Anti-cavitation cleaning device of water treatment system

Abstract

The utility model relates to an anti-cavitation cleaning device of a water treatment system. The anti-cavitation cleaning device comprises a water inlet pipe and a water outlet pipe, the water tank is provided with a water outlet and a water inlet and connected with the water outlet pipe through the water outlet, and a water pump is arranged on the water outlet pipe and pumps the solution out of the water tank and conveys the solution to a cleaning target; the water tank is connected with a water inlet pipe through a water inlet, and the water inlet pipe returns a solution conveyed to a cleaning target to the water tank; the horizontal included angle between the water inlet pipe and the water inlet is smaller than + / -30 degrees, so that the solution flows back to the water tank in the horizontal direction or the horizontal included angle direction. The solution flows back to the water tank in the horizontal direction or the horizontal included angle direction, the direction of water flow is changed, vertical vortexes are prevented from being generated, bubbles can float in water and become shallow, the bubbles emerge from the water surface in the process of being away from the water inlet, the possibility that the bubbles are sucked into a water pump is eradicated, and therefore cavitation faults are effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an anti-cavitation cleaning device for a water treatment system. Background Art

[0002] In modern agricultural drinking water treatment projects, ultrafiltration devices are widely used to prepare drinking water. However, as the use time increases, the ultrafiltration membrane will be blocked by scaling of calcium and magnesium ions in the water or contaminated by microorganisms. Therefore, the ultrafiltration membrane needs to be regularly chemically cleaned to maintain its performance and extend its service life.

[0003] In the chemical cleaning process, a water tank is usually used to prepare the cleaning liquid. In order to ensure that the drugs can be fully dissolved and evenly mixed, a common method is to open the water inlet valve to allow the liquid in the cleaning target to flow back to the water tank for stirring and dissolving. In the prior art, the water inlet is usually located at the top of the water tank. However, since the water inlet is located at the top, the water flow entering the water inlet cannot generate enough impulse to effectively stir and dissolve the drugs, resulting in slow dissolution and mixing of the drugs, affecting the cleaning effect and efficiency. Secondly, when the water flow impacts vertically downward from the top, air is instantly brought into the water. When the liquid level in the water tank becomes low, the air is easily sucked into the water pump, resulting in cavitation in the pump. Cavitation will not only damage the water pump, but also affect the normal operation of the entire cleaning system, increasing maintenance costs and downtime.

[0004] Therefore, it is necessary to propose an anti-cavitation cleaning device for a water treatment system to solve the problem that air is brought into the water when the water flows vertically downward from the top, causing cavitation in the water pump. Utility Model Content

[0005] The utility model provides an anti-cavitation cleaning device for a water treatment system to solve the problem that air is brought into the water when water flows vertically downward from the top, causing cavitation in the water pump.

[0006] An anti-cavitation cleaning device for a water treatment system, comprising:

[0007] Inlet and outlet pipes;

[0008] A water tank, provided with a water outlet and a water inlet, the water tank is connected to the water outlet pipe through the water outlet, the water outlet pipe is provided with a water pump, the water pump extracts the solution from the water tank and delivers it to the cleaning target;

[0009] The water tank is connected to the water inlet pipe through the water inlet, and the water inlet pipe returns the solution delivered to the cleaning target to the water tank;

[0010] The horizontal angle between the water inlet pipe and the water inlet is less than ±30°, so that the solution flows back to the water tank in a horizontal direction or in a horizontal angle direction.

[0011] In one embodiment, the water inlet is disposed on the side wall of the water tank and is located above the water outlet.

[0012] In one embodiment, the water inlet and the water outlet are located on one side of the side wall of the water tank, so that a circulating liquid flow around the water tank is formed in the water tank under the combined action of the reflux solution of the water inlet and the extraction solution of the water outlet.

[0013] In one embodiment, the water outlet pipe delivers water to the water pump in a horizontal direction or in a horizontal angle direction through the water outlet, and the horizontal angle is less than ±30°.

[0014] In one embodiment, the height of the water outlet from the bottom of the water tank is set to D1, the height of the water inlet from the bottom of the water tank is set to D2, and the height of the preset highest liquid level of the water tank from the bottom of the water tank is set to D3, satisfying the following relationship: <D1<D2<D3。

[0015] In one embodiment, the anti-cavitation cleaning device of the water treatment system also includes a flow regulating pipe, one end of which is connected to the middle section of the water outlet pipe, and the other end is connected to the middle section of the water inlet pipe. When the amount of liquid used for cleaning the target is less than the liquid output of the water outlet pipe, the flow regulating pipe is opened to return excess solution to the water tank through the water inlet pipe.

[0016] In one embodiment, the flow regulating tube is provided with a control valve to control the switch of the flow regulating tube.

