Pipeline connecting device for centrifugal pump

Abstract

The utility model discloses a pipeline connecting device for a centrifugal pump, which comprises a cylinder body, a limiting ring is arranged on the inner side wall of the cylinder body, a pipeline extending upwards is arranged in the cylinder body, connecting rings are arranged on the outer curved surfaces of the two ends of the pipeline, the bottom of the lower connecting ring abuts against the top of the limiting ring, and the limiting ring is arranged on the inner side wall of the cylinder body. A quick dismounting mechanism for limiting and fixing the lower connecting ring is arranged on the cylinder body, a flange connecting piece is arranged at the bottom of the cylinder body, and a sealing piece is arranged between the limiting ring and the lower connecting ring; the quick dismounting mechanism comprises a concave frame, a first annular plate, a sleeve rod, a spring, a check block, a connecting plate, a sliding hole, a traction rod, a concave block and a second annular plate, the first annular plate fixedly sleeves the outer side of the barrel, and the second annular plate located above the first annular plate sleeves the barrel. The device has the advantage of quickly disassembling the pipeline.

Description

Technical Field

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

[0002] The centrifugal pump is a widely used fluid conveying machinery with a long history of background technology and plays an important role in the industrial field. It uses the rotation of the impeller to generate centrifugal force to achieve the suction and discharge of liquids. After continuous development, the centrifugal pump technology has become increasingly mature. It has the advantages of simple structure, reliable operation, and convenient flow regulation. It is widely used in many industries such as petrochemical, water treatment, and agriculture, providing efficient and reliable solutions for various fluid conveying needs.

[0003] Whether before or after use, the centrifugal pump needs to have its fasteners disassembled and assembled, so as to connect or disconnect the water inlet and outlet of the centrifugal pump with the pipeline; however, during this disassembly and assembly, tools are needed to disassemble and tighten the fasteners one by one, which is a relatively time-consuming and labor-intensive process, and it is impossible to achieve rapid disassembly and assembly of the pipeline, resulting in a slow connection speed.

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

[0005] The utility model aims to provide a pipeline connecting 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 pipeline connection device for a centrifugal pump comprises a cylinder, an inner side wall of the cylinder is provided with a limiting ring, an interior of the cylinder is provided with a pipeline extending upward, outer curved surfaces at both ends of the pipeline are provided with connecting rings, the bottom of the connecting ring below abuts against the top of the limiting ring, a quick disassembly mechanism for limiting and fixing the connecting ring below is provided on the cylinder, a flange connecting piece is provided at the bottom of the cylinder, and a sealing piece is provided between the limiting ring and the connecting ring below.

[0008] Preferably, the quick-disassembly mechanism includes a concave frame, a first annular plate, a sleeve rod, a spring, a stopper, a connecting plate, a sliding hole, a pulling rod, a concave block, and a second annular plate. The first annular plate is fixedly sleeved on the outer side of the cylinder body. The second annular plate is sleeved on the cylinder body above the first annular plate. A plurality of sleeve rods passing through the second annular plate are arranged around the top of the first annular plate. A connecting plate is arranged between the upper end of the sleeve rod and the outer side of the cylinder body. A spring with both ends connected to the outer sides of the first annular plate and the second annular plate is sleeved on the sleeve rod. A plurality of concave frames are arranged around the outer side of the cylinder body above the second annular plate. A concave block with its bottom fixedly connected to the top of the second annular plate is arranged inside the concave frame. Sliding holes in an inclined state are formed on both sides of the concave block. A stopper penetrating into the inside of the cylinder body and with its bottom abutting against the top of the lower connecting ring is arranged inside the concave block. Pulling rods respectively extending into the sliding holes on both sides are arranged on both sides of the stopper.

[0009] Preferably, the flange connecting member includes a connecting pipe, an annular disc, and a through hole. The connecting pipe communicates with the bottom of the cylinder body. The outer curved surface of the connecting pipe is provided with an annular disc. A plurality of through holes are formed around the top of the annular disc.

[0010] Preferably, the sealing member includes a sealing groove and a sealing ring. Sealing grooves are formed on the opposite sides of the limiting ring and the lower connecting ring. A sealing ring is arranged between the two sealing grooves.

