Sewage treatment device for water conservancy construction

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment device for water conservancy construction, a conveying mechanism driven by a motor is arranged in a sewage conveying box, the conveying mechanism is used for conveying sewage into a chemical adding channel in a treatment tank, and when the sewage is conveyed upwards along the sewage conveying box, the chemical adding channel is communicated with the sewage conveying box; impurities in the sewage can be retained in a retention mechanism at the lower end of the sewage conveying box under the action of gravity; the motor drives the middle rotating shaft and the spiral blade to rotate through the driving mechanism at the front end of the treatment tank, the middle rotating shaft drives the middle filtering roller and the impeller to rotate, and impurities in sewage can be retained in the retention mechanism at the lower end of the sewage conveying box under the action of gravity, so that the impurities in the sewage can be removed in the sewage conveying process; the impeller rotates to mix the sewage and the medicine and then convey the sewage and the medicine into the middle filtering roller, and the sewage and the medicine are stirred and mixed again when the middle rotating shaft, the spiral blade and the middle filtering roller rotate at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device for water conservancy buildings. Background Art

[0002] The sewage treatment technology in water conservancy construction mainly includes physical treatment, chemical treatment and biological treatment. In the process of water conservancy project construction, earth excavation, concrete construction, building materials stacking and transportation will generate a large amount of sewage. These engineering construction sewage may contain suspended matter, sediment, concrete slurry, chemical additives and other harmful substances. In the process of water conservancy construction sewage treatment, adding drugs (flocculants, coagulants, conditioners, pH regulators, disinfectants, etc.) is a crucial link. By rationally selecting and using different types of agents, various pollutants in sewage can be effectively removed, water quality can be improved, and the environment and human health can be protected. However, before and after the addition of drugs, the sewage needs to be treated with impurities. The existing treatment device uses additional impurity removal equipment to perform impurity removal operations independently before and after the addition of drugs. The equipment investment cost is large, and the whole process of impurity removal and drug addition is cumbersome. After the addition of drugs, once the agent is mixed with the sewage, the effect is not good, the agent has limited effect, and it will also lead to inadequate sewage treatment. For this reason, we have introduced a sewage treatment device for water conservancy construction. Summary of the invention

[0003] The purpose of the present invention is to provide a sewage treatment device for water conservancy construction to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A sewage treatment device for water conservancy construction comprises a treatment tank, a sewage conveying box is arranged at the front side of the treatment tank, a conveying mechanism driven by a motor is arranged inside the sewage conveying box, the conveying mechanism is used to convey sewage to a dosing channel inside the treatment tank, and a dosing hopper is arranged at the upper end of the front of the treatment tank for adding medicine into the dosing channel;

[0006] When the sewage is transported upward along the sewage transport box, the debris in the sewage will be retained in the retention mechanism at the lower end of the sewage transport box under the action of gravity;

[0007] The rear end of the treatment tank is provided with a receiving cavity for receiving the intermediate filter drum, and the intermediate filter drum is provided with a mechanical stirring mechanism, which includes an intermediate rotating shaft with a stirring rod and a spiral blade located outside the intermediate rotating shaft, and the rear end of the intermediate rotating shaft is fixed to the inner wall of the rear end of the middle part of the intermediate filter drum, and an impeller located in the dosing channel is fixed on the intermediate rotating shaft;

[0008] The motor drives the intermediate rotating shaft and the spiral blade to rotate through the driving mechanism at the front end of the treatment tank, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When the sewage and the medicine enter the dosing channel, the impeller rotates to mix the sewage and the medicine and then transports them to the intermediate filter drum, and then transports the sewage to the intermediate filter drum. The sewage enters the accommodating chamber after being filtered by the intermediate filter drum;

[0009] An aeration mechanism is installed at the front end of the treatment tank, and the intermediate rotating shaft also drives the fan blades in the aeration mechanism to rotate, introducing part of the air into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodating cavity through the air guide pipe to realize the aeration operation of the sewage.

