CN210069017U - Air valve device for measuring gas adsorption constant - Google Patents
Air valve device for measuring gas adsorption constant Download PDFInfo
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- CN210069017U CN210069017U CN201920770268.1U CN201920770268U CN210069017U CN 210069017 U CN210069017 U CN 210069017U CN 201920770268 U CN201920770268 U CN 201920770268U CN 210069017 U CN210069017 U CN 210069017U
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Abstract
The utility model relates to a gas valve device for measuring gas adsorption constant, which comprises a small ball valve arranged above the working table surface of a gas adsorption constant measuring device, wherein the small ball valve is provided with a vertically arranged valve rod, the upper part of the small ball valve is provided with a rotary cylinder, and the piston rod of the rotary cylinder is connected with the valve rod through a universal coupling; the rotary cylinder is fixedly arranged on a working table surface through an upper support plate, and the small ball valve is fixedly arranged on the working table surface through a lower support plate arranged below the upper support plate; the utility model discloses break-make of control gas that can be nimble, quick only needs to just can close tightly with rotatory 90 degrees operation and very little turning moment, and the valve rod atress is comparatively balanced, durable more, and the cost is lower, and universal joint can allow unnecessary coincidence completely between the axis of valve rod and piston rod to reduce the assembly precision, improve assembly efficiency, realize the stable opening of bobble valve and close simultaneously, factor of safety is high.
Description
Technical Field
The utility model belongs to the technical field of gas experimental apparatus, concretely relates to gas valve device for gas adsorption constant survey.
Background
The gas adsorption constant measuring device is a device for testing the gas adsorption constant of a coal sample in a laboratory, and comprises a weighing system, a vacuum drying system, a degassing system, an inflation system, an adsorption system, a monitoring system and the like. The gas adsorption constant measuring device can provide reliable experimental data for comprehensive treatment of mine gas and development of coal bed gas.
The needle valve can bear higher pressure than other types of valves, has good sealing performance, is generally used for sealing gas or liquid medium with smaller flow and higher pressure, a gas adsorption constant measuring device needs a plurality of gas valves and is also mostly a needle valve, and the gas adsorption constant measuring device is mostly electrically adjusted or pneumatically adjusted to realize the automatic control of the needle valve. However, needle valves are forced-sealing valves, and pressure must be applied to the flap to force the sealing surface from leaking when the valve is closed. Therefore, when a medium enters the valve from the lower part of the valve clack, the operating force needs to overcome the resistance generated by the friction force of the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, and particularly, the gas valve used in the gas adsorption constant measuring device has smaller specification and thinner valve rod, so that the failure of the top bending of the valve rod is easier to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art and providing one kind and open and close rapidly, open and close position accurate, practical durable gas valve gear for gas adsorption constant survey.
The technical scheme of the utility model as follows:
a gas valve device for measuring a gas adsorption constant comprises a small ball valve arranged above a working table surface of a gas adsorption constant measuring device, wherein the small ball valve is provided with a vertically arranged valve rod, the upper part of the small ball valve is provided with a rotary cylinder, and a piston rod of the rotary cylinder is connected with the valve rod through a universal coupling; the rotary cylinder is fixedly arranged on a working table surface through an upper supporting plate, and the small ball valve is fixedly arranged on the working table surface through a lower supporting plate arranged below the upper supporting plate.
Furthermore, the lower end of the piston rod is in threaded connection or inserted connection with the upper part of the universal coupling, and is limited and fixed on the universal coupling through a shaft fixing screw arranged along the radial direction of the piston rod; the upper end of the valve rod is in threaded connection or inserted connection with the lower part of the universal coupling, and is limited and fixed on the universal coupling through a rod fixing screw arranged along the radial direction of the valve rod.
Furthermore, the upper surface of the valve body of the small ball valve is provided with a mounting hole in a protruding mode, and the small ball valve is mounted on the lower side of the lower support plate through a valve fixing screw matched with the mounting hole.
Furthermore, a limiting cylinder device is fixedly arranged on the lower support plate and comprises a limiting cylinder which is coaxial with the valve rod, a limiting long hole is formed in the wall of the limiting cylinder along the circumferential direction, a positioning piece is fixedly arranged on one side of the lower portion of the universal coupling, and one end of the positioning piece penetrates through the limiting long hole.
Furthermore, the maximum rotation angle of the positioning piece in the limiting long hole by taking the axis of the valve rod as a rotating shaft is 90 degrees.
