CN113623446A

CN113623446A - Multifunctional safety energy-saving pressure regulator for liquefied petroleum gas

Info

Publication number: CN113623446A
Application number: CN202110957125.3A
Authority: CN
Inventors: 李俊德
Original assignee: Pinfeng Gas Safety Technology Guangdong Co ltd
Current assignee: Pinfeng Gas Safety Technology Guangdong Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2021-11-09

Abstract

The invention belongs to the technical field of liquefied petroleum gas, and particularly relates to a multifunctional liquefied petroleum gas safety energy-saving pressure regulator. According to the invention, the film support blocks distributed at four corners are used for avoiding overlarge moving distance of the first sealing piece due to suddenly increased impact force, and the deformation area of the rubber film is increased to match with the rapid change of air pressure in the cavity to increase the pressure difference change effect, so that the coping rate of the pressure regulating mechanism is improved.

Description

Multifunctional safety energy-saving pressure regulator for liquefied petroleum gas

Technical Field

The invention relates to the technical field of liquefied petroleum gas, in particular to a multifunctional liquefied petroleum gas safety energy-saving pressure regulator.

Background

With the development of the petrochemical industry, the liquefied petroleum gas has been paid more and more attention as a chemical basic raw material and a novel fuel, the supply and use of the liquefied petroleum gas are mainly divided into two modes of pipeline supply and gas cylinder, wherein the liquefied petroleum gas is often used in cooperation with a pressure regulator in the process of being used through the gas cylinder.

The pressure regulator that liquefied petroleum gas used mainly utilizes lever differential pressure feedback, step down the liquefied petroleum gas of output, steady voltage and pressure regulating, use liquefied petroleum gas's safety effect with the assurance gas steel bottle, but the pressure regulator that uses among the prior art, generally keep unobstructed all the time with the outlet duct of pressure regulator, the lever that is provided with the single-bar structure in the intake pipe position carries out the shutoff pressure regulating, often just open admission valve or when the air input has been increased suddenly in the pressure regulator air inlet position in the use in the in-service use process, pressure regulating mechanism in the pressure regulator needs the time to carry out the pressure regulating reaction, and the gas output that leads to the outlet duct position in the twinkling of an eye that the tolerance increases produces and changes by a wide margin, can influence actual liquefied petroleum gas's result of use.

Disclosure of Invention

Based on the technical problem of the background technology, the invention provides a multifunctional liquefied petroleum gas safety energy-saving pressure regulator.

The invention provides a multifunctional liquefied petroleum gas safe energy-saving pressure regulator, which comprises a base shell and a top seat shell, wherein both sides of the base shell are respectively communicated with an air inlet pipe and an air outlet pipe, a plugging seat is fixed at the middle position of the inner walls at both sides of the base shell, an arc-shaped plugging groove is formed in one side of the plugging seat close to the center of the base shell, a through hole is formed in the middle position of the plugging groove, a first plugging piece is connected to one side of the inner wall at the bottom of the base shell close to the air inlet pipe in a sliding manner, the outer wall of one side of the first plugging piece close to the air inlet pipe is matched with the inner wall of the plugging groove, a rubber film is detachably connected between the base shell and the top seat shell, a pressure regulating spring is arranged at the top of the rubber film, a film pressing plate in contact with the rubber film is fixed at the bottom of the pressure regulating spring, and a pressure regulating connecting mechanism is connected between the bottom of the rubber film and the first plugging piece, and the pressure regulating connecting mechanism is fixedly connected with the four corners of the bottom of the rubber film.

Preferably, pressure regulating coupling mechanism is provided with the connecting seat that is located central point and puts, and the connecting seat rotates between one side bottom that is close to the intake pipe and the first shutoff piece and is connected with the link, the link is provided with the extension rod and is located the dead lever and the installation pole at extension rod both ends respectively, the dead lever passes through bearing horizontal rotation and connects in one side top of first shutoff piece, the installation pole passes through bearing horizontal rotation and connects in the bottom of connecting seat one side, the four corners position of connecting seat is connected with the film bracer, the top of film bracer is fixed with rubber film's bottom outer wall contact.

