Diversion pump

Abstract

The invention belongs to the technical field of water pumps, and particularly relates to a flow guide pump which comprises a front cover, a rear cover and a flow guide plate. The rear shell is provided with a second runner surface, and a runner is defined by the second runner surface and the first runner surface; the water inlet pipe is arranged on the front cover, is coaxial with the central axis of the front cover and is communicated with the flow channel; the water outlet pipe is arranged on the front cover, perpendicular to the central axis of the front cover and communicated with the flow channel, and the section of the flow channel is gradually increased from the end away from the water outlet pipe to the end close to the water outlet pipe; the impeller is used for introducing water in the water inlet pipe into the flow channel and pumping the water in the flow channel out of the water outlet pipe; the silencing wall is located in the front cover and arranged around the periphery of the first flow channel face, the interior of the silencing wall is hollow, a plurality of reinforcing ribs are arranged in the silencing wall at intervals, and the interior of the silencing wall is separated by the reinforcing ribs to form a plurality of silencing cavities. Noise can be effectively absorbed and reduced, turbulent flow is reduced, and the operation efficiency of the pump is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water pumps, and in particular relates to a diversion pump. Background Art

[0002] Diversion pumps are widely used in industry, especially in sewage treatment, irrigation, waterway control and other fields. The working principle of the diversion pump mainly depends on the impeller and diversion structure inside it. When the motor drives the impeller to rotate, the liquid is sucked into the pump body, and obtains energy under the action of the impeller, and then is transported to the desired location along the diversion structure. Specifically, the diversion pump uses centrifugal force to suck the medium from the inlet pipe into the pump body, and then rotates the medium out along the diversion cylinder under the action of the high-speed rotating impeller to achieve the purpose of transportation or circulation.

[0003] The flow diversion structure of the existing diversion pump is relatively thin, and when the liquid is sucked into the pump body, a large noise will be generated, and the shell of the existing diversion pump cannot effectively isolate the noise. Summary of the invention

[0004] The purpose of the present invention is to provide a diversion pump, aiming to solve the technical problem of the diversion pump in the prior art having high noise during operation.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a diversion pump, comprising: a front cover, in which a first flow path surface extending along a spiral trajectory is provided; a rear shell, which is buckled and docked with the front cover, and the rear shell is provided with a second flow path surface, when the front cover and the rear shell are buckled with each other, the second flow path surface and the first flow path surface enclose a flow path; an inlet pipe, which is arranged on the front cover, is coaxially arranged with the central axis of the front cover and is connected with the flow path; and an outlet pipe, which is arranged on the front cover, is perpendicular to the central axis of the front cover. The front cover is vertically arranged and connected with the flow channel, and the cross-section of the flow channel gradually increases from the end away from the water outlet pipe to the end close to the water outlet pipe; the impeller is rotatably arranged in the front shell, and is used to introduce the water in the water inlet pipe into the flow channel, and pump the water in the flow channel out of the water outlet pipe; the soundproofing wall is located in the front cover and is arranged around the periphery of the first flow channel surface, the soundproofing wall is hollow and has a plurality of reinforcing ribs arranged at intervals, and the plurality of reinforcing ribs separate the interior of the soundproofing wall and form a plurality of soundproofing chambers.

[0006] Optionally, the spiral center of the first flow channel surface is eccentrically arranged relative to the center of the front cover, and the second flow channel surface is annular and coaxially arranged with the central axis of the front cover.

[0007] Optionally, a limiting protrusion is provided on the rear shell, and a limiting groove is provided on the front cover, and the limiting protrusion can cooperate with the limiting groove when the front cover and the rear shell are buckled with each other, and the limiting groove can limit the rotation of the rear shell in one direction around the axis of the rear shell.

[0008] Optionally, the limiting groove is formed by the bottom surface of the front cover, the side wall of the front cover and the end surface of one end of the sound-absorbing wall.

[0009] Optionally, a limiting rib is protruding from the edge of the second flow channel surface, and the limiting rib smoothly transitions to the second flow channel surface at one end close to the limiting protrusion, and the other end of the limiting rib presses against the other end of the sound-absorbing wall when the front cover and the rear shell are buckled with each other, and the other end of the limiting rib can limit the rotation of the rear shell in another direction around the axis of the rear shell.

[0010] Optionally, the side surface of the limiting protrusion facing the flow channel and the side wall of the muffler wall facing the flow channel have a smooth transition and extend along the same spiral trajectory.

[0011] Optionally, the second flow channel surface includes a plane area and a curved surface area, the curved surface area corresponds to an end of the first flow channel surface close to the water outlet pipe, and when the front cover and the rear shell are buckled together, the flow channel enclosed by the curved surface area and the first flow channel surface has a smooth transition with the inner hole of the water outlet pipe.

