Hydraulic tool facilitating mounting and dismounting of centrifugal machine impeller

Abstract

The hydraulic tool comprises a base, a hand-cranking hydraulic pump is arranged on one side of the upper portion of the base, an oil conveying pipe installed on the upper portion of the base is arranged at the output end of the hand-cranking hydraulic pump, a pressure disc is connected with the oil conveying pipe, and a movable high-pressure pipe is connected to the outer end of the oil conveying pipe. A connecting joint is arranged at the end, away from the oil conveying pipe, of the movable high-pressure pipe, the connecting joint is in butt joint with the end, in the center of the impeller, of the impeller shaft, and a pressing nut is in threaded connection between the connecting joint and the impeller shaft. The purpose of conveniently disassembling and assembling the impeller can be achieved as long as the specific output pressure is reached, continuous attempts and time waste caused by too large or too small pressure are avoided, efficient impeller disassembling and assembling are facilitated, and stable maintenance of the pressure can be guaranteed by closing the stop valve in the using process through the arranged stop valve.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller disassembly and assembly, in particular to a hydraulic tool which is convenient for installing and disassembling a centrifuge impeller. Background Art

[0002] The impeller of a centrifuge refers to a wheel structure equipped with multiple blades. When the impeller rotates, the air is captured by the blades and thrown outward, generating centrifugal force, thereby increasing the pressure and speed of the air. At present, the existing centrifuge impellers are relatively rigid in the disassembly and assembly operations. Most of them are installed or disassembled by mechanical hard pulling or knocking. The operation is laborious and inconvenient, and improper operation may also damage the impeller. Therefore, a hydraulic tool is proposed to facilitate the installation and disassembly of the centrifuge impeller. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] Therefore, the purpose of the utility model is to provide a hydraulic tool for facilitating the installation and disassembly of a centrifuge impeller, so as to solve the problem that the existing centrifuge impeller proposed in the above background technology is relatively rigid in the disassembly and assembly operation, relatively laborious and inconvenient in operation, and improper operation may also damage the impeller.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic tool for facilitating the installation and disassembly of a centrifuge impeller, comprising a base, a hand-cranked hydraulic pump is arranged on one side of the upper part of the base, the output end of the hand-cranked hydraulic pump has an oil pipe installed on the upper part of the base, a pressure plate is connected to the oil pipe, the outer end of the oil pipe is connected to a movable high-pressure pipe, the end of the movable high-pressure pipe away from the oil pipe is provided with a connecting joint, the connecting joint is connected to the end of the impeller shaft at the center of the impeller, a clamping nut is threadedly connected between the connecting joint and the impeller shaft, and at least one O-ring is also arranged in the inner hole corresponding to the impeller and the impeller shaft.

[0006] As a preferred solution of the hydraulic tool for facilitating installation and removal of the centrifuge impeller described in the utility model, the upper part of the hand-cranked hydraulic pump also has a crank, and the outer side of the crank is also provided with an anti-slip sleeve.

[0007] As a preferred solution of the hydraulic tool for facilitating installation and removal of the centrifuge impeller described in the utility model, a connecting branch pipe is connected between the pressure plate and the oil pipeline, and the bottom of the pressure plate also has a bottom plate fixedly installed on the upper part of the base.

[0008] As a preferred solution of the hydraulic tool for facilitating installation and removal of the centrifuge impeller described in the utility model, a stop valve is further provided on the oil delivery pipe and close to the output end of the hand-cranked hydraulic pump.

[0009] As a preferred solution of the hydraulic tool for facilitating installation and removal of the centrifuge impeller described in the utility model, the outer side of the clamping nut is also equipped with a special wrench, and the outer end of the special wrench is also assisted by a torque wrench.

[0010] Compared with the prior art, the beneficial effect of the utility model is that the hydraulic tool for facilitating the installation and disassembly of the centrifuge impeller is used by installing the impeller on the impeller shaft, preliminarily tightening the clamping nut by hand, then plugging the connecting joint into the end of the impeller shaft, starting the hand-cranked hydraulic pump, and slowly tightening the clamping nut with a special wrench. With the continuous injection of hydraulic oil and the increase in pressure, the inner hole of the impeller can be forced to become larger. When the pressure reaches the specified value, the clamping nut is tightened to a predetermined torque by hand. With the rotation of the nut, the impeller will slowly move to the specified position, thereby achieving the purpose of installation. The disassembly is the opposite of the installation. The mutual cooperation makes the disassembly and assembly of the impeller more labor-saving. It has a comprehensive effect of ingenious and reasonable structure, easy operation, and no damage to the impeller structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the external structure of the device of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall process of the utility model.

[0013] In the figure: 100, base; 200, hand-cranked hydraulic pump; 210, crank; 220, oil pipeline; 230, pressure plate; 240, movable high-pressure pipe; 250, connecting joint; 260, connecting branch pipe; 270, bottom plate; 280, stop valve; 300, impeller; 310, impeller shaft; 320, O-ring; 400, tightening nut; 410, special wrench. DETAILED DESCRIPTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0015] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0016] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1-Figure 2 The utility model shows a schematic diagram of the entire structure of a hydraulic tool for facilitating the installation and removal of a centrifuge impeller. Figure 1-Figure 2 A hydraulic tool for facilitating the installation and removal of a centrifuge impeller in this embodiment includes a base 100, a hand-operated hydraulic pump 200 is arranged on one side of the upper part of the base 100, an output end of the hand-operated hydraulic pump 200 has an oil pipe 220 installed on the upper part of the base 100, a pressure plate 230 is connected to the oil pipe 220, an outer end of the oil pipe 220 is connected to a movable high-pressure pipe 240, an end of the movable high-pressure pipe 240 away from the oil pipe 220 is provided with a connecting joint 250, the connecting joint 250 is connected to the end of the impeller shaft 310 at the center of the impeller 300, a compression nut 400 is threadedly connected between the connecting joint 250 and the impeller shaft 310, and at least one O-ring 320 is also arranged in the inner holes corresponding to the impeller 300 and the impeller shaft 310.