[0017] In one embodiment, the water outlet pipe includes a first pipe and a second pipe, the first pipe connects the water outlet and the water pump, and the second pipe connects the water pump and the cleaning target;

[0018] The first tube is provided with a first valve, and the second tube is provided with a second valve.

[0019] In one embodiment, the water tank is provided with a drain valve for draining the solution in the water tank.

[0020] In one embodiment, the water pump is provided with an exhaust port for exhausting the gas in the water pump.

[0021] The above-mentioned anti-cavitation cleaning device for a water treatment system has at least the following beneficial effects:

[0022] In the prior art, the water inlet is located at the top of the water tank, and the water flows vertically into the water tank from the top, which easily generates a vertical vortex, bringing air into a deeper position in the water. When the cleaning liquid surface becomes shallow, bubbles can easily enter the water pump and cause cavitation of the water pump. In the utility model, by returning the solution to the water tank in a horizontal direction or a horizontal angle direction, the direction of the water flow is changed, and the generation of vertical vortices is prevented, so that the bubbles float in the water and become shallow and overflow the water surface, which eliminates the possibility of bubbles being sucked into the water pump, thereby effectively preventing cavitation failures. Cavitation can damage the impeller and other components of the water pump, reducing its performance and life. By preventing cavitation, the service life of the water pump can be extended and the maintenance and replacement costs can be reduced. Secondly, the return water in the horizontal or horizontal angle direction generates lateral flow and turbulence in the water tank, which promotes the rapid and uniform dissolution and mixing of the medicine in the water tank, and improves the preparation efficiency of the cleaning solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a cleaning device for a water treatment system in the prior art;

[0025] Figure 2 A schematic diagram of an anti-cavitation cleaning device for a water treatment system according to an embodiment;

[0026] Figure 3 It is a partial enlarged view of an anti-cavitation cleaning device of a water treatment system according to one embodiment.

[0027] Reference numerals:

[0028] 10. Anti-cavitation cleaning device of water treatment system; 11. water inlet pipe; 12. water outlet pipe; 121. first pipe; 122. second pipe; 123. first valve; 124. second valve; 13. water tank; 131a. water inlet; 132a. water outlet; 14. water pump; 15. flow regulating pipe; 151. control valve; 16. drain valve. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] refer to Figure 2 and Figure 3 The utility model provides an anti-cavitation cleaning device 10 of a water treatment system, comprising: a water inlet pipe 11 and a water outlet pipe 12; a water tank 13, provided with a water outlet 132a and a water inlet 131a, the water tank 13 is connected to the water outlet pipe 12 through the water outlet 132a, and a water pump 14 is arranged on the water outlet pipe 12, the water pump 14 extracts the solution from the water tank 13 and transports it to the cleaning target; the water tank 13 is connected to the water inlet pipe 11 through the water inlet 131a, and the water inlet pipe 11 returns the solution transported to the cleaning target to the water tank 13; the horizontal angle between the water inlet pipe 11 and the water inlet 131a is less than ±30°, so that the solution returns to the water tank 13 in the horizontal direction or in the horizontal angle direction.

[0033] refer to Figure 1In the prior art, the water inlet 131a is located at the top of the water tank 13, and the water flows vertically into the water tank 13 from the top, which easily generates a vertical vortex, brings air into the deeper position of the water surface of the water tank 13, and is easily sucked into the water pump 14 to cause cavitation of the water pump 14. In the utility model, the water tank 13 can be a column or a cube. The water inlet 131a can be set in the middle of the side wall of the water tank 13 to ensure that the water flow can enter the water tank 13 in a horizontal direction or a nearly horizontal direction to avoid vertical impact. The water inlet pipe 11 is used to connect the cleaning target with the water inlet 131a of the water tank 13. The water inlet pipe 11 can use an elbow or a swivel joint near the water tank 13 to guide the water flow to the horizontal or nearly horizontal direction of the water inlet 131a. The elbow and the joint should be made of pressure-resistant and corrosion-resistant materials to ensure long-term reliable use. By returning the solution to the water tank 13 in a horizontal direction or a horizontal angle direction, the direction of the water flow is changed, the generation of vertical vortices is prevented, and the bubbles become shallower and overflow the water surface in the process of moving away from the water inlet, which eliminates the possibility of bubbles being sucked into the water pump 14, thereby effectively preventing cavitation failure. Cavitation can damage the impeller and other components of the water pump 14, reducing its performance and life. By preventing cavitation, the service life of the water pump 14 can be extended and the maintenance and replacement costs can be reduced. Secondly, the return water in the horizontal or horizontal angle direction generates lateral flow and turbulence in the water tank 13, which promotes the rapid and uniform dissolution and mixing of the medicine in the water tank 13, and improves the preparation efficiency of the cleaning solution.