Preferably, the both sides of connecting seat all are provided with the lever frame, and the lever frame is provided with the rotation portion that the level was placed, one side that rotation portion both ends inner wall is close to the connecting seat pierces through the first connecting portion that is fixed with shaft-like structure, first connecting portion passes through the bearing and is connected with the horizontal rotation between one side of connecting seat top, one side that the connecting seat was kept away from to rotation portion both ends inner wall pierces through the second connecting portion that is fixed with shaft-like structure, the one end that rotation portion was kept away from to the second connecting portion is fixed with the film kickstand, the position that rotation portion both ends inner wall is located between first connecting portion and the second connecting portion pierces through the supporting part that is fixed with shaft-like structure, the supporting part is located one side that the intermediate position is close to the film kickstand in the rotation portion, the position that base casing bottom inner wall is located the supporting part both ends all is fixed with the support frame, the both ends of supporting part are passed through the bearing respectively with rotate between two support frames and be connected.

Preferably, the intermediate position of footstock casing top inner wall is fixed with the vertical spacing section of thick bamboo of placing, and the footstock casing top can be dismantled with the position that a spacing section of thick bamboo corresponds and be connected with the apron, pressure regulating spring's top is fixed with the limiting plate with spacing section of thick bamboo inner wall sliding connection, the intermediate position threaded connection of apron has the vertical adjusting bolt of placing, the connecting hole has been seted up to the intermediate position at limiting plate top, rotate through the bearing between the bottom of adjusting bolt and the inner wall of connecting hole and be connected, the wearing groove that annular array distributes is seted up to the outer wall of footstock casing, the inner wall of wearing the groove is fixed with the closing cap.

Preferably, one side sliding connection that base casing bottom inner wall is close to the outlet duct has the second shutoff piece, and the second shutoff piece keeps away from one side of outlet duct and is connected with the emergent mechanism of buffering, and the bottom of first shutoff piece and second shutoff piece all is connected with spacing slider, and spacing spout has been seted up with the position that spacing slider corresponds to base casing bottom inner wall.

Preferably, the buffering emergency mechanism is provided with a sleeve positioned between the first plugging piece and the second plugging piece, the inner wall of the bottom of the base shell is positioned at one end, close to the air inlet pipe, of the sleeve and is connected with a buffer plate in a sliding mode, a gap is preset between the buffer plate and the first plugging piece, one side, far away from the air inlet pipe, of the buffer plate is fixedly provided with a buffer rod extending into the sleeve, one side, far away from the air outlet pipe, of the second plugging piece is fixedly provided with an auxiliary rod extending into the sleeve, and a spring connecting mechanism is arranged in the sleeve.

Preferably, the inner wall of the bottom of the base shell corresponds to the sleeve, a supporting block is fixed on the inner wall of the bottom of the base shell, a fixing shell and an installation shell are arranged on the sleeve, the cross section of the fixing shell and the cross section of the installation shell are of a semicircular structure, the fixing shell is fixed on the top of the supporting block, a buckling block is fixed on the top of the installation shell, the buckling block and the supporting block are detachably connected, the two ends of the sleeve are detachably connected with baffle plates of an annular structure, and the inner walls of the two baffle plates are respectively connected with the outer walls of the buffer rod and the auxiliary rod in a sliding mode.

Preferably, the both sides of installation shell top inner wall all are fixed with the stopper, spring coupling mechanism is provided with first connecting block and the second connecting block of difference sliding connection in the sleeve pipe both sides, fixed connection between one side outer wall that the second connecting block was kept away from to first connecting block and the one end of buffer beam, fixed connection between one side outer wall that the first connecting block was kept away from to the second connecting block and the one end of auxiliary rod, be connected with buffer spring between first connecting block and the second connecting block, be connected with reset spring between one side that the buffer board was kept away from to the second connecting block and the baffle, two stoppers are located one side that first connecting block and second connecting block are close to the buffer board respectively.

