Support device for pipeline pump impeller and pipeline pump

Abstract

The invention relates to the technical field of pipeline pumps, and provides a supporting device for a pipeline pump impeller and a pipeline pump. The supporting device for the pipeline pump impeller comprises: a thrust plate, a rotor hub, a first elastic body, a second elastic body and an elastic bushing; the thrust plate is used to be connected to a stator shaft; the thrust plate has a first end face and a second end face that are separated from each other; the rotor hub is sleeved on the stator shaft, and the thrust plate is arranged in a groove of the rotor hub; the rotor hub is used to be connected to the impeller; the first elastic body and the second elastic body are arranged on both sides of the thrust plate; the first elastic body is respectively connected to the groove wall of the groove and the first thrust pad, and the first thrust pad is detachably connected to the first end face; the second elastic body is respectively connected to the groove wall of the groove and the second thrust pad, and the second thrust pad is detachably connected to the second end face; the elastic bushing is arranged between the rotor hub and the supporting pad on the stator shaft; the invention realizes radial and axial vibration reduction of the impeller on the stator shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline pumps, and in particular to a supporting device for a pipeline pump impeller and a pipeline pump. Background Art

[0002] The pipeline pump is a type of centrifugal pump. The inlet diameter of the pipeline pump is the same as the outlet diameter. Therefore, the pipeline pump can be installed at any position in the pipeline and has good adaptability.

[0003] The impeller of the existing pipeline pump is rotatably installed on the stator shaft. When the impeller rotates, the fluid will have a certain impact on the impeller, causing the impeller to vibrate, resulting in a large operating noise of the pipeline pump. The vibration of the impeller can easily damage the stator shaft, resulting in a short service life of the pipeline pump. Summary of the invention

[0004] The invention provides a supporting device for a pipeline pump impeller and a pipeline pump, which are used to solve or improve the problems of large vibration noise and easy damage of the stator shaft in the existing pipeline pump.

[0005] The present invention provides a support device for a pipeline pump impeller, comprising: a thrust plate, a rotor hub, a first elastic body, a second elastic body and an elastic bushing; the thrust plate is used to connect with a stator shaft; the thrust plate has a first end face and a second end face that are separated from each other along the axial direction of the stator shaft; the rotor hub is sleeved on the stator shaft, the inner wall surface of the rotor hub close to the stator shaft is provided with a groove, and the thrust plate is arranged in the groove; the rotor hub is used to connect with an impeller; the first elastic body and the second elastic body are separately arranged on the thrust plate along the axial direction of the stator shaft. two sides of the force plate; one end of the first elastomer is connected to the groove wall of the groove, the other end of the first elastomer is connected to the first thrust pad, and the first thrust pad is detachably connected to the first end face; one end of the second elastomer is connected to the groove wall of the groove, the other end of the second elastomer is connected to the second thrust pad, and the second thrust pad is detachably connected to the second end face; a supporting pad is sleeved on the stator shaft, the elastic bushing is arranged between the rotor hub and the supporting pad, and the elastic bushing is respectively connected to the rotor hub and the supporting pad.

[0006] According to a supporting device for a pipeline pump impeller provided by the present invention, a cavity is provided in the elastic bushing; the elastic bushing has an initial state and a deformed state, and the volume of the cavity in the initial state is greater than the volume of the cavity in the deformed state.

[0007] According to a support device for a pipeline pump impeller provided by the present invention, the support device for the pipeline pump impeller also includes: a bushing support seat; two thrust plates are provided, and the two thrust plates are arranged at intervals along the axial direction of the stator shaft, and the bushing support seat is arranged between the two thrust plates; one end of the bushing support seat is detachably connected to the bottom of the groove, and the other end of the bushing support seat is connected to the elastic bushing.

[0008] According to a supporting device for a pipeline pump impeller provided by the present invention, the inner diameter of the groove is larger than the outer diameter of the thrust plate.

[0009] According to a supporting device for a pipeline pump impeller provided by the present invention, the rotor hub comprises: a rotor hub body, a first end cover and a second end cover; the first end cover and the second end cover are arranged along the axial direction of the stator shaft, the first end cover is detachably connected to one end of the rotor hub body, and the second end cover is detachably connected to the other end of the rotor hub body; the first end cover, the rotor hub body and the second end cover form the groove; one end of the first elastomer is connected to the first end cover, and one end of the second elastomer is connected to the second end cover.

