Metering pump with buffering and damping structure at pump outlet

Abstract

The utility model relates to the technical field of metering pumps, in particular to a metering pump with a buffer vibration reduction structure at a pump outlet, a buffer tank, a damper and a flexible connecting pipe which are arranged at an outlet pipeline of a pump body work cooperatively, and interference of liquid pressure fluctuation and vibration on the conveying process of the pump is effectively reduced. The buffer tank is matched with the air cavity through the elastic diaphragm, and pressure sudden change is buffered through the compressibility of air. The damper consumes liquid energy through a piston and a damping hole and stabilizes the liquid flow speed and pressure. The flexible connecting pipe further absorbs residual vibration, so that the pump can convey liquid more stably and accurately in the operation process, the metering precision of the metering pump is greatly improved, the industrial requirement for high-precision metering and conveying of the liquid is met, and the metering pump is particularly suitable for industries such as chemical engineering and pharmacy which have harsh requirements for dosage precision and has wide application prospects. And unstable product quality or production accidents caused by metering errors are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metering pump, concretely is a metering pump with buffer damping structure in pump export. BACKGROUND

[0002] Metering pump is a kind of pump that can accurately measure and deliver liquid, and is widely used in many industries such as chemical industry, petroleum, pharmaceutical industry and food industry. During the operation of the metering pump, due to the reciprocating motion of the pump and the pulsation of the liquid, the liquid at the pump outlet often produces large pressure fluctuations and vibrations, which not only affects the measurement accuracy of the metering pump, but also causes damage to the pipeline system, connecting components and surrounding equipment, and shortens the service life of the entire system. At present, the existing metering pump has certain limitations in the aspect of buffer damping, and it is difficult to effectively solve these problems, therefore, it is of great practical significance to develop a metering pump structure that can effectively buffer and dampen. SUMMARY

[0003] The utility model aims at providing a metering pump with buffer damping structure in pump export to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a metering pump with buffer damping structure in pump export, comprising a pump body, a buffer tank and a damper, one side of the pump body is connected with an outlet pipeline, one end of the outlet pipeline is connected with the buffer tank, the top of the buffer tank is provided with an inflation valve, the buffer tank is internally provided with a gas cavity and a liquid cavity, one end of the buffer tank is provided with the damper, one end of the damper is provided with a damping telescopic rod, one end of the damping telescopic rod is connected with a connecting rod inside the damper, one end of the connecting rod is connected with a mounting plate inside the damper, one side of the damper is provided with a connecting pipe, and one end of the connecting pipe is connected with a flexible connecting pipe.

[0005] Preferably, the liquid cavity is connected with the outlet pipeline and the damper inside at both ends respectively, and elastic diaphragms are arranged between the liquid cavities.

[0006] Preferably, the connecting rod is provided with a sealing ring at the edge, and the sealing ring is tightly attached to the edge of the inner cavity of the damper.

[0007] Preferably, the connecting pipe is fixedly connected with the flexible connecting pipe through a fastening clamp.

[0008] Preferably, the mounting plate is uniformly provided with a plurality of damping holes on the surface.

[0009] Compared with the prior art, the utility model discloses the beneficial effect is: the utility model discloses the export pipeline place of pump body is provided with the buffer tank, damper and flexible connecting pipe cooperation, effectively reduce the liquid pressure fluctuation and vibration to the interference of pump delivery process. Buffer tank is through the cooperation of elastic diaphragm and air cavity, utilize the compressibility of gas buffer pressure mutation, damper is with piston and damper hole consumption liquid energy, stabilize liquid flow rate and pressure, flexible connecting pipe further absorbs residual vibration, make the pump in the operation process can be more stable, accurately deliver liquid, greatly improve the measurement accuracy of metering pump, satisfy the industrial demand of high-precision measurement and delivery to liquid, especially applicable to the industry of harsh requirement to the accuracy of dosage such as chemical industry, pharmacy, effectively avoid the product quality instability or production accident caused by measurement error.

[0010] By setting the inflation valve on the air cavity of the buffer tank, the pressure of the air cavity can be flexibly adjusted according to different working media, flow rates, pressures and other working conditions, thereby optimizing the buffering effect of the buffer tank and enabling the metering pump to adapt to a wider working range and complex and variable working conditions. At the same time, the size, number and distribution of the damper holes in the damper can be customized according to actual needs, further enhancing the suppression ability of liquid pressure fluctuations and vibrations, enabling the entire pump system to maintain a stable operating state under different working conditions, improving the adaptability and reliability of the system, providing a strong guarantee for stable operation in industrial production processes, reducing the risk of equipment failure or performance degradation caused by changes in working conditions, and helping enterprises to improve production efficiency and stability of product quality. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of the utility model;

[0012] Figure 2 is a structural schematic view of the utility model;

[0013] Figure 3 is a structural schematic view of the utility model;

[0014] Figure 4 is a structural schematic view of the utility model.

