Balance assembly flushing structure

Abstract

The utility model discloses a balance assembly flushing structure. The shaft sleeve is used for rotating around the central axis of the shaft sleeve; the bushing concentrically sleeves the shaft sleeve, a rotating gap is formed between the bushing and the shaft sleeve, and the bushing is radially provided with a flow guide hole which is communicated with the rotating gap and penetrates through the bushing; the water inlet pipe communicates with the diversion hole; the flushing port flange is connected to one end of the water inlet pipe away from the diversion hole and used for connecting external water supply equipment.

Description

Technical Field

[0001] The present application belongs to the technical field of centrifugal pumps, and more specifically, relates to a balancing component flushing structure. Background Art

[0002] A centrifugal pump is a type of fluid conveying equipment widely used in industry, agriculture, and daily life. The main working principle of a centrifugal pump is to use the centrifugal force generated by the rotation of the impeller to suck in the fluid and lift it to the required height or pressure through the pump casing. In traditional centrifugal pump structures, the rotating shaft used to drive the centrifugal pump impeller is generally provided with a balancing assembly to ensure smooth rotation of the rotating shaft. The balancing assembly includes a sleeve mounted on the rotating shaft and a bushing mounted on the sleeve and used to contact the pump casing. Since there is a rotational gap between the sleeve and the sleeve, when the centrifugal pump pumps some liquid containing impurities, the impurities in the liquid may enter the rotational gap, causing greater wear on the sleeve or the sleeve, reducing the service life of the centrifugal pump. Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a balancing assembly flushing structure to solve the technical problem of short service life of centrifugal pumps in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is to provide a balancing component flushing structure, including:

[0005] The shaft sleeve is used to rotate around its own central axis;

[0006] a bushing concentrically sleeved on the shaft sleeve with a rotation gap therebetween, the bushing being provided with a guide hole along its radial direction communicating with the rotation gap and penetrating the bushing;

[0007] a water inlet pipe connected to the diversion hole;

[0008] The flushing port flange is connected to the end of the water inlet pipe away from the diversion hole and is used to connect to an external water supply device.

[0009] Optionally, a guide groove is provided on the surface of the shaft sleeve for forming the rotation gap, the guide groove is an arc-shaped groove, and the arching direction of the guide groove is opposite to the rotation direction of the shaft sleeve.

[0010] Optionally, the shaft sleeve is provided with a plurality of guide grooves evenly spaced along its circumference.

[0011] Optionally, the guide grooves are arranged in at least two rows along the axial direction of the sleeve, and the guide holes are located between two adjacent rows of the guide grooves.

[0012] Optionally, the guide grooves are symmetrically arranged on both sides of the guide hole, and the guide grooves on both sides of the guide hole cooperate to form an "eight"-shaped structure.

[0013] Optionally, the surface of the bushing used to form the rotation gap is recessed to form a first flow-uniforming annular groove coaxially arranged with the sleeve;

[0014] The first flow-uniform annular groove is connected to the flow guide hole.

[0015] Optionally, the balancing assembly flushing structure further includes a pump body, the shaft sleeve and the bushing are arranged inside the pump body, and the water inlet pipe is located outside the pump body;

[0016] The pump body is provided with a water inlet hole penetrating the pump body, and the water inlet hole is respectively connected to the guide hole and the water inlet pipe;

[0017] The pump body is further provided with a second flow-uniform annular groove connected to the water inlet hole, and the bushing is provided with a third flow-uniform annular groove corresponding to the second flow-uniform annular groove, and the third flow-uniform annular groove is connected to the guide hole.

[0018] Optionally, a flange ring is raised on a surface of one side of the bushing close to the pump body, and a positioning ring groove for accommodating the flange ring is provided on the pump body, and the flange ring is accommodated in the positioning ring groove.

[0019] Optionally, the balancing assembly flushing structure further includes a pin;

[0020] The flange ring is connected to the positioning ring groove through the pin shaft.

[0021] Optionally, the balancing assembly flushing structure further includes a half-splitting snap ring;

[0022] The half-circuit clamping ring abuts against the shaft sleeve and is used for clamping on the rotating shaft that drives the shaft sleeve to rotate.

