Combined horizontal security filter sewage blockage automatic inspection and recognition device

Abstract

The utility model discloses an automatic inspection and recognition device for sewage blockage of a combined horizontal security filter, which belongs to the technical field of filter detection and comprises a plurality of horizontal membrane shells, filter elements arranged in the horizontal membrane shells, a main water inlet pipe of the combined horizontal security filter, a main water outlet pipe of the combined horizontal security filter and connecting pipelines. An instrument pipe is arranged on the water inlet side of each horizontal membrane shell, an electromagnetic valve is arranged on each instrument pipe, the instrument pipes behind all the electromagnetic valves are converged into a mother pipe, a pressure difference transmitter is arranged on the mother pipe, and the other end of the mother pipe is connected to a main water outlet pipe of the combined horizontal security filter; and all the electromagnetic valves and the pressure difference transmitter are connected with an analysis and alarm system. According to the utility model, the electromagnetic valves and the pressure difference transmitters are arranged, so that the automatic inspection of the inlet and outlet water pressure difference of each horizontal membrane shell is realized, and an alarm signal is given when the filter element needs to be replaced, so that not only is the accurate control realized, but also the labor intensity of workers is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filter detection, in particular to a combined horizontal safety filter fouling automatic inspection and identification device. Background Art

[0002] In the reverse osmosis pre-desalted water treatment system, a security filter needs to be installed to filter particulate impurities in the water body to prevent the reverse osmosis membrane from being scratched by particulate matter during operation. The horizontal security filter body is composed of multiple membrane shells, which are arranged horizontally. Each membrane shell is installed with 1-3 filter elements. When designing the product, the overall height of the horizontal security filter needs to be controlled according to the amount of water to be treated to facilitate manual inspection and replacement of the filter element. Each membrane shell is relatively independent and connected by an inlet and outlet main pipes. During actual operation, the fouling and clogging of the filter element in each membrane shell will gradually differ due to factors such as uneven water flow distribution. There must be a group of filter elements that are blocked first and need to be replaced in advance.

[0003] In the existing conventional design, one method is to judge the life of the filter element by the accumulated running time, and the other method is to manually measure the pressure difference between the inlet and outlet of each membrane shell to check the fouling and blockage of each group of filter elements one by one, and manually judge whether they need to be replaced. The former method may cause some filter elements to be replaced in advance before their service life has reached the end, and the latter method has a large workload for manual inspection, especially when there are a large number of reverse osmosis devices, the workload of filter element inspection is very large, and the overall level of system automation is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a combined horizontal safety filter blockage automatic inspection and identification device, which realizes automatic inspection of the inlet and outlet water pressure difference of each membrane shell by configuring a solenoid valve and a pressure differential transmitter, and gives an alarm signal when the filter element needs to be replaced, thereby achieving precise control and greatly reducing the intensity of manual labor.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An automatic inspection and identification device for combined horizontal safety filter blockage includes a plurality of horizontal membrane shells, filter elements arranged in the horizontal membrane shells, a total water inlet pipe of the combined horizontal safety filter, a total water outlet pipe of the combined horizontal safety filter and various connecting pipelines, characterized in that: an instrument pipe is arranged on the water inlet side of each horizontal membrane shell, a solenoid valve is arranged on the instrument pipe, the instrument pipes after all the solenoid valves are gathered into a mother pipe, a differential pressure transmitter is arranged on the mother pipe, and the other end of the mother pipe is connected to the total water outlet pipe of the combined horizontal safety filter; all the solenoid valves and the differential pressure transmitter are connected to the analysis and alarm system.

[0007] The further improvement of the technical solution of the utility model is that: a first butterfly valve is arranged on the main water inlet pipe of the combined horizontal safety filter; and a second butterfly valve is arranged on the main water outlet pipe of the combined horizontal safety filter.

[0008] A further improvement of the technical solution of the utility model is that all the solenoid valves and the differential pressure transmitter are connected to the analysis and alarm system through a signal line.

[0009] A further improvement of the technical solution of the utility model is that the signals provided by all the solenoid valves and the differential pressure transmitter to the analysis and alarm system are all 4-20mA DC signals.

[0010] A further improvement of the technical solution of the utility model is that the analysis and alarm system is controlled by a time relay.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0012] 1. The utility model arranges an instrument tube on the water inlet side of each horizontal membrane shell, arranges an electromagnetic valve on the instrument tube, collects the instrument tubes after all the electromagnetic valves into a mother tube, arranges a differential pressure transmitter on the mother tube, and the other end of the mother tube is connected to the main water outlet pipe; all the electromagnetic valves and differential pressure transmitters are connected to the analysis and alarm system, realizes the automatic inspection of the inlet and outlet water pressure difference of each horizontal membrane shell, effectively detects the fouling and blockage of the filter element in each horizontal membrane shell, and gives an alarm signal when the filter element needs to be replaced, which not only realizes precise control, but also can greatly reduce the labor intensity of manual labor, and at the same time reduces the frequency of manual replacement of filter elements.

[0013] 2. The utility model has a simple structure and strong applicability. It is suitable for combined horizontal safety filters of various processing capacities and is also suitable for system transformation of existing horizontal safety filters.