Further, the limiting cylinder device comprises a cylinder mounting piece arranged at the bottom of the limiting cylinder, the cylinder mounting piece is fixed on the lower support plate through a fixing screw, and holes can be additionally formed in the lower support plate 82 to fix the cylinder mounting piece.
Furthermore, piece fixing holes are symmetrically formed in the cylinder mounting piece and fixed through valve fixing screws.
Furthermore, more than one rotating hole is formed in the cylinder mounting piece, and the rotating hole is a long hole extending along the circumferential direction of the cylinder mounting piece.
Further, the central angle corresponding to the rotating hole is at least 90 degrees.
Further, the number of the rotating holes is 2.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model uses the small ball valve to replace a needle valve used in an adsorption constant measuring device, compared with the needle valve, the rotary cylinder matched with the small ball valve can flexibly and rapidly control the on-off of fuel gas, only needs to rotate 90 degrees and a small rotating torque to close tightly, and the valve rod is more balanced in stress, more durable and lower in cost; the universal coupling is connected between the ball valve and the rotary cylinder, so that the valve rod and the axis of the piston rod are not required to be completely overlapped, the assembly precision can be reduced, the assembly efficiency is improved, the stable opening and closing of the ball valve are realized, and the safety coefficient is high;
the limiting cylinder device is matched with the positioning piece for use, so that the maximum angle of the valve rod in each rotation can be limited, the small ball valve can be accurately opened and closed each time, and complete opening and complete closing and precise control are realized;
the multi-angle installation of a spacing section of thick bamboo has been realized through setting up the rotation hole to guarantee that setting element and fibre slot hole that can furthest suit, so that a plurality of bobble valve adaptations in setting element and the gas adsorption constant measuring device need not to carry out the preparation of a spacing section of thick bamboo to every small ball valve, practices thrift the processing cost of a spacing section of thick bamboo.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a limiting cylinder device according to embodiment 2 of the present invention.
Fig. 3 is a plan view of a limiting cylinder device according to embodiment 3 of the present invention.
In the figure, a rotary cylinder 1, a piston rod 11, a cylinder air inlet 2, a cylinder air outlet 3, a universal coupling 4, a small ball valve 5, a valve rod 51, a mounting hole 52, a valve air inlet 6, a valve air outlet 7, an upper support plate 81, a lower support plate 82, a valve fixing screw 83, a positioning piece 91, a limiting cylinder 92, a cylinder mounting piece 93, a limiting long hole 94, a cylinder mounting hole 95, a rotating hole 97 and a rod fixing screw 98.
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.
Example 1
As shown in fig. 1, the gas valve device for measuring the gas adsorption constant comprises a small ball valve 5 arranged above a working table of the gas adsorption constant measuring device, wherein the small ball valve 5 is provided with a valve rod 51 vertically arranged, a rotary cylinder 1 is arranged at the upper part of the small ball valve 5, and a piston rod 11 of the rotary cylinder 1 is connected with the valve rod 51 through a universal coupling 4; the rotary cylinder 1 is fixedly arranged on the working table through an upper support plate 81, and the small ball valve 5 is fixedly arranged on the working table through a lower support plate 82 arranged below the upper support plate 81.
Preferably, the universal coupling 4 is a cross-axle type universal coupling, and has a simple structure, and is economical and practical.
Specifically, as shown in fig. 1, the lower end of the piston rod 11 is connected or plugged to the upper part of the universal coupling 4 by a thread, and the upper end of the valve rod 51 is connected or plugged to the lower part of the universal coupling 4 by a thread; preferably, the lower end of the piston rod 11 is provided with a shaft fixing screw along the radial direction of the piston rod 11, so that the piston rod 11 is limited and fixed at the upper end of the universal coupling 4, and the piston rod 11 and the universal coupling 4 are prevented from relative displacement; the upper end of the valve rod 51 is fixed to the lower end of the universal joint 4 in a limited manner by a rod fixing screw 98 arranged along the radial direction of the valve rod 51, so that relative displacement between the valve rod 51 and the universal joint 4 is prevented.
Specifically, as shown in fig. 1, a mounting hole 52 is protrudingly formed on an upper surface of a valve body of the ball valve 5, a thread is formed on an inner wall of the mounting hole 52, and the ball valve 5 is mounted on a lower side of a lower support plate 82 by a valve fixing screw 83 fitted into the mounting hole 52. Preferably, the number of the mounting holes 52 is two and symmetrically arranged.
