A pump with a spoiler partition member

Abstract

The present invention provides a pump with a flow disturbing partition member, which includes a pump body and a flow disturbing partition member arranged inside the pump body. The inner wall of the pump body extends inward to form a step. The first end face of the step is at a first preset distance L1 from the second end face of the pump body, and the second end face is in mating connection with the motor base; the flow disturbing partition member includes a cover plate, which is welded to the pump body and / or the step; a central cavity, which is arranged on the other side of the cover plate and is coaxially arranged with the pump body; a baffle plate, which is arranged outside the central cavity and is located at the water inlet of the pump body, and the water flow at the water inlet on the pump body impacts the baffle plate to remove the large air bubbles in the water flow; openings are arranged on the outer side wall of the central cavity, and the small air bubbles in the water flow are broken up by the openings; the air bubbles in the water flow are collected and discharged by a gas collection cavity assembly arranged at the highest position of the pump body.

Description

Technical Field

[0001] The present invention belongs to the technical field of pumps, and in particular relates to a pump with a flow disturbing partition member. Background Art

[0002] The interior of the pump body of the existing canned motor pump is a cavity or has a simple structure inside. After the water flow enters the pump body cavity, the water flow directly enters the suction port of the impeller from the cylindrical wearing ring. At this time, the water flow may be mixed with a certain amount of air, causing cavitation of the pump, affecting the service life and performance of the pump. In addition, the pump will generate noise during operation. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a pump with a flow disturbing partition member.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The present invention provides a pump with a flow disturbing partition member, including a pump body and a flow disturbing partition member arranged inside the pump body. A step is formed by the inner wall of the pump body extending inwards. Along the direction of the central axis of the pump body, the first end face of the step is at a first preset distance L from the second end face of the pump body 1 , and the second end face is cooperatively connected with the motor base;

[0006] The flow disturbing partition member includes:

[0007] A cover plate, one side of which is pressed against the step and welded to the pump body and / or the step;

[0008] A central cavity, which is arranged on the other side of the cover plate and is coaxially arranged with the pump body;

[0009] A baffle, which is arranged outside the central cavity and at the water inlet of the pump body. The water flow at the water inlet of the pump body impacts the baffle to remove the large air bubbles in the water flow;

[0010] An opening is arranged on the outer side wall of the central cavity. When the water flow enters the central cavity, the small air bubbles in the water flow are scattered by the opening;

[0011] The air bubbles in the water flow are collected and discharged by the gas collection cavity assembly in the pump body, and the gas collection cavity assembly is arranged at the highest position of the pump body.

[0012] Preferably, the step on the inner wall of the pump body is arranged along the circumferential direction of the inner wall of the pump body.

[0013] Preferably, a first positioning structure is provided on the side of the cover plate in contact with the step, and a second positioning structure cooperating with the first positioning structure is provided on the step.

[0014] Preferably, the first positioning structure is a protrusion, the second positioning structure is a groove, and the protrusions are circularly distributed on the cover plate.

[0015] Preferably, a third positioning structure is provided on the cover plate, and a fourth positioning structure is provided on the step or the pump body. The third positioning structure cooperates with the fourth positioning structure to prevent the cover plate from rotating circumferentially.

[0016] Preferably, a first notch is provided on the cover plate, and a second notch is provided on the step. The first notch cooperates with the second notch.

[0017] Preferably, the central cavity is a cylinder, the opening is a long strip, the length of the opening is arranged along the axial direction of the cylinder, and the openings are evenly distributed along the circumferential direction of the cylinder;

[0018] The baffle is located outside the cylinder and is spaced apart by a second preset distance.

[0019] Preferably, an arc-shaped notch is provided on the cylinder, and the baffle is arranged at the arc-shaped notch.

[0020] Preferably, the baffle is an arc-shaped plate, the arc-shaped plate surrounds the outer periphery of part of the central cavity, the arc-shaped notch is directly opposite to the inner side of the arc-shaped plate, and the water flow at the water inlet impacts the outer side of the arc-shaped plate.

