Butterfly valve for controlling continuous flow

Abstract

The invention discloses a butterfly valve capable of controlling continuous flow and relates to the technical field of butterfly valves, the butterfly valve comprises a butterfly valve body and a water pipe, a valve rod is rotatably connected to the butterfly valve body in a penetrating mode, a valve clack is fixedly connected to the outer surface of the lower end of the valve rod and movably connected to the interior of the butterfly valve body, and the water pipe is arranged on the left side of the butterfly valve body; the device further comprises a filtering and intercepting mechanism, an abnormity early warning mechanism and an auxiliary sewage discharging mechanism, through the arrangement of the filtering and intercepting mechanism, the abnormity early warning mechanism and the auxiliary sewage discharging mechanism, the centrifugal effect of a centrifugal plate is utilized, and whether a first contact is in contact with a second contact or not is matched, so that when the water flow speed is decreased and lower than the conventional flow speed range, the water flow can be discharged; the sealing cover plate is moved away from the blow-off pipe, so that filtered sewage doped with a large number of impurity particles can be discharged through the blow-off pipe, the situation that too many impurities are accumulated in the position between the connector and the water pipe is effectively prevented, and equipment abrasion and the failure rate caused by long-term overload operation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valves, and more particularly to a butterfly valve for controlling continuous flow. Background Art

[0002] In the prior art, a butterfly valve, also known as a flap valve or a butterfly-shaped valve, is a simple-structured regulating valve. When controlling continuous flow, the rotational angle of the valve stem can be adjusted through manual, electric or pneumatic devices, so as to accurately control the opening degree of the fluid passage and achieve the purpose of continuously regulating the flow rate; In the application of existing butterfly valves, they are usually connected to water pipes to introduce water flow. However, these water flows often contain a large amount of impurity particles. Prolonged use will cause these impurity particles to continuously impact and rub the valve flap of the butterfly valve. This continuous wear will not only reduce the sealing performance of the valve flap, but also cause deformation or damage of the valve flap, thus affecting the normal opening and closing operation of the butterfly valve, exacerbating water leakage, reducing the efficiency of the fluid control system, and even leading to the failure of the entire system. Most existing butterfly valves lack an automated monitoring and sewage discharge mechanism and cannot monitor the water flow velocity in real time, so it is inconvenient to understand the accumulation of impurities, and thus it is impossible to automatically adjust the sewage discharge strategy according to the monitoring results. This results in the butterfly valve being unable to respond in a timely manner when facing abnormal situations such as a decrease in flow velocity, and thus it is impossible to effectively prevent equipment failures and performance degradation caused by the accumulation of impurities. Moreover, in traditional water treatment systems, in order to remove the accumulated impurities, it is usually necessary to manually check and clean the connecting pipes of the butterfly valve regularly. This manual intervention is not only frequent and inefficient, increasing the maintenance cost, but also poses safety hazards, such as equipment damage or personal injury caused by improper operation.

[0003] Therefore, in view of this, the present invention proposes a butterfly valve for controlling continuous flow to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a butterfly valve for controlling continuous flow to solve the corresponding technical problems raised in the above background art.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A butterfly valve for controlling continuous flow, including a butterfly valve body and a water pipe, a valve stem is rotatably connected through the butterfly valve body, a valve flap is fixedly connected to the outer surface of the lower end of the valve stem, and the valve flap is movably connected inside the butterfly valve body. The water pipe is arranged on the left side of the butterfly valve body, and further includes: a filtering and intercepting mechanism, an abnormal warning mechanism, and an auxiliary sewage discharge mechanism, and the filtering and intercepting mechanism, the abnormal warning mechanism, and the auxiliary sewage discharge mechanism are all arranged between the butterfly valve body and the water pipe; The filtering and intercepting mechanism includes a connector and a filter plate, and the connector is detachably connected between the butterfly valve body and the water pipe. The filter plate is arranged inside the connector. The filtering and intercepting mechanism is used to filter and intercept the flowing water; The abnormal warning mechanism includes a rotating blade and a centrifugal plate. The rotating blade is arranged inside the connector, and the centrifugal plate is arranged outside the connector. The abnormal warning mechanism is used to provide a warning function when the water speed decreases; The auxiliary sewage discharge mechanism includes a sewage pipe and a sealing cover plate. The sewage pipe is arranged at the lower end of the connector, and the sealing cover plate is arranged above the sewage pipe. The auxiliary sewage discharge mechanism is used to drain water synchronously while giving a warning.

[0006] Preferably, the filtering and intercepting mechanism further includes sliding grooves annularly and equidistantly formed on the inner surface of the connector. The outer surface of the filter plate is annularly and equidistantly fixedly connected with sliding blocks, and the sliding blocks are slidably connected in the sliding grooves.

[0007] Preferably, a first return spring is fixedly connected between the sliding block and the groove wall of the sliding groove on the side away from the butterfly valve body. A first sealing soft plate is also fixedly connected between the sliding groove and the sliding block.

