MXPA97008259A - Mechanism controller with breather collector for drainage transport system to va - Google Patents

Abstract

The present invention relates to an apparatus for preventing the flooding of water from the control valves and the sensor used to regulate the operation of the vacuum interface valve in a sump discharge vacuum sewer system. A float valve operates in accordance with the wastewater lever in a sump pit, and communicates atmospheric pressure to the sensor and control valves while the wastewater lever is below a predetermined limit, but closes the way through the waters residuals once the waste water lever exceeds the predetermined limit. A pressure recovery valve can also be operatively connected to the float valve that discharges excess hydrostatic pressure residues into the sump pit into the atmosphere.

Description

MECHANISM CONTROLLER WITH BREATHER COLLECTOR FOR VACUUM DRAINAGE TRANSPORT SYSTEM BACKGROUND OF THE INVENTION The present invention relates generally to a vacuum drainage transport system for transporting drainage collected in a vent to a downstream collector vessel maintained under the influence of subatmospheric vacuum or pressure, and more specifically to a controller mechanism. operated by pressure differentials for a system of this kind that is free of externally mounted breathing tubes, and which is protected from water accumulation and hydrostatic pressure build-up. Drainage systems are commonly used to transport drainage and other waste liquids from an origin, such as a residential or commercial establishment, to a collection container, where the material is treated for subsequent disposal. The drainage is transported within a network of underground piping. If the pipeline can be placed downhill continuously, the drainage can be transported to the collection container by gravity. However, one or more pumping stations are often nsary to push the drainage by positive pressure through the elevated pipe, to avoid rocks, pipes and other underground barriers, or to reduce the depth at which the pipes need to be buried. a system completely oriented to gravity. In many instances, a positive pressure drainage system is used, where the pipes are placed without considering the topographic characteristics, and rather based entirely on the pressure pumps located at all drainage inlet points to drive the drainage to the collector vessel. Prevacuum drainage systems are becoming increasingly popular, where drainage at atmospheric pressure is moved by a differential pressure through a transport conduit maintained under vacuum or at subatmospheric pressure by means of a vacuum pump operatively connected to the collector vessel. . As shown in full in Figure 1, the vacuum drainage system 10 comprises a manhole 12 buried below ground level 13 to which a plurality of gravity lines 14 emanating from drainage origins 16 are connected. The external gravity vent 18 placed on land ensures that the drain reaches the collector well 12 at atmospheric pressure. Placed on the ground level, at a certain distance from the previous one there is a vacuum collecting station containing a collecting container 20 maintained under vacuum or at subatmospheric pressure by means of vacuum pumps. The vacuum collecting container 20 is operatively connected to the collecting well 12 by a vacuum transport conduit 22. The vacuum transport conduit can be placed in various configurations. For example, it can be supplied with "bags" in which the drainage is collected to form a paper that completely fills the cross-perforation of the duct. The drainage paper is moved by differential pressure through the duct in an integral condition. U.S. Patent Nos. 3, 115, 148 issued to Liljendahl, and number 3, 730, 884 issued to Burns et al., Disclose these "plug flow" systems. Preferably, the portion of conduit leading to each bag or low point is sloped, so that the low point is not filled with drainage at the end of the drainage transport cycle, and instead a vacuum or subatmospheric pressure equalized through the duct network. As taught in U.S. Patent No. 4,179,371 issued to Foreman et al, a drainage / air mixture runs in this "two-phase flow" system through the conduit during the transport cycle, so that the drainage can travel a greater distance than would be possible with a plug-flow system.

