Backwash blowdown flash tank

Abstract

The utility model relates to a backwashing blowdown flash tank which comprises a flash tank body and a connecting pipe assembly arranged on the flash tank body, the flash tank body comprises a flash tank upper cover and a flash tank main body, a water inlet is formed in the flash tank upper cover, a water outlet is formed in the bottom of the flash tank main body, a supporting table is fixedly installed on the inner wall of the flash tank main body above the water outlet, and a barrel-shaped filter screen is arranged on the supporting table; the space between the barrel-shaped filter screen and the inner wall of the flash tank main body forms a sewage storage space, the space in the barrel-shaped filter screen forms a drainage space, and a plurality of convex blocks are arranged on the inner wall of the flash tank main body; the connecting pipe assembly comprises a water supply pipe; according to the flash tank disclosed by the invention, the plurality of convex blocks are mounted on the inner wall of the flash tank main body at intervals, and the grooves formed between the adjacent convex blocks effectively serve as sound absorption structures, so that noise generated in a wastewater treatment process can be remarkably absorbed and reduced, a more quiet atmosphere is brought to a working environment, and the comfort of operators is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flash tanks, in particular to an anti-flushing sewage flash tank. Background Art

[0002] With the increasingly strict environmental protection regulations and the acceleration of the industrialization process, high-efficiency and environmentally friendly wastewater treatment equipment has become particularly important; when traditional sewage flash tanks are used to treat wastewater, there are often problems such as high noise, poor sewage discharge effect, and easy blockage, which are difficult to meet the high requirements of modern industry for wastewater treatment efficiency and environmental protection standards. In order to solve these problems, improve the efficiency and effect of wastewater treatment, and reduce the noise pollution during equipment operation, there is an urgent need for an anti-flushing sewage flash tank with a more optimized structure and more comprehensive functions. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an anti-flushing sewage flash tank that can reduce operation noise and is integrally detachable, with an anti-flushing function.

[0004] The technical problem to be solved by the utility model is realized through the following technical solutions. An anti-flushing sewage flash tank includes a flash tank body and a connecting pipe assembly installed on the flash tank body;

[0005] The flash tank body includes a flash tank upper cover and a flash tank main body that are detachably installed as a whole. An inlet is provided on the flash tank upper cover, and an outlet is provided at the bottom of the flash tank main body. A support platform is fixedly installed on the inner wall of the flash tank main body above the outlet. A barrel-shaped filter screen is arranged on the support platform. The space between the barrel-shaped filter screen and the inner wall of the flash tank main body forms a sewage storage space. A sewage discharge pipe communicating with the bottom of the sewage storage space is arranged on the outer wall of the bottom of the flash tank main body. The space inside the barrel-shaped filter screen forms a drainage space. A plurality of convex blocks are fixedly installed at intervals on the inner wall of the flash tank main body, and the grooves formed between adjacent convex blocks form sound-absorbing grooves for reducing the noise inside the flash tank main body;

[0006] The connecting pipe assembly includes a water supply pipe. The outlet end of the water supply pipe is connected with a water inlet pipe and a backwashing pipe through a three-way valve. The water inlet pipe is flange-connected to the inlet, and the backwashing pipe is internally connected to the bottom of the flash tank main body to wash the sludge deposited at the bottom of the sewage storage space.

[0007] Preferably, the flash tank upper cover is flange-connected to the top of the flash tank main body.

[0008] Preferably, the backwashing pipe and the sewage discharge pipe are located on both sides of the bottom of the barrel-shaped filter screen.

[0009] Preferably, flow meters are arranged on both the water inlet pipe and the backwashing pipe.

[0010] Preferably, the water inlet pipe includes a fixed water inlet pipe and a movable water inlet pipe. One end of the fixed water inlet pipe is connected to a three-way valve on the water supply pipe, and the other end is connected to the end of the movable water inlet pipe through a flexible pipe joint. The other end of the movable water inlet pipe is connected to the water inlet.

[0011] Preferably, an exhaust valve is provided in the middle of the upper cover of the expansion vessel.

[0012] Preferably, an upper limit block is fixedly provided on the bottom wall of the upper cover of the expansion vessel, a lower limit block is fixedly provided on the top surface of the barrel-shaped filter screen, a rubber pad is fixedly provided on the lower limit block, and after the upper cover flange of the expansion vessel is connected to the expansion vessel body, the bottom surface of the upper limit block abuts against the top surface of the rubber pad.

