A safety valve with a valve stem built-in

Abstract

The utility model relates to safety valve technical field, concretely is a kind of safety valve of valve stem built-in, it mainly includes valve body, valve body one end is equipped with connecting pipe, further include: control mechanism, control mechanism is arranged in the inside of valve body, control mechanism includes the valve ball of movable installation in the inner wall of valve body, valve ball outer wall is fixedly installed with valve stem, adjusting mechanism is arranged in the inside of valve body. The spring of being set pushes and moves plastic gland, plastic gland drives sealing sleeve to move, in the plastic gland to sealing sleeve exert thrust, make the sealing groove of sealing sleeve bottom surface and the protrusion of valve body inner wall connect, protrusion and sealing groove inner wall close contact, and protrusion and sealing ring abut, since sealing groove and sealing ring are set to be oblique, make the sealing effect between protrusion and sealing groove and sealing ring better, the sealing frame of being set and sealing sleeve lower end inner wall form groove body, and with protrusion close contact, further seal protrusion, guarantee that valve body is not prone to leakage, improve sealing quality.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically a safety valve with an internal valve stem. Background Technology

[0002] A safety valve is a special valve whose opening and closing element is normally closed under external force. When the pressure of the medium in the equipment or pipeline rises above a specified value, it prevents the pressure of the medium in the pipeline or equipment from exceeding the specified value by discharging the medium to the outside of the system. Safety valves belong to the category of automatic valves and are mainly used in boilers, pressure vessels, and pipelines to control the pressure to not exceed the specified value. They play an important role in protecting personal safety and equipment operation. Safety valves with built-in valve stems have the valve stem placed inside the valve body, which optimizes the structural design of traditional safety valves, improves sealing performance, reliability, and ease of maintenance, and is suitable for harsh working conditions such as high pressure, high temperature, and corrosive media.

[0003] In the daily operation of a stem-embedded safety valve, its conventional sealing mechanism mainly relies on the tight contact between the bottom of the valve disc and a specific protruding part on the inner wall of the valve body to achieve the function of closing and sealing the valve body. However, this design has revealed certain limitations in actual application scenarios. Since this sealing method only relies on the contact between a single layer of the bottom of the valve disc and the protruding part of the valve body to form a seal, when there is a flowing medium inside the valve body, this relatively simple single-layer contact sealing structure is difficult to effectively resist the medium pressure, which can easily lead to leakage. This leakage problem will directly affect the sealing quality of the safety valve and reduce its reliability as a safety protection device. Utility Model Content

[0004] The purpose of this invention is to provide a safety valve with a built-in valve stem to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A safety valve with an integrated valve stem includes: a valve body, with a connecting pipe installed at one end of the valve body, and further includes:

[0007] The control mechanism is located inside the valve body. The control mechanism includes a valve ball that is movably installed on the inner wall of the valve body, a valve stem that is fixedly installed on the outer wall of the valve ball, and a handle that is installed on one end of the valve stem by a screw. The control mechanism is used to open and close the valve body.

[0008] The regulating mechanism is located inside the valve body. The regulating mechanism includes a sealing sleeve that is movably installed on the inner wall of the valve body. A gasket is installed on the side of the sealing sleeve, and a plastic cap is installed on the inner wall of one end of the sealing sleeve. The regulating mechanism is used for regulating and sealing the valve body.

[0009] Preferably, the outer wall of the valve stem is sealed to the inner wall of the valve body by O-ring two, and a pressure cap is installed at the other end of the valve body, which is sealed to the inner wall of one end of the valve body by O-ring four.

[0010] Preferably, a sealing seat is installed on the inner wall of the valve body, and a valve cap is installed at the other end of the valve body. A neoprene is installed on the inner wall of the valve cap and the inner wall of the valve body, and the outer wall of the neoprene is sealed to the inner wall of the valve cap by an O-ring.

[0011] Preferably, a cap is installed on the inner wall of one end of the valve cap, and the cap is sealed to the inner wall of the valve cap by an O-ring.