An upper sieve 24 of a manifold 12 is connected to the side walls thereof in sealed relation in order to provide an airtight container. Positioned on the top panel 24 is the valve well 26, which is entered at ground level by a cover 28. Located between the valve well 26 is the vacuum interface valve 30. Examples of interface valves can be found in the patents of the United States number 4,171,853 issued in the name of Cleaver et al., and numbers 5,078,174 and 5,082,238 issued to Grooms et al., as well as USSN 07 / 829,742, 07 / 967,454, and 08 / 008,190 owned by the assignee of the present invention. As shown generally in Figure 2, it comprises a bifurcated conduit 32 with an inlet 34 which is operatively connected to the manhole 12 via the suction pipe 36, and an outlet 38, operatively connected to a vacuum transport conduit. 22. Placed inside the valve compartment 40 is piston 42, which can be conical in shape. An elastomeric seat 44 is attached to the end of the piston 42, and cooperates with a valve stop 46 of the bifurcated conduit 32 to regulate the passage of the drain through the interface valve 30. Securing the upper part of the valve compartment 40 to the lower compartment 48 and an upper compartment 50, which is divided by an elastomer diaphragm 52. Lower shell 48 is always maintained at atmospheric pressure by an externally mounted breather tube 54 and an atmospheric hose 56. Piston 44 is connected to the bowl piston 58 by the piston shaft 60, and a spring 62 positioned between the interior of the piston cup 58 and the upper part of the upper compartment 50 tilts the valve seat 44 against the valve stop 46 to close the interface valve 30 when the upper compartment 50 is at atmospheric pressure. However, a top compartment 50 is changed to a vacuum or subatmospheric pressure condition, the diaphragm 52 and consequently the piston cup 58, the piston shaft 60, the piston 42 and the valve seat 44, moves away from the valve stop 46 by differential pressure to open interface valve 30 to initiate the drain transport cycle. The sensor controller 66 is used to supply a vacuum / subatmospheric or atmospheric pressure condition to the upper compartment 50 to open or close the interface valve 30 in response to the drainage level in the manhole 12. The structure of the sensor-controller 66 it is described more specifically in U.S. Patent No. 4,373,838 issued in the name of Foreman et al. However, as shown in Figures 3-4, the structure and mode of operation is generally as follows: a plurality of body elements 68, 70, 72, 74, and 76 cooperate to form a hydrostatic pressure chamber 78, a sensor chamber 79, the chamber 80, the chamber 81, the vacuum chamber 82, and the valve chamber 84. The chambers 78 and 79 are divided by an elastomer diaphragm 86. The chambers 79 and 80 communicate through the port 88, which can be closed by means of a lever valve inclined by spring 90 (see Figure 3). The chambers 80 and 81 are divided by an elastomer diaphragm 92 to which is attached a piston roller 94 which extends through the chamber 81, chamber 82 and into the chamber 84. The vacuum chamber 82 is maintained under vacuum or pressure subatmospheric via a vacuum inlet port 96 and a vacuum hose 98 which is attached to the vacuum transport conduit 22. A tank 100 may be interposed in the vacuum hose 98 to prevent the drain from entering the vacuum chamber 82. The atmospheric inlet port 102 transmits atmospheric pressure to the sensor-controller 66 via a hose 56 connected to the external breathing tube 54. The atmospheric pressure in turn, it is transported to the sensor chamber 79 via the inlet 104 and the atmospheric conduit 106. At the other end of the piston roller 94 is connected a 3-way valve seat 108 made of a plastic material. The bevel 110 in the valve seat 108 is positioned between the elastomeric seals 112 and 114 that communicate the vacuum and atmospheric and subatmospheric pressure of the vacuum chamber 82 and the atmospheric inlet port 102, respectively, to the valve chamber 84. The sensor-controller 66 appears in the closed position in Figure 3. The hose 116 operatively connected to the sensor tube 37 communicates the hydrostatic pressure level in the manhole 12 to the chamber 78 through the inlet port 118. thus, the sensor chamber 79 is at atmospheric pressure. The vacuum / subatmospheric pressure condition of the vacuum chamber 82 is communicated with the chambers 80 and 81 by a vacuum conduit 120. The visor 110 of the valve seat 108 closes the vacuum vent 112, and opens the atmospheric vent 114 to