CN111677882B

CN111677882B - Ultra-low temperature stop valve

Info

Publication number: CN111677882B
Application number: CN202010542321.XA
Authority: CN
Inventors: 严涛; 丁超; 果春焕; 史可任; 王金鹤; 郁勇; 李伟; 陈默然
Original assignee: Jiangsu Sny Valve Co ltd
Current assignee: Jiangsu Sny Valve Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-05
Anticipated expiration: 2040-06-15
Also published as: CN111677882A

Abstract

The invention discloses an ultra-low temperature stop valve, which comprises: the valve body is internally provided with a first cavity and a second cavity, and the first cavity is communicated with the second cavity through a first channel; a seal assembly disposed above the first channel; one end of the valve rod is connected with the upper end of the sealing assembly, the other end of the valve rod extends to the outside of the upper end of the valve body and is provided with a hand wheel, and scales are arranged on the valve rod; and the flow control device is arranged at the outlet end of the second cavity and is connected with the valve rod through a transmission device. The invention aims to provide an ultra-low temperature stop valve, which not only improves the cutting function of the ultra-low temperature stop valve, but also enables the ultra-low temperature stop valve to have a flow control function and facilitate the flow control by arranging scales on a valve rod and adjusting a flow control device by adjusting the height of the valve rod, so that the application range of the ultra-low temperature stop valve is wider.

Description

Ultra-low temperature stop valve

Technical Field

The invention relates to the technical field of stop valves, in particular to an ultralow-temperature stop valve.

Background

The ultra-low temperature stop valve is a valve of harsh operating mode is exclusively used in, works under low temperature environment usually, for normal atmospheric temperature valve, the design is all increased usually to the valve packing position, and the extension bar is also adopted to the valve rod, and in order to prevent cryrogenic deformation, the essential element of ultra-low temperature stop valve all processes deep cooling and handles, can guarantee like this that the valve keeps the switch nimble under the ultra-low temperature state.

The opening and closing part of the ultra-low temperature stop valve is a plug-shaped valve clack, the upper surface of the seal is a plane or a sea cone surface, and the valve clack moves linearly along the central line of the valve seat. The movement form of the valve rod, also a lifting rotating rod type, can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. Therefore, this type of shutoff stop valve is well suited for shutoff. Because the valve rod of this type of valve is opened or is closed the stroke and shorter relatively, has very reliable function of cutting off moreover, but present stop valve can only realize the function of cutting off mostly, the flow of being not convenient for adjust, the use that makes the stop valve has certain limitation.

Disclosure of Invention

The invention provides an ultralow temperature stop valve which is used for solving the problems that the existing ultralow temperature stop valve is inconvenient to adjust the flow and has limitation in use.

In order to achieve the above object, the present invention provides the following technical solution, an ultra-low temperature stop valve, comprising:

the valve body is internally provided with a first cavity and a second cavity, and the first cavity is communicated with the second cavity through a first channel;

a seal assembly disposed above the first channel;

one end of the valve rod is connected with the upper end of the sealing assembly, the other end of the valve rod extends to the outside of the upper end of the valve body and is provided with a hand wheel, and scales are arranged on the valve rod;

and the flow control device is arranged at the outlet end of the second cavity and is connected with the valve rod through a transmission device.

Preferably, the seal assembly comprises:

the upper end of the sleeve is fixedly connected with the lower end of the valve rod;

the first spring is arranged in the sleeve, one end of the first spring is fixedly connected with the inner wall of the upper end of the sleeve, and the other end of the first spring is provided with a valve clack.

Preferably, the valve flap is arranged in a conical shape, and the diameter of the cross section of the upper end of the valve flap is larger than that of the cross section of the first passage.

Preferably, the valve body is wrapped by a heat insulation jacket made of heat insulation cotton.

Preferably, the hand wheel with still set up the valve gap between the valve body and press the cap, the valve gap with press the cap to overlap in proper order and establish on the valve rod, valve gap one end with valve body upper end threaded connection, the valve gap other end with press cap threaded connection, set up the screw hole in the valve gap, the valve gap passes through the screw hole with valve rod threaded connection, set up sealing filler in pressing the cap.

Preferably, a sealing gasket is arranged between the valve cover and the valve body.

Preferably, the transmission means comprises:

the middle part of the rack is provided with a first groove, one end of the valve rod, which is close to the sealing assembly, is provided with a seventh bearing, and one end of the rack, which is far away from the belt tooth, is hinged with the outer side wall of the seventh bearing;

the first rotating shaft is arranged on the right side of the upper end of the second cavity and penetrates through the first groove, and two ends of the first rotating shaft are connected with the inner wall of the second cavity through first bearings respectively;

the second rotating shaft is arranged at the upper end of the second cavity and is positioned on the right side of the first rotating shaft, and two ends of the second rotating shaft are respectively connected with the inner wall of the second cavity through second bearings;

the first gear is arranged on the second rotating shaft and is meshed with the tooth form of the rack;

the first chain wheel is arranged on the second rotating shaft;

the third rotating shaft is arranged below the second rotating shaft, and two ends of the third rotating shaft are respectively connected with the inner wall of the second cavity through third bearings;

the second chain wheel is arranged on the third rotating shaft and is in transmission connection with the first chain wheel through a chain;

the first bevel gear is arranged on the third rotating shaft;

the fixed block is arranged on the inner wall close to the upper end of the outlet end, and a fourth bearing is arranged in the fixed block;

and the outer wall of the fourth rotating shaft is fixedly connected with the inner ring of the fourth bearing, one end of the fourth rotating shaft penetrates through the fourth bearing and is provided with a second gear, the other end of the fourth rotating shaft extends to the third rotating shaft and is provided with a second bevel gear, and the second bevel gear is meshed with the tooth form of the first bevel gear.

