CN111718036A

CN111718036A - Domestic sewage environmental protection purifies preliminary treatment pond

Info

Publication number: CN111718036A
Application number: CN202010649300.8A
Authority: CN
Inventors: 张凤珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2020-09-29

Abstract

The invention discloses an environment-friendly domestic sewage purification pretreatment tank which comprises a treatment tank, wherein a water inlet is formed in the outer side wall of the treatment tank, mounting grooves are formed in the inner sides of the water inlet and are matched with a filter screen, a machine room is arranged in the treatment tank, an adjusting tank is arranged below the inner storage of the treatment tank, connecting blocks are arranged on the inner side walls of the adjusting tank, threaded holes are formed in the outer side walls of the connecting blocks and are matched with threaded rods, and a rubber protective cover is arranged on the outer side of each connecting block. This domestic sewage environmental protection purifies preliminary treatment pond can carry out prefiltration to the water inlet at mounting groove and filter screen, has avoided great debris to pile up at the water inlet, causes the water inlet to block up to reduced the device's work efficiency, be connected through the block of mounting groove with the filter screen simultaneously, be convenient for regularly clear up the filter screen, also perhaps change the filter screen, improved the device's practicality.

Description

Domestic sewage environmental protection purifies preliminary treatment pond

Technical Field

The invention relates to the technical field related to domestic sewage treatment, in particular to an environment-friendly domestic sewage purification pretreatment tank.

Background

The domestic sewage is the waste water discharged in daily life of residents, mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like, the pollutants contained in the domestic sewage are mainly organic matters, the organic matters existing in the domestic sewage are extremely unstable and easy to decay to generate stink, bacteria and pathogens are propagated in large quantities by taking the organic matters in the domestic sewage as nutrients, so that infectious diseases can spread and spread, and the domestic sewage is from the aspects of urban domestic sewage, hospital sewage, garbage, ground runoff and the like. The pathogenic microorganisms are characterized by large quantity; wide distribution and long survival time; the method has the advantages that the propagation speed is high, resistance is easy to generate, and the resistance is difficult to eliminate, after traditional secondary biochemical sewage treatment and chlorination disinfection, certain pathogenic microorganisms and viruses can still survive in a large amount, pollutants enter human bodies through multiple ways and live in the human bodies to cause human body diseases, the increase of inorganic salt can improve the osmotic pressure of water, and has adverse effects on the growth of freshwater organisms and plants, and salt in saline-alkali areas, ground water and underground water further harms the soil quality, so the domestic sewage needs to be treated before being discharged, and therefore, a domestic sewage environment-friendly purification pretreatment pool is needed.

Domestic sewage environmental protection purification preliminary treatment pond of modern use does not possess filtering capability when the water inlet intake, leads to the water inlet to block up easily and the inside drying effect of computer lab is poor to lead to the inside apparatus of computer lab and electronic component to break down easily or damage, improved maintenance cost scheduling problem.

Disclosure of Invention

The invention aims to provide an environment-friendly domestic sewage purification pretreatment tank, which aims to solve the problems that the modern domestic sewage purification pretreatment tank in the background technology does not have a filtering function when a water inlet enters water, so that the water inlet is easy to be blocked, the drying effect in a machine room is poor, instruments and electronic elements in the machine room are easy to break down or damage, the maintenance cost is increased, and the like.

In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly domestic sewage purification pretreatment tank comprises a treatment tank, wherein a water inlet is formed in the outer side wall of the treatment tank, mounting grooves are formed in the inner side of the water inlet, the mounting grooves are matched with a filter screen for installation, a machine room is arranged in the inner side of the treatment tank, a regulating tank is arranged below the inner side of the treatment tank, the inner side wall of the regulating tank is provided with a connecting block, the outer side wall of the connecting block is provided with threaded holes, the threaded holes are matched with threaded rods for installation, the outer side of the connecting block is provided with a rubber protective cover, the outer side wall of the connecting block is provided with an anthracite filter plate, a first water pump is arranged above the inner side of the machine room, a first water pipe is arranged on the outer side wall of the first water pump, a sedimentation tank is arranged on one side of the regulating tank, an, the outer side wall of the second water pump is provided with a second water pipe, a mud suction pump is arranged below the inner side of the machine room, the outer side wall of the mud suction pump is provided with a mud suction pipe, one side of the sedimentation tank is provided with a disinfection tank, a third water pump is arranged below the inner side of the machine room, the outer side wall of the third water pump is provided with a third water pipe, the outer side wall of the disinfection tank is provided with a sampling pipe, the inner side of the sampling pipe is provided with a sealing block, the outer side of the sampling pipe is provided with a rotating shaft, a rotating handle is arranged in front of the outer side of the rotating shaft, the top end of the inner side of the machine room is provided with a hydraulic cylinder, a hydraulic rod is arranged below the outer side of the hydraulic cylinder, an installation block is arranged below the outer side of the hydraulic rod, a medicament frame is arranged below the outer side of the installation block, the top end of the inner side, the upper surface of handling the pond has seted up the access hole, and the spout has all been seted up to the inside wall of access hole, the inboard of spout is provided with the slider, and the one end of slider is provided with the access cover, the inboard bottom of computer lab is provided with dry chamber, and the upper surface in dry chamber has seted up the material changing mouth, the lateral wall of material changing mouth is provided with the connecting axle, and the lateral wall of connecting axle is provided with the top cap.

