CN210890461U

CN210890461U - Pressure valve for gas storage tank

Info

Publication number: CN210890461U
Application number: CN201921816027.2U
Authority: CN
Inventors: 钱建庆; 王永富; 曹云龙
Original assignee: Shanghai Cool Refrigeration Equipment Co ltd
Current assignee: Shanghai Cool Refrigeration Equipment Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-06-30
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a pressure valve for gas holder, which comprises a valve body, the valve cap, the manometer, adjust the cap, be provided with coupling mechanism between regulation cap and the valve body, coupling mechanism include with valve body intercommunication cylinder, with cylinder integrated into one piece's first connecting pipe, with regulation cap integrated into one piece's second connecting pipe, with second connecting pipe integrated into one piece's third connecting pipe, a go-between for connecting in first connecting pipe and second connecting pipe, first connecting thread has been seted up to the outer peripheral face of first connecting pipe, second connecting thread has been seted up to the inner peripheral surface of first connecting pipe, third connecting thread has been seted up to the outer peripheral face of second connecting pipe, fourth connecting thread with second connecting thread threaded connection is seted up to the outer peripheral face of third connecting pipe, fifth connecting thread with first connecting thread and third connecting thread threaded connection is seted up to the inner peripheral surface of go-between. The connecting ring is used for sealing the connecting position, so that the sealing performance of the pressure valve is improved, and the air leakage of the pressure valve is reduced.

Description

Pressure valve for gas storage tank

Technical Field

The utility model relates to a gas fills dress technical field, especially relates to a pressure valve for gas holder.

Background

The pressure valve of the air storage tank is used as an important accessory on the air storage tank, and often plays a more critical role for the whole system, and the pressure in the air storage tank can be adjusted by adjusting an adjusting knob arranged on a valve body.

At present, chinese patent with publication number CN202441605U in the prior art discloses a minimum pressure valve of a high-pressure screw compressor, which comprises a cylinder body and a valve body, wherein the lower part of the cylinder body is located at the upper end inside the valve body, a pressure maintaining spring is arranged at the upper end of the inner wall of the cylinder body, a plane bearing is arranged at the lower end of the pressure maintaining spring, a check spring is arranged below the plane bearing, a pressure maintaining valve core is arranged outside the lower end of the check spring, check valve cores are arranged on two sides of the lower end of the pressure maintaining valve core, a minimum pressure valve inlet is arranged on the valve body at the lower end of the check valve core, and a. There is no need to use a highly stressed spring to adjust the opening pressure.

The technical scheme has the following defects: the pressure regulating cap is only installed through threaded connection, no sealing measures are provided, and the sealing performance needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pressure valve for gas holder utilizes the connecting ring to seal the junction, has improved the leakproofness of pressure valve, and then the condition that reduces pressure valve gas leakage takes place.

The technical purpose of the utility model is realized through following technical scheme:

a pressure valve for a gas storage tank comprises a valve body connected with the gas storage tank through threads, a valve cap positioned at the top of the valve body, a pressure gauge arranged on one side of the valve body, and an adjusting cap arranged on the other side of the valve body and used for adjusting the pressure gauge, wherein a connecting mechanism is arranged between the adjusting cap and the valve body and comprises a cylinder which is communicated with the valve body and integrally formed with the side wall of the cylinder, a first connecting pipe which is integrally formed with one end of the valve body and a second connecting pipe which is close to the adjusting cap, a third connecting pipe which is integrally formed with one end of the adjusting cap and a connecting ring which is connected with the first connecting pipe and the second connecting pipe, the outer peripheral surface of the first connecting pipe is provided with first connecting threads, and the inner peripheral surface of the first connecting pipe is provided with second connecting threads, the outer peripheral surface of the second connecting pipe is provided with a third connecting thread, the outer peripheral surface of the third connecting pipe is provided with a fourth connecting thread in threaded connection with the second connecting thread, and the inner peripheral surface of the connecting ring is provided with a fifth connecting thread in threaded connection with the first connecting thread and the third connecting thread.

Through the technical scheme, the fourth connecting thread and the second connecting thread are connected in a threaded mode, the second connecting pipe is abutted to the first connecting pipe, the connecting ring is rotated to seal the joint of the first connecting pipe and the second connecting pipe, the sealing performance of the pressure valve is improved, and the air leakage of the pressure valve is reduced.

The utility model discloses further set up to: one end of the first connecting pipe, which is far away from the cylinder, is provided with a convex edge which is integrally formed with the first connecting pipe, the outer diameter of the convex edge is consistent with that of the first connecting pipe, and the inner diameter of the convex edge is larger than that of the first connecting pipe; the junction of second connecting pipe with the third connecting pipe be provided with second connecting pipe integrated into one piece's bulge loop, the bulge loop is kept away from the terminal surface of the one end of second connecting pipe with first connecting pipe is kept away from the terminal surface butt of cylinder one end.

