Self-adaptive regulating valve

Abstract

The utility model discloses a self-adaptive regulating valve which comprises a valve body, the bottom of the valve body is connected with a valve seat, the top of the valve body is connected with a valve cover, an air inlet cavity and an air outlet cavity are arranged in the valve body and communicated through a valve channel, a first air cavity is arranged in the valve seat and communicated with the air inlet cavity, and a second air cavity is arranged in the valve cover and communicated with the first air cavity. A compressed air inlet and a compressed air outlet are formed in the valve body, a gas conveying connector is formed in the valve deck, a valve needle is vertically arranged in the valve channel, the top end of the valve needle penetrates through the valve body and extends into the second air cavity, and the top of the valve deck is in threaded connection with an adjusting screw rod. An adjusting nut is in threaded fit with the adjusting screw rod, the bottom end of the adjusting screw rod extends into the second air cavity, a blind hole is formed in the bottom end of the adjusting screw rod, an ejector pin is movably arranged in the blind hole, and a membrane is arranged between the ejector pin and the valve needle. The self-adaptive regulating valve can keep air pressure balance under the condition that the conveying air pressure of a system fluctuates, and waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of governing valve, especially relates to a self -adaptation governing valve. BACKGROUND

[0002] The air seal is a reliable sealing mode commonly used in the pneumatic conveying system, and its principle is to isolate and clean solid materials by using the pressure higher than the pneumatic conveying system, so as to avoid the wear of the transmission shaft and the leakage of the materials. Influenced by various factors (such as the amount of solid materials, the material smoothness, etc.), the pressure in the pneumatic conveying system is not constant. Therefore, in actual work, the sealing gas source pressure is adjusted to 2-3 times of the system conveying pressure, which causes great waste.

[0003] Therefore, how to solve the defects existing in the prior art has become the direction of efforts of the technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a self -adaptation governing valve, which can completely solve the shortcomings of the prior art.

[0005] The utility model discloses a self -adaptation governing valve, which can completely solve the shortcomings of the prior art.

[0006] A self -adaptation governing valve, including valve body, the bottom of valve body is detachable connection valve seat, the top is detachable connection valve cover, be equipped with the air inlet cavity and the air outlet cavity in the valve body, the air inlet cavity is passed through the valve channel and is communicated with the air outlet cavity, be equipped with the first air cavity in the valve seat, the first air cavity is communicated with the air inlet cavity, be equipped with the second air cavity in the valve cover, the second air cavity is communicated with the air outlet cavity through the air hole that sets up on the valve body, set up the compressed air inlet and the air inlet cavity communication, set up the compressed air outlet and the air outlet cavity communication, set up the conveying gas interface and the second air cavity communication on the valve cover, the valve needle is vertically set in the valve channel, and the bottom end of the valve needle is equipped with the supporting spring between the bottom of the valve seat, the top end of the valve needle is inserted into the second air cavity through the valve body, the adjusting screw is screwed on the top of the valve cover, the adjusting screw is screwed on the adjusting nut, and the bottom end of the adjusting screw is inserted into the second air cavity, a blind hole is arranged at the bottom end of the adjusting screw, a center pin is movably arranged in the blind hole, and the adjusting spring is arranged between the top end of the center pin and the top surface in the blind hole.

[0007] Further, the valve needle is provided with a flange, and the flange top surface is matched with the inlet end of the valve channel bottom to seal the inlet end.

[0008] Further, the flange surface is provided with a rubber sleeve.

[0009] Further, the bottom end of the valve needle is provided with a mounting blind hole one, and the bottom of the valve seat is provided with a mounting blind hole two, and the supporting spring is mounted in the mounting blind hole one and the mounting blind hole two.

[0010] Further, the diaphragm is located at the top end of the valve body and in the second air cavity.

[0011] Further, the top end of the valve body is provided with an annular groove, and the diaphragm edge is provided with a corresponding annular boss which is fitted in the annular groove.

[0012] Further, a valve seat sealing ring is arranged between the valve body and the valve seat.

[0013] Further, a valve needle sealing ring is arranged between the valve needle and the valve body.