[0012] Optionally, an edge of a cross section of the flow channel enclosed by the arc surface area and the first flow channel surface is arc-shaped.

[0013] Optionally, the cross-section of the inner hole of the water outlet pipe is elliptical.

[0014] Optionally, the edge of the rear shell is provided with a first step surface along its circumference, and the edge of the front cover is provided with a second step surface along its circumference, and the first step surface and the second step surface cooperate with each other to ensure that the front cover and the rear shell are coaxially arranged.

[0015] Compared with the prior art, the above one or more technical solutions in a diversion pump provided by an embodiment of the present invention have at least one of the following technical effects: the diversion pump in the present invention, because a sound-absorbing wall structure is arranged in the front cover, can effectively absorb and reduce noise during operation, thereby achieving the purpose of significant noise reduction. Specifically, the interior of the sound-absorbing wall is a hollow structure, and is provided with a plurality of reinforcing ribs, which are arranged at intervals and separate the interior of the sound-absorbing wall into a plurality of sound-absorbing chambers. The sound-absorbing chamber can block the propagation of some noise, and the reinforcing ribs can ensure the support strength of the sound-absorbing wall structure and the stability of the overall structure of the diversion pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction;

[0020] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0021] Figure 5 It is a schematic structural diagram of the rear shell in the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the front cover in the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the limiting protrusion and the limiting groove in the present invention under the matching state.

[0024] Among them, the reference numerals in the figure are:

[0025] The front cover 100, the first flow channel surface 110, the muffler wall 120, the reinforcing rib 121, the muffler chamber 122, the limiting groove 130, and the second step surface 140;

[0026] The rear housing 200, the second flow channel surface 210, the plane area 211, the arc surface area 212, the limiting ribs 213, the limiting protrusions 220, and the first step surface 230;

[0027] Runner 300;

[0028] Water inlet pipe 400;

[0029] Water outlet pipe 500;

[0030] Impeller 600. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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, 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 embodiments of the present invention can be understood according to specific circumstances.

[0035] like Figures 1 to 7 As shown, the present invention discloses a diversion pump, including a front cover 100 , a rear shell 200 , a water inlet pipe 400 , a water outlet pipe 500 , an impeller 600 and a soundproofing wall 120 .

[0036] The front cover 100 is provided with a first flow channel surface 110 extending along a spiral trajectory. The rear shell 200 and the front cover 100 are buckled and docked with each other. The rear shell 200 is provided with a second flow channel surface 210. When the front cover 100 and the rear shell 200 are buckled with each other, the second flow channel surface 210 and the first flow channel surface 110 enclose a flow channel 300. The water inlet pipe 400 is provided on the front cover 100, is coaxially arranged with the central axis of the front cover 100 and is connected with the flow channel 300. The water outlet pipe 500 is provided on the front cover 100, is perpendicularly arranged with the central axis of the front cover 100 and is connected with the flow channel 300. The two water inlets 400 and the water inlet 400 are connected, and the cross-section of the flow channel 300 gradually increases from the end away from the water outlet pipe 500 to the end close to the water outlet pipe 500. The impeller 600 is rotatably arranged in the front shell 100 to introduce the water in the water inlet pipe 400 into the flow channel 300 and pump the water in the flow channel 300 out of the water outlet pipe 500. The silencer wall 120 is located in the front cover 100 and is arranged around the periphery of the first flow channel surface 110. The silencer wall 120 is hollow and has a plurality of reinforcing ribs 121 arranged at intervals. The plurality of reinforcing ribs 121 separate the interior of the silencer wall 120 and form a plurality of silencer chambers 122.

[0037] It can be understood that the diversion pump in the present invention can effectively absorb and reduce noise during operation, thereby achieving the purpose of significant noise reduction, because the sound-absorbing wall 120 structure is provided in the front cover 100. Specifically, the interior of the sound-absorbing wall 120 is a hollow structure, and is provided with a plurality of reinforcing ribs 121, which are arranged at intervals and separate the interior of the sound-absorbing wall 120 into a plurality of sound-absorbing chambers 122. The sound-absorbing chambers 122 can block the propagation of some noise, and the reinforcing ribs 121 can ensure the support strength of the sound-absorbing wall 120 structure and the stability of the overall structure of the diversion pump.

[0038] In addition, the cross section of the flow channel 300 is designed to gradually increase from the end away from the water outlet pipe 500 to the end close to the water outlet pipe 500, which can ensure that the fluid can smoothly transition in the flow channel and reduce resistance loss. Figure 2 and Figure 7 In the figure, the direction of each arrow is a schematic diagram of the flow path of the fluid entering the flow channel 300.

