High-voltage pulse backwashing liquid sending system for automatic liquid filter

Abstract

The utility model relates to a high-pressure pulse backwashing liquid sending system for an automatic liquid filter, which comprises an energy storage sending tank, and the bottom of the energy storage sending tank is respectively provided with a low-pressure backwashing liquid filling port, a high-pressure backwashing liquid filling port and a high-pressure backwashing liquid pulse sending port. A pressure transmitter opening, a pressure gauge opening, a high-pressure air supply opening and an emptying opening are formed in the top of the pressure sensor; the low-pressure backwashing liquid filling port is connected with a low-pressure washing liquid supply device, the high-pressure backwashing liquid filling port is connected with a high-pressure washing liquid supply device, the high-pressure air supply port is connected with a compressed air supply device, and a pressure transmitter and a pressure gauge are respectively arranged on the pressure transmitter port and the pressure gauge port. The system can meet instantaneous high-pressure and instantaneous large-flow backwashing liquid pulse conveying requirements, can stably and reliably run on line efficiently for a long time, remarkably reduces the production process cost, realizes long-term stability and maintenance-free, and greatly reduces the maintenance cost as well as the time and frequency of shutdown overhaul and maintenance, thereby remarkably improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid filter technical field especially is a kind of high-pressure pulse backwash liquid sending system for automatic liquid filter. BACKGROUND

[0002] In industrial production, industrial wastewater containing a large amount of suspended solids is often generated, and the suspended solids in the wastewater need to be filtered out by a liquid filter before the wastewater can be recycled or discharged in accordance with environmental protection standards.

[0003] A liquid filter generally includes different types of filtering elements, such as filter cloth, filter screen, and wedge-shaped filter, inside the liquid filter. During use of such a liquid filter, the filtering elements need to be backwashed to ensure that the filter is in a long-term high-efficiency filtering state. At present, a pump backwash liquid system with stable flow rate is often used for backwashing, which is difficult to meet the requirements of instantaneous high pressure and instantaneous large flow rate for backwash liquid delivery. Therefore, the backwashing effect is not satisfactory, and it is difficult to ensure that the related solid-liquid separation equipment works stably and efficiently for a long time. The equipment needs to be frequently disassembled, cleaned, maintained, and replaced with new filtering elements, which not only consumes a large amount of equipment maintenance cost, but also causes frequent maintenance of the production line, seriously reducing the production efficiency of the entire line. SUMMARY

[0004] Therefore, the utility model wants to overcome the problem in the prior art that a pump backwash liquid system with stable flow rate is often used for backwashing, which is difficult to meet the requirements of instantaneous high pressure and instantaneous large flow rate for backwash liquid delivery. Therefore, the backwashing effect is not satisfactory, and it is difficult to ensure that the related solid-liquid separation equipment works stably and efficiently for a long time. The equipment needs to be frequently disassembled, cleaned, maintained, and replaced with new filtering elements, which not only consumes a large amount of equipment maintenance cost, but also causes frequent maintenance of the production line, seriously reducing the production efficiency of the entire line.

[0005] To solve the above technical problems, the utility model provides a high-pressure pulse backwash liquid sending system for an automatic liquid filter, comprising,

[0006] An energy storage sending tank, the energy storage sending tank comprises a tank body, a low-pressure backwash liquid filling port, a high-pressure backwash liquid filling port, and a high-pressure backwash liquid pulse sending port are formed in the bottom of the tank body, and a pressure transmitter port, a pressure gauge port, a high-pressure air charging port, and a vent port are formed in the top of the tank body;

[0007] A low-pressure flushing liquid supply device, the low-pressure flushing liquid supply device is connected to the low-pressure backwash liquid filling port;

[0008] A high-pressure rinse liquid supply device is connected to the high-pressure backwash liquid filling port;

[0009] A compressed air supply device is connected to the high-pressure air supplement port;

[0010] A pressure transmitter is arranged on the pressure transmitter port;

[0011] A pressure gauge is arranged on the pressure gauge port.

