阅读说明：本技术 一种液化气罐安全阀 (Safety valve for liquefied gas cylinder ) 是由 王彦 于 2021-09-29 设计创作，主要内容包括：本发明提供一种液化气罐安全阀,包括主体；接头；封闭机构；连接机构,连接机构与主体螺纹连接；阻挡机构,阻挡机构连接主体的顶端,阻挡机构包括凸块、齿轮、支撑杆、档杆、限位杆和转杆,主体的顶面安装限位杆,限位杆的内部滑动连接的内部滑动连接支撑杆,支撑杆的两端分别固定连接齿轮；限位杆的一端与转杆之间螺纹连接,转杆的一端卡合且转动连接档杆,档杆卡合限位杆内部的齿轮；连接机构的内部等距安装凸块,凸块啮合支撑杆顶端的齿轮；固定机构。本发明提供的液化气罐安全阀具有防误开、增加使用安全性的优点。(The invention provides a liquefied gas tank safety valve, which comprises a main body; a joint; a sealing mechanism; the connecting mechanism is in threaded connection with the main body; the blocking mechanism is connected with the top end of the main body and comprises a lug, a gear, a support rod, a stop rod, a limiting rod and a rotating rod, the limiting rod is installed on the top surface of the main body, the inner part of the limiting rod in sliding connection is in sliding connection with the support rod, and the two ends of the support rod are respectively fixedly connected with the gear; one end of the limiting rod is in threaded connection with the rotating rod, one end of the rotating rod is clamped and rotatably connected with the blocking rod, and the blocking rod is clamped with a gear inside the limiting rod; the inner part of the connecting mechanism is provided with lugs at equal intervals, and the lugs are meshed with the gear at the top end of the supporting rod; and a fixing mechanism. The safety valve of the liquefied gas tank has the advantages of preventing false opening and improving the use safety.)

1. A safety valve for a liquefied gas tank, comprising:

a main body (1);

the joint (2), the said joint (2) is mounted to the sidewall of the said body (1);

a closure mechanism (4), the closure mechanism (4) being fixed inside the body (1);

the connecting mechanism (3) is in threaded connection with the main body (1), and the connecting mechanism (3) is connected with the closing mechanism (4);

the blocking mechanism (5) is connected with the top end of the main body (1), the blocking mechanism (5) comprises a convex block (51), a gear (52), a support rod (53), a stop rod (54), a limiting rod (55) and a rotating rod (56), the limiting rod (55) is installed on the top surface of the main body (1), the support rod (53) is connected with the inner portion of the limiting rod (55) in a sliding mode, two ends of the support rod (53) are respectively and fixedly connected with the gear (52), one end of the limiting rod (55) is in threaded connection with the rotating rod (56), one end of the rotating rod (56) is clamped and rotatably connected with the stop rod (54), and the stop rod (54) is clamped with the gear (52) in the limiting rod (55); the lugs (51) are arranged in the connecting mechanism (3) at equal intervals, and the lugs (51) are engaged with the gear (52) at the top end of the supporting rod (53);

the fixing mechanism (6), the said fixing mechanism (6) is mounted to the junction of the said gear (52) and said coupling mechanism (3);

the main body (1) comprises a cylinder body (11), a fixing ring (12), a first fixing funnel (13) and a first piston (14), the joint (2) is respectively installed at the bottom end and the side wall of the cylinder body (11), the first fixing funnel (13) is installed inside the cylinder body (11), the fixing ring (12) and the first piston (14) are connected and clamped in a sliding mode inside the first fixing funnel (13), and the fixing ring (12) is installed on the side wall of the first piston (14) at equal intervals;

the top end of the first fixed funnel (13) abuts against the joint (2) of the side wall of the cylinder body (11), and the minimum inner diameter of the first fixed funnel (13) is equal to the diameter of the first piston (14) and the fixed ring (12).

2. The safety valve of claim 1, wherein the closing mechanism (4) comprises a second fixed funnel (41), a second piston (42) and a rubber ring (43), the second fixed funnel (41) is installed inside the top end of the cylinder (11), the second piston (42) is slidably connected inside the second fixed funnel (41), the rubber ring (43) is fixedly connected to both ends of the second piston (42), the second piston (42) is fixedly connected to the first piston (14), and the rubber ring (43) is slidably connected inside the cylinder (11).

3. The safety valve for liquefied gas tank according to claim 2, wherein the connection mechanism (3) comprises a knob (31) and a screw (32), the screw (32) is installed at the top end of the rubber ring (43), the screw (32) is in threaded connection with the cylinder (11), and the top end of the screw (32) is fixedly connected with the knob (31).