[0015] In the drawing: 1, pump body; 2, buffer tank; 3, damper; 4, export pipeline; 5, inflation valve; 6, damping telescopic rod; 7, flexible connecting pipe; 8, elastic diaphragm; 9, air cavity; 10, liquid cavity; 11, connecting rod; 12, sealing ring; 13, connecting pipe; 14, mounting plate; 15, damper hole; 16, fastening clamp. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a metering pump with buffer damping structure in pump outlet, including pump body 1, buffer tank 2 and damper 3, pump body 1 side is connected with outlet pipeline 4, outlet pipeline 4 one end is connected with buffer tank 2, buffer tank 2 top is equipped with inflation valve 5, buffer tank 2 inside is provided with air cavity 9 and liquid cavity 10, buffer tank 2 one end is provided with damper 3, damper 3 one end is equipped with damping telescopic rod 6, damping telescopic rod 6 one end is connected with connecting rod 11 in damper 3 interior, connecting rod 11 one end is connected with mounting plate 14 in damper 3 interior, damper 3 one side is provided with connecting pipe 13, connecting pipe 13 one end is connected with flexible connecting pipe 7.

[0020] Further, liquid cavity 10 is connected with outlet pipeline 4 and damper 3 inside respectively, and elastic diaphragm 8 is arranged between liquid cavity 10.

[0021] Further, connecting rod 11 edge is provided with sealing ring 12, and sealing ring 12 is closely attached to the edge of the inner cavity of damper 3.

[0022] Further, connecting pipe 13 one end and flexible connecting pipe 7 are fixedly connected by fastening clamp 16.

[0023] Further, the mounting plate 14 is uniformly provided with a plurality of damping holes 15 on the surface.

[0024] Working principle: on the outlet pipeline 4, first provided with buffer tank 2. Buffer tank 2 is provided with elastic diaphragm 8 inside, elastic diaphragm 8 will buffer tank 2 is divided into air cavity 9 and liquid cavity 10, liquid cavity 10 is communicated with outlet pipeline 4, air cavity 9 is provided with inflation valve 5. When the liquid of pump outlet enters the liquid cavity 10 of buffer tank 2, the change of liquid pressure will make elastic diaphragm 8 elastically deform, thereby utilizing the compressibility of gas in air cavity 9 to buffer pressure fluctuation, the gas pressure in air cavity 9 can be adjusted through inflation valve 5 to adapt to different working conditions.

[0025] Along the liquid flow direction, provided with damper 3 after buffer tank 2. Damper 3 is provided with mounting plate 14 and damping hole 15 inside, sealing ring 12 is arranged between mounting plate 14 and the inner wall of damper 15, and the two ends of damper 3 are connected with outlet pipeline 4 respectively. When the liquid flows through damper 3, due to the movement of mounting plate 14 and the resistance of damping hole 15 to liquid flow, the energy of liquid can be consumed, further reducing pressure fluctuation and vibration, the size and number of damping hole 15 can be designed and adjusted according to actual needs to achieve the best damping effect.

[0026] Finally, flexible connecting pipe 9 is connected between outlet pipeline 6 and subsequent conveying pipeline, flexible connecting pipe 9 is made of rubber material, and the two ends thereof are connected with outlet pipeline 6 and subsequent conveying pipeline respectively, and fastening clamp 10 is arranged at the connecting position. Flexible connecting pipe 9 can absorb and isolate the vibration at the pump outlet to a certain extent, prevent the vibration from being transmitted to the subsequent pipeline system, at the same time, fastening clamp 10 ensures the sealing and reliability of the connection, prevents liquid leakage.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A metering pump with a buffer damping structure at the pump outlet, comprising a pump body (1), a buffer tank (2) and a damper (3), characterized in that: The pump body (1) is connected with an outlet pipe (4) on one side, the outlet pipe (4) is connected with a buffer tank (2) on one end, the buffer tank (2) is installed with an inflation valve (5) on the top, the buffer tank (2) is provided with an air cavity (9) and a liquid cavity (10) inside, the buffer tank (2) is provided with a damper (3) on one end, the damper (3) is installed with a damping telescopic rod (6) on one end, the damping telescopic rod (6) is connected with a connecting rod (11) inside the damper (3) on one end, the connecting rod (11) is connected with a mounting plate (14) inside the damper (3) on one end, the damper (3) is provided with a connecting pipe (13) on one side, and the connecting pipe (13) is connected with a flexible connecting pipe (7) on one end.

2. The metering pump with a buffer damping structure at the pump outlet according to claim 1, characterized in that: The liquid cavity (10) is connected with the outlet pipe (4) and the damper (3) inside on both ends respectively, and the elastic diaphragm (8) is arranged between the liquid cavity (10) and the liquid cavity (10).

3. The metering pump with a buffer damping structure at the pump outlet according to claim 1, characterized in that: The connecting rod (11) is provided with a sealing ring (12) on the edge, and the sealing ring (12) is closely attached to the edge of the inner cavity of the damper (3).

4. The metering pump with a buffer damping structure at the pump outlet according to claim 1, characterized in that: The connecting pipe (13) is fixedly connected with the flexible connecting pipe (7) through the fastening clamp (16) on one end.

5. The metering pump with a buffer damping structure at the pump outlet according to claim 1, characterized in that: The mounting plate (14) is evenly provided with a plurality of damping holes (15) on the surface.

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