Stainless steel gate valve convenient to disassemble and assemble

Abstract

The stainless steel gate valve comprises a valve body, a valve rod, a valve plate and an upper valve cover, the upper end portion of the valve body is connected with the upper valve cover through a plug-in assembly, the valve rod is fixedly installed at the upper end portion of the upper valve cover, the plug-in assembly comprises a plug-in pin and a limiting sleeve, the limiting sleeve is installed on the valve body through a screw, and the plug-in pin is fixedly installed on the valve plate. The outer side of the limiting sleeve is movably sleeved with a sliding sleeve, the sliding sleeve is provided with a receding groove corresponding to the limiting sleeve, a limiting boss is arranged on the right side of the receding groove, a reset spring is arranged on the inner side of the sliding sleeve, the limiting sleeve is movably sleeved with the reset spring, and the reset spring is arranged between the limiting sleeve and the sliding sleeve. A limiting ball is arranged on the inner side of the limiting boss, a clamping groove used for containing the limiting ball is formed in the inserting pin, and the limiting ball is annularly embedded in the inserting pin. According to the scheme, through the arrangement of the plug-in assembly, assistance of bolts and nuts is not needed, mounting and dismounting efficiency is high, operation is convenient, and maintenance is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gate valve, concretely is a stainless steel gate valve convenient to dismount. BACKGROUND

[0002] The gate valve has the characteristics of small fluid resistance, large applicable pressure and temperature range, etc., and is a most commonly used cut-off valve. In the field of pipeline fluid control in petroleum, chemical industry, oil refining, metallurgy and other industries, the connection mode of the commonly used gate valve and the pipeline device is to use bolts and nuts to cooperate to realize the fixation and fastening of the pipeline and the gate valve. However, the disadvantage is that it is inconvenient to disassemble, maintain and replace after long-term use. In view of this, we propose a stainless steel gate valve convenient to dismount. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a stainless steel gate valve convenient to dismount, to solve the problem that the existing gate valve and pipeline connection adopt bolts and nuts to cooperate to realize the fixation and fastening of the pipeline and the gate valve. However, the disadvantage is that it is inconvenient to disassemble, maintain and replace after long-term use.

[0004] To achieve the above object, the utility model provides the following technical scheme: a stainless steel gate valve convenient to dismount, including valve body, valve rod, valve plate and upper valve cover, the valve plate is located at the lower end of the valve rod, the upper end of the valve body is connected with the upper valve cover through the plug-in assembly, the valve rod is fixedly installed on the upper end of the upper valve cover, the upper end of the valve rod is fixedly installed with the handrail rod, the plug-in assembly includes plug-in pin and limit sleeve, the limit sleeve is installed on the valve body through the screw, the plug-in pin is movably inserted into the limit sleeve, the sliding sleeve is movably sleeved on the outer side of the limit sleeve, the sliding sleeve is provided with a gap groove corresponding to the limit sleeve, a limiting boss is arranged on the right side of the gap groove, a reset spring is arranged on the inner side of the sliding sleeve, the reset spring is movably sleeved on the limit sleeve, and the reset spring is arranged between the limit sleeve and the sliding sleeve, a limiting ball is arranged on the inner side of the limiting boss, a clamping groove for placing the limiting ball is formed in the plug-in pin, and the limiting ball is annularly embedded in the plug-in pin.

[0005] Preferably, the reset spring is arranged on the right side of the limiting ball, and the limiting ball is arranged on the inner side of the limit sleeve.

[0006] Preferably, a sealing ring is embedded in one side of the limit sleeve corresponding to the plug-in pin, and the sealing ring is hollow inside.

[0007] Preferably, the plug-in pin is movably inserted into the limit sleeve, and the plug-in pin and the limit sleeve are collinear at the center.

[0008] Preferably, a positioning pin shaft is arranged between adjacent plug-in assemblies, and the positioning pin shaft is fixedly installed on the corresponding side of the valve body and the upper valve cover.

[0009] Preferably, the corresponding sides of the valve body and the upper valve cover are provided with hole grooves for inserting the inserting assembly.

