Aeration sewage tank with built-in concertina diaphragm

Abstract

The utility model discloses an aerated sewage tank with built-in organ type telescopic diaphragm, which is characterized by the following technical scheme: a water inlet, a water outlet and an air inlet are respectively arranged on the sewage tank near the bottom surface; an aeration plate is arranged on the lower part of the sewage tank above the air inlet; a circle of sewage tank edge low wall is arranged on the periphery of the upper end of the sewage tank; an exhaust type gas adjusting floating disc mechanism is arranged in the sewage tank and can float up and down with sewage on the upper surface of the sewage tank; a circle of the upper end surface of the exhaust type gas adjusting floating disc mechanism is sealingly and fixedly connected with the bottom end of the cylindrical organ type telescopic diaphragm; the top end of the organ type telescopic diaphragm is fixedly connected with the upper end of the sewage tank edge low wall; a gas gap is formed between the organ type telescopic diaphragm and the inner wall of the sewage tank and the sewage tank edge low wall; the interior of the exhaust type gas adjusting floating disc mechanism is communicated with the gas gap, so that the odor pressure in the gas gap is adjusted under the condition that the odor is not leaked.

Description

Technical Field

[0001] This invention relates to a wastewater treatment tank. In particular, it relates to an aerated wastewater treatment tank with a built-in accordion-type telescopic diaphragm for closed-loop odor collection. Background Technology

[0002] To reduce the emission of odors from sewage ponds into the atmosphere, which pollutes the air and disturbs residents, the current common technology is to install a cover over the sewage pond, such as... Figure 1 As shown, a cover 3 is installed on the sewage tank 2 to prevent it from being exposed to the elements. However, a gas phase space 4 exists between the cover 3 and the surface of the sewage 1. A large amount of odor will escape from this gas phase space 4. If this odor is not treated in time, it will gradually dissipate into the atmosphere. Therefore, a sufficiently powerful fan must be installed to "extract air" the mixture of odor and air to the treatment device, where it will be discharged into the atmosphere only after meeting the standards. The disadvantages of this method are: high energy consumption; the diluted odor increases the difficulty of achieving the required standards; the vacuum between the cover and the surface of the sewage tank accelerates the odor's escape rate; and odor continues to leak due to incomplete sealing.

[0003] To address this problem, patent number 2019224951312, entitled "Sewage Tank Without Escape," provides a solution, such as... Figure 2 , Figure 3 As shown, a bag-type diaphragm 5 is installed in the sewage tank 2 to cover the surface of the sewage 1 containing volatile gases. The horizontal portion 6 of the bag-type diaphragm 5 located on the surface of the sewage 1 can rise and fall with the rise and fall of the sewage level. The upper part of the bag-type diaphragm 5 is fixed to the edge 8 of the sewage tank by sealing fasteners 7, and contracts and expands with the rise and fall of the sewage 1. Two or more connecting pipes 9 are provided on the horizontal portion 6 of the bag-type diaphragm 5 located on the surface of the sewage 1, which are connected to the sewage 1 containing volatile gases for adding water, pumping water, sampling, or adding chemicals. A corresponding one-way valve 10 is provided at the end of the connecting pipe 9 away from the sewage 2 containing volatile gases.

[0004] However, the diaphragm is easily folded into permanent wrinkles, causing friction against the inner wall of the sewage tank and affecting its service life. Furthermore, the diaphragm expands and contracts simultaneously during operation, and this expansion and contraction is not achieved along a single axis. The frequently expanding and contracting parts of the diaphragm rub against the inner wall of the sewage tank, further impacting its service life. The existing sewage tanks have many drawbacks that are difficult to overcome:

[0005] 1. The existing diaphragm adheres to the inner wall of the sewage tank, causing adhesion and affecting the flexibility of movement.

[0006] 2. The diaphragm is attached to the inner wall of the storage tank, and friction is generated when the diaphragm moves, causing wear.

[0007] 3. The diaphragm is extremely prone to forming permanent wrinkles, affecting its lifespan.

[0008] 4. Relying on the operator's experience to collect gaseous materials not only affects product quality and work efficiency, but also impacts quality and effectiveness.

