Clamping sleeve and soft sealing plug valve

Abstract

The utility model relates to the technical field of valves, and discloses a clamping sleeve and a soft sealing plug valve, the clamping sleeve comprises a clamping sleeve body, the clamping sleeve body is in a conical barrel shape, two installation windows are arranged on the clamping sleeve body, and the two installation windows are arranged on the two opposite sides of the clamping sleeve body; a plurality of exhaust holes are formed in the clamping sleeve body and located between the two installation windows. Two installation windows are arranged on a cutting sleeve body, the cutting sleeve is fixed to a protruding lip edge of an inlet and an outlet of a valve body in the soft sealing plug valve, and the two installation windows are used for being communicated with a flow channel in the valve body. Due to the fact that the multiple exhaust holes are formed in the clamping sleeve body, after the clamping sleeve is installed on a valve body in the soft sealing plug valve, the multiple exhaust holes are communicated with a cavity between the clamping sleeve and the valve body, the multiple exhaust holes are used for exhausting air in the cavity, the attaching performance of the clamping sleeve and the valve body is guaranteed, and then the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a ferrule and a soft-sealing plug valve. Background Art

[0002] A plug valve is a rotary valve with a plunger-shaped closing member. By rotating 90 degrees, the channel opening on the plug communicates with or separates from the channel opening on the valve body to achieve opening or closing of a valve. The shape of the plug can be cylindrical or conical.

[0003] A fixed ferrule plug valve is disclosed in the prior art. Through the settings of a ferrule, a flange, and a fixing hole, the ferrule is fixedly installed inside the valve body. Then, a hole groove connected to the inside of the valve body is opened on the clamping groove. Then, the ferrule is sealed by the fitting of a sealing ring with the outer wall of the ferrule, and it can cooperate well with the plug at the same time, which can reduce the wear between the plug and the valve body.

[0004] However, for the above-mentioned fixed ferrule plug valve, when the plug is pressed downward from top to bottom, there will be a cavity between the valve body and the ferrule, resulting in the pressure being trapped in the cavity during the downward pressing process of the plug, and the fitting between the ferrule and the valve body is not good, affecting the sealing effect. Summary of the Utility Model

[0005] In view of this, the utility model provides a ferrule to solve the problem that in a fixed ferrule plug valve, when the plug is pressed downward from top to bottom, there will be a cavity between the valve body and the ferrule, resulting in the pressure being trapped in the cavity during the downward pressing process of the plug, and the fitting between the ferrule and the valve body is not good, affecting the sealing effect.

[0006] In a first aspect, the utility model provides a ferrule, including:

[0007] A ferrule body, the ferrule body is in a conical cylinder shape;

[0008] Two installation windows are provided on the ferrule body, and the two installation windows are arranged on opposite sides of the ferrule body;

[0009] A plurality of exhaust holes are provided on the ferrule body, and the plurality of exhaust holes are located between the two installation windows.

[0010] In an optional embodiment, the plurality of exhaust holes are arranged in two columns along the axial direction of the ferrule body.

[0011] In an optional embodiment, the two columns of exhaust holes are arranged on opposite sides of the ferrule body.

[0012] In an optional embodiment, the exhaust holes are arranged at equal intervals.

[0013] In a second aspect, the present invention further provides a soft-sealed plug valve, comprising:

[0014] a valve body having a flow passage therein;

[0015] The aforementioned ferrule is arranged in the valve body, and the flow channel is communicated with the mounting window on the ferrule body;

[0016] A plug is arranged in the ferrule, and a channel is provided in the plug; the plug is configured to rotate under the action of an external force to force the channel to communicate with or stagger with the installation window.

[0017] In an optional embodiment, a plurality of exhaust holes on the ferrule body are connected to the side wall of the valve body and the ferrule body at intervals.

[0018] In an optional embodiment, the flow channel of the valve body is provided with a raised lip, and the mounting window on the ferrule body is engaged with the raised lip.

[0019] In an optional embodiment, the raised lip is arranged around the circumference of the flow channel opening.

[0020] The utility model provides a ferrule and soft-sealed plug valve, which has the following advantages:

[0021] The utility model provides a ferrule, comprising a ferrule body, which is cylindrical and provided with two installation windows, which are arranged on opposite sides of the ferrule body; and a plurality of exhaust holes are provided on the ferrule body, which are located between the two installation windows.

