Vacuum water diversion system

Abstract

The utility model discloses a vacuum water diversion system. The vacuum water diversion system comprises a filtering type radio frequency water treatment device, a circulating water pool, a vacuum water diversion device, a water suction pump, a cooling tower, a Y-shaped pipeline filter and a water diversion round tank column body, the vacuum water diversion device is composed of two small vacuum pumps, a steam-water separator, an electric contact vacuum meter, a temperature transmitter, an electromagnetic valve and a matched pipeline valve. The water diversion round tank column body can ensure that the water suction pump is filled with water, the problem of pump sealing damage caused by water shortage when the water suction pump is started at the moment is solved, and the equipment failure rate is greatly reduced. And meanwhile, the maintenance workload of maintenance personnel can be reduced, the equipment failure rate is reduced, the water quality of the working solution of the water-ring vacuum pump is improved, and the formation of scale in the vacuum pump and the corrosion to the internal structure of the pump body are reduced.

Description

Technical Field

[0001] The utility model relates to the field of water treatment equipment, in particular to a vacuum water intake system. Background Technique

[0002] The negative pressure required for the production of packaging equipment in the cigarette factory's cigarette making and packing workshop is supplied centrally. The stability of the negative pressure is related to the normal production of the entire workshop. Most of the tobacco industry uses water ring vacuum pumps to provide vacuum negative pressure. The water in the water ring vacuum pump not only forms a water ring as the working fluid to generate negative pressure, but also plays a role in cooling the pump body. Too high water temperature will cause water evaporation, and the negative pressure working condition will further exacerbate water evaporation and vaporization, resulting in too much water vapor in the pump body. When the water ring vacuum pump inhales too much water vapor, the pumping rate will decrease, and the ultimate vacuum degree will also decrease. The output capacity of the vacuum pump decreases with the increase of water temperature. When the water temperature exceeds 40°C, it will also exacerbate the fouling in the pump body. Therefore, when the water temperature in our factory's vacuum system reaches 40°C in summer, it is necessary to frequently supplement tap water to reduce the water temperature, which consumes a lot of water and the output vacuum degree of the vacuum pump decreases, seriously affecting the performance of the vacuum pump. At the same time, the vaporization bubbles formed by too high water temperature will cause impact on the impeller of the vacuum pump due to breaking, and at the same time cause cavitation on the pump shell of the vacuum pump. In severe cases, the pump shell will be corroded through and leakage will occur.

[0003] In order to ensure the stable operation of the vacuum pump, a set of vacuum cooling system is now configured. However, there are mainly the following two problems in the actual use process:

[0004] First, the failure rate of the water pump is relatively high. Especially when starting up again after shutdown, the seal between the pump shell and the pump core of the water pump is not tight, resulting in pressure relief of the vacuum system; the main reason for the water pump to run without water is that the water pump core is dry-ground. The water pump runs without water because there is too much silt or debris in the circulating water tank, resulting in the filter screen of the bottom valve connected to the circulating water tank being blocked or not closed tightly, and the water quality of the circulating water is poor with a high hydrochloride content, which is extremely easy to cause dynamic and static plane corrosion of the pump shell and the pump core, making the sealing effect worse, thus causing air leakage in the water pump; when starting up for the second time, air leakage in the water pump and the bottom valve not being closed tightly will cause the water pump to be unable to effectively absorb circulating water, and the high-speed operation of the water pump generates high temperature in a short time, resulting in rapid damage to the pump core seal of the water pump.

[0005] The technology adopted in the existing Chinese invention patent (CN201910656869.4) inclines a filter screen plate inside the vacuum water tank. The filter plate can block part of the silt and debris, but it cannot completely filter the hydrochloride in the circulating water. The water pump is still very easy to scale, resulting in a still high failure rate; and this scheme cannot automatically replenish water and exhaust steam, and manual water addition and steam exhaust are still required for the water intake and steam exhaust of the water pump, greatly reducing the reliability and safety of the vacuum drainage system.