[0008] Preferably, the abnormal warning mechanism further includes a linkage shaft rotatably connected to the connector. The rotating blades are annularly and equidistantly fixedly connected to the outer surface of the linkage shaft, and the rotating blades are arranged on the right side of the filter plate. The rotating blades are used to push the filter plate.

[0009] Preferably, the front end of the linkage shaft penetrates through the connector, and a fixed ring is fixedly connected to the outer surface of the front end of the linkage shaft. A fixed cylinder is fixedly connected to the outer surface of the fixed ring. An embedding groove is formed on the side of the fixed cylinder away from the fixed ring. A second return spring is fixedly connected to the groove wall of the embedding groove facing the fixed cylinder, and the end of the second return spring away from the fixed ring is fixedly connected to the centrifugal plate.

[0010] Preferably, a bottom plate is arranged on the side of the centrifugal plate away from the fixed cylinder. A plurality of limiting rods are annularly and equidistantly fixedly connected between the bottom plate and the fixed cylinder, and the limiting rods penetrate through and are slidably connected to the centrifugal plate.

[0011] Preferably, an elastic telescopic column is fixedly connected to the side of the bottom plate facing the centrifugal plate. The end of the elastic telescopic column away from the bottom plate is fixedly connected to a movable plate. A first contact is arranged on the side of the movable plate away from the elastic telescopic column. A second contact is arranged on the side of the centrifugal plate facing the movable plate, and the first contact and the second contact are arranged on the same horizontal line.

[0012] Preferably, a protective cover is fixedly connected to the outer surface of the connector head, and the protective cover is coaxially arranged with the linkage shaft. An alarm is fixedly connected to one side of the protective cover away from the connector head.

[0013] Preferably, the auxiliary sewage discharge mechanism further includes a first connection groove opened on the inner surface of the lower end of the connector head. A second connection groove is vertically and downwardly communicated with the first connection groove. The sewage discharge pipe is fixedly communicated with one end of the connector head away from the butterfly valve body. The sealing cover plate is slidably connected to the first connection groove. A second sealing soft plate is fixedly connected between the groove wall on one side of the first connection groove away from the butterfly valve body and the sealing cover plate.

[0014] Preferably, a connection block is fixedly connected to the lower end of one side of the sealing cover plate away from the butterfly valve body, and the connection block is slidably connected to the second connection groove. An electric push rod is fixedly connected between the connection block and the second connection groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Through the settings of the filtering and intercepting mechanism, the abnormal warning mechanism and the auxiliary sewage discharge mechanism, by using the centrifugal action of the centrifugal plate and cooperating with the contact or non-contact between the first contact and the second contact, when the water flow velocity drops and is lower than the conventional velocity range, the sealing cover plate can be moved away from the sewage discharge pipe, so that the sewage filtered and doped with a large amount of impurity particles can be discharged through the sewage discharge pipe, thereby effectively preventing the situation of excessive accumulation of impurities inside the connector head and the water pipe, reducing equipment wear and failure rate caused by long-term overloading operation, thus prolonging the service life of the entire water treatment system. At the same time, the automated management mode can reduce the frequency of manual intervention, simplify the maintenance work, and make the equipment maintenance more convenient and efficient; Among them, by using the provided second sealing soft plate, it can serve as a physical barrier, effectively preventing water flow from entering the interior of the electric push rod, avoiding problems such as electrical short circuit, corrosion and mechanical failure caused by moisture, thereby protecting the electric push rod from damage and avoiding the interference of moisture, enabling the electric push rod to operate stably within its design parameters and not affecting its normal work due to performance degradation or failure caused by moisture.

[0016] (2) Through the setting of the filtering and intercepting mechanism and the use of the filter plate, it can effectively intercept impurity particles in the water flow, prevent them from entering the interior of the butterfly valve body, thereby protecting the valve flap and other internal components from wear, thus prolonging the overall service life of the butterfly valve body, reducing the frequency of replacement and maintenance, and by intercepting the impurity particles, it can effectively reduce problems such as blockage and jamming caused by impurities, which helps to improve the overall stability and reliability of the equipment.