Through above-mentioned technical scheme, when the second connecting pipe butt in first connecting pipe, the bulge loop can butt to the terminal surface of first connecting pipe to be favorable to improving the leakproofness between first connecting pipe and the second connecting pipe.

The utility model discloses further set up to: a sealing ring is arranged in the convex edge and is abutted against the end face, far away from one end of the cylinder, of the first connecting pipe.

Through above-mentioned technical scheme, the setting of sealing washer has further improved the leakproofness between first connecting pipe and the second connecting pipe.

The utility model discloses further set up to: the end face, far away from the end of the cylinder, of the first connecting pipe is provided with a groove, and the sealing ring is located in the groove.

Through above-mentioned technical scheme, being provided with of recess does benefit to the slip that reduces the sealing washer to the sealing washer of being convenient for plays sealed effect.

The utility model discloses further set up to: the length of the connecting ring is greater than that of the second connecting pipe.

Through above-mentioned technical scheme, set up the length of go-between into being greater than the length of second connecting pipe, can make when the terminal surface butt of go-between and second connecting pipe, the go-between still can seal the junction of second connecting pipe and first connecting pipe, is favorable to guaranteeing the sealed effect of go-between.

The utility model discloses further set up to: the outer wall of the connecting ring is provided with an anti-skidding groove, and the length direction of the anti-skidding groove is consistent with that of the connecting ring.

Through the technical scheme, the friction force of the circumferential surface of the connecting ring is increased due to the arrangement of the anti-skidding grooves, and the possibility of skidding when an operator reuses the connecting ring is reduced.

The utility model discloses further set up to: the hexagonal edge integrally formed with the connecting ring is arranged at the end part of one end of the connecting ring, and the diameter of the inner tangent circle of the hexagonal edge is equal to the outer diameter of the connecting ring.

Through above-mentioned technical scheme, operating personnel can utilize hexagonal spanner card at the hexagonal edge to rotate the go-between, thereby the operating personnel of being convenient for rotates the go-between.

The utility model discloses further set up to: the second connecting pipe is sleeved with a rubber pad, and the rubber pad is abutted to the end face, close to one end of the second connecting pipe, of the adjusting cap.

Through above-mentioned technical scheme, the rubber pad is soft material, and when the go-between butt was in the terminal surface of second connecting pipe, the rigid contact of go-between and second connecting pipe can be cushioned in the setting of rubber pad, reduces the damage to the go-between.

To sum up, the utility model discloses a beneficial technological effect does:

1. through setting up the go-between, make the go-between seal the junction of first connecting pipe and second connecting pipe through rotatory go-between to the leakproofness of pressure valve has been improved, and then the condition that reduces pressure valve gas leakage takes place.

2. Through setting up the bulge loop, the bulge loop can butt joint to the terminal surface of first connecting pipe to be favorable to improving the leakproofness between first connecting pipe and the second connecting pipe.

3. Through setting up the sealing washer, further improved the leakproofness between first connecting pipe and the second connecting pipe.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, mainly illustrating the overall construction;

fig. 2 is a partial structural schematic diagram of the present invention, mainly illustrating the structure of the connecting mechanism;

fig. 3 is a partial structural schematic diagram of the present invention, mainly illustrating the structure of the first connection pipe.

Reference numerals: 1. a valve body; 2. a bonnet; 3. a pressure gauge; 4. an adjusting cap; 5. a connecting mechanism; 51. a cylinder; 52. a first connecting pipe; 521. a first connecting thread; 522. a second connecting thread; 523. a convex edge; 524. a groove; 53. a second connecting pipe; 532. a convex ring; 531. a third connecting thread; 54. a third connecting pipe; 541. a fourth connecting thread; 55. a connecting ring; 551. a fifth connecting thread; 552. an anti-slip groove; 553. hexagonal edges; 6. a seal ring; 7. and (7) a rubber pad.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A pressure valve for a gas storage tank is shown in figure 1 and comprises a valve body 1, a valve cap 2, a pressure gauge 3, an adjusting cap 4 and a connecting mechanism 5. The valve body 1 is connected to the air storage tank in a threaded manner and is used for detecting and adjusting the pressure value of the air storage tank; the valve cap 2 is arranged at one end of the valve body 1 far away from the end connected with the gas storage tank; the surface of the pressure gauge 3 is arranged on the valve body 1, and the pressure gauge 3 can display the pressure value of the gas storage tank; the adjusting cap 4 is arranged on the valve body 1 and is used for adjusting the pressure value of the pressure gauge 3; the connecting mechanism 5 is located between the adjusting cap 4 and the valve body 1, and is used for sealing connection between the adjusting cap 4 and the valve.

