CN218000411U

CN218000411U - Emptying valve for suspension type centrifugal fan

Info

Publication number: CN218000411U
Application number: CN202222217514.5U
Authority: CN
Inventors: 周超
Original assignee: Krupp Fluid Machinery Wuhan Co ltd
Current assignee: Krupp Fluid Machinery Wuhan Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-09
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a floated atmospheric valve for centrifugal fan, include: the valve comprises a valve sleeve, an air exhaust end, a connecting bolt cap, a metal valve core, a spring and a sealing gasket; the inner ring of the valve sleeve is provided with a convex limiting ring, the end surface of the valve sleeve close to the side of the empty discharge end is provided with a plurality of exhaust arc holes arrayed in the circumferential direction by the axis of the valve sleeve, one side of each exhaust arc hole far away from the end part of the valve sleeve is communicated with the interior of the valve sleeve by an exhaust groove and communicated with the interior of the valve sleeve, and the metal valve core is concentrically arranged in the valve sleeve; the metal valve core is provided with an inwards concave annular groove to form an air guide groove, and the diameter of the end face of the air exhaust groove on one side close to the limiting ring is smaller than that of the end face of the air exhaust groove on one side far away from the limiting ring; the metal valve core is provided with at least one group of balance holes which are not superposed with the air guide grooves, the end surface of the metal valve core close to the limiting ring is provided with a sealing gasket, and the sealing gasket is provided with hole sites for ventilation of the balance holes; the utility model has the advantages that: the reliability is high, and atmospheric valve life improves.

Description

Emptying valve for suspension type centrifugal fan

Technical Field

The utility model relates to the supporting field of fan specifically is an atmospheric valve for floated centrifugal fan.

Background

Chinese utility model patent with publication number CN212028661U discloses an air suspension centrifugal blower atmospheric valve, include: go up the barrel, go up the barrel and connect intake pipe, outlet duct respectively, go up the barrel in the internal connection of barrel, barrel intercommunication outlet duct in this, go up barrel under the lower part bolted connection of barrel, its characterized in that: and a film sheet assembly is connected between the upper barrel and the lower barrel and divides a cavity formed by the upper barrel and the lower barrel into a cavity A and a cavity B.

The reaction part among the above-mentioned comparison document is the diaphragm group, and in long-term the use, so use the diaphragm group as the blow-down valve of reaction part because the durability of diaphragm group and intensity are lower, often because the diaphragm group damages and gets into maintenance and scrap state in advance, for this reason, this application proposes to improve and provides one kind and does not rely on the diaphragm group in order to improve the life's of blow-down valve body for floated centrifugal fan.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an atmospheric valve for floated centrifugal fan to solve the problem that mentions in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a atmospheric valve for a suspension centrifugal fan comprises: the valve comprises a valve sleeve, an air exhaust end, a connecting bolt cap, a metal valve core, a spring and a sealing gasket; the valve sleeve is a cylindrical barrel, the two sides of the valve sleeve are sequentially and externally embedded and fixed with an empty exhaust end and a connecting end of a reducing empty pipe structure through welding or threads, an outward protruding limiting ring is arranged on the inner ring of the valve sleeve, the end face, close to the empty exhaust end, of the valve sleeve is provided with a plurality of exhaust arc holes circumferentially arrayed in the axis direction of the valve sleeve, one side, far away from the end portion of the valve sleeve, of each exhaust arc hole is communicated with the interior of the valve sleeve through an annular concave exhaust groove and communicated with the interior of the valve sleeve, the metal valve core is concentrically arranged in the valve sleeve, and the metal valve core is arranged on one side, close to the empty exhaust end, of the limiting ring; the side of the metal valve core close to the empty discharge end is of a cylindrical structure, the outer diameter of the side is consistent with the inner diameter of the valve sleeve, an inwards concave annular groove is arranged on the metal valve core to form an air guide groove, and the end surface diameter of the air exhaust groove on the side close to the limiting ring is smaller than the end surface diameter of the air exhaust groove on the side far away from the limiting ring; the metal valve core is provided with at least one group of balance holes which are not overlapped with the air guide grooves, the end face, close to the limiting ring, of the metal valve core is provided with a sealing gasket, and hole positions for the balance holes to ventilate are arranged on the sealing gasket.

