CN209925745U

CN209925745U - Gas valve with clear gear hand feeling

Info

Publication number: CN209925745U
Application number: CN201822207026.XU
Authority: CN
Inventors: 李雪波
Original assignee: NINGBO LAITE GAS STOVES CO Ltd
Current assignee: NINGBO LAITE GAS STOVES CO Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-01-10
Anticipated expiration: 2028-12-26

Abstract

The utility model relates to a gas valve with clear hand feeling of gears, which comprises a valve seat, a valve cover and a first spring which is arranged at the bottom of a valve rod and can keep the valve rod moving upwards, wherein a convex driving column is arranged at the side part of the valve rod; the inner top surface of the valve cover is provided with a plurality of retaining grooves which are arranged at intervals along the circumference; the valve rod is provided with a gland which can move up and down along with the valve rod, and the gland is positioned above the valve cover; the method is characterized in that: the valve rod is sleeved with a second spring, the second spring is supported between the gland and the valve cover and enables the valve rod to keep moving upwards, and the valve rod enables the driving column to keep moving upwards under the combined action of the first spring and the second spring and enables the driving column and the blocking groove to form a concave-convex matching structure. Two springs act on simultaneously, increase the contact pressure who drives the post and keep off the position groove, and the valve rod keeps off the position at rotatory in-process and feels strength and strengthen and feel clearly and definitely, does not change case inner spring, does not influence the life of case, is fit for reforming transform on the basis of original gas valve.

Description

Gas valve with clear gear hand feeling

Technical Field

The utility model belongs to the technical field of the gas valve, especially, relate to a keep off position and feel clear and definite gas valve.

Background

A gas plug valve in a gas cooker is a manual operation valve for controlling the supply of a gas source. Ordinary plug valve is general including opening the valve body that has inlet channel and outlet channel, be equipped with the case that can revolve in the valve body, case upper portion has the spring chamber, open the lateral wall in spring chamber has the breach, the case lower part is equipped with the chamber of ventilating, wear to be equipped with on the valve body and drive the rotatory valve rod of case, the lateral wall of valve rod have with breach complex drive post, the lower extreme top of valve rod is held and is made the valve rod keep shifting up and break away from the spring that is connected the trend with the case, the spring is located the spring intracavity on the case, it has big fire hole and the little fire hole that is used for communicateing inlet channel and outlet channel to open on the chamber lateral. During the use, the user operates the valve rod through the knob that sets up on operating panel, generally presses knob and anticlockwise rotation earlier, can drive case anticlockwise rotation, makes big fire hole on the case be linked together with the inlet channel in the valve body, and at this moment, the air supply can be through inlet channel, big fire hole, ventilate chamber and outlet channel and follow the nozzle blowout, supplies the gas utensil to use. When the fire is to be reduced, the user continues to rotate the knob anticlockwise, so that the small fire hole in the valve core is communicated with the air inlet channel in the valve body, and the flow channel of the air source is reduced, thereby achieving the purpose of reducing the fire. If the user wants to change the small fire to the maximum fire again, namely, the valve core is rotated, so that the valve core is changed from the communication between the small fire hole of the valve core and the air inlet channel in the valve body to the communication between the large fire hole of the valve core and the air inlet channel in the valve body.

For example, a gas cock valve is disclosed in the chinese utility model patent No. ZL201020181562.8 (publication No. CN 201672087U). When the fire intensity of the valve rod is adjusted in the existing plug valve, the valve rod does not have damping in rotation, the valve rod can be easily driven to rotate, the hand feeling is poor, the valve rod is easy to pass through or not reach when rotating, and therefore the fire intensity is difficult to control accurately when the fire intensity is adjusted.

At present, a gas valve with a fire hole retaining function is arranged on the market through a steel ball and a pit on a valve cover, the steel ball is easy to climb out of the pit, the pits are shallow in design, the edge of the pit is easy to wear, after the pits are subjected to rotational friction for tens of thousands of times, the fire control retaining effect is deficient, and then the fire intensity cannot be accurately controlled.

As an improvement, the chinese utility model patent No. ZL201720037387.7 (publication No. CN206958304U) applied by the applicant discloses a fire control gear structure of a gas valve, which includes a valve seat, a valve cover and a valve rod, wherein the valve cover is fixed on the valve seat, the bottom of the valve rod is provided with a spring for keeping the valve rod moving upwards, and the side of the valve rod is provided with a convex driving column; the method is characterized in that: the valve rod enables the driving post to keep moving upwards under the action of the spring to form a concave-convex matching structure with the concave part; in the process of rotating the valve rod, the driving post can climb up along the inclined plane on one side of the boss part and enter into the other adjacent groove part. The structure improves the gear hand feeling and can control the rotation angle of the valve rod more accurately.