[0009] 5. The diaphragm comes into alternating contact with sewage and odors or air over a large area, causing corrosion. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide an aerated sewage tank with an internal accordion-type telescopic diaphragm that allows the telescopic diaphragm to be displaced along a single axis, so that all odors can be collected by a closed collection system without ever contacting the sewage and the inner wall of the sewage tank.

[0011] The technical solution adopted in this invention is: an aerated wastewater tank with a built-in bellows-type telescopic diaphragm, comprising a wastewater tank foundation, a wastewater tank for loading wastewater formed in the foundation, the wastewater tank having an inlet, an outlet, and an air inlet near the bottom, an aeration plate for supplying oxygen into the wastewater tank being installed above the air inlet at the lower part of the wastewater tank, a low edge wall around the upper port of the wastewater tank, and an exhaust-type gas regulating float mechanism located above the wastewater and capable of floating up and down with the wastewater. The upper end of the gas-type gas regulating float mechanism is sealed and fixedly connected to the bottom end of the cylindrical bellows-type telescopic diaphragm. The top end of the bellows-type telescopic diaphragm is fixedly connected to the upper end of the low wall at the edge of the sewage tank and sealed by a sealing element. A gas gap is formed between the bellows-type telescopic diaphragm and the sewage tank and the inner wall at the edge of the sewage tank to accommodate gas. The interior of the exhaust-type gas regulating float mechanism is connected to the gas gap to accommodate the odorous gas that is drawn into or discharged from the gas gap when the sewage rises or falls, thereby regulating the odorous gas pressure in the gas gap without leakage.

[0012] This invention discloses an aerated wastewater tank with a built-in accordion-type telescopic diaphragm. It collects odorous gases by displacing the telescopic diaphragm along a single axis, completely separating odorous gases from wastewater using two separate spaces. This transforms the manual operation into an automatic one, eliminating respiratory diseases and odor nuisance. Specifically, it has the following advantages:

[0013] 1. During the expansion and contraction movement, only the corrugated diaphragm on the side participates in axial expansion and contraction. It never comes into contact with the sewage or the inner wall of the sewage tank. Other parts do not participate in expansion and contraction. By observing the movement pattern of the corrugated diaphragm, a displacement sensor can be used for precise control.

[0014] 2. The accordion-style telescopic diaphragm has a gap between itself and the inner wall of the sewage tank, allowing for flexible movement.

[0015] 3. Since there is no contact between the accordion-style telescopic diaphragm and the inner wall of the sewage storage tank, there is no friction and no wear.

[0016] 4. The accordion-style telescopic diaphragm has a regular expansion and folding mechanism and a long service life.

[0017] 5. The expansion and folding pattern of the accordion-style telescopic diaphragm can be used to establish a fixed mathematical function model.

[0018] 6. In the accordion-type telescopic diaphragm tank, the gas phase space and liquid phase space are separate spaces. The material in the breathing chamber is always in a gas phase state, which facilitates the collection of gas phase materials, improves quality and work efficiency, and eliminates human factors.

[0019] 7. The flexible accordion-style telescopic diaphragm does not come into contact with sewage but only with odor, which greatly reduces corrosion and swelling.

[0020] 8. The accordion-type telescopic diaphragm only participates in the axial shape change and does not participate in the shape change in other directions, which makes it easy to continuously improve its performance.

[0021] 9. Simple structure and low installation cost.

[0022] 10. Since there is no sewage in the odorous space, it is easy to implement automatic and intelligent modes. Attached Figure Description

[0023] Figure 1 This is a structural diagram of existing technology;

[0024] Figure 2 This is a schematic diagram of the foundation structure of a sewage treatment plant using existing technology;

[0025] Figure 3 This is a schematic diagram of an existing diaphragm-structured wastewater treatment plant;

[0026] Figure 4 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the exhaust-type gas regulating floating disk mechanism according to the first embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the exhaust-type gas regulating floating disk mechanism according to the second embodiment of the present invention;

[0030] Figure 8 yes Figure 4, Figure 6 Sectional view of AA.

