CN217633060U

CN217633060U - Mounting structure for bearing seat on submersible sewage pump

Info

Publication number: CN217633060U
Application number: CN202221779733.6U
Authority: CN
Inventors: 谢申连; 谢昀静
Original assignee: Zhejiang Carrier Pump Industry Co ltd
Current assignee: Zhejiang Carrier Pump Industry Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-10-21
Anticipated expiration: 2032-07-11

Abstract

The utility model provides a bearing housing mounting structure on submersible sewage pump belongs to water pump technical field. It has solved the current not good problem of bolster bearing housing installation accuracy. This submersible sewage pump bolster bearing housing mounting structure includes the barrel and locates the top cap above the barrel, top cap and barrel link firmly through the round screw, bolster bearing housing is in by the cavity that forms between top cap and the barrel, and bolster bearing housing's roof and diapire respectively sticis on top cap and barrel, bolster bearing housing's upper end side is the last conical surface of diameter by last grow gradually from bottom to top, bolster bearing housing's lower extreme side is the lower conical surface that the diameter becomes gradually from top to bottom, the shaping has the conical surface one that matches with last conical surface on the top cap inner wall, the shaping has the conical surface two that matches with lower conical surface on the barrel inner wall, and go up the conical surface and sticis respectively on conical surface one and conical surface two with lower conical surface. The utility model discloses bolster bearing housing installation accuracy can be improved.

Description

Mounting structure for bearing seat on submersible sewage pump

Technical Field

The utility model belongs to the technical field of the water pump, a submersible sewage pump, especially a submersible sewage pump bolster bearing housing mounting structure is related to.

Background

Submersible sewage pumps are submersible sewage pumps which are suitable for transporting liquids containing hard solids, fibrous matter and particularly dirty, sticky, slippery liquids.

The existing submersible sewage pump is a submersible sewage pump (application number: 201320164457.7) disclosed in chinese patent library, in which a rear bearing housing rotatably connected to the rear end of a rotating shaft is clamped and positioned between a motor top cover and a motor barrel and locked by screws. The assembly precision and the processing precision of parts are limited, when the assembly is carried out in practice, the eccentric dislocation error of the machine barrel and the upper bearing seat is easy to occur, the error is difficult to be observed through naked eyes, and the upper bearing seat can cause the deviation of the rotating shaft so as to influence the matching of the impeller and the pump cavity of the pump shell and the working stability and efficiency of the submersible pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a submersible sewage pump bolster bearing housing mounting structure that installation accuracy is high.

The purpose of the utility model can be realized by the following technical proposal: the mounting structure of the upper bearing seat of the submersible sewage pump comprises a machine barrel and a top cover arranged above the machine barrel, wherein the top cover is fixedly connected with the machine barrel through a circle of screw, the upper bearing seat is positioned in a cavity formed between the top cover and the machine barrel, and the top wall and the bottom wall of the upper bearing seat are respectively tightly pressed on the top cover and the machine barrel.

And the upper conical surface is matched with the first conical surface and the second conical surface to forcibly correct the position of the upper bearing seat, ensure that the machine barrel and the upper bearing seat are in a coaxial state, and improve the mounting precision of the pump shaft, so that the running efficiency and the working stability of the drainage pump are enhanced.

In the bearing seat mounting structure of the submersible sewage pump, the outer wall of the lower end of the top cover is integrally formed with an annular flange coaxial with the machine barrel, and the annular flange is fixedly connected with the machine barrel through the screw.

In the mounting structure of the upper bearing seat of the submersible sewage pump, the convex ring is integrally formed on the outer wall of the middle part of the upper bearing seat, the convex ring and the upper bearing seat are coaxially arranged, and the convex ring is clamped and positioned between the annular flange and the machine barrel, so that the positioning effect of the upper bearing seat can be enhanced, a sealing path formed between the upper bearing seat and the top cover as well as between the upper bearing seat and the machine barrel can be prolonged, and the working stability of the sewage pump is improved.

In the bearing seat mounting structure on the submersible sewage pump, through holes for the screw rod to pass through are vertically penetrated through the convex ring, and the through holes are the same in number and correspond to the screws in position one to one. The through hole is matched with the screw rod part and used for circumferential limiting of the upper bearing seat, and the positioning strength and stability of the upper bearing seat are further enhanced.

In the bearing seat mounting structure of the submersible sewage pump, annular steps are formed in the inner wall of the lower end of the top cover and the inner wall of the upper end of the machine barrel, each annular step is composed of an annular side face and an annular bottom face, the first conical face and the second conical face are the two annular side faces respectively, the top wall and the bottom wall of the upper bearing seat are tightly pressed on the two annular bottom walls respectively, two ends of the upper bearing seat are sealed with the two annular bottom walls respectively through the sealing rings, and the axes of the sealing rings extend vertically. The sealing ring and the convex ring are clamped and positioned between the annular flange and the machine barrel, and the upper conical surface and the lower conical surface are respectively tightly pressed on the conical surface I and the conical surface II in cooperation, so that a sealing path formed between the upper bearing seat and the top cover as well as the machine barrel can be effectively prolonged, the sealing performance is improved, and the working stability of the sewage pump is improved.

