CN113309196A - Method and device for improving suction lift of vacuum drainage system - Google Patents
Method and device for improving suction lift of vacuum drainage system Download PDFInfo
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- CN113309196A CN113309196A CN202110639510.3A CN202110639510A CN113309196A CN 113309196 A CN113309196 A CN 113309196A CN 202110639510 A CN202110639510 A CN 202110639510A CN 113309196 A CN113309196 A CN 113309196A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 254
- 239000007788 liquid Substances 0.000 claims description 20
- 238000005273 aeration Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000001877 deodorizing effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention discloses a method and a device for improving the suction lift of a vacuum drainage system, wherein a sewage discharge pump (2) is used for controlling the sewage amount in a sewage tank (1); controlling the air pressure in the sewage tank (1) by using a vacuum pump (3); the sewage tank (1) is connected with the lifter (7) by using a vacuum sewage pipe (6), a vacuum sewage suction pipe (73) and an interface valve (71), and a sewage suction port of the vacuum sewage suction pipe (73) enters the lifter (7); sewage is discharged into the lifter (7) by the sanitary ware (8), then the interface valve (71) is opened to enable the sewage tank (1) to be communicated with the lifter (7), air is sucked into the vacuum sewage suction pipe (73) above the sewage suction port of the vacuum sewage suction pipe (73) below the interface valve (71), and the sewage in the lifter (7) is discharged into the sewage tank (1).
Description
Technical Field
The invention relates to the technical field of vacuum drainage systems, in particular to a method and a device for improving the suction lift of a vacuum drainage system.
Background
The vacuum drainage system generally comprises sanitary ware, a lifter, a sewage tank, a vacuum pump, a sewage discharge pump, a vacuum sewage pipe, an interface valve and a control system, wherein in the vacuum drainage system, the vacuum pump controls the negative pressure in the sewage tank to be maintained within a certain range, generally ranging from-0.05 MPa to-0.07 MPa, the lifter is connected with the sewage tank through the vacuum sewage pipe, the interface valve is arranged on the vacuum sewage pipe, sewage discharged by the sanitary ware flows into the lifter through a gravity pipeline, when the liquid level height in the lifter reaches a certain value (generally 2/3 of the height in the lifter), the interface valve is controlled to be opened by a liquid level detection system in the lifter, the sewage in the lifter is pumped into the sewage tank through the vacuum sewage pipe, a liquid level sensor is arranged in the sewage tank, when the water level in the sewage tank reaches a preset value, the sewage discharge pump is automatically started to pump the sewage out to an outdoor sewage well, and finishing a drainage process.
When the negative pressure value in the sewage tank is 0.07Mpa, the maximum vertical height of the negative pressure in the sewage tank to the sewage suction stroke in the lifter can reach 7m, if the vertical suction stroke exceeds 7m, the method generally adopted in the industry is to delay the closing time of an interface valve, and when the liquid level in the lifter is lower than the suction inlet of a vacuum sewage pipe in the suction process, the vacuum sewage pipe sucks gas, the solid phase, the liquid phase and the gas phase are fully mixed, the density is reduced, and therefore the suction stroke of the system is improved. However, the technical scheme has no operability in the actual application process, and the reason is that the delay closing time of the interface valve is influenced by factors such as the pressure value in the sewage tank, the suction height, the length of the vacuum sewage pipe, the size of the vacuum sewage pipe, the laying mode of the vacuum sewage pipe and the like, the pressure value in the sewage tank is changed within a certain range, the opening time of the interface valve is too long, and the economic efficiency is lost due to too much suction air, so that the debugging period of one lifter usually needs several days, and when a plurality of lifters (particularly more than dozens) are driven by one system, the lifter cannot be debugged, and the operability is lacked. Moreover, if the vacuum sewer pipe is filled with plunger-like sewage before the interface valve is opened, when the interface valve is opened, the sewage in the vacuum sewer pipe and the vacuum in the sewage tank immediately form balance, the liquid level in the lifter is not low, and the vacuum sewer pipe cannot suck air, so that the system is stopped. Therefore, the current vacuum drainage system can only be applied to long-distance sewage transmission in a suction range.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method and a device for improving the suction lift of a vacuum drainage system, which improve the suction lift of the vacuum drainage system and enable the application scene of the vacuum drainage system to be wider.
