CN219911261U - Pump with a pump body - Google Patents

Abstract

The utility model belongs to the technical field of pumps, and provides a pump which comprises a pump body and a bearing seat, wherein a first step is arranged at a port of the pump body; one end of the bearing seat is propped against the first step, a volute is arranged on the inner side of the bearing seat, and a bearing is arranged in the center of the bearing seat; the included angle alpha between the water diffusion section at the outlet of the volute and the tangent line of the outer edge of the volute ranges from 30 degrees to 40 degrees; the outlet diameter D1 of the water diffusion section at the outlet of the volute is more than or equal to 16mm. The volute is arranged on the bearing seat of the pump, so that the die opening difficulty is reduced, the production is reduced, and the hydraulic performance of the pump during operation is improved.

Description

Pump with a pump body

Technical Field

The utility model belongs to the technical field of pumps, and particularly relates to a pump.

Background

The existing wall-mounted furnace shielding pump is mainly characterized in that a volute is built on a wall-mounted furnace pump body or a wall-mounted furnace cover plate, the shape of the volute built on the wall-mounted furnace cover plate is more complete than that of the volute built on the wall-mounted furnace pump body, and however, the volute still can be interfered by a bearing seat. Because the complexity of the wall-mounted boiler pump body and the space at the outlet of the volute chamber can be occupied by the bearing seat during installation, the volute chamber is not complete enough when the volute chamber is built on the pump body, and the hydraulic performance of the pump is reduced to some extent. In addition, because of the complex structure of the cover plate, creating a volute on the cover plate can result in complex molds for forming the cover plate, difficult demolding, and high costs.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the pump, wherein the volute is arranged on the bearing seat, so that the die opening difficulty is reduced, the production is reduced, and the hydraulic performance of the pump is improved when the pump works.

To achieve the purpose, the utility model adopts the following technical scheme:

the present utility model provides a pump comprising:

a first step is arranged at the port of the pump body;

the bearing seat is provided with a volute chamber at the inner side, and a bearing is arranged at the center of the bearing seat;

the included angle alpha between the water diffusion section at the outlet of the volute and the tangent line of the outer edge of the volute ranges from 30 degrees to 40 degrees;

the outlet diameter D1 of the water diffusion section at the outlet of the volute is more than or equal to 16mm.

Preferably, the pump further comprises:

the cover plate is arranged in the pump body and positioned on the inner side of the bearing seat, and the bearing seat and the cover plate are axially spaced by a first preset distance.

Preferably, the pump further comprises:

the shielding sleeve is arranged on the outer side of the bearing seat, and at least part of the outer edge of the shielding sleeve is clamped on the inner wall of the pump body.

Preferably, the bearing housing includes:

the annular bearing seat comprises an annular bearing seat body, a first flange part and a second flange part, wherein one end of the annular bearing seat body extends outwards along the radial direction of the annular bearing seat body, the first flange part is propped against the first step, and the other end of the annular bearing seat body extends along the radial direction of the annular bearing seat body;

the volute is arranged on the inner wall of the annular bearing seat body;

an extension part, a transition fillet part and a second pressing part are sequentially connected with the second edge part; the extension part extends along the axial direction of the annular bearing seat body, and the second pressing part extends along the radial direction of the annular bearing seat body and presses against the pump body.

Preferably, the bearing housing further comprises: and the bearing mounting part is connected to the center of the annular bearing seat body and is close to one end of the opening of the pump body.

Preferably, a second step is provided on the pump body, and the second pressing portion presses against the second step.

Preferably, the bearing housing is formed by casting.

Preferably, at least part of the structure of the shield is located between the extension and the bearing mounting portion.

Preferably, the pump is a canned motor pump.

Compared with the prior art, the utility model has the following beneficial effects:

the pump of the present utility model is different from the conventional one in that the volute is built on the volute or the cover plate, and the volute is set on the bearing seat, so that the mold opening component is changed from the volute or the cover plate into the bearing seat during forming the volute, and thus, the mold opening difficulty is reduced and the production cost is reduced. The volute is arranged on the bearing seat, the problem that the volute is arranged on the cover plate or the pump body and the bearing seat occupies the space at the outlet of the volute is solved, the outlet diameter D1 of the water diffusion section at the outlet of the volute is more than or equal to 16mm, and the outlet diameter D1 of the water diffusion section cannot be influenced by the volute arranged on the bearing seat, so that the hydraulic performance of the pump cannot be influenced.

In addition, because the volute is arranged on the bearing seat, different volute chambers can be equipped for the pump by changing different bearing sleeves, the shape of the pump body is not required to be changed, namely, the shape and the structure of the pump body are not required to be changed, the die sinking times and the difficulty of the pump body are reduced, and the production cost is reduced.