Preferably, in order to reduce the weight of the metal valve core, enhance the flexibility of the metal valve core and reduce the manufacturing cost, the two ends of the metal valve core are hollowed, and only an inner partition plate with a circular plate structure is arranged to isolate the two sides of the metal valve core.

Preferably, in order to enhance the sealing performance, the projection of the limiting ring on the end surface of the valve sleeve covers the projection of the metal valve core on the end surface of the valve sleeve on the side close to the limiting ring.

Preferably, one end of the valve sleeve, far away from the air exhaust end and the connecting end, is provided with a convex ring, each convex ring is limited by a connecting bolt cap with an inner convex ring, a rotating pair is formed between the connecting bolt cap and the air exhaust end as well as between the connecting ends, and an elastic gasket is arranged in the connecting bolt cap.

Preferably, in order to fix the valve sleeve temporarily when the valve sleeve is installed, a hexagonal outer edge convenient to install and fix is arranged on the valve sleeve.

Preferably, the opposite surfaces of the metal valve core and the empty discharge end are provided with concentric inner grooves with the same diameter to form spring grooves, a spring is clamped and fixed between the two spring grooves, and when the spring is not stressed, the sealing gasket on the metal valve core is in contact sealing with the limiting ring.

Preferably, in order to maximize the amount of air introduced by the air discharge grooves, the width of the air guide grooves is the same as the width of the air discharge grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

through the movable design of case, compare the film motion structure among the prior art, metal material is compared in film material intensity higher, uses more durably, and the reliability is high, and the whole life of atmospheric valve improves.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of a blow-down valve for a suspension centrifugal fan.

FIG. 2 is a schematic sectional view of a blow-down valve for a suspension centrifugal fan.

FIG. 3 is a schematic diagram of an overall structure of a blow-down valve for a suspension centrifugal fan.

FIG. 4 is a schematic diagram of a sealing gasket matching structure of a blow-down valve for a suspension centrifugal fan.

FIG. 5 is a schematic diagram showing the operation exhaust principle and cross-section of a blow-down valve for a suspension centrifugal fan.

FIG. 6 is a schematic view of the operation principle and the cross section of a release valve for a suspension centrifugal fan during the reset.

In the figure: 1. a valve housing; 2. an empty discharge end; 3. a connecting end; 4. a connecting bolt cap; 5. a metal valve core; 6. a spring; 7. a gasket; 11. a limiting ring; 12. an exhaust groove; 13. an exhaust arc hole; 51. a balance hole; 52. an inner partition plate; 53. a gas guide groove; 54. a spring groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, an emptying valve for a suspension centrifugal fan includes: the valve sleeve comprises a valve sleeve 1, an air exhaust end 2, a connecting end 3, a connecting bolt cap 4, a metal valve core 5, a spring 6 and a sealing gasket 7; the valve sleeve 1 is a cylindrical barrel, an empty exhaust end 2 and a connecting end 3 of a reducing empty pipe structure are sequentially and externally embedded and fixed on two sides of the valve sleeve 1 through welding or threads, an outward protruding limiting ring 11 is arranged on the inner ring of the valve sleeve 1, a plurality of exhaust arc holes 13 arrayed in the axis circumference of the valve sleeve 1 are formed in the end face of the valve sleeve 1 close to the empty exhaust end 2 side, one side, far away from the end portion of the valve sleeve 1, of each exhaust arc hole 13 is communicated with the interior of the valve sleeve 1 through an annular concave exhaust groove 12, the metal valve core 5 is concentrically arranged in the valve sleeve 1, and the metal valve core 5 is arranged on one side, close to the empty exhaust end 2, of the limiting ring 11; one side of the metal valve core 5 close to the empty exhaust end 2 is of a cylindrical structure, the outer diameter of the metal valve core is consistent with the inner diameter of the valve sleeve 1, an inwards concave annular groove is arranged on the metal valve core 5 to form an air guide groove 53, and the end surface diameter of the exhaust groove 12 on one side close to the limiting ring 11 is smaller than that of the exhaust groove 12 on one side far away from the limiting ring 11; at least one group of balance holes 51 which are not overlapped with the air guide grooves 53 are arranged on the metal valve core 5, a sealing gasket 7 is arranged on the end face, close to the limiting ring 11, of the metal valve core 5, and hole positions for ventilating the balance holes 51 are arranged on the sealing gasket 7.

