Pump suction type multi-stage filtration desilting device

Abstract

The utility model discloses a pump suction type multistage filtration desilting device which comprises a barrel support, the barrel support is formed by connecting a first circular end plate support, a second circular end plate support and N groups of symmetric axial connecting rods into a whole, and the first circular end plate support and the second circular end plate support are respectively provided with a supporting cross rod in the radial direction. A pump water suction chamber is formed at the left end of the first filter cartridge, a first axial impeller is arranged on the radial circumference of the first filter cartridge, a second axial impeller is arranged on the right side of the first axial impeller, and a pump water suction channel is arranged on the side, away from the first axial impeller, of the second axial impeller. And a first backwashing assembly is arranged at the top of the second axial impeller. Compared with the prior art, the multi-stage filtration desilting device has the advantages that the multi-stage filtration desilting device not only can effectively improve the filtration precision of water quality through multi-stage filtration, but also can provide different flow requirements, and has a protection function of preventing foreign matters from damaging the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a pump-suction multi-stage filtering and sand-discharging device. Background Art

[0002] In agricultural irrigation production, the cost of using water resources is getting higher and higher. With the continuous expansion of the scale of agricultural water-saving facilities, agricultural irrigation technology is constantly innovating and improving. With the development trend of land intensification, refinement and efficiency, growers have increased their demand for refined and efficient management of crops. The demand for agricultural irrigation has changed from the previous labor-saving, time-saving and extensive water-saving to water-saving and precise water application, so that each crop can be evenly watered. From extensive large-flow to refined small-flow irrigation mode, the efficiency of water resource use can be maximized. The development of drip irrigation belts is also changing with each passing day. From maze-type drip irrigation belts to embedded patch-type drip irrigation belts, it has become a trend of use. The requirements for water cleanliness of drip irrigation belts are also higher. Drip irrigation uses surface water or groundwater with a large amount of impurities for irrigation, which is very easy to clog capillary tubes or sprinklers. It is one of the main reasons affecting the benefits of agricultural production.

[0003] At present, surface water is usually used directly after sedimentation in the sedimentation tank before the pump, or after filtering with a gravel filter or mesh filter after the pump, or after filtering with a motor-driven filter before the pump. Gravel filters or mesh filters are both used to discharge sand and sewage in the middle section after the pump, which increases the water resistance after the pump and increases the energy consumption of the pump body. The pipeline pressure is directly reduced during sewage discharge, and the risk of blockage of capillary tubes or sprays and drippers is intermittently increased. At the same time, gravel filters or mesh filters have the disadvantages of incomplete sewage discharge and low filtration rate. The motor-driven filter before the pump has certain requirements on the quality of the surface water used due to its constant speed and constant water permeability. Moreover, the patent document with publication number CN101402010A and the patent document with publication number CN104740925B disclose that the pre-pump water driven filter device adopts a cylindrical filter screen, and it is necessary to install a motor on the filter device to drive the filter screen to rotate. The cylindrical filter screen is a curved surface in the radial direction, with only an axial fixed point and no radial fixed point on the circumference. The filter screen is easily damaged and blocked under the action of radial tension and pulling force. Replacing the filter screen requires disassembling the entire filter screen for replacement, which is a cumbersome operation. The device needs to be connected to electricity when using the motor, which makes the device work with electricity, which poses a great production safety hazard and is also easily restricted by power supporting facilities. Due to the motor drive, the filter cartridge has a constant speed and a constant water filtration rate. If the turbidity of the water body is slightly large, it will cause insufficient water supply. At present, the filter cartridges of the pre-pump filter device are all single-layer filter screens, which cannot provide high-level water filtration accuracy requirements. In addition, the filter screen has no effective protection, and the filter screen is easily impacted by foreign objects, causing damage to the filter screen and affecting production efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pump-suction multi-stage filtering and sand removal device in view of the above problems.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a pump-suction multi-stage filtering and sand removing device, including a cylinder bracket, characterized in that: the cylinder bracket is connected as a whole by a first circular end plate bracket, a second circular end plate bracket and N groups of symmetrical axial connecting rods, the first circular end plate bracket and the second circular end plate bracket are respectively radially provided with supporting cross bars, a main shaft is concentrically arranged at the center of the cylinder bracket, and a plurality of polygonal first filter cartridges are sleeved on the main shaft, one end of the main shaft is connected to the first filter cartridge, and a pump suction water chamber is arranged between the other end and the first filter cartridge, a first axial impeller is concentrically sleeved between the pump suction water chamber and the first filter cartridge, a second axial impeller is arranged on the side of the first axial impeller close to the first filter cartridge, the outer edge of the second axial impeller is fixedly connected to the inner wall of the cylindrical pipe coaxially sleeved with the main shaft, the side of the second axial impeller away from the first axial impeller is a pump suction water channel, a first backwashing assembly is arranged on the top of the second axial impeller, the first backwashing assembly is fixedly connected to the main shaft through a connecting piece, and the first backwashing assembly is located inside the polygonal first filter cartridge.

