CN211693690U

CN211693690U - Small-flow single-stage pressure reducer

Info

Publication number: CN211693690U
Application number: CN201921327453.XU
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: 2020-10-16
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a small flow single-stage pressure reducer, including lower valve casing, the gas vent has been seted up to one side outer wall of lower valve casing, and one side outer wall that the gas vent was kept away from to lower valve casing has seted up the air inlet, the inner wall of air inlet and gas vent all etches threadedly, and the inner wall of air inlet has the screwed pipe through threaded connection, the one end of screwed pipe is provided with first worry cover, lower valve casing bottom inner wall is provided with the valve rod, the inner wall of lower valve casing is provided with the case, and the inner wall of lower valve casing is provided with the diaphragm, diaphragm and case all cup joint on the valve rod, and the diaphragm is located the case directly over. The utility model discloses a set up first considering the cover on the thread bush, filter out great granule debris through first considering the cover, avoid taking place to block up in the voltage regulator, consider the cover through setting up the second at the case inner wall, the second in the case is considered the cover and is realized the secondary filter, through reversely blowing to the pressure reducer, has solved current pressure reducer and has not set up filter equipment's problem.

Description

Small-flow single-stage pressure reducer

Technical Field

The utility model relates to a pressure reducer technical field especially relates to a low discharge single-stage pressure reducer.

Background

The pressure reducer is a device for reducing the pressure of the high-pressure oxygen stored in the oxygen cylinder to low-pressure oxygen required for gas welding. Because of the high pressure in the cylinder and the low pressure required at the gas welding, gas cutting and point of use, a pressure reducer is required to reduce the higher pressure gas stored in the cylinder to a lower pressure gas and to ensure that the required operating pressure remains stable throughout. In short, the pressure reducer is a regulator that reduces high-pressure gas to low-pressure gas and keeps the pressure and flow rate of the output gas constant.

The known pressure reducers are not provided with filtering means inside, but the pressure reducers are not used with any filtering means during use, which results in that the pressure reducer is prone to clogging.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a small-flow single-stage pressure reducer.

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

the utility model provides a low discharge single-stage pressure reducer, includes lower valve casing, the gas vent has been seted up to one side outer wall of lower valve casing, and one side outer wall that the gas vent was kept away from to lower valve casing has seted up the air inlet, the equal sculpture of inner wall of air inlet and gas vent has the screw thread, and the inner wall of air inlet has the screwed pipe through threaded connection, the one end of screwed pipe is provided with first considering cover, lower valve casing bottom inner wall is provided with the valve rod, the inner wall of lower valve casing is provided with the case, and the inner wall of lower valve casing is provided with the diaphragm, diaphragm and case all cup joint on the valve rod, and the diaphragm is located the case directly over, valve casing top outer.

Preferably, the outer wall of the top of the upper valve shell is provided with an adjusting knob, and the inner wall of the upper valve shell is provided with a pressure adjusting spring.

Preferably, the valve rod penetrates through the pressure regulating spring to be connected to the regulating knob, and one end of the pressure regulating spring is in contact with the diaphragm.

Preferably, the inner walls of the two sides of the valve core are provided with partition plates, and the outer wall of the top of each partition plate is provided with a mounting opening.

Preferably, the inner wall of the mounting port is sleeved with a second filter cover, and the outer wall of one side of the valve core is provided with an arc-shaped opening.

Preferably, the aperture of first considering the cover mesh is greater than the aperture of second considering the cover mesh, and the height that arc open-ended highly is higher than the baffle, the both sides outer wall of lower valve casing all is provided with the manometer.

The utility model has the advantages that:

1. this low flow single-stage pressure reducer through set up the thread bush at the inlet end, through set up first considering the cover on the thread bush, filters out great granule debris through first considering the cover, takes place to block up in avoiding the voltage regulator, threaded connection's convenient to detach conveniently clears up.

2. This low flow single-stage pressure reducer, through setting up the second at the case inner wall and worry the cover, the second in the case is considered the cover and is realized the secondary filter, and through blowing in reverse to the pressure reducer, conveniently worry the impurity that covers with the second and blow off, has solved current pressure reducer and has not set up filter equipment's problem.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a small-flow single-stage pressure reducer provided by the present invention;

fig. 2 is a schematic front view of a small-flow single-stage pressure reducer of the present invention;

fig. 3 is a schematic view of a valve element structure of a small-flow single-stage pressure reducer provided by the present invention.

