CN213574770U

CN213574770U - Low pressure pump return flow exhaust apparatus

Info

Publication number: CN213574770U
Application number: CN202022530081.XU
Authority: CN
Inventors: 郭殿波; 徐路; 孟卫东; 刘明辉; 谢保华; 杜洪波
Original assignee: Shandong Xiangtong Rubber Plastic Technology Co ltd
Current assignee: Shandong Xiangtong Rubber Plastic Technology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-29
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a low-pressure pump return exhaust apparatus, including the low-pressure pump outlet pipe, low-pressure pump outlet pipe upper end is connected with back flow, first blast pipe, the one end that low-pressure pump outlet pipe was kept away from to first blast pipe is connected on the back flow lateral wall, the back flow is close to the bottom and is equipped with the second valve, be equipped with first valve on the first blast pipe, back flow upper end fixedly connected with closing cap, be connected with the second blast pipe on the closing cap, be equipped with in the back flow and carry out the shutoff mechanism of shutoff to the second blast pipe. The utility model discloses when realizing that the low-pressure pump is carminative, effectively avoid the leakage of liquid in the low-pressure pump, make liquid reflux in the low-pressure pump in order to utilize, avoid extravagant or pollute.

Description

Low pressure pump return flow exhaust apparatus

Technical Field

The utility model relates to a low-pressure pump technical field especially relates to a low-pressure pump return flow exhaust apparatus.

Background

The low-pressure pump is a centrifugal pump with rated lift of 1-100 m, and is used for driving water or liquid in a pipeline to circulate when production water can be recycled or is recycled after simple treatment, and air in the low-pressure pump cavity cannot play a role in pressurization, so that air needs to be exhausted from the low-pressure pump.

The exhaust valve is generally arranged on an outlet pipe of the low-pressure pump in the prior art, the low-pressure pump needs to be manually opened for exhausting, when liquid is exhausted, the valve is manually and quickly closed, but if the valve is not closed timely, a large amount of liquid is easily leaked, and waste or pollution is easily caused, so that the low-pressure pump backflow exhaust device needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a low-pressure pump return flow exhaust device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a low-pressure pump return exhaust apparatus, includes the low-pressure pump outlet pipe, low-pressure pump outlet pipe upper end is connected with back flow, first blast pipe, the one end that low-pressure pump outlet pipe was kept away from to first blast pipe is connected on the back flow lateral wall, the back flow is close to the bottom and is equipped with the second valve, be equipped with first valve on the first blast pipe, back flow upper end fixedly connected with closing cap, be connected with the second blast pipe on the closing cap, be equipped with in the back flow and carry out the shutoff mechanism of shutoff to the second blast pipe.

Preferably, the plugging mechanism comprises a movable rod arranged in a return pipe, a limiting part for limiting and guiding the movable rod is arranged in the return pipe, the upper end of the movable rod is connected with a plug, and the lower end of the movable rod is connected with a floating block.

Preferably, the locating part is established the stop collar on the movable rod including the cover, and stop collar and movable rod sliding connection, along three connecting rods of its circumference equidistant fixedly connected with on the lateral wall of stop collar, connecting rod fixed connection is on the inner wall of back flow.

Preferably, a fixing ring is fixedly connected to the inside of the return pipe, and the fixing ring is located below the floating block.

Preferably, a one-way exhaust valve is mounted on the second exhaust pipe.

Preferably, the closure is threadedly connected to the return tube.

The utility model has the advantages that:

by arranging the plugging mechanism and opening the first valve, the redundant gas in the outlet pipe of the low-pressure pump can be discharged through the first exhaust pipe, the gas is discharged into the return pipe and is discharged through the second exhaust pipe, when the surplus gas is exhausted, the liquid in the outlet pipe of the low-pressure pump is discharged into the return pipe and flows to the bottom, the liquid generates buoyancy to the floating block to move upwards, thereby moving the movable rod upwards and further driving the plug to move upwards to plug the second exhaust pipe, realizing the automatic closing of the second exhaust pipe, thereby preventing the liquid in the outlet pipe of the low-pressure pump from continuously flowing into the return pipe, preventing the liquid from being discharged through the first exhaust pipe and leaking, make liquid exist in the return line temporarily, close first valve again, open the second valve and can make the liquid reflux that keeps in the return line to low pressure pump outlet intraductal, and then when realizing exhaust, effectively avoid the leakage of low-pressure pump interior liquid.

Through setting up the locating part, it is spacing to reciprocating of movable rod through the stop collar for the movable rod is more stable when reciprocating, and then makes the jam shift up more inseparabler when plugging the second blast pipe.

The utility model discloses when realizing that the low-pressure pump is carminative, effectively avoid the leakage of liquid in the low-pressure pump, make liquid reflux in the low-pressure pump in order to utilize, avoid extravagant or pollute.

Drawings

Fig. 1 is a schematic structural view of a low-pressure pump return exhaust apparatus provided by the present invention;

fig. 2 is a schematic structural diagram of a locating part of a low-pressure pump return exhaust apparatus according to the present invention.

