Domestic sewage treatment system

Abstract

The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment system which comprises an impurity removal box and a second water pipe, a disinfection barrel is integrally formed on the right side of the impurity removal box, a water pump is fixedly installed at the bottom of the inner side of the disinfection barrel, and one side of the disinfection barrel communicates with a first water pipe. A biological purification box is fixedly connected to the end, away from the disinfection cylinder, of the first water pipe, the front side of the biological purification box communicates with an ultrafiltration cylinder through a second water pipe, and a drainage pipe is fixedly connected to one side of the ultrafiltration cylinder; and a mounting frame is fixedly connected between the inner walls of the impurity removal box. According to the improved sewage treatment system, impurities in sewage are removed through the impurity removal box, then the sewage is disinfected and precipitated through the disinfection cylinder, the impurity removal box provides power for a stirring part of the disinfection cylinder when working, meanwhile, the sewage enters the disinfection cylinder to trigger a buoyancy air bag to automatically add disinfection powder into the disinfection cylinder, and the disinfection powder is matched with rotation of the main shaft; the powder is automatically and uniformly thrown into the sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a domestic sewage treatment system. Background Art

[0002] Domestic sewage is the wastewater discharged in the daily life of residents, mainly from residential buildings and public buildings, such as houses, government agencies, schools, hospitals, stores, public places, and the toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matters and a large number of pathogenic microorganisms. The organic matters existing in domestic sewage are extremely unstable, prone to corruption and produce malodors. Bacteria and pathogens multiply in large numbers by taking the organic matters in domestic sewage as nutrients, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before being discharged, so a domestic sewage treatment system is introduced.

[0003] The existing patent (publication number: CN110589994A) discloses a domestic sewage treatment device and its treatment method: including a material dissolution chamber, an electrolysis chamber, and a degradation tank. The material dissolution chamber and the electrolysis chamber are respectively arranged in the degradation tank, and the liquid inlet of the electrolysis chamber is arranged in the material dissolution chamber. The electrolysis chamber is communicated with the degradation tank. An electrolysis sedimentation device is arranged in the electrolysis chamber, and the electrolysis sedimentation device electrolytically purifies the sewage after the material in the material dissolution chamber is dissolved. A biological degradation tank structure is arranged in the degradation tank, and anaerobic microorganisms are arranged in the biological degradation tank structure. The anaerobic microorganisms degrade the organic pollutants in the sewage. This invention removes most of the heavy metal ions in domestic sewage through the chemical drugs in the material dissolution chamber; at the same time, the electrolysis reaction in the electrolysis chamber is enhanced by the unreacted chemical drugs, so that the electrolytic sedimentation of domestic sewage in the electrolysis chamber is more thorough. At the same time, the organic pollutants in domestic sewage are degraded by microorganisms, and finally the purification of domestic sewage is more thorough. The existing technology has the following problems: in the existing sewage treatment system, mainly a filter screen is used to filter impurities in water. After long-term use, the filter screen will be blocked, resulting in a decline in the filtering effect, and manual cleaning or replacement is required. Summary of the Invention

[0004] The purpose of the present invention is to provide a domestic sewage treatment system to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A domestic sewage treatment system includes an impurity removal tank and a water pipe two. A disinfection cylinder is integrally formed on the right side of the impurity removal tank. A water pump is fixedly installed at the inner bottom of the disinfection cylinder. One side of the disinfection cylinder is communicated with a water pipe one. The end of the water pipe one far away from the disinfection cylinder is fixedly connected to a biological purification tank. The front side of the biological purification tank is communicated with an ultrafiltration cylinder through the water pipe two. One side of the ultrafiltration cylinder is fixedly connected to a drain pipe;

