Device for preventing back pressure of produced water of reverse osmosis membrane

Abstract

The utility model relates to the technical field of reverse osmosis membrane water purification, and discloses a device for preventing reverse osmosis membrane produced water backpressure, which comprises a pressure relief component and a filter component which are arranged on a pure water pipe of a reverse osmosis membrane water purifier, the pressure relief component comprises a pressure relief pipe and a pressure relief seat arranged on the pressure relief pipe, and a replaceable rupture disk is arranged in the pressure relief seat; the filter assembly comprises a filter cartridge with an opening in the lower end, a blanking cap is arranged at the opening of the filter cartridge, the pressure relief pipe is used for being communicated with the upper end of the filter cartridge, a liquid drainage pipe is arranged on the outer side wall of the filter cartridge and located at the blanking cap, a liftable filter plate is arranged in the filter cartridge, and a shaking piece for driving the filter plate to shake is arranged on the blanking cap. Through the arrangement of the pressure relief pipe, the pressure relief seat and the blasting membrane, the pressure on the side of the pure water pipe is increased, the pressure difference on the two sides of the blasting membrane is increased, and when the bearing limit of the blasting membrane is reached, the blasting membrane is blasted, so that pure water in the pure water pipe is discharged through the pressure relief pipe, the reverse osmosis membrane water purifier is subjected to pressure relief, and the damage of the reverse osmosis membrane caused by back pressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis membrane water purification technology, specifically, to a device for preventing back pressure in reverse osmosis membrane permeate. Background Technology

[0002] Reverse osmosis membrane water purifiers are widely used in the water treatment industry to remove most of the saline substances in water treatment.

[0003] During the water treatment process, when a reverse osmosis (RO) water purifier shuts down normally or malfunctions, the pressure on the pure water side of the RO membrane often exceeds the pressure on the feed water side, creating back pressure. This back pressure can cause irreversible physical damage to the RO membrane. Although a check valve can be installed at the pure water outlet of the RO water purifier, its function is to block the pure water flow and prevent the pressure of the pure water flow from impacting the pure water side of the RO membrane. However, in actual use, if the check valve is damaged, it will eventually damage the RO membrane. Therefore, it is necessary to develop a device to prevent back pressure in the RO membrane product water, which can depressurize the RO water purifier and prevent back pressure from damaging the RO membrane. Utility Model Content

[0004] The purpose of this invention is to provide a device for preventing back pressure in reverse osmosis membrane permeate, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for preventing back pressure in reverse osmosis membrane permeate includes a pressure relief assembly and a filter assembly installed on the pure water pipe of a reverse osmosis water purifier. The pressure relief assembly includes a pressure relief pipe and a pressure relief seat installed on the pressure relief pipe. A replaceable rupture membrane is installed inside the pressure relief seat. The filter assembly includes a filter cylinder with an opening at the lower end. A plug is installed at the opening of the filter cylinder. The pressure relief pipe is used to connect to the upper end of the filter cylinder. A drain pipe is installed on the outer wall of the filter cylinder and located at the plug. A liftable filter plate is installed inside the filter cylinder. A vibrating element is installed on the plug for driving the filter plate to vibrate.

[0007] Furthermore, the pressure relief seat includes a left flange and a right flange, which are connected by bolts. The sidewalls of the left and right flanges that are far apart from each other protrude outward to form a connecting pipe that is connected to the pressure relief pipe.

[0008] The left and right flanges have insertion slots on their opposite sidewalls. The insertion slots correspond to the connecting pipes and their openings face outwards from the pressure relief seat. A plug seat can be pulled out of the insertion slot. The burst membrane is installed in the plug seat to correspond to the connecting pipe.

[0009] Furthermore, the left and right flanges have first arc-shaped grooves on opposite sides of the insertion groove at their respective sidewall edges, and second arc-shaped grooves on both sides of the insertion seat corresponding to the first arc-shaped grooves. Bolts are installed in the first arc-shaped grooves and slide into the second arc-shaped grooves to fix the insertion seat in the insertion groove.