The beneficial effects of the invention are as follows:

1. a multifunctional energy-saving pressure regulator for liquefied petroleum gas is composed of a connecting frame, a connecting seat, a lever frame at both sides of said connecting seat, and four film supporting blocks arranged at four corners of said connecting seat, a pressure regulating mechanism consisting of a rubber film pulled up by a pressure regulating spring, a top pressure regulating spring for pressing the connecting seat, a first sealing part for pressing the sealing seat, a pressure regulating spring for pressing the sealing seat, a rubber film between the casing of base and the casing of top seat, and a film supporting block for pressing the connecting seat to move the first sealing part for sealing and pressure reduction, avoid first shutoff piece on the one hand because the impact force that increases suddenly and the migration distance is too big to improve actual pressure regulating effect to liquefied petroleum gas, on the other hand increases pressure differential change effect through the deformation region that increases rubber film with the atmospheric pressure that cooperates the indoor quick change of cavity, thereby improves the reply speed of pressure regulating mechanism, further strengthens pressure regulating effect and the efficiency that sets up, and the result of use when dealing with emergency.

2. A multifunctional liquefied petroleum gas safety energy-saving pressure regulator, one side of a first connecting block and one side of a second connecting block close to a buffer plate are both supported on the corresponding side wall of a limiting block due to the elasticity of a spring in a normal state, and a gap is left between a second plugging piece and a corresponding plugging seat which are connected through an auxiliary rod at the moment to ensure ventilation in the normal state, when the air inlet pipe is rapidly aerated to cause the air pressure of the air inlet pipe to be instantly increased, and a rubber film is deformed but the internal integral air pressure is not timely fed back and regulated, the first plugging piece moves to one side far away from the air inlet pipe to impact on the buffer plate for buffering and limiting, and the gap between the second plugging piece and the air outlet pipe is reduced along with the movement, thereby avoiding the influence on the use effect of liquefied petroleum gas due to the increase of air pressure at the air inlet position, and when the rubber film is damaged due to long-time use, accessible buffer spring and reset spring make first shutoff piece and second shutoff piece at the horizontal direction reciprocating motion can assist and carry out the pressure regulating and handle, and carry out emergent use to further improve the actual use effect of device.

Drawings

Fig. 1 is a schematic view of the overall structure of a multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to the present invention;

fig. 2 is an exploded schematic view of the overall structure of a multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to the present invention;

fig. 3 is a schematic cross-sectional structural view of a multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to the present invention;

FIG. 4 is a schematic structural view of a pressure regulating connection mechanism of the multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to the present invention;

fig. 5 is a schematic structural diagram of a buffering emergency mechanism of the multifunctional liquefied petroleum gas safety energy-saving pressure regulator provided by the invention.

In the figure: 1 base shell, 2 top seat shell, 201 closing cap, 202 spacing section of thick bamboo, 203 apron, 204 adjusting bolt, 3 intake pipe, 4 outlet ducts, 5 rubber films, 6 pressure regulating spring, 601 film clamp plate, 602 limiting plate, 7 shutoff seats, 701 first shutoff piece, 702 second shutoff piece, 8 pressure regulating coupling mechanism, 9 connecting seats, 10 film brace, 11 lever frame, 1101 rotating part, 1102 supporting part, 1103 first connecting part, 1104 second connecting part, 1105 support frame, 12 connecting frame, 1201 extension rod, 1202 fixed link, 1203 mounting rod, 13 buffering emergency mechanism, 1301, 1302 fixed shell, 1303 mounting shell, 1304 buckling block, 1305 limiting block, 1306 baffle, 14 buffering board, 1401 rod, 15 first connecting block, 16 second connecting block, 17 auxiliary rod, 18 buffering spring, 19 reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-4, a multifunctional liquefied petroleum gas safety energy-saving pressure regulator comprises a base shell 1 and a top seat shell 2, wherein both sides of the base shell 1 are respectively communicated with an air inlet pipe 3 and an air outlet pipe 4, a plugging seat 7 is fixed at the middle position of the inner walls at both sides of the base shell 1, one side of the plugging seat 7 close to the central position of the base shell 1 is provided with a plugging groove with an arc structure, the middle position of the plugging groove is provided with a through hole, one side of the inner wall at the bottom of the base shell 1 close to the air inlet pipe 3 is slidably connected with a first plugging piece 701, the outer wall of one side of the first plugging piece 701 close to the air inlet pipe 3 is matched with the inner wall of the plugging groove, a rubber film 5 is detachably connected between the base shell 1 and the top seat shell 2, the top of the rubber film 5 is provided with a pressure regulating spring 6, the bottom of the pressure regulating spring 6 is fixed with a film pressing plate 601 contacting with the rubber film 5, the pressure regulating connecting mechanism 8 is connected between the bottom of the rubber film 5 and the first blocking piece 701, and the pressure regulating connecting mechanism 8 is fixedly connected with four corners of the bottom of the rubber film 5.

