A rotary filter screen for water pump station and its application method in water conservancy irrigation

Abstract

The present application relates to the technical field of water pumping stations, and specifically discloses a water pumping station rotary filter and its application method in water conservancy irrigation, wherein the water pumping station rotary filter includes a fixed frame, and also includes: an outer cylinder fixedly mounted on the fixed frame; a rotating cylinder rotatably arranged on the inner side of the outer cylinder, and a filter is arranged on the peripheral side of the rotating cylinder; a power mechanism is arranged on an outer wall of one side of the fixed frame, and the power mechanism is connected to the rotating cylinder to drive the rotating cylinder to rotate; a backwashing mechanism is connected to the top of the outer cylinder, and the backwashing mechanism is used to backwash the rotating cylinder; a guiding mechanism can penetrate into the upper half of the inner cavity of the rotating cylinder, and the guiding mechanism is used to collect dirt dropped by backwashing on the rotating cylinder. The present invention can enhance the filtering effect, avoid blockage, improve the self-cleaning function, and have better impurity handling capabilities.

Description

Technical Field

[0001] The invention relates to the technical field of water intake pump stations, in particular to a rotary filter screen of a water intake pump station and an application method thereof in water conservancy irrigation. Background Art

[0002] In a water intake pump station, water filtration is a vital task. At present, traditional water intake pump station filtering devices often have many problems during use; for example, the filter screen is easy to clog, and it is difficult to clean after impurities accumulate, resulting in a decrease in filtering effect and affecting the normal operation of the pump station; moreover, the existing filtering device has an imperfect self-cleaning function and needs to be frequently shut down for manual cleaning, which not only consumes manpower and material resources, but also reduces work efficiency; in addition, when filtering large particles of impurities, the traditional device is prone to long-term accumulation of impurities, resulting in clogging and wear of the filter screen, and it is impossible to effectively guide the large particles of impurities out of the device; at the same time, the backwashing effect is not good, and the filter screen cannot be fully covered, so that impurities will still remain on the filter screen; in terms of waste collection, there is also a lack of effective means, which makes it easy for the waste to flow back into the filter screen or the water body, affecting the sustainability of the filtering effect; in summary, the existing water intake pump station filtering devices have problems such as poor filtering effect, easy clogging, imperfect self-cleaning function, insufficient large particle impurity processing capacity, and difficulty in collecting and discharging waste. A new type of water intake pump station rotating filter is urgently needed to solve these problems. Summary of the invention

[0003] The embodiment of the present application provides a rotary filter screen for a water intake pump station and an application method thereof in water conservancy irrigation, the main purpose of which is to enhance the filtering effect, avoid clogging, improve the self-cleaning function and have better impurity handling capabilities.

[0004] To achieve the above-mentioned purpose, a water intake pump station rotary filter according to an embodiment of the present application includes a fixing frame and further includes:

[0005] An outer cylinder is fixedly mounted on the fixing frame;

[0006] A rotating cylinder is rotatably arranged inside the outer cylinder, and a filter screen is arranged around the rotating cylinder;

[0007] A power mechanism is arranged on an outer wall of one side of the fixing frame, and the power mechanism is connected to the rotating drum to drive the rotating drum to rotate;

[0008] A backwashing mechanism connected to the top of the outer cylinder, the backwashing mechanism being used to backwash the rotating cylinder;

[0009] The guiding mechanism can penetrate into the upper half of the inner cavity of the rotating drum, and the guiding mechanism is used to collect dirt dropped from the rotating drum during backwashing.

[0010] In a feasible embodiment, the rotating cylinder includes a cylinder body, the filter screen is located on the cylinder body, and also includes: a plurality of spiral propulsion pieces fixedly mounted on the inner wall of the filter screen, for guiding out large particle impurities that are always at the bottom of the filter screen in a linear motion; an outward extension piece fixedly mounted on the cylinder body away from the side of the power mechanism in the cylinder body; a gear ring fixedly mounted on the inner wall of the end of the cylinder body close to the side of the power mechanism; and a water inlet is arranged on the inner side of the gear ring.

[0011] In a feasible embodiment, the power mechanism includes: an outer transmission wheel fixedly mounted on the outside of the outer wall of the end of the cylinder body and located on the outside of the water inlet; a drive motor fixedly mounted on the fixed frame; one end of the transmission assembly is transmission-connected to the output end of the drive motor, and the other end is transmission-connected to the outer transmission wheel, and the transmission assembly is used to transmit the power of the drive motor to the cylinder body.

