A liquefied petroleum gas cylinder valve seat

Abstract

The utility model discloses a liquefied petroleum gas cylinder valve seat, and the utility model relates to the technical field of liquefied petroleum gas. The liquefied petroleum gas cylinder valve seat comprises a positioning ring, the bottom of the positioning ring is connected with a threaded tube, the lower surface of the positioning ring is provided with an annular groove, the inner top wall of the annular groove is fixedly installed with a shock-absorbing spring, the bottom of the shock-absorbing spring is fixedly connected through a concave ring, a buffer ring is provided on the surface of the threaded tube and below the positioning ring, and a cavity is provided inside the buffer ring. The utility model connects the threaded tube on the positioning ring with the cylinder, and then during the fixing process, one side of the concave ring contacts the bottle mouth of the bottle body and is squeezed, and then the shock-absorbing spring squeezes one side of the concave ring, so as to facilitate the subsequent positioning operation during use, increase its sealing, and facilitate the positioning and installation operation during use, facilitate subsequent use, and improve the use efficiency of the valve seat.

Description

Technical Field

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

[0002] Liquefied petroleum gas is a colorless volatile liquid obtained by pressurizing and cooling natural gas or petroleum in an oil refinery. It is very easy to self-ignite. When its content in the air reaches a certain concentration range, it can explode when it encounters an open flame. The main components of the liquefied petroleum gas obtained from the refinery are one or two of propane, propylene, butane, and butene, and it is also mixed with a small amount of pentane, pentene and trace sulfide impurities. If the liquefied petroleum gas is to be further purified, an alcohol amine absorption tower can be used to absorb and remove the carbon oxysulfide therein, and finally the excess sulfide is washed away with alkali. The existing patent is a valve seat for a vehicle-mounted liquefied petroleum gas cylinder, patent announcement number CN203068134U, which includes a valve seat body, characterized in that: a "saddle-shaped" arc boss is provided on the outer periphery of the lower end of the valve seat body, and the upper surface of the arc boss coincides with the arc surface of the inner periphery of the cylinder seal. The utility model has a boss which matches the arc surface of the inner circumference of the cylinder seal, and can conveniently use the semi-arc groove under the valve seat to fix it on the welding workbench, so as to reliably position the valve seat; in addition, the existence of the "saddle-shaped" boss makes it possible to adopt single-sided welding, which reduces the trouble of double-sided welding. Due to the accurate positioning, it is also convenient to adopt an automated welding method, so that the welding quality is further improved.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: in actual application, it is inconvenient to perform positioning and sealing operations on them, which affects the subsequent normal use, reduces the utilization efficiency of the valve seat, and reduces the convenience of using the valve seat. Therefore, we propose a liquefied petroleum gas cylinder valve seat to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a liquefied petroleum gas cylinder valve seat, which solves the problem of inconvenience in installing and sealing the valve seat.

[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a liquefied petroleum gas cylinder valve seat, including a positioning ring, the bottom of the positioning ring is connected to a threaded pipe, the lower surface of the positioning ring is provided with an annular groove, the inner top wall of the annular groove is fixedly installed with a shock-absorbing spring, and the bottom of the shock-absorbing spring is fixedly connected by a concave ring.

[0006] A buffer ring is provided on the surface of the threaded tube and below the positioning ring, a cavity is opened inside the buffer ring, a buffer sheet is fixedly connected to one side of the inner wall of the cavity, a shock-absorbing ring is fixedly installed on one side of the buffer sheet, an insertion rod is fixedly installed on one side of the shock-absorbing ring, a movable ring is inserted on the surface of the insertion rod, one side of the movable ring is fixedly connected to one side of the buffer ring, and a return spring is arranged around the surface of the insertion rod.

[0007] Preferably, a sealing ring is fixedly mounted on the upper surface of the positioning ring, the upper surface of the sealing ring is provided with anti-slip grooves, and the sealing ring is made of silicone.

[0008] Preferably, the surface of the concave ring contacts the inner wall of the annular groove, and the inner wall of the concave ring is slidably connected to the other side of the inner wall of the annular groove.

[0009] Preferably, one end of the return spring is fixedly connected to one side of the moving ring, and the other end of the return spring is fixedly connected to one side of the shock absorbing ring.

[0010] Preferably, the movable ring is provided with a plug hole for the insertion rod to pass through, and the inner wall of the plug hole is slidably connected to the surface of the insertion rod.

[0011] Preferably, one end of the insertion rod is plugged into one side of the positioning ring, and the positioning ring is provided with an insertion hole for the insertion of the insertion rod, and the inner wall of the insertion hole is slidably connected to the surface of the insertion rod.