[0010] Preferably, the retention mechanism includes an arc-shaped retention box fixed to the lower end of the sewage transport box and an impurity temporary storage box fixed on the inner wall of the arc-shaped retention box, an impurity entry port is provided on the upper right side of the impurity temporary storage box, and a protective door located below the impurity temporary storage box is detachably installed at the bottom of the arc-shaped retention box.

[0011] Preferably, the motor is fixed to the upper side of the sewage transport box;

[0012] The conveying mechanism includes a driving roller and a driven roller installed at both ends of the sewage conveying box, a conveying belt connected between the driving roller and the driven roller, two rows of L-shaped scrapers arranged on the outer wall of the conveying belt, a supporting wheel installed at the connection between the arc retention box and the sewage conveying box through a bracket, and a tensioning roller movably connected to the inside of the arc retention box;

[0013] The output end of the motor is connected to the driving roller, the supporting wheel is supported at the middle position of the outer side wall of the conveyor belt, and the tensioning roller is supported on the lower inner wall of the conveyor belt.

[0014] Preferably, the inner diameter of the accommodating cavity is larger than the inner diameter of the dosing channel, and an annular groove for inserting the front end of the middle filter drum is provided at the front end of the accommodating cavity.

[0015] Preferably, filter holes are evenly distributed on the surface of the intermediate filter drum.

[0016] Preferably, an annular disk is provided at the inner rear end of the intermediate filter drum, a side rotating shaft is fixed through the middle of the spiral blade, and the rear end of the side rotating shaft is inserted into the corresponding shaft hole on the annular disk;

[0017] The rear end of the intermediate rotating shaft extends out through the middle hole in the middle of the annular disk and is then fixed on the rear end inner wall of the intermediate filtering drum.

[0018] Preferably, the stirring rod on the intermediate rotating shaft is located in the intermediate filter drum, and a first spray hole communicating with the inner cavity inside the intermediate rotating shaft is provided on the surface of the intermediate rotating shaft;

[0019] The driving mechanism includes an intermediate gear and a first pulley, the front end of the intermediate rotating shaft extending through the processing tank and then being fixedly connected, and a side gear, the front end of the side rotating shaft extending through the processing tank and then being fixed;

[0020] The side gear is meshed with the side of the middle gear, the front end of the active roller is fixed with a connecting shaft, the front end of the connecting shaft extends out of the sewage conveying box and is fixedly connected to a second pulley, and a belt is connected between the first pulley and the second pulley.

[0021] Preferably, the aeration mechanism comprises a gas collecting cylinder fixed at the front end of the treatment tank, the gas collecting cylinder has two cavities distributed front and back formed by a middle partition, the front end of the middle rotating shaft passes through the middle partition and is connected to a gas collecting trumpet, and the rear end of the gas collecting trumpet is connected to the inner cavity inside the middle rotating shaft through an opening at the front end of the middle rotating shaft;

[0022] A connecting frame is installed on the inner wall of the air collecting bell tube, and the front end of the connecting frame is fixed to the middle part of the rear end of the fan blade;

[0023] The front end of the air duct is fixed to the middle partition, and the horn air inlet on the middle partition is connected to the air duct. The rear end of the air duct extends into the inner wall of the accommodating cavity, and a second spray hole is provided on the part of the air duct surface protruding from the inner wall of the accommodating cavity.

[0024] Preferably, a protective net is provided at the front end of the gas collecting cylinder, and a slot for extending a belt is provided at the side of the gas collecting cylinder.