[0010] Furthermore, the connector has a through hole in the corresponding connecting pipe, and a groove is provided on one side wall of the connector. The rupture membrane is installed in the groove, and an installation slot is provided at the opening of the groove. A pressure ring is installed in the installation slot by screws. The pressure ring is used to press the rupture membrane into the groove.

[0011] Furthermore, a top post is provided at the center of the plug along the axial direction of the filter cylinder, which is used to limit the downward position of the filter plate.

[0012] Furthermore, the top column is provided with a through hole that penetrates the plug, the filter plate is provided with a pull rod that extends through the through hole, the extended end of the pull rod is provided with a lifting column, and the top column is fitted with a spring that pushes the filter plate up so that the lifting column abuts against the plug.

[0013] Furthermore, the plug-in socket has a pull groove on the side wall outside the pressure relief seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of pressure relief pipe, pressure relief seat and rupture membrane, increases the pressure on the pure water pipe side, which increases the pressure difference on both sides of the rupture membrane. When the rupture membrane reaches its bearing limit, the rupture membrane bursts, allowing the pure water in the pure water pipe to be discharged through the pressure relief pipe, thereby relieving pressure on the reverse osmosis water purifier and avoiding damage to the reverse osmosis membrane caused by back pressure.

[0016] 2. This utility model, through the arrangement of the filter cylinder and the filter plate, enables the filter plate to filter the pure water flowing through the filter cylinder, so that the debris after the bursting membrane is placed on the filter plate, preventing the debris after the bursting membrane is discharged with the pure water through the drain pipe and affecting the use of that part of the pure water. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a device for preventing back pressure in reverse osmosis membrane permeate according to the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram of a device for preventing back pressure in reverse osmosis membrane permeate according to the present invention.

[0019] Figure 3 This is a schematic diagram of the pressure relief component in this utility model.

[0020] Figure 4 This is a half-section explosion diagram of the pressure relief component in this utility model.

[0021] Figure 5 This is a schematic diagram of the connector structure in this utility model.

[0022] Figure 6 This is a schematic diagram of the filter plate and shaking component on the plug in this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 100. Reverse osmosis membrane water purifier; 101. Concentrate pipe; 102. Pure water pipe; 110. Pressure relief assembly; 111. Pressure relief pipe; 111a. First pipe; 111b. Second pipe; 112. Pressure relief seat; 120. Filter assembly; 121. Filter cartridge; 122. Drain pipe; 123. Plug;

[0025] 200. Filter plate; 201. Pull rod; 202. Lifting column; 210. Left flange; 211. Connecting pipe; 220. Right flange; 230. Insertion socket; 240. Top column; 250. Spring;

[0026] 301. First arc-shaped groove;

[0027] 401. Insertion groove; 402. Second arc-shaped groove; 410. Bursting membrane; 420. Pressure ring;

[0028] 501. Through hole; 502. Groove; 503. Mounting groove; 504. Lifting groove. Detailed Implementation

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0030] The following is in conjunction with the appendix Figures 1-6 This embodiment will be described in further detail.

[0031] like Figure 1 As shown in Figure 2, a device for preventing back pressure in reverse osmosis membrane permeate in this embodiment includes a pressure relief component 110 and a filter component 120 disposed on the pure water pipe 102 of the reverse osmosis membrane water purifier 100. The reverse osmosis membrane water purifier 100 has an existing structure, which has a water supply pipe (not shown in the figure), a concentrate pipe 101 and a pure water pipe 102. The water to be treated enters the reverse osmosis membrane water purifier 100 through the water supply pipe. After being treated by the reverse osmosis membrane inside, the pure water is discharged through the pure water pipe 102 and the concentrate is discharged through the concentrate pipe 101.

[0032] Among them, the pressure relief component 110 is installed on the pure water pipe 102, which can relieve the pressure on the reverse osmosis membrane water purifier 100 when there is back pressure, so as to prevent the back pressure from damaging the reverse osmosis membrane of the reverse osmosis membrane water purifier 100.

