CN209668946U

CN209668946U - A kind of settling tank for paper products processing sewage treatment

Info

Publication number: CN209668946U
Application number: CN201920045792.2U
Authority: CN
Inventors: 康国忠; 邱家义
Original assignee: Dongguan Longcheng Paper Co Ltd
Current assignee: Dongguan Longcheng Paper Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2019-11-22
Anticipated expiration: 2029-01-11

Abstract

The utility model relates to a kind of settling tanks for paper products processing sewage treatment, it includes draining tank and settling tank, the settling tank is located in the draining tank, the sedimentation pot bottom, which offers, leads to extraneous sewage draining exit, fixed frame is fixedly connected with above the draining tank, soft spray tube is provided on the fixed frame, the spray tube is equipped with high-pressure nozzle, the high-pressure nozzle inclination is arranged towards the settling tank inner sidewall, and the fixed mount setting has the driving mechanism for driving the high-pressure nozzle to rotate and going up and down.A kind of settling tank for paper products processing sewage treatment of the utility model has the advantages that improve effect of settling convenient for cleaning the sediment for being attached to inner tank wall.

Description

A kind of settling tank for paper products processing sewage treatment

Technical field

The utility model relates to paper products processing industry technical field of sewage, add more particularly, to one kind for paper products The settling tank of work sewage treatment.

Background technique

Currently, shortage of fresh water, pollution of waterhead aggravation are one of five overall situation problems of the world, sewage treatment is always each The important topic of state's research.In China during production of paper products, chemicals such as sodium hydroxide, sodium metasilicate etc. is largely used, For carrying out the deinking, bleaching and slurrying of waste paper, the discharge of paper products processing waste water be cause one of environmental pollution it is important Pollution sources.Sewage disposal system can all be arranged in most paper products processing factories to handle paper products processing waste water, sink Dropping pond is a link more important in sewage disposal system, is settle the large particles such as dirt, waste residue in sewage one Kind important means.

The existing settling tank for paper products processing sewage treatment, an including tank body, the side wall on the upside of tank body are provided with Apopore is passed to sewage in tank body by water pipe, and the sediment in sewage is deposited in tank base, and clear water is flowed from apopore To next link, completes sewage and settle process.Tank base is provided with sewage draining exit, when the sediment of tank base accumulates to certain journey After degree, opens sewage draining exit and sediment is discharged.

Above-mentioned prior art has the following deficiencies: with the increase of number of use, inner tank wall is easy to adhere to Sediment, when opening sewage draining exit, these sediments are difficult to be discharged below sewage draining exit, reduce the effect of settling of settling tank.

Utility model content

The purpose of this utility model is to provide a kind of settling tanks for paper products processing sewage treatment, convenient for attachment It is cleaned in the sediment of inner tank wall, has the advantages that improve effect of settling.

The above-mentioned technical purpose of the utility model has the technical scheme that one kind adds for paper products The settling tank of work sewage treatment, including draining tank and settling tank, the settling tank are located in the draining tank, the settling tank bottom Portion, which offers, leads to extraneous sewage draining exit, is fixedly connected with fixed frame above the draining tank, is provided on the fixed frame soft Property spray tube, the spray tube is equipped with high-pressure nozzle, and the high-pressure nozzle inclination is arranged towards the settling tank inner sidewall, The fixed mount setting has the driving mechanism for driving the high-pressure nozzle to rotate and going up and down.

By using above-mentioned technical proposal, high-pressure nozzle carries out water horning to the sediment of sedimentation top tank structure after opening, Sediment in settling tank collects to sedimentation pot bottom, is discharged by sewage draining exit, makes high-pressure nozzle reciprocal using driving mechanism Rotation and lifting so that cleanup area is big, cleaning effect is good, and then carry out clearly convenient for the sediment to settling tank inner tank wall It is clean, have the advantages that improve effect of settling.

The utility model is further arranged to: the driving mechanism includes the lifting sliding rail for being installed in the fixed frame, cunning Shifting is connected to the mounting base of lifting sliding rail, is rotationally connected with the fixed block of mounting base, and the fixed mount setting has for driving The lifters of mounting base lifting are stated, the mounting base is provided with the rotating member for driving fixed block to rotate, the high-pressure nozzle It is fixedly connected on the fixed block.

