CN205109407U - Forward filters negative pressure and causes ultrafiltration device - Google Patents

Abstract

The utility model provides an ultrafiltration device for positive filtration negative pressure, which comprises an ultrafiltration membrane assembly, a negative pressure box capable of forming a vacuum environment inside, and a water pump connected to the negative pressure box. The ultrafiltration membrane assembly includes a The water inlet end of the membrane part immersed in the raw water to be treated and the water outlet sealingly connected with the water inlet of the negative pressure box. The positive filtering negative pressure triggering ultrafiltration device has the advantages of scientific design, no energy consumption in the filtering process, simple structure and convenient cleaning.

Description

Positive Filtration Negative Pressure Initiated Ultrafiltration Unit

technical field

The utility model relates to a water purification device, in particular to an ultrafiltration device induced by negative pressure for forward filtration.

Background technique

With the shortage of water resources and the aggravation of water pollution, sewage reuse technology has the advantages of reducing water pollution and saving water, and has attracted more and more attention. Among them, ultrafiltration membrane technology is popular in the industry because of its high filtration precision, which can effectively filter out bacteria and impurities in water, and the filtered water quality is better. However, ultrafiltration membrane filtration needs to form a certain pressure difference on both sides of the filter membrane, and generally requires the use of motors to pressurize. The filtration process consumes a lot of electricity, which makes the cost of water treatment high and limits the popularization of recycled water utilization.

In order to solve the above existing problems, people have been seeking an ideal technical solution.

Contents of the invention

The purpose of the utility model is to aim at the deficiencies of the prior art, thereby providing a positive filter negative pressure trigger ultrafiltration device with scientific design, no energy consumption in the filter process, simple structure and convenient cleaning.

In order to achieve the above object, the technical solution adopted by the utility model is: a positive filtration negative pressure trigger ultrafiltration device, including an ultrafiltration membrane module, a negative pressure box capable of forming a vacuum environment inside, and a device connected to the negative pressure box A water pump, wherein the ultrafiltration membrane module includes a water inlet end of the membrane part capable of immersing in the raw water to be treated and a water outlet sealingly connected with the water inlet of the negative pressure box.

Based on the above, a one-way exhaust valve is installed on the top of the negative pressure box.

Based on the above, it also includes a raw water tank for containing the raw water to be treated, the raw water tank is open or the raw water tank is a box with a cover, and the cover is provided with air holes.

Basically, the negative pressure tank is set in the raw water tank or the negative pressure tank is set separately from the raw water tank.

Based on the above, the water pump is arranged in the negative pressure tank and the water outlet of the water pump is connected to the water outlet of the negative pressure tank.

Based on the above, the water pump inspection port is provided on the wall plate of the negative pressure box, and the water pump inspection port is provided with a sealing device.

Basically, the water inlet of the water pump communicates with the water outlet of the negative pressure tank.

Basically, the water outlet of the water pump is connected to the reclaimed water utilization equipment, and the water supply valve of the reclaimed water utilization equipment is set in association with the switch of the water pump.

Based on the above, it also includes an external water pipe with one end connected to the water outlet of the ultrafiltration membrane module, a one-way water inlet valve is arranged on the external water pipe, the other end of the external water pipe is connected to the water supply equipment, and the raw water tank Set the drain outlet at the bottom.

Based on the above, the reclaimed water utilization equipment includes a toilet water tank or a mop pool water supply faucet or a washing machine water supply faucet or a regenerated water storage tank.