[0033] The filter assembly 120 is used to filter the water discharged after being depressurized by the pressure relief assembly 110, so as to prevent impurities in the pressure relief assembly 110 from entering the subsequent pure water.

[0034] Combination Figure 3 and Figure 4 As shown, in this embodiment, the pressure relief assembly 110 includes a pressure relief pipe 111 and a pressure relief seat 112 disposed on the pressure relief pipe 111. Specifically, the pressure relief pipe 111 includes a first pipe 111a and a second pipe 111b. One end of the first pipe 111a is connected to the pure water pipe 102, and the other end is connected to the pressure relief seat 112. One end of the second pipe 111b is connected to the pressure relief seat 112. A replaceable rupture membrane 410 is provided inside the pressure relief seat 112. The rupture membrane 410 is made of plexiglass. Therefore, when the pressure on the pure water pipe 102 side increases during actual use, the pressure difference on both sides of the rupture membrane 410 will increase. When the rupture membrane 410 reaches its bearing limit, the rupture membrane 410 will burst, allowing the pure water in the pure water pipe 102 to be discharged through the pressure relief pipe 111, so that the reverse osmosis membrane water purifier 100 is depressurized, thereby avoiding back pressure damage to the reverse osmosis membrane.

[0035] In this embodiment, the filter assembly 120 includes a filter cylinder 121 with an opening at the lower end. A plug 123 is provided at the opening of the filter cylinder 121. The plug 123 is threadedly installed at the lower opening of the filter cylinder 121 to seal the filter cylinder 121. The pressure relief pipe 111 is used to connect to the upper end of the filter cylinder 121, that is, the other end of the second pipe 111b is connected to the upper end of the filter cylinder 121. At the same time, a drain pipe 122 is provided on the outer wall of the filter cylinder 121 and located at the plug 123. Thus, in actual use, after the burst membrane 410 bursts, the pure water in the pure water pipe 102 flows into the filter cylinder 121 through the second pipe 111b and is discharged through the drain pipe 122.

[0036] In order to prevent the debris from the burst membrane 410 from being discharged with the pure water through the drain pipe 122 and affecting the use of that pure water, in this embodiment, the filter cylinder 121 is provided with a liftable filter plate 200. The filter plate 200 is provided with filter holes for filtering pure water so that the debris from the burst membrane 410 is left on the filter plate 200. The plug 123 is provided with a shaking element for driving the filter plate 200 to shake. The shaking element drives the filter plate 200 to shake to prevent the debris from the burst membrane 410 from clogging the filter holes, thereby ensuring the filtration effect of the filter plate 200.

[0037] Specifically, in order to ensure the filtration effect of the filter plate 200, in this embodiment, the side wall of the filter plate 200 is slidably attached to the inner wall of the filter cylinder 121.

[0038] Specifically, in order to remove the debris from the filter plate 200, in this embodiment, the plug 123 is unscrewed to remove it from the lower end of the filter cylinder 121, so that the filter plate 200 inside the filter cylinder 121 can be taken out and the debris on it can be cleaned.

[0039] In actual use, in order to improve the sealing performance of the plug 123, a sealing ring is fitted on the plug 123 to press against the lower end of the filter cylinder 121.

[0040] In this embodiment, the pressure relief seat 112 includes a left flange 210 and a right flange 220, which are connected by bolts. The sidewalls of the left flange 210 and the right flange 220 protrude outward to form a connecting pipe 211 that is connected to the pressure relief pipe 111. The connecting pipe 211 is fixedly connected to the corresponding first pipe 111a and second pipe 111b, so that when the left flange 210 and the right flange 220 are connected by bolts, the pressure relief seat 112 is preferably installed on the pressure relief pipe 111.

[0041] The left flange 210 and the right flange 220 have interlocking grooves 401 on their opposite sidewalls. The interlocking grooves 401 correspond to the connecting pipe 211 and their openings face the outside of the pressure relief seat 112. An interlocking seat 230 is removable inside the interlocking groove 401. The rupture membrane 410 is installed inside the interlocking seat 230 to correspond to the connecting pipe 211. By using the interlocking seat 230 to be installed in the interlocking groove 401, the rupture membrane 410 can be detachably installed in the pressure relief seat 112. At the same time, by using the interlocking seat 230 to be installed in the interlocking groove 401, the replacement of the rupture membrane 410 in the pressure relief seat 112 is more convenient.

