阅读说明：本技术 一种开叶式离心泵 (Open-vane centrifugal pump ) 是由 章方敏 于 2018-07-09 设计创作，主要内容包括：本发明公开了一种开叶式离心泵,包括泵罩和电机,所述泵罩套设于电机的外部,所述泵罩的内底部设有装置槽,所述装置槽内通过多个阻尼减震器连接有支撑板,所述支撑板的两端均固定连接有滑块,所述装置槽的内壁上设有与滑块对应的插槽,所述插槽内固定连接有滑杆,所述滑块上设有与滑杆对应的滑口,所述电机的底部固定连接有多个支撑脚,所述支撑脚和支撑板之间通过多个紧固螺钉螺纹连接,所述泵罩的内顶部设有通口,所述通口内通过转轴转动连接有盖板。本发明通过减震机构和多处密封机构的设置,使装置可以对电机起到很好的减震作用,同时密封机构保证装置在水下的稳定性,从而保证离心泵的工作效率。(The invention discloses an open-blade centrifugal pump which comprises a pump cover and a motor, wherein the pump cover is sleeved outside the motor, a device groove is formed in the inner bottom of the pump cover, a supporting plate is connected in the device groove through a plurality of damping shock absorbers, sliding blocks are fixedly connected to two ends of the supporting plate, a slot corresponding to the sliding block is formed in the inner wall of the device groove, a sliding rod is fixedly connected in the slot, a sliding opening corresponding to the sliding rod is formed in the sliding block, a plurality of supporting legs are fixedly connected to the bottom of the motor, the supporting legs and the supporting plate are in threaded connection through a plurality of fastening screws, a through opening is formed in the inner top of the pump cover, and a cover plate is rotatably connected in the through a rotating shaft. According to the invention, through the arrangement of the damping mechanism and the sealing mechanisms, the device can play a good damping role on the motor, and meanwhile, the sealing mechanisms ensure the stability of the device under water, so that the working efficiency of the centrifugal pump is ensured.)

1. The open-vane centrifugal pump comprises a pump cover (1) and a motor (2), and is characterized in that the pump cover (1) is sleeved outside the motor (2), a device groove (3) is formed in the inner bottom of the pump cover (1), a supporting plate (5) is connected in the device groove (3) through a plurality of damping shock absorbers (4), sliding blocks (6) are fixedly connected to two ends of the supporting plate (5), inserting grooves corresponding to the sliding blocks (6) are formed in the inner wall of the device groove (3), sliding rods (7) are fixedly connected in the inserting grooves, and sliding openings corresponding to the sliding rods (7) are formed in the sliding blocks (6);

the bottom of the motor (2) is fixedly connected with a plurality of supporting legs (8), the supporting legs (8) are in threaded connection with the supporting plate (5) through a plurality of fastening screws (9), a through hole is formed in the inner top of the pump cover (1), a cover plate (11) is rotatably connected in the through hole through a rotating shaft (10), one end, far away from the rotating shaft (10), of the cover plate (11) is in threaded connection with a locking screw (12), a threaded groove corresponding to the locking screw (12) is formed in the inner wall of the through hole, and the output end of the motor (2) is fixedly connected with a rotating rod (13);

one side, close to the rotating rod (13), of the pump cover (1) is fixedly connected with a pump head (14), a water outlet pipe (15) is fixedly inserted in the inner top of the pump head (14), a water inlet pipe (16) is fixedly inserted in the inner wall, far away from one side of the pump cover (1), of the pump head (14), one end, far away from the motor (2), of the rotating rod (13) sequentially penetrates through the inner wall of the pump cover (1) and the outer wall of the pump head (14) and extends inwards, through holes corresponding to the rotating rod (13) are formed in the pump head (14) and the pump cover (1), and a plurality of impellers (17) are fixedly sleeved at the extending end of the rotating rod (13);

the one end that bull stick (13) are close to motor (2) is rotated and is cup jointed mechanical seal (18), one side and the inner wall of pump cover (1) of mechanical seal (18) offset, the one end that bull stick (13) are close to impeller (17) is rotated and is cup jointed first sealing washer (19), one side and the inner wall of pump head (14) of first sealing washer (19) offset.

2. The centrifugal pump according to claim 1, wherein the sliding rod (7) is sleeved with a spring (20), and two ends of the spring (20) are respectively fixedly connected with the sliding block (6) and the inner wall of the slot.

3. The centrifugal pump according to claim 1, wherein the rotating rod (13) is rotatably sleeved with a fastening sleeve (21), and one side of the fastening sleeve (21) is fixedly connected with the outer wall of the motor (2).

4. The centrifugal pump according to claim 1, wherein the rotating shaft (10) is sleeved with a torsion spring, and two ends of the torsion spring are fixedly connected with the cover plate (11) and the inner wall of the through opening respectively.

5. The centrifugal pump according to claim 1, wherein a plurality of steel balls (22) are slidably connected in the through-hole, and edges of the steel balls (22) are in contact with the rotating rod (13).

6. Centrifugal pump according to claim 1, characterized in that a plurality of connection screws (23) are fixedly connected to the bottom of the pump housing (1).

7. Centrifugal pump according to claim 1, characterized in that the mechanical seal (18) is made of graphite or silicon carbide.

8. The centrifugal pump of claim 1, wherein the ends of the water inlet pipe (16) and the water outlet pipe (15) close to the pump head (14) are fixedly sleeved with second sealing rings (24).

9. The centrifugal pump of claim 1, wherein the ends of the water inlet pipe (16) and the water outlet pipe (15) far away from the pump head (14) are fixedly sleeved with flanges (25).

Technical Field

The invention relates to the technical field of centrifugal pumps, in particular to an open-vane centrifugal pump.