[0017] (3) Through the setting of the abnormal warning mechanism, by utilizing the pushing force of the water flow on the rotating blades, centrifugal force can be generated on the centrifugal plate. In combination with the design of whether the first contact and the second contact are in contact, when the water flow rate drops below the normal flow rate range, a warning signal can be quickly issued, which helps to promptly detect existing blockage problems, thereby preventing the occurrence of more serious faults. At the same time, in cooperation with the auxiliary sewage discharge mechanism, when the water flow rate drops below the normal flow rate range, the auxiliary sewage discharge mechanism can be synchronously started to operate to discharge the sewage mixed with a large amount of impurity particles, which helps to restore the normal flow rate and pressure of the system and maintain the stability of the system; Among them, by utilizing the pushing force of the water flow on the rotating blades, the rotating blades can be driven to rotate inside the connector. The number of rotating blades is set to be multiple and evenly distributed on the linkage shaft. In cooperation with the rotational movement of the rotating blades, the rotating blades and the filter plate can form intermittent contact, reciprocally push the filter plate inside the connector, and utilize the interaction force generated between the movement of the filter plate and the water flow to loosen the impurity particles intercepted on the filter plate, causing them to fall off from the filter plate, thereby avoiding the blockage of the filter plate and affecting the water flow, and realizing the self-cleaning of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment shown in the present invention; Figure 2 It is a schematic diagram of the internal structure of the connector shown in the present invention; Figure 3 As shown in the present invention Figure 2 Enlarged schematic diagram of part A; Figure 4 It is a schematic diagram of the connection structure between the filter plate and the rotating blades shown in the present invention; Figure 5 As shown in the present invention Figure 4 Enlarged schematic diagram of part B; Figure 6 It is a schematic diagram of the connection structure of the centrifugal plate shown in the present invention; Figure 7 It is a schematic diagram of the connection structure of the sealing cover plate shown in the present invention.

[0019] The reference numerals in the figure are: 1, butterfly valve body; 2, valve stem; 3, valve flap; 4, water pipe; 5, filter and intercept mechanism; 501, connector; 502, chute; 503, first return spring; 504, slider; 505, filter plate; 506, first sealing soft plate; 6. Abnormal warning mechanism; 601. Linkage shaft; 602. Rotating blade; 603. Fixed ring; 604. Fixed cylinder; 605. Embedded groove; 606. Second return spring; 607. Centrifugal plate; 608. Limit rod; 609. Bottom plate; 610. Elastic telescopic column; 611. Movable plate; 612. First contact; 613. Second contact; 614. Protective cover; 615. Alarm 7. Auxiliary sewage discharge mechanism; 701. First connection groove; 702. Second connection groove; 703. Sewage discharge pipe; 704. Electric push rod; 705. Connection block; 706. Sealing cover plate; 707. Second sealing soft plate Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0021] Embodiment 1 of the present invention Please refer to Figures 1 to 7 As shown, a butterfly valve for controlling continuous flow includes a butterfly valve body 1 and a water pipe 4. A valve stem 2 is rotatably connected through the butterfly valve body 1. The outer surface of the lower end of the valve stem 2 is fixedly connected with a valve flap 3, and the valve flap 3 is movably connected inside the butterfly valve body 1. The water pipe 4 is arranged on the left side of the butterfly valve body 1. It further includes a filter intercepting mechanism 5, an abnormal warning mechanism 6, and an auxiliary sewage discharge mechanism 7, and the filter intercepting mechanism 5, the abnormal warning mechanism 6, and the auxiliary sewage discharge mechanism 7 are all arranged between the butterfly valve body 1 and the water pipe 4 The filter intercepting mechanism 5 includes a connection head 501 and a filter plate 505. The connection head 501 is detachably connected between the butterfly valve body 1 and the water pipe 4. The filter plate 505 is arranged inside the connection head 501. The filter intercepting mechanism 5 is used to filter and intercept the flowing water The abnormal warning mechanism 6 includes a rotating blade 602 and a centrifugal plate 607. The rotating blade 602 is arranged inside the connection head 501, and the centrifugal plate 607 is arranged outside the connection head 501. The abnormal warning mechanism 6 is used to provide a warning function when the water speed decreases The auxiliary sewage discharge mechanism 7 includes a sewage discharge pipe 703 and a sealing cover plate 706. The sewage discharge pipe 703 is arranged at the lower end of the connection head 501, and the sealing cover plate 706 is arranged above the sewage discharge pipe 703. The auxiliary sewage discharge mechanism 7 is used to drain water synchronously while giving a warning The filtering and intercepting mechanism 5 further includes a sliding groove 502 annularly and equidistantly formed on the inner surface of the connector 501. The outer surface of the filter plate 505 is fixedly connected with sliders 504 annularly and equidistantly, and the sliders 504 are slidably connected in the sliding groove 502; A first return spring 503 is fixedly connected between the slider 504 and the groove wall of the sliding groove 502 away from the butterfly valve body 1. A first sealing soft plate 506 is also fixedly connected between the sliding groove 502 and the slider 504.

[0022] The effects achieved by this embodiment are as follows: Compared with the prior art, through the setting of the filtering and intercepting mechanism 5 and the use of the filter plate 505, impurities and particulate matters in the water flow can be effectively intercepted, preventing them from entering the interior of the butterfly valve body 1, thereby protecting the valve flap 3 and other internal components from wear, thus prolonging the overall service life of the butterfly valve body 1, reducing the frequency of replacement and maintenance, and by intercepting the impurities and particulate matters, the problems of blockage and jamming caused by impurities can be effectively reduced, which helps to improve the overall stability and reliability of the equipment.

