Desulfurization system process water double-path water source automatic switching device

Abstract

The invention relates to the technical field of water source switching, in particular to a desulfurization system process water double-path water source automatic switching device which comprises a first water inlet pipeline, a second water inlet pipeline connected to the first water inlet pipeline, a first check valve and a second check valve arranged on the first water inlet pipeline and the second water inlet pipeline respectively, and a water tank connected to the first water inlet pipeline. A water pump is arranged on the second water inlet pipeline, the first check valve and the second check valve each comprise a valve body, a valve deck, a valve cavity, a fixing frame, a valve seat and a valve element, the valve deck, the valve cavity, the fixing frame, the valve seat and the valve element are connected with the valve body, a guide rod is movably arranged on the fixing frame, a reset spring is arranged on the guide rod in a sleeving mode and located between the fixing frame and the valve element, and a flow guide hole is formed in the fixing frame. The two ends of the first check valve and the two ends of the second check valve are connected to the first water inlet pipeline and the second water inlet pipeline through connecting pieces respectively.

Description

Technical Field

[0001] The invention relates to the technical field of water source switching, in particular to a dual-path water source automatic switching device for process water of a desulfurization system. Background Art

[0002] The sealing water of each pump in the desulfurization system needs to be running at all times without interruption. Water outage will cause the pump mechanical seal to be cut off and burn out. In existing desulfurization systems, although some advanced configurations may include backup water source designs, they often rely on manual switching or simple pressure switch control, and lack a comprehensive solution that comprehensively considers water quality monitoring, pressure balance, and intelligent decision-making. The present invention targets this industry pain point and fills the market gap by integrating dual water sources, automatic control logic, and efficient maintenance design concepts, meeting the needs of modern industry for production continuity, automation, and environmentally friendly technologies. Summary of the invention

[0003] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions.

[0004] A dual-way water source automatic switching device for process water of a desulfurization system is designed, comprising a water inlet pipe 1, a water inlet pipe 2 is connected to the water inlet pipe 1, a check valve 1 and a check valve 2 are respectively arranged on the water inlet pipe 1 and the water inlet pipe 2, a water tank is connected to the water inlet pipe 1, a water pump is arranged on the water inlet pipe 2, the check valve 1 and the check valve 2 both comprise a valve body and a valve cover connected to the valve body, a valve cavity is arranged in the valve body, a fixing frame is arranged in the valve cavity, a valve seat is arranged on the inner wall of the valve body, a guide rod is movably arranged on the fixing frame, a valve core is fixed on the guide rod close to one end of the valve seat, a reset spring is sleeved on the guide between the fixing frame and the valve core, two ends of the reset spring are respectively connected to the valve core and the fixing frame, an annular groove is arranged on the side of the valve core close to one end of the valve seat, a sealing gasket is embedded in the annular groove, a diversion hole is arranged on the fixing frame, and two ends of the check valve 1 and the check valve 2 are respectively connected to the water inlet pipe 1 and the water inlet pipe 2 through a connecting piece.

[0005] Preferably, a solenoid valve is provided between the water pump and the second check valve.

[0006] Preferably, a plurality of guide posts in contact with the inner wall of the valve cavity are provided on the side surface of the valve core close to one end of the valve seat.

[0007] Preferably, a limiting block is fixed on the other end of the guide rod.

[0008] Preferably, a U-shaped groove is provided on the inner wall of the water outlet end of the valve body, both ends of the fixing frame are respectively arranged in the U-shaped groove, and a sealing ring matching therewith is provided in the U-shaped groove so that the fixing frame and the sealing ring are pressed tightly in the U-shaped groove.

[0009] Preferably, the connecting member includes fixing rings respectively fixed at both ends of the check valve 1 and the water inlet pipe 1, a rubber gasket 1 is provided between the two fixing rings, the check valve 1 and the water inlet pipe 1 are butt-jointed with each other, the two fixing rings are fixedly connected by bolts, and rubber gaskets 2 are respectively embedded at both ends of the check valve 1.

[0010] Preferably, a water supply pipe is connected to one end of the water tank, and a float valve is provided in the water tank.

[0011] Preferably, the water supply pressure in the water inlet pipe 2 is 0.65 MPA, and the water supply pressure in the water inlet pipe 1 is 0.60 MPA.

[0012] The beneficial effects of the present invention are:

[0013] 1. The automatic water source switching mechanism of the present invention can effectively deal with the failure of a single water source, ensure the continuous and stable operation of the desulfurization system, avoid equipment damage caused by the interruption of pump sealing water, and improve production safety and system reliability.

[0014] 2. The automatic switching of the present invention reduces the production interruption time caused by manual intervention, reduces the cost of manual monitoring and emergency response, and at the same time, the efficient maintenance design simplifies the equipment maintenance process and saves maintenance costs.

