Pipe cap structure for improving efficiency of AAO internal reflux pump

Abstract

The utility model relates to a pipe cap structure for improving the efficiency of an AAO internal reflux pump, and aims to solve the problems that a through-wall reflux pump is adopted in a current internal reflux channel to lift nitrification liquid, the nitrification liquid backflow phenomenon occurs at a pipe orifice due to shutdown, the height of the pipe orifice is limited by lift due to the fact that a short pipe is arranged to lift the height of the pipe orifice, and the through-wall reflux lifting operation effect is affected. The device comprises a flow guide assembly which is arranged between a water channel and a backflow channel and is communicated with the water channel and the backflow channel, and a submersible pump which is arranged at the bottom in the water channel and is communicated with the flow guide assembly, the flow guide assembly comprises a flow guide pipe, and the top in the flow guide pipe is detachably provided with a bearing assembly; according to the utility model, the sealing of the end part of the flow guide pipe is realized, the requirement on the lift of the submersible pump is reduced, the influence on the through-wall backflow lifting operation effect caused by lift lifting is reduced, and the lift can be ensured while the backflow phenomenon of nitrification liquid is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and in particular to a pipe cap structure for improving the efficiency of an AAO internal reflux pump. Background Art

[0002] At present, the internal reflux channel in the AAO process section adopts a through-the-wall reflux pump to lift the nitrifying liquid. Since the pump has a small head and no check valve in the pipeline, 2 of the 3 units (two in use and one in standby) are turned on on one side during operation. When they are stopped, the nitrifying liquid will flow back from the pipe mouth. Later, a short pipe is set to raise the pipe mouth height. However, after raising the pipe mouth height, the head is restricted again, and it is sometimes impossible to lift. This seriously affects the effect of the through-the-wall reflux lifting operation, and it is impossible to avoid the backflow of nitrifying liquid while ensuring the head. In view of this, we propose a pipe cap structure to improve the efficiency of the AAO internal reflux pump. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a pipe cap structure for improving the efficiency of the AAO internal reflux pump, so as to solve the current internal reflux channel using a through-wall reflux pump to lift the nitrifying liquid. When the pump is stopped, the nitrifying liquid will flow back at the pipe mouth. The short pipe is set to lift the height of the pipe mouth, which will be restricted by the lift, affecting the effect of the through-wall reflux lifting operation, and it is impossible to avoid the backflow of the nitrifying liquid while ensuring the lift.

[0004] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a pipe cap structure for improving the efficiency of the reflux pump in the AAO, including a diversion component arranged between the water channel and the reflux channel and connected to the water channel and the reflux channel, and a submersible pump arranged at the bottom of the water channel and connected to the diversion component;

[0005] The flow guide assembly includes a flow guide pipe, a receiving assembly is detachably installed on the top of the flow guide pipe, and a pipe cap assembly is movably arranged in the receiving assembly for sealing one end of the flow guide pipe under the influence of negative pressure in the flow guide pipe and its own weight;

[0006] The pipe cap assembly comprises a pipe cap body, the bottom end of which is configured with a floating tube, the floating tube is movably arranged in the receiving assembly, and a plurality of discharge grooves are provided in a circular array on the outer edge surface of the floating tube.

[0007] Preferably, one end of the guide pipe is connected to the submersible pump, and a tray is fixedly provided on a side of the outer edge surface of the guide pipe away from the submersible pump, and the tray abuts against the bottom of the reflux channel.

[0008] Preferably, a sealing gasket is fixedly provided at the bottom end of the tube cap body, and a sealing cavity for the tube cap body to fall into is opened at the top end of the tray, and the sealing gasket abuts against the bottom of the sealing cavity.

[0009] Preferably, the housing assembly includes a sleeve, the sleeve is movably arranged at one end of the guide tube, and the floating tube is movably arranged in the sleeve, a fixing ring is fixedly arranged on the top of the outer edge surface of the sleeve, and the fixing ring is detachably connected to the guide tube by bolts.

[0010] Preferably, the bottom end of the outer edge surface of the floating tube is configured with a plurality of guide keys in an annular array, and the bottom end of the inner edge surface of the sleeve is configured with a plurality of guide grooves in an annular array, and the guide keys are slidably disposed in the corresponding guide grooves.

