CN218326399U - Gear rack transmission type emergency cut-off valve for gas - Google Patents
Gear rack transmission type emergency cut-off valve for gas Download PDFInfo
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- CN218326399U CN218326399U CN202222523616.XU CN202222523616U CN218326399U CN 218326399 U CN218326399 U CN 218326399U CN 202222523616 U CN202222523616 U CN 202222523616U CN 218326399 U CN218326399 U CN 218326399U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 9
- 239000002737 fuel gas Substances 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to a gear rack transmission type emergency cut-off valve for fuel gas, which comprises a valve body; a first valve rod is arranged in the valve body in a vertically sliding manner, the lower end of the first valve rod is positioned in the connecting channel, and the upper end of the first valve rod is positioned outside the valve body; the first valve rod is arranged in a hollow mode; a second valve rod is arranged at the upper end of the first valve rod, the second valve rod and the first valve rod are arranged at intervals up and down, and a rotating disc is arranged between the first valve rod and the second valve rod; the first valve rod is connected with the second valve rod through a connecting handle; the second valve rod is arranged in a hollow mode; a third valve rod is arranged in the first valve rod and the second valve rod in a sliding mode, the upper end of the third valve rod is located above the second valve rod, the lower end of the third valve rod is located in the connecting channel, and a baffle for plugging a valve port is arranged at the lower end of the third valve rod; the third valve rod is in threaded fit with the rotating disc; when the opening degree of the valve port needs to be adjusted, the rotating disc can be rotated to enable the third valve rod to slide up and down relative to the second valve rod and the first valve rod, so that the distance between the baffle and the valve port is changed, and the purpose of adjustment is achieved.
Description
Technical Field
The utility model relates to a trip valve technical field, concretely relates to rack and pinion transmission formula gas emergency trip valve.
Background
The cut-off valve is one kind of executing mechanism in automatic system and consists of multiple spring pneumatic film executing mechanism or floating piston executing mechanism and regulating valve.
Patent document No. CN212804490U discloses a gear-rack transmission type emergency cut-off valve for fuel gas, wherein when the air pressure is too high, the movable iron core is attracted to make the valve rod move downward under the action of the spring to close the valve port, when the valve port needs to be opened, the gear rotates the gear, the gear drives the valve rod to move upward, the buckle and the slot will cooperate to lock the valve rod again, thereby controlling the opening of the valve port, the device can cut off the fuel gas in time when facing fault high pressure, avoiding further expansion of accidents, however, in the device, the opening and closing of the valve port are realized through the mutual clamping of the buckle and the slot, which only makes the whole device have two states of full-closed and full-open, and cannot adjust the opening degree.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rack and pinion transmission formula gas emergency cut-off valve to it is the unable problem of carrying out the aperture regulation of trip valve to solve traditional rack and pinion.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the rack and pinion transmission type gas emergency cut-off valve comprises a valve body;
the bottom of the valve body is provided with a base, and an air inlet channel, an air outlet channel and a connecting channel are arranged in the base; a valve port is arranged at the joint of the air outlet channel and the connecting channel;
a first valve rod is arranged in the valve body in a vertically sliding mode, the lower end of the first valve rod is located in the connecting channel, and the upper end of the first valve rod is located outside the valve body; the first valve rod is arranged in a hollow mode;
a second valve rod is arranged at the upper end of the first valve rod, the second valve rod and the first valve rod are arranged at intervals up and down, and a rotary disc is arranged between the first valve rod and the second valve rod; the first valve rod and the second valve rod are connected with each other through a connecting handle; the second valve rod is arranged in a hollow mode;
a third valve rod is arranged inside the first valve rod and the second valve rod in a sliding mode, the upper end of the third valve rod is located above the second valve rod, the lower end of the third valve rod is located in the connecting channel, and a baffle plate for blocking the valve port is arranged at the lower end of the third valve rod; the third valve stem is in threaded engagement with the rotary disk; a rotation stopping pin is radially arranged on the second valve rod, and a rotation stopping groove is formed in the third valve rod;
and a spring is arranged between the baffle and the connecting channel and sleeved at the lower end of the first valve rod.
Further, a rack is arranged on the first valve rod, a gear matched with the rack is arranged in the valve body, and a handle used for rotating is arranged on the gear.
Furthermore, a first clamping groove is formed in the outer wall of the first valve rod; the valve body is provided with a second clamping groove for the movable iron core to pass through, and the movable iron core is provided with an electromagnetic coil; the first clamping groove corresponds to the second clamping groove.
Further, the upper end of the connecting handle is connected with the outer wall of the second valve rod, and the lower end of the connecting handle is connected with the outer wall of the first valve rod; two connecting handles are symmetrically arranged.