Preferably, the flow control device includes:

one end of the cylinder is mounted at the outlet end through a fixing device, a rotating disc is sleeved at the other end of the cylinder, the inner wall of the rotating disc is movably connected with the outer ring of the cylinder, the rotating disc can rotate around the outer ring of the cylinder, a second channel is arranged in the center of the cylinder, and a second groove is formed in the upper end, close to the outlet end, of the cylinder;

the fixed disc is sleeved on the rotating disc, the outer wall of the fixed disc is provided with a rubber pad, the rubber pad is attached to the inner wall of the second cavity, the inner wall of the fixed disc is movably connected with the outer ring of the rotating disc, and the rotating disc can rotate around the inner ring of the fixed disc;

the fan blades are arranged at one end, close to the rotating disc, of the cylinder, the fan blades are spliced with one another to enable the second channel to be closed, the fan blades are movably connected with the outer ring of the cylinder through a fifth rotating shaft, and the fan blades can rotate around the fifth rotating shaft;

one end of the first connecting rod is hinged with one end of the fan blade far away from the fifth rotating shaft, and the other end of the first connecting rod is hinged with the periphery of the rotating disc;

the first supporting rod is arranged on the left side of the rotating disc, two ends of the first supporting rod are fixedly connected with the side wall of the rotating disc respectively, a third gear is arranged at the center of the first supporting rod, and the third gear is meshed with the tooth form of the second gear.

Preferably, the fixing means comprises:

the first fixing frame is horizontally arranged at one end, close to the outlet end, of the cylinder, two ends of the first fixing frame are fixedly connected with the inner wall of the cylinder respectively, and a fifth bearing is arranged in the center of the first fixing frame;

the second fixing frame is arranged on the left side of the first fixing frame, two ends of the second fixing frame are fixedly connected with the inner wall of the cylinder respectively, and a sixth bearing is arranged in the center of the second fixing frame;

one end of the screw is fixedly connected with the inner ring of the sixth bearing, and the other end of the screw penetrates through the fifth bearing to extend to the outside of the cylinder and is provided with a hexagonal head;

the center of the sliding block is provided with a second threaded hole, and the sliding block is installed on the screw and is in threaded connection with the screw;

one end of the second support rod is hinged with the upper end of the sliding block, the other end of the second support rod penetrates through the second slot and is provided with a rubber block, and the rubber block is hinged with the second support rod;

and one end of the second connecting rod is hinged to the upper end of the sixth bearing, and the other end of the second connecting rod is hinged to the side wall of the rubber block.

Preferably, an inner wall cleaning device is arranged in the first cavity, and the inner wall cleaning device comprises:

the groove is arranged on the bottom wall of the inner side of the first cavity;

two ends of the sixth rotating shaft are respectively connected with two side walls of the groove through eighth bearings, and the sixth rotating shaft can rotate in the groove;

the two turbines are respectively and symmetrically arranged at the left end and the right end of the sixth rotating shaft;

the third bevel gear is arranged on the sixth rotating shaft and is positioned between the two turbines;

the fixing plate is arranged above the groove, two ends of the fixing plate are fixedly connected with the inner side wall of the first cavity respectively, a through hole is formed in the center of the fixing plate, a ninth bearing is arranged in the through hole, and the outer ring of the ninth bearing is fixedly connected with the inner wall of the through hole;

the seventh rotating shaft is installed in the ninth bearing, one end of the seventh rotating shaft extends to the upper part of the fixing plate and is provided with a rotating disc, the other end of the seventh rotating shaft extends to the third bevel gear and is provided with a fourth bevel gear, the fourth bevel gear is meshed with the third bevel gear, and a boss is arranged on the upper surface of the rotating disc close to the outer circumference;

the frame body is arranged above the rotating disc, the boss is positioned in the frame body, and push rods are arranged on the left side and the right side of the frame body respectively;

clean the ring, clean the ring setting and be in the push rod is kept away from framework one end, clean the ring center and set up the connecting plate, the connecting plate both ends respectively with clean ring both sides inner wall fixed connection, the connecting plate center with the push rod is kept away from framework one end fixed connection, clean the ring outer wall and set up the brush hair.

The technical scheme of the invention has the following advantages: the invention discloses an ultra-low temperature stop valve, which comprises: the valve body is internally provided with a first cavity and a second cavity, and the first cavity is communicated with the second cavity through a first channel; a seal assembly disposed above the first channel; one end of the valve rod is connected with the upper end of the sealing assembly, the other end of the valve rod extends to the outside of the upper end of the valve body and is provided with a hand wheel, and scales are arranged on the valve rod; and the flow control device is arranged at the outlet end of the second cavity and is connected with the valve rod through a transmission device. The invention aims to provide an ultra-low temperature stop valve, which not only improves the cutting function of the ultra-low temperature stop valve, but also enables the ultra-low temperature stop valve to have a flow control function and facilitate the flow control by arranging scales on a valve rod and adjusting a flow control device by adjusting the height of the valve rod, so that the application range of the ultra-low temperature stop valve is wider.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the apparatus particularly pointed out in the written description and drawings thereof.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an ultra-low temperature stop valve according to the present invention;