allow passing the atmospheric pressure into the valve chamber 84, and consequently into the upper valve compartment 50 through the pressure vent 122. Once the hydrostatic pressure communicated to the chamber 78 rises to a predetermined level, the diaphragm 86 will have contact with the lever valve 90 which in turn is activated to open the port 88 so that the vacuum / subatmospheric pressure in the chamber 80 is replaced with the atmospheric pressure condition of the sensor chamber 79 (see Figure 4). This creates a pressure differential on the diaphragm 92, which pushes the piston roller 94 so that the bevel of the valve 110 closes the atmospheric vent 114 and opens the vacuum vent 112, where the subatmospheric vacuum / pressure is supplied to the vacuum chamber 84, and through the pressure vent 122 towards the upper valve compartment 50 to open the interface valve 30 to initiate the drain transport cycle. Meanwhile, vacuum / subatmospheric pressure in the vacuum chamber 82 leaks through vacuum conduit 120 towards the chamber 80 to replace the atmospheric pressure there, and once it reaches a sufficient level, the process is reversed to return the sensor-controller 66 back to the closed position shown in Figure 3 to complete the transport cycle of sewer system. However, it was discovered that the snorkel that is on land 54 has several disadvantages. First, unlike the gravity vent 18 which can be conveniently placed against the construction 16 in an isolated state, the valve well 26 is typically located on the outside, in the yard or field, so that the associated vent tube 54 does not it can be easily hidden, and therefore it is aesthetically unpleasant. Second, given its open and unprotected position, the respirator tube on the ground 54 may be subject to vandalism or damage by mowers, cars, etc. This disturbs the reliable supply of atmospheric pressure to the sensor-controller 66 and to the interface valve 30 required for its proper operation. Accordingly, U.S. Patent No. 4,691,731 issued to Grooms et al. teaches a valve manifold / well structure 130, as shown in Figure 5 where the snorkel 54 is removed, and instead the atmospheric pressure supplied by the manifold 12. More specifically, the sensor tube 37 is secured to the top of the manifold 24 by an assembly of sleeve 132 and collar 134. The collar 134 has three nozzles 136, 138, and 140 that extend from there (see Figure 5a). The snorkel 142 is connected to the nozzle 136 and the atmospheric inlet port 102 of the sensor-controller 66 (Figures 3 and 4), thus allowing the atmospheric pressure contained in the collection well 12 to communicate freely with the sensor-controller . Ventilation tube 144, in turn, is attached to nozzle 138 and compartment 48 in interface valve 30, thereby supplying atmospheric pressure therein. Finally, the drain pipe 146 can be attached to the lower compartment 48 and the nozzle 140, ensuring that any moisture condensing within the lower compartment 48 can be easily drained by the sensor tube 37 to the collecting well 12. Low normal operating conditions, This "respirator in the well" provides atmospheric pressure to the sensor-controller 66 and the interface valve 30 without the need for the respirator 54 that is above the ground level. However, problems arise if the vacuum / subatmospheric pressure condition within the empty transport product 22 decreases to a low vacuum condition. Referring to Figures 3-4, once the hydrostatic condition supplied to the chamber 78 by the sensor tube 37 and the pressure tube 116 reaches a predetermined level as the drain accumulates in the collection well 12, the diaphragm 86 is inclined to open the leveling valve 90, and the chamber 80 converted to atmospheric pressure (i.e., vacuum 0), while the chamber 81 is under vacuum. The pressure differential over the diaphragm of the valve 92 is too small to overcome the counterforce exerted by the spring 95 to move the piston roller 94 and the valve head 108 sufficiently to complete the closing of the atmospheric vent 114. Likewise , the low vacuum pressure that passes through the vacuum vent 112 and the pressure vent 122 towards the upper compartment 50 is insufficient to open the interface valve 30. Not only the drain can not be evacuated from the connector well 12 by the drain pipe. suction 36 and the closed interface valve 30 towards the vacuum transport conduit 22, but also the drain continues to collect in the collector. Once the level of drainage in the collecting well 12 rises to a sufficient level, the positive pressure in the