CN211737464U

CN211737464U - Emptying-proof device of self-priming pump

Info

Publication number: CN211737464U
Application number: CN201922262684.3U
Authority: CN
Inventors: 李磊; 夏明�
Original assignee: Anhui Wanyi Science and Technology Co Ltd
Current assignee: Anhui Wanyi Science and Technology Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-23
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses an emptying devices is prevented to self priming pump, including the self priming pump body, the water inlet and the delivery port of the self priming pump body are connected with first pipeline and second pipeline respectively, the water inlet of the self priming pump body passes through first tube coupling water source, the delivery port of the self priming pump body passes through second tube coupling terminal, the height of the self priming pump body is greater than the height of water source, be connected with in the first pipeline and prevent the evacuation pipe, wherein, the pipe diameter of preventing the evacuation pipe is 1.5 times for the pipeline pipe diameter of first pipeline at least, just the volume of preventing the evacuation pipe does at least the volumetric half of the stock solution of the self priming pump body. The utility model discloses can effectually restrain the self priming pump and produce the phenomenon of siphon after shutting down, guarantee the effective operation of self priming pump.

Description

Emptying-proof device of self-priming pump

Technical Field

The utility model relates to a self priming pump tube coupling technique, in particular to self priming pump anti-emptying device.

Background

In the prior art, when the self-priming pump works, the impeller rotates at a high speed to form vacuum at an inlet after the self-priming pump is started by means of liquid storage in a pump shell, and air in the pump is discharged to achieve self-priming liquid discharge. However, after the self-priming pump is stopped, the pressure in the pump disappears, and siphon backflow can be generated. The siphon process can lead to the interior stock solution of pump case of self priming pump to reduce, the evacuation even to lead to the self priming pump stock solution not enough, make the self priming pump can not automatic imbibition rapidly, can lead to the self priming pump to be unable to normally work because of inhaling the stock solution when serious.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model aims to provide a self priming pump emptying devices is prevented, the device can effectually restrain the self priming pump and produce the phenomenon of siphon after shutting down, has guaranteed the effective operation of self priming pump.

The utility model provides a technical scheme that its technical problem adopted does: the utility model provides an emptying devices is prevented to self priming pump, includes the self priming pump body, the water inlet and the delivery port of the self priming pump body are connected with first pipeline and second pipeline respectively, the water inlet of the self priming pump body is through first tube coupling water source, the delivery port of the self priming pump body passes through second tube coupling terminal, the height that highly is greater than of the self priming pump body the height at water source, be connected with in the first pipeline and prevent the evacuation pipe, wherein, the pipe diameter that prevents the evacuation pipe is 1.5 times of the pipeline pipe diameter of first pipeline at least, just the volume that prevents the evacuation pipe does at least the volumetric half of the stock solution of the self priming pump body.

Optionally, the axis of the evacuation-proof pipe is distributed along the vertical direction, so that the two ends of the evacuation-proof pipe are distributed in an up-down manner.

Optionally, the water inlet of the self-priming pump body is connected with the first pipeline through a first reducer pipe.

Optionally, two ends of the evacuation prevention pipe are respectively connected with the first pipeline through a second reducer pipe.

Optionally, the first pipeline includes horizontal segment and vertical section, connect through elbow bend between horizontal segment and the vertical section, prevent that the evacuation pipe is installed in the vertical section.

Optionally, the length of the emptying prevention pipe is 200 mm.

Adopt above-mentioned technical scheme, the utility model discloses be connected with the diameter at least and be the evacuation pipe of preventing that first pipeline pipe diameter is 1.5 times in the first pipeline of the water inlet of connecting the self priming pump body, when siphon effect produces, the air gets into the evacuation pipe with water simultaneously, because the sectional area of first pipeline is less than the sectional area of preventing the evacuation pipe, when the air gets into by first pipeline and prevents the evacuation pipe, the surface tension of the surface of water is not enough to make the air be pressed below the surface of water, thereby make the air can puncture the surface of water, arrive in the first pipeline of upper end, thereby make the water in the first pipeline divide into two sections by the air, the prerequisite that the siphon produced has been destroyed, after the siphon, water in the evacuation pipe supplyes the stock solution in the pump case of the self priming pump body because of action of gravity flow back, guarantee that the self priming pump body can normally work after.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the utility model discloses an emptying device is prevented to self priming pump, this emptying device is prevented to self priming pump include the self priming pump body 1, and the water inlet and the delivery port of the self priming pump body 1 are connected with first pipeline 2 and second pipeline 3 respectively, and wherein, the water source 4 is connected through first pipeline 2 to the water inlet of the self priming pump body 1, and the delivery port of the self priming pump body 1 passes through 3 connection terminal of second pipeline. Under the usual condition, when the self priming pump body 1 was adopted water, the position height that the self priming pump body 1 was placed was greater than the height at water source, for example, in surface water monitoring, the water sample that awaits measuring in with the river course through the self priming pump body 1 was taken out and is taken out to the monitoring station, and at this moment, the self priming pump body 1 was installed on the bank in river course, and this moment, the height of the self priming pump body 1 will be higher than the surface of water height at water source 4. When the self-priming pump body 1 is shut down after working, the pump internal pressure of the self-priming pump body disappears, and siphon backflow can be generated. The siphon process can lead to the stock solution to reduce in the pump case of the self priming pump body 1, evacuation even to lead to the self priming pump stock solution not enough, make the self priming pump can not automatic imbibition rapidly, can lead to the self priming pump to be unable to work normally because of inhaling the unable stock solution of going up when serious.