FIG. 2 is an enlarged view of the ultra-low temperature stop valve provided by the present invention at A;

FIG. 3 is a left side partial sectional view of an ultra-low temperature stop valve provided in the present invention;

FIG. 4 is a schematic view of the closing of a flow control device of an ultra-low temperature stop valve provided by the present invention;

FIG. 5 is a schematic view of the flow control device opening of an ultra-low temperature stop valve provided by the present invention;

FIG. 6 is an enlarged view of the ultra-low temperature stop valve B according to the present invention;

FIG. 7 is a right side view of an ultra-low temperature stop valve fixing device according to the present invention;

FIG. 8 is an enlarged view of the ultra-low temperature cut-off valve provided in the present invention at C;

FIG. 9 is a plan view of the inner wall cleaning device of the present invention

FIG. 10 is an enlarged view of the invention at D.

The following were used: 1-valve body, 2-first cavity, 3-second cavity, 4-first channel, 5-valve rod, 6-hand wheel, 7-outlet end, 8-sleeve, 9-first spring, 10-valve flap, 11-heat insulation jacket, 12-valve cover, 13-pressing cap, 14-sealing filler, 15-sealing gasket, 16-first rotating shaft, 17-first bearing, 18-rack, 19-seventh bearing, 20-second rotating shaft, 21-second bearing, 22-first gear, 23-first chain wheel, 24-third rotating shaft, 25-third bearing, 26-second chain wheel, 27-chain, 28-first bevel gear, 29-fixed block, 30-fourth bearing, 31-fourth rotating shaft, 32-second gear, 33-second bevel gear, 34-cylinder, 35-rotating disc, 36-second channel, 37-second slot, 38-fixed disc, 39-rubber pad, 40-fan blade, 41-fifth rotating shaft, 42-first connecting rod, 43-first supporting rod, 44-third gear, 45-first fixed frame, 46-fifth bearing, 47-second fixed frame, 48-sixth bearing, 49-screw rod, 50-sliding block, 51-second supporting rod, 52-rubber block, 53-second connecting rod, 54-groove, 55-sixth rotating shaft, 56-eighth bearing, 57-turbine, 58-third bevel gear, 59-fixed plate, 60-through hole, 61-ninth bearing, 62-seventh rotating shaft, 63-rotating disc, 64-fourth bevel gear, 65-boss, 66-frame, 67-push rod, 68-cleaning ring, 69-connecting plate and 70-brush hair.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

An embodiment of the present invention provides an ultra-low temperature stop valve, as shown in fig. 1 to 7, including:

the valve comprises a valve body 1, wherein a first cavity 2 and a second cavity 3 are arranged in the valve body 1, and the first cavity 2 is communicated with the second cavity 3 through a first channel 4;

a sealing assembly disposed above the first channel 4;

one end of the valve rod 5 is connected with the upper end of the sealing assembly, the other end of the valve rod 5 extends to the outer portion of the upper end of the valve body 1 and is provided with a hand wheel 6, and scales are arranged on the valve rod 5;

a flow control device arranged at the outlet end 7 of the second chamber 3, said flow control device being connected to the valve stem 5 by means of a transmission.

The working principle and the beneficial effects of the technical scheme are as follows: the valve body 1 is internally provided with a first cavity 2 and a second cavity 3, a sealing component is arranged in the second cavity 3 and used for sealing a first channel 4, so that the first cavity 2 is isolated from the second cavity 3, fluid cannot flow into the second cavity 3 from the first cavity 2, a hand wheel 6 is rotated, a valve rod 5 is rotated under the driving of the hand wheel 6 to drive the sealing component to be far away from the first channel 4, the first channel 4 is opened to enable the first cavity 2 to be communicated with the second cavity 3, the fluid can flow into the second cavity 3 from the first cavity 2 through the first channel 4, then the fluid passes through a flow control device, the flow control of the fluid in the ultra-low temperature stop valve can be realized according to the opening size of the flow control device, the opening size of the flow control device is adjusted by arranging scales on the valve rod 5 and adjusting the corresponding height of the valve rod 5, so that the flow of the, simultaneously, when the ultra-low temperature stop valve was closed, flow control device also closed, made ultra-low temperature stop valve inner space dual seal, damaged the back when seal assembly, and the flow control device who closes also can carry out the cutting off of fluidics, has not only improved the function of cutting off of ultra-low temperature stop valve, made the ultra-low temperature stop valve have had the flow control function moreover, the control flow of being convenient for ultra-low temperature stop valve application range is wider.

In one embodiment, as shown in fig. 1, the seal assembly comprises:

the upper end of the sleeve 8 is fixedly connected with the lower end of the valve rod 5;

first spring 9, first spring 9 sets up in the sleeve 8, first spring 9 one end with sleeve 8 upper end inner wall fixed connection, valve clack 10 is installed to the first spring 9 other end.

