Impurity interception type combined sewage pipeline

Abstract

The utility model relates to an impurity interception type combined sewage pipeline. The utility model is applicable to the technical field of sewage pipelines. The technical problem to be solved by the utility model is to provide the impurity interception type combined sewage pipeline. According to the technical scheme, the impurity interception type combined sewage pipeline comprises a first pipe body assembly, a second pipe body assembly and a third pipe body assembly, the second pipe body assembly is rotationally embedded in the first pipe body assembly, and the second pipe body assembly is used for controlling opening and closing among the water inlet, the water outlet and the impurity discharging opening so as to adjust internal water flow guiding to form a water flowing channel or an impurity discharging channel; the third pipe body assembly is rotationally embedded in the second pipe body assembly, a cavity is formed in the third pipe body assembly, an impurity interception part located in the cavity is further arranged in the third pipe body assembly, the impurity interception part is used for intercepting impurities in sewage, and the third pipe body assembly is used for adjusting the impurity interception part to be correspondingly connected with the water outlet or the water inlet.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage pipeline technical field especially an impurity interception type combined sewage pipeline. BACKGROUND

[0002] In some industrial production processes, a certain amount of sewage will be produced, and directly discharging the sewage to the sewage treatment device will cause some particulate waste residues in the sewage to be blocked in the sewage treatment device, so the sewage needs to be pre-filtered through a pipeline, and a plurality of filter screens are arranged in the pipeline to clean the particulate waste residues in the sewage.

[0003] At present, the general sewage filtering pipeline directly installs a filter screen structure in the pipeline, uses the filter screen to achieve impurity interception treatment in the sewage conveying process, when the sewage pipeline is used for a period of time, the filter screen in the sewage pipeline is disassembled for cleaning, and then the filter screen is reinstalled to continue the sewage conveying, this filter screen disassembly and assembly undoubtedly increases the working strength of the workers, and causes the whole cleaning process of the filter screen to be relatively complicated, which is not conducive to efficient cleaning of the impurities intercepted in the sewage pipeline. UTILITARIAN CONTENT

[0004] The technical problem to be solved by the utility model is that in view of the above problems, an impurity interception type combined sewage pipeline is provided.

[0005] The technical scheme adopted by the utility model is that an impurity interception type combined sewage pipeline comprises:

[0006] A first pipe body assembly, which is provided with a water inlet, a water outlet and a impurity discharge port;

[0007] A second pipe body assembly, which is rotatably embedded in the first pipe body assembly, and is used for controlling the opening and closing of the water inlet, the water outlet and the impurity discharge port to adjust the internal water flow direction to form a water flow channel or a impurity discharge channel;

[0008] A third pipe body assembly, which is rotatably embedded in the second pipe body assembly, and is provided with a cavity and a impurity interception part in the cavity, the impurity interception part is used for intercepting impurities in the sewage, and the third pipe body assembly is used for adjusting the impurity interception part to correspondingly connect the water outlet or the water inlet, so that when the third pipe body assembly is in the water flow channel, the impurity interception part can intercept the impurities flowing through the water outlet in the cavity, and when the third pipe body assembly is in the impurity discharge channel, the impurities attached to the impurity interception part are removed by the water flow of the water inlet and are discharged through the impurity discharge port.

[0009] By the above technical means, the first pipe body assembly is provided with a water inlet, a water outlet and a impurity discharge port, the second pipe body assembly and the third pipe body assembly are rotatably matched to control the opening and closing relationship between the water inlet, the water outlet and the impurity discharge port, and the switching of the internal water flow channel and the impurity discharge channel is realized. When the internal water flow channel is in the water flow channel, sewage can flow from the water inlet to the water outlet, and the impurities in the sewage can be filtered by the impurity interception part during the process, and the impurities can be left in the cavity. When the internal water flow channel is in the impurity discharge channel, the water flow can flow from the water inlet to the impurity discharge port, and the impurities on the impurity interception part can be flushed and carried to the impurity discharge port.