[0012] In an embodiment of the utility model, the side of the tank is provided with high liquid level switch port and low liquid level switch port which are arranged in vertical direction, the high liquid level switch port is above the low liquid level switch port, and high liquid level switch and low liquid level switch are arranged on the high liquid level switch port and low liquid level switch port respectively.

[0013] In an embodiment of the utility model, overflow port which is at the same horizontal height with the high liquid level switch port is further arranged on the side of the tank, and backwash liquid storage tank is connected to the overflow port through pipeline.

[0014] In an embodiment of the utility model, the electromagnetic valve is arranged on the low-pressure backwash liquid filling port, high-pressure backwash liquid filling port, high-pressure backwash liquid pulse sending port, high-pressure air supplement port and overflow port.

[0015] In an embodiment of the utility model, the controller and alarm are further arranged, and the controller is connected to the high liquid level switch, low liquid level switch, alarm and electromagnetic valve.

[0016] In an embodiment of the utility model, the top of the tank is further provided with safety valve port, and safety valve is arranged on the safety valve port.

[0017] In an embodiment of the utility model, the bottom of the tank is further provided with blowdown port, and ball valve is arranged on the blowdown port.

[0018] In an embodiment of the utility model, the blowdown port is connected to dirt collecting device.

[0019] In an embodiment of the utility model, the blowoff port is provided with stop valve.

[0020] In an embodiment of the utility model, the bottom of the tank is further provided with multiple supporting legs, and the supporting leg comprises supporting column which is vertically welded to the tank and supporting plate which is horizontally connected to the bottom of the supporting column.

[0021] The above technical scheme of the utility model has the following advantages compared with prior art:

[0022] The utility model discloses a high pressure pulse backwash liquid sending system for automatic liquid filter uses, including energy storage sending jar, low pressure flush liquid supply device, high pressure flush liquid supply device, compressed air supply device, pressure transmitter and pressure gauge etc., and the bottom of energy storage sending jar is opened low pressure backwash liquid filling port, high pressure backwash liquid filling port and high pressure backwash liquid pulse sending port respectively, and the top of jar body is opened pressure transmitter port, pressure gauge port, high pressure air air supplement port and vent respectively, low pressure flush liquid supply device is connected low pressure backwash liquid filling port, high pressure flush liquid supply device is connected high pressure backwash liquid filling port, compressed air supply device is connected high pressure air air supplement port, and pressure transmitter sets up on pressure transmitter port, and pressure gauge installs on pressure gauge port. This high pressure pulse backwash liquid sending system can satisfy the backwash liquid pulse delivery requirement of instantaneous high pressure and instantaneous large flow, thereby greatly improving the backwash efficiency of various liquid filters, avoiding that the filter element is blocked due to poor backwash and significantly reducing the filtering efficiency, thereby ensuring that it can be long-term stable and reliable on-line high efficiency operation, thereby greatly improving the filtering process efficiency, significantly saving its production process cost, and realizing long-term stable maintenance free, greatly reducing the artificial maintenance cost, reducing the time and frequency of shutdown dismounting maintenance, thereby significantly improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the content of the utility model more easily be clearly understood, the following is according to the specific embodiment of the utility model and combines the attached drawing, and the utility model is further detailed, wherein

[0024] Figure 1 It is the whole structure schematic diagram of the high pressure pulse backwash liquid sending system for automatic liquid filter use of the preferred embodiment of the utility model;

[0025] Figure 2 It is the whole structure schematic diagram of the jar body of the high pressure pulse backwash liquid sending system for automatic liquid filter use of the preferred embodiment of the utility model;

[0026] Figure 3 It is the jar body plan view of the high pressure pulse backwash liquid sending system for automatic liquid filter use of the preferred embodiment of the utility model.

