CN219950671U

CN219950671U - Small biochemical tank

Info

Publication number: CN219950671U
Application number: CN202321110096.8U
Authority: CN
Inventors: 梁良
Original assignee: Chengdu Lear Environmental Technology Development Co ltd
Current assignee: Chengdu Lear Environmental Technology Development Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-11-03
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses a small biochemical tank, which relates to the technical field of sewage treatment and comprises a tank body, a decanter, a liquid level transmitter, an aeration device, a control box and an air source box. The tank body is internally provided with a cross beam, and the liquid level transmitter, the decanter and the aeration device are all arranged on the cross beam, wherein an aeration disc of the aeration device is positioned at the bottom of the tank body; the air source box comprises a shell, a bottom plate and a large cover, the large cover is connected to the top of the tank body, the bottom plate is arranged above the large cover, and the shell is arranged at the top of the bottom plate in a detachable mode; the shell or the bottom plate is provided with an air inlet, an air valve and a plurality of air pumps are arranged in the shell, the air valve is connected with the decanter, and one air pump is connected with the aeration device. The scheme has small volume, can be directly placed on the ground, and the air pump can be installed near the water surface, so that the air supply amount of aerobic biochemical treatment and the service life of the air pump under the rated working condition are ensured to the maximum extent, and the permanent occupation of the conventional sewage treatment facilities buried underground on cultivated lands is greatly reduced; the installation is convenient, the equipment failure rate is low, and the maintenance and overhaul are convenient.

Description

Small biochemical tank

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a small biochemical tank.

Background

The biochemical tank is internally provided with a decanter, a liquid level transmitter, an aeration device and the like, the outside of the biochemical tank is also provided with an air pump, a control box and the like, when the liquid level in the tank is in a high position, the aeration device is used for supplying oxygen to the tank, after aeration precipitation, the decanter is used for discharging supernatant, so that sewage treatment is essentially a cycle of five procedures of water inlet, aeration, precipitation, water discharge and standby, in the cycle, the control box is used for starting a corresponding procedure at a specific time, and the air pump is used for providing enough air for the biochemical tank. Because the tank body of the biochemical tank in the prior art is buried underground, and the air pump and the control box are arranged on the ground, the air pipe between the air pump and the tank body is longer, resistance loss is formed by the air in the air pipe, the resistance loss often causes the air pump to work under the pressure exceeding the rated working condition, the biochemical air supply amount is smaller than the rated air amount, and the service life is greatly reduced; the buried sewage treatment device in the prior art belongs to permanent facilities, occupies large cultivated area, is often made of plastic materials, has short service life, and can pollute the land after being abandoned; potential safety hazards exist to a certain extent; when waterlogging or mountain torrents occur in local areas, a large amount of sediment can be accumulated in the tank body, so that equipment cannot run.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the small biochemical tank which is small in size, can be directly placed on the ground, greatly reduces the permanent occupation of the sewage treatment equipment buried underground on the cultivated land on the basis of ensuring the use effect and the integral attractive and durable performance, is convenient to install, has low equipment failure rate, and is convenient to maintain and overhaul.

In order to achieve the object of the utility model, the following scheme is adopted:

a small biochemical tank comprises a tank body, a decanter, a liquid level transmitter, an aeration device, a control box and an air source box.

The tank body is internally provided with a cross beam, and the liquid level transmitter, the decanter and the aeration device are all arranged on the cross beam, wherein an aeration disc of the aeration device is positioned at the bottom of the tank body;

the air source box comprises a shell, a bottom plate and a large cover, the large cover is connected to the top of the tank body, the bottom plate is arranged above the large cover, and the shell is arranged at the top of the bottom plate in a detachable mode;

the shell or the bottom plate is provided with an air inlet, an air valve and a plurality of air pumps are arranged in the shell, the air valve is connected with the decanter, and one air pump is connected with the aeration device.

Further, the air inlet is arranged on the bottom plate, and air filtering cotton is arranged at the air inlet.

Further, still include the protection pipe, the crossbeam is located to the protection pipe, is equipped with first inner tube and second inner tube in the protection pipe, and first inner tube diameter is less than the second inner tube, and first inner tube bottom passes through reducing union coupling second inner tube, and the liquid level transmitter hangs in locating first inner tube, and the monitoring head card of liquid level transmitter is in reducing pipe, second inner tube.

Further, the bottom of the protection pipe is provided with a T-shaped three-way pipe, and the aeration disc is arranged below the T-shaped three-way pipe.

Further, the tank body is internally provided with a water inlet pipe, the side wall of the tank body is provided with a water inlet, and the water inlet is communicated with the water inlet pipe through a Y-shaped three-way pipe.

Further, the aeration device is connected to the cross beam through the U-shaped clamp, a pipe sleeve is fixedly arranged on the rod body of the aeration device, a pipe sleeve is slidably arranged on the corresponding position of the water inlet pipe, and the two pipe sleeves are connected together through the short pipe.

