Gas pipeline flow adjusting device

Abstract

The utility model relates to the technical field of flow regulating valves, in particular to a gas pipeline flow regulating device, a knob drives a transmission rod to rotate, the transmission rod drives a gear to rotate, and due to the fact that the gear is meshed with two racks, when the gear rotates, the racks drag a valve element to slide in a sealing shell, and the sealing shell is sealed. When the two valve elements slide outwards at the same time, more communicating holes can be blocked, the space for containing fuel gas in the sealing shell is reduced, channels for fuel gas to flow are reduced, and when the valve elements slide inwards, more communicating holes can be communicated with the containing space in the sealing shell, and when air enters the sealing shell, the air is in contact with the valve elements before being in contact with the valve elements, so that the sealing shell is more smooth. When colliding with the valve element, the fuel gas flows in the opposite direction and collides with the entering fuel gas, the rest of the fuel gas flows out along the communicating hole, and therefore the flow speed of the fuel gas is reduced, the flow speed of the fuel gas is reduced through the backflow effect generated after the fuel gas collides with the valve element, and the effect of avoiding fuel gas leakage caused by connection disengagement is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow regulating valves, in particular to a gas pipeline flow regulating device. Background Art

[0002] In gas pipelines, a gas flow regulating device is usually used to regulate the gas flow. The cross-sectional area of ​​the gas passing through the valve is controlled by changing the gap between the valve core and the valve cover, thereby achieving precise regulation of the gas flow.

[0003] Existing Chinese patent: A gas flow regulating device, patent number: CN207830694U, comprising a valve body, a surface of one side of the valve body is provided with an air inlet, an air inlet pipe is fixedly installed on the air inlet, a surface of the other side of the valve body is provided with an air outlet, an air outlet pipe is fixedly installed on the air outlet, an inner surface of the valve body is provided with an internal thread, an end cover is detachably connected to the top of the valve body by bolts, a threaded sleeve is fixedly connected to the middle part of the top of the end cover, a screw is threadedly connected to the threaded sleeve, the utility model provides a blocking disk, and the blocking disk is driven to move by rotating the screw, so that the size of the air inlet and the air outlet can be changed, thereby changing the gas flow; the valve body is threadedly connected to the blocking disk, and the screw is threadedly connected to the threaded sleeve, so that the device needs to use a large force to rotate when adjusting the flow, to prevent children from opening it easily due to curiosity, thereby improving the safety of the device.

[0004] However, during the implementation of the above technical solution, it was found that there are at least the following technical problems: when the inlet and outlet of the above-mentioned regulating device become smaller, the pressure in the pipeline remains unchanged, which will increase the flow rate of the gas in the pipeline. If the gas flow rate is too high, the connection between the device and the pipeline will be impacted, which may cause the connection to fall off and cause gas leakage. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a gas pipeline flow regulating device to solve the technical problem that when the inlet and outlet of the above-mentioned regulating device become smaller, the pressure in the pipeline remains unchanged, thereby increasing the flow rate of the gas in the pipeline. If the gas flow rate is too high, the connection between the device and the pipeline will be impacted, which may cause the connection to fall off and cause gas leakage.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A gas pipeline flow regulating device comprises a valve housing, wherein two sealing housings are symmetrically fixedly installed inside the valve housing, a plurality of communicating holes are provided on the two sealing housings, valve cores are slidably installed inside the two sealing housings, racks are fixedly installed on the side ends of the two valve cores, a transmission rod is rotatably installed inside the valve housing, a gear is fixedly installed on the bottom end of the transmission rod; the gear is meshed with the two racks, two sealing rings are fixedly installed on the top end of the transmission rod, a knob is fixedly installed on the top end of the transmission rod, and a plurality of blocks are symmetrically slidably installed on both ends of the valve housing.

[0010] Preferably, two swivels are symmetrically mounted on both ends of the valve housing.

[0011] Preferably, two sealing gaskets are symmetrically fixedly mounted at both ends of the valve housing.

