Energy-saving air supplementing and cleaning device for vacuum drainage pipeline

Abstract

The application discloses an energy-saving type vacuum drainage pipeline air supplementing and cleaning device, which comprises a vacuum valve and a negative pressure controller, the negative pressure controller comprises a vacuum output port and a first vacuum pipeline interface, the vacuum valve comprises a vacuum input port and a second vacuum pipeline interface, the first and second vacuum pipeline interfaces are connected with a vacuum pipeline, the vacuum output port of the negative pressure controller is communicated with the vacuum input port of the vacuum valve, and the vacuum negative pressure output by the negative pressure controller can control the opening and closing of the vacuum valve. The energy-saving type vacuum drainage pipeline air supplementing and cleaning device is combined with the vacuum valve and the negative pressure controller, can accurately and effectively obtain a vacuum negative pressure value in a suitable range to supplement the atmosphere to the vacuum pipeline for pipeline cleaning, and cannot cause the situation that the vacuum station continuously extracts the gas in the vacuum pipeline to generate high energy consumption when the system is restarted or starts to die, so that the technical effects of preventing misoperation and saving energy are achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to an energy-saving vacuum drainage pipe air replenishment and cleaning device. Background Technology

[0002] The vacuum sewage collection pipeline of the vacuum negative pressure sewer system is very flexible in length, and vacuum negative pressure can be used for suction from 500 to 6,000 meters. However, the problems encountered in actual use are that the vacuum pipeline section often encounters the following problems when collecting in such a long area: (1) It is necessary to climb over rivers, bridges, or encounter obstacles, and the pipeline goes down and then up again. These special situations often consume a lot of vacuum lifting capacity, which affects the speed and distance of water transport in the pipeline, resulting in water blockage in the pipeline; (2) Long-distance vacuum pipelines are prone to excessive water volume and insufficient vacuum air volume, which slows down the flow rate of air-water mixing in the pipeline, and causes the vacuum pipeline to be filled with sewage and produce water blockage. In addition to causing the accumulation of debris in the sewage inside and outside the pipeline, it also causes the vacuum pipeline to be unable to simultaneously transport sewage and deliver vacuum negative pressure air from the vacuum station to the vacuum well of the system, so that the vacuum well has enough vacuum negative pressure to start suction of sewage in the well.

[0003] To solve the above problems, technicians developed a vacuum self-cleaning and gas-replenishing device and installed it in multiple branch pipes of the system. However, due to the large number of installations, it often easily overloads the vacuum pump of the vacuum station, meaning that the vacuum self-cleaning and gas-replenishing device introduces a large amount of atmospheric gas, thus consuming a large amount of vacuum gas. This situation often occurs when the vacuum system restarts (at which time the vacuum negative pressure in the vacuum pipe is zero). Therefore, the vacuum station's evacuation from 0 kPa to the system's stop point (-60 kPa to -65 kPa) will go through the following two stages.

[0004] A. Stage 0 – Pre-defined threshold for gas replenishment (generally -30 to -50 kPa);

[0005] B. The stage is determined by the pre-defined gas injection threshold until the system vacuum meets the threshold;

[0006] Phase A requires the largest vacuum volume, which must not only meet the actual needs of the vacuum pipeline but also account for the vacuum volume loss caused by atmospheric gas replenishment from all vacuum self-cleaning and gas replenishment devices. This is because the vacuum self-cleaning and gas replenishment devices will automatically activate to introduce atmospheric gas due to the abnormal low-pressure condition within their respective vacuum pipelines, thus increasing the burden on the system's vacuuming capacity. In Phase B, since the pipeline cleaning has already met the set pressure, no further gas replenishment and cleaning action is required. At this time, all available vacuum volume can directly meet the needs of rapidly increasing the vacuum level of the vacuum pipeline. Conversely, if the system has already started up and the vacuum pipeline has switched from high-pressure to low-pressure operation, the aforementioned energy consumption and large-scale gas extraction problems will not occur. Summary of the Invention

[0007] This invention provides an energy-saving vacuum drainage pipe air replenishment and cleaning device, including a vacuum valve and a negative pressure controller. When used together, the two can accurately and effectively obtain a suitable range of vacuum negative pressure values ​​to replenish the vacuum pipe with atmospheric air for pipe cleaning. This avoids the situation where the vacuum station continuously extracts gas from the vacuum pipe and generates high energy consumption when the system restarts or crashes. It has the technical effects of preventing misoperation and saving energy.

