Valve seat sealing structure and corrugated pipe sealing stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to a valve seat sealing structure and a corrugated pipe sealing stop valve.The valve seat sealing structure comprises a valve seat, a valve deck is installed at the top of the valve seat, a valve rod is installed in the valve seat and penetrates through the top of the valve deck, grooves are formed in the valve seat and the valve deck, and the corrugated pipe sealing stop valve is installed in the grooves. A containing groove is formed in the valve seat, a first sealing ring and a second sealing ring are placed in the groove, a water circulation assembly is installed on the top of the valve deck, and the water circulation assembly communicates with the groove and the containing groove. The valve seat sealing structure and the corrugated pipe sealing stop valve have the advantages that the first sealing ring and the second sealing ring are placed in the groove in a combined mode to seal the valve seat and the valve cover, and the valve seat and the valve cover are sealed through the performance of water; water can circularly flow in the grooves of the valve seat and the valve cover and in the placement groove through the water circulation assembly, so that the sealing performance of the connector of the valve seat is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stop valve, concretely to a valve seat sealing structure and bellows sealed stop valve. BACKGROUND

[0002] The most basic function of the stop valve is to cut off the fluid in the pipeline, when the valve is completely closed, the valve clack and the valve seat are closely attached, which can prevent the fluid from passing through, and the bellows is a metal element with telescopic property, when being tightly welded with the valve rod, a static sealing structure is formed, which can enhance the airtightness of the stop valve, and the valve seat sealing structure is the key part of the valve, and the advantages and disadvantages of its sealing performance are directly related to the leakage of the fluid.

[0003] In the prior art valve seat sealing structure and bellows sealed stop valve, a plurality of rubber sealing rings are often used to seal the interface, the rubber sealing ring is used for a long time, and permanent deformation occurs after being compressed for a long time, so that the original state cannot be restored, resulting in weakened sealing effect, expansion or melting easily occurs when contacting chemical substances, and normal use is affected, and in high-frequency mechanical movement, the rubber sealing ring may be abraded or broken due to factors such as friction and stress concentration, and the sealing property of the rubber sealing ring is deteriorated.

[0004] Therefore, the utility model provides a valve seat sealing structure and bellows sealed stop valve to solve the problems in the prior art. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a valve seat sealing structure and bellows sealed stop valve to solve the problems in the prior art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a valve seat sealing structure, the valve seat sealing structure includes: a valve seat, a valve cover is installed at the top of the valve seat, a valve rod is installed in the inside of the valve seat, the valve rod penetrates the top of the valve cover;

[0007] The inside of the valve seat and the valve cover is provided with a groove, the inside of the valve seat is provided with a placing groove, the first sealing ring and the second sealing ring are placed in the groove, the top of the valve cover is provided with a water circulation assembly, and the water circulation assembly is in communication with the groove and the placing groove.

[0008] Preferably, the water circulation assembly includes a water storage tank, the water storage tank is located at the top of the valve cover, a recovery pipe is installed at the bottom of the water storage tank, a reflux pipe is connected and installed at the bottom end of the recovery pipe, one end of the reflux pipe is connected with the bottom of the placing groove, and a circulating pump is installed on the side wall of the water storage tank.

[0009] Preferably, one end of the circulating pump is connected with a ring pipe, the bottom of the ring pipe is provided with a plurality of water outlet pipes arranged in an annular array, the water outlet pipes penetrate the top of the valve cover and enter the inside of the recess, and the bottom of the water outlet pipes is located at the top of the first sealing ring and the second sealing ring.

[0010] Preferably, the second sealing ring is located on the outer surface of the first sealing ring, the bottom of the first sealing ring is provided with a plurality of annular grooves, and the outer surface of the second sealing ring is provided with a plurality of tooth columns.

[0011] Preferably, the side wall of the tooth column is provided with a gear through tooth engagement, the gear is located in the inside of the valve cover, a rotating rod penetrates the center of the gear, the rotating rod penetrates the top of the valve cover, and a driving motor is arranged on the top of the rotating rod.

[0012] Preferably, the inside of the placing groove is provided with an annular clamping plate, and the top of the annular clamping plate is clamped with the inside of the annular groove.