latter pushes the drain through the breathing tube 142 towards the atmospheric inlet port 102 of the sensor and a controller 66. The atmospheric pressure in the sensor valve chamber 79 will temporarily prevent the drainage from entering through the atmospheric tube 106. However,, once the leveling valve 90 is open when the sensor-controller valve is started, the atmospheric pressure leaks from the sensor valve chamber 79 towards the chamber 80. Likewise, the atmospheric pressure of the sensor valve chamber must escape 79 through the vacuum conduit 120, the vacuum hose 98 and the tank 100 to the vacuum transport conduit 22. By reducing the atmospheric pressure condition in the sensor valve chamber 79, the drain can enter there and the rest of the the sensor-controller cameras through the aforementioned routes to ensure that the sensor-controller 6 can not operate properly unless it is manually drained by maintenance personnel. Accordingly, U.S. Patent No. 4,691,731 also discloses a vent-collector valve that can be interposed within the vacuum hose 98, and is closed by a low vacuum condition to prevent communication of the low vacuum with the controller- sensor 66 which can cause the atmospheric pressure in the sensor valve chamber 79 to leak, and thereby compromising the sealed nature of the chamber 79 that otherwise prevents the drain from leaving the sensor-controller 66. However, it was discovered that there are several problems that can seriously impede the alteration of the sensor-controller 66 and the interface valve 30, and that are not rectified by the vent-manifold valve. First, the vent-manifold valve is initially set to close at the correct time once a low vacuum pressure condition arises. For example, if 5 inches of vacuum is required to operate the sensor-controller 66, and the vent-collector valve is set to close to 6 inches of vacuum, then the system works. However, without time the vent-collector valve begins to close at 4 inches of vacuum, then it is not activated at the precise moment as the vacuum pressure between the system 10 is decreased, and the low vacuum can be communicated to the sensor -controller 66 to prevent the drain from entering, in spite of the presence of the collector-ventilation valve. Second, even if the collector-vent valve functions properly, once the vacuum in the system is fully restored, the sensor-controller 66 will be activated to the open position in response to the high hydrostatic pressure condition and stored in the chamber. 78. Once the atmospheric pressure in the process is consumed, it will cause the drainage to be pushed through the snorkel 142 to the sensor-controller 66. The respirator tube 142 is connected to the top of the sensor tube 37 that is extends through the upper well manifold 24. If the seal between the sleeve 132 and the upper part 24 fails, then the atmospheric pressure leaks from the collecting well 12 to the valve well 26. This allows it to be collected at a drain in the collector hole 12 if the low vacuum condition that leaves the sensor and the controller 66 inoperative and the interface valve 30 through the collector-vent valve persists. nte a scheduled period of time. Once the total vacuum is restored, and the sensor and controller 66 are activated, sufficient atmospheric pressure may leak inside the sensor-controller 66 to collect drainage, as described above. Another problem arises if gravity line 14 is properly installed or settles over time to create a drop. If the transverse perforation of the sunken portion is followed by drainage, then the atmospheric pressure of the gravity ventilation tube 18 can not be communicated to the manhole 12 to pass to the sensor and a controller 66 and the interface valve 30. This could prevent that the sensor-controller and the interface valve operate properly. Likewise, if the hydrostatic pressure accumulates sufficiently in the collector well 12, then it will be this, and not the atmospheric pressure, that can be communicated with the atmospheric inlet port 102 of the sensor-controller 66. Thus, the hydrostatic pressure would be communicated to both ends of the sensor-controller 66, and then to the chambers 78 and 79, which would render sensor-controller 66 totally inoperative. SUMMARY OF THE INVENTION In accordance with the foregoing, it is an object of the present invention to provide a control mechanism for a vacuum drainage transport system with collector respiration that prevents that the drainage reaches there, being inoperative for prolonged conditions of pressure or under vacuum.