[0010] According to a support device for a pipeline pump impeller provided by the present invention, the support device for the pipeline pump impeller also includes: a first thrust pad seat; the first thrust pad seat is arranged between the first elastomer and the first thrust pad, and the first thrust pad seat is respectively connected to the first elastomer and the first thrust pad.

[0011] According to a support device for a pipeline pump impeller provided by the present invention, the support device for the pipeline pump impeller also includes: a second thrust pad seat; the second thrust pad seat is arranged between the second elastomer and the second thrust pad, and the second thrust pad seat is respectively connected to the second elastomer and the second thrust pad.

[0012] According to a support device for a pipeline pump impeller provided by the present invention, the support device for a pipeline pump impeller also includes: a radial support seat; the radial support seat is arranged between the elastic bushing and the support shoe, and the radial support seat is respectively connected to the elastic bushing and the support shoe.

[0013] According to a support device for a pipeline pump impeller provided by the present invention, the support device for the pipeline pump impeller also includes: a sleeve; the sleeve is arranged between the support shoe and the stator shaft, the sleeve is connected to the stator shaft, and a preset gap is formed between the sleeve and the support shoe.

[0014] The present invention also provides a pipeline pump, comprising: a stator shaft, an impeller, a rotary drive mechanism and the supporting device for the pipeline pump impeller as described above; the supporting device for the pipeline pump impeller is arranged on the stator shaft, the impeller is connected to the supporting device for the pipeline pump impeller, and the rotary drive mechanism is used to drive the impeller to rotate.

[0015] The support device for the impeller of a pipeline pump and the pipeline pump provided by the present invention enable the impeller to achieve vibration reduction and buffering in the axial and radial directions of the stator shaft by arranging a first elastic body, a second elastic body and an elastic bushing; during the operation of the pipeline pump, a rotary drive mechanism drives the rotor hub and the impeller to rotate relative to the stator shaft, and when the impeller contacts the fluid, the fluid will generate a force on the impeller, and the component of the force along the axial direction of the stator shaft will drive the rotor hub to axially move on the stator shaft; wherein the axial movement direction of the rotor hub depends on the rotation direction of the impeller;

[0016] When the rotor hub moves to the right, the first thrust washer moves toward the first end face and contacts the first end face, and the first elastic body is compressed. On the one hand, the elastic force generated by the compression of the first elastic body can assist the rotor hub to return to the correct position, and on the other hand, the first elastic body can play a vibration reduction and buffering role for the axial movement of the rotor hub, thereby reducing the vibration of the impeller; when the rotor hub moves to the left, the second thrust washer moves toward the second end face and contacts the second end face, and the second elastic body is compressed. On the one hand, the elastic force generated by the compression of the second elastic body can assist the rotor hub to return to the correct position, and on the other hand, the second elastic body can play a vibration reduction and buffering role for the axial movement of the rotor hub, thereby reducing the vibration of the impeller; thereby achieving vibration reduction and buffering of the impeller in the axial direction of the stator shaft;

[0017] At the same time, when the impeller is rotating, the fluid will also generate a force on the impeller along the radial direction of the stator shaft, causing the center of the impeller to deviate from the center of the stator shaft. When the center of the impeller deviates greatly from the center of the stator shaft, the impeller drives the rotor hub to deviate, and the bearing pad on the side away from the deviation contacts the stator shaft. The rotor hub squeezes the elastic bushing. On the one hand, the elastic force generated by the compression of the elastic bushing can assist the impeller to return to the correct position. On the other hand, the elastic force generated by the compression of the elastic bushing can play a vibration reduction and buffering role for the radial deviation of the impeller, thereby reducing the vibration of the impeller, thereby achieving vibration reduction and buffering of the impeller in the radial direction of the stator shaft.

[0018] The present invention realizes vibration reduction and buffering of the impeller in the axial direction of the stator shaft by arranging the first elastomer and the second elastomer, and realizes vibration reduction and buffering of the impeller in the radial direction of the stator shaft by arranging the elastic bushing, thereby reducing the noise generated by the vibration of the impeller, and at the same time reducing the impact of the impeller on the stator shaft, thereby extending the service life of the stator shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a support device for a pipeline pump impeller provided by the present invention;

[0021] Reference numerals:

[0022] 1: thrust plate; 2: rotor hub; 21: rotor hub body; 22: first end cover; 23: second end cover; 3: first elastomer; 4: second elastomer; 5: elastic bushing; 6: stator shaft; 7: impeller; 8: first thrust pad; 9: second thrust pad; 10: bearing pad; 11: bushing support seat; 12: first thrust pad seat; 13: second thrust pad seat; 14: radial bearing seat; 15: shaft sleeve. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] Combine the following Figure 1 The invention describes a support device for a pipeline pump impeller and a pipeline pump.