Preferably, the mounting groove is connected with the filter screen in a clamping manner, and the outer diameter of the filter screen is the same as the inner diameter of the water inlet.

Preferably, the threaded hole is in threaded connection with the threaded rod, and the threaded rod is symmetrically arranged on the central axis of the connecting block.

Preferably, the anthracite filter plates are distributed on the inner side of the regulating tank at equal intervals, and the width of the outer side of each anthracite filter plate is the same as that of the inner side of the regulating tank.

Preferably, the activated carbon adsorption layer is arranged at equal intervals on the inner side of the sedimentation tank, and the width of the outer side of the activated carbon adsorption layer is the same as that of the inner side of the sedimentation tank.

Preferably, the sealing block is rotatably connected with the rotating handle through a rotating shaft, and the outer diameter of the sealing block is the same as the inner diameter of the sampling tube.

Preferably, the medicament frame, the hydraulic cylinder and the hydraulic rod form a lifting structure, and the hydraulic cylinder and the hydraulic rod are vertically distributed.

Preferably, the surface of the mounting block and the surface of the medicine frame are both in open-hole design, and the size of the medicine frame is smaller than that of the connecting port.

Preferably, the outside of climbing ladder closely laminates with the inboard of anti-skidding net, and the external diameter of anti-skidding net is greater than the internal diameter of climbing ladder.

Preferably, the top cover is rotatably connected with the drying cavity through a connecting shaft, and the width of the outer side of the top cover is smaller than the width of the inner side of the material changing port.

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

1. the water inlet can be preliminarily filtered through the water inlet, the mounting groove and the filter screen, so that the water inlet is prevented from being blocked due to the fact that large sundries are accumulated on the water inlet, the working efficiency of the device is reduced, meanwhile, the filter screen is convenient to clean regularly through the clamping connection of the mounting groove and the filter screen, or the filter screen is replaced, and the practicability of the device is improved;

2. according to the invention, through the connecting port, the threaded hole, the threaded rod, the rubber protective cover and the anthracite filter plate, oil contamination doped in sewage in the adjusting tank can be adsorbed and filtered, so that the filtering efficiency of the device is improved, the oil contamination is prevented from entering the next treatment tank along with the sewage, meanwhile, the anthracite filter plate is convenient to replace and clean, the use cost is reduced, and the practicability of the device is improved;

3. according to the invention, granular impurities doped in sewage in the sedimentation tank can be adsorbed and filtered through the sedimentation tank and the activated carbon adsorption layer, so that the filtering efficiency of the device is improved, and meanwhile, the activated carbon adsorption layer has a good environment-friendly effect, so that the environment-friendly efficiency of the device is improved, and the practicability of the device is improved;

4. according to the invention, through the hydraulic cylinder, the hydraulic rod, the mounting block and the medicament frame, medicament disinfection can be carried out on sewage in the disinfection tank, so that the phenomenon that the medicine dregs after medicament mixing fall into the disinfection tank is avoided, meanwhile, workers can conveniently clean and replace the medicament frame, the workers can conveniently mount and dismount the medicament frame, and the practicability of the device is improved.

5. According to the invention, through the drying cavity, the material changing port, the connecting shaft and the top cover, a good drying effect can be achieved on the lower part of the inner side of the machine room, the situations of short circuit, rusting and the like of mechanical parts and electronic elements caused by poor drying effect are avoided, the maintenance cost is reduced, and the service lives of the mechanical parts and the electronic parts in the machine room are prolonged.

