Pump body assembly and pump

Abstract

The utility model belongs to the technical field of pumps, and provides a pump body, a pump body assembly and a pump, the pump body comprises a pump body, a mounting hole is arranged at the tail end of a water inlet channel on the pump body, an avoiding structure is arranged at the bottom of the mounting hole, a pump body wear ring is arranged in the mounting hole, and the bottom surface part of the pump body wear ring is pressed against the avoiding structure. The pump body assembly comprises the pump body. The pump comprises the pump body assembly. The inner surface of the pump body can make contact with electrophoresis liquid, and the phenomenon that the interior of the pump body is rusted in the working process of the pump is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pumps, and in particular relates to a pump body component and a pump. Background Art

[0002] The pump body of a canned motor pump is typically made of metal. Existing pump bodies typically undergo electrophoresis or coating processes to address internal and external corrosion. When the pump housing ring is pressed into the pump body, the bottom surface of the ring and the inner surface of the pump body are in complete contact, preventing the electrophoresis liquid from entering the pump body. After prolonged operation, rust may form at the contact point between the pump body and the bottom of the ring. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pump body assembly and a pump, wherein the inner surface of the pump body can contact the electrophoresis liquid during electrophoresis, thereby preventing rust from occurring inside the pump body during operation.

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

[0005] A pump assembly comprises a pump body and a pump body mouth ring, wherein the pump body is provided with a pump cavity and a fluid channel that are interconnected, and the pump body is provided with a mouth ring mounting groove at the connection between the pump cavity and the fluid channel, wherein the diameter of the mouth ring mounting groove is larger than the diameter of the end of the fluid channel;

[0006] The bottom surface of the mouth ring installation groove is provided with an avoidance structure, the pump body mouth ring is arranged in the mouth ring installation groove, and a portion of the bottom surface of the pump body mouth ring presses against the avoidance structure;

[0007] The avoidance structure is a protrusion arranged on the bottom surface of the mouth ring installation groove and extending upward.

[0008] Preferably, the protrusion is an annular protrusion arranged to fit the side wall of the mouth ring mounting groove.

[0009] Preferably, the cross section of the annular protrusion is rectangular.

[0010] Preferably, the annular protrusion has an axial dimension ranging from 0.5 mm to 2 mm.

[0011] Preferably, the radial dimension of the annular protrusion along the mouth ring mounting groove ranges from 2 mm to 3 mm.

[0012] Preferably, the protrusions are a plurality of dot-shaped protrusions or a plurality of disconnected protrusions arranged on the bottom surface of the mouth ring mounting groove.

[0013] Preferably, the plurality of dot-shaped protrusions or the plurality of disconnected protrusions are evenly distributed along the circumference of the mouth ring mounting groove.

[0014] Preferably, the annular protrusion is a wedge-shaped protrusion ring, and the wedge-shaped protrusion ring extends from the bottom surface of the mouth ring mounting groove to the inner wall of the end of the fluid channel.

[0015] Preferably, the cross section of the wedge-shaped protruding ring is a triangle, and the angle between the hypotenuse of the triangle and the horizontal line is 0-30°.

[0016] This embodiment also provides a pump, including the pump body assembly.

[0017] Compared with the prior art, the present invention has the following advantages: A relief structure is provided at the bottom of the ring mounting groove. After the pump ring is installed in the ring mounting groove, the bottom surface of the pump ring partially presses against the relief structure, reducing the contact area between the ring and the pump body. During electrophoresis of the pump body, the electrophoretic liquid can enter the space between the pump body and the bottom surface of the ring. The electrophoretic liquid can provide an anti-corrosion treatment on the inner surface of the pump body, preventing corrosion of the pump assembly during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the pump body of Example 1 of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the pump body of Example 2 of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the pump body of Example 3 of the present utility model.

