CN216009677U

CN216009677U - Micro-pressure reducing valve with ultra-large adjusting range

Info

Publication number: CN216009677U
Application number: CN202121890240.5U
Authority: CN
Inventors: 柴赛璐; 张建新
Original assignee: Hangzhou Fuyang Mingda Instrument Valve Industry Co ltd
Current assignee: Hangzhou Fuyang Mingda Instrument Valve Industry Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-03-11
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses a micro-pressure reducing valve with an ultra-large adjusting range, which comprises a valve body, an actuating mechanism and a pneumatic actuating mechanism, wherein the valve body is provided with the actuating mechanism and the pneumatic actuating mechanism, two ends of the valve body are provided with two guide pipes, one guide pipe is provided with a throttle valve, the other guide pipe is used for communicating the actuating mechanism with the valve body, the guide pipe connected with the throttle valve is a front valve guide pipe, the other guide pipe is a front valve guide pipe, and the pneumatic actuating mechanism is provided with an air inlet valve. In this micro-pressure relief valve of super large control range, can promote adjusting screw spiral and remove along the axis direction of fixed internal thread post for adjusting screw exerts the one end in the driving lever with thrust, uses the pin rod to promote the sealed rubber post rotation as the axle with the other end of driving lever, until the inside with sealed rubber post insert through-hole, avoids the not use through-hole jam or corrosion that leads to of micro-pressure relief valve.

Description

Micro-pressure reducing valve with ultra-large adjusting range

Technical Field

The utility model relates to the technical field of micro-pressure reducing valves, in particular to a micro-pressure reducing valve with an ultra-large adjusting range.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.

In an ultra-low pressure reducing valve of patent application No. CN211951568U, the present invention provides an ultra-low pressure reducing valve comprising: the valve core assembly comprises an actuating mechanism, a diaphragm assembly, a first cover body, a first spring, an adjusting assembly, a first valve body, a valve core assembly, a valve seat, a second cover body, a second valve body, a piston assembly, a second spring and a guide pipe. Because the flow capacity of the micro-pressure pilot valve is far greater than the flow capacity of the middle air inlet of the piston assembly, the opening and closing of the main valve are controlled by the micro-pressure pilot valve, so that the technical effect of pressure adjustment in the range is realized, and the following problems exist:

the matching of the valve seat and the valve core of the micro-pressure reducing valve is not tight, collision and abrasion are easy to generate, the operation effect of the valve seat and the valve core is influenced, and the isolation protection is not convenient to provide for a through hole formed in the micro-pressure reducing valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a micro-pressure reducing valve with an ultra-large adjusting range, and aims to solve the problems that the matching of a valve seat and a valve core of the micro-pressure reducing valve is not tight, collision and abrasion are easily generated, the operation effects of the valve seat and the valve core are influenced, and the isolation protection is not conveniently provided for a through hole formed in the micro-pressure reducing valve in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a minute-pressure relief pressure valve of super large control range, includes valve body, actuating mechanism and pneumatic actuator, be equipped with actuating mechanism and pneumatic actuator on the valve body, the both ends of valve body are equipped with two pipes, are equipped with the choke valve on one of them pipe, and another pipe communicates actuating mechanism and valve body to and the pipe of being connected with the choke valve is the valve front conduit, and another pipe is pipe behind the valve, the last admission valve that is equipped with of pneumatic actuator, be equipped with the disk seat in the valve body, be equipped with buffering sealing mechanism in the disk seat, wear to be equipped with the case in the buffering sealing mechanism, be equipped with the valve rod on the case, the valve body corresponds with the junction of two pipes and has seted up the through-hole, still be equipped with supplementary regulation protection mechanism in the valve body, the valve rod overcoat is equipped with assembly devices's uide bushing.

Preferably, supplementary regulation protection mechanism is including fixed internal thread post, adjusting screw, driving lever, return spring and pin rod, wear to be equipped with in the fixed internal thread post with fixed internal thread post screw-thread fit's adjusting screw to extend to in the valve body, adjusting screw's one end is equipped with the driving lever that the slope set up, the one end that adjusting screw was kept away from to the driving lever is equipped with the sealing rubber post, the bonding of sealing rubber post is fixed on the driving lever.

Preferably, a return spring is arranged on the shifting lever, a pin rod penetrates through the return spring, and the shifting lever is movably connected to the valve body through the matching of the return spring and the pin rod.

Preferably, buffering sealing mechanism includes slope sealing ring, slotted hole, spring leaf, rubber spacer, spacing ring piece, fixed guide block, guide slot, spacing inserted block, push pedal and external screw thread piece, set up the slotted hole that a plurality of is cyclic annular distribution in the slope sealing ring, wear out the spring leaf that is C font structure in the slotted hole, be equipped with the rubber spacer in the slope sealing ring, the rubber spacer bonds fixedly with the slope sealing ring.

Preferably, the valve seat is internally provided with a guide groove, a through groove communicated with the guide groove, and a slot which is positioned at the end part of the guide groove and is parallel to the through groove.