[0023] The beneficial effect of the balancing component flushing structure provided in the present application is that: compared with the existing technology, in the balancing component flushing structure provided in the present application, a guide hole is provided on the bushing and the guide hole is connected to the external water supply equipment through the water inlet pipe. High-pressure cleaning water can be continuously introduced into the rotating gap through the water inlet pipe and the guide hole, thereby effectively preventing impurities in the liquid pumped by the centrifugal pump from entering the rotating gap, thereby significantly extending the service life of the centrifugal pump, which is far superior to the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 A schematic cross-sectional view of a flushing structure of a balancing assembly provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0027] Figure 3 A schematic diagram of the shaft sleeve structure provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the bushing structure provided in an embodiment of the present application.

[0029] Among them, the figure marks are: 100, sleeve; 101, guide groove; 200, bushing; 201, guide hole; 202, first uniform flow ring groove; 203, third uniform flow ring groove; 204, flange ring; 300, rotation gap; 400, water inlet pipe; 500, flushing port flange; 600, pump body; 601, water inlet hole; 602, second uniform flow ring groove; 603, positioning ring groove; 700, pin shaft; 800, half-circuit ring; 900, rotating shaft. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] Please also refer to Figures 1 to 4 Now, a balancing assembly flushing structure provided by an embodiment of the present application is described. The balancing assembly flushing structure includes a shaft sleeve 100, a bushing 200, a water inlet pipe 400, and a flushing port flange 500. Among them:

[0035] The shaft sleeve 100 is configured to be mounted on the rotating shaft 900 that drives the centrifugal pump impeller and to rotate about its own central axis. The bushing 200 is concentrically mounted on the shaft sleeve 100 and is configured to abut against the pump body 600 of the centrifugal pump. The shaft sleeve 100 and the bushing 200 cooperate with each other to enable the rotating shaft 900 to rotate smoothly. In this embodiment, a rotational gap 300 is defined between the bushing 200 and the shaft sleeve 100. The bushing 200 is provided with a guide hole 201 along its radial direction that connects to the rotational gap 300 and penetrates the bushing 200. The water inlet pipe 400 is connected to the guide hole 201. The flushing port flange 500 is connected to the end of the water inlet pipe 400 away from the guide hole 201 and is configured to connect to an external water supply device.

[0036] According to the above structure provided in this embodiment, since the bushing 200 is provided with a guide hole 201 and the guide hole 201 is connected to an external water supply device through the water inlet pipe 400, and the guide hole 201 is also connected to the rotating gap 300 between the bushing 200 and the shaft sleeve 100, high-pressure cleaning water can be continuously introduced into the rotating gap 300 through the water inlet pipe 400 and the guide hole 201. Therefore, when the centrifugal pump is pumping some liquid with particulate impurities, the high-pressure cleaning water introduced into the rotating gap 300 can effectively prevent impurities in the liquid pumped by the centrifugal pump from entering the rotating gap 300, thereby significantly extending the service life of the centrifugal pump, which is far superior to the prior art. In addition, the high-pressure cleaning water introduced into the rotating gap 300 is also beneficial for cooling the shaft sleeve 100 and the bushing 200, thereby further improving the service life of the two. It should be noted that in the embodiment or other embodiments of the present application, the bushing 200 may be provided with a plurality of guide holes 201 connected to the rotating gap 300 along its own circumference. In this embodiment, for the sake of convenience of explanation, six evenly distributed guide holes 201 are provided on the bushing 200, which can provide faster high-pressure water entry efficiency.

[0037] In another embodiment of this application, please refer to Figures 1 to 4 , the surface of the sleeve 100 used to form the rotating gap 300 is provided with a guide groove 101, the guide groove 101 is an arc-shaped groove and the arch direction of the guide groove 101 is opposite to the rotation direction of the sleeve 100. According to the above structure provided in this embodiment, when the sleeve 100 rotates relative to the bushing 200, since the water flow direction is the same as the arch direction of the guide groove 101, the guide groove 101 can quickly guide the high-pressure cleaning water to the surface of the sleeve 100 and form an effective protective water film, which is beneficial to further prevent impurities in the pumped liquid from entering the rotating gap 300. Further, in another embodiment of the present application, please refer to Figures 1 to 4 The sleeve 100 is provided with a plurality of guide grooves 101 evenly spaced along its circumference. According to the above structure in this embodiment, the plurality of guide grooves 101 can provide a better guide effect.