[0021] Among them, 1. Pump body; 2. Pump body mouth ring; 3. Mouth ring installation groove; 4. Avoidance hole; 5. Dot-shaped protrusion; 8. Fluid channel; 9. Annular protrusion; 10. Pump cavity. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following 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 rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] Example 1

[0030] like Figure 1 As shown, this embodiment provides a pump assembly, which includes a pump body 11 and a pump body mouth ring 2. The pump body 1 is provided with a pump cavity 10 and a fluid channel 8 that are interconnected. The pump body 1 is provided with a mouth ring mounting groove 3 at the connection between the pump cavity 10 and the fluid channel 8. The diameter of the mouth ring mounting groove 3 is larger than the diameter of the end of the fluid channel 8. Specifically, in this embodiment, the above-mentioned fluid channel 8 is the water inlet channel of the pump body 1. The end of the above-mentioned fluid channel 8 refers to the starting end of the water inlet channel.

[0031] The bottom surface of the ring mounting groove 3 is provided with an escape structure. The pump body ring 2 is arranged in the ring mounting groove 3, and the bottom surface of the pump body ring 2 is partially pressed against the escape structure. The escape structure is a protrusion provided on the bottom surface of the ring mounting groove 3 and extending upward.

[0032] The bottom surface of the pump body mouth ring 2 is partially pressed against the avoidance structure. Specifically, the structure of the existing pump body mouth ring 2 is as follows: Figure 1 As shown, when the structure of the existing pump body mouth ring 2 remains unchanged, the bottom surface of the pump body mouth ring 2 and the avoidance structure are in point contact, line contact, or annular surface contact.

[0033] In this embodiment, an annular protrusion 9 is provided at the bottom of the mouth ring mounting groove 3. After the pump body mouth ring 2 is installed, its bottom surface abuts against the annular protrusion 9, thereby limiting the axial position of the pump body mouth ring 2. Simultaneously, the bottom surface of the pump body mouth ring 2 does not contact the bottom of the mouth ring mounting groove 3, but only contacts the annular protrusion 9. Therefore, the contact surface between the pump body mouth ring 2 and the pump body 1 is reduced. When the pump body is subjected to electrophoresis, the electrophoretic liquid can enter the space between the pump body 1 and the bottom surface of the pump body mouth ring 2. The electrophoretic liquid provides an anti-corrosion treatment to the surface of the pump body 1, preventing corrosion of the pump body components during operation.

[0034] The avoidance structure is a protrusion provided on the bottom surface of the mouth ring mounting groove 3 and extending upward. Specifically, in this embodiment, the protrusion is an annular protrusion 9 provided in contact with the side wall of the mouth ring mounting groove 3. That is, a space is formed at the bottom of the mouth ring mounting groove 3 as the avoidance hole 4.

[0035] Preferably, the cross section of the annular protrusion 9 is rectangular or arc-shaped.

[0036] Preferably, the cross section of the annular protrusion 9 in this embodiment is rectangular.

[0037] After the pump body mouth ring 2 is installed, the side wall of the pump body mouth ring 2 contacts the side wall of the mouth ring installation groove 3, and the bottom surface of the pump body mouth ring 2 presses against the boundary of the above-mentioned annular protrusion 9, and the pump body mouth ring 2 is installed in place. The pump body mouth ring 2 presses against the annular protrusion 9, and there is line contact between the two.

[0038] Preferably, when the cross-section of the annular protrusion 9 is rectangular, the axial dimension of the annular protrusion 9 is in the range of 0.5mm-2mm. The annular protrusion 9 is provided at the bottom of the mouth ring mounting groove 3, and the mouth ring mounting groove 3 is connected to the fluid channel 8, that is, the water inlet channel. The annular protrusion 9 is provided so that there is a certain space between the circulation channel and the pump body mouth ring 2, and the electrophoretic liquid can enter the space. If the axial dimension of the annular protrusion 9 exceeds 2mm, the wall thickness at the end of the water inlet channel 8 of the pump body 11 will be too thinned, affecting the structural strength of the pump body 11. If the axial dimension of the annular protrusion 9 is less than 0.5mm, the structural strength of the annular protrusion 9 is insufficient to support the pump body mouth ring 2. The pump body mouth ring 2 is interference fitted with the mouth ring mounting groove 3. When the pump body mouth ring 2 is pressed into the mouth ring mounting groove 3, the annular protrusion 9 will be crushed. In addition, after the pump body mouth ring 2 is installed, the axial distance between the bottom surface of the pump body mouth ring 2 and the annular protrusion 9 is too small, resulting in insufficient electrophoresis liquid entering the space between the two.

