Storied building hog house liquid dung gravity discharge system

Abstract

The utility model provides a building hog house liquid dung gravity discharge system which comprises a building hog house unit, each floor of the building hog house unit is provided with a unit dung hopper, and the unit dung hopper collects liquid dung conveyed by the hog house on the floor; the first manure flushing pool is communicated with the second floor of the building hog house unit and the unit manure hoppers above the second floor through pipelines; the second manure flushing pool is communicated with the first floor and the unit manure hopper of the building hog house unit through management; the excrement water well is communicated with the first excrement flushing pool and the second excrement flushing pool, and excrement water collected by the excrement water well is conveyed to a sewage treatment plant in a centralized mode; wherein the manure well is communicated with the sewage treatment plant through a main discharge pipeline, and a plurality of groups of fall wells are arranged on the main discharge pipeline. By means of gravitational potential energy of liquid dung, blocking is avoided, the liquid dung discharging requirement is met, and therefore the requirement for electric power equipment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of breeding, and in particular relates to a gravity discharge system for manure in a pig house with a building. Background Art

[0002] As the cost of pig farming materials and labor gradually increases, the problem of energy consumption has become more prominent. The daily consumption of water and electricity in large-scale farming continues to increase. Pig farms need to adopt new technologies to save energy and reduce emissions. The current low-energy consumption is beneficial to reducing the cost of pig farming, saving resources, reducing operating costs, and not polluting the environment. Efficient manure removal technology is the development trend of modern large-scale pig farms.

[0003] my country's pig farming industry is developing rapidly, and large-scale pig farms have shifted from bungalows to buildings. At present, the end of the pig house in the building (the end of the first-level manure scraping channel is discharged to the manure collection pool of the sewage treatment plant) basically adopts a mechanical manure discharge system. Generally speaking, the distance between the sewage treatment plant and the pig house unit is relatively far, generally 200-500 meters. In the long-distance mechanical manure discharge system, the corners of the pipes are prone to blockage, and the operation cost is high due to water pump damage, sewage booster pump failure and power demand. Utility Model Content

[0004] The utility model provides a gravity discharge system for manure in a building pig house, aiming to solve the problem that the current mechanical manure discharge system is easy to be blocked and has high operating cost.

[0005] The utility model is implemented as follows: a building pig house manure gravity discharge system, comprising:

[0006] Building pig house unit, each floor of the building pig house unit is provided with a manure scraping channel, and each end of the manure scraping channel is provided with a unit manure bucket, and the unit manure bucket collects manure water transported from the pig house on this floor;

[0007] A first flushing manure tank and a second flushing manure tank, wherein the first flushing manure tank is connected to the manure hoppers of the second floor and above of the pig house unit of the building through a pipeline; and the second flushing manure tank is connected to the manure hoppers of the first floor of the pig house unit of the building through a management system;

[0008] A manure well, the manure well is connected to the first manure tank and the second manure tank, the manure collected by the first manure tank and the second manure tank is transported to the manure well, and the manure collected by the manure well is centrally sent to a sewage treatment plant;

[0009] Wherein, the manure well is connected to the sewage treatment plant through a main discharge pipeline, and a plurality of drop wells are arranged on the main discharge pipeline.

[0010] Preferably, the drop well comprises a drop well body, a drop well guide groove, a drop well liquid inlet and a drop well liquid outlet;

[0011] The drop well liquid inlet and the drop well liquid outlet are arranged on non-adjacent side walls of the drop well body, and the drop well diversion groove is located between the drop well liquid inlet and the drop well liquid outlet.

[0012] The height of the liquid inlet end of the drop well guide groove is smaller than the liquid inlet of the drop well, and the liquid outlet end of the drop well guide groove is connected with the liquid outlet of the drop well.

[0013] Preferably, the manure well comprises a confluence chamber, a filter chamber and a screen machine, the confluence chamber is connected to the first manure flushing tank and the second manure flushing tank through pipelines, the filter chamber is connected to the confluence chamber, and the screen machine is arranged in the filter chamber.