Another object of the present invention is to provide a control mechanism that prevents the hydrostatic pressure within the collector weight from communicating with both ends of the control mechanism to render it inoperative. Yet another objective of the present invention is to provide a modified control mechanism that is relatively simple in design. Other objects of the present invention, in addition to those previously specified, will be apparent to those skilled in the art by the following disclosure. Briefly, the invention is directed to provide a device for preventing the accumulation of water in the sensor and controller valves used to regulate the operation of the vacuum interface valve in a vacuum system with collector breathing. A flushing valve operates in accordance with the drainage level in a collection well and communicates atmospheric pressure to the sensor and controller valves while the drainage level is below a predetermined limit, but closes the drain path once the level Drain exceeds the predetermined limit. A pressure relief valve can also be operatively connected to the float valve, leaving excess accumulation of hydrostatic pressure in the manhole to the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagrammatic representation of a prior art vacuum drainage transport system containing an interface valve, sensor and controller, and a breather tube above ground level. Figure 2 is a cross-sectional view of a prior art interface valve in the closed position. Figure 3 is a cross-sectional view of a sensor and a prior art controller in the inactive position. Figure 4 is a cross-sectional view of a sensor and a prior art controller in the activated position. Figure 5 is a diagrammatic representation of a vacuum drainage transport system of the prior art containing an interface valve, sensor and a controller and a respirator system within the well. Figure 5a is a planar view of the respirator of the collar of the respirator system within the well of Figure 5 seen from the line 5a-5a. Figure 6 is a diagrammatic representation of the vacuum drainage system control mechanism of the present invention containing a float valve, and a pressure relief valve operatively connected to the sensor and a controller. Figure 7 is a cross-sectional view of the float valve of the pressure relief valve of the present invention. Figure 8 is a diagrammatic representation and a gravity tube with a submerged portion capped therein; Y Figure 9 is a diagrammatic representation of the vacuum drainage system control mechanism installed in a buffer tank. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The manifold / valve well assembly 150 of the present is illustrated in Figure 6. The drainage is transported from a hearth, conventional settlement, etc., 152, to the collection well 154 by a conduit. gravity transport 156. The gravity ventilation pipe 158 extending above ground level introduces atmospheric pressure if the gravity duct 156, and hence the collecting pit 154. The drainage is removed from the collecting well by the discharge pipe 160 and an open vacuum interface valve 162 during the drain transport cycle, as is known in the industry, and at the same time the interface valve 162 is closed to complete the transport cycle, and the drain can no longer pass through this. A sensor and controller 164 in accordance with the structure of U.S. Patent No. 4,373,838 is provided for operating the interface valve, which is preferably designed in accordance with U.S. Patent No. 5., 082,238, and the same internal component numbers previously designated in Figures 2-4 will be used. Note that a separate sensor and control valves can be replaced by the integrated sensor and controller 164, as taught by a U.S.S.N. 07 / 829,742, 07 / 967,454 and 08 / 008,190, property of the assignee of the present invention. Vacuum / subatmospheric pressure within the vacuum transport conduit 166 is communicated by the vacuum hose 168 to the vacuum inlet 96 in the sensor and a controller 164. A tank 170 with a check valve can be interposed in the vacuum line 168 in accordance with U.S. Patent No. 4,171,853 to prevent residual drainage within the vacuum transport duct 166 from entering the sensor and a controller 164. The sensor tube 172 extends through the top of the collection well 160 towards the valve well 174 by a sleeve 176. The plug 168 is placed on the top of the sensor tube 172 which provides a projection 182 for operatively connecting the sensor tube 172 to the input port 118 of the sensor a contractor 164 by means of the hose pressure 182 in order to supply hydrostatic pressure from the manifold well 154. The float valve 250 of the present invention appears in the fi Figure 9. Comprises a cylindrical shaped compartment plus 252 made of a suitable material, such as a 4-inch PVC pipe. The compartment 252 is open at the bottom, and has mounted on its upper surface a 4-inch flat plug 254 also made of PVC plastic. Attached to an aperture 252 in the cap 254 is a slider adapter 258 with a body portion 260 that depends on the inner compartment 252, and the collar 262 positioned adjacent the cap 254. The slider adapter 258 has a bore 264 consisting of a region