Skid-mounted pretreatment device for desalted water treatment

Abstract

The utility model discloses a skid-mounted pretreatment device for desalted water treatment, which comprises a filter membrane component and a medicine mixing tank mounted at the water inlet end of the filter membrane component, and the medicine mixing tank and the filter membrane component are both mounted on a steel chassis; a mixing pipe is arranged in an inner cavity of the medicine mixing tank, a water inlet pipe and a medicine inlet pipe are connected to the side wall of the bottom of the mixing pipe and extend to the outer wall of the medicine mixing tank, and the medicine inlet pipe is connected with a medicine supply part; an annular cavity is formed between the pesticide mixing tank and the mixing pipe, the top of the mixing pipe is communicated with the annular cavity, a water outlet pipe communicated with the annular cavity is connected to the pesticide mixing tank, and a spiral stirring piece is arranged in the mixing pipe and used for mixing water and pesticide and driving liquid to rise to the top of the mixing pipe; according to the utility model, desalted water can be pretreated, namely, the desalted water is firstly subjected to chemical adding treatment and then enters a membrane, water and chemicals before entering the membrane can be mixed in the chemical mixing tank, so that the subsequent water filtration is more effective, and the device is fixed on the steel chassis, so that the subsequent overall movement of the device is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of desalination treatment technology, specifically a skid-mounted pretreatment device for desalination treatment. Background Technology

[0002] Demineralized water treatment, also known as pure water treatment or deep demineralization, typically removes easily removable strong conductive substances from the water, as well as difficult-to-remove weak electrolytes such as silica and carbon dioxide, reducing the water to a certain level. During treatment, the water undergoes varying degrees of filtration by different processing units.

[0003] In a continuous recyclable desalination system disclosed in patent publication number CN211871676U, wastewater enters the self-cleaning filter through the inlet of a water pump via a water guide pipe on one side of the sedimentation tank. First, it passes through a coarse filter element to remove larger particles of impurities. Then, it reaches a fine filter screen, which removes smaller particles of impurities. The clean water is then discharged from the outlet and enters the UF (Ultra-Frequency) device for further filtration. The RO (Reverse Oxidation) device effectively removes charged ions, inorganic substances, colloidal particles, bacteria, and organic matter from the water. The water then re-enters the disinfection device for sterilization. Ultraviolet germicidal lamps further disinfect the water, and the impurity adsorption mesh ensures adequate filtration performance.

[0004] The aforementioned desalination water treatment system can perform multiple filtrations followed by disinfection and sterilization. However, in actual use, the coarsely filtered water is directly passed into subsequent filtration components, making it difficult to remove some water-soluble impurities, which requires improvement. Furthermore, the system is fixed in one location, making it inconvenient to move. To address these issues, a skid-mounted pretreatment device for desalination water treatment is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a skid-mounted pretreatment device for desalination treatment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A skid-mounted pretreatment device for desalination includes a filter membrane assembly and a mixing tank installed at the inlet end of the filter membrane assembly, wherein both the mixing tank and the filter membrane assembly are mounted on a steel chassis.

[0008] The mixing tank has a mixing pipe inside, and a water inlet pipe and a medicine inlet pipe are connected to the bottom side wall of the mixing pipe. Both the water inlet pipe and the medicine inlet pipe extend to the outer wall of the mixing tank, and the medicine inlet pipe is connected to a medicine supply device.

[0009] An annular cavity is provided between the mixing tank and the mixing pipe. The top of the mixing pipe is connected to the annular cavity. A water outlet pipe connected to the annular cavity is connected to the mixing tank. A spiral stirring element is provided inside the mixing pipe to mix water and medicine and drive the liquid to rise to the top of the mixing pipe.

[0010] Preferably, the medicine supply unit includes a medicine supply tank and a water pump. A pressure regulating pipe is installed on the top cover of the medicine supply tank. The water outlet of the medicine supply tank is connected to the water pump through a pipeline, and the water outlet of the water pump is connected to the medicine inlet pipe.

[0011] Preferably, the spiral stirring component includes a central rod and spiral blades connected to the central rod. The spiral blades cooperate with the inner wall of the mixing tube. A cover plate is connected to the top of the mixing tank, and a motor for driving the central rod to rotate is installed on the cover plate.

[0012] Preferably, a rotating rod is fixedly connected to the bottom end of the central rod, a positioning seat is installed at the bottom of the inner cavity of the mixing tube, and the positioning seat is rotatably connected to the bottom end of the rotating rod.