[0006] Second, the water in the circulating water tank is hard water, containing a large amount of mineral salts such as calcium and magnesium. When heated, these salts precipitate and adhere to the metal surface to form scale. At the same time, after running for a period of time, algae and microorganisms will grow in the water, and these microorganisms will also corrode the impeller, the sealing end face of the pump body, and the sealing end face of the sea valve in the water tank. Summary of the Invention

[0007] The purpose of the present utility model is to design a vacuum water intake system to solve the above problems.

[0008] The present utility model realizes the above purpose through the following technical solutions:

[0009] The present utility model provides a vacuum water intake system, which includes a circulating water tank, a water pump, a vacuum water intake device, a cooling tower, and a water treatment device. Water enters the water treatment device from the cooling tower through a water pipe. After treatment, the water then enters the circulating water tank through the water pipe. The circulating water tank is connected to the water pump and the vacuum water intake device through water pipes. Among them, the water pipe connected to the vacuum water intake device is led out from the water pipes of the circulating water tank and the water pump. The water pump then pumps the water into the cooling tower through a water pipe for use.

[0010] As a preference of the present utility model, the water treatment device is a filtering type radio frequency water treatment device.

[0011] As a preference of the present utility model, the vacuum water intake device includes two mutually backup water intake vacuum pumps, water pipes, air pipes, a steam-water separator, a temperature transmitter, a solenoid valve, and supporting pipeline valves.

[0012] As a preference of the present utility model, a Y-type pipeline filter is also provided between the circulating water tank and the water pump to further filter impurities in the water body and prevent foreign objects from entering the water intake vacuum pump, causing damage to the water intake vacuum pump.

[0013] As a preference of the present utility model, a water intake round tank cylinder is also provided between the water pump and the Y-type pipeline filter. When the water pump is closed, the water intake round tank cylinder is always filled with water. When the vacuum gauge reaches the target vacuum degree, the water level in the water intake round tank cylinder is higher than the water level in the water pump, ensuring that the water pump is filled with water. At this time, when the water pump is started, the problem of pump seal damage caused by water shortage will not occur, greatly reducing the equipment failure rate.

[0014] As a preference of the present utility model, the steam-water separator adopts a horizontal steam-water separator and is equipped with a liquid level gauge. The liquid level gauge is equipped with high and low liquid level switches. When the low liquid level makes the make-up water solenoid valve open for water make-up, the high liquid level makes the make-up water solenoid valve close, always maintaining a stable liquid level in the separator to ensure a constant liquid level water supply for the water intake vacuum pump.

[0015] As an optimization of the present utility model, the steam-water separator is also equipped with water temperature control, the purpose of which is to ensure the stable operation of the priming vacuum pump. The water temperature is controlled by a temperature transmitter and adjusted by a makeup water solenoid valve on the steam-water separator. If the water temperature is too high, the makeup water valve is opened to supplement normal temperature tap water for cooling.

[0016] As an optimization of the present utility model, the steam-water separator is also provided with a bypass. The function of the bypass is for manual makeup water before startup and in case of problems with the solenoid valve, so as not to affect the normal use of the priming vacuum pump due to solenoid valve problems.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. The sea valve in the original cooling system's circulating water tank is cancelled, saving the spare part maintenance cost, and there is no need to regularly clean the filter screen and internal sealing end face of the sea valve, thus reducing the maintenance workload of maintenance personnel.

[0019] 2. After adopting the vacuum priming device, it can ensure that when the water pump starts, the inlet pipeline is filled with water and there is no air, completely solving the problem that the pump seal is damaged due to water shortage in the water pump, and greatly reducing the equipment failure rate.

[0020] 3. Adding water treatment facilities greatly improves the water quality of the working fluid of the water ring vacuum pump, reducing the formation of water scale in the vacuum pump and the corrosion of the internal structure of the pump body. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the vacuum priming system of the present utility model.

[0022] Figure 2 It is a working schematic diagram of the vacuum priming system of the present utility model.

[0023] Figure 3 It is a top view of the vacuum priming device in the vacuum priming system of the present utility model.

