CN213205993U

CN213205993U - Self-suction type steady flow anti-vibration centrifugal pump

Info

Publication number: CN213205993U
Application number: CN202021708731.9U
Authority: CN
Inventors: 顾向东
Original assignee: Taicang Yinqiao Plastic Parts Co ltd
Current assignee: Taicang Yinqiao Plastic Parts Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-05-14
Anticipated expiration: 2030-08-17

Abstract

The utility model belongs to the technical field of the centrifugal pump, concretely relates to from inhaling formula stationary flow antidetonation centrifugal pump. The pump comprises a motor, a pump body, an output valve and a flow stabilizer; the motor is in power connection with the pump body, and the output end of the pump body is provided with an output valve; the output end of the pump body is also connected with a flow stabilizer through a manifold, and the manifold is positioned between the output valve and the pump body; the flow stabilizer comprises an upper shell, a lower shell and an elastic diaphragm; the upper shell and the lower shell are covered; the elastic diaphragm is arranged at the joint of the upper shell and the lower shell; the cavity formed by the elastic diaphragm and the upper shell in a surrounding way is an upper cavity, and the cavity formed by the elastic diaphragm and the lower shell in a surrounding way is a lower cavity; the bottom of the lower shell is provided with a lower connecting pipe communicated with the lower cavity, and the lower connecting pipe is connected with a manifold; an upper connecting pipe communicated with the upper cavity is arranged at the top of the upper shell; the upper connecting pipe is also provided with a gas stop valve in series. The utility model discloses it is rational in infrastructure reliable, installation and maintenance are convenient, can effectively alleviate the impact that centrifugal pump and outlet pipeline received, still have automatic pump priming function simultaneously.

Description

Self-suction type steady flow anti-vibration centrifugal pump

Technical Field

The utility model belongs to the technical field of the centrifugal pump, concretely relates to from inhaling formula stationary flow antidetonation centrifugal pump.

Background

The centrifugal pump has the advantages of compact structure, wide working range, convenient installation and maintenance and the like, and is widely applied to various fields of agriculture, chemical industry, petroleum, mining industry, metallurgy, ships, electric power and the like. In practical application, centrifugal pumps are mostly operated stably near a certain working point, and relevant parameters such as flow, pressure, rotating speed, power and the like of the centrifugal pumps are kept basically stable. However, there are some application scenarios that require the working condition of the centrifugal pump to be adjusted at any time or repeatedly started and closed according to a set program; there are some application scenarios, the centrifugal pump itself does not need to be adjusted, but the operating state of the fluid in the inlet and outlet pipelines connected with the centrifugal pump is complex and unstable, which also causes frequent fluctuation of the operating state of the centrifugal pump. For the application scene of frequent change of the working conditions, the outlet pipeline and the structure of the centrifugal pump such as an impeller, a sealing bearing and the like can be subjected to frequent hydraulic impact, the service life of the centrifugal pump and the outlet pipeline is influenced, and even safety production accidents are caused. In addition, before the conventional centrifugal pump is started, the liquid level is required to be manually pumped to enable the liquid level to be over the impeller, and the air in the centrifugal pump is discharged to enable the centrifugal pump to be started.

Disclosure of Invention

To the above-mentioned problem that prior art exists, the utility model provides a from inhaling formula stationary flow antidetonation centrifugal pump overcomes.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a self-priming steady-flow anti-shock centrifugal pump comprises a motor, a pump body, an output valve and a steady flow device; the motor is in power connection with the pump body, namely an output shaft of the motor is in power connection with an impeller in the pump body, and an output valve is arranged at the output end of the pump body; the output end of the pump body is also connected with a flow stabilizer through a manifold, and the manifold is positioned between the output valve and the pump body; the flow stabilizer comprises an upper shell, a lower shell and an elastic diaphragm; the upper shell and the lower shell are covered; the elastic diaphragm is arranged at the joint of the upper shell and the lower shell; the cavity formed by the elastic diaphragm and the upper shell in a surrounding way is an upper cavity, and the cavity formed by the elastic diaphragm and the lower shell in a surrounding way is a lower cavity; the bottom of the lower shell is provided with a lower connecting pipe communicated with the lower cavity, and the lower connecting pipe is connected with a manifold; an upper connecting pipe communicated with the upper cavity is arranged at the top of the upper shell; the upper connecting pipe is also provided with a gas stop valve in series.

When the centrifugal pump works, high-pressure gas, such as air, is filled in the upper chamber, and the pressure of the gas is the same as or close to the outlet pressure of the centrifugal pump under the main working condition. Because the lower chamber is connected with the outlet end of the centrifugal pump, the pressure of the lower chamber is consistent with the pressure of the outlet of the centrifugal pump, and the pressure of the lower chamber is transmitted to the upper chamber through the elastic diaphragm. The upper chamber is filled with a gas whose volume changes with the pressure in the lower chamber. When the pressure at the outlet end of the centrifugal pump suddenly changes, the gas in the upper chamber provides a buffer space for the centrifugal pump, so that the pressure change strength is greatly weakened, and the basic stability of the pressure at the outlet end of the centrifugal pump is maintained, thereby protecting other pipelines and workpieces connected with the outlet end of the centrifugal pump. For pulse pressure change, the device can greatly reduce the pulse intensity; for a stepwise pressure change, the device can convert an abrupt change into a slow change.