[0011] Preferably, a plurality of connecting holes are formed around the top of the lower connecting ring. A plurality of clamping columns respectively extending into the plurality of connecting holes are arranged on the top of the limiting ring.

[0012] Preferably, a filter screen is arranged on the inner side wall of the cylinder body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The water inlet or outlet of the centrifugal pump can be connected together through the flange connecting member. After the pipeline and the connecting ring are inserted into the cylinder body, the inserted connecting ring will be limited by the limiting ring. At this time, the inserted connecting ring can be limited by the quick-disassembly mechanism, and cooperate with the limiting ring to achieve a clamping effect, so as to quickly connect the pipeline with the cylinder body. After the limit on the inserted connecting ring is released, the pipeline and the connecting ring can be taken out to achieve the effect of quick disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings further illustrate the present utility model, but the content in the drawings does not constitute any limitation to the present utility model.

[0015] Figure 1 is a sectional view of the three-dimensional structure of the present utility model;

[0016] Figure 2It is the first angle of the three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 3 It is the second angle of the three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 4 It is the three-dimensional structure schematic diagram of the quick disassembly mechanism of the present utility model;

[0019] Figure 5 It is the exploded view of the stop block, concave block and concave frame of the present utility model;

[0020] Figure 6 It is the exploded view of the limit ring and connecting ring of the present utility model.

[0021] In the attached drawings: 1, cylinder body; 2, limit ring; 3, connecting ring; 4, pipeline; 5, quick disassembly mechanism; 50, concave frame; 51, first annular plate; 52, sleeve rod; 53, spring; 54, stop block; 55, connecting plate; 56, sliding hole; 57, pulling rod; 58, concave block; 59, second annular plate; 6, flange connecting piece; 61, connecting pipe; 62, annular disc; 63, through hole; 7, seal; 71, seal groove; 72, sealing ring; 81, connecting hole; 82, clamping column; 9, filter screen. Specific Embodiments

[0022] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the attached drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the attached drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present 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 should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This 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 present 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, it is given by Figure 1-6 A pipeline connection device for a centrifugal pump. The present utility model includes a cylinder body 1. A limiting ring 2 is provided on the inner side wall of the cylinder body 1. A pipeline 4 extending upward is provided inside the cylinder body 1. Connecting rings 3 are provided on the outer curved surfaces at both ends of the pipeline 4. The bottom of the lower connecting ring 3 abuts against the top of the limiting ring 2. A quick-disassembly mechanism 5 for limiting and fixing the lower connecting ring 3 is provided on the cylinder body 1. A flange connector 6 is provided at the bottom of the cylinder body 1. A sealing member 7 is provided between the limiting ring 2 and the lower connecting ring 3.

[0027] In this embodiment, the inlet or outlet of the centrifugal pump can be connected together through the flange connector 6. After the pipeline 4 and the connecting ring 3 are inserted into the cylinder body 1, the inserted connecting ring 3 will be limited by the limiting ring 2. At this time, the inserted connecting ring 3 can be limited by the quick-disassembly mechanism 5, and cooperate with the limiting ring 2 to achieve a clamping effect, so as to quickly connect the pipeline 4 with the cylinder body 1. After the limit on the inserted connecting ring 3 is released, the pipeline 4 and the connecting ring 3 can be taken out to achieve the effect of quick disassembly.

