Pressure reducing valve with energy recovery function

Abstract

The present application relates to a kind of pressure reducing valve with energy recovery function, belong to pressure reducing valve technical field, comprising: main body, crankshaft, piston, magnetic shell and conductor, main body inside is equipped with flow passage and its top is equipped with container groove;Crankshaft rotates in container groove and has at least two journal;Container groove bottom is equipped with at least two sliding hole that are all communicated flow passage;Piston is at least two and respectively sealed sliding in at least two sliding hole, at least two piston top are all articulated with piston rod, and at least two piston rod top are respectively articulated on at least two journal;Magnetic shell is fixed on the outer wall of main body;Crankshaft one end rotates and extends main body and enters magnetic shell;Conductor is located in magnetic shell and is fixed in the extension end of crankshaft.The present application utilizes high-pressure gas or high-pressure liquid in flow passage to alternately push at least two pistons reciprocating sliding, drive crankshaft rotation, linkage conductor cuts the magnetic induction line of magnetic field inside magnetic shell, completes liquid kinetic energy or gas kinetic energy to electric energy conversion, reduces pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure reducing valve, in particular to a pressure reducing valve with energy recovery function. BACKGROUND

[0002] The pressure reducing valve is a kind of valve that can automatically reduce the pressure of pipeline, which can reduce the pressure of gas or liquid in front of the valve to the required level of the pipeline behind the valve.

[0003] At present, the common pressure reducing methods are generally throttling pressure reduction, hedge pressure reduction or expansion pressure reduction, which actually cause certain energy loss in the process of pressure reduction. However, in the process of pressure reduction, a large amount of energy is consumed by the internal structure of the valve, and the internal structure bears a large pressure and impact, which reduces the service life of the pressure reducing valve.

[0004] Therefore, how to design a pressure reducing valve with low working pressure, long service life and energy recovery function is a technical problem to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a pressure reducing valve with energy recovery function, which solves the technical problems of high working pressure and low service life of the existing pressure reducing valve.

[0006] The technical scheme for solving the above technical problems is as follows: a pressure reducing valve with energy recovery function, comprising a main body, a flow channel communicating with two side inlets and an outlet is arranged in the main body, further comprising: a crankshaft, a piston, a magnetic shell and a conductor,

[0007] The top end of the main body is provided with a container groove; the crankshaft is arranged in the container groove and its two ends are rotationally connected to the opposite two inner groove walls of the container groove with the vertical height direction of the main body as the axis, the crankshaft has at least two axles arranged at intervals in the axial direction, and the at least two axles are distributed on the two sides of the crankshaft; the groove bottom of the container groove is provided with at least two sliding holes each communicating with the flow channel; the piston is at least two and is sealingly slid in the at least two sliding holes respectively, the top end of each of the at least two pistons is hingedly connected with a piston rod and the bottom end of each of the at least two pistons is fixed with a baffle capable of closing the flow channel, and the top end of each of the at least two piston rods is hingedly connected to the at least two axles respectively, so that after high-pressure gas or high-pressure liquid is introduced into the flow channel, the at least two pistons are alternately pushed to reciprocally slide, and the crankshaft is driven to rotate; the magnetic shell has a magnetic field in the inside and is fixed on the outer side wall of the main body; one end of the crankshaft rotationally extends out of the main body and into the magnetic shell; the conductor is located in the magnetic shell and fixed on the extended end of the crankshaft, so as to rotate to cut the magnetic induction lines of the magnetic field with the rotation of the crankshaft, and generate electric current.

[0008] The beneficial effects of the present application are: improving the structure of the traditional pressure reducing valve, connecting the crankshaft in the container groove first, and then connecting the at least two pistons in the at least two sliding holes with the at least two journal of the crankshaft through the piston rod, because the flow channel is communicated with the at least two sliding holes, and because the bottom end of the at least two pistons is fixed with the baffle that can close the flow channel, the high pressure gas or high pressure liquid in the flow channel can be used to alternately push the at least two pistons to reciprocatingly slide, so as to drive the crankshaft to rotate, the magnetic conductor to cut the magnetic induction line of the magnetic field inside the magnetic shell, complete the conversion of liquid kinetic energy or gas kinetic energy to electric energy, reduce the pressure of high pressure gas or high pressure liquid, reduce the working pressure inside the pressure reducing valve, and prolong the service life of the pressure reducing valve.

