CN216344642U

CN216344642U - Simple shock absorber for outlet pipeline of metering pump

Info

Publication number: CN216344642U
Application number: CN202122339165.XU
Authority: CN
Inventors: 曾韬; 金屹方; 董静
Original assignee: Changshu San'ai Fuyuan New Material Co ltd
Current assignee: Changshu 3f Zhenfu New Materials Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-19
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to a simple shock absorber for an outlet pipeline of a metering pump, which is arranged on an outlet pipeline (7) of a metering pump (1), wherein a buffer pipeline (8) is led out from the middle part of the outlet pipeline (7), the shock absorber comprises a buffer tank (5) and an inflation device, the inflation device comprises an air supply mechanism (9) and an inflation tube (6), the inflation tube (6) is led out from the air supply mechanism (9), a buffer cavity for containing compressed air is arranged in the buffer tank (5), and an inflation inlet communicated with the inflation tube (6) and a buffer inlet communicated with the buffer pipeline (8) are respectively arranged on the buffer tank (5). Compared with the prior art, the vibration eliminating device can effectively eliminate the vibration of the outlet pipeline of the diaphragm metering pump, has strong universality, reduces the damage of continuous vibration to equipment and pipelines, and is convenient to overhaul.

Description

Simple shock absorber for outlet pipeline of metering pump

Technical Field

The utility model belongs to the technical field of pumps, and particularly relates to a simple shock absorber for an outlet pipeline of a metering pump.

Background

At present, more diaphragm metering pumps are adopted in tetrafluoroethylene monomer production devices. In practical use, the reciprocating motion of the metering pump has the problem of pressure pulse, which causes the pressure of the material outlet pipeline to fluctuate up and down, and also causes the large-amplitude vibration of the pipeline, so that a buffer is required to be arranged at the outlet of the metering pump.

At present, a buffer tank is basically adopted, a rubber bag is arranged in the buffer tank, the tank body is divided into two parts, one part is directly communicated with materials, and the other part is filled with certain compressed air.

The related document also discloses a pulse pressure damper which achieves pulse damping of pressure by using a buffer screw having stepped cylindrical fine holes at a lower end of a pressure gauge and a lower end of a buffer tank, and filling a certain amount of air in the buffer tank. The pulse pressure buffer has the defects of relatively complex structure, more sealing surfaces, leakage of gas in the buffer tank due to poor sealing at the pressure gauge and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a simple shock absorber for a metering pump outlet pipeline.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a simple and easy shock absorber for metering pump outlet pipe way, simple and easy shock absorber sets up on the outlet pipe way of metering pump, the buffer pipe way is drawn forth at the middle part to the outlet pipe way, the shock absorber includes buffer tank and aerating device, aerating device includes air feed mechanism and gas tube, the gas tube is drawn forth by air feed mechanism, be equipped with the cushion chamber that holds compressed air in the buffer tank, install the inflation inlet that communicates with the gas tube and the buffer inlet that is linked together with the buffer pipe way on the buffer tank respectively.

And a first valve is arranged on the buffer pipeline.

And a second valve is arranged on the inflation tube.

The first valve adopts a one-way valve.

And the second valve adopts a vent valve. If the pressure in the buffer tank exceeds the pressure bearing of the buffer tank, the vent valve can be opened for air release.

The valve is characterized in that a sensor is arranged on the first valve, a sensor is arranged on the second valve, and the sensor is electrically connected with the sensor. When fluid passes through the first valve, the pressure intensity change can be detected on the first sensor, so that the signal is transmitted to the second sensor, the second sensor is electrically connected with the switch of the second valve, and then an instruction can be sent to the second valve, so that the buffering effect is better realized.

And the contact position of the buffer pipeline and the buffer tank is subjected to sealing treatment.

The contact position of the inflation tube and the buffer tank is sealed. Guarantee that the buffering environment can not leak gas, so can guarantee the buffering effect.

Be located and be equipped with a plurality of main way valves on the export pipeline between measuring pump and the buffer pipeline, the main way valve includes No. three valves and No. four valves, No. three valves and No. four valves set gradually along ejection of compact direction.

The third valve adopts a hand valve.

The fourth valve adopts a one-way valve.

And a pressure sensor is arranged on an outlet pipeline between the main pipeline valve and the buffer pipeline. The pressure sensor can also be electrically connected with the first sensor and the second sensor, when the pressure sensor detects that the pressure fluctuation in the outlet pipeline is large, a standby instruction can be sent to the first sensor and the second sensor, so that the first sensor and the second sensor are ready to be started, and further the first valve and the second valve are ready to be started correspondingly.