The utility model has the advantages that:
in the device, the first valve rod and the second valve rod are arranged in a hollow mode, the third valve rod is arranged inside the third valve rod, the lower end of the third valve rod is provided with the baffle, and when the opening degree of the valve port needs to be adjusted in the normal use process, the rotating disc can be rotated to enable the third valve rod to slide in the vertical direction relative to the second valve rod and the first valve rod, so that the distance between the baffle and the valve port is changed, and the purpose of adjustment is achieved.
Drawings
Fig. 1 is a schematic view (sectional view) of the overall structure of the present invention.
Names corresponding to the marks in the figure:
1. the valve comprises a valve body, 10, an air inlet channel, 11, an air outlet channel, 12, a connecting channel, 13, a valve port, 2, a first valve rod, 20, a rack, 3, a second valve rod, 4, a third valve rod, 40, a baffle, 5, a rotary disk, 6, a spring, 7, a gear, 8, a connecting handle, 9 and a movable iron core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
The embodiment of the utility model provides a:
as shown in figure 1, the gear rack transmission type gas emergency cut-off valve comprises a valve body 1.
The bottom of the valve body 1 is provided with a base, and an air inlet channel 10, an air outlet channel 11 and a connecting channel 12 are arranged in the base; the air outlet channel 11 is positioned on the left side of the valve body 1, the air inlet channel 10 is positioned on the right side of the valve body 1, the connecting channel 12 is positioned above the air inlet channel 10 and the air outlet channel 11, and the connecting channel 12 is mutually connected with the air inlet channel 10 and the air outlet channel 11; a valve port 13 is arranged at the joint of the air outlet channel 11 and the connecting channel 12, and the valve port 13 is arranged upwards.
A first valve rod 2 is arranged in the valve body 1 in a vertically sliding mode, the lower end of the first valve rod 2 is located in the connecting channel 12, and the upper end of the first valve rod 2 is located outside the valve body 1; the first valve rod 2 is arranged in a hollow manner; a second valve rod 3 is arranged at the upper end of the first valve rod 2, the second valve rod 3 and the first valve rod 2 are arranged at intervals up and down, and a rotating disc 5 is arranged between the first valve rod 2 and the second valve rod 3; the first valve rod 2 and the second valve rod 3 are connected with each other through a connecting handle 8; the second valve rod 3 is arranged in a hollow mode; a third valve rod 4 is arranged inside the first valve rod 2 and the second valve rod 3 in a sliding mode, the upper end of the third valve rod 4 is located above the second valve rod 3, the lower end of the third valve rod 4 is located in the connecting channel 12, and a baffle 40 for blocking the valve port 13 is arranged at the lower end of the third valve rod 4; when the rotary disc 5 rotates, the rotary disc 5 is limited by the first valve rod 2 and the second valve rod 3, the rotary disc 5 can only rotate, the rotary disc 5 is in threaded connection with the third valve rod 4, and the third valve rod 4 can be adjusted in the vertical direction under the action of threads, so that the distance between the baffle 40 at the lower end of the third valve rod 4 and the valve port 13 is changed, and the opening degree of the valve port is adjusted. A spring 6 is arranged between the baffle plate 40 and the connecting channel 12, the spring 6 is sleeved at the lower end of the first valve rod 2, the spring 6 is arranged between the baffle plate 40 and the connecting channel 12, and the spring 6 is sleeved at the lower end of the first valve rod 2.
The first valve rod 2 is provided with a rack 20, the valve body 1 is internally provided with a gear 7 matched with the rack 20, and the gear 7 is provided with a handle for rotation.
The inner arm of the second valve rod 3 is radially provided with a rotation stopping pin, the outer wall of the third valve rod 4 is provided with a rotation stopping groove, the length direction of the rotation stopping groove is consistent with the axial direction of the third valve rod 4, and the rotation stopping pin and the rotation stopping groove are used for preventing the third valve rod 4 from rotating relative to the second valve rod 3 and the first valve rod 2.
A first clamping groove is formed in the outer wall of the first valve rod 2; a second clamping groove for the movable iron core 9 to pass through is formed in the valve body 1, and an electromagnetic coil is arranged on the movable iron core 9; the first card slot and the second card slot are corresponding to each other. The principle that the electromagnetic coil is energized by an electric signal to move the plunger 9 is the prior art, and will not be described in detail in this embodiment; the signal of the electrified electromagnetic coil is fed back through an air pressure sensor or a device for detecting faults.
