Centrifugal pump with semi-open impeller structure

Abstract

The utility model provides a centrifugal pump with a semi-open impeller structure, and belongs to the technical field of centrifugal pumps. The centrifugal pump with the semi-open impeller structure comprises a motor and a water pumping assembly. The water pumping assembly comprises a pump body shell, a semi-open type impeller, a supporting cover, a sealing cover and a pipe opening connecting piece, the pump body shell is arranged in front of the output shaft end of the motor, the semi-open type impeller is located in the pump body shell, the output shaft end of the motor is fixedly sleeved with the semi-open type impeller, and the pipe opening connecting piece is connected with the semi-open type impeller. The sealing cover is detachably and fixedly arranged at the end, close to the motor, of the pump body shell, and the supporting cover is fixedly installed on the side, away from the motor, of the sealing cover. Compared with a traditional closed impeller, the semi-open impeller has the advantages that when the semi-open impeller rotates to pump granular materials, the materials are not prone to sticking and blocking the interior of the semi-open impeller, and the granular materials have better pumping performance when conveyed; and meanwhile, internal components of the centrifugal pump capable of smoothly pumping materials are longer in service life.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal pumps, in particular to a centrifugal pump with a semi-open impeller structure. Background Art

[0002] Centrifugal pumps are widely used as a medium conveying device. Centrifugal pumps usually use closed impellers, and this type of design can only be used when the conveying medium is large. It cannot convey the medium in the field of small flow. If it is used to convey a medium with particles, the particles in the medium are easy to stick to the closed impeller, affecting the centrifugal force and the performance of the centrifugal pump's conveying medium. As a result, the granular material flows slowly and has a large friction when blocked, which will cause impact corrosion to the inside of the pump body, causing the pump body and its internal parts to wear too quickly, shortening the service life of the pump body. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a centrifugal pump with a semi-open impeller structure, aiming to improve the problem that when used to transport a medium containing particles, the particles in the medium are easily stuck in the closed impeller, affecting the centrifugal force and also affecting the performance of the centrifugal pump in transporting the medium.

[0004] The utility model is achieved in this way:

[0005] The utility model provides a centrifugal pump with a semi-open impeller structure, comprising a motor and a water pump assembly.

[0006] The water pump assembly includes a pump housing, a semi-open impeller, a support cover, a sealing cover and a pipe nozzle connector. The pump housing is arranged in front of the output shaft end of the motor, the semi-open impeller is located inside the pump housing, and the semi-open impeller is fixedly sleeved on the output shaft end of the motor. The sealing cover is detachably fixedly arranged on one end of the pump housing close to the motor, the support cover is fixedly installed on the side of the sealing cover away from the motor, the pipe nozzle connector is fixedly connected to the side of the pump housing away from the motor, and an inlet pipe nozzle is arranged on the end of the pipe nozzle connector away from the pump housing, and a water outlet pipe nozzle is arranged on the top of the pump housing.

[0007] In an embodiment of the utility model, the semi-open impeller includes a rear end cover and blades, the rear end cover is connected to the output shaft end of the motor, and the blades are fixedly arranged on a side of the rear end cover away from the motor.

[0008] In an embodiment of the utility model, six blades are provided, and the six blades are respectively arranged at an angle of 60°.

[0009] In an embodiment of the utility model, three baffle plates are fixedly connected to one side of the inner wall of the blade close to the rear end cover.

[0010] In an embodiment of the utility model, a mounting hole is provided in the middle of the rear end cover, a coupling is fixedly connected inside the mounting hole, and the coupling is fixedly sleeved on the output shaft end of the motor.

[0011] In an embodiment of the present utility model, a fixing piece is sleeved on the outside of the pipe mouth connecting piece, and the fixing piece is fixedly connected to the pump body shell.

[0012] In an embodiment of the utility model, a clamping block is arranged on one side of the support cover close to the pump housing, and a clamping groove matching with the clamping block is arranged inside the pump housing.