[0027] like Figure 1 As shown, the supporting device for the pipeline pump impeller shown in this embodiment includes: a thrust plate 1, a rotor hub 2, a first elastic body 3, a second elastic body 4 and an elastic bushing 5.

[0028] The thrust plate 1 is used to connect with the stator shaft 6; the thrust plate 1 has a first end face and a second end face that are opposite to each other along the axial direction of the stator shaft 6; the rotor hub 2 is sleeved on the stator shaft 6, and a groove is provided on the inner wall surface of the rotor hub 2 close to the stator shaft 6, and the thrust plate 1 is arranged in the groove; the rotor hub 2 is used to connect with the impeller 7; the first elastomer 3 and the second elastomer 4 are arranged on both sides of the thrust plate 1 along the axial direction of the stator shaft 6; one end of the first elastomer 3 is connected to the groove wall of the groove, and the other end of the first elastomer 3 is connected to the first thrust washer 8, and the first thrust washer 8 is detachably connected to the first end face; one end of the second elastomer 4 is connected to the groove wall of the groove, and the other end of the second elastomer 4 is connected to the second thrust washer 9, and the second thrust washer 9 is detachably connected to the second end face; a bearing washer 10 is sleeved on the stator shaft 6, and an elastic bushing 5 is arranged between the rotor hub 2 and the bearing washer 10, and the elastic bushing 5 is respectively connected to the rotor hub 2 and the bearing washer 10.

[0029] Specifically, the support device for the pipeline pump impeller shown in this embodiment is provided with a first elastic body 3, a second elastic body 4 and an elastic bushing 5, so that the impeller 7 can achieve vibration reduction and buffering in the axial and radial directions of the stator shaft 6; during the operation of the pipeline pump, the rotary drive mechanism drives the rotor hub 2 and the impeller 7 to rotate relative to the stator shaft 6, and when the impeller 7 contacts the fluid, the fluid will generate a force on the impeller 7, and the axial component of the force along the stator shaft 6 will drive the rotor hub 2 to axially move on the stator shaft 6; wherein, the axial movement direction of the rotor hub 2 depends on the rotation direction of the impeller 7;

[0030] When the rotor hub 2 moves to the right, the first thrust washer 8 moves toward the first end face and contacts the first end face, and the first elastic body 3 is compressed. On the one hand, the elastic force generated by the compression of the first elastic body 3 can assist the rotor hub 2 to return to the center, and on the other hand, the first elastic body 3 can play a vibration reduction and buffering role for the axial movement of the rotor hub 2, thereby reducing the vibration of the impeller 7; when the rotor hub 2 moves to the left, the second thrust washer 9 moves toward the second end face and contacts the second end face, and the second elastic body 4 is compressed. On the one hand, the elastic force generated by the compression of the second elastic body 4 can assist the rotor hub 2 to return to the center, and on the other hand, the second elastic body 4 can play a vibration reduction and buffering role for the axial movement of the rotor hub 2, thereby reducing the vibration of the impeller 7; thereby achieving vibration reduction and buffering of the impeller 7 in the axial direction of the stator shaft 6;

[0031] At the same time, during the rotation of the impeller 7, the fluid will also generate a force on the impeller 7 along the radial direction of the stator shaft 6, so that the center of the impeller 7 is offset from the center of the stator shaft 6. When the center of the impeller 7 is greatly offset from the center of the stator shaft 6, the impeller 7 drives the rotor hub 2 to be offset, and the bearing pad 10 away from the offset side contacts the stator shaft 6. The rotor hub 2 squeezes the elastic bushing 5. On the one hand, the elastic force generated by the compression of the elastic bushing 5 can assist the impeller 7 to return to the correct position. On the other hand, the elastic force generated by the compression of the elastic bushing 5 can play a vibration reduction and buffering role for the radial offset of the impeller 7, thereby reducing the vibration of the impeller 7, thereby achieving vibration reduction and buffering of the impeller in the radial direction of the stator shaft 6.