[0010] In some embodiments, the first pipe body assembly comprises a first flow guide box, a water inlet pipe, a water outlet pipe and a impurity discharge pipe. The outer side wall of the first flow guide box is provided with the water inlet pipe coaxial with the water inlet, the outer side wall of the first flow guide box is provided with the water outlet pipe coaxial with the water outlet, and the outer side wall of the first flow guide box is provided with the impurity discharge pipe coaxial with the impurity discharge port.

[0011] In some embodiments, the water inlet and the water outlet are oppositely arranged and located on the same axis, and the axes of the water inlet and the water outlet are perpendicular to the axis of the impurity discharge port.

[0012] In some embodiments, the top and bottom of the first flow guide box are provided with fastening seats, and the fastening seats of the top and bottom are respectively used to lock the rotation state of the third pipe body assembly and the second pipe body assembly.

[0013] In some embodiments, the second pipe body assembly comprises a second flow guide box, an end sealing disc and a first driving part. The second flow guide box is rotatably arranged in the first pipe body assembly, the bottom of the second flow guide box is connected with the end sealing disc, the end sealing disc is provided with the first driving part, the first driving part is used to drive the second flow guide box to rotate, the circumferential side wall of the second flow guide box is provided with the first flow passage, the second flow passage and the third flow passage at intervals, and the bottom of the second flow guide box is provided with an opening.

[0014] In some embodiments, when the second pipe body assembly adjusts the internal water body to be in the water flow channel, the first flow passage and the water inlet are correspondingly communicated, the second flow passage and the water outlet are correspondingly communicated, and the third flow passage is in a blocked state.

[0015] When the second pipe body assembly adjusts the internal water body to be in the impurity discharge channel, the first flow passage and the impurity discharge port are correspondingly communicated, the second flow passage is in a blocked state, and the third flow passage and the water inlet are correspondingly communicated.

[0016] In some embodiments, the third pipe body assembly comprises a third flow guide box, an end sealing disc and a second driving part, the third flow guide box is rotatably arranged in the second pipe body assembly, the top of the third flow guide box is connected with the end sealing disc, the second driving part is arranged on the end sealing disc and used for driving the third flow guide box to rotate, the circumferential side wall of the third flow guide box is arranged with a fourth flow passage, a fifth flow passage and a sixth flow passage at intervals, the fifth flow passage is connected with the impurity interception part arranged in the cavity, and the top of the third flow guide box is arranged with an opening.

[0017] In some embodiments, when the third pipe body assembly adjusts the impurity interception part to be connected with the water outlet, the fourth flow passage is in communication with the water inlet, the fifth flow passage is in communication with the water outlet, and the sixth flow passage is in a plugging state.

[0018] When the third pipe body assembly adjusts the impurity interception part to be connected with the water inlet, the fourth flow passage is opposite to the water outlet and is blocked by the second pipe body assembly, the fifth flow passage is in communication with the water inlet, and the sixth flow passage is in communication with the impurity discharge port.

[0019] The utility model discloses the beneficial effects are:

[0020] 1, the first pipe body assembly is embedded with the second pipe body assembly and the third pipe body assembly in proper order, utilizes the rotation cooperation of second pipe body assembly and third pipe body assembly, controls the opening and closing relation between water inlet, water outlet and impurity discharge port, can adjust the through-flow path of internal water body. When adjusting to water flow channel, the internal sewage flows from water inlet to water outlet, and the impurity interception part is filtered in the forward flow, and the impurity interception part can intercept the impurity in the sewage, when adjusting to the impurity discharge channel, the internal water body flows from the water inlet to the impurity discharge port, and the impurity interception part is cleaned by the water flow, and further, the impurity is sent out from the impurity discharge port, and the impurity interception part is backwashed by the water flow, and the staff need not to remove and clean the impurity interception part in the sewage pipe regularly, not only reduce the labor intensity, but also improve the cleaning and maintenance efficiency. ACCURATE DRAWINGS

[0021] Figure 1 It is the structural schematic diagram of the application.