[0012] (III) Beneficial effects

[0013] 1. When connecting and using, you need to first insert the flange of the gas pipeline into both ends of the valve housing, rotate the swivel, and the swivel pushes the inclined surface of the block through the inclined surface of the inner wall, so that multiple blocks slide inward at the same time. Multiple blocks clamp the flange of the pipeline from multiple directions, so that the flange is pressed tightly against the sealing gasket, so that the pipeline and the valve housing are sealed and connected, so that the gas inside one end of the pipeline can enter the other pipeline through the valve housing, and the block can clamp the pipeline by rotating the swivel, achieving the effect of quick installation and use.

[0014] 2. When the gas flow rate needs to be adjusted, the knob is rotated to drive the transmission rod to rotate through the knob, and the transmission rod will drive the gear to rotate. Since the gear is meshed with the two racks, the rack will drag the valve core to slide inside the sealed shell when the gear rotates. When the two valve cores slide outward at the same time, more connecting holes will be blocked, and the space for accommodating gas in the sealed shell will be reduced, which will reduce the channel for gas flow. On the contrary, the inward sliding of the valve core can make more connecting holes connected with the accommodating space in the sealed shell. When air enters the sealed shell, it will contact the valve core first. When it hits the valve core, it will flow in the opposite direction and collide with the incoming gas. The remaining gas will flow out along the connecting holes, thereby reducing the flow rate of the gas. The reflux effect generated by the gas hitting the valve core is used to reduce the gas flow rate, thereby achieving the effect of avoiding gas leakage caused by connection falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the valve housing of the utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the valve housing of the utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the swivel of the utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the sealing shell of the utility model.

[0020] Legend: 1. Valve housing; 2. Sealing housing; 3. Connecting hole; 4. Valve core; 5. Rack; 6. Transmission rod; 7. Gear; 8. Sealing ring; 9. Knob; 11. Swivel; 12. Sealing gasket; 13. Block. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a gas pipeline flow regulating device, which effectively solves the above-mentioned regulating device. When the inlet and outlet become smaller, the pressure in the pipeline remains unchanged, so the flow rate of the gas in the pipeline will increase. If the gas flow rate is too high, the connection between the device and the pipeline will be impacted, which may cause the connection to fall off and cause gas leakage. When connected and used, it is necessary to first insert the flange of the gas pipeline into the two ends of the valve shell, rotate the swivel, and the swivel pushes the inclined surface of the block through the inclined surface of the inner wall, so that multiple blocks slide inward at the same time. Multiple blocks clamp the flange of the pipeline from multiple directions, so that the flange is pressed tightly on the sealing gasket, so that the pipeline and the valve shell are sealed and connected, so that the gas inside the pipeline at one end can enter the other pipeline through the valve shell, and the block can clamp the pipeline by rotating the swivel, so as to achieve the effect of quick installation and use. When the gas flow needs to be adjusted, the knob is rotated to drive the transmission rod to rotate, and the transmission rod will drive the gear to rotate. Since the gear is meshed with the two racks, the rack will drag the valve core to slide inside the sealed shell when the gear rotates. When the two valve cores slide outward at the same time, more connecting holes will be blocked, and the space for accommodating gas in the sealed shell will be reduced, which will reduce the channel for gas flow. The inward sliding of the valve core is the opposite, which can enable more connecting holes to be connected with the accommodating space in the sealed shell. When air enters the sealed shell, it will contact the valve core first. When it hits the valve core, it will flow in the opposite direction and collide with the incoming gas. The remaining gas will flow out along the connecting holes, thereby reducing the flow rate of the gas. The reflux effect caused by the gas hitting the valve core is used to reduce the gas flow rate, thereby achieving the effect of avoiding gas leakage caused by connection falling off.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in the embodiment of the present application effectively solves the technical problem of the above-mentioned regulating device. When the inlet and outlet become smaller, since the pressure in the pipeline remains unchanged, the flow rate of the gas in the pipeline will increase. If the gas flow rate is too large, the connection between the device and the pipeline will be impacted, which may cause the connection to fall off and cause gas leakage. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a gas pipeline flow regulating device, including a valve shell 1, in which two sealing shells 2 are symmetrically fixedly installed, and a plurality of connecting holes 3 are opened on the two sealing shells 2. Valve cores 4 are slidably installed inside the two sealing shells 2.