[0012] Preferably, the lower surface of the concave ring is provided with anti-slip grooves, and the concave ring is made of rubber, and the bottom of the concave ring is higher than the bottom of the positioning ring.

[0013] Beneficial Effects

[0014] The utility model provides a liquefied petroleum gas cylinder valve seat. Compared with the prior art, it has the following beneficial effects:

[0015] The liquefied petroleum gas cylinder valve seat is connected to the cylinder by a threaded tube on a positioning ring. Subsequently, during a fixing process, one side of the concave ring contacts with a bottle mouth of a bottle body to be squeezed. Subsequently, a shock-absorbing spring squeezes one side of the concave ring, thereby facilitating subsequent positioning operations during use and increasing its sealing performance. Subsequently, during use, it is convenient to perform positioning and installation operations, thereby facilitating subsequent use and improving the use efficiency of the valve seat.

[0016] At the same time, during the installation process, the plug rod is inserted into the positioning ring. When the plug rod is squeezed during installation, the plug rod squeezes the buffer ring, and then the buffer plate performs a buffering operation on it. At the same time, the reset spring resets the shock-absorbing ring, so as to facilitate the subsequent resetting operation of the components during use, thereby facilitating subsequent use, thereby improving the use efficiency of the valve seat and facilitating subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the positioning ring of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer ring of the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the buffer ring of the utility model.

[0022] In the figure: 1. positioning ring; 2. threaded tube; 3. shock-absorbing spring; 4. concave ring; 5. buffer ring; 6. buffer plate; 7. shock-absorbing ring; 8. plug rod; 9. moving ring; 10. reset spring; 11. sealing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: a liquefied petroleum gas cylinder valve seat, including a positioning ring 1, the bottom of the positioning ring 1 is connected with a threaded pipe 2, the lower surface of the positioning ring 1 is provided with an annular groove, the inner top wall of the annular groove is fixedly installed with a shock-absorbing spring 3, and the bottom of the shock-absorbing spring 3 is fixedly connected by a concave ring 4.

[0025] The threaded tube 2 on the positioning ring 1 is connected to the steel cylinder, and then during the fixing process, one side of the concave ring 4 contacts the bottle mouth of the bottle body and is squeezed, and then the shock-absorbing spring 3 squeezes one side of the concave ring 4, so as to facilitate the subsequent positioning operation during use and increase its sealing. In the subsequent use, it is convenient to position and install it, so as to facilitate subsequent use and improve the use efficiency of the valve seat.

[0026] A buffer ring 5 is provided on the surface of the threaded tube 2 and below the positioning ring 1. A cavity is opened inside the buffer ring 5. A buffer sheet 6 is fixedly connected to one side of the inner wall of the cavity. A shock-absorbing ring 7 is fixedly installed on one side of the buffer sheet 6. A plug rod 8 is fixedly installed on one side of the shock-absorbing ring 7. A movable ring 9 is inserted on the surface of the plug rod 8. One side of the movable ring 9 is fixedly connected to one side of the buffer ring 5. A return spring 10 is arranged around the surface of the plug rod 8.

[0027] The plug rod 8 is inserted into the positioning ring 1. When the plug rod 8 is squeezed during installation, the plug rod 8 squeezes the shock-absorbing ring 7, and then the buffer plate 6 performs a buffering operation on it. At the same time, the reset spring 10 resets the buffer ring 5, so as to facilitate the subsequent resetting operation of the components during use, thereby facilitating subsequent use, thereby improving the use efficiency of the valve seat and facilitating subsequent operations.

[0028] See also Figure 1 A sealing ring 11 is fixedly mounted on the upper surface of the positioning ring 1. The upper surface of the sealing ring 11 is provided with anti-slip grooves, and the sealing ring 11 is made of silicone.

[0029] The provision of the sealing ring 11 achieves the effect of increasing the sealing performance, thereby facilitating subsequent use and improving the use efficiency of the valve seat.

[0030] See also Figure 2 , Figure 3 The surface of the concave ring 4 contacts the inner wall of the annular groove, and the inner wall of the concave ring 4 is slidably connected to the other side of the inner wall of the annular groove.

[0031] The concave ring 4 is provided to facilitate positioning operation during use, thereby facilitating subsequent connection and sealing operations and improving the use efficiency of the valve seat.

[0032] See also Figure 5 One end of the return spring 10 is fixedly connected to one side of the moving ring 9 , and the other end of the return spring 10 is fixedly connected to one side of the damping ring 7 .

