Quick closing type gas fan outlet stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a quick closing type gas fan outlet stop valve which comprises a valve body and further comprises a plurality of blocking pieces, an adjusting assembly and a limiting assembly, the blocking pieces are all installed in the valve body in a sliding mode and are linearly arranged in the ventilation direction of the valve body, meanwhile, the sizes of the blocking pieces are gradually reduced, and the limiting assembly is arranged on the valve body. When the blocking pieces are attached, the valve body can be closed, ventilation openings are formed in the middles of the blocking pieces, when every two adjacent blocking pieces are attached, the blocking pieces with the small size can block the ventilation openings in the blocking pieces with the large size, the adjusting assembly is installed in the valve body, the distance between the blocking pieces is adjusted through the adjusting assembly, and the limiting assembly is connected with the adjusting assembly. And the adjusting assembly is limited through the limiting assembly, and meanwhile, after the limiting assembly relieves limiting of the adjusting assembly, the adjusting assembly can automatically reset, and all the blocking pieces are tightly attached. When the valve breaks down, the valve can be simply and quickly closed, and the valve is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, and more specifically to a quick-closing gas blower outlet shut-off valve. Background Technology

[0002] A gas blower is a device used to transport gas. It mainly uses mechanical energy to transport gas from a low-pressure area to a high-pressure area. At the outlet of a gas blower, a shut-off valve is usually installed to shut off the gas supply.

[0003] Currently, the most common shut-off valve is the butterfly valve, which mainly uses a rotatable baffle to open and close the valve. This type of valve has a simple structure. However, when driving the baffle to rotate and close the valve, the large area of ​​the baffle results in a large air pressure. At this time, a torque converter is needed to increase the torque. As a result, the user needs to manually turn the valve wrench many times to supplement the stroke in order to close the valve. In case of an emergency where the valve needs to be closed quickly, this closing process is relatively cumbersome. Overall, it is not convenient to use. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a quick-closing gas blower outlet shut-off valve to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a quick-closing gas blower outlet shut-off valve, including a valve body, several baffles, an adjusting component, and a limiting component. The several baffles are all slidably installed inside the valve body and are linearly arranged along the ventilation direction of the valve body. At the same time, the size of the baffles gradually decreases. When the several baffles are in contact, they can close the valve body. A ventilation opening is provided in the middle of the baffle. When two adjacent baffles are in close contact, the smaller baffle will block the ventilation opening on the larger baffle. The adjusting component is installed inside the valve body and adjusts the distance between the baffles. The limiting component is connected to the adjusting component and limits the adjusting component. After the limiting component releases the limiting component, the adjusting component will automatically reset and make all the baffles fit tightly together.

[0006] Furthermore, the adjusting assembly includes an adjusting screw and a threaded seat. The adjusting screw is rotatably mounted in the middle of the valve body, and the threaded seat is fixedly mounted in the middle of the valve body. The adjusting screw thread passes through the middle of the threaded seat, and the threaded connection between the adjusting screw and the threaded seat does not have self-locking properties.

[0007] Furthermore, the baffles are disc-shaped, and all baffles are coaxial with the valve body. The largest baffle is fixedly connected to the inner wall of the valve body, the smallest baffle is slidably mounted on the adjusting screw through the vent, and the remaining baffles of intermediate size are all equipped with brackets on their sides, and the brackets are slidably mounted on the adjusting screw.

[0008] Furthermore, several baffles are arranged in order of size, with the smaller baffles located closer to the air inlet of the valve body.

[0009] Furthermore, an opening retaining ring and a closing retaining ring are fixedly installed on the surface of the adjusting screw. There are several opening retaining rings, which are respectively set on the side of each bracket. When the adjusting screw moves, the opening retaining rings can drive the baffles to slide in sequence to expose the vents. The closing retaining ring is installed between the baffles and the air inlet of the valve body.

[0010] Furthermore, the adjustment assembly also includes a handwheel, a gearbox, and a drive shaft. The gearbox is fixedly installed inside the valve body, the handwheel is rotatably mounted on the surface of the valve body, and the shaft of the handwheel is coaxially connected to the input shaft of the gearbox. The drive shaft is rotatably mounted on the side of the gearbox and is coaxially connected to the output shaft of the gearbox. Meanwhile, the adjustment screw is slidably sleeved on the surface of the drive shaft and can rotate synchronously with the drive shaft.

