Improved high-strength plug valve

Abstract

The utility model relates to the technical field of plug-in valves, and discloses an improved high-strength plug-in valve which comprises a plug-in valve body, the plug-in valve body comprises a valve body, a plug-in mechanism is arranged on the valve body, the plug-in mechanism comprises a plug-in sleeve, and one end of the plug-in sleeve is fixedly connected with the valve body. Through the design of the annular protrusion and the annular groove, the connecting pipe is tightly matched with the inserting sleeve, axial loosening and displacement of the connecting pipe are effectively resisted, compared with a traditional inserting valve, the connecting stability is greatly improved, the medium leakage risk caused by inserting loosening is reduced, safe and stable operation of a system is guaranteed, and the service life of the system is prolonged. Potential safety hazards are reduced; secondly, a fastening base, a fastening piece and a hand screw in the locking assembly are matched, so that the firmness degree of connection is further enhanced, it is ensured that under long-term use and complex working conditions, the connection part is still reliable, the situation of frequent maintenance due to looseness is avoided, the working efficiency is improved, and the downtime and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of plug valve technology, and more specifically to an improved high-strength plug valve. Background Technology

[0002] In existing valve applications, cartridge valves are widely used due to their ease of installation. However, existing cartridge valves are prone to loosening during long-term use. This not only affects the valve's sealing performance, leading to media leakage, but may also affect the normal operation of the entire system, reduce work efficiency, and even pose safety hazards. Therefore, this paper studies and improves the existing structure and its shortcomings to provide an improved high-strength cartridge valve, aiming to achieve greater practical value. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an improved high-strength plug valve to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: an improved high-strength plug valve, comprising a plug valve body, the plug valve body including a valve body, the valve body being provided with a plug mechanism, the plug mechanism including:

[0005] A plug-in sleeve, one end of which is fixedly connected to the valve body, and at least one annular protrusion is provided at intervals along the axial direction on the inner wall of the plug-in sleeve.

[0006] A connecting tube is inserted into a plug sleeve, and an annular groove that matches the annular protrusion is provided on the outer surface of the connecting tube.

[0007] The locking assembly includes a fastening base, a fastening plate, a hand screw, and a threaded groove. The fastening base is fixedly connected to the connecting pipe, the fastening plate is fixed to the outer wall of the insertion sleeve, the top of the fastening base has a threaded groove, and a hand screw is vertically threaded through the fastening plate. The hand screw is screwed into the threaded groove to complete the locking.

[0008] Furthermore, the outer surface of the hand-tightening screw is provided with anti-slip texture, which is an interlaced diamond grid pattern, and the hand-tightening screw is made of high-strength alloy steel.

[0009] Furthermore, a sealing part is provided at the connection between the connecting pipe and the insertion sleeve. The sealing part includes a rubber sealing sleeve fitted on the connecting pipe, and the inner side of the rubber sealing sleeve is tightly fitted with the end of the insertion sleeve.

[0010] Furthermore, the fastening plate is provided with a countersunk hole that matches the shape of the head of the hand-tightening screw, and a rubber washer is provided in the countersunk hole.

[0011] Furthermore, the cross-section of the annular protrusion is trapezoidal, and the cross-sectional shape of the annular groove is complementary to that of the annular protrusion.

[0012] Furthermore, the outer surface of the insertion end of the connecting tube is frosted.

[0013] Furthermore, the outer wall of the insertion sleeve is provided with reinforcing ribs, which are evenly distributed along the axial direction of the insertion sleeve.

[0014] Furthermore, the reinforcing rib is an arc-shaped strip structure with a semi-circular cross-section. The reinforcing rib and the insert sleeve are integrally cast, and the material of the reinforcing rib is high-strength cast iron.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model, through the design of annular protrusions and annular grooves, ensures a tight fit between the connecting pipe and the plug sleeve, effectively resisting axial loosening and displacement of the connecting pipe. Compared with traditional plug valves, it greatly enhances the stability of the connection, reduces the risk of media leakage caused by loose plugs, ensures the safe and stable operation of the system, and reduces potential safety hazards. Secondly, the cooperation between the fastening base, fastening plate, and hand-tightening screw in the locking assembly further strengthens the firmness of the connection, ensuring that the connection remains reliable under long-term use and complex working conditions, avoiding frequent maintenance due to loosening, improving work efficiency, and reducing downtime and maintenance costs.

[0017] 2. The anti-slip texture and high-strength alloy steel material on the outer surface of the hand-tightening screws greatly enhance the ease of operation and durability. The diamond-patterned anti-slip design allows operators to apply force more firmly to tighten the screws, enabling efficient operation even in complex environments; the high-strength alloy steel material ensures that the screws are not easily deformed or damaged under long-term use and large external forces, continuously guaranteeing the reliability of the connection and reducing the frequency of maintenance.

[0018] The rubber sealing sleeve of the sealing part effectively solves the sealing problem at the connection, eliminates the risk of media leakage, and ensures the stability and safety of system operation. It is especially suitable for media transportation systems with strict sealing requirements, reducing resource waste and environmental pollution risks.