The simple shock absorber further comprises a shock absorption auxiliary mechanism, the shock absorption auxiliary mechanism is arranged on the outer side of the buffer tank and comprises a base, a shock absorption main body, a buffer tank fixing ring and a hydraulic cylinder, the buffer tank fixing ring is used for accommodating the buffer tank, the buffer tank fixing ring is open, two ends of an opening are detachably connected with the shock absorption main body respectively, the hydraulic cylinder is arranged between the shock absorption main body and the base, and an output rod of the hydraulic cylinder is connected with the bottom of the shock absorption main body. If the pressure on the buffer tank is really overlarge, the energy generated by vibration can be transmitted to the vibration reduction auxiliary mechanism through the buffer tank, and the service life of the buffer tank is finally prolonged.

The top surface of damping main part is undercut's arc structure, the top of damping main part still is equipped with the recess, set up flexible cushion in the recess, the surface of flexible cushion and buffer tank contacts, the surface of flexible cushion and buffer tank contact is the arc setting. The damping main part can be better with the surge tank laminating to considering that the damping main part generally adopts the rigidity material to make, consequently more set up flexible cushion, can be favorable to the buffering of energy.

And a return spring is arranged between the bottom of the flexible cushion block and the groove. Some buffer tanks have slightly different sizes, and the damping body can be better adapted to the buffer tanks with different sizes through the return spring.

Damping spring is equipped with in the both sides of pneumatic cylinder, damping spring's upper end and damping bulk phase are connected, damping spring's lower extreme and base are connected. The vibration damping spring can transmit the vibration received by the vibration damping main body to the vibration damping spring, and the vibration damping effect is further enhanced.

In the utility model, the buffer tank and the gas-filled tube form a buffer chamber, when the metering pump is started, liquid materials pass through the third valve and the fourth valve, when the pressure in the outlet pipeline is increased, part of the liquid materials can enter the buffer chamber through the buffer pipeline, and along with the pulsation of the pressure of the metering pump materials, the gas in the buffer tank is pushed to be compressed in a reciprocating manner, namely, the vibration of the pressure is compressed and absorbed by the gas in the gas phase space in the buffer tank, and the gas in the buffer tank absorbs the energy caused by the pulse, so that the stable effect is achieved, the phenomenon of abnormal vibration of the outlet pipeline is reduced, and the normal conveying of the liquid phase materials is ensured.

Compared with the prior art, the utility model has the following advantages:

firstly, the application range is wide: the vibration of the outlet pipeline of the diaphragm metering pump can be effectively eliminated, and the universality is strong.

Secondly, the structure is simple: the buffer tank is arranged on the outlet pipeline, so that the gas pressure in the gas chamber is ensured to be changed within a certain range; the damage of continuous vibration to equipment and pipelines is reduced.

Thirdly, the overhaul is convenient: the simple damper is directly installed in a pipeline mode.

Drawings

FIG. 1 is a schematic view showing the connection relationship between a metering pump and a simple damper;

fig. 2 is a schematic structural view of the buffer tank arranged on the vibration damping auxiliary mechanism.

In the figure: 1-a metering pump; 2-valve number three; 3-valve number four; 4-a pressure sensor; 5-a buffer tank; 6-inflation tube; 7-an outlet pipe; 8-a buffer pipe; 9-an air supply mechanism; 10-valve number one; 11-valve number two; 12-a base; 13-a damping body; 14-a buffer tank fixing ring; 15-hydraulic cylinders; 16-a groove; 17-a flexible cushion block; 18-a return spring; 19-damping spring.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments.

Example 1

As shown in figure 1, a simple shock absorber for metering pump outlet pipeline is arranged on an outlet pipeline 7 of a metering pump 1, a buffer pipeline 8 is led out from the middle part of the outlet pipeline 7, a first valve 10 is arranged on the buffer pipeline 8, a first sensor is arranged on the first valve 10, the shock absorber comprises a buffer tank 5 and an inflation device, the inflation device comprises an air supply mechanism 9 and an inflation tube 6, the inflation tube 6 is led out from the air supply mechanism 9, a second valve 11 is arranged on the inflation tube 6, a second sensor is arranged on the second valve 11, the second sensor is electrically connected with the first sensor, a buffer cavity for containing compressed air is arranged in the buffer tank 5, an inflation inlet communicated with the inflation tube 6 and a buffer inlet communicated with the buffer pipeline 8 are respectively arranged on the buffer tank 5, the contact position of the buffer pipeline 8 and the buffer tank 5 is sealed, the contact position of the inflation tube 6 and the buffer tank 5 is sealed, be located to be equipped with a plurality of main road valves on the outlet pipe way 7 between measuring pump 1 and the buffer pipeline 8, main road valve includes No. 2 valves and No. 3 valves, and No. 2 valves and No. 3 valves set gradually along ejection of compact direction, and No. 2 valves adopt the hand valve, and No. 3 valves adopt the check valve, are located and are equipped with pressure sensor 4 on the outlet pipe way 7 between No. 3 valves and the buffer pipeline 8. The air supply mechanism 9 can be an existing device capable of supplying air.