[0011] Furthermore, the limiting assembly includes a ratchet, a pawl, a protective box, and a control pin. The ratchet is fixedly mounted on the handwheel's shaft, and the pawl is rotatably mounted on the valve body. A torsion spring is installed on the pawl's shaft, and the pawl engages with the ratchet under the action of the torsion spring. When the ratchet and pawl are engaged, the handwheel can only drive the adjusting screw to move towards the air inlet of the valve body. The protective box is fixedly mounted on the valve body and covers the surfaces of the ratchet and pawl. The control pin slides through the side of the protective box, and the end of the control pin contacts the surface of the pawl. When the control pin is pressed into the protective box, it can drive the pawl to rotate and separate from the ratchet.

[0012] Furthermore, the limiting assembly also includes a compression spring, which is installed between the closing retaining ring and the threaded seat, and is sleeved on the adjusting screw.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. In the entire process of use, the limiting component only needs to release the limiting component from the adjusting component, and the adjusting component will automatically drive the baffles to fit together to close the entire valve. The entire closing process does not require time-consuming and laborious turning of the valve body handwheel. Relatively speaking, the operation is simpler and faster, and the use is more convenient.

[0015] 2. In the process of using this utility model, since the small baffles are close to the air inlet of the valve body, when the adjustment component is damaged, all the baffles will automatically close to shut the valve under the air pressure of the gas blower, thereby achieving automatic shut-off in case of failure, which is relatively safer to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the protective box of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] The attached diagram is labeled as follows: 1. Valve body; 2. Baffle plate; 3. Vent; 4. Adjusting screw; 5. Threaded seat; 6. Bracket; 7. Opening retaining ring; 8. Closing retaining ring; 9. Handwheel; 10. Gearbox; 11. Drive shaft; 12. Ratchet; 13. Pawl; 14. Protective box; 15. Control pin; 16. Compression spring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The quick-closing gas blower outlet shut-off valve involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figure 1-4 This utility model provides a quick-closing gas blower outlet shut-off valve, including a valve body 1, several baffles 2, an adjusting component, and a limiting component. The several baffles 2 are all slidably installed inside the valve body 1 and are linearly arranged along the ventilation direction of the valve body 1. At the same time, the size of the baffles 2 gradually decreases. When the several baffles 2 are in contact, they can close the valve body 1. A ventilation opening 3 is provided in the middle of the baffle 2. When two adjacent baffles 2 are in close contact, the smaller baffle 2 will block the ventilation opening 3 on the larger baffle 2. The adjusting component is installed inside the valve body 1 and adjusts the distance between the baffles 2. The limiting component is connected to the adjusting component and limits the adjusting component. When the limiting component releases the limiting component, the adjusting component will automatically reset and make all the baffles 2 fit tightly together.

[0023] The adjustment assembly includes an adjustment screw 4 and a threaded seat 5. The adjustment screw 4 is rotatably mounted in the middle of the valve body 1, and the threaded seat 5 is fixedly mounted in the middle of the valve body 1. The adjustment screw 4 is threaded through the middle of the threaded seat 5, and the threaded connection between the adjustment screw 4 and the threaded seat 5 does not have self-locking properties.

[0024] The baffle 2 is disc-shaped, and all baffles 2 are coaxial with the valve body 1. The largest baffle 2 is fixedly connected to the inner wall of the valve body 1. The smallest baffle 2 is slidably mounted on the adjusting screw 4 through the vent 3. The remaining baffles 2 of medium size are all equipped with brackets 6 on their sides, and the brackets 6 are slidably mounted on the adjusting screw 4.

[0025] An opening retaining ring 7 and a closing retaining ring 8 are fixedly installed on the surface of the adjusting screw 4. There are several opening retaining rings 7, which are respectively set on the side of each bracket 6. When the adjusting screw 4 moves, the opening retaining ring 7 can drive the baffle 2 to slide in sequence to expose the vent 3. The closing retaining ring 8 is installed between the baffle 2 and the air inlet of the valve body 1.

[0026] Thus, simply by adjusting the screw 4, it can be driven to move towards the air inlet of the valve body 1. During this process, the screw 4 will drive the baffle 2 to move sequentially by opening the baffle ring 7, thereby exposing the ventilation opening 3 in the middle of the baffle 2. In this way, the gas delivered by the gas blower can pass through the gap between the ventilation opening 3 and the baffle 2 to pass through the valve body 1.

