High-lift submerged slurry pump

Abstract

The utility model provides a high-lift submerged slurry pump, which belongs to the field of pumps, and comprises a main shaft and a supporting mechanism, one end of the main shaft is connected with a driving motor, the other end of the main shaft is used for installing an impeller, the supporting mechanism comprises a supporting cylinder and a supporting seat, and the supporting cylinder is rotatably and coaxially sleeved on the periphery of the main shaft. The supporting seat is arranged between the driving motor and the mounting impeller and comprises a base and a supporting ring, the periphery of the supporting cylinder is coaxially sleeved with the supporting ring in a lockable mode, the base is connected to the periphery of the supporting ring, a mounting through hole is formed in the side, away from the supporting cylinder, of the base, and the depth direction of the mounting through hole is parallel to the vertical direction. Compared with the prior art, the high-lift submerged slurry pump provided by the utility model is provided with a corresponding supporting mechanism aiming at the lengthened main shaft, so that the technical problem that the slurry pump cannot run smoothly due to the fact that the main shaft is too long is solved.

Description

Technical Field

[0001] The utility model belongs to the field of pumps, and more specifically relates to a high-lift submerged slurry pump. Background Art

[0002] The submersible slurry pump is a vertical single-stage single-suction cantilever centrifugal pump structure. The impeller is a semi-open impeller, and a stirring blade is provided at the extension of the impeller suction side. It is mainly used in environmental protection, municipal engineering, thermal power generation, gas coking plant, oil refinery, steel mill, mining, papermaking, cement plant, food factory, printing and dyeing and other industries to pump concentrated liquid, thick oil, oil residue, dirty liquid, mud, mortar, quicksand and flowing sludge in urban sewage ditches, as well as fluids containing mud, sand and slag and corrosive liquids.

[0003] The submersible slurry pump is a single-stage, single-suction cantilever structure. The hydraulic components of the pump are connected by a bearing seat, a support seat, and a connecting pipe. The liquid is discharged from the liquid outlet pipe component. The impeller of the pump is a semi-open impeller. A stirring blade is provided at the extension of the impeller blade inlet. The main feature of the pump is that the pump shaft in the submersible part needs to have sufficient rigidity. There is no bearing between the impeller and the pump casing, and no shaft seal is used, so as to transport the medium containing a large concentration of fixed particles. After the customer parameters (flow rate, head) and the flow-through components are determined, when the submersible depth differs greatly, the vibration of the bracket assembly will be restricted by its length, resulting in the limited start-up liquid level of the pump, thereby resulting in the limited submersible depth, forcing the customer to use two submersible slurry pumps in series, or add a slurry storage tank, which increases the workload of civil engineering. In this regard, the inventor increases the submersible depth of the slurry pump by lengthening the main shaft of the pump; however, during the operation of the submersible slurry pump, it is easy to cause the slurry pump to vibrate due to the excessive length of the main shaft, making the slurry pump unable to operate smoothly, and it is in urgent need of improvement. Utility Model Content

[0004] The utility model aims to provide a high-lift submersible slurry pump to solve the technical problem of insufficient stability of the main shaft during rotation of the existing high-lift slurry pump due to the excessive length of the main shaft.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a high-lift submersible slurry pump, including a main shaft and a supporting mechanism, one end of the main shaft is connected to the driving motor, and the other end is used to install the impeller, the supporting mechanism includes a supporting tube and a supporting seat, the supporting tube is rotatably coaxially sleeved on the outer periphery of the main shaft, and is arranged between the driving motor and the installed impeller, the supporting seat includes a base and a supporting ring, the supporting ring is lockably coaxially sleeved on the outer periphery of the supporting tube, the base is connected to the outer periphery of the supporting ring, and a mounting through hole is provided on the side of the base away from the supporting tube, and the depth direction of the mounting through hole is parallel to the vertical direction.

[0006] In a possible implementation, the support ring includes a first upper half ring and a first lower half ring which are assembled from top to bottom, one side of the first upper half ring is hinged to the corresponding side of the first lower half ring through a first hinge axis, the other side of the first upper half ring is lockably connected to the corresponding side of the first lower half ring, and the bottom of the first lower half ring is fixedly connected to the support seat.

[0007] In a possible implementation, a first positioning hole is provided on a side of the first upper half ring away from the first hinge axis, and a second positioning hole is provided on a side of the first lower half ring away from the first hinge axis. The first positioning hole can be fixed to the second positioning hole by a positioning pin.