The working principle and the beneficial effects of the technical scheme are as follows: valve rod 5 lower extreme sets up sleeve 8, set up first spring 9 in the sleeve 8, valve clack 10 is installed to the 9 other ends of first spring, when valve clack 10 seals first passageway 4 totally, the fluid is cut off in the ultra-low temperature stop valve, fluid in the first cavity 2 can't flow in the second cavity 3, because the ultra-low temperature stop valve works under the ultra-low temperature environment, when valve clack 10 shrinkage, valve clack 10 also can remove to first passageway 4 direction under first spring 9's elastic force effect, make valve clack 10 and first passageway 4 laminate closely, avoid because valve clack 10 contracts, there is the clearance between valve clack 10 and the first passageway 4 and make the fluid follow first cavity 2 in flow in the second cavity 3, the leakproofness has been improved greatly.

In one embodiment, the valve flap 10 is provided in a conical shape, and the cross-sectional diameter of the upper end of the valve flap 10 is larger than the cross-sectional diameter of the first passage 4.

The working principle and the beneficial effects of the technical scheme are as follows: the valve clack 10 is coniform, and the lower extreme of valve clack 10 sets up to the tip, can play the guide effect when valve clack 10 gets into first passageway 4, can not take place the skew when making valve clack 10 move down, and valve clack 10 upper end cross section diameter is greater than first passageway 4 cross section diameter, and sealing area is bigger, has improved the sealed effect to first passageway 4.

In one embodiment, as shown in fig. 1, the valve body 1 is externally wrapped with an insulating jacket 11, and the insulating jacket 11 is made of insulating cotton.

The working principle and the beneficial effects of the technical scheme are as follows: because the ultra-low temperature stop valve works in the low temperature environment, in order to avoid the influence of ultra-low temperature to the fluid, at the outside parcel heat insulation jacket 11 of valve body 1, heat insulation jacket 11 adopts thermal-insulated cotton, can play the heat preservation effect to the fluid in the valve body 1, plays the guard action to valve body 1, has improved cold resistance.

In one embodiment, as shown in fig. 1, a valve cover 12 and a pressure cap 13 are further disposed between the hand wheel 6 and the valve body 1, the valve cover 12 and the pressure cap 13 are sequentially sleeved on the valve rod 5, one end of the valve cover 12 is in threaded connection with the upper end of the valve body 1, the other end of the valve cover 12 is in threaded connection with the pressure cap 13, a threaded hole is disposed in the valve cover 12, the valve cover 12 is in threaded connection with the valve rod 5 through the threaded hole, and a sealing filler 14 is disposed in the pressure cap 13.

The working principle and the beneficial effects of the technical scheme are as follows: the valve cover 12 is in threaded connection with the upper end of the valve body 1 and is used for sealing the upper end of the valve body 1 and enabling the valve rod 5 to penetrate through, the valve cover 12 is sleeved on the valve rod 5 during installation, then the valve cover 12 is rotated to enable a threaded hole of the valve cover 12 to be in threaded connection with the valve rod 5, then the valve cover 12 is installed on the valve body 1, a pressing cap 13 is arranged at the upper end of the valve cover 12, sealing filler 14 is arranged in the pressing cap 13, the sealing filler 14 is tightly pressed through the pressing cap 13 to achieve sealing of the upper end of the valve cover 12, the sealing filler 14 is a V-shaped sealing ring, the V-shaped sealing ring has the advantages of being good in pressure resistance and long in service life, the sealing filler 14 is a.

In one embodiment, as shown in fig. 1, a sealing gasket 15 is installed between the valve cover 12 and the valve body 1.

The working principle and the beneficial effects of the technical scheme are as follows: a sealing gasket 15 is arranged between the valve cover 12 and the valve body 1, so that the sealing performance of the valve cover 12 and the valve body 1 after installation is further improved.

In one embodiment, as shown in fig. 2 and 3, the transmission device includes:

the middle part of the rack 18 is provided with a first groove 54, one end of the valve rod 5 close to the sealing assembly is provided with a seventh bearing 19, and one end of the rack 18 far away from the belt teeth is hinged with the outer side wall of the seventh bearing 19;

the first rotating shaft 16 is arranged on the right side of the upper end of the second cavity 3, the first rotating shaft 16 penetrates through the first slot 54, and two ends of the first rotating shaft 16 are respectively connected with the inner wall of the second cavity 3 through first bearings 17;

the second rotating shaft 20 is arranged at the upper end of the second cavity 3, the second rotating shaft 20 is positioned at the right side of the first rotating shaft 16, and two ends of the second rotating shaft 20 are respectively connected with the inner wall of the second cavity 3 through second bearings 21;

a first gear 22, wherein the first gear 22 is mounted on the second rotating shaft 20, and the first gear 22 is engaged with the rack 18 in a tooth form;

a first chain wheel 23, wherein the first chain wheel 23 is mounted on the second rotating shaft 20;

the third rotating shaft 24 is arranged below the second rotating shaft 20, and two ends of the third rotating shaft 24 are respectively connected with the inner wall of the second cavity 3 through third bearings 25;

a second sprocket 26, wherein the second sprocket 26 is mounted on the third rotating shaft 24, and the second sprocket 26 is in transmission connection with the first sprocket 23 through a chain 27;

a first bevel gear 28, the first bevel gear 28 being mounted on the third shaft 24;

the fixed block 29 is arranged on the inner wall of the upper end of the outlet end 7, and a fourth bearing 30 is arranged in the fixed block 29;

the outer wall of the fourth rotating shaft 31 is fixedly connected with the inner ring of the fourth bearing 30, one end of the fourth rotating shaft 31 penetrates through the fourth bearing 30 and is provided with a second gear 32, the other end of the fourth rotating shaft 31 extends to the third rotating shaft 24 and is provided with a second bevel gear 33, and the second bevel gear 33 is meshed with the first bevel gear 28 in a tooth form.

