CN210890235U - Gas valve - Google Patents

Abstract

The utility model discloses a gas valve, including valve body and valve rod, inside inlet port, venthole and the distribution chamber of being provided with of valve body, inlet port and venthole intersect with the distribution chamber respectively and form air inlet and gas outlet, the distribution intracavity is equipped with the gleitbretter that is used for closing cap gas outlet or air inlet and has the distribution hole, the one end of valve rod stretches into the distribution chamber and is connected with the gleitbretter, when adjusting the gas flow, the valve rod promotes the gleitbretter at distribution intracavity rectilinear movement to change the overlapping area between distribution hole and air inlet or the gas outlet. The driving mechanism drives the sliding sheet to linearly move, and the overlapping area of the air distribution hole on the sliding sheet and the air inlet or the air outlet of the air distribution cavity is changed, so that the air inflow of the fuel gas is adjusted.

Description

Gas valve

Technical Field

The utility model relates to a valve especially relates to a gas valve.

Background

The gas valve is a safety matching device for gas pipeline engineering. The gas valve is used for cutting off, connecting and regulating gas in a pipeline, and has good control characteristics and closing sealing performance. It is suitable for various gas medium pipelines such as city gas, liquefied petroleum, gas, natural gas and oxygen.

Most of the existing gas valves used in household appliances such as gas cookers are plug valves. For example, chinese utility model patent that the grant bulletin number is CN106051200B discloses a gas plug valve, including the case that has the gas distribution chamber, gas distribution chamber axial one end is inserted and is equipped with the valve rod that drives the case rotation, the valve rod has relative case axial motion's the state of lighting a fire that pushes down, and the gas distribution chamber axial other end is the inlet port, and the case lateral wall is equipped with inner ring air supply hole and the outer loop air supply hole with gas distribution chamber intercommunication in proper order along the axial, the inner wall of gas distribution chamber is equipped with the annular platform that is in between inner ring air supply hole and the outer loop air supply hole, be equipped with on the valve rod and pushing down the seal ring that the state of lighting a fire and annular platform offset, one of keeping away from the inlet port in inner ring air supply hole and the outer loop air supply hole is.

The Chinese patent with the publication number of CN 205013804U discloses a linear gas outlet type electric control gas valve, which comprises a valve body with a valve cavity arranged therein, a valve core positioned in the valve cavity, a gas inlet communicated with the valve cavity and at least one gas outlet; the valve body is provided with a stepping motor driving the valve core to do linear motion, the lower part of the valve cavity is provided with an airflow control channel communicated with the air outlet, the valve core is provided with an insertion end for switching on and off the airflow control channel, and the insertion end is provided with a conical surface matched with an end opening of the airflow control channel. The invention drives the conical surface of the valve core to generate a distance with the end opening of the air flow control channel by feeding through the linear stepping motor, controls the flow change of the air outlets of the inner ring and the outer ring, and controls the fire outlet state of the inner ring and the outer ring by opening and closing the self-priming valve.

The patent of the invention in China with the publication number of CN 208417617U discloses a gas valve and a gas stove capable of linearly adjusting firepower, the gas valve comprises a valve core, a valve shell assembly, an adjusting sheet and a fixing sheet, wherein the valve core is provided with a gas inlet channel and a valve core gas outlet channel communicated with the gas inlet channel, the valve core gas outlet channel is arranged corresponding to a valve body gas outlet channel of the valve shell assembly, the valve core is rotatably arranged in a valve core mounting cavity of the valve shell assembly, the fixing sheet is arranged at the gas inlet end of the valve core, and the adjusting sheet is arranged between the fixing sheet and the valve core; the adjusting sheet is provided with a first air inlet, the fixing sheet is provided with a second air inlet, and the overlapping area of the first air inlet and the second air inlet is linearly adjusted by rotating the adjusting sheet.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas valve adjusts the overlap area of gas distribution hole and air inlet or gas outlet through linear motion to retrench the gas valve structure, reduce the volume of gas valve.