Drawings

FIG. 1 is a schematic side view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic top view of a drying chamber according to the present invention;

FIG. 4 is a schematic view of a seal block connection structure according to the present invention;

FIG. 5 is a schematic view of a filter net connection structure according to the present invention;

FIG. 6 is an enlarged view of the portion A of FIG. 1 according to the present invention.

In the figure: 1. a treatment tank; 2. a water inlet; 3. mounting grooves; 4. a filter screen; 5. a machine room; 6. a regulating tank; 7. connecting blocks; 8. a threaded hole; 9. a threaded rod; 10. a rubber protective cover; 11. anthracite filter plates; 12. a first water pump; 13. a first water pipe; 14. a sedimentation tank; 15. an activated carbon adsorption layer; 16. a second water pump; 17. a second water pipe; 18. a dredge pump; 19. a mud suction pipe; 20. a disinfection tank; 21. a third water pump; 22. a third water pipe; 23. a sampling tube; 24. a sealing block; 25. a rotating shaft; 26. turning a handle; 27. a hydraulic cylinder; 28. a hydraulic lever; 29. mounting blocks; 30. a medicament frame; 31. climbing a ladder; 32. an anti-slip net; 33. a connecting port; 34. an access hole; 35. a chute; 36. a slider; 37. an access cover; 38. a drying chamber; 39. a material changing port; 40. a connecting shaft; 41. and a top cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an environment-friendly domestic sewage purification pretreatment tank comprises a treatment tank 1, wherein a water inlet 2 is arranged on the outer side wall of the treatment tank 1, an installation groove 3 is formed in the inner side of the water inlet 2, the installation groove 3 and a filter screen 4 are installed in a matched mode, a machine room 5 is arranged on the inner side of the treatment tank 1, an adjusting tank 6 is arranged below the inner storage of the treatment tank 1, connecting blocks 7 are arranged on the inner side walls of the adjusting tank 6, threaded holes 8 are formed in the outer side walls of the connecting blocks 7, the threaded holes 8 and threaded rods 9 are installed in a matched mode, a rubber protective cover 10 is arranged on the outer side of the connecting blocks 7, anthracite filter plates 11 are arranged on the outer side walls of the connecting blocks 7, a first water pump 12 is arranged above the inner side of the machine room 5, a first water pipe 13 is arranged on the outer side wall of the first water pump 12, a second water pump 16 is arranged above the inner side of the machine room 5, a second water pipe 17 is arranged on the outer side wall of the second water pump 16, a dredge pump 18 is arranged below the inner side of the machine room 5, a dredge pipe 19 is arranged on the outer side wall of the dredge pump 18, a disinfection pond 20 is arranged on one side of the sedimentation pond 14, a third water pump 21 is arranged below the inner side of the machine room 5, a third water pipe 22 is arranged on the outer side wall of the third water pump 21, a sampling pipe 23 is arranged on the outer side wall of the disinfection pond 20, a sealing block 24 is arranged on the inner side of the sampling pipe 23, a rotating shaft 25 is arranged on the outer side of the sampling pipe 23, a rotating handle 26 is arranged in front of the outer side of the rotating shaft 25, a hydraulic cylinder 27 is arranged at the top end of the inner side of the machine room 5, a hydraulic rod 28 is arranged below the outer side of the hydraulic cylinder 27, an installation block 29 is arranged below the outer side of the hydraulic, and climbing ladder 31's the outside all is provided with anti-skidding net 32, connector 33 has been seted up on the top of disinfection pond 20, handle the upper surface in pond 1 and seted up access hole 34, and spout 35 has all been seted up to access hole 34's inside wall, the inboard of spout 35 is provided with slider 36, and slider 36's one end is provided with access cover 37, the inboard bottom of computer lab 5 is provided with dry chamber 38, and dry chamber 38's upper surface has seted up material changing port 39, material changing port 39's lateral wall is provided with connecting axle 40, and the lateral wall of connecting axle 40 is provided with top cap 41.

Further, mounting groove 3 is connected with 4 blocks of filter screen, and the external diameter of filter screen 4 is the same with the internal diameter of water inlet 2, mounting groove 3 and filter screen 4, can carry out prefilter to water inlet 2, avoided great debris to pile up at water inlet 2, cause water inlet 2 to block up, thereby the device's work efficiency has been reduced, be connected with filter screen 4's block through mounting groove 3 simultaneously, be convenient for regularly clear up filter screen 4, also perhaps change filter screen 4, the device's practicality has been improved.