[0006] An installation frame is fixedly connected between the inner walls of the impurity removal box. A motor is fixedly connected to one side of the installation frame. A main sprocket is fixedly connected to one side of the motor through a connecting shaft. The main sprocket and a secondary sprocket form a transmission structure through a chain. A reciprocating lead screw is fixedly connected to the middle of the secondary sprocket. A reciprocating block is slidably connected to the middle of the reciprocating lead screw. A vertical connecting rod is fixedly connected to the bottom surface of the reciprocating block. An extrusion block is integrally formed at the bottom end of the vertical connecting rod. A trigger block is attached to the outer surface of the extrusion block. A fixing rod is fixedly connected to the bottom surface of the trigger block. A blocking block is fixedly connected to the bottom end of the fixing rod. A spring telescopic rod is fixedly connected to the bottom surface of the blocking block. The bottom end of the spring telescopic rod is fixedly connected to the inner bottom surface of the lower collection box. A limiting rod is fixedly connected to the top surface of the reciprocating block. A floating plate is slidably sleeved in the middle of the limiting rod.

[0007] Preferably, triangular guiding strips are provided on both sides of the top of the impurity removal box, and a collection groove is fixedly connected to the outer edge of the top surface of the impurity removal box.

[0008] Preferably, two placement grooves are left in the middle of the bottom of the impurity removal box. An air bubble machine is placed inside the two placement grooves. The top of the air bubble machine is connected to the inside of the impurity removal box through a pipeline.

[0009] Preferably, three blanking channels are provided at the bottom of the impurity removal box, and a blocking block, a fixing rod, and a trigger block respectively correspond to the inside of the three blanking channels. The internal width of the blanking channel is consistent with the external width of the blocking block and the trigger block.

[0010] Preferably, the top surface of the trigger block is semi-circular, the bottom surface of the extrusion block is semi-circular, and the front view section of the blocking block is triangular.

[0011] Preferably, the disinfection cylinder includes a limiting frame fixedly connected to the top of the disinfection cylinder. A limiting block is integrally formed in the middle of the limiting frame. The limiting block is slidably arranged inside a T-shaped sliding groove. The T-shaped sliding groove is opened on the upper and lower surfaces of the rack. One end of the rack is connected to the top end of the limiting rod.

[0012] Preferably, a gear is meshed with one side of the rack. The bottom surface of the gear is fixedly connected to the main shaft. The main shaft is divided into a hollow section, a connecting section, and a solid section from top to bottom. Stirring rods are integrally formed on the outer surface of the connecting section.

[0013] Preferably, a lifting rod is slidably connected to the inside of the hollow section. A floating airbag is fixedly connected to the outer surface of the bottom end of the lifting rod.

[0014] Preferably, a feeding pipe is fixedly connected to one side of the top end of the hollow section, and a discharge port is opened at the position of the hollow section below the feeding pipe.

[0015] Preferably, the impurity removal box communicates with the upper half of the disinfection cylinder, and the water outlet of the water pump coincides with the central axis of the first water pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In the present invention, the external sewage pipe is docked with the water inlet of the impurity removal box, and then a large amount of domestic sewage is discharged into the disinfection cylinder through the impurity removal box. When the sewage passes through the impurity removal box, impurities with different densities are used to separate lighter and heavier impurities, which are separated from the sewage and finally discharged into the lower collection box and collection tank for temporary storage, facilitating subsequent unified cleaning. This cleaning structure can separate impurities in the sewage without a filter screen, so there is no need to worry about problems such as reduced filtration efficiency caused by filter screen blockage. Moreover, compared with the filter screen, the service life of the mechanical structure is longer, saving the cost of frequently replacing the filter screen.

[0018] In the present invention, during the impurity removal process of the impurity removal box, the stirring rod in the disinfection cylinder is driven to rotate through rack transmission to stir the sewage in the disinfection cylinder, so that the sewage and the disinfection powder are better mixed. When the sewage enters the disinfection cylinder, the floating air bag floats automatically to add the disinfection powder into the disinfection cylinder to mix with the sewage. Moreover, the main shaft rotates with forward and reverse rotation switching. When switching, the rotation speed is slower, and after the switching is completed, the rotation speed of the main shaft is fast. According to this characteristic of the rotation speed change, the powder spraying coverage range can be adjusted adaptively, making the spraying of the disinfection powder more uniform. Description of the Drawings

[0019] Figure 1 is the main perspective structure schematic diagram of the present invention;

[0020] Figure 2 is the front view sectional perspective structure schematic diagram of the present invention;

[0021] Figure 3 is the right view sectional perspective structure schematic diagram of the present invention;

[0022] Figure 4 is the main perspective structure schematic diagram of the main shaft part of the present invention;

[0023] Figure 5 is the present invention Figure 4 the enlarged structure schematic diagram of part A therein;

[0024] Figure 6 is the exploded structure schematic diagram of the main shaft of the present invention.