[0008] To solve the above-mentioned technical problems, the present invention provides an energy-saving vacuum drainage pipe air replenishment and cleaning device, including a vacuum valve and a negative pressure controller. The negative pressure controller includes a vacuum output port and a first vacuum pipe interface. The vacuum valve includes a vacuum input port and a second vacuum pipe interface. The first vacuum pipe interface is connected to a vacuum pipe, and the second vacuum pipe interface is connected to a vacuum pipe. The vacuum output port of the negative pressure controller is connected to the vacuum input port of the vacuum valve. The vacuum negative pressure output by the negative pressure controller can control the opening and closing of the vacuum valve.

[0009] In some embodiments, the negative pressure controller includes a first chamber, a second chamber, a third chamber, a fourth chamber, and a first switching mechanism connecting each chamber. The first chamber and the third chamber are connected, the second chamber is connected to the atmosphere, the third chamber is provided with the first vacuum pipe interface, the third chamber is connected to a vacuum pipe, and the fourth chamber is provided with the vacuum output port, which is connected to the vacuum valve. A first gas replenishment channel is provided between the third chamber and the fourth chamber. Changes in the gas pressure in the first chamber can drive the first switching mechanism to open or close the first gas replenishment channel.

[0010] In some embodiments, the first switching mechanism includes a first diaphragm, a first moving shaft, and a first spring. The first diaphragm connects a first chamber and a second chamber, and prevents the first chamber and the second chamber from communicating with each other. The first spring is disposed in the first chamber and connected to the first diaphragm. The first end of the first moving shaft is located in the second chamber and connected to the first diaphragm, and the end passes through the third chamber and is located in the fourth chamber. The change in air pressure in the first chamber drives the first diaphragm to deform, thereby driving the first moving shaft to move synchronously. The end of the first moving shaft moves back and forth between the open position and the closed position of the first air supply channel.

[0011] The deformation of the first diaphragm can compress the first spring, causing the first moving axis to move to the closed position of the first air supply channel. The rebound force of the first spring can drive the first diaphragm to move the first moving axis to the open position of the first air supply channel.

[0012] In some embodiments, the first chamber is provided with a top block and a base, one end of the first spring is connected to the top block and the other end is connected to the base, and the base is connected to the first diaphragm.

[0013] In some embodiments, a negative pressure gauge is also provided, which is used to monitor the negative pressure value of the first chamber or the third chamber.

[0014] In some embodiments, the first chamber is provided with an adjusting bolt for adjusting the compression of the first spring. One end of the adjusting bolt is connected to a top block inside the first chamber, and the other end is located outside the negative pressure controller. The compression of the first spring is increased by rotating the adjusting bolt from the outside to compress the top block inside the first chamber.

[0015] In some embodiments, the vacuum valve includes a first chamber, a second chamber, a third chamber, a fourth chamber, and a second switching mechanism connecting each chamber. The first chamber is provided with a vacuum input port for connecting to the negative pressure output by the negative pressure controller. The second and third chambers are both connected to the atmosphere. The fourth chamber is provided with a second vacuum pipe interface and is connected to a vacuum pipe. The first and fourth chambers are not connected to each other. A second air supply channel is provided between the third and fourth chambers. Changes in the air pressure in the first chamber can drive the second switching mechanism to open or close the second air supply channel.

[0016] In some embodiments, the atmospheric vent of the third air chamber is provided with a flow regulating mechanism for controlling the atmospheric input flow rate. The flow regulating mechanism includes a disc, and the disc is provided with a plurality of evenly arranged vent holes of different diameters in the circumferential direction. The atmospheric input flow rate of the third air chamber is regulated by rotating the rotating shaft of the disc to switch between vent holes of different diameters.

[0017] In some embodiments, the flow regulating mechanism further includes a positioning structure, which includes a positioning hole, a positioning bead, and a positioning spring. The positioning bead is installed in the third air chamber by the positioning spring. Multiple positioning holes are provided on the disc, and each positioning hole corresponds to a vent hole. Rotating the disc can drive the appropriate positioning hole to align with the positioning bead. The positioning bead is locked in the positioning hole under the rebound force of the positioning spring to limit the position of the disc.

[0018] In some embodiments, the second switching mechanism includes a second diaphragm, a second moving shaft, and a second spring. The second diaphragm connects the first air chamber and the second air chamber, and prevents the first air chamber and the second air chamber from communicating with each other. The second spring is disposed in the first air chamber and connected to the second diaphragm. The first end of the second moving shaft is located in the second air chamber and connected to the second diaphragm, and the end is located in the third air chamber. The change in air pressure in the first air chamber drives the second diaphragm to deform, thereby driving the second moving shaft to move synchronously. The end of the second moving shaft moves back and forth between the open position and the closed position of the second air supply channel.

[0019] The deformation of the second diaphragm can compress the second spring, causing the second moving axis to move to the open position of the second air supply channel. The rebound force of the second spring can drive the second diaphragm to move the second moving axis to the closed position of the second air supply channel.

