A replaceable safety valve disc

Abstract

The utility model relates to the technical field of safety valve core, concretely is an easy to replace safety valve core, including the valve core body, the outside wall sliding connection of valve core body has the lock sleeve. The utility model installs the valve core to pull out the connecting rod to the outside and drive the locking rod to move right, spring two are compressed, insert the lock sleeve into the valve cover and press in, loosen the connecting rod, when the lock sleeve is completely inserted into the valve cover, the locking hole and the position of locking rod are opposite, spring two elongation drive the locking rod to insert the locking hole automatically with lock sleeve and valve core body locking, fix the valve cover on the valve body and complete the installation of valve core, need to replace the valve core only need to take off the valve cover, pull out the connecting rod to the outside and drive the locking rod to leave the locking hole, can remove the lock of lock sleeve, can pull out lock sleeve and valve core body and repeat the above-mentioned installation valve core's operation, need not to take down the whole valve, simple operation reduces the situation that other components appear damage, save time and effort, bring the convenience to the use of safety valve.

Description

Technical Field

[0001] This utility model relates to the field of safety valve core technology, specifically to an easily replaceable safety valve core. Background Technology

[0002] Safety valves are critical safety components in industrial pipelines, pressure vessels, and other equipment. Their core function is to automatically open and release pressure when the system pressure exceeds a set value, protecting equipment and personnel. The valve core, as the core component of the safety valve, directly affects its sealing performance, pressure relief accuracy, and service life. During long-term use, the valve core is prone to sealing failure or inaccurate pressure relief due to media corrosion, wear, and blockage by impurities, requiring regular replacement and maintenance.

[0003] Traditional safety valves typically have their valve cores located at the bottom of the valve seat. Replacing them requires completely removing the valve from the system and disassembling numerous components such as the valve cover and valve stem. This process is cumbersome and time-consuming. Furthermore, the disassembly and installation process can easily damage other components of the safety valve (such as the valve seat and sealing surface), affecting the overall performance and service life of the safety valve and causing inconvenience in its use. Therefore, a safety valve core that is easy to replace is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an easily replaceable safety valve core to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an easily replaceable safety valve core, comprising a valve core body, a locking sleeve slidably connected to the outer wall of the valve core body, a spring fixedly connected between the top of the valve core body and the inner top wall of the locking sleeve, a valve cover slidably connected to the outer wall of the locking sleeve, a valve body connected to the bottom of the valve cover via a flange, a lower sealing element fixedly connected to the bottom of the inner wall of the valve body, an upper sealing element fixedly connected to the lower surface of the valve core body, the outer wall of the lower sealing element matching the shape of the inner wall of the upper sealing element, a pressure relief port communicating with the bottom of the outer wall of the valve body, a locking hole provided at the lower part of the right side wall of the locking sleeve, a sleeve fixedly connected to the lower part of the right side wall of the valve cover, a locking rod slidably connected to the inner wall of the sleeve, the locking rod slidably connected to the valve cover, a spring fixedly connected between the right side wall of the locking rod and the inner right side wall of the sleeve, a connecting rod fixedly connected to the right side wall of the locking rod, and the connecting rod slidably connected to the sleeve.

[0006] As a further preferred embodiment of this technical solution: a pull ring is fixedly connected to the right side of the outer side wall of the connecting rod.

[0007] As a further preferred embodiment of this technical solution: a sealing groove is provided at the bottom of the outer side wall of the valve core, and a rubber sealing ring is bonded to the inner side wall of the sealing groove.

[0008] As a further preferred embodiment of this technical solution, the rubber sealing ring is made of fluororubber.

[0009] As a further preferred embodiment of this technical solution, the outer side wall of the lock sleeve is symmetrically and fixedly connected with two positioning strips.

[0010] As a further preferred embodiment of this technical solution: two positioning grooves are symmetrically formed on the inner sidewall of the valve cover, and the positioning strip is slidably connected to the positioning grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When installing the valve core, pulling the connecting rod outward moves the locking rod to the right, compressing the second spring. This inserts the locking sleeve into the valve cover and presses it in. Releasing the connecting rod, when the locking sleeve is fully inserted into the valve cover, the locking hole and the locking rod are aligned. The second spring extends, causing the locking rod to automatically insert into the locking hole, locking the locking sleeve and the valve core body. This fixes the valve cover onto the valve body, completing the valve core installation. When the valve core needs to be replaced, simply remove the valve cover, pull the connecting rod outward to move the locking rod away from the locking hole, and the locking sleeve will be released. The locking sleeve and valve core body can then be pulled out, and the valve core installation operation can be repeated. There is no need to disassemble the entire valve, simplifying the operation, reducing the risk of damage to other components, saving time and effort, and bringing convenience to the use of safety valves. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the valve core and locking sleeve in this utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 In this utility model Figure 3 Enlarged view of the structure of area A;

[0017] Figure 5 In this utility model Figure 3 Enlarged view of the structure of area B;

[0018] Figure 6 This is a schematic diagram of the structure of the valve cover and the positioning groove in this utility model.