[0025] Compared with the prior art, the invention has the following beneficial effects: the motor of the invention drives the conveying mechanism to convey the sewage upward along the sewage conveying box. During the process, the impurities in the sewage will be retained in the retention mechanism at the lower end of the sewage conveying box under the action of gravity, so that the impurities in the sewage can be removed during the sewage conveying process of the water conservancy building; the motor drives the intermediate rotating shaft and the spiral blades to rotate through the driving mechanism, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When the sewage and the medicine enter the dosing channel, the impeller rotates to mix the sewage and the medicine and then convey them to the intermediate filter drum, and then conveys the sewage to the intermediate filter drum; the intermediate rotating shaft, the spiral blades and the intermediate filter drum rotate at the same time to achieve the re-stirring and mixing of the sewage and the medicine generated by the water conservancy building; the intermediate rotating shaft also drives the fan blades in the aeration mechanism to rotate, and introduces part of the air into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodating cavity through the air guide pipe, so as to realize the aeration operation of the sewage, promote the growth and activity of aerobic microorganisms, thereby accelerating the oxidation and decomposition of organic pollutants and pollutants such as ammonia nitrogen in the sewage of the water conservancy building, and achieve the purpose of purifying water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the exploded structure of the overall assembly of the present invention;

[0027] Figure 2 It is a schematic diagram of the exploded structure of the aeration mechanism of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection between the intermediate shaft, the impeller, the intermediate gear, the air collecting bell pipe and the fan blades of the present invention;

[0029] Figure 4 It is a schematic diagram of the exploded structure of the connection between the mechanical stirring mechanism and the annular disk of the present invention;

[0030] Figure 5 It is a schematic diagram of a three-dimensional structure of the air collecting trumpet pipe, fan blades, driving mechanism, impeller, mechanical stirring mechanism and annular disk connected to each other in the present invention;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure after the gas collecting cylinder and the gas guide pipe of the present invention are disassembled;

[0032] Figure 7 It is a cross-sectional structural schematic diagram of the connection between the sewage conveying box, the conveying mechanism and the retention mechanism of the present invention;

[0033] Figure 8 It is a schematic diagram of a partial three-dimensional structure of the L-shaped scraper blade connected to the conveyor belt of the present invention;

[0034] Fig. 9 It is a schematic cross-sectional view of the treatment tank, air guide pipe, intermediate filter drum, spiral blades and intermediate rotating shaft of the present invention;

[0035] Fig.10 It is a cross-sectional structural schematic diagram of the connection between the treatment tank, the liquid discharge pipe and the gas collecting cylinder of the present invention;

[0036] Fig.11 It is a cross-sectional structural schematic diagram of the connection of the treatment tank, the liquid discharge pipe, the driving mechanism, the aeration mechanism and the mechanical stirring mechanism of the present invention.

[0037] In the figure: 1, treatment tank; 1001, dosing hopper; 1002, annular groove; 1003, dosing channel; 1004, accommodating chamber; 2, drainage pipe; 3, driving mechanism; 31, intermediate gear; 32, first pulley; 33, side gear; 34, belt; 4, aeration mechanism; 41, gas collecting cylinder; 42, cavity; 43, slot; 44, air guide pipe; 441, trumpet air inlet; 45, second spray hole; 46, gas collecting trumpet pipe; 47, connecting frame; 48, fan blade; 49, protective net; 5, mechanical stirring mechanism; 51, middle Rotating shaft; 52, first spray hole; 53, stirring rod; 54, opening; 55, spiral blade; 56, side rotating shaft; 6, impeller; 7, annular disk; 71, middle hole; 8, middle filter drum; 81, filter hole; 9, sewage conveying box; 91, motor; 92, second pulley; 93, active roller; 94, arc retention box; 95, protective door; 96, impurity temporary storage box; 97, impurity inlet; 98, bracket; 99, support wheel; 100, tensioning roller; 101, conveyor belt; 102, driven roller; 103, L-shaped scraper. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example:

[0040] See also Figure 1-11 , the present invention provides a technical solution:

[0041] A sewage treatment device for water conservancy construction comprises a treatment tank 1. A sewage conveying box 9 is provided at the front side of the treatment tank 1. A drainage pipe 2 communicating with a receiving chamber 1004 is provided at the rear bottom of the treatment tank 1.

