CN218377727U

CN218377727U - Remote opening and closing operation structure for air valve

Info

Publication number: CN218377727U
Application number: CN202222735980.2U
Authority: CN
Inventors: 程源璟; 宋旭; 陈志平
Original assignee: Guangdong Province Nanfang Protection Bio Technology Co ltd
Current assignee: Guangdong Province Nanfang Protection Bio Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-01-24
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to a gas transmission pipeline valve mechanical equipment technical field discloses a long-range switching operation structure for blast gate, include: the valve body comprises a blade shaft, and blades are fixed on the blade shaft; one end of the transmission system is connected with the blade shaft; the control system comprises a power part and a driven part which are connected with each other, the power part is connected with a driving device, and the driven part is connected with a transmission system. The power portion through control system provides power to the device, the driven portion is with power transmission to transmission system, can be with control system's power conveying to the blade epaxial, the epaxial fixed mounting of blade has the blade that the control blast gate opened and shut, the angle of blade changes along with the rotation of blade axle, operating personnel is when the switching of control blast gate, operate the angle that can change the blade to control system, make operating personnel realize the manual control to the blast gate outside the certain distance, can effectively solve the blast gate of high-order or unsettled installation and be not convenient for manual control's problem.

Description

Remote opening and closing operation structure for air valve

Technical Field

The utility model relates to a gas transmission pipeline valve mechanical equipment technical field especially relates to a long-range switching operation structure for blast gate.

Background

A damper is a device for adjusting the amount of local resistance of a ventilation duct. Some ventilation pipelines are installed at positions with foul smell, high temperature, high humidity, flammability, explosiveness, high altitude and the like, so that the conditions of air valves on the pipelines are severe, and the control of opening and closing is difficult. For manual blast gate, generally need to take scaffold frame, ladder or take safety rope, gas mask etc. in order to switch blast gate in the place that blast gate installation condition is abominable, have certain safe risk. For the electric air valve, the safety risk caused by the fact that an operator personally opens and closes the air valve under the severe condition is solved, but the price of the electric air valve is high, and the electric control program, the electric construction and other supporting facilities have high cost compared with a simple manual air valve in control installation, and more fire and explosion risks are possibly caused by the fact that the electric air valve is arranged in flammable and explosive places. Some manual air valves which realize remote control through mechanical structures are also available, transmission needs to be realized through pulleys, steel cables and the like, and the manual air valves are complex to install and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: the utility model provides a long-range switching operation structure for blast gate makes operating personnel realize the manual control to the blast gate outside the certain distance, can effectively solve the blast gate of high-order or unsettled installation and be not convenient for manual control's problem.

In order to achieve the above object, the present invention provides a remote opening and closing operation structure for an air valve, including:

the valve body comprises a rotatable blade shaft, and blades are fixed on the blade shaft;

one end of the transmission system is connected with the blade shaft;

the control system comprises a power part and a driven part which are connected with each other, the power part is connected with a driving device, and the driven part is connected with the transmission system.

The embodiment of the utility model provides a long-range switching operation structure for blast gate compares with prior art, and its beneficial effect lies in: the power part through the control system provides power for the device, the driven part transmits the power to the transmission system, the transmission system is connected with a blade shaft in the valve body, the power of the control system can be transmitted to the blade shaft, the blade shaft is fixedly provided with a blade for controlling the opening and closing of the air valve, the opening degree of the blade is changed along with the movement of the blade shaft, an operator operates the control system to change the angle of the blade when controlling the opening and closing of the air valve, the operator realizes the manual control of the air valve outside a certain distance, and the problem that the air valve installed in a high position or in a suspension mode is inconvenient to manually control can be effectively solved.

The utility model discloses a long-range switching operation structure for blast gate, transmission system is including connecting the first gear of driven part and the second gear of connecting power output shaft, first gear connection has the second gear with transmission power, power output shaft connects the blade axle.

The utility model discloses a long-range switching operation structure for blast gate, first gear engagement is connected with two first ratchets, two the tooth opposite direction of first ratchet, first ratchet is all suit in the ratchet epaxially, the ratchet axle for the other end cover of first ratchet is equipped with the second ratchet, the second ratchet meshing connect in on the second gear.