[0013] Preferably, the top sidewall of the mixing tube is connected to three sets of support rods arranged in a ring array, and the end of the support rod away from the mixing tube is connected to the inner wall of the mixing tank.

[0014] Preferably, the water outlet end of the water outlet pipe is connected to the water inlet end of the filter membrane assembly.

[0015] Preferably, both the mixing tank and the supply tank have positioning blocks connected to the bottom of their annular sidewalls, and the positioning blocks are fixed to the steel chassis by bolts.

[0016] Preferably, the top of the steel chassis is connected to a mounting bracket for positioning the filter membrane assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention can pre-treat desalinated water, that is, dosing chemicals before it enters the membrane. The water and chemicals before entering the membrane can be mixed in the mixing tank. Agents such as bactericide sodium hypochlorite, scale inhibitor, or reducing agent sodium bisulfite can be selected to make subsequent water filtration more effective.

[0019] This utility model is fixed on a steel chassis, which facilitates the subsequent relocation of the entire device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the medicine supply component in this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the mixing tank of this utility model.

[0023] In the diagram: 11. Steel chassis; 12. Mixing tank; 13. Supply tank; 14. Water outlet pipe; 15. Filter membrane assembly; 16. Mounting frame; 17. Water inlet pipe; 18. Drug inlet pipe; 19. Water pump; 20. Pressure regulating pipe; 21. Mixing pipe; 22. Support rod; 23. Center rod; 24. Spiral blade; 25. Positioning seat; 26. Motor; 27. Cover plate; 28. Annular cavity. Detailed Implementation

[0024] Please see Figures 1-3 In this embodiment of the present invention, a skid-mounted pretreatment device for desalination includes a filter membrane assembly 15 and a mixing tank 12 installed at the inlet end of the filter membrane assembly 15. Both the mixing tank 12 and the filter membrane assembly 15 are mounted on a steel chassis 11. The filter membrane assembly 15 can be an existing reverse osmosis membrane, ultrafiltration column membrane assembly, etc. Other water treatment components can also be installed on the steel chassis 11 as needed.

[0025] The mixing tank 12 has a mixing pipe 21 in its inner cavity. The bottom side wall of the mixing pipe 21 is connected to a water inlet pipe 17 and a medicine inlet pipe 18. Both the water inlet pipe 17 and the medicine inlet pipe 18 extend to the outer wall of the mixing tank 12. The medicine inlet pipe 18 is connected to a medicine supply device.

[0026] The mixing tank 12 can mix the water and chemicals before they enter the membrane. Sodium hypochlorite, scale inhibitor, or reducing agent such as sodium bisulfite can be used to make the subsequent water filtration more effective.

[0027] An annular cavity 28 is provided between the mixing tank 12 and the mixing tube 21. The top of the mixing tube 21 is connected to the annular cavity 28. A water outlet pipe 14 connected to the annular cavity 28 is connected to the mixing tank 12. A spiral stirring element is provided inside the mixing tube 21 to mix water and medicine and drive the liquid to rise to the top of the mixing tube 21. The liquid formed after the water and medicine are mixed can enter the annular cavity 28 and be discharged to the filter membrane assembly 15 through the water outlet pipe 14.

[0028] The drug supply unit includes a drug supply tank 13 and a water pump 19. A pressure regulating pipe 20 is installed on the top cover of the drug supply tank 13. The water outlet of the drug supply tank 13 is connected to the water pump 19 through a pipeline. The water outlet of the water pump 19 is connected to the drug inlet pipe 18. In actual use, the required drug is added into the drug supply tank 13. The water pump 19 can pump the drug into the mixing pipe 21. The setting of the pressure regulating pipe 20 can prevent the pressure from being too low when the drug in the drug supply tank 13 is reduced.

[0029] The spiral stirring component includes a central rod 23 and spiral blades 24 connected to the central rod 23. The spiral blades 24 cooperate with the inner wall of the mixing tube 21. The top of the mixing tank 12 is connected to a cover plate 27, and a motor 26 for driving the central rod 23 to rotate is installed on the cover plate 27.

[0030] When the motor 26 is working, it drives the central rod 23 to rotate, which in turn drives the spiral blade 24 to rotate. This causes the liquid to rise to the top of the mixing tube 21 and mixes the liquid while it rises, thus effectively mixing the water and the medicine.

[0031] The bottom end of the central rod 23 is fixedly connected to the rotating rod, and the bottom of the inner cavity of the mixing tube 21 is equipped with a positioning seat 25. The bottom end of the rotating rod is rotatably connected to the positioning seat 25. The rotating rod can rotate on the positioning seat 25. The setting of the rotating rod and the positioning seat 25 makes the rotation of the central rod 23 more stable.