The gas valve comprises a valve body and a valve rod, wherein an air inlet hole, an air outlet hole and an air distribution cavity are arranged inside the valve body, the air inlet hole and the air outlet hole are respectively intersected with the air distribution cavity to form an air inlet and an air outlet, a slip sheet used for sealing a gas outlet or the air inlet and provided with the air distribution hole is assembled in the air distribution cavity, one end of the valve rod extends into the air distribution cavity and is connected with the slip sheet, and when the gas flow is adjusted, the valve rod pushes the slip sheet to move linearly in the air distribution cavity, so that the overlapping area between the air distribution hole and the.

The valve body is a casting and is internally provided with a gas channel and a gas distribution cavity, and the gas channel comprises a gas inlet channel and a gas outlet channel; the valve rod is an operating mechanism for pushing the sliding sheet to move linearly, and can be manually operated or driven by a power mechanism; the gas distribution cavity is a hollow cavity in the valve body, the gas inlet or the gas outlet is intersected with the gas distribution cavity, the sliding sheet slides linearly in the gas distribution cavity, and the overlapping area of the gas distribution hole on the sliding sheet and the gas inlet or the gas outlet is changed, so that the gas flow is adjusted.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Preferably, the surface of the valve body is provided with a groove, and the sealing groove forms a cover plate of the air distribution cavity. The air distribution cavity is arranged on one side of the valve body in a groove shape, and the sealing cover and the valve body can be fastened and sealed through bolts.

Further, the gas outlet is located the bottom surface of recess, gleitbretter and the bottom surface sliding fit of recess are with the closing cap the gas outlet, the periphery of gas outlet is provided with the first sealing washer with gleitbretter complex. Gleitbretter bottom surface and recess sliding fit, first sealing washer is used for preventing that the gas from getting into in the gas outlet from gleitbretter bottom surface, does not pass through the distribution hole promptly.

The groove bottom here means the side opposite to the groove opening face, i.e. the side opposite to the cover plate. In this preferred mode the vanes cooperate with the outlet port and the vanes may also cooperate with the inlet port in the same or similar manner.

In order to further enhance the stability of the sliding sheet in operation, it is further preferable that a pressing plate attached to the sliding sheet and a first spring abutting against the pressing plate are disposed between the cover plate and the sliding sheet, protruding lugs are disposed on two opposite side edges of the pressing plate, and a longitudinal sliding groove matched with the protruding lugs is disposed on a side wall of the groove.

Furthermore, the pressure plate is provided with a vent hole opposite to the air outlet. The gas enters the gas distribution hole through the vent hole and then enters the gas outlet.

The top surface of the slip sheet is in sliding fit with the pressure plate and is tightly attached to the pressure plate, and the lug of the pressure plate is in sliding fit with the longitudinal groove in the side wall of the groove so as to limit the pressure plate in the advancing direction of the slip sheet.

Furthermore, a protruding ring is arranged on the periphery of the vent hole, the first spring is sleeved on the protruding ring, and two ends of the first spring are respectively abutted against the pressing plate and the cover plate.

The top surface of the slip sheet is in sliding fit with the pressure plate and is tightly attached to the pressure plate, and the top surface of the slip sheet is the surface opposite to the bottom surface of the slip sheet. The gas entering the gas distribution cavity sequentially enters the gas outlet through the gas distribution hole and the gas distribution hole, the side wall of the gas distribution cavity is provided with symmetrical limiting grooves, the two sides of the pressure plate are provided with lugs matched with the limiting grooves, and the lugs are matched with the limiting grooves to limit the pressure plate to move along the advancing direction of the sliding sheet. After the cover plate is assembled, the first spring is respectively abutted against the pressing plate and the cover plate, so that the pressing plate and the sliding piece can be tightly attached to each other while the pressing plate and the sliding piece can slide relatively, and gas enters the gas distribution hole through the vent hole and then enters the gas outlet.