The utility model discloses a long-range switching operation structure for blast gate, the driven part includes the controller gear, the controller gear with first gear passes through the chain and connects, the controller gear suit is epaxial in the controller, the other end of controller axle is connected with the executor.

The utility model discloses a long-range switching operation structure for blast gate, be provided with stop gear in order to control on the executor the turned angle of controller gear.

The utility model discloses a long-range switching operation structure for blast gate, transmission system includes the linkage pull rod, the linkage pull rod with many the blade hub connection, the one end of linkage pull rod is connected with slider-crank, slider-crank is connected with the rack, the rack meshes on the toothed disc.

The utility model discloses a long-range switching operation structure for blast gate, the toothed disc is for the meshing another gear portion of rack is connected driven part, driven part includes the chain, the chain is back of the body to the one end of toothed disc is connected with the hoop.

The utility model discloses a long-range switching operation structure for blast gate, transmission system includes ball bearing, ball bearing's inside is passed through the flashboard connecting rod and is connected the blade axle, ball bearing's fixed part is connected ball bearing's outside.

The utility model discloses a long-range switching operation structure for blast gate, driven portion includes the lead screw, power portion includes the carousel, the lead screw is rotationally connected in the screw, the one end of lead screw is connected ball bearing, the lead screw dorsad ball bearing's one end is connected the carousel.

The utility model discloses a long-range switching operation structure for blast gate, the cover is equipped with the sealing washer on the outer peripheral face of blade.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of a valve body part of a remote opening and closing operation structure for an air valve according to an embodiment of the present invention;

fig. 2 is a schematic view of a transmission system and a control system of a remote opening and closing operation structure for an air valve according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a transmission system for a remote opening/closing operation structure of an air valve according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a transmission system for a remote opening and closing operation structure of an air valve according to still another embodiment of the present invention;

in the figure, 1, a blade shaft; 2. a blade; 21. a seal ring; 3. a transmission system; 31. a first gear; 32. a second gear; 33. a power take-off shaft; 34. a first ratchet wheel; 35. a ratchet shaft; 36. a second ratchet wheel; 37. a linkage pull rod; 38. a drive shaft; 39. a crank block; 310. a rack; 311. a gear plate; 312. a ball bearing; 313. a ram link; 314. a torque output shaft; 4. a control system; 42. a chain; 43. an iron ring; 44. an actuator; 45. a screw rod; 46. A turntable; 47. a screw nut; 48. a universal joint; 5. a flange.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1, the remote opening and closing operation structure for an air valve according to the preferred embodiment of the present invention includes a valve body, a transmission system 3 and a control system 4, which are connected in sequence.

As shown in fig. 1, the valve body comprises a rotatable blade shaft 1, and blades 2 are fixed on the blade shaft 1 in a welding manner; the flow area of the air valve can be adjusted by changing the angle of the blade 2, so that the flow is adjusted; the blade shaft 1 is arranged on holes formed in two sides of the valve body, the hole is positioned in the center of the valve body, and the blade shaft 1 and the valve body are matched to meet the requirement of transition fit so as to ensure that the blade shaft 1 is convenient to rotate and simultaneously enhance sealing, so that air leakage is reduced as much as possible; the length of one end of the blade shaft 1, which is far away from the transmission system, only protrudes a little from the valve body, and the protruding length is as short as possible on the premise of ensuring that the blade shaft 1 cannot fall off; it should be understood that the connection portion of the blade shaft 1 and the transmission system may be formed integrally, or may be welded or fitted with a hole, and is not limited in particular.