[0012] In a feasible embodiment, the guiding mechanism includes an outer support frame, and also includes: a base fixed at the bottom end of the outer support frame and extending to the interior of the fixed frame; a debris receiving disc is connected to the outer support frame and can extend into the interior of the cylinder body, and the position of the debris receiving disc corresponds to the position of the backwashing mechanism; a boosting mechanism is fixedly arranged on the debris receiving disc, and the boosting mechanism is engaged with the gear ring; so as to collect kinetic energy by means of the rotation of the cylinder body; an air storage tank is fixedly arranged on the debris receiving disc, and the air storage tank is connected to the output end of the boosting mechanism and can form a positive pressure environment; at least one air supply pipe is connected to the output end of the air storage tank, and the air supply pipe is arranged parallel to the axis of the cylinder body; an intercepting nozzle is fixedly arranged on the pipe body of the air supply pipe, and the intercepting nozzle faces the filter screen, and its spraying action height is located between the backwashing mechanism and the debris receiving disc, and it sprays from bottom to top; a sewage pipe, wherein the sewage pipe is connected to the outer support frame and communicates with the debris receiving disc through the outer support frame.

[0013] In a feasible embodiment, the bottom end of the debris receiving tray is inclined and provided with a water outlet, the water outlet is connected to the sewage pipe, and support rods are also provided on both sides of the bottom end of the debris receiving tray, and the other end of the support rod is telescopically connected to the outer support frame.

[0014] In a feasible embodiment, the backwashing mechanism includes: at least one spray branch pipe is fixedly arranged on the top end of the outer cylinder, and a spray main pipe is connected to all the spray branches for supplying water to the spray branches; a plurality of spray heads are fixedly arranged below the spray branches and facing the filter screen for backwashing the filter screen.

[0015] In a feasible embodiment, a plurality of limiting mechanisms are further provided on the fixed frame, and the limiting mechanisms include: rollers are fixedly arranged in groups of two on the front and rear sides of both ends of the bottom of the rotating cylinder, and a limiting groove is opened in the middle of the rollers; the limiting strip is annular as a whole, fixedly arranged on the outer wall of the rotating cylinder, and clamped in the limiting groove.

[0016] In a feasible embodiment, the boosting mechanism includes: an air injection cylinder fixedly mounted on the receiving plate; a reciprocating screw rotatably arranged inside the air injection cylinder; a piston linearly movably sleeved on the outer wall of the reciprocating screw through a screw nut; one end of the air injection pipe is connected to the air injection cylinder and communicated with the inner cavity of the air injection cylinder, and the other end of the air injection pipe is connected to the air storage tank; a one-way valve is fixedly arranged on the air injection pipe; a gear is fixedly sleeved on the outer end of the reciprocating screw and is located on the outside of the air injection cylinder, and the gear is meshed with the inner teeth of the gear ring.

[0017] A method for applying a rotary filter screen of a water intake pump station in water conservancy irrigation, using the rotary filter screen of the water intake pump station as described in the above technical solution, specifically further comprising the following steps:

[0018] When the water pump station is running, the outer cylinder is fixed on the fixed frame, and the rotating cylinder is driven by the power mechanism to rotate. A filter is installed on the peripheral side of the rotating cylinder to filter large particles of impurities in the water. As the rotating cylinder rotates, water enters the rotating cylinder through the filter, and the filtered water is discharged from the cylinder.

[0019] When the filter needs to be cleaned, the backwash mechanism starts to spray water onto the surface of the rotating drum to remove the dirt attached to the filter. During the cleaning process, the guide mechanism goes deep into the upper half of the inner cavity of the rotating drum to collect the dirt washed down by backwashing and guide it out of the system to prevent the dirt from entering the filter again.

[0020] With the help of the pressurized and redirected airflow of the guide mechanism, the device further cleans the filter thoroughly; intercepting the sewage flowing along the spiral propeller or filter to prevent debris from adhering to the filter again.

[0021] The present application provides a water pump station rotary filter and an application method thereof in water conservancy irrigation, which at least includes the following beneficial effects:

[0022] The rotating filter screen of the water intake pump station of the present application realizes continuous rotation of the filter screen through the drive of the power mechanism, so that the water flow can flow through the filter screen evenly, and at the same time, the rotating motion cooperates with the change of the water flow to ensure that all parts of the filter screen can be effectively cleaned; the backwashing mechanism is located at the top of the outer cylinder, and the filter screen is regularly or continuously cleaned through the spray head to flush away the attached impurities; the guiding mechanism uses the rotational kinetic energy of the rotating cylinder to generate compressed air through the cooperation of the boosting mechanism and the air supply pipe, and then sprays it at a specific angle through the intercepting nozzle, effectively intercepting and collecting the dirt in the backwashing process to prevent it from re-attaching to the filter screen or flowing back into the water body; this airflow interception mechanism not only improves the cleaning efficiency of the filter screen, but also helps to maintain the long-term filtering performance of the filter screen; thereby achieving efficient filtration of impurities in the water, and automatically cleaning the filter screen to avoid the accumulation and blockage of dirt, ensuring the efficient and stable operation of the equipment, and significantly improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a first angle of a rotating filter screen of a water intake pump station provided in an embodiment of the present application is shown;