[0021] Preferably, the baffle includes an intermediate impact plate and arc-shaped plates symmetrically arranged on both sides of the intermediate impact plate. The inner side of the intermediate impact plate is directly opposite to the arc-shaped notch, the outer side of the intermediate impact plate is directly opposite to the water inlet, and the arc-shaped plates surround the outer side of the central cavity.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, a step is provided on the inner wall of the pump body, and the cover plate is welded to the step to fix the cover plate inside the pump body. A central cavity and a baffle are provided on the cover plate. The baffle is located at the water inlet. The water flow at the water inlet impacts the baffle to disperse the water flow, and the large air bubbles in the water flow will be collected and discharged by the gas collection cavity assembly in the pump body. The water flow after passing through the baffle contains a small amount of small air bubbles. Since the baffle is located outside the central cavity, the water flow continues to enter and exit the central cavity through the opening, and the small air bubbles in the water flow will be further broken up, and the gas enters the gas collection cavity assembly in the pump body and is discharged outside the pump body through the gas collection cavity assembly.

[0024] By providing the above structure at the water inlet of the pump body, it is possible to effectively reduce the gas entering the impeller suction port, reduce the probability of cavitation of the pump, improve the performance of the pump, reduce the noise, and increase the service life of the pump. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the pump body and the gas collection cavity assembly in the present invention;

[0026] Figure 2 It is a schematic internal structure diagram of the pump with a flow disturbing partition member in the present invention;

[0027] Figure 3 In the present invention Figure 2 The enlarged structure diagram at I in;

[0028] Figure 4 It is a front view of the pump with a flow disturbing partition member in the present invention;

[0029] Figure 5 It is a schematic structural diagram of the pump with a flow disturbing partition member in the present invention;

[0030] Figure 6 It is a schematic structural diagram of the flow disturbing partition member at the first angle in the present invention;

[0031] Figure 7 It is a front view of the flow disturbing partition member in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the flow disturbing partition member at the second angle in the present invention.

[0033] Among them, 100, water inlet; 1, pump body; 10, step; 11, second notch; 2, cover plate; 21, protrusion; 23, first notch; 3, central cavity; 31, opening; 32, arc-shaped notch; 4, baffle; 41, intermediate impact plate; 42, arc plate; 5, gas collection cavity assembly. Detailed Embodiments

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "arranged" and "connected" 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include 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 additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

[0040] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0041] Since there is no cover plate or only a simple cover plate structure in the existing pump body, and the water flow directly enters the impeller suction port through the cylindrical wearing ring, more gas will be mixed in the water flow, and a lot of gas will also be generated in the pump body, resulting in cavitation of the water pump, leading to a decline in the performance of the water pump, generating noise, and ultimately affecting the service life of the water pump.

[0042] To solve the above problems, as Figures 1-8 shown, in this embodiment, a pump with a flow disturbing partition member is provided, including a pump body 1 and a flow disturbing partition member disposed inside the pump body 1. Among them, as Figure 1 shown, Figure 1 is a schematic structural diagram of the pump body 1 and the gas collection cavity assembly 5. The figure shows a step 10 provided inside the pump body 1. The inner wall of the pump body 1 extends inward to form the step 10. In the direction of the central axis of the pump body 1, the first end surface of the step 10 is at a first preset distance L from the second end surface of the pump body 1 1 , and the second end surface is in mating connection with the motor base.

[0043] As Figure 2 , Figures 6-8As shown in the figure, the spoiler baffle member includes a cover plate 2, a central cavity 3, and a baffle 4. One side of the cover plate 2 is pressed against the step 10 and welded to the pump body 1 and / or the step. The central cavity 3 is provided on the other side of the cover plate 2, and the central cavity 3 is coaxially arranged with the pump body 1. The baffle 4 is provided outside the central cavity 3 and is located at the water inlet 100 of the pump body 1. The water flow at the water inlet 100 of the pump body 1 impacts the baffle 4 to remove large air bubbles in the water flow. An opening 31 is provided on the outer side wall of the central cavity 3, and the water flow enters the central cavity 3, and the small air bubbles in the water flow are scattered by the opening 31. The air bubbles in the water flow are collected and discharged by the gas collection cavity assembly 5 in the pump body 1, and the gas collection cavity assembly 5 is arranged at the highest position of the pump body 1.

