Sleeve assembly and valve

Abstract

The present application belongs to the technical field of valve, and particularly relates to a screw sleeve assembly and a valve, wherein the screw sleeve assembly comprises a liquid passing sleeve, a screw sleeve body and a sealing ring, the screw sleeve body is detachably connected with the liquid passing sleeve, the screw sleeve body is rotatable relative to the liquid passing sleeve, and the sealing ring is sleeved on the liquid passing sleeve. The screw sleeve assembly can reduce the abrasion of the sealing ring, and improve the sealing property and safety.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of valves, and particularly relates to a screw sleeve assembly and a valve. BACKGROUND

[0002] In China, valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceutical industry, water conservancy, power, municipal administration, steel industry and other industries, and play an important role in the national economy. The commonly used valves often have the phenomena of water leakage, gas leakage and oil leakage during the closing process, mainly because the commonly used sealing device adopts a sealing ring on a screw sleeve. The sealing ring is rubbed and worn with the valve hole wall during long-term use, causing the sealing ring to be worn, and then a gap is generated between the sealing ring and the valve hole wall, and the leakage phenomenon occurs. SUMMARY

[0003] The present application aims to at least partly solve one of the problems in the related art. To this end, the embodiments of the present application propose a screw sleeve assembly which can reduce the wear of the sealing ring and improve the sealing performance and safety.

[0004] The embodiments of the present application also propose a valve.

[0005] The screw sleeve assembly of the embodiments of the present application comprises: a liquid passing sleeve; a screw sleeve body which is detachably connected with the liquid passing sleeve and is rotatable relative to the liquid passing sleeve; a sealing ring which is sleeved on the liquid passing sleeve; and a wear-resistant ring which is arranged between the screw sleeve body and the liquid passing sleeve.

[0006] The screw sleeve assembly of the embodiments of the present application can reduce the wear of the sealing ring, improve the sealing performance and safety.

[0007] In some embodiments, the screw sleeve body is provided with a first hole, and the liquid passing sleeve is provided with a protrusion which can extend into the first hole.

[0008] In some embodiments, the liquid passing sleeve further comprises a limiting component which is connected with the protrusion and at least partially located in the first hole.

[0009] In some embodiments, the number of the sealing rings is multiple, and the multiple sealing rings are respectively sleeved on the liquid passing sleeve and are arranged at intervals in the length direction of the liquid passing sleeve.

[0010] In some embodiments, the liquid passing sleeve is provided with a first cavity, and the liquid passing sleeve is provided with a second hole which is in communication with the first cavity at one end.

[0011] In some embodiments, the second hole is located between two adjacent sealing rings.

[0012] In some embodiments, the screw sleeve body and the liquid passing sleeve are connected in a clearance fit.

[0013] In some embodiments, a first mounting portion is provided on the liquid passing sleeve away from the screw sleeve body, and the first mounting portion is adapted to be connected to a valve seat.

[0014] In some embodiments, a second mounting portion is provided on the screw sleeve body away from the liquid passing sleeve.

[0015] The valve according to the embodiments of the present application comprises a valve seat, wherein a valve hole is provided in the valve seat; a screw sleeve assembly, wherein the screw sleeve assembly is the screw sleeve assembly described above, and the screw sleeve assembly is arranged in the valve hole.

[0016] The valve according to the embodiments of the present application can reduce the wear of the sealing ring, and improve the sealing performance and safety. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the screw sleeve assembly according to the embodiments of the present application.

[0018] Figure 2 is a schematic view of the liquid passing sleeve in the screw sleeve assembly according to the embodiments of the present application.

[0019] Figure 3 is a schematic view of the screw sleeve assembly according to another embodiment of the present application.

[0020] REFERENCE SIGNS

[0021] screw sleeve body 1, second mounting portion 11, first hole 12, first section 121, second section 122,

[0022] liquid passing sleeve 2, liquid passing sleeve body 21, protrusion 22, first cavity 23, second hole 24, first mounting portion 25,

[0023] sealing ring 3, limiting component 4, wear-resistant ring 5. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] As shown in Figure 1 and Figure 2 shown, the screw sleeve assembly according to the embodiments of the present application comprises a liquid passing sleeve 2, a screw sleeve body 1, a sealing ring 3 and a wear-resistant ring, the screw sleeve body 1 is detachably connected to the liquid passing sleeve 2, and the screw sleeve body 1 is rotatable relative to the liquid passing sleeve 2, the sealing ring 3 is sleeved on the liquid passing sleeve 2, and the wear-resistant ring 5 is arranged between the screw sleeve body and the liquid passing sleeve.