[0032] In this embodiment, the first elastomer 3 and the second elastomer 4 are provided to achieve vibration reduction and buffering of the impeller 7 in the axial direction of the stator shaft 6. The elastic bushing 5 is provided to achieve vibration reduction and buffering of the impeller 7 in the radial direction of the stator shaft 6, thereby reducing the noise generated by the vibration of the impeller 7, and at the same time reducing the impact of the impeller 7 on the stator shaft, thereby extending the service life of the stator shaft 6.

[0033] It should be noted that during the operation of the pipeline pump, the fluid can enter the groove, thereby forming a liquid film between the first thrust washer 8 and the first end face, between the second thrust washer 9 and the second end face, and between the support washer 10 and the stator shaft 6. The liquid film plays a lubricating role, thereby reducing the wear of the first thrust washer 8, the first end face, the second thrust washer 9, the second end face, the support washer 10 and the stator shaft 6; accordingly, when the first elastomer 3 and the second elastomer 4 are in the initial state, the gap between the first thrust washer 8 and the second thrust washer 9 is greater than the thickness of the thrust plate 1, and the inner diameter of the support washer 10 is greater than the outer diameter of the stator shaft 6; the thrust plate 1 and the stator shaft 6 can be either a split structure or an integrated structure.

[0034] Among them, the material of the first elastomer 3 and the second elastomer 4 is a non-metallic high-damping material; the material of the first thrust washer 8, the second thrust washer 9 and the supporting washer 10 can be selected according to the type of fluid actually pumped. For example, when the pumped fluid is liquid water, the material of the first thrust washer 8, the second thrust washer 9 and the supporting washer 10 can be selected from non-metallic polymer materials, specifically PEEK, thereby improving the water lubrication performance of the first thrust washer 8, the second thrust washer 9 and the supporting washer 10.

[0035] In some embodiments, Figure 1 As shown, the elastic bushing 5 shown in this embodiment is provided with a cavity therein; the elastic bushing 5 has an initial state and a deformed state, and the volume of the cavity in the initial state is greater than the volume of the cavity in the deformed state.

[0036] Specifically, by setting a cavity in the elastic bushing 5, the elastic bushing 5 is hollow, so that the elastic bushing 5 has good deformation performance; when the axis of the rotor hub 2 coincides with the axis of the stator shaft 6, the elastic bushing 5 is in an initial state; when the impeller 7 drives the rotor hub 2 to radially offset, the elastic bushing 5 away from the offset side is compressed, and the elastic bushing 5 is in a deformed state, thereby compressing the cavity and reducing the volume of the cavity.

[0037] In some embodiments, Figure 1 As shown, the supporting device for the pipeline pump impeller shown in this embodiment also includes: a bushing support seat 11; two thrust plates 1 are provided, and the two thrust plates 1 are arranged at intervals along the axial direction of the stator shaft 6, and the bushing support seat 11 is arranged between the two thrust plates 1; one end of the bushing support seat 11 is detachably connected to the bottom of the groove, and the other end of the bushing support seat 11 is connected to the elastic bushing 5.

[0038] Specifically, by setting two thrust plates 1, correspondingly, two first elastomers 3, two second elastomers 4, two first thrust washers 8 and two second thrust washers 9 are each provided, thereby improving the stability of the rotor hub 2 and the impeller 7 support; the bushing support seat 11 is connected to the bottom of the groove by screws, thereby facilitating the operator to disassemble and assemble the elastic bushing 5; wherein, the first elastomer 3 located on the left side of the bushing support seat 11 is connected to the groove wall of the groove, the first elastomer 3 located on the right side of the bushing support seat 11 is connected to the bushing support seat 11, the second elastomer 4 located on the left side of the bushing support seat 11 is connected to the bushing support seat 11, and the second elastomer 4 located on the right side of the bushing support seat 11 is connected to the groove wall of the groove.

[0039] In some embodiments, Figure 1 As shown, the inner diameter of the groove shown in this embodiment is larger than the outer diameter of the thrust plate 1 .

[0040] Specifically, as described above, the bearing shoe 10 and the stator shaft 6 are lubricated by a liquid film. To facilitate the fluid to enter between the two thrust plates 1 so that a liquid film is formed between the bearing shoe 10 and the stator shaft 6, a gap needs to be reserved between the outer wall of the thrust plate 1 and the bottom of the groove, that is, the inner diameter of the groove is larger than the outer diameter of the thrust plate 1.