[0023] Embodiment Two of the present invention: Please refer to Figures 1 to 7 As shown, the abnormal warning mechanism 6 further includes a linkage shaft 601 rotatably connected to the connector 501. The rotating blades 602 are fixedly connected to the outer surface of the linkage shaft 601 annularly and equidistantly, and the rotating blades 602 are arranged on the right side of the filter plate 505. The rotating blades 602 are used to push the filter plate 505; The front end of the linkage shaft 601 penetrates through the connector 501, and a fixing ring 603 is fixedly connected to the outer surface of the front end of the linkage shaft 601. A fixing cylinder 604 is fixedly connected to the outer surface of the fixing ring 603. An embedding groove 605 is formed on the side of the fixing cylinder 604 away from the fixing ring 603. A second return spring 606 is fixedly connected to the groove wall of the embedding groove 605 facing the fixing cylinder 604, and the end of the second return spring 606 away from the fixing ring 603 is fixedly connected to the centrifugal plate 607; A bottom plate 609 is arranged on the side of the centrifugal plate 607 away from the fixing cylinder 604. A plurality of limiting rods 608 are fixedly connected between the bottom plate 609 and the fixing cylinder 604 annularly and equidistantly, and the limiting rods 608 penetrate through and are slidably connected to the centrifugal plate 607; An elastic telescopic column 610 is fixedly connected to the side of the bottom plate 609 facing the centrifugal plate 607. The end of the elastic telescopic column 610 away from the bottom plate 609 is fixedly connected to a movable plate 611. A first contact 612 is arranged on the side of the movable plate 611 away from the elastic telescopic column 610. A second contact 613 is arranged on the side of the centrifugal plate 607 facing the movable plate 611, and the first contact 612 and the second contact 613 are arranged on the same horizontal line; A protective cover 614 is fixedly connected to the outer surface of the connector 501, and the protective cover 614 is coaxially arranged with the linkage shaft 601. An alarm 615 is fixedly connected to the side of the protective cover 614 away from the connector 501.

[0024] The effects achieved by this embodiment are as follows: Compared with the prior art, through the setting of the abnormal warning mechanism 6, by using the pushing force of water flow on the rotating blades 602, a centrifugal effect can be generated on the centrifugal plate 607. Combined with the design of whether the first contact 612 and the second contact 613 are in contact, when the flow rate drops below the normal flow rate range, a warning signal can be quickly issued, which helps to promptly detect the existing blockage problem, thereby preventing the occurrence of more serious faults. At the same time, in cooperation with the auxiliary sewage discharge mechanism 7, when the flow rate drops below the normal flow rate range, the auxiliary sewage discharge mechanism 7 can be synchronously started to operate to discharge the sewage doped with a large amount of impurity particles, thereby helping to restore the normal flow rate and pressure of the system and maintaining the stability of the system. Among them, by using the pushing force of water flow on the rotating blades 602, the rotating blades 602 can be driven to rotate inside the connector 501. The number of rotating blades 602 is set to be multiple, and they are evenly distributed on the linkage shaft 601. In cooperation with the rotational movement of the rotating blades 602, the rotating blades 602 and the filter plate 505 can form intermittent contact, reciprocally pushing the filter plate 505 inside the connector 501. By using the interaction force generated between the movement of the filter plate 505 and the water flow, the impurity particles intercepted on the filter plate 505 can be loosened, causing them to fall off the filter plate 505, thereby preventing the filter plate 505 from being blocked and affecting the water flow, and realizing the self-cleaning of the filter plate 505.

[0025] Embodiment III of the present invention: Please refer to Figures 1 to 7 As shown, the auxiliary sewage discharge mechanism 7 further includes a first connection groove 701 opened on the inner surface of the lower end of the connector 501. The first connection groove 701 is vertically and downwardly communicated with a second connection groove 702. A sewage discharge pipe 703 is fixedly communicated with one end of the connector 501 away from the butterfly valve body 1. A sealing cover plate 706 is slidably connected inside the first connection groove 701. A second sealing soft plate 707 is fixedly connected between the side wall of the first connection groove 701 away from the butterfly valve body 1 and the sealing cover plate 706. A connection block 705 is fixedly connected to the lower end of the side of the sealing cover plate 706 away from the butterfly valve body 1, and the connection block 705 is slidably connected inside the second connection groove 702. An electric push rod 704 is fixedly connected between the connection block 705 and the second connection groove 702.

[0026] The effects achieved by this embodiment are as follows: Compared with the prior art, through the settings of the filtering and intercepting mechanism 5, the abnormal warning mechanism 6, and the auxiliary sewage discharge mechanism 7, by utilizing the centrifugal action of the centrifugal plate 607 and coordinating with the contact or non-contact between the first contact 612 and the second contact 613, when the water flow velocity drops and is lower than the normal flow velocity range, the sealing cover plate 706 can be moved away from the sewage pipe 703, enabling the sewage doped with a large amount of impurity particles to be discharged through the sewage pipe 703, thereby effectively preventing the situation of excessive internal accumulation of impurities between the connector 501 and the water pipe 4, reducing equipment wear and failure rate caused by long-term overloading operation, and thus extending the service life of the entire water treatment system. At the same time, the adoption of an automated management mode can reduce the frequency of manual intervention, simplify the maintenance work, and make equipment maintenance more convenient and efficient; Among them, by using the provided second sealing soft plate 707, it can serve as a physical barrier, effectively preventing water flow from entering the interior of the electric push rod 704, avoiding problems such as electrical short circuits, corrosion, and mechanical failures caused by moisture, thereby protecting the electric push rod 704 from damage and avoiding the interference of moisture, enabling the electric push rod 704 to operate stably within its design parameters and not affecting its normal operation due to performance degradation or failures caused by moisture.

