阅读说明：本技术 磁力泵用内嵌式止推轴承组件及磁力泵 (Embedded thrust bearing assembly for magnetic pump and magnetic pump ) 是由 刘义昕 贺传斌 刘峰 孙月凤 于 2019-09-02 设计创作，主要内容包括：本发明磁力泵用内嵌式止推轴承组件及磁力泵,内嵌式止推轴承组件由止推轴承环(1)、外套(2)、波片弹簧垫(3)、轴承座(4)组成；止推轴承环(1)滑动配合安装在所述的轴承座(4)左侧端面开设的外止口槽(41)上；外套(2)防止止推轴承环(1)轴向窜出,在轴承座(4)的外圆部上开设有与止推轴承环(1)上对称开设的圆缺平面(12a、12b)配合的防转键块(42a、42b；在轴承座(4)左侧端面开设的外止口槽(41)的立端面(41’)与止推轴承环(1)的右侧端面之间设有波片弹簧垫(3),以防止止推轴承环(1)受轴向冲击力作用损坏。其特别适用于高温工况使用,使用寿命长。(the invention relates to an embedded thrust bearing assembly for a magnetic pump and the magnetic pump, wherein the embedded thrust bearing assembly consists of a thrust bearing ring (1), an outer sleeve (2), a wave plate spring pad (3) and a bearing seat (4); the thrust bearing ring (1) is arranged on an outer spigot groove (41) formed in the left end face of the bearing seat (4) in a sliding fit manner; the outer sleeve (2) prevents the thrust bearing ring (1) from axially jumping out, anti-rotation key blocks (42a, 42b) matched with segmental planes (12a, 12b) symmetrically arranged on the thrust bearing ring (1) are arranged on the outer circle part of the bearing seat (4), and a wave plate spring pad (3) is arranged between an upright end face (41') of an outer notch groove (41) arranged on the left end face of the bearing seat (4) and the right end face of the thrust bearing ring (1) to prevent the thrust bearing ring (1) from being damaged under the action of axial impact force.)

1. The embedded thrust bearing assembly for the magnetic pump is characterized by comprising a thrust bearing ring (1), an outer sleeve (2), a wave plate spring pad (3) and a bearing seat (4);

an outer spigot groove (41) is arranged on the left end face of the annular bearing seat (4);

An outer spigot platform (11) is arranged on the left end face of the annular thrust bearing ring (1); circle-cut planes (12a, 2b) are symmetrically arranged on the outer circle on the right side of the thrust bearing ring (1);

an inner spigot flange (21) is arranged at the left end of the outer sleeve (2);

The thrust bearing ring (1) is arranged on an outer spigot groove (41) formed in the left end face of the bearing seat (4) in a sliding fit manner;

the inner circular surface (20) of the outer sleeve (2) is matched with the outer circular surface (40) of the bearing seat (4), an inner spigot flange (21) arranged at the left end of the outer sleeve (2) is matched with an outer spigot platform (11) arranged on the left end surface of the thrust bearing ring (1) to axially limit the thrust bearing ring (1), and the right end of the outer sleeve (2) is fixedly connected with the outer circular surface (40) of the bearing seat (4);

Anti-rotation key blocks (42a, 42b) for complementing the excircle of the thrust bearing are arranged on the excircle part of the bearing seat (4) corresponding to the circle-cut planes (12a, 12b) symmetrically arranged on the excircle on the right side of the thrust bearing ring (1), and the inner side planes of the anti-rotation key blocks (42a, 42b) are in sliding clearance fit with the circle-cut planes (12a, 12b) on the thrust bearing so as to prevent the thrust bearing ring (1) from rotating on the bearing seat (4);

and a wave plate spring pad (3) is arranged between the vertical end face (41') of the outer spigot groove (41) formed in the left end face of the bearing seat (4) and the right end face of the thrust bearing ring (1).

