CN213270175U - Flow stabilizer for volumetric fluid machines - Google Patents

Abstract

The utility model discloses a current stabilizer for volume type fluidic device, the novel nipple rectifier comprises a cylindrical shel, the guide post, floating piston and a plurality of dish spring, inside cavity of barrel and both ends opening, the coaxial lid that passes through that is equipped with of its one end opening part, the coaxial flange that is equipped with of its other end opening part, floating piston is cylindrical, its coaxial setting is in the barrel, and the laminating of the inner wall slidable of its lateral wall and barrel, the coaxial setting of guide post is in the barrel, its one end and floating piston are connected, its other end is worn out the through-hole of passing through the lid and is connected with passing through the lid, a plurality of dish springs are established side by side and are established on the guide post and all can follow the endwise slip of guide post, the dish spring that is located both ends is contradicted. The utility model provides a current stabilizer for volumetric fluid equipment to solve prior art's pulse stabilizing device life-span low, the threshold value scope of stabilizing the flow narrow, use and maintain inconvenient and the poor problem of reliability.

Description

Flow stabilizer for volumetric fluid machines

Technical Field

The utility model relates to a fluid transport field. More particularly, the present invention relates to flow stabilizers for positive displacement fluid devices.

Background

In the technical field of fluid conveying, in devices which utilize the periodic change of the volume of a working chamber to generate pressure difference and make fluid flow so as to convey fluid, such as piston type air compressors, reciprocating slurry pumps, diaphragm pumps, filling industrial pumps, deflection pumps and the like, the volume change inevitably causes the flow change of the fluid in the working process, the pulsation generated by the flow change inevitably generates pulsation impact on pipelines and related equipment facilities, the pulsation impact not only aggravates the impact abrasion of the pipelines, but also can cause the pipelines and accessories to vibrate, further, connecting accessories of the pipelines are loosened to cause leakage and fracture, and meanwhile, the service life of the fluid conveying device is reduced due to the reaction force generated by the pulsation.

In the technical field of hydraulic transmission, most high-pressure oil pumps are reciprocating plunger pumps, and the defects also exist in the operation process of the high-pressure oil pumps; due to the requirement for controlling the action of the actuating mechanism, corresponding hydraulic impact can be generated by opening, closing and switching of the hydraulic control valve, and the reliability and stability of the pump valve and the pipeline are seriously affected by the impact.

In the prior art, a pulse stabilizing device with a bag type or diaphragm type structure is mostly adopted for fluid pulsation generated in various fluid conveying processes, and the pulse stabilization is realized by adopting a principle that gas with certain pressure is used as damping to absorb, store and release fluid pulsation kinetic energy. In practical engineering applications, the pulse stabilizing device of the principle and the structure presents the following problems: because the built-in inflatable capsule or diaphragm requires high pressure bearing capacity, the fatigue life is short due to frequent expansion and contraction, the replacement is frequent, the replacement difficulty is large, and the manufacturing cost is high; in addition, the compression ratio of the gas is large, so that the threshold range of the device for stabilizing the flow is narrow, and the pressure range of the fluid capable of being stabilized is also narrow; the third disadvantage is that this type of device must be equipped with an inflation device, which often supplements the air and is inconvenient to use and maintain.

In summary, the prior art capsule or diaphragm type pulse suppression device using gas as damping is still difficult to adapt to the application in the field of fluid delivery technology due to its inherent defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a current stabilizer for positive displacement fluid equipment to solve prior art's pulse stabilizing device life-span low, the threshold value scope of stabilizing the flow is narrow, use and maintain inconvenient and the poor problem of reliability.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a current stabilizer for volume type fluidic device, includes barrel, guide post, floating piston and a plurality of dish spring, inside cavity and both ends opening of barrel, its one end opening part is coaxial to be equipped with through the lid, and its other end opening part is coaxial to be equipped with flange, floating piston is cylindrical, and its coaxial setting is in the barrel, and its lateral wall with the laminating of the inner wall slidable of barrel, the guide post is coaxial to be set up in the barrel, its one end with floating piston connects, and its other end is worn out through the through-hole of lid and with through the lid is connected, and is a plurality of the dish spring overlaps side by side and is established on the guide post and all can follow the endwise slip of guide post is located both ends the dish spring respectively with floating piston with through the lid is contradicted.

