CN210661412U

CN210661412U - Small flow regulating valve

Info

Publication number: CN210661412U
Application number: CN201921907328.6U
Authority: CN
Inventors: 徐传堂; 薛旻
Original assignee: China Resources Power Changshu Co Ltd
Current assignee: China Resources Power Changshu Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-02
Anticipated expiration: 2029-11-07

Abstract

The utility model provides a small flow control valve, valve body, disk seat, valve rod, case, covering core are installed in the valve body, the case is cylindrical structure, the bottom of case is the inclined plane groove type, the covering core is installed on the disk seat, the covering core is in the periphery of case, the covering core with clearance fit between the case, the bounding wall is installed to case upper and lower part, the bounding wall with the lateral wall bottom of case links to each other, is equipped with circular passageway in the case center, simultaneously back taper chamber groove has been seted up to the centre of case, back taper chamber groove with circular passageway intercommunication, the opening with back taper chamber groove links to each other, in valve rod top-down stretched into the circular passageway of case, the pilot valve was installed to the lower part of valve rod, the pilot valve was arranged in back taper chamber inslot and with the terminal surface matches under the back taper chamber groove. The utility model discloses can effectively the sealed face of valve body, effectively reduce the valve and reveal and the phenomenon that the valve broke down.

Description

Small flow regulating valve

Technical Field

The utility model relates to a fluid throttle field especially relates to a small flow control valve.

Background

The small flow regulating valve is a valve commonly used in a power plant, and the small flow regulating valve has a good flow regulating function at a small flow, and the performance of the valve has the advantage of reliability at a small range of flow.

Then, in the use of reality, when discovering the valve and carrying out little aperture and adjust working medium flow, the sealed position of valve suffers the impact of foreign matter or water easily, suffers destruction very easily, leaks the phenomenon in taking place easily, leads to the valve to break down, makes the life of valve reduce. Thus, the failure of the valve can be caused, and the using effect is greatly reduced.

SUMMERY OF THE UTILITY MODEL

For solving the problem mentioned in the above-mentioned background art, the utility model provides a small flow control valve, include: the valve comprises a valve body, a valve seat, a valve rod, a valve core and a core-spun core, wherein the valve seat, the valve core and the core-spun core are arranged in the valve body, the valve core is of a cylindrical structure, the bottom of the valve core is of an inclined plane groove type, the core-spun core is arranged on the valve seat and is arranged at the periphery of the valve core, the core-spun core is in clearance fit with the valve core, it is characterized in that the upper part and the lower part of the valve core are provided with coamings which are connected with the bottom of the side wall of the valve core, the valve core (the center is internally provided with a circular channel, meanwhile, the middle of the valve core is provided with an inverted conical cavity groove which is communicated with the circular channel, the side edge of the inverted cone-shaped cavity groove is provided with an opening, the valve rod extends into the circular channel of the valve core from top to bottom, and the lower part of the valve rod is provided with a pilot valve which is arranged in the inverted cone cavity groove and is matched with the lower end surface of the inverted cone cavity groove.

Further, the method also comprises the following steps: valve cap, bolt, the valve cap compresses tightly through the bolt and fixes on the valve body, the bottom of valve cap is the ring post, the bottom of ring post with the top of covering core compresses tightly the connection.

Furthermore, the bottom of the coaming is slightly lower than the bottom surface of the valve core, and the coaming and the valve core are integrally formed.

Furthermore, a water outlet channel is arranged at the lower part of the valve seat, the top of the valve seat is matched with the bottom inclined plane of the valve core, a circular groove is further formed in the upper surface of the valve seat, and when the valve core is pressed on the valve seat, the enclosing plate falls into the circular groove.

Furthermore, the water outlet channel of the valve seat is communicated with the water outlet pipe, and the side wall of the core-spun core is communicated with the water inlet pipe.

Further, the round platform structure of pilot valve for invering, the back taper chamber inslot can be put into through the opening of back taper side to the pilot valve, the side of pilot valve is equipped with circular passageway, pilot valve and valve rod integrated processing, the bottom of valve rod is equipped with the screw thread, the valve rod passes through threaded connection on the pilot valve.

Furthermore, the profile of the core-spun core is a circular column, the core-spun core is of a hollow structure, at least one circular pore plate is installed in the core-spun core, and dense circular holes are formed in the peripheral side wall of the core-spun core.