[0031] In the picture

[0032] 1: Sewage 2: Sewage tank

[0033] 3: Top cover; 4: Gas phase space

[0034] 5: Bag-type diaphragm 6: Horizontal section of bag-type diaphragm

[0035] 7: Sealing fasteners 8: Pool edge

[0036] 9: Connecting pipe; 10: Check valve

[0037] 11: Foundation of the sewage tank 12: Sewage tank

[0038] 13: Inlet 14: Outlet

[0039] 15: Air inlet 16: Aeration plate

[0040] 17: Low wall around the edge of the sewage tank 18: Exhaust-type gas regulating floating roof mechanism

[0041] 18.1a: First exhaust floating roof; 18.2a: First odor breathing chamber

[0042] 18.3a: First respiratory cavity wall; 18.4a: First airway opening

[0043] 18.5a: Floating roof of the first odorous breathing chamber; 18.6a: Accordion-type gas phase breathing chamber diaphragm.

[0044] 18.7a: Seal 18.8a: Odor Vent

[0045] 18.1b: Second exhaust floating roof; 18.2b: Second odor breathing chamber

[0046] 18.3b: Second respiratory cavity wall; 18.4b: Second airway opening

[0047] 18.5b: Second odor breathing chamber floating roof plate; 18.6b: Bag diaphragm

[0048] 18.7b: Odor vent; 19: Accordion-style telescopic diaphragm

[0049] 20: Seal 21: Gas gap

[0050] 22: Odor collection pipe 23: Odor collector

[0051] 24: Gas compressor 25: Water outlet valve

[0052] 26: Water inlet valve 27: Air valve Detailed Implementation

[0053] The following describes in detail an aerated wastewater tank with a built-in accordion-type telescopic diaphragm according to the present invention, with reference to embodiments and accompanying drawings.

[0054] like Figure 4 , Figure 6 As shown, an aerated wastewater tank with a built-in bellows-type telescopic diaphragm according to the present invention includes a wastewater tank foundation 11, and a wastewater tank 12 for loading wastewater 1 formed in the wastewater tank foundation 11. The wastewater tank 12 has an inlet 13, an outlet 14 and an air inlet 15 near the bottom surface. The inlet 13 is connected to an external water supply device through an inlet valve 25; the outlet 14 is connected to an external drainage device through an outlet valve 26; and the air inlet 15 is connected to an external air supply device through an air valve 27. An aeration plate 16 for supplying oxygen into the sewage tank 12 is installed at the lower part of the sewage tank 12 above the air inlet 15. A low wall 17 is provided around the upper port of the sewage tank 12. An exhaust-type gas regulating float mechanism 18 is installed inside the sewage tank 12, located above the sewage 1 and able to float up and down with the sewage 1. The upper end of the exhaust-type gas regulating float mechanism 18 is sealed and fixedly connected to the bottom end of a cylindrical bellows-type telescopic diaphragm 19. The top of 19 is fixedly connected to the upper end of the low wall 17 at the edge of the sewage tank and sealed by the sealing element 20. The bellows-type telescopic diaphragm 19 forms a gas gap 21 between the sewage tank 12 and the inner wall of the low wall 17 at the edge of the sewage tank. The interior of the exhaust gas regulating float mechanism 18 is connected to the gas gap 21 and is used to contain the odorous gas that is drawn into or discharged from the gas gap 21 when the sewage 1 rises or falls, thereby regulating the odorous gas pressure in the gas gap 21 without the odorous gas leaking out.

[0055] like Figure 4 , Figure 5As shown, the exhaust-type gas regulating floating plate mechanism 18 includes: a first exhaust-type floating top plate 18.1a pressed onto the sewage 1; a first breathing chamber wall 18.3a integrally formed on the first exhaust-type floating top plate 18.1a constituting a first odor breathing chamber 18.2a; a first gas connection port 18.4a formed between the first breathing chamber wall 18.3a and the first exhaust-type floating top plate 18.1a, connecting the first odor breathing chamber 18.2a with the gas gap 21; a first odor breathing chamber floating top plate 18.5a disposed within the first odor breathing chamber 18.2a; and the first odor breathing... The upper edge of the suction chamber floating roof 18.5a is sealed and fixedly connected to the bottom end of the cylindrical accordion-style gas phase breathing chamber diaphragm 18.6a. The upper end of the accordion-style gas phase breathing chamber diaphragm 18.6a is sealed and fixedly connected to the upper end of the first breathing chamber wall 18.3a via a sealing element 18.7a. The accordion-style gas phase breathing chamber diaphragm 18.6a, together with the inner wall of the first breathing chamber wall 18.3a and the first odor breathing chamber 18.2a, form a closed space that communicates only with the gas gap 21, thereby allowing the odor pressure within the gas gap 21 to be adjusted without odor leakage. A plurality of odor vent holes 18.8a are formed on the first exhaust floating roof 18.1a.