[0020] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0021] 1. This application does not require electric drive and is not limited by the area where it can be used;

[0022] 2. This application combines a vacuum valve with a negative pressure controller. When the negative pressure controller detects and determines the negative pressure value in its vacuum pipeline, it will open and transmit vacuum negative pressure gas from the vacuum pipeline to the vacuum valve when the vacuum negative pressure value in the vacuum pipeline is less than the predetermined threshold of the negative pressure controller. At this time, the vacuum valve will sense the transmitted vacuum negative pressure gas, and the device will only be activated when the vacuum negative pressure value is greater than the predetermined threshold of the energy-saving vacuum drainage pipeline gas replenishment and cleaning device, continuously replenishing the vacuum pipeline until the negative pressure controller shuts off the transmission of vacuum gas to the vacuum valve, at which point the atmospheric gas replenishment will stop. This application combines a vacuum valve with a negative pressure selector, which prevents the vacuum station from continuously extracting gas from the vacuum pipeline and generating high energy consumption when the vacuum system restarts or restarts after a system crash. It has the beneficial effects of preventing misoperation and saving energy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 (The vacuum valve is closed, the negative pressure controller is open, and the vacuum negative pressure value is less than the predetermined threshold for vacuum valve activation.)

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 (The vacuum valve is open, the negative pressure controller is open, and the vacuum negative pressure value is between the predetermined threshold for the negative pressure controller to start and the predetermined threshold for the vacuum valve to start.)

[0026] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 (Vacuum valve closed, negative pressure controller closed, vacuum negative pressure value greater than negative pressure controller activation preset threshold);

[0027] Figure 4 This is a schematic diagram of the negative pressure controller of the present invention. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the negative pressure controller of the present invention. Figure 2 (The negative pressure controller is off, and the vacuum negative pressure value is greater than the predetermined threshold for the negative pressure controller to start.)

[0029] Figure 6 This is a schematic diagram of the negative pressure controller of the present invention. Figure 3 (The negative pressure controller is activated, and the vacuum negative pressure value is between the predetermined threshold for the negative pressure controller activation and the predetermined threshold for the vacuum valve activation.)

[0030] Figure 7 This is a schematic diagram of the negative pressure controller of the present invention. Figure 4 (The negative pressure controller is activated, and the vacuum negative pressure value is less than the predetermined threshold for vacuum valve activation.)

[0031] Figure 8 This is a schematic diagram of the structure of the present invention;

[0032] Figure 9 for Figure 8 Enlarged view of C1;

[0033] Figure 10 This is a schematic diagram of the structure of the disk of the present invention;

[0034] Explanation of reference numerals in the attached figures:

[0035] Negative pressure controller B, first chamber 1, second chamber 2, third chamber 3, fourth chamber 4, first switching mechanism 5, first diaphragm 51, first moving shaft 52, sealing block 521, shaft seal 522, first spring 53, top block 531, base 532, negative pressure gauge 7, adjusting bolt 8, vacuum output port 9, first vacuum pipeline interface 10;

[0036] Vacuum valve A, first gas chamber A1, vacuum inlet A11, second gas chamber A2, third gas chamber A3, fourth gas chamber A4, second switching mechanism A5, second diaphragm A51, second moving shaft A52, second spring A53, flow regulating mechanism A6, disc A61, rotating shaft A62, vent A611, positioning hole A631, positioning bead A632, positioning spring A633, buffer spring A634, knob A64, sealing ring A7, mating seat A8, vacuum inlet A9, second vacuum pipeline interface A10. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] This application is described below with reference to the accompanying drawings and specific embodiments.

[0040] This application provides an energy-saving vacuum drainage pipe air replenishment and cleaning device, which combines a vacuum valve and a negative pressure controller. This combination has two predetermined start-up thresholds. In the vacuum system, it can accurately and effectively obtain a suitable range of vacuum negative pressure values ​​to replenish the vacuum pipe with atmosphere for pipe cleaning. It avoids the situation where the vacuum station continuously extracts gas from the vacuum pipe and generates high energy consumption when the vacuum system restarts or crashes. It has the technical effects of preventing misoperation and saving energy.

[0041] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0042] The principles of gas replenishment and cleaning involved are as follows:

[0043] The reason why sewage can move quickly through the vacuum pipeline in the vacuum sewage collection system and be transported from the source vacuum well to the vacuum station is not only because the vacuum gas draws the sewage in the pipeline, but also because a large amount of atmospheric air is drawn in each time the vacuum well is opened and closed to draw sewage or before the vacuum valve is closed. After entering the vacuum pipeline, this atmospheric air rushes towards the high vacuum area at a very high speed (generally, the vacuum negative pressure tank in the vacuum station is the highest vacuum source). This high-speed gas will forcefully push the sewage blocking the vacuum pipeline forward, forming a gas-water mixed rapid transport form.

