Multi-stage centrifugal pump

Abstract

The utility model relates to the technical field of multi-stage centrifugal pumps and discloses a multi-stage centrifugal pump which comprises a base, a first arc-shaped plate and a supporting column are fixedly assembled on the top of the base, a clamping plate is welded to the inner wall of the first arc-shaped plate, and a motor is tightly attached to the outer wall of the clamping plate. Through the arrangement of the first arc-shaped plate, the second arc-shaped plate, the heat dissipation groove, the water retaining strip, the supporting column, the motor and the body structure, after a user makes the motor abut against the body, the motor can be directly placed in the second arc-shaped plate, a clamping plate lifts the motor, then a clamping plate on the second arc-shaped plate is in butt joint with a clamping groove, and the motor can be conveniently clamped. And the motor is protected on the basis that the heat dissipation performance of the motor is guaranteed, so that a user can directly and conveniently connect the centrifugal pump with an outdoor pipeline in a butt joint mode, the user does not need to additionally install a rainproof cover, the whole centrifugal pump is more attractive after installation, and then the practicability of the centrifugal pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage centrifugal pumps, in particular to a multi-stage centrifugal pump. Background Art

[0002] A multi-stage centrifugal pump is a combination of two or more centrifugal pumps with the same function. In terms of fluid channel structure, the medium pressure relief port of the first stage is connected to the inlet of the second stage, and the medium pressure relief port of the second stage is connected to the inlet of the third stage. Such a series connection mechanism forms a multi-stage centrifugal pump.

[0003] Although the existing centrifugal pump can transport liquid during use, the existing multi-stage centrifugal pump relies on the motor to ensure the normal operation of the multi-stage centrifugal pump. However, the existing multi-stage centrifugal pump is not provided with a protective structure. Therefore, when used outdoors, the user needs to install a customized rain cover on the position of the motor to perform rain protection operations to ensure that the motor will not be eroded by rain, thereby increasing the user's workload and reducing the practicality of the existing multi-stage centrifugal machine. For this reason, we propose a multi-stage centrifugal pump. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-stage centrifugal pump, which has the advantages of strong practicability and easy installation, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a multi-stage centrifugal pump, comprising a base, wherein the top of the base is respectively fixedly equipped with an arc plate 1 and a pillar, the inner wall of the arc plate 1 is welded with a clamping plate, the outer wall of the clamping plate is tightly fitted with a motor, the output shaft of the motor is provided with a body, the outer wall of the arc plate 1 is tightly fitted with an arc plate 2, the top of the arc plate 1 is provided with a docking groove, the outer wall of the arc plate 1 is provided with a heat dissipation groove, the inner wall of the heat dissipation groove is fixedly equipped with a water retaining strip, the bottom of the arc plate 2 is fixedly equipped with a clamping plate, both sides of the clamping plate are provided with mounting grooves, the inner wall of the mounting groove is sleeved with a retaining spring, and the end of the retaining spring is abutted with a bayonet pin.

[0006] As a preferred technical solution of the utility model: the number of the heat dissipation grooves is five, and the five heat dissipation grooves are evenly distributed along the outer wall of the arc plate one, the number of the water retaining strips is eight, the eight water retaining strips are divided into two groups, and the two groups of water retaining strips are symmetrically distributed along the outer wall of the arc plate one, and the spacing between every two water retaining strips is 1 cm.

[0007] As a preferred technical solution of the utility model: the shape and diameter of the clamping plate are compatible with the shape and diameter of the docking groove, the inner wall of the docking groove is provided with a circular hole, and the inner wall of the circular hole is plugged into the outer wall of the bayonet.

[0008] As a preferred technical solution of the utility model: the arc plate 1 is fixedly connected to the arc plate 2 through the cooperation of the docking groove and the clamping plate, and the motor is fixedly connected to the connected arc plate 1 and arc plate 2 through the clamping plate.

[0009] As an optimal technical solution of the utility model: the number of the clamping plates is four, three of the clamping plates are located on the inner wall of arc plate one, and the other clamping plate is located on the inner wall of arc plate two, and the outer walls of the four clamping plates are tightly fitted with the outer wall of the motor.

[0010] As a preferred technical solution of the utility model: the latch and the clamping plate are both made of galvanized iron metal.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The multi-stage centrifugal pump is provided with an arc plate 1, an arc plate 2, a heat dissipation groove, a water retaining strip, a support, a motor, and a main body structure. After the user docks the motor with the main body, the user can directly place the motor in the arc plate 2, so that the clamping plate lifts the motor, and then docks the clamping plate on the arc plate 2 with the clamping groove, so that the arc plate 1 and the arc plate 2 both cover the motor, and provide protection for the motor on the basis of ensuring the heat dissipation performance of the motor, so that the user can directly dock the centrifugal pump with the outdoor pipeline without the need for the user to install a rain cover. After installation, the overall appearance is more beautiful, thereby improving the practicality of the centrifugal pump.

