Automatic exhaust structure

Abstract

The utility model relates to an automatic exhaust structure, which is mounted on a pipeline and comprises a controller, an electromagnetic valve mounted on the pipeline, an exhaust pipe mounted at the highest position of the pipeline and communicated with the inside of the pipeline, a pressure sensor mounted on the exhaust pipe and used for detecting the internal pressure of the exhaust pipe, and a water-gas dual-purpose pump connected with the exhaust pipe, a first limiting ring is arranged in the bottom end of the exhaust pipe, and a plurality of exhaust holes are formed in the first limiting ring at intervals; a floating ball is arranged in the exhaust pipe, and the diameter of the floating ball is smaller than the inner side pipe diameter of the pipeline and larger than the inner diameter of the first limiting ring. A second limiting ring is arranged in the top end of the exhaust pipe. The diameter of the floating ball is larger than the inner diameter of the second limiting ring. A waterproof travel switch is further arranged in the top end of the exhaust pipe, and when the floating ball floats upwards to abut against the interior of the first limiting ring, the floating ball abuts against the waterproof travel switch, so that the waterproof travel switch is turned on; the electronic components are connected in a matched mode. The automatic exhaust structure can automatically exhaust air in the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, and in particular to an automatic exhaust structure. Background Technology

[0002] Air is quite common in piping systems. On one hand, air may enter with the liquid when it is injected into the pipe because it cannot be completely expelled; on the other hand, pipe leaks allow outside air to enter and gradually accumulate inside the pipe. When air enters circulating water pipes, it causes airlock, making water flow difficult and affecting the stability of water flow and pressure. Frequent pressure changes accelerate equipment aging and wear, and in severe cases, may lead to equipment failure.

[0003] Therefore, existing technology requires manually purging the air from the pipes when water is injected; during use, it is also necessary to manually open the pipes periodically to purge the air. The timing of air purging should be appropriately controlled to avoid purging too much water, which would waste water resources, and the operation is time-consuming and labor-intensive. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes an automatic exhaust structure that can automatically vent the air in the pipeline.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic venting structure is installed on a pipeline for conveying liquid, including a controller, a solenoid valve installed on the pipeline for controlling the flow of liquid in the pipeline, an vent pipe installed at the highest position of the pipeline and communicating with the inside of the pipeline, a pressure sensor installed on the vent pipe for detecting the pressure inside the vent pipe, and a water-air dual-purpose pump connected to the vent pipe.

[0007] The bottom end of the exhaust pipe is connected to the inside of the pipe, and a first limiting ring is fixedly provided inside the bottom end of the exhaust pipe. Multiple exhaust holes are spaced apart on the first limiting ring.

[0008] The exhaust pipe is equipped with a float ball inside. The diameter of the float ball is smaller than the inner diameter of the pipe, and the diameter of the float ball is larger than the inner diameter of the first limiting ring. When the float ball lands on the first limiting ring, the float ball will not block the exhaust holes on the first limiting ring.

[0009] The top end of the exhaust pipe is connected to a water-air dual-purpose pump, and a second limiting ring is fixedly installed inside the top end of the exhaust pipe. The diameter of the float is larger than the inner diameter of the second limiting ring.

[0010] The exhaust pipe is also equipped with a waterproof limit switch inside its top end. When the float rises to abut against the first limit ring, the float abuts against the waterproof limit switch, causing the waterproof limit switch to be turned on.

[0011] The solenoid valve, pressure sensor, water-air dual-purpose pump, and waterproof limit switch are electrically connected to the controller.

[0012] Furthermore, the density of the float is less than the density of the liquid inside the pipe.

[0013] Furthermore, it also includes an indicator light, which is electrically connected to the controller.

[0014] Furthermore, it also includes a display screen, which is electrically connected to the controller.

[0015] Furthermore, it also includes a wireless communication module, which is electrically connected to the controller.

[0016] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0017] When the pressure sensor detects an abnormal pressure (pressure different from the normal water pressure in the pipeline), the indicator light illuminates and the display shows the pressure data. The controller then controls the water-air dual-purpose pump to start pumping air. During this process, liquid enters the exhaust pipe, causing the float to rise until it touches the second limit ring and the waterproof limit switch, thus activating the switch. The controller then determines that the venting in the pipeline and exhaust pipe is complete and controls the water-air dual-purpose pump to stop pumping air. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic exhaust structure.

[0019] Figure 2 This is a schematic diagram of the structure with an exhaust hole on the first limiting ring of the automatic exhaust structure.

[0020] Figure 3 This is the circuit connection block diagram of this automatic exhaust structure. Detailed Implementation

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0022] refer to Figure 1 , Figure 2 and Figure 3 This embodiment provides an automatic venting structure, which is installed on the pipe 100 used for conveying liquid. This utility model does not involve any improvement to the existing pipe 100 itself, and will not be described in detail here.

[0023] The automatic exhaust structure includes a controller 6, an indicator light 7, a display screen 8, a wireless communication module 9, a solenoid valve 1 installed on the pipe 100 to control the flow of liquid in the pipe 100, an exhaust pipe 2 installed at the highest position of the pipe 100 and connected to the inside of the pipe 100, a pressure sensor 3 installed on the exhaust pipe 2 to detect the pressure inside the exhaust pipe 2, a water-air dual-purpose pump 4 connected to the exhaust pipe 2, and a waterproof limit switch 5 installed inside the exhaust pipe 2.