[0013] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0014] (1) By installing a number of convex blocks at intervals on the inner wall of the expansion vessel body, the grooves formed between adjacent convex blocks effectively serve as sound-absorbing structures, which can significantly absorb and reduce the noise generated during the wastewater treatment process, bring a more peaceful atmosphere to the working environment, and improve the comfort of the operators;

[0015] (2) The expansion vessel body is designed as a detachable structure of the upper cover of the expansion vessel and the expansion vessel body. This modular design facilitates the daily maintenance, cleaning and component replacement of the equipment, reduces the maintenance cost, and improves the maintainability and service life of the equipment;

[0016] (3) The backwash pipe in the connecting pipe assembly is internally connected to the bottom of the expansion vessel body, realizing the function of efficiently flushing the sludge deposited at the bottom of the sewage storage space, effectively preventing the situation of siltation and blockage at the bottom of the filter screen, and ensuring the continuity and efficiency of wastewater treatment;

[0017] (4) Flow meters are provided on both the water inlet pipe and the backwash pipe, which can monitor the water flow in real time, facilitate the operators to accurately control the water inlet and backwash flow rates, and improve the convenience and accuracy of operation; in addition, the movable water inlet pipe and the fixed water inlet pipe are connected through a flexible pipe joint, increasing the installation flexibility and facilitating adaptation to different installation environments;

[0018] (5) The exhaust valve provided in the middle of the upper cover of the expansion vessel can timely discharge the gas generated inside the equipment, prevent potential safety hazards caused by excessive pressure, and improve the safety of the equipment;

[0019] (6) An upper limit block, a lower limit block and a rubber pad are provided between the upper cover of the expansion vessel and the barrel-shaped filter screen, so that after the upper cover of the expansion vessel is installed on the expansion vessel body, the barrel-shaped filter screen can be kept as stationary as possible, avoiding its shaking during sewage filtration, and its structural design is reasonable. Description of the Drawings

[0020] Figure 1 is the front view structural schematic diagram of the present utility model;

[0021] Figure 2 is the front view structural schematic diagram when the connecting pipe assembly and the upper cover of the expansion vessel of the present utility model are disassembled.

[0022] In the figure: 1. Upper cover of the expansion vessel; 2. Main body of the expansion vessel; 3. Exhaust valve; 4. Water inlet; 5. Water outlet; 6. Support platform; 7. Barrel-shaped filter screen; 8. Sewage storage space; 9. Sewage discharge pipe; 10. Protrusion; 11. Upper limit block; 12. Lower limit block; 13. Rubber pad; 14. Water supply pipe; 15. Three-way valve; 16. Backwash pipe; 17. Flow meter; 18. Fixed water inlet pipe; 19. Movable water inlet pipe; 20. Flexible pipe joint. Specific embodiments

[0023] The following further describes the specific technical solutions of the present utility model with reference to the accompanying drawings, so as to facilitate those skilled in the art to further understand the present utility model without restricting its rights.

[0024] Example 1, referring to Figures 1 - 2 , a backwashing sewage expansion vessel, including an expansion vessel body with a cavity inside, including the expansion vessel body and a connecting pipe assembly installed on the expansion vessel body;

[0025] The expansion vessel body includes a detachably installed upper cover 1 of the expansion vessel and a main body 2 of the expansion vessel integrated. The upper cover 1 of the expansion vessel is flange-connected to the top of the main body 2 of the expansion vessel. An exhaust valve 3 is arranged in the middle of the upper cover 1 of the expansion vessel. A water inlet 4 is arranged on the upper cover 1 of the expansion vessel. A water outlet 5 is arranged at the bottom of the main body 2 of the expansion vessel. A support platform 6 is fixedly installed on the inner wall of the main body 2 of the expansion vessel above the water outlet 5. The support platform 6 forms a roughly square base structure. A barrel-shaped filter screen 7 is arranged on the support platform 6. The barrel-shaped filter screen 7 forms a roughly cylindrical structure, and the aperture of the mesh of its filter screen can be selected according to the usage requirements. The space between the barrel-shaped filter screen 7 and the inner wall of the main body 2 of the expansion vessel forms a sewage storage space 8. A sewage discharge pipe 9 communicating with the bottom of the sewage storage space 8 is arranged on the outer wall at the bottom of the main body 2 of the expansion vessel. The space inside the barrel-shaped filter screen 7 forms a drainage space. A plurality of protrusions 10 are fixedly installed at intervals on the inner wall of the main body 2 of the expansion vessel. The protrusions 10 form a roughly square block structure. The grooves formed between adjacent protrusions 10 form sound-absorbing grooves for reducing the noise inside the main body 2 of the expansion vessel. The sound-absorbing grooves form a roughly square groove;

[0026] An upper limit block 11 is fixedly provided on the bottom wall of the upper cover 1 of the expansion vessel. A lower limit block 12 is fixedly provided on the top surface of the barrel-shaped filter screen 7. Both the upper limit block 11 and the lower limit block 12 are formed into a substantially square block structure. A rubber pad 13 is fixedly provided on the lower limit block 12. The rubber pad 13 is formed into a square structure. After the upper cover 1 of the expansion vessel is flange-connected to the expansion vessel main body 2, the bottom surface of the upper limit block 11 abuts against the top surface of the rubber pad 13.