[0025] In the figure: 1. Impurity removal box; 101. Mounting rack; 102. Motor; 103. Main sprocket; 104. Chain; 105. Secondary sprocket; 106. Reciprocating lead screw; 107. Reciprocating block; 108. Vertical connecting rod; 109. Extrusion block; 1010. Trigger block; 1011. Fixed rod; 1012. Sealing block; 1013. Spring telescopic rod; 1014. Lower collection box; 1015. Limiting rod; 1016. Floating plate; 1017. Triangular guide bar; 1018. Collection groove; 1019. Placing groove; 1020. Bubble machine; 1021. Feeding channel; 2. Disinfection cylinder; 201. Limiting frame; 202. Limiting block; 203. T-shaped sliding groove; 204. Rack; 205. Gear; 206. Main shaft; 206a. Hollow section; 206b. Connecting section; 206c. Solid section; 207. Stirring rod; 208. Lifting rod; 209. Buoyancy air bag; 2010. Feeding pipe; 2011. Discharge port; 3. Water pump; 4. Water pipe one; 5. Biological purification box; 6. Water pipe two; 7. Ultrafiltration cylinder; 8. Drain pipe. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 6 , the present invention provides a technical solution: a domestic sewage treatment system, including an impurity removal box 1 and a water pipe two 6. The right side of the impurity removal box 1 is integrally formed with a disinfection cylinder 2. The inner bottom of the disinfection cylinder 2 is fixedly installed with a water pump 3. One side of the disinfection cylinder 2 is communicated with a water pipe one 4. The end of the water pipe one 4 far from the disinfection cylinder 2 is fixedly connected with a biological purification box 5. The front side of the biological purification box 5 is communicated with an ultrafiltration cylinder 7 through the water pipe two 6. One side of the ultrafiltration cylinder 7 is fixedly connected with a drain pipe 8. The upper half of the impurity removal box 1 is communicated with the disinfection cylinder 2. The water outlet of the water pump 3 coincides with the central axis of the water pipe one 4; When in use, an external water pipe is docked with the water inlet end of the impurity removal box 1, domestic sewage is discharged into the interior of the impurity removal box 1, and the impurities in the sewage are removed through the impurity removal box 1. Subsequently, the sewage after impurity removal continues to flow into the disinfection cylinder 2 for disinfection. After disinfection is completed, the water pump 3 pumps the sewage into the biological purification box 5. The microorganisms in the biological purification box 5 decompose organic substances and convert them into inorganic substances to achieve the purpose of purifying water quality. Finally, the sewage in the biological purification box 5 enters the ultrafiltration cylinder 7 for purification, and the purified sewage is discharged from the drain pipe 8, that is, the treatment of domestic sewage is completed.