4. The safety valve of liquefied gas tank as claimed in claim 3, wherein the fixing mechanism (6) comprises a fixing groove (61) and a fixing rod (62), the fixing groove (61) of the ring shape is installed inside the knob (31), the fixing rod (62) of which the top end is spherical is slidably connected inside the fixing groove (61), and the fixing rod (62) is fixedly connected with the gear (52) of the top end of the supporting rod (53).

5. The safety valve of claim 3, wherein the protrusions (51) are equidistantly installed inside the knob (31), and the gear (52) and the stopper rod (54) at the bottom end of the support rod (53) are slidably connected to the inside of the stopper rod (55).

Technical Field

The invention relates to the technical field of industrial equipment, in particular to a safety valve of a liquefied gas tank.

Background

The safety valve is a special valve which is in a normally closed state under the action of external force, when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of a system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value, the safety valve belongs to the automatic valve class, is mainly used for boilers, pressure containers and pipelines, the control pressure does not exceed the specified value, the safety valve plays an important role in protecting personal safety and equipment operation, and the safety valve can be used only through a pressure test.

When using liquefied gas storage tank at home, the relief valve is in the encapsulated situation when not using, but the child of family relatively transfers the skin, opens liquefied gas storage tank's relief valve sometimes by accident, makes coal gas leakage, causes the incident.

Disclosure of Invention

The invention aims to provide a safety valve of a liquefied gas tank, which can prevent mistaken opening and improve the use safety.

In order to solve the above technical problem, the present invention provides a safety valve for a liquefied gas tank, comprising: a main body; a joint mounted to a sidewall of the body; a closure mechanism secured within the interior of the body; the connecting mechanism is in threaded connection with the main body and is connected with the closing mechanism; the blocking mechanism is connected with the top end of the main body and comprises a lug, a gear, a support rod, a stop rod, a limiting rod and a rotating rod, the limiting rod is installed on the top surface of the main body, the inner part of the limiting rod in sliding connection is in sliding connection with the support rod, and two ends of the support rod are respectively fixedly connected with the gear; one end of the limiting rod is in threaded connection with the rotating rod, one end of the rotating rod is clamped and rotationally connected with the blocking rod, and the blocking rod is clamped with the gear inside the limiting rod; the lugs are arranged in the connecting mechanism at equal intervals and are meshed with the gears at the top ends of the supporting rods; and the fixing mechanism is arranged at the joint of the gear and the connecting mechanism.

The main part includes barrel, solid fixed ring, first fixed funnel and first piston, the bottom and the lateral wall of barrel are installed respectively the joint, the internally mounted of barrel first fixed funnel, the inside sliding connection and the block of first fixed funnel gu fixed ring with first piston, the lateral wall equidistance of first piston is installed solid fixed ring.

The top of first fixed funnel contradicts the barrel lateral wall the joint, just the minimum internal diameter of first fixed funnel equals first piston with gu fixed ring's diameter.

The sealing mechanism comprises a second fixing funnel, a second piston and a rubber ring, the top end of the cylinder is internally installed with the second fixing funnel, the second piston is connected with the second fixing funnel in a sliding mode, two ends of the second piston are respectively fixedly connected with the rubber ring, the second piston is connected with the first piston in a fixed mode, and the rubber ring is connected with the inside of the cylinder in a sliding mode.

The connecting mechanism comprises a knob and a screw rod, the screw rod is installed at the top end of the rubber ring, the screw rod is in threaded connection with the barrel, and the top end of the screw rod is fixedly connected with the knob.

The fixing mechanism comprises a fixing groove and a fixing rod, the inside of the knob is provided with an annular fixing groove, the top end of the inside sliding connection of the fixing groove is spherical, and the fixing rod is fixedly connected with the gear on the top end of the supporting rod.

The inside equidistance installation of knob the lug, the inside sliding connection of gag lever post the bracing piece bottom the gear with the shelves pole.

The invention provides a safety valve of a liquefied gas tank, when the main body needs to be opened, a rotating rod is rotated, the rotating rod moves in the limiting rod and a blocking rod, so that the blocking rod moves in the limiting rod and is separated from a gear in the limiting rod, a connecting mechanism is rotated, the connecting mechanism drives a lug to rotate, the lug drives the gear at the top end of a supporting rod to rotate, the gear drives the supporting rod and another gear to rotate in the limiting rod, so that the connecting mechanism rotates to open the interior of the main body, when the connecting mechanism is rotated to seal the main body, the rotating rod is rotated reversely, so that the rotating rod pushes the blocking rod to move in the interior of the limiting rod, the blocking rod is clamped with the gear in the limiting rod, and the gear is fixed, prevent gear revolve with the bracing piece rotates, the bracing piece top the gear meshes all the time inside coupling mechanism the lug, the gear is fixed, prevents the lug rotates, thereby makes coupling mechanism is fixed can not take place to rotate, avoids child to open by mistake the main part improves the security of using.

