Liquefied petroleum gas steel cylinder with pressure reducing valve

Abstract

The utility model relates to a liquefied petroleum gas steel cylinder with a pressure reducing valve. Comprising a steel cylinder, a pressure reducing valve is installed at the upper end of the steel cylinder, the pressure reducing valve comprises a pressure reducing valve body, one end of the pressure reducing valve body is connected with a locking mechanism matched with a clamping hole to lock a first connecting cylinder, and a connecting mechanism used for limiting the locking mechanism is installed at one end of the locking mechanism. When a connecting mechanism and a second connecting pipe are disassembled, only a connecting ring needs to be pressed leftwards, a guide plate drives a positioning pin to be far away from a groove cavity of a clamping hole, the connecting mechanism can be pulled out, disassembly is completed, when the connecting ring is pressed leftwards, an insertion block drives the guide plate to synchronously move leftwards, and an arc-shaped elastic plate abuts against a trapezoidal check block; and one side of the second fixing plate is driven to be close to the outer wall of the connecting sleeve, the positioning pin is pulled, the positioning pin is made to fall off a hole cavity of the clamping hole, and locking of the positioning pin on the first connecting cylinder is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied petroleum gas cylinders, in particular to a liquefied petroleum gas cylinder with a pressure reducing valve. Background Art

[0002] The pressure reducing valve is an indispensable component in gas equipment. It is installed on the liquefied petroleum gas cylinder valve. Its main function is to reduce the pressure of the high-pressure liquefied petroleum gas in the cylinder from high pressure to medium and low pressure to ensure the pressure required for normal combustion of the gas appliance.

[0003] For example, a pressure reducing valve for pressure control of a liquefied petroleum gas cylinder disclosed in Chinese patent application number CN202320841662.6 has the following specific contents: a mounting block is fixedly mounted on the liquefied petroleum gas cylinder. During use, two limit posts are pressed, and the two limit posts squeeze two springs through two limit blocks respectively. At the same time, the two limit posts shrink into two movable grooves respectively, and then the two engaging blocks are respectively engaged in the two mounting grooves. The two limit posts are respectively popped out from the limit holes opened on the two connecting tubes under the elastic force of the springs. During the installation process, , the clamping tube with the No. 1 sealing ring is clamped into the clamping groove at the same time, so that the pressure reducing valve body is convenient to install with the liquefied petroleum gas cylinder, and it is also convenient to disassemble, replace or overhaul. After the pressure reducing valve body and the liquefied petroleum gas cylinder are installed, the inner wall of the hose is sleeved with the outer surface of the inner sleeve, so that the No. 2 sealing ring is tightly fitted with the inner wall of the hose, and one end of the hose is located in the gap between the inner sleeve and the outer sleeve. By rotating the screw, the end of the screw passes through the outer sleeve and fits tightly with the outer surface of the hose, so that the hose is convenient to connect with the pressure reducing valve body. It has the following technical problems:

[0004] After a period of use, the liquefied petroleum gas cylinder bottle needs to be inflated, so the pressure reducing valve often needs to be disassembled. When disassembling the pressure reducing valve, the two limit columns need to be pressed into the two movable grooves, and due to the obstruction of the thickness of the connecting tube wall, the two limit columns need to be pushed into the installation groove at the same time with the help of external tools, and the installation mechanism needs to be pulled in the direction away from the liquefied petroleum gas cylinder bottle before the pressure reducing valve can be disassembled. The operation is relatively cumbersome. Utility Model Content

[0005] In order to solve the problem that the disassembly operation of the pressure reducing valve is relatively complicated as mentioned in the above background technology, the utility model provides the following technical solutions:

[0006] A liquefied petroleum gas cylinder with a pressure reducing valve, comprising a cylinder;

[0007] A pressure reducing valve is installed on the upper end of the steel cylinder.

[0008] The steel cylinder comprises a steel cylinder body, a connecting pipe 1 is installed at the upper end of the steel cylinder body, and a connecting pipe 2 is installed at the middle of the connecting pipe 1.