As shown in fig. 1 and 2, the connection mechanism 5 includes a cylinder 51, a first connection pipe 52, a second connection pipe 53, a third connection pipe 54, and a connection ring 55. The cylinder 51 is a cylinder with a hollow inner part, and one end of the cylinder 51 is integrally formed with the valve body 1; the first connecting pipe 52 is a cylinder with a hollow inner part, the outer diameter of the first connecting pipe 52 is smaller than the diameter of the cylinder 51, one end of the first connecting pipe 52 and one end of the cylinder 51 far away from the valve body 1 are integrally formed and communicated with the inner part of the cylinder 51, further, the outer peripheral surface of the first connecting pipe 52 is provided with a first connecting thread 521, and the inner peripheral surface of the first connecting pipe 52 is provided with a second connecting thread 522; the second connecting pipe 53 is a cylinder with a hollow inner part, the outer diameter of the second connecting pipe 53 is the same as the outer diameter of the first connecting pipe 52, one end of the second connecting pipe 53 is communicated with the adjusting cap 4, further, a third connecting thread 531 is arranged on the outer peripheral surface of the second connecting pipe 53, the thread rotating direction and the thread pitch of the third connecting thread 531 are the same as those of the first connecting thread 521, in addition, a rubber pad 7 is sleeved on the second connecting pipe 53, and the rubber pad 7 is abutted to the end surface of the adjusting cap 4, which is close to one end of the second connecting pipe 53; the third connecting pipe 54 is a cylinder with a hollow inner part, one end of the third connecting pipe 54 and one end of the second connecting pipe 53 far away from the adjusting cap 4 are integrally formed and communicated with the third connecting pipe 54, further, a fourth connecting thread 541 is arranged on the outer peripheral surface of the third connecting pipe 54, and the fourth connecting thread 541 is in threaded fit with the second connecting thread 522; the connection ring 55 has a ring shape, the inner circumferential surface of the connection ring 55 is formed with fifth connection threads 551, the fifth connection threads 551 are respectively in threaded connection with the first connection threads 521 and the third connection threads 531, and the length of the connection ring 55 is greater than that of the second connection pipe 53. When an operator needs to mount the adjusting cap 4 on the valve body 1, the fourth connecting thread 541 and the second connecting thread 522 are first screwed, the second connecting pipe 53 abuts against the first connecting pipe 52, and then the connecting ring 55 is rotated to seal the joint of the first connecting pipe 52 and the second connecting pipe 53 by the connecting ring 55, so that the sealing performance of the pressure valve is improved, and the occurrence of air leakage of the pressure valve is reduced.

As shown in fig. 2, the outer circumferential surface of the connection ring 55 is provided with a plurality of anti-slip grooves 552, which are uniformly arranged, the length direction of the anti-slip grooves 552 is consistent with the length direction of the connection ring 55, and the arrangement of the anti-slip grooves 552 increases the friction force of the circumferential surface of the connection ring 55, which is beneficial to reducing the possibility of sliding when an operator reuses the connection ring 55. Further, the outer peripheral face of go-between 55 one end is provided with the hexagonal limit 553 with go-between 55 integrated into one piece, and the diameter of hexagonal limit 553 inscribed circle is greater than the external diameter of go-between 55, and hexagonal limit 553 is located the one end of keeping away from adjusting cap 4, and operating personnel can utilize hexagonal spanner card on hexagonal limit 553 to rotate go-between 55, thereby be convenient for operating personnel to rotate go-between 55.

As shown in fig. 2 and 3, one end of the first connecting pipe 52, which is far away from the cylinder 51, is provided with a convex edge 523 integrally formed with the first connecting pipe 52, an outer circumferential surface of the convex edge 523 is coplanar with an outer circumferential surface of the first connecting pipe 52, an inner diameter of the convex edge 523 is larger than that of the first connecting pipe 52, further, a groove 524 is formed in an end surface of the first connecting pipe 52, which is far away from the cylinder 51, and a sealing ring 6 is arranged in the groove 524. The end surface of the second connecting pipe 53 far away from the adjusting cap 4 is provided with a convex ring 532, the convex ring 532 and the second connecting pipe 53 are integrally formed, the outer diameter of the convex ring 532 is smaller than the inner diameter of the convex edge 523, and the height of the convex ring 532 is equal to the height of the convex edge 523. When the second connection pipe 53 abuts against the first connection pipe 52, the convex ring 532 may abut against the end surface of the first connection pipe 52, and deform the sealing ring 6 in the groove 524, thereby facilitating further improvement of the sealing property between the first connection pipe 52 and the second connection pipe 53.