[0012] Preferably, a pull rod is movably installed on the inner wall of the plastic cap, one end of the pull rod is fixedly connected to the side of the sealing sleeve, a spring is movably installed on the outer wall of the pull rod, a plastic cap is installed on one end of the valve body, a pressure plate is installed on the inner wall of the plastic cap, and the two ends of the spring are fixedly connected to the side of the plastic cap and the side of the pressure plate, respectively.

[0013] Preferably, a handwheel is installed on the side of the plastic cap by two screws, and a top cover is installed on the inner wall of one end of the plastic cap by a retaining spring.

[0014] Preferably, a sealing groove is provided on the side of the sealing sleeve. The sealing groove is oblique in shape, and a sealing ring is fixedly installed on the inner wall of the sealing groove. The sealing ring fits into the sealing groove.

[0015] Preferably, a sealing frame is fixedly installed on the inner wall of the lower end of the sealing sleeve, and the outer wall of the sealing frame and the inner wall of the sealing sleeve form a groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention uses a spring to move a plastic cap, which in turn moves a sealing sleeve. The plastic cap applies a thrust to the sealing sleeve, causing the sealing groove on the bottom surface of the sealing sleeve to connect with a protrusion on the inner wall of the valve body. The protrusion is in close contact with the inner wall of the sealing groove and abuts against the sealing ring. Because the sealing groove and the sealing ring are angled, the sealing effect between the protrusion and the sealing groove and the sealing ring is better. The sealing frame forms a groove with the inner wall of the lower end of the sealing sleeve and is in close contact with the protrusion, further sealing the protrusion and ensuring that the valve body is not prone to leakage, thus improving the sealing quality.

[0018] The valve stem and valve ball can be adjusted by the handle, which allows for the active opening and closing of the valve body. In case of device failure, the valve body can be automatically closed for maintenance, improving the safety and flexibility of the device. The neopergillus filter disperses and buffers the fluid, ensuring that the fluid does not cause a large impact on the inner wall of the valve body, making the valve body less prone to damage and improving the quality and safety of the valve body. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is an exploded three-dimensional view of the present invention.

[0021] Figure 3 This is an exploded three-dimensional view of the sealing ring of this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional view of the sealing sleeve of this utility model.

[0023] In the picture:

[0024] 1. Valve body; 101. Connecting pipe;

[0025] 2. Control mechanism; 201. Sealing seat; 202. Valve ball; 203. Valve cap; 204. O-ring one; 205. Valve stem; 206. O-ring two; 207. Handle; 208. Newpert; 209. Cap; 210. O-ring three; 211. Screw one; 212. Pressure cap; 213. O-ring four;

[0026] 3. Adjustment mechanism; 301. Sealing sleeve; 302. Washer; 303. Plastic pressure cap; 304. Pull rod; 305. Spring; 306. Plastic cap; 307. Pressure plate; 308. Two screws; 309. Handwheel; 310. Snap ring; 311. Top cover; 312. Sealing groove; 313. Sealing frame; 314. Sealing ring. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] like Figures 1-4 As shown, this application provides a safety valve with a built-in valve stem, including: a valve body 1, with a connecting pipe 101 installed at one end of the valve body 1, and further including:

[0030] Control mechanism 2 is located inside valve body 1. Control mechanism 2 includes a valve ball 202 movably installed on the inner wall of valve body 1, a valve stem 205 fixedly installed on the outer wall of valve ball 202, and a handle 207 installed on one end of valve stem 205 by screw 211. Control mechanism 2 is used to open and close valve body 1.

[0031] Specifically, such as Figures 1-4 As shown, the outer wall of the valve stem 205 is sealed to the inner wall of the valve body 1 by O-ring 206. A pressure cap 212 is installed at the other end of the valve body 1, and the pressure cap 212 is sealed to the inner wall of one end of the valve body 1 by O-ring 213.

