Noise elimination check valve with flow adjusting flange

Abstract

The utility model provides a noise elimination check valve with a flow adjusting flange, and relates to the technical field of check valves, the noise elimination check valve comprises a check valve assembly, the check valve assembly is connected with a control assembly, the check valve assembly comprises a valve body, a flow channel is arranged in the valve body, a flashboard connecting shaft is arranged in the flow channel, and the flashboard connecting shaft is provided with a flashboard; the connection control assembly comprises a control handle, the control handle comprises a handheld end and a worm section, the worm section is in meshed connection with a worm gear, and the worm gear is connected with the gate plate connecting shaft. The gate valve has the advantages that due to the fact that the worm gear in the quarter circle shape is arranged, when the worm section is meshed with the worm gear to close or open the gate to the maximum, the situation that the gate is not closed tightly or the opening amplitude of the gate is not large enough due to the fact that the handheld end is rotated excessively is avoided, and therefore fluid leakage can be avoided; and economic loss and safety accidents caused by fluid leakage can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field especially is with flow regulation flange silencing check valve. BACKGROUND

[0002] Check valve is a kind of automatic opening and closing valve, its main function is only to allow medium to flow in one direction, and prevent reverse flow. This valve usually works automatically under the action of fluid pressure, and the valve flap opens when the fluid flows in the positive direction, and closes when the fluid flows in the reverse direction, thereby cutting off the flow, when controlling the flow of fluid, if the fluid flow channel cannot be completely blocked when closing, fluid leakage will occur, causing economic loss, and serious accidents may occur. Therefore, in order to better control the flow and closing of fluid, a manual or electric switch is provided at the inlet front end of the check valve.

[0003] The technical content disclosed in Chinese patent document (publication number: CN215445249U, patent name: long service life butterfly check valve for ship) is that the inner walls of the two protective covers opposite each other are fixedly connected with positioning plates, the bottoms of the two positioning plates are fixedly connected with assembly sliding blocks, the inner bottom walls of the two mounting plates are fixedly connected with assembly sliding grooves in sliding connection with the assembly sliding blocks, after the assembly sliding blocks are slid into the interiors of the assembly sliding grooves until the positioning plates are attached to the inner walls of the mounting plates, the plug blocks on the front and back surfaces of the left protective cover also move into the interiors of the fixed warehouses until they are attached to the right inner walls of the fixed warehouses, the protective cover can be assembled outside the valve body to effectively protect the valve body by rotating the handle, and due to the action of the transmission belt and the transmission wheel, the two screw rods rotate simultaneously, the limiting pieces limit the movable plates, the two movable plates at the top and the two movable plates at the bottom can move to the opposite side until the movable blocks are inserted into the limiting grooves, the fixed blocks can be limited in the fixed warehouses, and the protective cover can be assembled outside the valve body to effectively protect the valve body, thereby improving the service life of the valve body.

[0004] From the above embodiment, it can be known that the butterfly check valve is provided with a rotating handle, which can be used to control the opening or closing of the check valve by rotating the handle during use. However, it is difficult to control to what extent the handle should be rotated to make the butterfly check valve just block the flow channel, so that the butterfly check valve may not completely block the channel when the check valve is closed due to excessive rotation of the handle, which may cause fluid leakage and economic loss or safety accidents. Utility model content

[0005] The utility model overcomes the defects in the prior art, a quarter of the worm wheel is arranged, when the worm segment is engaged with the worm wheel to close or open the gate to the maximum, the gate cannot be closed tightly or the gate cannot be opened to a large enough extent due to the excessive rotation of the hand holding end, thus fluid leakage can be avoided, and economic losses and safety accidents caused by fluid leakage can be prevented.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical scheme:

[0007] The noise reduction check valve with flow regulating flange comprises a check valve assembly, the check valve assembly is connected with a control assembly, the check valve assembly comprises a valve body, a flow channel is arranged in the valve body, a gate shaft is arranged in the flow channel, and a gate is arranged on the gate shaft; the control assembly comprises a control handle, the control handle comprises a hand holding end and a worm segment, the worm segment is engaged with a worm wheel, and the worm wheel is connected with the gate shaft.

