CN111043393B

CN111043393B - Valve opening and closing auxiliary device

Info

Publication number: CN111043393B
Application number: CN201911336651.7A
Authority: CN
Inventors: 沈建
Original assignee: 沈建
Current assignee: Jiangsu Jinling Zhizao Research Institute Co., Ltd; Nanjing Chenguang Group Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-11-30
Anticipated expiration: 2039-12-23
Also published as: CN111043393A

Abstract

The invention discloses a valve opening and closing auxiliary device, which comprises a block valve used for rapidly cutting off a gas source when accidents such as natural gas leakage or fire disasters occur, wherein a rotary handle used for driving the block valve to open and close is arranged in the block valve; through the setting of above-mentioned drive complementary unit, can effectively reduce the power that the manual work need consume when rotating the block valve, improve the drive efficiency to the block valve, guarantee the steady operation of block valve, improved the security, and this block valve can not change the height of rotatory handle along with the change of opening and close for general people can both operate it when needs, have improved the practicality.

Description

Valve opening and closing auxiliary device

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a valve opening and closing auxiliary device.

Background

Natural gas is combustible gas, although the composition of the natural gas can be changed greatly, the main component is methane, the fire hazard is class A, the natural gas is leaked into the air, the explosion and fire are easily caused, the most important and basic measure for fighting fire or extinguishing fire is to cut off the gas source rapidly for the condition that the natural gas catches fire, and a cut-off valve is disclosed in the prior publication with the publication number of CN204592323U, so that the unnecessary excessive extrusion and scraping phenomena of a butterfly plate and a valve seat are eliminated, the opening resistance distance is reduced, the abrasion is reduced, and the service life of the valve seat is prolonged; in addition, the gap between the valve rod and the valve body is filled with a plurality of layers of fillers, which is beneficial to enhancing the sealing effect and preventing the medium from leaking; however, when the block valve is rotated, the block valve is fixed tightly, so that great effort is required to open the block valve, and the block valve is generally high.

Disclosure of Invention

The invention provides a valve opening and closing auxiliary device which can easily and effectively operate a cut-off valve in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a valve opening and closing auxiliary device comprises a block valve used for rapidly cutting off a gas source when accidents such as natural gas leakage or fire disasters occur, wherein a rotary handle used for driving the block valve to open and close is arranged in the block valve, a threaded rod used for controlling the block valve to open and close is also arranged in the block valve, and a driving auxiliary mechanism used for reducing acting force intensity required by driving the block valve is arranged between the rotary handle and the threaded rod; through the setting of above-mentioned drive complementary unit, can effectively reduce the power that the manual work need consume when rotating the block valve, improve the drive efficiency to the block valve, guarantee the steady operation of block valve, improved the security, and this block valve can not change the height of rotatory handle along with the change of opening and close for general people can both operate it when needs, have improved the practicality.

Furthermore, the driving auxiliary mechanism comprises an error touch prevention device for preventing the cut-off valve from being opened and closed by mistake in a normal state, a speed reduction assembly for reducing the torque of the rotating handle and a transmission assembly for transmitting the power generated when the rotating handle rotates; through the setting of the device is prevented touching by mistake to above-mentioned structure for the shut-off valve can avoid touching by mistake and lead to the drive of shut-off valve under the normality, has reduced the danger of shut-off valve under the normality, has guaranteed the reliable and stable nature of shut-off valve, and the setting of speed reduction subassembly and drive assembly makes the light that rotatory handle can be more when rotatory, has improved the drive efficiency to the shut-off valve.

Furthermore, the driving auxiliary mechanism also comprises a working box for accommodating the speed reduction assembly and the transmission assembly and a plurality of support columns for fixing the working box on the block valve, and the rotary handle is arranged at the top of the working box; through the setting of above-mentioned work box, the operation that drive complementary unit can be stable avoids the separation of part, and can avoid the part to receive the influence of various weather and lead to damaging, has improved the life of part, and the setting of support column for on the fixed block valve that the work box can be stable, stability when having guaranteed the device operation.

Further, the speed reduction assembly comprises a worm for transmitting power when the rotating handle rotates and a first transmission piece for reducing torque transmitted by the worm; when the rotating handle rotates, the worm rotates, and the first transmission piece rotates at a reduced speed; through the setting of above-mentioned worm, can transmit the power that produces when rotatory handle rotates, and the cooperation setting of worm and first transmission piece can carry out effectual reduction for the effort of first transmission piece with the worm transmission for rotatory handle can be more light laborsaving when driving the shut-off valve, has improved the drive efficiency to the shut-off valve, and has reduced the operation requirement of shut-off valve, has improved the practicality.