[0032] In this embodiment, the valve stem 205 is sealed by the O-ring 206 to ensure the quality of the valve body 1.

[0033] Specifically, such as Figures 1-4 As shown, a sealing seat 201 is installed on the inner wall of the valve body 1, and a valve cap 203 is installed on the other end of the valve body 1. A neoprene 208 is installed on the inner wall of the valve cap 203 and the inner wall of the valve body 1. The outer wall of the neoprene 208 is sealed to the inner wall of the valve cap 203 by an O-ring 204.

[0034] In this embodiment: the liquid is dispersed by the set Neoper 208, the impact force is reduced, the valve body 1 is not easily damaged, and the service life is improved.

[0035] Specifically, such as Figures 1-4 As shown, a cap 209 is installed on the inner wall of one end of the valve cap 203, and the cap 209 is sealed to the inner wall of the valve cap 203 by an O-ring 210.

[0036] In this embodiment, the O-ring 210 ensures a seal between the cap 209 and the valve cap 203, preventing leakage.

[0037] The adjusting mechanism 3 is located inside the valve body 1. The adjusting mechanism 3 includes a sealing sleeve 301 that is movably installed on the inner wall of the valve body 1. A gasket 302 is installed on the side of the sealing sleeve 301. A plastic cap 303 is installed on the inner wall of one end of the sealing sleeve 301. The adjusting mechanism 3 is used for adjusting and sealing the valve body 1.

[0038] Specifically, such as Figures 1-4 As shown, a pull rod 304 is movably installed on the inner wall of the plastic cap 303. One end of the pull rod 304 is fixedly connected to the side of the sealing sleeve 301. A spring 305 is movably installed on the outer wall of the pull rod 304. A plastic cap 306 is installed on one end of the valve body 1. A pressure plate 307 is installed on the inner wall of the plastic cap 306. The two ends of the spring 305 are fixedly connected to the side of the plastic cap 303 and the side of the pressure plate 307, respectively.

[0039] In this embodiment: the spring 305 applies elastic force to the plastic cap 303, and further applies thrust to the sealing sleeve 301 to ensure that the sealing sleeve 301 seals the valve body 1.

[0040] Specifically, such as Figures 1-4 As shown, a handwheel 309 is installed on the side of the plastic cap 306 by screw 308, and a top cover 311 is installed on the inner wall of one end of the plastic cap 306 by snap ring 310.

[0041] In this embodiment, the top cover 311 is fixed by the snap ring 310.

[0042] Specifically, such as Figures 1-4 As shown, a sealing groove 312 is provided on the side of the sealing sleeve 301. The sealing groove 312 is oblique. A sealing ring 314 is fixedly installed on the inner wall of the sealing groove 312. The sealing ring 314 fits into the sealing groove 312.

[0043] In this embodiment, the oblique shape of the sealing groove 312 and the sealing ring 314 further ensure the sealing between the sealing sleeve 301 and the protrusion inside the valve body 1.

[0044] Specifically, such as Figures 1-4 As shown, a sealing frame 313 is fixedly installed on the inner wall of the lower end of the sealing sleeve 301, and the outer wall of the sealing frame 313 and the inner wall of the sealing sleeve 301 form a groove.

[0045] In this embodiment: the outer wall of the sealing frame 313 and the inner wall of the sealing sleeve 301 form a groove, so that the sealing sleeve 301 and the inner wall protrusion of the valve body 1 are more tightly connected, thus forming a seal.