[0011] Preferably, the pipe cap body and the floating tube are made of stainless steel, and the pipe cap body is in a truncated cone structure with a concave bottom, and the top of the pipe cap body is provided with a diversion slope for reducing water resistance.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model realizes sealing of one end of the guide pipe by cooperating with the pipe cap assembly and the receiving assembly. When it is necessary to extract the nitrification liquid in the water channel into the return channel, the nitrification liquid can be pumped into the guide pipe by the submersible pump, and the pipe cap body with the floating pipe is pushed upward by the water body, so that the nitrification liquid is discharged into the return channel through multiple discharge grooves. When the submersible pump is stopped, the negative pressure generated by the falling water body in the guide pipe, combined with the influence of the weight of the floating pipe and the pipe cap body, causes the pipe cap body to fall back to the top of the guide pipe, thereby realizing sealing of the end of the guide pipe, reducing the demand for the head of the submersible pump, reducing the influence of the lifting head on the through-wall return lifting operation effect, and avoiding the backflow of the nitrification liquid while ensuring the head.

[0014] 2. The utility model cooperates with a tray with a sealing cavity on the top and a pipe cap body with a sealing gasket. When the pipe cap body falls back and abuts against the top of the guide pipe, the sealing gasket arranged at the bottom of the pipe cap body abuts against the bottom of the sealing cavity, and cooperates with the negative pressure generated by the falling water in the guide pipe to fully squeeze the sealing gasket, thereby further improving the sealing between the pipe cap body and the tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the planar structure of the utility model in the installed state;

[0016] Figure 2 It is a structural schematic diagram of the flow guide assembly in the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the flow guide component in the utility model in a disassembled state;

[0018] Figure 4 It is a structural schematic diagram of the middle pipe cap assembly and the receiving assembly of the utility model in a matching state;

[0019] Figure 5 It is a partial structural schematic diagram of the flow guide component in the utility model in a cross-sectional state.

[0020] In the figure: 1, water channel; 2, return channel; 3, diversion assembly; 301, diversion pipe; 302, tray; 303, sealing chamber; 4, submersible pump; 5, pipe cap assembly; 501, pipe cap body; 502, floating pipe; 503, discharge groove; 504, guide key; 505, sealing gasket; 6, receiving assembly; 601, sleeve; 602, fixing ring; 603, guide groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Example 1: A pipe cap structure for improving the efficiency of the AAO internal reflux pump, see Figure 1 , including a diversion assembly 3 disposed between the water channel 1 and the return channel 2 and connected to the water channel 1 and the return channel 2, and a submersible pump 4 disposed at the bottom of the water channel 1 and connected to the diversion assembly 3;

[0023] Furthermore, in order to ensure the lift and avoid the backflow of nitrification liquid, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The flow guide component 3 includes a flow guide pipe 301, a receiving component 6 is detachably installed on the top of the flow guide pipe 301, and a pipe cap component 5 is movably arranged in the receiving component 6 for sealing one end of the flow guide pipe 301 under the influence of the negative pressure in the flow guide pipe 301 and its own weight, the pipe cap component 5 includes a pipe cap body 501, a floating pipe 502 is constructed at the bottom of the pipe cap body 501, the floating pipe 502 is movably arranged in the receiving component 6, and a plurality of discharge grooves 503 are formed in an annular array on the outer edge surface of the floating pipe 502, the pipe cap body 501 and the floating pipe 502 are made of stainless steel, and the pipe cap body 501 is a truncated cone structure with a concave bottom, the top of the pipe cap body 501 is provided with a diversion slope for reducing water resistance, one end of the flow guide pipe 301 is connected to the submersible pump 4, and the outer edge surface of the flow guide pipe 301 is away from the submersible pump 4 A tray 302 is fixedly arranged on one side, and the tray 302 abuts against the bottom of the reflux channel 2. The pipe cap assembly 5 cooperates with the receiving assembly 6 to achieve sealing of one end of the guide pipe 301. When it is necessary to extract the nitrification liquid in the water channel 1 into the reflux channel 2, the nitrification liquid can be pumped into the guide pipe 301 by the submersible pump 4, and the pipe cap body 501 with the floating pipe 502 can be pushed upward by the water body, so that the nitrification liquid is discharged into the reflux channel 2 through multiple discharge grooves 503. When the submersible pump 4 is stopped, the negative pressure generated by the falling water body in the guide pipe 301, combined with the influence of the weight of the floating pipe 502 and the pipe cap body 501, causes the pipe cap body 501 to fall back to the top of the guide pipe 301, thereby achieving sealing of the end of the guide pipe 301, reducing the demand for the head of the submersible pump 4, reducing the influence of the lifting head on the through-wall reflux lifting operation effect, and avoiding the backflow of the nitrification liquid while ensuring the head.