[0015] 3. The present invention is combined with an intelligent monitoring and control module, and the system can give early warning of water source problems, automatically adjust the water supply strategy, and realize intelligent management of the process water supply of the desulfurization system.

[0016] 4. The present invention optimizes the utilization efficiency of water resources by maintaining an appropriate reserve in the water tank, reduces the waste of water resources caused by sudden failures, and is in line with the concept of green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of a check valve 1 and a water inlet pipe 1 of the present invention;

[0019] Figure 3 yes Figure 1 A is an enlarged structural diagram;

[0020] The numbers in the figure are: 1 water supply pipe, 2 float valve, 3 water tank, 4 water inlet pipe one, 5 check valve one, 6 water inlet pipe two, 7 check valve two, 8 solenoid valve, 9 water pump, 10 valve body, 11 valve cavity, 12 guide column, 13 valve core, 14 valve seat, 15 sealing gasket, 16 guide rod, 17 fixing frame, 18 sealing ring, 19 valve cover, 20 return spring, 21 diversion hole, 22 limit block, 23 bolt, 24 fixing ring, 25 rubber gasket one, 26 rubber gasket two. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1

[0023] A dual-source automatic switching device for process water in a desulfurization system, such as Figures 1 to 3 As shown, it includes a water inlet pipe 1 4, to which a water inlet pipe 2 6 is connected, and check valves 1 5 and 2 7 are respectively provided on the water inlet pipe 1 4 and the water inlet pipe 2 6, a water tank 3 is connected to the water inlet pipe 1 4, a water supply pipe 1 is connected to one end of the water tank 3, a float valve 2 is provided in the water tank 3, when the float floats up, the valve on the water supply pipe 1 is closed, and when the float sinks, the valve on the water supply pipe 1 is opened, so that sufficient water is always maintained in the water tank 3 in case of emergency, a water pump 9 is provided in the water tank 3, and the outlet of the water pump 9 is connected to the water supply pipe 1.

[0024] A water pump 9 is provided on the water inlet pipe 2 6, and a solenoid valve 8 is provided between the water pump 9 and the check valve 2 7. When the water pump 9 fails, the solenoid valve 8 is closed to discharge the water in the water inlet pipe 2 6, so that the staff can disassemble and repair the water pump 9.

[0025] The water supply pressure in the above water inlet pipe 26 is 0.65MPA, and the water supply pressure in the water inlet pipe 14 is 0.60MPA. During operation, the check valve of the water inlet pipe 14 is supported by the water pressure of the water inlet pipe 26, and water is supplied to the water inlet pipe 26 at this time. When the water source of the water inlet pipe 26 fails, the check valve 15 of the water inlet pipe 14 automatically opens, and the check valve 27 of the water inlet pipe 26 closes automatically, thereby achieving the purpose of automatically switching the water source by using the water pressure and the check valve 15 and the check valve 27. This avoids the water outage causing the pump mechanical seal to be cut off and burnt. When one water source fails and the water is cut off, it is necessary to manually switch the water source. The models of the check valve 15 and the check valve 27 are both DN50.

[0026] Both the check valve 1 5 and the check valve 2 7 include a valve body 10 and a valve cover 19 connected to the valve body 10, a valve cavity 11 is provided in the valve body 10, a fixing frame 17 is provided in the valve cavity 11, a U-shaped groove is provided on the inner wall of the water outlet end of the valve body 10, two ends of the fixing frame 17 are respectively provided in the U-shaped groove, and a sealing ring 18 matching therewith is provided in the U-shaped groove so that the fixing frame 17 and the sealing ring 18 are pressed tightly in the U-shaped groove.

[0027] A valve seat 14 is provided on the inner wall of the valve body 10, a guide rod 16 is movably provided on the fixing frame 17, a valve core 13 is fixed on the guide rod 16 near one end of the valve seat 14, and a plurality of guide columns 12 in contact with the inner wall of the valve cavity 11 are provided on the side surface of the valve core 13 near one end of the valve seat 14. When there is water flow, the guide rod 16 slides along the fixing frame 17 to guide the movement of the valve core 13. The guide column 12 cooperates with the inner wall of the valve cavity 11 to guide the movement of the valve core 13. The double guidance makes the valve core 13 more stable when it moves left and right, avoiding the misalignment of the valve core 13 and the valve seat 14. A return spring 20 is set on the guide rod 16 between the fixing frame 17 and the valve core 13. The two ends of the return spring 20 are respectively connected to the valve core 13 and the fixing frame 17. An annular groove is opened on the side of the valve core 13 near one end of the valve seat 14. A sealing gasket 15 is embedded in the annular groove. The sealing gasket 15 is used for sealing between the valve core 13 and the valve seat 14. A limiting block 22 is fixed at the other end of the guide rod 16. A guide hole 21 is provided on the fixing frame 17, and the guide hole 21 can be used to reduce the impact of water flow on the fixing frame 17. The two ends of the check valve 1 5 and the check valve 2 7 are respectively connected to the water inlet pipe 1 4 and the water inlet pipe 2 6 through connectors. When water flows through the inlet end of the valve body 10, the valve core 13 of the check valve is pushed open from the sealing valve seat 14 under the pressure of the water flow, and the water flows into the valve cavity 11 and then outputs through the outlet end of the valve cover 19. When the water flows back from the outlet end of the valve cover 19, the valve core 13 is pressed against the sealing valve seat 14 under the elastic force of the reset spring 20, and is sealed through the sealing gasket 15, thereby preventing water from flowing back.