cylindrical upper portion 266, leading to another cylindrically shaped lower region 268 of larger diameter with a step 267 located at the transition point. A cylindrically shaped shaft seal 270 made of an elastomeric material is placed on the lower surface of a sliding adapter 258, and at least partially on the surface of a region 268 of the perforation 264. The surface of the upper cylindrical perforation 268 has string, and is bolted together with the strings is one end of a device "t" 272 made of a plastic material like NYLON®. Secured at the other end of the device at "t" 272 is a breathing "t" 274 with projections 276 and 278 extending therefrom. Secured to the third end with rope 280 of the "t" device 272 is a NYLON® 282 locking boss and a check valve assembly 284. Placed inside the compartment 252 is the float 286 made of a 3-inch Schedule PVC pipe. with both ends closed by welding. The float 282 is provided with a material 288 to increase its weight. For example, if the float 286 is 8, 5/8 of an inch long, then it should weigh at least 1 kg. Upon securing the outer surface of the float 286 there is a plurality of PVC projections 290 used to guide movement to the float 286 on the X axis of the compartment 252. Mounted with the upper surface 292 of the float 286 by the screw 294 is the conical shaped seat 296 , which can be produced from a plastic material such as DELRIN®. The external dimensions of the seat 296 must be such that the seat is joined by sealing the inner surface of the shaft seal 270. Finally, a plurality of screws 298 protrude through the compartment side wall 252 toward the interior volume to prevent the float 286 is separated from the float valve compartment 252.

The float valve 250 is mounted to the roof of the manhole 52 so that the plug 254, the "t" 272 device, the breather "t" 274 and the check valve 284 are positioned within the valve well 174, and so as not to are in contact with the drain. A plurality of perforations 300 in a portion of the wall of the compartment 252 within the manhole 254 allow atmospheric air to enter the float valve 250. The float 286 will rise due to the flotation forces within the compartment 252 according to the level of Drain in manifold pit 154 rises, but no case will fall below screw stops 298. When seat 296 is removed from shaft seal 270, atmospheric air inside the float valve can pass through the cylindrical bore. lower 268, upper cylindrical perforation 266, "t" device 272, breather "t" 274 and atmospheric hoses 302 and 304, respectively, toward atmospheric port 102 of the sensor and a controller 164, and lower compartment 48 of the interphase valve 162 to ensure proper operation. A condensation trap 306 (FIG. 6) is preferably interposed in the hose 302 to prevent condensed moisture from entering the sensor and a controller 164. Similarly, the perforations 300 serve to prevent atmospheric air from leaving the valve compartment. float 252, so that the float 286 can be forced upwardly into the compartment 252 to allow additional drainage into the manhole 154 as long as the sensor and a controller 164 and the interface valve 162 are inoperative during prolonged low vacuum conditions. Once the level of drainage within the collecting well 154 reaches a predetermined level, the seat 296 the float will penetrate the lower cylindrical region 268 of the bore 264 and the shaft seal 270 in sealing union so that the drainage can not Extract through the breather "t" 274 and the hose 302 once the sensor and a controller 164 is activated after the total vacuum is restored in the system. Once the total vacuum is restored and the sensor and a controller 164 open the interface valve 162 to evacuate the drain in the collection well 164, then the float 286 will fall according to the declining level of drainage. The seat 296 will be removed from the shaft seal 270 to again allow atmospheric air to enter the breathing "t" 274. The float valve 250 provides a time delay function remaining closed while the vacuum level is restored and starts the drainage evacuation. The float valve 250 will only be opened once the drain level falls to a predetermined level, so that atmospheric air, and no drain, can enter the "t" breather 274, hoses 312 and 304 and the sensor and a controller 164 and interface valve 162. As long as the atmospheric pressure is closed to the sensor and a controller 164 by float valve 250, at all atmospheric pressure in the valve chamber 84 they will leak through the exhaust vent 122. Once the total vacuum is restored in the system and communicated to the vacuum chamber 82, the sensor and a controller 164 is activated in response to the hydrostatic pressure level rise in the collection well 154, the vacuum pressure is it will leak through the vacuum vent 112, the atmospheric vent 114 and the atmospheric entry 102 again through the hose 302 and the "T" 274 towards the upper interior volume of the float valve compartment 2 52. Accordingly, the weight of the float 286 must be such that it can superimpose the vacuum pressure temporarily applied to its upper surface 292 so that the float 286 can fall in response to the level of drainage that decreases in the collecting well 154. The