CN215633967U

CN215633967U - Fluid director for pump

Info

Publication number: CN215633967U
Application number: CN202121692824.1U
Authority: CN
Inventors: 李进富; 任兵; 叶龙; 李川; 杨杰
Original assignee: Zhejiang Shimge Pump Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-25
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a fluid director for a pump, which solves the problems that a floating seal ring in the prior art is inconvenient to produce and assemble, is easy to block and the like, and adopts the technical scheme that: the end cover, the outer cover seat and the outer cover are surrounded to form a floating sealing ring accommodating cavity, and the floating sealing ring accommodating cavity is internally provided with a floating sealing ring. The method has the following effects: the floating sealing ring is not easy to be blocked and has reasonable axial floating capacity.

Description

Fluid director for pump

Technical Field

The utility model relates to a fluid director for a pump, in particular to a fluid director for a pump, which can improve the radial floating degree and the rotation stopping effect of a floating sealing ring.

Background

If a sheet-type floating ring sealing ring is arranged in the existing fluid director for the pump, the floating ring sealing ring is small in thickness and poor in sealing effect, and the floating ring sealing ring is easy to wear and lose efficacy.

If a convex point type or concave point type floating ring sealing ring is arranged in the existing fluid director for the pump. For example, the floating seal ring is provided with a concave point which is matched with a convex point on the outer blocking cover to prevent the floating seal ring from rotating. When the fluid director is assembled and the floating sealing ring is pressed on the diversion shell, the situation that the concave points are not right opposite to the convex points easily occurs, the phenomenon that the floating sealing ring is clamped is caused, and the fluid director cannot be used.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide the fluid director for the pump, which changes the structures of the outer baffle cover and the floating seal ring, is convenient to produce and assemble, can improve the radial floating degree of the floating seal ring, avoids the situation that the floating seal ring is stuck, and can form a rotation stopping effect on the floating seal ring.

The technical purpose of the utility model is mainly solved by the following technical scheme: the fluid director for the pump comprises a diversion shell, one end of the diversion shell is open, the other end of the diversion shell is provided with an end cover, a shaft hole is formed in the end cover, an outer cover retaining seat is fixedly arranged on the outer side of the end cover, the outer cover retaining seat is matched with the outer cover retaining seat, the end cover, the outer cover retaining seat and the outer cover retaining seat are surrounded to form a floating sealing ring accommodating cavity, and a floating sealing ring is arranged in the floating sealing ring accommodating cavity.

The structure of the outer blocking cover and the floating sealing ring is changed, the production and the assembly are convenient, and the radial floating degree of the floating sealing ring can be improved. If the outer peripheral wall is polygonal bulge loop and passes polygonal central opening, it is right to say that the assembly of floating seal ring, simple to operate can effectively avoid the dead phenomenon of floating seal ring card that floating seal ring installation mistake caused. And simultaneously, the floating sealing ring can form a rotation stopping function. When being applied to the pump, can reduce pump operating noise.

Specifically, the floating sealing ring is prevented from rotating by the fact that the polygonal-prism-shaped central opening in the outer retaining cover and the polygonal-prism-shaped peripheral wall in the floating sealing ring form a male-female nested fit, and when the floating sealing ring is assembled, the convex ring easily penetrates through the polygonal-prism-shaped central opening in the outer retaining cover and is prevented from being clamped.

As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures:

the internal diameter of bulge loop with the internal diameter adaptation of the body of floating seal ring, the periphery wall of bulge loop with form the indent step ring between the body of floating seal ring, the limit ring portion of outer fender lid with indent step ring clearance fit, the limit ring portion restriction the floating seal ring axial degree of floating, the axial home range of effective control floating seal ring reduces floating seal ring's axial float.

Outer fender lid seat include the flat ring portion, with the outer flaring loudspeaker ring portion that is a body structure along the outer edge of flat ring portion, with the interior buckling parts that is a body structure along the radial setting of a body structure of flat ring portion, and with buckling parts are a body structure accept the ring portion, accept the ring portion and deviate from flat ring portion, and with flat ring portion is parallel, flat ring portion buckling parts with the section of accepting the ring portion is "z" font, it accepts the ring portion and is in the inboard of spacing ring portion, outer fender lid the buckling parts with buckling parts interference buckle cooperation.

The cavity formed by the surrounding of the flared bell ring part is used for arranging the impeller.

The internal diameter of accepting the ring portion is greater than the internal diameter of spacing ring portion. I.e. the receiving ring portion is not in contact with the floating seal ring. I.e. there is a radial clearance between the floating seal ring and the receiving ring portion.