Compared with the prior art, the utility model has substantive features and progress. Specifically, in the utility model, since the raw water to be treated is generally in the raw water pool or the raw water tank, and communicates with the outside, the water inlet end of the membrane part of the ultrafiltration membrane module Immersed in the raw water to be treated, resulting in high pressure on the outside of the ultrafiltration membrane, the water outlet of the ultrafiltration membrane module is connected to the water inlet of the negative pressure box, and the vacuum negative pressure environment in the negative pressure box causes the pressure on the inside of the ultrafiltration membrane of the ultrafiltration membrane module The pressure difference is formed on both sides of the ultrafiltration membrane, and then the sewage in the raw water tank enters the negative pressure box through the ultrafiltration membrane module, and the filtration process is completed. The water pump pumps out the water in the negative pressure box and restores it to the negative pressure box. In the state of vacuum and negative pressure, the sewage in the raw water tank continues to be filtered into the negative pressure tank, thereby continuously purifying the sewage. Since the filtration process does not require external pressure, energy consumption is reduced, making ultrafiltration membrane filtration easier to popularize.

At the same time, the structure of this kind of ultrafiltration membrane module is roughly that the membrane part enters the water, and the water outlet is uniformly discharged. Such structural stains will not enter the ultrafiltration membrane module, and the cleaning is easier.

In the initial state, the negative pressure box needs to be vacuumed to form a vacuum negative pressure environment.

Further, a one-way exhaust valve is set on the top of the negative pressure box to facilitate the formation of a negative pressure environment. During specific operations, the negative pressure box is filled with water, and the air is discharged through the one-way exhaust valve on the top, and then the water pump is used to Pump the water away to form a negative pressure and start working.

Further, the original water tank is set, and the original water tank can be set with an open mouth, or a cover can be added, and vent holes are set on the cover, the purpose of which is to keep the atmospheric pressure in the original water tank consistent with the outside world. In an environment that needs to save space, the negative pressure tank can be installed in the raw water tank, or the raw water tank and the negative pressure tank can be installed close together, or even set up as a structure with two chambers in one tank, and a through hole is set on the middle partition to communicate. Two rooms. Usually, pipelines are used to connect the raw water tank and the negative pressure tank.

Furthermore, the water pump is installed in the negative pressure box, and the structure integration is higher. The water outlet of the water pump is connected to the water outlet of the negative pressure box, and the structure is more compact. Normal maintenance also ensures the stability of the negative pressure in the negative pressure box. The water pump can also be arranged outside the negative pressure box, the water inlet of the water pump is connected with the water outlet of the negative pressure box, the structure is simpler, and the installation and maintenance are more convenient.

Further, the water outlet of the negative pressure tank is connected to the reclaimed water utilization equipment, and the water supply valve of the reclaimed water utilization equipment is linked with the switch of the water pump to ensure that the water pump stops when the water supply valve is closed to avoid pipe bursting.

Further, a sewage outlet is provided at the bottom of the raw water tank for cleaning the raw water tank. At the same time, an external water pipe is provided to communicate with the water outlet of the ultrafiltration membrane module. The components are backwashed, and the flushed sewage is discharged from the sewage outlet. The control valve installed on the external water pipe is a one-way water inlet valve, which can only enter water, so as to avoid interference with the pressure in the negative pressure box during the water filtration process and ensure the sealing of the negative pressure box.

It has the advantages of scientific design, no energy consumption in the filtering process, simple structure and convenient cleaning.

Description of drawings

Fig. 1 is the schematic structural view of the positive filter negative pressure triggering ultrafiltration device in embodiment 1 of the present utility model.

Fig. 2 is a structural schematic diagram of a negative pressure tank arranged in a raw water tank in other embodiments.

Fig. 3 is a structural schematic diagram of the integral arrangement of the negative pressure tank and the raw water tank in other embodiments.

Fig. 4 is a structural schematic diagram of the positive filter negative pressure triggering ultrafiltration device in Example 2 of the present invention.

Fig. 5 is a structural schematic diagram of the positive filter negative pressure triggering ultrafiltration device in Example 3 of the present invention.

In the figure: 1. Raw water tank; 2. Ultrafiltration membrane module; 3. Water inlet; 4. Water outlet of ultrafiltration membrane module; 5. Water inlet of negative pressure box; 6. Water outlet of negative pressure box; 7. Water pump; 8. One-way exhaust valve; 9. Negative pressure box; 10. Toilet water tank; 11. Floating ball; 12. External water pipe; 13. One-way water inlet valve; .Through holes.

detailed description

The technical solutions of the present invention will be further described in detail through specific implementation methods below.