[0056] The first odorous breathing chamber 18.2a is connected to an external odorous collector 23 via an odorous collection pipe 22 that penetrates the lower part of the first breathing chamber wall 18.3a. A gas compressor 24 is installed on the odorous collection pipe 22 to collect gaseous materials generated by the volatilization of wastewater 1 and gas from the air inlet 15. The accordion-type telescopic diaphragm 19 and the accordion-type gas phase breathing chamber diaphragm 18.6a and the first odorous breathing chamber floating top plate 18.5a in the exhaust-type gas regulating floating plate mechanism 18 move vertically along a single axis, never contacting the wastewater or the inner wall of the wastewater tank, thus enabling the complete collection of odorous gases using a closed collection system.

[0057] like Figure 6 , Figure 7As shown, the exhaust-type gas regulating floating roof mechanism 18 includes: a second exhaust-type floating roof plate 18.1b pressed onto the sewage 1; a second breathing chamber wall 18.3b integrally formed on the second exhaust-type floating roof plate 18.1b; a second odor breathing chamber floating roof plate 18.5b capable of floating up and down is disposed within the second breathing chamber wall 18.3b; a ring of the lower end face of the second odor breathing chamber floating roof plate 18.5b is fixedly and sealingly connected to the upper port of a bag-type diaphragm 18.6b; the lower port of the bag-type diaphragm 18.6b is fixedly and sealingly connected to a ring on the lower inner wall of the second breathing chamber wall 18.3b; the bag-type diaphragm 18.6b... b, together with the second odorous breathing chamber floating roof plate 18.5b and the second exhaust floating roof plate 18.1b, forms a second odorous breathing chamber 18.2b. A second gas connection port 18.4b is formed on the wall 18.3b of the second breathing chamber, between the lower port of the bag-type diaphragm 18.6b and the second exhaust floating roof plate 18.1b, connecting the second odorous breathing chamber 18.2b to the gas gap 21. The second odorous breathing chamber floating roof plate 18.5b floats up and down depending on the amount of gas and odorous gas in the second odorous breathing chamber 18.2b, thereby regulating the odorous gas pressure within the gas gap 21 without leakage of odorous gas. A plurality of odorous gas outlet holes 18.8a are formed on the second exhaust floating roof plate 18.1b.

[0058] The lower part of the second odorous breathing chamber 18.2b is connected to an externally mounted gaseous material collector 23 via a gaseous material collection pipe 22 that penetrates the wall 18.3b of the second breathing chamber. A gas compressor 24 is mounted on the gaseous material collection pipe 22 to collect gaseous materials generated by the wastewater 1 and gas from the air inlet 15. The bellows-type telescopic diaphragm 19 and the second odorous breathing chamber floating top plate 18.5b and the bag-type diaphragm 18.6b in the exhaust-type gas regulating floating plate mechanism 18 move vertically along a single axis, never contacting the wastewater or the inner wall of the wastewater tank, thus enabling the complete collection of odorous gases using a closed collection system.