[0022] Figure 2 It is the through-flow state diagram of the application in water flow channel.

[0023] Figure 3 It is the through-flow state diagram of the application in impurity discharge channel.

[0024] Figure 4 It is the structural schematic diagram of the first pipe body assembly in the application.

[0025] Figure 5 is a structural schematic diagram of a second pipe body assembly in the present application.

[0026] Figure 6 is a structural schematic diagram of a third pipe body assembly in the present application.

[0027] Figure 7 is an internal structural diagram of the third pipe body assembly in the present application.

[0028] Figure 8 is Figure 7 a structural schematic diagram from another angle.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, first pipe body assembly; 2, second pipe body assembly; 3, third pipe body assembly; 101, first flow guide box; 102, fastening seat; 103, water inlet pipe; 104, water outlet pipe; 105, impurity discharge pipe; 201, second flow guide box; 202, first driving part; 203, first flow-through port; 204, second flow-through port; 205, third flow-through port; 301, impurity interception part; 302, third flow guide box; 303, end sealing disc; 304, second driving part; 305, fourth flow-through port; 306, fifth flow-through port; 307, sixth flow-through port.

[0031] This specification includes references to“one embodiment” or“an embodiment.” The appearance of the phrases“in one embodiment” or“in an embodiment” does not necessarily refer to the same embodiment. Particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0032] “includes”, this term is open. As used in the appended claims, this term does not exclude additional structures or steps.

[0033] “first”,“second”, and the like. As used herein, these terms act as labels for nomenclature and do not necessarily connote any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0034] In order to make the person skilled in the art better understand the present application, the technical scheme of the present application will be further described in combination with specific embodiments.

[0035] In combination with Figures 1 to 8As shown, the embodiment is a combined sewage pipeline with impurity interception, which comprises a first pipe body assembly 1, a second pipe body assembly 2 and a third pipe body assembly 3. The second pipe body assembly 2 and the third pipe body assembly 3 are sequentially embedded in the first pipe body assembly 1. The first pipe body assembly 1, the second pipe body assembly 2 and the third pipe body assembly 3 are coaxially arranged. The second pipe body assembly 2 and the third pipe body assembly 3 can rotate relative to each other in the first pipe body assembly 1.

[0036] The first pipe body assembly 1 is provided with a water inlet, a water outlet and an impurity discharge port. The second pipe body assembly 2 is used to control the opening and closing of the water inlet, the water outlet and the impurity discharge port, so as to adjust the direction of the internal water flow, so that the internal water flow channel or the impurity discharge channel is formed. The second pipe body assembly 2 and the third pipe body assembly 3 can be switched between the water flow channel and the impurity discharge channel. The third pipe body assembly 3 is internally provided with a cavity. The third pipe body assembly 3 is internally provided with an impurity interception part 301 located in the cavity. The impurity interception part 301 is used to intercept solid impurities in sewage. The third pipe body assembly 3 is used to adjust the connection of the impurity interception part 301 to the water outlet or the water inlet, so that when the water flow channel is formed, the impurity interception part 301 can intercept the impurities flowing through the water outlet in the cavity, and when the impurity discharge channel is formed, the impurities attached to the impurity interception part 301 are removed by the water flow through the water inlet and discharged through the impurity discharge port.

[0037] In some embodiments, as shown, Figure 4 The first pipe body assembly 1 comprises a first flow guide box 101, a water inlet pipe 103, a water outlet pipe 104 and an impurity discharge pipe 105. The water inlet pipe 103 is coaxially arranged with the water inlet on the outer side wall of the first flow guide box 101. The water outlet pipe 104 is coaxially arranged with the water outlet on the outer side wall of the first flow guide box 101. The impurity discharge pipe 105 is coaxially arranged with the impurity discharge port on the outer side wall of the first flow guide box 101.

