Automatic alarm and unblocking device for filters

Abstract

The utility model discloses an automatic alarm and unblocking device for filter, including filter body, the filter body includes the filter part, the receiving part and the liquid inlet part who sets gradually from left to right, the inside installation of filter part has the filter screen frame, the inboard fixed mounting of filter screen frame has the filter screen, the inside fixed mounting of liquid inlet part has the unblocking component, the top fixed mounting of receiving part has the electric push rod, the telescopic end of electric push rod penetrates to the inside fixed coupling of receiving part and is installed to the lifting seat, the left side fixed mounting of lifting seat has the cleaning brush for the filter screen unblocking. The utility model discloses through setting flow velocity sensor and controller, can monitor the filter flow rate in real time, when the flow rate is lower than the set threshold value, and the controller automatic trigger alarm sound and light alarm, remind staff to pay attention to filter state, solved the traditional filter block monitoring lag problem, realized the automatic early warning of blocking.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an automatic alarm and unclogging device for filters. Background Technology

[0002] Filters are indispensable equipment in industrial production and water treatment. They use filter screens to intercept impurities in liquids, thereby purifying and refining them.

[0003] Traditional filters often present several problems during use: First, the filter screen is easily clogged by impurities, leading to a decrease in filtration flow rate. However, it is difficult for operators to detect the clogging in real time, often only discovering it when the system pressure becomes abnormal or the liquid output decreases significantly. By then, production efficiency has been affected, and equipment damage may even occur. Second, once the filter screen is clogged, the machine must be stopped to disassemble the filter for manual cleaning or replacement. This not only increases the labor intensity of operators but also causes production interruptions, especially in continuous production scenarios where downtime losses are substantial. In addition, some industries' liquids contain viscous impurities or large particles, which, in addition to clogging the filter screen, tend to accumulate in the inlet pipe, causing poor liquid flow. Traditional filters lack a dedicated unclogging structure for the inlet channel, requiring additional unclogging operations. To address these issues, we propose an automatic alarm and unclogging device for filters to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide an automatic alarm and unclogging device for filters to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic alarm and unclogging device for a filter, comprising a filter body, the filter body including a filter section, a receiving section, and a liquid inlet section arranged sequentially from left to right; a filter screen frame installed inside the filter section, a filter screen fixedly installed on the inner side of the filter screen frame; an unclogging component fixedly installed inside the liquid inlet section; an electric push rod fixedly installed on the top of the receiving section; a lifting seat fixedly connected to the telescopic end of the electric push rod extending through the receiving section; a cleaning brush for unclogging the filter screen fixedly installed on the left side of the lifting seat; a pressure roller for driving the unclogging component fixedly installed on the right side of the lifting seat; a flow rate sensor installed in the drain pipe connected to the left side of the filter section; and an alarm and a controller respectively installed on the top of the filter section.

[0006] Furthermore, the unblocking assembly includes a sleeve, the mounting base at the bottom of the sleeve is fixedly connected to the bottom of the inner wall of the liquid inlet, an annular pressure plate is fixedly connected to the right side of the inner wall of the sleeve by a thrust spring, a crossbar is fixedly connected to the inner surface of the annular pressure plate, the left end of the crossbar extends through to the outside of the sleeve and is fixedly connected to a semi-circular block, the right end of the crossbar extends through the sleeve and into the liquid inlet pipe on the right side of the liquid inlet and is fixedly connected to an unblocking push plate, and the unblocking push plate has a through liquid inlet.

[0007] Furthermore, a pad is fixedly installed on the top of the inner wall of the filter section, and studs are symmetrically installed on the right side of the pad. The filter screen frame is inserted into the two studs, and a locking nut is threaded onto the right side of the stud corresponding to the filter screen frame.

[0008] Furthermore, the right end of the sleeve is tapered and is fixedly connected to the left side with a first sealing ring. The surface of the crossbar is in contact with the inner side of the first sealing ring. The arc surface of the semicircular block is provided with a wheel groove that matches the pressure roller.