By using above-mentioned technical proposal, fixed block is rotatably connected in mounting base, is turned using rotating member driving fixed block It is dynamic, high-pressure nozzle can be driven to rotate, mounting base sliding is connected on lifting sliding rail, it is gone up and down using lifters drive installation seat, And then fixed block and rotating member integral elevating are driven, realize that driving high-pressure nozzle is rotated and gone up and down.

The utility model is further arranged to: the lifters are cylinder, and the cylinder is fixedly connected on the fixed frame On, the mounting base is fixedly connected on the output shaft of the cylinder.

By using above-mentioned technical proposal, cylinder is gone up and down as lifters drive installation seat, by controlling cylinder output shaft Flexible i.e. controllable high-pressure nozzle risen or fallen along lifting sliding rail, cylinder output is stablized convenient for control.

The utility model is further arranged to: the rotating member is motor, and the motor is fixedly connected on the mounting base On, the mounting base is fixedly installed in the rotation axis of the motor.

By using above-mentioned technical proposal, motor is as rotating member driving fixed block rotation, by controlling motor rotation axis The i.e. controllable high-pressure nozzle of rotation direction forward or reverse, motor output is stablized and long service life.

The utility model is further arranged to: the bottom of the settling tank is conical lower portion.

By using above-mentioned technical proposal, so that the precipitate distribution in bottom interior wall in sustained height is more uniform, It avoids precipitate bulk blocked up and is difficult to the case where clearing up.

The utility model is further arranged to: the sewage outfalls setting has sewage pipe, described sewage pipe one end and sewage draining exit It is connected, the other end is communicated with the useless pond of receipts, and the settling tank is additionally provided with for the drainage for receiving useless pond to be evacuated to the sedimentation The water pumping mechanism of tank.

By using above-mentioned technical proposal, after high-pressure nozzle water spray clears up settling tank, water follows sediment together It is discharged from sewage draining exit, and drains into the useless pond of receipts and focused on, after closing sewage draining exit, can will received in useless pond using water pumping mechanism Drainage be evacuated in sedimentation pipe again, follow sewage to carry out sedimentation filtration next time, reuse drainage, avoid wasting.

The utility model is further arranged to: the water pumping mechanism includes water inlet pipe, water pump and outlet pipe, the water inlet pipe Side wall offers multiple spillway holes, and the spillway hole is provided with filter assemblies.

By using above-mentioned technical proposal, under the action of water pump, the waste water in the useless pond of receipts is entered by filter assemblies to overflow Water hole is being pumped down in settling tank, realizes filtering.

The utility model is further arranged to: the filter assemblies include box body and filter screen, and the filter screen is fixed to be connected Be connected to fixed frame, the box body offers the inserting groove for the fixed frame grafting, the fixed frame with pass through locking member and institute Box body is stated to be detachably connected.

By using above-mentioned technical proposal, fixed frame is plugged in the inserting groove of box body and fixed frame passes through locking member and box Body is detachably connected, and when filter screen accumulates more silt, filter screen can be removed, be cleaned or replaced to it.

The utility model is further arranged to: the locking member includes grab, articulated shaft and spring, and the articulated shaft is set It sets in the box side wall, the grab is articulated with the box body by the articulated shaft, and the grab includes the company of being fixed to each other The bar portion and hook portion connect, the articulated shaft are connected to the middle position of the bar portion, and it is separate that the spring is set to the bar portion The side of the hook portion, the spring one end are fixedly connected with the bar portion, and the other end is fixedly connected with the fixed frame side wall.

By using above-mentioned technical proposal, when fixed frame is inserted into the inserting groove of box body, hook portion contradicts the side wall of fixed frame, will Its hook fastens, and rotates bar portion bar portion force when disassembly, and fixed frame can be taken by turning to hook portion and being detached from fixed frame side wall Out.

In conclusion the utility model has the following beneficial effects:

1. making high-pressure nozzle reciprocating rotation and lifting using driving mechanism after high-pressure nozzle unlatching, to sedimentation top tank structure Sediment carries out water horning, and the sediment in settling tank collects to sedimentation pot bottom, is discharged by sewage draining exit, so convenient for pair The sediment of settling tank inner tank wall is cleaned, and has the advantages that improve effect of settling；

2. sewage outfalls setting has a sewage pipe, sewage pipe is communicated with the useless pond of receipts, can be with using water pumping mechanism after closing sewage draining exit The drainage received in useless pond is evacuated in sedimentation pipe again, sewage is followed to carry out sedimentation filtration next time, drainage is reused, avoids Waste；

