A stopcock valve stem assembly

Abstract

The utility model provides a cock valve core subassembly relates to cock valve technical field, include: valve body, the bottom of valve body is opened to have the dismounting groove, the one side of valve body bottom end is opened to have the baffle groove, the top of baffle groove inner chamber is opened to have the valve core groove, the center of valve core groove inner chamber top is opened to have the valve rod groove, the utility model, uses spanner to dismantle the bolt, loses the limitation of bolt after, can pull baffle subassembly to the outside, knocks the top of valve rod, and the valve core subassembly falls from the inside of baffle groove, can complete the dismounting of cock valve core subassembly, installs, in the bottom of valve body, the valve core subassembly is inserted into baffle groove, then baffle subassembly is inserted into baffle groove, in the process of baffle subassembly insertion, installs stainless steel ball no.2, finally uses spanner to install the bolt, reduces the number of bolt installation and dismounting in the process of replacement, is more convenient, improves the replacement efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of plug valve technology, and in particular to a plug valve core assembly. Background Technology

[0002] A plug valve is a rotary valve with a shut-off element or plunger. It is a type of valve that opens or closes by rotating 90 degrees to connect or separate the passage on the plug from the passage on the valve body. The plug can be cylindrical or conical in shape.

[0003] However, in the use of plug valves in the existing technology, it has been found that the valve core assembly of the plug valve may be damaged due to long-term use and needs maintenance and replacement. Currently, some plug valve core assemblies are fixed by multiple bolts, which means that when replacing the plug valve core assembly, multiple bolts need to be disassembled and installed, which is inconvenient and reduces the replacement efficiency of the plug valve core assembly. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plug valve core assembly, comprising: a valve body, wherein a disassembly groove is provided at the bottom of the valve body, a baffle groove is provided on one side of the bottom end of the valve body, a valve core groove is provided at the top of the inner cavity of the baffle groove, and a valve stem groove is provided through the center of the top of the inner cavity of the valve core groove; the disassembly groove, the baffle groove, the valve core groove, and the valve stem groove are internally interconnected; an internal thread groove is provided on one side of the bottom end of the valve body, the internal thread groove being located above the baffle groove; and multiple internal thread T-shaped grooves are provided circumferentially at equal intervals at the bottom end of the valve body. The T-slots and baffle slots are internally connected. The top of the inner cavity of each of the multiple internal thread T-slots is movably fitted with a T-shaped pressure head. The inner cavity of each of the multiple internal thread T-slots is fitted with a spring. The bottom end of each of the multiple springs is fixedly connected with an external thread limiting rod. The surface of the top of each of the multiple springs is correspondingly fitted to the bottom of the multiple T-shaped pressure heads. The surface of each of the multiple external thread limiting rods is correspondingly threaded and fitted to the bottom of the inner cavity of each of the multiple internal thread T-slots. The bottom of each of the multiple external thread limiting rods is provided with a cross-shaped groove. The valve core slot is provided with a valve core assembly. The baffle slot is provided with a baffle assembly.

[0006] Furthermore, both ends of the valve body are fixedly connected to connecting plates, and the two connecting plates are connected to the interior of the valve body. The sides of the two connecting plates are provided with multiple mounting holes that are equidistant from each other in a circular pattern.

[0007] Furthermore, the valve core assembly includes a valve core, a through groove is formed on the side of the valve core, a valve stem is fixedly connected to the center of the top of the through groove, a plurality of hemispherical grooves are formed at equal intervals around the top of the valve core, a sealing ring groove is formed around the top of the arc-shaped surface of the valve core, a plurality of hemispherical grooves are formed at equal intervals around the bottom of the valve core, and a sealing ring groove is formed around the bottom of the arc-shaped surface of the valve core.

[0008] Furthermore, each of the multiple hemispherical grooves 1 has a stainless steel bead 1 movably fitted inside, and each of the sealing ring grooves 1 has a sealing ring 1 movably fitted inside. Similarly, each of the multiple hemispherical grooves 2 has a stainless steel bead 2 movably fitted inside, and each of the sealing ring grooves 2 has a sealing ring 2 movably fitted inside. The top surfaces of the multiple stainless steel beads 1 are movably fitted to the top of the valve core groove cavity, the surface of the sealing ring 1 is movably fitted to the top of the arc-shaped surface of the valve core groove cavity, and the surface of the sealing ring 2 is movably fitted to the bottom of the arc-shaped surface of the valve core groove cavity.