[0024] Figure 2 A schematic structural diagram of a second angle of a rotating filter screen of a water intake pump station provided in an embodiment of the present application is shown;

[0025] Figure 3 A schematic diagram of a side view of a rotary filter screen of a water intake pump station provided in an embodiment of the present application is shown;

[0026] Figure 4 Another side view of the rotary filter screen of the water intake pump station provided in the embodiment of the present application is shown;

[0027] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a rotary filter screen for a water intake pump station provided in an embodiment of the present application is shown;

[0028] Figure 6 A schematic diagram of the structure of the gear ring provided in an embodiment of the present application is shown;

[0029] Figure 7 A schematic diagram of the structure of the guide mechanism provided in an embodiment of the present application is shown;

[0030] Figure 8 A schematic structural diagram of a boosting mechanism provided in an embodiment of the present application is shown.

[0031] In the figure: 10, fixed frame, 20, outer cylinder, 30, rotating cylinder, 40, power mechanism, 50, guiding mechanism, 60, backwashing mechanism, 70, limiting mechanism, 31, cylinder body, 32, spiral propulsion piece, 33, outward expansion piece, 34, gear ring, 35, water inlet, 41, outer transmission wheel, 42, driving motor, 43, transmission assembly, 51, outer support frame, 52, base, 53, receiving plate, 54, booster mechanism, 55, gas storage tank, 56, gas supply pipe, 57, intercepting nozzle, 58, support rod, 59, sewage pipe, 61, spray main pipe, 62, spray branch pipe, 63, spray head, 71, limiting strip, 541, gas injection cylinder, 542, reciprocating screw rod, 543, piston, 544, gas injection pipe, 545, one-way valve, 546, gear. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0033] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0034] Example 1

[0035] Please refer to Figures 1 to Figure 8 As shown, the embodiment of the present application provides a water intake pump station rotary filter in a first aspect, including a fixed frame 10, and also includes: an outer cylinder 20, a rotating cylinder 30, a power mechanism 40, a guide mechanism 50 and a backwash mechanism 60.

[0036] Specifically, the outer cylinder 20 is fixedly mounted on the fixing frame 10; Figure 1As shown, the top end of the outer cylinder 20 is in an open state to facilitate cleaning of the rotating cylinder, the rotating cylinder 30 is rotatably arranged on the inner side of the outer cylinder 20, and a filter is arranged on the peripheral side of the rotating cylinder 30; the power mechanism 40 is arranged on the outer wall of one side of the fixed frame 10, and the power mechanism 40 is connected to the rotating cylinder 30 to drive the rotating cylinder 30 to rotate; the backwashing mechanism 60 is connected to the top end of the outer cylinder 20, and the backwashing mechanism 60 is used to backwash the rotating cylinder 30; the guide mechanism 50 can penetrate into the upper half of the inner cavity of the rotating cylinder 30, and the guide mechanism 50 is used to collect dirt dropped from the rotating cylinder 30 by backwashing.

[0037] The rotary filter screen for a water pump station provided in the present application is mainly used to achieve efficient water filtration and self-cleaning functions; specifically, the outer cylinder 20 is fixed on the fixing frame 10 as a supporting and protective member of the filtering structure, and the top end is kept open to facilitate backwashing, so that the dirt is separated from the filter screen; the filter screen is installed inside the rotating cylinder 30, and when water flows through the filter screen, the rotating cylinder 30 rotates continuously. This rotation cooperates with the change in the direction of the water flow to ensure that the water flow can act on different positions of the filter screen, cooperate with the backwashing effect, and thus maintain the cleaning performance of the filter screen; the power mechanism 40 is connected to the rotating cylinder 30 to provide rotation The rotational force enables the rotating drum 30 to operate continuously; the backwashing mechanism 60 is located at the top of the outer drum 20, and is used to regularly or continuously clean the rotating drum 30, and to flush the impurities on the filter screen with the help of spray water flow; the guiding mechanism 50 penetrates into the upper half of the inner cavity of the rotating drum 30, and is specifically used to collect the dirt dropped during the backwashing process to prevent the dirt from flowing back into the filter screen or the water body; therefore, the overall rotating filter device continuously filters impurities in the water and automatically cleans the filter screen through the synergistic effect of rotation, backwashing and the guiding mechanism 50, thereby avoiding dirt accumulation and filter screen clogging, ensuring the efficient and long-term operation of the device and significantly improving the filtering effect.