3. filter assemblies include box body and filter screen, filter screen is fixedly connected with fixed frame, and fixed frame is plugged in box body In inserting groove and fixed frame is detachably connected by locking member with box body, when filter screen accumulates more silt, can will Filter screen is removed, and is cleaned or is replaced to it.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the paper products processing sewage disposal system in the utility model embodiment；

Fig. 2 is the structural schematic diagram of settling tank in the utility model embodiment；

Fig. 3 is the enlarged diagram in Fig. 2 at A；

Fig. 4 is the structural schematic diagram that settling tank removes after support frame in the utility model embodiment；

Fig. 5 is the structural schematic diagram that useless pond is received in the utility model embodiment；

Fig. 6 is the structural schematic diagram of filter assemblies in the utility model embodiment；

Fig. 7 is the structural schematic diagram of stirring pool in the utility model embodiment；

Fig. 8 is the structural schematic diagram that stirring pool removes after support frame in the utility model embodiment；

Fig. 9 is the structural schematic diagram that foam case is received in the utility model embodiment.

In figure: 1, draining tank；2, settling tank；21, sewage draining exit；3, fixed frame；31, spray tube；32, high-pressure nozzle；41, it rises Sliding rail drops；42, mounting base；43, fixed block；44, cylinder；45, motor；51, sewage pipe；52, useless pond is received；53, water inlet pipe；531, Spillway hole；54, water pump；55, outlet pipe；61, box body；62, filter screen；63, fixed frame；611, inserting groove；64, grab；641, Bar portion；642, hook portion；65, articulated shaft；66, spring；11, agitator tank；12, foam tank is arranged；121, foam chamber is arranged；122, foam mouth is arranged；13, Mounting rack；131, blower；132, discharge pipe；133, driving motor；134, stirring bar；141, foam case is received；1411, foam chamber； 1412, drainage chamber；142, drainpipe；143, partition；1431, pore；144, draw water water pump；145, drinking-water pipe；146, water-supply-pipe； 15, filler pipe；16, support frame；17, water pipe is connected；111, sedimentation basin.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

As shown in Figure 1, paper products process sewage disposal system, including use connection the sequentially connected settling tank of water pipe 17, Stirring pool and sedimentation basin 111.It is connected between draining tank 1 and agitator tank 11 by connecting water pipe 17, agitator tank 11 and sedimentation basin It is connected between 111 by connecting water pipe 17, sedimentation basin 111 offers the discharge outlet (not shown) for discharging drainage. The sewage of paper products processing is delivered to settling tank progress after collecting by filter press or directly just sedimentation, sewage enter settling tank In settling tank 2, the sediment of bulky grain sinks to 2 bottom of settling tank, and drainage overflows from the tank mouth edge of settling tank 2 and enters drainage In tank 1, and then agitator tank 11 is entered by connection water pipe 17.It is stirred after chemical agent is added in agitator tank 11 using mixing component It mixes, accelerates chemical reaction velocity, the foam generated in whipping process is drained into foam chamber 121 by component of drying, by stirring Sewage connection water pipe 17 afterwards, which enters, carries out reprecipitation in sedimentation basin 111, discharged again by discharge outlet after precipitating, sewage warp It is discharged after crossing just sedimentation, stirring sufficiently reaction and reprecipitation, treatment effect is good, has the advantages that improve practicability.

As shown in Figures 2 and 3, settling tank includes draining tank 1 and settling tank 2, and settling tank 2 is located in draining tank 1, settling tank The jagged retaining ring of a circle is circumferentially provided at 2 tank mouth.Draining tank 1 is fixedly connected with support frame 16, it is whole to settling tank into Row support.In conjunction with Fig. 4, the bottom of settling tank 2 is conical lower portion, and 2 bottom of settling tank, which offers, leads to extraneous sewage draining exit 21.Filter It is fixedly connected with fixed frame 3 above water pot 1, soft spray tube 31 is provided on fixed frame 3, spray tube 31 is equipped with high pressure spray First 32, the inclination of high-pressure nozzle 32 is arranged towards 2 inner sidewall of settling tank, and fixed frame 3 is provided with for driving high-pressure nozzle 32 to rotate And the driving mechanism gone up and down.

