Vertical check valve

Abstract

The utility model discloses a vertical check valve, and belongs to the technical field of ball valves. The check valve aims at achieving the technical purposes of improving the use reliability and convenience of the check valve and being easy to overhaul. According to the technical scheme, the ball valve comprises a ball valve assembly, the ball valve assembly comprises a ball valve body and a switch assembly, the ball valve body is provided with a water inlet and a water outlet, and the switch assembly is used for controlling connection and disconnection between the water inlet and the water outlet. The water outlet channel is provided with an annular groove part, a first sealing ring is fastened in the annular groove part, a steel ball is supported above the first sealing ring, and the steel ball abuts against the first sealing ring through gravity and blocks the water through hole of the annular seat part, and the water outlet valve has the advantages of being easy to use, convenient to assemble and easy to overhaul.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a vertical check valve. Background Art

[0002] Check valves and ball valves are two types of valves widely used in fluid control systems, each playing an important role in their respective fields. Check valves, also known as one-way valves or reverse valves, are primarily used to prevent backflow of media in pipelines and ensure the flow direction of the fluid. They are widely used in various fluid systems to prevent contamination, temperature rise, or mechanical damage caused by backflow.

[0003] To achieve the check function on the ball valve, the ball valve structure needs to be improved. However, the existing check valve is very inconvenient to repair because the check valve is prone to valve core wear or sealing ring wear, resulting in unreliable check function. Utility Model Content

[0004] In order to solve the above-mentioned technical problems and shortcomings: how to improve the reliability, convenience and ease of maintenance of the check valve, the present invention provides a vertical check valve.

[0005] To achieve the above-mentioned and other related purposes, the present invention adopts the following technical solutions:

[0006] A vertical check valve includes a ball valve assembly, which includes a ball valve body and a switch assembly. The ball valve body has a water inlet and a water outlet. The switch assembly is used to control the on-off between the water inlet and the water outlet. The water outlet of the ball valve body is a water outlet channel, and a ring seat portion is provided on the water outlet channel. A ring groove portion is provided on the water outlet channel. A first sealing ring is fastened in the ring groove portion. A steel ball is supported above the first sealing ring. The steel ball rests against the first sealing ring through gravity and blocks the water hole of the ring seat portion.

[0007] Preferably, the diameter of the water hole is smaller than the diameter of the water outlet channel, and the diameter of the steel ball is smaller than the diameter of the water outlet channel and larger than the diameter of the sealed water hole.

[0008] Preferably, the edge of the water hole is provided with a flared surface.

[0009] Preferably, the diameter of the steel ball is 3-4 times that of the water hole.

[0010] Preferably, a blocking rod is provided on the water outlet channel of the ball valve body.

[0011] Preferably, a fastening hole is provided on the water outlet channel of the ball valve body, and the blocking rod is inserted into the fastening hole to intercept the steel ball.

[0012] Preferably, an external thread is provided on the outer side of the water outlet, and a reducing tee pipe is mounted on the external thread.

[0013] Preferably, the switch assembly includes a ball core, an inner octagonal cap, an upper valve seat, a lower valve seat, a valve stem, a packing, a tightening cap, a gasket, a wrench, and a lock nut. The upper valve seat is arranged below the ring seat portion, the ball core is located in the water inlet channel and is tightened by the inner octagonal cap through the lower valve seat, the valve stem is inserted into the ball core and sealed by an O-ring and a ball valve body, the valve stem is sleeved with a packing, the tightening cap is assembled on the ball valve body and tightens the packing, the gasket is clamped on the valve stem, and the wrench is fastened to the end of the valve stem through the lock nut.

[0014] In summary, the present invention has at least one of the following beneficial technical effects:

[0015] 1. In order to achieve a reliable check function and facilitate assembly and maintenance, the vertical check valve in this solution needs to be installed and used in an upright position according to the installation environment. It is also because of this special installation posture that a reliable check function can be achieved. When the switch assembly is turned on, the impact of the water pressure can make the water flow push the steel ball, so that water can flow in one direction. If the water pressure is insufficient or there is a lack of water, the steel ball will automatically fall back due to gravity and block the water hole, and the water cannot flow in the opposite direction.