[0042] The sewage conveying box 9 is provided with a conveying mechanism driven by a motor 91, and the motor 91 is fixed to the upper side of the sewage conveying box 9;

[0043] The conveying mechanism includes an active roller 93 and a driven roller 102 installed at both ends of the sewage conveying box 9, a conveying belt 101 connected between the active roller 93 and the driven roller 102, two rows of L-shaped scrapers 103 arranged on the outer wall of the conveying belt 101, a support wheel 99 installed at the connection between the arc retention box 94 and the sewage conveying box 9 through a bracket 98, and a tensioning roller 100 movably connected to the inside of the arc retention box 94;

[0044] The output end of the motor 91 is connected to the driving roller 93 , the supporting wheel 99 is supported at the middle position of the outer side wall of the conveyor belt 101 , and the tensioning roller 100 is supported on the lower inner wall of the conveyor belt 101 .

[0045] The tensioning roller 100 is used to tension the conveyor belt 101 and also allows the conveyor belt 101 to pass through the arc-shaped retention box 94. When the conveyor belt 101 rotates, the L-shaped scraper 103 on the conveyor belt 101 can introduce sewage into the arc-shaped retention box 94.

[0046] The conveying mechanism is used to convey sewage to the dosing channel 1003 inside the treatment tank 1, and a dosing hopper 1001 for adding drugs into the dosing channel 1003 is provided at the front upper end of the treatment tank 1;

[0047] When the sewage is transported upward along the sewage transport box 9, the debris in the sewage will be retained in the retention mechanism at the lower end of the sewage transport box 9 under the action of gravity;

[0048] The retention mechanism includes an arc-shaped retention box 94 fixed to the lower end of the sewage transport box 9 and an impurity temporary storage box 96 fixed on the inner wall of the arc-shaped retention box 94. An impurity inlet 97 is provided on the upper right side of the impurity temporary storage box 96. A protective door 95 located below the impurity temporary storage box 96 is detachably installed at the bottom of the arc-shaped retention box 94.

[0049] like Figure 7 As shown, the motor 91 drives the active roller 93 to rotate, so that the conveyor belt 101 connected between the active roller 93 and the driven roller 102 rotates synchronously, so that the sewage at the bottom of the sewage conveying box 9 can enter the sewage conveying box 9 under the action of the L-shaped scraper 103 made of rubber material on the conveyor belt 101;

[0050] After the sewage enters the arc retention box 94, the impurities mixed in the sewage will move downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97. When the equipment is shut down or running, the protective door 95 is opened to take out the impurities in the impurity temporary storage box 96.

[0051] Since the conveyor belt 101 passes through the arc retention box 94, when the conveyor belt 101 rotates, the L-shaped scraper 103 on the conveyor belt 101 introduces the sewage into the arc retention box 94, and makes the sewage go upward along the arc retention box 94 and finally enter the dosing channel 1003;

[0052] When sewage is introduced into the arc retention box 94, due to the setting of the impurity temporary storage box 96, the water flow velocity at the impurity inlet 97 on the upper right side of the impurity temporary storage box 96 is relatively small. Therefore, the water flow at the impurity inlet 97 will not carry the impurities upward into the dosing channel 1003, so that the impurities mixed in the sewage will flow downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97;

[0053] And because the water flow rate at the impurity inlet 97 is relatively small, after the protective door 95 is opened, a small amount of sewage will enter the impurity temporary storage box 96 to flush out the debris in the impurity temporary storage box 96, and sewage will not enter the impurity temporary storage box 96 in large quantities, causing the protective door 95 to be unable to close.

[0054] A receiving cavity 1004 for receiving the intermediate filter drum 8 is provided inside the rear end of the processing tank 1 , and filter holes 81 are evenly distributed on the surface of the intermediate filter drum 8 .

[0055] The inner diameter of the accommodating cavity 1004 is larger than the inner diameter of the dosing channel 1003 , and an annular groove 1002 for inserting the front end of the intermediate filter drum 8 is provided at the front end of the accommodating cavity 1004 .