[0014] Preferably, a liquid inlet pipeline is provided at the front end of the liquid inlet of the first manure flushing tank;

[0015] The liquid inlet pipeline includes a collecting pipe, a vertical conveying pipe and branch conveying pipes respectively connected to different unit manure buckets. The branch conveying pipes are respectively connected to the side walls of the vertical conveying pipes. The vertical conveying pipes will collect the manure from different branch conveying pipes and centrally collect it into the collecting pipe. The collecting pipe is connected to the first manure flushing tank.

[0016] Preferably, the height difference between the liquid inlet end of the drop well guide groove and the liquid inlet of the drop well is . meters to meters.

[0017] Preferably, a group of drop wells is arranged at intervals of m to m on the main discharge pipeline.

[0018] Preferably, an inspection well is provided at the front end of the drop well on the main discharge pipeline.

[0019] Preferably, the inspection well comprises an inspection well body, an inspection well liquid inlet pipe, an inspection well liquid outlet pipe and an inspection well diversion groove;

[0020] The inspection well liquid inlet pipe and the inspection well liquid outlet pipe are arranged on both sides of the inspection well body, and the inspection well diversion groove is connected with the inspection well liquid inlet pipe and the inspection well liquid outlet pipe.

[0021] Preferably, a confluence well is provided on the main discharge pipe. When the manure wells are more than one group, different manure wells are merged and connected to the main discharge pipe through the confluence well.

[0022] Preferably, the confluence well comprises a confluence well body, a main confluence well diversion groove and a secondary confluence well diversion groove, and the confluence well body is provided with a first confluence well liquid inlet pipe, a second confluence well liquid inlet pipe and a confluence well liquid outlet pipe;

[0023] One end of the main confluence well diversion trough is connected to the first confluence well liquid inlet pipe, and the other end is connected to the confluence well liquid outlet pipe. One end of the secondary confluence well diversion trough is connected to the second confluence well liquid inlet pipe, and the other end is connected to the middle section of the main confluence well diversion trough.

[0024] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0025] 1. The manure gravity discharge system for pig houses provided by the utility model collects manure stored in the first manure tank and the second manure tank. The first manure tank and the second manure tank can be opened regularly, and with the help of the siphon principle and the effect of gravitational potential energy, the flow rate of manure in the first manure tank and the second manure tank is accelerated during the process of flowing to the manure well, thereby improving the flushing effect of manure and avoiding the blockage of manure in the pipeline due to accumulation, agglomeration, crystallization and other phenomena of manure residues.

[0026] 2. The building pig house gravity discharge system provided by the utility model is provided with several groups of drop wells on the main discharge pipe. The main discharge pipe is divided into different pipe sections by different drop wells. The different pipe sections are arranged at different heights, and a step-by-step descent is formed in the process from the manure well to the sewage treatment plant. The manure transported by the previous pipe section will experience a vertical height drop in the drop well and then flow into the next pipe section through the drop well 400; the manure can maintain a high flow speed under the action of the drop well, so that the manure can disperse the manure clumps to solve the blockage of pipes such as manure accumulation, agglomeration, crystallization, etc.

[0027] 3. The utility model provides a building pig house manure gravity discharge system that uses gravity as the main driving force, and uses the gravitational potential energy of the manure itself to achieve the manure discharge needs, thereby reducing the need for electrical equipment and reducing the overall equipment operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a structural schematic diagram of a manure gravity discharge system for a building pig house.

[0029] Figure 2 The utility model is a schematic diagram of the structure of a manure well of a manure gravity discharge system for a pig house in a building.

[0030] Figure 3 The utility model is a schematic diagram of a drop well structure of a manure gravity discharge system for pig houses in a building.

[0031] Figure 4 The utility model is a structural schematic diagram of a central inspection well of a building pig house manure gravity discharge system.

[0032] Figure 5 The utility model provides a schematic diagram of the confluence well structure of a manure gravity discharge system for pig houses in buildings.