The specific working principle is that when an operator needs to install the adjusting cap 4 on the valve body 1, the third connecting pipe 54 at one end of the adjusting cap 4 is firstly screwed into the inner cavity of the first connecting pipe 52, and the end of the second connecting pipe 53 is abutted to the end of the first connecting pipe 52 through continuous screwing, at this time, the sealing ring 6 at the end of the first connecting pipe 52 plays a sealing role in advance, and the operator rotates the connecting ring 55 to enable the connecting ring 55 to rotate to the connection position of the first connecting pipe 52 and the second connecting pipe 53 through rotating the connecting ring 55, so that the connecting ring 55 can be used for sealing the connection position, the sealing performance of the pressure valve is improved, and the occurrence of air leakage of the pressure valve is reduced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a pressure valve for gas holder, includes valve body (1) with gas holder threaded connection, is located valve cap (2) at valve body (1) top, install in manometer (3) of valve body (1) one side and install in valve body (1) opposite side just is used for adjusting regulation cap (4) of manometer (3), its characterized in that: a connecting mechanism (5) is arranged between the adjusting cap (4) and the valve body (1), the connecting mechanism (5) comprises a cylinder (51) which is communicated with the valve body (1) and is integrally formed with the side wall of the valve body, a first connecting pipe (52) which is integrally formed with one end of the cylinder (51) far away from the valve body (1), a second connecting pipe (53) which is integrally formed with one end of the adjusting cap (4) close to the valve body (1), a third connecting pipe (54) which is integrally formed with one end of the second connecting pipe (53) far away from the adjusting cap (4), and a connecting ring (55) which is used for being connected with the first connecting pipe (52) and the second connecting pipe (53), a first connecting thread (521) is arranged on the outer peripheral surface of the first connecting pipe (52), a second connecting thread (522) is arranged on the inner peripheral surface of the first connecting pipe (52), the outer circumferential surface of the second connecting pipe (53) is provided with a third connecting thread (531), the outer circumferential surface of the third connecting pipe (54) is provided with a fourth connecting thread (541) in threaded connection with the second connecting thread (522), and the inner circumferential surface of the connecting ring (55) is provided with a fifth connecting thread (551) in threaded connection with the first connecting thread (521) and the third connecting thread (531).

2. A pressure valve for a gas storage tank as claimed in claim 1, wherein: one end of the first connecting pipe (52) far away from the cylinder (51) is provided with a convex edge (523) which is integrally formed with the first connecting pipe (52), the outer diameter of the convex edge (523) is consistent with that of the first connecting pipe (52), and the inner diameter of the convex edge (523) is larger than that of the first connecting pipe (52); the joint of the second connecting pipe (53) and the third connecting pipe (54) is provided with a convex ring (532) which is integrally formed with the second connecting pipe (53), and the end face of one end, away from the second connecting pipe (53), of the convex ring (532) is abutted against the end face of one end, away from the cylinder (51), of the first connecting pipe (52).

3. A pressure valve for a gas storage tank as claimed in claim 2, wherein: a sealing ring (6) is arranged in the convex edge (523), and the sealing ring (6) is abutted against the end face of one end, far away from the cylinder (51), of the first connecting pipe (52).

4. A pressure valve for a gas storage tank as claimed in claim 3, wherein: the end face of one end, far away from the cylinder (51), of the first connecting pipe (52) is provided with a groove (524), and the sealing ring (6) is located in the groove (524).

5. A pressure valve for a gas storage tank as claimed in claim 1, wherein: the length of the connection ring (55) is greater than that of the second connection pipe (53).

6. A pressure valve for a gas storage tank as claimed in claim 1, wherein: the outer wall of the connecting ring (55) is provided with an anti-skidding groove (552), and the length direction of the anti-skidding groove (552) is consistent with the length direction of the connecting ring (55).

7. A pressure valve for a gas storage tank as claimed in claim 6, wherein: the end part of one end of the connecting ring (55) is provided with a hexagonal edge (553) which is integrally formed with the connecting ring (55), and the diameter of an inscribed circle of the hexagonal edge (553) is equal to the outer diameter of the connecting ring (55).

8. A pressure valve for a gas storage tank as claimed in claim 1, wherein: a rubber pad (7) is sleeved on the second connecting pipe (53), and the rubber pad (7) is abutted to the end face, close to one end of the second connecting pipe (53), of the adjusting cap (4).