[0009] Furthermore, a second sealing ring is fixedly connected to the top of the inner wall of the receiving part at the position corresponding to the telescopic end of the electric push rod, and the inner side of the second sealing ring is in contact with the surface of the telescopic end of the electric push rod.

[0010] Furthermore, an annular connecting plate is fixedly installed on the outer surface of the connection between the filter section, the receiving section and the liquid inlet section, and splicing holes are provided at the four corners of the annular connecting plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting a flow rate sensor and a controller, can monitor the filter flow rate in real time. When the flow rate is lower than the set threshold, the controller automatically triggers an audible and visual alarm to remind staff to pay attention to the filter status, thus solving the problem of lagging monitoring of traditional filter blockage and realizing automatic early warning of blockage.

[0012] 2. This utility model uses an electric push rod to drive the lifting seat to rise and fall, which in turn drives the left cleaning brush to scrape the filter screen up and down, thus achieving automatic unclogging of the filter screen. This eliminates the need for manual cleaning during machine downtime, reduces production interruption time, and lowers the labor intensity of workers. At the same time, the pressure roller on the right side of the lifting seat presses down on the semi-circular block, pushing the crossbar and the unclogging push plate to move left and right, scraping away impurities on the inner wall of the liquid inlet pipe, thus achieving automatic unclogging of the liquid inlet channel. This bidirectional unclogging ensures smooth operation of the filtration system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the filter section of this utility model; Figure 3This is a cross-sectional view of the receiving part of this utility model; Figure 4 This is a cross-sectional view of the liquid inlet section of this utility model; Figure 5 This is a schematic diagram of the unblocking component of this utility model.

[0014] In the diagram: 1. Filter body; 101. Filter section; 102. Receiving section; 103. Liquid inlet section; 2. Filter screen frame; 3. Unclogging assembly; 301. Sleeve; 302. Thrust spring; 303. Annular pressure plate; 304. Crossbar; 305. Semicircular block; 306. Unclogging push plate; 307. Liquid inlet; 308. First sealing ring; 309. Wheel groove; 4. Electric push rod; 5. Lifting seat; 6. Cleaning brush; 7. Pressure roller; 8. Flow rate sensor; 9. Alarm; 10. Controller; 11. Pad; 12. Stud; 13. Second sealing ring; 14. Annular connecting plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 An automatic alarm and unclogging device for a filter includes a filter body 1. The filter body 1 includes a filter section 101, a receiving section 102, and a liquid inlet section 103 arranged sequentially from left to right. All three are rectangular structures and made of stainless steel. A drain pipe is connected to the left side of the filter section 101 for discharging the filtered liquid. The inner diameter of the receiving section 102 is the same as that of the filter section 101 and the liquid inlet section 103. It is used to install a drive component and connect the filter section 101 and the liquid inlet section 102. A liquid inlet pipe is connected to the right side of the liquid inlet section 103 for introducing the liquid to be filtered. An annular connecting plate 14 is welded and fixed to the outer surface of the connection of the three parts. The annular connecting plate 14 is made of stainless steel and has splicing holes at the four corners. High-strength bolts are passed through the splicing holes to achieve sealing and fixing of the three parts. Fluororubber sealing gaskets are added to the connection to ensure no liquid leakage.

[0017] The filter unit 101 is equipped with a filter screen frame 2. The filter screen frame 2 is a rectangular frame structure, made of carbon steel and welded together. Its outer diameter is adapted to the inner diameter of the filter unit 101. A pad 11 is welded and fixed to the top of the inner wall of the filter unit 101. The pad 11 is a rectangular steel plate with weight reduction holes on its surface. Two studs 12 are symmetrically welded to the right side of the pad 11. The top of the filter screen frame 2 has through holes that fit the studs 12 and is inserted into the two studs 12. Locking nuts are threaded onto the surface of the studs 12 corresponding to the right side of the filter screen frame 2. The filter screen frame 2 is fixed by tightening the locking nuts, which facilitates disassembly and replacement. The filter screen is fixed to the inside of the filter screen frame 2 by bolts. The filter screen is made of stainless steel woven mesh and can be flexibly replaced according to the filtration accuracy requirements.