[0038] like Figures 1 to 7 As shown, in some examples, further, the rotating cylinder 30 includes a cylinder body 31, the filter is located on the cylinder body 31, and also includes: a plurality of sections of spiral propulsion pieces 32, extension pieces 33, gear rings 34 and water inlet 35, the plurality of sections of spiral propulsion pieces 32 are fixedly mounted on the inner wall of the filter, and are used to guide out large particles of impurities that are always at the bottom of the filter in a linear manner; the extension pieces 33 are fixedly mounted on the cylinder body 31 away from the side of the power mechanism 40 in the cylinder body 31; the gear ring 34 is fixedly mounted on the inner wall of the end of the cylinder body 31 close to the side of the power mechanism 40; and the water inlet 35 is arranged on the inner side of the gear ring 34.

[0039] In this example, the setting of the rotating drum 30 realizes effective filtration and discharge of impurities, and serves as the main filtering component in the present device; specifically, a filter screen is installed on the barrel body 31 of the rotating drum 30, and water flows through the filter screen into the interior of the barrel body 31 to achieve a preliminary filtration effect; a plurality of spiral propulsion pieces 32 are fixed on the inner wall of the filter screen. When there are large particle impurities that are significantly larger than the filter diameter of the filter screen in the water quality, the large particle matter cannot rotate synchronously with the rotation of the filter screen, but always remains at the bottom of the cylindrical filter screen under the action of its own gravity. However, the spiral propulsion piece 32 will continue to rotate with the multiple filter screens during this process, and with the help of the spiral structure, the large particle impurities accumulated at the bottom of the filter screen are gradually pushed to the outlet position, thereby avoiding the long-term accumulation of impurities leading to clogging and wear of the filter screen. ; The extension piece 33 is installed on the cylinder body 31 on the side away from the power mechanism 40, so that large particles of impurities are discharged to the outside of the device; the ring gear 34 is located on the inner wall of the end close to the power mechanism 40, and by engaging with the transmission system, it ensures that the rotating cylinder 30 can rotate stably. At the same time, it also serves as a transmission component to provide power to the guide mechanism 50 to complete the subsequent air compression process; the water inlet 35 is arranged on the inner side of the ring gear 34, so that the water flow can smoothly enter the interior of the rotating cylinder 30 for filtration; therefore, the rotating cylinder 30 can not only effectively discharge large particles of impurities, but also ensure the stability and continuity of the water flow during the filtration process, avoid the backflow of impurities or re-attachment to the filter screen, thereby improving the filtration efficiency and the long-term operation performance of the equipment.

[0040] like Figures 2 to 5 As shown, in some examples, further, the power mechanism 40 includes: an outer transmission wheel 41, a driving motor 42 and a transmission assembly 43, the outer transmission wheel 41 is fixedly mounted on the outer side of the end outer wall of the barrel 31, and is located on the outer side of the water inlet 35; the driving motor 42 is fixedly mounted on the fixed frame 10; one end of the transmission assembly 43 is transmission-connected to the output end of the driving motor 42, and the other end is transmission-connected to the outer transmission wheel 41, and the transmission assembly 43 is used to transmit the power of the driving motor 42 to the barrel 31.

[0041] In this example, the power mechanism 40 realizes the continuous operation of the rotating drum 30 through the combined action of the driving motor 42, the transmission assembly 43 and the outer transmission wheel 41; specifically, the driving motor 42 is fixed on the fixed frame 10 as a power source, and outputs rotational power; the transmission assembly 43 is connected between the output end of the driving motor 42 and the outer transmission wheel 41, and is responsible for effectively transmitting the power of the driving motor 42 to the outer transmission wheel 41 of the rotating drum 30; wherein, the transmission assembly 43 can adopt a transmission method of a belt and a pulley, or a chain and a sprocket, and the outer transmission wheel 41 is located on the outer side of the end of the cylinder body 31. Through the connection with the transmission assembly 43, the outer transmission wheel 41 transmits power to the rotating drum 30, so that the cylinder body 31 can rotate continuously; ensure that the rotating drum 30 maintains a balanced and continuous rotation state during the filtration process of the filter, so that when the water flow passes through different areas of the filter, it can act evenly on each position, avoiding the accumulation of impurities in the local area of ​​the filter.

