Quick-opening stop valve

Abstract

A quick-opening stop valve comprises a valve body (1), a valve seat (2), a valve rod (3) and a set of inflation rubber rings (4), the valve seat (2) is installed on the inner wall of a circulation cavity in the middle of the valve body (1), a valve clack (5) is arranged at the bottom of the valve rod (3), the valve rod (3) is movably installed in the valve body (1) in a sealed mode, and the valve clack (5) is driven to ascend or descend in the valve body (1) by rotating the valve rod (3); the valve has the advantages that gas in the inflation rubber ring is reduced along with temperature reduction, space is reserved, and the valve is prevented from being broken after water in the valve is frozen. The sealing performance of the valve clack and the valve seat is good. The hand wheel is simple in overall structure, the hub and the rim are connected through the pair of spokes, and the rotating hand feeling is good. And the hand wheel is not easy to slip during rotation. The crank is detachable and can be installed according to needs.

Description

Technical Field

[0001] The utility model relates to the field of valves, and particularly to a quick-opening stop valve. Background Art

[0002] At present, valves are everywhere in daily production and life. All water pipelines cannot do without the control of various valves, which brings great convenience to people's production and life. General valves are mainly composed of a valve body and a valve core. People control the flow of water through the opening and closing of the valve core. However, when people use valves in winter, if the heat preservation measures for pipelines and valves are not good, the valves are often burst due to cold climate, solidification and expansion of pipeline water. Moreover, this phenomenon is very common, resulting in valve scrapping, economic losses, loss of water control, a large amount of leakage, affecting normal production and life, and even causing floods, threatening people's lives and property safety.

[0003] The valve handwheel is a component arranged outside the valve body to connect the valve core and control the rotation of the valve core. The outer edge of the existing handwheel body is a flat arc. When turning the handwheel body, both hands are prone to slipping along the rotation direction. At the same time, the existence of the plastic layer makes the surface of the handwheel body smoother, resulting in the operator being unable to grip the handwheel body tightly, and the entire rotation process is relatively strenuous. The crank on the handwheel is mostly integrally formed and cannot be disassembled, which affects the use feel when the crank is not needed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a quick-opening stop valve aiming at the above deficiencies.

[0005] The utility model includes a valve body, a valve seat, a valve rod and a group of inflatable rubber rings.

[0006] The valve seat is installed on the inner wall of the flow-through cavity in the middle of the valve body. A valve flap is arranged at the bottom of the valve rod. The valve rod is movably and hermetically installed in the valve body. By rotating the valve rod, the valve flap is driven to rise or fall in the valve body. When the valve flap descends, it presses tightly on the top of the valve seat to close the middle flow-through cavity. Rubber ring installation grooves are respectively arranged on the inner walls of the inlet pipe and the outlet pipe of the valve body. A group of inflatable rubber rings are installed in the corresponding rubber ring installation grooves.

[0007] A handwheel is arranged at the top of the valve rod. The handwheel includes a hub and a rim. The hub is fixed at the center of the rim through a pair of spokes. An axial hole is opened on the hub. A pair of anti-slip protrusions are symmetrically distributed on the inner wall of the rim.

[0008] There is an internal thread on the inner wall of the flow-through cavity in the middle of the valve body, and an external thread is provided on the outer wall of the valve seat. The valve seat is threadedly installed on the inner wall of the flow-through cavity in the middle of the valve body; an annular inclined sealing surface is formed on the inner wall at the top of the valve seat, and an annular inclined sealing protrusion matching the annular inclined sealing surface is provided on the lower outer wall of the valve flap; one side of the rubber ring installation groove is the open end of the valve body, and the other side of the rubber ring installation groove is the inner cavity of the valve body. The inner wall diameter of the valve body on one side of the rubber ring installation groove is larger than the inner wall diameter of the valve body on the other side of the rubber ring installation groove.

[0009] After the inflatable rubber ring is inflated and expanded, the inner ring cross-section of the inflatable rubber ring is arc-shaped, and the outer ring cross-section of the inflatable rubber ring is rectangular; an air nozzle installation groove is provided on the outer ring of the inflatable rubber ring, and an air nozzle is arranged in the air nozzle installation groove.

[0010] A valve cover is arranged on the top of the valve body. The valve stem is hermetically installed in the valve cover through packing sealing, and the bottom of the valve stem is located inside the valve body; a rubber ring installation groove is arranged in the opening at the top of the valve body, and an inflatable rubber ring is arranged in the rubber ring installation groove.

[0011] Threaded holes are formed on the outer wall of the hub, and locking screws are screwed into the threaded holes to fix the hub on the top of the valve stem.

[0012] Multiple groups of anti-slip patterns are arranged on the outer wall of the rim.

[0013] A group of arc-shaped anti-slip protrusions are evenly arranged in a ring at the top of the rim.

[0014] A cylindrical protrusion is arranged at the connection between the spoke and the rim. An installation hole is formed at the center of the cylindrical protrusion, and a crank is arranged in the installation hole.

[0015] The crank is cylindrical.