As shown in fig. 1, one end of the transmission system 3 is connected with the blade shaft 1, and the other end is connected with the control system 4; the control system 4 comprises a power part and a driven part which are connected with each other, the power part is connected with a driving device, and the driving device can be driven by manpower or electric power; the driven part is connected with the transmission system 3. The power part of the control system 4 provides power for the device, the driven part transmits the power to the transmission system 3, the transmission system 3 is connected with the blade shaft 1 in the valve body, and the power of the control system 4 can be transmitted to the blade shaft 1. The blades 2 for controlling the opening and closing of the air valve are fixedly mounted on the blade shaft 1, the angle of each blade 2 is changed along with the rotation of the blade shaft 1, and when the air valve is controlled to be opened and closed, an operator operates the control system 4 to change the angle of each blade 2, so that the operator can manually control the air valve at a certain distance, and the problem that the air valve installed in a high position or in a suspension mode is inconvenient to manually control can be effectively solved.

As shown in fig. 1 and fig. 2, in some embodiments of the present invention, the transmission system 3 includes a first gear 31 connected to the driven portion and a second gear 32 connected to the power output shaft 33, and the first gear 31 and the second gear 32 may be coaxially disposed or may be connected in other manners to achieve the effect of transmitting power. A power output shaft 33 is arranged in a shaft hole of the second gear 32, the power output shaft 33 is connected with the blade shaft 1, and the second gear 32 and the power output shaft 33 can be connected through keys/splines, so that the stability and the reliability are realized.

As shown in fig. 1 and 2, in some embodiments of the present invention, the first gear 31 is engaged with two first ratchets 34, the two first ratchets 34 have opposite teeth, the two first ratchets 34 are sleeved on two different ratchet shafts 35, springs are sleeved on the ratchet shafts 35, a separate second ratchet 36 is sleeved on the other end of each ratchet shaft 35 opposite to the first ratchet 34, and the two second ratchets 36 are engaged with the second gear 32. When the first gear 31 rotates in different directions, one of the first ratchets 34 can be driven to rotate, the other first ratchet 34 reciprocates (i.e. idles) along the ratchet shaft 35 under the simultaneous extrusion of the spring and the first gear 31, and the ratchet shaft 35 is provided with a key groove structure at the positions where the first ratchet 34 and the second ratchet 36 are installed. When the first ratchet wheel 34 and the second ratchet wheel 36 which are matched with the first gear 31 cannot rotate reversely, an escapement structure is formed, and when the blade 2 is stressed by airflow impact, and the power output shaft 33 bears reverse torque, no matter how the torque direction is, the escapement structure corresponding to one ratchet wheel is locked, so that the torque can be only transmitted to the valve body from one end of the control system 4 and cannot be transmitted to the control system 4 from the valve body, and the angle of the blade 2 can be prevented from being changed by the airflow impact.

The utility model discloses an in some embodiments, first gear 31 is straight-tooth gear and bevel gear cooperation, and second gear 32 is bevel gear, first gear connection control system 4, and power output shaft 33 is connected to the second gear, and the controlling means's of being convenient for volume reduces the space occupation of device.

In some embodiments of the present invention, a key/spline structure is provided between the blade shaft 1 and the power output shaft 33, the structure is fixed firmly, and the transmission is accurate.

As shown in fig. 1 and fig. 2, in some embodiments of the present invention, the driven portion includes a controller gear, the controller gear is connected to the first gear 31 through a chain 42, the controller gear is sleeved on the controller shaft, and a key slot structure is provided between the controller gear and the controller shaft, the other end of the controller shaft is connected to an actuator 44, and the actuator 44 can adopt a device such as a rotary rod for facilitating manual operation.

In some embodiments of the present invention, the actuator 44 is provided with a limiting mechanism to control the rotation angle of the controller gear, and the limiting mechanism includes a limiting post and the like, so that the controller gear and the control shaft can only rotate within a limited angle range, and the corresponding blade 2 in the range is completely opened and completely closed, thereby avoiding the air valve from being damaged due to over-rotation. A perspective small window is arranged on one side of the actuator 44 of the controller shell, characters such as 'fully open', 'fully closed' and the like are respectively printed on two sides of the small window to indicate the opening and closing directions, a pointer gear can also be arranged to be matched with the controller gear, a pointer is arranged on a shaft of the pointer gear, the moving range of the pointer is arranged in the small window, numbers representing angles of 0-90 degrees are printed, and the pointer points to indicate the current opening degree.