The utility model discloses the be connected of valve rod and gleitbretter mean can realize through the driven all connected modes of valve rod, for example can be direct fixed connection, direct butt, also can be through middle subassembly indirect connection etc..

Preferably, one end of the valve rod extends into the air distribution cavity to abut against the sliding piece, and a return spring which is arranged opposite to the valve rod and abuts against the sliding piece is arranged inside the air distribution cavity.

The valve rod moves linearly, so that the sliding sheet is driven to slide along the bottom surface of the air distribution cavity, the overlapping area of the air distribution hole and the air outlet is adjusted, and the reset spring plays a role in buffering and rebounding when the sliding sheet operates.

Further preferably, the end part of the valve rod, which extends into the air distribution chamber, is provided with a limiting hole, and two ends of the sliding sheet are provided with positioning protrusions which are respectively matched with the limiting hole and the return spring.

Further preferably, the valve rod is driven by a power mechanism: the linear motor comprises a driving valve rod, and the other end of the valve rod is abutted to an output shaft of the linear motor.

Further, the inside step hole that supplies the valve rod to pass that has of valve body, the step department in step hole is provided with the second sealing washer with the sealed complex of valve rod and acts on the second spring of second sealing washer through the clamping ring, second spring both ends butt linear electric motor's shell and clamping ring respectively.

Set up the mounting hole with the air distribution chamber intercommunication in the valve body, linear electric motor installs through this mounting hole, the external opening part of mounting hole is sealed, internal opening links up with the air distribution chamber, linking department forms the step hole, the valve rod is with the output shaft of motor, the valve rod can extend to the air distribution intracavity along the interior sharp operation of mounting hole, the second spring sets up in the mounting hole, and the butt sets up the second sealing washer in step department in the mounting hole, but the second sealing washer guarantees that the valve rod can freely slide and seal up between the valve rod, for the function of further reinforcing second sealing washer, the second sealing washer adopts the cross-section to be circular shape sealing ring, the face of contacting with the valve rod is the cambered surface, the buffering surplus is bigger, for the installation of making things convenient for the second spring, set up the cross-section again and be square clamping ring, clamping ring one side is circular shape sealing washer butt with. The two ends of the second spring are respectively abutted against the second sealing ring and the motor body.

In order to further prevent the return spring from popping out when being pressed, it is further preferable that a boss which cooperates with the return spring to limit the popping-out of the return spring when being pressed is arranged on the inner side surface of the cover. When the cover plate is assembled, the boss is contacted with the return spring to limit the return spring to pop out.

Preferably, the inlet and outlet apertures lie substantially in the same plane.

Preferably, the air distribution hole comprises a circular hole, a triangular hole and a strip-shaped hole which are sequentially connected, and the aperture is gradually reduced from a circular hole end to a strip-shaped hole end. During gas distribution, the strip-shaped hole end is firstly superposed with the gas outlet, and when the gas distribution is switched off, the strip-shaped hole end finally leaves the gas outlet.

Preferably, the air outlet holes comprise an inner ring air outlet hole and an outer ring air outlet hole, and the valve body is provided with a first electromagnetic valve for controlling the on-off of the air inlet hole and a second electromagnetic valve for controlling the on-off of the outer ring air outlet hole.

The air inlet of the whole gas valve is controlled by the first electromagnetic valve, and the gas of the outer ring is controlled by the second electromagnetic valve. The first electromagnetic valve and the second electromagnetic valve are matched with the corresponding air holes in a conventional technical means.

Preferably, a valve rod stroke cavity for accommodating the valve rod and a spring stroke cavity for accommodating the return spring are arranged on the bottom surface of the air distribution cavity; the air inlet is positioned on the side wall of the valve rod stroke cavity.

The valve rod and the reset spring are convenient to install due to the arrangement of the valve rod stroke cavity and the spring stroke cavity. The gas is sent into from the inlet port, and the air inlet is advanced to be gone into valve rod stroke chamber, then gets into the gas outlet through the gas distribution hole, and the first sealing washer in the gas outlet outside can prevent that the gas from directly getting into the gas outlet through the gas distribution hole.