[0033] Description of reference numerals:

[0034] 100. Building pig house unit;

[0035] 210, first flushing manure tank; 220, second flushing manure tank;

[0036] 300, manure well; 310, confluence chamber; 320, filter chamber; 330, screen machine;

[0037] 400, drop well; 410, drop well body; 420, drop well diversion groove; 430, drop well liquid inlet; 440, drop well liquid outlet;

[0038] 510, inspection well; 511, inspection well body; 512, inspection well liquid inlet pipe; 513, inspection well liquid outlet pipe; 514, inspection well diversion trough;

[0039] 520, confluence well; 521, confluence well body; 5221, first confluence well liquid inlet pipe; 5222, second confluence well liquid inlet pipe; 523, confluence well liquid outlet pipe; 524, main confluence well diversion trough; 525, secondary confluence well diversion trough. DETAILED DESCRIPTION

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The utility model provides a building pig house manure gravity discharge system, such as Figure 1-Figure 5 As shown, the said building pig house manure gravity discharge system comprises:

[0043] A building pig house unit 100, each floor of the building pig house unit 100 is provided with a manure scraping channel, and a unit manure bucket is provided at the end of the manure scraping channel, and the unit manure bucket collects manure water transported from the pig house on this floor;

[0044] A first manure flushing tank 210 and a second manure flushing tank 220, wherein a liquid inlet pipeline is provided at the front end of the first manure flushing tank 210, and the first manure flushing tank 210 is connected to the manure hoppers of the second floor and above of the building pig house unit 100 through the liquid inlet pipeline; the second manure flushing tank 220 is connected to the first floor of the building pig house unit 100 and the manure hoppers of the units through management;

[0045] A manure well 300, wherein the manure well 300 is connected to the first manure tank 210 and the second manure tank 220, and the manure collected by the first manure tank 210 and the second manure tank 220 is transported to the manure well 300, and the manure collected by the manure well 300 is centrally sent to the sewage treatment plant through the main discharge pipe;

[0046] Among them, a plurality of drop wells 400 are arranged on the main discharge pipe connecting the manure well 300 and the sewage treatment plant. When the manure water in the manure well 300 is discharged to the sewage treatment plant, the drop wells 400 increase the height difference so that the manure water obtains a higher initial velocity to avoid accumulation inside the pipe;

[0047] In the present application, the sewage treatment plant, the building pig house unit 100, the manure scraping channel and the unit manure bucket are mature equipment in the prior art. In the present application, the first manure tank 210 and the second manure tank 220 are respectively connected to the unit manure buckets located on different floors through different pipelines. The first manure tank 210 mainly collects manure water on the second floor and above, and the second manure tank 220 collects manure water on the first floor. Here, the first manure tank 210 and the second manure tank 220 separately collect manure water on different floors, mainly to distinguish between the manure water collected on the first floor and other floors. The drainage outlets of the manure tank 210 and the second manure tank 220 are both provided with a manual and automatic gate structure. The first manure tank 210 and the second manure tank 220 are opened regularly to allow the manure water in the first manure tank 210 and the second manure tank 220 to flow into the manure well 300. The first manure tank 210 and the second manure tank 220 are separated to prevent the manure water on the second floor and above from flowing back into the unit manure bucket on the first floor. The distributed design can effectively prevent the backflow on the second floor and above, and at the same time prevent the situation that the drainage pipeline on the first floor is difficult to discharge due to the gravity potential energy difference;

[0048] In the present application, the slope between the manure well 300 and the manure collecting tank of the sewage treatment plant needs to be greater than 2.5%, so that the manure well 300 can effectively flow into the manure collecting tank of the sewage treatment plant with the help of the drop well 400; during construction, the manure collecting tank of the sewage treatment plant can be sunken, and the manure well 300 can be appropriately raised to ensure the height difference between the two. If the terrain allows, it can be achieved with the help of the terrain structure, which can reduce the construction cost;