[0008] The worm wheel is a quarter of the umbrella-shaped worm wheel, the operator rotates the hand holding end to rotate the worm segment, the worm segment is engaged with the worm wheel to rotate the gate shaft, when the gate completely blocks the flow channel, the worm segment is not engaged with the worm wheel, and the gate does not rotate.

[0009] When the operator rotates the hand holding end in the opposite direction to make the gate parallel to the flow direction of the fluid in the flow channel, the opening of the flow channel is the largest, the flow of the fluid is the largest, and when the hand holding end is rotated in the same direction, the worm segment is not engaged with the worm wheel, and the gate does not rotate.

[0010] Further, a control connecting hole is further arranged in the check valve assembly, the control connecting hole is perpendicular to the flow channel, and the gate shaft is rotationally connected in the control connecting hole.

[0011] Further, a display disc is further arranged in the control assembly, the display disc is provided with a scale for displaying the angle of the gate rotating in the flow channel, the display disc is rotationally connected with an indicating needle, and the gate shaft is connected with the indicating needle.

[0012] Further, the control assembly comprises a base and an upper cover, the worm segment, the worm wheel and the display disc are arranged in the space surrounded by the base and the upper cover, the upper cover is embedded with a transparent display plate, and the transparent display plate is located directly above the display disc.

[0013] Further, one end of the flow channel is provided with a check door, the check door is pushed open by the fluid flowing from the flow channel to the check door, and the check door is pushed to the flow channel by the fluid flowing from the side, away from the flow channel, of the check door to the check door.

[0014] Further, the valve body is rotationally connected with the check handle, and a spring is arranged between the check handle and the check door.

[0015] Further, the check door comprises a door plate, a sliding insertion column is arranged on the side of the door plate facing the flow channel, a guide rod is arranged on the side of the door plate away from the flow channel, the guide rod is inserted into the spring, and the guide rod is slidingly inserted with the check handle.

[0016] Further, the side of the door plate facing the flow channel is provided with a sealing gasket.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. The quarter-round worm wheel is arranged, when the worm segment is engaged with the worm wheel to close or open the gate plate to the maximum, the gate plate cannot be closed too tightly or the opening range of the gate plate cannot be large enough due to the excessive rotation of the handle end, thus the fluid leakage can be avoided, and the economic loss and safety accidents caused by the fluid leakage can be prevented.

[0019] 2. The check door is arranged, the fluid flowing from the flow channel to the check door can push the check door open, and the fluid flowing from the side of the check door away from the flow channel to the check door can push the check door to the direction of the flow channel, thus the check door can prevent the fluid from flowing back, and the fluid can only flow in one direction. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the utility model, together with embodiments of the utility model, to explain the utility model, and do not constitute a limitation to the utility model, and in the drawings:

[0021] Fig. 1 is a general schematic view of the check valve of the embodiment of the utility model;

[0022] Fig. 2 is an exploded schematic view of the check valve of the embodiment of the utility model;

[0023] Fig. 3 is a sectional view of the check valve of the embodiment of the utility model;

[0024] Fig. 4 is an exploded schematic view of the control assembly of the embodiment of the utility model.

[0025] In the figure: 1. Check valve assembly; 101. Valve body; 1011. Flow channel; 1012. Control connecting hole; 103. Gate coupling; 1031. Gate; 104. Sealing gasket; 105. Check door; 1051. Door panel; 1052. Sliding column; 1053. Guide rod; 106. Spring; 107. Check handle; 2. Control assembly; 201. Control handle; 2011. Handshake end; 2012. Worm segment; 202. Worm gear; 203. Display panel; 2031. Indicator needle; 204. Base; 205. Upper cover; 206. Transparent display panel. DETAILED DESCRIPTION

[0026] The preferred embodiments of the utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model and are not used to limit the utility model.