[0044] In theory, the gas-liquid ratio for normal wastewater transport is approximately 7:1 to 14:1, depending on the size, distance, and obstacle avoidance conditions of the collection area. The higher the ratio, the stronger the vacuum transport capacity, but at the same time, more vacuum power will be consumed to remove the atmosphere from the pipes entering the system.

[0045] The principles of energy-saving technology are as follows:

[0046] The vacuum pipeline pressure detection and gas replenishment operation in the gas replenishment cleaning device are set separately. The pipeline vacuum negative pressure setting point (adjustable -30~50kPa) is set on the vacuum pressure detection facility. In addition, a gas replenishment start threshold is set on the gas replenishment device. If the pipeline section vacuum negative pressure value is too low (<-20~-25kPa), this part will be considered as abnormal operation and the gas replenishment valve in the cleaning device will not be able to open and will not perform any gas replenishment operation.

[0047] Based on the above theory, this application provides an energy-saving vacuum drainage pipe air replenishment and cleaning device. See [link to relevant documentation]. Figure 1 and Figure 3 The system includes a vacuum valve A and a negative pressure controller B. The negative pressure controller includes a vacuum output port 9 and a first vacuum pipeline interface 10. The vacuum valve includes a vacuum input port A9 and a second vacuum pipeline interface A10. The first vacuum pipeline interface is connected to a vacuum pipeline, and the second vacuum pipeline interface is connected to a vacuum pipeline. The vacuum output port of the negative pressure controller is connected to the vacuum input port of the vacuum valve. The change in the magnitude of the vacuum negative pressure value output by the negative pressure controller can control the opening and closing of the vacuum valve.

[0048] In this embodiment, the negative pressure controller is used to monitor the vacuum negative pressure value in the vacuum pipeline. When the vacuum negative pressure value is less than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will automatically connect to transmit the vacuum negative pressure gas in the vacuum pipeline to the vacuum valve. When the vacuum negative pressure value in the vacuum pipeline is greater than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will shut off the vacuum gas in the vacuum pipeline transmitted to the vacuum valve and will not react.

[0049] The vacuum valve receives the vacuum negative pressure value transmitted from the negative pressure controller. When the vacuum negative pressure value is greater than the vacuum valve's predetermined start threshold, the vacuum valve activates and opens to replenish the vacuum pipeline with atmospheric air for cleaning. When the vacuum negative pressure value is less than the vacuum valve's predetermined start threshold, the vacuum valve does not activate and does not perform the air replenishment and cleaning work.

[0050] That is, the gas replenishment and cleaning device of this application needs to meet two predetermined thresholds to start, namely, between the predetermined threshold for starting the vacuum valve and the predetermined threshold for starting the negative pressure controller, before the gas replenishment and cleaning device will start to perform the gas replenishment and cleaning action.

[0051] See Figure 4 and Figure 7 The negative pressure controller includes a first chamber 1, a second chamber 2, a third chamber 3, a fourth chamber 4, and a first switching mechanism 5 connecting the first, second, third, and fourth chambers. The first and third chambers are connected, the second chamber is connected to the atmosphere, the third chamber is provided with the first vacuum pipe interface and is connected to the vacuum pipe, and the fourth chamber is provided with the vacuum output port and is connected to the vacuum valve. A first gas supply channel is provided between the third and fourth chambers. Changes in the gas pressure in the first chamber can drive the first switching mechanism to open or close the first gas supply channel. When the device is in use, under normal vacuum pipe conditions, the vacuum pressure is high enough to cause the first diaphragm to deform and compress the first spring, and the seal at the end of the first moving shaft... The block blocks the first air supply channel between the third and fourth chambers, meaning the first moving shaft is in the closed position. When the vacuum pipe encounters a water plug or the water rises, the vacuum pressure is insufficient, and the pressure difference between the first and second chambers is less than the rebound force of the first spring. The rebound force causes the first spring to extend and drives the first diaphragm to move the first moving shaft to the conduction position between the third and fourth chambers. That is, the blocking block at the end of the first moving shaft leaves the first air supply channel between the third and fourth chambers. At this time, a large amount of vacuum atmosphere in the third chamber enters the fourth chamber and flows through the fourth chamber to the connected vacuum valve. When the vacuum negative pressure value entering the vacuum valve is greater than the predetermined threshold for the vacuum valve to start, the second switching mechanism in the vacuum valve is activated, the second air supply channel in the vacuum valve is opened, and the air supply and cleaning device starts to operate. Otherwise, the air supply and cleaning device does not operate.

