Novel corrosion-resistant buried stainless steel gate valve

Abstract

The novel corrosion-resistant buried stainless steel gate valve comprises a valve body, a valve rod is longitudinally arranged in the valve body in a penetrating mode, a flow intercepting plate used for controlling a channel to be opened and closed is fixed to the valve rod, the top end of the valve rod penetrates through the valve body, and the side face of the flow intercepting plate is of a cambered surface structure. According to the utility model, the telescopic structures of the sleeve and the sliding rod can be freely adjusted along with the settlement or the upheaval of the ground, the position of the valve body does not need to be frequently adjusted, and when in use, the sliding rod is firstly pulled into the groove, and then the sliding rod is pulled into the groove; further rotation is carried out to push into the deep part of the groove for height fixation; the grip is arranged on the peripheral side of the wheel disc to increase torque, meanwhile, an operator can stand on the ground for operation, and labor is saved when the gate valve is opened and closed. And the gasket is arranged in the compression ring, and the closure plate is matched with the gasket, so that the sealing performance of the valve body is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a novel corrosion-resistant buried stainless steel gate valve. Background Art

[0002] The buried gate valve is a valve widely used in water supply and drainage, petroleum, natural gas, chemical industry, environmental protection and other industries. Its main feature is that it is buried below the surface, and the surface above the equipment can be used as greening or other land, without the need for building, heating and insulation. There are many types of buried gate valves, such as concealed stem gate valves, elastic seat seal gate valves, direct buried gate valves, etc.

[0003] After searching, the Chinese patent publication number is CN 207830572 U. The utility model discloses an underground gate valve, including a gate valve body and a gate seat, the gate seat is arranged at the top of the gate valve body, a channel is arranged in the gate valve body, a cavity is arranged in the gate seat, the bottom end of the cavity penetrates the gate seat and the top wall of the gate valve body, and extends into the channel, a holding plate is arranged in the channel, the bottom end of the holding plate extends into the cavity, a holding plate hole is arranged in the holding plate, the holding plate hole penetrates the holding plate, and extends to both sides of the holding plate. The utility model is connected to the external pipe by an external pipe connecting plate, and the gate valve body, the gate seat and the bottom of the top seat are pre-buried in the soil, which can effectively reduce the man-made damage rate of the gate valve. Since it takes a long time to rotate the holding plate hole to be perpendicular to the channel, the water hammer phenomenon is not easy to occur, and the device has a simple structure and is easy to operate, which can effectively control the liquid.

[0004] The above patent still has some shortcomings. The valve stem of the buried gate valve is usually longer, but the settlement or uplift of the ground over time requires timely adjustment of the valve body position, and it is more laborious to adjust the opening and closing process only by the valve stem wheel. Therefore, the utility model designs a new type of corrosion-resistant buried stainless steel gate valve to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a novel corrosion-resistant buried stainless steel gate valve in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A novel corrosion-resistant buried stainless steel gate valve comprises a valve body, a valve stem is longitudinally penetrated inside the valve body, a shutoff plate for controlling the opening and closing of a channel is fixed on the valve stem, the top end of the valve stem passes through the valve body, the side of the shutoff plate is a curved structure, the diameter of the shutoff plate away from the valve stem is larger than the diameter of the other side, a pressure ring is arranged between the valve body and the shutoff plate, and a gasket for sealing is installed in the pressure ring.

[0008] Preferably, a mounting groove matching the gasket is provided on the pressure ring along the pressing direction of the intercepting plate.

[0009] Preferably, a sleeve is provided at the top end of the valve stem and is connected with a connecting pin, a sliding rod is provided in the cavity of the sleeve, and a groove is provided in the cavity at the upper end of the sleeve.

[0010] Preferably, the shape of the bottom end of the sleeve matches the cross-sectional shape of the groove, and when the slide bar is stretched to a maximum length, the slide bar is pushed into the deep end of the groove for fixation by further rotation.

[0011] Preferably, a wheel disc is installed at the top end of the slide rod by bolts, a fixing stud is installed on the outer peripheral side of the wheel disc, and a handle is fixedly provided at the other end of the fixing stud.

[0012] Preferably, a connecting block for connecting the valve stem is fixedly provided in the middle of the shutoff plate, and a side of the connecting block away from the shutoff plate is a curved surface adapted to the valve stem.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the telescopic structure of the sleeve and the slide rod can be freely adjusted with the settlement or uplift of the ground, and there is no need to frequently adjust the position of the valve body. When in use, first pull the slide rod into the groove, and further rotate it to push it into the deep of the groove to fix the height;

[0015] 2. In the utility model, a handle is provided on the outer peripheral side of the wheel disc to increase the torque, and the operator can stand on the ground to operate, which saves effort when opening and closing the gate valve;

[0016] 2. In the utility model, a gasket is installed in the pressure ring, and the cooperation between the intercepting plate and the gasket can make the sealing performance of the valve body more reliable.

[0017] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0019] Figure 1 It is a three-dimensional diagram of a novel corrosion-resistant buried stainless steel gate valve described in the utility model;

[0020] Figure 2It is a side sectional view of a novel corrosion-resistant buried stainless steel gate valve described in the utility model;

[0021] Figure 3 It is a partial cross-sectional view of the valve body of a novel corrosion-resistant buried stainless steel gate valve described in the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of a casing of a novel corrosion-resistant buried stainless steel gate valve described in the utility model.