[0013] The beneficial effects of the utility model are as follows: the utility model obtains a centrifugal pump with a semi-open impeller structure through the above-mentioned design. When in use, the semi-open impeller and the support cover are installed inside the pump body shell. After the support cover is fixed, it is used to limit the semi-open impeller to prevent the semi-open impeller from slipping. The sealing cover is used to seal the internal space of the pump body shell, and the precipitation is isolated inside the pump body shell. The output shaft end of the motor drives the semi-open impeller to rotate, and the material enters the pump body shell from the water inlet pipe on one side of the pump body shell, and is discharged from the water outlet pipe after being pressurized by the semi-open impeller. Compared with the traditional closed impeller, when the semi-open impeller rotates to pump granular materials, the materials are not easy to stick to the inside of the semi-open impeller, and the granular materials have better pumping performance when conveying; at the same time, the internal components of the centrifugal pump with smooth pumping have a better service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of a centrifugal pump with a semi-open impeller structure provided by an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the explosion structure of a centrifugal pump with a semi-open impeller structure provided in an embodiment of the utility model;

[0017] Figure 3 A schematic diagram of a semi-open impeller structure provided for an embodiment of the utility model.

[0018] In the figure: 10-motor; 20-water pumping assembly; 210-pump body casing; 220-semi-open impeller; 221-rear end cover; 222-blades; 223-coupling; 224-baffle plate; 230-support cover; 240-sealing cover; 250-water outlet pipe; 260-water inlet pipe; 270-pipe port connector; 280-fixing part. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] See also Figure 1-Figure 3 The utility model provides a centrifugal pump with a semi-open impeller structure, including a motor 10 and a water pump assembly 20.

[0022] See also Figure 2 The pump assembly 20 includes a pump housing 210, a semi-open impeller 220, a support cover 230, a sealing cover 240 and a pipe nozzle connector 270. The pump housing 210 is arranged in front of the output shaft end of the motor 10, the semi-open impeller 220 is located inside the pump housing 210, and the semi-open impeller 220 is fixedly sleeved on the output shaft end of the motor 10. The sealing cover 240 is detachably fixedly arranged at one end of the pump housing 210 close to the motor 10, and the sealing cover 240 and the pump housing 210 are fixedly fixed by bolts. The support cover 230 is fixedly installed on the side of the sealing cover 240 away from the motor 10. The pipe nozzle connector 270 is fixedly connected to the side of the pump body housing 210 away from the motor 10, and the pipe nozzle connector 270 and the pump body housing 210 are fixed by welding; and a water inlet pipe nozzle 260 is provided at the end of the pipe nozzle connector 270 away from the pump body housing 210, and a water outlet pipe nozzle 250 is provided at the top of the pump body housing 210.

[0023] The semi-open impeller 220 and the support cover 230 are installed inside the pump housing 210. After the support cover 230 is fixed, it is used to limit the semi-open impeller 220 to prevent the semi-open impeller 220 from slipping. The sealing cover 240 is used to seal the internal space of the pump housing 210, and the precipitation is isolated inside the pump housing 210. The output shaft end of the motor 10 drives the semi-open impeller 220 to rotate, and the material enters the pump housing 210 from the water inlet port 260 on one side of the pump housing 210, and is discharged from the water outlet port 250 after being pressurized by the semi-open impeller 220. Compared with the traditional closed impeller, when the semi-open impeller 220 rotates to pump granular materials, the materials are not easy to stick to the inside of the semi-open impeller 220, and the granular materials have better pumping performance when conveying; at the same time, the internal components of the centrifugal pump with smooth pumping have a better service life.

[0024] In the above specific implementation, please refer to Figure 3 , the semi-open impeller 220 includes a rear end cover 221 and blades 222. The rear end cover 221 is connected to the output shaft end of the motor 10, and the blades 222 are fixedly arranged on the side of the rear end cover 221 away from the motor 10; the blades 222 and the rear end cover 221 are integrally formed. There are six blades 222, and the six blades 222 are respectively arranged at an angle of 60°. Three baffle plates 224 are fixedly connected to the inner wall of the blade 222 close to the rear end cover 221; the blades 222 and the baffle plates 224 are integrally formed. A mounting hole is provided in the middle of the rear end cover 221, and a coupling 223 is fixedly connected inside the mounting hole. The coupling 223 and the rear end cover 221 are integrally formed, and the coupling 223 is fixedly sleeved on the output shaft end of the motor 10; the coupling 223 and the output shaft end of the motor 10 are fixed by bolts.