[0032] The top sidewall of the mixing tube 21 is connected to three sets of support rods 22 arranged in a ring array. The end of the support rod 22 away from the mixing tube 21 is connected to the inner wall of the mixing tank 12. The support rod 22 can provide further support for the mixing tube 21.

[0033] The outlet end of the water pipe 14 is connected to the inlet end of the filter membrane assembly 15.

[0034] The bottom of the annular sidewall of both the mixing tank 12 and the supply tank 13 is connected to a positioning block, which is fixed to the steel chassis 11 by bolts; this facilitates the use of bolts to fix the mixing tank 12 and the supply tank 13 to the steel chassis 11.

[0035] The top of the steel chassis 11 is connected to a mounting bracket 16 for positioning the filter membrane assembly 15.

[0036] When this utility model is in use, the wastewater after coarse filtration or sedimentation can be introduced into the mixing pipe 21 through the inlet pipe. At the same time, the water pump 19 works to pump the medicine in the supply tank 13 into the mixing pipe 21. The setting of the pressure regulating pipe 20 can avoid the pressure being too low when the medicine in the supply tank 13 decreases. When the motor 26 works, it drives the central rod 23 to rotate, which can drive the spiral blade 24 to rotate, which can drive the liquid to rise to the top of the mixing pipe 21 and mix it while driving the liquid to rise. The liquid flows into the annular cavity 28, and then flows from the outlet pipe 14 to the filter membrane assembly 15 for filtration.

Claims

1. A skid-mounted pretreatment device for desalination treatment, comprising a filter membrane assembly (15) and a mixing tank (12) installed at the inlet end of the filter membrane assembly (15), wherein both the mixing tank (12) and the filter membrane assembly (15) are mounted on a steel chassis (11); Its features are: The mixing tank (12) has a mixing pipe (21) inside. The bottom side wall of the mixing pipe (21) is connected to a water inlet pipe (17) and a medicine inlet pipe (18). Both the water inlet pipe (17) and the medicine inlet pipe (18) extend to the outer wall of the mixing tank (12). The medicine inlet pipe (18) is connected to a medicine supply device. An annular cavity (28) is provided between the mixing tank (12) and the mixing pipe (21). The top of the mixing pipe (21) is connected to the annular cavity (28). A water outlet pipe (14) connected to the annular cavity (28) is provided on the mixing tank (12). A spiral stirring component is provided inside the mixing pipe (21) to mix water and medicine and drive the liquid to rise to the top of the mixing pipe (21).

2. The skid-mounted pretreatment device for desalination treatment according to claim 1, characterized in that: The medicine supply unit includes a medicine supply tank (13) and a water pump (19). A pressure regulating pipe (20) is installed on the top cover of the medicine supply tank (13). The water outlet of the medicine supply tank (13) is connected to the water pump (19) through a pipeline. The water outlet of the water pump (19) is connected to the medicine inlet pipe (18).

3. The skid-mounted pretreatment device for desalination treatment according to claim 1, characterized in that: The spiral stirring component includes a central rod (23) and spiral blades (24) connected to the central rod (23). The spiral blades (24) cooperate with the inner wall of the mixing tube (21). The top of the mixing tank (12) is connected to a cover plate (27), and a motor (26) for driving the central rod (23) to rotate is installed on the cover plate (27).

4. The skid-mounted pretreatment device for desalination treatment according to claim 3, characterized in that: The bottom end of the central rod (23) is fixedly connected to the rotating rod, and a positioning seat (25) is installed at the bottom of the inner cavity of the mixing tube (21). The bottom end of the rotating rod is rotatably connected to the positioning seat (25).

5. The skid-mounted pretreatment device for desalination treatment according to claim 1, characterized in that: The top sidewall of the mixing tube (21) is connected to three sets of support rods (22) arranged in a ring array. The end of the support rod (22) away from the mixing tube (21) is connected to the inner wall of the mixing tank (12).

6. The skid-mounted pretreatment device for desalination treatment according to claim 1, characterized in that: The outlet end of the water pipe (14) is connected to the inlet end of the filter membrane assembly (15).

7. A skid-mounted pretreatment device for desalination treatment according to claim 2, characterized in that: The bottom of the annular sidewall of both the mixing tank (12) and the supply tank (13) is connected to a positioning block, which is fixed to the steel chassis (11) by bolts.

8. A skid-mounted pretreatment device for desalination treatment according to claim 1, characterized in that: The top of the steel chassis (11) is connected to a mounting bracket (16) for positioning the filter membrane assembly (15).

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