As shown in Figures 2 and 3, driving mechanism includes the lifting sliding rail 41 for being installed in fixed frame 3, slides to be connected to go up and down and slide The mounting base 42 of rail 41, the fixed block 43 for being rotationally connected with mounting base 42.Fixed frame 3 is provided with to be gone up and down for drive installation seat 42 Lifters, lifters are cylinder 44, and cylinder 44 is fixedly connected on fixed frame 3, and mounting base 42 is fixedly connected on cylinder 44 Output shaft.Mounting base 42 is provided with the rotating member for driving fixed block 43 to rotate, and rotating member is motor 45, and motor 45 is fixed to be connected It connects in mounting base 42, mounting base 42 is fixedly installed in the rotation axis of motor 45, and high-pressure nozzle 32 is fixedly connected on fixed block 43 On.

As shown in Figures 2 and 3, fixed block 43 is rotatably connected in mounting base 42, drives 43 turns of fixed block using motor 45 It is dynamic, high-pressure nozzle 32 can be driven to rotate, the sliding of mounting base 42 is connected on lifting sliding rail 41, utilizes 44 drive installation seat of cylinder 42 liftings, and then fixed block 43 and rotating member integral elevating are driven, realize that driving high-pressure nozzle 32 is rotated and gone up and down.High-pressure nozzle Water horning is carried out to the sediment of 2 inner wall of settling tank after 32 unlatchings, the sediment in settling tank 2 collects to 2 bottom of settling tank, It is discharged by sewage draining exit 21, makes 32 reciprocating rotation of high-pressure nozzle and lifting using driving mechanism, so that cleanup area is big, cleaning Effect is good, and then convenient for cleaning the sediment of 2 inner tank wall of settling tank, has the advantages that improve effect of settling.

As shown in Figure 4 and Figure 5, sewage draining exit 21 is provided with sewage pipe 51, and 51 one end of sewage pipe is connected with sewage draining exit 21, another End is communicated with the useless pond 52 of receipts, and settling tank is additionally provided with the water pumping mechanism for the drainage for receiving useless pond 52 to be evacuated to settling tank 2.It draws water Mechanism includes water inlet pipe 53, water pump 54 and outlet pipe 55, and 53 side wall of water inlet pipe offers multiple spillway holes 531, and spillway hole 531 is set It is equipped with filter assemblies.After the water spray of high-pressure nozzle 32 clears up settling tank 2, water follows sediment together from 21 row of sewage draining exit Out, it and drains into the useless pond 52 of receipts and is focused on, after closing sewage draining exit 21, the filter in useless pond 52 can will be received using water pumping mechanism Water is evacuated in sedimentation pipe again, and sewage is followed to carry out sedimentation filtration next time, is reused drainage, is avoided wasting.

As shown in Figure 5 and Figure 6, filter assemblies include box body 61 and filter screen 62, and filter screen 62 is fixedly connected with fixed frame 63, box body 61 offers the inserting groove 611 for 63 grafting of fixed frame, and fixed frame 63 detachably connects with by locking member with box body 61 It connects.Locking member includes grab 64, articulated shaft 65 and spring 66.Articulated shaft 65 is arranged in 61 side wall of box body, and grab 64 passes through hinge Spindle 65 is articulated with box body 61.Grab 64 includes the bar portion 641 and hook portion 642 being mutually permanently connected, and articulated shaft 65 is connected to bar The middle position in portion 641.Spring 66 is set to side of the bar portion 641 far from hook portion 642, and 66 one end of spring and bar portion 641 are fixed Connection, the other end are fixedly connected with 63 side wall of fixed frame.

As shown in Figure 5 and Figure 6, when fixed frame 63 is inserted into the inserting groove 611 of box body 61, hook portion 642 contradicts fixed frame 63 Side wall is hooked and is fastened, and rotates bar portion 641 force of bar portion 641 when disassembly, is turned to hook portion 642 and is detached from fixed frame 63 Side wall can take out fixed frame 63.Fixed frame 63 is plugged in the inserting groove 611 of box body 61 and fixed frame 63 passes through locking member It is detachably connected with box body 61, when filter screen 62 accumulates more silt, filter screen 62 can be removed, it be carried out clearly It washes or replaces.