Further,

screw hole

8 and 9 threaded connection of threaded rod, and threaded rod 9 sets up with the axis symmetry of connecting block 7, screw hole 8, threaded rod 9, rubber protection casing 10, thereby be convenient for change and clear up anthracite filter plate 11, use cost is reduced, simultaneously through rubber protection casing 10, can play the protecting effect to screw hole 8 and threaded rod 9 in the connecting block 7 outside, avoided invading the bubble in sewage for a long time, lead to threaded rod 9 to damage and be difficult for dismantling anthracite filter plate 11.

Further, anthracite filter plate 11 is equidistant distribution in equalizing basin 6's inboard, and the outside width of anthracite filter plate 11 is the same with equalizing basin 6's inboard width, through anthracite filter plate 11, can adsorb the filtration to the greasy dirt of participating in the inside sewage of equalizing basin 6 to improve the device's filtration efficiency, avoided the greasy dirt to get into next treatment tank along with sewage.

Further, activated carbon adsorption layer 15 is equidistant setting in sedimentation tank 14's inboard, and activated carbon adsorption layer 15's outside width is the same with sedimentation tank 14's inboard width, and sedimentation tank 14 and activated carbon adsorption layer 15 can adsorb the filtration to the graininess impurity of the 14 sewage of sedimentation tank adulteration to the filtration efficiency of the device has been improved, and activated carbon adsorption layer 15 has fine environmental protection effect simultaneously, thereby has improved the device's environmental protection efficiency.

Further, sealed piece 24 is through pivot 25 and commentaries on classics 26 swivelling joint, and the external diameter of sealed piece 24 is the same with the internal diameter of sampling tube 23, when needs carry out the sample detection to the inside water of disinfection pond 20, through changeing 26 and pivot 25 with sealed piece 24 swivelling joint to suitable position, take a sample to the water sample.

Further, medicament frame 30, pneumatic cylinder 27 and hydraulic stem 28 constitute elevation structure, and pneumatic cylinder 27 and hydraulic stem 28 are the vertical distribution, through pneumatic cylinder 27, hydraulic stem 28, medicament frame 30, can carry out the medicament disinfection to the sewage in disinfection pond 20 to also avoided the medicine dregs of a decoction after the medicament mixes to fall to the inside in disinfection pond 20, also made things convenient for the staff to clear up and trade the medicament to medicament frame 30 simultaneously.

Furthermore, the surface of the mounting block 29 and the surface of the medicine frame 30 are both in open-hole design, the size of the medicine frame 30 is smaller than that of the connecting port 33, and the surface of the mounting block 29 and the surface of the medicine frame 30 are both in open-hole design, so that the medicine frame 30 can be conveniently mounted and dismounted by workers, and the practicability of the device is improved.

Further, the outside of climbing ladder 31 and the inboard of anti-skidding net 32 closely laminate, and the external diameter of anti-skidding net 32 is greater than the internal diameter of climbing ladder 31, all is provided with anti-skidding net 32 through the outside of climbing ladder 31 to can play fine anti-skidding effect to climbing ladder 31, security when having improved maintainer and having maintained has reduced the incidence of industrial injury accident.

Further, the top cover 41 is rotatably connected with the drying cavity 38 through the connecting shaft 40, the width of the outer side of the top cover 41 is smaller than the width of the inner side of the material changing port 39, and good drying effect can be achieved on the lower portion of the inner side of the machine room 5 through the drying cavity 38, the material changing port 39, the connecting shaft 40 and the top cover 41, so that the situations that mechanical parts and electronic elements are short-circuited and rusted and the like are avoided, the maintenance cost is reduced, and the service lives of the mechanical parts and the electronic parts of the machine room 5 are prolonged.

