Angle valve protection device

Abstract

The utility model belongs to the technical field of gasification devices, and discloses an angle valve protection device which comprises a valve body, a valve rod, a plurality of sealing rings, a pressing sleeve and a valve element. The valve rod is fixedly connected to the output part of the valve body; the sealing ring is of a V-shaped packing structure, a V-shaped opening of the sealing ring faces the medium pressure side, and the sealing ring is located between the valve body and the valve rod. The pressing sleeve abuts against the bottom end face of the sealing ring and is used for fixing the sealing ring between the valve body and the valve rod. The V-shaped structure of the sealing ring is good in sealing performance, the V-shaped opening of the sealing ring faces the medium pressure side, the larger the medium pressure is, the tighter the padding and the valve rod are attached, the mode that the multiple sealing rings are combined is adopted, the sealing performance is more reliable, media cannot enter a valve rod cavity, and the valve rod is effectively prevented from being locked. After the valve rod and the valve element are firmly connected, a positioning pin is arranged to prevent the valve element and the valve rod from loosening and falling off in the using process of the angle valve.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gasification device, specifically relates to a valve protector. BACKGROUND

[0002] The valve on the gasification device generally adopts upside down, in actual use, due to the valve being in upside down state, medium particles are more easily accumulated near the valve rod cavity, such as Figure 1 As shown, the prior art adopts two groups of graphite packing to prevent dust, the graphite packing can only play a dustproof role and cannot completely block and isolate the medium. Therefore, after the valve is used for a period of time, due to the low hardness of the valve rod, the graphite packing is abraded after the surface of the valve rod is scratched, medium particles enter the valve rod cavity, and the valve rod and the stuffing box are locked. SUMMARY

[0003] To solve the above technical problems, the utility model provides a valve protector, which aims to solve the technical problems that the prior art cannot completely block and isolate the medium and medium particles easily enter the valve rod cavity, causing the valve rod and the stuffing box to be locked.

[0004] The technical scheme of the utility model is as follows: a valve protector, comprising a valve body, a valve rod, a plurality of sealing rings, a pressing sleeve and a valve core, the valve body has an output part; the valve rod is fixedly connected to the output part of the valve body;

[0005] The sealing ring is a V-shaped packing structure, the V-shaped opening of the sealing ring faces the medium pressure side, and the sealing ring is located between the valve body and the valve rod;

[0006] The pressing sleeve abuts against the bottom end face of the sealing ring and is used for fixing the sealing ring between the valve body and the valve rod;

[0007] The valve core is fixed to the bottom of the valve rod through a positioning pin, and the valve core is internally provided with a structure for connecting with the bottom of the valve rod.

[0008] In some embodiments, the middle part of the valve body is provided with a valve rod cavity, and the valve rod is rotatably connected in the valve rod cavity.

[0009] In some embodiments, the valve body is provided with a dustproof groove, and the sealing ring is located in the interior of the dustproof groove.

[0010] In some embodiments, the bottom of the interior of the valve body is provided with a containing groove, the bottom of the dustproof groove is in communication with the top of the containing groove, and the pressing sleeve is located in the interior of the containing groove.

[0011] In some embodiments, the inner wall of the pressing sleeve is provided with an internal thread part, the outer surface of the valve rod is provided with an external thread part, the internal thread part is matched with the external thread part, and the pressing sleeve is detachably fixed on the valve rod.

[0012] In some embodiments, the valve core is provided with a connecting sleeve, the connecting sleeve has a socket in the middle, and the bottom of the valve stem is inserted into the socket.

[0013] In some embodiments, the outer surface of the connecting sleeve is provided with at least one positioning hole, and the valve stem is provided with at least one locking hole corresponding to the positioning hole. The positioning pin is inserted into the positioning hole and the locking hole to fix the valve core to the valve stem.