[0049] The second manure pit 220 and the manure well 300 usually need to have a height difference of not less than 0.5 meters to ensure that the second manure pit 220 can flow into the manure well 300 by gravity. It is also preferred to arrange the second manure pit 220 and the manure well 300 in combination with the terrain; when the manure well 300 needs to be properly raised to ensure the slope between the sewage treatment plant and the second manure pit 220, when the height difference between the second manure pit 220 and the manure well 300 cannot be guaranteed, a mechanical pump can be used for extraction and transportation to make up for the height difference. Although a mechanical pump is used here to achieve transportation, the later transportation in the second manure pit 220 still relies on gravity to achieve discharge. The mechanical pump has a short transportation distance, is not easy to cause blockage, and is easy to clean. In addition, short-distance lifting saves a lot of operating costs compared to long-distance transportation.

[0050] The liquid inlet pipeline includes a collecting pipe, a vertical conveying pipe, and branch conveying pipes respectively connected to different unit manure buckets. Here, the branch conveying pipes are respectively connected to the side walls of the vertical conveying pipe. The vertical conveying pipe collects manure from different branch conveying pipes and collects it in the collecting pipe. One end of the collecting pipe is connected to the bottom end of the vertical conveying pipe, and the other end is connected to the first manure flushing tank 210. The second manure flushing tank 220 is directly connected to the unit manure bucket on the first floor through a pipeline.

[0051] The main purpose of the manure well 300 is to centrally collect the manure stored in the first manure tank 210 and the second manure tank 220. The first manure tank 210 and the second manure tank 220 can be opened regularly, and with the help of the siphon principle and the effect of gravitational potential energy, the flow rate of manure from the first manure tank 210 and the second manure tank 220 to the manure well 300 is accelerated, the flushing effect of manure is improved, and the manure residue accumulation, agglomeration, crystallization and other blockage phenomena in the pipeline are avoided;

[0052] The main discharge pipe is provided with a plurality of drop wells 400, and the main discharge pipe is divided into different pipe sections by different drop wells 400. Different pipe sections are arranged at different heights, and a step-by-step descending is formed in the process from the manure well 300 to the sewage treatment plant. The manure water transported by the previous pipe section will experience a vertical height drop in the drop well 400 and then flow into the next pipe section through the drop well 400; under the action of the drop well 400, the manure water can continuously maintain a high flow speed, so that the manure water can disperse the manure clumps to solve the pipe blockage caused by the accumulation, agglomeration, crystallization and other reasons of manure residues;

[0053] As a preferred implementation in this embodiment, the manure well 300 includes a confluence chamber 310, a filter chamber 320 and a screen machine 330. The confluence chamber 310 is connected to the first manure flushing tank 210 and the second manure flushing tank 220 through pipes, respectively. A gate is provided between the filter chamber 320 and the confluence chamber 310, and the manure in the confluence chamber 310 can enter the filter chamber 320. The screen machine 330 is arranged in the filter chamber 320, and the gap of the screen machine 330 is 10 mm.

[0054] In this embodiment, the grid machine 330 adopts the existing technology and extends from the top of the filter chamber 320 to the inside of the filter chamber 320; it can mainly filter pig hair, dry feces and garbage;

[0055] As a preferred implementation in this embodiment, the drop well 400 includes a drop well body 410, a drop well guide groove 420, a drop well liquid inlet 430 and a drop well liquid outlet 440;

[0056] The drop well liquid inlet 430 and the drop well liquid outlet 440 are arranged on non-adjacent side walls of the drop well body 410, and the drop well guide groove 420 is located between the drop well liquid inlet 430 and the drop well liquid outlet 440, wherein the liquid inlet end height of the drop well guide groove 420 is smaller than the drop well liquid inlet 430, and the liquid outlet end of the drop well guide groove 420 is connected to the drop well liquid outlet 440;

[0057] In this embodiment, the height difference between the liquid inlet end of the drop well guide groove 420 and the drop well liquid inlet 430 is 0.5 meters to 1 meter; the liquid outlet end of the drop well guide groove 420 is directly aligned and connected with the drop well liquid outlet 440, and when the manure flows out of the drop well liquid inlet 430, it will firstly perform a horizontal motion under the action of its own initial velocity and finally fall into the drop well guide groove 420; the manure reaching the drop well guide groove 420 will directly enter the drop well liquid outlet 440 along the drop well guide groove 420 and flow out of the drop well 400;