The working principle and the beneficial effects of the technical scheme are as follows: one end of the valve rod 5 close to the sealing component is provided with a seventh bearing 19, the inner ring of the seventh bearing 19 is fixedly connected with the outer wall of the valve rod 5, the seventh bearing 19 can rotate on the valve rod 5, when the hand wheel 6 is rotated to enable the valve rod 5 to ascend, one end of the rack 18 is hinged with the outer side wall of the seventh bearing 19, the seventh bearing 19 ascends along with the valve rod 5 and drives the rack 18 to move upwards, the first slot 54 of the rack 18 moves upwards in the first rotating shaft 16 and then drives the first gear 22 to rotate, the first gear 22 is fixedly arranged on the second rotating shaft 20, the first gear 22 rotates and drives the second rotating shaft 20 to rotate, the first chain wheel 23 arranged on the second rotating shaft 20 also rotates along with the second rotating shaft 20, the first chain wheel 23 drives the second chain wheel 26, the third rotating shaft 24 and the first bevel gear 28 on the third rotating shaft 24 to rotate through the chain 27, the first bevel gear 28 is meshed with the second, the first bevel gear 28 drives the second bevel gear 33 and the fourth rotating shaft 31 to rotate, the fourth rotating shaft 31 drives the fourth bearing 30 to rotate in the fixed block 29, and the second gear 32 at the other end of the fourth rotating shaft 31 also rotates along with the fourth rotating shaft 31 to provide starting power for the flow control device, so that the opening of the flow control device is gradually enlarged until the opening reaches the maximum degree; when the valve stem 5 is lowered, the second gear 32 rotates in the opposite direction to provide closing power to the flow control device, causing the flow control device opening to become progressively smaller until the closure completely shuts off the flow.

In one embodiment, as shown in fig. 4 and 5, the flow control device includes:

one end of the cylinder 34 is mounted at the outlet end 7 through a fixing device, a rotating disc 35 is sleeved at the other end of the cylinder 34, the inner wall of the rotating disc 35 is movably connected with the outer ring of the cylinder 34, the rotating disc 35 can rotate around the outer ring of the cylinder 34, a second channel 36 is arranged at the center of the cylinder 34, and a second slot 37 is formed in the upper end, close to the outlet end 7, of the cylinder 34;

the fixed disc 38 is sleeved on the rotating disc 35, the rubber pad 39 is arranged on the outer wall of the fixed disc 38, the rubber pad 39 is attached to the inner wall of the second cavity 3, the inner wall of the fixed disc 38 is movably connected with the outer ring of the rotating disc 35, and the rotating disc 35 can rotate around the inner ring of the fixed disc 38;

the fan blades 40 are arranged at one end, close to the rotating disc 35, of the cylinder 34, the fan blades 40 are spliced with each other to seal the second channel 36, the fan blades 40 are movably connected with the outer ring of the cylinder 34 through a fifth rotating shaft 41, and the fan blades 40 can rotate around the fifth rotating shaft 41;

one end of the first connecting rod 42 is hinged to one end of the fan blade 40 away from the fifth rotating shaft 41, and the other end of the first connecting rod 42 is hinged to the periphery of the rotating disc 35;

the first supporting rod 43 is arranged on the left side of the rotating disc 35, two ends of the first supporting rod 43 are respectively fixedly connected with the side wall of the rotating disc 35, a third gear 44 is arranged at the center of the first supporting rod 43, and the third gear 44 is meshed with the tooth form of the second gear 32.

The working principle and the beneficial effects of the technical scheme are as follows: one end of the cylinder 34 is mounted at the outlet end 7 of the second chamber 3 through a fixing device, when the valve rod 5 ascends, the second gear 32 drives the third gear 44 to rotate, the third gear 44 is fixedly mounted on the first supporting rod 43, two ends of the first supporting rod 43 are respectively fixedly connected with the left sidewall of the rotating disc 35, the third gear 44 rotates to drive the first supporting rod 43 to rotate clockwise, because the rotating disc 35 is arranged between the fixed disc 38 and the cylinder 34, and the rotating disc 35 is respectively movably connected with the fixed disc 38 and the circular disc, the first supporting rod 43 drives the rotating disc 35 to rotate clockwise, the rotating disc 35 drives the first connecting rod 42, the first connecting rod 42 drives the fan blade 40 to rotate around the fifth rotating shaft 41, so that the fan blade 40 is far away from the second channel 36, the second channel 36 of the cylinder 34 is opened, the second channel 36 is opened as the valve rod 5 ascends, the second channel 36 is also larger, otherwise, when the valve rod 5 descends, the first supporting rod 43 drives the rotating, flabellum 40 removes to second passageway 36, flabellum 40 sets up to five, five flabellums 40 are close to each other until the concatenation together, can make second passageway 36 totally enclosed, according to the scale on the valve rod 5, can judge the rise of valve rod 5, thereby it opens the size to correspond the scale and judge flow control device flabellum 40 this moment, realize the accurate control of flow according to rotating valve rod 5, and simultaneously, when rotating valve rod 5 to the lower, flabellum 40 is totally closed, carry out secondary closure to valve body 1, when sealing device became invalid, flow control device also can realize cutting off the fluidic, the function of cutting off the fluidic of ultra-low temperature stop valve has been guaranteed, fixed disk 38 outer wall sets up rubber pad 39, rubber pad 39 closely laminates with 3 inner walls of second cavity, the leakproofness has been increased, avoid fluid to reveal from fixed disk 38.