[0014] In some embodiments, the valve core has a threaded hole inside, the top of the threaded hole is connected to the insertion hole, and the bottom of the valve stem is threaded into the threaded hole.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] 1. In this application, the V-shaped structure of the sealing ring provides excellent sealing performance. Its V-shaped opening faces the medium pressure side; the higher the medium pressure, the tighter the packing fits the valve stem. The use of multiple sealing rings in combination further enhances the sealing performance, preventing the medium from entering the valve stem cavity and effectively preventing the valve stem from seizing. After the valve stem and valve core are securely connected, a locating pin is installed to prevent the valve core and valve stem from loosening and falling off during use.

[0017] 2. The locating pin is inserted into the locating hole and the locking hole to fix the valve core to the valve stem. The locating pin effectively prevents the valve core from loosening or falling off due to medium pressure or mechanical stress during the use of the angle valve, improving the stability and reliability of the angle valve. At the same time, the installation and removal of the locating pin are very convenient, facilitating the maintenance and upkeep of the angle valve. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the existing technology structure;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection between the valve body and the valve stem of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection between the valve stem and the valve core of this utility model.

[0023] In the drawings:

[0024] 100, valve body; 110, valve rod cavity; 120, dustproof groove; 130, accommodating groove; 200, valve rod; 210, locking hole; 300, sealing ring; 400, pressing sleeve; 500, valve core; 510, connecting sleeve; 520, insertion hole; 530, positioning hole; 540, threaded hole; 600, positioning pin. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0027] Specifically:

[0028] Please refer to Figure 2 , Figure 3 and Figure 4 , a kind of angle valve protection device, including valve body 100, valve rod 200, sealing ring 300, pressing sleeve 400 and valve core 500, valve body 100 it has a output part;Valve rod 200 is fixedly connected on the output part of valve body 100;

[0029] Multiple sealing rings 300 are V-shaped packing structures, and the V-shaped opening of the multiple sealing rings 300 faces the medium pressure side, and the sealing ring 300 is located between the valve body 100 and the valve rod 200;

[0030] The pressing sleeve 400 abuts against the bottom end face of the sealing ring 300, for fixing the sealing ring 300 between the valve body 100 and the valve rod 200;

[0031] The valve core 500 is fixed at the bottom of the valve rod 200 by the positioning pin 600, and the valve core 500 is internally provided with a structure for connecting with the bottom of the valve rod 200.The V-shaped structure of the sealing ring 300 has good sealing performance, and the V-shaped opening thereof faces the medium pressure side, the greater the medium pressure, the tighter the packing and the valve rod 200 are combined, and the sealing performance is more reliable in the combined mode of multiple sealing rings 300, the medium cannot enter the valve rod cavity 110, and the valve rod 200 is effectively prevented from being locked.The valve rod 200 and the valve core 500 are firmly connected, and then the positioning pin 600 is struck, to prevent the valve core 500 and the valve rod 200 from loosening and falling off during use of the angle valve.

[0032] In some embodiments, the middle part of the valve body 100 is provided with a valve stem cavity 110, and the valve stem 200 is rotationally connected in the valve stem cavity 110 to realize the opening and closing functions of the angle valve. The valve stem cavity 110 also plays a certain supporting and guiding role for the valve stem 200, ensuring the stability of the valve stem 200 during rotation.

[0033] In some embodiments, the valve body 100 is provided with a dustproof groove 120, and a plurality of sealing rings 300 are located inside the dustproof groove 120. The plurality of sealing rings 300 are used in combination to form a multiple sealing barrier, effectively preventing medium particles and dust and other impurities from entering the valve stem cavity 110, and improving the sealing performance of the angle valve.

[0034] In some embodiments, the bottom part inside the valve body 100 is provided with a containing groove 130, the bottom part of the dustproof groove 120 is in communication with the top part of the containing groove 130, and a pressing sleeve 400 is located inside the containing groove 130. The pressing sleeve 400 can tightly abut against the bottom end face of the sealing ring 300, firmly fixing the sealing ring 300 between the valve body 100 and the valve stem 200, ensuring that the sealing ring 300 will not loosen or fall off during the use of the angle valve due to medium pressure or mechanical stress, and further improving the sealing performance and stability of the angle valve.

