Filtering device for centrifugal pump

Abstract

The utility model discloses a centrifugal pump filtering device, which comprises two transverse boxes distributed up and down, two vertical frames distributed left and right are fixedly connected between the two transverse boxes, the opposite sides of the two transverse boxes are both provided with joints, the left and right sides of the vertical frames are both provided with strip-shaped boxes, and the strip-shaped boxes are fixedly connected with the transverse boxes. Strip-shaped holes are formed in the left side and the right side of the vertical frame, a filter screen with the two ends penetrating through the two strip-shaped holes and extending into the strip-shaped box on the same side is arranged in the vertical frame, and a supporting rod with the outer side abutting against the bottom of the filter screen is fixedly connected between the front inner wall and the rear inner wall of the strip-shaped box; a filter screen is arranged in the strip-shaped box, a screen rolling mechanism is arranged between one end of the filter screen and the inner side wall of the strip-shaped box, a screen brushing mechanism used for brushing impurities on the surface of the filter screen is arranged on the inner side wall of the strip-shaped box, and the two ends of the bottom of the transverse box communicate with first electric valves correspondingly. And the filter screen can be replaced and cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a filtering device for centrifugal pumps. Background Art

[0002] A centrifugal pump is a mechanical device that uses the rotation of an impeller to generate centrifugal force to transport liquids. It draws in liquid and accelerates it out through the high-speed rotation of the impeller, thereby achieving liquid transmission. Centrifugal pumps have the characteristics of simple structure, reliable operation, and a wide range of applications. They are commonly used in many fields such as water supply, drainage, chemical industry, and petroleum. They are commonly used fluid transport equipment in industrial production and daily life.

[0003] During the use of centrifugal pumps, filters are required. They are generally installed at the suction port of the pump or in the suction pipe. Their main purpose is to prevent impurities from entering the pump, which can prevent impurities from causing wear to the impeller, pump body and other components, thereby extending the service life of the pump. However, after a long period of filtration, as impurities continue to accumulate, the mesh of the filter will be clogged, which will affect the passage of the liquid and hinder the normal passage of the fluid, thereby causing the flow rate of the pump to decrease and affecting its normal use. In addition, new filters need to be replaced frequently, or the filters need to be disassembled for cleaning. However, the process of disassembly, replacement or cleaning will take time, causing the equipment to shut down, affecting the progress of related operations, and frequent disassembly and assembly may have a certain impact on the connection parts of the equipment, resulting in a reduction in the overall stability of the equipment.

[0004] Therefore, a centrifugal pump filter device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a filtering device for a centrifugal pump to solve the above problems.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A filtering device for a centrifugal pump comprises two horizontal boxes distributed up and down, two vertical frames distributed left and right are fixedly connected between the two horizontal boxes, joints are provided on the opposite sides of the two horizontal boxes, strip boxes are provided on the left and right sides of the vertical frames, strip holes are opened on the left and right sides of the vertical frames, filters are provided inside the vertical frames, two ends of which pass through the two strip holes respectively and extend to the inside of the strip boxes on the same side, a support rod is fixedly connected between the front and rear inner walls of the strip boxes, the outer side of which abuts against the bottom of the filter, a mesh rolling mechanism is provided between one end of the filter and the inner side wall of the strip box, a mesh brushing mechanism for brushing impurities on the surface of the filter is provided on the inner side wall of the strip box, and electric valves are connected to both ends of the bottom of the horizontal box.

[0008] Preferably, the joint comprises a ring disk, a connecting pipe and a mounting hole, and the opposite sides of the two horizontal boxes are connected with connecting pipes, and a ring disk is fixedly provided on one end of the connecting pipe away from the horizontal box, and a plurality of mounting holes are evenly arranged on the top of the ring disk.

[0009] Preferably, the mesh rolling mechanism includes a motor 1 and a winding roller. The front side of the strip box is provided with a motor 1 with an output shaft extending into the interior thereof. The output shaft of the motor 1 is coaxially connected with the front end of the winding roller and the rear side wall of the strip box. One end of the filter is connected to the curved surface of the winding roller and is wound on its surface.

