Safety valve with pressure maintaining performance

Abstract

The utility model discloses a safety valve with the pressure maintaining performance, and relates to the technical field of safety valves, the safety valve with the pressure maintaining performance comprises a guide pipe, the main body of the guide pipe is of a two-way through structure on the upper side and the lower side, and scales are arranged on the plane of the front end of a guide rod. Through the arrangement of the scales arranged at the front end of the peripheral surface of the guide rod, when the guide rod moves downwards to seal the sealing seat, an external operator can quickly judge whether the rebound degree of the current sealing end is in place or not according to the scales arranged at the front end of the peripheral surface of the guide rod at present; by means of the design, when the spring piece located at the bottom end of the sealing head is damaged, the cover plate can be manually held, the sealing head can be taken down from the interior of the guide pipe, the spring piece and other components are independently taken down and replaced, and by means of the design, when a single accessory is damaged, only the single accessory needs to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve with pressure-maintaining performance. Background Art

[0002] A safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline increases and exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The existing patent is a new type of safety valve, and the patent publication number is CN203717291U. The utility model discloses a new type of safety valve, including an air inlet joint, a valve body, a push rod, a sealing pad seat and a spring. A push rod base, an O-ring, an elastic gasket and a screw are provided at the lower end of the sealing pad seat. A mounting hole for mounting the push rod is provided in the middle of the upper end of the sealing pad seat. A spring is connected to the upper end of the sealing pad seat. An adjusting screw is provided at the upper end of the spring. At least two blind holes are provided around the adjusting screw. A nylon elastic member is provided in the blind hole. A push rod screw plug is provided at the upper end of the push rod. A nut is fixedly connected to the top thread of the upper end of the push rod. A protective cover is provided at the upper end of the push rod screw plug. Compared with the prior art, the utility model has an adjusting screw with a nylon elastic member and a valve body clamping structure arranged around it, so that the utility model is convenient for installation and processing, and is also convenient for adjustment, which greatly improves the production efficiency of the utility model.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: although nylon elastic parts can be used for sealing during use, due to the lack of an effective rebound indication structure, after long-term use, the spring parts will have a reduced elasticity and a reduced rebound force, which will in turn lead to a reduction in sealing performance, thus causing the safety valve to fail. Therefore, we propose a safety valve with pressure-maintaining performance to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a safety valve with pressure-maintaining performance, which solves the problem that, due to the lack of an effective rebound indication structure during use, the spring part will cause the rebound force to decrease due to reduced elasticity after long-term use, which will in turn cause the sealing performance to decrease, thus causing the safety valve to fail.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a safety valve with pressure-maintaining performance, including a conduit, the main body of the conduit is a two-way through structure on the upper and lower sides, and a thread is provided on the top of the inner wall of the conduit, and a connecting disk is fixedly connected to the bottom end surface of the conduit, the connecting disk is a thin-upper-thick-lower structure, and the connecting disk is connected to the bottom end opening of the conduit and is used to close the bottom end opening of the conduit, and an opening is provided on the bottom end surface of the connecting disk, and a through hole is provided in a circular array inside the connecting disk, and the through hole is a mounting hole, and the mounting hole is used to connect a fixing bolt.

[0006] Preferably, a through hole is opened at the right end of the outer peripheral surface of the catheter, a shunt pipe is inserted into the through hole, the shunt pipe and the catheter are connected, and a connecting plate is fixedly connected to the side of the shunt pipe away from the catheter, and a sealing seat is fixedly connected to the inner bottom end surface of the connecting plate.

[0007] Preferably, the main body of the sealing seat is a two-way through structure on the upper and lower sides, and the sealing seat is magnetic. An annular groove is provided on the top surface of the sealing seat, and the annular groove is a sealing groove. The sealing groove and the sealing seat together constitute a closed structure for the bottom opening of the connecting disk, and the diameter of the sealing seat is larger than the diameter of the through hole opened in the connecting disk.

[0008] Preferably, a longitudinal groove is provided on the inner wall of the sealing seat, and the longitudinal groove is a guide groove. There are four guide grooves in total, and the four guide grooves are provided on the inner wall of the sealing seat in a circular array. The sealing seat and the guide grooves together constitute a guide structure.

