Water treatment automatic switching system and heading machine

Abstract

The utility model discloses a water treatment self-switching system and a heading machine, which comprise a water supply pipeline respectively communicated with a tunnel water inlet and a heading machine water inlet, and two filtering components arranged on the water supply pipeline in parallel and used for being connected with a drain outlet, the detection control assembly is arranged on the water supply pipeline, electrically connected with the two filtering assemblies respectively and used for detecting the pressure difference of the two ends of the filtering assemblies on the water supply pipeline or the water supply flow of the water supply pipeline so as to control the water flowing conditions in the two filtering assemblies respectively according to the pressure difference or the water supply flow; therefore, normal water supply or self-cleaning water supply is realized; through cooperation of the water supply pipeline, the two filtering assemblies and the detection control assembly, automatic switching of two water treatment modes of normal water supply and self-cleaning water supply is achieved, compared with the prior art, the automation degree is high, the filtering effect is good, the water supply capacity is high, the water treatment requirement of long-term operation of the heading machine can be met, practicability is high, and popularization is easy. The method is suitable for wide popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunneling machine water treatment technical field, in particular to a kind of water treatment self-switching system. In addition, the utility model further relates to a kind of tunneling machine comprising the water treatment self-switching system described above. BACKGROUND

[0002] Although shield construction method is increasingly mature in tunnel construction engineering application, due to the uncertainty of tunnel water supply water quality is higher, shield tunnel water supply water quality generally large impurity content, often cause shield tunneling machine in precision components blockage or jam, therefore, need to configure water filter to process tunnel water supply, to improve tunnel water supply water quality, meet equipment demand.

[0003] For example, Chinese invention patent application CN116966673A discloses a kind of self-cleaning filter and its self-cleaning method, the self-cleaning filter, including shell, the bottom of the outer surface of shell is fixedly connected with liquid inlet device and liquid outlet pipe, the outer surface of shell is fixedly connected with PLC control box, blowdown valve and cleaning device, the end of shell is fixedly connected with fixed frame, the outer surface of fixed frame is fixedly connected with electric power motor, the output end of electric power motor is fixedly connected with connecting shaft, the inside of shell is provided with coarse filter screen and fine filter screen, the outer surface of connecting shaft is fixedly connected with dirt suction device, the inner wall of shell is fixedly connected with anti-blocking device, the inner surface of anti-blocking device is sleeved on the outer surface of coarse filter screen, through liquid inlet device, liquid can be pretreated, improve the practicability of filter, through cleaning device, coarse filter screen and fine filter screen can be fully brushed clean, without manual brush, improve cleaning efficiency.

[0004] For example, Chinese utility model patent CN218011342U discloses a kind of backwashing water filter device, including water filter box, water filter screen, electric three-way valve, electric two-way valve, electric four-way valve and slag scraping mechanism, three groups of water filter screens are fixedly connected in water filter box, water inlet pipe and water outlet pipe are fixedly connected on water filter box, slag discharge port is provided on the bottom of water filter box, each group of slag discharge port is fixedly connected on slag discharge pipe, electric two-way valve is fixedly connected on slag discharge pipe, electric three-way valve is fixedly connected on water inlet pipe, electric four-way valve is fixedly connected on water outlet pipe, the last group of interface of electric three-way valve and the remaining one group of interface of electric four-way valve are connected by backwashing pipe, the last group of interface of electric four-way valve is fixedly connected with pre-discharge pipe, pre-discharge pipe is fixedly connected between slag discharge pipe, water filter box is matched with each group of water filter screen and is provided with slag scraping mechanism.

[0005] However, the above water treatment device can realize two kinds of water treatment modes of water body filtration and self-cleaning, but it cannot automatically switch between the two kinds of water treatment modes according to the operation condition, the degree of automation is low, and it cannot meet the water treatment demand of shield tunneling machine long-term operation. Utility Model Content

[0006] This invention provides a water treatment self-switching system and a tunneling machine to solve the technical problem that the water treatment devices in existing tunneling machines have a low degree of automation and cannot meet the water treatment needs of long-term operation.