[0010] Preferably, the screen brushing mechanism includes gears, roller brush 1, roller brush 2 and motor 2. The front side wall of the strip box is rotatably connected to roller brush 1 whose rear end extends to the rear thereof, and the outer side of roller brush 1 abuts against the top of the filter. The front side of the strip box is provided with motor 2 whose output shaft extends into the interior thereof, and the output shaft of motor 2 is coaxially connected to roller brush 2 whose rear end extends to the rear of the strip box, and the outer side of roller brush 2 abuts against the bottom of the filter. Gears are provided at one end of roller brush 1 and roller brush 2 that extend through the rear of the strip box, and the two gears are meshed with each other.

[0011] Preferably, two rolling rods distributed vertically are rotatably connected between the front and rear inner walls of the strip-shaped hole, and outer sides of the two rolling rods are respectively in contact with two sides of the filter screen.

[0012] Preferably, a second electric valve is provided on the rear side of the bar box.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the suction port of the pump and the pipeline are connected together through a joint, and during the operation of the centrifugal pump, by controlling the four electric valves, when the corresponding two electric valves are opened at the same time, the sucked liquid will pass through the filter screen on one side, and the impurities in the liquid will be filtered onto the filter screen, and when the other two corresponding electric valves are opened, the filter screen on the other side can be replaced for filtering without stopping the machine to replace the filter screen, and after a period of filtration on one side of the filter screen, impurities will be blocked at the same position of the filter screen. At this time, the two rolling net mechanisms connected to the two ends of the filter screen respectively roll up the filter screen and unroll the filter screen, so that the filter screen changes the filtering position to avoid blockage. At the same time, the brushing net mechanism can also brush the filter screen, thereby realizing the cleaning of impurities on the surface of the filter screen without stopping the machine to achieve the effect of repeated use, without disassembling the connecting parts of the equipment, thereby improving the overall stability of the equipment, and also preventing impurities from blocking the filtering position of the filter screen, so that the flow rate of the pump remains unchanged and is in a normal operating state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0017] Figure 3 It is a sectional view of the three-dimensional structure of the utility model;

[0018] Figure 4 This is a partial three-dimensional structure section of the utility model Figure 1 ;

[0019] Figure 5 This is a partial three-dimensional structure section of the utility model Figure 2 ;

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the filter screen and the screen rolling mechanism of the utility model.

[0021] In the attached drawings: 1. horizontal box; 2. vertical frame; 3. joint; 31. ring plate; 32. connecting pipe; 33. mounting hole; 4. strip box; 51. strip hole; 52. filter screen; 53. support rod; 6. net rolling mechanism; 61. motor 1; 62. winding roller; 7. net brushing mechanism; 71. gear; 72. roller brush 1; 73. roller brush 2; 74. motor 2; 8. electric valve 1; 9. rolling rod; 10. electric valve 2. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the utility model in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] 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.

[0025] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0026] In this embodiment, Figure 1-6 A filtering device for a centrifugal pump is provided. The utility model comprises two horizontal boxes 1 distributed up and down, two vertical frames 2 distributed left and right are fixedly connected between the two horizontal boxes 1, joints 3 are provided on the opposite sides of the two horizontal boxes 1, strip boxes 4 are provided on the left and right sides of the vertical frames 2, strip holes 51 are opened on the left and right sides of the vertical frames 2, and the interior of the vertical frames 2 is provided with filter screens 52 with two ends respectively passing through the two strip holes 51 and extending to the interior of the strip boxes 4 on the same side, a support rod 53 is fixedly connected between the front and rear inner walls of the strip boxes 4, a mesh rolling mechanism 6 is provided between one end of the filter screen 52 and the inner wall of the strip boxes 4, a mesh brushing mechanism 7 for brushing impurities on the surface of the filter screen 52 is provided on the inner wall of the strip boxes 4, and electric valves 8 are connected to both ends of the bottom of the horizontal box 1.

[0027] In this embodiment, the suction port of the pump and the pipeline are connected together through the joint 3. During the operation of the centrifugal pump, by controlling the four electric valves 8, when the corresponding two electric valves 8 are opened at the same time, the sucked liquid will pass through the filter screen 52 on one side, and the impurities in the liquid will be filtered onto the filter screen 52. When the other two corresponding electric valves 8 are opened, the filter screen 52 on the other side can be replaced for filtering without stopping the machine to replace the filter screen 52. After a period of filtration, the impurities on one side of the filter screen 52 will be blocked at the same position of the filter screen 52. At this time, the two rolling net mechanisms 6 connected to the two ends of the filter screen 52 respectively roll up the filter screen 52 and unroll the filter screen 52, so that the filter screen 52 changes the filtering position to avoid clogging. At the same time, the brushing net mechanism 7 can also brush the filter screen 52, so as to achieve the cleaning of impurities on the surface of the filter screen 52 without stopping the machine to achieve the effect of repeated use. There is no need to disassemble the connecting parts of the equipment, thereby improving the overall stability of the equipment, and it can also avoid impurities blocking the filtering position of the filter screen 52, so that the flow of the pump remains unchanged and is in a normal operating state.