[0006] As an improvement, a water divider is provided at the end axis core of the first filter cartridge away from the pump water suction chamber, and N second backwash components are arranged in a circular array on the water divider. The second backwash components are fixed to the outside of the first filter cartridge through connecting fixings and perform circular motion coaxially with the first filter cartridge.

[0007] As an improvement, the cylinder bracket is connected as a whole by a first circular end plate bracket, a second circular end plate bracket and an axial connecting rod. A filter screen is arranged on the radial end surfaces inside the first circular end plate bracket and the second circular end plate bracket of the cylinder bracket and the inner circumference formed by N groups of symmetrical axial connecting rods, thereby forming a second filter cartridge. A filter screen is arranged on the radial end surfaces outside the first circular end plate bracket and the second circular end plate bracket of the cylinder bracket and the outer circumference formed by N groups of symmetrical axial connecting rods, thereby forming a third filter cartridge.

[0008] As an improvement, the float is connected to the axial connecting rod of the cylinder bracket through a float connecting rod. The long axis of the float is perpendicular or parallel to the main shaft axis as required. The float is symmetrically arranged left and right or front and back relative to the first filter cartridge. The two ends of the long axis of the float are respectively connected to the pollution blocking plate through connecting plates. After the float and the pollution blocking plate are connected, a closed water surface is formed. The first filter cartridge, the second filter cartridge, and the third filter cartridge are all in it to prevent floating objects on the water surface from filtering the water surface.

[0009] The advantages of the utility model compared with the prior art are that the multi-stage filtering and sand removal device can effectively improve the filtering accuracy of water quality through multi-stage filtration, and at the same time can provide different flow requirements, and has the protective function of preventing foreign matter from damaging the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a structural schematic diagram of a pump-suction multi-stage filtering and sand removal device.

[0011] Figure 2 It is a schematic diagram of a filter cartridge of a pump-suction multi-stage filtering and sand removal device.

[0012] Figure 3 It is a schematic diagram of the overall structure of a pump-suction multi-stage filtering and sand removal device.

[0013] Figure 4 It is a schematic diagram of the side structure of a pump-suction multi-stage filtering and sand removal device.

[0014] Figure 5 It is a schematic diagram of the supporting structure of a pump-suction multi-stage filtering and sand removal device.

[0015] Figure 6 It is a schematic diagram of the AA section of a pump-suction multi-stage filtering and sand removal device.