[0009] On the basis of the above technical scheme, the present application can also be improved as follows.

[0010] Further, the main body includes a valve body and a valve cover, the valve body is provided with a gas-liquid inlet groove and a gas-liquid outlet groove on opposite sides respectively, and a first through groove and a second through groove are provided on the top surface of the valve body and communicated with the gas-liquid inlet groove and the gas-liquid outlet groove respectively; the bottom end of the valve cover is detachably connected to the top end of the valve body, and a flow channel is provided on the bottom surface of the valve cover and communicated with the first through groove and the second through groove; the flow channel is sequentially communicated with the gas-liquid inlet groove, the first through groove, the flow channel, the second through groove and the gas-liquid outlet groove; the container groove is arranged at the top end of the valve cover; the inlet is the slot of the gas-liquid inlet groove; the outlet is the slot of the gas-liquid outlet groove; at least two sliding holes are arranged in the interior of the valve cover and located between the first through groove and the second through groove; the magnetic shell is fixed on the outer side wall of the valve cover; one end of the crankshaft extends out of the valve cover.

[0011] Further, the magnetic shell includes a cylinder body, N-level magnets and S-level magnets, the cylinder body is sleeved on the outer circumferential side of the extended end of the crankshaft and fixed on the outer side wall of the valve cover; the N-level magnets and the S-level magnets are oppositely fixed on the inner cylinder wall of the cylinder body.

[0012] The above further beneficial effects are: the N-level magnets and the S-level magnets are oppositely fixed on the inner cylinder wall of the cylinder body, so that a magnetic field can be continuously generated in the interior of the cylinder body.

[0013] Further, the conductor includes a magnetic induction line cutting rod, N-level coils, S-level coils, N-level magnetic brushes and S-level magnetic brushes, the magnetic induction line cutting rod is located in the cylinder body and fixed on the extended end of the crankshaft; the N-level coils and the S-level coils are interval wound on the magnetic induction line cutting rod; the N-level magnetic brushes are fixed on the inner cylinder wall of the cylinder body and in sliding contact with the N-level coils, and the S-level magnetic brushes are fixed on the inner cylinder wall of the cylinder body and in sliding contact with the S-level coils, so as to conduct the current on the N-level coils and the S-level coils.

[0014] The further beneficial effect is that the N-level magnetic brush and the N-level coil are in sliding contact first, and then the S-level magnetic brush and the S-level coil are in sliding contact, so that the current on the N-level coil and the S-level coil is transmitted to the N-level magnetic brush and the S-level magnetic brush, and the wireless transmission of the current is completed.

[0015] Further, the battery holder is fixed on the top end of the valve cover and is provided with a fixing groove, and the battery is embedded in the fixing groove and is electrically connected with the N-level magnetic brush and the S-level magnetic brush through the power line.

[0016] Further, the valve body is provided with a mounting groove on the top end, the mounting groove is located on one side of the first through groove and is communicated with the flow-through groove, the groove bottom of the mounting groove is provided with a third through groove communicated with the gas-liquid inlet groove, and the second through groove is arranged on the groove bottom of the mounting groove; the outer peripheral side wall of the pressure relief seat is fixed on the inner peripheral groove wall of the mounting groove and is provided with a pressure relief hole communicated with the flow-through groove and the second through groove, a plurality of first pressure relief grooves communicated with the third through groove, a plurality of second pressure relief grooves communicated with the second through groove, and a transfer cavity communicated with the plurality of first pressure relief grooves and the plurality of second pressure relief grooves; the plurality of first pressure relief grooves and the plurality of second pressure relief grooves are arranged in a staggered manner to collide with the high-pressure gas or the high-pressure liquid and reduce the pressure of the high-pressure gas or the high-pressure liquid; the flow-through channel is sequentially communicated with the gas-liquid inlet groove, the first through groove, the flow-through groove, the pressure relief hole, the mounting groove, the second through groove, and the gas-liquid outlet groove; and at least two sliding holes are located between the first through groove and the pressure relief hole.