[0025] The side ends of the two valve cores 4 are fixedly mounted with racks 5, and a transmission rod 6 is rotatably mounted inside the valve housing 1. A gear 7 is fixedly mounted on the bottom end of the transmission rod 6; the gear 7 is meshed with the two racks 5, and two sealing rings 8 are fixedly mounted on the top end of the transmission rod 6.

[0026] A knob 9 is fixedly installed on the top of the transmission rod 6, a plurality of blocks 13 are symmetrically slidably installed at both ends of the valve housing 1, two swivel rings 11 are symmetrically rotatably installed at both ends of the valve housing 1, and two sealing gaskets 12 are symmetrically fixedly installed at both ends of the valve housing 1.

[0027] Working principle:

[0028] The first step is to insert the flange of the gas pipeline into the two ends of the valve shell 1 when connecting and using. The swivel 11 is rotated. The swivel 11 pushes the inclined surface of the block 13 through the inclined surface of the inner wall, so that multiple blocks 13 slide inward at the same time. Multiple blocks 13 clamp the flange of the pipeline from multiple directions, so that the flange is pressed tightly against the sealing gasket 12, so that the pipeline and the valve shell 1 are sealed and connected, so that the gas inside one end of the pipeline can enter the other pipeline through the valve shell 1, and the block 13 can be clamped on the main pipeline by rotating the swivel 11, so as to achieve the effect of quick installation and use.

[0029] In the second step, when the gas flow rate needs to be adjusted, the knob 9 is rotated to drive the transmission rod 6 to rotate through the knob 9, and the transmission rod 6 will drive the gear 7 to rotate. Since the gear 7 is meshed with the two racks 5, the racks 5 will drag the valve core 4 to slide inside the sealed shell 2 when the gear 7 rotates. When the two valve cores 4 slide outward at the same time, more connecting holes 3 will be blocked, and the space for accommodating gas in the sealed shell 2 will be reduced, which will reduce the channel for gas flow. The inward sliding of the valve core 4 is the opposite, which can make more connecting holes 3 connected with the accommodating space in the sealed shell 2. When air enters the sealed shell 2, it will contact the valve core 4 first. When it hits the valve core 4, it will flow in the opposite direction and collide with the incoming gas. The remaining gas will flow out along the connecting hole 3, thereby reducing the flow rate of the gas. The reflux effect generated by the gas hitting the valve core 4 is used to reduce the gas flow rate, thereby achieving the effect of avoiding gas leakage caused by connection falling off.

[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A gas pipeline flow control device, comprising a valve housing (1), characterized in that Two sealing shells (2) are symmetrically fixedly installed inside the valve shell (1), and a plurality of connecting holes (3) are provided on the two sealing shells (2). Valve cores (4) are slidably installed inside the two sealing shells (2), and racks (5) are fixedly installed on the side ends of the two valve cores (4). A transmission rod (6) is rotatably installed inside the valve shell (1), and a gear (7) is fixedly installed on the bottom end of the transmission rod (6); The gear (7) is meshed with the two racks (5).

2. A gas pipeline flow regulating device as claimed in claim 1, characterized in that: Two sealing rings (8) are fixedly mounted on the top end of the transmission rod (6).

3. A gas pipeline flow regulating device as claimed in claim 1, characterized in that: A knob (9) is fixedly mounted on the top end of the transmission rod (6).

4. A gas pipeline flow regulating device as claimed in claim 1, characterized in that: A plurality of clamping blocks (13) are symmetrically and slidably mounted on both ends of the valve housing (1).

5. A gas pipeline flow regulating device as claimed in claim 1, characterized in that: Two rotating rings (11) are symmetrically mounted on both ends of the valve housing (1).

6. A gas pipeline flow regulating device as claimed in claim 1, characterized in that: Two sealing gaskets (12) are symmetrically fixedly mounted at both ends of the valve housing (1).

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