Drainage mechanism with anti-splashing function

Abstract

The drainage mechanism comprises a buffer tank, a sleeve, a liquid pumping unit and a plurality of flow slowing pieces, a liquid outlet pipe is arranged at the lower end of the buffer tank, one end of the sleeve is coaxially and fixedly arranged in the buffer tank, an annular space is defined between the outer wall of the sleeve and the inner wall of the buffer tank, and the liquid pumping unit is arranged in the annular space. The liquid pumping unit is communicated with a liquid inlet pipe at the other end of the sleeve; the multiple flow slowing pieces are arranged in the annular space at intervals in the height direction and connected with the inner side wall of the buffer tank, overflow grooves with upward openings are defined between the flow slowing pieces and the inner side wall of the buffer tank, and annular gaps are defined between the flow slowing pieces and the outer wall of the sleeve; the inlet of the next stage of overflow groove is located under the outlet of the previous stage of overflow groove, and the uppermost overflow groove is communicated with at least one liquid discharge pipe at the top of the sleeve. The problem that in the working process of a water pump in the prior art, when pressure fluctuation is large or operation is improper, liquid splashing often happens to a liquid outlet of the water pump is solved.

Description

Technical Field

[0001] This utility model relates to the field of drainage mechanism technology, specifically to a drainage mechanism with anti-splash function. Background Technology

[0002] Wastewater refers to water discharged from domestic and industrial sources that has become polluted and lost its original function. It mainly consists of water used in daily life, which contains a relatively high amount of organic matter and is relatively easy to treat, requiring it to be transported to a wastewater treatment plant for centralized processing.

[0003] After the wastewater has undergone preliminary treatment to remove impurities, a water pump is needed to transport the wastewater.

[0004] When a water pump starts or stops, or when there is a sudden change in flow rate, pressure fluctuations will occur in the system, which often causes liquid to splash out of the pump outlet. Therefore, an outlet buffer device, also known as a buffer tank or expansion tank, is needed in the water pump system. Its main purpose is to improve the flow characteristics of the fluid, reduce pressure fluctuations, and thus protect the pump and the entire pipeline system. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a drainage mechanism with anti-splash function, which solves the problem that liquid often splashes from the outlet of the water pump when the pressure fluctuates greatly or the operation is improper during the operation of the water pump.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a drainage mechanism with anti-splash function, including a buffer tank, a sleeve, and a liquid extraction unit. The lower end of the buffer tank is provided with a liquid outlet pipe. One end of the sleeve is coaxially fixed inside the buffer tank. An annular space is formed between the outer wall of the sleeve and the inner wall of the buffer tank. The liquid extraction unit is connected to the liquid inlet pipe at the other end of the sleeve. It also includes multiple flow-slowing elements, which are spaced apart along the height direction in the annular space and connected to the inner side wall of the buffer tank. Each flow-slowing element and the inner side wall of the buffer tank form an upward-opening overflow groove. Each flow-slowing element and the outer wall of the sleeve form an annular gap. The inlet of the next-level overflow groove is located directly below the outlet of the previous-level overflow groove. The uppermost overflow groove is connected to at least one row of liquid pipes at the top of the sleeve.

[0008] In some embodiments, a manual valve is provided on the pipe connecting the pumping unit and the inlet pipe.

[0009] In some embodiments, a flow meter is also provided on the pipe connecting the pumping unit and the inlet pipe.

[0010] In some embodiments, a one-way valve is also provided on the pipe connecting the pumping unit and the inlet pipe.

[0011] In some embodiments, a filter screen is provided inside the sleeve above the inlet pipe, and a drain valve is also provided at the lower end of the sleeve.

[0012] In some embodiments, a plurality of baffles are spaced apart above the filter screen inside the sleeve, and the plurality of baffles divide the interior of the sleeve into continuous curved channels.

[0013] In some embodiments, the curved channel is S-shaped.

[0014] In some embodiments, at least one perforated plate is fixedly disposed inside the buffer tank below the flow-retarding element.

