CN211501789U

CN211501789U - Double-layer sealing pressure reducer

Info

Publication number: CN211501789U
Application number: CN201921327399.9U
Authority: CN
Inventors: 周小春
Original assignee: Shanghai Pan Yuan Machinery Co ltd
Current assignee: Shanghai Pan Yuan Machinery Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-09-15
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a double-deck sealed pressure reducer, including the pressure reducer body, annular arrangement groove has been seted up to the inlet end inner wall of pressure reducer body, annular arrangement groove inner wall is fixed with the sealing ring, and one side outer wall top center department that the sealing ring is close to the pressure reducer body is fixed with the piece of settling of symmetric distribution, two settle the relative one side outer wall of piece and articulate and have same circular apron, and sealing ring inner wall center department is fixed with built-in threaded ring, the inlet end has been seted up annular spout near the inner wall of sealing ring, and inlet end top outer wall center department and bottom outer wall center department all set up sliding opening intercommunication annular spout. The utility model discloses first sealing layer is constituteed to sealing ring and built-in screw ring, and last semicircle seals the card frame and seals the card frame combination with lower semicircle and form a sealed snap ring and air inlet pipe outer wall joint and form the second sealing layer, reaches the double-deck sealed effect of pressure reducer, but the opening of circular apron self-closing sealing ring, further sealed effect that reaches.

Description

Double-layer sealing pressure reducer

Technical Field

The utility model relates to a pressure reducer technical field especially relates to a double-deck sealed pressure reducer.

Background

Because gas cylinder internal pressure is higher, but gas welding and gas cutting are less with the required pressure of point of use, so need come to store the gas of the higher pressure in the gas cylinder with the pressure reducer and reduce to low-pressure gas, and it keeps steady state all the time to guarantee required operating pressure, but present pressure reducer only sets up a sealing ring or through screw thread and intake pipe lug connection mostly at the inlet end, sealed effect is not very good, and when operating personnel forgot the switch of closing the pressure reducer, when changing the intake pipe or extracting the intake pipe, can lead to losing heart etc. in the pressure reducer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a double-layer sealing pressure reducer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a double-layer sealed pressure reducer comprises a pressure reducer body, wherein an annular arranging groove is formed in the inner wall of the air inlet end of the pressure reducer body, a sealing ring is fixed on the inner wall of the annular arranging groove, and symmetrically distributed mounting blocks are fixed at the center of the top of the outer wall of one side of the sealing ring close to the pressure reducer body, the outer wall of the opposite side of the two mounting blocks is hinged with a same circular cover plate, and a built-in threaded ring is fixed at the center of the inner wall of the sealing ring, an annular chute is arranged on the inner wall of the air inlet end close to the sealing ring, and the centers of the top outer wall and the bottom outer wall of the air inlet end are respectively provided with a sliding port communicated annular sliding chute, the inner walls of the two sliding ports are respectively provided with a first connecting rod and a second connecting rod, and the outer wall of one end of the first movable connecting rod, which is opposite to the second connecting rod, is respectively fixed with a lower semicircular sealing snap ring and an upper semicircular sealing snap ring, and the outer wall of the air inlet end is screwed with an air inlet pipe fixing mechanism.

Preferably, the air inlet pipe fixing mechanism comprises a circular clamping sleeve, a connecting ring with an outer wall opening thread and an air inlet pipe, the circular clamping sleeve is in threaded connection with the outer wall of the air inlet end, the outer wall of the air inlet pipe is in sleeved connection with the connecting ring, a threaded connector is arranged at the center of the outer wall of one side, away from the pressure reducer body, of the circular clamping sleeve, and the connecting ring is in threaded connection with the threaded connector.

Preferably, the lower semicircular sealing snap ring is provided with a clamping groove at the outer wall of the two ends close to the upper semicircular sealing snap ring, and the upper semicircular sealing snap ring is fixed with a clamping block matched with the clamping groove at the outer wall of the two ends close to the lower semicircular sealing snap ring.

Preferably, the lower semicircular sealing clamping ring and the upper semicircular sealing clamping ring are in sliding fit with the inner wall of the annular sliding groove, and the first connecting rod and the second connecting rod are in sliding fit with the sliding port.