In the invention, the pressure regulating connecting mechanism 8 is provided with a connecting seat 9 positioned in the central position, a connecting frame 12 is rotatably connected between the bottom end of one side of the connecting seat 9 close to the air inlet pipe 3 and the first plugging piece 701, the connecting frame 12 is provided with an extension rod 1201 and a fixing rod 1202 and an installation rod 1203 which are respectively positioned at two ends of the extension rod 1201, the fixing rod 1202 is horizontally and rotatably connected to the top end of one side of the first plugging piece 701 through a bearing, the installation rod 1203 is horizontally and rotatably connected to the bottom end of one side of the connecting seat 9 through a bearing, four corners of the connecting seat 9 are connected with film supporting blocks 10, and the top ends of the film supporting blocks 10 are fixedly contacted with the outer wall of the bottom of the rubber film 5.

In the invention, two sides of the connecting seat 9 are both provided with lever frames 11, the lever frames 11 are provided with rotating parts 1101 which are horizontally placed, one sides of inner walls of two ends of the rotating parts 1101, which are close to the connecting seat 9, penetrate through and are fixed with first connecting parts 1103 with rod-shaped structures, the first connecting parts 1103 are horizontally and rotatably connected with one side of the top of the connecting seat 9 through bearings, one sides of the inner walls of two ends of the rotating parts 1101, which are far away from the connecting seat 9, penetrate through and are fixed with second connecting parts 1104 with rod-shaped structures, one ends of the second connecting parts 1104, which are far away from the rotating parts 1101, are fixed with film supporting blocks 10, positions of the inner walls of two ends of the rotating parts 1101, which are located between the first connecting parts 1103 and the second connecting parts 1104, penetrate through and are fixed with supporting parts 1102 with rod-shaped structures, the supporting parts 1102 are located at one side of the middle positions of the rotating parts 1101, which are close to the film supporting blocks 10, are fixed with supporting frames 1105, and two ends of the inner walls of the bottom of the base shell 1, which are located at two ends of the supporting parts 1105, are respectively rotatably connected with the two supporting frames 1105 through bearings.

In the invention, a pressure regulating connecting mechanism 8 is formed by a connecting frame 12, a connecting seat 9, lever frames 11 at two sides and film supporting blocks 10 distributed at four corners, a rubber film 5 is pulled upwards by a top pressure regulating spring 6 under a normal state to enable the connecting seat 9 to downwards press a first plugging piece 701 to press a plugging seat 7, air inlet pressure overcomes the preset resistance of the pressure regulating spring 6 to open the first plugging piece 701 during air inlet, a rubber film 5 is upwards extruded when the air pressure of a cavity between a base shell 1 and a top seat shell 2 is overlarge, the connecting seat is downwards pressed by the lever frames 11 to move the first plugging piece 701 to perform plugging and pressure reduction, the film supporting blocks 10 distributed at the four corners can quickly perform corresponding pressure reduction treatment when local rubber films 5 are upwards blown due to local air pressure change, and the first plugging piece 701 can be dispersed to the rubber film 5 when being subjected to suddenly increased impact force by the four distributed film supporting blocks 10, avoid first shutoff piece 701 on the one hand because the impact force that increases suddenly and the migration distance is too big to improve actual pressure regulating effect to liquefied petroleum gas, on the other hand increases pressure differential change effect through the deformation region that increases rubber film 5 with the atmospheric pressure that cooperates the indoor quick change of cavity, thereby improves the reply speed of pressure regulating mechanism, further strengthens pressure regulating effect and the efficiency that sets up, and the result of use when dealing with emergency.