[0024] Figure 4 It is a side view of the vacuum priming device in the vacuum priming system of the present utility model.

[0025] In the figure: 1 - circulating water tank, 2 - Y-type pipeline filter, 3 - water pump, 4 - vacuum priming device, 5 - cooling tower, 6 - water treatment device, 7 - vacuum gauge, 8 - priming cylindrical tank, 9 - water pipe, 10 - vacuum pump, 11 - air pipe. Detailed Description of the Invention

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the utility model product is customarily placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "connect" should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] The following will specifically describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0033] As shown in the attached Figures 1-4As shown in the figure, this embodiment provides a vacuum water intake system, which includes a circulating water tank 1, a water pump 3, a vacuum water intake device 4, a cooling tower 5, and a water treatment device 6. Water enters the water treatment device 6 from the cooling tower 5 through a water pipe 9. After treatment, the water enters the circulating water tank 1 through the water pipe 9 again. The circulating water tank 1 is connected to the water pump 3 and the vacuum water intake device 4 through the water pipe 9. Among them, the water pipe 9 connected to the vacuum water intake device 4 is led out from the water pipes 9 of the circulating water tank 1 and the water pump 3. The water pump 3 then pumps water into the cooling tower 5 through the water pipe 9 for use.

[0034] As a preferred embodiment of the present utility model, the water treatment device 6 is a filtration type radio frequency water treatment device.

[0035] As a preferred embodiment of the present utility model, the vacuum water intake device 4 includes two mutually backup water intake vacuum pumps 10, a water pipe 9, an air pipe 11, a steam-water separator, a temperature transmitter, a solenoid valve, and supporting pipeline valves.

[0036] As a preferred embodiment of the present utility model, a Y-type pipeline filter 2 is further provided between the circulating water tank 1 and the water pump 3 to further filter impurities in the water body and prevent foreign objects from entering the water intake vacuum pump 10, causing damage to the water intake vacuum pump 10.

[0037] As a preferred embodiment of the present utility model, a water intake cylindrical tank 8 is further provided between the water pump 3 and the Y-type pipeline filter 2. When the water pump 3 is closed, the water intake cylindrical tank 8 keeps filling with water. When the vacuum gauge 7 reaches the target vacuum degree, the water level in the water intake cylindrical tank 8 is higher than the water level in the water pump 3, ensuring that the water pump 3 is full of water. At this time, when the water pump 3 is started, the problem of pump seal damage caused by water shortage will not occur, greatly reducing the equipment failure rate.

[0038] As a preferred embodiment of the present utility model, the steam-water separator adopts a horizontal steam-water separator and is equipped with a liquid level gauge. The liquid level gauge is equipped with high and low liquid level switches. When the low liquid level makes the water replenishment solenoid valve open for water replenishment, the high liquid level makes the water replenishment solenoid valve close, always maintaining a stable liquid level in the separator to ensure the constant liquid level water supply for the water intake vacuum pump 10.

[0039] As a preferred embodiment of the present utility model, there is also water temperature control on the steam-water separator, the purpose of which is to ensure the stable operation of the water intake vacuum pump 10. The water temperature is controlled by the temperature transmitter to adjust the water replenishment solenoid valve on the steam-water separator. If the water temperature is too high, the water replenishment valve is opened to supplement normal temperature tap water to cool down.

[0040] As a preferred embodiment of the present utility model, the steam-water separator is also provided with a bypass. The function of the bypass is for manual water replenishment before startup and manual water replenishment when there is a problem with the solenoid valve, so that the normal use of the water intake vacuum pump 10 will not be affected due to solenoid valve problems.

[0041] Working principle of the vacuum water priming device 4:

[0042] 1. Before starting the vacuum water priming device 4, close the electric valve at the outlet of the water pump, supply clear water to the steam-water separator, open the water supply valve to provide working water for the water priming vacuum pump 10, and automatically select and start the water priming vacuum pump 10.

