CN202265462U - Energy recovery and desalination system by plunger pump - Google Patents

Abstract

The utility model discloses an energy recovery and desalination system using a plunger pump, aiming at providing an energy recovery and desalination system using a plunger pump with stable operation, low cost and simplified process structure. The utility model comprises an energy recovery device (5), a water supply pump (1), a pretreatment device (2), a plunger type high-pressure pump (3), and a reverse osmosis membrane module (4) connected in sequence. The energy recovery device ( 5) A low-pressure water inlet (51), a high-pressure water outlet (52), a high-pressure water inlet (53), and a low-pressure discharge port (54) are provided, and the low-pressure water inlet (51) is connected to the pretreatment device (2). The high-pressure water outlet (52) is connected to the plunger type high-pressure pump (3), the high-pressure water inlet (53) is connected to the reverse osmosis membrane module (4), the low-pressure discharge port (54) is the concentrated water discharge port, and the reverse osmosis membrane module (4) It is connected with a fresh water port (41). The utility model can be widely used in the field of reverse osmosis brackish water desalination manufacturing.

Description

An energy recovery desalination system using a plunger pump

technical field

The utility model relates to an energy recovery and desalination system adopting a plunger pump.

Background technique

In the reverse osmosis system, more and more attention is paid to the application of energy recovery function. The reasonable application of energy recovery device can save part of the energy to achieve the goal of energy saving. In the existing energy recovery system, the application of high-pressure pump is basically based on centrifugal high-pressure The pump is the main part, and the auxiliary centrifugal booster pump and energy recovery device form a complete system. The high-pressure centrifugal pump used in this energy recovery device is controlled by frequency conversion, and the flow and pressure are difficult to control, so the working state is unstable. There are technical defects such as high cost and relatively complicated process.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an energy recovery and desalination system using a plunger pump with stable operation, low cost and simplified process structure.

The technical scheme adopted by the utility model is: the utility model includes a water supply pump, a pretreatment device, and a reverse osmosis membrane module, and the energy recovery and desalination system using a plunger pump also includes a plunger type high-pressure pump and an energy recovery device. The water supply pump, pretreatment device, plunger-type high-pressure pump, and reverse osmosis membrane module are sequentially connected, and the energy recovery device is provided with a low-pressure water inlet, a high-pressure water outlet, a high-pressure water inlet, and a low-pressure discharge port. The low-pressure water inlet and The pretreatment device is connected, the high-pressure water outlet is connected to the plunger type high-pressure pump, the high-pressure water inlet is connected to the reverse osmosis membrane module, the low-pressure discharge port is a concentrated water discharge port, and the reverse osmosis membrane The components are connected with a fresh water port.

A buffer pipeline is provided between the plunger type high-pressure pump and the reverse osmosis membrane module.

A booster pump is provided between the energy recovery device and the buffer pipeline.

The pretreatment device includes a primary filter device, and the primary filter device includes a multimedia filter and an activated carbon filter connected in sequence.

The pretreatment device also includes a secondary filter device, and the secondary filter device includes a security filter and a precision filter connected in sequence.

The beneficial effects of the utility model are: the high-pressure plunger pump used in the utility model belongs to the quantitative type pump, the flow rate is constant, as long as the speed is set, the flow rate remains unchanged, the working state is stable and reliable, and the electrical control and frequency conversion settings are relatively Simple, compared with the existing centrifugal high-pressure pump, the high-pressure plunger pump of the utility model has higher cost performance, better stability during operation, and the process structure is effectively simplified and optimized, and the overall operating cost is lower.

Description of drawings

Fig. 1 is a schematic block diagram of the utility model;

Fig. 2 is another block diagram of the utility model

Fig. 3 is a schematic diagram of the connection structure of the present invention.