[0009] Preferably, a cover plate is installed at the top end of the conduit, and grooves are provided in a circular array on the outer circumference of the cover plate, and a sealing head is fixedly connected to the bottom end surface of the cover plate, and threads are also provided on the outer circumference of the sealing head, and through holes that penetrate in both directions on the upper and lower sides are provided inside the cover plate and the sealing head.

[0010] Preferably, a guide rod is inserted into the through holes in the cover plate and the sealing head, the main body of the guide rod is a cylindrical structure, and a plane is provided at the front end of the outer circumferential surface of the guide rod, and a scale is arranged on the plane.

[0011] Preferably, a mounting seat is fixedly connected to the bottom end surface of the guide rod, a spring member is installed on the top end surface of the mounting seat, the top end of the spring member abuts against the bottom end of the sealing head, and a sealing gasket is fixedly connected to the bottom end surface of the mounting seat, and a sealing end is also fixedly connected to the bottom end surface of the mounting seat, the sealing end is used to be inserted into the interior of the sealing seat, and a guide block is fixedly connected to the outer peripheral surface of the sealing end in an annular array.

[0012] Beneficial Effects

[0013] The utility model provides a safety valve with pressure-maintaining performance. Compared with the prior art, it has the following beneficial effects:

[0014] The safety valve with pressure-maintaining performance is provided with a scale on the front end plane of the guide rod, so that no matter when the sealing end moves upward to open or moves downward to close the sealing seat, an external operator can quickly judge whether the rebound degree of the current sealing end is in place by using the scale currently set on the front end of the outer peripheral surface of the guide rod, thereby achieving the purpose of ensuring effective pressure maintenance.

[0015] The safety valve with pressure-maintaining performance is provided with a sealing head and a spring component of a split structure, so that when the spring component at the bottom end of the sealing head is damaged, the sealing head can be removed from the inside of the conduit by manually holding the cover plate, and the spring component and other components can be removed and replaced separately. This design can achieve the purpose of only replacing a single accessory when a single accessory is damaged, thereby achieving a more practical purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front and side view of the safety valve of the utility model after partial structure cut-away;

[0017] Figure 2 This is a schematic diagram of the safety valve of the utility model viewed from above and from the side;

[0018] Figure 3 This is a schematic diagram of the combined structure of the cover plate and the sealing head of the safety valve of the utility model;

[0019] Figure 4 It is a schematic diagram of the combined structure of the sealing end and the guide block of the safety valve of the utility model;

[0020] Figure 5 It is a schematic diagram of the combined structure of the sealing seat and the sealing groove of the safety valve of the utility model;

[0021] Figure 6 It is a schematic diagram of the top view of the safety valve of the utility model.

[0022] In the figure: 1, catheter; 101, connecting plate; 102, mounting hole; 103, shunt pipe; 2, sealing seat; 201, sealing groove; 202, guide groove; 3, cover plate; 301, sealing head; 302, guide rod; 303, scale; 304, mounting seat; 305, spring part; 306, sealing gasket; 307, sealing end; 308, guide block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 6 The utility model provides a technical solution: a safety valve with pressure-maintaining performance, comprising a conduit 1, the main body of the conduit 1 is a two-way through structure on both sides, and the top of the inner wall of the conduit 1 is provided with a thread, and a connecting disk 101 is fixedly connected to the bottom end surface of the conduit 1, the connecting disk 101 is a thin-upper-bottom-thick structure, and the connecting disk 101 is connected with the bottom end opening of the conduit 1 and is used to close the bottom end opening of the conduit 1, and an opening is provided on the bottom end surface of the connecting disk 101, and a through hole is provided in the interior of the connecting disk 101 in a circular array, and the through hole is a mounting hole 102, and the mounting hole 102 is used to connect a fixing bolt;

[0025] By fixing the connection plate 101 on the bottom end surface of the conduit 1, the conduit 1 can be quickly connected to the pipeline to be controlled when it is used, thereby achieving a more practical purpose.