[0007] According to one aspect of this utility model, a water treatment self-switching system is provided, comprising a water supply pipeline for connecting a tunnel inlet and a tunnel boring machine inlet respectively, two filter components arranged in parallel on the water supply pipeline for connecting a sewage outlet, and a detection and control component arranged on the water supply pipeline and electrically connected to the two filter components respectively. The two filter components are used to operate alternately to filter water when the water flows in the forward direction or to transport water to the sewage outlet after self-cleaning when the water flows in the reverse direction. The detection and control component is used to detect the pressure difference between the two ends of the filter components on the water supply pipeline or the water supply flow rate of the water supply pipeline, so as to control the water flow in the two filter components according to the pressure difference or the water supply flow rate, thereby realizing normal water supply or self-cleaning water supply.

[0008] As a further improvement to the above technical solution:

[0009] Furthermore, the filtration assembly includes a first electrically controlled valve, a filter, a second electrically controlled valve, a drain pipe, and a third electrically controlled valve. The first electrically controlled valve, the filter, and the second electrically controlled valve are arranged sequentially on the water supply pipeline. The drain pipe is connected to the filter and is used to connect to the drain outlet. The third electrically controlled valve is installed on the drain pipe. The detection and control assembly is electrically connected to the first electrically controlled valve, the second electrically controlled valve, and the third electrically controlled valve, respectively.

[0010] Furthermore, the detection and control component includes two pressure sensors installed on the water supply pipeline and located at opposite ends of the filter assembly, a flow sensor installed on the outlet end of the water supply pipeline, and a controller electrically connected to the pressure sensor, the flow sensor, the first solenoid valve, the second solenoid valve, and the third solenoid valve, respectively.

[0011] Furthermore, the filter assembly also includes two ball valves installed on the water supply line and located at opposite ends of the filter.

[0012] Furthermore, the filter assembly also includes two pressure gauges installed on the water supply line and located at opposite ends of the filter.

[0013] Furthermore, a check valve is installed on the inlet end of one of the filter components.

[0014] Furthermore, the water treatment self-switching system also includes a temperature sensor installed on the water supply pipeline and electrically connected to the detection and control components.

[0015] Furthermore, the water treatment self-switching system also includes thermometers installed on the water supply pipeline.

[0016] Further, the water treatment self-switching system further comprises a pressure reducing valve and a safety valve arranged in sequence on the water supply pipeline.

[0017] According to another aspect of the utility model, a tunneling machine is further provided, which comprises the water treatment self-switching system.

[0018] The utility model has the advantages of the following beneficial effects:

[0019] The water treatment self-switching system of the utility model, through the water supply pipeline, is connected with the tunnel water inlet and the tunneling machine water inlet respectively, so that water is supplied to the tunneling machine through the water supply pipeline after the tunnel water inlet, and when the detection control assembly detects that the pressure difference of the filter assembly on the two ends of the water supply pipeline is within the set range and the water supply flow of the water supply pipeline is within the set range, the water flows into the two filter assemblies arranged in parallel on the water supply pipeline, under the control of the detection control assembly, one of the filter assemblies allows the water to pass through, so that the water flows forward, and the filter assembly works to filter the water, realizing normal water supply and filtration, improving the water quality of the tunnel, and the other filter assembly does not allow the water to pass through; when the detection control assembly detects that the pressure difference of the filter assembly on the two ends of the water supply pipeline is not within the set range or the water supply flow of the water supply pipeline is not within the set range, it means that the currently working filter assembly needs to be self-cleaned, at this time, under the control of the detection control assembly, the working filter assembly no longer allows the water to flow forward and is connected with the blowdown port, and the other filter assembly allows the water to pass through and filters the water, and after the water passes through the filter assembly, part of the water flows forward to the tunneling machine water inlet, and the other part of the water flows backward to the working filter assembly, so that after the filter assembly is cleaned, the water is discharged from the blowdown port, so that the filter assembly is self-cleaned without affecting normal water supply and filtration, and the two filter assemblies are used alternately, so that the two modes of normal water supply and self-cleaning water supply are realized; the water supply pipeline, the two filter assemblies and the detection control assembly are cooperated to realize the automatic switching of the two water treatment modes of normal water supply and self-cleaning water supply, compared with the prior art, the degree of automation is high, the filtration effect is good, the water supply capacity is strong, the water treatment demand of the tunneling machine for long-term operation can be met, the practicability is high, and the utility model is suitable for being widely promoted and applied.