In one embodiment, as shown in fig. 6 and 7, the fixing device includes:

the first fixing frame 45 is horizontally arranged at one end, close to the outlet end 7, of the cylinder 34, two ends of the first fixing frame 45 are fixedly connected with the inner wall of the cylinder 34 respectively, and a fifth bearing 46 is arranged at the center of the first fixing frame 45;

the second fixing frame 47 is arranged on the left side of the first fixing frame 45, two ends of the second fixing frame 47 are respectively fixedly connected with the inner wall of the cylinder 34, and a sixth bearing 48 is arranged in the center of the second fixing frame 47;

a screw 49, one end of the screw 49 is fixedly connected with the inner ring of the sixth bearing 48, and the other end of the screw 49 passes through the fifth bearing 46 to extend to the outside of the cylinder 34 and is provided with a hexagonal head;

the center of the sliding block 50 is provided with a threaded hole, and the sliding block 50 is installed on the screw 49 and is in threaded connection with the screw 49;

one end of the second support rod 51 is hinged to the upper end of the sliding block 50, the other end of the second support rod 51 penetrates through the second slot 37 and is provided with a rubber block 52, and the rubber block 52 is hinged to the second support rod 51;

one end of the second connecting rod 53 is hinged to the upper end of the sixth bearing 48, and the other end of the second connecting rod 53 is hinged to the side wall of the rubber block 52.

The working principle and the beneficial effects of the technical scheme are as follows: a first fixing frame 45 is arranged at one end of the cylinder 34 close to the outlet end 7, a second fixing frame 47 is arranged at the left side of the first fixing frame 45, the first fixing frame 45 and the second fixing frame 47 are both arranged in a straight shape, a fifth bearing 46 and a sixth bearing 48 are respectively arranged at the upper ends of the first fixing frame 45 and the second fixing frame 47, one end of a screw 49 is fixedly connected with an inner ring of the sixth bearing 48, the other end of the screw 49 penetrates through the fifth bearing 46 to extend to the outside of the cylinder 34, the screw 49 is rotated, a slider 50 moves along the screw 49 to drive a second supporting rod 51 and a second connecting rod 53 to rotate, when the slider 50 moves towards the sixth bearing 48, an included angle between the second supporting rod 51 and the second connecting rod 53 is reduced, the second supporting rod 51 penetrates through a second slot 37 to be provided with a rubber block 52, the rubber block 52 rises to be attached to the inner wall of the second cavity 3, so as to fix the, when the slider 50 is towards one end of the fifth bearing 46, the included angle between the second support rod 51 and the second connecting rod 53 is increased, the rubber block 52 descends to be separated from the inner wall of the second cavity 3, then the cylinder 34 is pulled to take the flow control device out of the outlet end 7, the flow control device is overhauled, the end part of the screw rod 49 is provided with a hexagonal head, a wrench is convenient to use, the screw rod 49 is rotated, and therefore the flow control device is taken out.

In one embodiment, as shown in fig. 8, 9 and 10, an inner wall sweeping device is arranged in the first cavity 2, and comprises:

a groove 54, wherein the groove 54 is arranged on the bottom wall of the inner side of the first cavity 2;

two ends of the sixth rotating shaft 55 are respectively connected with two side walls of the groove 54 through eighth bearings 56, and the sixth rotating shaft 55 can rotate in the groove 54;

the two turbines 57 are respectively and symmetrically arranged at the left end and the right end of the sixth rotating shaft 55;

a third bevel gear 58, wherein the third bevel gear 58 is disposed on the sixth rotating shaft 55, and the third bevel gear 58 is located between the two worm gears 57;

the fixing plate 59 is arranged above the groove 54, two ends of the fixing plate 59 are respectively fixedly connected with the inner side wall of the first cavity 2, a through hole 60 is arranged at the center of the fixing plate 59, a ninth bearing 61 is arranged in the through hole 60, and the outer ring of the ninth bearing 61 is fixedly connected with the inner wall of the through hole 60;

a seventh rotating shaft 62, wherein the seventh rotating shaft 62 is installed in the ninth bearing 61, one end of the seventh rotating shaft 62 extends to above the fixing plate 59 and is provided with a rotating disc 63, the other end of the seventh rotating shaft 62 extends to the third bevel gear 58 and is provided with a fourth bevel gear 64, the fourth bevel gear 64 is meshed with the third bevel gear 58, and a boss 65 is arranged on the upper surface of the rotating disc 63 near the outer circumference;

the frame body 66 is arranged above the rotating disc 63, the boss 65 is positioned in the frame body 66, and push rods 67 are respectively arranged on the left side and the right side of the frame body 66;

cleaning ring 68, cleaning ring 68 sets up push rod 67 is kept away from framework 66 one end, cleaning ring 68 center sets up connecting plate 69, connecting plate 69 both ends respectively with clean ring 68 both sides inner wall fixed connection, connecting plate 69 center with push rod 67 is kept away from framework 66 one end fixed connection, clean ring 68 outer wall and set up brush hair 70.