The utility model has the further preferable proposal that the input end of the pump body is also provided with a check valve; the lower connecting pipe is also connected with an inlet valve in series. After the check valve and the inlet valve are arranged, the centrifugal pump has a self-priming function and does not need manual priming. After one-time operation is finished, the output valve is closed, the gas stop valve is opened, pumped liquid is fully filled into the flow stabilizer, and then the inlet valve and the gas stop valve are closed, so that the pumped liquid is kept in the flow stabilizer. When the pump is next operated, the inlet valve and the gas stop valve are opened, the liquid flows into the pump body again under the action of the elastic diaphragm, and in addition, the gas is refilled into the flow stabilizer through the gas stop valve to further empty the liquid in the flow stabilizer, so that the pump filling is realized. In addition, the arrangement of the inlet valve is convenient for the online maintenance of the flow stabilizer.

The utility model has the further preferable proposal that the upper chamber comprises a first upper chamber, a second upper chamber and a connecting neck section; the first upper chamber is located below the second upper chamber, and the connecting neck section communicates the first upper chamber with the second upper chamber. Through the structural design, the position of the elastic diaphragm is limited in the first upper chamber and the first lower chamber, and the influence on the service life caused by the excessive deformation of the elastic diaphragm is avoided.

The utility model discloses a further preferred scheme is, the cavity top still is equipped with the air pump on the second. After the air pump is arranged, air can be pumped into the upper cavity through the air pump, so that the pump can be conveniently filled, and meanwhile, the pressure in the upper cavity can be conveniently adjusted.

The utility model has the further preferred proposal that the bottom surface of the lower chamber is in the shape of an arc, and the joint of the lower chamber and the elastic diaphragm is tangent with the elastic diaphragm; the top surface of the first upper chamber is arc-shaped, and the joint of the first upper chamber and the elastic diaphragm is tangent to the elastic diaphragm. The tangent design of the joint can protect the elastic diaphragm.

The utility model has the further preferable proposal that the elastic diaphragm is circular, and the edge is integrally connected with a clamping ring; the lower edge of the upper shell is provided with an upper groove matched with the clamping ring; the upper edge of the lower shell is provided with a lower groove matched with the clamping ring; the clamping ring is pressed between the upper groove and the lower groove. Through above-mentioned structural design guarantee that the installation of elasticity diaphragm is firm and sealed good.

The utility model has the further preferable proposal that the joint of the lower connecting pipe and the inner wall of the lower shell is also provided with a first porous clapboard; a second porous clapboard is also arranged at the joint of the connecting neck section and the inner wall of the first upper chamber. The first porous partition plate and the second porous partition plate are arranged, so that the position of the elastic diaphragm can be more effectively limited in the first upper chamber and the first lower chamber, the deformation of the elastic diaphragm can be guaranteed, and the service life of the elastic diaphragm is prolonged.

Has the advantages that: the utility model provides a from inhaling formula stationary flow antidetonation centrifugal pump, rational in infrastructure reliable, installation and maintenance are convenient, can effectively alleviate the impact that centrifugal pump and outlet pipeline received when the operating mode frequently changes, prolong the life of each relevant part, improve holistic stability and reliability. And simultaneously, the utility model provides a from inhaling formula stationary flow antidetonation centrifugal pump still has automatic pump priming function, and wholly is closed structure, can be applicable to the pump sending of corrosivity danger article.

Drawings

FIG. 1 is a schematic front view of an embodiment;

FIG. 2 is a schematic diagram showing an internal structure of a flow stabilizer in the embodiment;

fig. 3 is a schematic diagram of the fitting at the collar in the embodiment.

In the figure, a motor 2, a pump body 3, an output valve 4, a check valve 5, a flow stabilizer 1, an upper shell 11, a lower shell 12, an elastic diaphragm 13, an inlet valve 14, an air pump 15, a first porous partition 16, a second porous partition 17, an air stop valve 111, a first upper chamber 112, a second upper chamber 113, a connecting neck section 114, a clamping ring 131, an upper groove 115 and a lower groove 121.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

A self-priming steady-flow anti-shock centrifugal pump is shown in figures 1 to 3 and comprises a motor 2, a pump body 3, an output valve 4 and a steady flow device 1; the motor 2 is in power connection with the pump body 3, and the output end of the pump body 3 is provided with an output valve 4; the output end of the pump body 3 is also connected with a flow stabilizer 1 through a manifold, and the manifold is positioned between the output valve 4 and the pump body 3; the flow stabilizer 1 comprises an upper shell 11, a lower shell 12 and an elastic diaphragm 13; the upper shell 11 and the lower shell 12 are covered; the elastic diaphragm 13 is arranged at the joint of the upper shell 11 and the lower shell 12; a cavity formed by the elastic diaphragm 13 and the upper shell 11 in a surrounding manner is an upper cavity, and a cavity formed by the elastic diaphragm 13 and the lower shell 12 in a surrounding manner is a lower cavity; the bottom of the lower shell 12 is provided with a lower connecting pipe communicated with the lower chamber, and the lower connecting pipe is connected with a manifold; an upper connecting pipe communicated with the upper chamber is arranged at the top of the upper shell 11; the upper connecting pipe is also provided with a gas stop valve 111 in series.

