Paper production wastewater treatment device

Abstract

The utility model discloses a paper production wastewater treatment device which comprises a barrel (1), a filter disc (2) arranged in the middle of the barrel (1), a liquid inlet (3) arranged at the upper end of the barrel (1), a liquid outlet (4) arranged at the lower end of the barrel (1), a slag discharge port (15) arranged on the side wall of the barrel (1) on the upper side of the filter disc (2), a piston sleeve (5) arranged in the middle of the filter disc (2), and a piston (6) arranged in the piston sleeve (5) and capable of moving up and down in the piston sleeve (5). A driving mechanism for driving the piston (6) to move up and down is arranged at the upper end of the piston (6), a cleaning mechanism for cleaning the surface of the filter disc (2) is further arranged on the piston sleeve (5), and an impeller (8) is arranged at the lower end of the piston (6). The possibility of sieve pore blockage can be reduced, and the pretreatment effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wastewater treatment device, especially paper production wastewater treatment device. BACKGROUND

[0002] Paper is a material made of plant fiber (such as wood pulp, straw pulp, etc.), which is widely used for writing, printing, packaging and other purposes. During the preparation of paper, the raw materials need to be cleaned, and the usable parts are selected, and then the pulp is prepared by mechanical or chemical means. After pulping, cleaning and bleaching are usually required, and after bleaching, shaping and drying are completed, the required paper is finally cut and trimmed. A large amount of wastewater is generated during the production of paper, and there are a large amount of impurities and chemical components in the wastewater, which needs to be treated before discharge. The wastewater treatment usually includes pretreatment, biological treatment, advanced treatment, sludge treatment and other links. In the pretreatment link, most of the solid impurities in the wastewater are removed. However, the paper pulp and other components in the paper production wastewater can easily cause the blockage of the screen hole, affecting the pretreatment effect. SUMMARY

[0003] The utility model aims at providing a paper production wastewater treatment device. It can reduce the possibility of screen hole blockage and improve the pretreatment effect.

[0004] The technical scheme of the utility model: a paper production wastewater treatment device, including the cylinder, the cylinder middle part is equipped with the filter disc, the cylinder upper end is equipped with the liquid inlet, the cylinder lower extreme is equipped with the liquid outlet, the cylinder lateral wall of filter disc upper side is equipped with the discharge port, the filter disc middle part is equipped with the piston sleeve, is equipped with the piston that can move up and down in the piston sleeve in the piston sleeve, the piston upper end is equipped with the drive mechanism that drives the piston to move up and down, the piston sleeve still is equipped with the cleaning mechanism that carries out the cleaning of filter disc surface, the piston lower extreme is equipped with the impeller.

[0005] In the aforementioned paper production wastewater treatment device, the drive mechanism includes a connecting rod connected to the center mounting seat of the upper end of the piston, a rotating rod provided at the upper end of the connecting rod to drive the connecting rod to swing, and a motor output shaft connected to one end of the rotating rod, and the other end of the rotating rod is rotatably connected to the connecting rod.

[0006] In the aforementioned paper production wastewater treatment device, the cleaning mechanism includes a rotating sleeve provided on the upper end of the piston sleeve and rotatable relative to the piston sleeve, a cleaning brush provided on the upper end of the rotating sleeve for cleaning the surface of the filter disc, a spiral guide groove provided in the rotating sleeve, a guide block provided in the guide groove, and a connecting block connecting the upper end surface of the piston through the lower end of the guide block, and the connecting block is located at the edge of the upper end of the piston.

[0007] Compared with the prior art, the utility model discloses drive mechanism drives piston to move up and down, make piston drive cleaning mechanism to clean the surface of filter disc in the process of moving, and the impeller can drive the water of downside to move upward, and the filter hole is backflushed, avoids the filter disc to be blocked, and the pretreatment effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the structural schematic diagram of the utility model.

[0009] The mark in the drawing is: 1 - cylinder, 2 - filter disc, 3 - liquid inlet, 4 - liquid outlet, 5 - piston sleeve, 6 - piston, 7 - connecting rod, 8 - impeller, 9 - rotating rod, 10 - rotating sleeve, 11 - cleaning brush, 12 - guide groove, 13 - guide block, 14 - connecting block, 15 - slag outlet. DETAILED DESCRIPTION

[0010] The utility model will be further explained in connection with the drawings and examples, but not as the basis for the limitation of the utility model.

[0011] Example. A paper production wastewater treatment device constitutes as shown in Figure 1 The cylinder 1 middle part is equipped with the filter disc 2, and the cylinder 1 upper end is equipped with the liquid inlet 3, and the cylinder 1 lower end is equipped with the liquid outlet 4, and the cylinder 1 side wall of filter disc 2 upper side is equipped with the slag outlet 15, and the filter disc 2 middle part is equipped with the piston sleeve 5, and the piston sleeve 5 is equipped with the piston 6 that can move up and down in the piston sleeve 5, and the piston 6 upper end is equipped with the drive mechanism that drives the piston 6 to move up and down, and the piston sleeve 5 is further equipped with the cleaning mechanism that cleans the surface of filter disc 2, and the piston 6 lower end is equipped with the impeller 8.