[0008] In a possible implementation, the outer periphery of the support cylinder is provided with a positioning shoulder corresponding to the support ring, the outer periphery of the positioning shoulder is provided with an annular groove, the annular groove is coaxial with the main shaft, and the support ring is snap-fitted with the annular groove.

[0009] In a possible implementation, a locating bearing is provided in the support tube, an inner ring of the locating bearing is sleeved on the outer circumference of the main shaft, and an outer ring of the locating bearing is elastically connected to the inner wall of the support tube.

[0010] In a possible implementation manner, the locating bearing is arranged corresponding to the locating shoulder.

[0011] In a possible implementation, an elastic buffer sleeve is provided on the outer periphery of the outer ring, and the elastic buffer sleeve is used to form an interference fit between the outer ring of the locating bearing and the inner wall of the support tube.

[0012] In a possible implementation, the base further includes a screw rod and a support foot, the screw rod is threadably matched with the mounting through hole, and the support foot is ball-connected to the bottom end of the screw rod.

[0013] In a possible implementation, the high-lift submersible slurry pump also includes a pump body and a discharge pipe, the pump body is arranged at the end of the main shaft, and the impeller is located in the pump body, the pump body has a first opening and a second opening, the discharge pipe is connected to the first opening or the second opening, and the impeller can pump liquid from the first opening to the second opening, or pump liquid from the second opening to the first opening.

[0014] In a possible implementation, one end of the discharge pipe is connected to the first opening or the second opening, and the other end of the discharge pipe extends along the axis of the main shaft toward the driving motor and is detachably connected to the support tube.

[0015] Compared with the prior art, the high-lift submersible slurry pump provided by the utility model has the following beneficial effects: when the main shaft is rotating, the support tube in the utility model can support the main shaft in the radial direction, reducing the radial deviation of the main shaft during rotation, and at the same time, the support tube can also protect the main shaft to prevent foreign objects such as large stones from invading the main shaft; in addition, the support seat in the utility model can fix the support tube to a specified position, making the connection between the high-lift submersible slurry pump in the utility model and the working plane more secure; not only that, the utility model provides an installation through hole on the base, so that the connection between the base and the working plane (such as a rock layer, a sand layer, and a mixed soil layer) is more convenient, thereby reducing the work intensity during the installation of the submersible slurry pump on the working plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 A partial structural schematic diagram of a high-lift submersible slurry pump provided by the utility model;

[0018] Figure 2 This is a structural schematic diagram of the support mechanism provided by the utility model.

[0019] In the figure:

[0020] 1. Spindle;

[0021] 2. Support mechanism; 21. Support cylinder; 211. Positioning bearing; 2111. Elastic buffer sleeve; 212. Positioning shoulder; 22. Support seat; 221. Base; 222. Support ring; 2211. First upper half ring; 2212. First lower half ring; 2213. Positioning pin; 2214. Screw; 2215. Support foot;

[0022] 3. Impeller;

[0023] 4. Pump body;

[0024] 5. Expel the tube. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inside", and "back" appear to indicate orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0027] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, the connection 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, an indirect connection through an intermediate medium, or a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Please also read Figure 1 and Figure 2 Now, the high-lift submersible slurry pump provided by the utility model is described. The high-lift submersible slurry pump comprises a main shaft 1 and a support mechanism 2. One end of the main shaft 1 is connected to the driving motor, and the other end is used to install the impeller 3. The support mechanism 2 comprises a support tube 21 and a support seat 22. The support tube 21 is rotatably coaxially sleeved on the outer periphery of the main shaft 1 and is arranged between the driving motor and the installation impeller 3. The support seat 22 comprises a base 221 and a support ring 222. The support ring 222 is lockably coaxially sleeved on the outer periphery of the support tube 21. The base 221 is connected to the outer periphery of the support ring 222, and a mounting through hole is provided on the side of the base 221 away from the support tube 21, and the depth direction of the mounting through hole is parallel to the vertical direction.

[0030] Compared with the prior art, the high-lift submersible slurry pump provided by the utility model has the following beneficial effects: when the main shaft 1 is rotating, the support tube 21 in the utility model can support the radial direction of the main shaft 1, thereby reducing the radial deviation of the main shaft 1 during the rotation process. At the same time, the support tube 21 can also protect the main shaft 1 to prevent foreign objects such as large stones from invading the main shaft 1. In addition, the support seat 22 in the utility model can fix the support tube 21 to a specified position, thereby making the connection between the high-lift submersible slurry pump in the utility model and the working plane more secure. Moreover, the utility model provides an installation through hole on the base 221, thereby making the connection between the base 221 and the working plane (such as a rock layer, a sand layer, or a mixed soil layer) more convenient, thereby reducing the work intensity during the installation of the submersible slurry pump on the working plane.