Drawings

FIG. 1 is a schematic view of the internal structure of a pump according to the present utility model;

FIG. 2 is a schematic view of a bearing housing according to the present utility model;

FIG. 3 is a cross-sectional view of a bearing housing in accordance with the present utility model;

FIG. 4 is a schematic view of a cover plate according to the present utility model;

FIG. 5 is a schematic view of the volute of the present utility model;

FIG. 6 is a top view of the volute of the present utility model;

FIG. 7 is a left side view of the volute of the present utility model;

FIG. 8 is a schematic view of a first angle of the impeller of the present utility model;

fig. 9 is a schematic view of a second angle of the impeller of the present utility model.

1, a pump body; 11. a first step; 12. a second step; 2. a bearing seat; 21. an annular bearing seat body; 22. a first edge portion; 23. a second edge portion; 24. an extension; 25. a transition rounded corner portion; 26. a second pressing part; 27. a bearing mounting portion; 3. a cover plate; 4. a shielding sleeve; 5. a water body diffusion section; 6. a volute; 7. an impeller.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 9, in the present embodiment, there is provided a pump including a pump body 1 and a bearing housing 2, wherein a first step 11 is provided at a port of the pump body 1. The bearing frame 2 sets up in the pump body 1 inside, and the one end of bearing frame 2 supports and presses in first step 11, and the inboard of bearing frame 2 is provided with volute 6, and the bearing is installed at the center of bearing frame 2.

The pump in this embodiment is different from the conventional one in which the volute 6 is built on the volute or cover plate 3, and the volute 6 is provided on the bearing housing 2, so that the mold opening member in forming the volute 6 is changed from the volute or cover plate 3 to the bearing housing 2, thereby reducing the mold opening difficulty and the production cost. Moreover, the volute chamber 6 is arranged on the bearing seat 2, the problem that the volute chamber 6 is arranged on the cover plate 3 or the pump body 1, and the bearing seat 2 occupies the space at the outlet of the volute chamber 6 is solved, the outlet diameter D1 of the water diffusion section 5 at the outlet of the volute chamber 6 is more than or equal to 16mm, and the volute chamber 6 is arranged on the bearing seat 2 without influencing the outlet diameter D1 of the water diffusion section 5, so that the hydraulic performance of the pump is not influenced.

In addition, because the volute 6 is arranged on the bearing seat 2, different volute 6 can be assembled on the pump by changing different bearing sleeves, the shape of the pump body 1 is not required to be changed, namely, the shape and the structure of the pump body 1 are not required to be changed, the die sinking times and the difficulty of the pump body 1 are reduced, and the production cost is reduced.

Preferably, the bearing housing 2 is formed by casting.

Preferably, the pump further comprises a cover plate 3, wherein the cover plate 3 is arranged in the pump body 1 and is positioned at the inner side of the bearing seat 2, and the bearing seat 2 and the cover plate 3 are axially spaced by a first preset distance.

In this embodiment, the cover plate 3 is disposed inside the pump body 1, the cover plate 3 and the bearing seat 2 are sequentially installed from inside to outside along the axial direction of the pump body 1, the specific structure of the cover plate 3 is shown in fig. 4, and the cover plate 3 and the pump body 1 are installed and fixed by ultrasonic welding. And the cover plate 3 and the bearing seat 2 are spaced by a first preset distance along the axial direction of the pump body 1 so as to prevent the two from being interfered.

Preferably, the pump further comprises a shielding sleeve 4, wherein the shielding sleeve 4 is arranged on the outer side of the bearing seat 2, and at least part of the outer edge of the shielding sleeve 4 is clamped on the inner wall of the pump body 1.

When the pump is in operation, water enters the pump body 1 from the inlet of the pump, flows in from above the impeller 7 shown in fig. 8 and 9 through the cover plate 3, and flows out of the pump body 1 from the volute 6 under the action of the volute 6 by the high-speed rotation of the impeller 7. The impeller 7 is arranged between the cover plate 3 and the bearing housing 2.

Preferably, the bearing housing 2 and the canned pump are both fixedly mounted by four-point contact.

Preferably, the bearing seat 2 includes an annular bearing seat body 21, one end of which extends radially outwardly with a first edge portion 22, the first edge portion 22 being pressed against the first step 11, and the other end of which extends radially outwardly with a second edge portion 23. The volute chamber 6 is formed on the inner wall of the annular bearing seat body 21. An extension part 24, a transition fillet part 25 and a second pressing part 26 are sequentially connected with the second edge part 23; the extension portion 24 extends along the axial direction of the annular bearing seat body 21, and the second pressing portion 26 extends along the radial direction of the annular bearing seat body 21 and presses against the pump body 1.

The annular bearing seat body 21 is provided with the first edge portion 22 and the second edge portion 23, and the annular bearing seat body 21 between the first edge portion 22 and the second edge portion 23 has a thin wall thickness, and mainly prevents shrinkage during injection molding by reducing the thickness of the annular bearing seat body 21.

