Device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method

Abstract

The utility model relates to the technical field of water purification equipment, and discloses a device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method, which comprises a filter bin, a sealing cover is arranged on the outer wall of the filter bin, a fixing plate is fixedly assembled on the outer wall of the filter bin, a limiting rod is fixedly assembled on the outer wall of the sealing cover, and a water outlet is formed in the outer wall of the limiting rod. A supporting plate is fixedly assembled on the outer wall of the fixing plate. According to the device for preparing the water for injection through the reverse osmosis ultrafiltration combined membrane method, the sealing cover is arranged on the outer wall of the filtering bin, the limiting rod is arranged on the outer wall of the sealing cover, the pull rod is inserted into an inner cavity of the limiting rod to fix the sealing cover, and during fixing, due to the fact that the outer wall of the pull rod is in an oblique notch shape, the sealing cover is fixed; by arranging the limiting rod, the limiting rod can be pushed to the side close to the filtering bin very smoothly, so that the sealing cover can be mounted more conveniently during mounting, and the sealing performance of normal use of equipment can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method. Background Art

[0002] Among the various qualities of water used in the pharmaceutical industry, water for injection has always been the most important pharmaceutical water, and its quality requirements are higher. At present, my country's pharmaceutical companies generally use distillation and reverse osmosis membrane methods to prepare water for injection. Among them, the reverse osmosis membrane method is used to prepare water for injection. The operation process is simple, the efficiency of removing salt and heat sources is high, and it is relatively economical.

[0003] When using traditional combined membrane water preparation equipment, the filter membrane is often installed in a closed container. Water is supplied to the inner cavity of the container so that water passes through the outer wall of the filter membrane. However, in order to maintain good airtightness, traditional equipment requires disassembly of the container when the filter membrane needs to be replaced, which is very troublesome and inconvenient to replace the filter membrane in the inner cavity of the container. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model provides a device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method, which has the advantages of easy use and good filtering effect, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical scheme: a device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method, comprising a filter bin, an outer wall of the filter bin is provided with a closing cover, an outer wall of the filter bin is fixedly equipped with a fixing plate, an outer wall of the closing cover is fixedly equipped with a limiting rod, an outer wall of the fixing plate is fixedly equipped with a supporting plate, a fixing cylinder is fixedly equipped with a pulling rod in an inner cavity of the fixing cylinder, a driving spring is movably connected to an outer wall of the pulling rod, a limiting ring is fixedly equipped with an outer wall of the pulling rod, a sewage pipe is fixedly equipped with an outer wall of the filter bin, a detection tube is provided with an inner cavity of the detection tube, a rotating shaft is rotatably connected therein, a driving plate is fixedly equipped on an outer wall of the rotating shaft, a mounting plate is fixedly equipped on an outer wall of the detection tube, a pressure switch is installed on an outer wall of the mounting plate, an audible and visual alarm is fixedly equipped on the top of the detection tube, and a filter membrane is fixedly equipped with an inner cavity of the filter bin.

[0006] As a preferred technical solution of the utility model: the two ends of the driving spring are in contact with the inner wall of the fixing cylinder and the outer wall of the limiting ring respectively, and the outer wall diameter of the limiting ring matches the inner wall diameter of the fixing cylinder.

[0007] As a preferred technical solution of the utility model: a limiting hole is provided on the top of the limiting rod, and the inner wall diameter of the limiting hole matches the outer wall diameter of the pull rod, and the outer wall of one end of the pull rod close to the limiting rod is in an oblique cut shape.

[0008] As a preferred technical solution of the utility model: the number of the limiting rods is four, and the four limiting rods are respectively and equidistantly installed on the outer wall of the closing cover.

[0009] As a preferred technical solution of the utility model: a control panel and a frequency monitor are installed on the top of the detection tube, and the control panel and the frequency monitor are electrically connected to the pressure switch and the sound and light alarm respectively.

[0010] As a preferred technical solution of the utility model: a trigger rod is fixedly mounted on the outer wall of the rotating shaft, and the outer wall of the trigger rod is in contact with the outer wall of the pressure switch.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The device for preparing water for injection by the reverse osmosis ultrafiltration combined membrane method has a closing cover arranged on the outer wall of the filter bin and a limiting rod arranged on the outer wall of the closing cover, and the closing cover is fixed by inserting a pull rod into the inner cavity of the limiting rod. When fixing, since the outer wall of the pull rod is in an oblique cut shape, it is very smooth to push the limiting rod toward the side close to the filter bin, so that the closing cover can be installed more conveniently during installation and the sealing performance for normal use of the equipment can be met.