In the above-mentioned submersible sewage pump upper bearing seat mounting structure, the annular grooves are provided on both the top wall and the bottom wall of the upper bearing seat, the two seal rings are respectively provided in the two annular grooves, and both sides of the seal ring are respectively pressed tightly on the corresponding annular groove bottom wall and the corresponding annular bottom wall.

In the mounting structure of the upper bearing seat of the submersible sewage pump, the upper bearing seat is of an integrated structure and is integrally formed in a casting mode so as to enhance the self strength and the structural stability of the upper bearing seat.

In the above-mentioned submersible sewage pump upper bearing housing mounting structure, both the lower side of the upper conical surface and the upper side of the lower conical surface extend to the convex ring.

Compared with the prior art, the mounting structure of the bearing seat on the submersible sewage pump has the following advantages:

1. under the matching of the upper conical surface and the first conical surface as well as the lower conical surface and the second conical surface, the position of the upper bearing seat is forcibly corrected, the machine barrel and the upper bearing seat are ensured to be in a coaxial state, and the mounting precision of the pump shaft is improved, so that the operation efficiency and the working stability of the drainage pump are enhanced.

2. Under the matching of the sealing ring and the convex ring which are clamped and positioned between the annular flange and the machine barrel and the upper conical surface and the lower conical surface which are respectively pressed on the conical surface I and the conical surface II, the sealing path formed between the upper bearing seat and the top cover and the machine barrel can be effectively prolonged, so that the sealing performance is improved, and the working stability of the sewage pump is improved.

Drawings

Fig. 1 is a schematic view of the construction of a submersible sewage pump.

Fig. 2 is an enlarged schematic view of a structure in fig. 1.

FIG. 3 is a schematic view showing the coupling structure of the cap and the cylinder.

Fig. 4 is a schematic structural view of the upper bearing seat.

In the figure, 1, cylinder; 1a, a second conical surface; 2. a top cover; 2a, a first conical surface; 2b, an annular flange; 3. a screw; 4. an upper bearing seat; 4a, a central hole; 4b, an upper conical surface; 4c, a lower conical surface; 4d, an annular groove; 4e, a convex ring; 4f, through holes; 5. an annular step; 6. and (5) sealing rings.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, this submersible sewage pump upper bearing seat mounting structure includes barrel 1 and locates the top cap 2 of barrel 1 top, and top cap 2 and barrel 1 coaxial arrangement, and both link firmly through the screw 3 of round along 1 circumference equipartition of barrel, and at this moment, form a cavity between barrel 1 and the top cap 2.

The upper bearing seat 4 is of an integral structure and is integrally formed by casting, the upper bearing seat 4 is provided with a central hole 4a for mounting a bearing, and the central hole 4a is coaxially arranged with the machine barrel 1. As shown in fig. 1, the upper bearing housing 4 is in the cavity, and the top and bottom walls of the upper bearing housing 4 are pressed against the head 2 and the barrel 1, respectively.

In particular, in the case of a system,

as shown in fig. 1, 2 and 3, the inner wall of the lower end of the top cover 2 and the inner wall of the upper end of the machine barrel 1 are both provided with annular steps 5, the two annular steps 5 are both coaxial with the machine barrel 1, and the annular steps 5 are composed of annular side surfaces and annular bottom surfaces. The two ends of the upper bearing seat 4 are respectively positioned in the two annular steps 5, and the top wall and the bottom wall of the upper bearing seat 4 are respectively tightly pressed on the two annular bottom walls. The lateral surface of the upper end of the upper bearing seat 4 is an upper conical surface 4b with the diameter gradually increasing from top to bottom, the lateral surface of the lower end of the upper bearing seat 4 is a lower conical surface 4c with the diameter gradually decreasing from top to bottom, the annular lateral wall on the upper side is a first conical surface 2a matched with the upper conical surface 4b, the annular lateral wall on the lower side is a second conical surface 1a matched with the lower conical surface 4c, and the upper conical surface 4b and the lower conical surface 4c are respectively tightly pressed on the first conical surface 2a and the second conical surface 1 a.

Under the matching of the upper conical surface 4b and the first conical surface 2a, and the lower conical surface 4c and the second conical surface 1a, the position of the upper bearing seat 4 is forcibly corrected, the machine barrel 1 and the upper bearing seat 4 are ensured to be in a coaxial state, and the mounting precision of the pump shaft is improved, so that the operation efficiency and the working stability of the drainage pump are enhanced.