[0018] An electric push rod 4 is fixedly installed on the top of the receiving part 102 by bolts. The electric push rod 4 is a DTZ300 ball screw electric push rod. A second sealing ring 13 is fixedly connected to the top of the inner wall of the receiving part 102 at the position corresponding to the telescopic end of the electric push rod 4. The second sealing ring 13 is made of fluororubber and its inner side is in close contact with the surface of the telescopic end of the electric push rod 4 to prevent liquid leakage from the telescopic end. The telescopic end of the electric push rod 4 passes through the inside of the receiving part 102 and is welded and fixed to a lifting seat 5. The lifting seat 5 is a rectangular steel plate with rust prevention treatment. A cleaning brush 6 is fixedly installed on the left side of the lifting seat 5. The bristles of the cleaning brush 6 are made of nylon and are in close contact with the surface of the filter screen to ensure that impurities on the filter screen can be effectively scraped off during cleaning. A pressure roller 7 is installed on the right side of the lifting seat 5.

[0019] A blockage-clearing component 3 is fixedly installed inside the liquid inlet section 103. The blockage-clearing component 3 includes a sleeve 301, which is made of stainless steel. The mounting base at the bottom is fixedly connected to the bottom of the inner wall of the liquid inlet section 103. An annular pressure plate 303 is fixedly connected to the right side of the inner wall of the sleeve 301 via a thrust spring 302. The thrust spring provides continuous reset force. The annular pressure plate 303 is made of stainless steel, and its outer diameter is adapted to the inner diameter of the sleeve 301. A crossbar 304 is welded and fixed to the inner surface of the annular pressure plate 303. The crossbar 304 is a stainless steel round bar. The left end of the crossbar 304 extends through to the outside of the sleeve 301 and is welded and fixed to a semi-circular block 305. A groove 309 adapted to the pressure roller 7 is opened on the arc surface of the semi-circular block 305. The arc of the groove 309 is the same as the arc of the outer circle of the pressure roller 7. To ensure a tight fit when the pressure roller 7 is pressed, the right end of the crossbar 304 passes through the sleeve 301 and extends into the liquid inlet pipe on the right side of the liquid inlet section 103, where a cleaning push plate 306 is welded and fixed. The cleaning push plate 306 is a circular steel plate with a diameter that matches the inner diameter of the liquid inlet pipe. Multiple through-holes 307 are opened on its surface. The through-holes 307 ensure normal liquid inlet and can scrape away impurities on the inner wall of the liquid inlet pipe when the push plate moves. The right end of the sleeve 301 has a tapered design, and both the left and right ends of the sleeve 301 are fixedly connected to a first sealing ring 308. The first sealing ring 308 is made of fluororubber and its inner diameter matches the diameter of the crossbar 304. The surface of the crossbar 304 is in contact with the inner side of the first sealing ring 308 to achieve a seal and prevent liquid from entering the sleeve 301 and affecting the spring performance.

[0020] A flow rate sensor 8 is fixedly installed in the drain pipe connected to the left side of the filter section 101 via a flange. The flow rate sensor 8 is an electromagnetic flow rate sensor, which can monitor the flow rate of the filtered liquid in real time and transmit the flow rate signal to the controller 10. An alarm 9 and a controller 10 are also fixedly installed on the top of the filter section 101 via brackets. The alarm 9 is an audible and visual alarm that can emit a clear alarm signal when the flow rate is low or when there is blockage. The controller 10 is a PLC controller, model S7-200SMART, with built-in control program. It is electrically connected to the flow rate sensor 8, the alarm 9, and the electric push rod 4 via wires. It can receive the signal from the flow rate sensor 8, determine the degree of blockage, and trigger the alarm and unblocking actions.