[0033] The reset spring 10 is fixedly connected to one end of the movable ring 9, which facilitates the positioning operation during use, thereby facilitating subsequent use, and also improves the use efficiency of the valve seat, facilitating subsequent operations.

[0034] See also Figure 4 , Figure 5 The movable ring 9 is provided with an insertion hole for the insertion rod 8 to pass through, and the inner wall of the insertion hole is slidably connected to the surface of the insertion rod 8.

[0035] The provided socket facilitates sliding and plugging operations during use, thereby facilitating subsequent use, improving the use efficiency of the valve seat, and also improving the convenience of using the valve seat.

[0036] See also Figure 4 , Figure 5 One end of the plug rod 8 is plugged into one side of the positioning ring 1, and the positioning ring 1 is provided with a plug hole for the plug rod 8 to be plugged in, and the inner wall of the plug hole is slidably connected to the surface of the plug rod 8.

[0037] The insertion hole on the positioning ring 1 is convenient for positioning and installing the valve seat during use, thereby facilitating subsequent use. At the same time, it also improves the use efficiency of the valve seat and facilitates subsequent operations.

[0038] See also Figure 2 , Figure 3 The lower surface of the concave ring 4 is provided with anti-slip grooves, and the concave ring 4 is made of rubber, and the bottom of the concave ring 4 is higher than the bottom of the positioning ring 1.

[0039] The anti-slip grooves are set to prevent it from sliding during use, thus facilitating subsequent use.

[0040] During operation, the threaded tube 2 on the positioning ring 1 is connected to the steel cylinder, and then during the fixing process, one side of the concave ring 4 contacts the bottle mouth of the bottle body and is squeezed, and then the shock-absorbing spring 3 squeezes one side of the concave ring 4, so as to facilitate the subsequent positioning operation during use and increase its sealing. In the subsequent use, it is convenient to position and install it, so as to facilitate subsequent use and improve the efficiency of the use of the valve seat. During the installation process, the plug rod 8 is inserted into the positioning ring 1. When installing, when the plug rod 8 is squeezed, the plug rod 8 squeezes the shock-absorbing ring 7, and then the buffer sheet 6 performs a buffering operation on it. At the same time, the reset spring 10 resets the buffer ring 5, so as to facilitate the subsequent reset operation of the components during use, thereby facilitating subsequent use, thereby improving the efficiency of the use of the valve seat and facilitating subsequent operations.

[0041] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A liquefied petroleum gas cylinder valve seat, comprising a positioning ring (1), characterized in that: The bottom of the positioning ring (1) is connected to a threaded tube (2), the lower surface of the positioning ring (1) is provided with an annular groove, a shock absorbing spring (3) is fixedly installed on the inner top wall of the annular groove, and the bottom of the shock absorbing spring (3) is fixedly connected via a concave ring (4); A buffer ring (5) is provided on the surface of the threaded tube (2) and below the positioning ring (1); a cavity is provided inside the buffer ring (5); a buffer sheet (6) is fixedly connected to one side of the inner wall of the cavity; a damping ring (7) is fixedly installed on one side of the buffer sheet (6); a plug rod (8) is fixedly installed on one side of the damping ring (7); a moving ring (9) is inserted on the surface of the plug rod (8); one side of the moving ring (9) is fixedly connected to one side of the buffer ring (5); and a return spring (10) is arranged around the surface of the plug rod (8).

2. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: A sealing ring (11) is fixedly mounted on the upper surface of the positioning ring (1), the upper surface of the sealing ring (11) is provided with anti-slip grooves, and the sealing ring (11) is made of silicone.

3. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: The surface of the concave ring (4) contacts the inner wall of the annular groove, and the inner wall of the concave ring (4) is slidably connected to the other side of the inner wall of the annular groove.

4. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: One end of the return spring (10) is fixedly connected to one side of the moving ring (9), and the other end of the return spring (10) is fixedly connected to one side of the damping ring (7).

5. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: The movable ring (9) is provided with an insertion hole for the insertion rod (8) to pass through, and the inner wall of the insertion hole is slidably connected to the surface of the insertion rod (8).

6. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: One end of the insertion rod (8) is plugged into one side of the positioning ring (1), and the positioning ring (1) is provided with a plugging hole for the insertion rod (8), and the inner wall of the plugging hole is slidably connected to the surface of the insertion rod (8).

7. The liquefied petroleum gas cylinder valve seat according to claim 1, characterized in that: The lower surface of the concave ring (4) is provided with anti-slip grooves, and the concave ring (4) is made of rubber. The bottom of the concave ring (4) is higher than the bottom of the positioning ring (1).

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