Claims

1. An aerated wastewater tank with a built-in bellows-type telescopic diaphragm, comprising a wastewater tank foundation, a wastewater tank for loading wastewater formed in the foundation, the wastewater tank having an inlet, an outlet, and an air inlet near its bottom, and an aeration plate for supplying oxygen into the wastewater tank is disposed above the air inlet at the lower part of the wastewater tank, characterized in that, A low wall is provided around the upper port of the sewage tank. Inside the sewage tank, there is a venting-type gas regulating float mechanism that floats above the sewage and moves up and down with it. The upper end of the venting-type gas regulating float mechanism is sealed and fixedly connected to the bottom end of a cylindrical bellows-type telescopic diaphragm. The top end of the bellows-type telescopic diaphragm is fixedly connected to the upper end of the low wall of the sewage tank and sealed with a sealing element. A gas gap is formed between the bellows-type telescopic diaphragm, the sewage tank, and the inner wall of the low wall of the sewage tank to accommodate gas. The interior of the venting-type gas regulating float mechanism is connected to the gas gap to accommodate the odorous gas that is drawn in or discharged from the gas gap when the sewage rises or falls, thereby regulating the odorous gas pressure in the gas gap without leakage. During the telescopic movement, only the accordion-style telescopic diaphragm on the side participates in axial telescopic movement. It never comes into contact with sewage or the inner wall of the sewage tank, and other parts do not participate in telescopic movement. The aforementioned exhaust-type gas regulating floating plate mechanism includes: a first exhaust-type floating top plate pressed on the sewage; a first breathing chamber wall integrally formed on the first exhaust-type floating top plate to form a first odor breathing chamber; a first gas connection port formed between the first breathing chamber wall and the first exhaust-type floating top plate to connect the first odor breathing chamber with the gas gap; a first odor breathing chamber floating top plate disposed inside the first odor breathing chamber; a ring on the upper surface of the first odor breathing chamber floating top plate being sealed and fixedly connected to the bottom end of a cylindrical accordion-type gas phase breathing chamber diaphragm; the upper end of the accordion-type gas phase breathing chamber diaphragm being sealed and fixedly connected to the upper end of the first breathing chamber wall through a sealing element; the accordion-type gas phase breathing chamber diaphragm, together with the inner wall of the first breathing chamber wall and the first odor breathing chamber, form a closed space that is only connected to the gas gap, thereby enabling the regulation of the odor pressure in the gas gap without odor leakage. Alternatively, the exhaust-type gas regulating floating plate mechanism includes: a second exhaust-type floating top plate pressed on the sewage; a second breathing chamber wall integrally formed on the second exhaust-type floating top plate; a second odor breathing chamber floating top plate that can float up and down is provided inside the second breathing chamber wall; a ring on the lower end face of the second odor breathing chamber floating top plate is fixedly and sealed to the upper port of a bag-type diaphragm; the lower port of the bag-type diaphragm is fixedly and sealed to a ring on the lower inner wall of the second breathing chamber wall; the bag-type diaphragm, the second odor breathing chamber floating top plate, and the second exhaust-type floating top plate together form the second odor breathing chamber; a second gas connection port is formed on the second breathing chamber wall between the lower port of the bag-type diaphragm and the second exhaust-type floating top plate, connecting the second odor breathing chamber with the gas gap; the second odor breathing chamber floating top plate floats up and down according to the amount of odor gas in the second odor breathing chamber, thereby regulating the odor gas pressure in the gas gap without odor gas leakage.

2. The aerated wastewater tank with a built-in accordion-type telescopic diaphragm according to claim 1, characterized in that, The first exhaust floating roof has a plurality of odor vents.

3. An aerated wastewater tank with a built-in accordion-type telescopic diaphragm according to claim 1, characterized in that, The first odor breathing chamber is connected to an external odor collector via an odor collection pipe that passes through the lower part of the first breathing chamber wall. The odor collection pipe is equipped with a gas compressor for collecting gaseous materials generated by the volatilization of sewage and gas from the air inlet.

4. An aerated wastewater tank with a built-in accordion-type telescopic diaphragm according to claim 1, characterized in that, The second type of exhaust floating roof has a number of odor vents.

5. An aerated wastewater tank with a built-in accordion-type telescopic diaphragm according to claim 1, characterized in that, The lower part of the second odorous breathing chamber is connected to an external gaseous material collector through a gaseous material collection pipe that penetrates the wall of the second breathing chamber. A gas compressor is installed on the gaseous material collection pipe to collect gaseous materials generated by sewage and gas from the air inlet.

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