Further, the transmission assembly comprises a second transmission piece for transmitting the power of the first transmission piece and a third transmission piece for changing the transmission direction of the second transmission piece, and the second transmission piece and the first transmission piece are coaxially arranged; the first transmission piece rotates at a reduced speed, and the second transmission piece rotates at the same speed; through the setting of above-mentioned second driving medium and third driving medium for the rotational speed that reduces can continue to carry out slight reduction through the transmission of worm and first driving medium, makes rotatory handle more laborsaving to the drive of shutoff valve, and has reduced the moment of torsion, can carry out better transmission to the effort, the effectual drive efficiency who improves rotatory handle.

Furthermore, the false touch prevention device comprises a fixed shaft for connecting the first transmission piece and the second transmission piece, and a first connecting rod and a second connecting rod for controlling the first transmission piece and the second transmission piece to move; when the cut-off valve does not need to be operated, the first connecting rod and the second connecting rod move, and the first transmission piece and the second transmission piece are disconnected from the worm; through the setting of above-mentioned fixed axle for first driving medium and second driving medium can carry out the rotation with the axle center, have strengthened the transmission effect of first driving medium to the second driving medium, have reduced the loss of power, and the setting of head rod and second connecting rod can carry out effectual support to first driving medium and second driving medium, make first driving medium and second driving medium can stably carry out the transmission, stability when having improved first driving medium and second driving medium operation.

Further, the false touch prevention device comprises a first elastic part and a second elastic part which are used for driving the first transmission part and the second transmission part to be separated from and combined with the worm; the first elastic piece and the second elastic piece are not deformed, the first transmission piece and the second transmission piece are meshed with the worm, the first elastic piece and the second elastic piece contract, and the first transmission piece and the second transmission piece are disconnected with the worm; through the setting of above-mentioned first elastic component and second elastic component for first driving medium and second driving medium can realize lateral shifting's effect through first elastic component and second elastic component, thereby can realize the deciliter effect with the worm, play and carry out the setting that prevents the mistake and touch the shut-off valve when the shut-off valve normality, strengthened the drive effect of preventing the mistake and touch the device, and simple structure has reduced the operability of preventing the mistake and touching the device.

Furthermore, a fixed block for supporting the first connecting rod and the second connecting rod to move and a driving piece for driving the first elastic piece and the second elastic piece to stretch are arranged in the working box, the first connecting rod and the second connecting rod are connected through a fixed rod, the driving piece is movably connected with the fixed rod, and the bottom of the driving piece is arranged in a flat shape; through the setting of above-mentioned fixed block, make head rod and second connecting rod can realize the keeping of horizontality through the fixed block, make head rod and second connecting rod can be in the fixed block stable removal, the stability when head rod and second connecting rod remove has been improved, and the setting of driving piece, make the start-up of preventing mistake and touch the device and close more simple effective, the operation degree of difficulty has been reduced, and effectual improvement prevent the stability when mistake touches the device and starts, avoid the driving piece during operation to take place to deflect, and lead to preventing the mistake and touch the inefficacy of device.

Furthermore, the third transmission part is movably connected with the working box through a rotating shaft which drives the threaded rod to rotate, the rotating shaft is movably connected with the threaded rod, the rotating shaft is provided with a protrusion part, the threaded rod is provided with a movable groove for the rotating shaft to go deep into, the movable groove is provided with a strip-shaped groove matched with the protrusion part, and the movable groove is internally provided with a third elastic part; through the cooperation setting in above-mentioned jut and bar groove for the rotation axis is when driving the threaded rod, and the threaded rod can not drive the rotation axis and together go up and down when going up and down, makes rotatory handle keep original height when the threaded rod goes up and down, so that people of different heights drive the block valve when needing, has improved the device's adaptability, and the setting of third elastic component, makes the threaded rod more light laborsaving when descending, has improved the removal efficiency of threaded rod.

The invention has the following advantages: this auxiliary device is opened and close to valve passes through above-mentioned drive complementary unit's setting, required effort when can effectual reduction drive shut-off valve, make the drive of shut-off valve more laborsaving light, the drive efficiency to shut-off valve has been improved, and can avoid the shut-off valve to take place the mistake under the normality and start and cause, the reliable and stable nature and the security of shut-off valve have been guaranteed, can avoid rotatory handle to take place the altitude variation when drive shut-off valve and the discomfort when leading to the people drive shut-off valve of different heights simultaneously, the effectual adaptability that improves shut-off valve.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a first perspective sectional view of fig. 1.