In the figure: 1 lower valve casing, 2 gas vents, 3 air inlets, 4 screwed pipes, 5 first filter covers, 6 valve cores, 7 diaphragms, 8 upper valve casings, 9 pressure regulating springs, 10 adjusting knobs, 11 pressure gauges, 12 clapboards, 13 second filter covers and 14 arc-shaped openings.

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. 1-3, a small-flow single-stage pressure reducer comprises a lower valve casing 1, an exhaust port 2 is arranged on one side outer wall of the lower valve casing 1, an air inlet 3 is arranged on one side outer wall of the lower valve casing 1 far away from the exhaust port 2, threads are etched on the inner walls of the air inlet 3 and the exhaust port 2, the inner wall of the air inlet 3 is connected with a threaded pipe 4 through threads, one end of the threaded pipe 4 is provided with a first filter cap 5, the inner wall of the bottom of the lower valve casing 1 is provided with a valve rod, the inner wall of the lower valve casing 1 is provided with a valve core 6, the inner wall of the lower valve casing 1 is provided with a diaphragm 7, the diaphragm 7 and the valve core 6 are both sleeved on the valve rod, the diaphragm 7 is positioned right above the valve core 6, the outer wall of the top of the lower valve casing 1 is fixed with an upper valve casing 8 through bolts, the, and the one end of pressure regulating spring 9 contacts with diaphragm 7, the both sides inner wall of case 6 is provided with baffle 12, and the installing port has been seted up to baffle 12 top outer wall, the cover 13 has been considered to the second to the inner wall of installing port cup jointed, and the arc opening 14 has been seted up to one side outer wall of case 6, the aperture of the 5 meshs of first considering cover is greater than the aperture of the cover 13 meshs of second considering, and the height that highly is higher than baffle 12 of arc opening 14, the both sides outer wall of lower valve casing 1 all is provided with manometer 11.

The working principle is as follows: during the use, through set up thread bush 4 at air inlet 3 end, through set up first considering cover 5 on thread bush 4, filter out great granule debris through first considering cover 5, take place to block up in avoiding the voltage regulator, threaded connection's convenient to detach conveniently clears up, consider cover 13 through setting up the second at 6 inner walls of case, second in the case 6 is considered cover 13 and is realized the secondary filter, and through carrying out reverse blowing to the pressure reducer, the convenient impurity of considering cover 13 with the second blows off.

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. A small-flow single-stage pressure reducer comprises a lower valve casing (1) and is characterized in that an air outlet (2) is arranged on the outer wall of one side of the lower valve casing (1), an air inlet (3) is arranged on the outer wall of one side of the lower valve shell (1) far away from the exhaust port (2), threads are etched on the inner walls of the air inlet (3) and the exhaust port (2), the inner wall of the air inlet (3) is connected with a threaded pipe (4) through threads, one end of the threaded pipe (4) is provided with a first filter cover (5), a valve rod is arranged on the inner wall of the bottom of the lower valve casing (1), a valve core (6) is arranged on the inner wall of the lower valve casing (1), and the inner wall of the lower valve casing (1) is provided with a diaphragm (7), the diaphragm (7) and the valve core (6) are both sleeved on the valve rod, and the diaphragm (7) is positioned right above the valve core (6), and the outer wall of the top of the lower valve shell (1) is fixed with an upper valve shell (8) through a bolt.

2. A small-flow single-stage pressure reducer according to claim 1, characterized in that the outer wall of the top of the upper valve housing (8) is provided with an adjusting knob (10) and the inner wall of the upper valve housing (8) is provided with a pressure regulating spring (9).

3. A low-flow single-stage pressure reducer according to claim 2, wherein the stem is connected to the adjusting knob (10) through a pressure regulating spring (9), and one end of the pressure regulating spring (9) is in contact with the diaphragm (7).

4. The small-flow single-stage pressure reducer according to claim 1, wherein partition plates (12) are arranged on the inner walls of the two sides of the valve core (6), and the outer wall of the top of each partition plate (12) is provided with a mounting opening.

5. The small-flow single-stage pressure reducer according to claim 4, wherein the inner wall of the mounting port is sleeved with a second filter cover (13), and the outer wall of one side of the valve core (6) is provided with an arc-shaped opening (14).

6. A small-flow single-stage pressure reducer according to claim 5, wherein the aperture of the mesh of the first cover (5) is larger than that of the mesh of the second cover (13), the height of the arc-shaped opening (14) is higher than that of the partition (12), and the outer walls of the two sides of the lower valve casing (1) are provided with pressure gauges (11).