Preferably, in the flow stabilizer for a volumetric fluid device, the flow stabilizer further includes a sleeve disposed in the cylinder, the sleeve is disposed on the guide post and can slide along the axial direction of the guide post, and two ends of the sleeve respectively abut against the transparent cover and the disc spring close thereto.

Preferably, in the flow stabilizer for the volumetric fluid equipment, a first groove corresponding to one end of the guide post is formed at one end, close to the transparent cover, of the floating piston, and one end of the guide post is embedded in the first groove.

Preferably, in the flow stabilizer for a volumetric fluid device, a second groove corresponding to the disc spring is formed at one end, close to the transparent cover, of the floating piston, the first groove is formed in the bottom wall of the second groove, and the disc spring, close to the floating piston, extends into the second groove.

Preferably, in the flow stabilizer for volumetric fluid equipment, a first annular groove is coaxially arranged on the side wall of the floating piston, a sealing ring is coaxially arranged in the first annular groove, and the sealing ring is slidably attached to the inner wall of the cylinder.

Preferably, in the flow stabilizer for volumetric fluid equipment, a second annular groove is coaxially arranged on the side wall of the floating piston, the second annular groove is located on one side of the first annular groove close to the connecting flange, a guide ring is coaxially arranged in the second annular groove, and the guide ring is slidably attached to the inner wall of the cylinder.

The utility model discloses a current stabilizer for volume type fluid equipment adopts the dish spring to replace traditional technology with capsule or diaphragm isolated gas as the damping as damping element, has simple structure, low in manufacturing cost, energy storage capacity big, adapt to characteristics such as fluid flow and pressure threshold value scope width, reliability stability height and easy maintenance.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a flow stabilizer for a volumetric fluid apparatus according to the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

FIG. 1 is a schematic view of a flow stabilizer for a volumetric fluid device according to an embodiment of the present invention, which comprises a cylindrical body 1, a guide post 2, a sleeve 7, a floating piston 3 and a plurality of disc springs 4, wherein the cylindrical body 1 is hollow and has openings at both ends, a transparent cover 5 is coaxially disposed at an opening at one end of the cylindrical body, a connecting flange 6 is coaxially disposed at an opening at the other end of the cylindrical body, the floating piston 3 is cylindrical and is coaxially disposed in the cylindrical body 1, a side wall of the floating piston is slidably attached to an inner wall of the cylindrical body 1, the guide post 2 is coaxially disposed in the cylindrical body 1, one end of the floating piston 3 is connected to the other end of the floating piston, the other end of the floating piston penetrates through a through hole of the transparent cover 5 and is connected to the transparent cover 5, the sleeve 7 is sleeved on the guide post 2 and can slide along an axial direction of the guide post 2, one end of the sleeve is abutted to the transparent cover 5, the plurality of the disc springs 4 are, the disc springs 4 at both ends are respectively abutted against the floating piston 3 and the other end of the sleeve 7.

In the embodiment, the flow stabilizer for the volumetric fluid equipment adopts the disc spring 4 as a damping element to replace the traditional technology that the capsule or diaphragm isolated gas is used as the damping, and has the characteristics of simple structure, low manufacturing cost, large energy storage capacity, wide range of adaptive fluid flow and pressure threshold, high reliability and stability, easy maintenance and the like; specifically, about the guide bar of setting in the barrel along 1 axis of barrel provides the direction for combination dish spring 4, the during operation can make dish spring 4 keep axial displacement and can not take place radial offset, the end that stretches out of guide bar can regard as pulse amplitude measuring device, can make through the quantity of increase and decrease combination dish spring 4 and the length that changes sleeve 7 according to the flow and the pressure of fluid equipment output the utility model discloses reach best state of stabilizing.

Preferably, as another embodiment of the present invention, the floating piston 3 is close to one end of the transparent cover 5 and is provided with a first groove 8 corresponding to one end of the guide post 2, and one end of the guide post 2 is embedded in the first groove 8.