[0017] The further beneficial effect is that:

[0018] 1. The third through groove is opened in the valve body, and the third through groove is communicated with the gas-liquid inlet groove, so as to form a gas-liquid flow-through path parallel to the first through groove, prevent the interruption of the gas-liquid flow-through path of the pressure relief valve, and provide continuous pressure relief gas or pressure relief liquid for subsequent equipment;

[0019] 2. The throttle seat is fixed in the mounting groove, and the throttle seat is provided with a plurality of first pressure relief grooves communicated with the third through groove, a plurality of second pressure relief grooves communicated with the second through groove, and a transfer cavity communicated with the plurality of first pressure relief grooves and the plurality of second pressure relief grooves; and the plurality of first pressure relief grooves and the plurality of second pressure relief grooves are arranged in a staggered manner to collide with the high-pressure gas or the high-pressure liquid flowing into the plurality of first pressure relief grooves, the transfer cavity, and the plurality of second pressure relief grooves, and reduce the pressure of the high-pressure gas or the high-pressure liquid;

[0020] 3. After the high-pressure gas or the high-pressure liquid flowing in the flow-through groove pushes at least two pistons upward in sequence, the high-pressure gas or the high-pressure liquid is discharged through the pressure relief hole, the mounting groove, the second through groove, and the gas-liquid outlet groove.

[0021] Further, the pressure relief seat comprises a closure plate and a pressure relief strip, the outer peripheral wall of the closure plate is fixed on the inner peripheral wall of the installation groove, the bottom surface of the closure plate is separated from the bottom of the installation groove by a predetermined distance, and the pressure relief hole is arranged on the closure plate; the top surface of the pressure relief strip is fixed on the bottom surface of the closure plate corresponding to the third through groove and the second through groove, the bottom surface of the pressure relief strip is in sealing contact with the bottom of the installation groove, and the two end surfaces of the pressure relief strip are in sealing contact with the two inner side walls of the installation groove, respectively, a plurality of first pressure relief grooves are arranged on the side surface of the pressure relief strip close to the third through groove, a plurality of second pressure relief grooves are arranged on the side surface of the pressure relief strip close to the second through groove, and the transfer cavity is arranged in the interior of the pressure relief strip.

[0022] Further, the valve seat, the valve rod and the valve core are further included, the outer peripheral wall of the valve seat is fixed on the inner peripheral wall of the second through groove, and the valve hole is arranged on the valve seat; the bottom of the guide blind hole arranged on the bottom of the second through groove is fixed with a spring; the valve rod is slidably arranged in the guide blind hole, and the bottom end of the valve rod is in pressure contact with the spring; the valve core is fixed on the top end of the valve rod and can be extended into the valve hole along with the sliding of the valve rod.

[0023] The above further beneficial effects are: the high-pressure gas or high-pressure liquid flowing into the second through groove pushes the valve core and the valve rod to move downward, which can not only open the valve hole and guide the second through groove and the gas-liquid outlet groove, but also reduce the pressure of the high-pressure liquid or the high-pressure gas again.

[0024] Further, the outer peripheral wall of the valve core is in sliding sealing contact with the inner peripheral wall of the second through groove, and a plurality of gas-liquid through holes are arranged on the outer peripheral wall of the valve core corresponding to the valve hole. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an internal structure diagram of pushing one piston to move upward in the pressure relief valve with energy recovery function.

[0026] Figure 2 It is an internal structure diagram of pushing another piston to move upward in the pressure relief valve with energy recovery function.

[0027] Figure 3 It is a three-dimensional structure diagram of the pressure relief seat in the pressure relief valve with energy recovery function.

[0028] In the drawings, the components represented by each reference numeral are listed as follows:

[0029] 1, main body, 11, flow channel, 12, container groove, 13, sliding hole, 14, valve body, 141, gas-liquid inlet groove, 142, gas-liquid outlet groove, 143, first through groove, 144, second through groove, 1441, guide blind hole, 145, mounting groove, 146, third through groove, 15, valve cover, 151, flow groove, 2, crankshaft, 21, journal, 3, piston, 4, magnetic shell, 41, cylinder, 42, N-level magnet, 43, S-level magnet, 5, conductor, 51, magnetic induction line cutting rod, 52, N-level coil, 53, S-level coil, 54, N-level magnetic brush, 55, S-level magnetic brush, 6, piston rod, 7, baffle, 8, battery holder, 9, battery, 10, pressure reducing seat, 101, closing plate, 1011, pressure relief hole, 102, pressure reducing strip plate, 1021, first pressure reducing groove, 1022, second pressure reducing groove, 1023, transfer cavity, 16, valve seat, 17, valve stem, 18, valve core. DETAILED DESCRIPTION

[0030] The principles and features of the present application are described below in conjunction with the accompanying drawings, which are only used to explain the present application and are not intended to limit the scope of the present application.