[0043] 2. The gas in the starting pump and the suction pipeline is discharged to the atmosphere through the valve, the air pipe 11 and the water priming vacuum pump 10.

[0044] 3. When the system detects that a vacuum is formed in the water pump casing and it is filled with water, stop the water priming vacuum pump 10, give a signal to start the water pump 3, and at the same time open the electric valve at the outlet of the water pump 3.

[0045] Automatic operation mode of the vacuum water priming system:

[0046] 1. Judge the liquid level of the circulating water tank 1. If the liquid level is insufficient, the system opens the make-up water electric valve to make up water to the predetermined liquid level height.

[0047] 2. The system will first close the electric valve at the outlet of the corresponding water pump 3, and then start the vacuum water priming device 4. The vacuum water priming device 4 has two water priming vacuum pumps 10. When in use, the control system randomly selects, or selects one of the water priming vacuum pumps 10 to start according to the set rules, and the other is used as a standby. When one of them is damaged or cannot be started, the control system automatically selects the other water priming vacuum pump 10 to start.

[0048] 3. When the control system detects that a vacuum is formed and the pipe is filled with water at the inlet of the water pump 3 through the vacuum gauge 7, the water priming vacuum pump 10 stops working, the control system gives a signal to start the water pump 3, and at the same time opens the electric valve at the outlet of the water pump 3.

[0049] 4. The system starts the water pump 3 to send the water in the circulating water tank 1 to the cooling tower 5 for cooling. The system will determine whether to start the fan of the cooling tower 5 according to the water temperature. We generally set it to 26 degrees. When the temperature is higher than the set temperature, the fan of the cooling tower 5 will be automatically started, and when the temperature is lower than the set temperature, the fan will not be started.

[0050] 5. The system starts the water treatment device 6 to perform on-line water quality treatment on the water cooled by the cooling tower 5. The impurities are discharged through the sewage outlet, and the filtered water flows into the inlet of the circulating water tank 1.

[0051] Although the present invention has been described here with reference to the explanatory embodiments of the present invention, the above embodiments are only the preferred embodiments of the present invention. The embodiments of the present invention are not limited by the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, and these modifications and embodiments will fall within the scope of the principles and spirit disclosed in this application.

Claims

1. A vacuum water diversion system, characterized in that: It includes a circulating water tank (1), a water pump (3), a vacuum priming device (4), a cooling tower (5), and a water treatment device (6). Water enters the water treatment device (6) from the cooling tower (5) via a water pipe (9). After treatment, the water enters the circulating water tank (1) again through the water pipe (9). The circulating water tank (1) is connected to the water pump (3) and the vacuum priming device (4) through the water pipe (9). Among them, the water pipe (9) connected to the vacuum priming device (4) is led out from the water pipes (9) of the circulating water tank (1) and the water pump (3). The water pump (3) then pumps the water into the cooling tower (5) through the water pipe (9) for use.

2. The vacuum water intake system according to claim 1, wherein: The water treatment device (6) is a filtering type radio frequency water treatment device.

3. The vacuum water diversion system according to claim 1 or 2, characterized in that: The vacuum priming device (4) includes two mutually standby priming vacuum pumps (10), a water pipe (9), an air pipe (11), a steam-water separator, a temperature transmitter, a solenoid valve, and supporting pipeline valves.

4. The vacuum water intake system according to claim 3, characterized in that: A Y-type pipeline filter (2) is also provided between the circulating water tank (1) and the water pump (3).

5. The vacuum water diversion system according to claim 4, characterized in that: A priming round tank cylinder (8) is also provided between the water pump (3) and the Y-type pipeline filter (2).

6. The vacuum water diversion system according to claim 4 or 5, characterized in that: The steam-water separator adopts a horizontal steam-water separator and is equipped with a liquid level gauge, and the liquid level gauge is equipped with high and low liquid level switches.

7. The vacuum water intake system according to claim 4 or 5, characterized in that: There is also water temperature control on the steam-water separator.

8. The vacuum water diversion system according to claim 4 or 5, characterized in that: The steam-water separator is also provided with a bypass.

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