Novel impeller structure of centrifugal pump

Abstract

The utility model discloses a novel impeller structure of a centrifugal pump, which belongs to the technical field of centrifugal pumps and comprises a centrifugal pump body. An impeller mechanism is arranged in the centrifugal pump body; the impeller mechanism comprises a semi-sealed impeller installed in a wheel groove of the centrifugal pump body, two symmetrical connecting plates detachably connected to the outer wall of the semi-sealed impeller, shaft rods fixedly connected to the outer walls of the connecting plates and shaft sleeves installed on the outer walls of the two shaft rods, and the ends, away from the connecting plates, of the shaft rods extend out of the shaft sleeves and are provided with connecting holes. A shaft sleeve insertion opening is formed in the middle of the impeller mechanism, an oil way is formed in the shaft sleeve insertion opening, an oil injection channel is formed in one side of the shaft sleeve, and one end of the shaft sleeve is fixedly connected with a valve head communicated with the oil injection channel. And the adaptive capacity of the centrifugal pump in a complex installation environment is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump technical field, concretely is a new type of impeller structure of centrifugal pump. BACKGROUND

[0002] Centrifugal pump is a kind of fluid conveying equipment widely used in agricultural irrigation, industrial transportation, urban water supply and other fields, and its core component is impeller.The structural design of impeller directly affects the working efficiency and running stability of pump.The centrifugal pump impeller in prior art usually only has one mounting direction, i.e., can only be connected with driving motor at a specific side.This structure is relatively simple in manufacturing process, but has certain limitations: when pump body installation position is limited or needs to be adjusted according to the space layout of site, the traditional impeller cannot meet the needs of bidirectional installation or reversing driving, which brings inconvenience to the arrangement and maintenance of equipment.And in some application scenarios, due to different fluid flow direction, gravity center configuration or operation habits, users want to select the mounting direction of impeller according to needs, but the existing structure cannot provide such flexibility.

[0003] Based on this, the utility model discloses a new type of impeller structure of centrifugal pump to solve the above problems. SUMMARY

[0004] The utility model discloses a new type of impeller structure of centrifugal pump to solve the above technical problems.

[0005] To achieve the above object, the utility model provides the following technical scheme: a new type of impeller structure of centrifugal pump, comprising: centrifugal pump body;The centrifugal pump body is provided with impeller mechanism in;

[0006] The impeller mechanism includes half-enclosed impeller installed in the wheel groove of centrifugal pump body, two symmetrical connecting plates detachably connected to the outer wall of half-enclosed impeller, shaft rod fixedly connected to the outer wall of connecting plate, and shaft sleeve installed on the outer wall of two shaft rods, and the end of shaft rod away from connecting plate extends out of shaft sleeve and is provided with connecting hole;

[0007] Oil channel is arranged in the shaft sleeve spout, oil injection channel is arranged on one side of the shaft sleeve, and valve head is fixedly connected to the oil injection channel.

[0008] Preferably, a plurality of insertion holes are sequentially arranged on the outer wall of connecting plate, and a plurality of threaded grooves are sequentially arranged on the outer wall of half-enclosed impeller, and the insertion hole of connecting plate and the threaded groove of half-enclosed impeller are locked by bolt.

[0009] Preferably, the bushing is fitted into the centrifugal pump body, and two symmetrical connecting arms are fixed on the outer wall of the bushing. The outer wall of the connecting arm is provided with an insertion hole, and the centrifugal pump body is provided with a corresponding threaded seat. The insertion hole of the connecting arm and the threaded seat of the centrifugal pump body are locked together by bolts.

[0010] Preferably, the outer wall of the bushing is provided with an annular groove, and a rubber sealing ring is fitted inside the annular groove. The centrifugal pump body is provided with a corresponding groove, and the rubber sealing ring extends into the groove of the centrifugal pump body.

[0011] Preferably, the outer wall of the semi-sealed impeller is fixedly connected to both connecting plates with multiple limiting pins, and the limiting pins are respectively inserted into the two connecting plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Firstly, the symmetrical connection structure on both sides of the impeller mechanism allows the semi-hermetic impeller to be connected to the drive motor on either side, significantly improving the adaptability of the centrifugal pump in complex installation environments.