Detailed ways

As shown in Figures 1 and 3, the utility model includes a water supply pump 1, a pretreatment device 2, and a reverse osmosis membrane module 4. The energy recovery and desalination system using a plunger pump also includes a plunger type high-pressure pump 3, an energy recovery The device 5, the water supply pump 1, the pretreatment device 2, the plunger type high-pressure pump 3, and the reverse osmosis membrane module 4 are sequentially connected, and the energy recovery device 5 is provided with a low-pressure water inlet 51, a high-pressure water outlet 52, and a high-pressure water inlet 53. Low-pressure discharge port 54, the low-pressure water inlet 51 is connected to the pretreatment device 2, the high-pressure water outlet 52 is connected to the plunger type high-pressure pump 3, and the high-pressure water inlet 53 is connected to the reverse osmosis membrane module 4, the low-pressure discharge port 54 is a concentrated water discharge port, and the reverse osmosis membrane module 4 is connected with a fresh water port 41.

As shown in FIG. 2 , a buffer pipeline 31 is provided between the plunger type high-pressure pump 3 and the reverse osmosis membrane module 4 . A booster pump 32 is provided between the energy recovery device 5 and the buffer pipeline 31 to increase the pressure and improve the efficiency.

The pretreatment device 2 includes a primary filter device, and the primary filter device includes a multimedia filter 21 and an activated carbon filter 22 connected in sequence.

The pretreatment device 2 also includes a secondary filter device, and the secondary filter device includes a security filter 23 and a precision filter 24 connected in sequence.

During implementation, the water supply pump 1 is powered on to supply water, and the raw water is filtered through the multimedia filter 21, activated carbon filter 22, security filter 23, and precision filter 24 in the pretreatment device 2, Then, a part of the raw water enters the plunger type high-pressure pump 3 for pressurization; another part of the raw water enters the energy recovery device through the low-pressure water inlet 51 of the energy recovery device 5, and is exchanged with the concentrated water pressure to become high-pressure raw water by the energy recovery device 5. The high-pressure water outlet 52 of the energy recovery device 5 enters the booster pump 32 to pressurize and enter the reverse osmosis membrane module 4 together with the water outlet of the plunger high-pressure pump 3 for desalination treatment. The fresh water produced is stored through the fresh water port 41, and the fresh water produced can reach the According to domestic water quality requirements, the concentrated water of the produced water is discharged through the low-pressure discharge port 54 of the energy recovery device after exchanging pressure with the raw water through the high-pressure water inlet 53 of the energy recovery device 5 .

The utility model can be widely used in the field of reverse osmosis brackish water desalination manufacturing.

Claims (5)

1. energy recovery desalination system that adopts rampump; Comprise working shaft (1), pretreatment unit (2), reverse osmosis membrane assembly (4); It is characterized in that: the energy recovery desalination system of said employing rampump also comprises plunger type high-pressure pump (3), energy recycle device (5); Said working shaft (1), pretreatment unit (2), plunger type high-pressure pump (3), reverse osmosis membrane assembly (4) connect successively; Said energy recycle device (5) is provided with low-pressure intake (51), high-pressure outlet (52), high pressure intake (53), low pressure drain (54); Said low-pressure intake (51) is connected with said pretreatment unit (2), and said high-pressure outlet (52) is connected with said plunger type high-pressure pump (3), and high pressure intake (53) are connected with said reverse osmosis membrane assembly (4); Said low pressure drain (54) is the concentrated water discharge mouth, and said reverse osmosis membrane assembly (4) is connected with fresh water mouth (41).

2. a kind of energy recovery desalination system that adopts rampump according to claim 1 is provided with buffering pipeline (31) between said plunger type high-pressure pump (3) and the said reverse osmosis membrane assembly (4).

3. a kind of energy recovery desalination system that adopts rampump according to claim 2 is provided with topping-up pump (32) between said energy recycle device (5) and the buffering pipeline (31).

4. according to claim 1 or 2 or 3 described a kind of energy recovery desalination systems that adopt rampump; It is characterized in that: said pretreatment unit (2) comprises the one-level filtration unit, and said one-level filtration unit comprises more medium filter (21), the activated charcoal filter (22) that connects successively.

5. a kind of energy recovery desalination system that adopts rampump according to claim 4; It is characterized in that: said pretreatment unit (2) also comprises the cascade filtration device, and said cascade filtration device comprises security personnel's strainer (23) and the accurate filter (24) that connects successively.

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