Pressure-stabilizing water supply device for water softening equipment

Abstract

The pressure stabilizing water supply device for the water softening equipment comprises a water inlet pipe, a water inlet adjusting valve, a pressure stabilizing water tank, a liquid level meter, an emptying valve, a pressure transmitter and a water outlet pipe, the water inlet pipe is communicated with the upper portion of the pressure stabilizing water tank, the water inlet adjusting valve is arranged on the water inlet pipe, and the water outlet pipe is communicated with the lower portion of the pressure stabilizing water tank. An upper valve of the liquid level meter is communicated with the upper portion of the pressure stabilizing water tank, a lower valve of the liquid level meter is communicated with the lower portion of the pressure stabilizing water tank, and the emptying valve and the pressure transmitter are communicated with the top of the pressure stabilizing water tank. The liquid level meter and the water inlet adjusting valve are interlocked, and the pressure transmitter and the water inlet adjusting valve are interlocked. The liquid level of the pressure stabilizing water tank is kept through the liquid level meter and the water inlet adjusting valve, the pressure of the pressure stabilizing water tank is kept through interlocking of the pressure transmitter and the water inlet adjusting valve, and therefore the original pressure of a tap water system is utilized, a pressure stabilizing water pump is not needed, and the accurate, stable, energy-saving and cost-reducing pressure stabilizing water supply effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial production, in particular to a voltage-stabilizing water supply device for a soft water equipment. Background Art

[0002] Fully automatic soft water equipment is widely used in the feed water softening of boilers. Whether imported or domestic, the optimal inlet water pressure is 0.3MPa, generally required to be between 0.28 - 0.32MPa. The smaller the fluctuation range of the inlet water pressure, the closer it is to the optimal inlet water pressure value, the more normal the operation of each process of the soft water equipment, and the more stable the soft water quality.

[0003] The technological processes such as backwashing, salt absorption, replacement, slow flushing, rapid normal flushing, salt tank re-filling, and water production operation of fully automatic softening water equipment are all affected by the inlet water pressure, specifically as follows:

[0004] 1. Influence of backwashing: If the flow rate is lower than the required parameter, the compaction layer cannot be fully loosened, and dirt cannot be effectively removed, which has a great impact on the resin regeneration quality. On the contrary, if the flow rate is higher than the required parameter, normal resin particles will be washed away, reducing the resin utilization rate.

[0005] 2. Influence of salt absorption: If the pressure is too low, the built-in ejector cannot work normally, and the brine cannot be sucked into the resin tank, and the resin cannot be effectively regenerated. On the contrary, if the inlet water pressure is too high, the sucked brine is excessive, causing unnecessary waste.

[0006] 3. Influence of replacement: If the pressure is too low, it will affect the quality of further resin regeneration and the effect of preliminary cleaning.

[0007] 4. Influence of normal flushing: If the pressure is too low, the resin layer cannot be effectively cleaned, resulting in the excessive content of chloride ions and hardness in the softened water, causing serious corrosion and scaling of the boiler and its system, and reducing the service life. On the contrary, over-flushing will occur, resulting in the waste of qualified softened water.

[0008] 5. Influence of salt tank re-filling: If the pressure is too low, the amount of water injected into the salt tank cannot meet the need for dissolving salt, and the working condition of the salt absorption (regeneration) program will be affected. On the contrary, if the pressure is too high, the salt tank will be over-filled with water, causing the brine to overflow from the tank, resulting in waste.

[0009] 6. Impact on water production operation: The water production operation process of the fully automatic soft water equipment is the process of producing water. Generally, the greater the inlet water flow rate, the larger the resin working layer required for ion exchange, and the resin utilization rate will decrease, but the water production capacity will increase. On the contrary, the smaller the inlet water flow rate, the smaller the resin working layer required, the resin utilization rate increases, but the water production capacity decreases. An overly small flow rate will cause the raw water to only exchange ions with the resin surface, and the water cannot enter the resin interior for exchange. Usually, only 20% of the exchange capacity is provided on the resin surface, and 80% of the exchange capacity can be provided inside the resin. A reasonable flow rate is very important for improving the production capacity and exchange capacity of the equipment.

[0010] Therefore, the failure of the inlet water pressure to meet the technical index requirements of the fully automatic soft water equipment is an important reason affecting the normal operation of the fully automatic soft water equipment and deteriorating the soft water quality.