[0019] The countersunk hole and rubber gasket design not only enhance the fixing effect of the hand-tightened screw and prevent it from loosening due to vibration, but also further improve the sealing of the connection, blocking dust and moisture from entering and extending the service life of the valve.

[0020] The optimized shape of the annular protrusions and grooves, along with the frosted surface of the connecting pipe, enhances the tightness and stability of the connection, effectively resisting external pulling forces. The reinforcing ribs significantly improve the structural strength of the plug sleeve, enabling it to withstand greater external impacts and adapt to harsher working environments, providing a solid guarantee for the stable operation of the entire plug valve under complex working conditions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 This is a three-dimensional disassembled schematic diagram of the plug sleeve structure of this utility model.

[0023] Figure 3 This is a three-dimensional schematic diagram of the connecting pipe structure of this utility model.

[0024] Figure 4 This is a three-dimensional cross-sectional view of the plug sleeve structure of this utility model.

[0025] In the diagram: 100, valve body; 110, valve body; 111, plug sleeve; 112, connecting pipe; 113, annular groove; 114, annular protrusion; 115, fastening base; 116, fastening plate; 117, hand screw; 118, threaded groove; 119, anti-slip texture; 120, sealing part. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] Example 1: The improved high-strength plug valve of this utility model is mainly composed of a plug valve body 100, wherein the plug valve body 100 includes a valve body 110. A unique plug-in mechanism is carefully designed on the valve body 110, which plays a key role in ensuring the high strength and stability of the valve connection.

[0028] Specifically, the insertion mechanism includes an insertion sleeve 111, one end of which is firmly fixed to the valve body 110 by welding to form an integral structure. On the inner wall of the insertion sleeve 111, at least one annular protrusion 114 is arranged axially at intervals. The design of these annular protrusions 114 has been precisely calculated and verified through multiple experiments; their height, width, and spacing have been optimized to ensure a tight fit with the connecting pipe and a good anti-reverse effect.

[0029] The connecting pipe 112, as a component connecting to an external pipeline, needs to be inserted into the insertion sleeve 111. The outer surface of the connecting pipe 112 is machined with an annular groove 113 that precisely matches the annular protrusion 114. During actual installation, the connecting pipe 112 is aligned with the insertion sleeve 111 and inserted. The annular protrusion 114 will embed into the annular groove 113, thereby initially achieving relative fixation between the connecting pipe 112 and the insertion sleeve 111, preventing loosening and displacement of the connecting pipe in the axial direction.

[0030] To further ensure the robustness of the connection, this invention also includes a locking assembly. The locking assembly consists of a fastening base 115, a fastening plate 116, a hand-tightening screw 117, and a threaded groove 118. The fastening base 115 is tightly connected to the connecting pipe 112 by welding or integral molding, making it part of the connecting pipe 112 and allowing it to move synchronously with the connecting pipe. The fastening plate 116 is firmly fixed to the outer wall of the insertion sleeve 111 by welding, ensuring its positional stability. A threaded groove 118 is machined into the top of the fastening base 115, and the thread specification of the threaded groove 118 matches that of the hand-tightening screw 117. The fastening plate 116 is threaded vertically through it, allowing the hand-tightening screw 117 to be smoothly screwed in. After the connecting pipe 112 is inserted into the appropriate position of the plug sleeve 111, the hand screw 117 is screwed into the threaded hole of the fastening plate 116 and further screwed into the threaded groove 118 of the fastening base 115. The tightening force of the hand screw 117 tightly locks the connecting pipe 112 and the plug sleeve 111 together, effectively preventing the connecting pipe from loosening or detaching due to external force during use, and greatly improving the connection reliability and stability of the plug valve. Example 2

[0031] Example 2 is based on Example 1 and has undergone a series of optimizations and improvements, further enhancing the performance and practicality of the plug valve.

[0032] First, anti-slip textures 119 are provided on the outer surface of the hand-tightening screw 117. These textures 119 adopt an interlaced diamond grid design. This special texture effectively increases the friction between the operator's hand and the hand-tightening screw 117. Even when hands are sweaty or the operating environment is relatively humid, the operator can easily grip the hand-tightening screw 117 and rotate it, greatly improving the convenience and efficiency of installation and disassembly. At the same time, the hand-tightening screw 117 is made of high-strength alloy steel. This material has excellent strength and wear resistance, and can withstand large tightening forces without easily deforming or being damaged. This further ensures the reliability and stability of the locking component, thereby ensuring the connection firmness of the entire plug valve during long-term use.

[0033] A sealing part 120 is added at the connection between the connecting pipe 112 and the insert sleeve 111. The sealing part 120 is a rubber sealing sleeve, which has good elasticity and sealing performance. During installation, the rubber sealing sleeve is tightly fitted onto the connecting pipe 112, so that its inner side fits tightly against the end of the insert sleeve 111, forming an effective sealing barrier. This effectively prevents media leakage at the connection, improves the sealing performance of the insert valve, and ensures the normal operation of the valve and the safety of the system.