[0034] Specifically, the water outlet pipe 12 includes a first pipe 121 and a second pipe 122, the first pipe 121 connects the water outlet 132a with the water pump 14, and the second pipe 122 connects the water pump 14 with the cleaning target; the first pipe 121 is provided with a first valve 123, and the second pipe 122 is provided with a second valve 124. Among them, the first valve 123 is arranged on the first pipe 121, and is used to control the water flow from the water tank 13 to the water pump 14. The second valve 124 is arranged on the second pipe 122, and is used to control the water flow from the water pump 14 to the cleaning target. The setting of the first valve 123 and the second valve 124 enables the operator to control the water flow from the water tank 13 to the water pump 14 and from the water pump 14 to the cleaning target respectively. This setting can flexibly adjust the water flow of each link according to different cleaning requirements and operating conditions, ensuring that the system operates under the best working conditions. Secondly, when performing system maintenance or overhaul, the first valve 123 and the second valve 124 can be closed to isolate the water pump 14 from the system, so that overhaul and component replacement can be performed conveniently and safely, thereby reducing downtime.

[0035] Furthermore, the water inlet 131a is provided on the side wall of the water tank 13 and is located above the water outlet 132a. Since the water inlet 131a is higher than the water outlet 132a, when water flows into the water tank 13, there will be no significant water flow disturbance near the water outlet 132a. This allows the bubbles to float upward in the water tank 13, away from the suction port of the water pump 14, reducing the risk of the bubbles being sucked into the water pump 14 and thus preventing cavitation failure.

[0036] Furthermore, the water inlet 131a and the water outlet 132a are located on the same side of the side wall of the water tank 13, so that under the combined action of the reflux solution at the water inlet 131a and the solution pumped away at the water outlet 132a, a circulating liquid flow surrounding the water tank 13 is formed in the water tank 13. When the water inlet 131a and the water outlet 132a are located on the same side of the side wall of the water tank 13, the impact force of the reflux water at the water inlet 131a and the suction force of the water pump 14 act together, enabling the reflux solution at the water inlet 131a to circulate. This circulating flow can continuously stir the liquid in the water tank 13, ensuring that the pharmaceutical solution is quickly and evenly mixed in the water tank 13 and improving the preparation efficiency of the cleaning solution. Secondly, the lateral water flow at the water inlet 131a flushes the bubbles away from the water outlet 132a and they will not settle at the water outlet 132a. When the liquid level drops, no vertical vortex is generated, causing the bubbles to gradually float to the water surface during the process of moving away from the water inlet 131a and unable to reach near the water outlet 132a, preventing the water pump 14 from sucking in air and causing cavitation failure. In some embodiments, the water outlet 132a can be vertically connected downward to the water pump 14 to ensure that the solution in the water tank 13 can be completely discharged through the water outlet 132a.

[0037] In the embodiment of the present utility model, the outlet pipe 12 is transported to the water pump 14 in a horizontal direction or a horizontal included angle direction through the water outlet 132a, and the horizontal included angle is less than ±30°. The outlet pipe 12 and the inlet pipe 11 are installed in parallel in the water tank 13, also adopting a horizontal or nearly horizontal direction, ensuring that the water flows into and out of the water tank 13 horizontally, forming a lateral circulating flow and effectively preventing vertical vortices and bubble suction.

[0038] Furthermore, the height of the water outlet 132a from the bottom of the water tank 13 is set as D1, the height of the water inlet 131a from the bottom of the water tank 13 is set as D2, and the height of the preset highest liquid level of the water tank 13 from the bottom of the water tank 13 is set as D3, satisfying the following relational expression: 0 < D1 < D2 < D3. The water inlet 131a is set higher than the water outlet 132a, and the horizontally or nearly horizontally flowing water promotes the bubbles to float upward and away from the water outlet 132a, making it difficult for the bubbles to be sucked into the water pump 14. Since the water inlet 131a is provided below the preset highest liquid level, the possibility of bubbles entering the system can be further reduced.

[0039] Furthermore, the anti-cavitation cleaning device 10 of the water treatment system also includes a flow regulating pipe 15, one end of which is connected to the middle section of the outlet pipe 12, and the other end is connected to the middle section of the inlet pipe 11. When the amount of liquid used for cleaning the target is less than the amount of liquid discharged from the outlet pipe 12, the flow regulating pipe 15 is opened to return the excess solution to the water tank 13 through the inlet pipe 11. One end of the flow regulating pipe 15 is connected to the second pipe 122 of the outlet pipe 12, and the excess solution is returned to the water tank 13 through the flow regulating pipe 15 to avoid excessive system pressure or insufficient liquid. Secondly, returning the excess solution to the water tank 13 can reduce the waste of cleaning liquid and improve the economy and energy efficiency of the cleaning process.