[0044] In this embodiment, a step 10 is provided on the inner wall of the pump body 1, and the cover plate 2 is welded to the step 10 to fix the cover plate 2 inside the pump body 1. The cover plate 2 is provided with a central cavity 3 and a baffle 4. The baffle 4 is located at the water inlet 100, and the water flow at the water inlet 100 impacts the baffle 4 to disperse the water flow, and the large air bubbles in the water flow will be collected and discharged by the gas collection cavity assembly 5 in the pump body 1. The water flow after passing through the baffle 4 contains a small amount of small air bubbles. Since the baffle 4 is located outside the central cavity 3, the water flow continues to enter and exit the central cavity 3 through the opening 31, and the small air bubbles in the water flow will be further scattered, and the gas enters the gas collection cavity assembly 5 in the pump body 1 and is discharged outside the pump body 1 through the gas collection cavity assembly 5.

[0045] In this embodiment, by arranging the above structure at the water inlet 100 of the pump body 1, it is possible to effectively reduce the gas entering the impeller suction port, remove most of the air bubbles in the water flow, reduce the probability of cavitation of the pump caused by the gas in the water flow, improve the performance of the pump, reduce the noise, and increase the service life of the pump.

[0046] The above gas collection cavity assembly 5 is a patented structure, and the technical improvement in this application does not lie in this, so it will not be elaborated here.

[0047] Regarding the structure of the step 10 provided on the inner wall of the above pump body 1, in this embodiment, the step 10 is as Figure 1 shown, and the end face of the step 10 is at a first preset distance L from the end face of the pump body 1 1 , and the end face of the pump body 1 is cooperatively connected with the motor base. The range value of the first preset distance L 1 is 25 mm - 35 mm. This is to reserve an axial movement amount for the impeller and rotor assembly installed inside the pump body 1 to prevent the impeller and rotor assembly from being stuck during operation.

[0048] Preferably, in this embodiment, the pump is a canned motor pump, and the above first preset distance L 1 is 25 mm.

[0049] In addition, in this embodiment, the step 10 provided on the inner wall of the pump body 1 is circular in shape, and the step 10 on the inner wall of the pump body 1 is circularly arranged along the circumferential direction of the pump body 1.

[0050] In other embodiments, there can be multiple steps 10, and the multiple steps 10 are arranged along the circumferential direction of the inner wall of the pump body 1. Preferably, the multiple steps 10 are evenly distributed along the circumferential direction of the inner wall of the pump body 1.

[0051] Preferably, a first positioning structure is provided on the side of the cover plate 2 in contact with the step 10, and a second positioning structure is provided on the step 10 to cooperate with the first positioning structure.

[0052] Specifically, a protrusion 21 is provided on the side of the cover plate 2 in contact with the step 10, and a groove cooperating with the protrusion 21 is provided on the step 10.

[0053] A protrusion 21 is provided on one side of the cover plate 2, and correspondingly, a groove is provided on the step 10. The protrusion 21 cooperates with the groove to position the cover plate 2. Specifically, the cross-section of the protrusion 21 is one of a triangle, a circular arc, and a semi-circle. In addition, the protrusion 21 on the cover plate 2 is a circle. In other embodiments, the protrusion 21 can also be multiple circles.

[0054] Preferably, the protrusions 21 are circularly distributed on the cover plate 2, so that the protrusions 21 are in close contact with the cover plate 2, facilitating the welding of the two.

[0055] Regarding the specific structures of the first positioning structure and the second positioning structure, there can also be multiple dot protrusions 21 provided on one side of the cover plate 2, and multiple circular grooves cooperating with the dot protrusions 21 are provided at corresponding positions on the step 10 to axially position the cover plate 2, facilitating the welding of the cover plate 2.