[0012] The drive mechanism includes the connecting rod 7 connected with the mounting seat center of piston 6 upper end, and the connecting rod 7 upper end is equipped with the rotating rod 9 that drives the connecting rod 7 to swing, and the rotating rod 9 one end is connected with motor output shaft, and the rotating rod 9 other end is rotatably connected with the connecting rod 7.

[0013] The cleaning mechanism includes the rotating sleeve 10 that is arranged on the piston sleeve 5 upper end and can rotate relative to the piston sleeve 5, and the rotating sleeve 10 upper end is equipped with the cleaning brush 11 that is used for cleaning the surface of filter disc 2, and the rotating sleeve 10 is equipped with the spiral guide groove 12, and the guide groove 12 is equipped with the guide block 13, and the guide block 13 lower end is connected with the piston 6 upper end face through the connecting block 14, and the connecting block 14 is located on the piston 6 upper end edge.

[0014] The utility model discloses a principle: the sewage is gradually added to the cylinder 1 from the liquid inlet 3, and the single processing total amount rate is greater than the volume of the lower side of filter disc 2, in the initial stage of wastewater treatment, the sundries on filter disc 2 are less, and the sewage can quickly fall under the action of gravity, falls to the lower side of filter disc 2, and the control valve is equipped at the liquid outlet 4, and the control valve is in the closed state, and the wastewater volume of the lower side of filter disc 2 will gradually increase. In the process of wastewater filtration, the impurities on filter disc 2 continuously accumulate, resulting in the decline of the filtering performance of filter disc. At this time, the piston is driven to move linearly up and down by the driving mechanism, the motor is arranged on the lateral wall outside the cylinder 1, the piston 6 moves up and down and will cooperate with the rotating sleeve 10 through the connecting block 14, so that the rotating sleeve 10 rotates, the piston 6 moves vertically upwards, the guide block 13 presses the guide groove 12, and the rotating sleeve 10 rotates, so that the cleaning brush on the rotating sleeve 10 can complete the cleaning of the surface of filter disc, and in the process of the piston moving up and down, the waste liquid moves up and down in the piston sleeve, so that the wastewater on the filter disc fluctuates more, and the impurity deposition is reduced. Finally, after the single filtration work is completed, a large amount of impurities will accumulate on the filter disc, and the impurities are discharged from the slag discharge port 15. Part of the impurities will be stuck on the surface of filter disc, and the cleaning brush cannot completely scrape off the impurities, and since the wastewater volume treated at a time is slightly greater than the volume of the lower side of filter disc, in the process of the piston 6 moving up and down, the impeller 8 is arranged on the lower end of the piston 6 and arranged at the lower side of filter disc 2, the impeller rotates, the water flows, and part of the liquid at the lower part of filter disc passes through filter disc 2 from bottom to top under the action of the impeller 8, the impurities in the filter hole are extruded, the filter disc is cleaned, finally the impurities are discharged from the slag discharge port, and the filtrate is discharged from the liquid outlet, and in the process of the piston moving up and down, part of the waste liquid moves in the piston. Further, liquid can be added to the cylinder 1 from the liquid outlet, so that the water flowing upwards of filter disc is increased, the impeller is arranged, so that the water flow is more uniform, so that the filter disc can be fully backwashed.

Claims

1. A wastewater treatment device for paper production, characterized in that: The utility model relates to a filter device, including cylinder (1), the middle part of cylinder (1) is equipped with filter disc (2), the upper end of cylinder (1) is equipped with liquid inlet (3), the lower end of cylinder (1) is equipped with liquid outlet (4), the lateral wall of cylinder (1) of filter disc (2) upside is equipped with slagging-off port (15), the middle part of filter disc (2) is equipped with piston sleeve (5), the piston sleeve (5) is equipped with the piston (6) that can move up and down in piston sleeve (5), the upper end of piston (6) is equipped with drive mechanism that drives piston (6) moves up and down, piston sleeve (5) still is equipped with the cleaning mechanism that carries out the cleaning to filter disc (2) surface, the lower end of piston (6) is equipped with impeller (8).

2. A paper production wastewater treatment apparatus according to claim 1, characterized in that: The drive mechanism includes a connecting rod (7) connected to the center of the upper end of the piston (6), the upper end of the connecting rod (7) is provided with a rotating rod (9) for driving the connecting rod (7) to swing, one end of the rotating rod (9) is connected to the output shaft of the motor, and the other end of the rotating rod (9) is rotatably connected to the connecting rod (7).

3. A paper production wastewater treatment apparatus according to claim 1, characterized in that: The cleaning mechanism includes a rotating sleeve (10) provided on the upper end of the piston sleeve (5) and rotatable relative to the piston sleeve (5), the upper end of the rotating sleeve (10) is provided with a cleaning brush (11) for cleaning the surface of the filter disc (2), the rotating sleeve (10) is provided with a spiral guide groove (12) therein, the guide groove (12) is provided with a guide block (13) therein, the lower end of the guide block (13) is connected to the upper end surface of the piston (6) through a connecting block (14), and the connecting block (14) is located at the edge of the upper end of the piston (6).

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