Example 2

As shown in fig. 1 and 2, a simple damper for metering pump outlet pipes, which comprises a buffer tank and an inflator, and a damping auxiliary mechanism, wherein the damping auxiliary mechanism is disposed outside the buffer tank 5, at this time, the buffer tank is disposed horizontally, the damping auxiliary mechanism comprises a base 12, a damping main body 13, a buffer tank fixing ring 14 and a hydraulic cylinder 15 for accommodating the buffer tank 5, the buffer tank fixing ring 14 is open, two ends of the opening are respectively detachably connected (can be connected by bolts) with the damping main body 13, the top surface of the damping main body 13 is of an arc structure recessed downwards, a groove 16 is further disposed at the top of the damping main body 13, a flexible cushion block 17 is disposed in the groove 16, the flexible cushion block 17 contacts with the outer surface of the buffer tank 5, the surface of the flexible cushion block 17 contacting with the buffer tank 5 is in an arc arrangement, a return spring 18 is disposed between the bottom of the flexible cushion block 17 and the groove 16, the pneumatic cylinder 15 is located between damping main part 13 and the base 12, and the output rod of pneumatic cylinder 15 is connected with damping main part 13's bottom, and the both sides of pneumatic cylinder 15 are equipped with damping spring 19, and damping spring 19's upper end is connected with damping main part 13, and damping spring 19's lower extreme is connected with base 12.

The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a simple and easy shock absorber for measuring pump outlet pipe way, its characterized in that, simple and easy shock absorber sets up on outlet pipe way (7) of measuring pump (1), buffer pipeline (8) are drawn forth at the middle part in outlet pipe way (7), the shock absorber includes buffer tank (5) and aerating device, aerating device includes air feed mechanism (9) and gas tube (6), gas tube (6) are drawn forth by air feed mechanism (9), be equipped with the cushion chamber that holds compressed air in buffer tank (5), install the inflation inlet that communicates with gas tube (6) and the cushion that is linked together with buffer pipeline (8) on buffer tank (5) respectively.

2. The simple damper for a metering pump outlet conduit according to claim 1, characterized in that a first valve (10) is provided on the buffer conduit (8) and a second valve (11) is provided on the gas tube (6).

3. The simple shock absorber for a metering pump outlet pipe according to claim 2, wherein a first sensor is arranged on the first valve (10), a second sensor is arranged on the second valve (11), and the second sensor and the first sensor are electrically connected.

4. Simple damper for a metered pump outlet conduit according to claim 1, characterized in that the location where the buffer conduit (8) and the buffer tank (5) are in contact is sealed;

the contact position of the gas-filled tube (6) and the buffer tank (5) is sealed.

5. A simple damper for a metering pump outlet conduit according to claim 1, characterized in that a plurality of main circuit valves are provided on the outlet conduit (7) between the metering pump (1) and the buffer conduit (8).

6. Simple damper for a metering pump outlet conduit according to claim 5, characterized in that the outlet conduit (7) between the main circuit valve and the buffer conduit (8) is provided with a pressure sensor (4).

7. The simple shock absorber for the metering pump outlet pipeline of claim 1, further comprising a damping auxiliary mechanism, wherein the damping auxiliary mechanism is arranged outside the buffer tank (5), and comprises a base (12), a damping main body (13), a buffer tank fixing ring (14) for accommodating the buffer tank (5), and a hydraulic cylinder (15), wherein the buffer tank fixing ring (14) is open, two ends of the opening are respectively detachably connected with the damping main body (13), the hydraulic cylinder (15) is arranged between the damping main body (13) and the base (12), and an output rod of the hydraulic cylinder (15) is connected with the bottom of the damping main body (13).

8. The simple damper for a metering pump outlet pipe according to claim 7, characterized in that the top surface of the damping body (13) is of a downwardly concave arc structure, the top of the damping body (13) is further provided with a groove (16), a flexible cushion block (17) is arranged in the groove (16), the flexible cushion block (17) is in contact with the outer surface of the buffer tank (5), and the surface of the flexible cushion block (17) in contact with the buffer tank (5) is of an arc shape.

9. Simple damper for a metering pump outlet conduit according to claim 8, characterized in that a return spring (18) is provided between the bottom of the flexible pad (17) and the recess (16).

10. Simple damper for a metering pump outlet conduit according to claim 7, characterized in that the damping spring (19) is arranged on both sides of the hydraulic cylinder (15), the upper end of the damping spring (19) being connected to the damping body (13), and the lower end of the damping spring (19) being connected to the base (12).