[0038] Further, the water inlet and the water outlet are oppositely arranged and located on the same axis. The impurity discharge port is arranged between the water inlet and the water outlet. The axes of the water inlet and the water outlet are perpendicular to the axis of the impurity discharge port, that is, the flow direction of the impurity discharge port is perpendicular to the flow directions of the water inlet and the water outlet.

[0039] Further, the top and the bottom of the first flow guide box 101 are provided with fastening seats 102. The fastening seat 102 on the top and the fastening seat 102 on the bottom are respectively used to lock the rotating state of the third pipe body assembly 3 and the second pipe body assembly 2.

[0040] In some embodiments, as shown, Figure 5As shown, the second pipe body assembly 2 comprises a second flow guide box 201, an end sealing disc 303 and a first driving rotating part 202. The second flow guide box 201 is rotatably arranged in the first flow guide box 101, and the outer wall of the second flow guide box 201 is attached to the inner wall of the first flow guide box 101. The bottom of the second flow guide box 201 is fixedly connected with the end sealing disc 303, and the end sealing disc 303 is provided with the first driving rotating part 202 penetrating through the bottom of the first flow guide box 101. The first driving rotating part 202 is used to drive the second flow guide box 201 to rotate. The first driving rotating part 202 is tightly rotatably connected with the fastening seat 102 at the bottom of the first flow guide box 101. The fastening seat 102 at the bottom of the first flow guide box 101 can lock the first driving rotating part 202, that is, when there is no external force acting on the first driving rotating part 202, the first driving rotating part 202 cannot rotate by itself, so as to ensure the stability of the position of the second flow guide box 201 after rotation adjustment. The circumferential side wall of the second flow guide box 201 is provided with the first flow-through port 203, the second flow-through port 204 and the third flow-through port 205 which are spaced apart, and the bottom of the second flow guide box 201 is provided with an opening.

[0041] Further, in the embodiment, the first flow-through port 203 and the second flow-through port 204 are oppositely arranged on the side wall of the second flow guide box 201, and the first flow-through port 203 and the second flow-through port 204 are on the same axis. The third flow-through port 205 is arranged between the first flow-through port 203 and the second flow-through port 204, and the axis of the third flow-through port 205 is perpendicular to the axes of the first flow-through port 203 and the second flow-through port 204.

[0042] When the second pipe body assembly 2 adjusts the internal water body to be in the water flow channel, the first flow-through port 203 is in communication with the water inlet port in correspondence, the second flow-through port 204 is in communication with the water outlet port in correspondence, and the third flow-through port 205 is in a plugging state and is plugged through the side wall of the first flow guide box 101.

[0043] When the second pipe body assembly 2 adjusts the internal water body to be in the impurity discharge channel, the first flow-through port 203 is in communication with the impurity discharge port in correspondence, the second flow-through port 204 is in a plugging state and is plugged through the side wall of the first flow guide box 101, and the third flow-through port 205 is in communication with the water inlet port in correspondence.

[0044] In some embodiments, as Figure 6 , Figure 7 and Figure 8As shown, the third pipe body assembly 3 comprises a third flow guide box 302, an end sealing disc 303 and a second driving rotating part 304. The third flow guide box 302 is rotatably arranged in the interior of the second flow guide box 201, and the outer wall of the third flow guide box 302 is attached to the inner wall of the second flow guide box 201. The top of the third flow guide box 302 is fixedly connected with the end sealing disc 303 which can be attached to the top of the second flow guide box 201. The second driving rotating part 304 is arranged on the end sealing disc 303 and penetrates the top of the first flow guide box 101. The second driving rotating part 304 is used to drive the third flow guide box 302 to rotate. The second driving rotating part 304 is tightly rotatably connected with the fastening seat 102 on the top of the first flow guide box 101. The fastening seat 102 on the top of the first flow guide box 101 can lock the second driving rotating part 304, that is, the second driving rotating part 304 cannot rotate by itself when there is no external force acting on it, so as to ensure the stability of the position of the third flow guide box 302 after rotation adjustment. The circumferential sidewall of the third flow guide box 302 is provided with the fourth flow passage 305, the fifth flow passage 306 and the sixth flow passage 307 which are arranged at intervals. The fifth flow passage 306 is connected with the impurity interception part 301 arranged in the cavity. The top of the third flow guide box 302 is provided with an opening.