[0035] In some embodiments, the inner wall of the pressing sleeve 400 is provided with an internal thread part, the outer surface of the valve stem 200 is provided with an external thread part, and the internal thread part cooperates with the external thread part to detachably fix the pressing sleeve 400 on the valve stem 200, realizing the detachable connection between the pressing sleeve 400 and the valve stem 200. During the use of the angle valve, this detachable connection makes the pressing sleeve 400 and the valve stem 200 easier to maintain and replace, reducing maintenance cost and time.

[0036] In some embodiments, the valve core 500 is provided with a connecting sleeve 510, the middle part of the connecting sleeve 510 is provided with a insertion hole 520, and the bottom part of the valve stem 500 is inserted into the insertion hole 520 to realize the accurate positioning between the valve core 500 and the valve stem 200.

[0037] In some embodiments, the outer surface of the connecting sleeve 510 is provided with at least one positioning hole 530, the valve stem 200 is provided with at least one locking hole 210 corresponding to the positioning hole 530, and a positioning pin 600 is inserted into the positioning hole 530 and the locking hole 210 to fix the valve core 500 on the valve stem 200. The positioning pin 600 inserted into the positioning hole 530 and the locking hole 210 effectively prevents the valve core 500 from loosening or falling off during the use of the angle valve due to medium pressure or mechanical stress, improving the stability and reliability of the angle valve. At the same time, the positioning pin 600 is very convenient to install and disassemble, facilitating the maintenance and maintenance of the angle valve.

[0038] In some embodiments, the inner part of the valve core 500 is provided with a threaded hole 540, the top of the threaded hole 540 is communicated with the insertion hole 520, and the bottom of the valve rod 200 is threadedly connected in the threaded hole 540, so that the connection between the valve core 500 and the valve rod 200 is firm.

[0039] It should be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present application have been shown and described, it should be understood 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 protective device for an angle valve, characterized in that, include: Valve body (100) having an output section; The valve stem (200) is fixedly connected to the output part of the valve body (100); Multiple sealing rings (300) are V-shaped packing structures with the V-shaped opening facing the medium pressure side and located between the valve body (100) and the valve stem (200); The pressure sleeve (400) abuts against the bottom end face of the sealing ring (300) and is used to fix the sealing ring (300) between the valve body (100) and the valve stem (200); The valve core (500) is fixed to the bottom of the valve stem (200) by a positioning pin (600), and the valve core (500) has a structure inside for connecting with the bottom of the valve stem (200).

2. The angle valve protection device as described in claim 1, characterized in that, The valve body (100) has a valve stem cavity (110) in the middle, and the valve stem (200) is rotatably connected in the valve stem cavity (110).

3. The angle valve protection device as described in claim 2, characterized in that, The valve body (100) is provided with a dustproof groove (120), and a plurality of the sealing rings (300) are located inside the dustproof groove (120).

4. The angle valve protection device as described in claim 3, characterized in that, The valve body (100) has a receiving groove (130) at its bottom, the bottom of the dustproof groove (120) is connected to the top of the receiving groove (130), and the pressure sleeve (400) is located inside the receiving groove (130).

5. The angle valve protection device as described in claim 4, characterized in that, The inner wall of the pressure sleeve (400) is provided with an internal thread, and the outer surface of the valve stem (200) is provided with an external thread. The internal thread and the external thread cooperate to detachably fix the pressure sleeve (400) to the valve stem (200).

6. The angle valve protection device as described in claim 5, characterized in that, The valve core (500) is provided with a connecting sleeve (510), and the connecting sleeve (510) has a socket (520) in the middle, and the bottom of the valve stem (200) is inserted into the socket (520).

7. The angle valve protection device as described in claim 6, characterized in that, The outer surface of the connecting sleeve (510) is provided with at least one positioning hole (530), and the valve stem (200) is provided with at least one locking hole (210) corresponding to the positioning hole (530). The positioning pin (600) is inserted into the positioning hole (530) and the locking hole (210) to fix the valve core (500) on the valve stem (200).

8. The angle valve protection device as described in claim 7, characterized in that, The valve core (500) has a threaded hole (540) inside. The top of the threaded hole (540) is connected to the insertion hole (520), and the bottom of the valve stem (200) is threadedly connected to the threaded hole (540).

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