[0031] Based on the above embodiment, in order to facilitate the sleeve of the support ring 222 on the outer periphery of the support tube 21, a more preferred embodiment is proposed. Specifically, the support ring 222 includes a first upper half ring 2211 and a first lower half ring 2212 which are assembled from top to bottom. One side of the first upper half ring 2211 is hinged to the corresponding side of the first lower half ring 2212 through a first hinge shaft. The other side of the first upper half ring 2211 can be locked and connected to the corresponding side of the first lower half ring 2212. The bottom of the first lower half ring 2212 is fixedly connected to the support seat 22. Compared with the prior art, the present embodiment can lock the support tube 21 through the connection between the first upper half ring 2211 and the first lower half ring 2212 to form a stable connection between the support tube 21 and the support seat 22. In addition, the first upper half ring 2211 and the first lower half ring 2212 in the present embodiment are convenient to assemble and disassemble, and easy to operate. Furthermore, in the present embodiment, a first positioning hole is provided on a side of the first upper half ring 2211 away from the first hinge axis, and a second positioning hole is provided on a side of the first lower half ring 2212 away from the first hinge axis. The first positioning hole can be pinned and fixed with the second positioning hole by a positioning pin 2213. In this way, the present embodiment can realize pinning and fixing of the first positioning hole and the second positioning pin 2213 by the positioning pin 2213 to prevent the first upper half ring 2211 and the first lower half ring 2212 from loosening. Of course, from the perspective of connection reliability, using bolts to form a stable connection between the first upper half ring 2211 and the first lower half ring 2212 is also an optional connection method.

[0032] In a feasible implementation, the outer periphery of the support tube 21 is provided with a positioning shoulder 212 corresponding to the support ring 222, the outer periphery of the positioning shoulder 212 is provided with an annular groove, the annular groove is coaxial with the main shaft 1, and the support ring 222 is snap-fitted with the annular groove. Compared with the prior art, the shoulder in this embodiment can not only make the structural strength of the support tube 21 higher, but also prevent the support ring 222 from deviating along the axial direction of the support tube 21, so that the connection between the support tube 21 and the base 221 is more stable.

[0033] Based on the above embodiments, in some embodiments, a locating bearing 211 is provided in the support tube 21, the inner ring of the locating bearing 211 is sleeved on the outer periphery of the main shaft 1, and the outer ring of the locating bearing 211 is elastically connected to the inner wall of the support tube 21. In this embodiment, the locating bearing 211 can form a stable support for the rotation of the main shaft 1, and can use the elastic connection between the outer ring and the support tube 21 to buffer the vibration of the main shaft 1, so as to prevent the main shaft 1 from vibrating too violently and causing adverse effects on the operation of the high-lift submersible slurry pump. Furthermore, the locating bearing 211 is arranged correspondingly to the locating shoulder 212, so as to use the higher structural strength of the locating shoulder 212 to enhance the supporting effect of the support tube 21 on the main shaft 1.

[0034] Based on the above embodiments, preferably, an elastic buffer sleeve 2111 is provided on the outer periphery of the outer ring, and the elastic buffer sleeve 2111 is used to form an interference fit between the outer ring of the positioning bearing 211 and the inner wall of the support tube 21. With such a configuration, the present embodiment can utilize the elastic buffer sleeve 2111 to buffer the vibration of the main shaft 1, thereby preventing the vibration of the main shaft 1 from adversely affecting the overall structure of the present invention.

[0035] In a feasible embodiment, the base 221 further includes a screw rod 2214 and a support leg 2215, the screw rod 2214 is threadedly adapted to the mounting through hole, and the support leg 2215 is ball-connected to the bottom end of the screw rod 2214. Compared with the prior art, the present embodiment can adjust the extension length of the support leg 2215 by rotating the screw rod 2214, so as to facilitate the adjustment of the horizontality of the support mechanism 2.

[0036] Based on the above embodiment, the high-lift submersible slurry pump further includes a pump body 4 and a discharge pipe 5. The pump body 4 is disposed at the end of the main shaft 1, and the impeller 3 is located in the pump body 4. The pump body 4 has a first opening and a second opening. The discharge pipe 5 is connected to the first opening or the second opening. The impeller 3 can pump the liquid from the first opening to the second opening, or pump the liquid from the second opening to the first opening. In this embodiment, the discharge pipe 5 can transport the liquid pumped by the impeller 3 to a specified position to prevent the length of the discharge pipe 5 from not matching the length of the main shaft 1 due to the lengthening of the main shaft 1.