As shown in fig. 1 and 3, in some embodiments of the present invention, the transmission system 3 includes a linkage pull rod 37, the linkage pull rod 37 is connected to a plurality of blade shafts 1, the blade shaft 1 at the center is integrated with the power output shaft 33, and can be welded or perforated to cooperate with each other, and the shaft of the remaining blades 2 extends out of the valve body by a certain length to be ensured to cooperate with the linkage pull rod 37. The linkage pull rod 37 is installed on the transmission shaft 38 and is matched with or welded with a key, and the shaft extending out of other blades 2 except the blade 2 at the center is matched with or welded with a key. When the transmission shaft 38 rotates, the linkage pull rod 37 moves along with the transmission shaft, so as to drive the shaft of the blade 2 at the non-central position to rotate, and therefore, the blades 2 can be synchronously opened and closed. One end of a transmission shaft 38 of the linkage pull rod 37 is connected with a torque output shaft 314, and the other end of the torque output shaft 314 is connected with a crank slide block 39; the crank slider 39 is connected with a rack 310, the rack 310 is meshed with a gear disc 311 through the driving of the rack 310, the gear disc 311 is divided into a large disc and a small disc, the rack 310 is meshed with the small disc of the gear disc 311, and the gear disc 311 rotates to drive the rack 310 to translate. The large disk part of the gear wheel 311 is connected with the control system 4.

In some embodiments of the present invention, the gear wheel 311 is connected to a driven part corresponding to another gear part of the engaging rack 310, the driven part includes a chain 42, and an iron ring is connected to one end of the chain 42 opposite to the gear wheel 311. The control system 4 is composed of a chain 42 and an iron ring 43, the chain 42 is used in the part matched with the first gear 31 or the gear disc 311 of the transmission system 3, and the end of the chain 42 is penetrated by the iron chain composed of the iron ring 43. The operator operates the iron ring 43 of the control system 4 to move the chain 42, so as to drive the gear wheel 311 of the transmission system 3 to rotate, and further drive the rack 310 to slide. The rack 310 slides and moves the crank block 39, thereby rotating the torque output shaft. The air flow impact cannot change the opening degree of the blade 2 by means of the friction force between the components.

As shown in fig. 1, in some embodiments of the present invention, two flanges 5 are provided at two ends of the valve body, the two flanges 5 connect the air valve and the air pipe, and the flange 5 may be a loop flange or a flat flange.

In some embodiments of the invention, as shown in fig. 4, the blade 2 is mounted in a valve body, and the middle part of the valve body is provided with a protruding cavity for keeping the blade 2 in the valve body without falling when the blade 2 is completely opened. The outer peripheral surface of the blade 2 in the valve body is sleeved with a sealing ring 21 surrounding the blade, and when the blade is completely closed, the sealing ring 21 is abutted against the valve body for preventing leakage. The center of the cavity of the valve body protrusion is provided with a small hole for inserting and connecting a transmission system 3.

In some embodiments of the present invention, the transmission system comprises a ball bearing 312, the inside of the ball bearing 312 is connected to the blade shaft through a shutter link 313, and the fixed part of the ball bearing 312 is connected to the outside of the ball bearing 312; the driven part comprises a screw rod 45, the power part comprises a rotating disc 46, the screw rod 45 is rotatably connected in a screw nut 47, one end of the screw rod 45 is connected with a ball bearing 312, and one end of the screw rod 45, which is back to the ball bearing 312, is connected with the rotating disc 46. Specifically, a blade shaft 1 inside the valve body is welded with one end of a shutter connecting rod 313, the other end of the shutter connecting rod 313 is connected with an inner ring of a ball bearing 312, and a screw rod 45 is connected with an outer ring of the ball bearing 312; the nut 47 is fixed by an external bracket and is matched with the screw rod 45. The other end of the screw 45 is connected with a universal joint 48, and the other end of the universal joint 48 is connected with the transmission system 3.