Example 2
This example is another embodiment based on example 1, and the description of the same technical solution as in example 1 will be omitted, and only the technical solution different from example 1 will be explained.
As shown in fig. 1 and 2, the lower support plate 82 is fixedly provided with a limiting cylinder device, the limiting cylinder device includes a limiting cylinder 92 coaxial with the valve rod 51, a limiting long hole 94 is formed in the cylinder wall of the limiting cylinder 92 along the circumferential direction, a positioning element 91 is fixedly arranged on one side of the lower portion of the universal coupling 4, and one end of the positioning element 91 penetrates through the limiting long hole 94.
Specifically, as shown in fig. 1, the positioning element 91 is a rod or a cylinder sleeved on the valve fixing screw 83 and fixed by the valve fixing screw 83, and the positioning element 91 shown in fig. 1 is a cylinder, and a bottom hole for the valve fixing screw 83 to pass through is formed on a bottom surface of the cylinder.
It should be noted that the limiting cylinder 92 is only for providing one limiting long hole 94, so that the limiting cylinder 92 can remove part of the cylinder body of the limiting cylinder 92 along the circumferential direction on the premise of having the limiting long hole 94 with two closed ends, that is, the limiting cylinder 92 can be an arc-shaped plate, and the limiting long hole 94 is opened on the arc-shaped plate.
Preferably, since the ball valve is normally opened and closed by rotating 90 degrees, the positioning member 91 is rotated in the position-limiting long hole 94 by a maximum rotation angle of 90 degrees with the axis of the valve rod 51 as a rotation axis. When the rotary cylinder 1 rotates, the valve rod 51 can rotate by more than 90 degrees properly, but the valve rod 51 can only rotate by 90 degrees at a time due to the limiting function of the limiting long hole 94.
Specifically, the limiting cylinder device comprises a cylinder mounting piece 93 arranged at the bottom of the limiting cylinder 92, the cylinder mounting piece 93 is symmetrically provided with a piece fixing hole, a hole can be formed in the lower support plate 82 to achieve mounting of the cylinder mounting piece 93, and preferably, the cylinder mounting piece 93 and the small ball valve 5 are fixed on the lower support plate 82 through a valve fixing screw 83.
Example 3
This example is another embodiment based on example 2, and the description of the same technical solution as in example 2 will be omitted, and only the technical solution different from example 2 will be explained.
The piston rod 11 is fixedly connected with the upper part of the universal coupling 4 through a shaft fixing screw so as to prevent the piston rod 11 from displacing circumferentially or vertically after being connected with the universal coupling 4, the valve rod 51 is fixedly connected with the lower part of the universal coupling 4 through a valve fixing screw 83 so as to prevent the valve rod 51 from displacing circumferentially or vertically after being connected with the universal coupling 4, obviously, positioning holes capable of being matched with the fixing screws are formed in the piston rod 11 and the valve rod 51, the radial directions of the piston rod 11 and the valve rod 51 can be distinguished due to the existence of the positioning holes, but the directions of each piston rod 11 and each valve rod 51 cannot be ensured to be consistent in the assembling process of the small ball valve 5 and the piston rod 11.
However, in the adsorption constant measuring device, a plurality of air valves are usually required, and accordingly, the position of the long limit hole 94 of the limit cylinder device associated with each air valve is different, specifically, the relative position of the long limit hole 94 and the cylinder mounting hole 95 is different, although the rotation of the position of the long hole 94 can be achieved by forming a plurality of pairs of the cylinder mounting holes 95, an appropriate distance must exist between the adjacent two cylinder mounting holes 95, so as to ensure that the barrel mounting plate 93 still keeps proper strength after being screwed on the lower support plate 82, so as to ensure that the limiting barrel 92 is firmly mounted, due to the presence of this "appropriate distance", there must be a case where the long restriction hole 94 does not fit into the rotational position of the positioning member 91, in order to adapt the angle of the mounting piece 93 to the rotational position of the positioning member 91, a rotational hole 97 is employed in place of the cartridge mounting hole 95 in the present embodiment.
As shown in fig. 3, the tube attachment piece 93 is provided with one or more rotation holes 97, and the rotation holes 97 are long holes extending in the circumferential direction of the tube attachment piece 93.