[0015] In some embodiments, the flow-retarding element includes a circular tube and a circular ring, the circular ring being fixedly disposed at one end of the circular tube and fixedly connected to the inner wall of the buffer tank.

[0016] In some embodiments, at least one of the drain pipes extends above the overflow tank.

[0017] Compared with the prior art, the present invention provides a drainage mechanism with anti-splash function. One end of a sleeve is coaxially fixed inside a buffer tank. An annular space is formed between the outer wall of the sleeve and the inner wall of the buffer tank. The liquid pumping unit is connected to the liquid inlet pipe at the other end of the sleeve. Multiple flow-slowing elements are spaced apart along the height direction in the annular space and connected to the inner side wall of the buffer tank. Each flow-slowing element and the inner side wall of the buffer tank form an upward-opening overflow groove. Each flow-slowing element and the outer wall of the sleeve form an annular gap. The inlet of the next-level overflow groove is located directly below the outlet of the previous-level overflow groove. The uppermost overflow groove is connected to at least one row of liquid pipes at the top of the sleeve. The liquid is decelerated once when it is delivered into the sleeve, and it is decelerated a second time when it flows through the overflow grooves to the lower end of the buffer tank. This ensures that the liquid output from the outlet pipe has a slow flow rate and does not splash, thus avoiding pollution to the outside world. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a drainage mechanism with anti-splash function provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the buffer tank provided in this embodiment of the utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0021] Figure 4 This is a schematic diagram of the flow-retarding component provided in an embodiment of this utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] To address the technical problem in existing technologies where water pumps often splash at the outlet when pressure fluctuates significantly or the operation is improper, this invention provides a drainage mechanism with anti-splash function, which can reduce the speed of the liquid output from the water pump.

[0024] Please see Figure 1 and Figure 4 , Figure 1 and Figure 4 A drainage mechanism with anti-splash function according to one embodiment of the present invention includes a buffer tank 1, a sleeve 2, a liquid extraction unit 3, and multiple flow-retarding components 4. The lower end of the buffer tank 1 is provided with a liquid outlet pipe 11. One end of the sleeve 2 is coaxially fixed inside the buffer tank 1. An annular space is formed between the outer wall of the sleeve 2 and the inner wall of the buffer tank 1. The liquid extraction unit 3 is connected to the liquid inlet pipe 2a at the other end of the sleeve 2. Multiple flow-retarding components 4 are spaced apart along the height direction in the annular space and connected to the inner side wall of the buffer tank 1. Each flow-retarding component 4 and the inner side wall of the buffer tank 1 form an overflow groove 4a with an upward opening. Each flow-retarding component 4 and the outer wall of the sleeve 2 form an annular gap. The inlet of the next level overflow groove is located directly below the outlet of the previous level overflow groove. The uppermost overflow groove is connected to at least one row of liquid pipes 2b at the top of the sleeve 2.

[0025] In this specific embodiment, the liquid pumping unit 3 is a water pump. The liquid pumping unit 3 can first pump the liquid into the sleeve 2 for a first deceleration. In addition, at least one of the drain pipes 2b extends to the top of the overflow tank. The liquid in the sleeve 2 can be transported to the uppermost overflow tank through the drain pipe 2b. The liquid flows from top to bottom into each of the lower overflow tanks for a second deceleration.

[0026] Based on the above scheme, in order to further reduce the liquid flow rate, at least one perforated plate 8 is fixedly installed in the buffer tank 1 below the flow-slowing component 4.

[0027] Based on the above scheme, in order to filter out impurities in the liquid, specifically, a filter screen 21 is provided inside the sleeve 2 above the liquid inlet pipe 2a, and a drain valve 22 is also provided at the lower end of the sleeve 2; it should be noted that by opening the drain valve 22, the liquid inside the sleeve 2 can backflush the filter screen 21, and the impurities attached to the filter screen 21 can be output from the drain valve 22.