[0009] A connecting tube 1 is installed at the right end of the connecting pipe 2, and a clamping hole for connecting the pressure reducing valve is provided on the outer wall of the connecting tube 1.

[0010] The pressure reducing valve comprises a pressure reducing valve body, one end of which is connected with a locking mechanism for locking a connecting tube in cooperation with a clamping hole, and one end of which is installed with a connecting mechanism for limiting the locking mechanism.

[0011] Furthermore, a sealing ring 2 is installed in the inner cavity of the connecting tube 1, and a sealing ring 1 is installed at the right end of the connecting tube 2.

[0012] Furthermore, an air outlet pipe is installed at the right end of the pressure reducing valve body, an air inlet pipe is installed at the left end of the pressure reducing valve body, and the air inlet pipe is connected to the connecting mechanism, and the locking mechanism is sleeved on the left side of the air inlet pipe.

[0013] Furthermore, the connecting mechanism includes a connecting sleeve, and the sealing ring 1 is located on the left side of the connecting sleeve, and a trapezoidal stopper is installed inside the connecting sleeve.

[0014] Furthermore, a second connecting sleeve is installed in the middle of the connecting sleeve, a sealing cover for cooperating with the connecting sleeve to limit the locking mechanism is installed on the right side of the connecting sleeve, and a plurality of bolts are installed on the edge of the sealing cover.

[0015] Furthermore, the locking mechanism comprises a connecting ring, and the connecting ring is sleeved on the left side of the air intake pipe, and a plurality of plug-ins for telescoping inside the connecting sleeve are installed on the left side of the connecting ring.

[0016] Furthermore, a limiting block 1 for limiting the position of the plug block is installed in the middle of the plug block, and a spring for cooperating with a connecting sleeve to limit the locking mechanism is sleeved on the left side of the plug block.

[0017] Furthermore, a guide plate is installed on the left side of the plug block, and the guide plate includes a fixed plate 1 fixedly connected to the plug block, and an arc-shaped elastic plate is installed on the left side of the fixed plate 1 for cooperating with the trapezoidal stopper to control the angle change of the guide plate, and one end of the arc-shaped elastic plate is connected to a fixed plate 2, a circular hole is opened on the left side of the fixed plate 2, and a slide groove is opened in the middle of the fixed plate 2, and the slide groove and the circular hole are connected.

[0018] Furthermore, a positioning pin is slidably connected in the groove cavity of the slide groove and is used to cooperate with the card hole to lock the connecting mechanism and the locking mechanism. The positioning pin includes a positioning block for telescoping in the hole cavity of the card hole, one end of the positioning block is connected to connecting rod 1, one end of the connecting rod 1 is connected to connecting rod 2, and connecting rod 2 slides in the groove cavity of the slide groove, one end of the connecting rod 2 is connected to limiting block 2, and the diameter of limiting block 2 is larger than the diameter of connecting rod 2.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] When disassembling the connecting mechanism and the connecting tube 2, it is only necessary to press the connecting ring to the left so that the guide plate drives the locating pin away from the groove of the card hole, and the connecting mechanism can be pulled out to complete the disassembly. When the connecting ring is pressed to the left, the insert block drives the guide plate to move to the left synchronously, and the arc-shaped elastic plate and the trapezoidal stopper collide with each other, driving one side of the fixed plate 2 to approach the outer wall of the connecting sleeve, and pulling the locating pin to make the locating pin fall off the hole of the card hole, thereby releasing the lock of the locating pin on the connecting tube 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the connection between the steel cylinder and the pressure reducing valve of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the steel cylinder of the utility model;

[0023] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0024] Figure 4 This is a schematic diagram of the structure of the pressure reducing valve of the utility model;

[0025] Figure 5 This is a schematic diagram of the connection of the connection mechanism, the locking mechanism and the second connection pipe of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the connection mechanism of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the locking mechanism of the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the positioning pin of the utility model;

[0029] Fig. 9 It is a structural schematic diagram of the guide plate of the utility model.