[0014] Compared with the prior art, the self-adaptive regulating valve can maintain air pressure balance and reduce waste under the condition of system air pressure fluctuation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 is an exploded view of the utility model;

[0017] Figure 3 is a sectional view of the utility model;

[0018] Figure 4 is Figure 3 the local enlarged view of A in the figure;

[0019] Figure 5 is a structure schematic diagram of the flange and the valve channel inlet end opening state, and the arrow in the figure is the air flow direction;

[0020] Figure 6 is Figure 5 the local enlarged view of B in the figure, and the arrow in the figure is the air flow direction;

[0021] Figure 7 is a structure schematic diagram of the flange closing the valve channel inlet end, and the arrow in the figure is the air flow direction. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood, and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0023] As Figures 1 to 7As shown, an adaptive regulating valve comprises a valve body 1, a valve seat 4 detachably connected to the bottom of the valve body 1 by screws, and a valve cover 6 detachably connected to the top of the valve body 1. The valve body 1 is internally provided with an air inlet cavity 101 and an air outlet cavity 102, the air inlet cavity 101 is communicated with the air outlet cavity 102 through a valve channel 103, the valve seat 4 is internally provided with a first air cavity 401 communicated with the air inlet cavity 101, the valve cover 6 is internally provided with a second air cavity 601 communicated with the air outlet cavity 102 through an air hole 104 arranged on the valve body 1, a compressed air inlet 13 is arranged on the valve body 1 and communicated with the air inlet cavity 101, a compressed air outlet 14 is arranged on the valve body 1 and communicated with the air outlet cavity 102, a gas delivery interface 15 is arranged on the valve cover 6 and communicated with the second air cavity 601, a valve needle 2 is vertically arranged in the valve channel 103, a supporting spring 3 is arranged between the bottom end of the valve needle 2 and the inner bottom of the valve seat 4, the top end of the valve needle 2 extends into the second air cavity 601 through the valve body 1, an adjusting screw 7 is threadedly connected to the top of the valve cover 6, an adjusting nut 8 is threadedly fitted on the adjusting screw 7, the bottom end of the adjusting screw 7 extends into the second air cavity 601, a blind hole is arranged at the bottom end of the adjusting screw 7, a plunger 9 is movably arranged in the blind hole, an adjusting spring 10 is arranged between the top end of the plunger 9 and the inner top of the blind hole, and a diaphragm 5 is arranged between the plunger 9 and the valve needle 2.

[0024] In this embodiment, a flange 201 is arranged on the valve needle 2, and the top surface of the flange 201 is matched with the inlet end of the valve channel 103 to seal the inlet end. In order to ensure the sealing effect and protect the flange 201, a rubber sleeve is sleeved on the surface of the flange 201.

[0025] In order to facilitate limiting, a mounting blind hole one is arranged at the bottom end of the valve needle 2, a mounting blind hole two is correspondingly arranged at the inner bottom of the valve seat 4, and the supporting spring 3 is mounted in the mounting blind hole one and the mounting blind hole two.

[0026] In this embodiment, the diaphragm 5 is located at the top end of the valve body 1 and in the second air cavity 601. The top end of the valve body 1 is provided with an annular groove 16, the edge of the diaphragm 5 is provided with a corresponding annular boss 17, and the annular boss 17 is matched in the annular groove 16. The top of the diaphragm 5 is tightly pressed by the bottom end of the valve cover 6.

[0027] In order to ensure the sealing effect, a valve seat sealing ring 11 is arranged between the valve body 1 and the valve seat 4. A plunger sealing ring 12 is arranged between the valve needle 2 and the valve body 1.

[0028] In operation, the gas source in the pneumatic conveying system is connected to the conveying gas interface 15 to enter the second air cavity 601, to the upper end of the diaphragm 5, the compressed gas is connected to the compressed air inlet 13 to enter the air inlet cavity 101, and then enters the air outlet cavity 102 through the valve channel 103, and then enters the lower end of the diaphragm 5 through the air hole 104. The upper and lower ends of the diaphragm 5 control the up-and-down action of the valve needle 2, so as to adjust the distance between the flange 201 and the inlet end of the valve channel 103. When the set pressure difference is reached, the flange 201 closes the inlet end of the valve channel 103 or the distance between the flange 201 and the inlet end of the valve channel 103 is reduced, thereby reducing the flow. The size of the pressure difference can be adjusted by adjusting the compression of the adjusting spring 10 through the adjusting screw 7.

[0029] The self-adaptive regulating valve of the utility model can maintain air pressure balance and reduce waste under the condition of air pressure fluctuation of system conveying. The structure is simple, compact and fast in response, and the operator does not need any adjusting work, and the pressure adaptive range is wide.