Preferably, be equipped with in the guide slot with guide slot size complex spacing inserted block, the one end of spacing inserted block is the trapezium structure, the other end of spacing inserted block is equipped with the elastic ball.

Preferably, an external thread block is arranged in the through groove, and a T-shaped push plate movably connected with the external thread block penetrates through the external thread block.

Preferably, a limit ring block is inserted into the slot, a fixed guide block corresponding to the guide groove one to one is arranged on the limit ring block, and the fixed guide block is fixedly connected with the limit ring block.

Preferably, the assembly devices include a round table-shaped bottom table board and a top table board which are arranged at two ends of the guide sleeve, and a pressing plate which is arranged on the guide sleeve, wherein limit bolts are arranged at two ends of the pressing plate in a penetrating mode, the bottom table board of the guide sleeve is embedded into the valve body and matched with the valve body in size, the pressing plate is worn out of the top table board of the guide sleeve and matched with the inner wall of the pressing plate in size, and the guide sleeve is fixed on the valve body through the matching of the pressing plate and the limit bolts.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model is provided with an auxiliary adjusting and protecting mechanism which can push the adjusting screw to spirally move along the direction of the central axis of the fixed internal thread column, so that the adjusting screw applies a pushing force to one end of the deflector rod, and the other end of the deflector rod takes the pin rod as an axis to push the sealing rubber column to rotate until the sealing rubber column is inserted into the through hole, thereby avoiding the blockage or the corrosion of the through hole caused by the unused micro-pressure reducing valve; the return spring can restore the deflector rod to the initial position through the pin rod, so that the sealing rubber column is separated from the through hole, and the two guide pipes of the micro-pressure reducing valve are normally used; the bottom table board of the guide sleeve can be inserted into the valve body, the pressure plate is sleeved on the top table board of the guide sleeve, and the limiting bolt is connected with the valve body, so that the guide sleeve can be effectively compressed, the positions of the guide sleeve and the valve body can be effectively limited, and the convenience of disassembling and assembling the guide sleeve can be realized;

the utility model is provided with the buffering sealing mechanism, the valve core applies pressure to the inclined sealing ring, the spring piece of the inclined sealing ring provides preliminary buffering for the valve core in advance, the collision strength between the valve core and the inclined sealing ring is reduced, the rubber spacer on the surface of the inclined sealing ring is matched to make up the gap between the inclined sealing ring and the valve core, the valve core and the inclined sealing ring can be separated, the abrasion between the inclined sealing ring and the valve core is reduced, and thus the sealing protection can be effectively provided for the valve core and the valve seat; the elastic ball can push the limiting insertion block to move along the central axis direction of the guide groove until the limiting insertion block is inserted into the inner wall of the fixed guide block of the limiting ring block, and the limiting ring block is detachably connected with the valve seat through the matching of the fixed guide block and the limiting insertion block, so that the position of the limiting ring block is limited, and stable support is provided for the inclined sealing ring; the accessible push pedal is applyed thrust in the inclined plane of spacing inserted block for the tip of push pedal removes along the inclined plane of spacing inserted block, and promotes spacing inserted block and keeps away from fixed guide block, and the compression elasticity ball can be realized demolising spacing ring piece and disk seat, is convenient for maintain or change buffering sealing mechanism's inner assembly.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion B of FIG. 1 according to the present invention.

In the figure: 1. a valve body; 2. an actuator; 3. a conduit; 4. a throttle valve; 5. a pneumatic actuator; 6. an intake valve; 7. a valve stem; 8. an auxiliary adjustment protection mechanism; 801. fixing the internal thread column; 802. adjusting the screw rod; 803. a deflector rod; 804. a return spring; 805. a pin rod; 806. sealing the rubber column; 9. a buffer sealing mechanism; 901. inclining the sealing ring; 902. a slot; 903. a spring plate; 904. a rubber spacer; 905. a limit ring block; 906. fixing a guide block; 907. a guide groove; 908. limiting the inserting block; 909. pushing the plate; 910. an external thread block; 911. an elastic ball; 10. a valve seat; 11. a valve core; 12. a through hole; 13. an assembly mechanism; 1301. a guide sleeve; 1302. a bottom table top; 1303. a top mesa; 1304. pressing a plate; 1305. and a limiting bolt.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1