[0023] The description of the accompanying drawings is as follows: 1. valve body; 2. valve stem; 3. shut-off plate; 4. pressure ring; 5. gasket; 6. sleeve; 7. groove; 8. slide rod; 9. wheel; 10. fixing stud; 11. handle; 12. connecting block; 13. connecting pin. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] like Figure 1-Figure 4 As shown, a novel corrosion-resistant buried stainless steel gate valve comprises a valve body 1, a valve stem 2 is longitudinally penetrated inside the valve body 1, a shutoff plate 3 for controlling the opening and closing of a channel is fixed on the valve stem 2, the top end of the valve stem 2 penetrates the valve body 1, the side of the shutoff plate 3 is an arc surface structure, the diameter of the shutoff plate 3 away from the valve stem 2 is larger than the diameter of the other side, a pressure ring 4 is arranged between the valve body 1 and the shutoff plate 3, a gasket 5 for sealing is installed in the pressure ring 4, the valve body 1 and the valve stem 2 are buried in the soil, which effectively reduces the probability of man-made damage to the gate valve.

[0028] In this embodiment, a mounting groove matching the gasket 5 is provided on the pressure ring 4 along the pressing direction of the shutoff plate 3, which can strengthen the fixation between the pressure ring 4 and the gasket 5 and prevent the gasket 5 from separating from the valve body 1 during the pressing process of the shutoff plate 3.

[0029] In this embodiment, a sleeve 6 is provided at the top end of the valve stem 2 and is connected by a connecting pin 13 . A sliding rod 8 is provided in the cavity of the sleeve 6 . A groove 7 is provided in the cavity at the upper end of the sleeve 6 .

[0030] In this embodiment, the shape of the bottom end of the sleeve 6 matches the cross-sectional shape of the groove 7. When the gate valve needs to be opened and closed, the slide rod 8 is pulled to slide into the groove 7 at the top of the sleeve 6, and the handle 11 is rotated to push it to the deep end of the groove 7 for limiting. The operator can stand on the ground to operate.

[0031] In this embodiment, a wheel disc 9 is installed at the top of the sliding rod 8 by bolts, a fixing stud 10 is installed on the outer peripheral side of the wheel disc 9, and a handle 11 is fixedly provided at the other end of the fixing stud 10. The fixing stud 10 is screwed into the wheel disc 9 to increase the torque through the handle 11.

[0032] In this embodiment, a connecting block 12 for connecting the valve stem 2 is fixedly provided in the middle of the shutoff plate 3 , and a side of the connecting block 12 away from the shutoff plate 3 is a curved surface adapted to the valve stem 2 .

[0033] Working principle: The sleeve 6 is slidably connected with the slide rod 8, and the valve body 1 and the valve stem 2 are buried in the soil, which effectively reduces the probability of man-made damage to the gate valve. When the gate valve needs to be opened and closed, the wheel disc 9 is fixedly connected to the top of the slide rod 8 by bolts, and the fixing stud 10 is screwed into the wheel disc 9. The handle 11 is used to increase the torque, and the slide rod 8 is pulled to slide into the groove 7 at the top of the sleeve 6. The handle 11 is rotated to push it to the deep end of the groove 7 for limiting. The operator can stand on the ground to operate. When the intercepting plate 3 is rotated to be parallel to the flow direction of the liquid, the gate valve is opened at this time. When closed, the valve stem 2 drives the intercepting plate 3 to rotate and compress the gasket 5. An installation groove matching the gasket 5 is provided on the pressure ring 4 along the pressing direction of the intercepting plate 3, which can strengthen the fixation between the pressure ring 4 and the gasket 5 to prevent the gasket 5 from detaching from the valve body 1 during the pressing process of the intercepting plate 3. The liquid cannot pass through the channel of the valve body 1, which can ensure zero leakage of the gate valve.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel corrosion-resistant buried stainless steel gate valve, comprising a valve body (1), characterized in that: A valve stem (2) is longitudinally penetrated inside the valve body (1), a shutoff plate (3) for controlling the opening and closing of a channel is fixed on the valve stem (2), the top end of the valve stem (2) passes through the valve body (1), the side of the shutoff plate (3) is a curved surface structure, the diameter of the shutoff plate (3) away from the valve stem (2) is larger than the diameter of the other side, a pressure ring (4) is arranged between the valve body (1) and the shutoff plate (3), and a gasket (5) for sealing is installed in the pressure ring (4).

2. According to claim 1, a new type of corrosion-resistant buried stainless steel gate valve is characterized by: The pressure ring (4) is provided with a mounting groove matching the gasket (5) along the direction in which the intercepting plate (3) is pressed into.

3. According to the novel corrosion-resistant buried stainless steel gate valve of claim 1, it is characterized by: A sleeve (6) is provided at the top end of the valve stem (2) and is connected using a connecting pin (13); a sliding rod (8) is provided in the cavity of the sleeve (6); and a groove (7) is provided in the cavity at the upper end of the sleeve (6).

4. According to claim 3, a new type of corrosion-resistant buried stainless steel gate valve is characterized in that: The shape of the bottom end of the sleeve (6) matches the cross-sectional shape of the groove (7), and when the slide bar (8) is stretched to its maximum length, the slide bar (8) is pushed into the depth of the groove (7) for fixation by further rotation.

5. According to claim 4, a new type of corrosion-resistant buried stainless steel gate valve is characterized in that: A wheel disc (9) is mounted on the top end of the slide bar (8) via bolts, a fixing stud (10) is mounted on the outer peripheral side of the wheel disc (9), and a handle (11) is fixedly disposed on the other end of the fixing stud (10).

6. According to claim 1, a new type of corrosion-resistant buried stainless steel gate valve is characterized by: A connecting block (12) for connecting to the valve stem (2) is fixedly arranged in the middle of the shutoff plate (3); a side of the connecting block (12) away from the shutoff plate (3) is a curved surface adapted to the valve stem (2).

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