[0031] As shown in Figure 1 and Figure 2 , a pressure reducing valve with energy recovery function, comprising a main body 1, the inside of the main body 1 is provided with a flow channel 11 communicating with the two side inlets and outlets, further comprising a crankshaft 2, a piston 3, a magnetic shell 4 and a conductor 5,

[0032] The top end of the main body 1 is provided with a container groove 12; the crankshaft 2 is placed in the container groove 12 and its two ends are rotationally connected to the opposite two inner groove walls of the container groove 12 with the height direction of the main body 1 as the axis, the crankshaft 2 has at least two axially arranged journals 21, and the at least two journals 21 are distributed on both sides of the crankshaft 2; the groove bottom of the container groove 12 is provided with at least two sliding holes 13 each communicating with the flow channel 11; the piston 3 is at least two and respectively seals and slides in the at least two sliding holes 13, the top end of the at least two pistons 3 is respectively hinged with a piston rod 6 and the bottom end of the at least two pistons 3 is respectively fixed with a baffle 7 capable of closing the flow channel 11, the top end of the at least two piston rods 6 is respectively hinged on the at least two journals 21, so that after high-pressure gas or high-pressure liquid is introduced into the flow channel 11, the at least two pistons 3 are alternately pushed to reciprocally slide, driving the crankshaft 2 to rotate; the magnetic shell 4 has a magnetic field inside and is fixed on the outer side wall of the main body 1; one end of the crankshaft 2 rotationally extends out of the main body 1 and into the magnetic shell 4; the conductor 5 is located in the magnetic shell 4 and is fixed on the extended end of the crankshaft 2, so as to rotate to cut the magnetic induction lines of the magnetic field with the rotation of the crankshaft 2, generating an electric current.

[0033] As shown in Figure 1 and Figure 2As shown in the drawings, in some embodiments, the main body 1 comprises a valve body 14 and a valve cover 15, the valve body 14 is provided with a gas-liquid inlet groove 141 and a gas-liquid outlet groove 142 on opposite sides respectively and a first through groove 143 and a second through groove 144 on the top surface and the first through groove 143 and the second through groove 144 are communicated with the gas-liquid inlet groove 141 and the gas-liquid outlet groove 142 respectively; the bottom end of the valve cover 15 is detachably connected to the top end of the valve body 14 and the bottom surface is provided with a flow-through groove 151 communicated with the first through groove 143 and the second through groove 144; the flow-through channel 11 is sequentially communicated with the gas-liquid inlet groove 141, the first through groove 143, the flow-through groove 151, the second through groove 144 and the gas-liquid outlet groove 142; the container groove 12 is arranged at the top end of the valve cover 15; the inlet is the slot of the gas-liquid inlet groove 141; the outlet is the slot of the gas-liquid outlet groove 142; at least two sliding holes 13 are arranged in the interior of the valve cover 15 and are located between the first through groove 143 and the second through groove 144; the magnetic shell 4 is fixed on the outer side wall of the valve cover 15; one end of the crankshaft 2 extends out of the valve cover 15.

[0034] As shown in the drawings, Figure 1 and Figure 2 In some embodiments, the magnetic shell 4 can comprise a cylinder body 41, N-level magnets 42 and S-level magnets 43, the cylinder body 41 is sleeved on the outer circumferential side of the extended end of the crankshaft 2 and is fixed on the outer side wall of the valve cover 15; the N-level magnets 42 and the S-level magnets 43 are fixed on the inner cylinder wall of the cylinder body 41.