[0019] In the picture:

[0020] 1. Valve core body; 2. Locking sleeve; 3. Spring 1; 4. Positioning bar; 5. Valve cover; 6. Valve body; 7. Lower seal; 8. Upper seal; 9. Pressure relief port; 10. Locking hole; 11. Locking rod; 12. Sleeve; 13. Spring 2; 14. Connecting rod; 15. Pull ring; 16. Sealing groove; 17. Rubber sealing ring; 18. Positioning groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Please see Figure 1-6This utility model provides a technical solution: an easily replaceable safety valve core, comprising a valve core body 1, a locking sleeve 2 slidably connected to the outer wall of the valve core body 1, a spring 3 fixedly connected between the top of the valve core body 1 and the inner top wall of the locking sleeve 2, a valve cover 5 slidably connected to the outer wall of the locking sleeve 2, a valve body 6 connected to the bottom of the valve cover 5 via a flange, a lower sealing element 7 fixedly connected to the bottom of the inner wall of the valve body 6, and an upper sealing element 8 fixedly connected to the lower surface of the valve core body 1, wherein the outer wall of the lower sealing element 7 matches the shape of the inner wall of the upper sealing element 8. A pressure relief port 9 is connected to the bottom of the outer side wall of the valve body 6. A locking hole 10 is opened at the lower part of the right side wall of the locking sleeve 2. A sleeve 12 is fixedly connected to the lower part of the right side wall of the valve cover 5. A locking rod 11 is slidably connected to the inner side wall of the sleeve 12. The locking rod 11 is slidably connected to the valve cover 5. A spring 13 is fixedly connected between the right side wall of the locking rod 11 and the inner right side wall of the sleeve 12. A connecting rod 14 is fixedly connected to the right side wall of the locking rod 11. The connecting rod 14 is slidably connected to the sleeve 12. When installing the valve core, pulling the connecting rod 14 outward will drive the locking rod 11 to... Moving to the right, spring 13 is compressed, inserting the locking sleeve 2 into the valve cover 5 and pressing it in. Releasing connecting rod 14, when the locking sleeve 2 is fully inserted into the valve cover 5, the locking hole 10 and locking rod 11 are aligned. Spring 13 extends, causing the locking rod 11 to automatically insert into the locking hole 10, locking the locking sleeve 2 and valve core 1, thus fixing the valve cover 5 onto the valve body 6 and completing the valve core installation. At this time, the upper seal 8 and lower seal 7 are in contact to complete the seal and prevent media leakage. When the system pressure increases, the valve core 1 is pressed upwards, exposing the pressure relief port 9, and spring 13 is... When the system is compressed, some of the medium is discharged through the pressure relief port 9 to complete the pressure relief. When the system pressure returns to normal, the spring 3 extends and pushes the valve core 1 down to block the pressure relief port 9, thus closing the safety valve. When the valve core needs to be replaced, simply remove the valve cover 5, pull the connecting rod 14 outward to move the locking rod 11 away from the locking hole 10, and the locking sleeve 2 can be released. The locking sleeve 2 and the valve core 1 can be pulled out and the above valve core installation operation can be repeated. There is no need to disassemble the entire valve. The operation is simple, reduces the possibility of damage to other parts, saves time and effort, and brings convenience to the use of the safety valve.

[0024] In this embodiment, specifically: a pull ring 15 is fixedly connected to the right side of the outer side wall of the connecting rod 14; this facilitates pulling the connecting rod 14.

[0025] In this embodiment, specifically: a sealing groove 16 is provided at the bottom of the outer side wall of the valve core body 1, and a rubber sealing ring 17 is bonded to the inner side wall of the sealing groove 16; when the valve core body 1 is inserted into the valve body 6 during valve core installation, the rubber sealing ring 17 is deformed under pressure to fill the gap between the valve core body 1 and the valve body 6, thereby improving the sealing effect and reducing media leakage.

[0026] In this embodiment, specifically: the rubber sealing ring 17 is made of fluororubber; by taking advantage of the oil resistance, high temperature resistance, elasticity and resilience of fluororubber, the sealing effect can be improved and the durability of the valve core 1 can be increased.