[0042] like Figure 7 As shown, in some examples, further, the guiding mechanism 50 includes an outer support frame 51, and also includes: a base 52, a debris receiving plate 53, a pressurizing mechanism 54, an air storage tank 55, at least one air supply pipe 56, an intercepting nozzle 57 and a sewage pipe 59, the base 52 is fixed to the bottom end of the outer support frame 51, and extends to the inside of the fixed frame 10; the debris receiving plate 53 is connected to the outer support frame 51, and can extend into the inside of the cylinder body 31, and the position of the debris receiving plate 53 corresponds to the position of the backwashing mechanism 60; the pressurizing mechanism 54 is fixedly arranged on the debris receiving plate 53, and the pressurizing mechanism 54 is engaged with the gear ring 34; The rotation of the cylinder body 31 collects kinetic energy; the air tank 55 is fixedly mounted on the debris receiving tray 53, the air tank 55 is connected to the output end of the boost mechanism 54, and can form a positive pressure environment; at least one air supply pipe 56 is connected to the output end of the air tank 55, the air supply pipe 56 is arranged parallel to the axis of the cylinder body 31; the intercepting nozzle 57 is fixedly arranged on the pipe body of the air supply pipe 56, the intercepting nozzle 57 faces the filter screen, and its spraying action height is located between the backwashing mechanism 60 and the debris receiving tray 53, and it sprays from bottom to top; the sewage pipe 59 is connected to the outer support frame 51, and is communicated with the debris receiving tray 53 through the outer support frame 51.

[0043] In this example, it should be noted that the guide mechanism 50, on the one hand, realizes the effective collection and discharge of the dirt in the rotating drum 30, and on the other hand, aims to intercept the undetached dirt that flows downward along the filter screen after backwashing, so that this part of the dirt can also be efficiently collected; specifically, the base 52 is fixed to the bottom end of the outer support frame 51 and extends to the inside of the fixed frame 10, ensuring the stable support of the guide mechanism 50; the debris receiving plate 53 is arranged on the outer support frame 51, and can extend into the cylinder body 31 to correspond to the backwashing mechanism 60, and is used to receive the dirt washed down during the backwashing process; the booster mechanism 54 is meshed with the gear ring 34, and uses the rotational kinetic energy of the rotating drum 30 for energy collection, and uses this part of the energy to compress the air in the air storage tank 55 to form a positive pressure environment, In order to generate subsequent intercepted airflow; the air tank 55 is connected to the output end of the boosting mechanism 54 to store pressurized air; then, the air supply pipe 56 outputs compressed air from the air tank 55, and the air supply pipe 56 is arranged in parallel along the axis of the cylinder body 31 to ensure smooth transmission of the airflow; the interception nozzle 57 is installed on the air supply pipe 56, and sprays compressed air from bottom to top to intercept water flow and dirt to prevent dirt from re-attaching to the filter screen; the sewage pipe 59 is connected to the outer support frame 51 and is connected to the debris receiving plate 53, so as to quickly and conveniently discharge the collected dirt from the system; therefore, the present guiding mechanism 50 not only realizes the efficient collection and discharge of dirt, but also effectively avoids the re-accumulation of dirt on the filter screen through the positive pressure injection of compressed air, thereby ensuring the continuous filtering performance and cleaning effect of the equipment.

[0044] It is worth mentioning that the number of air supply pipes 56 can be one or more. When the number of branch pipes is one, it is preferably arranged at the end of the debris receiving plate 53 (taking the rotation direction of the rotating drum 30 as an example), so that the position of the filter screen that has just been backwashed can be intercepted by the intercepted airflow immediately, thereby achieving a better cleaning effect.

[0045] like Figure 7 As shown, in some examples, further, the bottom end of the debris receiving tray 53 is inclined and is provided with a water outlet, which is connected to the sewage pipe 59. Support rods 58 are also provided on both sides of the bottom end of the debris receiving tray 53, and the other end of the support rod 58 is telescopically connected to the outer support frame 51.

[0046] In this example, the bottom end of the debris receiving tray 53 is designed to be inclined, and its main function is to use gravity to help drain the collected dirt and avoid the dirt from being retained on the debris receiving tray 53; the water outlet of the debris receiving tray 53 is connected to the sewage pipe 59, ensuring that the sewage can be discharged from the debris receiving tray 53 in time, thereby maintaining a clean state; the support rods 58 on both sides of the bottom end of the debris receiving tray 53 play a role in stabilizing and supporting the debris receiving tray 53, and the support rods 58 can be telescopically connected to the outer support frame 51 to facilitate the adjustment of the entry depth of the debris receiving tray 53 according to different operational requirements. For example, a threaded nut structure is used on the support rod 58, and the connection position between the support rod 58 and the outer support frame 51 is flexibly adjusted through the nut structure to achieve this adjustment effect.