[0052] See Figures 4-7The first switching mechanism 5 includes a first diaphragm 51 and a first moving shaft 52. The first diaphragm is used to connect the first chamber and the second chamber, and prevents the first chamber and the second chamber from communicating with each other. The first end of the first moving shaft is located in the second chamber and connected to the first diaphragm, and the end passes through the third chamber and is located in the fourth chamber. The change in air pressure in the first chamber drives the first diaphragm to deform, thereby driving the first moving shaft to move synchronously. The end of the first moving shaft moves back and forth between the open position and the closed position of the third chamber and the fourth chamber.

[0053] Furthermore, the first switching mechanism also includes a first spring 53, which is disposed in the first chamber and connected to the first diaphragm. The deformation of the first diaphragm can compress the first spring, causing the first moving axis to move to the closed position of the third chamber and the fourth chamber. The rebound force of the first spring can drive the first diaphragm to move the first moving axis to the open position of the first gas supply channel. Specifically, when the difference between the vacuum pressure and the atmospheric negative pressure is greater than or equal to the predetermined threshold of the negative pressure controller, the first diaphragm compresses the first spring, and the first moving axis is located in the closed position of the third chamber and the fourth chamber. At this time, the negative pressure controller does not operate. When the difference between the vacuum pressure and the atmospheric negative pressure is less than the predetermined threshold, the rebound force of the first spring causes the first spring to extend and drives the first moving axis to the open position of the third chamber and the fourth chamber. At this time, the negative pressure controller starts the action of supplying vacuum gas to the vacuum valve.

[0054] In some embodiments, the first chamber is provided with a top block 531 and a base 532, one end of the first spring is connected to the top block and the other end is connected to the base, and the base is connected to the first diaphragm.

[0055] Specifically, the first chamber is equipped with a negative pressure gauge 7 that reflects the vacuum negative pressure value inside the first chamber (since the first chamber is connected to the third chamber, the negative pressure gauge also measures the vacuum negative pressure value inside the third chamber). Since the vacuum in the first chamber comes from the vacuum pipeline, the vacuum negative pressure value inside the vacuum pipeline can be displayed in real time according to the negative pressure gauge. When the absolute value of the vacuum negative pressure inside the vacuum pipeline is greater than the predetermined threshold of the negative pressure controller, the vacuum negative pressure inside the vacuum pipeline is normal, so the negative pressure controller will not react or take any action; conversely, when the absolute value of the vacuum negative pressure inside the vacuum pipeline is less than the predetermined threshold of the negative pressure controller, the negative pressure controller will automatically open to introduce vacuum gas into the vacuum valve.

[0056] In some embodiments, to accommodate a wider range of vacuum negative pressure values ​​in vacuum pipelines and to precisely control the opening and closing of the negative pressure controller, the first chamber is equipped with an adjusting bolt 8 for adjusting the compression of the first spring. One end of the adjusting bolt is connected to a top block inside the first chamber, and the other end is located outside the negative pressure controller. By rotating the adjusting bolt from the outside, the top block inside the first chamber is compressed, thereby increasing the compression of the first spring. When the adjusting bolt is rotated downwards, it will generate greater compression on the first spring below, causing the first spring to accumulate greater rebound force. This indicates that a greater vacuum negative pressure value is needed to attract and compress the first spring. The spring remains unchanged, meaning the first spring will not extend to push the first moving shaft below, which also means a higher absolute value of vacuum negative pressure can be obtained. As long as it is below this predetermined threshold, the first spring will actuate and return to its original position. Conversely, when the adjusting screw is turned up, the compression and restriction on the first spring are reduced, and a smaller vacuum negative pressure value can be obtained to allow the first spring to relax and extend. In this way, by adjusting the adjusting screw, the negative pressure controller can be adjusted according to the on-site requirements to meet the start-up and shutdown requirements of the environment at that time. It can be understood that the predetermined threshold can be controlled by adjusting the adjusting screw and thus adjusting the compression of the first spring. Different vacuum negative pressure environments correspond to different predetermined thresholds.

[0057] Specifically, the end of the first moving shaft is provided with a generally conical sealing block 521. The sealing block 521 is used to open or close the first air supply channel of the first moving shaft in the third and fourth chambers. When the first moving shaft moves down, the sealing block 521 is pushed into the interior of the fourth chamber. At this time, the first air supply channel is opened, and a large amount of air enters the fourth chamber and flows to the connected vacuum valve through the first air supply channel.

[0058] Specifically, the first moving shaft is provided with a shaft seal 522 at the connecting shaft seam between the second chamber and the third chamber.

[0059] In this embodiment, preferably, the first diaphragm is a rubber diaphragm.