[0056] In other embodiments, the first positioning structure can also be a positioning post, and the second positioning structure is a positioning hole, and the positioning post is inserted into the positioning hole for cooperation.

[0057] In other embodiments, the cover plate 2 can also be axially and circumferentially positioned by the arrangement positions of the above-mentioned second positioning structure and the second positioning structure.

[0058] Preferably, a third positioning structure is provided on the cover plate 2, and a fourth positioning structure is provided on the step 10 or the pump body 1, and the third positioning structure cooperates with the fourth positioning structure.

[0059] In the above-mentioned embodiment, a protrusion 21 is provided on the side of the cover plate 2 in contact with the step 10, and a groove cooperating with the protrusion 21 is provided on the step 10.

[0060] The cover plate 2 is provided with a protrusion 21 and a groove for positioning, which can only position the axial position of the cover plate 2 and cannot position the circumferential position of the cover plate 2. Therefore, a third positioning structure is provided on the cover plate 2, and a fourth positioning structure is provided on the step 10 or the pump body 1. The third positioning structure and the fourth positioning structure cooperate to prevent the cover plate 2 from rotating circumferentially.

[0061] Preferably, in this embodiment, the fourth positioning structure is provided on the step 10.

[0062] Further preferably, a first notch 23 is provided on the cover plate 2, and a second notch 11 is provided on the step 10. The first notch 23 cooperates with the second notch 11.

[0063] The first notch 23 on the cover plate 2 is a plane, and the second notch 11 opened on the step 10 is a plane. The two planes cooperate to prevent the cover plate 2 from rotating circumferentially, facilitating installation positioning and subsequent welding of the cover plate 2 and the pump body 1.

[0064] Preferably, the central cavity 3 is a cylinder, the opening 31 is arranged along the axial direction of the cylinder, the openings 31 are evenly distributed along the circumferential direction of the cylinder, the baffle 4 is located outside the cylinder and is spaced apart by a second preset distance.

[0065] In this embodiment, the central cavity 3 is a cylinder and is coaxially arranged with the cover plate 2. An opening 31 is provided in the circumferential direction of the central cavity 3. The opening 31 is a through hole with a length arranged along the axial direction of the cylinder, and the through hole communicates with the inside of the central cavity 3. The baffle 4 is located outside the cylinder, and the two are spaced apart by a second preset distance, so that the water flow at the water inlet 100 impacts the baffle 4 first and then enters the central cavity 3. The opening 31 provided on the central cavity 3 is a grid-like structure.

[0066] Preferably, to increase the space between the baffle 4 and the central cavity 3 and increase the water flow around the central cavity 3 to facilitate water flow, an arc-shaped notch 32 is provided on the cylinder, and the baffle 4 is arranged at the arc-shaped notch 32.

[0067] Preferably, the baffle 4 is an arc-shaped plate, and the arc-shaped plate surrounds the outer periphery of a part of the central cavity 3. The arc-shaped notch 32 is directly opposite to the inner side of the arc-shaped plate, and the water flow at the water inlet 100 impacts the outer side of the arc-shaped plate.

[0068] The baffle 4 is arranged as an arc-shaped plate. When the water flow impacts the arc-shaped plate, the large air bubbles in the water flow are dispersed due to the impact and are also guided by the arc-shaped plate to the central cavity 3 after impacting the arc-shaped plate.

[0069] The arc of the above-mentioned arc-shaped plate is determined according to actual needs.

[0070] Preferably, the baffle 4 includes an intermediate impact plate 41 and arc plates 42 symmetrically arranged on both sides of the intermediate impact plate 41. The inner side of the intermediate impact plate 41 is directly opposite to the circular arc-shaped notch 32, and the outer side of the intermediate impact plate 41 is directly opposite to the water inlet 100. The arc plates 42 surround the outside of the central cavity 3.

[0071] The water flow impacts the intermediate impact plate 41 to disperse the water flow. Large air bubbles overflow from the water and are collected by the gas collection cavity assembly 5. The water flow is guided and dispersed to the central cavity 3 through the arc plates 42 on both sides.