[0047] like Figure 1 and Figure 3 As shown, in some examples, further, the backwashing mechanism 60 includes: a spray main pipe 61, at least one spray branch pipe 62 and a plurality of spray heads 63, at least one spray branch pipe 62 is fixedly arranged on the top end of the outer cylinder 20, the spray main pipe 61 is connected to all the spray branch pipes 62, and is used to supply water to the spray branch pipes 62; the plurality of spray heads 63 are fixedly arranged below the spray branch pipes 62 and face the filter screen, so as to realize the backwashing of the filter screen.

[0048] In this example, the backwash mechanism 60 achieves efficient cleaning of the filter screen through the interaction of the spray main pipe 61, the spray branch pipe 62 and the spray head 63. Specifically, the spray main pipe 61 is responsible for evenly distributing the water supply to each spray branch pipe 62 to ensure that each branch pipe can obtain a stable water flow. The spray branch pipe 62 is fixed to the top of the outer cylinder 20 and can cover the entire area of ​​the filter screen. Multiple spray heads 63 are installed below the spray branch pipe 62, facing the filter screen, and directly flush impurities and dirt attached to the filter screen with strong water flow. When the water flow is sprayed out from the spray head 63, combined with the rotational movement of the filter screen, the entire filter screen surface is fully flushed to prevent impurities from accumulating in local areas, further improving the filtering effect.

[0049] like Figure 5 and Figure 6 As shown, in some examples, further, a plurality of limiting mechanisms 70 are provided on the fixing frame 10, and the limiting mechanisms 70 include: rollers and limiting strips 71, and the rollers are fixedly arranged at the front and rear sides of the two ends of the bottom of the rotating cylinder 30 in a group of two, and a limiting groove is opened in the middle of the roller; the limiting strip 71 is annular as a whole, fixedly arranged on the outer wall of the rotating cylinder 30, and clamped in the limiting groove.

[0050] In this example, it can be understood that the limiting mechanism 70 ensures the stable operation of the rotating drum 30 without deviation through the coordinated action of the rollers and the limiting strips 71; the rollers are arranged in pairs on the front and rear sides of the two ends of the bottom of the rotating drum 30, and each roller has a limiting groove in the middle, and the limiting strip 71 is fixed on the outer wall of the rotating drum 30 in a ring shape and tightly fits into the limiting groove; when the rotating drum 30 rotates under the drive of the power mechanism 40, the cooperation between the limiting strip 71 and the limiting groove can effectively prevent the rotating drum 30 from being deviated or unstable, ensuring that it always remains on the correct track during the filter cleaning and backwashing process; the rolling action of the rollers reduces the friction between the rotating drum 30 and the fixed frame 10, reduces the energy consumption of the equipment, and at the same time improves the smoothness and accuracy of the rotation; effectively prevents the rotating drum 30 from being deflected due to external forces or long-term operation, thereby improving the operating reliability of the entire device.

[0051] like Figure 8 As shown, in some examples, further, the boosting mechanism 54 includes: an air injection cylinder 541, a reciprocating screw 542, a piston 543, an air injection pipe 544, a one-way valve 545 and a gear 546, the air injection cylinder 541 is fixedly mounted on the receiving plate 53; the reciprocating screw 542 is rotatably arranged inside the air injection cylinder 541; the piston 543 is linearly movably sleeved on the outer wall of the reciprocating screw 542 through a screw nut; one end of the air injection pipe 544 is connected to the air injection cylinder 541 and communicated with the inner cavity of the air injection cylinder 541, and the other end of the air injection pipe 544 is connected to the air storage tank 55; the one-way valve 545 is fixedly arranged on the air injection pipe 544; the gear 546 is fixedly sleeved on the outer end of the reciprocating screw 542 and is located on the outer side of the air injection cylinder 541, and the gear 546 is meshed with the inner teeth of the ring gear 34.