[0028] Preferably, as another embodiment of the utility model, the joint 3 includes a ring disk 31, a connecting pipe 32 and a mounting hole 33, and the opposite sides of the two horizontal boxes 1 are connected with a connecting pipe 32, and the end of the connecting pipe 32 away from the horizontal box 1 is fixedly sleeved with a ring disk 31, and a plurality of mounting holes 33 are evenly arranged on the top of the ring disk 31.

[0029] In this embodiment, the plurality of mounting holes 33 on the ring disk 31 can be connected to the pump suction port or suction pipe in cooperation with fasteners, and the sucked liquid can be transported through the connecting pipe 32 .

[0030] Preferably, as another embodiment of the utility model, the net rolling mechanism 6 includes a motor 61 and a winding roller 62. The front side of the strip box 4 is provided with a motor 61 whose output shaft runs through the inside thereof. The output shaft of the motor 61 is coaxially connected with the winding roller 62 at the front end and the rear side wall of the strip box 4. One end of the filter screen 52 is connected to the curved surface of the winding roller 62 and is wound on its surface. The net brushing mechanism 7 includes a gear 71, a roller brush 1 72, a roller brush 2 73 and a motor 2 74. The front side wall of the strip box 4 is rotatably connected to the winding roller 62. There is a roller brush 72 with a rear end extending to the rear thereof, and the outer side of the roller brush 72 abuts against the top of the filter 52. The front side of the strip box 4 is provided with a motor 2 74 with an output shaft extending into the interior thereof. The output shaft of the motor 2 74 is coaxially connected with a roller brush 2 73 with a rear end extending to the rear of the strip box 4, and the outer side of the roller brush 2 73 abuts against the bottom of the filter 52. The roller brush 1 72 and the roller brush 2 73 extending to one end of the rear of the strip box 4 are both provided with gears 71, and the two gears 71 are meshed with each other.

[0031] When the filter screen 52 is wound up and unwound, the filter screen 52 will be shifted, thereby changing the filtering position of the filter screen 52 so that the filter screen 52 is in a normal filtering state. While changing the filter screen 52, the motor 2 74 can drive the roller brush 2 73 to rotate, and the gear 71 on the roller brush 2 73 will rotate accordingly. The gear 71 will transmit, i.e. mesh with, the gear 71 on the roller brush 1 72, thereby driving the roller brush 1 72 to rotate. The roller brush 1 72 and the roller brush 2 73 will brush the surface of the filter screen 52, thereby cleaning the impurities on the surface of the filter screen 52 without stopping the machine. At the same time, the motor 1 61 and the winding roller 62 cooperate to wind and unwind the filter screen 52, thereby changing the filtering position to achieve the effect of repeated use.

[0032] Preferably, as another embodiment of the utility model, two rolling rods 9 distributed up and down are rotatably connected between the front and rear inner walls of the strip hole 51, and the outer sides of the two rolling rods 9 are respectively abutted against the two sides of the filter 52, and an electric valve 2 10 is provided on the rear side of the strip box 4.

[0033] In this embodiment, the filter screen 52 that changes the filtering position will drive the rolling rod 9 to rotate, and the rolling rod 9 will support the filter screen 52 at the same time, so that the filter screen 52 remains in a stretched state. The stretched filter screen 52 can more effectively block impurities such as particulate matter, reduce the possibility of impurities bypassing or slipping through the gaps, and achieve more accurate filtration. At the same time, it can also prevent the impurities on the filter screen 52 from being scraped off by the inner wall of the strip hole 51. After the impurities on the filter screen 52 are brushed off, they will be concentrated on the strip box 4, and the brushed impurities can be discharged by opening the electric valve 2 10.