[0026] Specifically, as shown in Figure 1 and Figure 2 , the liquid passing sleeve 2 is arranged in relative spacing with the screw sleeve body 1 in the up-down direction, the liquid passing sleeve 2 extends along the up-down direction, the screw sleeve assembly extends along the up-down direction, the upper end of the liquid passing sleeve 2 is detachably connected with the lower end of the screw sleeve body 1, the screw sleeve body 1 is rotatable relative to the liquid passing sleeve 2, the sealing ring 3 is sleeved on the liquid passing sleeve 2, the outer circumferential surface of the sealing ring 3 is in contact with the inner wall surface of the valve hole, the outer circumferential surface of the screw sleeve body 1 can be provided with threads, the screw sleeve body 1 is connected with the valve hole through threads, the screw sleeve body 1 is rotated downward to be connected with the valve hole through threads, so as to press the liquid passing sleeve 2 downward into the valve hole, and the sealing ring 3 is suitable for sealing the valve seat and the screw sleeve assembly, thereby sealing the valve.

[0027] The wear-resistant ring 5 is arranged between the screw sleeve body 1 and the liquid passing sleeve 2, the upper end of the liquid passing sleeve body 21 is provided with a groove, the groove is recessed downward, and the wear-resistant ring 5 is suitable for being installed in the groove. In this way, the wear-resistant ring 5 can avoid causing wear to the upper end of the liquid passing sleeve 2 when the screw sleeve body 1 rotates. The shape of the outer contour of the cross section of the groove can be rectangular, or the shape of the outer contour of the cross section of the groove can be arc-shaped to improve the installation stability of the wear-resistant ring 5.

[0028] Optionally, the material of the wear-resistant ring 5 can be metal, or the material of the wear-resistant ring 5 is non-metal, for example, the material of the wear-resistant ring 5 is rubber.

[0029] Optionally, the number of the wear-resistant ring 5 is multiple, and the multiple wear-resistant rings 5 are arranged in spacing in the radial direction of the liquid passing sleeve 2.

[0030] Optionally, the lower end of the screw sleeve body 1 is provided with a groove, the groove is recessed upward to install the wear-resistant ring 5, or the multiple wear-resistant rings 5 are arranged in spacing in the radial direction of the screw sleeve body 1, and optionally, the shape of the outer contour of the cross section of the groove can be rectangular, or the shape of the outer contour of the cross section of the groove can be arc-shaped to improve the installation stability of the wear-resistant ring.

[0031] Optionally, the liquid passing sleeve 2 is provided with a groove, the groove is suitable for installing the sealing ring 3, and optionally, the shape of the groove can be rectangular, or the shape of the groove can be arc-shaped to improve the installation stability of the sealing ring 3.

[0032] The screw sleeve assembly of the embodiment of the present application can avoid the abrasion of the sealing ring 3 caused by the rotation of the over-liquid sleeve 2 driven by the rotation of the screw sleeve body 1 during the installation of the screw sleeve assembly, compared with the screw sleeve assembly in the related art, the rotation of the over-liquid sleeve 2 driven by the screw sleeve body 1 during the installation of the screw sleeve assembly causes the abrasion of the sealing ring 3, the sealing performance and the safety of the screw sleeve assembly are improved. The wear-resistant ring 5 is arranged between the over-liquid sleeve 2 and the screw sleeve body 1, the abrasion of the over-liquid sleeve 2 caused by the rotation of the screw sleeve body 1 is avoided, the damage of the over-liquid sleeve 2 or the screw sleeve body 1 is avoided, and the stability and the safety of the screw sleeve assembly are improved.

[0033] In some embodiments, the screw sleeve body 1 is provided with the first hole 12, and the over-liquid sleeve 2 is provided with the protrusion 22, and the protrusion 22 can extend into the first hole 12.