Background

The centrifugal pump has various forms such as vertical type, horizontal type, single stage, multistage, single suction, double suction, self suction and the like. Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell.

But the damper and the sealing mechanism of the existing open-blade centrifugal pump are simpler, which can not effectively play a good damping role for the motor, and meanwhile, the sealing mechanism is easy to lose efficacy under high water pressure, thereby affecting the working efficiency of the centrifugal pump.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the problems that a damping mechanism and a sealing mechanism of a centrifugal pump with an open blade in the prior art are simple, cannot effectively play a good damping role on a motor, and meanwhile, the sealing mechanism is easy to lose efficacy under high water pressure.

2. Technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme:

a vane-opening centrifugal pump comprises a pump cover and a motor, wherein the pump cover is sleeved outside the motor, a device groove is formed in the inner bottom of the pump cover, a supporting plate is connected to the device groove through a plurality of damping shock absorbers, sliding blocks are fixedly connected to two ends of the supporting plate, an inserting groove corresponding to each sliding block is formed in the inner wall of the device groove, a sliding rod is fixedly connected to the inside of the inserting groove, and a sliding opening corresponding to each sliding rod is formed in each sliding block;

the bottom of the motor is fixedly connected with a plurality of supporting legs, the supporting legs are in threaded connection with the supporting plate through a plurality of fastening screws, a through hole is formed in the inner top of the pump cover, a cover plate is rotatably connected in the through hole through a rotating shaft, one end, far away from the rotating shaft, of the cover plate is in threaded connection with a locking screw, a threaded groove corresponding to the locking screw is formed in the inner wall of the through hole, and a rotating rod is fixedly connected to the output end of the motor;

one side, close to the rotating rod, of the pump cover is fixedly connected with a pump head, a water outlet pipe is fixedly inserted in the inner top of the pump head, a water inlet pipe is fixedly inserted in the inner wall, far away from the pump cover, of the pump head, one end, far away from the motor, of the rotating rod sequentially penetrates through the inner wall of the pump cover and the outer wall of the pump head and extends inwards, penetrating openings corresponding to the rotating rod are formed in the pump head and the pump cover, and a plurality of impellers are fixedly sleeved at the extending end of the rotating rod;

the one end that the bull stick is close to the motor is rotated and has been cup jointed mechanical seal, one side and the inner wall of pump cover of mechanical seal offset, the one end that the bull stick is close to the impeller is rotated and has been cup jointed first sealing washer, one side of first sealing washer offsets with the inner wall of pump head.

Preferably, the sliding rod is sleeved with a spring, and two ends of the spring are fixedly connected with the inner walls of the sliding block and the slot respectively.

Preferably, the rotating rod is rotatably sleeved with a fastening sleeve, and one side of the fastening sleeve is fixedly connected with the outer wall of the motor.

Preferably, the rotating shaft is sleeved with a torsion spring, and two ends of the torsion spring are fixedly connected with the cover plate and the inner wall of the through hole respectively.

Preferably, a plurality of steel balls are connected in the through opening in a sliding manner, and the edges of the steel balls are in contact with the rotating rod.

Preferably, a plurality of connection screws are fixedly connected to the bottom of the pump housing.

Preferably, the material of the mechanical seal ring is graphite or silicon carbide.

Preferably, the water inlet pipe and the water outlet pipe are fixedly sleeved with a second sealing ring at one end close to the pump head.

Preferably, the water inlet pipe and the water outlet pipe are fixedly sleeved with flange plates at the ends far away from the pump head.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) in the invention, the motor is firstly started to drive the rotating rod to rotate, so that the rotating rod drives the impeller to rotate, centrifugal force is generated to pump out water, meanwhile, the mechanical sealing ring can enhance the sealing performance of the device, and the arrangement of the first sealing ring can effectively prevent water from entering the pump cover, meanwhile, the arrangement of the second sealing ring can enhance the sealing property of the pump head, and the arrangement of the steel balls can reduce the friction force between the rotating rod and the inner wall of the through hole, meanwhile, the flange plate can be conveniently connected with a water outlet pipe and a water inlet pipe, and the support plate and the damping shock absorber are arranged, the invention can play a certain role in damping and supporting the motor, and the device can play a good role in damping the motor through the arrangement of the damping mechanism and the sealing mechanisms at multiple positions, meanwhile, the sealing mechanism ensures the stability of the device under water, thereby ensuring the working efficiency of the centrifugal pump.

(2) The setting of apron simultaneously, the component in the convenient pump bonnet is overhauld, and certain torsion supporting role can be played to the apron to torsion spring's setting simultaneously, and the setting of slide bar can prevent effectively that the backup pad from rocking simultaneously, and the spring can play certain elastic support effect to the backup pad, and connecting screw makes things convenient for fixing of device simultaneously, and fastening screw's setting conveniently dismantles the motor.

Drawings

FIG. 1 is a schematic structural view of an open-vane centrifugal pump according to the present invention;

FIG. 2 is a schematic top view of a centrifugal pump according to the present invention;

fig. 3 is a schematic structural view of a portion a of fig. 1.

In the figure: the device comprises a pump cover 1, a motor 2, a device groove 3, a damping shock absorber 4, a supporting plate 5, a sliding block 6, a sliding rod 7, a supporting foot 8, a fastening screw 9, a rotating shaft 10, a cover plate 11, a locking screw 12, a rotating rod 13, a pump head 14, a water outlet pipe 15, a water inlet pipe 16, an impeller 17, a mechanical sealing ring 18, a first sealing ring 19, a spring 20, a fastening sleeve 21, a steel ball 22, a connecting screw 23, a second sealing ring 24 and a flange 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.