Further, the gas stripping and sludge discharging device is connected to the cross beam, the other gas pump of the gas source box is connected to the gas stripping and sludge discharging device, the side wall of the tank body is provided with a sludge discharging port, and the sludge discharging port is communicated with the gas stripping and sludge discharging device through a sludge discharging pipe.

Furthermore, the bottom of the tank body is provided with three limiting grooves, and the bottoms of the decanter, the water inlet pipe and the air stripping mud discharging device are respectively inserted into the corresponding limiting grooves.

Further, the control box is arranged on the outer wall of the tank body.

Further, the bottom of the tank body is provided with a stirring device.

The utility model has the beneficial effects that:

1. the biochemical tank has good weather resistance and long service life; the whole structure is compact, the occupied area is small, pit digging is not needed, and the device is placed on the ground, so that the permanent occupation of the ground is avoided; compared with the prior art, the air source box can be arranged at the top of the tank body, and the utility model not only greatly shortens the length of the air pipe, but also is convenient to install or maintain.

2. The liquid level transmitter is suspended in the protective tube, and the monitoring head of the liquid level transmitter is clamped in the reducer tube and the second inner tube, so that the liquid level transmitter can be effectively prevented from colliding with the tank body in the transportation or installation process, and the liquid level transmitter is convenient to replace and maintain; the bottom of the protection pipe is provided with a T-shaped three-way pipe, the aeration disc is positioned below the T-shaped three-way pipe, the T-shaped three-way pipe plays a role in buffering, the phenomenon that a liquid level transmitter is impacted by a gas-liquid mixed flow in the aeration process is avoided, signals are inaccurate, and the fault rate is increased.

3. The upper half section of the body of rod portion of aeration equipment passes through U type card to be connected in the crossbeam, and U type cartoon is fixed through the nut, and the lower half section of body of rod portion is fixed to be set up a pipe box, and the inlet tube corresponds the position and slides and set up a pipe box, and two pipe boxes pass through the nozzle stub to be connected, note that body of rod portion and inlet tube are not the intercommunication, just simple through two pipe boxes link together, the advantage of this kind of mode: the aeration device is firmly installed, the aeration process is quite stable, and the aeration disc is convenient to take out in the later stage.

Drawings

FIG. 1 is a diagram showing the internal structure of a biochemical tank according to an embodiment;

FIG. 2 is a diagram showing a second internal structure of the biochemical tank according to the embodiment;

FIG. 3 is a top view of the interior of a biochemical tank according to an embodiment;

FIG. 4 is a mounting block diagram of a level transmitter of an embodiment;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic diagram of the connection of the air source box to the tank in an embodiment;

FIG. 7 is a schematic view of a first embodiment of an aeration device;

fig. 8 is a schematic view of a second installation mode of the aeration device.

Detailed Description

As shown in fig. 1, 4 and 6, the embodiment provides a small biochemical tank, which comprises a tank body 1, a decanter 2, a liquid level transmitter 31, an aeration device 4, a control box 7 and an air source box 5.

Specifically, a cross beam 11 is arranged in the tank body 1, two ends of the cross beam 11 are connected to the tank body 1 through bolts, a liquid level transmitter 31, the decanter 2 and the aerator 4 are connected to the cross beam 11 through flanges, and an aeration disc 41 of the aerator 4 is positioned at the bottom of the tank body 1. The air source box 5 comprises a shell 51, a bottom plate 52 and a large cover 53, wherein the large cover 53 covers the top of the tank body 1 and is fixedly connected through bolts, the bottom plate 52 is erected above the large cover 53, the shell 51 is arranged at the top of the bottom plate 52 in a detachable mode, and a plurality of detachable modes such as bolts or buckles are available. An air valve and two air pumps are arranged in the shell 51, the air valve is connected with the decanter 2, and one air pump is connected with the aeration device 4.

An air inlet is arranged on the shell 51 or the bottom plate 52, and air filter cotton can be arranged at the air inlet and used for filtering large particle dust in the air and blocking insects from entering the air source box 5 so as not to cause the failure of the air pump or the air valve. The air inlet is preferably arranged on the bottom plate 52, so that the air filter cotton can be hidden under the air source box 5, and the air filter cotton cannot be seen from the outside, thereby achieving an attractive effect.

The biochemical tank of the embodiment has compact internal structure, small occupied area and can be placed on the ground, and the permanent occupation of the land can be avoided. Compared with the prior art, the air source box 5 can be arranged at the top of the tank body 1, and the embodiment not only greatly shortens the length of the air pipe, but also is convenient to install or maintain. The control box 7 can be arranged on the outer wall of the tank body 1, and can be optionally placed on the ground around the biochemical tank.