[0022] The ferrule of this structure is provided with two installation windows on the ferrule body. When the ferrule is installed on the valve body of the soft-sealed plug valve, the two installation windows are used to communicate with the flow channel in the valve body. A plurality of exhaust holes are provided on the ferrule body. After the ferrule is installed on the valve body of the soft-sealed plug valve, the plurality of exhaust holes are communicated with the cavity between the ferrule and the valve body. The plurality of exhaust holes are used to discharge the air inside the cavity to ensure the fit between the ferrule and the valve body, thereby ensuring the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1Schematic structural view of the ferrule provided in the embodiment of the present utility model;

[0025] Figure 2 Schematic structural view of the ferrule in another direction provided in the embodiment of the present utility model;

[0026] Figure 3 Schematic structural view of the soft-sealing plug valve provided in the embodiment of the present utility model;

[0027] Figure 4 Schematic structural view of the soft-sealing plug valve in another direction provided in the embodiment of the present utility model.

[0028] Explanation of reference numerals:

[0029] 1 - Installation window;

[0030] 2 - Exhaust hole;

[0031] 3 - Valve body;

[0032] 4 - Plug;

[0033] 5 - Ferrule;

[0034] 6 - Raised lip edge. Detailed implementation manners

[0035] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Embodiment 1

[0038] This embodiment provides a ferrule, as shown in Figure 1 and Figure 2As shown, it includes a ferrule body. The ferrule body is in the shape of a conical cylinder. There are two installation windows 1 on the ferrule body, and the two installation windows 1 are arranged on opposite sides of the ferrule body; there are several exhaust holes 2 on the ferrule body, and the several exhaust holes 2 are located between the two installation windows 1.

[0039] In this embodiment, the ferrule is used for a soft-sealing plug valve. In the current traditional soft-sealing plug valve, when the plug is pressed downwards from top to bottom, there is a cavity between the valve body and the ferrule. The gas inside the cavity will cause the pressure to be trapped in the cavity during the downward pressing process of the plug, resulting in poor fit between the ferrule and the valve body and affecting the sealing effect.

[0040] Therefore, in this embodiment, by providing two installation windows 1 on the ferrule body, when the ferrule 5 is installed on the valve body 3 in the soft-sealing plug valve, the two installation windows 1 are used to communicate with the flow channels in the valve body 3; by providing several exhaust holes 2 on the ferrule body, after the ferrule 5 is installed on the valve body 3 in the soft-sealing plug valve, the several exhaust holes 2 communicate with the cavity between the ferrule 5 and the valve body 3, and the several exhaust holes 2 are used to discharge the air inside the cavity to ensure the fit between the ferrule 5 and the valve body 3, thereby ensuring the sealing effect.

[0041] In some embodiments, as Figure 1 shown, the several exhaust holes 2 are arranged in two columns along the axial direction of the ferrule body. Figure 1 is a cross-sectional view of the ferrule 5, Figure 1 only one column of exhaust holes 2 is shown in

[0042] Furthermore, the two columns of exhaust holes 2 are arranged on opposite sides of the ferrule body described above.

[0043] Furthermore, the exhaust holes 2 are arranged at equal intervals.

[0044] It can be understood that the specific number of the exhaust holes 2 can be determined according to specific usage requirements.

[0045] The ferrule 5 provided in this embodiment discharges the gas inside the cavity between the ferrule 5 and the valve body 3 through the exhaust holes 2 provided on the ferrule body to ensure the fit between the ferrule 5 and the valve body 3, thereby ensuring the sealing effect.

[0046] Embodiment 2

[0047] This embodiment provides a soft-sealing plug valve, as Figure 3 and Figure 4 shown, which includes a valve body 3, a plug 4, and the ferrule 5 in Embodiment 1.

[0048] In this embodiment, a flow channel is provided inside the valve body 3, the ferrule 5 is provided inside the valve body 3, and the flow channel is connected to the installation window on the ferrule body; the plug 4 is sleeved in the ferrule 5, and a channel is provided in the plug 4; the plug 4 is configured to rotate under the action of external force to force the channel in the plug 4 to be connected to or staggered with the installation window 1.