[0011] The existing soft water pressure stabilizing devices usually need to be realized through a pressure stabilizing water pump. However, it is impossible for the flow rate of the pressure stabilizing water pump to exactly match the treatment capacity of the soft water equipment, and the pressure stabilizing water pump itself also has attenuation, so it is very difficult to maintain the system pressure accurately and stably. Moreover, due to the secondary transportation using the pressure stabilizing water pump, it causes pressure loss in the front system pipeline, increasing the operation cost. At the same time, the power of the pressure stabilizing water pump is generally 2.5 - 3KW, increasing the annual power consumption by 18,000 degrees, that is, increasing the energy consumption. Utility Model Content

[0012] In order to solve the above problems of the existing technology, the present utility model provides a pressure stabilizing water supply device for soft water equipment, achieving the pressure stabilizing water supply effect of accurate stability, energy saving and cost reduction.

[0013] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0014] In the first aspect, the present utility model provides a pressure stabilizing water supply device for soft water equipment, including an inlet pipe, an inlet water regulating valve, a pressure stabilizing water tank, a liquid level gauge, a vent valve, a pressure transmitter and an outlet pipe. The inlet pipe is communicated with the upper part of the pressure stabilizing water tank. The inlet water regulating valve is arranged on the inlet pipe. The outlet pipe is communicated with the lower part of the pressure stabilizing water tank. The upper valve of the liquid level gauge is communicated with the upper part of the pressure stabilizing water tank, and the lower valve of the liquid level gauge is communicated with the lower part of the pressure stabilizing water tank. The vent valve and the pressure transmitter are communicated with the top of the pressure stabilizing water tank;

[0015] The liquid level gauge and the inlet water regulating valve are interlocked, and the pressure transmitter and the inlet water regulating valve are interlocked.

[0016] The beneficial effects of the present utility model are as follows: The liquid level of the pressure stabilizing water tank is maintained by a liquid level gauge and a water inlet regulating valve, and the pressure of the pressure stabilizing water tank is maintained by the interlock of a pressure transmitter and the water inlet regulating valve, thereby utilizing the original pressure of the tap water system without a pressure stabilizing water pump, thus achieving the effect of accurate and stable pressure stabilizing water supply with energy conservation and cost reduction.

[0017] Optionally, it further includes an air inlet valve, one end of the air inlet valve is communicated with the upper part of the pressure stabilizing water tank, and the other end of the air inlet valve is communicated with an air pipe for conveying compressed air;

[0018] The air inlet valve is interlocked with the pressure transmitter.

[0019] According to the above description, the conveying of compressed air is increased, so that the water pressure in the pressure stabilizing water tank can be more quickly and stably within the required range.

[0020] Optionally, it further includes a water inlet pressure gauge, and the water inlet pressure gauge is arranged on the water inlet pipe.

[0021] Optionally, it further includes a first water inlet stop valve and a second water inlet stop valve, and the first water inlet stop valve and the second water inlet stop valve are arranged on the water inlet pipe and are respectively located in front of and behind the water inlet regulating valve.

[0022] Optionally, it further includes a water outlet ball valve, and the water outlet ball valve is arranged on the water outlet pipe.

[0023] Optionally, it further includes a sewage valve, and the sewage valve is communicated with the lower part of the pressure stabilizing water tank. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of a pressure stabilizing water supply device for a water softening device according to an embodiment of the present utility model;

[0025]

Description of the Reference Numerals

[0026] 1. Water inlet pipe; 2. Water inlet regulating valve; 3. Pressure stabilizing water tank; 4. Liquid level gauge; 5. Vent valve; 6. Pressure transmitter; 7. Water outlet pipe; 8. Water inlet pressure gauge; 9. First water inlet stop valve; 10. Second water inlet stop valve; 11. Water outlet ball valve; 12. Sewage valve; 13. Processor; 14. Air inlet valve. Detailed Embodiments

[0027] To better understand the above technical solution, the exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present utility model and to convey the scope of the present utility model completely to those skilled in the art.

[0028] Embodiment 1

[0029] Please refer to Figure 1 , the pressure-stabilizing water supply device for the water softening equipment provided in this embodiment includes a water inlet pipe 1, a water inlet regulating valve 2, a pressure-stabilizing water tank 3, a liquid level gauge 4, a drain valve 5, a pressure transmitter 6, a water outlet pipe 7, a water inlet pressure gauge 8, a first water inlet stop valve 9, a second water inlet stop valve 10, a water outlet ball valve 11, a sewage discharge valve 12, and an air inlet valve 14.