Damping force only comes from the inside spring of case, and the strength is less, and the customer is at the in-service use in-process, and customer reaction product gear/damping is felt light excessively, and is not clear enough, uses to experience and feels and to be improved, if increase the intensity of the inside spring of case, though multiplicable damping effect, but can reduce the life of case greatly.

In order to realize ignition, a microswitch is generally arranged on the valve body, a pressure plate which can move up and down along with the valve rod but does not rotate along with the head of the valve rod is arranged on the valve rod, the pressure plate is matched with the microswitch, when the valve rod moves down, the pressure plate presses the microswitch along with the downward movement of the pressure plate, and the microswitch controls ignition. The existing pressing plate is constrained on the valve rod through two clamp springs which are arranged at an upper interval and a lower interval, and the pressing plate is inconvenient to mount.

Disclosure of Invention

The utility model aims to solve the technical problem that a valve rod keeps off the position at rotatory in-process and feels strength enhancement and feel clear and definite gas valve to above-mentioned prior art current situation and provide.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a gas valve with clear and definite gear hand feeling comprises a valve seat, a valve cover and a valve rod, wherein the valve cover is fixed on the valve seat, the valve rod penetrates through the valve cover and can move up and down, a first spring for keeping the valve rod moving up is arranged at the bottom of the valve rod, and a convex driving column is arranged at the side part of the valve rod; the inner top surface of the valve cover is provided with a plurality of retaining grooves which are arranged at intervals along the circumference; the valve rod is provided with a gland which can move up and down along with the valve rod, and the gland is positioned above the valve cover; the method is characterized in that: the valve rod is sleeved with a second spring, the second spring is supported between the gland and the valve cover and enables the valve rod to keep moving upwards, and the valve rod enables the driving column to keep moving upwards under the combined action of the first spring and the second spring and enables the driving column and the blocking groove to form a concave-convex matching structure.

As an improvement, an ignition microswitch is fixed on one side of the valve cover, and the gland can move up and down along with the valve rod to trigger the ignition microswitch. Therefore, a new function can be given to the gland, namely, the micro switch is triggered to control ignition when the gas valve is opened for debugging.

Preferably, the gland is constrained to the valve cover so as to be movable only up and down relative to the valve cover. The gland can not rotate and deviate relative to the valve rod, and the ignition microswitch can be triggered by downward movement of the gland.

As a specific structure for restricting the movement of the gland, preferably, the bottom surface of the gland has a guide post extending downward, and the valve cover has a guide hole for inserting and guiding the guide post. Through the guide fit of the guide post and the guide hole, the gland cannot rotationally deviate relative to the valve rod.

The improved structure is characterized in that an annular clamping groove is formed in the peripheral wall of the valve rod, a through hole for the valve rod to penetrate through is formed in the middle of the gland, a plurality of elastic clamping pins are arranged at intervals along the circumference and extend upwards at the periphery of the through hole, and a clamping portion extending towards the circle center to be clamped into the annular clamping groove is formed in the top of each elastic clamping pin. This gland passes through in the extruded mode elasticity card foot card goes into ring groove for the gland realizes can following the purpose that the valve rod reciprocated together, and during the rotation simultaneously, card portion also can be in ring groove relative deflection, can not drive the gland again rotatory, and it is more convenient to assemble.

The inner top surface of the valve cover is provided with a plurality of boss parts which are arranged at intervals along the circumference, two side surfaces of each boss part are inclined surfaces which are inclined outwards from the top surface to the bottom surface, and two opposite inclined surfaces in two adjacent boss parts and the inner top surface of the valve cover between the two boss parts form the blocking groove with the trapezoidal cross section; in the process of rotating the valve rod, the driving post can climb up along the inclined plane on one side of the boss part and enter into the adjacent other blocking groove. Because of two medial surfaces in the fender position groove are the inclined plane, drive the post and keep off the contact of line and face between the position groove all the time, compare for the cambered surface with current fender position tank bottom surface, drive the area of contact of post and fender position groove and diminish, drive the post promptly and at rotatory in-process, it is little to the wearing and tearing in fender position groove, long-time the use, keep off the position groove and also can not warp, this fire control keeps off the position structure and can also keep good feeling and fire control precision after long-time the use.

Preferably, the inclined surfaces of both sides of the boss portion and the bottom surface of the stopper groove form an included angle of 100 ° to 150 °. And is most preferably 135 deg..

The periphery of the inner top surface of the valve cover is provided with a blocking part which is arc-shaped and convex, two end surfaces of the blocking part form limit positions for blocking the driving column, and the boss part is arranged between the two end surfaces of the blocking part. This configuration can limit the maximum angle of rotation of the valve stem.