Drawings

FIG. 1 is a schematic structural view of a relief valve of a liquefied gas tank according to the present invention;

FIG. 2 is a schematic view of the internal structure of the main body shown in FIG. 1;

FIG. 3 is an enlarged view of the structure at A shown in FIG. 2;

fig. 4 is a top view of the internal structure of the knob shown in fig. 2.

Reference numbers in the figures: 1. the main part, 11, the barrel, 12, solid fixed ring, 13, first fixed funnel, 14, first piston, 2, connect, 3, coupling mechanism, 31, knob, 32, screw rod, 4, closing mechanism, 41, the fixed funnel of second, 42, the second piston, 43, rubber ring, 5, stop mechanism, 51, the lug, 52, the gear, 53, the bracing piece, 54, the shelves pole, 55, the gag lever post, 56, the bull stick, 6, fixed establishment, 61, the fixed slot, 62, the dead lever.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1-4, a safety valve for a liquid gas storage tank according to an embodiment of the present invention includes: a main body 1; the joint 2 is mounted on the side wall of the main body 1; a closing mechanism 4, wherein the closing mechanism 4 is fixed inside the main body 1; the connecting mechanism 3 is in threaded connection with the main body 1, and the connecting mechanism 3 is connected with the closing mechanism 4; the blocking mechanism 5 is connected with the top end of the main body 1, the blocking mechanism 5 comprises a convex block 51, a gear 52, a support rod 53, a stop rod 54, a limiting rod 55 and a rotating rod 56, the limiting rod 55 is installed on the top surface of the main body 1, the interior of the limiting rod 55 in sliding connection is in sliding connection with the support rod 53, and two ends of the support rod 53 are respectively fixedly connected with the gear 52; one end of the limit rod 55 is in threaded connection with the rotating rod 56, one end of the rotating rod 56 is clamped and rotationally connected with the gear lever 54, and the gear lever 54 is clamped with the gear 52 in the limit rod 55; the lugs 51 are arranged in the connecting mechanism 3 at equal intervals, and the lugs 51 are engaged with the gears 52 at the top ends of the support rods 53; and the fixing mechanism 6 is arranged at the joint of the gear 52 and the connecting mechanism 3.

The main body 1 comprises a cylinder body 11, a fixing ring 12, a first fixing funnel 13 and a first piston 14, the bottom end and the side wall of the cylinder body 11 are respectively provided with the joint 2, the first fixing funnel 13 is arranged inside the cylinder body 11, the first fixing funnel 13 is connected inside in a sliding manner and is clamped with the fixing ring 12 and the first piston 14, the fixing ring 12 is arranged on the side wall of the first piston 14 at equal intervals, the joint 2 at the bottom end of the main body 1 is connected with a liquefied gas tank, the cylinder body 11 is fixed above the liquefied gas tank, the first piston 14 and the fixing ring 12 are rotated to enter the first fixing funnel 13, the fixing ring 12 is in contact with the inner side wall of the first fixing funnel 13, the friction force between the first piston 14 and the first fixing funnel 13 is reduced, and the first piston 14 is convenient to enter the first fixing funnel 13, the fixing ring 12 is tightly attached to the first fixing funnel 13 to seal the first fixing funnel 13, so that gas leakage in the liquefied gas tank is prevented.

The top end of the first fixing funnel 13 abuts against the joint 2 on the side wall of the cylinder body 11, so that the first fixing funnel 13 is opened conveniently, gas inside the liquefied gas tank is discharged from the joint 2 on the side wall of the cylinder body 11 after penetrating through the first fixing funnel 13, the minimum inner diameter of the first fixing funnel 13 is equal to the diameter of the first piston 14 and the diameter of the fixing ring 12, and the first fixing funnel 13 is closed by the first piston 14 and the fixing ring 12 conveniently.

The closing mechanism 4 comprises a second fixed funnel 41, a second piston 42 and a rubber ring 43, the second fixed funnel 41 is installed inside the top end of the cylinder 11, the second fixed funnel 41 is slidably connected inside the second piston 42, two ends of the second piston 42 are respectively fixedly connected with the rubber ring 43, the second piston 42 is fixedly connected with the first piston 14, the rubber ring 43 is slidably connected inside the cylinder 11, after the first fixed funnel 13 is opened, the second piston 42 seals the inside of the second fixed funnel 41, the rubber ring 43 at the bottom end of the second piston 42 is tightly attached to the bottom surface of the second fixed funnel 41, the sealing performance at the bottom end of the second fixed funnel 41 is improved, and the rubber ring 43 at the top end of the second piston 42 is tightly attached to the inner side wall of the cylinder 11, thereby increasing the sealing performance of the inside of the top end of the cylinder body 11 and preventing the gas from leaking from the top end of the cylinder body 11.