The utility model discloses a gas valve simple structure, small, simple to operate.

Drawings

FIG. 1 is a front view of the overall structure of the gas valve of the present invention (with the rear cover and the sliding piece removed);

FIG. 2 is a rear view of the structure shown in FIG. 1 (with the arrows indicating the direction of gas flow);

FIG. 3 is a front view of the overall structure of the gas valve of the present invention (with the rear cover removed);

fig. 4 is a sectional view taken along line H-H in fig. 3.

FIG. 5 is a left side view of the structure shown in FIG. 1;

FIG. 6 is a right side view of the structure shown in FIG. 1;

FIG. 7 is a bottom view of the structure shown in FIG. 1;

FIG. 8 is a top view of the structure shown in FIG. 1;

FIG. 9 is a cross-sectional view taken along line A-A of the structure shown in FIG. 1;

FIG. 10 is a cross-sectional view taken along line B-B of the structure shown in FIG. 1;

FIG. 11 is a cross-sectional view taken along line C-C of the structure shown in FIG. 1;

FIG. 12 is a cross-sectional view taken along line D-D of the structure shown in FIG. 8;

FIG. 13 is a cross-sectional view taken along line E-E of the structure shown in FIG. 1;

FIG. 14 is a sectional view taken along line F-F of the structure shown in FIG. 1;

FIG. 15 is a sectional view taken along line G-G of the structure shown in FIG. 1;

fig. 16 is a schematic diagram of the structure shown in fig. 12 in cooperation with two solenoid valves and a linear motor.

The reference numerals in the figures are illustrated as follows:

1-valve body 2-air inlet hole 3-inner ring air outlet hole

4-outer ring air outlet 5-air distribution cavity 6-air outlet

7-first seal ring 8-valve rod stroke cavity 9-spring stroke cavity

10-sliding blade 11-air distribution hole 12-return spring

13-pressure plate 14-vent hole 15-valve rod

16-cover plate 17-boss 18-air inlet

19-second spring 20-second sealing ring 21-pressure ring

22-linear motor 23-first spring 24-vent hole

25-first solenoid valve 26-second solenoid valve 27-longitudinal chute

28-lug 29-motor mounting hole 30-air inlet pipe connecting part

31-container gas supply pipe connecting part 32-outer ring gas supply pipe connecting part 33-first solenoid valve mounting channel

34-second solenoid valve mounting channel

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

A gas valve is shown in figures 1-16 and comprises a valve body 1, wherein an air inlet 2, an inner ring air outlet 3, an outer ring air outlet 4 and an air distribution cavity 5 are arranged in the valve body 1.

The position and mechanism of the air distribution cavity 5 in the valve body are shown in fig. 1, the air distribution cavity is a groove which is a substantially rectangular groove, the groove is positioned on the surface of the valve body, the air distribution cavity is formed by closing the groove by a cover plate 16, and the cover plate 16 and the valve body are fastened and connected through bolts in the embodiment. One end of the air outlet hole is intersected with the bottom surface of the air distribution cavity 5 to form an air outlet 6, the other end of the air outlet hole is divided into two paths, and a circle of first sealing ring 7 is arranged on the periphery of the air outlet 6 which respectively forms the inner ring air outlet hole 3 and the outer ring air outlet hole 4. And a valve rod stroke cavity 8 and a spring stroke cavity 9 are respectively arranged on the bottom surface of the groove and are respectively positioned on two opposite sides of the air outlet, and an air inlet 18 formed by the intersection of the air inlet 2 and the air distribution cavity is positioned on the side wall of the valve rod stroke cavity.