[0016] As shown in the figure: 1. Cylinder bracket, 101. First circular end plate bracket, 102. Second circular end plate bracket, 103. Axial connecting rod, 104. Support cross bar, 105. Float connecting rod, 2. Main shaft, 3. Pump suction water chamber, 4. First axial impeller, 5. Second axial impeller, 6. Pump suction water channel, 7. First backwashing assembly, 8. Second backwashing assembly, 9. First filter cartridge, 10. Second filter cartridge, 11. Third filter cartridge, 12. Water distributor, 13. Float, 14. Connecting plate, 15. Trash retaining plate. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] In a specific implementation, the utility model is a pump-driven vibration frequency backwashing multi-stage filtering and sand removal device, comprising a cylinder bracket 1, which is connected as a whole by a first circular end plate bracket 101, a second circular end plate bracket 102 and N groups of symmetrical axial connecting rods 103, and the first circular end plate bracket 101 and the second circular end plate bracket 102 are radially provided with supporting cross bars 104 respectively. The cylinder bracket 1 is concentrically provided with a main shaft 2 and a polygonal first filter cartridge 9, the main shaft 2 includes a water pumping cylinder with an open left end and a closed right end and a water pumping port arranged at a certain section of the circumference, the left part of the water pumping cylinder is concentrically fixedly installed on the upper plane of the supporting cross bar 104 of the first circular end plate bracket 101 on the left part of the cylinder bracket 1, the right end of the water pumping cylinder is coaxially fixedly connected with the impeller shaft, the right part of the impeller shaft is concentrically fixedly installed on the upper plane of the supporting cross bar 104 of the second circular end plate bracket 102 on the right part of the cylinder bracket 1, the circumference of the water inlet of the water pumping cylinder is coaxially covered with a cylindrical pipe, the left end of the cylindrical pipe is coaxially rotatably installed on the outer circumference of the water pumping cylinder, the inner and outer end surfaces of the left end are symmetrically provided with water seals, water seal positioning rings and positioning parts, the right end is connected to the left end of the first filter end plate of the first filter cartridge 9, and after the connection, the left end of the first filter end plate forms a water pumping water chamber 3. The first filter end plate is rotatably mounted on the impeller shaft through the first bearing group. The first axial impeller 4 is arranged on the radial circumference of the first filter end plate. The second axial impeller 5 is arranged on the right side of the first axial impeller 4 along the impeller shaft and is rotatably mounted on the impeller shaft through the second bearing group. The outer edge of the second axial impeller 5 is fixedly connected to the inner wall of the cylindrical pipe coaxially mounted on the impeller shaft circumference, and the left end of the cylindrical pipe is connected to the right end face of the first filter end plate. After the connection, the cylindrical pipe on the right side of the first filter end plate is a pump suction water channel 6. A first backwash water flow outlet is arranged at a point in the radial direction of the impeller shaft on the right side of the second axial impeller 5. The first backwash water flow outlet in the radial direction of the impeller shaft to the end face of the axial right end of the impeller shaft is a backwash water channel with a hollow cross section, and the end face is provided with a first backwash water flow inlet. The first backwash water flow outlet is connected to the first backwash component 7, and the first backwash component 7 is fixedly connected to the impeller shaft through a connector, and the first backwash component 7 is located inside the polygonal first filter cartridge 9. The second filter end plate of the polygonal first filter cartridge 9 is rotatably mounted at a point on the right end of the impeller shaft through the third bearing group. The first filter end plate and the second filter end plate are both provided with water-permeable and water-filtering holes on their radial circumferences, and the first filter end plate and the second filter end plate are connected as a whole through the end plate connector. A filter screen is provided between the end plate connectors, thereby forming a closed polygonal first filter cartridge 9. The polygonal first filter cartridge 9 performs circular motion with the axis of the main shaft 2 as the center. Since the circumference of the first filter cartridge 9 is set as a polygon, the fluid generates vibration frequency inside the filter cartridge, which improves the water permeability while preventing foreign matter from clogging the filter screen.

[0019] The fixed axis circumferential rotating water separator 12 is coaxially fixedly installed at one point on the axial direction of the impeller shaft 2 on the right side of the second filtering end plate 902. A second backwash water inlet is arranged on the end surface of the water separator 12, and N second backwash water outlets are arranged on the rotating circumference of the water separator 12. The second backwash water outlet is connected to the second backwash component 8. The second backwash component 8 is fixed to the outside of the first filter cartridge 9 through a connecting fixture. It moves coaxially with the first filter cartridge 9 in a circular motion.

[0020] The cylinder support 1 is connected as a whole by a first circular end plate support 101, a second circular end plate support 102 and an axial connecting rod 103. A filter screen is arranged on the radial end surface of the first circular end plate support 101 and the second circular end plate support 102 of the cylinder support 1 and the inner circumference formed by N groups of symmetrical axial connecting rods 103, thereby forming a second filter cartridge 10. A filter screen is arranged on the radial end surface of the first circular end plate support 101 and the second circular end plate support 102 of the cylinder support 1 and the outer circumference formed by N groups of symmetrical axial connecting rods 103, thereby forming a third filter cartridge 11.

[0021] The buoy 13 is connected to the axial connecting rod 103 of the cylinder support 1 through the buoy connecting rod 105. The long axis of the buoy 13 is perpendicular or parallel to the main axis as required. The buoy 13 is symmetrically arranged left and right or front and back relative to the first filter cartridge 9. The two ends of the long axis of the buoy 13 are respectively connected to the dirt blocking plate 15 through the connecting piece 14. After the buoy 13 and the dirt blocking plate 15 are connected, a closed water surface is formed, in which the first filter cartridge 9, the second filter cartridge 10, and the third filter cartridge 11 are all located, preventing floating objects on the water surface from filtering the water surface.