Specifically, in the view of fig. 1, a threading hole 114, a water inlet 111 and a sludge discharge port 112 are sequentially provided from top to bottom on the left side of the tank body 1, and the threading hole 114 is used for passing through a wire; a water inlet pipe 13 is arranged in the tank body 1, a water inlet 111 is communicated with the water inlet pipe 13 through a Y-shaped three-way pipe, the water inlet 111 and the water inlet pipe 13 are used for injecting sewage into the tank body 11, and the effect of the Y-shaped three-way pipe is convenient for sewage to flow into the tank body 11; as shown in fig. 2 and 3, the tank 1 is internally provided with a gas-stripping mud discharging device 6, a mud discharging port 112 is communicated with the gas-stripping mud discharging device 6 through a mud discharging pipe 61, and the mud discharging port 112 is used for discharging mud; as shown in fig. 1, a water outlet 113 is arranged on the right side of the tank body 1, and the water outlet 113 is connected with the decanter 2 for discharging supernatant liquid in the tank body 1.

Specifically, still be equipped with the protection pipe 32 in the biochemical jar, the protection pipe 32 passes through flange joint in crossbeam 11, and the mounting means of liquid level transmitter 31 is as follows: as shown in fig. 4 and 5, a first inner tube 321 and a second inner tube 322 are disposed in the protective tube 32, the bottom of the first tube 321 is connected with the second inner tube 322 through a reducer tube, the diameter of the first inner tube 321 is smaller than that of the second inner tube 322, the liquid level transmitter 31 is suspended in the first inner tube 321, and when the liquid level transmitter 31 is straightened, the monitoring head of the liquid level transmitter 31 is just clamped in the reducer tube and the second inner tube 322, in this way, the liquid level transmitter 31 can be effectively prevented from colliding with the tank 1 in the transportation or installation process, and the replacement and maintenance are also facilitated.

Specifically, aeration equipment 4 includes the body of rod portion and the aeration dish 41 of L type, and protection tube 32 below is located to aeration dish 41, in order to alleviate the impact of rivers to liquid level transmitter 31 in the aeration process, this embodiment is equipped with T type three-way pipe in the bottom of protection tube 32, and protection tube 32 is connected to the vertical upward of vertical section of this T type three-way pipe, and the horizontal section level setting of T type three-way pipe, aeration dish 41 are located T type three-way pipe below, so play the cushioning effect at the aeration process T type three-way pipe, avoid forming the impact to liquid level transmitter 31 at the aeration process gas-liquid mixture flow, cause the signal inaccurate, the fault rate increases.

More specifically, compared with other components in the tank 1, the aeration device 4 is firmly installed, and the aeration disc 41 is convenient to take out in the later period, so the aeration device 4 is installed in the following modes: first, the upper half section of the body of rod portion is connected in crossbeam 11 through U type card 42, and U type card 42 is fixed through the nut, and this kind of mode is in the aeration process, and aeration equipment 4 has the problem of rocking about. Second, as shown in fig. 7, a pipe sleeve is fixedly arranged on the lower half section of the rod body, a pipe sleeve is slidably arranged at a corresponding position of the water inlet pipe 13, and the two pipe sleeves are connected in a loose joint manner, so that in order to fix the aeration device 4 and take out the aeration disc 41, a bracket must be additionally arranged on the cross beam 11, and then the upper half section of the rod body can be connected to the bracket by utilizing the U-shaped card 42. Third, as shown in fig. 8, a pipe sleeve is fixedly arranged on the lower half section of the rod body, a pipe sleeve is slidably arranged at the corresponding position of the water inlet pipe 13, the two pipe sleeves are connected in a loose joint manner, if the cross beam 11 is not additionally provided with a bracket, the upper half section of the rod body is still directly connected to the cross beam 11 by using the U-shaped card 42, and then the aeration disc 41 cannot be taken out in the later stage. Fourth, as shown in fig. 1 and 3, in a preferred embodiment, the upper half section of the rod body is connected to the cross beam 11 through a U-shaped clip 42, the U-shaped clip 42 is fixed through a nut, the lower half section of the rod body is fixedly provided with a pipe sleeve, the water inlet pipe 13 is slidably provided with a pipe sleeve at a corresponding position, the two pipe sleeves are connected through a short pipe, when the aeration disc 41 is taken out, the U-shaped clip 42 is detached firstly, then the aeration disc 41 is rotated out from the lower side of the protection tube 32 by taking the water inlet pipe 13 as a pivot, and then the aeration device 4 is lifted upwards, so that the method has the advantages that: the aeration device 4 is very firm in installation, very stable in the aeration process, can not shake left and right, and is convenient for taking out the aeration disc 41 at a later stage.