[0027] The description of the drawings is as follows: 1, energy storage sending tank; 11, tank body; 111, low-pressure backwash liquid filling port; 112, high-pressure backwash liquid filling port; 113, high-pressure backwash liquid pulse sending port; 114, pressure transmitter port; 115, pressure gauge port; 116, high-pressure air charging port; 117, vent port; 118, high liquid level switch port; 119, low liquid level switch port; 1110, overflow port; 1111, safety valve port; 1112, blowdown port; 12, support leg; 2, low-pressure flushing liquid supply device; 3, high-pressure flushing liquid supply device; 4, compressed air supply device; 5, pressure transmitter; 6, pressure gauge; 7, high liquid level switch; 8, low liquid level switch; 9, safety valve; A, filter; B, backwash liquid storage tank. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0029] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses a high-pressure pulse backwash liquid sending system for automatic liquid filter, comprising,

[0030] Energy storage sending tank 1, energy storage sending tank 1 includes tank body 11, and the bottom of tank body 11 is provided with low-pressure backwash liquid filling port 111, high-pressure backwash liquid filling port 112 and high-pressure backwash liquid pulse sending port 113 respectively, and the top of tank body 11 is provided with pressure transmitter port 114, pressure gauge port 115, high-pressure air charging port 116 and vent port 117 respectively;

[0031] Low-pressure flushing liquid supply device 2, low-pressure flushing liquid supply device 2 is connected with low-pressure backwash liquid filling port 111;

[0032] High-pressure flushing liquid supply device 3, high-pressure flushing liquid supply device 3 is connected with high-pressure backwash liquid filling port 112;

[0033] Compressed air supply device 4, compressed air supply device 4 is connected with high-pressure air charging port 116;

[0034] Pressure transmitter 5, pressure transmitter 5 is arranged on pressure transmitter port 114;

[0035] Pressure gauge 6, pressure gauge 6 is installed on pressure gauge port 115.

[0036] Specifically, the working process of the high-pressure pulse backwash liquid sending system of the utility model comprises:

[0037] Car preparation process: set the safety valve 9 and instrument control system, open the vent 117 and overflow 1110 and close the low pressure backwash liquid filling port 111, high pressure backwash liquid filling port 112, high pressure backwash liquid pulse sending port 113 and high pressure air charging port 116.

[0038] Start filling: open the low pressure backwash liquid filling port 111 to fill the low pressure backwash liquid into the tank body 11 of the energy storage sending tank 1, the liquid level of the low pressure backwash liquid in the tank body 11 rises until the high liquid level switch 7 starts to alarm (at the same time the overflow 1110 starts to overflow), at this time the low pressure backwash liquid filling port 111 should be closed, stop inputting low pressure backwash liquid into the tank body 11, when the overflow 1110 stops overflowing, the alarm is closed, the liquid level of the low pressure backwash liquid reaches the highest control liquid level, then close the overflow 1110 and the vent 117 to realize the initial sealing of the equipment.

[0039] Start filling: open the low pressure backwash liquid filling port 111 to fill the low pressure backwash liquid into the tank body 11 of the energy storage sending tank 1, the liquid level of the low pressure backwash liquid in the tank body 11 rises until the high liquid level switch 7 starts to alarm (at the same time the overflow 1110 starts to overflow), at this time the low pressure backwash liquid filling port 111 should be closed, stop inputting low pressure backwash liquid into the tank body 11, when the overflow 1110 stops overflowing, the alarm is closed, the liquid level of the low pressure backwash liquid reaches the highest control liquid level, then close the overflow 1110 and the vent 117 to realize the initial sealing of the equipment.

[0040] Backwash liquid pulse sending: open the high pressure backwash liquid pulse sending port 113 to send backwash liquid to the filter A of the solid-liquid separator with instantaneous high pressure and large flow at regular intervals, when the set pulse sending time is reached, close the high pressure backwash liquid pulse sending port 113, and in order to improve the effect of pulse backwash, multiple short pulse sending of instantaneous high pressure and large flow backwash liquid can be performed, the number of backwash liquid pulses sent in each backwash cycle is set according to the optimal process parameters determined by process experiment and is automatically controlled by the controller. However, it should be noted that the number of backwash liquid pulses sent in each backwash cycle must ensure that the lowest control liquid level alarm of the energy storage sending tank 1 is not triggered, and after the completion of the current backwash cycle, the high pressure backwash liquid pulse sending port 113 must be closed to create necessary conditions for subsequent high pressure backwash liquid supplement for the energy storage sending tank 1.