As shown in fig. 3 and 4, a sliding sheet 10 is arranged in the air distribution cavity 5, the sliding sheet 10 is in sliding fit with the bottom surface of the air distribution cavity, an air distribution hole 11 is arranged on the sliding sheet 10, the sliding sheet is in a sheet shape, in the embodiment, the air distribution hole is divided into three sections, and comprises a circular hole, a triangular hole and a strip-shaped hole which are sequentially connected, and the aperture is gradually reduced from the circular hole end to the strip-shaped hole end. When the sliding sheet slides linearly along the bottom of the groove, the overlapping area between the gas distribution hole 11 and the gas outlet 7 changes, the gas distribution amount is maximum when the sliding sheet is completely overlapped, the gas inlet is completely closed when the sliding sheet is completely overlapped, the strip-shaped hole end is firstly overlapped with the gas outlet when the sliding sheet is distributed, and the strip-shaped hole end finally leaves the gas outlet when the sliding sheet is closed.

The slip of gleitbretter is handled by the valve rod, and in this embodiment, the butt is adopted with the connected mode of gleitbretter to the valve rod, and valve rod 15 stretches into the valve rod stroke intracavity, is connected with the gleitbretter, and the traffic direction of valve rod is unanimous with the gleitbretter. And a return spring 12 is arranged in the spring stroke cavity 9, and the stroke directions of the valve rod 15, the slide sheet 10 and the return spring are consistent. The end face of the valve rod 15 is abutted against one side edge of the slide sheet 10, the other side edge of the return spring 12, which is opposite to the valve rod, is abutted against the slide sheet, and a positioning bulge is arranged on the side edge of the slide sheet, which is matched with the return spring, and extends into the return spring to be matched with the spring; the end face of the valve rod connected with the sliding piece is provided with a limiting hole, and the side edge of the sliding piece connected with the valve rod is also provided with a positioning bulge matched with the limiting hole on the valve rod.

The top surface of gleitbretter 10 sets up clamp plate 14, and the bottom surface of clamp plate 14 closely laminates with the top surface of gleitbretter, sets up air vent 24 on the clamp plate 14, and the air vent is just right with gas outlet 7 position, spacing cooperation between clamp plate 14 and the inside wall of distribution chamber 5, begin vertical spout 27 on two inside walls parallel with gleitbretter advancing direction, vertical spout is as the spacing groove, the extending direction of vertical spout is perpendicular mutually with the stroke direction of slide, has the lug 28 with spacing groove matching on the clamp plate, carry on spacingly to the clamp plate on the stroke of gleitbretter. The clamp plate top surface (keep away from the gleitbretter one side promptly) sets up the bulge loop that encircles the air vent, and first spring 23 is established to the bulge loop overcoat, and during apron 16 assembly, first spring butt clamp plate and apron respectively. The inboard boss 17 that has of apron, during the apron assembly, boss 17 and reset spring contact, further prevent that reset spring from popping out.

The sliding blade 10 is pushed by the valve stem 15, in this embodiment, the valve stem 15 is driven by the linear electric motor 22, the valve stem, the sliding blade and the linear electric motor are matched as shown in fig. 4 and fig. 16, a motor mounting hole 29 communicated with the air distribution cavity is arranged in the valve body 1, the linear electric motor 22 is mounted through the motor mounting hole 29, the valve stem 15 is coaxially connected with an output shaft of the linear electric motor, and can be fixedly connected or abutted, the valve stem 15 can linearly move back and forth in front of the mounting hole and the air distribution cavity, the outward opening of the mounting hole is hermetically mounted between the motor and the air distribution cavity, the inward opening is engaged with the air distribution cavity, a step hole is formed at the engagement position of the mounting hole and the air distribution cavity, the second spring 19 is arranged in the mounting hole, the second sealing ring 20 is arranged at the step position, the second sealing ring is an annular ring with a circular cross section, wherein, one side of the compression ring is abutted with the second sealing ring, the other side of the compression ring is abutted with the second spring, the other end of the second spring is abutted to the shell of the linear motor, and the second spring is sleeved outside the output shaft and the valve rod of the motor.

