CN217549096U - Automatic sand discharging device of grit chamber - Google Patents
Automatic sand discharging device of grit chamber Download PDFInfo
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- CN217549096U CN217549096U CN202221586162.4U CN202221586162U CN217549096U CN 217549096 U CN217549096 U CN 217549096U CN 202221586162 U CN202221586162 U CN 202221586162U CN 217549096 U CN217549096 U CN 217549096U
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- sand
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- grit chamber
- sand discharge
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Abstract
The utility model relates to an automatic sand discharging device of grit chamber, including the grit chamber, the sand-water separator, pneumatic gate valve, five-way solenoid valve, pneumatic one-way choke valve, the liquid level of grit chamber is higher than the liquid level of sand-water separator, the sand discharge pipe is installed to the bottom of grit chamber, the export of sand discharge pipe is located the top of sand-water separator, pneumatic gate valve installs on the sand discharge pipe, the A gas outlet of five-way solenoid valve and pneumatic gate valve's first hose intercommunication for the gas port that connects, the B gas outlet of five-way solenoid valve and pneumatic one-way choke valve's hose intercommunication for the gas outlet, pneumatic gate valve's second connects the gas port and pneumatic one-way choke valve's hose intercommunication for the air inlet. The beneficial effects are that: the device belongs to gravity sand discharge system, installs pneumatic gate valve on the sand discharge pipe, makes pneumatic gate valve realize opening soon and close the regulative mode slowly through five-way solenoid valve and the cooperation of pneumatic one-way choke valve, can reach the effect of unpowered sand discharge according to the gravity principle, can effectively reduce the free energy consumption of grit chamber, improves sand discharge efficiency.
Description
Technical Field
The utility model relates to a sewage treatment field especially relates to an automatic sand discharging device of grit chamber.
Background
The grit chamber is a sewage treatment pretreatment production section, mainly generates centripetal force by sewage cyclone to precipitate grit at the bottom, and then extracts the grit at the bottom to carry out a sand-water separation link.
At present, a sand pump and a gas stripping sand pump are often used in each sewage treatment plant to pump water and sand together to separate the water and the sand.
Gas stripping mode: compressed air flows into the position near a water inlet of the sand discharge pipe, and the air generates lifting force in water due to no pressure when entering the sand discharge pipe, so that the water and sand are driven to move upwards, and the sand water is discharged simultaneously. According to the method, when the highest position of the gas inlet pipeline loses the pushing effect, the rear-section drain pipe is easy to generate sand accumulation to block.
Sand pump mode: and introducing a pipeline through an opening at the bottom of the tank, and pumping the sand-water mixed solution into a sand-water separator by using a sand pump to perform sand-water separation. The method has the defects that the bottom of the grit chamber is easy to be compacted due to the sediment of the sand, the sand pump cannot pump sand, a sand pumping pipeline is easy to be blocked, and an impeller of the sand pump is easy to wear.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above problem that prior art exists, provide an automatic sand discharging device of grit chamber.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
the utility model provides an automatic sand discharging device of grit chamber, includes grit chamber, sand-water separator, pneumatic gate valve, five-way solenoid valve, pneumatic one way throttle valve, the liquid level of grit chamber is higher than the liquid level of sand-water separator, the sand discharge pipe is installed to the bottom of grit chamber, the export of sand discharge pipe is located the top of sand-water separator, pneumatic gate valve installs on the sand discharge pipe, the first hose intercommunication for the gas port that connects of the A gas outlet of five-way solenoid valve and pneumatic gate valve, the hose intercommunication is used with the gas outlet of pneumatic one way throttle valve to the B gas outlet of five-way solenoid valve, the second of pneumatic gate valve connects the gas port and hose intercommunication for the air inlet of pneumatic one way throttle valve.
Wherein the liquid level of the grit chamber is at least 3 meters higher than that of the sand-water separator.
The utility model has the advantages that: the device belongs to gravity sand discharge system, installs pneumatic gate valve on the sand discharge pipe, makes pneumatic gate valve realize opening soon and closing the regulation mode slowly through five-way solenoid valve and the cooperation of pneumatic one-way choke valve, can reach the effect of unpowered sand discharge according to the gravity principle, can effectively reduce the free energy consumption of grit chamber, simultaneously, can effectively avoid impeller wearing and tearing, the problem that sand discharge pipeline blockked up, air stripping pressure is little, improves sand discharge efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a schematic structural view of an automatic sand discharging device of the present invention;
the reference numbers in the figures illustrate: the device comprises a grit chamber 1, a sand-water separator 2, a pneumatic gate valve 3, a five-way electromagnetic valve 4, an air inlet 41, an air outlet A42, an air outlet B43, a pneumatic one-way throttle valve 5, an air inlet 51, an air outlet 52, an air source triple piece 6, a sand discharge pipe 7, a water pumping pipe 8 and a water pumping pump 9.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the automatic sand discharge device for the grit chamber comprises a grit chamber 1, a sand-water separator 2, a pneumatic gate valve 3, a five-way electromagnetic valve 4, a pneumatic one-way throttle valve 5 and an air source triplet 6, wherein the liquid level of the grit chamber 1 is higher than that of the sand-water separator 2, a sand discharge pipe 7 is installed at the bottom of the grit chamber 1, the outlet of the sand discharge pipe 7 is positioned above the sand-water separator 2, the pneumatic gate valve 3 is installed on the sand discharge pipe 7, an air outlet A42 of the five-way electromagnetic valve 4 is communicated with a first air inlet of the pneumatic gate valve 3 through a hose, an air outlet B43 of the five-way electromagnetic valve 4 is communicated with an air outlet 52 of the pneumatic one-way throttle valve 5 through a hose, and a second air inlet of the pneumatic gate valve 3 is communicated with an air inlet 51 of the pneumatic one-way throttle valve 5 through a hose. The air inlet of the air source triple piece 6 is connected with a high-pressure air source, the high-pressure air source is an air compressor, the air compressor generates air with the pressure of 0.4MPa, the air outlet of the air source triple piece 6 is communicated with the air inlet 41 of the five-way electromagnetic valve 4 through a hose, and the air source triple piece 6 is utilized to remove water, regulate pressure, lubricate and oil the high-pressure air from the air compressor to obtain high-quality compressed air. The bottom of the sand-water separator 2 is provided with a water suction pipe 8, the water suction pipe 8 is provided with a water suction pump 9, and accumulated water at the bottom of the sand-water separator 2 is discharged by the water suction pump 9.