Example 1

As shown in Fig. 1, a kind of positive filtration negative pressure causes ultrafiltration device, it comprises open raw water tank 1, the negative pressure box 9 that can form vacuum environment inside, ultrafiltration membrane module 2 and be located at described negative pressure The water pump 7 in the box 9, the water inlet end of the membrane part of the ultrafiltration membrane module is arranged in the raw water tank, immersed in the raw water to be treated, the water inlet 6 of the negative pressure box is communicated with the water outlet 4 of the ultrafiltration membrane module , The water outlet of the water pump 7 is in communication with the water outlet 6 of the negative pressure box, and the top of the negative pressure box 9 is provided with a one-way exhaust valve 8 . A water pump inspection port is arranged on the wall plate of the negative pressure box 9, and a sealing device is arranged on the water pump inspection port. The one-way exhaust valve 8 is an automatic control valve.

Working process: When using for the first time, actively pour water into the negative pressure box 9, and the air in the negative pressure box 9 is discharged from the one-way exhaust valve 8 on the top. After filling the water, turn on the water pump 7 to empty the water, and the negative pressure box 9 Vacuum negative pressure is formed in 9, and normal work starts; if the one-way exhaust valve 8 is not provided, the negative pressure box needs to be vacuumized.

Sewage enters the raw water tank 1 from the water inlet 3. Since the raw water tank 1 is open, the internal atmospheric pressure is consistent with the outside world, and the negative pressure box 9 communicates with the water inlet 5 of the negative pressure box through the water outlet 4 of the ultrafiltration membrane module. The pressure on both sides of the ultrafiltration membrane in the ultrafiltration membrane module 2 is not equal, and a pressure difference occurs, so that the sewage can pass through the ultrafiltration membrane module 2 to complete the filtration process, and the filtered clean water is discharged into the negative pressure box 9 until The negative pressure box 9 is fully loaded, and the clean water in the negative pressure box 9 is pumped out by the water pump 7 for reuse. After the water pump 7 pumps out the water, a negative pressure environment is formed in the negative pressure box 9, and the sewage filtration process starts again, and the cycle is like this. It realizes no energy consumption in the sewage filtration process and saves costs.

As shown in Fig. 2, in other embodiments, the negative pressure tank is arranged in the raw water tank, which has a high degree of integration and a smaller volume.

As shown in Figure 3, in other embodiments, the water outlet of the raw water tank 1 and the water inlet of the negative pressure tank 9 can be closely connected, and even the raw water tank and the negative pressure tank are arranged in a way that a partition is arranged in a whole box body, The water outlet of the ultrafiltration membrane module is connected to the two chambers through the through hole 16 on the partition, and the through hole is sealed with the outer ring of the water outlet of the ultrafiltration membrane module. The structure is simpler, the maintenance is more convenient, and it takes into account the occupation space requirements.

In other embodiments, the water pump can be arranged outside the negative pressure box, and the water inlet of the water pump is connected with the water outlet of the negative pressure box. The process requirements are reduced and the cost is lower.

As shown in Figure 4, in other embodiments, the raw water tank 1 is a box body with a cover, and vent holes 14 are arranged on the cover, so that the sewage is not exposed, does not affect the appearance or smell, and the specific environment can be handled as appropriate. But its root is to ensure that the original water tank 1 is communicated with the outside, ensuring that its air pressure is consistent with the air pressure of the external environment.

Example 2

As shown in Figure 4, different from the above embodiments, the negative pressure tank outlet 6 is connected to the reclaimed water utilization equipment: the toilet water tank 10, and the floating ball 11 of the toilet water tank 10 rises to the preset liquid level as the liquid level rises. , the floating ball 11 closes the water supply valve, the water supply valve is set in association with the switch of the water pump 7, the valve is closed, the switch of the water pump 7 is also closed, the water pump 7 stops working, and the negative pressure tank 9 stores water under the effect of the pressure difference until it is full , so back and forth.