The cross section of the outer blocking cover is L-shaped, namely the corresponding cross sections of the limiting ring part and the buckling part are L-shaped.

The total axial dimension of the flat ring part, the buckling part and the bearing ring part is not more than the thickness of the body of the floating sealing ring.

The inner diameter of the floating sealing ring is smaller than that of the shaft hole of the end cover. When the fluid director is applied to the pump, the pump shaft passes through the shaft hole of end cover, the inner wall of floating seal ring embraces the pump shaft, forms sealed effect.

The utility model has the following beneficial effects: 1. the structure that keeps off lid and floating seal ring outward changes can improve the radial degree of floating seal ring, convenient production, assembly to avoid the dead condition of floating seal ring card to appear, can also form the effect of splining to floating seal ring simultaneously. 2. When being applied to the pump, can reduce pump operating noise. 3. The limit ring part of the outer blocking cover is buckled and abutted with the concave step ring, the outer blocking cover limits the radial floating degree of the floating sealing ring, the axial moving range of the floating sealing ring is effectively controlled, and the axial movement of the floating sealing ring is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

Figure 2 is a schematic illustration of an explosive structure according to the present invention.

Fig. 3 is a schematic sectional view of the outer cap holder according to the present invention.

FIG. 4 is a schematic cross-sectional view of a guide vane of the present invention.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

Example (b): as shown in fig. 1-3, the deflector for pump, including blower inlet housing 1, the one end of blower inlet housing is uncovered, and the other end sets up end cover 11 (end cover and blower inlet housing structure as an organic whole), set up shaft hole 12 on the end cover, the outside of end cover sets firmly outer fender cover seat 2, with outer fender cover seat complex keeps off the lid 3 outward, end cover 11, outer fender cover seat 2 and outer fender cover 3 surround and form the floating seal ring and hold chamber 4, the floating seal ring holds and sets up floating seal ring 5 in the chamber 4.

The end cover 11 supports the inner end of the floating seal ring 5 (the direction facing the inner cavity 13 of the guide shell 1 is an inner direction, and the direction facing away from the inner cavity 13 is an outer direction), the outer end of the floating seal ring 5 is provided with a convex ring 51, the peripheral wall of the convex ring is in a polygon prism shape, the outer baffle cover 3 is provided with a central opening 31, the central opening 31 is in a polygon prism shape, the convex ring 51 is inserted into the central opening 31, and the polygon prism-shaped peripheral wall of the convex ring is in a male-female nested fit with the polygon prism-shaped central opening, so that the floating seal ring is in a rotation-stopping fit with respect to the outer end cover. The structure of the outer baffle cover and the floating sealing ring is changed, so that the radial floating degree of the floating sealing ring can be improved. If the outer peripheral wall is polygonal bulge loop and passes polygonal central opening, it is right to say that the assembly of floating seal ring, simple to operate can effectively avoid the dead phenomenon of floating seal ring card that floating seal ring installation mistake caused. And simultaneously, the floating sealing ring can form a rotation stopping function. When being applied to the pump, can reduce pump operating noise.

Preferably, the method comprises the following steps: the inner diameter of the convex ring 51 is matched with the inner diameter of the body 52 of the floating seal ring (generally, the inner diameters of the convex ring 51 and the body 52 are the same, namely, the inner wall of the convex ring 51 and the inner wall of the body 52 are on the same cylindrical surface), an inner concave step ring 53 is formed between the outer peripheral wall of the convex ring 51 and the body 52 of the floating seal ring, the limit ring part 32 of the outer baffle cover is matched with the inner concave step ring 53, the limit ring part 32 of the outer baffle cover is in clearance fit with the inner concave step ring 53, the axial floating degree of the floating seal ring is limited, the axial moving range of the floating seal ring is effectively controlled, and the axial movement of the floating seal ring is reduced.

Outer fender lid seat 2 includes flat ring portion 21, with the outer flaring loudspeaker ring portion 22 that is body structure along being of flat ring portion, with the interior along the buckling parts 23 that are body structure's radial setting of body structure of flat ring portion, and with buckling parts are body structure's accepting ring portion 24, accept ring portion 24 and deviate from flat ring portion 21 (accepting ring portion 24 and flat ring portion 21 and setting respectively at the both ends direction of buckling parts 23 promptly), accept ring portion 24 with flat ring portion 21 is parallel, flat ring portion 21 buckling parts 23 with the section of accepting ring portion 24 is "z" font, accept ring portion 24 and accept spacing ring portion 32's inboard, outer fender lid detain the portion 33 with buckling parts 23 interference fit.