[0056] A mechanical stirring mechanism 5 is provided inside the intermediate filter drum 8. The mechanical stirring mechanism 5 includes an intermediate rotating shaft 51 with a stirring rod 53 and a spiral blade 55 located outside the intermediate rotating shaft 51. The rear end of the intermediate rotating shaft 51 is fixed to the inner wall of the rear end of the middle part of the intermediate filter drum 8.

[0057] An annular disk 7 is provided at the inner rear end of the intermediate filter drum 8, and a side rotating shaft 56 is fixed through the middle of the spiral blade 55, and the rear end of the side rotating shaft 56 is inserted into the corresponding shaft hole on the annular disk 7; the rear end of the intermediate rotating shaft 51 extends out through the middle hole 71 in the middle of the annular disk 7 and is fixed to the inner wall of the rear end of the intermediate filter drum 8.

[0058] In this way, when the middle gear 31 drives the side gear 33 to rotate, so that the middle rotating shaft 51 drives the middle filter drum 8 to rotate, the side rotating shaft 56 also drives the spiral blade 55 to rotate inside the middle filter drum 8. At this time, the annular disk 7 rotates inside the middle filter drum 8 relative to the middle filter drum 8. The setting of the annular disk 7 plays a supporting role for the side rotating shaft 56, thereby making the spiral blade 55 rotate smoothly.

[0059] The impeller 6 located in the dosing channel 1003 is fixed on the intermediate rotating shaft 51;

[0060] The motor 91 drives the intermediate rotating shaft 51 and the spiral blade 55 to rotate through the driving mechanism 3 at the front end of the treatment tank 1, and the intermediate rotating shaft 51 drives the intermediate filter drum 8 and the impeller 6 to rotate. When the sewage and the medicine enter the dosing channel 1003, the impeller 6 rotates to mix the sewage and the medicine and then transports them to the intermediate filter drum 8, and then transports the sewage to the intermediate filter drum 8. The sewage is filtered by the intermediate filter drum 8 and enters the accommodating chamber 1004.

[0061] An aeration mechanism 4 is installed at the front end of the treatment tank 1. The intermediate rotating shaft 51 also drives the fan blades 48 in the aeration mechanism 4 to rotate, introducing part of the air into the intermediate filter drum 8 through the inner cavity of the intermediate rotating shaft 51, and the other part of the air is introduced into the accommodating cavity 1004 through the air guide pipe 44 to realize the aeration operation of the sewage.

[0062] The stirring rod 53 on the intermediate rotating shaft 51 is located in the intermediate filter drum 8, and the surface of the intermediate rotating shaft 51 is provided with a first spray hole 52 which is connected with the inner cavity inside the intermediate rotating shaft 51;

[0063] The driving mechanism 3 includes an intermediate gear 31 and a first pulley 32, the front end of the intermediate rotating shaft 51 passes through the processing tank 1 and is fixedly connected thereto, and a side gear 33, the front end of the side rotating shaft 56 passes through the processing tank 1 and is fixed thereto;

[0064] The side gear 33 is meshed with the side of the intermediate gear 31, and the front end of the active roller 93 is fixed with a connecting shaft. The front end of the connecting shaft extends out of the sewage conveying box 9 and is fixedly connected to a second pulley 92. A belt 34 is connected between the first pulley 32 and the second pulley 92.

[0065] The motor 91 drives the driving roller 93 and the second pulley 92 to rotate, and the second pulley 92 drives the first pulley 32 to rotate through the belt 34, so that the intermediate gear 31 and the intermediate shaft 51 as well as the air collecting horn pipe 46 and the fan blade 48 fixed at the front end of the intermediate shaft 51 rotate together;

[0066] At this time, the intermediate gear 31 drives the side shaft 56 and the spiral blade 55 to rotate through the side gear 33, and the stirring rod 53 on the intermediate shaft 51 rotates in the intermediate filter drum 8, thereby achieving the re-stirring of the sewage and the medicine entering the intermediate filter drum 8;