As shown in Figure 1 and Figure 7, stirring pool includes agitator tank 11 and row's foam tank 12, and agitator tank 11 is located in row's foam tank 12, stirs It mixes between tank 11 and row's foam tank 12 there are gap and formed row foam chamber 121, row's foam tank 12 is fixedly connected with support frame 16, to stirring Pond is integrally supported.It is provided with mounting rack 13 above row's foam tank 12, mixing component and blowing component are provided on mounting rack 13. Mixing component includes driving motor 133 and stirring bar 134, and driving motor 133 is fixedly connected on mounting rack 13, and stirring bar 134 is solid Surely it is connected to the rotation axis of driving motor 133, and stirring bar 134 is extended to from top to bottom in agitator tank 11.

As shown in Figure 1 and Figure 7, stirring pool is provided with multiple, and passes through connection water between the agitator tank 11 of multiple stirring pools Pipe 17 is connected.Stirring pool can carry out Multi-stage stirring equipped with multiple, increase stirring number, so that sewage reacts in agitator tank 11 It is more abundant.Simultaneously different chemical agents can also be added in multiple agitator tanks 11 for the difference of chemical component in sewage Different chemical reactions is carried out, treatment effect is increased.

As shown in fig. 7, blowing component includes the blower 131 being arranged on mounting rack 13 and the outlet air for being connected to blower 131 Pipe 132,132 nozzle of discharge pipe is fixed on 11 top of agitator tank, and the air-out direction of discharge pipe 132 is parallel to reaction solution liquid level. Since the nozzle of discharge pipe 132 is located at reaction solution liquid level and the air-out direction of discharge pipe 132 and the liquid level of reaction solution are parallel, because After this opens blower 131, it can dry against the foam of liquid level, and then foam is made to be spilled over to row's foam chamber from the edge of agitator tank 11 In 121, mixing component constantly works and is stirred, and opens blower 131 by interval, cooperates the stirring movement of mixing component, make The foam total number for obtaining liquid level in the row's of being blown to foam chamber 121, is reduced the negative effect of foam bring, improves the practical of this stirring pool Property.

As shown in figure 8, row 12 bottom of foam tank is higher than 11 bottom of agitator tank, and arranges the bottom angled setting of foam tank 12, foam is arranged The least significant end of 12 bottom of tank offers row's foam mouth 122.Row's foam mouth 122 is connected with by drainpipe 142 and receives foam case 141.Foam quilt It after the row's of blowing to foam chamber 121, converges, is finally discharged from row's foam mouth 122, foam is discharged from row's foam mouth 122 to the least significant end of foam tank Enter receipts foam case 141 using drainpipe 142 afterwards to be collected, convenient for foam concentrations processing.Row's foam tank 12 is connected with plus water Pipe 15 (referring to Fig. 7) can add water into row's foam tank 12, so that foam is easier to be discharged from row's foam mouth 122, further convenient for clearly Reason.

Partition 143 is fixedly installed in foam case 141 as shown in figure 9, receiving, partition 143 is separated to form 141 cavity of foam case is received Foam chamber 1411 and drainage chamber 1412 offer several pores 1431, drainpipe 142 and 1411 phase of foam chamber on the downside of partition 143 Connection.Foam follows water to be rushed to the foam chamber 1411 for receiving foam case 141 together, and drainage enters from the pore 1431 of partition 143 to be filtered Water cavity 1412, and foam stays in foam chamber 1411, last drainage chamber 1412 is consistent with the liquid level of foam chamber 1411, thus by foam Part clear water in chamber 1411 filters out, and then the drainage in drainage chamber 1412 can be used, and avoids wasting.

As shown in Figure 8 and Figure 9, foam case 141 is received to be provided with for 1412 clear water of drainage chamber to be delivered to the water for arranging foam tank 12 Circulation mechanism.Water circulation mechanism includes draw water water pump 144, the drinking-water pipe 145 and water-supply-pipe 146 that are connected with the water pump 144 that draws water, Drinking-water pipe 145 is connected with drainage chamber 1412, and water-supply-pipe 146 is connected with row's foam tank 12.Water pump 144 draw water for drainage chamber 1412 Water be evacuated to row's foam tank 12 to realize that water recycles, using water circulation system by the water in the drainage chamber 1412 again row's of being delivered to foam tank In 12, the foam in row's foam tank 12 is cleared up, to save water resource, avoids wasting.

