CN215979949U - Vertical self-priming pump - Google Patents

Abstract

The utility model discloses a vertical self-priming pump which comprises a pump body and a bottom cover, wherein the bottom cover is installed inside the lower end of the pump body, the center below the inner wall of the pump body is rotationally connected with an impeller through a lower sealing ring, the center of the lower part of the impeller is fixedly connected with the tail end of a pump shaft through an impeller nut, an output shaft of a motor is rotationally connected with the pump shaft through an elastic cancellation coupling, and a valve plate is installed on the inner wall of the left end of the pump body. This vertical self priming pump, through the pump shaft, the impeller, the drainage flange, the flange of intaking, the cooperation between valve plate and the motor, the pump shaft can drive the impeller and carry out high-speed the rotation, impeller department can produce suction in the use, inhale rivers, when self priming pump stopped to use, the valve plate can restrict rivers backward flow, when rivers remove from the right side left, the valve plate can tightly press and form sealedly in the flange department of intaking, the problem of current vertical self priming pump can't prevent the liquid backward flow under the pump service behavior in the department of intaking has been avoided.

Description

Vertical self-priming pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a vertical self-priming pump.

Background

The self-priming pump belongs to the self-priming centrifugal pump, it has compact structure, convenient operation, operate steadily, it is easy to maintain, high efficiency, long service life, and have advantages such as stronger self-priming ability, the pipeline does not need to install the bottom valve, it can only to guarantee that the storage has the ration to draw liquid in the pump body before the work, different liquid can adopt different materials self-priming pump, the theory of operation of self-priming pump is that fill water in the pump case before the water pump starts, although current vertical self-priming pump can realize the pump water use, but prior art has vertical self-priming pump and can't prevent the problem of liquid backward flow under the pump service behavior not in water inlet department when using.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vertical self-priming pump, which solves the problem that the liquid cannot be prevented from flowing back when the pump is not used at the water inlet end of the vertical self-priming pump in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a vertical self-priming pump comprises a pump body and a bottom cover, wherein the bottom cover is arranged inside the lower end of the pump body, the center below the inner wall of the pump body is rotationally connected with the impeller through a lower sealing ring, the center of the lower part of the impeller is fixedly connected with the tail end of the pump shaft through an impeller nut, the lower part of the outer wall of the pump shaft is rotationally connected with a sealed cabin through a mechanical seal, the upper part of the sealed cabin is fixedly connected with a pump body through a bearing seat, the upper side and the lower side of the inner wall of the bearing seat are respectively connected with the pump shaft through a first bearing and a second bearing in a rotating way, the upper end of the pump body is fixedly connected with a motor through a large bracket, an output shaft of the motor is rotationally connected with a pump shaft through an elastic cancellation coupling, a valve plate is hinged on the inner wall of the left end of the pump body, a bearing gland is fixedly connected above the first bearing, the upper outer side of the impeller is rotatably connected with an upper sealing ring, and the outer wall of the sealed cabin is fixedly connected with an anti-rotation plate.

Preferably, the left end of the pump body is provided with a water inlet flange through a bolt.

Preferably, the right end of the pump body is provided with a water outlet flange through a bolt.

Preferably, the end of the inner wall of the impeller nut is provided with a backstop gasket.

Compared with the prior art, the utility model has the beneficial effects that: this vertical self priming pump, through the pump shaft, the impeller, the drainage flange, the flange of intaking, cooperation between valve plate and the motor, the pump shaft can drive the impeller and carry out high-speed the rotation, impeller department can produce suction in the use, inhale rivers, and finally make rivers discharge from the drainage flange, and because install the valve plate on the right side of the flange of intaking, when the self priming pump stops to use, the valve plate can restrict rivers backward flow, when rivers remove from the right side left, the valve plate can tightly press and form sealedly in the flange department of intaking, the problem of current vertical self priming pump can't prevent the liquid backward flow under the pump service behavior in the department of intaking has been avoided.

Drawings

FIG. 1 is a schematic front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the structure at I in FIG. 1;

fig. 3 is a schematic bottom view of the present invention.