[0024] It should be noted that the solenoid valve 1, pressure sensor 3, water-air dual-purpose pump 4, waterproof limit switch 5, controller 6, indicator light 7, display screen 8, and wireless communication module 9 mentioned above are all existing electronic devices. Those skilled in the art should understand the conventional selection of the above electronic devices. Preferably, in this specific embodiment, the controller 6 is a Siemens PLC-200 programmable controller; the wireless communication module 9 is a 5G communication module.

[0025] like Figure 1 As shown, the bottom end of the exhaust pipe 2 is connected to the interior of the pipe 100, and a first limiting ring 21 is fixedly installed inside the bottom end of the exhaust pipe 2. Figure 2 As shown, the first limiting ring 21 has a plurality of vent holes 210 spaced apart.

[0026] The exhaust pipe 2 is equipped with a float 23, the density of which is less than the density of the liquid inside the pipe 100.

[0027] The diameter of the float 23 is smaller than the inner diameter of the pipe 100, and the diameter of the float 23 is larger than the inner diameter of the first limiting ring 21. When the float 23 lands on the first limiting ring 21, because the diameter of the float 23 is larger than the inner diameter of the first limiting ring 21, the float 23 will not fall off the first limiting ring 21 into the pipe 100, and the float 23 will not block the vent holes 210 on the first limiting ring 21.

[0028] The top end of the exhaust pipe 2 is connected to the water-air dual-purpose pump 4, and a second limiting ring 22 is fixedly installed inside the top end of the exhaust pipe 2. The diameter of the float 23 is larger than the inner diameter of the second limiting ring 22. The waterproof limit switch 5 is installed at the top end of the exhaust pipe 2. When the float 23 floats up and abuts against the second limiting ring 21, the float 23 abuts against the waterproof limit switch 5 (not shown in the figure, but those skilled in the art should understand the implementation of this structure), so that the waterproof limit switch 5 is turned on.

[0029] The solenoid valve, pressure sensor, water-air dual-purpose pump, waterproof limit switch, indicator light, display screen, and wireless communication module 9 are electrically connected to the controller 6.

[0030] The working principle of this automatic exhaust system is as follows:

[0031] The pressure sensor 3 detects the pressure inside the exhaust pipe 100 and displays it on the display screen 8. Under normal circumstances, the water pressure detected by the pressure sensor 3 is the water pressure inside the pipe 100. Since the exhaust pipe 2 is located at the highest point of the pipe 100, when there is air in the pipe 100, it will accumulate in the exhaust pipe 2. At this time, the pressure detected by the pressure sensor 3 is transmitted to the controller 6. The controller 6 determines that the pressure sensor has detected an abnormal pressure, and the indicator light 7 lights up. At this time, the controller 6 controls the water-air dual-purpose pump 4 to start pumping air. During this process, liquid will enter the exhaust pipe 2, causing the float 23 to rise until the float 23 abuts against the second limit ring 22, preventing the liquid from passing through the second limit ring 22. The float 23 also abuts against the waterproof limit switch 5, causing the waterproof limit switch 5 to conduct. The controller 6 determines that the venting of the pipe 100 and the exhaust pipe 2 is complete, and the controller 6 controls the water-air dual-purpose pump 4 to stop pumping air.

[0032] Furthermore, the aforementioned wireless communication module 9 can also be any one or a combination of several of the following: a 3G communication module, a 4G communication module, a Zigbee communication module, or an Nb-IoT communication module.

[0033] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An automatic venting structure, installed on a pipeline for conveying liquid, characterized in that: It includes a controller, a solenoid valve installed on the pipeline to control the flow of liquid in the pipeline, an exhaust pipe installed at the highest point of the pipeline and connected to the inside of the pipeline, a pressure sensor installed on the exhaust pipe to detect the pressure inside the exhaust pipe, and a water-air dual-purpose pump connected to the exhaust pipe. The bottom end of the exhaust pipe is connected to the inside of the pipe, and a first limiting ring is fixedly provided inside the bottom end of the exhaust pipe. Multiple exhaust holes are spaced apart on the first limiting ring. The exhaust pipe is equipped with a float ball. The diameter of the float ball is smaller than the inner diameter of the pipe, and the diameter of the float ball is larger than the inner diameter of the first limiting ring. When the float ball lands on the first limiting ring, the float ball will not block the exhaust holes on the first limiting ring. The top end of the exhaust pipe is connected to a water-air dual-purpose pump, and a second limiting ring is fixedly installed inside the top end of the exhaust pipe. The diameter of the float is larger than the inner diameter of the second limiting ring. The exhaust pipe is also equipped with a waterproof limit switch inside its top end. When the float rises to abut against the first limit ring, the float abuts against the waterproof limit switch, causing the waterproof limit switch to be turned on. The solenoid valve, pressure sensor, water-air dual-purpose pump, and waterproof limit switch are electrically connected to the controller.

2. The automatic exhaust structure according to claim 1, characterized in that: The density of the float is less than the density of the liquid inside the pipe.

3. The automatic exhaust structure according to claim 1, characterized in that: It also includes indicator lights; The indicator light is electrically connected to the controller.

4. The automatic exhaust structure according to claim 1, characterized in that: It also includes a display screen; The display screen is electrically connected to the controller.

5. An automatic exhaust structure according to claim 1, characterized in that: It also includes a wireless communication module; The wireless communication module is electrically connected to the controller.

Images