[0022] The working principle of the utility model is as follows: the device is placed in a pump water source, the device body is in a water layer at a certain depth of the water surface by utilizing the buoyancy of the float, the water pump inlet is connected to the pump water cylinder, and the first and second backwash water flow inlets are connected to the backwash water source after the pump. Start the water pump, the water flows into the first filter cartridge through the third and second filter cartridges in turn, flows through the water channel and the axial impeller into the pump water chamber, and the water pump draws water from the pump water cylinder into the pipeline after the pump. The water flow drives the axial impeller to rotate and drives the first filter cartridge to make a circular motion with the main axis as the center of the circle. The static pressure water flow after the pump enters the first and second backwashing components respectively, and is sprayed out by the nozzle or nozzle to wash the inner circumference and end surface filter screen of the filter cartridge. The first backwashing component is located inside the first filter cartridge for a static use environment, and the first filter cartridge performs a rotating motion for a dynamic use environment. The first backwashing component washes the inner wall of the first filter cartridge for a set of backwashing. The second backwashing component is fixed to the outside of the first filter cartridge. It performs a coaxial circular motion with the first filter cartridge for a dynamic use environment. The second and third filter cartridges are actually the inner and outer walls of the cylinder bracket, which are static use environments. The second backwash assembly is fixed on the outside of the first filter cartridge. The second filter cartridge is flushed in a circular motion coaxially with the first filter cartridge, which is another set of backwashing. During the operation of the device, the water first passes through the third filter cartridge on the outside of the cylinder bracket for the first-stage filtration of the device, the water passes through the second filter cartridge on the inside of the cylinder bracket for the second-stage filtration of the device, and the water passes through the first filter cartridge for the third-stage filtration of the device. The filtration levels can be superimposed by adding a water divider according to the use requirements.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A pump-suction multi-stage filtering and sand removal device, comprising a cylinder support (1), characterized in that: The cylinder support (1) is connected as a whole by a first circular end plate support (101), a second circular end plate support (102) and N groups of symmetrical axial connecting rods (103); the first circular end plate support (101) and the second circular end plate support (102) are respectively provided with supporting cross bars (104) in a radial direction; a main shaft (2) is concentrically provided at the center of the cylinder support (1); a plurality of polygonal first filter cartridges (9) are sleeved on the main shaft (2); one end of the main shaft (2) is connected to the first filter cartridge (9); a pump water suction chamber (3) is provided between the other end and the first filter cartridge (9); the pump water suction chamber (3) is connected to the first filter cartridge (9); A first axial impeller (4) is sleeved concentrically between a filter cartridge (9), a second axial impeller (5) is provided on the side of the first axial impeller (4) close to the first filter cartridge (9), the outer edge of the second axial impeller (5) is fixedly connected to the inner wall of a cylindrical pipe coaxially sleeved on the main shaft (2), the side of the second axial impeller (5) away from the first axial impeller (4) is a pump suction water channel (6), a first backwashing assembly (7) is provided on the top of the second axial impeller (5), the first backwashing assembly (7) is fixedly connected to the main shaft (2) through a connecting piece, and the first backwashing assembly (7) is located inside the polygonal first filter cartridge (9).

2. A pump-suction multi-stage filtering and sand removal device according to claim 1, characterized in that: A water distributor (12) is provided at the end of the first filter cartridge (9) away from the pump water suction chamber (3), and N second backwashing components (8) are arranged in a circular array on the water distributor (12). The second backwashing components (8) are fixed to the outside of the first filter cartridge (9) through a connecting fixture and perform circular motion coaxially with the first filter cartridge (9).

3. A pump-suction multi-stage filtering and sand removal device according to claim 1, characterized in that: The cylinder support (1) is connected as a whole by a first circular end plate support (101), a second circular end plate support (102) and an axial connecting rod (103); a filter screen is arranged on the radial end surfaces inside the first circular end plate support (101) and the second circular end plate support (102) of the cylinder support (1) and an inner circumference formed by N groups of symmetrical axial connecting rods (103), thereby forming a second filter cartridge (10); a filter screen is arranged on the radial end surfaces outside the first circular end plate support (101) and the second circular end plate support (102) of the cylinder support (1) and an outer circumference formed by N groups of symmetrical axial connecting rods (103), thereby forming a third filter cartridge (11).

4. A pump-suction multi-stage filtering and sand removal device according to claim 1, characterized in that: The float (13) is connected to the axial connecting rod (103) of the cylinder support (1) through a float connecting rod (105). The long axis of the float (13) is perpendicular or parallel to the main shaft axis as required. The float (13) is symmetrically arranged left and right or front and back relative to the first filter cartridge (9). The two ends of the long axis of the float (13) are respectively connected to the dirt blocking plate (15) through a connecting piece (14). After the float (13) and the dirt blocking plate (15) are connected, a closed water surface is formed. The first filter cartridge (9), the second filter cartridge (10) and the third filter cartridge (11) are all located therein to prevent floating objects on the water surface from filtering the water surface.

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