[0013] 2. The device for preparing water for injection by the reverse osmosis ultrafiltration combined membrane method has a detection tube arranged on the outer wall of the filter bin and a rotating shaft arranged in the inner cavity of the detection tube. Under the impact of normal water flow rate, the driving shaft can have a normal rotation speed, so that the number of times the pressure switch is triggered within a fixed time is also the same. Once the filter membrane is clogged, the water flow rate in the inner cavity of the detection tube will decrease, and the rotation speed of the driving shaft will decrease. At this time, it can be discovered in time under the action of the frequency monitor, and the sound and light alarm will be started under the action of the control panel to remind the user to replace the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the filter bin of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the closure cover of the utility model;

[0017] Figure 4This is a schematic diagram of the cross-sectional structure of the detection tube of the utility model;

[0018] Figure 5 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. Filter chamber; 2. Closing cover; 3. Fixed plate; 4. Limit rod; 5. Support plate; 6. Fixed cylinder; 7. Pull rod; 8. Drive spring; 9. Limit ring; 10. Drain pipe; 11. Detection tube; 12. Rotating shaft; 13. Drive plate; 14. Mounting plate; 15. Pressure switch; 16. Sound and light alarm; 17. Filter membrane. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 A device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method comprises a filter chamber 1, a closing cover 2 is installed on the outer wall of the filter chamber 1, a fixing plate 3 is fixedly installed on the outer wall of the filter chamber 1, a limiting rod 4 is fixedly installed on the outer wall of the closing cover 2, a supporting plate 5 is fixedly installed on the outer wall of the fixing plate 3, a fixing cylinder 6 is fixedly installed on the top of the supporting plate 5, a pull rod 7 is movably sleeved on the inner cavity of the fixing cylinder 6, a driving spring 8 is movably sleeved on the outer wall of the pull rod 7, a limiting ring 9 is fixedly installed on the outer wall of the pull rod 7, a sewage pipe 10 is fixedly installed on the outer wall of the filter chamber 1, a detection tube 11 is installed on the outer wall of the filter chamber 1, a rotating shaft 12 is rotatably connected in the inner cavity of the detection tube 11, a driving plate 13 is fixedly installed on the outer wall of the rotating shaft 12, a mounting plate 14 is fixedly installed on the outer wall of the detection tube 11, a pressure switch 15 is installed on the outer wall of the mounting plate 14, an audible and visual alarm 16 is fixedly installed on the top of the detection tube 11, and a filter membrane 17 is fixedly installed on the inner cavity of the filter chamber 1.

[0022] By installing a fixing plate 3 on the outer wall of the filter bin 1 and a supporting plate 5 on the outer wall of the fixing plate 3, the limiting rod 4 can be fixed under the action of the supporting plate 5, the fixing tube 6 and the pulling rod 7, thereby fixing the closing cover 2 under the action of the limiting rod 4, so that the closing cover 2 is more closely connected to the filter bin 1.

[0023] In a preferred embodiment, two ends of the driving spring 8 are in contact with the inner wall of the fixing tube 6 and the outer wall of the limiting ring 9 respectively, and the outer wall diameter of the limiting ring 9 matches the inner wall diameter of the fixing tube 6 .

[0024] By setting the fixing cylinder 6 and the pull rod 7 on the top of the support plate 5, the pull rod 7 will be pushed downward under the action of the driving spring 8, so that the outer wall of the pull rod 7 enters the inner cavity of the limiting rod 4, thereby realizing the fixation of the limiting rod 4. At this time, the closing cover 2 and the filter bin 1 can be fixed under the action of the limiting rod 4.

[0025] In a preferred embodiment: a limiting hole is provided at the top of the limiting rod 4 , and the inner wall diameter of the limiting hole matches the outer wall diameter of the pull rod 7 , and the outer wall of one end of the pull rod 7 close to the limiting rod 4 is in an oblique cut shape.

[0026] By means of the limiting hole arranged on the top of the limiting rod 4, when the pull rod 7 enters into the inner cavity of the limiting rod 4 under the action of the driving spring 8, the closing cover 2 can be fixed under the action of the pull rod 7, and when fixing the closing cover 2, it is only necessary to push the closing cover 2. Since the outer wall of the pull rod 7 is in an oblique cut shape, the pull rod 7 can be smoothly entered into the inner cavity of the limiting rod 4 under the action of the limiting rod 4. However, when the limiting rod 4 is pulled outward, due to the oblique cut shape at the bottom of the pull rod 7, the closing cover 2 cannot be smoothly pulled out.

[0027] In a preferred embodiment, there are four limiting rods 4 , and the four limiting rods 4 are respectively installed on the outer wall of the closing cover 2 at equal distances.

[0028] By installing multiple limit rods 4 on the outer wall of the closing cover 2, the closing cover 2 can be fixed from multiple directions at the same time, so that the closing cover 2 can better fit on the outer wall of the filter bin 1, thereby better supplying water to the inner cavity of the filter bin 1, and the tight connection can effectively avoid water leakage.

[0029] In a preferred embodiment, a control panel and a frequency monitor are installed on the top of the detection tube 11 , and the control panel and the frequency monitor are electrically connected to the pressure switch 15 and the sound and light alarm 16 , respectively.

[0030] By installing a frequency monitor on the top of the detection tube 11, the trigger frequency of the pressure switch 15 can be detected under the action of the frequency monitor. When normal water flows through the inner cavity of the detection tube 11, the driving plate 13 can be driven to rotate, thereby triggering the pressure switch 15 under the action of the trigger rod on the outer wall of the rotating shaft 12, and the trigger frequency within a fixed time is monitored under the action of the frequency monitor.