[0052] In this example, the boosting mechanism 54 realizes the gas boosting and storage functions by means of the rotational power of the rotating cylinder 30; specifically, the gas injection cylinder 541 is fixed on the receiving plate 53, and a rotatable reciprocating screw 542 is installed inside, and the piston 543 is fixed to the outer wall of the screw by a screw nut. With the unidirectional rotation of the screw, the piston 543 can perform a linear reciprocating motion in the gas injection cylinder 541; when the rotating cylinder 30 rotates under the drive of the power mechanism 40, the gear 546 transmits the rotational kinetic energy to the reciprocating screw 542 through the teeth of the meshing gear ring 34, thereby driving the piston 543 to generate a compression motion in the gas injection cylinder 541; As the piston 543 moves, the gas is pressed into the gas injection pipe 544 and enters the gas storage tank 55 through the one-way valve 545; the function of the one-way valve 545 is to ensure that the gas can only enter the gas storage tank 55 in one direction, prevent reverse pressure relief, and thus maintain a positive pressure environment in the gas storage tank 55; the positive pressure environment provides power through the air supply pipe 56 to intercept the nozzle 57 from spraying dirt on the filter; through this pressurization process, the device can efficiently collect and utilize the kinetic energy of the rotating drum 30, continuously provide a stable air source pressure for the backwashing system, ensure the cleaning effect of the filter, and at the same time avoid debris from adhering to the filter again, thereby improving the working efficiency and filtering performance of the entire device.

[0053] The embodiment of the present application provides a method for applying a rotary filter screen of a water intake pump station in water conservancy irrigation in a second solution, and the rotary filter screen of the water intake pump station in the first aspect is applied, and specifically further includes the following steps:

[0054] When the water pump station is running, the outer cylinder 20 is fixed on the fixed frame 10, and the rotating cylinder 30 is rotated under the drive of the power mechanism 40. A filter screen is installed on the peripheral side of the rotating cylinder 30 to filter large particles of impurities in the water; as the rotating cylinder 30 rotates, water enters the rotating cylinder 30 through the filter screen, and the filtered water is discharged from the cylinder; the spiral propulsion piece 32 is installed on the inner wall of the filter screen, which can guide the large particles of impurities that are always at the bottom of the filter screen in a linear manner; when the filter screen needs to be cleaned, the backwashing mechanism 60 is started, and the spray device connected to the top of the outer cylinder 20 sprays water to the surface of the rotating cylinder 30 to remove the dirt attached to the filter screen; cleaning During the process, the guiding mechanism 50 penetrates into the upper half of the inner cavity of the rotating cylinder 30, collects the dirt backwashed and guides it out of the system to prevent the dirt from entering the filter again; with the assistance of pressurized and redirected airflow, the device further ensures that the filter is thoroughly cleaned; the air storage tank 55 is connected to the boosting mechanism 54, and the gas injection is achieved through the interaction between the air injection cylinder 541 and the reciprocating screw 542; the air flow passes through the air supply pipe 56 and is sprayed by the intercepting nozzle 57 to form an air flow and water flow from bottom to top, effectively intercepting the sewage along the spiral propulsion sheet 32 ​​or the filter upstream, avoiding the debris from adhering to the filter again, and ensuring the continuity of the filtering effect and the efficient operation of the device.

[0055] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A rotary filter screen for a water intake pump station, comprising a fixing frame (10), characterized in that: Also includes: An outer cylinder (20) is fixedly mounted on the fixing frame (10); A rotating cylinder (30) is rotatably arranged inside the outer cylinder (20), and a filter screen is arranged around the rotating cylinder (30); A power mechanism (40) is arranged on an outer wall of one side of the fixing frame (10), and the power mechanism (40) is connected to the rotating cylinder (30) and is used to drive the rotating cylinder (30) to rotate; a backwashing mechanism (60) connected to the top end of the outer cylinder (20), the backwashing mechanism (60) being used to backwash the rotating cylinder (30); The guide mechanism (50) is capable of penetrating into the upper half of the inner cavity of the rotating drum (30), and the guide mechanism (50) is used to collect dirt dropped from the rotating drum (30) during backwashing; The rotating drum (30) comprises a drum body (31), the filter screen is located on the drum body (31), and the rotating drum (30) further comprises: A plurality of spiral propulsion blades (32) are fixedly mounted on the inner wall of the filter screen and are used to guide out large particles of impurities that are always at the bottom of the filter screen in a linear manner; An outward extension piece (33) is fixedly disposed on the barrel body (31) at a side of the barrel body (31) away from the power mechanism (40); A gear ring (34) is fixedly mounted on an inner wall of an end portion of the barrel (31) close to the power mechanism (40); A water inlet (35) is arranged on the inner side of the gear ring (34); The guiding mechanism (50) comprises an outer support frame (51), and further comprises: A base (52) fixed to the bottom end of the outer support frame (51) and extending into the interior of the fixing frame (10); a debris receiving plate (53) connected to the outer support frame (51) and capable of extending into the interior of the cylinder body (31); the position of the debris receiving plate (53) corresponds to the position of the backwashing mechanism (60); A booster mechanism (54) is fixedly mounted on the debris receiving plate (53), and the booster mechanism (54) is meshed with the gear ring (34) to collect kinetic energy by means of the rotation of the barrel (31); An air storage tank (55) is fixedly mounted on the receiving plate (53), the air storage tank (55) being connected to an output end of the boosting mechanism (54) and capable of forming a positive pressure environment; At least one air supply pipe (56) connected to the output end of the air storage tank (55), the air supply pipe (56) being arranged parallel to the axis of the cylinder body (31); An intercepting nozzle (57) is fixedly mounted on the pipe body of the air supply pipe (56), the intercepting nozzle (57) is directed toward the filter screen, its spraying height is located between the backwashing mechanism (60) and the debris receiving plate (53), and sprays from bottom to top; A sewage pipe (59) connected to the outer support frame (51) and communicated with the debris receiving tray (53) via the outer support frame (51); The boosting mechanism (54) comprises: An air injection cylinder (541) is fixedly mounted on the impurity receiving plate (53); A reciprocating screw rod (542) rotatably disposed inside the gas injection cylinder (541); A piston (543) is sleeved on the outer wall of the reciprocating screw (542) so as to be linearly movable via a screw nut; An air injection pipe (544), one end of which is connected to the air injection cylinder (541) and communicates with the inner cavity of the air injection cylinder (541), and the other end of which is connected to the air storage tank (55); a one-way valve (545) fixedly disposed on the gas injection pipe (544); The gear (546) is fixedly sleeved on the outer end of the reciprocating screw rod (542) and is located outside the gas injection cylinder (541). The gear (546) is meshed with the inner teeth of the gear ring (34).