[0009] Furthermore, the baffle assembly includes a baffle, the bottom of which has a plurality of hemispherical grooves equidistantly spaced around its circumference, and an arc-shaped fitting wall is fixedly connected to one side of the top of the baffle. A through hole is provided through the side of the arc-shaped fitting wall, and a bolt is movably embedded inside the through hole.

[0010] Furthermore, the surface of the valve core is movably fitted and embedded inside the valve core groove, the bottom of the arc-shaped surface of the valve stem is movably fitted and embedded inside the valve stem groove, and the bottom surfaces of the plurality of stainless steel beads are fitted to the bottom of the baffle.

[0011] Furthermore, the surface of the baffle is movably fitted and embedded inside the baffle groove, the surface thread of one end of the bolt is embedded inside the internal thread groove, one side of the arc-shaped fitting wall is fitted to the side of the bottom end of the valve body, and the surfaces of the top ends of the multiple T-shaped pressure heads are correspondingly movably fitted and embedded inside the multiple hemispherical grooves.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention allows for the removal of bolts using a wrench. Once the bolts are removed, the baffle assembly can be pulled outwards, and the top of the valve stem can be tapped. The valve core assembly then falls out of the baffle groove, completing the disassembly of the plug valve core assembly. During installation, the valve core assembly is inserted into the baffle groove at the bottom of the valve body, and then the baffle assembly is inserted into the baffle groove. During the insertion of the baffle assembly, the stainless steel ball is installed. Finally, the bolts are installed using a wrench. This design reduces the number of bolts that need to be installed and removed during replacement, making it more convenient and improving replacement efficiency. Attached Figure Description

[0014] Figure 1 This utility model provides an overview structural diagram of a plug valve core assembly;

[0015] Figure 2 A cross-sectional view of a plug valve core assembly provided by this utility model;

[0016] Figure 3 An exploded view of a plug valve core assembly provided by this utility model;

[0017] Figure 4 A bottom exploded view of a plug valve core assembly provided for this utility model;

[0018] Figure 5 A partial schematic diagram of a valve core assembly for a plug valve provided by this utility model;

[0019] Figure 6 A schematic diagram of a baffle assembly for a plug valve core assembly provided by this utility model.

[0020] Legend:

[0021] 1. Valve body; 101. Connecting plate; 102. Mounting hole; 103. Disassembly groove; 104. Baffle groove; 105. Valve core groove; 106. Valve stem groove; 107. Internal thread groove; 108. Internal thread T-groove; 109. T-shaped pressure head; 110. Spring; 111. External thread limit rod; 112. Cross-shaped groove; 2. Valve core assembly; 201. Valve core; 202. Through groove; 203. 1. Valve stem; 204. Hemispherical groove one; 205. Stainless steel ball one; 206. Sealing ring groove one; 207. Sealing ring one; 208. Hemispherical groove two; 209. Stainless steel ball two; 210. Sealing ring groove two; 211. Sealing ring two; 3. Baffle assembly; 301. Baffle; 302. Hemispherical groove three; 303. Arc-shaped fitting wall; 304. Through hole; 305. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6This utility model provides a technical solution: a plug valve core assembly, comprising: a valve body 1, a disassembly groove 103 at the bottom of the valve body 1, a baffle groove 104 on one side of the bottom end of the valve body 1, a valve core groove 105 at the top of the inner cavity of the baffle groove 104, and a valve stem groove 106 penetrating at the center of the top of the inner cavity of the valve core groove 105. The disassembly groove 103, the baffle groove 104, the valve core groove 105, and the valve stem groove 106 are internally connected. An internal thread groove 107 is provided on one side of the bottom end of the valve body 1, the internal thread groove 107 being located above the baffle groove 104. Multiple internal thread T-slots 108 are circumferentially and equidistantly penetratingly formed at the bottom end of the valve body 1, the multiple internal thread T-slots 108 being connected to... The baffle groove 104 is internally connected. The top of the inner cavity of the multiple internal thread T-slots 108 is movably fitted with T-shaped pressure heads 109. The inner cavity of the multiple internal thread T-slots 108 is fitted with springs 110. The bottom end of the multiple springs 110 is fixedly connected with external thread limiting rods 111. The top surface of the multiple springs 110 is correspondingly fitted with the bottom of the multiple T-shaped pressure heads 109. The surface of the multiple external thread limiting rods 111 is correspondingly threaded and fitted into the bottom of the inner cavity of the multiple internal thread T-slots 108. The bottom of the multiple external thread limiting rods 111 is provided with cross-shaped grooves 112. The valve core groove 105 is provided with a valve core assembly 2. The baffle groove 104 is provided with a baffle assembly 3.