[0024] Furthermore, in order to further improve the sealing between the cap body 501 and the tray 302, see Figure 3 , Figure 4 , Figure 5The bottom end of the pipe cap body 501 is fixedly provided with a sealing gasket 505, and the top end of the tray 302 is provided with a sealing cavity 303 for the pipe cap body 501 to fall into, and the sealing gasket 505 abuts against the bottom of the sealing cavity 303. The receiving assembly 6 includes a sleeve 601, and the sleeve 601 is movably arranged at one end of the guide tube 301, and the floating tube 502 is movably arranged in the sleeve 601. A fixing ring 602 is fixedly arranged on the top of the outer edge surface of the sleeve 601, and the fixing ring 602 is detachably connected to the guide tube 301 by bolts. The bottom end of the outer edge surface of the floating tube 502 is configured with a plurality of guide keys in a circular array. 504, and the inner edge surface bottom of the sleeve 601 is provided with a plurality of guide grooves 603 in an annular array, the guide key 504 is slidably arranged in the corresponding guide groove 603, through the cooperation of the tray 302 with a sealing cavity 303 on the top and the pipe cap body 501 with a sealing gasket 505, when the pipe cap body 501 falls back and abuts against the top of the guide tube 301, the sealing gasket 505 arranged at the bottom of the pipe cap body 501 abuts against the bottom of the sealing cavity 303, cooperates with the negative pressure generated by the falling water body in the guide tube 301 to fully squeeze the sealing gasket 505, further improves the sealing between the pipe cap body 501 and the tray 302, and realizes double sealing.

[0025] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A pipe cap structure for improving the efficiency of an AAO internal reflux pump, characterized in that: It comprises a diversion assembly (3) arranged between a water channel (1) and a return channel (2) and connected to the water channel (1) and the return channel (2), and a submersible pump (4) arranged at the bottom of the water channel (1) and connected to the diversion assembly (3); The flow guide component (3) comprises a flow guide tube (301), a receiving component (6) is detachably mounted on the top of the flow guide tube (301), and a pipe cap component (5) is movably arranged in the receiving component (6) for sealing one end of the flow guide tube (301) under the influence of negative pressure in the flow guide tube (301) and its own weight; The pipe cap assembly (5) comprises a pipe cap body (501), the bottom end of which is provided with a floating tube (502), the floating tube (502) being movably arranged in the receiving assembly (6), and a plurality of discharge grooves (503) are provided in a circular array on the outer edge surface of the floating tube (502).

2. The pipe cap structure for improving the efficiency of the AAO internal reflux pump according to claim 1, characterized in that: One end of the guide pipe (301) is connected to the submersible pump (4), and a tray (302) is fixedly provided on a side of the outer edge of the guide pipe (301) away from the submersible pump (4), and the tray (302) abuts against the inner bottom of the return channel (2).

3. The pipe cap structure for improving the efficiency of the AAO internal reflux pump according to claim 2, characterized in that: A sealing gasket (505) is fixedly provided at the bottom end of the tube cap body (501), and a sealing cavity (303) for the tube cap body (501) to fall into is opened at the top end of the tray (302), and the sealing gasket (505) abuts against the inner bottom of the sealing cavity (303).

4. The pipe cap structure for improving the efficiency of the AAO internal reflux pump according to claim 1, characterized in that: The receiving assembly (6) comprises a sleeve (601), the sleeve (601) being movably arranged at one end inside the flow guide tube (301), and the floating tube (502) being movably arranged inside the sleeve (601), a fixing ring (602) being fixedly arranged at the top of the outer edge surface of the sleeve (601), and the fixing ring (602) and the flow guide tube (301) being detachably connected via bolts.

5. The pipe cap structure for improving the efficiency of the AAO internal reflux pump according to claim 4, characterized in that: The bottom end of the outer edge surface of the floating tube (502) is provided with a plurality of guide keys (504) in a circular array, and the bottom end of the inner edge surface of the sleeve (601) is provided with a plurality of guide grooves (603) in a circular array, and the guide keys (504) are slidably disposed in the corresponding guide grooves (603).

6. The pipe cap structure for improving the efficiency of the AAO internal reflux pump according to claim 1, characterized in that: The pipe cap body (501) and the floating tube (502) are made of stainless steel, and the pipe cap body (501) is a truncated cone structure with a concave bottom. The top of the pipe cap body (501) is provided with a diversion slope for reducing water resistance.

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