The bottom surface of the gland is provided with a limiting table extending downwards, and the upper end of the second spring is sleeved on the limiting table. The limiting table has a restraining effect on the spring. Preferably, the second spring is a conical spring.

Compared with the prior art, the utility model has the advantages of: under the combined action of the first spring and the second spring, the driving column and the gear groove on the valve cover form interference fit, the valve rod forms a certain gear in the rotating process, the operation hand feeling of a user is better, in addition, the interference fit of the driving column and the gear groove can enable the valve rod to have snap indicating sound in the rotating process, the rotating angle of the valve rod can be roughly judged according to the frequency of the indicating sound, and the rotating angle of the valve rod can be accurately controlled; importantly, two springs act on simultaneously, increase the contact pressure who drives post and fender position groove, and the valve rod keeps off the position at rotatory in-process and feels strength and strengthen and feel clearly and definitely, does not change case inner spring, does not influence the life of case, is fit for reforming transform on the basis of original gas valve.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded perspective view of an embodiment of the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of the valve rod and the stop groove in the embodiment of the present invention;

fig. 4 is a bottom view of the valve cover in an embodiment of the present invention;

fig. 5 is an enlarged view of fig. 4 at a.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, it is a preferred embodiment of the present invention.

The utility model provides a fire control of gas valve keeps off position structure, includes disk seat 1, valve gap 2 and valve rod 3, and valve gap 2 is fixed on disk seat 1, and valve rod 3 wears to establish and can reciprocate on valve gap 2, and the bottom of valve rod 3 is equipped with the first spring 4a that makes valve rod 3 keep the trend of shifting up, and the lateral part of valve rod 3 is equipped with bellied drive post 31, is equipped with case 9 in the disk seat 1, and case 9 drives the rotation by the drive post 31 of valve rod 3.

The inner top surface of the valve cover 2 is provided with a plurality of boss parts 5 which are arranged at intervals along the circumference, two side surfaces of each boss part 5 are inclined surfaces 51 which are inclined outwards from the top surface to the bottom surface, and two opposite inclined surfaces 51 in two adjacent boss parts 5 and the inner top surface of the valve cover 2 between the two boss parts 5 form a retaining groove 6 with a trapezoidal cross section. The periphery of the inner top surface of the valve cover 2 is provided with a section of blocking part 21 which is convex in an arc shape, two end surfaces 211 of the blocking part 21 form a limit position for blocking the moving column 31, and the boss part 5 is arranged between the two end surfaces 211 of the blocking part 21. The included angle between the inclined surfaces 51 at both sides of the boss portion 5 and the bottom surface of the catching groove 6 is 100 to 150 degrees, and 135 degrees is the best.

An ignition microswitch 7 is fixed on one side of the valve cover 2, a gland 8 which can move up and down along with the valve rod 3 to trigger the ignition microswitch 7 is arranged on the valve rod 3, the gland 8 is restricted on the valve cover 2 and can only move up and down relatively, an annular clamping groove 32 is arranged on the peripheral wall of the valve rod 3, a through hole 81 for the valve rod 3 to pass through is arranged in the middle of the gland 8, a plurality of elastic clamping feet 82 which are arranged at intervals along the circumference and extend upwards are arranged on the periphery of the through hole 81, and a clamping part 821 which extends towards the circle center and is clamped in the annular clamping groove 32 is arranged on the top of each elastic clamping foot. The bottom surface of the gland 8 is provided with a guide post 83 which extends downwards, and the valve cover 2 is provided with a guide hole 22 for inserting and guiding the guide post 83.

The cover is equipped with second spring 4b on the valve rod 3, and second spring 4b supports between gland 8 and valve gap 2 and makes valve rod 3 keep moving up the trend, and valve rod 3 makes drive post 31 keep moving up under the combined action of first spring 4a and second spring 4b and can form unsmooth cooperation structure with keeping off a groove 6. During the rotation of the valve rod 3, the driver pin 31 can climb up the inclined surface 51 on the side of the boss portion 5 and enter the adjacent other catch groove 6. The bottom surface of the gland 8 is provided with a limiting platform 84 extending downwards, and the upper end of the second spring 4b is sleeved on the limiting platform 84. The second spring 4b is a conical spring.