[0030] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0031] 001-steel cylinder;

[0032] 100- cylinder body, 110- connecting pipe 1, 120- connecting pipe 2, 130- sealing ring 1, 140- connecting tube 1, 141- clamping hole, 150- sealing ring 2;

[0033] 002-pressure reducing valve;

[0034] 200-pressure reducing valve body, 210-air outlet pipe, 220-air inlet pipe;

[0035] 300-connecting mechanism, 310-connecting sleeve, 311-trapezoidal stopper, 320-sealing cover, 321-bolt, 330-connecting cylinder II;

[0036] 400-locking mechanism, 410-connecting ring, 420-insertion block, 421-limiting block 1, 430-spring, 440-locating pin, 441-locating block, 442-connecting rod 1, 443-connecting rod 2, 444-limiting block 2, 450-guide plate, 451-fixing plate 1, 452-arc elastic plate, 453-fixing plate 2, 454-round hole, 455-slide groove. DETAILED DESCRIPTION

[0037] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0038] See also Figure 1-Figure 9 The utility model provides a liquefied petroleum gas cylinder with a pressure reducing valve.

[0039] The steel cylinder 001 includes a steel cylinder body 100 , a connecting pipe 110 is fixedly installed on the upper end of the steel cylinder body 100 , and a connecting pipe 2 120 is fixedly installed in the middle of the connecting pipe 110 .

[0040] A connecting tube 140 is fixedly installed on the right end of the connecting tube 120. A clamping hole 141 is opened on the outer wall of the connecting tube 140 for connecting the pressure reducing valve 002. A sealing ring 150 is placed in the inner cavity of the connecting tube 140 to prevent gas leakage. A sealing ring 130 is installed on the right end of the connecting tube 120 to further prevent gas leakage.

[0041] A pressure reducing valve 002 is installed at the upper end of the cylinder 001. The pressure reducing valve 002 includes a pressure reducing valve body 200, an air outlet pipe 210 is fixedly installed at the right end of the pressure reducing valve body 200, an air inlet pipe 220 is fixedly installed at the left end of the pressure reducing valve body 200, and the air inlet pipe 220 and the right end of the connecting mechanism 300 are fixedly connected to facilitate gas circulation, and the locking mechanism 400 is sleeved on the left side of the air inlet pipe 220.

[0042] The left end of the locking mechanism 400 is equipped with a connecting mechanism 300 for limiting the locking mechanism 400. The connecting mechanism 300 includes a connecting sleeve 310, and the sealing ring 130 is located on the left side of the connecting sleeve 310. When the connecting mechanism 300 is fixed on the right side of the connecting pipe 2 120, the side wall of the connecting sleeve 310 on the left side abuts against the sealing ring 130. A trapezoidal stopper 311 is installed inside the connecting sleeve 310, and a cavity a for placing the trapezoidal stopper 311 is opened inside the connecting sleeve 310. A connecting tube 2 330 is fixedly installed at the left end of the middle part of the connecting sleeve 310. The outer wall of the connecting tube 2 330 abuts against the sealing ring 2 150 to prevent gas leakage. A sealing cover 320 for cooperating with the connecting sleeve 310 to limit the locking mechanism 400 is installed on the right side of the connecting sleeve 310, and a plurality of bolts 321 are installed on the edge of the sealing cover 320.

[0043] One end of the pressure reducing valve body 200 is connected to a locking mechanism 400 that cooperates with the card hole 141 to lock the connecting sleeve 140. The locking mechanism 400 includes a connecting ring 410, and the connecting ring 410 is sleeved on the left side of the intake pipe 220. A plurality of plug blocks 420 for telescoping in the hole a inside the connecting sleeve 310 are installed on the left side of the connecting ring 410. A limit block 421 for limiting the plug block 420 is fixedly installed in the middle of the plug block 420. A spring 430 for cooperating with the connecting sleeve 310 to limit the locking mechanism 400 is sleeved on the left side of the plug block 420.