material 288 inside the float 286 ensures that this occurs. If the taxed line 156 develops a subsidence due to improper installation or settlement over time, it can be filled with drain 312, as shown in Figure 10, so that the atmospheric pressure can no longer be communicated through the snorkel 158 to the collection pit 154, and through the float valve 250 to the sensor and a controller 164 and the valve interphase 162. This could lead to a situation where the increased hydrostatic pressure passes through hoses 182 and 302 at both ends of the sensor and a controller 164, which will ensure that the sensor and a controller can not operate properly. Accordingly, the closing projection 282 and the check valve 284 are combined to form a pressure relief valve 285 that vent the hydrostatic pressure without causing damage above a predetermined level toward the valve well 174 to ensure that the sensor and a controller 164 may continue to operate the interface valve 162 in a normal manner. The figure does not show me the installation of the vacuum transport control system of drainage in a buffer tank 320 where similar elements have equal numbers. The installation and operation are the same as the manifold / valve well of Figure 6, except that the buffer tank is not a sealed system, and any gas can escape through the cover 322. Thus, no installation is necessary. a pressure relief valve on the "T" 274 of the float valve 250. While particular embodiments of the present invention were shown and described, it should be understood that the invention is not limited thereto, since many modifications can be made. Accordingly, the invention is contemplated to cover by the present application each and every one of the modifications that fall within the area of spirit and scope of the underlying basic principles disclosed and claimed herein.

Claims (15)

1. CLAIMS 1. A device for regulating the transport of drainage from a source to a transport conduit and associated collecting station normally maintained under vacuum or subatmospheric pressure, where the device comprises: a. a drainage accumulation receptacle installed underground and connected to the drainage source by a conduit to collect the drainage before discharging it to the transport conduit, b. the receptacle is adapted to connect with the conduit device communicating with an essentially remote atmospheric pressure source to maintain the receptacle before and after discharge generally at a pressure level above normal vacuum or sub-atmospheric pressure of the conveying conduit of drainage, c. a sensor operated by pressure differentials operatively communicating with the receptacle to establish atmospheric pressure or vacuum / subatmospheric communication as an output pressure condition, wherein the sensor device has a first condition inactivated, and a second condition activated which arises when the The collected drainage in the receptacle reaches a predetermined volume, wherein the vacuum or sub-atmospheric pressure is supplied insofar as the sensor device is in a condition, and where the atmospheric pressure is supplied while the other sensor device is in the other condition, where the atmospheric pressure is supplied by conduit devices in operative communication with the receptacle without open air or other air ducts protruding above ground level, a controller operated by pressure differentials operatively in communication with the condition of p output pressure supplied by the sensor to establish atmospheric pressure or vacuum / subatmospheric pressure communication as an output pressure condition, where the controlling device has a first condition and a second condition, where vacuum or subatmospheric pressure is supplied as long as the controlling device is in a condition, and where the atmospheric pressure is supplied insofar as the controlling device is in another condition, where the atmospheric pressure is supplied by a conduit device in operative communication with the receptacle without protruding an air vent or another conduit above ground level, e. duct devices that operatively connect the sensor device and the controlling device with the vacuum-subatmospheric pressure of the drain transport duct, f. a flow control device operated by pressure differentials operatively communicating with the output pressure condition supplied by the device and controller, where the device and flow control have an open condition to allow the passage of drain from the receptacle to the transport conduit and in this way initiating a drainage transport cycle, wherein the flow control device also has a closed condition to prevent the passage of drainage, thus ending the transport cycle, wherein the flow control device passes. of the open and closed conditions based on the pressure condition supplied by the control device, and g. atmospheric exhaust valve devices for inhibiting the passage of collected drainage into the receptacle through the conductive device to supply atmospheric pressure from the receptacle to the sensing device and the controlling device when the vacuum / subatmospheric pressure supplied to it via the vacuum conduit / Subatmospheric pressure rises above a predetermined minimum level.