A method for improving the suction lift of a vacuum drainage system comprises the steps of controlling the sewage quantity in a sewage tank by using a sewage pump; controlling the air pressure in the sewage tank by using a vacuum pump; connecting the sewage tank and the riser using a vacuum sewage pipe, a vacuum sewage suction pipe, and an interface valve; the sewage suction port of the vacuum sewage suction pipe enters the lifter; and discharging sewage into the lifter by the sanitary ware, then opening the interface valve to communicate the sewage tank with the lifter, sucking air into the vacuum sewage suction pipe below the interface valve and above a sewage sucking port of the vacuum sewage suction pipe, and discharging the sewage in the lifter into the sewage tank.
Preferably, the amount of air sucked by the vacuum sewage suction pipe per unit time is controlled during the process of sucking air in the vacuum sewage suction pipe.
A device for improving the suction lift of a vacuum drainage system comprises a sewage tank, a sewage discharge pump, a vacuum sewage pipe, a lifter, sanitary ware, an interface valve, a vacuum sewage suction pipe and an air compensation valve, wherein the sewage discharge pump is connected with the sewage tank, the sewage discharge pump can suck sewage in the sewage tank, the vacuum pump is connected with the sewage tank, the vacuum pump can control the air pressure in the sewage tank, the sanitary ware is communicated with the lifter and can discharge the sewage into the lifter, one end of the vacuum sewage pipe is connected with the sewage tank, the other end of the vacuum sewage pipe is connected with the interface valve, a sewage suction port of the vacuum sewage suction pipe enters the lifter, the other end of the vacuum sewage suction pipe is connected with the interface valve, an air compensation port is formed in the vacuum sewage suction pipe and is positioned below the interface valve, and the air compensation port is positioned above a sewage suction port of the vacuum sewage suction pipe, the air supplementing valve is connected at the air supplementing opening, and the vacuum sewage suction pipe below the interface valve and above the sewage suction opening of the vacuum sewage suction pipe can suck air through the air supplementing valve.
Preferably, the interface valve further comprises a vacuum valve, two ends of the vacuum valve are respectively connected with the sewage tank and the interface valve through vacuum power pipes, a liquid level detection system is arranged in the lifter and can control the opening and closing of the vacuum valve, and the opening of the vacuum valve provides power for the opening of the interface valve.
Preferably, the gulp valve includes the valve body, it has inlet port and venthole to open on the valve body, inlet port and venthole intercommunication, the venthole communicates with the gulp mouth, is provided with the regulating unit on the valve body, the regulating unit can regulate and control the inspiratory air quantity of vacuum sewage suction pipe in the unit interval.
Preferably, the regulating unit includes spring, regulation post, threaded rod and regulation handle, the valve pocket has in the valve body, the valve pocket divide into left valve pocket and right valve pocket, and left valve pocket is located between inlet port and the venthole, and right valve intracavity mounting spring, regulation post are located right valve pocket, and the left part of regulation post is the toper, and the spring housing is established on adjusting the post, and the left end of adjusting the post can get into left valve pocket in, and the left and right motion of regulation post can be opened left valve pocket completely, the part is opened and is closed completely, and threaded connection has the threaded rod on the valve body, is connected with the regulation handle on the threaded rod, and the regulation handle contacts with the regulation post, and the regulation handle can promote the regulation post motion.
Preferably, the exhaust end of the vacuum pump is connected with a deodorization device.
Preferably, the item of sanitary ware is connected to the lifter by a gravity conduit.
Preferably, the effective ventilation sectional area of the gulp valve is set to be 0-80mm2In the meantime.
The invention has the beneficial effects that: in the technical scheme, firstly, the sewage amount in the sewage tank is controlled by using a sewage pump; controlling the air pressure in the sewage tank by using a vacuum pump; connecting the sewage tank and the riser using a vacuum sewage pipe, a vacuum sewage suction pipe, and an interface valve; when the sanitary ware discharges the sewage into the lifter; opening the interface valve to communicate the sewage tank with the lifter, and discharging sewage in the lifter into the sewage tank; air is sucked in the vacuum sewage suction pipe below the interface valve; the method can reduce the density of a three-phase mixture in the vacuum sewage suction pipe by regulating and controlling the air quantity sucked by the vacuum sewage suction pipe in unit time in the process of sucking air by the vacuum sewage suction pipe, thereby improving the suction lift of a vacuum drainage system.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the position A in FIG. 1;
fig. 3 is a schematic structural diagram of the water replenishing valve.