[0039] Preferably, the cross-section of the annular protrusion 9 is rectangular, and the radial dimension of the annular protrusion 9 along the mouth ring mounting groove 3 ranges from 2 mm to 3 mm. This ensures sufficient strength for the annular protrusion 9. However, if the radial dimension of the annular protrusion 9 along the mouth ring mounting groove 3 exceeds 3 mm, while still meeting the installation requirements of the pump mouth ring 2, the contact area between the bottom surface of the pump mouth ring 2 and the bottom of the mounting hole 33 increases. During electrophoresis, the area inaccessible to the electrophoretic liquid increases, increasing the area of ​​the pump body 1 susceptible to corrosion.

[0040] This embodiment also provides a pump, including the above-mentioned pump body assembly, to ensure that the pump will not corrode or rust after use.

[0041] Example 2

[0042] On the basis of the above embodiment 1, different from the above embodiment 1, preferably, as Figure 2 As shown, the protrusion is a dot-shaped convex point 5 or a plurality of disconnected convex points arranged on the bottom surface of the mouth ring mounting groove 3. Specifically, the protrusion in this embodiment is a dot-shaped convex point 5, and the dot-shaped convex point 5 is a semi-sphere or a cylinder.

[0043] Preferably, there are at least two dot-shaped protrusions 5. After the pump body mouth ring 2 is installed, the bottom surface of the pump body mouth ring 2 presses against the dot-shaped protrusions 5, and the dot-shaped protrusions 5 and the pump body mouth ring 2 are in point contact.

[0044] At least two dot-shaped protrusions 5 are provided at the bottom of the mounting hole 33. After the pump body mouth ring 2 is installed, there is point contact between the bottom surface of the pump body mouth ring 2 and the dot-shaped protrusions 5. By reducing the contact area between the pump body 11 and the bottom surface of the pump body mouth ring 2, the electrophoretic liquid can enter the space between the pump body 11 and the bottom surface of the pump body mouth ring 2, thereby performing anti-corrosion treatment on the surface of the inner wall of the pump body 11.

[0045] Preferably, the number of the dot-shaped protrusions 5 is in the range of 2-6 to ensure the support strength of the pump body mouth ring 2. At the same time, the contact area between the pump body mouth ring 2 and the pump body 11 can be minimized, allowing the electrophoretic liquid to enter between the pump body 11 and the pump body mouth ring 2 and perform electrophoresis on the pump body 11. Further preferably, the number of the dot-shaped protrusions 5 is 2, 4, or 6.

[0046] Preferably, the above-mentioned dot-shaped protrusions 5 are evenly distributed along the circumference of the mouth ring installation groove 3 so as to be in uniform contact with the pump body mouth ring 2.

[0047] Preferably, the dot-shaped protrusions 5 in this embodiment are cylindrical or hemispherical, and the diameter of the dot-shaped protrusions 5 ranges from 2 mm to 4 mm. The dot-shaped protrusions 5 limit the axial position of the pump body mouth ring 2 installed in the mouth ring mounting groove 3. If the diameter of the dot-shaped protrusions 5 is greater than 4 mm, the contact area between the pump body mouth ring 2 and the dot-shaped protrusions 5 increases, and the electrophoretic liquid cannot reach between the mouth ring mounting groove 3 and the pump body mouth ring 2. If the diameter of the dot-shaped protrusions 5 is less than 2 mm, the processing difficulty of the dot-shaped protrusions 5 increases, and the structural strength of a single dot-shaped protrusion 5 is insufficient, which can easily lead to breakage between the mouth ring mounting groove 3.

[0048] Preferably, the diameter of the above-mentioned dot-shaped protrusions 5 is 2 mm, 3 mm, or 4 mm.