2. the magnetic pump comprises a pump body, a pump cover and a pump shaft, wherein a left pump shaft sliding bearing device, a right pump shaft sliding bearing device, an impeller, an isolation sleeve, an inner magnetic rotor, an outer magnetic rotor and a connecting frame are arranged on the outer side of a left pump shaft sliding bearing (C1) and the outer side of a right pump shaft sliding bearing (C2), and the magnetic pump is characterized in that the thrust bearing (A) consists of a thrust bearing ring (1), an outer sleeve (2), a wave plate spring pad (3) and a bearing seat (4);

An outer spigot groove (41) is arranged on the left end face of the annular bearing seat (4);

An outer spigot platform (11) is arranged on the left end face of the annular thrust bearing ring (1); circle-cut planes (12a, 12b) are symmetrically arranged on the outer circle on the right side of the thrust bearing ring (1);

An inner spigot flange (21) is arranged at the left end of the outer sleeve (2);

The thrust bearing ring (1) is arranged on an outer spigot groove (41) formed in the left end face of the bearing seat (4) in a sliding fit manner;

the inner circular surface (20) of the outer sleeve (2) is matched with the outer circular surface (40) of the bearing seat (4), an inner spigot flange (21) arranged at the left end of the outer sleeve (2) is matched with an outer spigot platform (11) arranged on the left end surface of the thrust bearing ring (1) to axially limit the thrust bearing ring (1), and the right end of the outer sleeve (2) is fixedly connected with the outer circular surface (40) of the bearing seat (4);

Anti-rotation key blocks (42a, 42b) for complementing the excircle of the thrust bearing are arranged on the excircle part of the bearing seat (4) corresponding to the circle-cut planes (12a, 12b) symmetrically arranged on the excircle on the right side of the thrust bearing ring (1), and the inner side planes of the anti-rotation key blocks (42a, 42b) are in sliding clearance fit with the circle-cut planes (12a, 12b) on the thrust bearing so as to prevent the thrust bearing ring (1) from rotating on the bearing seat (4);

And a wave plate spring pad (3) is arranged between the vertical end face (41') of the outer spigot groove (41) formed in the left end face of the bearing seat (4) and the right end face of the thrust bearing ring (1).

Technical Field

the invention relates to a thrust bearing assembly for a magnetic pump and the magnetic pump using the same.

background

thrust bearings are arranged on two end faces, close to the sliding bearing, of the pump shaft of the magnetic pump, and play roles in balancing axial force and limiting. The thrust bearing is generally made of cemented carbide or a ceramic material, such as silicon carbide. When the silicon carbide material is adopted, the thrust bearing of the silicon carbide material is embedded in the metal bearing seat. Since the difference in thermal expansion coefficient between the silicon carbide material and the metal material is large, ceramic materials such as silicon carbide are also brittle. This makes mounting difficult. The embedding interference is small, and the high-temperature easily comes off; the silicon carbide material is easily hooped and broken due to the overlarge size.

disclosure of Invention

The invention aims to provide an embedded thrust bearing assembly for a magnetic pump and the magnetic pump using the embedded thrust bearing assembly. The thrust bearing is made of silicon carbide, is suitable for high-temperature working conditions, has elasticity in the axial direction, and has good effects of balancing axial force and preventing collision.

The invention discloses an embedded thrust bearing assembly for a magnetic pump, which consists of a thrust bearing ring 1, an outer sleeve 2, a wave plate spring pad 3 and a bearing seat 4.

An outer spigot groove 41 is arranged on the left end face of the annular bearing seat 4; an outer spigot platform 11 is arranged on the left end face of the annular thrust bearing ring 1; circle-cut planes 12a and 2b are symmetrically arranged on the outer circle on the right side of the thrust bearing ring 1; the left end of the outer sleeve 2 is provided with an inner spigot flange 21; the thrust bearing ring 1 is arranged on an outer spigot groove 41 arranged on the left end face of the bearing seat 4 in a sliding fit manner; the inner circular surface 20 of the outer sleeve 2 is matched with the outer circular surface 40 of the bearing seat 4, the inner spigot flange 21 arranged at the left end of the outer sleeve 2 is matched with the outer spigot platform 11 arranged on the left end surface of the thrust bearing ring 1 to axially limit the thrust bearing ring 1, the right end of the outer sleeve 2 is fixedly connected with the outer circular surface 40 of the bearing seat 4, and the outer sleeve 2 prevents the thrust bearing ring 1 from axially jumping out;

Anti-rotation key blocks 42a and 42b for complementing the excircle of the thrust bearing are arranged on the excircle part of the bearing seat 4 corresponding to the circle-cut planes 12a and 12b symmetrically arranged on the excircle on the right side of the thrust bearing ring 1, and the inner side planes of the anti-rotation key blocks 42a and 42b are in sliding clearance fit with the circle-cut planes 12a and 12b on the thrust bearing so as to prevent the thrust bearing ring 1 from rotating on the bearing seat 4;

and a wave plate spring pad 3 is arranged between the vertical end face 41' of the outer stop groove 41 formed in the left end face of the bearing seat 4 and the right end face of the thrust bearing ring 1, the wave plate spring pad 3 elastically compresses the thrust bearing ring 1 in the axial direction, and the action of the axial force applied to the thrust bearing ring 1 is buffered, so that the thrust bearing ring 1 is prevented from being damaged by the action of the axial impact force.