[0041] After one round of backwashing cycle is completed, the high-pressure backwashing liquid filling port 112 is opened to supplement the backwashing liquid in the tank body 11 with high pressure to restore it to the original highest control liquid level (in this process, the energy storage and transmission tank 1 is in a closed energy storage state). During the liquid supplementing process, the compressed air in the air cavity at the top of the tank body 11 will be compressed by the rising high-pressure backwashing liquid level in the liquid cavity at the bottom, so that the pulse transmission pressure value of the reduced air pressure returns to the original set highest pressure value. And in the high-pressure liquid supplementing link, only when the compressed air at the upper part of the energy storage and transmission tank 1 has accumulated leakage after a long-term and multiple liquid supplementing and energy storage compression and pressurization cycles and the rated working pressure has dropped significantly, the high-pressure air supplement port 116 will be temporarily reopened for air supplementing, and then immediately closed again after the air supplementing is completed, so that the device enters the energy storage working cycle again. When the compressed air at the upper part of the energy storage and transmission tank 1 does not need to be supplemented, the device automatically enters the energy storage working cycle for unlimited times, and only the high-pressure backwashing liquid pulse transmission port 113 needs to be opened for multiple pulse transmission of backwashing liquid, and then the high-pressure backwashing liquid filling port 112 is opened again for high-pressure liquid supplementing after the transmission is completed. Such an endless cycle can realize the repeated transmission of backwashing liquid with instantaneous high pressure and large flow, and achieve the best backwashing effect.

[0042] The high-pressure pulse backwashing liquid transmission system for automatic liquid filters can meet the requirements of instantaneous high pressure and instantaneous large flow pulse backwashing liquid transmission for various liquid filters (especially various automatic liquid filters), can be stably and reliably operated online with high efficiency for a long time, thereby greatly improving the long-term online filtering process efficiency, stability and reliability of the liquid filter, significantly saving the production process cost, realizing long-term stable maintenance-free, greatly reducing the artificial maintenance cost, reducing the time and frequency of shutdown and maintenance, and thereby significantly improving the production efficiency.

[0043] Further, high liquid level switch ports 118 and low liquid level switch ports 119 are arranged on the side surface of the tank body 11 in a vertical direction, the high liquid level switch ports 118 are located above the low liquid level switch ports 119, and high liquid level switches 7 and low liquid level switches 8 are arranged on the high liquid level switch ports 118 and the low liquid level switch ports 119 respectively. Preferably, the high liquid level switches 7 and the low liquid level switches 8 can be selected from tuning fork liquid level switches or other types of liquid level switches.

[0044] Further, an overflow port 1110 at the same horizontal height as the high liquid level switch port 118 is formed on the side surface of the tank body 11, and the overflow port 1110 is connected with a backwashing liquid storage tank B through a pipeline. Specifically, when the backwashing liquid in the tank body 11 rises to the highest control liquid level, the backwashing liquid will flow out from the overflow port 1110, so as to ensure that the liquid surface of the backwashing liquid in the tank body 11 will not be higher than the highest control liquid level.

[0045] Further, the high-pressure pulse backwash liquid sending system comprises a plurality of electromagnetic valves, which are respectively arranged on the low-pressure backwash liquid filling port 111, the high-pressure backwash liquid filling port 112, the high-pressure backwash liquid pulse sending port 113, the high-pressure air supplementing port 116 and the overflow port 1110.

[0046] Further, the high-pressure pulse backwash liquid sending system further comprises a controller and an alarm, and the controller is connected with the high liquid level switch 7, the low liquid level switch 8, the alarm and the electromagnetic valves. Specifically, the controller can automatically control the components, so as to realize the automatic control of the high-pressure pulse backwash liquid sending system. Preferably, the controller can be a PLC controller, or other types of automatic controllers, such as a single-chip microcomputer, an industrial computer, a DCS control system, etc.