[0034] Specifically, as shown in Figure 1 and Figure 2 , the over-liquid sleeve 2 can include the over-liquid sleeve body 21 and the protrusion 22, the upper end of the over-liquid sleeve body 21 is connected with the lower end of the protrusion 22, the over-liquid sleeve body 21 extends along the up and down directions, the protrusion 22 extends along the up and down directions, the first hole 12 extends along the up and down directions, the first hole 12 includes the first section 121 and the second section 122 which are in communication with each other, the first section 121 and the second section 122 are arranged opposite to each other in the up and down directions, the radial dimension of the first section 121 is smaller than the radial dimension of the second section 122, the upper end of the first section 121 is in communication with the lower end of the second section 122, the over-liquid sleeve 2 is provided with the protrusion 22 at the upper end, one end of the protrusion 22 penetrates through the first section 121, and the protrusion 22 at least partially extends into the second section 122, and the outer circumferential surface of the protrusion 22 can be in contact with the inner wall surface of the first section 121, so that the screw sleeve body 1 can be rotatable relative to the over-liquid sleeve 2 during the installation of the screw sleeve assembly, the abrasion of the sealing ring 3 on the over-liquid sleeve 2 is avoided to prevent the sealing performance from being reduced, and the sealing performance and the safety of the screw sleeve assembly are improved.

[0035] Optionally, the over-liquid sleeve 2 further includes the limiting component 4, the limiting component 4 is connected with the protrusion 22, and the limiting component 4 is at least partially located in the second section 122, for example, the limiting component 4 can be annular, the limiting component 4 is sleeved on the upper end of the protrusion 22, and the radial dimension of the limiting component 4 is greater than the radial dimension of the first section 121 to limit the protrusion 22 in the second section 122. When the screw sleeve assembly is disassembled, the screw sleeve body 1 is rotated to move the screw sleeve body 1 upward to disassemble the screw sleeve body 1, the limiting component 4 is in abutment with the screw sleeve body 1 to drive the over-liquid sleeve 2 to move upward to leave the valve hole, and the assembly and disassembly of the screw sleeve assembly are completed.

[0036] Optionally, the upper end of the protrusion 22 is provided with the groove, the groove is suitable for mounting the limiting component 4, and the shape of the outer contour of the cross section of the groove can be rectangular, or the shape of the outer contour of the cross section of the groove can be arc-shaped to improve the mounting stability of the limiting component 4.

[0037] Optionally, the protrusion 22 and the liquid passing sleeve 2 are integrally formed to improve the structural strength of the liquid passing sleeve 2. Alternatively, the protrusion 22 and the liquid passing sleeve 2 are connected by welding.

[0038] Optionally, the number of the limiting components 4 is multiple, the multiple limiting components 4 are sleeved on the protrusion 22, and the multiple limiting components 4 are located in the second section 122. The multiple limiting components 4 are sleeved on the upper end of the protrusion 22. The multiple limiting components 4 are arranged in the up-down direction at intervals. The radial dimension of the multiple limiting components 4 is greater than the radial dimension of the first section 121 to limit the protrusion 22 in the second section 122. When the screw sleeve assembly is disassembled, the screw sleeve body 1 is rotated to move the screw sleeve body 1 upward to disassemble the screw sleeve body 1. The limiting component abuts against the screw sleeve body 1 to drive the liquid passing sleeve 2 to move upward to leave the valve hole. The resistance between the limiting component 4 and the liquid passing sleeve 2 is greater than the resistance between the sealing ring 3 and the valve hole to pull the liquid passing sleeve upward, thereby completing the disassembly of the screw sleeve assembly.

[0039] Optionally, the upper end of the protrusion 22 is provided with multiple grooves, and the multiple grooves are suitable for mounting the multiple limiting components 4. Optionally, the shape of the outer contour of the cross section of the multiple grooves can be rectangular. Alternatively, the shape of the outer contour of the cross section of the multiple grooves can be arc-shaped to improve the mounting stability of the multiple limiting components 4.

[0040] The screw sleeve assembly of the embodiment of the present application is provided with the protrusion 22 and the limiting component 4. When the screw sleeve assembly is disassembled, the resistance between the limiting component 4 and the screw sleeve body 1 is greater than the resistance between the sealing ring 3 and the valve body, so that the screw sleeve body 1 is rotated upward to pull out the liquid passing sleeve 2 and the sealing ring 3, thereby improving the mounting efficiency of the screw sleeve assembly.