[0010] Preferably, the limiting sleeve is provided with through holes for inserting limiting balls.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The stainless steel gate valve convenient to disassemble, by adopting the inserting assembly, the valve body and the pipeline connecting components are connected, when the valve body and the pipeline are connected, the sliding sleeve is pulled, the distance between the inserting pin and the sliding sleeve is increased, at this time, the limiting ball is clamped into the accommodation groove, the position of the limiting convex and the limiting ball is staggered; in this state, the inserting pin can be inserted; after the sliding sleeve is loosened, the sliding sleeve is gradually slid to the limiting sleeve by the elastic action of the reset spring, the distance between the inserting pin and the sliding sleeve is reduced, at this time, the position of the limiting convex in the sliding sleeve and the limiting ball is corresponding, the position of the limiting ball is limited by the limiting convex, so that the position of the inserting pin is limited by the limiting ball, without the aid of bolts and nuts, the installation and dismounting efficiency is high, the operation is convenient, and the maintenance is easy. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a front view schematic view of the utility model;

[0015] Figure 3 It is a side view schematic view of the utility model;

[0016] Figure 4 It is a structural schematic view of the inserting assembly of the utility model;

[0017] Figure 5 It is a half cut structure schematic view of the inserting assembly of the utility model.

[0018] In the drawing: 1, valve body; 2, handrail rod; 3, valve rod; 4, upper valve cover; 5, valve plate; 6, positioning pin shaft; 7, inserting assembly; 71, inserting pin; 72, limiting sleeve; 73, sliding sleeve; 74, sealing ring; 75, limiting convex; 76, accommodation groove; 77, limiting ball; 78, clamping groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0020] Embodiment: please refer to Figures 1-5 The present utility model provides a technical scheme: a stainless steel gate valve convenient to disassemble and assemble, mainly aiming at the gate valve and pipeline connection, its shortcoming is long-term use is not convenient to disassemble, maintain and replace, and the problem is improved. Including valve body 1, valve rod 3, valve plate 5 and upper valve cover 4, valve plate 5 is located at the lower end of valve rod 3, the upper end of valve body 1 is connected with upper valve cover 4 through plug-in assembly 7, valve rod 3 is fixedly installed on the upper end of upper valve cover 4, the upper end of valve rod 3 is fixedly installed with handrail 2, and handrail 2 can facilitate the operation of valve rod 3.

[0021] Please refer to Figure 1 And Figure 5 Among them, positioning pin shaft 6 is arranged between adjacent plug-in assemblies 7, and is fixedly installed on the corresponding side of valve body 1 and upper valve cover 4. The arrangement of positioning pin shaft 6 can make the connection part of valve body 1 correspond to the pipeline, and further improve the fixing effect of valve body 1 and the connecting part.

[0022] Please refer to Figure 1 , Figure 4 And Figure 5 Among them, the corresponding side of valve body 1 and upper valve cover 4 is provided with a hole slot for plug-in assembly 7. Plug-in assembly 7 includes plug-in pin 71 and limiting sleeve 72, plug-in pin 71 is movably plugged into limiting sleeve 72, and plug-in pin 71 and limiting sleeve 72 are coaxial.

[0023] Further, sealing ring 74 is embedded on the side of plug-in pin 71 corresponding to limiting sleeve 72, and the inside of sealing ring 74 is hollow. The material of sealing ring 74 is flexible rubber, and through the sealing ring 74 made of flexible rubber, the fixing of valve body 1 and the connecting part is more stable.

[0024] Among them, limiting sleeve 72 is installed on valve body 1 through screws, plug-in pin 71 is movably plugged into limiting sleeve 72, limiting sleeve 72 is movably sleeved with sliding sleeve 73 on the outside, sliding sleeve 73 is provided with a let-in slot 76 corresponding to limiting sleeve 72, a limiting boss 75 is arranged on the right side of let-in slot 76, a return spring 79 is arranged on the inside of sliding sleeve 73, the return spring 79 is movably sleeved with limiting sleeve 72, and the return spring 79 is arranged between limiting sleeve 72 and sliding sleeve 73.

[0025] Further, the limiting convex 75 is provided with a limiting ball 77 inside, the plug-in pin 71 is provided with a clamping groove 78 for placing the limiting ball 77, and the limiting ball 77 is annularly embedded on the plug-in pin 71. The reset spring 79 is arranged on the right side of the limiting ball 77, and the limiting ball 77 is arranged inside the limiting sleeve 72. The limiting sleeve 72 is provided with a through hole for the limiting ball 77 to pass through. Through the arrangement of the reset spring 79, in the initial state, the limiting convex 75 inside the sliding sleeve 73 corresponds to the inner and outer positions of the limiting ball 77, at this time, the plug-in pin 71 is not convenient to insert; in the process of inserting the plug-in pin 71, by pulling the sliding sleeve 73, the distance between the plug-in pin 71 and the sliding sleeve 73 is increased, at this time, the limiting ball 77 is clamped into the accommodation groove 76, and the inner and outer positions of the limiting convex 75 and the limiting ball 77 are staggered; in this state, the plug-in pin 71 can be conveniently inserted.