Preferably, the sliding opening is located at the joint of the air inlet end and the circular clamping sleeve, and the lower semicircular sealing clamping ring and the upper semicircular sealing clamping ring are clamped to form a sealing clamping ring matched with the specification of the air inlet pipe.

Preferably, the air inlet pipe is in threaded connection with the built-in threaded ring, and the specification of the circular cover plate is larger than the specification of the inner diameter of the sealing ring.

The utility model has the advantages that:

1. this double-deck sealed pressure reducer, intake pipe fixed establishment and relief pressure valve inlet end spiro union back, the intake pipe backs down circular apron, makes inlet end inner wall passageway open, intake pipe and built-in screw thread ring spiro union, sealing ring and built-in screw thread ring constitute first sealing layer, last semicircle sealed card frame forms a sealed snap ring with the combination of lower semicircle sealed card frame and the joint of intake pipe outer wall forms the second sealing layer, the double-deck sealed effect of pressure reducer has been reached

2. This double-deck sealed pressure reducer, when whole intake pipe fixed establishment and inlet end separation, the circular apron receives the influence of gravity and the interior gas of pressure reducer, and the opening of self-closing sealing ring does not let the gas leakage in the pressure reducer, and further sealed effect that reaches.

Drawings

Fig. 1 is a schematic view of a vertical cross-sectional structure of a double-layer sealed pressure reducer provided by the present invention;

fig. 2 is an enlarged schematic view of the structure of fig. 1.

In the figure: 1 pressure reducer body, 2 sealing rings, 3 circular apron, 4 built-in screw rings, 5 head rod, 6 semicircle sealing snap rings down, 7 second connecting rods, 8 last semicircle sealing snap rings, 9 circular cutting ferrule, 10 go-between, 11 intake pipes, 12 inlet ends.

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.

Referring to fig. 1-2, a double-layer sealed pressure reducer comprises a pressure reducer body 1, an annular mounting groove is formed in the inner wall of an air inlet end 12 of the pressure reducer body 1, a sealing ring 2 is fixed on the inner wall of the annular mounting groove, symmetrically distributed mounting blocks are fixed on the sealing ring 2 close to the center of the top of the outer wall of one side of the pressure reducer body 1, the outer wall of the opposite side of the two mounting blocks is hinged with a same circular cover plate 3, a built-in threaded ring 4 is fixed at the center of the inner wall of the sealing ring 2, an annular sliding groove is formed in the inner wall of the air inlet end 12 close to the sealing ring 2, sliding openings communicating with the annular sliding grooves are formed in the center of the outer wall of the top and the center of the outer wall of the bottom of the air inlet end 12, a first connecting rod 5 and a second connecting rod 7 are respectively arranged on the inner walls of the two, an air inlet pipe fixing mechanism is connected to the outer wall of the air inlet end 12 in a threaded manner, the air inlet pipe fixing mechanism comprises a circular clamping sleeve 9, a connecting ring 10 with an opening thread on the outer wall and an air inlet pipe 11, the circular clamping sleeve 9 is in threaded connection with the outer wall of the air inlet end 12, the outer wall of the air inlet pipe 11 is sleeved with the connecting ring 10, a threaded connector is arranged at the center of the outer wall of one side of the circular clamping sleeve 9, which is far away from the pressure reducer body 1, the connecting ring 10 is in threaded connection with the threaded connector, clamping grooves are formed in the outer walls of two ends, close to the upper semicircular sealing clamping ring 8, of the lower semicircular sealing clamping ring 6, clamping blocks matched with the clamping grooves are fixed on the outer walls of two ends, close to the lower semicircular sealing clamping ring 6, the lower semicircular sealing clamping ring 6 and the upper semicircular sealing clamping ring 8 are in sliding fit with the inner wall of the annular sliding chute, the first, and the lower semicircle sealing snap ring 6 and the upper semicircle sealing snap ring 8 are clamped to form a sealing snap ring matched with the specification of the air inlet pipe 11, the air inlet pipe 11 is in threaded connection with the built-in threaded ring 4, and the specification of the circular cover plate 3 is larger than the inner diameter specification of the sealing ring 2.