[0045] Further, in the embodiment, the fourth flow passage 305 and the fifth flow passage 306 are arranged on the sidewall of the third flow guide box 302 in opposite directions. The fourth flow passage 305 and the fifth flow passage 306 are on the same axis. The sixth flow passage 307 is arranged between the fourth flow passage 305 and the fifth flow passage 306. The axis of the sixth flow passage 307 is perpendicular to the axes of the fourth flow passage 305 and the fifth flow passage 306.

[0046] When the third pipe body assembly 3 adjusts the impurity interception part 301 to be connected with the water outlet, the water inlet, the first flow passage 203 and the fourth flow passage 305 are in communication, the fifth flow passage 306, the second flow passage 204 and the water outlet are in communication, the sixth flow passage 307 is in a blocked state, the sixth flow passage 307 is in communication with the third flow passage 205 and is blocked by the sidewall of the first flow guide box 101;

[0047] When the third pipe body assembly 3 adjusts the impurity interception part 301 to be connected with the water inlet, the water inlet, the third flow passage 205 and the fifth flow passage 306 are in communication, the sixth flow passage 307, the first flow passage 203 and the impurity discharge port are in communication, the fourth flow passage 305 corresponds to the water outlet, and the fourth flow passage 305 and the water outlet are blocked by the sidewall of the second flow guide box 201.

[0048] The implementation principle of the impurity interception type combined sewage pipe in the embodiment is as follows:

[0049] When the interior of the sewage pipe is in a water flow channel, for example, Figure 2As shown, the inlet, first flow port 203, and fourth flow port 305 are connected accordingly; the fifth flow port 306, second flow port 204, and outlet are connected accordingly; the third flow port 205 and sixth flow port 307 correspond to each other and are blocked by the side wall of the first guide box 101; the impurity discharge port is blocked by the side walls of the second guide box 201 and the third guide box 302. At this time, the impurity interception part 301 corresponds to the outlet. This allows the sewage flowing into the inlet pipe 103 to enter the cavity of the third guide box 302. The sewage in the cavity flows through the impurity interception part 301 at the fifth flow port 306. The impurity interception part 301 can intercept impurities in the sewage in the cavity, so that the filtered sewage enters the outlet pipe 104 and is further discharged.

[0050] When the inside of the sewage pipe is a discharge channel, such as Figure 3 As shown, the inlet, third outlet 205, and fifth outlet 306 are connected, and the sixth outlet 307, first outlet 203, and discharge outlet are connected. The second outlet 204 is blocked by the side wall of the third guide box 302, and the fourth outlet 305 and outlet are blocked by the side wall of the second guide box 201. At this time, the impurity interception section 301 corresponds to the inlet. This allows high-pressure water or other media flowing into the inlet pipe 103 to enter the cavity of the impurity interception section 301 and flush away the impurities attached to the impurity interception section 301. The flushed impurities fall into the cavity of the third guide box 302, and the flowing water further carries the impurities in the cavity into the discharge pipe 105 through the discharge outlet.