Compared with the prior art, the utility model provides a small flow control valve has following beneficial effect:

1. the utility model discloses protecting the sealing contact slope of case at case bottom installation bounding wall, effectively preventing sealed inclined plane and being strikeed and damage by fluid and impurity, when rivers pass through from the case bottom, the bounding wall bears the impact of rivers in the very first time to alleviate the direct impact of rivers to the sealed face of case bottom.

2. The utility model discloses at the mid-mounting pilot valve of case, the pressure of effective balanced valve both sides makes the valve work up easily and opens.

3. The utility model discloses install the pilot valve at the case middle part, reduced the impaired probability of revealing of pilot valve front cover.

Drawings

Fig. 1 is a schematic view of a small flow control valve.

Fig. 2 is a schematic structural diagram of a small flow valve before improvement.

Fig. 3 is a schematic view of a small flow control valve enclosure.

Fig. 4 is a schematic diagram of a valve core structure without a coaming before improvement.

Wherein: 1-a valve body; 2-water inlet pipe; 3-water outlet pipe; 4-valve seat; 5-valve stem; 6-valve core; 7-core-spun; 8-a pilot valve; 9-circular channel; 10-valve cap; 11-a screw; 12-boarding.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person having ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

The present invention will be described in detail with reference to the drawings, and in order to describe the embodiments of the present invention in detail, the cross-sectional view showing the structure of the device will not be enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Meanwhile, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner, outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present application are to be understood broadly, unless otherwise explicitly stated or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in the figure, the utility model provides a small flow control valve, include: the valve comprises a valve body 1, a valve seat 4, a valve rod 5, a valve core 6 and a core-spun 7, wherein the valve seat 4, the valve core 6 and the core-spun 7 are installed in the valve body 1, the valve core 6 is of a cylindrical structure, the bottom of the valve core 6 is of an inclined plane groove shape, the core-spun 7 is installed on the valve seat 4, the core-spun 7 is arranged on the periphery of the valve core 6, the core-spun 7 is in clearance fit with the valve core 6, surrounding plates are installed on the upper portion and the lower portion of the valve core 6 and are connected with the bottom of the side wall of the valve core 6, a circular channel 9 is arranged in the center of the valve core 6, a reverse conical cavity groove is formed in the middle of the valve core 6 and is communicated with the circular channel 9, an opening is formed in the side edge of the reverse conical cavity groove, the valve rod 5 extends into the circular channel 9 of the valve core 6 from top to bottom, a pilot valve 8 is installed on the lower portion of, further comprising: valve cap 10, bolt 11, valve cap 10 compresses tightly through bolt 11 to be fixed on the valve body 1, the bottom of valve cap 10 is the ring post, the bottom of ring post with the top of covering core 7 compresses tightly to be connected, the exhalant canal of valve seat 4 communicates with each other with outlet pipe 3, the lateral wall of covering core 7 communicates with each other with inlet tube 2.

Example 2

As shown in the drawings, a second embodiment of the present invention is different from the first embodiment in that: the bottom of the annular baffle is slightly lower than the bottom surface of the valve core 6, and the annular baffle and the valve core 6 are integrally formed.

Compared with the embodiment 1, the height of the annular baffle and the connection mode of the baffle and the valve core 6 are further specified, the bottom of the annular baffle is slightly lower than the bottom surface of the valve core 6, so that the sealing contact slope of the bottom of the valve core 6 is further protected, and meanwhile, the annular baffle can be effectively prevented from being inclined in the installation process in an integrated forming mode.

The rest of the structure is the same as in example 1.

Example 3

As shown in the drawings, the third embodiment of the present invention is different from the second embodiment in that: the lower part of the valve seat 4 is provided with a water outlet channel, the top of the valve seat 4 is matched with the bottom inclined plane of the valve core 6, the upper surface of the valve seat 4 is also provided with a circular groove, when the valve core 6 presses the valve seat 4, the coaming 12 just falls in the circular groove, the pilot valve 8 is of an inverted circular truncated cone structure, the pilot valve 8 can be placed in a reverse cone cavity groove through an opening of a reverse cone side edge, the side surface of the pilot valve 8 is provided with a circular channel, the pilot valve 8 and the valve rod are integrally processed, the bottom of the valve rod 5 is provided with threads, and the valve rod 5 is connected to the pilot valve 8 through threads. .

The back taper chamber inslot can be put into through the opening in back taper chamber groove to pilot valve 8, and the side of pilot valve 8 can insert the iron rod and fix, fixes pilot valve 8 when making things convenient for the valve rod switching, and the convenient later stage maintenance of detachable pilot valve 8 structure and change.