In the attached figure, 1-sewage tank, 2-sewage pump, 3-vacuum pump, 4-deodorization device, 5-vacuum power pipe, 6-vacuum sewage pipe, 7-lifter, 8-sanitary ware, 9-gravity pipeline, 71-interface valve, 72-aeration valve, 73-vacuum sewage suction pipe, 76-vacuum valve, 721-valve cavity, 722-spring, 723-air inlet, 724-adjusting column, 725-air outlet, 726-adjusting handle, 728-valve body.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1
The embodiment provides a method for improving the suction lift of a vacuum drainage system, which comprises the following steps of controlling the sewage amount in a sewage tank 1 by using a sewage pump 2; controlling the air pressure in the sewage tank 1 by using a vacuum pump 3; the sewage tank 1 and the lifter 7 are connected using the vacuum sewage pipe 6, the vacuum sewage suction pipe 73, and the interface valve 71; the sewage suction port of the vacuum sewage suction pipe 73 enters the lifter 7; the sanitary fixture 8 discharges sewage into the lifter 7, the interface valve 71 is opened to communicate the sewage tank 1 with the lifter 7, and the vacuum sewage suction pipe 73 above the sewage suction port of the vacuum sewage suction pipe 73 below the interface valve 71 sucks air into the sewage tank 1 to discharge the sewage in the lifter 7.
The amount of air sucked into the vacuum sewage suction pipe 73 per unit time is controlled in the process of sucking air into the vacuum sewage suction pipe 73, and by using the method, the suction lift of the vacuum drainage system can be improved, and the specific principle refers to the following embodiments.
Example 2
The embodiment provides a device for improving the suction lift of a vacuum drainage system, which comprises a sewage tank 1, a sewage pump 2, a vacuum pump 3, a vacuum sewage pipe 6, a lifter 7, a sanitary ware 8, an interface valve 71, a vacuum sewage suction pipe 73 and an air make-up valve 72, wherein the sewage pump 2 is connected with the sewage tank 1, the sewage pump 2 can suck sewage in the sewage tank 1, the vacuum pump 3 is connected with the sewage tank 1, the vacuum pump 3 can control the air pressure in the sewage tank 1, the sanitary ware 8 is communicated with the lifter 7, the sanitary ware 8 can discharge the sewage into the lifter 7, one end of the vacuum sewage pipe 6 is connected with the sewage tank 1, the other end of the vacuum sewage pipe 6 is connected with the interface valve 71, a sewage suction port of the vacuum sewage suction pipe 73 enters the lifter 7, the other end of the vacuum sewage suction pipe 73 is connected with the interface valve 71, an air make-up port is formed on the vacuum sewage suction pipe 73, the air supply port is located below the interface valve 72, the air supply port is located above the dirt suction port of the vacuum sewage suction pipe 73, the air supply port is connected with the air supply valve 72, and the vacuum sewage suction pipe 73 located below the interface valve 71 and above the dirt suction port of the vacuum sewage suction pipe 73 can suck air through the air supply valve 72.
The vacuum valve 76 is further included in the present embodiment, both ends of the vacuum valve 76 are respectively connected to the sewage tank 1 and the interface valve 71 through the vacuum power pipe 5, a liquid level detection system is provided in the lifter 7, the liquid level detection system can control the opening and closing of the vacuum valve 76, and the opening of the vacuum valve 76 provides power for the opening of the interface valve 71.
The air make-up valve 72 in this embodiment includes a valve body 728, the valve body 728 is provided with an air inlet 723 and an air outlet 725, the air inlet 723 is communicated with the air outlet 725, the air outlet 725 is communicated with the air make-up port, and the valve body 728 is provided with an adjusting unit capable of adjusting and controlling the amount of air sucked by the vacuum sewage suction pipe 73 in unit time.