[0030] Similarly, it is to be understood that, in the interest of not obscuring the present disclosure, individual aspects of the various embodiments are sometimes described in terms of components that are common to an individual embodiment and other descriptions that are common to a plurality of embodiments or aspects. Accordingly, no inference should be drawn that a described feature is required of any of the described embodiments. To the contrary, the described features are exemplary only and not exhaustive.

[0031] Those skilled in the art will appreciate that the modules in the devices of the embodiments can be adapted and placed in one or more devices other than the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and furthermore can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, all combinations of all features disclosed in the specification (including the accompanying claims, abstract and drawings) and all processes or units of any methods or devices disclosed thus can be used. Unless explicitly stated otherwise, each feature disclosed in the specification (including the accompanying claims, abstract and drawings) can be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0032] Furthermore, those skilled in the art will recognize that, while certain embodiments described herein include certain features, not all embodiments need necessarily include those certain features. To the extent various embodiments include the same or similar features, those features are not necessarily the same in every embodiment. Also, while the description herein includes a number of steps, those steps need not necessarily be performed in the order described. Further, those skilled in the art will recognize or be able to ascertain from the disclosure, that embodiments of the present application include equivalents to the features described herein. It is the intention that the scope of the present application be defined by the claims appended hereto, rather than by the specific disclosure herein. Therefore, the specific disclosure herein to be read as illustrative of embodiments of the present application and not in a limiting sense.

[0033] It is to be understood that the embodiments described above are merely illustrative of the present application and should not be considered limiting the scope of the application as there can be numerous other arrangements that are equivalent in terms of the functionality of the present application that have not been depicted. Hence, individual features of the embodiments should be considered in a generic sense and the combination of features of the embodiments should be considered as being within the scope of the present application. Finally, it should be noted that the word "comprising" does not exclude the presence of elements or steps other than those listed and the word "a" or "an" preceding the

[0034] The specific embodiments described hereinabove have been shown by way of example, and any modifications of more or less doing equivalent things which are within the scope of the present application are contemplated as being within the scope of the present application as defined by the appended claims.

Claims

1. An adaptive control valve comprising a valve body, the bottom of which is detachably connected to a valve seat, and the top of which is detachably connected to a valve cover, characterized in that: The valve body is provided with an air inlet cavity and an air outlet cavity, the air inlet cavity and the air outlet cavity are communicated through a valve channel, the valve seat is provided with a first air cavity, the first air cavity is communicated with the air inlet cavity, the valve cover is provided with a second air cavity, the second air cavity is communicated with the air outlet cavity through an air hole arranged on the valve body, a compressed air inlet is arranged on the valve body and communicated with the air inlet cavity, a compressed air outlet is arranged on the valve body and communicated with the air outlet cavity, a gas delivery interface is arranged on the valve cover and communicated with the second air cavity, a valve needle is vertically arranged in the valve channel, a supporting spring is arranged between the bottom end of the valve needle and the bottom of the valve seat, the top end of the valve needle extends into the second air cavity through the valve body, an adjusting screw is threadedly connected to the top of the valve cover, an adjusting nut is threadedly connected to the adjusting screw, the bottom end of the adjusting screw extends into the second air cavity, a blind hole is arranged at the bottom end of the adjusting screw, a thimble is movably arranged in the blind hole, an adjusting spring is arranged between the top end of the thimble and the top surface of the blind hole, and a diaphragm is arranged between the thimble and the valve needle.

2. The self-tuning valve of claim 1, wherein: The valve needle is provided with a flange, and the flange top surface is matched with the inlet end of the valve channel bottom part to seal the inlet end.

3. The self-tuning valve of claim 2, wherein: The flange surface is provided with a rubber sleeve.

4. The self-tuning valve of claim 1, wherein: The bottom end of the valve needle is provided with a mounting blind hole one, and the bottom of the valve seat is provided with a mounting blind hole two, and the supporting spring is mounted in the mounting blind hole one and the mounting blind hole two.

5. The self-tuning valve of claim 1, wherein: The diaphragm is located at the top end of the valve body and is in the second air cavity.

6. The self-tuning valve of claim 5, wherein: The top end of the valve body is provided with an annular groove, and the edge of the diaphragm is provided with a corresponding annular boss, and the annular boss is matched in the annular groove.

7. The self-tuning valve of claim 1, wherein: The valve seat sealing ring is arranged between the valve body and the valve seat.

8. The self-tuning valve of claim 1, wherein: The thimble sealing ring is arranged between the valve needle and the valve body.

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