2. A rotary filter screen for a water intake pump station according to claim 1, characterized in that: The power mechanism (40) comprises: An external transmission wheel (41) is fixedly mounted on the outer side of the outer wall of the end of the barrel (31) and is located outside the water inlet (35); A driving motor (42) fixedly mounted on the fixing frame (10); A transmission assembly (43) having one end drivingly connected to the output end of the driving motor (42) and the other end drivingly connected to the outer driving wheel (41), wherein the transmission assembly (43) is used to transmit the power of the driving motor (42) to the barrel (31).

3. A rotary filter screen for a water intake pump station according to claim 1, characterized in that: The bottom end of the debris receiving tray (53) is inclined and is provided with a water outlet, the water outlet being connected to the sewage discharge pipe (59), and support rods (58) are provided on both sides of the bottom end of the debris receiving tray (53), the other end of the support rod (58) being telescopically connected to the outer support frame (51).

4. A rotary filter screen for a water intake pump station according to claim 1, characterized in that: The backwashing mechanism (60) comprises: At least one spray branch pipe (62) is fixedly mounted on the top end of the outer cylinder (20). A spray main pipe (61) connected to all the spray branch pipes (62) and used for supplying water to the spray branch pipes (62); A plurality of spray heads (63) are fixedly arranged below the spray branch pipe (62) and facing the filter screen, and are used to achieve backwashing of the filter screen.

5. The rotary filter screen for a water intake pump station according to claim 1, characterized in that: The fixing frame (10) is further provided with a plurality of limiting mechanisms (70), wherein the limiting mechanisms (70) include: A plurality of rollers, each two in a group, are fixedly arranged at the front and rear sides of both ends of the bottom of the rotating cylinder (30), and a limiting groove is provided in the middle of the rollers; The limiting strip (71) is annular in shape as a whole, is fixedly arranged on the outer wall of the rotating cylinder (30), and is clamped in the limiting groove.

6. A method for applying a rotary filter screen of a water intake pump station in water conservancy irrigation, characterized in that: The method of using the rotary filter screen of the water intake pump station as described in any one of claims 1 to 5 further comprises the following steps: When the water pump station is in operation, the outer cylinder (20) is fixed on the fixed frame (10), and the rotating cylinder (30) is driven by the power mechanism (40) to rotate. A filter screen is installed on the peripheral side of the rotating cylinder (30) to filter large particles of impurities in the water. As the rotating cylinder (30) rotates, water passes through the filter screen and enters the rotating cylinder (30), and the filtered water is discharged from the cylinder. When the filter screen needs to be cleaned, the backwashing mechanism (60) is activated to spray water onto the surface of the rotating drum (30) to remove dirt attached to the filter screen; during the cleaning process, the guiding mechanism (50) penetrates into the upper half of the inner cavity of the rotating drum (30) to collect the dirt backwashed and guide it out of the system to prevent the dirt from entering the filter screen again; With the assistance of the pressurized and redirected airflow of the guide mechanism (50), the device further cleans the filter thoroughly, intercepts the sewage flowing along the spiral propulsion blade (32) or the filter, and prevents debris from adhering to the filter again.

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