Fig. 3 is a perspective sectional view two of fig. 1.

Fig. 4 is an enlarged view of a structure in fig. 3.

Fig. 5 is a three-dimensional sectional view of fig. 1.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, a valve opening/closing auxiliary device comprises a shut-off valve 1 for rapidly shutting off a gas source when an accident such as natural gas leakage or fire occurs, a rotary handle 11 for driving the shut-off valve 1 to open and close is arranged in the shut-off valve 1, a threaded rod 12 for controlling the shut-off valve 1 to open and close is further arranged in the shut-off valve 1, a driving auxiliary mechanism for reducing the strength of an acting force required for driving the shut-off valve 1 is arranged between the rotary handle 11 and the threaded rod 12, and by means of the arrangement of the driving auxiliary mechanism, the force required for manually rotating the shut-off valve can be effectively reduced, the driving efficiency of the shut-off valve is improved, the stable operation of the shut-off valve is ensured, the safety is improved, and the height of the rotary handle cannot be changed along with the change of the opening/closing of the shut-off valve, so that a general person can operate the shut-off valve when needed, the practicability is improved; the stop valve is a natural gas stop valve existing in the market at present, and is the prior art, and the details are not described here, and the rotating handle and the threaded rod are parts on the prior stop valve, and are the prior art, and are not described here again.

The driving auxiliary mechanism comprises an error touch prevention device for preventing the block valve 1 from being opened and closed by mistake in a normal state, a speed reduction assembly for reducing the torque of the rotating handle 11 and a transmission assembly for transmitting the power when the rotating handle 11 rotates, and by the arrangement of the error touch prevention device, the block valve can be prevented from being touched by mistake in the normal state to drive the block valve, so that the danger of the block valve in the normal state is reduced, the stable reliability of the block valve is ensured, and the arrangement of the speed reduction assembly and the transmission assembly enables the rotating handle to be easier in rotation and improves the driving efficiency of the block valve; the driving auxiliary mechanism further comprises a working box 13 used for containing a speed reduction assembly and a transmission assembly and a plurality of supporting columns 14 used for fixing the working box 13 on the block valve 1, the rotating handle 11 is arranged at the top of the working box 13, and through the arrangement of the working box, the driving auxiliary mechanism can stably run, so that the separation of components is avoided, the components can be prevented from being damaged due to the influence of various weather, the service life of the components is prolonged, and the supporting columns are arranged, so that the working box can be stably fixed on the block valve, and the stability of the device in running is ensured.

The speed reducing assembly comprises a worm 131 for transmitting power when the rotating handle 11 rotates and a first transmission member 132 for reducing torque transmitted by the worm 131; when the rotating handle 11 rotates, the worm 131 rotates, the first transmission piece 132 rotates in a speed reduction manner, force generated when the rotating handle rotates can be transmitted through the arrangement of the worm, and the acting force transmitted to the first transmission piece by the worm can be effectively reduced through the matching arrangement of the worm and the first transmission piece, so that the rotary handle can drive the block valve more easily and more easily, the driving efficiency of the block valve is improved, the operation requirement of the block valve is reduced, and the practicability is improved; in this embodiment, the first transmission member is provided by a common gear, and the second transmission member and the third transmission member are provided by helical gears, which are all in the prior art and are not described herein again; the transmission assembly comprises a second transmission piece 133 used for transmitting the power of the first transmission piece 132 and a third transmission piece 134 used for changing the transmission direction of the second transmission piece 133, and the second transmission piece 133 and the first transmission piece 132 are coaxially arranged; the first transmission member 132 rotates at a reduced speed, the second transmission member 133 rotates at the same speed, the first transmission member rotates at a reduced speed, and the second transmission member rotates at the same speed; through the setting of above-mentioned second driving medium and third driving medium for the rotational speed that reduces can continue to carry out slight reduction through the transmission of worm and first driving medium, makes rotatory handle more laborsaving to the drive of shutoff valve, and has reduced the moment of torsion, can carry out better transmission to the effort, the effectual drive efficiency who improves rotatory handle.

The worm is connected with the first transmission piece in a meshed mode, the second transmission piece is connected with the third transmission piece in a meshed mode, when the cut-off valve is driven, the rotating handle drives the worm to rotate, the worm drives the first transmission piece to rotate in a speed reducing mode, the first transmission piece drives the second transmission piece to rotate, the second transmission piece drives the third transmission piece to achieve the rotating effect, the rotating speed of the first transmission piece can be reduced through the transmission of the worm to the first transmission piece, and the rotating handle is enabled to rotate more labor-saving.