The air inlet channel, the inner ring air outlet channel, the outer ring air outlet channel and the motor mounting hole channel are basically located on the same horizontal plane, the air inlet channel comprises a whole-course air inlet passage and an air inlet pipe connecting part 30, the inner ring air outlet channel comprises a whole-course inner ring air outlet passage and an inner ring air supply pipe connecting part 31, the outer ring air outlet channel comprises a whole-course outer ring air outlet passage and an outer ring air supply pipe connecting part 33, a first electromagnetic valve 25 matched with the air inlet is arranged on the air inlet passage, a second electromagnetic valve 26 matched with the outer ring air outlet hole is arranged on the outer ring air outlet passage, the mounting modes of the first electromagnetic valve and the second electromagnetic valve and the matching mode of the, the first solenoid valve mounting passage 34 in which the first solenoid valve is mounted and the second solenoid valve mounting passage 35 in which the second solenoid valve is mounted are also located substantially on the same horizontal plane as the air inlet passage, the inner ring air outlet passage, the outer ring air outlet passage and the motor mounting hole passage.

The gas inlet pipe connecting portion is connected with the gas inlet pipe, the inner ring gas supply pipe connecting portion is connected with the inner ring gas supply pipe, the outer ring gas supply pipe connecting portion is connected with the outer ring gas supply pipe, gas enters the gas distribution cavity through the gas inlet hole 2, then enters the gas outlet 6 through the gas distribution hole 11, then is sent out through the inner ring gas outlet hole 3 and the outer ring gas outlet hole 4 respectively, the linear motor drives the sliding piece to slide linearly, the overlapping area of the gas distribution hole and outlet gas changes, gas distribution is carried out, the first electromagnetic valve controls the on-off of the gas inlet hole, and the second electromagnetic valve controls the on.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The gas valve is characterized in that a sliding piece used for sealing the gas outlet or the gas inlet and provided with a gas distribution hole is assembled in the gas distribution cavity, one end of the valve rod extends into the gas distribution cavity and is connected with the sliding piece, and when gas flow is adjusted, the valve rod pushes the sliding piece to move linearly in the gas distribution cavity, so that the overlapping area between the gas distribution hole and the gas inlet or the gas outlet is changed.

2. A gas valve as claimed in claim 1, wherein the valve body is provided with a recess in its surface and a cover plate covering the recess to form the gas distribution chamber.

3. The gas valve as claimed in claim 2, wherein the gas outlet is located at the bottom of the groove, the sliding piece is slidably engaged with the bottom of the groove to cover the gas outlet, and a first sealing ring engaged with the sliding piece is arranged at the periphery of the gas outlet.

4. The gas valve as claimed in claim 2, wherein a pressing plate for abutting against the sliding piece and a first spring for abutting against the pressing plate are provided between the cover plate and the sliding piece, two opposite side edges of the pressing plate are provided with lugs, and the side wall of the groove is provided with a longitudinal sliding groove matched with the lugs.

5. The gas valve as claimed in claim 1, wherein one end of the valve rod extends into the distribution chamber and abuts against the sliding piece, and a return spring is arranged in the distribution chamber and abuts against the sliding piece relative to the valve rod.

6. The gas valve as claimed in claim 5, wherein the valve rod has a limiting hole at its end extending into the air distribution chamber, and the sliding piece has positioning protrusions at its two ends for engaging with the limiting hole and the return spring.

7. A gas valve as claimed in claim 1 or 5, comprising a linear motor driving a valve stem, the other end of which abuts an output shaft of the linear motor.

8. The gas valve according to claim 7, wherein a step hole for the valve rod to pass through is formed in the valve body, a second sealing ring in sealing fit with the valve rod and a second spring acting on the second sealing ring through a pressing ring are arranged at the step of the step hole, and two ends of the second spring are respectively abutted to a shell of the linear motor and the pressing ring.

9. A gas valve as claimed in claim 1, wherein the inlet and outlet apertures lie substantially in the same plane.

10. The gas valve as claimed in claim 1, wherein the gas distribution hole comprises a circular hole, a triangular hole and a strip-shaped hole which are connected in sequence, and the hole diameter is gradually reduced from the circular hole end to the strip-shaped hole end.

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