[0027] The complete usage steps and working principles of the above embodiment are as follows: The following is the working process of the filtering and intercepting mechanism 5 for filtering and intercepting the flowing water, the abnormal warning mechanism 6 for providing a warning function when the water speed decreases, and the auxiliary sewage discharge mechanism 7 for synchronously draining water while giving a warning: It should be noted in advance that as Figure 1 and Figure 2 shown, the connector 501 is detachably arranged on the left side of the butterfly valve body 1, and the water pipe 4 is detachably arranged on the left side of the connector 501, that is, the connector 501 is of a detachable structure and is arranged between the butterfly valve body 1 and the water pipe 4. A valve flap 3 is arranged inside the butterfly valve body 1, and a valve rod 2 is connected to the valve flap 3. By rotating the valve rod 2, the valve flap 3 can be driven to rotate synchronously inside the butterfly valve body 1 to open or close the internal channel of the butterfly valve body 1. During the use of the butterfly valve body 1, the water flow first enters the interior of the connector 501 through the water pipe 4, and then enters the interior of the butterfly valve body 1 through the connector 501; During the process of the water flow entering the interior of the connector 501 through the water pipe 4, as Figure 2 、 Figure 4 and Figure 7As shown in the figure, since a filter plate 505 is provided inside one end of the connector 501 facing the water pipe 4, the passing water flow will first pass through the filter plate 505 for filtration, intercepting the impurity particles mixed in the water on the left side of the filter plate 505 to prevent them from entering the inside of the butterfly valve body 1, thereby protecting the valve flap 3 and other internal components from wear, extending the overall service life of the butterfly valve body 1, reducing the frequency of replacement and maintenance, and effectively reducing the blockage and jamming problems caused by impurities by intercepting the impurity particles, which helps to improve the overall stability and reliability of the equipment; And the filtered water flow continues to flow towards the butterfly valve body 1. Since a linkage shaft 601 is rotatably provided inside the connector 501, and rotating blades 602 are fixedly provided on the outer surface of the linkage shaft 601 at equal intervals in a ring shape, and the rotating blades 602 and the linkage shaft 601 are synchronously arranged on the right side of the filter plate 505, that is, between the filter plate 505 and the butterfly valve body 1. Through the continuous flow of the water flow, the rotating blades 602 can be pushed, so that the rotating blades 602 and the linkage shaft 601 rotate synchronously on the connector 501. At this time, since the number of the rotating blades 602 is set to be multiple and evenly distributed on the linkage shaft 601, with the rotational movement of the rotating blades 602, intermittent contact can be formed between the rotating blades 602 and the filter plate 505. As the rotating blades 602 continue to rotate, the filter plate 505 can be pushed to move away from the butterfly valve body 1, as Figure 2 , Figure 3 , Figure 4 and Figure 7As shown in the figure, since sliders 504 are fixedly arranged on the outer surface of the filter plate 505 at equal intervals in a circular shape, and sliding grooves 502 adapted to the sliders 504 are formed at equal intervals in a circular shape on the inner surface of the end of the connecting head 501 far away from the butterfly valve body 1, and the sliders 504 are slidably arranged in the sliding grooves 502, a first return spring 503 is fixedly arranged between the sliders 504 and the groove wall on the side of the sliding grooves 502 far away from the butterfly valve body 1. While the rotating blade 602 rotates to push the filter plate 505 to move, the sliders 504 will synchronously slide in the sliding grooves 502 in the direction away from the butterfly valve body 1. At this time, through the movement of the sliders 504, the first return spring 503 can be synchronously compressed, so that the first return spring 503 can be compressed in the sliding grooves 502. Also, because a first sealing soft plate 506 is fixedly arranged between the sliding grooves 502 and the sliders 504, when the sliders 504 move to compress the first return spring 503, the first sealing soft plate 506 is synchronously transformed into a corrugated shape. As the linkage shaft 601 continues to rotate, the rotating blade 602 that pushes the filter plate 505 to move rotates synchronously, so that the rotating blade 602 and the filter plate 505 lose contact. At this time, the filter plate 505 falls into the gap between two adjacent rotating blades 602. Since the filter plate 505 is not in contact with the rotating blade 602, the generated thrust disappears synchronously. Under the elastic force of the first return spring 503, the sliders 504 can be driven to slide in the sliding grooves 502 in the direction close to the butterfly valve body 1, synchronously enabling the filter plate 505 to return to its original position. The corrugated first sealing soft plate 506 is also stretched and laid flat in the sliding grooves 502 synchronously, which can seal the first return spring 503, prevent the water flow from contacting the first return spring 503, and damage the first return spring 503. As the rotating blade 602 continues to rotate, and so on, the filter plate 505 can reciprocate horizontally inside the connecting head 501. By using the interaction force generated between the movement of the filter plate 505 and the water flow, the impurity particles intercepted on the filter plate 505 can be loosened, so that they fall off from the filter plate 505, thereby avoiding the situation that the filter plate 505 is blocked and affecting the water flow, and realizing the self-cleaning of the filter plate 505; It should be noted in advance that as Figure 1 shown, a protective cover 614 is fixedly arranged on the outer surface of the connecting head 501, and an alarm 615 for warning when the water flow speed drops is fixedly arranged on the side of the protective cover 614 far away from the connecting head 501. The front end of the linkage shaft 601 penetrates through the connecting head 501 and extends into the protective cover 614, and other structures connected to the front end of the linkage shaft 601 are arranged inside the protective cover 614. The specific content is as shown later. Among them, through the arrangement of the protective cover 614, the structures connected to the outer surface of the front end of the linkage shaft 601 can be covered and protected, effectively reducing the direct contact between the front-end structure of the linkage shaft 601 and the external environment, preventing the occurrence of knocking, and thus prolonging the service life; such as Figure 4 and Figure 5 and Figure 6As shown, during the process that the flowing water drives the rotating blade 602 to rotate inside the connector 501 and drives the linkage shaft 601 to rotate synchronously on the connector 501, since the front end of the linkage shaft 601 penetrates through the connector 501, and a fixing ring 603 is fixedly arranged on the outer surface of the front end of the linkage shaft 601, and a fixing cylinder 604 is fixedly connected to the outer surface of the fixing ring 603. As the linkage shaft 601 rotates, the fixing ring 603 and the fixing cylinder 604 can rotate synchronously around the linkage shaft 601 as the axis between the protective cover 614 and the outer wall of the connector 501. Also, because a slot 605 is formed on the side of the fixing cylinder 604 away from the fixing ring 603, and a second return spring 606 is fixedly arranged on the side wall of the slot 605 facing the fixing ring 603, and a centrifugal plate 607 is fixedly arranged at the end of the second return spring 606 away from the fixing ring 603. When the rotation of the linkage shaft 601 drives the fixing ring 603 and the fixing cylinder 604 to rotate synchronously, under the centrifugal force, the centrifugal plate 607 can be driven