[0016] A screw rod is arranged at the bottom of the crank and is threadedly installed in the installation hole of the cylindrical protrusion through the screw rod; reinforcing ribs are respectively arranged on both sides at the connection between the spoke and the rim; a pair of spokes and a pair of anti-slip protrusions are arranged in a cross.

[0017] The advantages of the present utility model are as follows: as the temperature decreases, the gas in the inflatable rubber ring shrinks, creating space to prevent the water in the valve from freezing and bursting the valve. The sealing performance between the valve flap and the valve seat is good. The overall structure of the handwheel is simple. A pair of spokes are used to connect the hub and the rim, and the rotation feel is good. The handwheel is not easy to slip during rotation. The crank is detachable and can be installed according to needs. Description of the Drawings

[0018] Figure 1 It is a schematic cross-sectional structure view of the present utility model.

[0019] Figure 2 It is a schematic structure view of the inflatable rubber ring of the present utility model.

[0020] Figure 3It is a schematic structural view of the inflation nozzle of the present utility model.

[0021] Figure 4 It is a schematic structural view of the handwheel of the present utility model.

[0022] Figure 5 It is a schematic structural view of the handwheel of the present utility model with a crank installed. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, in the description of the present invention, if terms such as "first", "second", etc. are used only for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] As shown in the attached drawings, the utility model includes a valve body 1, a valve seat 2, a valve rod 3 and a set of inflatable rubber rings 4.

[0029] The valve seat 2 is installed on the inner wall of the central flow chamber in the middle of the valve body 1. A valve flap 5 is provided at the bottom of the valve rod 3. The valve rod 3 is movably and sealingly installed in the valve body 1. By rotating the valve rod 3, the valve flap 5 is driven to rise or fall in the valve body 1. When the valve flap 5 falls, it presses tightly on the top of the valve flap 5 to close the central flow chamber. Rubber ring installation grooves are respectively provided on the inner walls of the inlet pipe and the outlet pipe of the valve body 1, and a set of inflatable rubber rings 4 are installed in the corresponding rubber ring installation grooves.

[0030] A handwheel is provided at the top of the valve rod 3. The handwheel includes a hub 101 and a rim 102. The hub 101 is fixed at the center of the rim 102 through a pair of spokes 103. A shaft hole 104 is opened on the hub 101, and a pair of anti-slip protrusions 105 are symmetrically distributed on the inner wall of the rim 102.

[0031] Internal threads are provided on the inner wall of the central flow chamber in the middle of the valve body 1, and external threads are provided on the outer wall of the valve seat 2. The valve seat 2 is threadedly installed on the inner wall of the central flow chamber in the middle of the valve body 1; an annular inclined sealing surface is opened on the inner wall at the top of the valve seat 2, and an annular inclined sealing protrusion matching the annular inclined sealing surface is provided on the lower outer wall of the valve flap 5; one side of the rubber ring installation groove is the open end of the valve body, and the other side of the rubber ring installation groove is the inner cavity of the valve body. The inner wall diameter of the valve body 1 on one side of the rubber ring installation groove is larger than the inner wall diameter of the valve body 1 on the other side of the rubber ring installation groove.

[0032] After the inflatable rubber ring 4 is inflated and expanded, the inner ring cross-section of the inflatable rubber ring 4 is arc-shaped, and the outer ring cross-section of the inflatable rubber ring 4 is rectangular; an air nozzle installation groove is provided on the outer ring of the inflatable rubber ring 4, and an inflation nozzle 6 is provided in the air nozzle installation groove.

[0033] A valve cover is provided at the top of the valve body 1. The valve rod 3 is movably and sealingly installed in the valve cover through packing sealing, and the bottom of the valve rod 3 is located inside the valve body 1; a rubber ring installation groove is provided in the top opening of the valve body 1, and an inflatable rubber ring 4 is provided in the rubber ring installation groove.

[0034] Threaded holes are opened on the outer wall of the hub 101, and locking screws are screwed into the threaded holes to fix the hub 101 at the top of the valve rod.

[0035] Multiple groups of anti-slip patterns are provided on the outer wall of the rim 102.

[0036] A set of arc-shaped anti-slip protrusions 106 are annularly and evenly arranged at the top of the rim 102.

[0037] A cylindrical protrusion 108 is provided at the connection between the spoke 103 and the rim 102. An installation hole is opened at the center of the cylindrical protrusion 108, and a crank 107 is provided in the installation hole.

[0038] The crank 107 is cylindrical.

[0039] A screw is provided at the bottom of the crank 107, and is installed in the mounting hole of the cylindrical protrusion 108 through the screw thread; reinforcing ribs are provided on both sides of the connection between the spoke 103 and the rim 102; a pair of spokes 103 and a pair of anti-slip protrusions 105 are cross-arranged.