[0020] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings that constitute a part of this application provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0022] Figure 1 is the flow path principle diagram of the water treatment self-switching system of the preferred embodiment of the utility model.

[0023] Legend:

[0024] 10, water supply pipeline; 20, filter assembly; 21, first electric control valve; 22, filter; 23, second electric control valve; 24, third electric control valve; 25, ball valve; 26, pressure gauge; 31, pressure sensor; 32, flow sensor; 41, temperature sensor; 42, temperature gauge; 51, pressure reducing valve; 52, safety valve; 60, check valve. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below in combination with the drawings, but the utility model can be implemented in multiple different ways limited and covered by the following.

[0026] As Figure 1 shown, the water treatment self-switching system of the embodiment includes a water supply pipeline 10 for respectively connecting a tunnel water inlet and a tunneling machine water inlet, two filter assemblies 20 arranged in parallel on the water supply pipeline 10 and used for connecting a sewage outlet, and a detection control assembly arranged on the water supply pipeline 10 and electrically connected with the two filter assemblies 20, respectively, the two filter assemblies 20 are used for alternating operation to filter water when the water flows forward or to deliver the water to the sewage outlet after self-cleaning when the water flows reversely, and the detection control assembly is used for detecting the pressure difference of the two ends of the filter assembly 20 on the water supply pipeline 10 or the water supply flow of the water supply pipeline 10 to control the water flow in the two filter assemblies 20 according to the pressure difference or the water supply flow, respectively, so as to realize normal water supply or self-cleaning water supply.

[0027] As Figure 1As shown, specifically, the water treatment self-switching system of the utility model, through water supply pipeline 10 respectively communicate tunnel water inlet and tunnel boring machine water inlet, to in the tunnel water supply after through water supply pipeline 10 to tunnel boring machine water supply, in the water supply process, when detecting control assembly detects that the pressure difference of filter assembly 20 on water supply pipeline 10 two ends is in the set range and the water supply flow of water supply pipeline 10 is in the set range, water respectively flows into two filter assemblies 20 that are arranged in parallel on water supply pipeline 10, under the control of detecting control assembly, one of filter assembly 20 allows water to pass through, to make water forward flow, the filter assembly 20 works to filter water, realize normal water supply filtration, improve tunnel water quality, another filter assembly 20 does not allow water to pass through, when detecting control assembly detects that the pressure difference of filter assembly 20 on water supply pipeline 10 two ends is not in the set range or the water supply flow of water supply pipeline 10 is not in the set range, that is, the filter assembly 20 currently working needs self-cleaning, at this time, under the control of detecting control assembly, the filter assembly 20 that has worked no longer allows water to flow forward, and is communicated with blow-off, another filter assembly 20 allows water to pass through, and filters water, and after water passes through the filter assembly 20, part of water flows forward to tunnel boring machine water inlet, and another part of water flows backward to the filter assembly 20 that has worked, to be discharged from blow-off after cleaning the filter assembly 20, to realize self-cleaning of filter assembly 20 without affecting normal water supply filtration, two filter assemblies 20 are used alternately, that is, two modes of normal water supply and self-cleaning water supply can be realized, the scheme realizes the automatic switching of two water treatment modes of normal water supply and self-cleaning water supply through water supply pipeline 10, two filter assemblies 20 and detecting control assembly, compared with the prior art, the degree of automation is high, the filtration effect is good, the water supply capacity is strong, can meet the water treatment needs of long-term operation of tunnel boring machine, the practicality is strong, is suitable for being widely promoted and applied.

[0028] It should be understood that the forward flow of water refers to the flow of water from the water inlet end of the water supply pipeline 10 to the water outlet end, and the water inlet end of the water supply pipeline 10 is communicated with the tunnel water inlet, and the water outlet end of the water supply pipeline 10 is communicated with the tunnel boring machine water inlet, and the backward flow of water refers to the flow of water from the water outlet end of the water supply pipeline 10 to the blow-off.