[0044] A positioning pin 440 is slidably connected in the groove cavity of the slide groove 455 for locking the connection mechanism 300 and the locking mechanism 400 in cooperation with the clamping hole 141. The positioning pin 440 includes a positioning block 441 for telescoping in the hole cavity of the clamping hole 141. The positioning block 441 is inserted into the hole cavity of the clamping hole 141 to lock the connection tube 140, so that the connection mechanism 300 and the connection tube 2 120 are firmly connected. A connecting rod 1 442 is fixedly connected to one end of the positioning block 441, and a connecting rod 2 443 is fixedly connected to one end of the connecting rod 1 442. The connecting rod 2 443 slides in the groove cavity of the slide groove 455. The diameter of the connecting rod 2 443 is smaller than the diameter of the connecting rod 1 442. One end of the connecting rod 2 443 is fixedly connected to a limiting block 2 444, and the diameter of the limiting block 2 444 is larger than the diameter of the connecting rod 2 443. When the positioning pin 440 is installed on the guide plate 450, the second limiting block 444 is passed through the groove of the circular hole 454, so that the second connecting rod 443 is in the groove of the circular hole 454, and then the connecting ring 410 is pushed to the left to slide the second connecting rod 443 to the groove of the sliding groove 455. The sealing cover 320 is fixed to the right side of the connecting sleeve 310 by the bolt 321 to complete the limiting of the locking mechanism 400.

[0045] A guide plate 450 is fixedly installed on the left side of the plug block 420, and the guide plate 450 includes a fixing plate 1 451 fixedly connected to the plug block 420, and an arc-shaped elastic plate 452 is fixedly installed on the left side of the fixing plate 1 451 for cooperating with the trapezoidal stopper 311 to control the angle change of the guide plate 450, and one end of the arc-shaped elastic plate 452 is fixedly connected to a fixing plate 2 453, and the fixing plate 2 453 is a Z-shaped plate body, and a circular hole 454 is provided on the left side of the fixing plate 2 453 for facilitating the installation of the positioning pin 440, and a slide groove 455 is provided in the middle of the fixing plate 2 453 for limiting the positioning pin 440, and the groove width of the slide groove 455 is smaller than the diameter of the connecting rod 1 442 and the limiting block 2 444, and the slide groove 455 and the circular hole 454 are connected.

[0046] When the cylinder 001 and the pressure reducing valve 002 are docked and installed, the positioning pin 440 and the guide plate 450 are first assembled, and then the locking mechanism 400 is limited to the right side of the connecting sleeve 310 through the sealing cover 320, and then the connecting tube 1 140 and the connecting tube 2 330 are aligned, and the connecting tube 2 120 and the connecting sleeve 310 are connected. At the same time, the connecting ring 410 is pushed to the left, so that the connecting ring 410 drives the plug block 420 and the guide plate 450 to move to the left, so that the fixing plate 2 453 and the trapezoidal stopper 311 collide with each other, drive the arc elastic plate 452 to deform, and make the left side of the fixing plate 2 453 The end moves toward the outer wall of the connecting sleeve 310. Since the slide groove 455 cooperates with the limit block 444 to limit the positioning pin 440, the fixed plate 453 simultaneously pulls the positioning pin 440 to make the positioning pin 440 move toward the direction of the internal groove cavity a of the connecting sleeve 310. When one side of the positioning block 441 is on the outer wall of the connecting tube 1 140, there is no need to push the connecting ring 410. The connecting sleeve 310 can be held by hand to move the connecting mechanism 300 toward the direction of the connecting tube 120. Finally, when the positioning block 441 is inserted into the hole of the card hole 141, the splicing of the connecting mechanism 300 and the connecting tube 120 is completed.

[0047] When disassembling the connection mechanism 300 and the second connection tube 120, the connection ring 410 only needs to be pressed to the left, so that the guide plate 450 drives the positioning pin 440 away from the groove of the clamping hole 141, and the connection mechanism 300 can be pulled out to complete the disassembly. When the connection ring 410 is pressed to the left, the plug block 420 drives the guide plate 450 to move to the left synchronously, and the arc-shaped elastic plate 452 and the trapezoidal stopper 311 come into contact, driving one side of the second fixing plate 453 to approach the outer wall of the connection sleeve 310, and pulling the positioning pin 440, so that the positioning pin 440 falls off the hole of the clamping hole 141, and releasing the locking of the positioning pin 440 on the first connection tube 140.