[0030] Specifically, the water inlet pipe 1 is communicated with the upper part of the pressure-stabilizing water tank 3, and the water inlet regulating valve 2, the water inlet pressure gauge 8, the first water inlet stop valve 9, and the second water inlet stop valve 10 are all arranged on the water inlet pipe 1. Referring to Figure 1 , it can be seen that the first water inlet stop valve 9 and the second water inlet stop valve 10 are located before and after the water inlet regulating valve 2.

[0031] Specifically, the water outlet pipe 7 is communicated with the lower part of the pressure-stabilizing water tank 3, and the water outlet ball valve 11 is arranged on the water outlet pipe 7 to control the on-off of the water outlet flow.

[0032] Specifically, the upper valve of the liquid level gauge 4 is communicated with the upper part of the pressure-stabilizing water tank 3, the lower valve of the liquid level gauge 4 is communicated with the lower part of the pressure-stabilizing water tank 3, the drain valve 5 and the pressure transmitter 6 are both communicated with the top of the pressure-stabilizing water tank 3, and the sewage discharge valve 12 is communicated with the lower part of the pressure-stabilizing water tank 3 to discharge cleaning sewage or excess tap water. In this embodiment, the lowest position of the water outlet pipe 7 is close to the bottom of the pressure-stabilizing water tank 3.

[0033] Specifically, one end of the air inlet valve 14 is communicated with the upper part of the pressure-stabilizing water tank 3, the other end of the air inlet valve 14 is communicated with the air pipe for conveying compressed air, and the air inlet valve 14 is interlocked with the pressure transmitter 6. Thus, the compressed air conveyed through the air pipe enables the water pressure in the pressure-stabilizing water tank 3 to reach the required range more quickly and stably. Among them, the compressed air can be nitrogen.

[0034] Refer to Figure 1It can be seen that the dashed line indicates an electrically controlled association relationship between two devices. Among them, the liquid level gauge 4 and the inlet regulating valve 2 are interlocked to regulate the liquid level of the constant pressure water tank 3. The pressure transmitter 6 is interlocked with the inlet regulating valve 2 to maintain the pressure of the constant pressure water tank 3, and the inlet air valve 14 is interlocked with the pressure transmitter 6 to enable the constant pressure water tank 3 to quickly and stably reach the required water pressure. The above interlocks are all realized through the control of the processor 13. However, it should be noted that this kind of interlock can be achieved based on the existing control logic. Therefore, the above control logic does not involve improvements in methods.

[0035] Among them, the English explanations involved are as follows: PI is a pressure remote transmitter, PG is a field pressure gauge, and the two together correspond to the pressure transmitter 6 in this embodiment; LG is a field liquid level gauge, and LISA is a liquid level switch alarm, and the two together correspond to the liquid level gauge 4 in this embodiment; HCV is a manual control valve. Figure 1 Among them, the English explanations involved are as follows: PI is a pressure remote transmitter, PG is a field pressure gauge, and the two together correspond to the pressure transmitter 6 in this embodiment; LG is a field liquid level gauge, and LISA is a liquid level switch alarm, and the two together correspond to the liquid level gauge 4 in this embodiment; HCV is a manual control valve.

[0036] Therefore, the operation process of this embodiment is described as follows:

[0037] (1) The main water supply pipe supplies tap water higher than 0.3 MPa to the constant pressure water tank 3 through the water inlet pipe 1. Through the interlock of the liquid level gauge 4 and the inlet regulating valve 2, the initial water inlet liquid level of the constant pressure water tank 3 is at 40% of the height of the constant pressure water tank 3.

[0038] Among them, the initial water inlet liquid level is at 30 - 70% of the height of the constant pressure water tank 3, and this embodiment preferably selects 40%.

[0039] (2) Close the vent valve 5. The pressure inside the constant pressure water tank 3 is normal pressure, that is, 0.1 MPa. At this time, the constant pressure water tank 3 is interlocked with the pressure transmitter 6 through the inlet air valve 14 to deliver compressed air to the constant pressure water tank 3, control the pressure inside the constant pressure water tank 3 to be 0.3 MPa, and then open the outlet ball valve 11 on the water outlet pipe 7 to supply water to the water softening equipment through the softened water pipeline.