[0024] Specifically: Use a wrench to remove bolt 305. Once bolt 305 is removed, pull the baffle assembly 3 outwards and tap the top of valve stem 203. The valve core assembly 2 will then fall out of the baffle groove 104, completing the disassembly of the plug valve core assembly. During installation, insert the valve core assembly 2 into the baffle groove 104 at the bottom of the valve body 1, then insert the baffle assembly 3 into the baffle groove 104. During the insertion of the baffle assembly 3, install the stainless steel ball 209. Finally, use a wrench to install bolt 305. This reduces the number of bolts to be installed and removed during replacement, making it more convenient and improving replacement efficiency. (Cross-shaped groove 1) The opening at 12 facilitates the disassembly of the external thread limit rod 111 using tools, making it easy to replace the internal spring 110. Under the action of the spring 110, the top of the baffle 301 is tightly attached to the top of the inner cavity of the baffle groove 104, while ensuring that the stainless steel ball 205 is tightly attached to the top of the inner cavity of the valve core groove 105, and the sealing rings 207 and 211 are tightly attached to the inner cavity of the valve core groove 105. The top of the T-shaped pressure head 109 is a hemispherical design, and the internal thread T-shaped groove 108 limits the T-shaped pressure head 109, ensuring that the top of the hemispherical part of the T-shaped pressure head 109 is always partially embedded in the internal thread T-shaped groove 108, which facilitates the installation of the baffle assembly 3.

[0025] In one embodiment, both ends of the valve body 1 are fixedly connected to a connecting plate 101, the two connecting plates 101 are in communication with the interior of the valve body 1, and the sides of the two connecting plates 101 are provided with a plurality of mounting holes 102 at equal intervals around the circumference.

[0026] Specifically, such as Figure 1 As shown: This plug valve can be installed by connecting it to the mounting hole on the pipeline through the mounting hole 102 and securing it with bolts and nuts.

[0027] In one embodiment, the valve core assembly 2 includes a valve core 201. A through groove 202 is provided through the side of the valve core 201. A valve stem 203 is fixedly connected to the center of the top of the through groove 202. A plurality of hemispherical grooves 204 are provided at equal intervals around the top of the valve core 201. A sealing ring groove 206 is provided around the top of the arc-shaped surface of the valve core 201. A plurality of hemispherical grooves 208 are provided at equal intervals around the bottom of the valve core 201. A sealing ring groove 210 is provided around the bottom of the arc-shaped surface of the valve core 201.

[0028] Specifically, such as Figure 3 As shown: Sealing ring 1 207 and sealing ring 211 are tightly attached to the inner cavity of valve core groove 105 to ensure the sealing of this plug valve core assembly and prevent media leakage.

[0029] In one embodiment, stainless steel beads 205 are movably fitted inside the interior of multiple hemispherical grooves 204, sealing rings 207 are movably fitted inside the interior of sealing ring grooves 206, stainless steel beads 209 are movably fitted inside the interior of multiple hemispherical grooves 208, and sealing rings 211 are movably fitted inside the interior of sealing ring grooves 210. The top surfaces of the stainless steel beads 205 are movably fitted to the top of the inner cavity of the valve core groove 105, the surface of the sealing rings 207 is movably fitted to the top of the arcuate surface of the inner cavity of the valve core groove 105, and the surface of the sealing rings 211 is movably fitted to the bottom of the arcuate surface of the inner cavity of the valve core groove 105.

[0030] Specifically, such as Figure 3 As shown: Stainless steel ball 205 can reduce the friction between valve core 201 and the top of the inner cavity of valve core groove 105, thus extending the service life of this plug valve core assembly; Stainless steel ball 209 can reduce the friction between valve core 201 and baffle 301, thus extending the service life of this plug valve core assembly.

[0031] In one embodiment, the baffle assembly 3 includes a baffle 301. The bottom of the baffle 301 is provided with a plurality of hemispherical grooves 302 at equal intervals around the circumference. An arc-shaped fitting wall 303 is fixedly connected to one side of the top of the baffle 301. A through hole 304 is provided through the side of the arc-shaped fitting wall 303. A bolt 305 is movably embedded inside the through hole 304.