Further, the input end of the pump body 3 is also provided with a check valve 5; an inlet valve 14 is also connected in series to the lower connecting pipe.

Further, the upper chamber comprises a first upper chamber 112, a second upper chamber 113 and a connecting neck segment 114; the first upper chamber 112 is located below the second upper chamber 113, and a connecting neck section 114 communicates the first upper chamber 112 with the second upper chamber 113.

Further, an air pump 15 is disposed at the top of the second upper chamber 113.

Further, the bottom surface of the lower chamber is in a circular arc shape, and the joint of the bottom surface and the elastic diaphragm 13 is tangent to the elastic diaphragm 13; the top surface of the first upper chamber 112 is in the shape of a circular arc, and the joint with the elastic diaphragm 13 is tangent to the elastic diaphragm 13.

Further, the elastic diaphragm 13 is circular, and a collar 131 is integrally connected to the edge; the lower edge of the upper shell 11 is provided with an upper groove 115 matched with the clamping ring 131; the upper edge of the lower shell 12 is provided with a lower groove 121 matched with the clamping ring 131; the collar 131 is compressed between the upper groove 115 and the lower groove 121.

Further, a first porous partition plate 16 is arranged at the joint of the lower connecting pipe and the inner wall of the lower shell 12; a second porous partition 17 is also provided at the junction of the connecting neck section 114 and the inner wall of the first upper chamber 112.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a from inhaling formula stationary flow antidetonation centrifugal pump which characterized in that: comprises a motor (2), a pump body (3), an output valve (4) and a flow stabilizer (1); the motor (2) is in power connection with the pump body (3), and an output valve (4) is arranged at the output end of the pump body (3); the output end of the pump body (3) is also connected with the flow stabilizer (1) through a manifold, and the manifold is positioned between the output valve (4) and the pump body (3); the flow stabilizer (1) comprises an upper shell (11), a lower shell (12) and an elastic diaphragm (13); the upper shell (11) is covered with the lower shell (12); the elastic diaphragm (13) is arranged at the joint of the upper shell (11) and the lower shell (12); the cavity formed by the elastic diaphragm (13) and the upper shell (11) in a surrounding manner is an upper cavity, and the cavity formed by the elastic diaphragm (13) and the lower shell (12) in a surrounding manner is a lower cavity; a lower connecting pipe communicated with the lower chamber is arranged at the bottom of the lower shell (12), and the lower connecting pipe is connected with the manifold; an upper connecting pipe communicated with the upper cavity is arranged at the top of the upper shell (11); the upper connecting pipe is also provided with a gas stop valve (111) in series.

2. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 1, characterized in that: the input end of the pump body (3) is also provided with a check valve (5); an inlet valve (14) is also connected in series on the lower connecting pipe.

3. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 2, characterized in that: the upper chamber comprises a first upper chamber (112), a second upper chamber (113) and a connecting neck section (114); the first upper chamber (112) is located below the second upper chamber (113), and the connecting neck section (114) communicates the first upper chamber (112) with the second upper chamber (113).

4. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 3, characterized in that: an air pump (15) is also arranged at the top of the second upper chamber (113).

5. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 3, characterized in that: the bottom surface of the lower chamber is arc-shaped, and the joint of the lower chamber and the elastic diaphragm (13) is tangent to the elastic diaphragm (13); the top surface of the first upper chamber (112) is arc-shaped, and the joint of the first upper chamber and the elastic diaphragm (13) is tangent to the elastic diaphragm (13).

6. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 5, characterized in that: the elastic diaphragm (13) is circular, and a clamping ring (131) is integrally connected to the edge of the elastic diaphragm; the lower edge of the upper shell (11) is provided with an upper groove (115) matched with the clamping ring (131); a lower groove (121) matched with the clamping ring (131) is formed in the upper edge of the lower shell (12); the collar (131) is pressed between the upper groove (115) and the lower groove (121).

7. The self-priming flow-stabilizing anti-vibration centrifugal pump according to claim 3, characterized in that: a first porous partition plate (16) is also arranged at the joint of the lower connecting pipe and the inner wall of the lower shell (12); a second porous clapboard (17) is also arranged at the joint of the connecting neck section (114) and the inner wall of the first upper chamber (112).