Under the combined action of the first spring 4a and the second spring 4b, the driving column 31 is in interference fit with the retaining groove 6 with the trapezoidal cross section on the inner top surface of the valve cover 2, a certain retaining position is formed in the rotating process of the valve rod 3, and the operation hand feeling of a user is better; in addition, the interference fit of the driving column 31 and the retaining groove 6 can cause the valve rod 3 to have snap indicating sound in the rotating process, the rotating angle of the valve rod 3 can be roughly judged according to the frequency of the indicating sound, and the rotating angle of the valve rod 3 can be accurately controlled; because of two medial surfaces of keeping off the position groove 6 are inclined plane 51, drive the contact for line and face between post 31 and the position groove 6 all the time, compare for the cambered surface with current fender position tank bottom surface, the area of contact who drives post and keep off the position groove diminishes, drives post 3 promptly and at rotatory in-process, and is little to the wearing and tearing of position groove 6, long-time the use, and the position groove 6 can not warp yet, and this fire control keeps off a position structure and can also keep good feeling and fire control precision after long-time the use.

More importantly, the two springs act simultaneously, the contact pressure of the driving column 31 and the stop groove 6 is increased, the valve rod 3 is in the rotating process, the stop position is used for hand feeling strength enhancement, the hand feeling is clear and clear, the user experience is good, the spring inside the valve core is not changed, the service life of the valve core is not influenced, and the gas valve is suitable for being transformed on the basis of an original gas valve.

Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas valve with clear gear hand feeling comprises a valve seat (1), a valve cover (2) and a valve rod (3), wherein the valve cover (2) is fixed on the valve seat (1), the valve rod (3) penetrates through the valve cover (2) and can move up and down, a first spring (4a) enabling the valve rod (3) to keep moving up is arranged at the bottom of the valve rod (3), and a convex driving column (31) is arranged at the side part of the valve rod (3); the inner top surface of the valve cover (2) is provided with a plurality of retaining grooves (6) which are arranged at intervals along the circumference; a gland (8) capable of moving up and down along with the valve rod (3) is arranged on the valve rod (3), and the gland (8) is positioned above the valve cover (2); the method is characterized in that: the valve rod (3) is sleeved with a second spring (4b), the second spring (4b) is supported between the gland (8) and the valve cover (2) and enables the valve rod (3) to keep moving upwards, and the valve rod (3) enables the driving column (31) to keep moving upwards under the combined action of the first spring (4a) and the second spring (4b) and forms a concave-convex matching structure with the blocking groove (6).

2. The gas valve with clear gear hand feeling according to claim 1, is characterized in that: an ignition microswitch (7) is fixed on one side of the valve cover (2), and the gland can move up and down along with the valve rod (3) to touch the ignition microswitch (7).

3. The gas valve with clear gear hand feeling according to claim 2, is characterized in that: the gland (8) is restricted on the valve cover (2) and can only move up and down relatively.

4. The gas valve with clear gear hand feeling according to claim 3, is characterized in that: the bottom surface of the gland (8) is provided with a guide post (83) which extends downwards, and the valve cover (2) is provided with a guide hole (22) for the guide post (83) to insert and guide.

5. The gas valve with clear gear hand feeling according to claim 2, is characterized in that: open on the perisporium of valve rod (3) has ring groove (32), the middle part of gland (8) is equipped with perforation (81) that supply valve rod (3) to pass, and the periphery of perforation (81) has a plurality of elastic card feet (82) that arrange and upwards extend the setting along circumference interval, and the top of elastic card foot (82) has to extend to centre of a circle department in order to block in card portion (821) in ring groove (32).

6. The gas valve with clear gear hand feeling according to claim 1, is characterized in that: the inner top surface of the valve cover (2) is provided with a plurality of boss parts (5) which are arranged at intervals along the circumference, two side surfaces of each boss part (5) are inclined surfaces (51) which are inclined outwards from the top surface to the bottom surface, and the two opposite inclined surfaces (51) in the two adjacent boss parts (5) and the inner top surface of the valve cover (2) between the two boss parts (5) form the blocking groove (6) with the trapezoidal cross section; in the process of rotating the valve rod (3), the driving post (31) can climb along the inclined surface (51) on one side of the boss part (5) and enter the adjacent other blocking groove (6).

7. The gas valve with clear gear hand feeling according to claim 6, is characterized in that: the included angle between the inclined planes (51) at the two sides of the boss part (5) and the bottom surface of the stop groove (6) is 100-150 degrees.

8. The gas valve with clear gear hand feeling according to claim 6, is characterized in that: the inner top surface periphery of valve gap (2) is formed with one section and is the bellied fender position portion (21) of arc, keeps off two terminal surfaces (211) of position portion (21) and forms the utmost point spacing that drives post (31) fender position, boss portion (5) set up between two terminal surfaces (211) of fender position portion (21).

9. The gas valve with clear gear hand feeling according to claim 1, is characterized in that: the bottom surface of the gland (8) is provided with a limiting table (84) extending downwards, and the upper end of the second spring (4b) is sleeved on the limiting table (84).

10. The gas valve with clear gear hand feeling according to claim 9, is characterized in that: the second spring (4b) is a conical spring.