To this, the utility model discloses be connected with in first pipeline 2 and prevent evacuation pipe 5, wherein, the pipe diameter of preventing evacuation pipe 5 is 1.5 times of the pipe diameter of first pipeline 2 at least, and prevents that the volume of evacuation pipe 5 is half the stock solution volume of the self priming pump body 1 at least. Use this structure, when the siphon effect produced, air and water get into simultaneously prevent evacuation pipe 5, because the sectional area of first pipeline 2 is less than the sectional area of preventing evacuation pipe 5, when the air got into by first pipeline 2 and prevents evacuation pipe 5, the surface tension of the surface of water is not enough to make the air be pressed below the surface of water, thereby make the air puncture the surface of water, reach in the first pipeline 2 of upper end, thereby make the water in the first pipeline 2 divide into two sections by the air, the essential condition that the siphon produced has been destroyed, after the siphon, prevent that the water in the evacuation pipe 5 from because of the action of gravity flow back to supplying the stock solution in the pump case of the self priming pump body 1, guarantee that the self priming pump body 1 can normally work after restarting.

The utility model discloses in, prevent that the axis of evacuation pipe 5 distributes along the vertical direction, makes the both ends of preventing evacuation pipe 5 be the following formula and distributes, that is to say, prevents that evacuation pipe 5 is vertical installation to in order to reach and prevent that the water in evacuation pipe 5 can flow back under the action of gravity. By the way, the utility model discloses in, first pipeline 2 includes horizontal segment and vertical section, connects through elbow bend between horizontal segment and the vertical section, prevents that evacuation pipe 5 installs in vertical section.

The utility model discloses in, the water inlet of the self priming pump body 1 is through first reducing pipe 6 connection first pipeline 2, and prevents that the both ends of evacuation pipe 5 are respectively through second reducing pipe 7 connection first pipeline 2.

The invention will be further described below with reference to a specific embodiment.

The pipeline connection of the self-priming pump body 1 is as follows:

1) the water inlet of the self-priming pump body 1 is directly connected with the phi 32 external wire, and then is directly connected with the phi 20 first pipeline 2 through the phi 32 x phi 20 first reducer pipe 6. The purpose of this connected mode is to reduce the inlet pipeline of self priming pump body 1 to the first pipeline 2 that the diameter is less through first reducing pipe 6. Certainly, then need not to adopt first reducing pipe 6 when the water inlet size of the self priming pump body 1 is less than 20mm, for example, can not need to use first reducing pipe 6 when the water inlet of the self priming pump body 1 is less than.

2) After the first reducer pipe 6 is connected with the first pipeline 2, the first pipeline 2 is connected with a loose joint of phi 20, then the loose joint is connected with a phi 20 elbow, one end of the elbow is horizontal, and the other end of the elbow is vertical upwards.

3) The loose joint is directly connected with a second reducer pipe 7 with phi 63 phi 20, then is connected with a section of evacuation-preventing pipe 5 with the length of 200mm and the diameter of phi 63, and then is directly reduced into a first pipeline 2 with phi 20 by using another second reducer pipe 7 with phi 63 phi 20.

4) The first pipeline 2 is connected with a phi 20 slipknot, then is converted into the horizontal direction through a phi 20 elbow, is converted into the first pipeline 2 in the horizontal direction, is converted into the vertical direction through another phi 20 elbow, and finally is guided to a water source.

5) The first pipeline 3 of connecting self priming pump body 1 is connected according to actual demand can.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.

Claims

1. The utility model provides an emptying devices is prevented to self priming pump, a serial communication port, including the self priming pump body, the water inlet and the delivery port of the self priming pump body are connected with first pipeline and second pipeline respectively, the water inlet of the self priming pump body passes through first tube coupling water source, the delivery port of the self priming pump body passes through second tube coupling terminal, the height that highly is greater than of the self priming pump body is greater than the height at water source, be connected with in the first pipeline and prevent the evacuation pipe, wherein, the pipe diameter of preventing the evacuation pipe is 1.5 times for the pipeline pipe diameter of first pipeline at least, just the volume of preventing the evacuation pipe does at least the volumetric half of stock solution of the self priming pump body.

2. The self-primer pump evacuation prevention device of claim 1, wherein the axis of said evacuation prevention tube is vertically oriented such that the ends of said evacuation prevention tube are vertically oriented.

3. The self-primer pump evacuation apparatus of claim 2, wherein the water inlet of the self-primer pump body is connected to the first tubing via a first reducer.

4. The self-primer pump evacuation prevention device of claim 3, wherein both ends of said evacuation prevention tube are connected to said first tubing via a second reducer tube, respectively.

5. The self-primer pump evacuation prevention device of claim 4, wherein the first tubing comprises a horizontal segment and a vertical segment, the horizontal segment and the vertical segment being connected by a quarter bend, the evacuation prevention tube being mounted in the vertical segment.

6. The self-primer pump evacuation prevention device of claim 5, wherein the evacuation prevention tube is 200mm in length.