[0032] Specifically, such as Figure 6 As shown: Under the action of the spring force of the spring 110, the top of the T-shaped pressure head 109 is tightly attached to the inside of the hemispherical groove 302, so that the top of the baffle 301 is tightly attached to the top of the inner cavity of the baffle groove 104, while ensuring that the stainless steel ball 205 is tightly attached to the top of the inner cavity of the valve core groove 105, and the sealing ring 207 and the sealing ring 211 are tightly attached to the inner cavity of the valve core groove 105.

[0033] In one embodiment, the surface of the valve core 201 is movably fitted and embedded inside the valve core groove 105, the bottom of the arc-shaped surface of the valve stem 203 is movably fitted and embedded inside the valve stem groove 106, and the bottom surfaces of the multiple stainless steel beads 209 are fitted to the bottom of the baffle 301.

[0034] Specifically, such as Figure 2 As shown: the valve stem groove 106 provides space for the rotation of the valve stem 203, and the valve stem 203 can be connected to an external handle for easy control of the valve core assembly of this plug valve.

[0035] In one embodiment, the surface of the baffle 301 is movably fitted and embedded inside the baffle groove 104, the surface thread of one end of the bolt 305 is embedded inside the internal thread groove 107, one side of the arc-shaped fitting wall 303 is fitted to the side of the bottom end of the valve body 1, and the surfaces of the top ends of the multiple T-shaped pressure heads 109 are correspondingly movably fitted and embedded inside the multiple hemispherical grooves 302.

[0036] Specifically, such as Figure 2 As shown: Under the action of the spring force of the spring 110, the top of the T-shaped pressure head 109 is tightly attached to the inside of the hemispherical groove 302, so that the top of the baffle 301 is tightly attached to the top of the inner cavity of the baffle groove 104, while ensuring that the stainless steel ball 205 is tightly attached to the top of the inner cavity of the valve core groove 105, and the sealing ring 207 and the sealing ring 211 are tightly attached to the inner cavity of the valve core groove 105.

[0037] Working principle: When it is necessary to replace the valve core assembly of this plug valve, it is first necessary to ensure that the system has been depressurized and the medium in the pipeline has been emptied.

[0038] Use a wrench to remove bolt 305. Once bolt 305 is no longer in place, pull the baffle assembly 3 outward. During this process, the T-shaped pressure head 109 is compressed and moves downward inside the internal thread T-groove 108. The spring 110 is compressed and deformed. The top of the T-shaped pressure head 109 no longer limits the baffle assembly 3. When the baffle assembly 3 is no longer in contact with the T-shaped pressure head 109, under the action of the spring force of the spring 110, the T-shaped pressure head 109 moves upward to the top of the internal cavity of the internal thread T-groove 108. During the process of pulling the baffle assembly 3, multiple stainless steel balls 209 will fall off. Continue pulling the baffle assembly 3 until it is disengaged from the baffle groove 104. This completes the disassembly of the baffle assembly 3. Finally, tap the top of the valve stem 203, and the valve core assembly 2 will fall out of the baffle groove 104. This completes the disassembly of the plug valve core assembly.

[0039] During installation, place multiple stainless steel balls 205 into the corresponding hemispherical grooves 204. Then, insert the valve core assembly 2 into the baffle groove 104 from the bottom of the valve body 1 and move it upwards until the hemispherical groove 204 fits against the top of the inner cavity of the valve core groove 105. Next, insert the baffle assembly 3 into the baffle groove 104. During the insertion of the baffle assembly 3, place stainless steel balls 209 from the baffle groove 104 into the corresponding hemispherical grooves 302 according to the insertion depth of the baffle assembly 3. After placement, continue... Insert the baffle assembly 3. The top of the baffle 301 limits the stainless steel ball 209. During the insertion of the baffle assembly 3, the T-shaped pressure head 109 is squeezed and moves downward inside the internal thread T-groove 108. The spring 110 is squeezed and deformed. After the baffle 301 is fully inserted, the top of the baffle 301 is pressed tightly against the top of the inner cavity of the baffle groove 104 by the elastic force of the spring 110. Finally, use a wrench to install the bolt 305 to complete the replacement of the valve core assembly of this plug valve.