[0046] Specifically, when the valve body 1 is connected and in use, the spring 305 pushes the plastic cover 303 to move, which in turn moves the sealing sleeve 301. The plastic cover 303 applies a pushing force to the sealing sleeve 301, causing the sealing groove 312 on the bottom surface of the sealing sleeve 301 to connect with the protrusion on the inner wall of the valve body 1. The protrusion is in close contact with the inner wall of the sealing groove 312, and it also abuts against the sealing ring 314. Because both the sealing groove 312 and the sealing ring 314 are angled, the sealing effect between the protrusion and the sealing groove 312 and the sealing ring 314 is better. The sealing frame 313 and the sealing sleeve... A groove is formed on the lower inner wall of 301, which is in close contact with the protrusion to further seal the protrusion, ensuring that the valve body 1 is not prone to leakage and improving the sealing quality. The valve stem 205 and valve ball 202 can be rotated by the handle 207, so that the valve body 1 can be actively opened and closed. In case of device failure, the valve body 1 can be actively closed for maintenance, improving the safety and flexibility of the device. The new valve 208 disperses and buffers the fluid, ensuring that the fluid is not prone to causing large impacts on the inner wall of the valve body 1, making the valve body 1 less prone to damage and improving the quality and safety of the valve body 1.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0048] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safety valve with a built-in valve stem, comprising: A valve body (1), one end of which is fitted with a connecting pipe (101), characterized in that it further comprises: The control mechanism (2) is located inside the valve body (1). The control mechanism (2) includes a valve ball (202) movably installed on the inner wall of the valve body (1). A valve stem (205) is fixedly installed on the outer wall of the valve ball (202). A handle (207) is installed at one end of the valve stem (205) by a screw (211). The control mechanism (2) is used to open and close the valve body (1). The adjustment mechanism (3) is located inside the valve body (1). The adjustment mechanism (3) includes a sealing sleeve (301) that is movably installed on the inner wall of the valve body (1). A gasket (302) is installed on the side of the sealing sleeve (301). A plastic cap (303) is installed on the inner wall of one end of the sealing sleeve (301). The adjustment mechanism (3) is used for adjusting and sealing the valve body (1).

2. A safety valve with a built-in valve stem according to claim 1, characterized in that, The outer wall of the valve stem (205) is sealed to the inner wall of the valve body (1) by O-ring two (206), and a pressure cap (212) is installed at the other end of the valve body (1). The pressure cap (212) is sealed to the inner wall of one end of the valve body (1) by O-ring four (213).

3. A safety valve with a built-in valve stem according to claim 2, characterized in that, A sealing seat (201) is installed on the inner wall of the valve body (1), and a valve cap (203) is installed on the other end of the valve body (1). A neoprene (208) is installed on the inner wall of the valve cap (203) and the inner wall of the valve body (1). The outer wall of the neoprene (208) is sealed to the inner wall of the valve cap (203) by an O-ring (204).

4. A safety valve with a built-in valve stem according to claim 3, characterized in that, A cap (209) is installed on the inner wall of one end of the valve cap (203), and the cap (209) is sealed to the inner wall of the valve cap (203) by an O-ring (210).

5. A safety valve with a built-in valve stem according to claim 1, characterized in that, A pull rod (304) is movably installed on the inner wall of the plastic cap (303). One end of the pull rod (304) is fixedly connected to the side of the sealing sleeve (301). A spring (305) is movably installed on the outer wall of the pull rod (304). A plastic cap (306) is installed on one end of the valve body (1). A pressure plate (307) is installed on the inner wall of the plastic cap (306). The two ends of the spring (305) are fixedly connected to the side of the plastic cap (303) and the side of the pressure plate (307) respectively.

6. A safety valve with a built-in valve stem according to claim 5, characterized in that, A handwheel (309) is installed on the side of the plastic cap (306) by screw two (308), and a top cover (311) is installed on the inner wall of one end of the plastic cap (306) by a snap ring (310).

7. A safety valve with a built-in valve stem according to claim 6, characterized in that, The sealing sleeve (301) has a sealing groove (312) on its side. The sealing groove (312) is oblique. A sealing ring (314) is fixedly installed on the inner wall of the sealing groove (312). The sealing ring (314) fits into the sealing groove (312).

8. A safety valve with a built-in valve stem according to claim 7, characterized in that, A sealing frame (313) is fixedly installed on the inner wall of the lower end of the sealing sleeve (301), and the outer wall of the sealing frame (313) and the inner wall of the sealing sleeve (301) form a groove.

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