[0028] Preferably, as another embodiment of the present invention, the quick-disassembly mechanism 5 includes a concave frame 50, a first annular plate 51, a sleeve rod 52, a spring 53, a stopper 54, a connecting plate 55, a sliding hole 56, a pulling rod 57, a concave block 58 and a second annular plate 59. The first annular plate 51 is fixedly sleeved on the outer side of the cylinder body 1, and the second annular plate 59 is sleeved on the cylinder body 1 above the first annular plate 51. A plurality of sleeve rods 52 penetrating through the second annular plate 59 are arranged around the top of the first annular plate 51. A connecting plate 55 is arranged between the upper end of the sleeve rod 52 and the outer side of the cylinder body 1. A spring 53 with both ends connected to the outer sides of the first annular plate 51 and the second annular plate 59 is sleeved on the sleeve rod 52. A plurality of concave frames 50 are arranged around the outer side of the cylinder body 1 above the second annular plate 59. A concave block 58 with the bottom fixedly connected to the top of the second annular plate 59 is arranged inside the concave frame 50. Sliding holes 56 in an inclined state are formed on both sides of the concave block 58. A stopper 54 penetrating into the inside of the cylinder body 1 and with the bottom abutting against the top of the lower connecting ring 3 is arranged inside the concave block 58. Pulling rods 57 respectively extending into the sliding holes 56 on both sides are arranged on both sides of the stopper 54.

[0029] In this embodiment, when the stopper 54 extends into the cylinder body 1, it can cooperate with the limiting ring 2 to limit the inserted connecting ring 3, so as to connect the pipeline 4 on the connecting ring 3 with the cylinder body 1 and achieve the effect of quick connection. When the second annular plate 59 is pulled, it will slide along the sleeve rod 52 and compress the spring 53. At the same time, it will drive the concave block 58 to slide inside the concave frame 50. During this process, the sliding holes 56 on the concave block 58 can drive the stopper 54 and the pulling rods 57 to move along the inner wall, so that the stopper 54 is displaced from the connecting ring 3 to release the limit on the inserted connecting ring 3. At this time, the pipeline 4 and the connecting ring 3 can be taken out to achieve the effect of quick disassembly.

[0030] Preferably, as another embodiment of the present invention, the flange connector 6 includes a connecting pipe 61, an annular disc 62 and a through hole 63. The bottom of the cylinder body 1 is communicated with a connecting pipe 61. An annular disc 62 is arranged on the outer curved surface of the connecting pipe 61. A plurality of through holes 63 are arranged around the top of the annular disc 62.

[0031] In this embodiment, the through holes 63 on the annular disc 62 can be connected to the water inlet or outlet of the centrifugal pump by means of fasteners, and the conveyed liquid can pass through the connecting pipe 61.

[0032] Preferably, as another embodiment of the present utility model, the seal 7 includes a seal groove 71 and a sealing ring 72. Seal grooves 71 are provided on the opposite sides of the limiting ring 2 and the lower connecting ring 3, and a sealing ring 72 is provided between the two seal grooves 71.

[0033] In this embodiment, the seal grooves 71 on the limiting ring 2 and the lower connecting ring 3 can install the sealing ring 72 to play a sealing role, effectively preventing liquid leakage, maintaining the tightness of the system, and ensuring the normal operation of the equipment.

[0034] Preferably, as another embodiment of the present utility model, a plurality of connection holes 81 are circumferentially provided at the top of the lower connecting ring 3, and a plurality of clamping posts 82 that extend into the plurality of connection holes 81 one by one are provided at the top of the limiting ring 2.

[0035] In this embodiment, during the process of the lower connecting ring 3 entering the cylinder body 1, it will abut against the limiting ring 2, and the plurality of clamping posts 82 on the limiting ring 2 will correspond to the plurality of connection holes 81 one by one and enter the inside of the connection holes 81, thereby limiting and positioning the lower connecting ring 3 and preventing the lower connecting ring 3 from rotating.

[0036] Preferably, as another embodiment of the present utility model, a filter screen 9 is provided on the inner side wall of the cylinder body 1.

[0037] In this embodiment, the filter screen 9 can prevent solid particles, sundries, etc. in the water from entering the water pump, avoiding abrasion, blockage or damage to the internal components of the water pump.

[0038] Working principle: The through holes 63 on the annular disc 62 can be connected to the water inlet or outlet of the centrifugal pump by means of fasteners to convey liquid through the connecting pipe 61. When the stop block 54 extends into the cylinder body 1, it can cooperate with the limiting ring 2 to limit the inserted connecting ring 3, thereby connecting the pipe 4 on the connecting ring 3 to the cylinder body 1 and achieving a quick connection effect. When the annular plate two 59 is pulled, it will slide along the sleeve rod 52 and compress the spring 53. At the same time, it will drive the concave block 58 to slide inside the concave frame 50. During this process, the sliding hole 56 on the concave block 58 can drive the stop block 54 and the pulling rod 57 to move along the inner wall, so that the stop block 54 is displaced from the connecting ring 3 to release the limit on the inserted connecting ring 3. At this time, the pipe 4 and the connecting ring 3 can be taken out to achieve a quick disassembly effect.