[0039] It should be noted that, according to the principles of fluid mechanics, the first flow channel surface 110 in the present invention is designed to extend in a spiral trajectory, which can ensure that the fluid can form a stable flow field before entering the outlet pipe, reducing eddy currents and impact losses. The above spiral trajectory is a plane spiral trajectory, which means that in a plane polar coordinate system, if the polar diameter ρ increases (or decreases) proportionally with the increase of the polar angle θ, the trajectory formed by such a moving point is a plane spiral trajectory.

[0040] like Figure 2 and Figure 4As shown, in one embodiment of the present invention, the spiral center of the first flow channel surface 110 is eccentrically arranged relative to the center of the front cover 100 to form a first flow channel surface 110 from narrow to wide inside the front cover 100, and the second flow channel surface 210 is annular and is coaxially arranged with the central axis of the front cover 100 so that the front cover 100 and the rear shell 200 can be coaxially installed. It should be noted that the width of the second flow channel surface 210 can be set to be greater than or equal to the maximum width of the first flow channel surface 110, so that the first flow channel surface 110 and the second flow channel surface 210 can enclose a flow channel 300 with a gradually increasing cross-sectional width. It can be understood that the area of ​​the second flow channel surface 210 corresponding to the first flow channel surface 110 in the width direction can be used to enclose the flow channel 300 together with the first flow channel surface 110 and the inner side surface of the silencer wall 120, and the area of ​​the second flow channel surface 210 not corresponding to the first flow channel surface 110 in the width direction can be used to cover the silencer wall 120 to block the silencer chamber 122 in the silencer wall 120.

[0041] Reference Figures 5 to 7 In one embodiment of the present invention, a limiting protrusion 220 is provided on the rear shell 200, and a limiting groove 130 is provided on the front cover 100. The limiting protrusion 220 can cooperate with the limiting groove 130 when the front cover 100 and the rear shell 200 are buckled with each other. The limiting groove 130 can limit the rotation of the rear shell 200 in one direction around the axis of the rear shell 200, thereby realizing the determination of the relative position of the rear shell 200 and the front cover 100 when they are buckled with each other, preventing the assembler from installing the rear shell 200 out of position.

[0042] Specifically, Figure 6 As shown, in one embodiment of the present invention, the limiting groove 130 is formed by the bottom surface of the front cover 100, the side wall of the front cover 100 and the end surface of one end of the sound-absorbing wall 120. During installation, the rear shell 200 is buckled with the front cover 100, and the limiting protrusion 220 is pressed against one end of the above-mentioned sound-absorbing wall 120.

[0043] Furthermore, if Figure 5 and Figure 7As shown, in one embodiment of the present invention, a section of limiting rib 213 is protruded from the edge of the second flow channel surface 210, and the limiting rib 213 smoothly transitions with the second flow channel surface 210 at one end close to the limiting protrusion 220, and the inner side surface of the limiting rib 213 is used to cooperate with the second flow channel surface 210 to form a curved surface area 212. The other end of the limiting rib 213 abuts against the other end of the muffler wall 120 when the front cover 100 and the rear shell 200 are buckled with each other, and the other end of the limiting rib 213 can limit the rotation of the rear shell 200 in another direction around the axis of the rear shell 200. In summary, after the rear shell 200 is buckled with the front cover 100, the head and tail ends of the muffler wall 120 cooperate with the limiting rib 213 and the limiting protrusion 220, so that the relative position of the rear shell 200 and the front cover 100 can be quickly determined, which can avoid the assembly workers from installing misaligned.

[0044] It should be noted that the end-to-end structure of the silencer wall 120, the limiting rib 213 and the limiting protrusion 220 can perfectly fit together to form the pump body flow channel structure. The close fit between the front cover 100 and the rear shell 200 not only helps to reduce the vibration and noise during the operation of the pump body, but also reduces the friction between the components, plays a role in reducing the failure rate and improving the overall stability. The two-part flow channel structure can not only play a fool-proof role during assembly, but also facilitate disassembly, making it convenient to clean the inside of the pump body during maintenance and overhaul, and maintain the hygiene and performance of the equipment.

[0045] like Figure 7 As shown, in one embodiment of the present invention, the side of the limiting protrusion 220 facing the flow channel 300 and the side wall of the silencer wall 120 facing the flow channel 300 have a smooth transition and extend along the same spiral trajectory, that is, the side of the flow channel 300 can be formed by combining the silencer wall 120 and the limiting protrusion 220. The flow channel is enclosed by the existing structure, which can simplify the structure and reduce the volume of the diversion pump.

[0046] like Figure 5 As shown, in one embodiment of the present invention, the second flow channel surface 210 includes a plane area 211 and a curved area 212, and the curved area 212 corresponds to one end of the first flow channel surface 110 close to the water outlet pipe 500. When the front cover 100 and the rear shell 200 are buckled with each other, the flow channel 300 enclosed by the curved area 212 and the first flow channel surface 110 and the inner hole of the water outlet pipe 500 are smoothly transitioned. By setting the inner diameters of the flow channel 300 and the water outlet pipe 500 at the mutually docking position to be consistent, it is possible to prevent gas from accumulating in the eccentric reducer, thereby preventing gas from entering the diversion pump to cause cavitation, and preventing the performance of the diversion pump from being reduced or even damaged.