[0038] In another embodiment of this application, please refer to Figures 1 to 4 , the guide grooves 101 are arranged in at least two rows along the axial direction of the sleeve 100, and the guide holes 201 are located between two adjacent rows of guide grooves 101. According to the above structure provided in this embodiment, on the one hand, since the guide grooves 101 are arranged in at least two rows along the axial direction of the sleeve 100, a better guide effect can be provided; on the other hand, since the guide holes 201 are located between two adjacent rows of guide grooves 101, the two rows of guide grooves 101 simultaneously guide the high-pressure cleaning water from the guide holes 201, thereby providing a further low guide effect. Further, in another embodiment of the present application, please refer to Figures 1 to 4The guide grooves 101 are symmetrically arranged on both sides of the guide hole 201, and the guide grooves 101 on both sides of the guide hole 201 cooperate to form an "eight"-shaped structure. According to the above structure provided in this embodiment, the water flow on both sides of the guide hole 201 can move away from the guide hole in different directions, which can further improve the diffusion efficiency of the water flow in the rotating gap 300, facilitate the high-pressure cleaning water to quickly fill the rotating gap 300, and provide protection for the sleeve 100 and bushing 200, thereby achieving good protection effect.

[0039] In another embodiment of this application, please refer to Figures 1 to 4 The surface of the bushing 200, which is used to form the rotating gap 300, is recessed to form a first flow-uniforming annular groove 202, which is coaxial with the shaft sleeve 100. The first flow-uniforming annular groove 202 is connected to the guide hole 201. According to the above structure provided in this embodiment, the first flow-uniforming annular groove 202 can slow down and evenly distribute the high-pressure water flow delivered from the water inlet pipe 400 in the first flow-uniforming annular groove 202, which facilitates the high-pressure cleaning water to enter the rotating gap 300 at a stable rate and avoids the formation of a large number of bubbles in the rotating gap 300, which would affect the protective effect of the bushing 200 and the shaft sleeve 100.

[0040] In another embodiment of this application, please refer to Figures 1 to 4 The balancing component flushing structure also includes a pump body 600, a shaft sleeve 100 and a bushing 200 are arranged inside the pump body 600, and the water inlet pipe 400 is located outside the pump body 600. The pump body 600 is provided with a water inlet hole 601 that passes through the pump body 600, and the water inlet hole 601 is respectively connected to the guide hole 201 and the water inlet pipe 400. The pump body 600 is also provided with a second uniform flow annular groove 602 connected to the water inlet hole 601, and the bushing 200 is provided with a third uniform flow annular groove 203 corresponding to the second uniform flow annular groove 602, and the third uniform flow annular groove 203 is connected to the guide hole 201. According to the above structure provided in this embodiment, the pump body 600 can provide support for the shaft sleeve 100 and the bushing 200, but because the bushing 200 and the shaft sleeve 100 are arranged inside the pump body 600, the water inlet hole 601 provided on the pump body 600 is conducive to the communication between the water inlet pipe 400 and the guide hole 201. In addition, in this embodiment, the second uniform flow annular groove 602 provided on the pump body 600 and the third uniform flow annular groove 203 provided on the bushing 200 can cooperate with each other and make the water flow through the second uniform flow annular groove 602 and the third uniform flow annular groove 203 more stable and uniform, which is beneficial to further improve the protective effect of the bushing 200 and the shaft sleeve 100.

[0041] In another embodiment of this application, please refer to Figures 1 to 4, a flange ring 204 is raised on the surface of one side of the bushing 200 close to the pump body 600, and a positioning ring groove 603 for accommodating the flange ring 204 is provided on the pump body 600, and the flange ring 204 is accommodated in the positioning ring groove 603. According to the above structure provided in this embodiment, the bushing 200 can cooperate with the flange ring 204 and the positioning ring groove 603, so as to have a fixed positional relationship with the pump body 600. As a result, the second uniform flow ring groove 602 and the third uniform flow ring groove 203 can maintain a stable connection relationship, thereby preventing water from leaking from the gap between the second uniform flow ring groove 602 and the third uniform flow ring groove 203. In another embodiment of the present application, please refer to Figures 1 to 4 The balancing assembly flushing structure also includes a pin 700, through which the flange ring is connected to the positioning ring groove 603. Here, the pump body 600 is a horizontally split pump body structure of the prior art. According to the structure provided in this embodiment, the pin 700 can further improve the connection stability between the second uniform flow ring groove 602 and the third uniform flow ring groove 203.