According to the embedded thrust bearing assembly, the bearing seat 4 and the thrust bearing ring 1 are embedded in the gap between the metal thrust bearing seat and the silicon carbide thrust bearing, the structure is good, the embedded thrust bearing assembly is particularly suitable for being used under a high-temperature working condition, the axial elasticity is achieved, the good effect on axial force balance and impact prevention is achieved, and the service life is long.

the invention discloses a magnetic pump, which comprises a pump body, a pump cover, a pump shaft left sliding bearing, a pump shaft right sliding bearing, an impeller, an isolation sleeve, an inner magnetic rotor, an outer magnetic rotor and a connecting frame, wherein thrust bearings A are respectively arranged on the outer side of the pump shaft left sliding bearing C1 and the outer side of the pump shaft right sliding bearing C2, and each thrust bearing A is composed of the embedded thrust bearing assembly.

Drawings

fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

fig. 3 is a schematic structural view of an embodiment of the thrust bearing ring 1.

fig. 4 is a sectional view B-B of fig. 3.

fig. 5 is a schematic structural diagram of an embodiment of the bearing seat 4.

Fig. 6 is a cross-sectional view C-C of fig. 5.

fig. 7 is a schematic structural diagram of an embodiment of the magnetic pump of the present invention.

Detailed Description

The invention discloses an embedded thrust bearing assembly for a magnetic pump, which consists of a thrust bearing ring 1, an outer sleeve 2, a wave plate spring pad 3 and a bearing seat 4.

An outer spigot groove 41 is arranged on the left end face of the annular bearing seat 4;

An outer spigot platform 11 is arranged on the left end face of the annular thrust bearing ring 1; circle-cut planes 12a and 12b are symmetrically arranged on the outer circle on the right side of the thrust bearing ring 1;

The left end of the outer sleeve 2 is provided with an inner spigot flange 21;

The thrust bearing ring 1 is arranged on an outer spigot groove 41 arranged on the left end face of the bearing seat 4 in a sliding fit manner;

the inner circular surface 20 of the outer sleeve 2 is matched with the outer circular surface 40 of the bearing seat 4, the inner spigot flange 21 arranged at the left end of the outer sleeve 2 is matched with the outer spigot platform 11 arranged on the left end surface of the thrust bearing ring 1 to axially limit the thrust bearing ring 1, the right end of the outer sleeve 2 is fixedly connected with the outer circular surface 40 of the bearing seat 4 in a spot welding manner, and the outer sleeve 2 prevents the thrust bearing ring 1 from axially jumping out;

Anti-rotation key blocks 42a and 42b which are corresponding to circle-cut planes 12a and 12b symmetrically arranged on the right outer circle of the thrust bearing ring 1 and complement the outer circle of the thrust bearing are arranged on the outer circle part of the bearing seat 4, and the inner side planes of the anti-rotation key blocks 42a and 42b are in sliding clearance fit with the circle-cut planes 12a and 12b on the thrust bearing so as to prevent the thrust bearing ring 1 from rotating on the bearing seat 4;

And a wave plate spring pad 3 is arranged between the vertical end face 41' of the outer stop groove 41 formed in the left end face of the bearing seat 4 and the right end face of the thrust bearing ring 1, the wave plate spring pad 3 elastically compresses and supports the thrust bearing ring 1 in the axial direction, the action of the axial force applied to the thrust bearing ring 1 is buffered, and the thrust bearing ring 1 is prevented from being damaged by the action of the axial impact force.

the invention discloses a magnetic pump, which comprises a pump body, a pump cover, a pump shaft left sliding bearing, a pump shaft right sliding bearing, an impeller, an isolation sleeve, an inner magnetic rotor, an outer magnetic rotor and a connecting frame, wherein thrust bearings A are respectively arranged on the outer side of the pump shaft left sliding bearing C1 and the outer side of the pump shaft right sliding bearing C2, and each thrust bearing A is composed of the embedded thrust bearing assembly.