[0040] Furthermore, the flow regulating pipe 15 is provided with a control valve 151 to control the opening and closing of the flow regulating pipe 15. By setting the control valve 151 on the flow regulating pipe 15, the reflux amount can be accurately controlled to ensure the optimal operation of the system under various working conditions. When the amount of liquid used for cleaning the target is less than the amount of liquid discharged from the outlet pipe 12, the control valve 151 is opened to return the excess solution to the water tank 13 through the inlet pipe 11, thereby increasing the applicability of the cleaning device to various cleaning flow rates and improving the efficiency of liquid dissolution.

[0041] Furthermore, the water tank 13 is provided with a drain valve 16 for draining the solution in the water tank 13. The setting of the drain valve 16 makes the draining operation more flexible, and the flow and stop of the liquid can be controlled as needed. Such a setting facilitates the emptying operation of the liquid in the water tank 13, making the use of the cleaning device more convenient and efficient. Secondly, the setting of the drain valve 16 can flexibly control the flow direction of the liquid, and the liquid can be discharged into a designated drainage pipe or container, which facilitates the processing and disposal of the liquid and improves the operational flexibility of the cleaning system.

[0042] The water pump 14 is provided with an exhaust port (not shown) for removing the gas in the water pump 14. The exhaust port can effectively remove the gas in the water pump 14 to prevent the gas from accumulating in the pump to form an air chamber. The air chamber may cause the pumping efficiency of the pump to decrease, and even cause abnormal operation or failure of the pump. Therefore, the setting of the exhaust port helps to reduce the risk of the air chamber and ensure the normal operation of the water pump 14. The gas in the water pump 14 will affect the flow of water and the pumping efficiency of the pump. Expelling the gas through the exhaust port can reduce the situation where the water flow is obstructed by the gas, keep the water flow unobstructed, and improve the pumping efficiency of the water pump 14. The exhaust port of the water pump 14 is only manually loosened and opened before the mixing of the materials. When there is a continuous water flow, the exhaust valve is tightened to close the exhaust port. The gas accumulated in the water pump 14 may cause problems such as overheating of the pump and increased vibration, thereby shortening the service life of the equipment. Timely exhausting the gas through the exhaust port can reduce the occurrence of these problems and extend the service life of the water pump 14 and related equipment.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An anti-cavitation cleaning device for a water treatment system, characterized in that: include: Inlet and outlet pipes; A water tank, provided with a water outlet and a water inlet, the water tank is connected to the water outlet pipe through the water outlet, the water outlet pipe is provided with a water pump, the water pump extracts the solution from the water tank and delivers it to the cleaning target; The water tank is connected to the water inlet pipe through the water inlet, and the water inlet pipe returns the solution delivered to the cleaning target to the water tank; The horizontal angle between the water inlet pipe and the water inlet is less than ±30°, so that the solution flows back to the water tank in a horizontal direction or in a horizontal angle direction; The water inlet is arranged on the side wall of the water tank and is located above the water outlet; The water inlet and the water outlet are located on one side of the side wall of the water tank, so that a circulating liquid flow around the water tank is formed in the water tank under the combined action of the solution returned by the water inlet and the solution drawn out by the water outlet; The water outlet pipe delivers water to the water pump in a horizontal direction or in a horizontal angle direction through the water outlet, and the horizontal angle is less than ±30°.

2. The anti-cavitation cleaning device for a water treatment system according to claim 1, characterized in that: The height of the water outlet from the bottom of the water tank is set to D1, the height of the water inlet from the bottom of the water tank is set to D2, and the height of the preset highest liquid level of the water tank from the bottom of the water tank is set to D3, satisfying the following relationship: <D1<D2<D3。 3. The anti-cavitation cleaning device for a water treatment system according to claim 1, characterized in that: The anti-cavitation cleaning device of the water treatment system also includes a flow regulating pipe, one end of which is connected to the middle section of the water outlet pipe, and the other end is connected to the middle section of the water inlet pipe. When the amount of liquid used for cleaning the target is less than the liquid output of the water outlet pipe, the flow regulating pipe is opened to return excess solution to the water tank through the water inlet pipe.

4. The anti-cavitation cleaning device for a water treatment system according to claim 3, characterized in that: The flow regulating tube is provided with a control valve to control the switch of the flow regulating tube.

5. The anti-cavitation cleaning device for a water treatment system according to any one of claims 1 to 4, characterized in that: The water outlet pipe includes a first pipe and a second pipe, the first pipe connects the water outlet and the water pump, and the second pipe connects the water pump and the cleaning target; The first tube is provided with a first valve, and the second tube is provided with a second valve.

6. The anti-cavitation cleaning device for a water treatment system according to any one of claims 1 to 4, characterized in that: The water tank is provided with a drain valve for draining the solution in the water tank.

7. The anti-cavitation cleaning device for a water treatment system according to any one of claims 1 to 4, characterized in that: The water pump is provided with an exhaust port for exhausting the gas in the water pump.

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