50 is arranged in the wastewater tank 32, and the wastewater in the wastewater tank 32 is stirred by the stirrer 50 at a time or at a fixed time, so as to effectively avoid the deposition or coagulation of sludge in the wastewater and maintain the homogeneous suspension state of the wastewater.

[0056] Figure 1 In the embodiment shown, the stirrer 50 comprises a stirring motor, a stirring shaft and stirring blades, the fixed end of the stirring motor is arranged at the top of the wastewater tank 32, the movable end is connected with the stirring shaft, the stirring shaft is inserted into the wastewater tank 32, and at least two stirring blades are arranged on the stirring shaft. During the storage of the wastewater tank 32, the stirring motor can drive the stirring shaft to rotate and drive the stirring blades to revolve, and the stirring blades can stir the wastewater, so as to avoid the deposition or coagulation of sludge in the wastewater.

[0057] Optionally, the wastewater treatment mechanism provided by the present application further comprises a second water pump 43, which is used to pump the wastewater in the wastewater tank 32 into the stacked screw machine 10.

[0058] Figure 1 In the embodiment shown, the top of the wastewater tank 32 is provided with the stirrer 50, the first water pump 41 and the second water pump 43, the first water pump 41 and the second water pump 43 are arranged opposite to each other on the two sides of the stirrer 50, the first water pump 41 is connected with the clean water area 20b and the water using equipment, and the second water pump 43 is connected with the wastewater tank 32 and the standby tank 31; when the stacked screw machine 10 is working, the second water pump 43 is started, which can pump the wastewater in the homogeneous suspension state into the standby tank 31 and mix with the medicament; the mixed waste liquid enters the stacked screw machine 10 to perform solid-liquid separation; the separated liquid is discharged into the sedimentation area 20a and becomes clean liquid by standing deposition; after the liquid level of the sedimentation area 20a is higher than the overflow plate 21, the clean liquid enters the clean water area 20b; when water is needed, the first water pump 41 is started, which can pump the clean liquid in the clean water area 20b into the water using equipment; thus, the recycling of the liquid is realized.

[0059] The above embodiments only express several implementation ways of the present application, and the description is specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A wastewater treatment mechanism, characterized in that, include: Screw press (10) is used for solid-liquid separation of wastewater; A water storage tank (20) is located downstream of the screw press (10) and is used to receive the liquid discharged from the screw press (10); The water storage tank (20) is provided with an overflow plate (21), which divides the inner cavity of the water storage tank (20) into a sedimentation zone (20a) and a clear water zone (20b). The sedimentation zone (20a) is connected to the liquid outlet end of the screw press (10); When the liquid level in the sedimentation zone (20a) is higher than that in the overflow plate (21), the liquid can overflow the overflow plate (21) and enter the clear water zone (20b).

2. The wastewater treatment apparatus according to claim 1, characterized in that, The screw press (10) includes an inlet end, an outlet end and a sludge outlet end. Wastewater enters the screw press (10) through the inlet end. After solid-liquid separation, the liquid that is separated enters the water storage tank (20) through the outlet end, and the sludge that is squeezed out is discharged through the sludge outlet end. The wastewater treatment facility also includes a waste bin, which is connected to the sludge discharge end and is used to collect the discharged sludge.

3. The wastewater treatment apparatus according to claim 1, characterized in that, It also includes a preparatory water tank (31), which is located upstream of the screw press (10) and is used to transport wastewater to the screw press (10); The preparation water tank (31) is provided with a liquid inlet and a medicine inlet. Wastewater can enter the preparation water tank (31) through the liquid inlet, and medicine can enter the preparation water tank (31) through the medicine inlet. When it is necessary to use chemicals to separate sludge, the wastewater and chemicals can be premixed in the prepared water tank (31).

4. The wastewater treatment apparatus according to claim 1, characterized in that, The clear water zone (20b) is provided with a sieve plate (1), which is used to filter impurities in the liquid.

5. The wastewater treatment apparatus according to claim 4, characterized in that, The clear water zone (20b) is provided with at least two layers of the sieve plate (1), and the sieve hole diameter on the sieve plate (1) gradually decreases from top to bottom.

6. The wastewater treatment apparatus according to claim 1, characterized in that, It also includes a first water pump (41) for pumping liquid from the clean water zone (20b) into downstream water-using equipment.

7. The wastewater treatment apparatus according to claim 1, characterized in that, It also includes a float switch (42) for monitoring the liquid level in the clear water zone (20b).

8. The wastewater treatment apparatus according to any one of claims 1-7, characterized in that, It also includes a wastewater tank (32), which is located upstream of the screw press (10) and is used to store wastewater to be treated.

9. The wastewater treatment apparatus according to claim 8, characterized in that, It also includes a stirrer (50) for stirring the wastewater in the wastewater tank (32) to prevent sludge from settling or condensing in the wastewater.

10. The wastewater treatment apparatus according to claim 8, characterized in that, It also includes a second water pump (43), which is used to pump wastewater from the wastewater tank (32) into the screw press (10).

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