In the figure: 1. the water pump comprises a bottom cover, 2, a pump body, 3, a guide vane, 4, a lower sealing ring, 5, an impeller nut, 6, a backstop gasket, 7, an impeller, 8, a valve plate, 9, a water inlet flange, 10, a first bearing, 11, a bearing gland, 12, an elastic cancellation coupler, 13, a large bracket, 14, a motor, 15, a pump shaft, 16, a water outlet flange, 17, a bearing seat, 18, a second bearing, 19, a sealing cabin, 20, a rotation preventing plate, 21, a mechanical seal, 22 and an upper sealing ring.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a vertical self-priming pump comprises a pump body 2 and a bottom cover 1, the bottom cover 1 is arranged inside the lower end of the pump body 2, the center below the inner wall of the pump body 2 is rotatably connected with an impeller 7 through a lower sealing ring 4, the pump body 2 can support the impeller 7 to rotate, the center below the lower part of the impeller 7 is fixedly connected with the tail end of a pump shaft 15 through an impeller nut 5, the lower part below the outer wall of the pump shaft 15 is rotatably connected with a sealed cabin 19 through a mechanical seal 21, the sealed cabin 19 and the lower sealing ring 4 can realize the rotary seal of the pump shaft 15 and the impeller 7, the upper part of the sealed cabin 19 is fixedly connected with the pump body 2 through a bearing seat 17, the upper side and the lower side of the inner wall of the bearing seat 17 are respectively rotatably connected with the pump shaft 15 through a first bearing 10 and a second bearing 18, the upper end of the pump body 2 is fixedly connected with a motor 14 through a big bracket 13, the output shaft of the motor 14 is rotatably connected with the pump shaft 15 through an elastic cancellation coupling 12, the left end inner wall of the pump body 2 is hinged with a valve plate 8, a bearing gland 11 is fixedly connected to the upper portion of the first bearing 10, an upper sealing ring 22 is rotatably connected to the outer side of the upper portion of the impeller 7, a rotation preventing plate 20 is fixedly connected to the outer wall of the sealing cabin 19, a water inlet flange 9 is installed at the left end of the pump body 2 through bolts, a water outlet flange 16 is installed at the right end of the pump body 2 through bolts, and a stopping gasket 6 is installed at the tail end of the inner wall of the impeller nut 5.

When the vertical self-priming pump is required to be used, firstly, a user can connect the pump body 2 with an external pipeline through the water inlet flange 9 and the water outlet flange 16 on two sides, when the vertical self-priming pump is required to be used, the motor 14 is started, an output shaft of the motor 14 drives the pump shaft 15 to rotate through the elastic cancellation coupler 12, the pump shaft 15 can drive the impeller 7 to rotate at a high speed, the impeller 7 generates suction force in the use process, water flow is sucked in and finally discharged from the water discharge flange 16, the water flow always flows along the groove of the guide vane 3 in the process, the valve plate 8 is arranged on the right side of the water inlet flange 9, the valve plate 8 can rotate anticlockwise around the upper part to be opened, the self-priming pump can convey the water flow from the left side to the right side, when the self-priming pump is stopped to be used, the valve plate 8 can limit the backflow of the water flow, and when the water flow moves from the right side to the left side, the valve plate 8 can tightly press the water inlet flange 9 to form a seal, the problem that the existing vertical self-sucking pump cannot prevent liquid from flowing back under the condition that the pump is not used at the water inlet end is solved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a vertical self priming pump, includes the pump body (2) and bottom (1), the lower extreme internally mounted of the pump body (2) has bottom (1), its characterized in that: the pump is characterized in that the center below the inner wall of the pump body (2) is rotationally connected with an impeller (7) through a lower sealing ring (4), a guide vane (3) is installed on the outer side of the impeller (7), the center of the lower part of the impeller (7) is fixedly connected with the tail end of a pump shaft (15) through an impeller nut (5), the lower part of the outer wall of the pump shaft (15) is rotationally connected with a sealed cabin (19) through a mechanical seal (21), the upper part of the sealed cabin (19) is fixedly connected with the pump body (2) through a bearing seat (17), the upper side and the lower side of the inner wall of the bearing seat (17) are rotationally connected with the pump shaft (15) through a first bearing (10) and a second bearing (18) respectively, the upper end of the pump body (2) is fixedly connected with a motor (14) through a big bracket (13), the output shaft of the motor (14) is rotationally connected with the pump shaft (15) through an elastic cancellation coupling (12), the left end inner wall of the pump body (2) is hinged with a valve plate (8), a bearing gland (11) is fixedly connected to the upper portion of the first bearing (10), a sealing ring (22) is connected to the upper portion of the impeller (7) in a rotating mode, and a rotation preventing plate (20) is fixedly connected to the outer wall of the sealing cabin (19).

2. The vertical self-primer pump of claim 1 wherein: and a water inlet flange (9) is installed at the left end of the pump body (2) through a bolt.

3. The vertical self-primer pump of claim 1 wherein: and a water outlet flange (16) is arranged at the right end of the pump body (2) through a bolt.

4. The vertical self-primer pump of claim 1 wherein: and a backstop gasket (6) is arranged at the tail end of the inner wall of the impeller nut (5).

Images