[0028] The connecting piece includes a fixing ring 24 fixed at both ends of the check valve 15 and the water inlet pipe 14, a rubber gasket 1 25 is arranged between the two fixing rings 24, the check valve 15 and the water inlet pipe 14 are butted against each other, the two fixing rings 24 are fixedly connected by bolts 23, and rubber gaskets 26 are respectively embedded at both ends of the check valve 15. The connection between the check valve 27 and the water inlet pipe 26 is the same as that between the check valve 15 and the water inlet pipe 14, and the above connection facilitates the disassembly and assembly between the check valve 15 and the check valve 27 and the water inlet pipe 14 and the water inlet pipe 26 respectively.

[0029] In the daily operation of the present invention, the water inlet pipe 14 is kept under normal pressure, but because the pressure of the water inlet pipe 26 is slightly higher than that of the water inlet pipe 4 (0.65MPA vs 0.60MPA), the check valve 15 is kept closed, and the water source of the water inlet pipe 26 is pressurized by the water pump 9 and flows through the solenoid valve 8 to enter the system for use. At this time, the water tank 3 automatically adjusts the water volume through the float valve 2 to maintain a certain reserve for emergency needs. When the water source of the water inlet pipe 26 fails, the water supply pressure of the line drops, and the check valve 27 is automatically closed under the action of the water pressure. At the same time, the check valve 15 on the water inlet pipe 14 is automatically opened due to the high pressure, so as to seamlessly switch to the water supply of the water inlet pipe 14, ensuring uninterrupted water supply to the desulfurization system, thereby avoiding the water outage causing the pump mechanical seal to be cut off and burned. This process does not require manual intervention and realizes automatic switching. When the water pump 9 needs to be repaired, the solenoid valve 8 will be closed to prevent the water flow in the pipe 2, so that the staff can work safely. In addition, the design of the check valve (such as DN50 model, U-groove sealing structure) not only improves the sealing performance, but also facilitates installation and disassembly. The rubber gasket enhances the sealing performance, reduces water flow impact, and improves the maintenance efficiency and service life of the system.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-source automatic switching device for process water in a desulfurization system, characterized in that: The closure of the present invention is a kind of water inlet pipe, and the closure of the present invention is a kind of water inlet pipe, and the closure of the present invention is a kind of water inlet pipe. The closure of the present invention is a kind of water inlet pipe, and the closure of the present invention is a kind of water inlet pipe. The closure of the present invention is a kind of water inlet pipe, and the closure of the present invention is a kind of water inlet pipe. The closure of the present invention is a kind of water inlet pipe, and the closure of the present invention is a kind of water inlet pipe.

2. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: A solenoid valve is provided between the water pump and the second check valve.

3. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: A plurality of guide posts in contact with the inner wall of the valve cavity are arranged on the side surface of the valve core close to one end of the valve seat.

4. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: A limiting block is fixed on the other end of the guide rod.

5. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: A U-shaped groove is provided on the inner wall of the water outlet end of the valve body, the two ends of the fixing frame are respectively arranged in the U-shaped groove, and a sealing ring matching with it is provided in the U-shaped groove so that the fixing frame and the sealing ring are pressed tightly in the U-shaped groove.

6. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: The connecting piece includes fixing rings respectively fixed at both ends of the check valve 1 and the water inlet pipe 1, a rubber gasket 1 is arranged between the two fixing rings, the check valve 1 and the water inlet pipe 1 are butt-jointed with each other, the two fixing rings are fixedly connected by bolts, and rubber gaskets 2 are respectively embedded at both ends of the check valve 1.

7. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: A water supply pipe is connected to one end of the water tank, and a float valve is arranged in the water tank.

8. The dual-source automatic switching device for process water in a desulfurization system according to claim 1, characterized in that: The water supply pressure in the water inlet pipe 2 is 0.65 MPA, and the water supply pressure in the water inlet pipe 1 is 0.60 MPA.

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