[0041] In some embodiments, Figure 1 As shown, the rotor hub 2 shown in this embodiment includes: a rotor hub body 21, a first end cover 22 and a second end cover 23; the first end cover 22 and the second end cover 23 are arranged along the axial direction of the stator shaft 6, the first end cover 22 is detachably connected to one end of the rotor hub body 21, and the second end cover 23 is detachably connected to the other end of the rotor hub body 21; the first end cover 22, the rotor hub body 21 and the second end cover 23 form a groove; one end of the first elastomer 3 is connected to the first end cover 22, and one end of the second elastomer 4 is connected to the second end cover 23.

[0042] Specifically, the first end cover 22 and the second end cover 23 are connected to the rotor hub body 21 by screws, thereby facilitating the operator to disassemble and assemble the first thrust washer 8 and the second thrust washer 9; when there are two first elastomers 3 and two second elastomers 4, the second elastomer 4 located on the left side of the bushing support seat 11 is indirectly connected to the second end cover 23 through the bushing support seat 11 and the rotor hub body 21 in sequence, and the first elastomer 3 located on the right side of the bushing support seat 11 is indirectly connected to the first end cover 22 through the bushing support seat 11 and the rotor hub body 21 in sequence.

[0043] In some embodiments, Figure 1 As shown, the supporting device for the pipeline pump impeller shown in this embodiment also includes: a first thrust pad seat 12; the first thrust pad seat 12 is arranged between the first elastomer 3 and the first thrust pad 8, and the first thrust pad seat 12 is connected to the first elastomer 3 and the first thrust pad 8 respectively.

[0044] Specifically, by setting the first thrust washer seat 12 between the first elastomer 3 and the first thrust washer 8, the elastic force generated by the first elastomer 3 is prevented from damaging the first thrust washer 8, thereby ensuring the flatness of the first thrust washer 8 and further ensuring the lubrication effect between the first thrust washer 8 and the first end face, thereby improving the stability of the pipeline pump operation.

[0045] In some embodiments, Figure 1 As shown, the supporting device for the pipeline pump impeller shown in this embodiment also includes: a second thrust pad seat 13; the second thrust pad seat 13 is arranged between the second elastic body 4 and the second thrust pad 9, and the second thrust pad seat 13 is connected to the second elastic body 4 and the second thrust pad 9 respectively.

[0046] Specifically, by setting the second thrust washer seat 13 between the second elastomer 4 and the second thrust washer 9, the elastic force generated by the second elastomer 4 is prevented from damaging the second thrust washer 9, thereby ensuring the flatness of the second thrust washer 9 and further ensuring the lubrication effect between the second thrust washer 9 and the second end face, thereby improving the stability of the pipeline pump operation.

[0047] In some embodiments, Figure 1 As shown, the support device for the pipeline pump impeller shown in this embodiment also includes: a radial support seat 14; the radial support seat 14 is arranged between the elastic bushing 5 and the support shoe 10, and the radial support seat 14 is connected to the elastic bushing 5 and the support shoe 10 respectively.

[0048] Specifically, by arranging a radial support seat 14 between the elastic bushing 5 and the bearing shoe 10, the elastic force generated by the elastic bushing 5 is prevented from damaging the bearing shoe 10, thereby ensuring the lubrication effect between the bearing shoe 10 and the stator shaft 6 and improving the working stability of the pipeline pump.

[0049] In some embodiments, Figure 1 As shown, the support device for the pipeline pump impeller shown in this embodiment also includes: a sleeve 15; the sleeve 15 is arranged between the support shoe 10 and the stator shaft 6, the sleeve 15 is connected to the stator shaft 6, and a preset gap is formed between the sleeve 15 and the support shoe 10.

[0050] Specifically, by setting a sleeve 15 between the bearing pad 10 and the stator shaft 6, when the rotor hub 2 drives the bearing pad 10 to rotate relative to the stator shaft 6, sliding friction is formed between the bearing pad 10 and the sleeve 15, thereby avoiding the bearing pad 10 from directly rubbing the stator shaft 6 and improving the service life of the stator shaft 6; by setting a preset gap between the sleeve 15 and the bearing pad 10, a liquid film can be formed between the sleeve 15 and the bearing pad 10, thereby reducing the friction between the sleeve 15 and the bearing pad 10.