In other embodiments, the reclaimed water utilization equipment may be a water supply faucet for a mop pool, a water supply faucet for a washing machine, or a regenerated water storage tank.

Example 3

As shown in Figure 5, different from the above embodiment, it also includes an external water pipe 12 with one end communicating with the water outlet 4 of the ultrafiltration membrane assembly, and a one-way water inlet valve 13 is set on the external water pipe 12, the described The other end of the external water pipe 12 is connected to water supply equipment. A sewage outlet 15 is arranged at the bottom of the raw water tank 1 . The one-way water inlet valve 13 is an automatic control valve.

This set of equipment is mainly used to clean the ultrafiltration membrane module 2. The external water pipe 12 is connected to the water outlet of the ultrafiltration membrane module for reverse flushing. The flushed sewage is discharged from the sewage outlet 15. The function of the one-way water inlet valve 13 is, Only the external water is allowed to enter, and the internal water is not allowed to be discharged. In the normal filtration process, the negative pressure box 9 is guaranteed to be sealed, and the clean water will not flow out from the external water pipe 12, and the air will not enter the negative pressure from the external water pipe 12. Case 9 is similar in principle to the one-way exhaust valve 8 on the top of negative pressure case 9.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand that: still The specific implementation of the utility model can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solution of the utility model, all of them should be included in the scope of the technical solution claimed by the utility model.

Claims (10)

1. a kind of forward filtration negative pressure causes ultrafiltration device, it is characterized in that: it comprises ultrafiltration membrane assembly, the negative pressure box that the inside can form vacuum environment and the water pump that communicates with described negative pressure box, described ultrafiltration membrane assembly It includes a water inlet end of the membrane part capable of immersing in raw water to be treated and a water outlet sealingly connected with the water inlet of the negative pressure box. 2. The positive filter negative pressure induced ultrafiltration device according to claim 1, characterized in that: a one-way exhaust valve is installed on the top of the negative pressure box. 3. The positive filter negative pressure triggering ultrafiltration device according to claim 1 or 2, characterized in that: it also includes a raw water tank for containing the raw water to be treated, the raw water tank is open or the raw water tank It is a box body with a box cover, and the box cover is provided with ventilation holes. 4 . The positive filter negative pressure induced ultrafiltration device according to claim 3 , wherein the negative pressure tank is set in the raw water tank or the negative pressure tank is set separately from the raw water tank. 5 . 5. The forward filter negative pressure triggering ultrafiltration device according to claim 4, characterized in that: the water pump is arranged in the negative pressure tank and the water outlet of the water pump is connected to the water outlet of the negative pressure tank . 6 . The positive filter negative pressure induced ultrafiltration device according to claim 5 , characterized in that: a water pump inspection port is provided on the wall of the negative pressure box, and a sealing device is provided at the water pump inspection port. 7 . 7 . The positive filter negative pressure induced ultrafiltration device according to claim 4 , wherein the water inlet of the water pump is connected to the water outlet of the negative pressure tank. 7 . 8. The positive filter negative pressure triggering ultrafiltration device according to any one of claims 5-7, characterized in that: the water outlet of the water pump is connected to reclaimed water utilization equipment, and the water supply valve of the regenerated water utilization equipment is connected to the The switch linkage setting of the water pump. 9. positive filter negative pressure according to claim 8 causes ultrafiltration device, it is characterized in that: it also comprises the external water pipe that one end communicates with the water outlet of described ultrafiltration membrane module, and described external water pipe is provided with unidirectional inlet A water valve, the other end of the external water pipe is connected to the water supply equipment, and the bottom of the raw water tank is provided with a sewage outlet. 10 . The positive filter negative pressure trigger ultrafiltration device according to claim 8 , characterized in that: the regenerated water utilization equipment includes a toilet water tank or a mop pool water supply faucet or a washing machine water supply faucet or a regenerated water storage tank. 11 .