[0049] Preferably, the above-mentioned dot-shaped protrusions 5 are multiple disconnected convex strips. After the pump body mouth ring 2 is installed in the mouth ring installation groove 3, the disconnected convex strips limit the axial position of the pump body mouth ring 2 installed in the mouth ring installation groove 3.

[0050] Preferably, the cross section of each of the above-mentioned broken ridges is any one of U-shaped, semicircular or rectangular.

[0051] Preferably, the plurality of disconnected protrusions are evenly distributed along the circumference of the mouth ring mounting groove 3 .

[0052] Preferably, the number of the disconnecting ridges ranges from 2 to 6. Further preferably, the number of the disconnecting ridges is 2, 4 or 6.

[0053] Example 3

[0054] On the basis of the above embodiment 1, different from the above embodiment 1, preferably, as Figure 3 As shown, the cross section of the annular protrusion 9 is triangular, and the annular protrusion 9 extends from the bottom surface of the mouth ring mounting groove 3 to the inner wall of the end of the water inlet channel. The inner wall of the annular protrusion 9 is an inclined surface.

[0055] After the pump body mouth ring 2 is installed, it contacts the above-mentioned inclined surface. Therefore, when the pump body 1 is electrophoresed, the electrophoretic liquid will enter the frustum-shaped space between the pump body mouth ring 2 and the mouth ring installation groove 3.

[0056] Preferably, the annular protrusion 9 is a wedge-shaped protrusion ring, which extends from the bottom surface of the mouth ring mounting groove 3 to the inner wall of the end of the water inlet channel.

[0057] The cross-section of the wedge-shaped protrusion is triangular, with the angle between the hypotenuse and the base of the triangle being 0-30°. If the angle is greater than 30°, the wall thickness of the pump body 11 at the end of the water inlet channel 8 is excessively thinned, resulting in insufficient structural strength of the pump body 11.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A pump assembly, characterized in that: The invention comprises a pump body (1) and a pump body mouth ring (2), wherein the pump body (1) is provided with a pump cavity (10) and a fluid channel (8) which are communicated with each other, and the pump body (1) is provided with a mouth ring mounting groove (3) at the connection between the pump cavity (10) and the fluid channel (8), wherein the diameter of the mouth ring mounting groove (3) is larger than the diameter of the end of the fluid channel (8); The bottom surface of the mouth ring installation groove (3) is provided with an avoidance structure, the pump body mouth ring (2) is arranged in the mouth ring installation groove (3), and a portion of the bottom surface of the pump body mouth ring (2) is pressed against the avoidance structure; The avoidance structure is a protrusion arranged on the bottom surface of the mouth ring installation groove (3) and extending upward.

2. The pump assembly according to claim 1, characterized in that The protrusion is an annular protrusion (9) arranged to fit the side wall of the mouth ring installation groove (3).

3. The pump assembly according to claim 2, characterized in that: The cross section of the annular protrusion (9) is rectangular.

4. The pump assembly according to claim 3, characterized in that The size of the annular protrusion (9) along the axial direction ranges from 0.5 mm to 2 mm.

5. The pump assembly according to claim 4, characterized in that The radial dimension of the annular protrusion (9) along the mouth ring mounting groove (3) ranges from 2 mm to 3 mm.

6. The pump assembly according to claim 1, characterized in that The protrusions are a plurality of dot-shaped protrusions (5) or a plurality of disconnected protrusions arranged on the bottom surface of the mouth ring mounting groove (3).

7. The pump assembly according to claim 6, characterized in that The plurality of dot-shaped protrusions (5) or the plurality of disconnected protrusions are evenly distributed along the circumference of the mouth ring mounting groove (3).

8. The pump assembly according to claim 2, characterized in that: The annular protrusion (9) is a wedge-shaped protrusion ring, and the wedge-shaped protrusion ring extends from the bottom surface of the mouth ring mounting groove (3) to the inner wall of the end of the fluid channel (8).

9. The pump assembly according to claim 8, characterized in that The cross section of the wedge-shaped convex ring is a triangle, and the angle between the hypotenuse of the triangle and the horizontal line is 0-30°.

10. A pump, characterized in that: Comprising the pump body assembly according to claim 9.

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