[0029] It should be understood that the electrical connection can be a wired electrical connection or a wireless electrical connection.

[0030] As Figure 1As shown, in this embodiment, the filter assembly 20 includes a first electrically controlled valve 21, a filter 22, a second electrically controlled valve 23, a drain pipe, and a third electrically controlled valve 24. The first electrically controlled valve 21, the filter 22, and the second electrically controlled valve 23 are arranged sequentially on the water supply pipeline 10. The drain pipe is connected to the filter 22 and is used to connect to the drain outlet. The third electrically controlled valve 24 is arranged on the drain pipe. The detection and control assembly is electrically connected to the first electrically controlled valve 21, the second electrically controlled valve 23, and the third electrically controlled valve 24 respectively.

[0031] like Figure 1 As shown, specifically, in the normal water supply mode, the detection and control component controls the first and second solenoid valves 21 and 23 of one of the filter components 20 to open, and the third solenoid valve 24 to close. Water flows into the filter 22 through the first solenoid valve 21, and after filtration, flows into the tunneling machine inlet through the second solenoid valve 23. The first solenoid valve 21, the second solenoid valve 23, and the third solenoid valve 24 of the other filter component 20 are all closed, preventing water from passing through. When, after a period of operation, it is found that the pressure difference between the two ends of the working filter component 20 on the water supply pipeline 10 is no longer within the set range, or the water supply flow rate is no longer within the set range, the system will switch to the self-cleaning water supply mode. At this time, the detection and control component controls the already working filter component 20 to open. The first solenoid valve 21 of the working filter assembly 20 is closed, the second solenoid valve 23 is closed after a set delay, and the third solenoid valve 24 is opened and closed after a set time. The first solenoid valve 21 and the second solenoid valve 23 of the other filter assembly 20 are opened, and the third solenoid valve 24 is closed. Water flows into the filter 22 through the first solenoid valve 21, is filtered, and then splits after passing through the second solenoid valve 23. One part flows to the inlet of the tunneling machine, and the other part flows back to the filter 22 through the second solenoid valve 23 to clean the filter 22. Then, it flows to the drain outlet through the third solenoid valve 24, thus completing the self-cleaning of the filter 22 within the set time. After the set time has passed, it automatically switches to the normal water supply mode.

[0032] It should be understood that the detection and control component can control the water flow in the filter assembly 20 by controlling the opening and closing of the first solenoid valve 21, the second solenoid valve 23 and the third solenoid valve 24 in the filter assembly 20.

[0033] Alternatively, in other embodiments, the electrically controlled valves such as the first electrically controlled valve 21, the second electrically controlled valve 23, and the third electrically controlled valve 24 can be replaced with one of a pneumatic control valve, a hydraulic control valve, and a mechanical logic valve.

[0034] It should be understood that when the filter 22 initially works on the water supply pipeline 10, the pressure difference between the two ends thereof is relatively fixed, and the pressure difference will become larger after the filter membrane in the filter 22 is attached with impurities, and thus, the pressure difference value when the filter 22 initially works is preliminarily determined, and the pressure difference value is increased by 1-2 bar to be set as the switching mode pressure difference, and when the pressure difference between the two ends exceeds the switching mode pressure difference, the normal water supply is converted into the water treatment mode of self-cleaning water supply to clean the filter 22.

[0035] It should be understood that with the continuous operation of the filter 22, the filter membrane in the filter 22 will be continuously attached with impurities, and the water supply flow will gradually decrease, and when the water supply flow cannot meet the operation requirement, the normal water supply is converted into the water treatment mode of self-cleaning water supply to clean the filter 22.

[0036] Optionally, in an embodiment, the set time is 5-10 s, and in other embodiments, the set time can be adaptively set according to the actual processing condition.