The rest of the structure is the same as in example 2.

Example 4

As shown in the drawings, a fourth embodiment of the present invention is different from the third embodiment in that: the profile of core-spun 7 is the ring post, core-spun 7 is hollow structure, install at least one ring orifice plate in the core-spun 7, seted up intensive round hole on the lateral wall around the core-spun 7.

The structure of the core 7 is limited, the core 7 not only can allow fluid to pass through, but also can reduce the pressure of the fluid due to the porous structure, so that the impact of the fluid on the sealing surface is further reduced, and meanwhile, the noise can be effectively reduced due to the porous structure.

The rest of the structure is the same as in example 3.

Example 5

As shown in the drawings, a fourth embodiment of the present invention is different from the fourth embodiment in that: the core-spun 7 is made into a circular cylindrical structure by hollow metal mesh packing.

The metal mesh packing can effectively reduce the pressure of the fluid and slow down the flow speed of the fluid.

The rest of the structure is the same as that of embodiment 4.

The working principle is as follows:

when the valve core 6 presses on the surface of the valve seat 4 and the pilot valve 8 presses on the lower surface of the inverted conical cavity, the whole valve is in a closed state.

Valve rod 5 upward movement when the valve is opened drives the pilot valve and upwards opens, and outlet pipe 3 communicates through circular passageway 9 with inlet tube 2, and the atmospheric pressure at 6 both ends of case is balanced, and valve rod 5 continues upward movement can be easily opened case 6, and the fluid passes through inlet tube 2 access device, flows in outlet pipe 3 from the case bottom after 7 processes of making an uproar that reduce the pressure through the covering core.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A small flow regulator valve comprising: the valve comprises a valve body (1), a valve seat (4), a valve rod (5), a valve core (6) and a core-spun core (7), wherein the valve seat (4), the valve core (6) and the core-spun core (7) are installed in the valve body (1), the valve core (6) is of a cylindrical structure, the bottom of the valve core (6) is of a bevel groove shape, the core-spun core (7) is installed on the valve seat (4), the core-spun core (7) is arranged on the periphery of the valve core (6), the core-spun core (7) is in clearance fit with the valve core (6), the valve core-spun core (6) is characterized in that the upper part and the lower part of the valve core (6) are provided with surrounding plates, the surrounding plates are connected with the bottom of the side wall of the valve core (6), a circular channel (9) is arranged in the center of the valve core (6), a reverse conical cavity groove is formed in the middle of the valve core (6) and, the valve rod (5) extends into the circular channel (9) of the valve core (6) from top to bottom, the lower part of the valve rod (5) is provided with a pilot valve (8), and the pilot valve (8) is arranged in the inverted cone cavity groove and matched with the lower end face of the inverted cone cavity groove.

2. The small flow regulator valve according to claim 1, further comprising: valve cap (10), bolt (11), valve cap (10) compress tightly through bolt (11) and fix on valve body (1), the bottom of valve cap (10) is the ring post, the bottom of ring post with the top of covering core (7) compresses tightly the connection.

3. A small flow regulating valve according to claim 2, characterized in that the bottom of the collar (12) is slightly lower than the bottom surface of the valve core (6), and the collar (12) is formed integrally with the valve core (6).

4. A small flow regulating valve according to claim 3, characterized in that the lower part of the valve seat (4) is provided with a water outlet channel, the top of the valve seat (4) is matched with the bottom inclined plane of the valve core (6), the upper surface of the valve seat (4) is also provided with a circular groove, and when the valve core (6) is pressed on the valve seat (4), the enclosing plate (12) just falls in the circular groove.

5. A small flow regulating valve according to claim 4, characterized in that the outlet channel of the valve seat (4) communicates with the outlet pipe (3) and the side wall of the core (7) communicates with the inlet pipe (2).

6. The small-flow regulating valve according to claim 5, characterized in that the pilot valve (8) is an inverted circular truncated cone structure, the pilot valve (8) can be placed in the inverted cone cavity groove through the opening of the inverted cone side, the side surface of the pilot valve (8) is provided with a circular channel, the pilot valve (8) and the valve rod are integrally machined, the bottom of the valve rod (5) is provided with a thread, and the valve rod (5) is connected to the pilot valve (8) through the thread.

7. The small flow regulating valve according to claim 6, characterized in that the profile of the core (7) is a circular cylinder, the core (7) is a hollow structure, at least one circular hole plate is installed in the core (7), and dense circular holes are opened on the peripheral side wall of the core (7).