The working principle is as follows: when the sealing device is used, the air inlet pipe 11 of the air inlet pipe fixing mechanism is inserted into the air inlet end 12 of the pressure reducer body 1, the circular cover plate 3 is pushed open by the air inlet pipe 11, the inner wall channel of the air inlet end 12 is opened, the first connecting rod 5 and the second connecting rod 7 are pushed into the sliding port, the lower semicircular sealing snap ring 6 and the upper semicircular sealing snap ring 8 are clamped with the air inlet pipe 11, the circular clamping sleeve 9 is rotated to be in threaded connection with the air inlet end 12, meanwhile, the air inlet pipe 12 is in threaded connection with the built-in connecting ring 4, after the threaded connection is finished, the port of the sliding port is completely blocked by the circular clamping sleeve 9, the sealing performance between the upper semicircular sealing snap ring 6 and the lower semicircular sealing snap ring 8 as well as the air inlet pipe 11 is further fixed, the sealing ring 2 and the built-in threaded ring 4 form a first sealing layer, the upper semicircular sealing snap ring 6 and the lower semicircular, the possibility of gas leakage is eliminated by the two layers of sealing.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The double-layer sealed pressure reducer comprises a pressure reducer body (1) and is characterized in that an annular arrangement groove is formed in the inner wall of a gas inlet end (12) of the pressure reducer body (1), a sealing ring (2) is fixed to the inner wall of the annular arrangement groove, symmetrically distributed arrangement blocks are fixed to the center of the top of one side outer wall, close to the pressure reducer body (1), of the sealing ring (2), two annular sliding grooves are formed in the inner wall, close to the sealing ring (2), of the opposite side outer wall of the arrangement blocks, the outer wall of the opposite side of the arrangement blocks is hinged to a same circular cover plate (3), a built-in threaded ring (4) is fixed to the center of the inner wall of the sealing ring (2), sliding port communicating annular sliding grooves are formed in the center of the top outer wall and the center of the bottom outer wall of the gas inlet end (12), and a first connecting rod (5, and the outer wall of one end of the first connecting rod (5) opposite to the second connecting rod (7) is respectively fixed with a lower semicircular sealing snap ring (6) and an upper semicircular sealing snap ring (8), and the outer wall of the air inlet end (12) is screwed with an air inlet pipe fixing mechanism.

2. The double-layer sealing pressure reducer according to claim 1, wherein the air inlet pipe fixing mechanism comprises a circular clamping sleeve (9), a connecting ring (10) with an opening thread on the outer wall and an air inlet pipe (11), the circular clamping sleeve (9) is in threaded connection with the outer wall of the air inlet end (12), the outer wall of the air inlet pipe (11) is in sleeved connection with the connecting ring (10), a threaded connecting port is formed in the center of the outer wall of one side, away from the pressure reducer body (1), of the circular clamping sleeve (9), and the connecting ring (10) is in threaded connection with the threaded connecting port.

3. The double-layer sealing pressure reducer according to claim 1, wherein the outer walls of the two ends of the lower semicircular sealing snap ring (6) close to the upper semicircular sealing snap ring (8) are respectively provided with a clamping groove, and the outer walls of the two ends of the upper semicircular sealing snap ring (8) close to the lower semicircular sealing snap ring (6) are respectively fixed with a clamping block matched with the clamping grooves.

4. The double-layer sealed pressure reducer according to claim 1, wherein the lower semicircular sealed snap ring (6) and the upper semicircular sealed snap ring (8) are in sliding fit with the inner wall of the annular chute, and the first connecting rod (5) and the second connecting rod (7) are in sliding fit with the sliding port.

5. The double-layer sealing pressure reducer according to claim 1, wherein the sliding port is located at the joint of the air inlet end (12) and the circular clamping sleeve (9), and the lower semicircular sealing clamping ring (6) and the upper semicircular sealing clamping ring (8) are clamped to form a sealing clamping ring matched with the specification of the air inlet pipe (11).

6. The double-layer sealed pressure reducer according to claim 2, wherein the air inlet pipe (11) is screwed with the built-in threaded ring (4), and the size of the circular cover plate (3) is larger than the inner diameter size of the sealing ring (2).