[0013] 2. The multi-stage centrifugal pump has a structure of a retaining spring, a mounting groove, a bayonet, and a docking groove. When the user installs the arc plate 2, the retaining spring is compressed by pressing the bayonet so that the bayonet contacts the inner wall of the docking groove. Then, the bayonet is automatically plugged into the inner wall of the circular hole by pressing the arc plate 2, thereby achieving the effect of quickly fixing the arc plate 1 and the arc plate 2, thereby improving the user's assembly efficiency of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the partial cross-section structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the water retaining strip of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the card board of the utility model.

[0018] In the figure: 1. base; 2. arc plate 1; 3. arc plate 2; 4. pillar; 5. motor; 6. body; 7. heat dissipation groove; 8. water retaining strip; 9. docking groove; 10. clamping plate; 11. bayonet pin; 12. clamping plate; 13. mounting groove; 14. retaining spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 A multistage centrifugal pump comprises a base 1, wherein an arc plate 2 and a pillar 4 are fixedly mounted on the top of the base 1, a clamping plate 12 is welded on the inner wall of the arc plate 2, a motor 5 is closely fitted on the outer wall of the clamping plate 12, a body 6 is provided on the output shaft of the motor 5, a arc plate 2 3 is closely fitted on the outer wall of the arc plate 2, a docking groove 9 is provided on the top of the arc plate 2, a heat dissipation groove 7 is provided on the outer wall of the arc plate 2, a water retaining strip 8 is fixedly mounted on the inner wall of the heat dissipation groove 7, a clamping plate 10 is fixedly mounted on the bottom of the arc plate 2 3, mounting grooves 13 are provided on both sides of the clamping plate 10, a retaining spring 14 is sleeved on the inner wall of the retaining spring 14, and a retaining pin 11 is abutted against the end of the retaining spring 14.

[0021] In the above structure, through the arrangement of the base 1, arc plate 1 2, arc plate 2 3, pillar 4, motor 5, body 6, and clamping plate 12, during the installation of the centrifugal pump, the user only needs to place the motor 5 in the arc plate 1 2, use the clamping plate 12 to lift the motor 5, then align the clamping plate 10 on the arc plate 2 3 with the docking groove 9, press the bayonet 11 to dock the arc plate 1 2 with the arc plate 2 3, and automatically push the bayonet 11 through the retaining spring 14 to allow the bayonet 11 to be plugged into the round hole, so that the arc plate 1 2 and the arc plate 2 3 are fixed, so that the four clamping plates 12 all clamp and fix the motor 5. After the installation is completed, the arc plate 1 2 and the arc plate 2 3 are used to provide protection for the motor 5 to prevent rainwater from contacting the motor 5, thereby ensuring the working environment of the motor 5, thereby improving the protection of the centrifugal pump.

[0022] In a preferred embodiment: the number of heat dissipation grooves 7 is five, and the five heat dissipation grooves 7 are evenly distributed along the outer wall of the arc plate 2, the number of water retaining strips 8 is eight, the eight water retaining strips 8 are divided into two groups, and the two groups of water retaining strips 8 are symmetrically distributed along the outer wall of the arc plate 2, and the distance between every two water retaining strips 8 is 1 cm.

[0023] In the above structure, by setting the heat dissipation groove 7, the water retaining bar 8 and the arc plate 2 structure, the centrifugal pump can conduct heat through the heat dissipation groove 7 during operation, and the water retaining bar 8 can ensure that the water droplets dripping on the ground cannot contact the motor 5 in rainy weather, thereby achieving the effect of rainproof function, thereby improving the protectiveness of the centrifugal pump.

[0024] In a preferred embodiment, the shape and diameter of the clamping plate 10 are adapted to the shape and diameter of the docking groove 9 , a circular hole is formed on the inner wall of the docking groove 9 , and the inner wall of the circular hole is plugged into the outer wall of the clamping pin 11 .

[0025] In the above structure, by providing the docking groove 9, the clamping plate 10 and the circular hole structure, when the user assembles the motor 5, the docking groove 9 and the clamping plate 10 can be docked to allow the bayonet 11 to fix the arc plate 1 2 and the arc plate 2 3, thereby ensuring that the arc plate 1 2 and the arc plate 2 3 both provide protection in the form of surrounding the motor 5 to achieve a rainproof effect, and the docking of the bayonet 11 and the circular hole also improves the user's installation efficiency of the arc plate 1 2 and the arc plate 2 3, thereby improving the practicality of the centrifugal pump.

[0026] In a preferred embodiment: the arc plate 1 2 is fixedly connected to the arc plate 2 3 through the cooperation of the docking groove 9 and the clamping plate 10, and the motor 5 is fixedly connected to the connected arc plate 1 2 and the arc plate 2 3 through the clamping plate 12.