[0027] Several baffles 2 are arranged in order of size, with the smaller baffles 2 being closer to the air inlet of the valve body 1. Since the threaded connection between the adjusting screw 4 and the threaded seat 5 is not self-locking, when the entire adjusting assembly is damaged, all the baffles 2 will automatically close the valve under the air pressure of the gas blower, thus achieving automatic closure in case of failure. Relatively speaking, it is safer to use.

[0028] The adjustment assembly also includes a handwheel 9, a gearbox 10, and a drive shaft 11. The gearbox 10 is fixedly installed inside the valve body 1. The handwheel 9 is rotatably installed on the surface of the valve body 1, and the shaft of the handwheel 9 is coaxially connected to the input shaft of the gearbox 10. The drive shaft 11 is rotatably installed on the side of the gearbox 10, and the drive shaft 11 is coaxially connected to the output shaft of the gearbox 10. At the same time, the adjustment screw 4 is slidably sleeved on the surface of the drive shaft 11 and can rotate synchronously with the drive shaft 11.

[0029] Thus, simply turning the handwheel 9 will cause the transmission shaft 11 to rotate via the gearbox 10, which in turn will cause the adjusting screw 4 to rotate.

[0030] The limiting assembly includes a ratchet 12, a pawl 13, a protective box 14, and a control pin 15. The ratchet 12 is fixedly mounted on the shaft of the handwheel 9. The pawl 13 is rotatably mounted on the valve body 1. A torsion spring is mounted on the shaft of the pawl 13, and the pawl 13 engages with the ratchet 12 under the action of the torsion spring. After the ratchet 12 and pawl 13 are engaged, the handwheel 9 can only drive the adjusting screw 4 to move towards the air inlet of the valve body 1. The protective box 14 is fixedly mounted on the valve body 1 and covers the surfaces of the ratchet 12 and the pawl 13. The control pin 15 slides through the side of the protective box 14, and the end of the control pin 15 contacts the surface of the pawl 13. When the control pin 15 is pressed into the protective box 14, it can drive the pawl 13 to rotate and separate from the ratchet 12.

[0031] Thus, when an emergency occurs and the entire valve needs to be closed, simply press the control pin 15. The control pin 15 will push the pawl 13 to rotate and separate from the ratchet 12, thereby releasing the limit component from the regulating component.

[0032] The limiting assembly also includes a compression spring 16, which is installed between the closing retaining ring 8 and the threaded seat 5, and is sleeved on the adjusting screw 4.

[0033] Thus, under the restoring force of the compression spring 16, the adjusting screw 4 will be driven away from the air inlet of the valve body 1, thereby driving the baffle 2 to fit faster.

[0034] Therefore, the complete usage process is as follows: First, simply install valve body 1 at the outlet of the gas blower, and connect the inlet of valve body 1 to the outlet of the gas blower. Then, simply turn handwheel 9. The rotation of handwheel 9 will drive the transmission shaft 11 to rotate through gearbox 10. The transmission shaft 11 will drive the adjusting screw 4 to rotate, thereby driving the adjusting screw 4 to move towards the inlet of valve body 1. During this process, the adjusting screw 4 will drive the baffle 2 to move sequentially through the opening baffle ring 7, thereby exposing the ventilation opening 3 in the middle of the baffle 2. In this way, the gas delivered by the gas blower can pass through the gap between the ventilation opening 3 and the baffle 2 to pass through valve body 1.

[0035] When the adjusting screw 4 moves, it also compresses the compression spring 16 by closing the retaining ring 8. Thus, in case of an emergency requiring the entire valve to be closed, simply press the control pin 15. The control pin 15 will push the pawl 13 to rotate and separate from the ratchet 12. At this time, since the threaded connection between the adjusting screw 4 and the threaded seat 5 is not self-locking, the restoring force of the compression spring 16 will drive the adjusting screw 4 away from the air inlet of the valve body 1, thereby causing the baffle 2 to gradually close. In addition, during this process, the air pressure from the gas blower will also push the baffle 2 to gradually close until the entire valve is completely closed.

[0036] In summary, during the entire process of use, simply release the limit component from the adjustment component, and the adjustment component will automatically drive the baffles 2 to close the entire valve. The entire process does not require the time-consuming and laborious task of turning the handwheel 9 of the valve body 1. Relatively speaking, the operation is simpler and the use is more convenient.

[0037] Meanwhile, during use, since the small baffles 2 are all close to the air inlet of the valve body 1, when the regulating component is damaged, all the baffles 2 will automatically close to shut the valve under the air pressure of the gas blower, thus achieving automatic shut-off in case of failure, which is relatively safer to use.