[0060] See Figure 8 and Figure 10 The vacuum valve includes a first chamber A1, a second chamber A2, a third chamber A3, a fourth chamber A4, and a second switching mechanism A5 connecting each chamber. The first chamber has a vacuum input port A11, which is used to connect to the vacuum negative pressure output by the negative pressure controller. The second and third chambers are both connected to the atmosphere. The fourth chamber has a second vacuum pipe interface and is connected to a vacuum pipe. The first and fourth chambers are not connected to each other. A second air supply channel is provided between the third and fourth chambers. Changes in the air pressure in the first chamber can drive the second switching mechanism to open or close the second air supply channel.

[0061] Specifically, the second switching mechanism A5 includes a second diaphragm A51 and a second moving shaft A52. The second diaphragm connects the first air chamber and the second air chamber, and prevents the first air chamber and the second air chamber from communicating with each other. The first end of the second moving shaft is located in the second air chamber and connected to the second diaphragm, and the end is located in the third air chamber. The change in air pressure in the first air chamber drives the second diaphragm to deform, thereby driving the second moving shaft to move synchronously. The end of the second moving shaft moves back and forth between the open position and the closed position of the second air supply channel.

[0062] Furthermore, the second switching mechanism also includes a second spring A53, which is disposed in the first air chamber and connected to the second diaphragm;

[0063] The deformation of the second diaphragm can compress the second spring, causing the second moving axis to move to the open position of the second air supply channel. The rebound force of the second spring can drive the second diaphragm to move the second moving axis to the closed position of the second air supply channel.

[0064] When this device is in use, when the first chamber receives a negative vacuum pressure input from the vacuum inlet and it is greater than the predetermined threshold for the vacuum valve to start, the second diaphragm deforms and compresses the second spring. The second moving shaft moves into the first chamber, and the end of the second moving shaft leaves the second gas replenishment channel between the third and fourth chambers. The third and fourth chambers are connected, and the atmospheric air in the third chamber flows into the vacuum pipe through the fourth chamber, starting the gas replenishment and cleaning operation. When the first chamber receives a negative vacuum pressure input from the vacuum inlet and it is less than the predetermined threshold for the vacuum valve to start, the rebound force of the second spring causes the second spring to extend and drives the second diaphragm to move the second moving shaft to the closed position of the second gas replenishment channel. The third and fourth chambers are no longer connected, and the gas replenishment operation stops.

[0065] Since the amount of air replenishment often varies depending on the location of the vacuum pipeline, different amounts of air are required for air blowing and purging. These large air volumes often need to be supplied using orifices of different sizes. It is difficult to manually adjust these orifices using existing needle valves or ball valves. This patent is designed to increase the operator's ability to accurately adjust and indicate the required amount of air. In this application, the atmospheric vent of the third air chamber is equipped with a flow regulation mechanism A6 to control the atmospheric input flow rate. The flow regulation mechanism includes a disc A61, which has a rotating shaft A62. The disc is circumferentially provided with several vent holes A611 of different diameters. By rotating the rotating shaft of the disc, the atmospheric input flow rate of the third air chamber can be adjusted by switching between vent holes of different diameters.

[0066] Specifically, the flow regulation mechanism further includes a positioning structure, which includes a positioning hole A631, a positioning bead A632, and a positioning spring A633. The positioning hole can be a blind hole or a through hole, and in this embodiment, a blind hole is preferred. The positioning bead is installed in the third air chamber by the positioning spring. There are multiple positioning holes on the disc, and each positioning hole corresponds to a vent hole. That is, locking different positioning holes means selecting vent holes of different diameters. Rotating the disc can drive the appropriate positioning hole to align with the positioning bead. The positioning bead is locked in the positioning hole under the rebound force of the positioning spring, thereby limiting the position of the disc.

[0067] To facilitate the adjustment of the vent holes on the disc by the operator, a knob A64 is provided at the end of the rotating shaft. One end of the knob is connected to the rotating shaft, and the other end is located outside the vacuum valve for the operator to use.

[0068] Preferably, the rotating shaft is installed in the third air chamber by a buffer spring A634. The buffer spring is located on the outer peripheral wall of the rotating shaft and is in a stretched state under normal conditions, which tightly pulls the disc toward the positioning bead, so that the positioning hole and the positioning bead are firmly locked together.

[0069] The operator adjusts the flow rate by rotating the shaft from the outside and selecting the appropriate vent. Specifically, the operator first holds the knob and pushes the shaft inward from the knob to compress the buffer spring, causing the positioning hole of the disc to disengage from the positioning bead. The operator then rotates the disc to select the appropriate vent and finally releases the knob. The positioning bead is then engaged in the positioning hole by the force of the positioning spring, thus defining the position of the disc.

[0070] Specifically, a sealing ring A7 is provided at the second gas supply channel. When the vacuum valve closes the gas supply and cuts off the atmospheric input, the sealing ring can ensure the complete closure of the second gas supply channel and the cut-off of the gas input.