The connecting mechanism 3 comprises a knob 31 and a screw rod 32, the top end of the rubber ring 43 is mounted on the screw rod 32, the screw rod 32 is in threaded connection with the cylinder 11, the top end of the screw rod 32 is fixedly connected with the knob 31, the knob 31 is rotated to drive the screw rod 32 to rotate inside the cylinder 11, and the screw rod 32 rotates to drive the first piston 14 and the second piston 42 to move to control the switch of the first fixed hopper 13.

The fixing mechanism 6 comprises a fixing groove 61 and a fixing rod 62, the fixing groove 61 is annularly arranged inside the knob 31, the fixing rod 62 is spherical at the top end of the sliding connection inside the fixing groove 61, the fixing rod 62 is fixedly connected with the gear 52 at the top end of the supporting rod 53, the fixing groove 61 is fixed on the fixing rod 62, so that the top end of the fixing rod 62 is fixed inside the knob 31, in the rotating process of the knob 31, the fixing groove 61 moves in a circular motion mode, the limiting rod 55 is fixed on the supporting rod 53 and the fixing rod 62, the knob 31 drives the supporting rod 53 and the fixing rod 62 to move vertically, and the gear 52 at the top end of the supporting rod 53 is meshed with the projection 51 all the time.

The lug 51 is installed to the inside equidistance of knob 31, the inside sliding connection of gag lever post 55 the gear 52 of bracing piece 53 bottom with shelves pole 54, for the convenience the shelves pole 54 is in the inside slip of gear 52 makes shelves pole 54 motion block the inside gear 52 of gag lever post 55, will gear 52 is fixed, prevents that gear 52 rotates.

The working principle of the safety valve of the liquefied gas tank provided by the invention is as follows:

when the main body 1 needs to be opened, the rotating rod 56 is rotated, the rotating rod 56 moves in the limiting rod 55 and the blocking rod 54, so that the blocking rod 55 moves in the limiting rod 55 and is separated from the gear 52 in the limiting rod 55, the knob 31 is rotated, the screw 32 rotates upwards from the inside of the barrel 11, the knob 31 drives the fixing groove 61 to do circular motion, the limiting rod 55 fixes the supporting rod 53 and the fixing rod 62, the knob 31 drives the supporting rod 53 and the fixing rod 62 to move vertically upwards, the knob 31 drives the fixing rod 62 to move upwards, the supporting rod 53 and one gear 52 move upwards in the limiting rod 55, the gear 52 at the top end of the supporting rod 53 is always engaged with the bump 51, and at this time, the bump 51 rotates along with the knob 31, the convex block 51 drives the gear 52 at the top end of the support rod 53 to rotate, and the gear 52 drives the support rod 53 and the gear 52 at the bottom end of the support rod 53 to rotate inside the limit rod 55; the screw 32 drives the first piston 14 and the second piston 42 to rotate upwards, the fixing ring 12 contacts with the inner side wall of the first fixing funnel 13, so as to reduce the friction force between the first piston 14 and the first fixing funnel 13, facilitate the first piston 14 to slide out from the inside of the first fixing funnel 13, open the first fixing funnel 13, enable the gas in the liquefied gas tank to penetrate through the first fixing funnel 13 and be discharged from the joint 2 on the side wall of the cylinder body 11, at this time, the second piston 42 seals the inside of the second fixing funnel 41, the rubber ring 43 at the bottom end of the second piston 42 is tightly attached to the bottom surface of the second fixing funnel 41, so as to increase the sealing performance at the bottom end of the second fixing funnel 41, and the rubber gasket 43 at the top end of the second piston 42 is tightly attached to the inner side wall of the cylinder body 11, so as to increase the sealing performance inside the top end of the cylinder body 11, gas is prevented from leaking from the top end of the cylinder 11. When the cylinder 11 needs to be sealed, the knob 31 is rotated to enable the screw rod 32 to rotate downwards, so that the screw rod 32 drives the first piston 14 and the second piston 42 to move downwards, and the first piston 14 and the fixing ring 12 enter the first fixing funnel 13 to seal the first fixing funnel 13. The rotating rod 56 is rotated to enable the rotating rod 56 to push the blocking rod 54 to move in the limiting rod 55, the blocking rod 54 is clamped with the gear 52 in the limiting rod 55 to fix the gear 52, the gear 52 is prevented from rotating and the supporting rod 53 is prevented from rotating, the gear 52 at the top end of the supporting rod 53 is always meshed with the lug 51 in the knob 31, the gear 52 is fixed to prevent the lug 51 from rotating, so that the knob 31 is fixed and cannot rotate, the barrel 11 is prevented from being opened by children by mistake, and the use safety is improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.