[0042] Specifically, in order to facilitate the pulling of the plug-in seat 230 in the plug-in groove 401, in this embodiment, the plug-in seat 230 is provided with a lifting groove 504 on the side wall outside the pressure relief seat 112.

[0043] In this embodiment, the left flange 210 and the right flange 220 are provided with first arc-shaped grooves 301 on both sides of the insertion groove 401 at opposite sidewall edges. The two sides of the insertion seat 230 are provided with second arc-shaped grooves 402 corresponding to the first arc-shaped grooves 301. Bolts are provided in the first arc-shaped grooves 301 and the bolts slide into the second arc-shaped grooves 402 to fix the insertion seat 230 in the insertion grooves 401.

[0044] In actual use, when it is necessary to remove the connector 230, first loosen the corresponding bolt and slide the bolt along the first arc groove 301 to disengage it from the second arc groove 402. At this time, by removing the connector 230, the internal rupture membrane 410 can be replaced. After the replacement is completed, insert the connector 230 back into the connector groove 401 and slide the corresponding bolt along the first arc groove 301 to slide it into the second arc groove 402. At this time, tighten the bolt to fix it, thereby fixing the connector 230 in the connector groove 401 to complete the replacement of the rupture membrane 410.

[0045] Combination Figure 5 As shown, in this embodiment, a through hole 501 is provided in the plug-in 230 corresponding to the connecting pipe 211. When the plug-in 230 is inserted into the plug groove 401, the through hole 501 is opposite to the connecting pipe 211. A groove 502 is provided on one side wall of the plug-in 230. The groove 502 is coaxial with the through hole 501, and its diameter is larger than the diameter of the through hole 501. The rupture membrane 410 is installed in the groove 502. An installation groove 503 is provided at the opening of the groove 502. A pressure ring 420 is installed in the installation groove 503 by screws. The pressure ring 420 is used to press the rupture membrane 410 into the groove 502. Thus, when the rupture membrane 410 bursts, pure water can flow in the pressure relief pipe 111 through the through hole 501.

[0046] It should be noted that when the pressure ring 420 is installed in the mounting groove 503, its outer side wall does not protrude out of the mounting groove 503. This allows the plug-in seat 230 to be pulled out and installed in the plug-in groove 401. The plug-in seat 230 and the plug-in groove 401 are compatible. Specifically, in order to improve the stability of the installation between the two and to prevent water leakage at the connection, a first sealing gasket is fixedly provided on the side wall of the plug-in seat 230 along the circumference of the through hole 501 and a second sealing gasket is provided along the circumference of the mounting groove 503. When the plug-in seat 230 is inserted into the plug-in groove 401, the first sealing gasket and the second sealing gasket abut against the corresponding side wall of the plug-in groove 401, so that the installation of the plug-in seat 230 in the plug-in groove 401 is sealed.

[0047] Combination Figure 6 As shown in this embodiment, a top post 240 is provided at the center of the plug 123 along the axial direction of the filter cylinder 121. The top post 240 is used to limit the descent position of the filter plate 200 to prevent the filter plate 200 from falling to the drain pipe 122, causing pure water to be discharged through the drain pipe 122 without filtration, thus affecting the filtration effect of the filter plate 200.

[0048] In this embodiment, the top column 240 is provided with a through hole that penetrates the plug 123. A pull rod 201 extending through the through hole is fixed on the filter plate 200. A lifting column 202 is provided at the extended end of the pull rod 201. A spring 250 is provided on the top column 240 to push the filter plate 200 upward so that the lifting column 202 abuts against the plug 123.