[0039] In the description of this specification, the descriptions with reference to terms such as "embodiment", "an implementation manner", "certain implementation manners", "schematic implementation manners", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the said implementation manner or example are included in at least one implementation manner or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0040] The technical principle of the present utility model has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present utility model and cannot be construed in any way as a limitation on the protection scope of the present utility model. Based on the explanations herein, those skilled in the art can think of other specific implementation manners of the present utility model without creative efforts, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pipe connection device for a centrifugal pump, characterized in that: The invention comprises a cylinder (1), wherein the inner side wall of the cylinder (1) is provided with a limiting ring (2), the interior of the cylinder (1) is provided with a pipe (4) extending upward, the outer curved surfaces at both ends of the pipe (4) are provided with connecting rings (3), the bottom of the lower connecting ring (3) abuts against the top of the limiting ring (2), the cylinder (1) is provided with a quick disassembly mechanism (5) for limiting and fixing the lower connecting ring (3), the bottom of the cylinder (1) is provided with a flange connecting piece (6), and a sealing piece (7) is provided between the limiting ring (2) and the lower connecting ring (3); The quick disassembly mechanism (5) comprises a concave frame (50), an annular plate 1 (51), a sleeve rod (52), a spring (53), a stopper (54), a connecting plate (55), a sliding hole (56), a pulling rod (57), a concave block (58) and an annular plate 2 (59). The outer side of the cylinder (1) is fixedly sleeved with an annular plate 1 (51). The cylinder (1) is sleeved with an annular plate 2 (59) located above the annular plate 1 (51). A plurality of sleeve rods (52) are arranged around the top of the annular plate 1 (51) and pass through the annular plate 2 (59). A connecting plate (55) is arranged between the upper end of the sleeve rod (52) and the outer side of the cylinder (1). The sleeve rod (52) is sleeved with two ends and the sleeve rods. A spring (53) is connected to the outer side of the annular plate 1 (51) and the outer side of the annular plate 2 (59); a plurality of concave frames (50) are arranged around the outer side of the cylinder (1) and are located above the annular plate 2 (59); a concave block (58) is arranged inside the concave frame (50) and is fixedly connected to the top of the annular plate 2 (59) at the bottom; both sides of the concave block (58) are provided with inclined sliding holes (56); a stopper (54) is arranged inside the concave block (58) and passes through the inside of the cylinder (1) and the bottom of the stopper abuts against the top of the connecting ring (3) below; both sides of the stopper (54) are provided with pull rods (57) extending to the inside of the sliding holes (56) on both sides.

2. A pipe connection device for a centrifugal pump according to claim 1, characterized in that: The flange connection piece (6) comprises a connection pipe (61), an annular disk (62) and through holes (63); the bottom of the cylinder (1) is connected to the connection pipe (61); the outer curved surface of the connection pipe (61) is provided with an annular disk (62); and a plurality of through holes (63) are formed around the top of the annular disk (62).

3. A pipe connection device for a centrifugal pump according to claim 1, characterized in that: The sealing member (7) comprises a sealing groove (71) and a sealing ring (72); the sealing groove (71) is provided on opposite sides of the limiting ring (2) and the connecting ring (3) below; and a sealing ring (72) is provided between the two sealing grooves (71).

4. A pipe connection device for a centrifugal pump according to claim 1, characterized in that: A plurality of connection holes (81) are formed around the top of the lower connection ring (3), and a plurality of clamping columns (82) are formed on the top of the limiting ring (2) and extend one by one into the interior of the plurality of connection holes (81).

5. A pipe connection device for a centrifugal pump according to claim 1, characterized in that: The inner side wall of the cylinder (1) is provided with a filter screen (9).

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