2. 2. A drainage transport regulating device as specified in claim 1, wherein the atmospheric vent valve comprises: a. a compartment placed inside the receptacle, and fixed in relation to this, where the compartment is open at the bottom and which has a plug connected to the upper surface with a liquid seal and pressure tight, b. a breathing tube having an inlet and an outlet and connected with an opening in the compartment cap to provide exhaust at atmospheric pressure contained within the compartment to conductive devices connected to the sensing device and the controlling device; and c. devices for closing the breather inlet of the atmospheric vent valve when the drainage collected in the receptacle exceeds a predetermined volume.
3. 3. A drainage transport regulating device as specified in claim 2, wherein the device for closing the snorkel inlet comprises a float contained within the atmospheric vent valve compartment, wherein the float has a protruding seat that is extends from its upper surface that falls asleep with the inlet of the snorkel when the level of drainage in the receptacle rises above a predetermined level to prevent the passage of drainage through the inlet opening, and separates from the opening inlet once the drain is discharged from the receptacle by the flow control device when recovering the entire vacuum via the transport conduit.
4. 4. A drainage transport regulating device as specified in claim 3, further comprising the projection extending inwardly from the atmospheric exhaust valve compartment near its lower end to prevent separation of the float from the compartment once that the drainage level in the receptacle falls below the atmospheric exhaust valve.
5. A drainage transport regulating device as specified in claim 3, further extending projections outwardly from the float to guide axial movement of the float within the atmospheric vent valve compartment according to the level of drainage within the receptacle it rises and falls to ensure proper alignment between the outgoing seat and the snorkel inlet.
6. A drainage transport regulating device as specified in claim 3, further comprising an axle seal attached to the inlet surface of the snorkel to provide a better seal when joined with the seat protruding from the float.
7. A drainage transport regulating device as specified in claim 2, further comprising openings formed on one side of the atmospheric vent valve compartment to facilitate the passage of atmospheric air in and out of the compartment.
8. 8. A drainage transport regulating device as specified in claim 3, further comprising a material added to the interior of the sealed float to increase the weight of the float in order to overcome the forces applied by vacuum or subatmospheric pressure that can communicating a region of the atmospheric vent valve between the float and the plug by the device controlling the reverse flow through the breather tube.
9. 9. A drainage transport regulating device as specified in claim 1, wherein the atmospheric vent valve further comprises a pressure relief valve extending from the breather tube out of the drainage collector receptacle to escape at hydrostatic pressure contained inside the receptacle and that is over a predetermined limit.
10. A drainage transport regulating device as specified in claim 9, wherein the pressure relief valve comprises a check valve.
11. A drainage transport regulating device as specified in claim 1, further comprising a tank with a check valve interposed within the subatmospheric vacuum / pressure conduit device to inhibit the passage of the drain from the transport conduit.
12. 12. A drainage transport regulating device as specified in claim 1, further comprising a condensation trap interposed within the atmospheric pressure communication conduit between the atmospheric vent valve and the sensor device or controlling device to inhibit the step of condensed moisture to the sensing device or controller device.
13. A drainage transport regulating device as specified in claim 1, further comprising conductive devices between the sensing device and the receptacle for communicating the level of hydrostatic pressure within the receptacle to the sensing device, wherein the assembly of parts operated by pressure differentials within the sensor device is calibrated to be activated once the drain level in the receptacle exceeds a predetermined volume.
14. 14. A drainage transport regulating device as specified in claim 1, wherein the sensing device and the controlling device are combined into a single unit.
15. 15. A drainage transport regulating device as specified in claim 1, wherein the atmospheric pressure is supplied to provide a flow control device operated by pressure differentials by a conductor device in operative communication with the receptacle without a air exhaust or other conduit that protrudes openly above ground level.