[0016] 2. This structural component is easy to assemble, simple to use, very easy to maintain and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Side view of;

[0019] Figure 3 yes Figure 1 Left view of;

[0020] Figure 4 yes Figure 3 Cross-sectional view at AA.

[0021] Description of the reference numerals of the main components:

[0022] 1. Ball valve assembly; 11. Ball valve body; 111. Water inlet; 112. Water outlet; 113. Water outlet channel; 114. Ring seat; 115. Ring groove; 116. Water hole; 117. Flared surface; 118. Fastening hole; 119. External thread; 12. Switch assembly; 121. Ball core; 122. Inner octagonal cap; 123. Upper valve seat; 124. Lower valve seat; 125. Valve stem; 126. Packing; 127. Fastening cap; 128. Gasket; 129. Wrench; 2. First sealing ring; 3. Steel ball; 4. Stop rod; 5. Reducing tee; 6. Lock nut. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component can be changed at will, and the component layout may also be more complex.

[0025] The following is combined with Figure 1-4 The specific implementation methods of the present invention are further described.

[0026] Example:

[0027] The invention discloses a vertical check valve, which is combined with 1, Figure 2 and Figure 3 , including a ball valve assembly 1, the ball valve assembly 1 includes a ball valve body 11 and a switch assembly 12. Figure 4 As can be seen, the ball valve body 11 has a water inlet 111 and a water outlet 112, and the switch assembly 12 is used to control the on-off between the water inlet 111 and the water outlet 112. The water outlet 112 of the ball valve body 11 is a water outlet channel 113, and a ring seat portion 114 is provided on the water outlet channel 113. A ring groove portion 115 is provided on the water outlet channel 113, and a first sealing ring 2 is fastened in the ring groove portion 115. A steel ball 3 is supported above the first sealing ring 2. The steel ball 3 rests against the first sealing ring 2 by gravity and blocks the water hole 116 of the ring seat portion 114.

[0028] The working principle is as follows: To achieve a reliable check valve function and facilitate assembly and maintenance, the vertical check valve in this solution needs to be installed in an upright position according to the installation environment. It is this special installation position that can achieve a reliable check valve function. When the switch assembly 12 is opened, the impact of the water pressure can cause the water flow to push the steel ball 3, thereby allowing water to flow in one direction. If the water pressure is insufficient or there is a lack of water, the steel ball 3 will automatically fall back due to gravity and block the water hole 116, preventing water from flowing in the opposite direction.

[0029] The first sealing ring 2 is an O-ring made of rubber.

[0030] Specifically, refer to Figure 4 As shown, the diameter D2 of the water hole 116 is smaller than the diameter of the water outlet channel 113, and the diameter D1 of the steel ball 3 is smaller than the diameter of the water outlet channel 113 and larger than the diameter of the sealed water hole 116. The edge of the water hole 116 is provided with a flared surface 117. The design of the flared surface 117 can effectively guide the water flow. The water pressure at the water hole 116 is high, and gradually decreases through the flared surface 117, thereby effectively pushing the steel ball 3 away. Then, when the water flow acts in the opposite direction on the steel ball 3, the steel ball 3 can block the water hole 116 more quickly, so that the steel ball 3 and the first sealing ring 2 form a seal.

[0031] First, the smaller the diameter of water hole 116, the greater the impact on steel ball 3 under a certain water pressure, making it easier to dislodge steel ball 3. However, if the diameter of water hole 116 is too small, the water flow rate will be reduced, and steel ball 3 will be less likely to block. The diameter D1 of steel ball 3 is 3-4 times the diameter D2 of water hole 116. In this case, it can work more effectively, allowing steel ball 3 to move freely and ensuring a reliable check seal.

[0032] To prevent excessive water flow from dislodging the steel ball 3 too far, a retaining rod 4 is provided on the outlet channel 113 of the ball valve body 11. This prevents the steel ball 3 from escaping its secure movement space. For ease of assembly, a fastening hole 118 is preferably provided on the outlet channel 113 of the ball valve body 11. The retaining rod is inserted into the fastening hole 118 to intercept the steel ball 3.