[0028] In this embodiment, as Figures 1 to 3As shown in the figure, a mounting frame 101 is fixedly connected between the inner walls of the impurity removal box 1. A motor 102 is fixedly connected to one side of the mounting frame 101. A main sprocket 103 is fixedly connected to one side of the motor 102 through a connecting shaft. The main sprocket 103 and a secondary sprocket 105 form a transmission structure through a chain 104. A reciprocating lead screw 106 is fixedly connected to the middle of the secondary sprocket 105. A reciprocating block 107 is slidably connected to the middle of the reciprocating lead screw 106. A vertical connecting rod 108 is fixedly connected to the bottom surface of the reciprocating block 107. An extrusion block 109 is integrally formed at the bottom end of the vertical connecting rod 108. A trigger block 1010 is attached to the outer surface of the extrusion block 109. A fixing rod 1011 is fixedly connected to the bottom surface of the trigger block 1010. A blocking block 1012 is fixedly connected to the bottom end of the fixing rod 1011. A spring telescopic rod 1013 is fixedly connected to the bottom surface of the blocking block 1012. The bottom end of the spring telescopic rod 1013 is fixedly connected to the inner bottom surface of the lower collection box 1014. A limiting rod 1015 is fixedly connected to the top surface of the reciprocating block 107. A floating plate 1016 is slidably sleeved in the middle of the limiting rod 1015. Triangular guiding strips 1017 are provided on both sides of the top of the impurity removal box 1. A collection groove 1018 is fixedly connected to the outer edge of the top surface of the impurity removal box 1. Three blanking channels 1021 are provided at the bottom of the impurity removal box 1. A blocking block 1012, a fixing rod 1011 and a trigger block 1010 are respectively corresponding to the interiors of the three blanking channels 1021. The internal width of the blanking channel 1021 is consistent with the outer widths of the blocking block 1012 and the trigger block 1010. The top surface of the trigger block 1010 is semi-circular. The bottom surface of the extrusion block 109 is semi-circular. The front view section of the blocking block 1012 is triangular. During operation, first, an external sewage pipe is docked with the impurity removal box 1, and sewage is injected into the impurity removal box 1. At this time, the motor 102 is also started. The motor 102 drives the main sprocket 103 to rotate self. The main sprocket 103 drives the secondary sprocket 105 to rotate self through the transmission of the chain 104. The rotation of the secondary sprocket 105 drives the reciprocating lead screw 106 to rotate. When the reciprocating lead screw 106 rotates, it drives the reciprocating block 107 to perform a reciprocating linear motion along the axis direction of the reciprocating lead screw 106. When the reciprocating block 107 performs a reciprocating linear motion, it drives the vertical connecting rod 108 and the limiting rod 1015 to displace synchronously. When the vertical connecting rod 108 reciprocates, it drives the extrusion block 109 at the bottom end to displace. When the extrusion block 109 moves back and forth, it continuously contacts the three trigger blocks 1010. Because the contact surfaces of the trigger block 1010 and the extrusion block 109 are both spherical, the extrusion block 109 can squeeze the trigger block 1010 downward. When the trigger block 1010 is squeezed, it drives the blocking block 1012 to move downward synchronously through the fixing rod 1011 at the bottom surface. When the blocking block 1012 moves downward, it compresses the spring telescopic rod 1013. In the normal state, the blocking block 1012 is located in the blanking channel 1021, that is, the blocking block 1012 is in contact with the inner wall of the blanking channel 1021. But at this time, the trigger block 1010 is located outside the top of the blanking channel 1021.When heavier impurities sink to the inner bottom of the impurity removal tank 1, this part of the heavier impurities will enter the feeding channel 1021 through the gap between the trigger block 1010 and the feeding channel 1021, and be blocked by the top surface of the blocking block 1012. Until the heavier impurities in the feeding channel 1021 accumulate too much, at this time, the extrusion block 109 also moves to the top of the corresponding trigger block 1010, pressing the trigger block 1010 downward. The trigger block 1010 blocks the upper end of the feeding channel 1021. Subsequently, the blocking block 1012 moves out from the lower end of the feeding channel 1021, and the previously accumulated impurities will slide along the top surface of the blocking block 1012 into the lower collection box 1014 for collection, which is convenient for later unified cleaning. This structure can prevent the feeding channel 1021 from being filled with impurities, causing the impurities to overflow from the feeding channel 1021 and enter the disinfection cylinder 2 along with the water flow. When the limit rod 1015 makes a reciprocating linear motion with the reciprocating block 107, it will drive the floating plate 1016 to move back and forth. The density of the floating plate 1016 is less than the density of the water body, so it can float on the water surface. When there are too many impurities carried by bubbles floating on the water surface, the floating plate 1016 can push the impurities floating on the water surface to both sides of the top of the impurity removal tank 1 when moving back and forth. When the floating plate 1016 moves to the edge of the top of the impurity removal tank 1, the floating plate 1016 will contact the triangular guiding strip 1017, and under the continuous rotation of the reciprocating lead screw 106, the floating plate 1016 moves upward along the triangular guiding strip 1017 until the height of the bottom edge of the floating plate 1016 exceeds the top highest point of the triangular guiding strip 1017. At this time, the floating plate 1016 pushes the impurities into the side of the triangular guiding strip 1017 away from the middle of the impurity removal tank 1. After that, these impurities will slide down along the inclined surface of the triangular guiding strip 1017 into the collection groove 1018 for collection. This structure can timely clean the impurities floating on the water surface. Otherwise, the accumulation of impurities on the water surface will affect the subsequent floating of impurities, making the impurities on the water surface thicker and thicker. Eventually, the impurities located in the lower layer of the water surface will enter the disinfection cylinder 2 along with the water flow. This impurity removal tank 1 can remove different impurities in the sewage according to the density of the impurities, and does not need to rely on a filter screen to complete, so there is no need to worry about the problem of reduced filtration efficiency due to filter screen blockage and other situations. And compared with the filter screen, the service life of the mechanical structure is longer, saving the cost of frequently replacing the filter screen.,