[0035] As shown in the drawings, Figure 1 and Figure 2 In some embodiments, the conductor 5 can comprise a magnetic induction wire cutting rod 51, N-level coils 52, S-level coils 53, N-level magnetic brushes 54 and S-level magnetic brushes 55, the magnetic induction wire cutting rod 51 is located in the cylinder body 41 and is fixed on the extended end of the crankshaft 2; the N-level coils 52 and the S-level coils 53 are spaced apart and wound on the magnetic induction wire cutting rod 51; the N-level magnetic brushes 54 are fixed on the inner cylinder wall of the cylinder body 41 and are in sliding contact with the N-level coils 52, and the S-level magnetic brushes 55 are fixed on the inner cylinder wall of the cylinder body 41 and are in sliding contact with the S-level coils 53, so as to conduct the current on the N-level coils 52 and the S-level coils 53.

[0036] As shown in the drawings, Figure 1 and Figure 2 In some embodiments, the battery holder 8 and the battery 9 can also be included, the battery holder 8 is fixed on the top end of the valve cover 15 and is provided with a fixing groove thereon; the battery 9 is embedded in the fixing groove and is electrically connected with the N-level magnetic brushes 54 and the S-level magnetic brushes 55 through the power supply line.

[0037] As shown in the drawings, Figure 3As shown in the drawings, in some embodiments, the pressure relief seat 10 can also be included, the top end of the valve body 14 is provided with a mounting groove 145 located on one side of the first through groove 143 and communicated with the flow-through groove 151, the groove bottom of the mounting groove 145 is provided with a third through groove 146 communicated with the gas-liquid inlet groove 141, and the second through groove 144 is arranged on the groove bottom of the mounting groove 145; the outer peripheral side wall of the pressure relief seat 10 is fixed on the inner peripheral groove wall of the mounting groove 145 and is provided with a pressure relief hole 1011 communicated with the flow-through groove 151 and the second through groove 144, a plurality of first pressure relief grooves 1021 communicated with the third through groove 146, a plurality of second pressure relief grooves 1022 communicated with the second through groove 144, and a transfer cavity 1023 communicated with the plurality of first pressure relief grooves 1021 and the plurality of second pressure relief grooves 1022; the plurality of first pressure relief grooves 1021 and the plurality of second pressure relief grooves 1022 are arranged in a staggered manner to make the high-pressure gas or high-pressure liquid collide and reduce the pressure of the high-pressure gas or high-pressure liquid; the flow-through channel 11 is sequentially communicated with the gas-liquid inlet groove 141, the first through groove 143, the flow-through groove 151, the pressure relief hole 1011, the mounting groove 145, the second through groove 144, and the gas-liquid outlet groove 142; and the at least two sliding holes 13 are located between the first through groove 143 and the pressure relief hole 1011.

[0038] As shown in the drawings, Figure 3 in some embodiments, the pressure relief seat 10 can include a closure plate 101 and a pressure relief strip plate 102, the outer peripheral side wall of the closure plate 101 is fixed on the inner peripheral groove wall of the mounting groove 145 and the bottom surface thereof is spaced apart from the groove bottom of the mounting groove 145 by a predetermined distance, and the pressure relief hole 1011 is arranged on the closure plate 101; the top surface of the pressure relief strip plate 102 is fixed on the bottom surface of the closure plate 101 corresponding to the third through groove 146 and the second through groove 144, the bottom surface of the pressure relief strip plate 102 is in sealing contact with the groove bottom of the mounting groove 145, and the two end surfaces thereof are in sealing contact with the two inner side groove walls of the mounting groove 145, the plurality of first pressure relief grooves 1021 are arranged on the side surface of the pressure relief strip plate 102 close to the third through groove 146, the plurality of second pressure relief grooves 1022 are arranged on the side surface of the pressure relief strip plate 102 close to the second through groove 144, and the transfer cavity 1023 is arranged in the interior of the pressure relief strip plate 102.

[0039] As shown in the drawings, Figure 1 and Figure 2 in some embodiments, the valve seat 16, the valve rod 17, and the valve core 18 can also be included, the outer peripheral side wall of the valve seat 16 is fixed on the inner peripheral groove wall of the second through groove 144 and is provided with a valve hole thereon; the groove bottom of the second through groove 144 is provided with a guide blind hole 1441 and the hole bottom of the guide blind hole 1441 is fixed with a spring; the valve rod 17 is slidably arranged in the guide blind hole 1441 and the bottom end thereof is in pressure contact with the spring; and the valve core 18 is fixed on the top end of the valve rod 17 and can extend into the valve hole with the sliding of the valve rod 17.