In this embodiment, by providing the first groove 8 and embedding one end of the guide post 2 in the first groove 8, the guide post 2 and the floating piston 3 are stably connected, so that the floating piston 3 moves more stably in the cylinder 1.

Preferably, as another embodiment of the present invention, one end of the floating piston 3 close to the transparent cover 5 is provided with a second groove 9 corresponding to the disc spring 4, the first groove 8 is disposed on the bottom wall of the second groove 9, and the disc spring 4 close to the floating piston 3 extends into the second groove 9.

In this embodiment, one end of the floating piston 3 close to the transparent cover 5 is provided with a second groove 9 corresponding to the disc spring 4, and one or more disc springs 4 are arranged in the second groove 9 to limit the disc spring 4 to a certain extent.

Preferably, as another embodiment of the present invention, a first annular groove is coaxially disposed on the sidewall of the floating piston 3, a sealing ring 10 is coaxially disposed in the first annular groove, and the sealing ring 10 is slidably attached to the inner wall of the cylinder 1; the coaxial second annular groove that is equipped with on the lateral wall of floating piston 3, the second annular groove is located first annular groove is close to flange 6's one side, coaxial guide ring 11 that is equipped with in the second annular groove, guide ring 11 with the laminating of the inner wall slidable of barrel 1.

In this embodiment, the contact seal formed between the sealing ring 10 and the inner wall of the cylinder 1 can effectively isolate the delivered fluid without leakage; the surface contact formed between the guide ring 11 and the inner wall of the cylinder 1 can guide the movement of the floating piston 3 without generating deflection and scratching the inner wall of the cylinder 1 to cause sealing failure.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (6)

1. A flow stabilizer for volumetric fluid equipment is characterized by comprising a cylinder body (1), a guide post (2), a floating piston (3) and a plurality of disc springs (4), wherein the cylinder body (1) is hollow and is provided with openings at two ends, a transparent cover (5) is coaxially arranged at one end opening, a connecting flange (6) is coaxially arranged at the other end opening, the floating piston (3) is cylindrical and is coaxially arranged in the cylinder body (1), the side wall of the floating piston is slidably attached to the inner wall of the cylinder body (1), the guide post (2) is coaxially arranged in the cylinder body (1), one end of the guide post is connected with the floating piston (3), the other end of the guide post penetrates through a through hole of the transparent cover (5) and is connected with the transparent cover (5), the disc springs (4) are parallelly sleeved on the guide post (2) and can slide along the axial direction of the guide post (2), the disc springs (4) positioned at the two ends are respectively abutted against the floating piston (3) and the transparent cover (5).

2. A flow stabilizer for volumetric fluid machines according to claim 1, characterized in that it further comprises a sleeve (7) disposed inside said cylindrical body (1), said sleeve (7) being fitted over said guide post (2) and being slidable along the axial direction of said guide post (2), the two ends of said sleeve (7) being in interference with said transparent cover (5) and said disc spring (4) adjacent thereto, respectively.

3. A flow stabilizer for volumetric fluid machines according to claim 1 or 2, characterized in that the end of the floating piston (3) close to the transparent cover (5) is provided with a first recess (8) corresponding to the end of the guiding post (2), the end of the guiding post (2) being embedded in the first recess (8).

4. A flow stabilizer for a volumetric fluid device according to claim 3, characterized in that the end of the floating piston (3) close to the transparent cover (5) is provided with a second recess (9) corresponding to the disc spring (4), the first recess (8) being provided on the bottom wall of the second recess (9), the disc spring (4) close to the floating piston (3) protruding into the second recess (9).

5. A flow stabilizer for a volumetric fluid device according to claim 3, characterized in that a first annular groove is coaxially provided on the side wall of the floating piston (3), a sealing ring (10) is coaxially provided in the first annular groove, the sealing ring (10) is slidably attached to the inner wall of the cylinder (1).

6. A flow stabilizer for volumetric fluid devices according to claim 5, characterized in that the floating piston (3) has a second annular groove coaxially provided on its side wall, on the side of the first annular groove close to the connection flange (6), and a guide ring (11) coaxially provided in the second annular groove, the guide ring (11) being slidably engaged with the inner wall of the cylinder (1).

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