[0037] As shown in FIG. 1, Figure 1 In the embodiment, the detection control assembly includes two pressure sensors 31 arranged on the water supply pipeline 10 and located at the opposite ends of the filter assembly 20, a flow sensor 32 arranged on the water outlet end of the water supply pipeline 10, and a controller (not shown in the figure) electrically connected with the pressure sensors 31, the flow sensor 32, the first electric control valve 21, the second electric control valve 23 and the third electric control valve 24. Specifically, the two pressure sensors 31 detect the pressure values at the opposite ends of the filter assembly 20 on the water supply pipeline 10, and transmit signals to the controller, and the controller automatically calculates the pressure difference after receiving the signals to determine whether the filter 22 is blocked and whether the water treatment mode needs to be switched; the flow sensor 32 detects the water supply flow, and transmits signals to the controller, and the controller automatically calculates the water supply flow variation degree after receiving the signals to determine whether the filter 22 is blocked and whether the water treatment mode needs to be switched. Optionally, the controller is a PLC controller. It should be understood that the specific structure of the PLC controller is known to those skilled in the art, and thus, will not be described in more detail here.

[0038] Optionally, in other embodiments, the two pressure sensors 31 can be replaced by one of a pressure difference sensor, a temperature difference integrated wireless pressure transmitter.

[0039] Optionally, the controller can be remotely and wirelessly connected, so that the pressure values at the two ends of the filter assembly 20 and the water supply flow of the system can be directly obtained at the remote end, and the abnormal condition of the system can be checked in time when an abnormality occurs.

[0040] As shown in FIG. 1, Figure 1As shown in the figure, in the embodiment, the filter assembly 20 further comprises two ball valves 25 arranged on the water supply pipeline 10 and located at opposite ends of the filter 22. Specifically, the water flow through the filter assembly 20 can be manually controlled by the ball valves 25, so as to facilitate the debugging and maintenance of the water treatment self-switching system.

[0041] As shown in the figure, Figure 1 In the embodiment, the filter assembly 20 further comprises two pressure gauges 26 arranged on the water supply pipeline 10 and located at opposite ends of the filter 22. Specifically, the pressure values at the two ends of the filter 22 on the water supply pipeline 10 can be directly displayed by the two pressure gauges 26, so that when the detection control assembly fails, the manual switching of the water treatment mode can be timely performed by observing the pressure values, thereby double-protecting the water supply of the tunneling machine.

[0042] As shown in the figure, Figure 1 In the embodiment, a check valve 60 is arranged on the water inlet end of one of the filter assemblies 20. Specifically, the check valve 60 prevents backflow of water, so as to avoid damage to related components of the water treatment self-switching system caused by backflow of water.

[0043] As shown in the figure, Figure 1 In the embodiment, the water treatment self-switching system further comprises a temperature sensor 41 arranged on the water supply pipeline 10 and electrically connected to the detection control assembly. Specifically, the temperature sensor 41 detects the water temperature of the water in the water supply pipeline 10 and transmits it to the detection control assembly, so as to determine whether the water temperature meets the operation requirements of the tunneling machine, and when the water temperature does not meet the requirements, timely maintenance can be performed. Optionally, the detection control assembly is connected to an alarm device, so that when the water temperature does not meet the requirements, the alarm device sends an alarm signal to alert the operator to perform timely maintenance.

[0044] As shown in the figure, Figure 1 In the embodiment, the water treatment self-switching system further comprises a temperature table 42 arranged on the water supply pipeline 10. Specifically, the temperature table 42 directly displays the water temperature in the water supply pipeline 10, so as to directly determine whether the water temperature meets the operation requirements of the tunneling machine, and when the water temperature does not meet the requirements, timely maintenance can be performed.

[0045] As shown in the figure, Figure 1As shown, in the embodiment, the water treatment self-switching system further comprises a pressure reducing valve 51 and a safety valve 52 arranged in sequence on the water supply pipeline 10. Specifically, the water supply pressure is limited by the pressure reducing valve 51, and the safety valve 52 is used to realize double protection of the related components of the water treatment self-switching system, thereby preventing overpressure of the water body and protecting the pipeline and components. Optionally, check valves 60 are arranged on the water inlet end and the water outlet end of the water supply pipeline 10. Optionally, the pressure sensor 31 is connected with a ball valve 25. Optionally, the pressure reducing valve 51 is provided with the ball valve 25 on the front end and the rear end thereof and located on the water supply pipeline 10.