[0040] In some embodiments, the outer peripheral side wall of the valve core 18 is in sliding sealing contact with the inner peripheral side wall of the second through groove 144, and the outer peripheral side of the valve core 18 corresponding to the valve hole is provided with a plurality of gas-liquid through holes.

[0041] The above merely provides the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure reducing valve with energy recovery function, comprising a body (1), wherein the interior of the body (1) is provided with a flow channel (11) connecting two inlets and outlets, characterized in that, Also includes: A crankshaft (2) is provided with a groove (12) at the top of the main body (1); the crankshaft (2) is placed in the groove (12) and its two ends are rotatably connected to the two inner walls of the groove (12) with the axis perpendicular to the height direction of the main body (1) as the axis; the crankshaft (2) has at least two journals (21) arranged at intervals in the axial direction, and the at least two journals (21) are distributed on both sides of the crankshaft (2); The piston (3) has at least two sliding holes (13) at the bottom of the groove (12) that are connected to the flow channel (11); there are at least two pistons (3) that are respectively sealed and slid in at least two of the sliding holes (13); the top of each of the at least two pistons (3) is hinged with a piston rod (6) and the bottom of each piston is fixed with a baffle (7) that can close the flow channel (11); the top of each of the at least two piston rods (6) is respectively hinged to at least two journals (21) so that after high pressure gas or high pressure liquid is introduced into the flow channel (11), the at least two pistons (3) are alternately pushed to slide back and forth, driving the crankshaft (2) to rotate; A magnetic shell (4) has a magnetic field inside and is fixed on the outer wall of the main body (1); one end of the crankshaft (2) rotates out of the main body (1) and extends into the magnetic shell (4); Conductor (5), which is located inside the magnetic shell (4) and fixed to the protruding end of the crankshaft (2), rotates and cuts the magnetic field lines of the magnetic field as the crankshaft (2) rotates, thereby generating current; The main body (1) includes a valve body (14) and a valve cover (15). The valve body (14) has a gas-liquid inlet groove (141) and a gas-liquid outlet groove (142) on its two opposite sides, and its top surface has a first through groove (143) communicating with the gas-liquid inlet groove (141) and a second through groove (144) communicating with the gas-liquid outlet groove (142). The bottom end of the valve cover (15) is detachably connected to the top end of the valve body (14), and its bottom surface has a flow groove (151) communicating with the first through groove (143) and the second through groove (144). The flow channel (11) is the gas-liquid inlet groove (141) connected in sequence. The valve cover (15) comprises a first through groove (143), a flow groove (151), a second through groove (144), and a gas-liquid outlet groove (142); a receiving groove (12) is located at the top of the valve cover (15); the inlet is the opening of the gas-liquid inlet groove (141); the outlet is the opening of the gas-liquid outlet groove (142); at least two sliding holes (13) are located inside the valve cover (15) and are located between the first through groove (143) and the second through groove (144); the magnetic shell (4) is fixed on the outer side wall of the valve cover (15); one end of the crankshaft (2) extends out of the valve cover (15) by rotation. It also includes a pressure reducing seat (10). The top of the valve body (14) is provided with a mounting groove (145). The mounting groove (145) is located on one side of the first through groove (143) and communicates with the flow groove (151). The bottom of the mounting groove (145) is provided with a third through groove (146) that communicates with the gas-liquid inlet groove (141). The second through groove (144) is provided at the bottom of the mounting groove (145). The outer peripheral sidewall of the pressure reducing seat (10) is fixed on the inner peripheral sidewall of the mounting groove (145) and is provided with a pressure relief hole (1011) that communicates with the flow groove (151) and the second through groove (144). It is provided with a plurality of first pressure reducing grooves (1021) that all communicate with the third through groove (146) and a plurality of first pressure reducing grooves (1021) that all communicate with the second through groove (144). The second pressure-reducing groove (1022) is provided with a transfer chamber (1023) that communicates with the plurality of first pressure-reducing grooves (1021) and the plurality of second pressure-reducing grooves (1022). The plurality of first pressure-reducing grooves (1021) and the plurality of second pressure-reducing grooves (1022) are staggered to allow high-pressure gas or high-pressure liquid to counteract each other and reduce the pressure of high-pressure gas or high-pressure liquid. The flow channel (11) is the gas-liquid inlet groove (141), the first through groove (143), the flow groove (151), the pressure relief hole (1011), the mounting groove (145), the second through groove (144), and the gas-liquid outlet groove (142) connected in sequence. At least two of the sliding holes (13) are located between the first through groove (143) and the pressure relief hole (1011). It also includes a valve seat (16), a valve stem (17), and a valve core (18). The outer peripheral sidewall of the valve seat (16) is fixed to the inner peripheral groove wall of the second through groove (144) and a valve hole is provided thereon. The bottom of the second through groove (144) is provided with a guide blind hole (1441) and a spring is fixed to the bottom of the guide blind hole (1441). The valve stem (17) slides in the guide blind hole (1441) and its bottom end presses against the spring. The valve core (18) is fixed to the top of the valve stem (17) and can extend into the valve hole as the valve stem (17) slides.