[0028] Based on the above scheme, multiple baffles 23 are spaced apart above the filter screen 21 inside the sleeve 2. The multiple baffles 23 divide the interior of the sleeve 2 into continuous curved channels. Specifically, the curved channels are S-shaped. The flow velocity can be further reduced by the water flow rising inside the sleeve 2 and impacting the multiple baffles 23.

[0029] In this specific embodiment, the flow-retarding component 4 includes a circular tube 41 and a circular ring 42. The circular ring 42 is fixedly disposed at one end of the circular tube 41 and is fixedly connected to the inner side wall of the buffer tank 1. It should be noted that the difference between two adjacent overflow tanks is 5 cm, that is, when the liquid in the upper overflow tank flows out, it can flow into the lower overflow tank.

[0030] In one embodiment, the pumping unit 3 is connected to the inlet pipe 2a by a manual valve 5, a flow meter 6, and a check valve 7. When the pumping unit 3 is in use, the manual valve 5 needs to be kept open, while the check valve 7 opens automatically under the action of liquid impact. The liquid can then be transported into the sleeve 2 through the pumping unit 3.

[0031] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below:

[0032] The liquid is pumped into the sleeve by the pumping unit 3. The liquid rises in the sleeve 2 and is decelerated once. Then, the liquid is pumped into the uppermost overflow tank through the drain pipe 2b. The liquid can then flow from top to bottom into the various overflow tanks below for a second deceleration. The liquid flowing out of the lowermost overflow tank is decelerated a third time through the mesh plate 8 to ensure that the flow rate of the liquid output from the outlet pipe 11 is low.

[0033] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A drainage mechanism with anti-splash function, comprising a buffer tank, a sleeve, and a pumping unit, wherein the lower end of the buffer tank is provided with a liquid outlet pipe, one end of the sleeve is coaxially fixed inside the buffer tank, an annular space is formed between the outer wall of the sleeve and the inner wall of the buffer tank, and the pumping unit is connected to a liquid inlet pipe at the other end of the sleeve; characterized in that, It also includes multiple flow-retarding elements, which are spaced apart along the height direction within the annular space and connected to the inner wall of the buffer tank. Each flow-retarding element and the inner wall of the buffer tank form an upward-facing overflow trough. Each flow-retarding element and the outer wall of the sleeve form an annular gap. The inlet of the next-level overflow trough is located directly below the outlet of the previous-level overflow trough. The uppermost overflow trough is connected to at least one row of liquid pipes at the top of the sleeve.

2. A drainage mechanism with anti-splash function according to claim 1, characterized in that, A manual valve is installed on the pipe connecting the liquid extraction unit and the liquid inlet pipe.

3. A drainage mechanism with anti-splash function according to claim 2, characterized in that, A flow meter is also installed on the pipe connecting the liquid extraction unit and the liquid inlet pipe.

4. A drainage mechanism with anti-splash function according to claim 3, characterized in that, A one-way valve is also provided on the pipe connecting the liquid extraction unit and the liquid inlet pipe.

5. A drainage mechanism with anti-splash function according to claim 1, characterized in that, A filter screen is installed inside the sleeve above the liquid inlet pipe, and a drain valve is also provided at the lower end of the sleeve.

6. A drainage mechanism with anti-splash function according to claim 5, characterized in that, The sleeve is provided with multiple baffles spaced apart above the filter screen, and the multiple baffles divide the inside of the sleeve to form a continuous curved channel.

7. A drainage mechanism with anti-splash function according to claim 6, characterized in that, The curved channel is S-shaped.

8. A drainage mechanism with anti-splash function according to claim 1, characterized in that, At least one perforated plate is also fixed inside the buffer tank below the flow-retarding element.

9. A drainage mechanism with anti-splash function according to claim 1, characterized in that, The flow-retarding component includes a circular tube and a circular ring. The circular ring is fixed to one end of the circular tube and is fixedly connected to the inner wall of the buffer tank.

10. A drainage mechanism with anti-splash function according to claim 1, characterized in that, At least one of the drain pipes extends above the overflow tank.

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