[0048] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A liquefied petroleum gas cylinder with a pressure reducing valve, comprising a cylinder (001), characterized in that: A pressure reducing valve (002) is installed at the upper end of the steel cylinder (001); The steel cylinder (001) comprises a steel cylinder body (100), a connecting pipe 1 (110) is installed at the upper end of the steel cylinder body (100), and a connecting pipe 2 (120) is installed at the middle of the connecting pipe 1 (110); A connecting tube 1 (140) is installed at the right end of the connecting tube 2 (120), and a clamping hole (141) is provided on the outer wall of the connecting tube 1 (140) for facilitating connection with the pressure reducing valve (002); The pressure reducing valve (002) comprises a pressure reducing valve body (200), one end of the pressure reducing valve body (200) being connected to a locking mechanism (400) for matching with a clamping hole (141) to lock a connecting tube (140), and one end of the locking mechanism (400) being installed with a connecting mechanism (300) for limiting the locking mechanism (400).

2. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 1, characterized in that: The inner cavity of the connecting tube 1 (140) is installed with a sealing ring 2 (150), and the right end of the connecting tube 2 (120) is installed with a sealing ring 1 (130).

3. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 2, characterized in that: An air outlet pipe (210) is installed at the right end of the pressure reducing valve body (200), an air inlet pipe (220) is installed at the left end of the pressure reducing valve body (200), and the air inlet pipe (220) is connected to the connecting mechanism (300), and the locking mechanism (400) is sleeved on the left side of the air inlet pipe (220).

4. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 3, characterized in that: The connection mechanism (300) comprises a connection sleeve (310), and the sealing ring 1 (130) is located on the left side of the connection sleeve (310). A trapezoidal stopper (311) is installed inside the connection sleeve (310).

5. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 4, characterized in that: A second connecting sleeve (330) is installed in the middle of the connecting sleeve (310), a sealing cover (320) for cooperating with the connecting sleeve (310) to limit the locking mechanism (400) is installed on the right side of the connecting sleeve (310), and a plurality of bolts (321) are installed on the edge of the sealing cover (320).

6. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 4, characterized in that: The locking mechanism (400) comprises a connecting ring (410), and the connecting ring (410) is sleeved on the left side of the air intake pipe (220), and a plurality of plug blocks (420) for telescoping inside the connecting sleeve (310) are installed on the left side of the connecting ring (410).

7. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 6, characterized in that: A limiting block 1 (421) for limiting the position of the insert block (420) is installed in the middle of the insert block (420), and a spring (430) for cooperating with the connecting sleeve (310) to limit the position of the locking mechanism (400) is sleeved on the left side of the insert block (420).

8. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 6, characterized in that: A guide plate (450) is installed on the left side of the plug block (420), and the guide plate (450) includes a fixing plate 1 (451) fixedly connected to the plug block (420), and an arc-shaped elastic plate (452) is installed on the left side of the fixing plate 1 (451) for cooperating with the trapezoidal stopper (311) to control the angle change of the guide plate (450), and one end of the arc-shaped elastic plate (452) is connected to a fixing plate 2 (453), and a circular hole (454) is opened on the left side of the fixing plate 2 (453), and a sliding groove (455) is opened in the middle of the fixing plate 2 (453), and the sliding groove (455) and the circular hole (454) are connected.

9. The liquefied petroleum gas cylinder with a pressure reducing valve according to claim 8, characterized in that: A positioning pin (440) is slidably connected in the groove cavity of the slide groove (455) for cooperating with the clamping hole (141) to lock the connecting mechanism (300) and the locking mechanism (400). The positioning pin (440) includes a positioning block (441) for telescoping in the hole cavity of the clamping hole (141). One end of the positioning block (441) is connected to a connecting rod 1 (442). One end of the connecting rod 1 (442) is connected to a connecting rod 2 (443). The connecting rod 2 (443) slides in the groove cavity of the slide groove (455). One end of the connecting rod 2 (443) is connected to a limiting block 2 (444). The diameter of the limiting block 2 (444) is greater than the diameter of the connecting rod 2 (443).

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