The false touch prevention device comprises a fixed shaft 135 for connecting the first transmission piece 132 and the second transmission piece 133, a first connecting rod 136 and a second connecting rod 137 for controlling the first transmission piece 132 and the second transmission piece 133 to move; when the shut-off valve 1 does not need to be operated, the first connecting rod 136 and the second connecting rod 137 move, the first transmission piece 132 and the second transmission piece 133 are disconnected from the worm 131, the first transmission piece and the second transmission piece can rotate coaxially through the arrangement of the fixed shaft, the transmission effect of the first transmission piece on the second transmission piece is enhanced, the force loss is reduced, the first connecting rod and the second connecting rod can effectively support the first transmission piece and the second transmission piece, the first transmission piece and the second transmission piece can stably transmit, and the stability of the first transmission piece and the second transmission piece in operation is improved; the first connecting rod and the second connecting rod are respectively fixedly connected with two ends of the fixed shaft and extend out of the working box to be fixedly connected with the fixed rod, and the first transmission piece and the second transmission piece can be driven to move by the movement of the first connecting rod and the second connecting rod.

The false touch prevention device comprises a first elastic member 1361 and a second elastic member 1371 which are used for driving the first transmission piece 132 and the second transmission piece 133 to be separated from and combined with the worm 131; the first elastic member 1361 and the second elastic member 1371 are not deformed, the first transmission member 132 and the second transmission member 133 are engaged with the worm 131, the first elastic member 1361 and the second elastic member 1371 are contracted, and the first transmission member 132 and the second transmission member 133 are disconnected from the worm 131, so that the first transmission member and the second transmission member can realize the effect of transverse movement through the first elastic member and the second elastic member through the arrangement of the first elastic member and the second elastic member, thereby realizing the separation and combination effect with the worm, achieving the setting of preventing the mistaken touch of the block valve in the normal state of the block valve, enhancing the driving effect of the mistaken touch preventing device, having a simple structure, and reducing the operability of the mistaken touch preventing device; the working box 13 is internally provided with a fixing block 138 for supporting the first connecting rod 136 and the second connecting rod 137 to move and a driving element 139 for driving the first elastic element 1361 and the second elastic element 1371 to stretch, the first connecting rod 136 and the second connecting rod 137 are connected through a fixing rod 1391, the driving element 139 is movably connected with the fixing rod 1391, the bottom of the driving element 139 is arranged in a flat shape, and through the arrangement of the fixing block, the first connecting rod and the second connecting rod can be kept in a horizontal state through the fixing block, so that the first connecting rod and the second connecting rod can stably move in the fixing block, the stability of the first connecting rod and the second connecting rod when moving is improved, and the driving element is arranged, so that the start and the close of the anti-false touch device are simpler and more effective, the operation difficulty is reduced, and the stability of the anti-false touch device when starting is effectively improved, the phenomenon that the driving piece deflects when in work to cause the failure of the false touch prevention device is avoided.

In this embodiment, the first elastic member, the second elastic member and the third elastic member are all arranged by using a telescopic spring, one end of each of the first elastic member and the second elastic member is fixedly connected with a ring-shaped fixing plate respectively arranged on the first connecting rod and the second connecting rod, and the other end of each of the first elastic member and the second elastic member is fixedly connected with the fixing block; when the anti-false-touch device needs to be closed, the driving piece is turned over, so that the bottom of the driving piece is separated from the side wall of the working box, the driving piece is turned over to a natural swing state, the first elastic piece and the second elastic piece drive the first connecting rod and the second connecting rod to return to the original position, the first driving piece is naturally contacted with the worm again, the effect of re-transmission is achieved, and the anti-false-touch device is closed.