[0018] The hand-cranked hydraulic pump 200 also has a crank handle 210 on the upper part, and an anti-slip cover is also provided on the outer side of the crank handle 210. It can be understood that the anti-slip cover makes it more stable and less likely to slip when the staff pulls the crank handle 210 up and down. At the same time, the hand-cranked hydraulic pump 200 and the oil pipe 220 are detachably connected to the base 100 to facilitate later maintenance and replacement; in addition, the maximum output pressure of the hand-cranked hydraulic pump 200 in this embodiment is not less than 40,000 psi, so it can fully meet the installation and disassembly operations of the impeller, and the disassembly of the impeller is more labor-saving.

[0019] A connecting branch pipe 260 is connected between the pressure plate 230 and the oil pipeline 220. The bottom of the pressure plate 230 also has a bottom plate 270 fixedly installed on the upper part of the base 100. Through the arrangement of the pressure plate 230, the staff can observe the output pressure of the hand pump at any time during operation. As long as a specific output pressure is reached, the purpose of facilitating the disassembly and assembly of the impeller can be achieved, avoiding continuous attempts and time waste caused by excessive or insufficient pressure, which is conducive to the efficient disassembly and assembly of the impeller.

[0020] Furthermore, a stop valve 280 is provided on the oil pipeline 220 and near the output end of the hand hydraulic pump 200. Here, the stop valve 280 can be conveniently closed when not in use. At the same time, the stop valve 280 can be closed when in use to ensure stable pressure maintenance, which is simple and easy to use.

[0021] The outer side of the clamping nut 400 is also equipped with a special wrench 410, and the outer end of the special wrench 410 is also assisted by a torque wrench. When in use, the impeller 300 is installed on the impeller shaft 310, the clamping nut 400 is preliminarily tightened by hand, and then the connecting joint 250 is plugged into the end of the impeller shaft 310, and the hand-cranked hydraulic pump 200 is started. At the same time, the clamping nut 400 is slowly tightened using the special wrench 410. With the continuous injection of hydraulic oil and the increase in pressure, the inner hole of the impeller 300 can be forced to become larger. When the pressure reaches the specified value, the clamping nut 400 is tightened to a predetermined torque by hand. With the rotation of the nut, the impeller 300 will slowly move to the specified position, thereby achieving the purpose of installation. The disassembly is the opposite of the installation. The mutual cooperation makes the disassembly and assembly of the impeller 300 more labor-saving, and has a comprehensive effect of ingenious and reasonable structure, easy operation, and no damage to the impeller structure.

[0022] In summary, the hydraulic tool of the present embodiment is convenient for installing and disassembling the centrifuge impeller. When in use, the impeller 300 is installed on the impeller shaft 310, the clamping nut 400 is preliminarily tightened by hand, and then the connecting joint 250 is plugged into the end of the impeller shaft 310, and the hand-cranked hydraulic pump 200 is started. At the same time, the clamping nut 400 is slowly tightened with a special wrench 410. With the continuous injection of hydraulic oil and the increase in pressure, the inner hole of the impeller 300 can be forced to become larger. When the pressure reaches the specified value, the clamping nut 400 is tightened to a predetermined torque by hand. With the rotation of the nut, the impeller 300 will slowly move to the specified position, thereby achieving the purpose of installation. The disassembly is the opposite of the installation, and the mutual cooperation makes the disassembly and assembly of the impeller 300 more labor-saving.

[0023] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hydraulic tool for facilitating the installation and removal of a centrifuge impeller, characterized in that: The invention comprises a base (100), wherein a hand-operated hydraulic pump (200) is arranged on one side of the upper part of the base (100), wherein the output end of the hand-operated hydraulic pump (200) has an oil delivery pipe (220) installed on the upper part of the base (100), and a pressure plate (230) is connected to the oil delivery pipe (220), wherein the outer end of the oil delivery pipe (220) is connected to a movable high-pressure pipe (240), and the end of the movable high-pressure pipe (240) away from the oil delivery pipe (220) is provided with a connecting joint (250), wherein the connecting joint (250) is connected to the end of the impeller shaft (310) at the center of the impeller (300), and a clamping nut (400) is threadedly connected between the connecting joint (250) and the impeller shaft (310), and at least one O-ring (320) is also arranged in the inner holes corresponding to the impeller (300) and the impeller shaft (310).

2. A hydraulic tool for facilitating installation and removal of a centrifuge impeller according to claim 1, characterized in that: The hand-cranked hydraulic pump (200) also has a crank (210) on its upper portion, and an anti-slip sleeve is also provided on the outer side of the crank (210).

3. A hydraulic tool for facilitating installation and removal of a centrifuge impeller according to claim 1, characterized in that: A connecting branch pipe (260) is connected between the pressure plate (230) and the oil delivery pipe (220), and the bottom of the pressure plate (230) also has a bottom plate (270) fixedly mounted on the upper part of the base (100).

4. A hydraulic tool for facilitating installation and removal of a centrifuge impeller according to claim 1, characterized in that: A stop valve (280) is also provided on the oil delivery pipe (220) and close to the output end of the hand-operated hydraulic pump (200).

5. A hydraulic tool for facilitating installation and removal of a centrifuge impeller according to claim 1, characterized in that: The outer side of the compression nut (400) is also matched with a special spanner (410), and the outer end of the special spanner (410) is also supplemented with a torque spanner.

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