[0025] The baffle plate 224 on the inner side of the blades 222 creates a turbulent flow in the cavity between the blades 222 , so that the cavity between the blades 222 is not easily blocked when pumping granular materials.

[0026] For specific settings, see Figure 2 The nozzle connector 270 is sleeved with a fixing member 280, which is fixedly connected to the pump housing 210; the fixing member 280 is used to reinforce the nozzle connector 270. The support cover 230 is provided with a block on one side close to the pump housing 210, and the pump housing 210 is provided with a slot that matches the block. The cooperation between the block and the slot facilitates the quick disassembly and assembly of the support cover 230 inside the pump housing 210.

[0027] It should be noted that the specific model and specifications of the motor 10 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail. The power supply and principle of the motor 10 are clear to those skilled in the art and will not be described in detail here.

[0028] The working principle of the centrifugal pump with a semi-open impeller structure is as follows: when in use, the semi-open impeller 220 and the support cover 230 are installed inside the pump housing 210. After the support cover 230 is fixed, it is used to limit the semi-open impeller 220 to prevent the semi-open impeller 220 from slipping. The sealing cover 240 is used to seal the internal space of the pump housing 210, and the precipitation is isolated inside the pump housing 210. The output shaft end of the motor 10 drives the semi-open impeller 220 to rotate, and the material enters the pump housing 210 from the water inlet port 260 on one side of the pump housing 210, and is discharged from the water outlet port 250 after being pressurized by the semi-open impeller 220. Compared with the traditional closed impeller, when the semi-open impeller 220 rotates to pump granular materials, the materials are not easy to stick to the inside of the semi-open impeller 220, and the granular materials have better pumping performance when conveying; at the same time, the internal components of the centrifugal pump with smooth pumping have a better service life.

[0029] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A centrifugal pump with a semi-open impeller structure, characterized in that: include Motor (10); A water pump assembly (20), the water pump assembly (20) comprising a pump housing (210), a semi-open impeller (220), a support cover (230), a sealing cover (240) and a pipe nozzle connector (270), the pump housing (210) being arranged in front of the output shaft end of the motor (10), the semi-open impeller (220) being located inside the pump housing (210), and the semi-open impeller (220) being fixedly sleeved on the output shaft end of the motor (10), and the sealing cover (240) being detachable. The support cover (230) is fixedly arranged on one end of the pump housing (210) close to the motor (10), the support cover (230) is fixedly installed on the side of the sealing cover (240) away from the motor (10), the pipe mouth connecting piece (270) is fixedly connected to the side of the pump housing (210) away from the motor (10), and a water inlet pipe mouth (260) is arranged on the end of the pipe mouth connecting piece (270) away from the pump housing (210), and a water outlet pipe mouth (250) is arranged on the top of the pump housing (210).

2. A centrifugal pump with a semi-open impeller structure according to claim 1, characterized in that: The semi-open impeller (220) comprises a rear end cover (221) and blades (222), wherein the rear end cover (221) is connected to the output shaft end of the motor (10), and the blades (222) are fixedly arranged on a side of the rear end cover (221) away from the motor (10).

3. A centrifugal pump with a semi-open impeller structure according to claim 2, characterized in that: The blades (222) are provided in six pieces, and the six blades (222) are arranged at an angle of 60° between each other.

4. A centrifugal pump with a semi-open impeller structure according to claim 3, characterized in that: Three baffle plates (224) are fixedly connected to one side of the inner wall of the blade (222) close to the rear end cover (221).

5. A centrifugal pump with a semi-open impeller structure according to claim 4, characterized in that: A mounting hole is provided in the middle of the rear end cover (221), a coupling (223) is fixedly connected inside the mounting hole, and the coupling (223) is fixedly sleeved on the output shaft end of the motor (10).

6. A centrifugal pump with a semi-open impeller structure according to claim 1, characterized in that: The pipe mouth connecting piece (270) is sleeved with a fixing piece (280) on the outside, and the fixing piece (280) is fixedly connected to the pump body shell (210).

7. A centrifugal pump with a semi-open impeller structure according to claim 1, characterized in that: A clamping block is provided on one side of the support cover (230) close to the pump housing (210), and a clamping groove matching the clamping block is provided inside the pump housing (210).

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