In the invention, a vertically placed limiting cylinder 202 is fixed at the middle position of the inner wall of the top of a top seat shell 2, a cover plate 203 is detachably connected at the position of the top seat shell 2 corresponding to the limiting cylinder 202, a limiting plate 602 which is in sliding connection with the inner wall of the limiting cylinder 202 is fixed at the top end of a pressure regulating spring 6, a vertically placed regulating bolt 204 is in threaded connection with the middle position of the cover plate 203, a connecting hole is formed at the middle position of the top of the limiting plate 602, the bottom end of the regulating bolt 204 is rotatably connected with the inner wall of the connecting hole through a bearing, the pressure regulating spring 6 is limited by the limiting cylinder 202 so as to ensure that the pressure regulating spring 6 only extends and retracts in the vertical direction to ensure the stability of pressure regulation, the strength is set by pre-rotating the regulating bolt 204, penetrating grooves distributed in an annular array are formed in the outer wall of the top seat shell 2, and sealing covers 201 are fixed on the inner walls of the penetrating grooves, the film pressing plate 601 and the rubber film 5 are disassembled and assembled through the groove penetrating position, so that the whole device is convenient to assemble, disassemble and maintain.

Example 2

Referring to fig. 1-5, a multifunctional liquefied petroleum gas safe and energy-saving pressure regulator, one side of the inner wall of the bottom of a base shell 1, which is close to an outlet pipe 4, is slidably connected with a second plugging piece 702, one side of the second plugging piece 702, which is far away from the outlet pipe 4, is connected with a buffering emergency mechanism 13, the bottoms of the first plugging piece 701 and the second plugging piece 702 are both connected with a limiting slide block, and a limiting slide groove is formed in the position of the inner wall of the bottom of the base shell 1, which corresponds to the limiting slide block.

According to the invention, the buffering emergency mechanism 13 is provided with a sleeve positioned between the first plugging piece 701 and the second plugging piece 702, the end, close to the air inlet pipe 3, of the sleeve, which is positioned on the inner wall of the bottom of the base shell 1, is connected with a buffering plate 14 in a sliding manner, a gap is preset between the buffering plate 14 and the first plugging piece 701, a buffering rod 1401 extending into the sleeve is fixed on one side, away from the air inlet pipe 3, of the buffering plate 14, an auxiliary rod 17 extending into the sleeve is fixed on one side, away from the air outlet pipe 4, of the second plugging piece 702, and a spring connecting mechanism is arranged in the sleeve.

In the invention, a supporting block 1301 is fixed on the position, corresponding to the sleeve, of the inner wall of the bottom of the base shell 1, the sleeve is provided with a fixed shell 1302 and an installation shell 1303, the cross sections of the fixed shell 1302 and the installation shell 1303 are of a semicircular structure, the fixed shell 1302 is fixed on the top of the supporting block 1301, the top of the installation shell 1303 is fixed with a buckling block 1304, the buckling block 1304 is detachably connected with the supporting block 1301, two ends of the sleeve are detachably connected with baffle plates 1306 in an annular structure, and the inner walls of the two baffle plates 1306 are respectively in sliding connection with the outer walls of the buffer rod 1401 and the auxiliary rod 17.

In the invention, two sides of the inner wall of the top of the mounting shell 1303 are both fixed with limiting blocks 1305, the spring connecting mechanism is provided with a first connecting block 15 and a second connecting block 16 which are respectively connected with two sides of the sleeve in a sliding manner, the outer wall of one side of the first connecting block 15 far away from the second connecting block 16 is fixedly connected with one end of the buffer rod 1401, the outer wall of one side of the second connecting block 16 far away from the first connecting block 15 is fixedly connected with one end of the auxiliary rod 17, a buffer spring 18 is connected between the first connecting block 15 and the second connecting block 16, a return spring 19 is connected between one side of the second connecting block 16 far away from the buffer plate 14 and the baffle 1306, and the two limiting blocks 1305 are respectively located on one sides of the first connecting block 15 and the second connecting block 16 close to the buffer plate 14.