[0014] Secondly, the bushing is equipped with an oil inlet channel and a valve head to cooperate with the oil circuit, making it easier and faster to add lubricating oil without cumbersome disassembly and assembly, so that the shaft can maintain good lubrication during operation and reduce wear. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a schematic diagram highlighting the semi-hermetic impeller structure in this embodiment;

[0018] Figure 3 This is a schematic diagram highlighting the shaft connection structure in this embodiment;

[0019] Figure 4 This is a schematic diagram highlighting the internal structure of the bushing in this embodiment;

[0020] Figure 5 This is a schematic diagram highlighting the installation of the impeller mechanism in this embodiment.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1, centrifugal pump body; 2, semi-enclosed impeller; 3, shaft; 4, connecting plate; 5, threaded groove; 6, limit pin; 7, shaft sleeve; 8, oil line; 9, oil injection channel; 10, valve head; 11, connecting arm; 12, ring groove; 13, rubber sealing ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: A new type of impeller structure of centrifugal pump, comprising: centrifugal pump body 1;Centrifugal pump body 1 is provided with impeller mechanism in it;

[0025] Impeller mechanism includes semi-enclosed impeller 2 that is installed in the wheel groove of centrifugal pump body 1, two symmetrical connecting plates 4 that can be detachably connected to the outer wall of semi-enclosed impeller 2, shaft 3 that is fixedly connected to the outer wall of connecting plate 4, and shaft sleeve 7 that is installed on the outer wall of two shafts 3, the end of shaft 3 away from connecting plate 4 extends out of shaft sleeve 7 and is provided with connecting hole;

[0026] Oil line 8 is arranged in the socket of shaft sleeve 7, oil injection channel 9 is arranged on one side of shaft sleeve 7, and valve head 10 is fixedly connected to the oil injection channel 9;

[0027] Semi-enclosed impeller 2 is detachably connected to the two symmetrical connecting plates 4 through the outer walls on both sides, the outer wall of each connecting plate 4 is fixedly connected to shaft 3, and the distal end of shaft 3 penetrates into the shaft sleeve 7 installed in centrifugal pump body 1. The end of shaft 3 extends out of shaft sleeve 7, and is connected to the output shaft of driving motor through connecting hole, connecting device and plug pin, so that semi-enclosed impeller 2 can obtain rotary driving force through the shaft. The socket of shaft sleeve 7 is provided with oil line 8, the side wall is provided with oil injection channel 9 and is connected with valve head 10, and the operator can inject lubricating oil through valve head 10, so that shaft 3 can maintain good lubrication state during operation and reduce wear.

[0028] Further preferably, a plurality of insertion holes are sequentially arranged on the outer wall of connecting plate 4, and a plurality of threaded grooves 5 are sequentially arranged on the outer wall of semi-enclosed impeller 2, and the insertion holes of connecting plate 4 and the threaded grooves 5 of semi-enclosed impeller 2 are locked by bolts.

[0029] The outer wall of connecting plate 4 is provided with a plurality of insertion holes, which are aligned with the threaded grooves 5 on the outer wall of semi-enclosed impeller 2, and are locked by bolts, so that the connecting plate 4 can be individually disassembled, repaired and replaced.

[0030] Further preferably, the shaft sleeve 7 is embedded in the centrifugal pump body 1, and the outer wall of the shaft sleeve 7 is fixed with two symmetrical connecting arms 11, the outer wall of the connecting arm 11 is provided with a insertion hole, and the centrifugal pump body 1 is provided with a threaded seat corresponding thereto, and the insertion hole of the connecting arm 11 and the threaded seat of the centrifugal pump body 1 are locked by bolts;

[0031] The shaft sleeve 7 is fixedly installed in the mounting cavity of the centrifugal pump body 1 through the connecting arm 11 arranged outside, the insertion hole of the connecting arm 11 and the threaded seat on the pump body are locked by bolts, and the installation of the shaft sleeve 7 is firm.

[0032] Further preferably, the outer wall of the shaft sleeve 7 is provided with an annular groove 12, and a rubber sealing ring 13 is arranged in the annular groove 12, and the centrifugal pump body 1 is provided with a slot corresponding to the annular groove 12, and the rubber sealing ring 13 extends into the slot of the centrifugal pump body 1.

[0033] The outer wall of the shaft sleeve 7 is provided with an annular groove 12, and a rubber sealing ring 13 is arranged in the annular groove 12, and a part of the sealing ring is embedded in the slot arranged in the centrifugal pump body 1, so that effective sealing is formed, liquid leakage is prevented, and the protection performance of the whole machine is improved.