[0034] Working principle: The pump suction port and the pipeline can be connected together by cooperating with the ring disk 31, the connecting pipe 32 and the mounting hole 33 on both sides and the fasteners. During the operation of the centrifugal pump, by controlling the four electric valves 8, when the corresponding two electric valves 8 are opened at the same time, the sucked liquid will pass through the connecting pipe 32, the horizontal box 1 and the electric valve 8, and then pass through the filter screen 52 on one side, and the impurities in the liquid will be filtered out by the filter screen 52. When the other two corresponding electric valves 8 are opened, the filter screen 52 on the other side can be replaced for filtering without stopping the machine to replace the filter screen 52. After a period of filtration by the filter screen 52 on one side, the impurities will be blocked in the filter screen 52. At the same position of the filter 52, at this time, the forward and reverse rotation of the output shaft of the motor 1 61 can drive the winding roller 62 to reel in and unreel the filter 52, so that the two ends of the filter 52 are respectively reeled in and unreeled, thereby allowing the filter 52 to change the filtering position of the filter 52. At the same time, the motor 2 74 can drive the roller brush 2 73 to rotate, and through the transmission action of the two gears 71, drive the roller brush 1 72 to rotate as well, and the roller brush 1 72 and the roller brush 2 73 will brush the surface of the filter 52, thereby cleaning the impurities on the surface of the filter 52 without stopping the machine, and the impurities will remain in the strip box 4, and the impurities can be discharged by opening the electric valve 2 10 on the strip box 4.

[0035] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "certain embodiments", "illustrative embodiment", "example", "specific example", 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0036] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A filter device for a centrifugal pump, characterized in that: The invention comprises two horizontal boxes (1) arranged vertically, two vertical frames (2) arranged horizontally and leftwardly are fixedly connected between the two horizontal boxes (1), joints (3) are provided on opposite sides of the two horizontal boxes (1), strip boxes (4) are provided on the left and right sides of the vertical frames (2), strip holes (51) are provided on the left and right sides of the vertical frames (2), filters (52) are provided inside the vertical frames (2), two ends of which pass through the two strip holes (51) and extend to the inside of the strip boxes (4) on the same side, support rods (53) are fixedly connected between the front and rear inner walls of the strip boxes (4), the outer side of which abuts against the bottom of the filters (52), a net rolling mechanism (6) is provided between one end of the filters (52) and the inner side wall of the strip boxes (4), a net brushing mechanism (7) for brushing impurities on the surface of the filters (52) is provided on the inner side wall of the strip boxes (4), and electric valves (8) are connected to both ends of the bottom of the horizontal box (1).

2. A centrifugal pump filter device according to claim 1, characterized in that: The joint (3) comprises a ring disk (31), a connecting pipe (32) and mounting holes (33); the two opposite sides of the two transverse boxes (1) are both connected with a connecting pipe (32); one end of the connecting pipe (32) away from the transverse box (1) is fixedly sleeved with a ring disk (31); and a plurality of mounting holes (33) are evenly arranged on the top of the ring disk (31).

3. A centrifugal pump filter device according to claim 1, characterized in that: The mesh rolling mechanism (6) comprises a motor (61) and a winding roller (62); the front side of the strip box (4) is provided with a motor (61) whose output shaft extends into the interior thereof; the output shaft of the motor (61) is coaxially connected to the winding roller (62) whose front end is connected to the rear side wall of the strip box (4); one end of the filter screen (52) is connected to the curved surface of the winding roller (62) and is wound on its surface.

4. A centrifugal pump filter device according to claim 1, characterized in that: The screen brush mechanism (7) comprises a gear (71), a roller brush 1 (72), a roller brush 2 (73) and a motor 2 (74); the front side wall of the strip box (4) is rotatably connected to the roller brush 1 (72) whose rear end extends to the rear thereof; the outer side of the roller brush 1 (72) abuts against the top of the filter screen (52); the front side wall of the strip box (4) is provided with a motor 2 (74) whose output shaft extends into the interior thereof; the output shaft of the motor 2 (74) is coaxially connected to the roller brush 2 (73) whose rear end extends into the rear of the strip box (4); the outer side of the roller brush 2 (73) abuts against the bottom of the filter screen (52); the roller brush 1 (72) and the roller brush 2 (73) are both provided with gears (71) at one end extending to the rear of the strip box (4); the two gears (71) are meshed with each other.

5. A centrifugal pump filter device according to claim 1, characterized in that: Two rolling rods (9) distributed up and down are rotatably connected between the front and rear inner walls of the strip-shaped hole (51), and the outer sides of the two rolling rods (9) are respectively in contact with two sides of the filter screen (52).

6. A centrifugal pump filter device according to claim 1, characterized in that: A second electric valve (10) is provided on the rear side of the bar box (4).

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