When the invention is used: under normal conditions, the side of the first connecting block 15 and the side of the second connecting block 16 close to the buffer plate 14 are both supported against the side wall of the corresponding limiting block 1305 due to the elastic force of the spring, and at this time, a gap is left between the second blocking piece 702 connected by the auxiliary rod 17 and the corresponding blocking seat 7 to ensure ventilation under normal conditions, when the position of the air inlet pipe 3 is rapidly inflated to cause the air pressure of the air inlet pipe 3 to be instantly increased, and the rubber membrane 5 is deformed but the internal whole air pressure is not timely fed back and adjusted, the first blocking piece 701 moves to the side far away from the air inlet pipe 3 to impact on the buffer plate 14 to perform buffering and limiting, and the gap between the second blocking piece 702 and the air outlet pipe 4 is reduced along with the movement, thereby avoiding the influence on the use effect of liquefied petroleum gas due to the increase of air output when the air pressure at the air inlet position is suddenly increased, and when the rubber membrane 5 is damaged due to long-time use, the first blocking piece 701 and the second blocking piece 702 can reciprocate in the horizontal direction through the buffer spring 18 and the return spring 19 to assist in pressure regulation treatment, so that emergency use is performed, and the actual use effect of the device is further improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a multi-functional liquefied petroleum gas safety and energy-saving pressure regulator, includes base casing (1) and footstock casing (2), the both sides of base casing (1) communicate respectively has intake pipe (3) and outlet duct (4), its characterized in that, the intermediate position of base casing (1) both sides inner wall all is fixed with shutoff seat (7), and shutoff seat (7) are close to one side that base casing (1) central point put and have seted up the shutoff groove of arc structure, and the intermediate position of shutoff groove has seted up the through-hole, one side sliding connection that base casing (1) bottom inner wall is close to intake pipe (3) has first shutoff piece (701), and one side outer wall that first shutoff piece (701) is close to intake pipe (3) and the inner wall looks adaptation of shutoff groove, can dismantle between base casing (1) and footstock casing (2) and be connected with rubber film (5), and the top of rubber film (5) is provided with pressure regulating spring (6), and the bottom of pressure regulating spring (6) is fixed with film clamp plate (601) with rubber film (5) contact, be connected with pressure regulating coupling mechanism (8) between the bottom of rubber film (5) and first shutoff piece (701), and the equal fixed connection in four corners position of pressure regulating coupling mechanism (8) and rubber film (5) bottom.

2. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to claim 1, the pressure regulating connecting mechanism (8) is provided with a connecting seat (9) positioned at the central position, and connecting seat (9) are close to between one side bottom and the first shutoff piece (701) of intake pipe (3) and rotate and are connected with link (12), link (12) are provided with extension rod (1201) and are located dead lever (1202) and installation pole (1203) at extension rod (1201) both ends respectively, dead lever (1202) are connected in one side top of first shutoff piece (701) through bearing horizontal rotation, installation pole (1203) are connected in the bottom of connecting seat (9) one side through bearing horizontal rotation, the four corners position of connecting seat (9) is connected with film bracer (10), the top of film bracer (10) is fixed with the bottom outer wall contact of rubber film (5).

3. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to claim 2, wherein the lever frame (11) is disposed on each side of the connecting seat (9), the lever frame (11) is disposed with a horizontally disposed rotating portion (1101), a first connecting portion (1103) with a rod-like structure is fixed on one side of the inner wall of each end of the rotating portion (1101) close to the connecting seat (9) through penetration, the first connecting portion (1103) is horizontally and rotatably connected with one side of the top of the connecting seat (9) through a bearing, a second connecting portion (1104) with a rod-like structure is fixed on one side of the inner wall of each end of the rotating portion (1101) far away from the connecting seat (9) through penetration, a thin film supporting block (10) is fixed on one end of the second connecting portion (1104) far away from the rotating portion (1101), and a supporting portion (1104) with a rod-like structure is fixed on a position of the inner wall of each end of the rotating portion (1101) between the first connecting portion (1103) and the second connecting portion (1102), the supporting part (1102) is located on one side, close to the film supporting block (10), of the middle position of the rotating part (1101), supporting frames (1105) are fixed on the positions, located at the two ends of the supporting part (1102), of the inner wall of the bottom of the base shell (1), and the two ends of the supporting part (1102) are respectively in rotating connection with the two supporting frames (1105) through bearings.

4. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to claim 1, wherein a vertically-arranged limiting barrel (202) is fixed at an intermediate position of the inner wall of the top seat housing (2), a cover plate (203) is detachably connected at a position corresponding to the limiting barrel (202) at the top of the top seat housing (2), a limiting plate (602) slidably connected with the inner wall of the limiting barrel (202) is fixed at the top end of the pressure regulating spring (6), a vertically-arranged adjusting bolt (204) is connected to the intermediate position of the cover plate (203) through threads, a connecting hole is formed at an intermediate position of the top of the limiting plate (602), the bottom end of the adjusting bolt (204) is rotatably connected with the inner wall of the connecting hole through a bearing, a penetrating groove distributed in an annular array is formed in the outer wall of the top seat housing (2), and a sealing cover (201) is fixed on the inner wall of the penetrating groove.

5. The multifunctional liquefied petroleum gas safe and energy-saving pressure regulator according to claim 1, wherein a second plugging piece (702) is slidably connected to one side of the inner wall of the bottom of the base housing (1) close to the outlet pipe (4), a buffering emergency mechanism (13) is connected to one side of the second plugging piece (702) away from the outlet pipe (4), both the bottoms of the first plugging piece (701) and the second plugging piece (702) are connected with a limiting slide block, and a limiting slide groove is formed in a position of the inner wall of the bottom of the base housing (1) corresponding to the limiting slide block.

6. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to claim 5, wherein the buffering emergency mechanism (13) is provided with a sleeve positioned between the first blocking piece (701) and the second blocking piece (702), one end of the inner wall of the bottom of the base shell (1), which is positioned at the end of the sleeve close to the air inlet pipe (3), is slidably connected with a buffer plate (14), a gap is preset between the buffer plate (14) and the first blocking piece (701), one side of the buffer plate (14), which is far away from the air inlet pipe (3), is fixed with a buffer rod (1401) extending into the sleeve, one side of the second blocking piece (702), which is far away from the air outlet pipe (4), is fixed with an auxiliary rod (17) extending into the sleeve, and a spring connection mechanism is arranged in the sleeve.

7. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator according to claim 6, wherein a supporting block (1301) is fixed on the inner wall of the bottom of the base housing (1) at a position corresponding to the sleeve, the sleeve is provided with a fixing shell (1302) and an installation shell (1303) with semicircular cross sections, the fixing shell (1302) is fixed on the top of the supporting block (1301), a buckling block (1304) is fixed on the top of the installation shell (1303), the buckling block (1304) is detachably connected with the supporting block (1301), two ends of the sleeve can be detachably connected with baffle plates (1306) with annular structures, and the inner walls of the two baffle plates (1306) are respectively in sliding connection with the outer walls of the buffer rod (1401) and the auxiliary rod (17).

8. The multifunctional liquefied petroleum gas safety energy-saving pressure regulator as claimed in claim 7, wherein two sides of the inner wall of the top of the mounting housing (1303) are fixed with stoppers (1305), the spring connecting mechanism is provided with a first connecting block (15) and a second connecting block (16) which are slidably connected to two sides of the sleeve respectively, the outer wall of one side of the first connecting block (15) far away from the second connecting block (16) is fixedly connected with one end of the buffer rod (1401), the outer wall of one side of the second connecting block (16) far away from the first connecting block (15) is fixedly connected with one end of the auxiliary rod (17), a buffer spring (18) is connected between the first connecting block (15) and the second connecting block (16), a return spring (19) is connected between one side of the second connecting block (16) far away from the buffer plate (14) and the baffle plate (1306), and the two stoppers (1305) are respectively located on one side of the first connecting block (15) and one side of the second connecting block (16) near the buffer plate (14) .