[0029] In this embodiment, as Figure 3As shown in the figure, there are two placement slots 1019 left in the middle of the bottom of the impurity removal tank 1. A bubble machine 1020 is placed inside the two placement slots 1019. The top of the bubble machine 1020 is connected to the inside of the impurity removal tank 1 through a pipeline; the bubble machine 1020 injects external air into the inside of the impurity removal tank 1 through the pipeline. Since the impurity removal tank 1 is filled with sewage during operation, the injection of external air will generate a large number of bubbles in the impurity removal tank 1, which will rise from the bottom to the top of the impurity removal tank 1. During the rising process of the bubbles, they will adsorb the lighter impurities and oil stains in the sewage and carry them to the liquid surface at the top of the impurity removal tank 1 to float, achieving the purpose of removing the lighter impurities. The heavier impurities will settle to the inner bottom of the impurity removal tank 1 and accumulate due to the action of gravity.

[0030] In this embodiment, as Figure 2 , Figures 4 to 6As shown, the sterilizing cylinder 2 includes a limit frame 201 fixedly connected to the top of the sterilizing cylinder 2, a limit block 202 is integrally formed in the middle of the limit frame 201, the limit block 202 is slidably arranged inside the T-shaped slide groove 203, the T-shaped slide groove 203 is arranged on the upper and lower surfaces of the rack 204, one end of the rack 204 is connected to the top of the limit rod 1015, a gear 205 is meshed on one side of the rack 204, the bottom surface of the gear 205 is fixedly connected to the main shaft 206, the main shaft 206 is divided into a hollow section 206a, a connecting section 206b and a solid section 206c from top to bottom, the outer surface of the connecting section 206b is integrally formed with a stirring rod 207, the interior of the hollow section 206a is slidably connected with a lifting rod 208, and the bottom surface of the lifting rod 208 The surface is fixedly connected with a buoyancy airbag 209, and the top side of the hollow section 206a is fixedly connected with a feed pipe 2010, and the hollow section 206a is provided with a discharge port 2011 below the feed pipe 2010; when the reciprocating block 107 performs reciprocating linear motion along the axis of the reciprocating screw 106, the reciprocating block 107 drives the rack 204 to move through the limiting rod 1015, and when the rack 204 performs linear motion, it will drive the gear 205 to rotate with the main shaft 206 as the axis, and when the rack 204 performs linear motion, the limiting block 202 will slide in the T-shaped slide groove 203 to limit the rack 204, so that the rack 204 is more stable when sliding, and when the gear 205 rotates, it will drive the main shaft 206 to rotate synchronously, and the main shaft The connecting section 206b of 206 will drive the stirring rod 207 to rotate, thereby stirring the sewage in the disinfection barrel 2, so that the sewage can be mixed with the disinfection powder faster and more evenly. In addition, through the setting of the buoyancy airbag 209, when the sewage enters the disinfection barrel 2, the buoyancy airbag 209 is lifted by the sewage liquid level. The increase in the height of the buoyancy airbag 209 will drive the lifting rod 208 to move up synchronously. The lifting rod 208 moves upward along the inner straight line of the hollow section 206a, and lifts the powder in the hollow section 206a upward. When the powder is lifted to the discharge port 2011, since the main shaft 206 is in a self-rotating state, the powder can be thrown out to the surroundings and thrown into the disinfection barrel 2. It should be noted that since the rotation of the main shaft 206 is controlled by the gear When the bar 204 reciprocates, it is driven by the gear 205, so the movement state of the main shaft 206 is not fixed, but alternates between forward and reverse rotations, so the stirring effect is better, and the structure utilizes the characteristic of the low initial rotation speed when the main shaft 206 switches between forward and reverse rotations. At this time, the centrifugal force of the main shaft 206 is small, and the distance over which the powder is thrown is shortened. When the main shaft 206 rotates at high speed, the centrifugal force is large, and the distance over which the powder is thrown is large, so that the powder throwing coverage area is more comprehensive and can be evenly thrown onto the surface of the sewage in the disinfection cylinder 2. In addition, the rise of the buoyancy airbag 209 is utilized to automatically add disinfection powder to the disinfection cylinder 2. The rising height of the buoyancy airbag 209 is affected by the liquid level, that is, the amount of added powder can be adjusted according to the amount of sewage in the disinfection cylinder 2.