[0026] Working principle: the stainless steel gate valve convenient to disassemble, when installing, the positioning pin shaft 6 on the valve body 1 is inserted into the corresponding connecting part, through the positioning of the positioning pin shaft 6, the fixing effect of the valve body 1 can be further improved; when the plug-in assembly 7 is used, first, the limiting sleeve 72 is fixed on the valve body 1 through a screw; secondly, the plug-in pin 71 is inserted into one side of the limiting sleeve 72, in the process of inserting the plug-in pin 71, by pulling the sliding sleeve 73, the distance between the plug-in pin 71 and the sliding sleeve 73 is increased, at this time, the limiting ball 77 is clamped into the accommodation groove 76, and the inner and outer positions of the limiting convex 75 and the limiting ball 77 are staggered; in this state, the plug-in pin 71 can be conveniently inserted; after insertion, through the elastic action of the reset spring 79, the sliding sleeve 73 gradually slides towards the limiting sleeve 72, the distance between the plug-in pin 71 and the sliding sleeve 73 is reduced, at this time, the limiting convex 75 inside the sliding sleeve 73 corresponds to the inner and outer positions of the limiting ball 77, the position of the limiting ball 77 can be limited through the limiting convex 75, so that the position of the plug-in pin 71 can be limited through the limiting ball 77; when the valve body 1 is disassembled from the pipeline, only the inner and outer positions of the accommodation groove 76 and the limiting ball 77 are corresponded, the limiting ball 77 is accommodated through the accommodation groove 76, the plug-in pin 71 can be easily disassembled, so that the valve body 1 can be conveniently disassembled.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stainless steel gate valve convenient to disassemble, comprising a valve body (1), a valve rod (3), a valve plate (5) and an upper valve cover (4), the valve plate (5) is arranged at the lower end of the valve rod (3), characterized in that: The upper end of the valve body (1) is connected with the upper valve cover (4) through the plug-in assembly (7), the valve rod (3) is fixedly installed on the upper end of the upper valve cover (4), the upper end of the valve rod (3) is fixedly installed with the handrail rod (2), the plug-in assembly (7) comprises a plug-in pin (71) and a limiting sleeve (72), the limiting sleeve (72) is installed on the valve body (1) through a screw, the plug-in pin (71) is movably plugged into the limiting sleeve (72), the outer side of the limiting sleeve (72) movably sleeves the sliding sleeve (73), the sliding sleeve (73) is provided with a gap slot (76) corresponding to the limiting sleeve (72), the right side of the gap slot (76) is provided with a limiting boss (75), the inner side of the sliding sleeve (73) is provided with a return spring (79), the return spring (79) is movably sleeved on the limiting sleeve (72), and the return spring (79) is arranged between the limiting sleeve (72) and the sliding sleeve (73), the inner side of the limiting boss (75) is provided with a limiting ball (77), the plug-in pin (71) is provided with a clamping groove (78) for placing the limiting ball (77), and the limiting ball (77) is annularly embedded on the plug-in pin (71).

2. The stainless steel gate valve according to claim 1, wherein: The return spring (79) is arranged on the right side of the limiting ball (77), and the limiting ball (77) is arranged on the inner side of the limiting sleeve (72).

3. The easy to disassemble stainless steel gate valve according to claim 1, characterized in that: The plug-in pin (71) is embedded with a sealing ring (74) on one side corresponding to the limiting sleeve (72), and the sealing ring (74) is hollow inside.

4. The easy to disassemble stainless steel gate valve according to claim 1, characterized in that: The plug-in pin (71) is movably plugged into the limiting sleeve (72), and the plug-in pin (71) and the limiting sleeve (72) are collinear.

5. The easy to disassemble stainless steel gate valve according to claim 1, characterized in that: Positioning pins (6) are arranged between adjacent plug-in assemblies (7), and the positioning pins (6) are fixedly installed on the corresponding sides of the valve body (1) and the upper valve cover (4).

6. The easy to disassemble stainless steel gate valve according to claim 1, characterized in that: Corresponding sides of the valve body (1) and the upper valve cover (4) are provided with hole grooves for plug-in assembly (7) plug-in.

7. The easy to disassemble stainless steel gate valve according to claim 1, characterized in that: The limiting sleeve (72) is provided with a through hole for the limiting ball (77) to pass through.

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