[0027] like Figs. 1 to 4 As shown, a flanged muffler check valve with flow regulation includes a check valve assembly 1, which is connected to a control assembly 2. The check valve assembly 1 includes a valve body 101, a flow channel 1011 and a control connection hole 1012 are provided inside the valve body 101, the control connection hole 1012 is perpendicular to the flow channel 1011, a gate coupling 103 is rotatably connected to the control connection hole 1012, a gate coupling 103 is provided inside the flow channel 1011, and the gate coupling 103 is provided with a gate 1031; the connection control assembly 2 includes a control handle 201, the control handle 201 includes a handshake end 2011 and a worm segment 2012, the worm segment 2012 is meshed and connected with a worm gear 202, and the worm gear 202 is connected to the gate coupling 103;

[0028] The worm gear 202 is an umbrella-shaped worm gear with a quarter of a circle. When the operator rotates the handgrip end 2011, the worm segment 2012 rotates. The worm segment 2012 meshes with the worm gear 202, causing the gate coupling 103 to rotate. When the gate 1031 completely blocks the flow channel 1011, further rotation of the handgrip end 2011 causes the worm segment 2012 to no longer mesh with the teeth of the worm gear 202, and the gate 1031 no longer rotates.

[0029] When the operator rotates the handshake end 2011 in the opposite direction so that the gate 1031 is parallel to the flow direction of the fluid in the flow channel 1011, the internal opening of the flow channel 1011 is the largest and the fluid flow rate is the largest. At this time, if the handshake end 2011 is rotated in the same direction again, the teeth of the worm segment 2012 and the worm wheel 202 will not engage and intersect, and the gate 1031 will no longer rotate.

[0030] Therefore, when the worm segment 2012 meshes with the worm wheel 202 to close or open the shutter 1031 to the maximum, the shutter 1031 will not be closed too tightly or the shutter 1031 will not be opened to a sufficient extent due to the transitional rotation of the handle end 2011, so that fluid leakage can be avoided, and economic losses and safety accidents caused by fluid leakage can be prevented.

[0031] The display disc 203 is further arranged in the connecting control assembly 2, and is provided with scales to display the angle of rotation of the shutter 1031 in the flow channel 1011. The display disc 203 is rotationally connected with an indicating needle 2031, and the shutter connecting shaft 103 is connected with the indicating needle 2031. When the rotation control handle 201 is rotated, the indicating needle 2031 can also rotate, so that the condition of the shutter 1031 in the flow channel 1011 can be displayed in real time.

[0032] The connecting control assembly 2 comprises a base 204 and an upper cover 205. The worm segment 2012, the worm wheel 202 and the display disc 203 are arranged in the space surrounded by the base 204 and the upper cover 205. The upper cover 205 is embedded with a transparent display plate 206, which is located directly above the display disc 203. Therefore, the worm segment 2012, the worm wheel 202 and the display disc 203 are all sealed and surrounded, so that the worm segment 2012, the worm wheel 202 and the display disc 203 can be prevented from being rusted or contaminated by dust, and the accuracy of the operation of the check valve is ensured. The transparent display plate 206 can also facilitate people to monitor the direction of the indicating needle 2031 in real time.

[0033] One end of the flow channel 1011 is provided with a check door 105. Fluid flowing from the flow channel 1011 to the check door 105 can push the check door 105 open, and fluid flowing from the side of the check door 105 away from the flow channel 1011 to the check door 105 can push the check door 105 closed in the direction of the flow channel 1011. Therefore, the check door 105 can prevent fluid from flowing back, and control the fluid to flow in only one direction.

[0034] The valve body 101 is rotationally connected with a check handle 107, and a spring 106 is arranged between the check handle 107 and the check door 105. When fluid flows from the flow channel 1011 to the check door 105, the spring 106 is compressed due to the pressure of the fluid on the check door 105. Therefore, the check door 105 can move in the direction of the check handle 107, so that a gap is formed between the check handle 107 and the flow channel 1011, and the fluid can flow out of the gap.

[0035] The check door 105 comprises a door plate 1051, and a sliding insertion column 1052 is arranged on the side of the door plate 1051 which is close to the flow channel 1011, and the sliding insertion column 1052 plays a guiding role when the check door 105 is connected with the flow channel 1011, so that the check door 105 cannot be dislocated when the check door 105 blocks one end of the flow channel 1011, and the check door 105 can block the flow channel 1011 from the coaxial direction of the flow channel 1011 every time, so that the closing effect of the check door 105 and the flow channel 1011 is better.