to move away from the fixing ring 603. At this time, the second return spring 606 is stretched synchronously. Also, because a plurality of limiting rods 608 are fixedly arranged at equal intervals in a ring shape on the side of the fixing cylinder 604 facing the centrifugal plate 607, and the limiting rods 608 and the centrifugal plate 607 are slidably connected through each other. When the centrifugal plate 607 moves, the movement path of the centrifugal plate 607 can be limited through the arranged limiting rods 608, so that the movement process of the centrifugal plate 607 can be more stable. A bottom plate 609 is fixedly arranged between the ends of the limiting rods 608 away from the fixing cylinder 604, and an elastic telescopic column 610 is fixedly arranged at the center of the side of the bottom plate 609 facing the centrifugal plate 607. An activity plate 611 is fixedly arranged at the end of the elastic telescopic column 610 facing the centrifugal plate 607. When the centrifugal plate 607 is driven to move away from the fixing cylinder 604, it will move towards the activity plate 611. Since a first contact 612 is arranged on the side of the activity plate 611 facing the centrifugal plate 607, a second contact 613 is arranged on the side of the centrifugal plate 607 facing the activity plate 611, and the first contact 612 and the second contact 613 are arranged opposite to each other and on the same horizontal line. When the centrifugal plate 607 moves towards the activity plate 611, the second contact 613 will approach the first contact 612, and finally the second contact 613 and the first contact 612 will come into contact with each other. When the water flow rate is within the normal flow rate range, through the movement of the centrifugal plate 607, the activity plate 611 can be driven to move towards the bottom plate 609, and the elastic telescopic column 610 is squeezed synchronously. When the water flow rate drops and is lower than the normal flow rate range, the rotational driving effect of the water flow on the rotating blade 602 drops synchronously, resulting in a synchronous reduction in the centrifugal force, so that the centrifugal force of the centrifugal plate 607 is insufficient, and the pushing force on the activity plate 611 drops synchronously. At this time, the elastic telescopic column 610 will restore the position of the activity plate 611. At this time, the centrifugal plate 607 fails to contact the activity plate 611, and the contact between the first contact 612 and the second contact 613 will be lost synchronously (it should be noted here thatWithin the normal flow rate range, the centrifugal force causes the first contact 612 and the second contact 613 to come into contact. When the flow rate drops below the normal flow rate range, the insufficient centrifugal force causes the first contact 612 and the second contact 613 to lose contact. When the first contact 612 and the second contact 613 are in contact, the alarm 615 does not start operating. When the first contact 612 and the second contact 613 lose contact, the alarm 615 starts operating. At this time, the alarm 615 provided on the protective cover 614 will be synchronously turned on for early warning to prompt the nearby staff that there is an abnormal flow rate situation here; Through the setting of the abnormal warning mechanism 6, by using the pushing force of the water flow on the rotating blade 602, a centrifugal force can be generated on the centrifugal plate 607. In combination with the design of whether the first contact 612 and the second contact 613 are in contact or not, when the flow rate drops below the normal flow rate range, a warning signal can be quickly sent out, which helps to timely detect the existing blockage problem, thereby preventing the occurrence of more serious faults. At the same time, in cooperation with the auxiliary sewage discharge mechanism 7, when the flow rate drops below the normal flow rate range, the auxiliary sewage discharge mechanism 7 can be synchronously started to operate to discharge the sewage doped with a large amount of impurity particles, thereby helping to restore the normal flow rate and pressure of the system and maintaining the stability of the system; It should be noted in advance that, as Figure 6 and Figure 7 shown, when the first contact 612 and the second contact 613 are in contact, the electric push rod 704 does not start operating. When the first contact 612 and the second contact 613 lose contact, not only the alarm 615 is started to operate, but also the electric push rod 704 is synchronously started to operate; As Figure 2 、 Figure 3 and Figure 7As shown in the figure, since a first connection groove 701 is provided on the inner surface of the lower end of the connector 501, and the first connection groove 701 vertically communicates downward with a second connection groove 702, and a sealing cover plate 706 is slidably arranged in the first connection groove 701, and a connection block 705 is slidably arranged in the second connection groove 702, and the connection block 705 is fixedly arranged at the lower end of the side of the sealing cover plate 706 away from the butterfly valve body 1, and the electric push rod 704 is fixedly arranged between the connection block 705 and the groove wall of the side of the second connection groove 702 away from the butterfly valve body 1. When the flow rate of the water flow decreases and is lower than the normal flow rate range, the electric push rod 704 starts to operate synchronously, driving the connection block 705 in a direction away from the butterfly valve body 1. At this time, since a sewage discharge pipe 703 is fixedly arranged through the lower end of the connector 501, the sealing cover plate 706 covers the upper surface of the sewage discharge pipe 703, and the sewage discharge pipe 703 is arranged on the left side of the filter plate 505. By driving the connection block 705 by the electric push rod 704, the sealing cover plate 706 can be synchronously moved away from the upper direction of the sewage discharge pipe 703 in a direction away from the butterfly valve body 1 and slide inside the first connection groove 701, so that the sewage discharge pipe 703 and the left end inside of the connector 501 are in a communicating state, and the water flow doped with a large amount of impurity particles is discharged outside. At this time, since a second sealing soft plate 707 is fixedly arranged between the sealing cover plate 706 and the groove wall of the side of the first connection groove 701 away from the butterfly valve body 1, the second sealing soft plate 707 can be synchronously formed into a folded shape by the movement of the sealing cover plate 706. When the sealing cover plate 706 covers the upper side of the sewage discharge pipe 703, the folded second sealing soft plate 707 can be stretched to be in a flat state, thereby realizing the sealing of the electric push rod 704 and preventing the water flow from contacting the electric push rod 704 and damaging the electric push rod 704; In the above process, through the settings of the filtration and interception mechanism 5, the abnormal warning mechanism 6 and the auxiliary sewage discharge mechanism 7, by using the centrifugal action of the centrifugal plate 607 and cooperating with the contact or non-contact between the first contact 612 and the second contact 613, when the water flow rate decreases and is lower than the normal flow rate range, the sealing cover plate 706 can be moved away from the sewage discharge pipe 703, so that the sewage doped with a large amount of impurity particles can be discharged through the sewage discharge pipe 703, thereby effectively preventing the situation that too many impurities accumulate inside between the connector 501 and the water pipe 4, reducing the equipment wear and failure rate caused by long-term overload operation, and thus prolonging the service life of the entire water treatment system. At the same time, the adoption of an automated management mode can reduce the frequency of manual intervention and simplify the maintenance work, making the equipment maintenance more convenient and efficient; Please refer to the above working process Figures 1 to 7 。