[0067] At the same time, the rotation directions of the multiple sets of spiral blades 55 are consistent. Therefore, when the multiple sets of spiral blades 55 rotate synchronously, they can also play a role in pushing the sewage in the intermediate filter drum 8 from front to back, so that the sewage in the accommodating chamber 1004 of the treatment tank 1 forms a flow from front to back, so that after the sewage is filtered through the filter hole 81 and enters the accommodating chamber 1004, it can follow the sewage flow into the drainage pipe 2, and then be discharged from the drainage pipe 2 for subsequent further treatment of the sewage;

[0068] The aeration mechanism 4 includes a gas collecting cylinder 41 fixed at the front end of the treatment tank 1. Two cavities 42 distributed front and back are formed inside the gas collecting cylinder 41 through a middle partition. The front end of the middle rotating shaft 51 passes through the middle partition and is connected to a gas collecting bell pipe 46. The rear end of the gas collecting bell pipe 46 is connected to the inner cavity of the middle rotating shaft 51 through an opening 54 at the front end of the middle rotating shaft 51.

[0069] A connecting frame 47 is installed on the inner wall of the air collecting bell tube 46, and the front end of the connecting frame 47 is fixed to the middle of the rear end of the fan blade 48;

[0070] The front end of the air duct 44 is fixed to the middle partition, and the trumpet air inlet 441 on the middle partition is connected to the air duct 44. The rear end of the air duct 44 extends into the inner wall of the accommodating cavity 1004, and a second spray hole 45 is provided on the surface of the air duct 44 protruding from the inner wall of the accommodating cavity 1004.

[0071] A protective net 49 is also provided at the front end of the air collecting cylinder 41. The protective net 49 protects the fan blades 48 from rotating at high speed, thereby improving safety. A slot 43 for extending the belt 34 is also provided on the side of the air collecting cylinder 41.

[0072] During the rotation of the fan blade 48, a negative pressure is formed in the cavity 42 in front of the gas collecting cylinder 41, so that the outside air can enter the cavity 42 in front of the gas collecting cylinder 41 through the protective net 49, and a part of the air enters the inner cavity inside the intermediate rotating shaft 51 through the gas collecting bell tube 46 and the opening 54, and is finally ejected through the first spray hole 52, which is used to aerate the sewage in the intermediate filter drum 8 and increase the flow of the sewage in the intermediate filter drum 8, so as to achieve the stirring of the sewage and medicine in the intermediate filter drum 8;

[0073] Another part of the air enters the air duct 44 through the trumpet air inlet 441 and is finally ejected out through the second spray hole 45. It is used to aerate the sewage that is filtered through the filter hole 81 and enters the containing chamber 1004, and it can also increase the flow of the sewage in the containing chamber 1004 to achieve stirring of the sewage and medicine in the containing chamber 1004.

[0074] In this way, the sewage is aerated from the middle and the side of the middle of the treatment tank 1 at the same time, which can also improve the aeration effect.

[0075] Specifically, when in use, the bottom of the sewage conveying box 9 is extended into the sewage, and then the motor 91 is turned on to drive the active roller 93 to rotate, so that the conveyor belt 101 connected between the active roller 93 and the driven roller 102 rotates synchronously, so that the sewage at the bottom of the sewage conveying box 9 can enter the sewage conveying box 9 under the action of the L-shaped scraper 103 made of rubber material on the conveyor belt 101, and the sewage is made to go up along the arc retention box 94 and finally enter the dosing channel 1003;

[0076] When the sewage enters the arc retention box 94, the impurities mixed in the sewage will flow downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97. When the equipment is shut down or running, the protective door 95 can be opened to remove the impurities in the impurity temporary storage box 96.