The working principle and the beneficial effects of the technical scheme are as follows: when the stop valve is opened, water flow starts to flow in the first cavity 2, the upper half part of the turbine 57 arranged in the groove 54 starts to rotate under the impact of the water flow, the turbine 57 rotates to drive the sixth rotating shaft 55 to rotate, the sixth rotating shaft 55 drives the third bevel gear 58 to rotate, the third bevel gear 58 rotates to drive the fourth bevel gear 64 to rotate, the fourth bevel gear 64 drives the seventh rotating shaft 62 to rotate, the seventh rotating shaft 62 penetrates through the fixed plate 59 and drives the rotating disc 63 to rotate, the rotating disc 63 rotates, simultaneously, the boss 65 arranged on the rotating disc 63 starts to do circular motion around the circle center of the rotating disc 63 and drives the frame body 66 to move, so that the push rod 67 reciprocates left and right in the first cavity 2, the push rod 67 moves and drives the cleaning ring 68 to move in the first cavity 2 through the connecting plate 69, and the bristles 70 on the cleaning ring 68 contact with the inner wall of the first cavity 2 and start to clean the inner wall, the impurity that will adhere to on 2 inner walls of first cavity is got rid of totally, avoids impurity long-term adhesion to pile up and causes the stop valve to block up, guarantees that rivers are unobstructed in the stop valve, has prolonged the life of stop valve.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An ultra-low temperature shut-off valve, comprising:

the valve comprises a valve body (1), wherein a first cavity (2) and a second cavity (3) are arranged in the valve body (1), and the first cavity (2) is communicated with the second cavity (3) through a first channel (4);

a sealing assembly disposed above the first channel (4);

one end of the valve rod (5) is connected with the upper end of the sealing assembly, the other end of the valve rod (5) extends to the outside of the upper end of the valve body (1) and is provided with a hand wheel (6), and scales are arranged on the valve rod (5);

a flow control device arranged at an outlet end (7) of the second chamber (3), the flow control device being connected to the valve stem (5) by an actuator;

set up inner wall cleaning device in first cavity (2), inner wall cleaning device includes:

a groove (54), wherein the groove (54) is arranged on the bottom wall of the inner side of the first cavity (2);

two ends of the sixth rotating shaft (55) are respectively connected with two side walls of the groove (54) through eighth bearings (56), and the sixth rotating shaft (55) can rotate in the groove (54);

the two turbines (57) are respectively and symmetrically arranged on the front side and the rear side of the sixth rotating shaft (55);

a third bevel gear (58), the third bevel gear (58) being disposed on the sixth rotating shaft (55), the third bevel gear (58) being located between the two worm gears (57);

the fixing plate (59) is arranged above the groove (54), two ends of the fixing plate (59) are fixedly connected with the inner side wall of the first cavity (2) respectively, a through hole (60) is formed in the center of the fixing plate (59), a ninth bearing (61) is arranged in the through hole (60), and the outer ring of the ninth bearing (61) is fixedly connected with the inner wall of the through hole (60);

a seventh rotating shaft (62), wherein the seventh rotating shaft (62) is installed in the ninth bearing (61), one end of the seventh rotating shaft (62) extends to the upper side of the fixing plate (59) and is provided with a rotating disc (63), the other end of the seventh rotating shaft (62) extends to the third bevel gear (58) and is provided with a fourth bevel gear (64), the fourth bevel gear (64) is meshed with the third bevel gear (58), and a boss (65) is arranged on the upper surface of the rotating disc (63) close to the outer circumference;

the frame body (66) is arranged above the rotating disc (63), the lug boss (65) is positioned in the frame body (66), and push rods (67) are respectively arranged on the left side and the right side of the frame body (66);

clean ring (68), clean ring (68) and set up push rod (67) are kept away from framework (66) one end, clean ring (68) center set up connecting plate (69), connecting plate (69) both ends respectively with clean ring (68) both sides inner wall fixed connection, connecting plate (69) center with push rod (67) is kept away from framework (66) one end fixed connection, clean ring (68) outer wall and set up brush hair (70).

2. An ultra-low temperature shut-off valve as claimed in claim 1, wherein said seal assembly includes:

the upper end of the sleeve (8) is fixedly connected with the lower end of the valve rod (5);

first spring (9), first spring (9) set up in sleeve (8), first spring (9) one end with sleeve (8) upper end inner wall fixed connection, valve clack (10) are installed to first spring (9) other end.

3. An ultra-low temperature stop valve as claimed in claim 2, wherein the valve flap (10) is provided in a conical shape, and the cross-sectional diameter of the upper end of the valve flap (10) is larger than that of the first passage (4).

4. An ultra-low temperature stop valve according to claim 1, characterized in that the valve body (1) is externally wrapped with a heat insulation jacket (11), and the heat insulation jacket (11) is made of heat insulation cotton.

5. An ultra-low temperature stop valve according to claim 1, characterized in that, still set up valve gap (12) and pressure cap (13) between hand wheel (6) and valve body (1), valve gap (12) with press cap (13) to overlap in proper order and establish on valve rod (5), valve gap (12) one end with valve body (1) upper end threaded connection, the valve gap (12) other end with press cap (13) threaded connection, set up the screw hole in valve gap (12), valve gap (12) pass through the screw hole with valve rod (5) threaded connection, set up gland packing (14) in pressure cap (13).