[0049] With the above structure, in actual use, pulling the lifting column 202 causes the pull rod 201 to move the filter plate 200 downward, so that it abuts against the top column 240. During this process, the spring 250 is compressed. At this time, releasing the lifting column 202 allows the spring 250 to return to its original position, thereby moving the filter plate 200 upward. At the same time, under the elastic force of the spring 250, the filter plate 200 can be shaken, which can prevent the debris after the burst membrane 410 bursts from clogging the filter pores, thus ensuring the filtration effect of the filter plate 200. At the same time, the shaking of the filter plate 200 can be achieved by pulling the lifting column 202, which is simple and convenient to operate and beneficial to practical use.

[0050] It should be noted that, in order to ensure the sealing between the through hole and the pull rod 201, a rubber ring is fixedly installed inside the through hole. The rubber ring compresses the pull rod 201 to seal the through hole and the pull rod 201.

[0051] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A device for preventing back pressure of water production of a reverse osmosis membrane, comprising a pressure relief assembly (110) and a filter assembly (120) arranged on a pure water pipe (102) of a reverse osmosis membrane water purifier (100), characterized in that: The pressure relief assembly (110) includes a pressure relief pipe (111) and a pressure relief seat (112) provided on the pressure relief pipe (111). The pressure relief seat (112) is provided with a replaceable rupture membrane (410). The filter assembly (120) includes a filter cylinder (121) with an opening at the lower end. A plug (123) is provided at the opening of the filter cylinder (121). The pressure relief pipe (111) is used to connect to the upper end of the filter cylinder (121). A drain pipe (122) is provided on the outer wall of the filter cylinder (121) and at the plug (123). A liftable filter plate (200) is provided inside the filter cylinder (121). A shaking element is provided on the plug (123) for driving the filter plate (200) to shake.

2. The device for preventing back pressure of reverse osmosis membrane water production according to claim 1, characterized in that: The pressure relief seat (112) includes a left flange (210) and a right flange (220), which are connected by bolts. The sidewalls of the left flange (210) and the right flange (220) protrude outward to form a connecting pipe (211) that is connected to the pressure relief pipe (111). The left flange (210) and the right flange (220) have interlocking grooves (401) on their opposite sidewalls. The interlocking grooves (401) correspond to the connecting pipe (211) and their openings face the outside of the pressure relief seat (112). An interlocking seat (230) can be pulled out inside the interlocking grooves (401). A bursting membrane (410) is installed inside the interlocking seat (230) to correspond to the connecting pipe (211).

3. The device for preventing back pressure of reverse osmosis membrane water production according to claim 2, characterized in that: The left flange (210) and the right flange (220) have opposite sides of the edge of the sidewalls with first arc grooves (301) located on both sides of the plug groove (401). The plug seat (230) has second arc grooves (402) on both sides corresponding to the first arc grooves (301). Bolts are provided in the first arc grooves (301) and the bolts slide into the second arc grooves (402) to fix the plug seat (230) in the plug grooves (401).

4. The device for preventing back pressure of reverse osmosis membrane water production according to claim 2, characterized in that: A through hole (501) is provided in the plug-in socket (230) corresponding to the connecting pipe (211). A groove (502) is provided on one side wall of the plug-in socket (230). The rupture membrane (410) is installed in the groove (502). An installation groove (503) is provided at the opening of the groove (502). A pressure ring (420) is installed in the installation groove (503) by screws. The pressure ring (420) is used to press the rupture membrane (410) into the groove (502).

5. The device for preventing back pressure of reverse osmosis membrane water production according to claim 1, characterized in that: A top post (240) is provided at the center of the plug (123) along the axial direction of the filter cylinder (121), and the top post (240) is used to limit the downward position of the filter plate (200).

6. The device for preventing back pressure of reverse osmosis membrane water production according to claim 5, characterized in that: The top column (240) has a through hole that passes through the plug (123). The filter plate (200) has a pull rod (201) that extends through the through hole. The extended end of the pull rod (201) has a lifting column (202). The top column (240) is fitted with a spring (250) that pushes the filter plate (200) upward so that the lifting column (202) abuts against the plug (123).

7. The device for preventing back pressure of reverse osmosis membrane water production according to claim 2, characterized in that: The plug-in socket (230) has a pull groove (504) on the side wall outside the pressure relief seat (112).

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