[0077] Since the conveyor belt 101 passes through the arc retention box 94, when the conveyor belt 101 rotates, the L-shaped scraper 103 on the conveyor belt 101 introduces the sewage into the arc retention box 94, and makes the sewage go upward along the arc retention box 94 and finally enter the dosing channel 1003;

[0078] At the same time, the active roller 93 drives the second pulley 92 to rotate, and the second pulley 92 drives the first pulley 32 to rotate through the belt 34, so that the intermediate gear 31, the intermediate shaft 51, the impeller 6 fixed on the intermediate shaft 51, and the air collecting horn pipe 46 and the fan blades 48 fixed at the front end of the intermediate shaft 51 rotate together;

[0079] At this time, the middle gear 31 drives the side shaft 56 and the spiral blade 55 to rotate through the side gear 33, and the stirring rod 53 on the middle shaft 51 rotates in the middle filter drum 8;

[0080] When the sewage enters the dosing channel 1003, the sewage treatment drug added through the dosing bucket 1001 enters the dosing channel 1003, and the impeller 6 rotates to mix the sewage and the drug and then transports them to the middle filter drum 8, and then transports the sewage to the middle filter drum 8;

[0081] The stirring rod 53 on the intermediate rotating shaft 51 rotates in the middle of the intermediate filter drum 8, and the plurality of spiral blades 55 also rotate synchronously on the inner side of the intermediate filter drum 8, thereby stirring the sewage and the medicine in the intermediate filter drum 8;

[0082] At the same time, during the rotation of the fan blade 48, a negative pressure is formed in the cavity 42 in front of the gas collecting cylinder 41, so that the outside air can enter the cavity 42 in front of the gas collecting cylinder 41 through the protective net 49, and a part of the air is ejected through the first spray hole 52, which is used to aerate the sewage in the intermediate filter drum 8 and increase the flow of the sewage in the intermediate filter drum 8, so as to achieve the stirring of the sewage and medicine in the intermediate filter drum 8;

[0083] Another part of the air enters the air duct 44 through the trumpet air inlet 441 and is finally ejected out through the second spray hole 45. It is used to aerate the sewage that is filtered through the filter hole 81 and enters the containing chamber 1004, and it can also increase the flow of the sewage in the containing chamber 1004 to achieve stirring of the sewage and medicine in the containing chamber 1004.

[0084] The rotation of the multiple sets of spiral blades 55 can also push the sewage in the middle filter drum 8 from front to back, so that the sewage in the accommodating chamber 1004 of the treatment tank 1 forms a flow from front to back. After the sewage is filtered through the filter hole 81 and enters the accommodating chamber 1004, it can follow the sewage flow into the drain pipe 2, and then be discharged from the drain pipe 2 for further subsequent treatment of the sewage.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment device for water conservancy construction, comprising a treatment tank, characterized in that: A sewage conveying box is provided at the front side of the treatment tank, and a conveying mechanism driven by a motor is provided inside the sewage conveying box, and the conveying mechanism is used to convey sewage to the dosing channel inside the treatment tank, and a dosing hopper is provided at the upper end of the front of the treatment tank for adding medicine into the dosing channel; When the sewage is transported upward along the sewage transport box, the debris in the sewage will be retained in the retention mechanism at the lower end of the sewage transport box under the action of gravity; The rear end of the treatment tank is provided with a receiving cavity for receiving the intermediate filter drum, and the intermediate filter drum is provided with a mechanical stirring mechanism, which includes an intermediate rotating shaft with a stirring rod and a spiral blade located outside the intermediate rotating shaft, and the rear end of the intermediate rotating shaft is fixed to the inner wall of the rear end of the middle part of the intermediate filter drum, and an impeller located in the dosing channel is fixed on the intermediate rotating shaft; The motor drives the intermediate rotating shaft and the spiral blade to rotate through the driving mechanism at the front end of the treatment tank, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When sewage and drugs enter the drug adding channel, the impeller rotates to mix the sewage and drugs and then transport them to the intermediate filter drum. The sewage is filtered by the intermediate filter drum and then enters the accommodating chamber. An aeration mechanism is installed at the front end of the treatment tank, and the intermediate rotating shaft also drives the fan blades in the aeration mechanism to rotate, introducing part of the air into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodating cavity through the air guide pipe to realize the aeration operation of the sewage.