2. A pressure reducing valve with energy recovery function according to claim 1, characterized in that, The magnetic shell (4) includes a cylindrical body (41), an N-level magnet (42) and an S-level magnet (43). The cylindrical body (41) is sleeved on the outer periphery of the extended end of the crankshaft (2) and fixed to the outer side wall of the valve cover (15). The N-level magnet (42) and the S-level magnet (43) are fixed to the inner wall of the cylindrical body (41).

3. A pressure reducing valve with energy recovery function according to claim 2, characterized in that, The conductor (5) includes a magnetic wire cutting rod (51), an N-level coil (52), an S-level coil (53), an N-level magnetic brush (54), and an S-level magnetic brush (55). The magnetic wire cutting rod (51) is located inside the cylinder (41) and fixed to the extended end of the crankshaft (2). The N-level coil (52) and the S-level coil (53) are wound alternately on the magnetic wire cutting rod (51). The N-level magnetic brush (54) is fixed on the inner wall of the cylinder (41) and slides in contact with the N-level coil (52). The S-level magnetic brush (55) is fixed on the inner wall of the cylinder (41) and slides in contact with the S-level coil (53) to conduct current on the N-level coil (52) and the S-level coil (53).

4. A pressure reducing valve with energy recovery function according to claim 3, characterized in that, It also includes a battery holder (8) and a battery (9). The battery holder (8) is fixed to the top of the valve cover (15) and has a fixing groove thereon. The battery (9) is embedded in the fixing groove and is electrically connected to the N-level magnetic brush (54) and the S-level magnetic brush (55) through a power line.

5. A pressure reducing valve with energy recovery function according to claim 1, characterized in that, The pressure relief seat (10) includes a sealing plate (101) and a pressure relief strip plate (102). The outer peripheral sidewall of the sealing plate (101) is fixed to the inner peripheral groove wall of the mounting groove (145), and its bottom surface is separated from the bottom of the mounting groove (145) by a predetermined distance. The pressure relief hole (1011) is provided on the sealing plate (101). The top surface of the pressure relief strip plate (102) is fixed to the bottom surface of the sealing plate (101) between the third through groove (146) and the second through groove (144). The bottom surface of the plate (102) is in sealed contact with the bottom of the mounting groove (145), and its two end faces are in sealed contact with the two inner walls of the mounting groove (145), respectively. A plurality of first pressure-reducing grooves (1021) are provided on the side of the pressure-reducing plate (102) near the third through groove (146), and a plurality of second pressure-reducing grooves (1022) are provided on the side of the pressure-reducing plate (102) near the second through groove (144). The transfer cavity (1023) is provided inside the pressure-reducing plate (102).

6. A pressure reducing valve with energy recovery function according to claim 1, characterized in that, The outer peripheral sidewall of the valve core (18) is in sliding sealing contact with the inner peripheral sidewall of the second through groove (144), and the valve core (18) is provided with a plurality of gas-liquid through holes on the outer peripheral side corresponding to the valve hole.

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