[0031] Usage method and advantages of the present invention: When this domestic sewage treatment system is in use, the working process is as follows:

[0032] First, connect the external sewage pipe to the water inlet of the impurity removal tank 1, and then discharge a large amount of domestic sewage into the disinfection cylinder 2 through the impurity removal tank 1. When the sewage passes through the impurity removal tank 1, the separation of lighter and heavier impurities is achieved by utilizing the different densities of different impurities. The impurities are separated from the sewage and finally discharged into the lower collection tank 1014 and the collection groove 1018 for temporary storage, which is convenient for subsequent unified cleaning. This cleaning structure can separate the impurities in the sewage without a filter screen, so there is no need to worry about the problem of reduced filtration efficiency caused by filter screen blockage, etc. Moreover, compared with the filter screen, the service life of the mechanical structure is longer, saving the cost of frequently replacing the filter screen. Subsequently, the sewage enters the disinfection cylinder 2 and triggers the floating airbag 209, causing the floating airbag 209 to float, realizing the function of automatically adding disinfection powder, and using the rotation of the main shaft 206 to sprinkle the powder everywhere in the disinfection cylinder 2. The characteristic that the rotation speed is slower when the main shaft 206 switches between forward and reverse rotation is also utilized to change the coverage range of the sprinkled disinfection powder, making the powder sprinkling coverage area more comprehensive. After disinfection, the water pump 3 pumps the sewage through the water pipe 1 to the biological purification tank 5. After the sewage in the biological purification tank 5 is purified, the electric control valve (not shown in the figure) in the water pipe 2 is opened, so that the sewage finally enters the ultrafiltration cylinder 7 for treatment, and can be discharged from the drain pipe 8 after treatment.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A domestic sewage treatment system, comprising an impurity removal tank (1) and a second water pipe (6), characterized in that: On the right side of the impurity removal box (1), a disinfection cylinder (2) is integrally formed. At the inner bottom of the disinfection cylinder (2), a water pump (3) is fixedly installed. On one side of the disinfection cylinder (2), a first water pipe (4) is communicated. The end of the first water pipe (4) far from the disinfection cylinder (2) is fixedly connected to a biological purification box (5). The front side of the biological purification box (5) is communicated with an ultrafiltration cylinder (7) through a second water pipe (6). On one side of the ultrafiltration cylinder (7), a drain pipe (8) is fixedly connected. Between the inner walls of the impurity removal box (1), a mounting frame (101) is fixedly connected. On one side of the mounting frame (101), a motor (102) is fixedly connected. On one side of the motor (102), a main sprocket (103) is fixedly connected through a connecting shaft. The main sprocket (103) and a secondary sprocket (105) form a transmission structure through a chain (104). In the middle of the secondary sprocket (105), a reciprocating lead screw (106) is fixedly connected. A reciprocating block (107) is slidably connected to the middle of the reciprocating lead screw (106). At the bottom surface of the reciprocating block (107), a vertical connecting rod (108) is fixedly connected. At the bottom end of the vertical connecting rod (108), an extrusion block (109) is integrally formed. The outer surface of the extrusion block (109) is attached to a trigger block (1010). At the bottom surface of the trigger block (1010), a fixing rod (1011) is fixedly connected. At the bottom end of the fixing rod (1011), a blocking block (1012) is fixedly connected. At the bottom surface of the blocking block (1012), a spring telescopic rod (1013) is fixedly connected. The bottom end of the spring telescopic rod (1013) is fixedly connected to the inner bottom surface of the lower collection box (1014). At the top surface of the reciprocating block (107), a limiting rod (1015) is fixedly connected. A floating plate (1016) is slidably sleeved in the middle of the limiting rod (1015).