In the figure: the device comprises a low-pressure pump outlet pipe 1, a first exhaust pipe 2, a first valve 3, a return pipe 4, a second valve 5, a fixed ring 6, a floating block 7, a movable rod 8, a plug 9, a sealing cover 10, a second exhaust pipe 11, a one-way exhaust valve 12, a limiting sleeve 13 and a connecting rod 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all 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, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a low-pressure pump backflow exhaust device, including low-pressure pump outlet pipe 1, low-pressure pump outlet pipe 1 upper end is connected with back flow 4, first blast pipe 2, the one end that low-pressure pump outlet pipe 1 was kept away from to first blast pipe 2 is connected on the 4 lateral walls of back flow, back flow 4 is close to the bottom and is equipped with second valve 5, be equipped with first valve 3 on the

first blast pipe

2, 4 upper ends fixedly connected with closing cap 10 of back flow, closing

cap

10 and 4 threaded connection of back flow, be connected with second blast pipe 11 on the closing cap 10, install one-way discharge valve 12 on the second blast pipe 11, avoid external air refluence to the back flow 4 in, be equipped with the shutoff mechanism that carries out the shutoff to second.

The utility model discloses in, shutoff mechanism is including setting up the movable rod 8 in back flow 4, be equipped with the locating part to the spacing direction of movable rod 8 in the back flow 4, the upper end of movable rod 8 is connected with and blocks up 9, the lower extreme of movable rod 8 is connected with kicking block 7, liquid flows to the bottom in discharging back flow 4 in the low-pressure pump outlet pipe 1, liquid produces buoyancy to kicking block 7 and makes it move on it, and then make movable rod 8 shift up, and then drive and block up 9 and shift up and carry out the shutoff to second blast pipe 11, and then avoid liquid to continue to discharge through first blast pipe 2 in the low-pressure pump outlet pipe 1, avoid liquid leakage, make liquid temporarily exist in back flow 4.

Specifically, the limiting part comprises a limiting sleeve 13 sleeved on the movable rod 8, the limiting sleeve 13 is slidably connected with the movable rod 8, three connecting rods 14 are fixedly connected to the side wall of the limiting sleeve 13 at equal intervals along the circumferential direction of the side wall, and the connecting rods 14 are fixedly connected to the inner wall of the return pipe 4.

Specifically, the fixed ring 6 is fixedly connected in the return pipe 4, the fixed ring 6 is located below the floating block 7, and after the liquid temporarily stored in the return pipe 4 flows back, the floating block 7 moves downwards to block the fixed ring 6.

When the utility model is used, the first valve 3 is opened, the redundant gas in the outlet pipe 1 of the low-pressure pump can be discharged through the first exhaust pipe 2, the gas is discharged into the return pipe 4 and discharged through the second exhaust pipe 11, when the redundant gas is discharged, the liquid in the outlet pipe 1 of the low-pressure pump is discharged into the return pipe 4 and flows to the bottom, the liquid generates buoyancy on the floating block 7 to move upwards, the movable rod 8 is further moved upwards, the plug 9 is further driven to move upwards to plug the second exhaust pipe 11, further the liquid in the outlet pipe 1 of the low-pressure pump is prevented from continuously flowing into the return pipe 4, the liquid is prevented from being discharged through the first exhaust pipe 2 and leaking, the liquid is temporarily stored in the return pipe 4, the first valve 3 is closed again, the liquid temporarily stored in the return pipe 4 can be returned into the outlet pipe 1 of the low-pressure pump by opening the second valve 5, further, the leakage of the liquid in the low, the second valve 5 is closed again to complete the primary exhaust.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a low-pressure pump backflow exhaust apparatus, includes low-pressure pump outlet pipe (1), its characterized in that, low-pressure pump outlet pipe (1) upper end is connected with back flow (4), first blast pipe (2), the one end that low-pressure pump outlet pipe (1) was kept away from in first blast pipe (2) is connected on back flow (4) lateral wall, back flow (4) are close to the bottom and are equipped with second valve (5), be equipped with first valve (3) on first blast pipe (2), back flow (4) upper end fixedly connected with closing cap (10), be connected with second blast pipe (11) on closing cap (10), be equipped with in back flow (4) and carry out the shutoff mechanism of shutoff to second blast pipe (11).

2. The low-pressure pump backflow exhausting device according to claim 1, wherein the blocking mechanism comprises a movable rod (8) arranged in the backflow pipe (4), a limiting part for limiting and guiding the movable rod (8) is arranged in the backflow pipe (4), the upper end of the movable rod (8) is connected with a plug (9), and the lower end of the movable rod (8) is connected with a floating block (7).

3. The low-pressure pump backflow exhaust device according to claim 2, wherein the limiting member comprises a limiting sleeve (13) sleeved on the movable rod (8), the limiting sleeve (13) is slidably connected with the movable rod (8), three connecting rods (14) are fixedly connected to the side wall of the limiting sleeve (13) at equal intervals along the circumferential direction of the limiting sleeve, and the connecting rods (14) are fixedly connected to the inner wall of the backflow pipe (4).

4. A low pressure pump return bleed arrangement as claimed in claim 2, characterised in that a securing ring (6) is fixedly connected to the inside of the return pipe (4), and in that the securing ring (6) is located below the float (7).

5. A low pressure pump return exhaust apparatus as claimed in claim 1, wherein a one-way exhaust valve (12) is mounted on the second exhaust pipe (11).

6. A low pressure pump return bleed arrangement as claimed in claim 1, characterised in that the closure cap (10) is screwed to the return pipe (4).