The control system 4 comprises a rotary table 46, and when the rotary table 46 is rotated, the screw rod 45 rotates along with the rotary table under the action of a universal joint 48; due to the matching of the screw rod 45 and the screw nut 47, the screw rod 45 can simultaneously slide along the axial direction by rotating the screw rod 45, so that the gate plate connecting rod 313 is driven to slide along the axial direction, and the blade shaft 1 also slides along with the gate plate connecting rod 313; the ball bearing 312 is used to cancel the rotational movement of the screw 45 so that the shutter link 313 does not rotate therewith.

Since the angle of the blade 2 is perpendicular to the direction of the air flow in this embodiment, the air flow impact does not affect the valve opening. The only factors that may change the valve opening are the gravity on the blade 2, the transmission system 3 and the control system 4, and the friction between the blade 2 and the sealing ring is enough to prevent the above components from falling under the action of self-weight.

The utility model discloses a working process does: the device is powered by a power part of a control system 4, the power is transmitted to a transmission system 3 by a driven part, the transmission system 3 is connected with a blade shaft 1 in the valve body, the power of the control system 4 can be transmitted to the blade shaft 1, blades 2 for controlling the opening and closing of the air valve are fixedly installed on the blade shaft 1, the angle of the blades 2 is changed along with the rotation of the blade shaft 1, and when an operator controls the opening and closing of the air valve, the opening degree of the blades 2 can be changed by operating the control system 4.

To sum up, the embodiment of the utility model provides a long-range switching operation structure for blast gate, it operates the angle that can change blade 2 to control system 4, makes operating personnel realize the manual control to the blast gate outside the certain distance, can effectively solve the blast gate of high-order or unsettled installation and be not convenient for manual control's problem.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A remote opening and closing operation structure for an air valve, comprising:

the valve body comprises a blade shaft which can rotate or slide, and blades are fixed on the blade shaft;

one end of the transmission system is connected with the blade shaft;

2. The remote opening and closing operation structure for the air valve according to claim 1, wherein: the transmission system comprises a first gear connected with the driven part and a second gear connected with a power output shaft, the first gear is connected with the second gear to transmit power, and the power output shaft is connected with the blade shaft.

3. The remote opening and closing operation structure for the air valve according to claim 2, wherein: the first gear is connected with two first ratchet wheels in a meshed mode, the tooth directions of the two first ratchet wheels are opposite, the first ratchet wheels are sleeved on ratchet shafts, the other ends, opposite to the first ratchet wheels, of the ratchet shafts are sleeved with second ratchet wheels, and the second ratchet wheels are connected to the second gear in a meshed mode.

4. The remote opening and closing operation structure for the air valve according to claim 2, wherein: the driven part comprises a controller gear, the controller gear is connected with the first gear through a chain, the controller gear is sleeved on a controller shaft, and the other end of the controller shaft is connected with an actuator.

5. The remote opening and closing operation structure for the air valve according to claim 4, wherein: and the actuator is provided with a limiting mechanism to control the rotation angle of the controller gear.

6. The remote opening and closing operation structure for the air valve according to claim 1, wherein: the transmission system comprises a linkage pull rod, the linkage pull rod is connected with the blade shafts, one end of the linkage pull rod is connected with a crank block, the crank block is connected with a rack, and the rack is meshed with a gear disc.

7. The remote opening and closing operation structure for the air valve according to claim 6, wherein: the gear disc is connected with the driven part relative to another gear part meshed with the rack, the driven part comprises a chain, and one end of the chain back to the gear disc is connected with an iron ring.

8. The remote opening and closing operation structure for the blast gate as claimed in claim 1, wherein: the transmission system comprises a ball bearing, the inside of the ball bearing is connected with the blade shaft through a gate plate connecting rod, and a fixing part of the ball bearing is connected with the outside of the ball bearing.

9. The remote opening and closing operation structure for the air valve according to claim 8, wherein: the driven part comprises a screw rod, the power part comprises a rotary table, the screw rod is rotatably connected in a nut, one end of the screw rod is connected with the ball bearing, and the screw rod is back to the ball bearing, and one end of the ball bearing is connected with the rotary table.

10. The remote opening and closing operation structure for the air valve according to claim 9, wherein: and a sealing ring is sleeved on the peripheral surface of each blade.