[0041] In another embodiment, the limiting component 4 is screw-shaped. The limiting component 4 is divided into a first part and a second part. The lower end of the first part is connected to the upper end of the second part. The protrusion 22 is provided with a groove which is recessed downward. The groove is provided with an internal thread. The outer periphery of the second part is provided with an external thread. The second part is connected to the groove of the protrusion 22 through the threads. The rotation direction of the internal thread of the groove of the protrusion 22 is opposite to the rotation direction of the external thread of the outer periphery of the screw sleeve body 1. The radial dimension of the first part of the limiting component 4 is greater than the radial dimension of the first section to limit the protrusion 22. When the screw sleeve assembly is disassembled, the rotation direction of the internal thread of the groove of the protrusion 22 is opposite to the rotation direction of the external thread of the outer periphery of the screw sleeve body 1. The limiting component 4 will not be rotated out of the groove of the protrusion 22 when the screw sleeve body 1 is rotated to be disassembled.

[0042] In some embodiments, the number of the sealing rings 3 is multiple. The multiple sealing rings 3 are respectively sleeved on the liquid passing sleeve 2. The multiple sealing rings 3 are arranged at intervals in the length direction of the liquid passing sleeve 2 (for example, the up-down direction as shown in the figure). Figure 1 In some embodiments, the number of the sealing rings 3 is multiple. The multiple sealing rings 3 are respectively sleeved on the liquid passing sleeve 2. The multiple sealing rings 3 are arranged at intervals in the length direction of the liquid passing sleeve 2 (for example, the up-down direction as shown in the figure).

[0043] Specifically, as shown in Figure 1 and Figure 2 , the number of sealing rings 3 is multiple, multiple sealing rings 3 are arranged in the up-down direction, multiple sealing rings 3 are sleeved on the liquid passing sleeve 2, and multiple sealing rings 3 can increase the sealing performance and safety of the screw sleeve assembly.

[0044] Optionally, the liquid passing sleeve 2 is provided with multiple grooves, the multiple grooves are arranged in the up-down direction, the multiple grooves are suitable for installing the multiple sealing rings 3, the shape of the outer contour of the cross section of the groove can be rectangular, or the shape of the outer contour of the cross section of the groove can be arc-shaped to improve the installation stability of the sealing ring 3.

[0045] In some embodiments, the liquid passing sleeve 2 is provided with a first cavity 23, and the liquid passing sleeve 2 is provided with a second hole 24, one end of the second hole 24 being in communication with the first cavity 23.

[0046] Specifically, as shown in Figure 1 and Figure 2 , the liquid passing sleeve 2 is provided with a first cavity 23, one end of the second hole 24 is in communication with the liquid passing cavity, the other end of the second hole 24 is connected with a fluid source, and the first cavity 23 can be provided with a piston assembly (not shown), the piston assembly moves in the up-down direction in the first cavity 23 to open or close the valve, thereby improving the stability and safety of the screw sleeve assembly.

[0047] Optionally, the second hole 24 is located between two adjacent sealing rings 3, so that when the second hole 24 flows through the fluid, the fluid leakage can be avoided, and the stability and safety of the screw sleeve assembly are improved.

[0048] In some embodiments, the cooperation mode between the screw sleeve body 1 and the liquid passing sleeve 2 is gap cooperation.

[0049] Specifically, as shown in Figure 1 and Figure 2 , the screw sleeve body 1 and the liquid passing sleeve 2 have a predetermined gap in the up-down direction, by providing the predetermined gap, while ensuring that the screw sleeve body 1 can rotate relative to the liquid passing sleeve 2, the lubricating oil can also be applied in the predetermined gap, the friction between the screw sleeve body 1 and the liquid passing sleeve 2 when rotating is reduced, and the stability and safety of the installation and disassembly of the screw sleeve body 1 are improved.

[0050] In some embodiments, the liquid passing sleeve 2 is provided with a first mounting portion 25 away from the screw sleeve body 1, and the first mounting portion 25 is suitable for being connected with a valve seat.

[0051] Specifically, as shown in Figure 1 and Figure 2As shown, the lower end of the liquid passing sleeve 2 is provided with a first mounting portion 25, the shape of the first mounting portion 25 is a regular hexagon, or the shape of the first mounting portion 25 is other existing shapes, for example, a circular shape. The first mounting portion 25 is suitable to be connected with the valve seat to install the screw sleeve assembly on the valve seat, thereby improving the stability and safety of the screw sleeve assembly.