Further, as shown in fig. 2 and 4, both ends of the upper bearing seat 4 are sealed with the two annular bottom walls respectively through the sealing rings 6, and the axes of the sealing rings 6 extend vertically. In this embodiment, the top wall and the bottom wall of the upper bearing seat 4 are both provided with annular grooves 4d, the two sealing rings 6 are respectively arranged in the two annular grooves 4d, and two sides of the sealing ring 6 are respectively pressed tightly on the bottom wall and the annular bottom wall of the corresponding annular groove 4 d.

As shown in fig. 1 and 2, an annular flange 2b coaxial with the cylinder 1 is integrally formed on the outer wall of the lower end of the top cap 2, and the annular flange 2b is fixedly connected with the cylinder 1 through the screw 3. A convex ring 4e is integrally formed on the outer wall of the middle part of the upper bearing seat 4, the convex ring 4e and the upper bearing seat 4 are coaxially arranged, and the convex ring 4e is clamped and positioned between the annular flange 2b and the machine barrel 1, so that the positioning effect of the upper bearing seat 4 can be enhanced, a sealing path formed between the upper bearing seat 4 and the top cover 2 and between the upper bearing seat 4 and the machine barrel 1 can be prolonged, and the working stability of the sewage pump is improved. Further, through holes 4f for the rods of the screws 3 to pass through are vertically arranged on the convex ring 4e in a penetrating manner, and the through holes 4f are the same as the screws 3 in number and are in one-to-one correspondence with the positions of the screws 3. The through hole 4f is matched with the rod part of the screw 3 and used for circumferential limiting of the upper bearing seat 4 and further strengthening the positioning strength and stability of the upper bearing seat 4.

In the actual product, the lower side of the upper tapered surface 4b and the upper side of the lower tapered surface 4c extend to the convex ring 4e.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Submersible sewage pump upper bearing seat mounting structure, include barrel (1) and top cap (2) of locating barrel (1) top, top cap (2) and barrel (1) link firmly through round screw (3), bolster bearing housing (4) are in by the cavity that forms between top cap (2) and barrel (1), and the roof and the diapire of bolster bearing housing (4) are sticis respectively on top cap (2) and barrel (1), its characterized in that, the upper end side of bolster bearing housing (4) is last conical surface (4 b) that the diameter is from the top down grow gradually, the lower extreme side of bolster bearing housing (4) is lower conical surface (4 c) that the diameter is from the top down diminish gradually, the shaping has conical surface (2 a) that matches with last conical surface (4 b) on top cap (2) inner wall, the shaping has conical surface two (1 a) that match with lower conical surface (4 c) on barrel (1) inner wall, and go up conical surface (4 b) and conical surface (4 c) are sticis respectively on conical surface (2 a) and two (1 a).

2. The upper bearing housing mounting structure of a submersible sewage pump according to claim 1, wherein an annular flange (2 b) coaxial with the cylinder (1) is integrally formed on the outer wall of the lower end of the head (2), and the annular flange (2 b) is fixedly connected with the cylinder (1) through the screw (3).

3. The submersible sewage pump upper bearing block mounting structure according to claim 2, wherein a protruding ring (4 e) is integrally formed on the middle outer wall of the upper bearing block (4), the protruding ring (4 e) is coaxially arranged with the upper bearing block (4), and the protruding ring (4 e) is clamped and positioned between the annular flange (2 b) and the cylinder (1).

4. The upper bearing block mounting structure of the submersible sewage pump according to claim 3, wherein the protruding ring (4 e) is vertically penetrated with a through hole (4 f) for the rod part of the screw (3) to pass through, and the through holes (4 f) and the screws (3) have the same number and correspond to each other in position.

5. The mounting structure of the upper bearing seat of the submersible sewage pump according to claim 1, wherein the inner wall of the lower end of the top cover (2) and the inner wall of the upper end of the machine barrel (1) are both provided with an annular step (5), the annular step (5) is composed of an annular side surface and an annular bottom surface, the first conical surface (2 a) and the second conical surface (1 a) are the two annular side surfaces, the top wall and the bottom wall of the upper bearing seat (4) are respectively tightly pressed on the two annular bottom walls, the two ends of the upper bearing seat (4) are respectively sealed with the two annular bottom walls through the sealing rings (6), and the axis of the sealing rings (6) vertically extends.

6. The upper bearing seat mounting structure of the submersible sewage pump according to claim 5, wherein annular grooves (4 d) are formed in both the top wall and the bottom wall of the upper bearing seat (4), two seal rings (6) are respectively disposed in the two annular grooves (4 d), and both sides of the seal rings (6) are respectively pressed against the bottom wall and the annular bottom wall of the corresponding annular grooves (4 d).

7. The submersible sewage pump upper bearing housing mounting structure according to claim 1, wherein the upper bearing housing (4) is of a one-piece structure and is integrally formed by casting.

8. The submersible sewage pump upper bearing housing mounting structure according to claim 2 or 3, wherein both the lower side of the upper conical surface (4 b) and the upper side of the lower conical surface (4 c) extend to the convex ring (4 e).