In this embodiment, the adjusting unit includes spring 722, regulation post 724, threaded rod and regulation handle 726, valve chamber 721 has in the valve body 728, the valve chamber 721 divide into left valve chamber and right valve chamber, left valve chamber is located between inlet hole 723 and the venthole 725, right valve intracavity fixed spring 722, adjust post 724 is located right valve chamber, the left part of adjusting post 724 is the toper, the spring 722 cover is established on adjusting post 724, the left end of adjusting post 724 can get into left valve chamber in, adjust post 724 side-to-side movement can be opened the left valve chamber completely, local opening and totally enclosed, threaded connection has the threaded rod on the valve body 728, be connected with regulation handle 726 on the threaded rod, adjust handle 726 and adjust the contact of post 724, adjust the handle and can promote the motion of adjusting post 724.
The exhaust end of the vacuum pump 3 in this embodiment is connected to a deodorizing device 4.
The sanitary fixture 8 is in this embodiment connected to the riser 7 by a gravity conduit 9.
The working principle is as follows: as shown in fig. 1-3, the vacuum pump 3 is controlled by the control system to pump air from the sewage tank 1, deodorize the air by the deodorization device 4 and discharge the air, and maintain the negative pressure value in the sewage tank 1 within the upper and lower limit ranges (generally set to-0.05 to-0.07 Mpa), the sewage pump 2 is controlled by the control system to pump and discharge the sewage in the sewage tank 1 to the sewage well, and maintain the sewage in the sewage tank 1 between the high and low liquid levels, and the control system is the prior art and is not described herein for redundant details; the vacuum power pipe 5 and the vacuum sewage pipe 6 are in a negative pressure state, the sanitary ware 8 is connected with the lifter 7 through the gravity pipe 9, sewage generated by the sanitary ware 8 flows into the lifter 7 through the gravity pipe 9, when the water level in the lifter 7 reaches a specified liquid level, the liquid level detection system in the lifter 7 works to open the vacuum valve 76, air in the sewage tank 1 is discharged to the interface valve 71 through the vacuum power pipe 5 at the moment, the interface valve 71 is opened, the vacuum sewage tank 6 is communicated with the vacuum sewage suction pipe 73, so that the sewage tank 1 is communicated with the lifter 7, under the action of negative pressure, the sewage in the lifter 7 is sucked to the sewage tank 1 through the vacuum sewage suction pipe 73 and the vacuum sewage pipe, and when the water depth in the lifter 7 is sucked to a low liquid level, the vacuum mechanical valve 76 is closed, the interface valve 71 is closed, and sewage suction is stopped.
According to the negative pressure water absorption principle, the absorption distance of the sewage in the sewage tank 1 for collecting the sewage in the lifter 7 is H1+ H2+ H3+ H4.
In the first case, when the negative pressure of the wastewater tank 1 is-0.07 Mpa and the aeration valve 72 is closed, the interface valve 71 is opened, and wastewater in the lifter 7 can be sucked into the wastewater tank 1 only when Hx is smaller than 7 m.
In the second case, when the negative pressure of the wastewater tank 1 is-0.07 Mpa, the aeration valve 72 is in an open state, that is, the vacuum wastewater suction pipe 73 at the position of the aeration valve 72 is in communication with the atmosphere. When the interface valve 71 is closed, air connected to the atmosphere is present in the vacuum sewage suction pipe 73 below the interface valve 71 and above the liquid level of the lifter 7; or when sewage is sucked into the vacuum sewage suction pipe 73, the position of the air supply valve 72 is lower than that of the vacuum sewage suction pipe 73, the plunger-shaped sewage is filled in the vacuum sewage suction pipe 73, and the pressure at the vacuum sewage suction pipe 73 at the position of the air supply valve 72 is lower than that of the sewage suction port of the vacuum sewage suction pipe 73; therefore, air is sucked into the vacuum sewage suction pipe 73 through the air make-up valve 72 and sewage in the lifter 7, and in the vacuum sewage suction pipe 73, the air, the sewage and solid impurities in the sewage are fully mixed under the action of the viscosity of the sewage in the movement process, and the whole density is less than that of water, so that when the negative pressure value in the sewage tank 1 is-0.07 Mpa, Hx can be sucked into the sewage tank 1 under the condition of more than 7m, and the suction stroke is lifted.
It should be noted that the ventilation of the aeration valve 72 is much smaller than that of the vacuum sewage suction pipe 73, and the effective ventilation cross-sectional area of the aeration valve 72 is set to 0-80mm2Meanwhile, the effective sectional area of the vacuum sewage suction pipe 73 is not less than 1850mm2By adjusting the effective ventilation cross-sectional area of the air supply valve 72, 7m<Hx<At 14m, the sewage in the lifter 7 can be sucked into the sewage tank 1.