[0028] The circuits and controls involved in the present invention are all prior arts and will not be elaborated here too much.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve for controlling continuous flow, comprising a butterfly valve body (1) and a water pipe (4), wherein a valve stem (2) is rotatably connected to the butterfly valve body (1), a valve flap (3) is fixedly connected to the outer surface of the lower end of the valve stem (2), and the valve flap (3) is movably connected to the inside of the butterfly valve body (1), and the water pipe (4) is arranged on the left side of the butterfly valve body (1), characterized in that: It also includes: a filtering and intercepting mechanism (5), an abnormal warning mechanism (6) and an auxiliary sewage discharge mechanism (7), and the filtering and intercepting mechanism (5), the abnormal warning mechanism (6) and the auxiliary sewage discharge mechanism (7) are all arranged between the butterfly valve body (1) and the water pipe (4); The filtering and intercepting mechanism (5) comprises a connecting head (501) and a filtering plate (505), and the connecting head (501) is detachably connected between the butterfly valve body (1) and the water pipe (4), and the filtering plate (505) is arranged in the connecting head (501); The abnormal warning mechanism (6) comprises a rotating blade (602) and a centrifugal plate (607), wherein the rotating blade (602) is arranged inside the connecting head (501), and the centrifugal plate (607) is arranged outside the connecting head (501); The auxiliary sewage discharge mechanism (7) comprises a sewage discharge pipe (703) and a sealing cover plate (706), wherein the sewage discharge pipe (703) is arranged at the lower end of the connector (501), and the sealing cover plate (706) is arranged above the sewage discharge pipe (703).