[0027] In the above structure, by setting the arc plate 1 2, arc plate 2 3, docking groove 9, and clamping plate 10 structure, after the user places the motor 5 into the arc plate 1 2, the arc plate 2 3 can be docked with the arc plate 1 2 to fix the motor 5, thereby ensuring the stability of the motor 5 during operation. The centrifugal pump can be installed outdoors without the user installing a rain cover, thereby improving the user's installation efficiency of the centrifugal pump.

[0028] In a preferred embodiment, there are four clamping plates 12 , three of which are located on the inner wall of arc plate 1 2 , and another clamping plate 12 is located on the inner wall of arc plate 2 3 , and the outer walls of the four clamping plates 12 are tightly fitted with the outer wall of the motor 5 .

[0029] In the above structure, by setting the arc plate 1 2, the clamping plate 12 and the arc plate 2 3 structure, the motor 5 is clamped by the supporting and limiting effect of the clamping plate 12 on the motor 5, so that the vibration force generated by the motor 5 during operation cannot cause the motor 5 to shift, thereby achieving the effect of fixing the motor 5 and ensuring the protection of the motor 5 when operating outdoors.

[0030] In a preferred embodiment, the latch 11 and the clamping plate 12 are both made of galvanized iron metal.

[0031] In the above structure, the galvanized iron metal has the characteristics of hardness and wear resistance, which can effectively reduce the wear of the clamping plate 12 during the process of fixing the motor 5, thereby ensuring the clamping effect of the clamping plate 12 on the motor 5. The galvanized iron metal also has the characteristic of low cost, thereby reducing the production cost of the centrifugal pump and further improving the practicality and promotion value of the centrifugal pump.

[0032] Working principle: When assembling the centrifugal pump, the user can place the motor 5 directly in the arc plate 2, and use the clamping plate 12 to lift the motor 5 to initially fix the motor 5, then align the card plate 10 with the docking groove 9, and then press the bayonet 11 so that the card plate 10 can be inserted into the docking groove 9. When the user presses the arc plate 23, the bayonet 11 will slide along the inner wall of the docking groove 9 so that the position of the bayonet 11 coincides with the position of the circular hole, and the elasticity of the retaining spring 14 is used to make the bayonet 11 plug into the inner wall of the circular hole, so that the arc plate 12 and the arc plate 23 can achieve a quick fixation effect. When the centrifugal pump is located outdoors for operation, the shield formed by the arc plate 12 and the arc plate 23 on the motor 5 is used to prevent rain from corroding the motor 5, thereby achieving a protection effect, and there is no need for the user to install a rain cover.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multistage centrifugal pump, comprising a base (1), characterized in that: The top of the base (1) is respectively fixedly equipped with an arc plate 1 (2) and a pillar (4); the inner wall of the arc plate 1 (2) is welded with a clamping plate (12); the outer wall of the clamping plate (12) is tightly fitted with a motor (5); the output shaft of the motor (5) is provided with a body (6); the outer wall of the arc plate 1 (2) is tightly fitted with an arc plate 2 (3); the top of the arc plate 1 (2) is provided with a docking groove (9); the outer wall of the arc plate 1 (2) is provided with a heat dissipation groove (7); the inner wall of the heat dissipation groove (7) is fixedly equipped with a water retaining strip (8); the bottom of the arc plate 2 (3) is fixedly equipped with a clamping plate (10); both sides of the clamping plate (10) are provided with mounting grooves (13); the inner wall of the mounting groove (13) is sleeved with a retaining spring (14); the end of the retaining spring (14) abuts against a retaining pin (11).

2. A multistage centrifugal pump according to claim 1, characterized in that: The number of the heat dissipation grooves (7) is five, and the five heat dissipation grooves (7) are evenly distributed along the outer wall of the arc-shaped plate one (2); the number of the water retaining strips (8) is eight, and the eight water retaining strips (8) are divided into two groups, and the two groups of water retaining strips (8) are symmetrically distributed along the outer wall of the arc-shaped plate one (2), wherein the spacing between every two water retaining strips (8) is 1 cm.

3. A multistage centrifugal pump according to claim 1, characterized in that: The shape and diameter of the clamping plate (10) are compatible with the shape and diameter of the docking groove (9); a circular hole is provided on the inner wall of the docking groove (9), and the inner wall of the circular hole is plugged into the outer wall of the clamping pin (11).

4. A multistage centrifugal pump according to claim 1, characterized in that: The arc plate one (2) is fixedly connected to the arc plate two (3) through the cooperation of the docking groove (9) and the clamping plate (10), and the motor (5) is fixedly connected to the connected arc plate one (2) and the arc plate two (3) through the clamping plate (12).

5. A multistage centrifugal pump according to claim 1, characterized in that: The number of the clamping plates (12) is four, three of the clamping plates (12) are located on the inner wall of the arc-shaped plate one (2), and another clamping plate (12) is located on the inner wall of the arc-shaped plate two (3), and the outer walls of the four clamping plates (12) are tightly fitted with the outer wall of the motor (5).

6. A multistage centrifugal pump according to claim 1, characterized in that: The latch (11) and the clamping plate (12) are both made of galvanized iron metal.

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