In the third case, when 7m < Hx <14m, the negative pressure value in the sewage tank 1 is-0.07 Mpa, the aeration valve 72 is in the closed state, the vacuum sewer piping 6 is in the negative pressure state, the interface valve 71 is opened, sewage in the lifter 7 is sucked into the vacuum sewer piping 6 through the vacuum sewer suction port 75, and when the suction distance reaches 7m, the system stops operating because the atmospheric pressure in the lifter 7 is 7m water column + the negative pressure in the vacuum sewer piping 6. At this time, the air make-up valve 72 is opened, the pressure inside the vacuum sewage suction pipe 73 at the position of the air make-up valve 72 is lower than the pressure at the sewage suction port of the vacuum sewage suction pipe 73, therefore, air enters the vacuum sewage pipe 6 through the air make-up valve 72, is fully mixed with the liquid water in the vacuum sewage pipe 6 and the solid impurities in the sewage, the overall density is lower than the density of water, the suction stroke of the vacuum drainage system is improved, after the three-phase mixed liquid in the vacuum sewage pipe 6 is sucked to the sewage tank 1, the pressure at the sewage suction port of the vacuum sewage suction pipe 73 is unbalanced, and the sewage in the lifter 7 is continuously sucked until the sewage in the lifter 7 reaches a low liquid level.
Since the larger the effective ventilation cross-sectional area of the aeration valve 72 is, the more the amount of air enters the vacuum sewage suction pipe 73, the larger the ratio of air to sewage is, the lower the overall density is, the higher the suction lift is, but at the same time, the lower the sewage suction efficiency will be.
In this embodiment, the valve body 728 is provided with an adjusting unit which can adjust and control the amount of air sucked by the vacuum sewage suction pipe 73 per unit time. Thus, the amount of air entering the vacuum sewer piping 73 can be adjusted according to actual conditions, thereby achieving a reasonable value for ensuring suction lift and suction efficiency.
The specific working principle is that the adjusting column 724 is pushed to move by rotating the position of the adjusting handle 726, the position of the adjusting handle 726 is controlled, the distance that the left end of the adjusting column 724 enters the left valve cavity is further controlled, the opening degree of the left valve cavity is controlled by the conical adjusting column 724, and therefore the effective ventilation sectional area of the air compensating valve 72 is adjusted.
The cooperation that sets up the liquid level control system in vacuum valve 76 and the riser 7 in this embodiment can realize the automation of soil pick-up process and open, and the liquid level control system in the riser 7 includes but not limited to pneumatics, machinery, automatically controlled, can set up level sensor in the riser 7 for example, sets up the singlechip in the system simultaneously, and vacuum valve 76 adopts the vacuum solenoid valve, and level sensor gives the singlechip with information transfer, and the opening and closing of singlechip control vacuum solenoid valve.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. A method for improving the suction lift of a vacuum drainage system is characterized in that a sewage discharge pump (2) is used for controlling the sewage amount in a sewage tank (1); controlling the air pressure in the sewage tank (1) by using a vacuum pump (3); the sewage tank (1) is connected with the lifter (7) by using a vacuum sewage pipe (6), a vacuum sewage suction pipe (73) and an interface valve (71), and a sewage suction port of the vacuum sewage suction pipe (73) enters the lifter (7); sewage is discharged into the lifter (7) by the sanitary ware (8), then the interface valve (71) is opened to enable the sewage tank (1) to be communicated with the lifter (7), air is sucked into the vacuum sewage suction pipe (73) above the sewage suction port of the vacuum sewage suction pipe (73) below the interface valve (71), and the sewage in the lifter (7) is discharged into the sewage tank (1).
2. The method for improving suction lift of a vacuum sewage system according to claim 1, wherein an amount of air sucked by the vacuum sewage suction pipe (73) per unit time is controlled during the suction of air in the vacuum sewage suction pipe (73).