[0058] As a preferred implementation in this embodiment, the main discharge pipeline is further provided with a plurality of inspection wells 510 and confluence wells 520; the inspection wells 510 and confluence wells 520 can be independently arranged at the front end of the drop well 400;

[0059] The inspection well 510 includes an inspection well body 511, an inspection well liquid inlet pipe 512, an inspection well liquid outlet pipe 513 and an inspection well diversion groove 514; the inspection well liquid inlet pipe 512 and the inspection well liquid outlet pipe 513 are arranged on both sides of the inspection well body 511, and the inspection well diversion groove 514 connects the inspection well liquid inlet pipe 512 and the inspection well liquid outlet pipe 513; the top of the inspection well body 511 is an open structure, which is usually covered with cement board;

[0060] The inspection well 510 is mainly used for inspection and maintenance between the drop wells 400, because the flow velocity of sewage may reach the minimum value under resistance before reaching the drop well 400. The inspection well 510 is set to avoid the main discharge pipe from being blocked at the front end of the drop well 400.

[0061] The confluence well 520 includes a confluence well body 521, a main confluence well diversion groove 524 and a secondary confluence well diversion groove 525. The confluence well body 521 is provided with a first confluence well liquid inlet pipe 5221, a second confluence well liquid inlet pipe 5222 and a confluence well liquid outlet pipe 523. One end of the main confluence well diversion groove 524 is connected to the first confluence well liquid inlet pipe 5221, and the other end is connected to the confluence well liquid outlet pipe 523. One end of the secondary confluence well diversion groove 525 is connected to the second confluence well liquid inlet pipe 5222, and the other end is connected to the middle section of the main confluence well diversion groove 524.

[0062] The confluence well 520 can generally only be connected to two groups of manure wells 300. When there are more than two groups of upstream manure wells 300, multiple groups of confluence wells 520 can be connected in series to allow different manure wells 300 to be connected to the main discharge pipeline in sequence. For example, when there are three groups of manure wells 300, the first group of manure wells 300 and the second group of manure wells 300 are connected to the first group of confluence wells 520, and the first group of confluence wells 520 and the second group of confluence wells 520 are in a series state, so the liquid transported by the first group of manure wells 300 and the second group of manure wells 300 will enter the second group of confluence wells 520. At this time, the third group of confluence wells 520 is connected to the second group of confluence wells 520, so that the manure water of the first group of manure wells 300, the second group of manure wells 300 and the third group of confluence wells 520 will eventually merge in the second group of confluence wells 520 and enter the main discharge pipeline.

[0063] The inspection well diversion groove 514, the main confluence well diversion groove 524 and the secondary confluence well diversion groove 525 are all groove structures dug out at the bottom of the well body as a passage for manure water, and the inspection well liquid inlet pipe 512, the inspection well liquid outlet pipe 513, the first confluence well liquid inlet pipe 5221, the second confluence well liquid inlet pipe 5222 and the confluence well liquid outlet pipe 523 are all connected by plastic pipes as connection ports and connected to the initial end and the end of the groove for conveying liquid in and out; the drop well diversion groove 420 mentioned above also adopts this technology to guide the flow direction of manure water;

[0064] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0065] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A gravity discharge system for piggery in a building, characterized in that: include: A building pig house unit (100), each floor of the building pig house unit (100) is provided with a manure scraping channel, and each end of the manure scraping channel is provided with a unit manure bucket, and the unit manure bucket collects manure water transported from the pig houses on this floor; A first manure flushing tank (210) and a second manure flushing tank (220), wherein the first manure flushing tank (210) is connected to the manure hoppers of the second floor and above of the building pig house unit (100) through a pipeline; and the second manure flushing tank (220) is connected to the manure hoppers of the first floor and above of the building pig house unit (100) through a management system; A feces well (300), wherein the feces well (300) is connected to the first feces tank (210) and the second feces tank (220), the feces collected by the first feces tank (210) and the second feces tank (220) are transported to the feces well (300), and the feces collected by the feces well (300) are centrally transported to a sewage treatment plant; The sewage well (300) is connected to the sewage treatment plant via a main discharge pipeline, and a plurality of drop wells (400) are arranged on the main discharge pipeline.