[0036] A guide rod 1053 is arranged on the side of the door plate 1051 which is far away from the flow channel 1011, the guide rod 1053 is inserted into the spring 106, and the guide rod 1053 is slidingly inserted into the check handle 107, so that the connection between the check door 105 and the check handle 107 is more stable.

[0037] A sealing gasket 104 is arranged on the side of the door plate 1051 which is close to the flow channel 1011, and the sealing gasket 104 plays a sealing role when the check door 105 blocks one end of the flow channel 1011, so as to avoid fluid leakage, and on the other hand, the sealing gasket 104 plays a sound-absorbing role when the check door 105 hits one end of the flow channel 1011, so that the check door 105 will not produce large noise when hitting the flow channel 1011.

[0038] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in each embodiment, or make equivalent replacement to part of the technical features, but any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A silent check valve with flow regulating flange, characterized in that, The application relates to a check valve assembly (1) connected with a control assembly (2), wherein the check valve assembly (1) comprises a valve body (101) internally provided with a flow channel (1011), the flow channel (1011) is internally provided with a gate shaft (103), and the gate shaft (103) is provided with a gate (1031); the control assembly (2) comprises a control handle (201), the control handle (201) comprises a handle end (2011) and a worm segment (2012), the worm segment (2012) is in meshing connection with a worm wheel (202), and the worm wheel (202) is connected with the gate shaft (103). The worm wheel (202) is a quarter-circular umbrella-shaped worm wheel, the handle end (2011) is rotated by an operator to rotate the worm segment (2012), the worm segment (2012) is in meshing connection with the worm wheel (202) to rotate the gate shaft (103), when the gate (1031) completely blocks the flow channel (1011), the handle end (2011) is continuously rotated, the worm segment (2012) is not in meshing connection with the worm wheel (202), and the gate (1031) is not rotated. When the handle end (2011) is rotated in the reverse direction by the operator to make the gate (1031) parallel to the flow direction of fluid in the flow channel (1011), the opening of the flow channel (1011) is the largest, the fluid flow is the largest, the handle end (2011) is rotated in the same direction, the worm segment (2012) is not in meshing connection with the worm wheel (202), and the gate (1031) is not rotated.

2. The flow-regulated-flanged silent check valve of claim 1, wherein, The check valve assembly (1) is internally provided with a control connecting hole (1012) which is perpendicular to the flow channel (1011), and the gate shaft (103) is rotationally connected in the control connecting hole (1012).

3. The flow-regulated-flanged silent check valve of claim 2, wherein, The control assembly (2) is internally provided with a display disc (203) provided with a scale for displaying the rotation angle of the gate (1031) in the flow channel (1011), the display disc (203) is rotationally connected with an indicating needle (2031), and the gate shaft (103) is connected with the indicating needle (2031).

4. The flow-regulated-flanged silent check valve of claim 3, wherein, The control assembly (2) comprises a base (204) and an upper cover (205), the worm segment (2012), the worm wheel (202) and the display disc (203) are arranged in a space surrounded by the base (204) and the upper cover (205), the upper cover (205) is embedded with a transparent display plate (206), and the transparent display plate (206) is located directly above the display disc (203).

5. The silent check valve with flow regulating flange according to any one of claims 1 to 4, characterized in that, One end of the flow channel (1011) is provided with a check door (105), fluid flowing from the flow channel (1011) to the check door (105) can push the check door (105) open, and fluid flowing from the side, away from the flow channel (1011), of the check door (105) to the check door (105) can push the check door (105) to the flow channel (1011).

6. The flow-regulating-flanged silent check valve of claim 5, wherein, The valve body (101) is rotationally connected with a check handle (107), and a spring (106) is arranged between the check handle (107) and a check door (105).

7. The flow-regulating-flanged silent check valve of claim 6, wherein, The check door (105) comprises a door plate (1051), one side of the door plate (1051) facing the flow channel (1011) is provided with a sliding insertion column (1052), and the other side of the door plate (1051) away from the flow channel (1011) is provided with a guide rod (1053), the guide rod (1053) is inserted into the spring (106), and the guide rod (1053) is slidingly inserted with the check handle (107).

8. The flow-regulated-flanged silent check valve of claim 7, wherein, One side of the door plate (1051) facing the flow channel (1011) is provided with a sealing gasket (104).

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