[0021] During use, when impurities accumulate on the filter screen surface, causing blockage, the filtration flow rate decreases. The flow rate sensor 8 transmits the detected flow rate signal to the controller 10. When the flow rate falls below a set threshold, the controller 10 triggers the alarm 9 to issue an audible and visual alarm, alerting the operator that the filter is clogged. Simultaneously, the controller 10 activates the electric push rod 4, controlling its telescopic end to extend downwards, causing the lifting seat 5 to descend. The cleaning brush 6 on the left side of the lifting seat 5 moves downwards in sync, scraping away impurities on the filter screen surface and removing those clogging the mesh. The impurities flow with the liquid or settle at the bottom of the filter section 101, on the right side of the lifting seat 5. When the pressure roller 7 moves downward, it presses the groove 309 of the semicircular block 305, pushing the semicircular block 305 to the left. The crossbar 304 drives the cleaning push plate 306 to slide to the left, scraping away the impurities accumulated on the inner wall of the inlet pipe. The thrust spring 302 is compressed, and the telescopic end of the electric push rod 4 retracts upward, driving the lifting seat 5 to rise. The cleaning brush 6 scrapes the filter screen upward to further clean the impurities. At the same time, the thrust spring 302 releases elastic potential energy, pushing the annular pressure plate 303 to the right. The crossbar 304 drives the semicircular block 305 and the cleaning push plate 306 to reset. When the cleaning push plate 306 slides to the right, it scrapes away the impurities on the inner wall of the inlet pipe again.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic alarm and declogging device for a filter, comprising a filter body (1), characterized in that: The filter body (1) includes a filter section (101), a receiving section (102), and a liquid inlet section (103) arranged sequentially from left to right. A filter screen frame (2) is installed inside the filter section (101), and a filter screen is fixedly installed on the inner side of the filter screen frame (2). A blockage removal component (3) is fixedly installed inside the liquid inlet section (103). An electric push rod (4) is fixedly installed on the top of the receiving section (102). The telescopic end of the electric push rod (4) passes through the receiving section (102) and is fixedly connected to a lifting seat (5). A cleaning brush (6) for unclogging the filter screen is fixedly installed on the left side of the lifting seat (5). A pressure roller (7) for driving the blockage removal component (3) is fixedly installed on the right side of the lifting seat (5). A flow rate sensor (8) is installed in the drain pipe connected to the left side of the filter section (101). An alarm (9) and a controller (10) are also installed on the top of the filter section (101).

2. The automatic alarm and declogging device for a filter according to claim 1, characterized in that: The unblocking component (3) includes a sleeve (301). The mounting base at the bottom of the sleeve (301) is fixedly connected to the bottom of the inner wall of the liquid inlet (103). An annular pressure plate (303) is fixedly connected to the right side of the inner wall of the sleeve (301) via a thrust spring (302). A crossbar (304) is fixedly connected to the inner surface of the annular pressure plate (303). The left end of the crossbar (304) extends through to the outside of the sleeve (301) and is fixedly connected to a semi-circular block (305). The right end of the crossbar (304) extends through the sleeve (301) and into the liquid inlet pipe on the right side of the liquid inlet (103) and is fixedly connected to an unblocking push plate (306). A through liquid inlet (307) is provided on the unblocking push plate (306).

3. The automatic alarm and declogging device for a filter according to claim 2, characterized in that: A pad (11) is fixedly installed on the top of the inner wall of the filter section (101). Studs (12) are symmetrically installed on the right side of the pad (11). The filter screen frame (2) is inserted into the two studs (12). A locking nut is threaded on the right side of the filter screen frame (2) corresponding to the surface of the studs (12).

4. The automatic alarm and declogging device for a filter according to claim 3, characterized in that: The right end of the sleeve (301) is tapered and is fixedly connected to the left side with a first sealing ring (308). The surface of the crossbar (304) is in contact with the inner side of the first sealing ring (308). The arc surface of the semicircular block (305) is provided with a wheel groove (309) that is compatible with the pressure roller (7).

5. The automatic alarm and declogging device for a filter according to claim 4, characterized in that: The top of the inner wall of the receiving part (102) is fixedly connected to the position of the telescopic end of the electric push rod (4), and the inner side of the second sealing ring (13) is in contact with the surface of the telescopic end of the electric push rod (4).

6. The automatic alarm and declogging device for a filter according to claim 5, characterized in that: An annular connecting plate (14) is fixedly installed on the outer surface of the connection between the filter section (101), the receiving section (102) and the liquid inlet section (103), and splicing holes are provided at the four corners of the annular connecting plate (14).

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