[0040] This design reduces the number of bolts required for installation and removal during the replacement process, making it more convenient and improving replacement efficiency.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A plug valve core assembly, characterized in that, include: A valve body (1) is provided with a disassembly groove (103) at its bottom and a baffle groove (104) on one side of its bottom end. A valve core groove (105) is provided at the top of the inner cavity of the baffle groove (104). A valve stem groove (106) is provided through the center of the top of the inner cavity of the valve core groove (105). The disassembly groove (103), the baffle groove (104), the valve core groove (105), and the valve stem groove (106) are interconnected. An internal thread groove (107) is provided on one side of the bottom end of the valve body (1). The internal thread groove (107) is located above the baffle groove (104). Multiple internal thread T-slots (108) are provided circumferentially at equal intervals at the bottom end of the valve body (1). The multiple internal thread T-slots (108) are connected to the inner cavity of the baffle groove (104). The top of each of the multiple internal thread T-slots (108) is movably fitted with a T-shaped pressure head (109). Each of the multiple internal thread T-slots (108) is fitted with a spring (110). Each of the multiple springs (110) is fixedly connected to an external thread limiting rod (111). The top surfaces of the multiple springs (110) are fitted to the bottom of the multiple T-shaped pressure heads (109). The surfaces of the multiple external thread limiting rods (111) are threadedly fitted to the bottom of the multiple internal thread T-slots (108). Each of the multiple external thread limiting rods (111) has a cross-shaped groove (112) at its bottom. A valve core assembly (2) is provided inside the valve core groove (105). A baffle assembly (3) is provided inside the baffle groove (104).

2. The valve core assembly of a plug valve according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly connected to connecting plates (101). The two connecting plates (101) are connected to the interior of the valve body (1). The sides of the two connecting plates (101) are provided with multiple mounting holes (102) that are equidistant from each other in a circular pattern.

3. The valve core assembly of a plug valve according to claim 1, characterized in that: The valve core assembly (2) includes a valve core (201). A through groove (202) is provided through the side of the valve core (201). A valve stem (203) is fixedly connected to the center of the top of the through groove (202). A plurality of hemispherical grooves (204) are provided at equal intervals around the top of the valve core (201). A sealing ring groove (206) is provided around the top of the arc surface of the valve core (201). A plurality of hemispherical grooves (208) are provided at equal intervals around the bottom of the valve core (201). A sealing ring groove (210) is provided around the bottom of the arc surface of the valve core (201).

4. A plug valve core assembly according to claim 3, characterized in that: Stainless steel beads (205) are movably fitted inside the interior of each of the hemispherical grooves (204). A sealing ring (207) is movably fitted inside the interior of the sealing ring groove (206). Stainless steel beads (209) are movably fitted inside the interior of each of the hemispherical grooves (208). A sealing ring (211) is movably fitted inside the interior of the sealing ring groove (210). The top surfaces of the stainless steel beads (205) are movably fitted to the top of the inner cavity of the valve core groove (105). The surface of the sealing ring (207) is movably fitted to the top of the arc-shaped surface of the inner cavity of the valve core groove (105). The surface of the sealing ring (211) is movably fitted to the bottom of the arc-shaped surface of the inner cavity of the valve core groove (105).

5. A plug valve core assembly according to claim 1, characterized in that: The baffle assembly (3) includes a baffle (301). The bottom of the baffle (301) is provided with a plurality of hemispherical grooves (302) at equal intervals around the circumference. An arc-shaped fitting wall (303) is fixedly connected to one side of the top of the baffle (301). A through hole (304) is provided through the side of the arc-shaped fitting wall (303). A bolt (305) is movably embedded inside the through hole (304).

6. A plug valve core assembly according to claim 4, characterized in that: The surface of the valve core (201) is movably fitted and embedded inside the valve core groove (105), the bottom of the arc-shaped surface of the valve stem (203) is movably fitted and embedded inside the valve stem groove (106), and the bottom surfaces of the multiple stainless steel beads (209) are fitted to the bottom of the baffle (301).

7. A plug valve core assembly according to claim 5, characterized in that: The surface of the baffle (301) is movably fitted and embedded inside the baffle groove (104), the surface thread of one end of the bolt (305) is embedded inside the internal thread groove (107), one side of the arc-shaped fitting wall (303) is fitted to the side of the bottom end of the valve body (1), and the surfaces of the top ends of the multiple T-shaped pressure heads (109) are correspondingly movably fitted and embedded inside the multiple hemispherical grooves (302).

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