[0047] Furthermore, if Figure 4As shown, in one embodiment of the present invention, the edge of the cross section of the flow channel 300 enclosed by the curved surface area 212 and the first flow channel surface 110 is curved, and the curved cross section of the flow channel 300 facilitates a smooth transition with the inner surface of the outlet pipe 500 .

[0048] In one embodiment of the present invention, the cross section of the inner hole of the water outlet pipe 500 is elliptical. The cross-sectional area of ​​the elliptical inner hole is larger than that of a circular inner hole with the same circumference, which allows water to flow through the pipe more smoothly, thereby improving the drainage capacity, and its pressure resistance is also stronger than that of a circular inner hole.

[0049] In one embodiment of the present invention, a first step surface 230 is provided at the edge of the rear shell 200 along its circumference, and a second step surface 140 is provided at the edge of the front cover 100 along its circumference. The first step surface 230 and the second step surface 140 cooperate with each other to ensure that the front cover 100 and the rear shell 200 are coaxially arranged.

[0050] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A diversion pump, characterized in that: include: A front cover, internally provided with a first flow channel surface extending along a spiral track; A rear shell is buckled and docked with the front cover, and the rear shell is provided with a second flow channel surface. When the front cover and the rear shell are buckled with each other, the second flow channel surface and the first flow channel surface enclose a flow channel; A water inlet pipe is arranged on the front cover, is coaxially arranged with the central axis of the front cover and is connected with the flow channel; A water outlet pipe is arranged on the front cover, is arranged perpendicular to the central axis of the front cover and is connected to the flow channel, and the cross section of the flow channel gradually increases from an end away from the water outlet pipe to an end close to the water outlet pipe; An impeller rotatably disposed in the front housing to introduce water in the water inlet pipe into the flow channel and pump the water in the flow channel out through the water outlet pipe; The sound-absorbing wall is located in the front cover and is arranged around the periphery of the first flow channel surface. The sound-absorbing wall is hollow and has a plurality of reinforcing ribs arranged at intervals. The plurality of reinforcing ribs separate the interior of the sound-absorbing wall and form a plurality of sound-absorbing chambers.

2. The diversion pump according to claim 1, characterized in that: The spiral center of the first flow channel surface is eccentrically arranged relative to the center of the front cover, and the second flow channel surface is annular and coaxially arranged with the central axis of the front cover.

3. The diversion pump according to claim 1, characterized in that: A limiting protrusion is provided on the rear shell, and a limiting groove is provided on the front cover. The limiting protrusion can cooperate with the limiting groove when the front cover and the rear shell are buckled with each other, and the limiting groove can limit the rotation of the rear shell in one direction around the axis of the rear shell.

4. The diversion pump according to claim 3, characterized in that: The limiting groove is formed by the bottom surface of the front cover, the side wall of the front cover and the end surface of one end of the sound-absorbing wall.

5. The diversion pump according to claim 3, characterized in that: A limiting rib is protruding from the edge of the second flow channel surface, and the limiting rib smoothly transitions to the second flow channel surface at one end close to the limiting protrusion, and the other end of the limiting rib presses against the other end of the sound-absorbing wall when the front cover and the rear shell are buckled with each other, and the other end of the limiting rib can limit the rotation of the rear shell in another direction around the axis of the rear shell.

6. The diversion pump according to claim 3, characterized in that: The side surface of the limiting protrusion facing the flow channel and the side wall of the muffler wall facing the flow channel have a smooth transition and extend along the same spiral track.

7. The diversion pump according to claim 3, characterized in that: The second flow channel surface includes a plane area and a curved area, the curved area corresponds to an end of the first flow channel surface close to the water outlet pipe, and when the front cover and the rear shell are buckled together, the flow channel enclosed by the curved area and the first flow channel surface has a smooth transition with the inner hole of the water outlet pipe.

8. The diversion pump according to claim 7, characterized in that: The edge of the cross section of the flow channel enclosed by the arc surface area and the first flow channel surface is arc-shaped.

9. The flow diversion pump according to any one of claims 1 to 8, characterized in that: The cross section of the inner hole of the water outlet pipe is elliptical.

10. The diversion pump according to any one of claims 1 to 8, characterized in that: The edge of the rear shell is provided with a first step surface along its circumference, and the edge of the front cover is provided with a second step surface along its circumference. The first step surface and the second step surface cooperate with each other to ensure that the front cover and the rear shell are coaxially arranged.

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