2. A sewage treatment device for water conservancy construction according to claim 1, characterized in that: The retention mechanism includes an arc-shaped retention box fixed at the lower end of the sewage transport box and an impurity temporary storage box fixed on the inner wall of the arc-shaped retention box. An impurity entry port is provided on the upper right side of the impurity temporary storage box, and a protective door located below the impurity temporary storage box is detachably installed at the bottom of the arc-shaped retention box.

3. A sewage treatment device for water conservancy construction according to claim 2, characterized in that: The motor is fixed to the upper side of the sewage conveying box; The conveying mechanism includes a driving roller and a driven roller installed at both ends of the sewage conveying box, a conveying belt connected between the driving roller and the driven roller, two rows of L-shaped scrapers arranged on the outer wall of the conveying belt, a supporting wheel installed at the connection between the arc retention box and the sewage conveying box through a bracket, and a tensioning roller movably connected to the inside of the arc retention box; The output end of the motor is connected to the driving roller, the supporting wheel is supported at the middle position of the outer side wall of the conveyor belt, and the tensioning roller is supported on the lower inner wall of the conveyor belt.

4. A sewage treatment device for water conservancy construction according to claim 1, characterized in that: The inner diameter of the accommodating cavity is larger than the inner diameter of the drug adding channel, and an annular groove for inserting the front end of the middle filter drum is provided at the front end of the accommodating cavity.

5. The sewage treatment device for water conservancy construction according to claim 1 is characterized by: The surface of the intermediate filter drum is also evenly distributed with filter holes.

6. A sewage treatment device for water conservancy construction according to claim 3, characterized in that: The inner rear end of the intermediate filter drum is provided with an annular disk, the middle of the spiral blade is penetrated and fixed with a side rotating shaft, and the rear end of the side rotating shaft is inserted into the corresponding shaft hole on the annular disk; The rear end of the intermediate rotating shaft extends out through the middle hole in the middle of the annular disk and is then fixed on the rear end inner wall of the intermediate filtering drum.

7. A sewage treatment device for water conservancy construction according to claim 6, characterized in that: The stirring rod on the intermediate rotating shaft is located in the intermediate filter drum, and the surface of the intermediate rotating shaft is provided with a first spray hole connected to the inner cavity inside the intermediate rotating shaft; The driving mechanism includes an intermediate gear and a first pulley, the front end of the intermediate rotating shaft extending through the processing tank and then being fixedly connected, and a side gear, the front end of the side rotating shaft extending through the processing tank and then being fixed; The side gear is meshed with the side of the middle gear, the front end of the active roller is fixed with a connecting shaft, the front end of the connecting shaft extends out of the sewage conveying box and is fixedly connected to a second pulley, and a belt is connected between the first pulley and the second pulley.

8. A sewage treatment device for water conservancy construction according to claim 7, characterized in that: The aeration mechanism includes a gas collecting cylinder fixed at the front end of the treatment tank, wherein two cavities distributed front and back are formed inside the gas collecting cylinder through a middle partition, and a gas collecting trumpet is connected to the front end of the middle rotating shaft after passing through the middle partition, and the rear end of the gas collecting trumpet is connected to the inner cavity inside the middle rotating shaft through an opening at the front end of the middle rotating shaft; A connecting frame is installed on the inner wall of the air collecting bell tube, and the front end of the connecting frame is fixed to the middle part of the rear end of the fan blade; The front end of the air duct is fixed to the middle partition, and the horn air inlet on the middle partition is connected to the air duct. The rear end of the air duct extends into the inner wall of the accommodating cavity, and a second spray hole is provided on the part of the air duct surface protruding from the inner wall of the accommodating cavity.

9. A sewage treatment device for water conservancy construction according to claim 8, characterized in that: The front end of the gas collecting cylinder is also provided with a protective net, and the side of the gas collecting cylinder is also provided with a slot for extending a belt.

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