The implementation principle of the present embodiment are as follows: fixed block 43 is rotatably connected in mounting base 42, is driven and is fixed using motor 45 Block 43 rotates, and high-pressure nozzle 32 can be driven to rotate, and the sliding of mounting base 42 is connected on lifting sliding rail 41, is driven using cylinder 44 Mounting base 42 is gone up and down, and then drives fixed block 43 and rotating member integral elevating, realizes that driving high-pressure nozzle 32 is rotated and gone up and down.It is high Water horning is carried out to the sediment of 2 inner wall of settling tank after pressing spray head 32 to open, the sediment in settling tank 2 is to 2 bottom of settling tank Portion collects, and is discharged by sewage draining exit 21, makes 32 reciprocating rotation of high-pressure nozzle and lifting using driving mechanism, so that cleanup area Greatly, cleaning effect is good, and then convenient for cleaning to the sediment of 2 inner tank wall of settling tank, has and improve the excellent of effect of settling Point.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims

1. a kind of settling tank for paper products processing sewage treatment, it is characterised in that: including draining tank (1) and settling tank (2), The settling tank (2) is located in the draining tank (1), and settling tank (2) bottom, which offers, leads to extraneous sewage draining exit (21), It is fixedly connected with fixed frame (3) above the draining tank (1), is provided with soft spray tube (31), institute on the fixed frame (3) It states spray tube (31) to be equipped with high-pressure nozzle (32), high-pressure nozzle (32) inclination is set towards the settling tank (2) inner sidewall It sets, the fixed frame (3) is provided with the driving mechanism for driving the high-pressure nozzle (32) to rotate and going up and down.

2. a kind of settling tank for paper products processing sewage treatment according to claim 1, it is characterised in that: the drive Motivation structure includes the lifting sliding rail (41) for being installed in the fixed frame (3), slides the mounting base for being connected to lifting sliding rail (41) (42), it is rotationally connected with the fixed block (43) of mounting base (42), the fixed frame (3) is provided with for driving the mounting base (42) lifters gone up and down, the mounting base (42) are provided with the rotating member for driving fixed block (43) to rotate, the high pressure Spray head (32) is fixedly connected on the fixed block (43).

3. a kind of settling tank for paper products processing sewage treatment according to claim 2, it is characterised in that: the liter Drop part is cylinder (44), and the cylinder (44) is fixedly connected on the fixed frame (3), and the mounting base (42) is fixedly connected on The output shaft of the cylinder (44).

4. a kind of settling tank for paper products processing sewage treatment according to claim 3, it is characterised in that: described turn Moving part is motor (45), and the motor (45) is fixedly connected on the mounting base (42), and the mounting base (42) is fixedly mounted Rotation axis in the motor (45).

5. a kind of settling tank for paper products processing sewage treatment according to any one of claims 1-4, feature Be: the bottom of the settling tank (2) is conical lower portion.

6. a kind of settling tank for paper products processing sewage treatment according to claim 5, it is characterised in that: the row Dirty mouth (21) is provided with sewage pipe (51), and described sewage pipe (51) one end is connected with sewage draining exit (21), and it is useless that the other end is communicated with receipts Pond (52), the settling tank are additionally provided with the water pumper for the drainage for receiving useless pond (52) to be evacuated to the settling tank (2) Structure.

7. a kind of settling tank for paper products processing sewage treatment according to claim 6, it is characterised in that: the pumping Water dispenser structure includes water inlet pipe (53), water pump (54) and outlet pipe (55), and water inlet pipe (53) side wall offers multiple spillway holes (531), the spillway hole (531) is provided with filter assemblies.

8. a kind of settling tank for paper products processing sewage treatment according to claim 7, it is characterised in that: the mistake Filtering component includes box body (61) and filter screen (62), and the filter screen (62) is fixedly connected with fixed frame (63), the box body (61) offer the inserting groove (611) for the fixed frame (63) grafting, the fixed frame (63) with pass through locking member with it is described Box body (61) is detachably connected.

9. a kind of settling tank for paper products processing sewage treatment according to claim 8, it is characterised in that: the lock Tight part includes grab (64), articulated shaft (65) and spring (66), and the articulated shaft (65) is arranged in the box body (61) side wall, The grab (64) is articulated with the box body (61) by the articulated shaft (65), and the grab (64) includes being mutually permanently connected Bar portion (641) and hook portion (642), the articulated shaft (65) is connected to the middle position of the bar portion (641), the spring (66) side of the bar portion (641) far from the hook portion (642), described spring (66) one end and the bar portion are set to (641) it is fixedly connected, the other end is fixedly connected with the fixed frame (63) side wall.