More specifically, in order to facilitate locating the position and quickly locating the decanter 2, the water inlet pipe 13 and the air-lift mud discharging device 6, three limiting grooves are arranged at the bottom in the tank body 1, and the bottoms of the decanter 2, the water inlet pipe 13 and the air-lift mud discharging device 6 are respectively inserted into the corresponding limiting grooves.

The biochemical tank is used for sewage treatment: firstly, sewage is injected into the tank body 1 through the water inlet 111 and the water inlet pipe 13; the liquid level transmitter 31 monitors the liquid level height in the tank body 1, and stops water injection when the liquid level reaches a preset high level; oxygen is supplied to the tank body 1 by the aeration device 4; after aeration is finished, precipitating for a period of time; after the precipitation is finished, the air-stripping sludge discharge device 6 is used for discharging the sludge in the tank body 1 through the sludge discharge pipe 61 and the sludge discharge port 112; then the supernatant liquid in the tank body 1 is discharged by the decanter 2; enter standby.

Preferably, in this embodiment, a stirring device is disposed at the bottom of the tank 1. Under the condition that the discharge standard has higher requirements on total phosphorus, the tank body 1 needs to be stirred by a stirring device in the water inlet process or after water inlet, and then biological phosphorus removal can be realized during aeration. In the case where the discharge standard has a high requirement for total nitrogen, the aeration may be performed after stirring for a certain period of time after completion of aeration, and then precipitation may be performed.

The above embodiments are merely for illustrating the technical ideas and features of the present utility model, and are not meant to be exclusive or limiting. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model.

Claims

1. The small biochemical tank comprises a tank body (1), a water decanter (2), a liquid level transmitter (31), an aeration device (4) and a control box (7), and is characterized by further comprising an air source box (5);

a cross beam (11) is arranged in the tank body (1), and a liquid level transmitter (31), a water decanter (2) and an aeration device (4) are all arranged on the cross beam (11), wherein an aeration disc (41) of the aeration device (4) is positioned at the bottom of the tank body (1);

the air source box (5) comprises a shell (51), a bottom plate (52) and a large cover (53), wherein the large cover (53) is connected to the top of the tank body (1), the bottom plate (52) is erected above the large cover (53), and the shell (51) is arranged at the top of the bottom plate (52) in a detachable mode;

the shell (51) or the bottom plate (52) is provided with an air inlet, an air valve and a plurality of air pumps are arranged in the shell (51), the air valve is connected with the decanter (2), and one air pump is connected with the aeration device (4).

2. The small biochemical tank according to claim 1, wherein the air inlet is provided in the bottom plate (52), and air filter cotton is provided in the air inlet.

3. The small biochemical tank according to claim 1, further comprising a protection tube (32), wherein the protection tube (32) is arranged on the cross beam (11), a first inner tube (321) and a second inner tube (322) are arranged in the protection tube (32), the diameter of the first inner tube (321) is smaller than that of the second inner tube (322), the bottom of the first inner tube (321) is connected with the second inner tube (322) through a reducing tube, the liquid level transmitter (31) is suspended in the first inner tube (321), and a monitoring head of the liquid level transmitter (31) is clamped in the reducing tube and the second inner tube (322).

4. A small biochemical tank according to claim 3, characterized in that the bottom of the protective tube (32) is provided with a T-shaped tee, and the aeration disc (41) is arranged below the T-shaped tee.

5. The small biochemical tank according to claim 1, wherein a water inlet pipe (13) is arranged in the tank body (1), a water inlet (111) is arranged on the side wall of the tank body (1), and the water inlet (111) is communicated with the water inlet pipe (13) through a Y-shaped three-way pipe.

6. The small biochemical tank according to claim 5, wherein the aeration device (4) is connected to the cross beam (11) through a U-shaped clip (42), a pipe sleeve is fixedly arranged on the rod body of the aeration device (4), a pipe sleeve is slidingly arranged on the corresponding position of the water inlet pipe (13), and the two pipe sleeves are connected together through a short pipe.

7. The small biochemical tank according to claim 5, further comprising a gas stripping and sludge discharging device (6), wherein the gas stripping and sludge discharging device (6) is connected to the cross beam (11), the other air pump of the air source tank (5) is connected to the gas stripping and sludge discharging device (6), a sludge discharging port (112) is arranged on the side wall of the tank body (1), and the sludge discharging port (112) is connected with the gas stripping and sludge discharging device (6) through a sludge discharging pipe (61).

8. The small biochemical tank according to claim 7, wherein the bottom in the tank body (1) is provided with three limit grooves, and the bottoms of the decanter (2), the water inlet pipe (13) and the air stripping sludge discharging device (6) are respectively inserted into the corresponding limit grooves.

9. The small biochemical tank according to claim 1, characterized in that the control box (7) is arranged on the outer wall of the tank body (1).

10. The small biochemical tank according to claim 1, wherein the bottom of the tank body (1) is provided with a stirring device.