[0026] See also Figure 1 , Figure 2 , a mounting seat 304 is fixedly connected to the bottom end surface of the guide rod 302, a spring member 305 is installed on the top end surface of the mounting seat 304, the top end of the spring member 305 abuts against the bottom end of the sealing head 301, and a sealing gasket 306 is fixedly connected to the bottom end surface of the mounting seat 304, and a sealing end 307 is also fixedly connected to the bottom end surface of the mounting seat 304, the sealing end 307 is used to be inserted into the inside of the sealing seat 2, and a guide block 308 is fixedly connected to the outer circumferential surface of the sealing end 307 in an annular array;

[0027] By fixing a sealing gasket 306 with a flexible structure on the bottom end surface of the mounting seat 304 , automatic rapid sealing can be achieved when the mounting seat 304 contacts the sealing seat 2 fixedly connected to the connecting plate 101 .

[0028] See also Figure 4 , Figure 5 A cover plate 3 is installed at the top end of the conduit 1, and grooves are provided in an annular array on the outer circumference of the cover plate 3, and a sealing head 301 is fixedly connected to the bottom end surface of the cover plate 3, and threads are also provided on the outer circumference of the sealing head 301, and through holes are provided in the cover plate 3 and the sealing head 301, which are bidirectionally connected on both the upper and lower sides;

[0029] By arranging a sealing head 301 with a threaded structure on the bottom end surface of the cover plate 3 , when the sealing head 301 is screwed to the inner position of the conduit 1 , rapid assembly and positioning can be achieved.

[0030] See also Figure 3 , Figure 4 The main body of the sealing seat 2 is a two-way through structure on both sides, and the sealing seat 2 is magnetic. An annular groove is provided on the top surface of the sealing seat 2, and the annular groove is a sealing groove 201. The sealing groove 201 and the sealing seat 2 together form a closed structure for the bottom opening of the connecting disk 101, and the diameter of the sealing seat 2 is larger than the diameter of the through hole provided in the connecting disk 101;

[0031] By providing a sealing groove 201 of an annular structure at the top of the sealing seat 2, it is possible to quickly assemble the sealing seat 2 by inserting the sealing gasket 306 when the sealing seat 2 is in use.

[0032] See also Figure 1 , Figure 6 A through hole is provided at the right end of the outer peripheral surface of the conduit 1, and a shunt pipe 103 is inserted into the through hole. The shunt pipe 103 is connected with the conduit 1, and a connecting plate 101 is fixedly connected to the side of the shunt pipe 103 away from the conduit 1, and a sealing seat 2 is fixedly connected to the inner bottom end surface of the connecting plate 101;

[0033] The sealing seat 2 is fixedly connected to the interior of the connection disk 101, so that when it is in use, an efficient sealing operation of the connection disk 101 can be achieved.

[0034] See also Figure 1 , Figure 5 A longitudinal groove is provided on the inner wall of the sealing seat 2, and the longitudinal groove is a guide groove 202. There are four guide grooves 202 in total, and the four guide grooves 202 are provided on the inner wall of the sealing seat 2 in a circular array. The sealing seat 2 and the guide grooves 202 together form a guide structure;

[0035] By providing a longitudinal guide groove 202 on the inner wall of the sealing seat 2, the sealing seat 2 can be quickly inserted and assembled into the mounting seat 304 when in use.

[0036] See also Figure 2 , Figure 3 A guide rod 302 is inserted into the through hole in the cover plate 3 and the sealing head 301. The main body of the guide rod 302 is a cylindrical structure, and a plane is provided at the front end of the outer circumference of the guide rod 302, and a scale 303 is provided on the plane;

[0037] By providing a scale 303 at the front end of the outer peripheral surface of the guide rod 302, the current rebound degree of the guide rod 302 can be intuitively displayed when it is used.

[0038] During operation, when the safety valve is installed, the conduit 1 can be connected to the pipeline body by using the connection plate 101 fixedly connected on the bottom end surface thereof, and the bolt can be passed through the installation hole 102 opened in the connection plate 101 to realize the rapid assembly operation of the current conduit 1. When in use, the cover plate 3 can be manually held and the cover plate 3 can be screwed to the inside of the conduit 1 by using the sealing head 301 fixedly connected on the bottom end surface thereof to seal the top end of the conduit 1.