[0051] This embodiment also provides a pipeline pump, including: a stator shaft 6, an impeller 7, a rotary drive mechanism and a supporting device for the pipeline pump impeller as described above; the supporting device for the pipeline pump impeller is arranged on the stator shaft 6, the impeller 7 is connected to the supporting device for the pipeline pump impeller, and the rotary drive mechanism is used to drive the impeller 7 to rotate.

[0052] Since the pipeline pump adopts the supporting device for the pipeline pump impeller shown in the above embodiment, the specific structure of the supporting device for the pipeline pump impeller refers to the above embodiment. Since the pipeline pump adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A support device for a pipeline pump impeller, characterized in that: include: A thrust plate, a rotor hub, a first elastic body, a second elastic body and an elastic bushing; The thrust plate is used to be connected to the stator shaft; The thrust plate has a first end surface and a second end surface which are separated from each other along the axial direction of the stator shaft; The rotor hub is sleeved on the stator shaft, the inner wall surface of the rotor hub close to the stator shaft is provided with a groove, and the thrust plate is arranged in the groove; the rotor hub is used to connect with the impeller; The first elastic body and the second elastic body are arranged on both sides of the thrust plate along the axial direction of the stator shaft; one end of the first elastic body is connected to the groove wall of the groove, and the other end of the first elastic body is connected to the first thrust washer, and the first thrust washer is detachably connected to the first end face; one end of the second elastic body is connected to the groove wall of the groove, and the other end of the second elastic body is connected to the second thrust washer, and the second thrust washer is detachably connected to the second end face; The stator shaft is sleeved with a bearing shoe, the elastic bushing is arranged between the rotor hub and the bearing shoe, and the elastic bushing is connected to the rotor hub and the bearing shoe respectively; The support device for the pipeline pump impeller also includes: a bushing support seat; There are two thrust plates, which are arranged at intervals along the axial direction of the stator shaft, and the bushing support seat is arranged between the two thrust plates; One end of the bushing support seat is detachably connected to the groove bottom of the groove, and the other end of the bushing support seat is connected to the elastic bushing; The support device for the pipeline pump impeller also includes: a radial support seat; The radial support seat is arranged between the elastic bushing and the support pad, and the radial support seat is connected to the elastic bushing and the support pad respectively.

2. The support device for pipeline pump impeller according to claim 1, characterized in that: A cavity is provided in the elastic bushing; the elastic bushing has an initial state and a deformed state, and the volume of the cavity in the initial state is greater than the volume of the cavity in the deformed state.

3. The support device for pipeline pump impeller according to claim 1, characterized in that: The inner diameter of the groove is greater than the outer diameter of the thrust plate.

4. The support device for pipeline pump impeller according to claim 1, characterized in that: The rotor hub comprises: a rotor hub body, a first end cover and a second end cover; The first end cover and the second end cover are arranged along the axial direction of the stator shaft, the first end cover is detachably connected to one end of the rotor hub body, and the second end cover is detachably connected to the other end of the rotor hub body; The first end cover, the rotor hub body and the second end cover form the groove; one end of the first elastic body is connected to the first end cover, and one end of the second elastic body is connected to the second end cover.

5. The support device for pipeline pump impeller according to claim 1, characterized in that: The support device for the pipeline pump impeller also includes: a first thrust shoe seat; The first thrust pad seat is arranged between the first elastic body and the first thrust pad, and the first thrust pad seat is connected to the first elastic body and the first thrust pad respectively.

6. The support device for pipeline pump impeller according to claim 1, characterized in that: The support device for the pipeline pump impeller also includes: a second thrust shoe seat; The second thrust pad seat is arranged between the second elastic body and the second thrust pad, and the second thrust pad seat is connected to the second elastic body and the second thrust pad respectively.

7. The support device for pipeline pump impeller according to claim 1, characterized in that: The support device for the pipeline pump impeller also includes: a shaft sleeve; The shaft sleeve is arranged between the bearing bush and the stator shaft, the shaft sleeve is connected to the stator shaft, and a preset gap is formed between the shaft sleeve and the bearing bush.

8. A pipeline pump, characterized in that: include: A stator shaft, an impeller, a rotary drive mechanism and a support device for a pipeline pump impeller as claimed in any one of claims 1 to 7; The support device for the pipeline pump impeller is arranged on the stator shaft, the impeller is connected to the support device for the pipeline pump impeller, and the rotary drive mechanism is used to drive the impeller to rotate.

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