[0072] Preferably, the intermediate impact plate 41 is also an arc plate 42, and the diameter of the intermediate impact plate 41 is larger than the diameters of the arc plates 42 on both sides.

[0073] The pump in this embodiment is a canned motor pump.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A pump with a flow disturbing partition member, characterized in that, It includes a pump body (1) and a flow disturbing partition member disposed inside the pump body (1). An inner wall of the pump body (1) extends inward to form a step (10). In the direction of the central axis of the pump body (1), a first end face of the step (10) is at a first preset distance L from a second end face of the pump body (1). 1 The second end face is cooperatively connected with a motor base. the flow disturbing partition member includes: a cover plate (2), one side of which is pressed against the step (10) and welded to the pump body (1) and / or the step; a central cavity (3) which is arranged on the other side of the cover plate (2), and the central cavity (3) is coaxially arranged with the pump body (1); a baffle plate (4) which is arranged outside the central cavity (3) and is located at the water inlet (100) of the pump body (1), and the water flow at the water inlet (100) of the pump body (1) impacts the baffle plate (4) to remove large air bubbles in the water flow; an opening (31) is arranged on the outer side wall of the central cavity (3), water flow enters the central cavity (3), and small air bubbles in the water flow are scattered by the opening (31); air bubbles in the water flow are collected and discharged by a gas collection cavity assembly (5) in the pump body (1), and the gas collection cavity assembly (5) is arranged at the highest position of the pump body (1).

2. The pump with a flow disturbing partition member according to claim 1, characterized in that, the step (10) on the inner wall of the pump body (1) is arranged along the circumferential direction of the inner wall of the pump body (1).

3. The pump with a flow disturbing partition member according to claim 1 or 2, characterized in that, a first positioning structure is arranged on the side of the cover plate (2) in contact with the step (10), and a second positioning structure matching the first positioning structure is arranged on the step (10).

4. The pump with a flow disturbing partition member according to claim 3, characterized in that, the first positioning structure is a protrusion (21), the second positioning structure is a groove, and the protrusions (21) are circularly distributed on the cover plate (2).

5. The pump with a flow disturbing partition member according to claim 4, characterized in that, a third positioning structure is arranged on the cover plate (2), and a fourth positioning structure is arranged on the step (10) or the pump body (1), and the third positioning structure cooperates with the fourth positioning structure to prevent the cover plate (2) from rotating circumferentially.

6. The pump with a flow disturbing partition member according to claim 5, characterized in that, a first notch (23) is arranged on the cover plate (2), and a second notch (11) is arranged on the step (10), and the first notch (23) cooperates with the second notch (11).

7. The pump with a flow disturbing partition member according to claim 1, characterized in that, the central cavity (3) is a cylinder, the opening (31) is a long strip, the length of the opening (31) is arranged along the axial direction of the cylinder, and the openings (31) are evenly distributed along the circumferential direction of the cylinder; the baffle plate (4) is located outside the cylinder and is spaced by a second preset distance.

8. The pump with a flow disturbing partition member according to claim 7, characterized in that, an arc-shaped notch (32) is arranged on the cylinder, and the baffle plate (4) is arranged at the arc-shaped notch (32).

9. The pump with a flow disturbing partition member according to claim 8, characterized in that, The baffle plate (4) is an arc-shaped plate, the arc-shaped plate is disposed around the outer periphery of a part of the central cavity (3), the circular arc-shaped notch (32) is directly opposite to the inner side of the arc-shaped plate, and the water flow at the water inlet (100) impacts the outer side of the arc-shaped plate.

10. The pump with a flow disturbing partition member according to claim 9, wherein, the baffle plate (4) includes an intermediate impact plate (41) and arc-shaped plates (42) symmetrically arranged on both sides of the intermediate impact plate (41). The inner side of the intermediate impact plate (41) is directly opposite to the circular arc-shaped notch (32), the outer side of the intermediate impact plate (41) is directly opposite to the water inlet (100), and the arc-shaped plates (42) are disposed around the outer side of the central cavity (3).

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