2. The domestic sewage treatment system according to claim 1, wherein: On both sides of the top of the impurity removal box (1), triangular guiding strips (1017) are provided, and the outer edge of the top surface of the impurity removal box (1) is fixedly connected with a collection groove (1018).

3. A domestic sewage treatment system according to claim 1, characterized in that: In the middle of the bottom of the impurity removal box (1), two placement grooves (1019) are left. Inside the two placement grooves (1019), bubble machines (1020) are placed. The top of the bubble machines (1020) is communicated with the inside of the impurity removal box (1) through a pipeline.

4. A domestic sewage treatment system according to claim 1, characterized in that: At the bottom of the impurity removal box (1), three blanking channels (1021) are provided. Inside the three blanking channels (1021), a blocking block (1012), a fixing rod (1011), and a trigger block (1010) are respectively corresponding. The internal width of the blanking channel (1021) is consistent with the outer widths of the blocking block (1012) and the trigger block (1010).

5. A domestic sewage treatment system according to claim 4, characterized in that: The top surface of the trigger block (1010) is semi-circular, the bottom surface of the extrusion block (109) is semi-circular, and the front view section of the blocking block (1012) is triangular.

6. A domestic sewage treatment system according to claim 1, characterized in that: The disinfection cylinder (2) includes a limit frame (201) fixedly connected to the top of the disinfection cylinder (2). A limit block (202) is integrally formed in the middle of the limit frame (201). The limit block (202) is slidably arranged inside a T-shaped chute (203). The T-shaped chute (203) is opened on the upper and lower surfaces of a rack (204). One end of the rack (204) is connected to the top end of a limit rod (1015).

7. A domestic sewage treatment system according to claim 6, characterized in that: One side of the rack (204) is engaged with a gear (205). The bottom surface of the gear (205) is fixedly connected to a main shaft (206). The main shaft (206) is divided into a hollow section (206a), a connection section (206b), and a solid section (206c) from top to bottom. Stirring rods (207) are integrally formed on the outer surface of the connection section (206b).

8. A domestic sewage treatment system according to claim 7, characterized in that: A lifting rod (208) is slidably connected inside the hollow section (206a). A floating airbag (209) is fixedly connected to the outer surface of the bottom end of the lifting rod (208).

9. The domestic sewage treatment system according to claim 8, characterized in that: One side of the top end of the hollow section (206a) is fixedly connected to a feed pipe (2010), and a discharge port (2011) is opened at a position below the feed pipe (2010) in the hollow section (206a).

10. A domestic sewage treatment system according to claim 1, characterized in that: The impurity removal box (1) is communicated with the upper half of the disinfection cylinder (2). The central axis of the water outlet of the water pump (3) coincides with that of the water pipe one (4).

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