[0071] Specifically, the second diaphragm is provided with a mating seat A8, and the second spring and the second moving shaft are both mounted on the mating seat and are located on both sides of the second diaphragm respectively.

[0072] In this embodiment, the second diaphragm is a rubber diaphragm.

[0073] In this embodiment, the negative pressure controller is used to monitor the vacuum negative pressure value in the vacuum pipeline. When the vacuum negative pressure value is less than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will automatically connect to transmit the vacuum negative pressure gas in the vacuum pipeline to the vacuum valve. When the vacuum negative pressure value in the vacuum pipeline is greater than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will shut off the vacuum gas in the vacuum pipeline transmitted to the vacuum valve and will not react.

[0074] The vacuum valve operates as follows in response to the negative vacuum value transmitted from the negative pressure control system:

[0075] When the vacuum negative pressure gas transmitted from the negative pressure controller is introduced into the first chamber of the vacuum valve through the vacuum input port, if the vacuum negative pressure value in the first chamber of the vacuum valve is less than the predetermined threshold for starting the vacuum valve, this low (less than the predetermined threshold for starting) vacuum negative pressure value will not be able to drive the second switching mechanism to operate, the vacuum valve will not operate, the end of the second moving shaft will be blocked at the second gas replenishment channel, the third chamber and the fourth chamber will not be connected, and the device will not perform gas replenishment and cleaning work.

[0076] When the vacuum negative pressure gas transmitted from the negative pressure controller is introduced into the first air chamber through the vacuum input port, when the vacuum negative pressure value in the first air chamber of the vacuum valve is greater than the predetermined threshold for starting the vacuum valve, under this higher vacuum degree (greater than the predetermined threshold for starting the vacuum valve), the second diaphragm of the vacuum valve deforms and compresses the second spring, the second moving shaft moves into the first air chamber, and the end of the second moving shaft leaves the second gas replenishment channel of the third and fourth air chambers, the third and fourth air chambers are connected, and the atmosphere in the third air chamber flows into the vacuum pipeline through the fourth air chamber, and the gas replenishment and cleaning work begins.

[0077] When the vacuum pipeline gradually returns to its normal vacuum negative pressure value due to the gas purging function, the higher vacuum negative pressure value will exceed the predetermined threshold of the negative pressure controller. The negative pressure controller will automatically shut off the transmission of vacuum negative pressure gas to the vacuum valve. For the vacuum valve, the sudden loss of vacuum negative pressure attraction will cause the second diaphragm in the first gas chamber to stop concave into the first gas chamber and return to flatness. At this time, the second spring, due to the reduced thrust of the second diaphragm, will generate spring rebound force to extend and drive the connected second moving shaft to seal with the sealing ring at the second gas replenishment channel. The third and fourth gas chambers will not be connected, cutting off the atmospheric gas from the third gas chamber and stopping the gas replenishment action. That is, the gas replenishment and purging device will stop the gas replenishment action and end the pipeline purging operation.

[0078] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0079] Furthermore, the use of terms such as "first," "second," "third," and "fourth" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0080] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the first feature can include direct contact between the second and first features, or contact between the second and first features through another feature between them. Furthermore, "above," "over," and "on top" of the first feature includes the second feature directly above or diagonally above the first feature, or simply indicates that the second feature is at a higher horizontal level than the first feature. "Below," "below," and "under" the first feature includes the second feature directly below or diagonally below the first feature, or simply indicates that the second feature is at a lower horizontal level than the first feature.

[0081] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0082] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0083] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An energy-saving vacuum drainage pipe air replenishment and cleaning device, characterized in that, The system includes a vacuum valve and a negative pressure controller. The negative pressure controller includes a vacuum output port and a first vacuum pipeline interface. The vacuum valve includes a vacuum input port and a second vacuum pipeline interface. The first vacuum pipeline interface is connected to a vacuum pipeline, and the second vacuum pipeline interface is connected to a vacuum pipeline. The vacuum output port of the negative pressure controller is connected to the vacuum input port of the vacuum valve. The negative vacuum output by the negative pressure controller can control the opening and closing of the vacuum valve. The negative pressure controller is used to monitor the vacuum negative pressure value in the vacuum pipeline. When the vacuum negative pressure value is less than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will automatically connect to transmit the vacuum negative pressure gas in the vacuum pipeline to the vacuum valve. When the vacuum negative pressure value in the vacuum pipeline is greater than the predetermined threshold for the negative pressure controller to start, the negative pressure controller will shut off the vacuum gas in the vacuum pipeline transmitted to the vacuum valve and will not react. The vacuum valve receives the vacuum negative pressure value transmitted from the negative pressure controller. When the vacuum negative pressure value is greater than the vacuum valve's predetermined start threshold, the vacuum valve activates and opens to replenish the vacuum pipeline with air for cleaning. When the vacuum negative pressure value is less than the vacuum valve's predetermined start threshold, the vacuum valve does not activate and does not perform air replenishment and cleaning.

2. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 1, characterized in that, The negative pressure controller includes a first chamber, a second chamber, a third chamber, a fourth chamber, and a first switching mechanism connecting each chamber. The first chamber and the third chamber are connected, the second chamber is connected to the atmosphere, the third chamber is provided with the first vacuum pipe interface, and the third chamber is connected to a vacuum pipe. The fourth chamber is provided with the vacuum output port, and the vacuum output port is connected to the vacuum valve. A first gas replenishment channel is provided between the third chamber and the fourth chamber. Changes in the gas pressure in the first chamber can drive the first switching mechanism to open or close the first gas replenishment channel.

3. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 2, characterized in that, The first switching mechanism includes a first diaphragm, a first moving shaft, and a first spring. The first diaphragm connects the first chamber and the second chamber, preventing them from communicating with each other. The first spring is located in the first chamber and connected to the first diaphragm. The first end of the first moving shaft is located in the second chamber and connected to the first diaphragm, while the end passes through the third chamber and is located in the fourth chamber. Changes in air pressure in the first chamber drive the first diaphragm to deform, thereby causing the first moving shaft to move synchronously. The end of the first moving shaft moves back and forth between the open and closed positions of the first air supply channel. The deformation of the first diaphragm can compress the first spring, causing the first moving axis to move to the closed position of the first air supply channel. The rebound force of the first spring can drive the first diaphragm to move the first moving axis to the open position of the first air supply channel.

4. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 3, characterized in that, The first chamber is provided with a top block and a base. One end of the first spring is connected to the top block and the other end is connected to the base. The base is connected to the first diaphragm.

5. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 2, characterized in that, A negative pressure gauge is also provided, which is used to monitor the negative pressure value of the first chamber or the third chamber.

6. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 4, characterized in that, The first chamber is provided with an adjusting bolt for adjusting the compression of the first spring. One end of the adjusting bolt is connected to the top block inside the first chamber, and the other end is located outside the negative pressure controller. By rotating the adjusting bolt from the outside, the top block inside the first chamber is squeezed, thereby increasing the compression of the first spring.

7. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 1, characterized in that, The vacuum valve includes a first chamber, a second chamber, a third chamber, a fourth chamber, and a second switching mechanism connecting each chamber. The first chamber has a vacuum input port for connecting to the negative pressure output by the negative pressure controller. The second and third chambers are both connected to the atmosphere. The fourth chamber has a second vacuum pipe interface and is connected to a vacuum pipe. The first and fourth chambers are not connected to each other. A second air supply channel is provided between the third and fourth chambers. Changes in the air pressure in the first chamber can drive the second switching mechanism to open or close the second air supply channel.

8. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 7, characterized in that, The atmospheric vent of the third air chamber is equipped with a flow regulation mechanism for controlling the atmospheric input flow rate. The flow regulation mechanism includes a disc, on which several vent holes of different diameters are evenly arranged in the circumferential direction. The atmospheric input flow rate of the third air chamber is adjusted by rotating the disc's shaft to switch between vent holes of different diameters.

9. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 8, characterized in that, The flow regulation mechanism also includes a positioning structure, which includes a positioning hole, a positioning bead, and a positioning spring. The positioning bead is installed in the third air chamber by the positioning spring. Multiple positioning holes are provided on the disc, and each positioning hole corresponds to a vent hole. Rotating the disc can drive the appropriate positioning hole to align with the positioning bead. The positioning bead is locked in the positioning hole under the rebound force of the positioning spring to limit the position of the disc.

10. The energy-saving vacuum drainage pipe air replenishment and cleaning device as described in claim 7, characterized in that, The second switching mechanism includes a second diaphragm, a second moving shaft, and a second spring. The second diaphragm connects the first air chamber and the second air chamber, preventing them from communicating with each other. The second spring is located in the first air chamber and connected to the second diaphragm. The first end of the second moving shaft is located in the second air chamber and connected to the second diaphragm, while the end is located in the third air chamber. Changes in the air pressure in the first air chamber drive the second diaphragm to deform, thereby causing the second moving shaft to move synchronously. The end of the second moving shaft moves back and forth between the open and closed positions of the second air supply channel. The deformation of the second diaphragm can compress the second spring, causing the second moving axis to move to the open position of the second air supply channel. The rebound force of the second spring can drive the second diaphragm to move the second moving axis to the closed position of the second air supply channel.

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