As shown in fig. 3, the central angle corresponding to the rotation hole 97 is between 90 degrees and 180 degrees, and it should be noted that, in practice, since the positioning member 91 has a width or a radius, the central angle corresponding to the rotation hole 97 must be larger than 90 degrees, and in a plan view of the contour of the rotation hole 97, the arc length of the rotation hole 97 is the width or the radius of the positioning member 91 plus the length of a quarter arc of the top view contour of the limiting cylinder 92.
Preferably, the number of the rotation holes 97 is 2, and the central angle of the rotation holes 97 is between 90 and 120 degrees.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A gas valve device for measuring a gas adsorption constant is characterized in that: the gas adsorption constant measuring device comprises a small ball valve (5) arranged above a working table surface of the gas adsorption constant measuring device, wherein the small ball valve (5) is provided with a vertically arranged valve rod (51), a rotary cylinder (1) is arranged at the upper part of the small ball valve (5), and a piston rod (11) of the rotary cylinder (1) is connected with the valve rod (51) through a universal coupling (4); the rotary cylinder (1) is fixedly arranged on a working table surface through an upper support plate (81), and the small ball valve (5) is fixedly arranged on the working table surface through a lower support plate (82) arranged below the upper support plate (81).
2. The gas valve device for gas adsorption constant measurement according to claim 1, wherein: the lower end of the piston rod (11) is in threaded connection or inserted connection with the upper part of the universal coupling (4), and is limited and fixed on the universal coupling (4) through a shaft fixing screw arranged along the radial direction of the piston rod (11); the upper end of the valve rod (51) is in threaded connection or inserted connection with the lower part of the universal coupling (4), and is limited and fixed on the universal coupling (4) through a rod fixing screw (98) arranged along the radial direction of the valve rod (51).
3. The gas valve device for gas adsorption constant measurement according to claim 1, wherein: the upper surface of the valve body of the small ball valve (5) is provided with a mounting hole (52) in a protruding mode, and the small ball valve (5) is mounted on the lower side of the lower support plate (82) through a valve fixing screw (83) matched with the mounting hole (52).
4. The gas valve device for gas adsorption constant measurement according to claim 1, wherein: the lower support plate (82) is fixedly provided with a limiting cylinder device, the limiting cylinder device comprises a limiting cylinder (92) coaxial with the valve rod (51), a limiting long hole (94) is formed in the cylinder wall of the limiting cylinder (92) along the circumferential direction, a positioning piece (91) is fixedly arranged on one side of the lower portion of the universal coupling (4), and one end of the positioning piece (91) penetrates through the limiting long hole (94).
5. The gas valve device for gas adsorption constant measurement according to claim 4, wherein: the positioning piece (91) is arranged in the limiting long hole (94) and takes the axis of the valve rod (51) as a rotating shaft, and the maximum rotating angle is 90 degrees.
6. The gas valve device for gas adsorption constant measurement according to claim 4, wherein: the limiting cylinder device comprises a cylinder mounting piece (93) arranged at the bottom of the limiting cylinder (92), and the cylinder mounting piece (93) is fixed on the lower support plate (82) through a fixing screw.
7. The gas valve device for gas adsorption constant measurement according to claim 6, wherein: the cylinder mounting piece (93) is symmetrically provided with piece fixing holes, and the piece fixing holes are fixed through valve fixing screws (83).
8. The gas valve device for gas adsorption constant measurement according to claim 6, wherein: the cylinder mounting piece (93) is provided with more than one rotating hole (97), and the rotating hole (97) is a long hole extending along the circumferential direction of the cylinder mounting piece (93).
9. The gas valve device for gas adsorption constant measurement according to claim 8, wherein: the central angle corresponding to the rotating hole (97) is at least 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770268.1U CN210069017U (en) | 2019-05-27 | 2019-05-27 | Air valve device for measuring gas adsorption constant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770268.1U CN210069017U (en) | 2019-05-27 | 2019-05-27 | Air valve device for measuring gas adsorption constant |
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| Publication Number | Publication Date |
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| CN210069017U true CN210069017U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920770268.1U Active CN210069017U (en) | 2019-05-27 | 2019-05-27 | Air valve device for measuring gas adsorption constant |
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| CN (1) | CN210069017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928005A (en) * | 2020-07-23 | 2020-11-13 | 河南宜和城保装备科技实业有限公司 | Intelligent control system and method for opening and closing valve |
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2019
- 2019-05-27 CN CN201920770268.1U patent/CN210069017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928005A (en) * | 2020-07-23 | 2020-11-13 | 河南宜和城保装备科技实业有限公司 | Intelligent control system and method for opening and closing valve |
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