[0013] Preferably, the inside of the placing groove is provided with a plurality of springs, and the top of the spring is fixed to the bottom of the annular clamping plate.

[0014] The utility model provides a bellows sealed stop valve, including the valve seat sealing structure.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The valve seat sealing structure and the bellows sealed stop valve have the advantages that: the first sealing ring and the second sealing ring are combined and placed in the inside of the recess to seal the valve seat and the valve cover, the water circulation assembly is used to make the water circulate in the recess of the valve seat and the valve cover and the inside of the placing groove, and the sealing performance of the interface of the valve seat is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a perspective view of the bellows sealed stop valve of the utility model;

[0018] Figure 2 Fig. 2 is a sectional view of the bellows sealed stop valve of the utility model;

[0019] Figure 3 Fig. 3 is a perspective view of the water circulation assembly of the utility model;

[0020] Figure 4 Fig. 4 is a perspective view of the sealing structure of the utility model.

[0021] In the drawing: 1, valve seat; 2, valve cover; 3, valve rod; 4, recess; 5, placing groove; 6, first sealing ring;

[0022] 7, second sealing ring; 8, water circulation assembly; 9, water storage tank; 10, recovery pipe; 11, backflow pipe;

[0023] 12, circulating pump; 13, ring pipe; 14, water outlet pipe; 15, ring groove; 16, tooth column; 17, gear; 18, rotating rod; 19, driving motor; 20, annular clamping plate; 21, spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and obvious, the following combining with the drawing carries out further detailed explanation to the utility model embodiment. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0025] Embodiment one

[0026] Please refer to Figures 1-4 The utility model provides a technical scheme: a valve seat sealing structure, the valve seat sealing structure includes: valve seat 1, the top of valve seat 1 is equipped with valve cover 2, the inside of valve seat 1 is equipped with valve stem 3, valve stem 3 penetrates the top of valve cover 2;

[0027] The inside of valve seat 1 and valve cover 2 is all provided with recess 4, the inside of valve seat 1 is equipped with placing groove 5, recess 4 is placed with first sealing ring 6 and second sealing ring 7, the top of valve cover 2 is equipped with water circulation assembly 8, water circulation assembly 8 and recess 4 and placing groove 5 are intercommunicated, the inside of placing groove 5 is equipped with annular clamping plate 20, the top of annular clamping plate 20 is engaged with the inside of ring groove 15, the inside of placing groove 5 is equipped with a plurality of springs 21, the top of spring 21 is fixed in the bottom of annular clamping plate 20, a bellows seal stop valve including the valve seat sealing structure described;

[0028] When using, through first sealing ring 6 and second sealing ring 7 combination is placed in the inside of recess 4 to the valve valve seat 1 and valve cover 2 are sealed, through annular clamping plate 20 under the action of the upward thrust provided by spring 21, the inside of the center ring groove 15 fixed in the bottom of first sealing ring 6, will first sealing ring 6 be fixed tightly, through water circulation assembly 8 makes water can be in the recess 4 of valve seat 1 and valve cover 2 and the inside of placing groove 5 circulates and flows, through the sealing of the interface space is enhanced by water.

[0029] Embodiment two

[0030] On the basis of example one in order to facilitate the flow and recycling of water, increase the sealing of valve seat 1, water circulation assembly 8 includes water storage tank 9, water storage tank 9 is located at the top of the valve cover 2, the bottom of the water storage tank 9 is provided with a recovery pipe 10, the bottom end of the recovery pipe 10 is connected with a backflow pipe 11, one end of the backflow pipe 11 is connected with the bottom of the placement groove 5, the sidewall of the water storage tank 9 is provided with a circulating pump 12, one end of the circulating pump 12 is connected with a ring pipe 13, the bottom of the ring pipe 13 is provided with a plurality of annular array evenly distributed water outlet pipes 14, the water outlet pipes 14 penetrate through the top of the valve cover 2 and penetrate into the inside of the groove 4, the bottom of the water outlet pipes 14 is located at the top of the first sealing ring 6 and the second sealing ring 7;