[0040] Embodiment 1: Install the valve body 1 on the water pipeline, the water flows into the lower chamber of the valve body 1, flows into the upper chamber along the valve seat 2, and then outputs. When the valve needs to be closed, turn the hand wheel on the top of the valve stem 3, the valve disc 5 moves down, presses on the sealing surface on the top of the valve seat 2, and cuts off the water flow. When the temperature is normal, the inflatable rubber ring 4 expands and fills the rubber ring installation groove. When the temperature drops below zero, the water in the valve freezes, and the gas in the inflatable rubber ring 4 shrinks, and the inflatable rubber ring 4 becomes deflated, leaving space for ice to avoid bursting the valve.

[0041] Install the wheel hub 101 on the valve stem. If long-term installation is required, screw the locking screw into the threaded hole on the outer wall of the wheel hub 101, press against the outer wall of the valve stem, and complete the fixation. When the handwheel is installed on the lateral valve, the crank 107 can be installed in the mounting hole of the cylindrical protrusion 108, and the handwheel can be driven to rotate by the crank. When the handwheel starts to turn, the anti-skid protrusion 105 blocks the staff's hand to prevent slipping. At the same time, the arc-shaped anti-skid protrusion 106 and the anti-skid pattern can both play an auxiliary role in preventing slipping.

Claims

1. A quick-opening stop valve, characterized in that It comprises a valve body (1), a valve seat (2), a valve stem (3) and a set of inflatable rubber rings (4). The valve seat (2) is mounted on the inner wall of the flow cavity in the middle of the valve body (1), a valve disc (5) is arranged at the bottom of the valve stem (3), and the valve stem (3) is movably sealed and mounted in the valve body (1). The valve stem (3) is rotated to drive the valve disc (5) to rise or fall in the valve body (1), and the valve disc (5) is lowered and pressed against the top of the valve disc (5), closing the flow cavity in the middle. Rubber ring mounting grooves are respectively arranged on the inner walls of the inlet pipe and the outlet pipe of the valve body (1), and a group of inflatable rubber rings (4) are mounted in the corresponding rubber ring mounting grooves. A hand wheel is arranged at the top of the valve stem (3), and the hand wheel comprises a hub (101) and a rim (102). The hub (101) is fixed at the center of the rim (102) through a pair of spokes (103). An axial hole (104) is opened on the hub (101), and a pair of anti-slip protrusions (105) are symmetrically distributed on the inner wall of the rim (102).

2. A quick-opening stop valve according to claim 1, characterized in that: An internal thread is provided on the inner wall of the flow cavity in the middle of the valve body (1), and an external thread is provided on the outer wall of the valve seat (2). The valve seat (2) is threadedly mounted on the inner wall of the flow cavity in the middle of the valve body (1); an annular inclined sealing surface is provided on the inner wall at the top of the valve seat (2), and an annular inclined sealing protrusion matching the annular inclined sealing surface is provided on the lower outer wall of the valve disc (5); one side of the rubber ring installation groove is the valve body opening end, and the other side of the rubber ring installation groove is the valve body inner cavity, and the inner wall diameter of the valve body (1) on one side of the rubber ring installation groove is larger than the inner wall diameter of the valve body (1) on the other side of the rubber ring installation groove.

3. A quick-opening stop valve according to claim 2, characterized in that: After the inflatable rubber ring (4) is inflated, the inner ring cross-section of the inflatable rubber ring (4) is arc-shaped, and the outer ring cross-section of the inflatable rubber ring (4) is rectangular; an air nozzle mounting groove is provided on the outer ring of the inflatable rubber ring (4), and an inflatable nozzle (6) is provided in the air nozzle mounting groove.

4. A quick-opening stop valve according to claim 1, characterized in that: A valve cover is arranged on the top of the valve body (1), a valve stem (3) is installed in the valve cover through a seasoning seal, and the bottom of the valve stem (3) is located in the valve body (1); a rubber ring installation groove is arranged in the top opening of the valve body (1), and an inflatable rubber ring (4) is arranged in the rubber ring installation groove.

5. A quick-opening stop valve according to claim 1, characterized in that: A threaded hole is formed on the outer wall of the wheel hub (101), and a locking screw is screwed into the threaded hole to fix the wheel hub (101) on the top of the valve stem.

6. A quick-opening stop valve according to claim 1, characterized in that: A plurality of groups of anti-slip patterns are arranged on the outer wall of the wheel rim (102).

7. A quick-opening stop valve according to claim 1, characterized in that: A group of arc-shaped anti-slip protrusions (106) are evenly distributed in an annular shape on the top of the wheel rim (102).

8. The quick-opening stop valve according to claim 1, characterized in that: A cylindrical protrusion (108) is arranged at the connection between the spoke (103) and the rim (102), a mounting hole is opened at the center of the cylindrical protrusion (108), and a crank (107) is arranged in the mounting hole.

9. A quick-opening stop valve according to claim 8, characterized in that: The crank (107) is cylindrical.

10. A quick-opening stop valve according to claim 9, characterized in that: A screw is provided at the bottom of the crank (107) and is installed in the installation hole of the cylindrical protrusion (108) through the screw thread; reinforcing ribs are respectively provided on both sides of the connection between the spoke (103) and the rim (102); a pair of spokes (103) and a pair of anti-slip protrusions (105) are arranged in a cross shape.

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