[0047] Further, the top of the tank body 11 is provided with a safety valve port 1111, and a safety valve 9 is arranged on the safety valve port 1111. When the pressure in the tank body 11 exceeds a predetermined safety pressure value, the safety valve 9 can be used for pressure relief, so as to ensure the safety of the equipment.

[0048] Further, the bottom of the tank body 11 is provided with a blowdown port 1112, and a ball valve is arranged on the blowdown port 1112. The blowdown port is used for the regular maintenance of the equipment.

[0049] Further, the blowdown port 1112 is connected with a dirt collecting device.

[0050] Further, a stop valve is arranged on the vent port 117. The vent port is used for the start-up filling and maintenance emptying of the equipment, and is respectively used for preventing the back pressure in the tank body from hindering the filling or the vacuum from causing the tank body to be pulled flat.

[0051] Further, the bottom of the tank body 11 is provided with a plurality of legs 12, and each of the legs 12 comprises a support column which is vertically welded to the tank body 11 and a support plate which is horizontally connected to the bottom of the support column.

[0052] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A high-pressure pulse backwash liquid delivery system for use in automatic liquid filters, characterized in that: include, An energy storage and transmission tank includes a tank body. The bottom of the tank body is provided with a low-pressure backwash liquid filling port, a high-pressure backwash liquid filling port, and a high-pressure backwash liquid pulse transmission port. The top of the tank body is provided with a pressure transmitter port, a pressure gauge port, a high-pressure air supply port, and a vent port. A low-pressure flushing fluid supply device, wherein the low-pressure flushing fluid supply device is connected to the low-pressure backwash fluid filling port; A high-pressure flushing fluid supply device, wherein the high-pressure flushing fluid supply device is connected to the high-pressure backwash fluid filling port; A compressed air supply device, wherein the compressed air supply device is connected to the high-pressure air inlet; A pressure transmitter, wherein the pressure transmitter is disposed at the pressure transmitter port; A pressure gauge, wherein the pressure gauge is installed on the pressure gauge port.

2. The high-pressure pulse backwash liquid delivery system for use in automatic liquid filters according to claim 1, characterized in that: The side of the tank is provided with high liquid level switch ports and low liquid level switch ports arranged vertically at intervals. The high liquid level switch ports are located above the low liquid level switch ports, and high liquid level switches and low liquid level switches are respectively provided on the high liquid level switch ports and low liquid level switch ports.

3. The high-pressure pulse backwash liquid delivery system for use in automatic liquid filters according to claim 2, characterized in that: An overflow port, which is at the same level as the high liquid level switch, is also provided on the side of the tank. The overflow port is connected to a backwash liquid storage tank through a pipeline.

4. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 3, characterized in that: The system includes multiple solenoid valves, which are respectively located at the low-pressure backwash fluid filling port, the high-pressure backwash fluid filling port, the high-pressure backwash fluid pulse sending port, the high-pressure air replenishment port, and the overflow port.

5. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 4, characterized in that: It also includes a controller and an alarm, wherein the controller is connected to the high level switch, the low level switch, the alarm and each solenoid valve respectively.

6. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 1, characterized in that: The top of the tank is also provided with a safety valve port, and a safety valve is installed on the safety valve port.

7. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 1, characterized in that: The bottom of the tank is also provided with a drain outlet, and a ball valve is installed on the drain outlet.

8. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 7, characterized in that: The sewage outlet is connected to a sewage collection device.

9. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 1, characterized in that: A shut-off valve is installed on the vent.

10. The high-pressure pulse backwash liquid delivery system for use in an automatic liquid filter according to claim 1, characterized in that: The bottom of the tank is also provided with multiple support legs, each of which includes a support column vertically welded to the tank and a support plate horizontally connected to the bottom of the support column.

Images