6. An ultra-low temperature stop valve according to claim 5, characterized in that a sealing gasket (15) is installed between the valve cover (12) and the valve body (1).

7. An ultra-low temperature shut-off valve as claimed in claim 1, wherein said transmission means includes:

the middle of the rack (18) is provided with a first groove (54), one end, close to the sealing assembly, of the valve rod (5) is provided with a seventh bearing (19), and one end, far away from the teeth, of the rack (18) is hinged to the outer side wall of the seventh bearing (19);

the first rotating shaft (16) is arranged on the left side of the upper end of the second cavity (3), the first rotating shaft (16) penetrates through the first slot (54), and two ends of the first rotating shaft (16) are connected with the inner wall of the second cavity (3) through first bearings (17) respectively;

the second rotating shaft (20) is arranged at the upper end of the second cavity (3), the second rotating shaft (20) is positioned on the right side of the first rotating shaft (16), and two ends of the second rotating shaft (20) are respectively connected with the inner wall of the second cavity (3) through second bearings (21);

the first gear (22), the said first gear (22) is installed on said second spindle (20), the said first gear (22) is engaged with the tooth form of the said rack (18);

a first sprocket (23), the first sprocket (23) being mounted on the second shaft (20);

the third rotating shaft (24) is arranged below the second rotating shaft (20), and two ends of the third rotating shaft (24) are respectively connected with the inner wall of the second cavity (3) through third bearings (25);

the second chain wheel (26), the second chain wheel (26) is installed on the third rotating shaft (24), and the second chain wheel (26) is in transmission connection with the first chain wheel (23) through a chain (27);

a first bevel gear (28), the first bevel gear (28) being mounted on the third shaft (24);

the fixed block (29), the fixed block (29) is installed on the inner wall close to the upper end of the outlet end (7), and a fourth bearing (30) is arranged in the fixed block (29);

the outer wall of the fourth rotating shaft (31) is fixedly connected with the inner ring of the fourth bearing (30), one end of the fourth rotating shaft (31) penetrates through the fourth bearing (30) and is provided with a second gear (32), the other end of the fourth rotating shaft (31) extends to the third rotating shaft (24) and is provided with a second bevel gear (33), and the second bevel gear (33) is meshed with the first bevel gear (28) in a tooth form.

8. An ultra-low temperature shut-off valve as claimed in claim 7, wherein said flow control means includes:

one end of the cylinder (34) is mounted at the outlet end (7) through a fixing device, a rotating disc (35) is sleeved at the other end of the cylinder (34), the inner wall of the rotating disc (35) is movably connected with the outer ring of the cylinder (34), the rotating disc (35) can rotate around the outer ring of the cylinder (34), a second channel (36) is arranged at the center of the cylinder (34), and a second groove (37) is formed in the cylinder (34) close to the upper end of the outlet end (7);

the fixed disc (38) is sleeved on the rotating disc (35), a rubber pad (39) is arranged on the outer wall of the fixed disc (38), the rubber pad (39) is attached to the inner wall of the second cavity (3), the inner wall of the fixed disc (38) is movably connected with the outer ring of the rotating disc (35), and the rotating disc (35) can rotate around the inner ring of the fixed disc (38);

the fan blades (40) are arranged at one end, close to the rotating disc (35), of the cylinder (34), the fan blades (40) are spliced with each other to enable the second channel (36) to be closed, the fan blades (40) are movably connected with the outer ring of the cylinder (34) through a fifth rotating shaft (41), and the fan blades (40) can rotate around the fifth rotating shaft (41);

one end of the first connecting rod (42) is hinged with one end, far away from the fifth rotating shaft (41), of the fan blade (40), and the other end of the first connecting rod (42) is hinged with the periphery of the rotating disc (35);

first bracing piece (43), first bracing piece (43) set up rolling disc (35) left side, first bracing piece (43) both ends respectively with rolling disc (35) lateral wall fixed connection, first bracing piece (43) center sets up third gear (44), third gear (44) with second gear (32) profile of tooth meshes mutually.

9. An ultra-low temperature shut-off valve as claimed in claim 8, wherein said fixing means includes:

the first fixing frame (45) is horizontally arranged at one end, close to the outlet end (7), of the cylinder (34), two ends of the first fixing frame (45) are fixedly connected with the inner wall of the cylinder (34) respectively, and a fifth bearing (46) is arranged at the center of the first fixing frame (45);

the second fixing frame (47) is arranged on the left side of the first fixing frame (45), two ends of the second fixing frame (47) are respectively fixedly connected with the inner wall of the cylinder (34), and a sixth bearing (48) is arranged at the center of the second fixing frame (47);

one end of the screw rod (49) is fixedly connected with the inner ring of the sixth bearing (48), and the other end of the screw rod (49) penetrates through the fifth bearing (46) to extend to the outside of the cylinder (34) and is provided with a hexagonal head;

the center of the sliding block (50) is provided with a second threaded hole, and the sliding block (50) is installed on the screw rod (49) and is in threaded connection with the screw rod (49);

one end of the second supporting rod (51) is hinged to the upper end of the sliding block (50), the other end of the second supporting rod (51) penetrates through the second slot (37) and is provided with a rubber block (52), and the rubber block (52) is hinged to the second supporting rod (51);

one end of the second connecting rod (53) is hinged to the upper end of the sixth bearing (48), and the other end of the second connecting rod (53) is hinged to the side wall of the rubber block (52).