[0037] In a possible implementation, one end of the discharge pipe 5 is connected to the first opening or the second opening, and the other end of the discharge pipe 5 extends along the axis of the main shaft 1 in a direction close to the drive motor, and is detachably connected to the support tube 21. In this embodiment, the detachable connection between the discharge pipe 5 and the support tube 21 can enhance the connection strength between the discharge pipe 5 and the support tube 21, and prevent the discharge pipe 5 from having an adverse effect on its own structural rigidity due to the increase in length.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-lift submersible slurry pump, characterized in that: The invention comprises a main shaft (1) and a support mechanism (2), wherein one end of the main shaft (1) is connected to a driving motor, and the other end is used to mount an impeller (3), wherein the support mechanism (2) comprises a support tube (21) and a support seat (22), wherein the support tube (21) is rotatably and coaxially sleeved on the outer periphery of the main shaft (1), and is arranged between the driving motor and the mounting impeller (3), wherein the support seat (22) comprises a base (221) and a support ring (222), wherein the support ring (222) is lockably and coaxially sleeved on the outer periphery of the support tube (21), wherein the base (221) is connected to the outer periphery of the support ring (222), and a mounting through hole is provided on a side of the base (221) away from the support tube (21), wherein the depth direction of the mounting through hole is parallel to the vertical direction.

2. The high-lift submersible slurry pump according to claim 1, characterized in that: The support ring (222) comprises a first upper half ring (2211) and a first lower half ring (2212) which are assembled from top to bottom, one side of the first upper half ring (2211) is hinged to the corresponding side of the first lower half ring (2212) via a first hinge axis, the other side of the first upper half ring (2211) is lockably connected to the corresponding side of the first lower half ring (2212), and the bottom of the first lower half ring (2212) is fixedly connected to the support seat (22).

3. The high-lift submersible slurry pump according to claim 2, characterized in that: A first positioning hole is provided on the side of the first upper half ring (2211) away from the first hinge axis, and a second positioning hole is provided on the side of the first lower half ring (2212) away from the first hinge axis. The first positioning hole can be fixed to the second positioning hole by a positioning pin (2213).

4. The high-lift submersible slurry pump according to claim 1, characterized in that: The outer periphery of the support cylinder (21) is provided with a positioning shoulder (212) corresponding to the support ring (222), the outer periphery of the positioning shoulder (212) is provided with an annular groove, the annular groove is coaxial with the main shaft (1), and the support ring (222) is snap-fitted with the annular groove.

5. The high-lift submersible slurry pump according to claim 4, characterized in that: A locating bearing (211) is arranged inside the support tube (21), the inner ring of the locating bearing (211) is sleeved on the outer circumference of the main shaft (1), and the outer ring of the locating bearing (211) is elastically connected to the inner wall of the support tube (21).

6. The high-lift submersible slurry pump according to claim 5, characterized in that: The locating bearing (211) and the locating shaft shoulder (212) are arranged correspondingly.

7. The high-lift submersible slurry pump according to claim 5, characterized in that: An elastic buffer sleeve (2111) is provided on the outer periphery of the outer ring, and the elastic buffer sleeve (2111) is used to form an interference fit between the outer ring of the locating bearing (211) and the inner wall of the support cylinder (21).

8. The high-lift submersible slurry pump according to claim 1, characterized in that: The base (221) further comprises a screw rod (2214) and a support foot (2215), wherein the screw rod (2214) is threadably matched with the mounting through hole, and the support foot (2215) is ball-jointed to the bottom end of the screw rod (2214).

9. The high-lift submersible slurry pump according to claim 1, characterized in that: The high-lift submersible slurry pump further comprises a pump body (4) and a discharge pipe (5); the pump body (4) is arranged at the end of the main shaft (1), and the impeller (3) is located in the pump body (4); the pump body (4) has a first opening and a second opening; the discharge pipe (5) is connected to the first opening or the second opening; the impeller (3) can pump liquid from the first opening to the second opening, or pump liquid from the second opening to the first opening.

10. The high-lift submersible slurry pump according to claim 9, characterized in that: One end of the discharge pipe (5) is connected to the first opening or the second opening, and the other end of the discharge pipe (5) extends along the axis of the main shaft (1) in a direction close to the drive motor and is detachably connected to the support tube (21).

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