[0051] This application achieves the switching of flow paths through the relative rotation between the first pipe assembly 1, the second pipe assembly 2, and the third pipe assembly 3, and precisely controls the positioning of different flow ports to ensure correct water flow guidance during normal filtration and backwashing, thereby effectively solving the problem of difficult cleaning of traditional fixed filter components. By adjusting the flow path through rotation, an automated backwashing function is achieved, reducing manual intervention. Cleaning can be completed without frequent disassembly of the filter device, greatly reducing maintenance difficulty and time costs. The tight rotational engagement between the first drive unit 202, the second drive unit 304, and the corresponding fastening seat 102 ensures that the filter does not rotate under no external force, guaranteeing stability after position adjustment.

[0052] Example 2:

[0053] This embodiment describes a method for using a combined sewage pipeline with impurity interception, including the following two scenarios:

[0054] When the impurity interception type combined sewage pipe is normally used, the second flow guide box 201 is first rotated by operating the first driving and rotating part 202 until the first flow-through port 203 corresponds to the water inlet and the second flow-through port 204 corresponds to the water outlet, and the third flow-through port 205 is blocked by the side wall of the first flow guide box 101. Then the third flow guide box 302 is rotated by operating the second driving and rotating part 304 until the fourth flow-through port 305 corresponds to the water inlet and the fifth flow-through port 306 corresponds to the water outlet, and the sixth flow-through port 307 is blocked by the side wall of the first flow guide box 101. At this time, the impurity interception part 301 corresponds to the water outlet pipe 104.

[0055] The sewage in the water inlet pipe 103 enters the cavity of the third flow guide box 302 through the first flow-through port 203 and the fourth flow-through port 305 in turn. Since the impurity interception part 301 is blocked by the impurity discharge pipe 105, the impurities in the sewage are further intercepted by the impurity interception part 301. The intercepted impurities are left in the cavity of the third flow guide box 302. The filtered sewage enters the water outlet pipe 104 through the fifth flow-through port 306 and the second flow-through port 204.

[0056] When the impurity interception type combined sewage pipe needs to be back-flushed to discharge impurities after working for a period of time, the second flow guide box 201 is first rotated by operating the first driving and rotating part 202, specifically 90° clockwise, until the third flow-through port 205 corresponds to the water inlet and the first flow-through port 203 corresponds to the impurity discharge port. At this time, the water outlet pipe 104 is blocked by the second flow guide box 201. Then the third flow guide box 302 is rotated 180° clockwise by operating the second driving and rotating part 304 until the fifth flow-through port 306 corresponds to the water inlet and the sixth flow-through port 307 corresponds to the impurity discharge port. At this time, the impurity interception part 301 corresponds to the water inlet pipe 103.

[0057] The water in the water inlet pipe 103 enters the inner cavity of the impurity interception part 301 through the third flow-through port 205 and the fifth flow-through port 306 in turn. The impurities on the impurity interception part 301 are back-flushed, so that the impurities on the impurity interception part 301 are washed down into the cavity of the third flow guide box 302. Then the water carrying the washed-down impurities enters the impurity discharge pipe 105 through the sixth flow-through port 307 and the first flow-through port 203 in turn, and finally is discharged by the impurity discharge pipe 105.

[0058] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A combined sewer with impurity interception, characterized by comprising: The utility model relates to a sewage treatment device, including: The first pipe body assembly (1) is provided with water inlet, water outlet and impurity discharge port; The second pipe body assembly (2) is rotatably embedded in the first pipe body assembly (1), and the second pipe body assembly (2) is used to control the opening and closing of the water inlet, the water outlet and the impurity discharge port to adjust the internal water flow direction to form a water flow channel or an impurity discharge channel; The third pipe body assembly (3) is rotatably embedded in the second pipe body assembly (2), and the third pipe body assembly (3) is provided with a cavity inside, and the third pipe body assembly (3) is further provided with an impurity interception part (301) in the cavity, the impurity interception part (301) is used to intercept the impurities in the sewage, and the third pipe body assembly (3) is used to adjust the impurity interception part (301) corresponding to the water outlet or the water inlet, so that the impurity interception part (301) can intercept the impurities flowing through the water outlet in the water flow channel, and the impurities adhered to the impurity interception part (301) can be removed by the water flow of the water inlet and discharged through the impurity discharge port in the impurity discharge channel.