[0046] In an embodiment, the working characteristics of the water treatment self-switching system are as follows: 1) the water supply pressure is limited, the water quality is filtered, and the water supply is self-cleaned by integrating the pressure reducing valve 51, the filter 22, the safety valve 52, the pressure sensor 31, the flow sensor 32, the temperature sensor 41, and various control valves and auxiliary pipeline components, thereby realizing a water treatment device and system with high integration and high automation; 2) the automatic switching between normal water supply and self-cleaning water supply is realized by the cooperation of the two filter assemblies 20 and the detection and control assembly, and the two filter assemblies 20 are used alternately, and the water supply filtration is not affected when the water treatment mode is switched.

[0047] The tunneling machine of the embodiment comprises the above-described water treatment self-switching system. Specifically, the water treatment self-switching system is used in the tunneling machine to ensure the water quality and meet the water treatment requirements of long-term operation of the tunneling machine, thereby ensuring the tunneling efficiency, and the water treatment self-switching system is practical and suitable for wide promotion and application.

[0048] The above only describes preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water treatment self-switching system, characterized by, The water supply pipeline (10) is connected to the tunnel water inlet and the tunneling machine water inlet respectively, two filter assemblies (20) are arranged in parallel on the water supply pipeline (10) and used for connecting the sewage outlet, and a detection control assembly is arranged on the water supply pipeline (10) and electrically connected to the two filter assemblies (20), the two filter assemblies (20) are used for alternating operation to filter the water body when the water body flows in a forward direction or to deliver the water body to the sewage outlet after self-cleaning when the water body flows in a reverse direction, and the detection control assembly is used for detecting the pressure difference of the two ends of the filter assembly (20) on the water supply pipeline (10) or the water supply flow of the water supply pipeline (10) to control the water flow of the two filter assemblies (20) respectively according to the pressure difference or the water supply flow, so that normal water supply or self-cleaning water supply is realized.

2. The water treatment self-switching system according to claim 1, wherein, The filter assembly (20) comprises a first electric control valve (21), a filter (22), a second electric control valve (23), a sewage pipe and a third electric control valve (24), the first electric control valve (21), the filter (22) and the second electric control valve (23) are arranged in sequence on the water supply pipeline (10), the sewage pipe is communicated with the filter (22) and used for connecting the sewage outlet, and the third electric control valve (24) is arranged on the sewage pipe, and the detection control assembly is electrically connected to the first electric control valve (21), the second electric control valve (23) and the third electric control valve (24).

3. The water treatment self-switching system according to claim 2, wherein, The detection control assembly comprises two pressure sensors (31) arranged on the water supply pipeline (10) and located at opposite ends of the filter assembly (20), a flow sensor (32) arranged on the water outlet end of the water supply pipeline (10), and a controller electrically connected to the pressure sensor (31), the flow sensor (32), the first electric control valve (21), the second electric control valve (23) and the third electric control valve (24).

4. The water treatment self-switching system of claim 2, wherein, The filter assembly (20) further comprises two ball valves (25) arranged on the water supply pipeline (10) and located at opposite ends of the filter (22).

5. The water treatment self-switching system of claim 2, wherein, The filter assembly (20) further comprises two pressure gauges (26) arranged on the water supply pipeline (10) and located at opposite ends of the filter (22).

6. The water treatment self-switching system according to any one of claims 1-5, wherein, A check valve (60) is arranged on the water inlet end of one of the filter assemblies (20).

7. The water treatment self-switching system according to any one of claims 1-5, wherein, The water treatment self-switching system further comprises a temperature sensor (41) arranged on the water supply pipeline (10) and electrically connected to the detection control assembly.

8. The water treatment self-switching system according to any one of claims 1-5, wherein, The water treatment self-switching system further comprises a temperature gauge (42) arranged on the water supply pipeline (10).

9. The water treatment self-switching system according to any one of claims 1-5, wherein, The water treatment self-switching system further comprises a pressure reducing valve (51) and a safety valve (52) arranged in sequence on the water supply pipeline (10).

10. A heading machine characterized by The water treatment self-switching system comprises any one of claims 1-9. The water treatment self-switching system comprises any one of claims 1-9.

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