[0049] like Figure 3 and Figure 4 As shown, the internal flow path of the valve body 3 includes an inlet, an outlet, and a cavity located between the inlet and outlet, both of which are connected to the cavity. The ferrule 5 is installed inside the valve body 3, and the installation window 1 on the ferrule body is connected to the inlet and outlet of the flow path of the valve body 3. The vent 2 on the ferrule body is connected to the cavity between the ferrule 5 and the valve body 3. After the ferrule 5 is installed in place, the vent 2 exhausts the air inside the cavity between the ferrule 5 and the valve body 3.

[0050] like Figure 3 and Figure 4 As shown, the plug 4 is sleeved in the ferrule 5 and connected to the handle on the outside of the valve body 3. A channel is provided in the plug 4. When the soft-seal plug valve needs to be opened, the handle is turned to drive the plug 4 to rotate inside the ferrule 5 until the channel on the movable plug 4 inside the ferrule 5 is connected to the installation window 1 on the ferrule body and the flow channel of the valve body 3. When the soft-seal plug valve needs to be closed, the handle is turned in the opposite direction to drive the plug 4 to rotate inside the ferrule 5 until the channel on the movable plug 4 inside the ferrule 5 is offset from the installation window 1 on the ferrule body and the flow channel of the valve body 3.

[0051] As an embodiment, the flow passage of the valve body 3 is provided with a raised lip 6 , and the mounting window 1 on the ferrule body is engaged with the raised lip 6 .

[0052] By providing a raised lip 6 at the flow channel opening of the valve body 3, when installing the ferrule 5, the installation window 1 on the ferrule body is engaged with the raised lip 6, thereby fixing the ferrule 5 and preventing the ferrule 5 from rotating during use. There is no need to press and then cut the channel, thereby ensuring its aesthetics.

[0053] Specifically, the raised lip 6 is arranged around the peripheral side of the flow channel opening, that is, the raised lip 6 is a rib surrounding the peripheral side of the flow channel opening and protruding from the peripheral surface of the flow channel opening. When installing the ferrule 5, the mounting window 1 on the ferrule body is placed on the rib on the peripheral surface of the flow channel opening, which can fix the ferrule 5.

[0054] The soft-sealed plug valve provided in this embodiment has exhaust holes 2 provided on the ferrule 5. After the ferrule 5 is installed on the valve body 3 in the soft-sealed plug valve, a plurality of exhaust holes 2 are connected to the cavity between the ferrule 5 and the valve body 3. The plurality of exhaust holes 2 are used to discharge the air inside the cavity to ensure the fit between the ferrule 5 and the valve body 3, thereby ensuring the sealing effect.

[0055] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of this utility model creation.

Claims

1. A ferrule, characterized in that, include: A ferrule body, wherein the ferrule body is in a conical cylindrical shape; Two installation windows (1) are provided on the ferrule body, and the two installation windows (1) are provided on opposite sides of the ferrule body; The ferrule body is provided with a plurality of exhaust holes (2), and the plurality of exhaust holes (2) are located between the two installation windows (1).

2. The ferrule according to claim 1, wherein, The plurality of exhaust holes (2) are arranged in two rows along the axial direction of the ferrule body.

3. The ferrule according to claim 2, wherein The two rows of exhaust holes (2) are arranged on opposite sides of the ferrule body.

4. The ferrule according to claim 2, characterized in that: The exhaust holes (2) are arranged at equal intervals.

5. A soft-sealing plug valve, characterized in that, include: a valve body (3) having a flow channel therein; The ferrule (5) according to any one of claims 1 to 4, wherein the ferrule (5) is arranged in the valve body (3), and the flow channel is connected to the mounting window (1) on the ferrule body; A plug (4) is sleeved in the sleeve (5), and a channel is provided in the plug (4); the plug (4) is configured to rotate under the action of an external force to force the channel to communicate with or stagger with the installation window (1).

6. The soft-sealing plug valve according to claim 5, characterized in that, A plurality of exhaust holes (2) on the ferrule body are in intermittent communication with the side wall of the valve body (3) and the ferrule body.

7. The soft-sealing plug valve according to claim 5, wherein, The flow passage of the valve body (3) is provided with a raised lip (6), and the mounting window (1) on the ferrule body is engaged with the raised lip (6).

8. The soft-sealing plug valve according to claim 7, characterized in that, The raised lip (6) is arranged around the circumference of the flow passage opening of the valve body (3).

Images