[0027] The connecting pipe assembly includes a water supply pipe 14. The outlet end of the water supply pipe 14 is connected with a water inlet pipe and a backwash pipe 16 through a three-way valve 15. Flow meters 17 are arranged on both the water inlet pipe and the backwash pipe 16. The backwash pipe 16 and the sewage discharge pipe 9 are located on both sides of the bottom of the barrel-shaped filter screen 7. The water inlet pipe is flange-connected to the water inlet 4. The backwash pipe 16 is internally communicated with the bottom of the expansion vessel main body 2, so as to flush the sludge deposited at the bottom of the sewage storage space 8. The water inlet pipe includes a fixed water inlet pipe 18 and a movable water inlet pipe 19. One end of the fixed water inlet pipe 18 is connected to the three-way valve 15 on the water supply pipe 14, and the other end is connected to the end of the movable water inlet pipe 19 through a flexible pipe joint 20. The other end of the movable water inlet pipe 19 is connected to the water inlet 4.

[0028] The usage principle of this backwashing and sewage discharging expansion vessel is as follows:

[0029] (1) Normal sewage discharging process: Wastewater enters through the water supply pipe 14 and is split by the three-way valve 15. Most of the wastewater enters the water inlet 4 of the expansion vessel main body through the water inlet pipe. Inside the expansion vessel main body 2, the wastewater first passes through the barrel-shaped filter screen 7 for preliminary filtration. Larger particulate matters and suspended matters are intercepted in the sewage storage space 8, while the clean wastewater passes through the filter screen and enters the drainage space, and finally is discharged from the water outlet 5. During this process, the convex block 10 and the sound-absorbing groove formed thereby effectively absorb the noise generated by the flow of wastewater, reducing the noise pollution during the operation of the equipment.

[0030] (2) Backwashing process: When the sludge in the sewage storage space 8 accumulates to a certain extent and backwashing is required, the three-way valve 15 on the water supply pipe 14 is controlled, so as to close the valve of the normal sewage discharging water inlet pipe and open the valve of the backwash pipe 16. The water in the water supply pipe 14 is switched to the backwash pipe 16 through the three-way valve 15. The high-pressure water flow directly flushes the sludge at the bottom of the sewage storage space 8, flushing the sludge to the sewage discharge pipe 9 and discharging it. During the backwashing process, the flow meter 17 can monitor the flow rate of the backwashing water in real time to ensure the flushing effect and avoid wasting water resources due to excessive flow rate. The sewage discharge pipe 9 is opened for sewage discharging during backwashing.

Claims

1. A backwashing sewage expansion vessel, characterized in that: It includes a flash vessel body and a connecting pipe assembly installed on the flash vessel body; The flash vessel body includes a detachable and integrally installed flash vessel upper cover and a flash vessel main body. An inlet is provided on the flash vessel upper cover, and an outlet is provided at the bottom of the flash vessel main body. A support platform is fixedly installed on the inner wall of the flash vessel main body above the outlet. A barrel-shaped filter screen is provided on the support platform. The space between the barrel-shaped filter screen and the inner wall of the flash vessel main body forms a sewage storage space. A sewage discharge pipe communicating with the bottom of the sewage storage space is provided on the outer wall of the bottom of the flash vessel main body. The space inside the barrel-shaped filter screen forms a drainage space. A number of convex blocks are fixedly installed at intervals on the inner wall of the flash vessel main body. The grooves formed between adjacent convex blocks form sound-absorbing grooves for reducing the internal noise of the flash vessel main body; The connecting pipe assembly includes a water supply pipe. The outlet end of the water supply pipe is connected to an inlet pipe and a backwashing pipe through a three-way valve. The inlet pipe is flange-connected to the inlet, and the backwashing pipe is internally connected to the bottom of the flash vessel main body to flush the sludge deposited at the bottom of the sewage storage space.

2. The backwashing sewage expansion vessel according to claim 1, characterized in that: The flash vessel upper cover is flange-connected to the top of the flash vessel main body.

3. The backwashing sewage expansion vessel according to claim 1, characterized in that: The backwashing pipe and the sewage discharge pipe are located on both sides of the bottom of the barrel-shaped filter screen.

4. A backwashing sewage expansion vessel according to claim 1, characterized in that: Flow meters are provided on both the inlet pipe and the backwashing pipe.

5. A backwashing sewage expansion vessel according to claim 1, characterized in that: The inlet pipe includes a fixed inlet pipe and a movable inlet pipe. One end of the fixed inlet pipe is connected to the three-way valve on the water supply pipe, and the other end is connected to the end of the movable inlet pipe through a flexible pipe joint. The other end of the movable inlet pipe is connected to the inlet.

6. The backwashing sewage expansion vessel according to claim 1, characterized in that: An exhaust valve is provided in the middle of the flash vessel upper cover.

7. The backwashing sewage expansion vessel according to claim 1, characterized in that: An upper limit block is fixedly provided on the bottom wall of the flash vessel upper cover, and a lower limit block is fixedly provided on the top surface of the barrel-shaped filter screen. A rubber pad is fixedly provided on the lower limit block. After the flash vessel upper cover is flange-connected to the flash vessel main body, the bottom surface of the upper limit block abuts against the top surface of the rubber pad.

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