2. A building pig house manure gravity discharge system as claimed in claim 1, characterized in that: The drop well (400) comprises a drop well body (410), a drop well guide groove (420), a drop well liquid inlet (430) and a drop well liquid outlet (440); The drop well liquid inlet (430) and the drop well liquid outlet (440) are arranged on non-adjacent side walls of the drop well body (410), and the drop well guide groove (420) is located between the drop well liquid inlet (430) and the drop well liquid outlet (440). The height of the liquid inlet end of the drop well guide groove (420) is smaller than the drop well liquid inlet (430), and the liquid outlet end of the drop well guide groove (420) is in communication with the drop well liquid outlet (440).

3. A building pig house manure gravity discharge system as claimed in claim 2, characterized in that: The manure well (300) comprises a confluence chamber (310), a filter chamber (320) and a screen machine (330); the confluence chamber (310) is connected to a first manure flushing tank (210) and a second manure flushing tank (220) through pipelines, the filter chamber (320) is connected to the confluence chamber (310), and the screen machine (330) is arranged in the filter chamber (320).

4. A building pig house manure gravity discharge system as claimed in claim 3, characterized in that: A liquid inlet pipeline is provided at the liquid inlet front end of the first manure flushing tank (210); The liquid inlet pipeline includes a collecting pipe, a vertical conveying pipe and branch conveying pipes respectively connected to different unit manure buckets, the branch conveying pipes are respectively connected to the side walls of the vertical conveying pipes, the vertical conveying pipes collect manure from different branch conveying pipes and collect it in the collecting pipe, and the collecting pipe is connected to the first manure flushing tank (210).

5. A building pig house manure gravity discharge system as claimed in claim 4, characterized in that: The height difference between the liquid inlet end of the drop well guide groove (420) and the drop well liquid inlet (430) is 0.5 m to 1 m.

6. A building pig house manure gravity discharge system as claimed in claim 5, characterized in that: A group of drop wells (400) is arranged on the main discharge pipeline at intervals of 40m to 50m.

7. A building pig house manure gravity discharge system as claimed in claim 6, characterized in that: An inspection well (510) is provided at the front end of the drop well (400) on the main discharge pipeline.

8. A building pig house manure gravity discharge system as claimed in claim 7, characterized in that: The inspection well (510) comprises an inspection well body (511), an inspection well liquid inlet pipe (512), an inspection well liquid outlet pipe (513) and an inspection well diversion groove (514); The inspection well liquid inlet pipe (512) and the inspection well liquid outlet pipe (513) are respectively arranged on both sides of the inspection well body (511), and the inspection well diversion groove (514) is connected to the inspection well liquid inlet pipe (512) and the inspection well liquid outlet pipe (513).

9. A building pig house manure gravity discharge system as claimed in claim 8, characterized in that: The main discharge pipe is provided with a confluence well (520). When the manure wells (300) are more than one group, different manure wells (300) are merged and connected to the main discharge pipe through the confluence well (520).

10. A building pig house manure gravity discharge system as claimed in claim 9, characterized in that: The confluence well (520) comprises a confluence well body (521), a main confluence well diversion groove (524) and a secondary confluence well diversion groove (525); the confluence well body (521) is provided with a first confluence well liquid inlet pipe (5221), a second confluence well liquid inlet pipe (5222) and a confluence well liquid outlet pipe (523); One end of the main confluence well diversion groove (524) is connected to the first confluence well liquid inlet pipe (5221), and the other end is connected to the confluence well liquid outlet pipe (523); one end of the secondary confluence well diversion groove (525) is connected to the second confluence well liquid inlet pipe (5222), and the other end is connected to the middle section of the main confluence well diversion groove (524).

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