[0031] In use, the circulating pump 12 draws water in the water storage tank 9 into the inside of the ring pipe 13, so that it is left to the inside of the groove 4 through the water outlet pipe 14, so that it is left to the outside wall of the second sealing ring 7 between the tooth column 16, the water seal between the valve seat 1 and the valve cover 2 is carried out, when the sealing performance is poor, in order to avoid the sealing performance decline, the water from the bottom of the second sealing ring 7 leaks into, will make the flow to the inside of the placement groove 5, through the backflow pipe 11 and the recovery pipe 10, the water that leaks is drawn into the inside of the water storage tank 9 for circulation, avoid water left to the inside of the first sealing ring 6, the water in the sealing place is driven and circulated in time, to enhance the sealing of the valve seat 1.

[0032] Example three

[0033] On the basis of example two in order to facilitate the flow of water in the second sealing ring 7, avoid the leakage of water after the sealing performance is poor, the second sealing ring 7 is located on the outer surface of the first sealing ring 6, a plurality of annular grooves 15 are arranged on the bottom of the first sealing ring 6, a plurality of tooth columns 16 are arranged on the outer surface of the second sealing ring 7, the side wall of the tooth column 16 is provided with a gear 17 through the engagement of the teeth, the gear 17 is located in the inside of the valve cover 2, the center of the gear 17 is provided with a rotating rod 18, the rotating rod 18 penetrates through the top of the valve cover 2, the top of the rotating rod 18 is provided with a driving motor 19;

[0034] In use, the driving motor 19 drives the rotating rod 18 to rotate, and then drives the gear 17 to rotate, through the engagement of the teeth and the tooth column 16, the second sealing ring 7 can be driven to rotate, so that the tooth column 16 between the second sealing ring 7 is filled with water.

[0035] In actual use, the valve seat 1 and the valve cover 2 are sealed by the combined placement of the first sealing ring 6 and the second sealing ring 7 inside the recess 4, the first sealing ring 6 is fixed tightly by the annular clamping plate 20 fixed inside the central ring groove 15 at the bottom of the first sealing ring 6 under the upward thrust provided by the spring 21, the circulating pump 12 draws the water in the water storage tank 9 to the inside of the annular pipe 13, and then to the inside of the recess 4 through the water outlet pipe 14, the driving motor 19 drives the rotating rod 18 to rotate, and then drives the gear 17 to rotate, through the meshing of the gear teeth and the tooth column 16, the second sealing ring 7 can be driven to rotate, so that the tooth columns 16 between the second sealing ring 7 are filled with water, and the water seal between the valve seat 1 and the valve cover 2 is formed, when the sealing performance is poor, in order to avoid the decline of the sealing performance, the water seeps into the second sealing ring 7 from the bottom, and then flows to the inside of the placement groove 5, through the backflow pipe 11 and the recovery pipe 10, the leaked water is drawn to the inside of the water storage tank 9 for circulation, avoiding the water remaining in the inside of the first sealing ring 6, the water in the sealing part is driven and circulated in time, so as to enhance the sealing performance of the valve seat 1.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A valve seat seal structure, characterized by: The valve seat sealing structure comprises a valve seat (1), a valve cover (2) mounted on the top of the valve seat (1), and a valve stem (3) mounted in the valve seat (1) and penetrating through the top of the valve cover (2). The valve seat (1) and the valve cover (2) are internally provided with grooves (4), the valve seat (1) is internally provided with a placing groove (5), the grooves (4) are internally provided with a first sealing ring (6) and a second sealing ring (7), and the top of the valve cover (2) is provided with a water circulation assembly (8) in communication with the grooves (4) and the placing groove (5).

2. A valve seat sealing structure according to claim 1, wherein: The water circulation assembly (8) comprises a water storage tank (9) located on the top of the valve cover (2), a recovery pipe (10) mounted on the bottom of the water storage tank (9), a return pipe (11) connected to the bottom end of the recovery pipe (10), one end of the return pipe (11) connected to the bottom of the placing groove (5), and a circulating pump (12) mounted on the sidewall of the water storage tank (9).