[0014] 3. The utility model analyzes the clogging level of the filter element, maximizes the filtering effect of each group of filter elements, saves filter element consumption, and thus saves the operating cost of the water treatment desalination system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of a combined horizontal safety filter blockage automatic inspection and identification device provided in an embodiment of the utility model;

[0017] Among them, 1. horizontal membrane shell; 2. instrument tube; 3. solenoid valve; 4. main pipe; 5. differential pressure transmitter; 6. analysis and alarm system. DETAILED DESCRIPTION

[0018] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0022] like Figure 1 As shown, an automatic inspection and identification device for fouling of a combined horizontal safety filter comprises a plurality of horizontal membrane shells 1, filter elements arranged in the horizontal membrane shells, a total water inlet pipe of the combined horizontal safety filter, a total water outlet pipe of the combined horizontal safety filter and various connecting pipelines, an instrument pipe 2 is arranged on the water inlet side of each horizontal membrane shell 1, a solenoid valve 3 is arranged on the instrument pipe 2, the instrument pipes after all the solenoid valves 3 are collected into a mother pipe 4, a differential pressure transmitter 5 is arranged on the mother pipe 4, and the other end of the mother pipe 4 is connected to the total water outlet pipe of the combined horizontal safety filter; all the solenoid valves 3 and the differential pressure transmitter 5 are connected to the analysis and alarm system 6.

[0023] Specifically, the differential pressure transmitter has an IP67 protection level, a DC24V two-wire connection, a HART communication protocol, and outputs a 4-20mA analog signal. It has an on-site LCD display to display real-time measurement values ​​on-site. The signals of the solenoid valve and the differential pressure transmitter are sent to the analysis and alarm system 6 through a communication cable.

[0024] Furthermore, a first butterfly valve is provided on the main water inlet pipe of the reverse osmosis water pump of the combined horizontal safety filter; a second butterfly valve is provided on the main water outlet pipe to the reverse osmosis high-pressure pump of the combined horizontal safety filter.

[0025] Furthermore, all the solenoid valves 3 and the differential pressure transmitters 5 are connected to the analysis and alarm system 6 via signal lines. The signal lines may be communication cables.

[0026] Furthermore, the signals provided by all the solenoid valves 3 and the differential pressure transmitters 5 to the analysis and alarm system 6 are 4-20 mA DC signals.

[0027] Furthermore, the analysis and alarm system 6 is controlled by a time relay.

[0028] Working principle:

[0029] The analysis and alarm system 6 can use a time relay, or a logic control program for automatic inspection can be set.

[0030] When the time relay is used, the time relay controls the opening sequence of all the solenoid valves 3. One solenoid valve 3 is opened each time to realize the automatic inspection mode of the solenoid valve 3 opening in a cycle. In the initial state, the solenoid valves 3 are all in the closed state. The time interval of each solenoid valve 3 can be 5 minutes or 10 minutes. When the solenoid valve 3 is opened, the filter element in the horizontal membrane shell 1 connected thereto will be tested for the operating pressure difference. According to this principle, the operating pressure difference of the filter element in each horizontal membrane shell 1 will be tested once every 5 minutes or 10 minutes, and the pressure difference data of each test will be recorded. When the operating pressure difference exceeds the set value (M, which can be adjusted according to the actual operating data), an alarm signal is automatically output to prompt that the filter element needs to be replaced.

[0031] When the logic control program of automatic inspection is set, the solenoid valve 3 is controlled in automatic inspection mode. In the initial state, the solenoid valve 3 is in the closed state and can be opened individually at a time interval of 5 minutes or 10 minutes. When the solenoid valve 3 is opened, the filter element in the horizontal membrane shell 1 connected thereto will be tested for the operating pressure difference. According to this principle, the operating pressure difference of the filter element in each horizontal membrane shell 1 will be tested once every 5 minutes or 10 minutes, and the pressure difference data of each test will be recorded. The pressure difference change curve of the filter element in each horizontal membrane shell 1 is obtained through the software. When the operating pressure difference exceeds the set value, an alarm signal is automatically output to prompt that the filter element needs to be replaced.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An automatic inspection and identification device for a combined horizontal safety filter, comprising a plurality of horizontal membrane shells (1), filter elements arranged in the horizontal membrane shells, a total water inlet pipe of the combined horizontal safety filter, a total water outlet pipe of the combined horizontal safety filter and various connecting pipes, characterized in that: An instrument pipe (2) is provided on the water inlet side of each horizontal membrane shell (1), and a solenoid valve (3) is provided on the instrument pipe (2). The instrument pipes after all the solenoid valves (3) are gathered into a main pipe (4), and a differential pressure transmitter (5) is provided on the main pipe (4). The other end of the main pipe (4) is connected to the main water outlet pipe of the combined horizontal safety filter; all the solenoid valves (3) and the differential pressure transmitter (5) are connected to the analysis and alarm system (6).

2. According to claim 1, a combined horizontal safety filter blockage automatic inspection and identification device is characterized by: A first butterfly valve is arranged on the main water inlet pipe of the combined horizontal safety filter; and a second butterfly valve is arranged on the main water outlet pipe of the combined horizontal safety filter.

3. According to claim 1, a combined horizontal safety filter blockage automatic inspection and identification device is characterized by: All the solenoid valves (3) and the differential pressure transmitter (5) are connected to the analysis and alarm system (6) via a signal line.

4. According to claim 3, a combined horizontal safety filter blockage automatic inspection and identification device is characterized by: The signals provided by all the solenoid valves (3) and the differential pressure transmitter (5) to the analysis and alarm system (6) are all 4-20 mA DC signals.

5. According to claim 1, the combined horizontal safety filter blockage automatic inspection and identification device is characterized by: The analysis and alarm system (6) is controlled by a time relay.

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