[0034] Further preferably, a plurality of limiting pins 6 are fixedly connected to the outer wall of the semi-enclosed impeller 2 towards the two connecting plates 4, and the limiting pins 6 are respectively inserted into the limiting holes of the two connecting plates 4.

[0035] A plurality of limiting pins 6 are further arranged on the outer wall of the semi-enclosed impeller 2 and are respectively inserted into the limiting holes of the two connecting plates 4, so that preliminary positioning is realized and rotation error during connection is prevented.

[0036] One specific application of the embodiment is that the driving motor can be selectively connected to the shaft rod 3 on any side of the semi-enclosed impeller 2, so that flexible forward and reverse installation is realized; after selection and connection, the shaft rod 3 is driven to rotate through the motor driving shaft, so that the semi-enclosed impeller 2 in the centrifugal pump body 1 is driven to rotate, liquid entering the centrifugal pump body 1 through the inlet end is thrown out from the outlet end under the action of the semi-enclosed impeller 2, and fluid conveying is realized. The unused shaft rod 3 on the other side is also covered and limited by the shaft sleeve 7, and does not affect the overall structural balance, and during maintenance, a lubricating pipeline can be externally connected to the valve head 10, lubricating oil can be injected into the oil channel 8 of the shaft sleeve 7 through the oil injection channel 9, and the operation is relatively convenient and does not need complicated disassembly and assembly.

[0037] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In the utility model, unless another explicit provision and limitation, the terms "mount", "set", "connect", "fix", "screw" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or become an integral whole, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be two element internal communication or two element's mutual action relation, unless another explicit limitation, for the ordinary skill in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0039] Although the embodiments of the utility model have been shown and described, for the ordinary skill in the art, can understand that these embodiments can be varied, modified, replaced and changed in many ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and its equivalents.

Claims

1. A new type of impeller structure of a centrifugal pump, characterized by, Include: Centrifugal pump body (1); the centrifugal pump body (1) is provided with impeller mechanism in; The impeller mechanism includes half-enclosed impeller (2) installed in the wheel groove of centrifugal pump body (1), two symmetrical connecting plates (4) detachably connected to the outer wall of half-enclosed impeller (2), shaft rod (3) fixedly connected to the outer wall of connecting plate (4), and shaft sleeve (7) installed on the outer wall of two shaft rods (3), the end of shaft rod (3) away from connecting plate (4) extends out of shaft sleeve (7) and is provided with connecting hole; The oil channel (8) is arranged in the shaft sleeve (7), the oil inlet channel (9) is arranged on one side of the shaft sleeve (7), and the valve head (10) is fixedly connected with the oil inlet channel (9).

2. A novel impeller structure of a centrifugal pump according to claim 1, characterized in that: The connecting plate (4) is provided with a plurality of insertion holes on the outer wall, and the half-enclosed impeller (2) is provided with a plurality of threaded grooves (5) on the outer wall in sequence, and the insertion hole of the connecting plate (4) and the threaded groove (5) of the half-enclosed impeller (2) are locked by bolts.

3. A novel impeller structure of a centrifugal pump according to claim 1, characterized in that: The shaft sleeve (7) is embedded in the centrifugal pump body (1), and the shaft sleeve (7) is fixedly connected with two symmetrical connecting arms (11) on the outer wall, the insertion hole is arranged on the outer wall of the connecting arm (11), and the threaded seat is arranged in the centrifugal pump body (1), the insertion hole of the connecting arm (11) and the threaded seat of the centrifugal pump body (1) are locked by bolts.

4. A novel impeller structure of a centrifugal pump according to claim 1, characterized in that: The shaft sleeve (7) is provided with a ring groove (12) on the outer wall, and the rubber sealing ring (13) is sleeved in the ring groove (12), and the centrifugal pump body (1) is provided with a slot corresponding to the ring groove (12), and the rubber sealing ring (13) extends into the slot of the centrifugal pump body (1).

5. A novel impeller structure of a centrifugal pump according to claim 1, characterized in that: The half-enclosed impeller (2) is fixedly connected with a plurality of limiting pins (6) on the outer wall towards two connecting plates (4), and the limiting pins (6) are respectively inserted with two connecting plates (4).

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