[0039] After the sealing of the cover plate 3 is completed, the mounting seat 304 arranged on the bottom end surface of the guide rod 302 can be simultaneously inserted into the internal position of the sealing seat 2, and the four guide blocks 308 fixedly connected to the outer peripheral surface of the sealing end 307 can be moved downward and inserted into the internal position of the guide groove 202 opened in the sealing seat 2 to perform sealing. When the pressure is released, the liquid will discharge the sealing end 307 upward, and the shunt pipe 103 arranged on the outer peripheral surface of the conduit 1 can be simultaneously used to perform rapid shunt pressure relief work, thereby achieving a more practical purpose.

[0040] In summary, the device is provided with a scale 303 at the front end of the outer circumferential surface of the guide rod 302, so that the current rebound degree of the guide rod 302 can be observed and judged intuitively when it is used.

[0041] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A safety valve with pressure-maintaining performance, comprising a conduit (1), characterized in that: The main body of the conduit (1) is a two-way through structure at the upper and lower sides, and the top of the inner wall of the conduit (1) is provided with a thread, and a connecting plate (101) is fixedly connected to the bottom end surface of the conduit (1), and the connecting plate (101) is a thin structure at the top and thick structure at the bottom, and the connecting plate (101) is connected with the bottom opening of the conduit (1) and is used to close the bottom opening of the conduit (1), and an opening is provided on the bottom end surface of the connecting plate (101), and the inside of the connecting plate (101) is provided with through holes in a circular array, and the through holes are mounting holes (102), and the mounting holes (102) are used to connect the fixing bolts; the conduit (1) A cover plate (3) is installed at the top end, and grooves are provided in an annular array on the outer circumference of the cover plate (3), and a sealing head (301) is fixedly connected to the bottom end surface of the cover plate (3), and a thread is also provided on the outer circumference of the sealing head (301), and through holes are provided in the cover plate (3) and the sealing head (301) that are bidirectionally connected on both the upper and lower sides; a guide rod (302) is inserted into the through holes provided in the cover plate (3) and the sealing head (301), and the main body of the guide rod (302) is a cylindrical structure, and a plane is provided on the upper end of the outer circumference of the guide rod (302), and a scale (303) is provided on the plane.

2. A safety valve with pressure-maintaining performance according to claim 1, characterized in that: A through hole is provided at the right end of the outer peripheral surface of the conduit (1), a shunt pipe (103) is inserted into the through hole, the shunt pipe (103) and the conduit (1) are connected, and a connecting plate (101) is fixedly connected to the side of the shunt pipe (103) away from the conduit (1), and a sealing seat (2) is fixedly connected to the inner bottom end surface of the connecting plate (101).

3. A safety valve with pressure-maintaining performance according to claim 2, characterized in that: The main body of the sealing seat (2) is a bidirectional through-structure on both upper and lower sides, and the sealing seat (2) is magnetic. An annular groove is provided on the top surface of the sealing seat (2), and the annular groove is a sealing groove (201). The sealing groove (201) and the sealing seat (2) together form a closed structure for the bottom opening of the connecting disk (101), and the diameter of the sealing seat (2) is greater than the diameter of the through hole provided in the connecting disk (101).

4. A safety valve with pressure-maintaining performance according to claim 3, characterized in that: The inner wall of the sealing seat (2) is provided with a longitudinal groove, which is a guide groove (202). There are four guide grooves (202) in total, and the four guide grooves (202) are arranged in a circular array on the inner wall of the sealing seat (2). The sealing seat (2) and the guide grooves (202) together form a guide structure.

5. A safety valve with pressure-maintaining performance according to claim 1, characterized in that: The bottom end surface of the guide rod (302) is fixedly connected to a mounting seat (304), the top end surface of the mounting seat (304) is mounted with a spring member (305), the top end of the spring member (305) is in contact with the bottom end of the sealing head (301), and the bottom end surface of the mounting seat (304) is fixedly connected to a sealing gasket (306), and the bottom end surface of the mounting seat (304) is also fixedly connected to a sealing end (307), the sealing end (307) is used to be inserted into the interior of the sealing seat (2), and the outer peripheral surface of the sealing end (307) is fixedly connected to a guide block (308) in a ring array.

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