In order to reduce the weight of the metal valve core 5, enhance the flexibility and reduce the manufacturing cost, the two ends of the metal valve core 5 are hollowed, and only an inner partition plate 52 with a circular plate structure is arranged to isolate the two sides of the metal valve core 5.

In order to enhance the sealing performance, the projection of the limiting ring 11 on the end surface of the valve sleeve 1 covers the projection of the metal valve core 5 on the end surface of the valve sleeve 1 on the side close to the limiting ring 11.

One end of the valve sleeve 1 far away from the air exhaust end 2 and the connecting end 3 is provided with a convex ring which protrudes outwards, each convex ring of the convex ring is limited with a connecting bolt cap 4 with an inner convex ring, a rotating pair is formed between the connecting bolt cap 4 and the air exhaust end 2 and between the connecting end 3, and an elastic gasket is arranged in the connecting bolt cap 4.

In order to conveniently and temporarily fix the valve sleeve 1 during the installation of the valve sleeve 1, the valve sleeve 1 is provided with a hexagonal outer edge which is convenient to install and fix.

The opposite surfaces of the metal valve core 5 and the air exhaust end 2 are provided with concentric inner grooves with the same diameter to form spring grooves 54, a spring 6 is clamped and fixed between the two spring grooves 54, and when the spring 6 is not stressed, the sealing gasket 7 on the metal valve core 5 is in contact sealing with the limiting ring 11.

In order to maximize the amount of air introduced by the air discharge duct 12, the width of the air guide duct 53 is the same as the width of the air discharge duct 12.

The utility model discloses a theory of operation is:

when the exhaust-free air blower is used, the exhaust pipe is respectively connected with the connecting bolt cap 4 on the air exhaust end 2 and the connecting end 3, the electromagnetic valve is arranged between the air exhaust end and the connecting end 3 of the suspended centrifugal fan to connect the air exhaust end and the connecting end, the electromagnetic valve and the connecting end 3 are connected through the connecting bolt cap 4, the air exhaust end 2 is connected with an air exhaust pipeline through the connecting bolt cap 4, the air exhaust pipeline is connected with the atmosphere, and when the connecting bolt cap 4 is screwed and connected, an elastic gasket in the connecting bolt cap is used for elastic sealing; when the suspension centrifugal fan needs gas replacement, the electromagnetic valve is opened to communicate a passage between the centrifugal fan and the connecting end 3, the pressure intensity of the side of the metal valve core 5 close to the connecting end 3 is instantaneously equal to the atmospheric pressure intensity to form a larger pressure intensity difference, the inner partition plate 52 is pushed by the air pressure to drive the whole metal valve core 5 to move towards the air exhaust end 2 under the action of the pressure intensity difference, the spring 6 is compressed, when the spring 6 is completely compressed, the air guide groove 53 is superposed with the two sides of the air exhaust groove 12, the air guide groove 53 is directly communicated with the groove cavity of the air exhaust groove 12, because the end surface diameter of the air exhaust groove 12 close to one side of the limiting ring 11 is smaller than the end surface diameter of the air exhaust groove 12 far away from one side of the limiting ring 11, high-pressure gas enters the air guide groove 53 from the outer peripheral surface of one side of the air exhaust groove 12 close to the limiting ring 11, enters the air exhaust groove 12 through the air guide groove 53, and is exhausted into the air exhaust end 2 through the exhaust arc hole 13 connected with the air exhaust groove 12, when the air exhaust pipeline connected by the air exhaust end 2 is exhausted to the atmosphere, when the electromagnetic valve is closed, the spring 6 pushes the metal valve core 5 to reset under the action of the spring 6, when the metal valve core 5 is reset to the position shown in fig. 6, the channel between the exhaust groove 12 and the air guide groove 53 is cut off at the moment, the air exhaust loop is disconnected, the two sides of the inner partition plate 52 still have certain pressure difference which influences the subsequent use of the suspension type centrifugal fan, at the moment, because the balance holes 51 are arranged, the balance holes 51 can form gas exchange at the two sides of the inner partition plate 52, thus the balance holes 51 can gradually balance the pressure difference left at the two sides of the inner partition plate 52, after the balance is finished, the pressure at the two sides of the inner partition plate 52 is equal to the atmospheric pressure, and when the balance is finished, the spring 6 (the spring 6 in the utility model is a precision spring, and has higher requirement on the elastic reaction capability) is reset, at this moment, sealing gasket 7 seals between with balancing hole 51 and spacing collar 11, this moment the emptying valve close completely, when the unexpected outage of system, receive the effect of the external controller of solenoid valve, the solenoid valve can be opened automatically, at this moment the emptying valve can be opened thereupon, play the effect of self-protection to the fan.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. 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 referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention; moreover, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A blow-down valve for a suspension type centrifugal fan comprises: the valve comprises a valve sleeve (1), an air exhaust end (2), a connecting end (3), a connecting bolt cap (4), a metal valve core (5), a spring (6) and a sealing gasket (7); the valve sleeve (1) is a cylindrical barrel, and an air exhaust end (2) and a connecting end (3) of a reducing hollow pipe structure are sequentially and externally embedded and fixed on two sides of the valve sleeve (1) through welding or threads; the method is characterized in that: the inner ring of the valve sleeve (1) is provided with a convex limiting ring (11), the end surface of the valve sleeve (1) close to the side of the empty discharge end (2) is provided with a plurality of exhaust arc holes (13) arrayed in a circumferential manner by using the axis of the valve sleeve (1), one side of each exhaust arc hole (13) far away from the end part of the valve sleeve (1) is communicated with the interior of the valve sleeve (1) by adopting an annular concave exhaust groove (12), the metal valve core (5) is concentrically arranged in the valve sleeve (1), and the metal valve core (5) is arranged on one side of the limiting ring (11) close to the empty discharge end (2); one side of the metal valve core (5) close to the empty discharge end (2) is of a cylindrical structure, the outer diameter of the metal valve core is consistent with the inner diameter of the valve sleeve (1), an inwards concave annular groove is arranged on the metal valve core (5) to form an air guide groove (53), and the end surface diameter of the air exhaust groove (12) on one side close to the limiting ring (11) is smaller than the end surface diameter of the air exhaust groove (12) on one side far away from the limiting ring (11); at least one group of balance holes (51) which are not overlapped with the air guide grooves (53) are formed in the metal valve core (5), a sealing gasket (7) is arranged on the end face, close to the limiting ring (11), of the metal valve core (5), and hole positions for ventilation of the balance holes (51) are formed in the sealing gasket (7).

2. The emptying valve for the suspended centrifugal fan according to claim 1, characterized in that: two ends of the metal valve core (5) are hollowed, and two sides of the metal valve core (5) are isolated by an inner partition plate (52) with only one circular plate structure.

3. The emptying valve for the suspended centrifugal fan according to claim 1, characterized in that: the projection of the limiting ring (11) on the end face of the valve sleeve (1) completely covers the projection of the metal valve core (5) close to the limiting ring (11) on the end face of the valve sleeve (1).

4. The atmospheric valve for the floated centrifugal fan of claim 1, characterized in that: one end of the air exhaust end (2) and one end of the connecting end (3) far away from the valve sleeve (1) are respectively provided with a convex ring, each convex ring of each convex ring is limited with a connecting bolt cap (4) with an inner convex ring, a rotating pair is formed among the connecting bolt cap (4), the air exhaust end (2) and the connecting end (3), and an elastic gasket is arranged in the connecting bolt cap (4).

5. The emptying valve for the suspended centrifugal fan according to claim 1, characterized in that: the valve sleeve (1) is provided with a hexagonal outer edge which is fixedly arranged.

6. The emptying valve for the suspended centrifugal fan according to claim 1, characterized in that: the opposite surfaces of the metal valve core (5) and the empty discharge end (2) are provided with concentric inner grooves with the same diameter to form spring grooves (54), a spring (6) is clamped and fixed between the two spring grooves (54), and when the spring (6) is not stressed, a sealing gasket (7) on the metal valve core (5) is in contact sealing with a limiting ring (11).

7. The emptying valve for the suspended centrifugal fan according to claim 1, characterized in that: the width of the air guide groove (53) is consistent with that of the air exhaust groove (12).