The annular bearing seat body 21 is sequentially provided with an extension part 24, a transition fillet part 25 and a second pressing part 26 through a second edge part 23, and the second pressing part 26 presses against the pump body 1 so as to position the bearing seat 2.

Preferably, the pump body 1 is provided with a second step 12, and the second pressing portion 26 presses against the second step 12.

Preferably, the bearing housing 2 further includes a bearing mounting portion 27 connected to the center of the annular bearing housing body 21 and near one end of the opening of the pump body 1. The annular bearing seat body 21 extends to the center along the radial direction thereof to form a bearing mounting part 27, and the bearing mounting part 27 is in interference fit with the bearing. Preferably, at least part of the structure of the shielding sleeve 4 is located between the extending part 24 and the bearing mounting part 27, and part of the structure of the shielding sleeve 4 is mounted between the second edge part 23, the extending part 24, the rounded transition part and the second pressing part 26 and the bearing mounting part 27, so that the mounting space is saved, the whole structure of the pump is compact, and the structural volume of the pump is reduced. Preferably, the bottom of the second rim portion 23 is flush with a portion of the bottom of the bearing mounting portion 27.

The simulated structure of the volute 6 is shown in fig. 5-7, and preferably, the outlet diameter of the water body diffusion section 5 at the outlet of the volute 6 is not smaller than 16mm. And the included angle alpha between the water diffusion section 5 at the outlet of the volute 6 and the tangent line of the outer edge of the volute 6 ranges from 30 degrees to 40 degrees, so that the water outlet of the volute 6 is ensured to the greatest extent, and the hydraulic performance of the pump is further ensured.

Specifically, in this embodiment, the radius R1 of the base circle of the volute chamber 6 ranges from 25mm to 32mm, the difference between the radius R2 of the outermost circle and the radius R1 of the base circle is 3mm, the dimension of the volute chamber 6 along the axial direction of the bearing seat 2 is the height of the volute chamber 6, and the dimension of the height H of the volute chamber 6 ranges from 6mm to 10mm.

The upper surface of the volute 6 is in transitional connection with the bearing seat 2 through a first round corner R3, and the lower surface of the volute 6 is in transitional connection with the bearing seat 2 through a second round corner R4.

Preferably, the pump is a canned motor pump. The shielding pump is mainly used for wall-mounted furnaces.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (9)

1. A pump, comprising:

a first step (11) is arranged at the port of the pump body (1);

the bearing seat (2) is pressed against the first step (11) at one end, a volute (6) is arranged on the inner side of the bearing seat (2), and a bearing is arranged in the center of the bearing seat (2);

an included angle alpha between a water body diffusion section (5) at the outlet of the volute (6) and a tangent line of the outer edge of the volute (6) ranges from 30 degrees to 40 degrees;

the diameter D1 of the outlet of the water diffusion section (5) at the outlet of the volute (6) is more than or equal to 16mm.

2. The pump of claim 1, further comprising:

the cover plate (3) is arranged in the pump body (1) and is positioned on the inner side of the bearing seat (2), and the bearing seat (2) and the cover plate (3) are axially spaced by a first preset distance.

3. The pump of claim 1, further comprising:

the shielding sleeve (4) is arranged on the outer side of the bearing seat (2), and at least part of the outer edge of the shielding sleeve (4) is clamped on the inner wall of the pump body (1).

4. A pump according to claim 3, characterized in that the bearing housing (2) comprises:

the annular bearing seat comprises an annular bearing seat body (21), wherein one end of the annular bearing seat body is provided with a first edge part (22) extending outwards along the radial direction of the annular bearing seat body, the first edge part (22) is pressed against the first step (11), and the other end of the annular bearing seat body is provided with a second edge part (23) extending along the radial direction of the annular bearing seat body;

the volute (6) is arranged on the inner wall of the annular bearing seat body (21);

an extension part (24), a transition fillet part (25) and a second pressing part (26) are sequentially connected with the second edge part (23); the extension part (24) extends along the axial direction of the annular bearing seat body (21), and the second abutting part (26) extends along the radial direction of the annular bearing seat body (21) and abuts against the pump body (1).

5. Pump according to claim 4, characterized in that the bearing housing (2) further comprises: and a bearing mounting part (27) which is connected to the center of the annular bearing seat body (21) and is close to one end of the opening of the pump body (1).

6. Pump according to claim 4, characterized in that the pump body (1) is provided with a second step (12), the second abutment (26) being pressed against the second step (12).

7. A pump according to any one of claims 1-3, characterized in that the bearing housing (2) is formed by casting.

8. Pump according to claim 5, characterized in that at least part of the structure of the shielding sleeve (4) is located between the extension (24) and the bearing mounting (27).

9. A pump according to any one of claims 1 to 3, wherein the pump is a canned motor pump.