3. A valve seat sealing structure according to claim 2, wherein: One end of the circulating pump (12) is connected to a ring pipe (13) provided with a plurality of water outlet pipes (14) arranged in a ring array and evenly distributed on the bottom of the ring pipe (13), the water outlet pipes (14) penetrating through the top of the valve cover (2) and into the grooves (4), and the bottom of the water outlet pipes (14) located on the top of the first sealing ring (6) and the second sealing ring (7).

4. The valve seat sealing structure of claim 1, wherein: The second sealing ring (7) is located on the outer surface of the first sealing ring (6), the bottom of the first sealing ring (6) is provided with a plurality of ring grooves (15), and the outer surface of the second sealing ring (7) is provided with a plurality of tooth columns (16).

5. A valve seat sealing structure according to claim 4, wherein: The sidewall of the tooth column (16) is provided with a gear (17) through tooth engagement, the gear (17) is located in the valve cover (2), the center of the gear (17) is provided with a rotating rod (18) penetrating through the top of the valve cover (2), and the top of the rotating rod (18) is provided with a driving motor (19).

6. The valve seat sealing structure of claim 1, wherein: The placing groove (5) is internally provided with a ring-shaped clamping plate (20), and the top of the ring-shaped clamping plate (20) is clamped with the inside of the ring groove (15).

7. The valve seat sealing structure of claim 1, wherein: The placing groove (5) is internally provided with a plurality of springs (21), and the top of the spring (21) is fixed to the bottom of the ring-shaped clamping plate (20).

8. A bellows seal globe valve characterized by: The valve seat sealing structure comprises a valve seat (1), a valve cover (2) mounted on the top of the valve seat (1), and a valve stem (3) mounted in the valve seat (1) and penetrating through the top of the valve cover (2). The valve seat (1) and the valve cover (2) are internally provided with grooves (4), the valve seat (1) is internally provided with a placing groove (5), the grooves (4) are internally provided with a first sealing ring (6) and a second sealing ring (7), and the top of the valve cover (2) is provided with a water circulation assembly (8) in communication with the grooves (4) and the placing groove (5). The water circulation assembly (8) comprises a water storage tank (9) located on the top of the valve cover (2), a recovery pipe (10) mounted on the bottom of the water storage tank (9), a return pipe (11) connected to the bottom end of the recovery pipe (10), one end of the return pipe (11) connected to the bottom of the placing groove (5), and a circulating pump (12) mounted on the sidewall of the water storage tank (9). One end of the circulating pump (12) is connected to a ring pipe (13) provided with a plurality of water outlet pipes (14) arranged in a ring array and evenly distributed on the bottom of the ring pipe (13), the water outlet pipes (14) penetrating through the top of the valve cover (2) and into the grooves (4), and the bottom of the water outlet pipes (14) located on the top of the first sealing ring (6) and the second sealing ring (7). The second sealing ring (7) is located on the outer surface of the first sealing ring (6), the bottom of the first sealing ring (6) is provided with a plurality of ring grooves (15), and the outer surface of the second sealing ring (7) is provided with a plurality of tooth columns (16). The sidewall of the tooth column (16) is provided with a gear (17) through tooth engagement, the gear (17) is located in the valve cover (2), the center of the gear (17) is provided with a rotating rod (18) penetrating through the top of the valve cover (2), and the top of the rotating rod (18) is provided with a driving motor (19). The placing groove (5) is internally provided with a ring-shaped clamping plate (20), and the top of the ring-shaped clamping plate (20) is clamped with the inside of the ring groove (15). The placing groove (5) is internally provided with a plurality of springs (21), and the top of the spring (21) is fixed to the bottom of the ring-shaped clamping plate (20). The valve seat sealing structure comprises a valve seat (1), a valve cover (2) mounted on the top of the valve seat (1), and a valve stem (3) mounted in the valve seat (1) and penetrating through the top of the valve cover (2). The valve seat (1) and the valve cover (2) are internally provided with grooves (4), the valve seat (1) is internally provided with a placing groove (5), the grooves (4) are internally provided with a first sealing ring (6) and a second sealing ring (7), and the top of the valve cover (2) is provided with a water circulation assembly (8) in communication with the grooves (4) and the placing groove (5).

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