Normally, the flat ring part 21 is fixed on the outer wall (the direction departing from the inner cavity of the guide shell) of the end cover 11 of the guide shell by welding.

As shown in fig. 4, the flared collar portion 22 generally stands on the outer edge of the flat collar portion 21, and the cavity formed by the flared collar portion 22 is used to house the impeller 6.

Preferably, an end face of the hook portion 33 abuts against the flat ring portion 21.

The inner diameter of the receiving ring portion 24 is larger than the inner diameter of the limiting ring portion 32. I.e. the receiving ring portion 24 is not in contact with the floating seal ring 5. I.e. there is a radial clearance between the floating seal ring and the receiving ring portion.

The cross section of the outer blocking cover 3 is L-shaped, namely the corresponding cross sections of the limiting ring part 32 and the buckling part 33 are L-shaped.

The total axial dimension of the flat ring portion 21, the snap-in portion 23 and the receiving ring portion 24 is not greater than the thickness of the body 52 of the floating seal ring.

The inner diameter of the floating seal ring 5 is smaller than the inner diameter of the shaft hole 12 of the end cover 11. When the fluid director is applied to the pump, the pump shaft passes through the shaft hole of stator, passes in proper order the shaft hole 12 of end cover, the pump shaft is embraced to the inner wall of floating seal ring 5, forms sealed effect.

Claims

1. The fluid director for the pump comprises a diversion shell, one end of the diversion shell is open, the other end of the diversion shell is provided with an end cover, the end cover is provided with a shaft hole, the outer side of the end cover is fixedly provided with an outer baffle cover seat, the outer baffle cover is matched with the outer baffle cover seat, the end cover, the outer baffle cover seat and the outer baffle cover enclose to form a floating sealing ring accommodating cavity, a floating sealing ring is arranged in the floating sealing ring accommodating cavity, it is characterized in that the end cover supports the inner end of the floating sealing ring, the outer end of the floating sealing ring is provided with a convex ring, the outer peripheral wall of the convex ring is in a polygon prism shape, a central opening is arranged on the outer retaining cover, the central opening is in a polygon prism shape, the convex ring is inserted into the central opening, and the polygonal outer peripheral wall of the convex ring and the polygonal central opening are in male-female nested fit, so that the floating sealing ring is in rotation-stopping fit relative to the outer end cover.

2. The fluid director for pump according to claim 1, wherein the inner diameter of the convex ring is adapted to the inner diameter of the body of the floating seal ring, an inner concave step ring is formed between the outer peripheral wall of the convex ring and the body of the floating seal ring, the limit ring portion of the outer shield cover is in clearance fit with the inner concave step ring, and the limit ring portion limits the axial floating degree of the floating seal ring.

3. The fluid director for the pump according to claim 2, wherein the outer cover seat comprises a flat ring portion, a flared horn ring portion integrally formed with an outer edge of the flat ring portion, a buckling portion radially arranged integrally formed with an inner edge of the flat ring portion, and a receiving ring portion integrally formed with the buckling portion, wherein the receiving ring portion deviates from the flat ring portion and is parallel to the flat ring portion, the cross sections of the flat ring portion, the buckling portion and the receiving ring portion are in a z shape, the receiving ring portion is received on the inner side of the limiting ring portion, and the buckling portion of the outer cover is in interference snap fit with the buckling portion.

4. A deflector for a pump according to claim 3, wherein the internal diameter of the receiving ring portion is greater than the internal diameter of the retainer ring portion.

5. The deflector for pump according to claim 4, wherein the cross section of the outer shield cover is "L" shaped, that is, the corresponding cross sections of the limit ring portion and the buckle portion are "L" shaped.

6. A deflector for a pump according to any one of claims 3-5, characterised in that there is a radial gap between the floating seal ring and the receiving ring portion.

7. A deflector for a pump according to any one of claims 3-5, characterised in that the total axial dimension of the flat ring portion, the snap-in portion and the receiving ring portion is not greater than the thickness of the body of the floating seal ring.

8. A deflector for a pump according to claim 7, wherein the total axial dimension of the flat ring portion, the snap connection and the receiving ring portion is no greater than the thickness of the body of the floating seal ring.

9. A deflector for a pump according to any one of claims 1 to 5, wherein the inner diameter of the floating seal ring is smaller than the inner diameter of the axial bore of the end cap.

10. A deflector for a pump according to claim 8, wherein the floating seal ring has an inner diameter smaller than an inner diameter of the shaft hole of the end cap.