2. A hybrid interceptor combined sewer according to claim 1, wherein: The first pipe body assembly (1) includes a first flow guide box (101), a water inlet pipe (103), a water outlet pipe (104) and an impurity discharge pipe (105), the outer side wall of the first flow guide box (101) is provided with the water inlet pipe (103) coaxial with the water inlet, the outer side wall of the first flow guide box (101) is provided with the water outlet pipe (104) coaxial with the water outlet, and the outer side wall of the first flow guide box (101) is provided with the impurity discharge pipe (105) coaxial with the impurity discharge port.

3. A hybrid interceptor combined sewer according to claim 2, wherein: The water inlet and the water outlet are oppositely arranged and located on the same axis, and the axes of the water inlet and the water outlet are perpendicular to the axis of the impurity discharge port.

4. The combination sewer pipe of claim 2, wherein: The top and bottom of the first flow guide box (101) are provided with fastening seats (102), and the fastening seats (102) at the top and the bottom are respectively used to lock the rotating state of the third pipe body assembly (3) and the second pipe body assembly (2).

5. The combination sewer pipe of claim 1, wherein: The second pipe body assembly (2) includes a second flow guide box (201), an end sealing disc (303) and a first driving part (202), the second flow guide box (201) is rotatably arranged in the first pipe body assembly (1), the bottom of the second flow guide box (201) is connected with the end sealing disc (303), the end sealing disc (303) is provided with the first driving part (202), the first driving part (202) is used to drive the second flow guide box (201) to rotate, the circumferential side wall of the second flow guide box (201) is provided with a first flow passage (203), a second flow passage (204) and a third flow passage (205) at intervals, and the bottom of the second flow guide box (201) is provided with an opening.

6. A combination sewer of the kind specified in claim 5, wherein: When the second pipe body assembly (2) adjusts the internal water body to be in the water flow channel, the first flow passage (203) and the water inlet are correspondingly communicated, the second flow passage (204) and the water outlet are correspondingly communicated, and the third flow passage (205) is in a blocked state; When the second pipe body assembly (2) adjusts the internal water body to be in the impurity discharge flow channel, the first through-flow port (203) is in corresponding communication with the impurity discharge port, the second through-flow port (204) is in a blocked state, and the third through-flow port (205) is in corresponding communication with the water inlet port.

7. The combination sewer pipe of claim 1, wherein: The third pipe body assembly (3) comprises a third flow guide box (302), an end sealing disc (303) and a second driving part (304). The third flow guide box (302) is rotatably arranged in the second pipe body assembly (2). The top of the third flow guide box (302) is connected with the end sealing disc (303). The end sealing disc (303) is provided with the second driving part (304). The second driving part (304) is used for driving the third flow guide box (302) to rotate. The circumferential side wall of the third flow guide box (302) is provided with a fourth through-flow port (305), a fifth through-flow port (306) and a sixth through-flow port (307) at intervals. The fifth through-flow port (306) is connected with the impurity interception part (301) located in the cavity. The top of the third flow guide box (302) is provided with an opening.

8. A combination sewer of the kind specified in claim 7, wherein: When the third pipe body assembly (3) adjusts the impurity interception part (301) to be in corresponding connection with the water outlet port, the fourth through-flow port (305) is in corresponding communication with the water inlet port, the fifth through-flow port (306) is in corresponding communication with the water outlet port, and the sixth through-flow port (307) is in a blocked state. When the third pipe body assembly (3) adjusts the impurity interception part (301) to be in corresponding connection with the water inlet port, the fourth through-flow port (305) is in corresponding connection with the water outlet port and is blocked by the second pipe body assembly (2), the fifth through-flow port (306) is in corresponding communication with the water inlet port, and the sixth through-flow port (307) is in corresponding communication with the impurity discharge port.

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