[0031] In a preferred embodiment, a trigger rod is fixedly mounted on the outer wall of the rotating shaft 12 , and the outer wall of the trigger rod is in contact with the outer wall of the pressure switch 15 .

[0032] By installing a trigger rod on the outer wall of the rotating shaft 12, when water flows normally through the inner cavity of the detection tube 11, the water flow will drive the rotating shaft 12 to rotate, thereby driving the trigger rod to rotate under the action of the rotating shaft 12, so that the outer wall of the trigger rod can contact the pressure switch 15, thereby triggering the pressure switch 15, and monitoring the triggered frequency within a certain period of time under the action of the frequency detector.

[0033] Working principle: During the use of the above-mentioned device, when the device is needed to treat water for injection, water is supplied from the outer wall of the closing cover 2 to the inner cavity of the filter chamber 1. At this time, the water will be filtered by the filter membrane in the inner cavity of the filter chamber 1, and the filtered water will flow out from the inner cavity of the detection tube 11, and impurities will flow out from the inner cavity of the sewage pipe 10. With the use of the device, the outer wall of the filter membrane 17 will be blocked to varying degrees. At this time, water cannot pass through the outer wall of the filter membrane 17 well. At this time, the filtering efficiency of the filter membrane 17 will be reduced, and the water flowing out of the inner cavity of the detection tube 11 will be reduced. At this time, the driving plate 13 and the rotating shaft 12 are in the water flow. Under the impact, the rotation speed will decrease. At this time, the number of times the pressure switch 15 is triggered by the trigger rod within a certain period of time will also decrease, so that it can be discovered in time under the action of the frequency monitor and the control class. At this time, the sound and light alarm 16 can be turned on under the action of the control panel, and the sound and light alarm 16 reminds the user to replace or clean the filter membrane 17. When replacing and cleaning the filter membrane 17, it is only necessary to pull the pull rod 7 upward so that the outer wall of the pull rod 7 moves out of the inner cavity of the limit rod 4, and then the closing cover 2 can be pulled away from the outer wall of the filter bin 1, so that the filter membrane 17 in the inner cavity of the filter bin 1 can be replaced very conveniently.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing water for injection by a reverse osmosis ultrafiltration combined membrane method, comprising a filtration chamber (1), characterized in that: The outer wall of the filter bin (1) is provided with a closing cover (2), the outer wall of the filter bin (1) is fixedly provided with a fixing plate (3), the outer wall of the closing cover (2) is fixedly provided with a limiting rod (4), the outer wall of the fixing plate (3) is fixedly provided with a supporting plate (5), the top of the supporting plate (5) is fixedly provided with a fixing cylinder (6), the inner cavity of the fixing cylinder (6) is movably sleeved with a pull rod (7), the outer wall of the pull rod (7) is movably sleeved with a driving spring (8), the outer wall of the pull rod (7) is fixedly provided with a limiting ring (9), and the filter bin (1) is provided with a plurality of fixing rings (11). A sewage pipe (10) is fixedly mounted on the outer wall, a detection tube (11) is installed on the outer wall of the filter chamber (1), a rotating shaft (12) is rotatably connected in the inner cavity of the detection tube (11), a driving plate (13) is fixedly mounted on the outer wall of the rotating shaft (12), a mounting plate (14) is fixedly mounted on the outer wall of the detection tube (11), a pressure switch (15) is installed on the outer wall of the mounting plate (14), an audible and visual alarm (16) is fixedly mounted on the top of the detection tube (11), and a filter membrane (17) is fixedly mounted in the inner cavity of the filter chamber (1).

2. The device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method according to claim 1, characterized in that: The two ends of the driving spring (8) are in contact with the inner wall of the fixing cylinder (6) and the outer wall of the limiting ring (9) respectively, and the outer wall diameter of the limiting ring (9) matches the inner wall diameter of the fixing cylinder (6).

3. The device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method according to claim 1, characterized in that: A limiting hole is provided at the top of the limiting rod (4), and the inner wall diameter of the limiting hole matches the outer wall diameter of the pull rod (7); the outer wall of one end of the pull rod (7) close to the limiting rod (4) is in an oblique cut shape.

4. The device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method according to claim 1, characterized in that: There are four limit rods (4), and the four limit rods (4) are respectively installed at equal distances on the outer wall of the closing cover (2).

5. The device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method according to claim 1, characterized in that: A control panel and a frequency monitor are installed on the top of the detection tube (11), and the control panel and the frequency monitor are electrically connected to the pressure switch (15) and the sound and light alarm (16) respectively.

6. The device for preparing water for injection by reverse osmosis ultrafiltration combined membrane method according to claim 1, characterized in that: A trigger rod is fixedly mounted on the outer wall of the rotating shaft (12), and the outer wall of the trigger rod is in contact with the outer wall of the pressure switch (15).

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