The third transmission piece 134 is movably connected with the work box 13 through a rotating shaft 1341 which drives the threaded rod 12 to rotate, the rotating shaft 1341 is movably connected with the threaded rod 12, the rotating shaft 1341 is provided with a protrusion 1342, the threaded rod 12 is provided with a movable groove 121 through which the rotating shaft 1341 penetrates, the movable groove 121 is provided with a strip-shaped groove 122 matched with the protrusion 1342, the movable groove 121 is internally provided with a third elastic piece 123, and through the matching arrangement of the protrusion and the strip-shaped groove, when the rotating shaft drives the threaded rod, the threaded rod cannot be driven to lift together when lifting, so that the rotating handle keeps the original height when lifting, so that people with different heights can drive the block valve when needed, the adaptability of the device is improved, and the third elastic piece is arranged, so that the threaded rod is easier and labor-saving when descending, the moving efficiency of the threaded rod is improved; when the rotation axis drive threaded rod was rotatory, the effect that the threaded rod goes up and down was realized through the meshing transmission, and the threaded rod passes through the cooperation setting of bar groove and bellying for the threaded rod goes up and down along the rotation axis, and the rotation axis is fixed motionless, and the flexible effect is realized along with the lift of threaded rod to the third elastic component.

Claims

1. A valve opening and closing auxiliary device comprises a block valve (1) for rapidly cutting off a gas source when natural gas leaks or fire accidents happen, wherein a rotary handle (11) for driving the block valve (1) to open and close is arranged in the block valve (1); the method is characterized in that: a threaded rod (12) used for controlling the cut-off valve (1) to be opened and closed is further arranged in the cut-off valve (1), and a driving auxiliary mechanism used for reducing acting force intensity required for driving the cut-off valve (1) is arranged between the rotary handle (11) and the threaded rod (12); the driving auxiliary mechanism comprises an error touch prevention device for preventing the cut-off valve (1) from being opened and closed by error in a normal state, a speed reduction assembly for reducing the torque of the rotating handle (11) and a transmission assembly for transmitting the power generated when the rotating handle (11) rotates; the driving auxiliary mechanism further comprises a working box (13) for accommodating the speed reduction assembly and the transmission assembly and a plurality of supporting columns (14) for fixing the working box (13) on the block valve (1), and the rotating handle (11) is arranged at the top of the working box (13); the speed reduction assembly comprises a worm (131) used for transmitting power when the rotating handle (11) rotates and a first transmission piece (132) used for reducing torque transmitted by the worm (131); when the rotating handle (11) rotates, the worm (131) rotates, and the first transmission piece (132) rotates at a reduced speed; the false touch prevention device comprises a fixed shaft (135) used for connecting the first transmission piece (132) and the second transmission piece (133), a first connecting rod (136) and a second connecting rod (137) used for controlling the first transmission piece (132) and the second transmission piece (133) to move; when the shut-off valve (1) is not required to be operated, the first connecting rod (136) and the second connecting rod (137) move, and the first transmission piece (132) and the second transmission piece (133) are disconnected from the worm (131).

2. The valve opening and closing assist device of claim 1, wherein: the transmission assembly comprises a second transmission piece (133) used for transmitting the power of the first transmission piece (132), and a third transmission piece (134) used for changing the transmission direction of the second transmission piece (133), wherein the second transmission piece (133) and the first transmission piece (132) are coaxially arranged; the first transmission piece (132) rotates at a reduced speed, and the second transmission piece (133) rotates at the same speed.

3. The valve opening and closing assist device of claim 1, wherein: the false touch prevention device comprises a first elastic member (1361) and a second elastic member (1371) which are used for driving a first transmission piece (132) and a second transmission piece (133) to be separated from and combined with the worm (131); the first elastic piece (1361) and the second elastic piece (1371) are not deformed, the first transmission piece (132) and the second transmission piece (133) are meshed with the worm (131), the first elastic piece (1361) and the second elastic piece (1371) are contracted, and the first transmission piece (132) and the second transmission piece (133) are disconnected with the worm (131).

4. The valve opening and closing assist device of claim 3, wherein: be equipped with in work box (13) and be used for supporting fixed block (138) that first connecting rod (136) and second connecting rod (137) removed and be used for driving flexible driving piece (139) of first elastic component (1361) and second elastic component (1371), first connecting rod (136) and second connecting rod (137) are connected through a dead lever (1391), driving piece (139) and dead lever 1391) swing joint, the bottom of driving piece (139) is the platykurtic setting.

5. The valve opening and closing assist device of claim 2, wherein: the third transmission piece (134) is movably connected with the working box (13) through a rotating shaft (1341) which drives the threaded rod (12) to rotate, the rotating shaft (1341) is movably connected with the threaded rod (12), a protruding part (1342) is arranged on the rotating shaft (1341), a movable groove (121) for the rotating shaft (1341) to go deep is arranged on the threaded rod (12), a strip-shaped groove (122) matched with the protruding part (1342) is arranged on the movable groove (121), and a third elastic piece (123) is arranged in the movable groove (121).