[0033] In order to be able to connect external pipes and perform maintenance according to user needs, an external thread 119 is provided on the outside of the water outlet 112, and a reducing tee pipe 5 is assembled on the external thread 119.

[0034] More specifically, the switch assembly 12 includes a ball core 121, an inner octagonal cap 122, an upper valve seat 123, a lower valve seat 124, a valve stem 125, a packing 126, a tightening cap 127, a gasket 128, a wrench 129, and a lock nut 6. The upper valve seat 123 is arranged below the ring seat portion 114. The ball core 121 is located in the water inlet channel and is tightened by the inner octagonal cap 122 through the lower valve seat 124. The valve stem 125 is inserted into the ball core 121 and is sealed with the ball valve body 11 through an O-ring. The valve stem 125 is sleeved with a packing 126. The tightening cap 127 is assembled on the ball valve body 11 and tightens the packing 126. The gasket 128 is clamped on the valve stem 125. The wrench 129 is fastened to the end of the valve stem 125 through the lock nut 6.

[0035] During assembly, the tightness can be adjusted by rotating the inner octagonal cap 122. This ensures that the ball core 121 operates in a reliable sealing state. The upper valve seat 123 and the lower valve seat 124 can be made of rubber. The packing 126 can also be made of rubber to improve the sealing effect.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, any equivalent variations based on the structure, shape, or principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A vertical check valve, comprising a ball valve assembly (1), wherein the ball valve assembly (1) comprises a ball valve body (11) and a switch assembly (12), wherein the ball valve body (11) has a water inlet (111) and a water outlet (112), and the switch assembly (12) is used to control the on-off between the water inlet (111) and the water outlet (112), and is characterized in that: The water outlet (112) of the ball valve body (11) is a water outlet channel (113), a ring seat portion (114) is provided on the water outlet channel (113), a ring groove portion (115) is provided on the water outlet channel (113), a first sealing ring (2) is fastened in the ring groove portion (115), a steel ball (3) is supported above the first sealing ring (2), and the steel ball (3) is pressed against the first sealing ring (2) by gravity and blocks the water through hole (116) of the ring seat portion (114).

2. The vertical check valve according to claim 1, characterized in that: The caliber of the water through hole (116) is smaller than the caliber of the water outlet channel (113), and the diameter of the steel ball (3) is smaller than the caliber of the water outlet channel (113) and larger than the caliber of the sealed water through hole (116).

3. The vertical check valve according to claim 2, characterized in that: The edge of the water hole (116) is provided with a flared surface (117).

4. The vertical check valve according to claim 2, characterized in that: The diameter of the steel ball (3) is 3-4 times that of the water hole (116).

5. The vertical check valve according to claim 1, characterized in that: A blocking rod (4) is provided on the water outlet channel (113) of the ball valve body (11).

6. The vertical check valve according to claim 5, characterized in that: A fastening hole (118) is provided on the water outlet channel (113) of the ball valve body (11), and the blocking rod is inserted into the fastening hole (118) to intercept the steel ball (3).

7. The vertical check valve according to claim 1, characterized in that: An external thread (119) is provided on the outer side of the water outlet (112), and a reducing tee pipe (5) is mounted on the external thread (119).

8. The vertical check valve according to claim 1, characterized in that: The switch assembly (12) comprises a ball core (121), an inner octagonal cap (122), an upper valve seat (123), a lower valve seat (124), a valve stem (125), a filler (126), a tightening cap (127), a gasket (128), a wrench (129), and a locking nut (6). The upper valve seat (123) is arranged below the ring seat portion (114). The ball core (121) is located at the water inlet channel and is secured by the inner octagonal cap (122). The valve stem (125) is inserted into the ball core (121) and sealed with the ball valve body (11) through the lower valve seat (124). The packing (126) is sleeved on the valve stem (125). The tightening cap (127) is assembled on the ball valve body (11) and presses against the packing (126). The gasket (128) is clamped on the valve stem (125). The wrench (129) is fastened to the end of the valve stem (125) through the anti-loosening nut (6).

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