[0040] Therefore, although the pressure can be directly increased by tap water, in the actual operation process, the set pressure is 0.3 MPa. At the beginning, the water inlet liquid level is 40% of the tank height. By directly increasing the pressure with tap water, the liquid level will be close to 90%, which is not conducive to the staff's observation. Moreover, due to the small amount of air, the system elasticity decreases. Therefore, adding compressed air to regulate the pressure at the initial stage can better play a buffering role and is convenient for the inspection personnel to observe.

[0041] It should be noted that using compressed air to regulate the pressure only needs to be enabled once when starting operation, and the original pressure of the tap water system is used to achieve the regulation during continuous operation.

[0042] (3) Since the inlet control valve 2 is interlocked with the pressure transmitter 6, when the pressure in the constant pressure water tank 3 drops, the opening degree of the inlet control valve 2 increases, and the system pressure rises; when the pressure in the constant pressure water tank 3 exceeds the pressure limit, the opening degree of the inlet control valve 2 decreases, and the system pressure drops, thereby ensuring the pressure stability of the constant pressure water tank 3.

[0043] At the same time, since there is about 60% air in the constant pressure water tank 3 and the compressibility ratio of water is much lower than that of gas, when the water supply of the tap water cannot keep up with the water supply of the water softening equipment, the volume of the water phase is converted into the volume of the gas phase, but the drop in the system pressure is very small, and the pressure in the constant pressure water tank 3 can still be maintained within the set range, and vice versa. In the actual application scenario, the water level in the constant pressure water tank 3 is about 60% of the height of the constant pressure water tank 3 at the beginning of the water supply of the water softening equipment. When the water level fluctuates up and down by 5-10%, the pressure in the constant pressure water tank 3 is still between 0.28-0.32 MPa. Therefore, there is no need to frequently adjust the inlet control valve 2, which can reduce the frequent conversion of the inlet control valve 2 and the influence of the change in the tap water pressure.

[0044] In summary, this embodiment utilizes the air pressure of the compressed air and the original pressure of the tap water system, without a constant pressure water pump, thus achieving the effect of accurate and stable constant pressure water supply with energy conservation and cost reduction.

[0045] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and defined, when a first feature is "on" or "under" a second feature, it may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or it merely means that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "below" and "beneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or it merely means that the horizontal height of the first feature is lower than that of the second feature.

[0048] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A pressure-stabilizing water supply device for a water softening device, characterized in that: It includes a water inlet pipe, a water inlet regulating valve, a pressure-stabilizing water tank, a liquid level gauge, a vent valve, a pressure transmitter and a water outlet pipe, wherein the water inlet pipe is connected to the upper part of the pressure-stabilizing water tank, the water inlet regulating valve is arranged on the water inlet pipe, the water outlet pipe is connected to the lower part of the pressure-stabilizing water tank, the upper valve of the liquid level gauge is connected to the upper part of the pressure-stabilizing water tank, the lower valve of the liquid level gauge is connected to the lower part of the pressure-stabilizing water tank, and the vent valve and the pressure transmitter are connected to the top of the pressure-stabilizing water tank; The liquid level meter is interlocked with the water inlet regulating valve, and the pressure transmitter is interlocked with the water inlet regulating valve.

2. The pressure-stabilizing water supply device for water softening equipment according to claim 1, characterized in that: It also includes an air intake valve, one end of which is connected to the upper side of the pressure-stabilizing water tank, and the other end of which is connected to an air pipe for conveying compressed air; The air inlet valve is interlocked with the pressure transmitter.

3. The pressure-stabilizing water supply device for water softening equipment according to claim 1, characterized in that: It also includes a water inlet pressure gauge, which is arranged on the water inlet pipe.

4. The pressure-stabilizing water supply device for a water softening device according to claim 1, characterized in that: It also includes a first water inlet stop valve and a second water inlet stop valve, wherein the first water inlet stop valve and the second water inlet stop valve are arranged on the water inlet pipe and are respectively located in front and rear positions of the water inlet regulating valve.

5. The pressure-stabilizing water supply device for water softening equipment according to claim 1, characterized in that: It also includes a water outlet ball valve, which is arranged on the water outlet pipe.

6. The pressure-stabilizing water supply device for water softening equipment according to claim 1, characterized in that: It also includes a drain valve, which is communicated with the lower part of the pressure-stabilizing water tank.

Images