2. A butterfly valve for controlling continuous flow according to claim 1, characterized in that: The filtering and intercepting mechanism (5) further comprises a slide groove (502) which is equidistantly arranged in an annular shape on the inner surface of the connecting head (501); a slider (504) is fixedly connected in an annular shape and equidistantly arranged on the outer surface of the filtering plate (505); and the slider (504) is slidably connected in the slide groove (502).

3. A butterfly valve for controlling continuous flow according to claim 2, characterized in that: A first return spring (503) is fixedly connected between the slider (504) and a groove wall of the sliding groove (502) away from the butterfly valve body (1), and a first sealing soft plate (506) is also fixedly connected between the sliding groove (502) and the slider (504).

4. A butterfly valve for controlling continuous flow according to claim 1, characterized in that: The abnormal warning mechanism (6) further comprises a linkage shaft (601) rotatably connected to the connector (501); the rotating blades (602) are annularly equidistantly fixedly connected to the outer surface of the linkage shaft (601); and the rotating blades (602) are arranged on the right side of the filter plate (505); the rotating blades (602) are used to push the filter plate (505).

5. A butterfly valve for controlling continuous flow according to claim 4, characterized in that: The front end of the linkage shaft (601) passes through the connector (501), and a fixing ring (603) is fixedly connected to the outer surface of the front end of the linkage shaft (601), and a fixing cylinder (604) is fixedly connected to the outer surface of the fixing ring (603), and a embedding groove (605) is provided on a side of the fixing cylinder (604) away from the fixing ring (603), and a second return spring (606) is fixedly connected to a groove wall on a side of the embedding groove (605) facing the fixing cylinder (604), and one end of the second return spring (606) away from the fixing ring (603) is fixedly connected to a centrifugal plate (607).

6. A butterfly valve for controlling continuous flow according to claim 5, characterized in that: A bottom plate (609) is provided on one side of the centrifugal plate (607) away from the fixed cylinder (604), and a limiting rod (608) is fixedly connected to the bottom plate (609) and the fixed cylinder (604) in an annular shape at equal intervals, and the limiting rod (608) is slidably connected to the centrifugal plate (607).

7. A butterfly valve for controlling continuous flow according to claim 6, characterized in that: An elastic telescopic column (610) is fixedly connected to one side of the bottom plate (609) facing the centrifugal plate (607); an end of the elastic telescopic column (610) away from the bottom plate (609) is fixedly connected to a movable plate (611); a first contact point (612) is provided on one side of the movable plate (611) away from the elastic telescopic column (610); a second contact point (613) is provided on one side of the centrifugal plate (607) facing the movable plate (611); and the first contact point (612) and the second contact point (613) are arranged on the same horizontal line.

8. A butterfly valve for controlling continuous flow according to claim 7, characterized in that: A protective cover (614) is fixedly connected to the outer surface of the connector (501), and the protective cover (614) is coaxially arranged with the linkage shaft (601), and an alarm (615) is fixedly connected to a side of the protective cover (614) away from the connector (501).

9. A butterfly valve for controlling continuous flow according to claim 1, characterized in that: The auxiliary sewage discharge mechanism (7) further comprises a first connecting groove (701) provided on the inner surface of the lower end of the connecting head (501); the first connecting groove (701) is connected vertically downward to a second connecting groove (702); the sewage discharge pipe (703) is fixedly connected to an end of the connecting head (501) away from the butterfly valve body (1); the sealing cover plate (706) is slidably connected in the first connecting groove (701); and a second sealing soft plate (707) is fixedly connected between a groove wall on one side of the first connecting groove (701) away from the butterfly valve body (1) and the sealing cover plate (706).

10. A butterfly valve for controlling continuous flow according to claim 9, characterized in that: A connecting block (705) is fixedly connected to the lower end of the sealing cover plate (706) on a side away from the butterfly valve body (1), and the connecting block (705) is slidably connected in the second connecting groove (702), and an electric push rod (704) is fixedly connected between the connecting block (705) and the second connecting groove (702).

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