[0042] In another embodiment of this application, please refer to Figures 1 to 4 The balancing assembly flushing structure further includes a split-half retaining ring 800, which abuts against the shaft sleeve 100 and is used to engage the rotating shaft 900 that drives the shaft sleeve 100 to rotate. According to the above structure provided in this embodiment, the split-half retaining ring 800 can effectively fix the position of the shaft sleeve 100 on the rotating shaft 900, thereby stably maintaining the shaft sleeve 100 on the rotating shaft 900 and maintaining a stable relative positional relationship between the guide groove 101 and the guide hole 201, which is conducive to improving the protective effect of the shaft sleeve 100 and the bushing 200 in this embodiment.

[0043] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A balancing component flushing structure, characterized in that: include: The shaft sleeve (100) is used to rotate around its own central axis; A bushing (200) is concentrically sleeved on the shaft sleeve (100) and has a rotation gap (300) between the bushing and the shaft sleeve (100); the bushing (200) is provided with a guide hole (201) along its radial direction, which is connected to the rotation gap (300) and penetrates the bushing (200); A water inlet pipe (400) connected to the diversion hole (201); A flushing port flange (500) connected to an end of the water inlet pipe (400) away from the diversion hole (201) and used for connecting to an external water supply device; A guide groove (101) is provided on the surface of the shaft sleeve (100) for forming the rotation gap (300); the guide groove (101) is an arc-shaped groove, and the arching direction of the guide groove (101) is opposite to the rotation direction of the shaft sleeve (100).

2. The balancing component flushing structure according to claim 1, characterized in that: The shaft sleeve (100) is provided with a plurality of guide grooves (101) evenly spaced along its circumference.

3. The balancing component flushing structure according to claim 2, characterized in that: The guide grooves (101) are arranged in at least two rows along the axial direction of the shaft sleeve (100), and the guide holes (201) are located between two adjacent rows of the guide grooves (101).

4. The balancing component flushing structure according to claim 3, characterized in that: The guide grooves (101) are symmetrically arranged on both sides of the guide hole (201), and the guide grooves (101) on both sides of the guide hole (201) cooperate to form an "eight"-shaped structure.

5. The balancing component flushing structure according to claim 1, characterized in that: The surface of the bushing (200) used to form the rotation gap (300) is recessed to form a first flow-uniforming annular groove (202) coaxially arranged with the shaft sleeve (100); The first flow-uniform annular groove (202) is connected to the flow guide hole (201).

6. The balancing component flushing structure according to claim 1, characterized in that: The balancing assembly flushing structure further comprises a pump body (600), the shaft sleeve (100) and the bushing (200) are arranged inside the pump body (600), and the water inlet pipe (400) is located outside the pump body (600); The pump body (600) is provided with a water inlet hole (601) penetrating the pump body (600), and the water inlet hole (601) is respectively connected to the guide hole (201) and the water inlet pipe (400); The pump body (600) is further provided with a second uniform flow annular groove (602) connected to the water inlet hole (601), and the bushing (200) is provided with a third uniform flow annular groove (203) corresponding to the second uniform flow annular groove (602), and the third uniform flow annular groove (203) is connected to the flow guide hole (201).

7. The balancing assembly flushing structure according to claim 6, characterized in that: A flange ring (204) is protruded from a surface of one side of the bushing (200) close to the pump body (600), and a positioning ring groove (603) for accommodating the flange ring (204) is provided on the pump body (600), and the flange ring (204) is accommodated in the positioning ring groove (603).

8. The balancing assembly flushing structure according to claim 7, characterized in that: The balancing assembly flushing structure further includes a pin (700); The flange ring is connected to the positioning ring groove (603) via the pin shaft (700).

9. The balancing component flushing structure according to claim 1, characterized in that: The balancing component flushing structure also includes a half-circuit clamp (800); The half-circuit clamp ring (800) abuts against the shaft sleeve (100) and is used to clamp onto a rotating shaft (900) that drives the shaft sleeve (100) to rotate.

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