The working principle is as follows: for the domestic sewage environment-friendly purification pretreatment tank, firstly, the device is moved to a designated position, then, a water inlet 2 of the device is fixedly installed with an adjacent device, then, whether all parts are installed or not is checked, then, the water inlet 2 can be preliminarily filtered through a mounting groove 3 and a filter screen 4 which are arranged on the inner side of the water inlet 2, the phenomenon that large sundries are accumulated on the water inlet 2 to cause the water inlet 2 to be blocked is avoided, so that the working efficiency of the device is reduced, meanwhile, the filter screen 4 is convenient to be cleaned regularly or replaced through the clamping connection of the mounting groove 3 and the filter screen 4, the practicability of the device is improved, secondly, sewage is sent into an adjusting tank 6 through the water inlet 2, and oil contamination in the sewage in the adjusting tank 6 can be adsorbed and filtered through an anthracite filter plate 11 which is arranged in the adjusting tank 6, thereby improving the filtering efficiency of the device, avoiding oil stains from entering the next treatment tank along with sewage, and then being convenient for replacing and cleaning the anthracite filter plate 11 through the connecting block 7, the threaded hole 8, the threaded rod 9 and the rubber protective cover 10 which are arranged at the inner side of the adjusting tank 6, reducing the use cost, simultaneously playing a protective effect on the threaded hole 8 and the threaded rod 9 at the outer side of the connecting block 7 through the rubber protective cover 10, avoiding the situation that the threaded rod 9 is damaged and is difficult to disassemble the anthracite filter plate 11 due to long-term invasion in the sewage, switching on an external power supply, turning on a switch of the first water pump 12, starting to operate the first water pump 12 at the moment, sending the sewage in the adjusting tank 6 into the interior of the sedimentation tank 14 through the first water pump 12 and the first water pipe 13, and then adsorbing and filtering the partical impurities mixed in the sewage in the sedimentation tank 14 through the activated carbon adsorption layer 15 which is arranged in the sedimentation tank 14, thereby improving the filtration efficiency of the device, meanwhile, the activated carbon adsorption layer 15 has good environmental protection effect, thereby improving the environmental protection efficiency of the device, switching on an external power supply, turning on the switch of the second water pump 16, at the moment, the second water pump 16 starts to operate, sending the adsorbed sewage into the disinfection tank 20 through the second water pump 16 and the second water pipe 17, switching on the external power supply, turning on the switch of the hydraulic cylinder 27, at the moment, the hydraulic cylinder 27 starts to operate, driving the hydraulic rod 28, the mounting block 29 and the medicament frame 30 to go up and down through the hydraulic cylinder 27, carrying out medicament disinfection on the sewage in the disinfection tank 20 through the medicament frame 30, thereby also preventing the dregs after the medicaments are mixed from falling into the disinfection tank 20, simultaneously, facilitating the workers to clean and change the medicament for the medicament frame 30, and when the medicament frame 30 needs to be changed or added with the medicaments, the medicine frame 30 is lifted to the inside of the disinfection tank 20 through the connecting port 33, so that the medicine frame 30 is conveniently installed and disassembled through the open-hole design of the surface of the installation block 29 and the surface of the medicine frame 30, an external power supply is switched on, the switch of the mud pump 18 is turned on, the mud pump 18 starts to operate at the moment, the mud in the sedimentation tank 14 is sent out through the mud pump 18 and the mud pipe 19, and then the drying cavity 38, the material changing port 39, the connecting shaft 40 and the top cover 41 which are arranged on the lower portion of the inner side of the machine room 5 can play a good drying effect on the lower portion of the inner side of the machine room 5, thereby avoiding the occurrence of short circuit, rusting and the like of mechanical parts and electronic elements due to poor drying effect, reducing the maintenance cost, prolonging the service lives of the mechanical parts and electronic parts in the machine room 5, and simultaneously facilitating the replacement of the drying agent in the drying cavity 38, when the water sample in the disinfection tank 20 needs to be sampled and detected, the sealing block 24 is adjusted to a proper position by screwing the rotating handle 26 and the rotating shaft 25 on the outer side of the sampling pipe 23, the water sample is sampled, so that the water sample can be conveniently sampled by workers, after the sampling detection result reaches an index, an external power supply is switched on, a switch of the third water pump 21 is turned on, the third water pump 21 starts to run at the moment, a water source up to the standard is sent out through the third water pump 21 and the third water pipe 22, and when the device in the machine room 5 needs to be maintained, a maintainer firstly slides and adjusts to a specified position through the access cover 37 on the outer side of the access hole 34 and the sliding block 35, then enters the machine room 5 through the climbing ladder 31, the anti-slip net 32 is arranged on the outer side of the climbing ladder 31, so that the climbing ladder 31 has a good anti-slip effect, and the safety of the maintainer during maintenance is improved, the incidence of industrial accidents is reduced, and the domestic sewage environment-friendly purification pretreatment tank is used, wherein the model of the first water pump 12 is PW-175EAH, the model of the hydraulic cylinder 27 is CDM2B25, and the model of the suction dredge pump 18 is 80 NS-I-A33.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a domestic sewage environmental protection purification preliminary treatment pond, includes treatment tank (1), its characterized in that: the outer side wall of the treatment tank (1) is provided with a water inlet (2), the inner side of the water inlet (2) is provided with a mounting groove (3), the mounting groove (3) is matched with a filter screen (4) for installation, the inner side of the treatment tank (1) is provided with a machine room (5), a regulating tank (6) is arranged below a memory of the treatment tank (1), the inner side wall of the regulating tank (6) is provided with a connecting block (7), the outer side wall of the connecting block (7) is provided with a threaded hole (8), the threaded hole (8) is matched with a threaded rod (9) for installation, the outer side of the connecting block (7) is provided with a rubber protective cover (10), the outer side wall of the connecting block (7) is provided with a anthracite filter plate (11), a first water pump (12) is arranged above the inner side wall of the machine room (5), and the outer side, a sedimentation tank (14) is arranged on one side of the adjusting tank (6), an activated carbon adsorption layer (15) is arranged on the inner side of the sedimentation tank (14), a second water pump (16) is arranged above the inner side of the machine room (5), a second water pipe (17) is arranged on the outer side wall of the second water pump (16), a sludge suction pump (18) is arranged below the inner side of the machine room (5), a sludge suction pipe (19) is arranged on the outer side wall of the sludge suction pump (18), a disinfection tank (20) is arranged on one side of the sedimentation tank (14), a third water pump (21) is arranged below the inner side of the machine room (5), a third water pipe (22) is arranged on the outer side wall of the third water pump (21), a sampling pipe (23) is arranged on the outer side wall of the disinfection tank (20), a sealing block (24) is arranged on the inner side of the sampling pipe (23), a rotating shaft (25) is arranged on the outer side of the sampling, a rotating handle (26) is arranged in front of the outer side of the rotating shaft (25), a hydraulic cylinder (27) is arranged at the top end of the inner side of the machine room (5), a hydraulic rod (28) is arranged below the outer side of the hydraulic cylinder (27), an installation block (29) is arranged below the outer side of the hydraulic rod (28), a medicament frame (30) is arranged below the outer side of the installation block (29), a climbing ladder (31) is arranged at the top end of the inner side of the machine room (5), anti-skidding nets (32) are arranged on the outer sides of the climbing ladder (31), a connecting port (33) is arranged at the top end of the disinfection tank (20), an access hole (34) is formed in the upper surface of the treatment tank (1), sliding grooves (35) are formed in the inner side walls of the access hole (34), sliding blocks (36) are arranged on the inner side of the sliding grooves (35), an access cover (37) is arranged at one end of the sliding blocks (36, and the upper surface of drying chamber (38) has seted up material changing mouth (39), the lateral wall of material changing mouth (39) is provided with connecting axle (40), and the lateral wall of connecting axle (40) is provided with top cap (41).

2. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the mounting groove (3) is connected with the filter screen (4) in a clamping mode, and the outer diameter of the filter screen (4) is the same as the inner diameter of the water inlet (2).

3. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the threaded hole (8) is in threaded connection with the threaded rod (9), and the threaded rod (9) is symmetrically arranged on the central axis of the connecting block (7).

4. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the anthracite filter plates (11) are distributed on the inner side of the regulating tank (6) at equal intervals, and the width of the outer side of each anthracite filter plate (11) is the same as that of the inner side of the regulating tank (6).

5. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the activated carbon adsorption layer (15) is arranged on the inner side of the sedimentation tank (14) at equal intervals, and the width of the outer side of the activated carbon adsorption layer (15) is the same as that of the inner side of the sedimentation tank (14).

6. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the sealing block (24) is rotatably connected with the rotating handle (26) through a rotating shaft (25), and the outer diameter of the sealing block (24) is the same as the inner diameter of the sampling tube (23).

7. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the medicament frame (30), the hydraulic cylinder (27) and the hydraulic rod (28) form a lifting structure, and the hydraulic cylinder (27) and the hydraulic rod (28) are vertically distributed.

8. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the surface of the mounting block (29) and the surface of the medicament frame (30) are both in open hole type design, and the size of the medicament frame (30) is smaller than that of the connecting port (33).

9. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the outer side of the climbing ladder (31) is tightly attached to the inner side of the anti-slip net (32), and the outer diameter of the anti-slip net (32) is larger than the inner diameter of the climbing ladder (31).

10. The domestic sewage environmental protection purification pretreatment tank of claim 1, characterized in that: the top cover (41) is rotatably connected with the drying cavity (38) through a connecting shaft (40), and the width of the outer side of the top cover (41) is smaller than the width of the inner side of the material changing port (39).