[0038] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-closing gas blower outlet shut-off valve, comprising a valve body (1), characterized in that: It also includes several baffles (2), an adjustment component and a limiting component. The several baffles (2) are all slidably installed inside the valve body (1) and are arranged linearly along the ventilation direction of the valve body (1). At the same time, the size of the several baffles (2) gradually decreases. When the several baffles (2) are in contact, the valve body (1) can be closed. A ventilation port (3) is provided in the middle of the baffle (2). When two adjacent baffles (2) are in close contact, the smaller baffle (2) will block the ventilation port (3) on the larger baffle (2). The adjustment component is installed inside the valve body (1) and the distance between the baffles (2) is adjusted by the adjustment component. The limiting component is connected to the adjustment component and limits the adjustment component by the limiting component. At the same time, after the limiting component releases the limiting component, the adjustment component will automatically reset and make all the baffles (2) fit tightly together.

2. The quick-closing gas blower outlet shut-off valve according to claim 1, characterized in that: The adjustment assembly includes an adjustment screw (4) and a threaded seat (5). The adjustment screw (4) is rotatably installed in the middle of the valve body (1), and the threaded seat (5) is fixedly installed in the middle of the valve body (1). The adjustment screw (4) is threaded through the middle of the threaded seat (5), and the threaded connection between the adjustment screw (4) and the threaded seat (5) does not have self-locking properties.

3. The quick-closing gas blower outlet shut-off valve according to claim 2, characterized in that: The baffle (2) is disc-shaped, and all baffles (2) are coaxial with the valve body (1). The baffle (2) with the largest size is fixedly connected to the inner wall of the valve body (1). The baffle (2) with the smallest size is slidably mounted on the adjusting screw (4) through the vent (3). The baffles (2) with the remaining intermediate sizes are all equipped with brackets (6) on their sides, and the brackets (6) are slidably mounted on the adjusting screw (4).

4. A quick-closing gas blower outlet shut-off valve according to any one of claims 1-3, characterized in that: The baffles (2) are arranged in order of size, with the smaller baffles (2) being closer to the air inlet of the valve body (1).

5. The quick-closing gas blower outlet shut-off valve according to claim 3, characterized in that: The surface of the adjusting screw (4) is fixedly equipped with an opening retaining ring (7) and a closing retaining ring (8). There are several opening retaining rings (7), which are respectively set on the side of each bracket (6). When the adjusting screw (4) moves, the opening retaining ring (7) can drive the baffle (2) to slide in sequence to expose the vent (3). The closing retaining ring (8) is installed between the baffle (2) and the air inlet of the valve body (1).

6. The quick-closing gas blower outlet shut-off valve according to claim 5, characterized in that: The adjustment assembly also includes a handwheel (9), a gearbox (10), and a drive shaft (11). The gearbox (10) is fixedly installed inside the valve body (1). The handwheel (9) is rotatably installed on the surface of the valve body (1), and the shaft of the handwheel (9) is coaxially connected to the input shaft of the gearbox (10). The drive shaft (11) is rotatably installed on the side of the gearbox (10), and the drive shaft (11) is coaxially connected to the output shaft of the gearbox (10). At the same time, the adjusting screw (4) is slidably sleeved on the surface of the drive shaft (11) and can rotate synchronously with the drive shaft (11).

7. The quick-closing gas blower outlet shut-off valve according to claim 6, characterized in that: The limiting assembly includes a ratchet (12), a pawl (13), a protective box (14), and a control pin (15). The ratchet (12) is fixedly mounted on the shaft of the handwheel (9), and the pawl (13) is rotatably mounted on the valve body (1). A torsion spring is mounted on the shaft of the pawl (13), and the pawl (13) engages with the ratchet (12) under the action of the torsion spring. After the ratchet (12) and the pawl (13) are engaged, the handwheel (9) can only drive the adjusting screw. (4) Move towards the air inlet of valve body (1). The protective box (14) is fixedly installed on valve body (1). The protective box (14) covers the surface of ratchet (12) and pawl (13). The control pin (15) slides through the side of the protective box (14). The end of the control pin (15) contacts the surface of the pawl (13). When the control pin (15) is pressed into the protective box (14), it can drive the pawl (13) to rotate and separate from the ratchet (12).

8. The quick-closing gas blower outlet shut-off valve according to claim 7, characterized in that: The limiting assembly also includes a compression spring (16), which is installed between the closing retaining ring (8) and the threaded seat (5) and is sleeved on the adjusting screw (4).

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