[0027] In this embodiment, specifically: two positioning strips 4 are symmetrically fixedly connected to the outer side wall of the lock sleeve 2; this facilitates the positioning strips 4 to move synchronously with the lock sleeve 2.

[0028] In this embodiment, specifically: two positioning grooves 18 are symmetrically opened on the inner side wall of the valve cover 5, and the positioning strip 4 is slidably connected to the positioning groove 18; when the valve core is installed and the locking sleeve 2 is inserted into the valve cover 5, the positioning strip 4 is aligned with the positioning groove 18 and inserted to activate the precise positioning effect of the locking sleeve 2, so as to avoid the locking sleeve 2 rotating in the valve cover 5 and causing the relative position of the locking hole 10 and the locking rod 11 to shift.

[0029] The working principle of this utility model is as follows: When installing the valve core, pulling the connecting rod 14 outward causes the locking rod 11 to move to the right, compressing the spring 13, inserting the locking sleeve 2 into the valve cover 5 and pressing it in. Releasing the connecting rod 14, when the locking sleeve 2 is fully inserted into the valve cover 5, the locking hole 10 and the locking rod 11 are aligned. The spring 13 extends, causing the locking rod 11 to automatically insert into the locking hole 10, locking the locking sleeve 2 and the valve core body 1, thus fixing the valve cover 5 onto the valve body 6 and completing the valve core installation. At this time, the upper sealing element 8 and the lower sealing element 7 fit together to complete the seal and prevent medium leakage. When the system pressure increases, the valve core body 1 is compressed and... When the pressure relief port 9 is exposed by lifting it upwards, the spring 3 is compressed, and some of the medium is discharged along the pressure relief port 9 to complete the pressure relief. When the system pressure returns to normal, the spring 3 extends and pushes the valve core 1 downwards to block the pressure relief port 9, thus closing the safety valve. When the valve core needs to be replaced, simply remove the valve cover 5, pull the connecting rod 14 outwards to drive the locking rod 11 away from the locking hole 10, and the locking of the locking sleeve 2 can be released. The locking sleeve 2 and the valve core 1 can be pulled out and the above operation of installing the valve core can be repeated. There is no need to disassemble the entire valve. The operation is simple, reduces the possibility of damage to other parts, saves time and effort, and brings convenience to the use of the safety valve.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable safety valve core, characterized in that: The valve core (1) includes a valve core body (1), a locking sleeve (2) slidably connected to the outer wall of the valve core body (1), a spring (3) fixedly connected between the top of the valve core body (1) and the inner top wall of the locking sleeve (2), a valve cover (5) slidably connected to the outer wall of the locking sleeve (2), a valve body (6) connected to the bottom of the valve cover (5) via a flange, a lower seal (7) fixedly connected to the bottom of the inner wall of the valve body (6), an upper seal (8) fixedly connected to the lower surface of the valve core body (1), the outer wall of the lower seal (7) matching the shape of the inner wall of the upper seal (8), and the valve body ( The bottom of the outer side wall of the 6) is connected to a pressure relief port (9). The lower part of the right side wall of the lock sleeve (2) is provided with a locking hole (10). The lower part of the right side wall of the valve cover (5) is fixedly connected to a sleeve (12). The inner side wall of the sleeve (12) is slidably connected to a locking rod (11). The locking rod (11) is slidably connected to the valve cover (5). The right side wall of the locking rod (11) and the inner right side wall of the sleeve (12) are fixedly connected to a spring (13). The right side wall of the locking rod (11) is fixedly connected to a connecting rod (14). The connecting rod (14) is slidably connected to the sleeve (12).

2. The easily replaceable safety valve core according to claim 1, characterized in that: A pull ring (15) is fixedly connected to the right side of the outer wall of the connecting rod (14).

3. The replaceable safety valve core according to claim 2, characterized in that: A sealing groove (16) is provided at the bottom of the outer side wall of the valve core (1), and a rubber sealing ring (17) is bonded to the inner side wall of the sealing groove (16).

4. The replaceable safety valve core according to claim 3, characterized in that: The rubber sealing ring (17) is made of fluororubber.

5. The replaceable safety valve core according to claim 4, characterized in that: The outer side wall of the lock sleeve (2) is symmetrically fixedly connected with two positioning strips (4).

6. The replaceable safety valve core according to claim 5, characterized in that: The valve cover (5) has two symmetrically arranged positioning grooves (18) on its inner sidewall, and the positioning strip (4) is slidably connected to the positioning grooves (18).

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