The slow closing principle of the pneumatic gate valve 3 is as follows: when the five-way electromagnetic valve 4 is out of power, air inflates the upper part of the cylinder of the pneumatic gate valve 3 through the air inlet 41 and the air outlet 42 of the five-way electromagnetic valve 4, the piston of the cylinder of the pneumatic gate valve 3 moves downwards, air at the lower part of the cylinder of the pneumatic gate valve 3 is extruded outwards, and extruded air flows out through the throttling channel of the pneumatic one-way throttling valve 5 to form slow valve closing action.
Pneumatic gate valve 3 quick-open principle: after the coil of the five-way electromagnetic valve 4 is electrified, the valve core changes, air enters the pneumatic one-way throttle valve after passing through the air inlet 41 and the air outlet 43 of the five-way electromagnetic valve 4, the air directly pushes away the check valve in the pneumatic one-way throttle valve 5 to enter the lower part of the cylinder of the pneumatic gate valve 3 to move the cylinder piston of the pneumatic gate valve 3 upwards, the air is not regulated and controlled by the flow in the pneumatic one-way throttle valve 5, the lower part of the cylinder of the pneumatic gate valve 3 is rapidly inflated to enable the cylinder piston to rapidly move upwards, and the air in the upper part of the cylinder of the pneumatic gate valve 3 passes through the electromagnetic valve to the point A of the five-way electromagnetic valve 4 and then is discharged. The quick opening action of the valve is formed.
Fast opening and slow closing: the pneumatic gate valve 3 is set to be opened quickly, so that gravitational potential energy is released instantly, water flow quickly passes through the sand discharge pipe 7 to take away sand and mud at the bottom of the grit chamber 1, the instantaneously released gravitational potential energy can effectively dredge accumulated sand in a pipeline, and the problem of blockage of the sand discharge pipe 7 is solved. Set to slow speed when pneumatic gate valve 3 closes, because close too fast, can produce powerful water hammer, fragile pipe fitting, so equipment closes at a slow speed, makes rivers reduce gradually, reaches the purpose of better buffering, protection equipment and pipe fitting.
The liquid level of the grit chamber 1 is at least 3 m higher than that of the sand-water separator 2, so that the water and sand at the bottom of the grit chamber 1 are automatically discharged into the sand-water separator 2 by the power formed by enough water level pressure difference between the grit chamber 1 and the sand-water separator 2.
The sand-water separator is characterized by further comprising a PLC, wherein the control signal output end of the PLC is in communication connection with the signal receiving end of the sand-water separator 2 and the signal receiving end of the five-way electromagnetic valve 4 respectively, and automation and remote control are facilitated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an automatic sand discharging device of grit chamber which characterized in that: including grit chamber, sand-water separator, pneumatic gate valve, five-way solenoid valve, pneumatic one way throttle valve, the liquid level of grit chamber is higher than the liquid level of sand-water separator, the sand discharge pipe is installed to the bottom of grit chamber, the export of sand discharge pipe is located the top of sand-water separator, pneumatic gate valve installs on the sand discharge pipe, the first hose intercommunication for the gas port that connects of the A gas outlet of five-way solenoid valve and pneumatic gate valve, the hose intercommunication is used with pneumatic one way throttle valve's the gas outlet to the B gas outlet of five-way solenoid valve, pneumatic gate valve's second connects the gas port and hose intercommunication for pneumatic one way throttle valve's air inlet.
2. The automatic sand discharge device according to claim 1, wherein: the air source triple piece is characterized by further comprising an air source triple piece, an air inlet of the air source triple piece is connected with a high-pressure air source, and an air outlet of the air source triple piece is communicated with an air inlet of the five-way electromagnetic valve through a hose.
3. The automatic sand discharge device according to claim 2, wherein: the high-pressure air source is an air compressor.
4. The automatic sand discharge device according to claim 1, wherein: the sand-water separator is characterized by further comprising a PLC, and the control signal output end of the PLC is in communication connection with the signal receiving end of the sand-water separator and the signal receiving end of the five-way electromagnetic valve respectively.
5. The automatic sand discharge device according to claim 1, wherein: the liquid level of the grit chamber is at least 3 meters higher than that of the sand-water separator.
6. The automatic sand discharge device according to claim 1, wherein: a water suction pipe is installed at the bottom of the sand-water separator, and a water suction pump is installed on the water suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586162.4U CN217549096U (en) | 2022-06-23 | 2022-06-23 | Automatic sand discharging device of grit chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586162.4U CN217549096U (en) | 2022-06-23 | 2022-06-23 | Automatic sand discharging device of grit chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217549096U true CN217549096U (en) | 2022-10-11 |
Family
ID=83503270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221586162.4U Active CN217549096U (en) | 2022-06-23 | 2022-06-23 | Automatic sand discharging device of grit chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217549096U (en) |
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2022
- 2022-06-23 CN CN202221586162.4U patent/CN217549096U/en active Active
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