[0052] In some embodiments, the screw sleeve body 1 is provided with a second mounting portion 11 away from the liquid passing sleeve 2.

[0053] Specifically, as shown in Figure 1 and Figure 2 The screw sleeve body 1 is provided with a second mounting portion 11, which can be hexagonal, or the second mounting portion 11 can be other existing shapes, for example, a hexagonal socket wrench can be inserted into the second mounting portion 11 to rotate the screw sleeve body 1, thereby connecting the screw sleeve body 1 with the valve hole of the valve through the thread, improving the installation efficiency of the screw sleeve body 1.

[0054] The valve of the embodiment of the present application comprises a valve seat and a screw sleeve assembly, the valve seat is provided with a valve hole, the screw sleeve assembly is any one of the screw sleeve assemblies described above, and the screw sleeve assembly is arranged in the valve hole.

[0055] Specifically, the inner wall surface of the upper end of the valve hole is provided with an internal thread, the outer circumferential surface of the screw sleeve body 1 is provided with an external thread, the screw sleeve body 1 is connected with the upper end of the valve hole through the thread, the screw sleeve body 1 is rotated downward to connect the screw sleeve body 1 with the upper end of the valve hole through the thread, and then the liquid passing sleeve 2 is pressed downward into the valve hole, that is, the screw sleeve assembly is arranged in the valve hole.

[0056] The valve of the embodiment of the present application, by adopting the screw sleeve assembly described above, compared with the abrasion of the sealing ring 3 in the related art when the screw sleeve assembly is installed and rotated, the screw sleeve assembly of the present application can reduce the abrasion of the sealing ring 3, and improve the sealing performance and safety of the valve.

[0057] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0058] In addition, the terms "first", "second", etc. are used only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0059] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "on", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0061] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present description and the features of different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A screw sleeve assembly, characterized in that The screw sleeve assembly comprises: a liquid passing sleeve; a screw sleeve body, which is detachably connected with the liquid passing sleeve and is rotatable relative to the liquid passing sleeve, the screw sleeve body is provided with a first hole, the liquid passing sleeve is provided with a protrusion, the protrusion can extend into the first hole, the liquid passing sleeve further comprises a limiting component, the limiting component is connected with the protrusion and is at least partially located in the first hole, the first hole comprises a first section and a second section which are in communication with each other, the first section and the second section are arranged oppositely in the axial direction, the radial dimension of the first section is smaller than that of the second section, the limiting component is at least partially located in the second section, the radial dimension of the limiting component is greater than that of the first section to limit the protrusion in the second section, the upper end of the first section is in communication with the lower end of the second section, one end of the protrusion passes through the first section, and the protrusion at least partially extends into the second section; a sealing ring, which is sleeved on the liquid passing sleeve; a wear-resistant ring, which is arranged between the screw sleeve body and the liquid passing sleeve.

2. The sleeve assembly of claim 1, wherein The number of the sealing rings is multiple, the multiple sealing rings are respectively sleeved on the liquid passing sleeve, and the multiple sealing rings are arranged at intervals in the length direction of the liquid passing sleeve.

3. The sleeve assembly of claim 2, wherein, The liquid passing sleeve is provided with a first cavity, and the liquid passing sleeve is provided with a second hole, one end of the second hole being in communication with the first cavity.

4. The sleeve assembly of claim 3, wherein The second hole is located between two adjacent sealing rings.

5. A thread insert assembly according to any one of claims 1 to 4, wherein, The cooperation mode between the screw sleeve body and the liquid passing sleeve is gap cooperation.

6. The sleeve assembly of claim 1, wherein, The liquid passing sleeve is provided with a first mounting portion on the side away from the screw sleeve body, and the first mounting portion is adapted to be connected with a valve seat.

7. The sleeve assembly of claim 1, wherein The screw sleeve body is provided with a second mounting portion on the side away from the liquid passing sleeve.

8. A valve, characterized by The screw sleeve assembly comprises: a valve seat, which is provided with a valve hole; a screw sleeve assembly, which is any one of the screw sleeve assemblies according to claims 1-7, and is arranged in the valve hole.

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