3. The device for improving the suction stroke of the vacuum drainage system is characterized by comprising a sewage tank (1), a sewage pump (2), a vacuum pump (3), a vacuum sewage pipe (6), a lifter (7), sanitary wares (8), an interface valve (71), a vacuum sewage suction pipe (73) and an air supplementing valve (72), wherein the sewage pump (2) is connected with the sewage tank (1), the sewage pump (2) can suck sewage in the sewage tank (1), the vacuum pump (3) is connected with the sewage tank (1), the vacuum pump (3) can control the air pressure in the sewage tank (1), the sanitary wares (8) are communicated with the lifter (7), the sanitary wares (8) can discharge sewage into the lifter (7), one end of the vacuum sewage pipe (6) is connected with the interface valve (1), and the other end of the vacuum sewage pipe (6) is connected with the interface valve (71), the utility model discloses a vacuum sewage suction pipe, including vacuum sewage suction pipe (73), air make-up valve (72), the mouth of inhaling of vacuum sewage suction pipe (73) gets into in lifting mechanism (7), the vacuum sewage suction pipe (73) other end is connected with interface valve (71), it has the air make-up mouth to open on vacuum sewage suction pipe (73), the air make-up mouth is located interface valve (72) below, the air make-up mouth department is connected air make-up valve (72), vacuum sewage suction pipe (73) above the mouth of inhaling of interface valve (71) below and vacuum sewage suction pipe (73) can be through air make-up valve (72) inhaled air.
4. A device for increasing the suction lift of a vacuum drainage system according to claim 3, further comprising a vacuum valve (76), wherein the vacuum valve (76) is connected at its two ends to the sewage tank (1) and the interface valve (71) through a vacuum power pipe (5), respectively, and a liquid level detection system is provided in the lifter (7), wherein the liquid level detection system can control the opening and closing of the vacuum valve (76), and the opening of the vacuum valve (76) provides power for the opening of the interface valve (71).
5. The device for improving the suction lift of the vacuum drainage system according to claim 4, wherein the air supply valve (72) comprises a valve body (728), an air inlet hole (723) and an air outlet hole (725) are formed in the valve body (728), the air inlet hole (723) is communicated with the air outlet hole (725), the air outlet hole (725) is communicated with the air supply hole, and an adjusting unit is arranged on the valve body (728) and can adjust and control the air quantity sucked by the vacuum sewage suction pipe (73) in unit time.
6. The device for improving the suction stroke of the vacuum drainage system as claimed in claim 5, wherein the adjusting unit comprises a spring (722), an adjusting column (724), a threaded rod and an adjusting handle (726), the valve body (728) is internally provided with a valve cavity (721), the valve cavity (721) is divided into a left valve cavity and a right valve cavity, the left valve cavity is positioned between an air inlet hole (723) and an air outlet hole (725), the right valve cavity is internally provided with the spring (722), the adjusting column (724) is positioned in the right valve cavity, the left part of the adjusting column (724) is conical, the spring (722) is sleeved on the adjusting column (724), the left end of the adjusting column (724) can enter the left valve cavity, the adjusting column (724) can completely open, partially open and completely close the left valve cavity by moving left and right, the threaded rod is connected to the valve body (728) through a thread, the adjusting handle (726) is connected to the valve body (728), and the adjusting handle (726) is in contact with the adjusting column (724), the adjusting handle (726) can push the adjusting column (724) to move.
7. A device for increasing the suction lift of a vacuum drainage system according to claim 6, wherein the exhaust end of the vacuum pump (3) is connected with a deodorizing device (4).
8. A device for increasing the suction lift of a vacuum drainage system according to claim 7, wherein the sanitary ware (8) is connected to the lifter (7) by means of a gravity conduit (9).
9. A device for increasing suction lift of a vacuum drainage system as claimed in claim 3, wherein an effective ventilation sectional area of the aeration valve (72) is set to 0-80mm2In the meantime.
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| CN101397951A (en) * | 2008-10-31 | 2009-04-01 | 隆鑫工业有限公司 | Adjustable manual air compensating valve |
| CN201568585U (en) * | 2009-09-11 | 2010-09-01 | 玉环县和成铜业有限公司 | Gas flow control valve |
| CN104652573A (en) * | 2013-11-18 | 2015-05-27 | 中国科学院生态环境研究中心 | Vacuum drainage system technology and device used for collecting municipal wastewater |
| CN104131615A (en) * | 2014-07-16 | 2014-11-05 | 武汉市政环卫机械有限公司 | Method for increasing vacuum suction dirt depth and vacuum dirt suction vehicle capable of increasing suction depth |
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Application publication date: 20210827 |