The upper end of the connecting handle 8 is connected with the outer wall of the second valve rod 3, and the lower end of the connecting handle 8 is connected with the outer wall of the first valve rod 2; the connecting handles 8 are axially symmetrical, and the connecting handles 8 connect the first valve rod 2 and the second valve rod 3 together, but do not influence the rotation of the rotating disc 5 between the two. It should be noted that when the plunger 9 is out of the engagement with the first engaging groove in a failure, the first valve rod 2, the second valve rod 3, and the third valve rod 4 will move downward integrally.
A sealing gasket is arranged below the baffle 40 to ensure the sealing property when the valve port 13 is blocked; the upper end of the first valve rod 2 is provided with a sealing ring for ensuring the sealing performance of the first valve rod 2 in the movement process; the sliding fit of the third valve rod 4 to the first valve rod 2 is similar to the fit of a cylinder and piston, thereby ensuring air tightness between the third valve rod 4 and the first valve rod 2.
The working principle is as follows: when the air pressure is increased due to a fault, the electromagnetic coil is electrified, the movable iron core 9 is attracted rightwards, the movable iron core 9 is separated from the first clamping groove in a clamping mode, the first valve rod 2, the second valve rod 3 and the third valve rod 4 move downwards under the action of the spring 6, finally the valve port 13 is blocked by the baffle 40, the fuel gas is cut off, when the valve needs to be opened again, the main valve in the whole pipeline can be disconnected, then the handle is rotated, and the first valve rod 2, the second valve rod 3 and the third valve rod 4 are driven to ascend through the gear 7 until the movable iron core 9 is just clamped in the first clamping groove; if the opening degree of the valve port 13 needs to be adjusted, the rotating disc 5 can be rotated to move the third valve rod 4 up and down in the first valve rod 2 and the second valve rod 3, so as to change the distance between the baffle 40 and the valve port 13, thereby achieving the purpose of adjustment.
Claims (4)
1. Pinion-and-rack transmission formula gas quick action emergency valve, its characterized in that: comprises a valve body;
the bottom of the valve body is provided with a base, and an air inlet channel, an air outlet channel and a connecting channel are arranged in the base; a valve port is arranged at the joint of the air outlet channel and the connecting channel;
a first valve rod is arranged in the valve body in a vertically sliding mode, the lower end of the first valve rod is located in the connecting channel, and the upper end of the first valve rod is located outside the valve body; the first valve rod is arranged in a hollow mode;
a second valve rod is arranged at the upper end of the first valve rod, the second valve rod and the first valve rod are arranged at intervals up and down, and a rotating disc is arranged between the first valve rod and the second valve rod; the first valve rod and the second valve rod are connected with each other through a connecting handle; the second valve rod is arranged in a hollow mode;
a third valve rod is arranged inside the first valve rod and the second valve rod in a sliding mode, the upper end of the third valve rod is located above the second valve rod, the lower end of the third valve rod is located in the connecting channel, and a baffle plate for blocking the valve port is arranged at the lower end of the third valve rod; the third valve rod is in threaded fit with the rotary disc; a rotation stopping pin is radially arranged on the second valve rod, and a rotation stopping groove is formed in the third valve rod;
and a spring is arranged between the baffle and the connecting channel and sleeved at the lower end of the first valve rod.
2. The rack and pinion drive type gas emergency shut-off valve according to claim 1, characterized in that: the first valve rod is provided with a rack, the valve body is internally provided with a gear matched with the rack, and the gear is provided with a handle for rotation.
3. The rack and pinion drive type emergency shut-off valve for fuel gas of claim 1, wherein: a first clamping groove is formed in the outer wall of the first valve rod; the valve body is provided with a second clamping groove for the movable iron core to pass through, and the movable iron core is provided with an electromagnetic coil; the first clamping groove corresponds to the second clamping groove.
4. The rack and pinion drive type emergency shut-off valve for fuel gas of claim 1, wherein: the upper end of the connecting handle is connected with the outer wall of the second valve rod, and the lower end of the connecting handle is connected with the outer wall of the first valve rod; two connecting handles are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222523616.XU CN218326399U (en) | 2022-09-22 | 2022-09-22 | Gear rack transmission type emergency cut-off valve for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222523616.XU CN218326399U (en) | 2022-09-22 | 2022-09-22 | Gear rack transmission type emergency cut-off valve for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218326399U true CN218326399U (en) | 2023-01-17 |
Family
ID=84819552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222523616.XU Active CN218326399U (en) | 2022-09-22 | 2022-09-22 | Gear rack transmission type emergency cut-off valve for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218326399U (en) |
-
2022
- 2022-09-22 CN CN202222523616.XU patent/CN218326399U/en active Active
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