[0034] In addition, the fastening plate 116 is specially designed with a countersunk hole that matches the head shape of the hand screw 117, and a rubber washer is installed in the countersunk hole. When the hand screw 117 is screwed into the countersunk hole, the rubber washer can play a role in buffering and sealing. On the one hand, it can prevent the hand screw 117 from loosening due to vibration, and on the other hand, it can further improve the sealing performance between the fastening plate 116 and the hand screw 117, preventing external dust, moisture and other impurities from entering the threaded connection and affecting the reliability and service life of the connection.

[0035] The annular protrusion 114 is designed with a trapezoidal cross-sectional shape, which provides excellent anti-retraction performance. When the connecting tube 112 is subjected to outward tensile force, the trapezoidal annular protrusion 114 can better resist the tensile force, preventing the connecting tube 112 from dislodging from the insertion sleeve 111. The cross-sectional shape of the matching annular groove 113 has also been optimized accordingly, ensuring a tight fit with the annular protrusion 114, increasing the stability and reliability of the connection. Simultaneously, the outer surface of the insertion end of the connecting tube 112 is machined with a frosted finish. This frosted finish increases the friction between the connecting tube 112 and the insertion sleeve 111, further improving the tightness of the connection during initial insertion. This, combined with the fit of the annular protrusion and annular groove, ensures the high strength and stability of the connection.

[0036] To enhance the structural strength of the plug sleeve 111, reinforcing ribs are added to its outer side wall. These ribs are evenly distributed along the axial direction of the plug sleeve 111, forming an arc-shaped strip structure with a semi-circular cross-section. The reinforcing ribs and the plug sleeve 111 are manufactured using an integral casting process, ensuring the connection strength and integrity between them. The reinforcing ribs are made of high-strength cast iron, a material with high strength and rigidity, which effectively enhances the deformation resistance of the plug sleeve 111. This allows it to maintain structural stability even under significant external forces, further improving the reliability and durability of the entire plug valve and enabling it to adapt to more complex and harsh working environments.

[0037] Through the detailed description of the two embodiments above, it is clear that the improved high-strength plug valve of this utility model has unique features and advantages in terms of structural design, material selection and manufacturing process. These improvements effectively solve the problems of loose plug connection and poor sealing performance of existing plug valves, and have significant novelty, inventiveness and practicality.

[0038] The above embodiments are only some specific implementations of this utility model. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of this utility model, and such modifications and improvements should all fall within the protection scope of this utility model.

Claims

1. An improved high-strength plug valve, comprising a plug valve body (100), characterized in that: The plug-in valve body (100) includes a valve body (110), and a plug-in mechanism is provided on the valve body (110). The plug-in mechanism includes: A plug sleeve (111) is fixedly connected at one end to the valve body (110), and at least one annular protrusion (114) is provided on the inner wall of the plug sleeve (111) at intervals along the axial direction. Connecting tube (112), the connecting tube (112) is inserted into the plug sleeve (111), and the outer surface of the connecting tube (112) is provided with an annular groove (113) that matches the annular protrusion (114). The locking assembly includes a fastening base (115), a fastening plate (116), a hand screw (117), and a threaded groove (118). The fastening base (115) is fixedly connected to the connecting pipe (112). The fastening plate (116) is fixed on the outer wall of the plug sleeve (111). The top of the fastening base (115) is provided with a threaded groove (118). The hand screw (117) is vertically threaded through the fastening plate (116). The hand screw (117) is screwed into the threaded groove (118) to complete the locking.

2. The improved high-strength plug valve according to claim 1, characterized in that: The outer surface of the hand-tightening screw (117) is provided with anti-slip texture (119), which is an interlaced diamond grid pattern, and the material of the hand-tightening screw (117) is high-strength alloy steel.

3. The improved high-strength plug valve according to claim 1, characterized in that: A sealing part (120) is provided at the connection between the connecting pipe (112) and the insert sleeve (111). The sealing part (120) includes a rubber sealing sleeve sleeved on the connecting pipe (112). The inner side of the rubber sealing sleeve is tightly fitted to the end of the insert sleeve (111).

4. The improved high-strength plug valve according to claim 1, characterized in that: The fastening plate (116) is provided with a countersunk hole that matches the shape of the head of the hand-tightening screw (117), and a rubber washer is provided in the countersunk hole.

5. The improved high-strength plug valve according to claim 1, characterized in that: The cross-section of the annular protrusion (114) is trapezoidal, and the cross-sectional shape of the annular groove (113) is complementary to that of the annular protrusion (114).

6. The improved high-strength plug valve according to claim 1, characterized in that: The outer surface of the insertion end of the connecting tube (112) is frosted.

7. The improved high-strength plug valve according to claim 1, characterized in that: The outer wall of the insertion sleeve (111) is provided with reinforcing ribs, which are evenly distributed along the axial direction of the insertion sleeve (111).

8. The improved high-strength plug valve according to claim 7, characterized in that: The reinforcing rib is an arc-shaped strip structure with a semi-circular cross-section. The reinforcing rib and the insert sleeve (111) are integrally cast. The material of the reinforcing rib is high-strength cast iron.

Images