As shown in fig. 1-2, a micro-pressure reducing valve with an ultra-large adjustment range comprises a valve body 1, an actuator 2 and a pneumatic actuator 5, the actuator 2 and the pneumatic actuator 5 are arranged on the valve body 1, two ends of the valve body 1 are provided with two conduits 3, one conduit 3 is provided with a throttle valve 4, the other conduit 3 communicates the actuator 2 with the valve body 1, the conduit 3 connected with the throttle valve 4 is a front valve conduit, the other conduit 3 is a rear valve conduit, the pneumatic actuator 5 is provided with an air inlet valve 6, a valve seat 10 is arranged in the valve body 1, a buffering sealing mechanism 9 is arranged in the valve seat 10, the buffering sealing mechanism 9 comprises an inclined sealing ring 901, a slotted hole 902, a spring plate 903, a rubber spacer 904, a limit ring block 905, a fixed guide block 906, a guide groove 907, a limit insert 908, a push plate 909 and an external thread block 910, a plurality of slotted holes 902 distributed in an annular shape are arranged in the inclined sealing ring 901, a spring piece 903 in a C-shaped structure penetrates through the slot 902, a rubber spacer 904 is arranged in the inclined sealing ring 901, the rubber spacer 904 is fixedly bonded with the inclined sealing ring 901, the valve core 11 applies pressure to the inclined sealing ring 901, at the moment, the spring piece 903 of the inclined sealing ring 901 provides preliminary buffer for the valve core 11 in advance, the collision strength between the valve core 11 and the inclined sealing ring 901 is reduced, the rubber spacer 904 on the surface of the inclined sealing ring 901 is matched to compensate for the gap between the inclined sealing ring 901 and the valve core 11, the valve core 11 can be separated from the inclined sealing ring 901, the abrasion between the inclined sealing ring 901 and the valve core 11 is reduced, and therefore the valve core 11 and the valve seat 10 can be effectively provided with sealing protection, a guide slot 907 and a through slot communicated with the guide slot 907 and positioned at the end of the guide slot 907 and arranged in parallel to the through the guide slot 907, and a limit insert 908 matched with the guide slot 907 in size is arranged in the guide slot 907, one end of the limit inserting block 908 is in a trapezoid structure, the other end of the limit inserting block 908 is provided with an elastic ball 911, under the action of the elastic ball 911, the limit inserting block 908 can be pushed to move along the central axis direction of the guide groove 907 until the limit inserting block 908 is inserted into the inner wall of the fixed guide block 906 of the limit ring block 905, the limit ring block 905 is detachably connected with the valve seat 10 through the matching of the fixed guide block 906 and the limit inserting block 908, the limit ring block 905 is used for limiting the position of the limit ring block 905 and providing stable support for the inclined seal ring 901, the limit ring block 905 is inserted into the slot, the fixed guide block 906 corresponding to the guide groove 907 one to one is arranged on the limit ring block 905, the fixed guide block 906 is fixedly connected with the limit ring block 905, the external thread block 910 is arranged in the through slot, the T-shaped push plate 909 movably connected with the external thread block 910 penetrates through the external thread block 910, the push plate 909 applies a pushing force to the inclined plane 908 of the limit inserting block, so that the end of the push plate 909 moves along the inclined plane of the limit inserting block 908, and pushes the limit insert 908 away from the fixed guide block 906 and compresses the elastic ball 911, so that the limit ring 905 and the valve seat 10 can be disassembled to facilitate maintenance or replacement of internal components of the buffer sealing mechanism 9, the buffer sealing mechanism 9 is internally provided with the valve core 11 in a penetrating manner, the valve core 11 is provided with the valve rod 7, the valve rod 7 is externally sleeved with the guide sleeve 1301 of the assembly mechanism 13, the assembly mechanism 13 comprises a truncated cone-shaped bottom table 1302 and a top table 1303 which are arranged at two ends of the guide sleeve 1301, and a pressure plate 1304 which is arranged on the guide sleeve 1301, two ends of the pressure plate 1304 are provided with limit bolts 1305 in a penetrating manner, the bottom table 1302 of the guide sleeve 1301 is embedded into the valve body 1 and is matched with the valve body 1 in size, the top table 1303 of the guide sleeve 1301 penetrates through the pressure plate 1304 and is matched with the inner wall of the pressure plate 1304 in size, the guide sleeve 1301 is fixed on the valve body 1 through the matching of the pressure plate 1304 and the limit bolts 1305, the bottom table 1302 of the guide sleeve 1301 can be inserted into the valve body 1, and the pressing plate 1304 is sleeved on the top table surface 1303 of the guide sleeve 1301, the limiting bolt 1305 is connected with the valve body 1, the guide sleeve 1301 can be effectively pressed, the positions of the guide sleeve 1301 and the valve body 1 can be effectively limited, the guide sleeve 1301 can be disassembled and assembled conveniently, and a through hole 12 is correspondingly formed in the joint of the valve body 1 and the two guide pipes 3.

Example II

As shown in fig. 1-2, a micro-pressure reducing valve with an ultra-large adjustment range comprises an auxiliary adjustment protection mechanism 8, the valve body 1 is further provided with the auxiliary adjustment protection mechanism 8, the auxiliary adjustment protection mechanism 8 comprises a fixed internal threaded column 801, an adjustment screw 802, a shift lever 803, a return spring 804 and a pin rod 805, the adjustment screw 802 in threaded fit with the fixed internal threaded column 801 is arranged in the fixed internal threaded column 801 and extends into the valve body 1, one end of the adjustment screw 802 is provided with the shift lever 803 which is arranged in an inclined manner, the shift lever 803 is provided with the return spring 804, the return spring 804 is provided with the pin rod 805, the shift lever 803 is movably connected to the valve body 1 through the cooperation of the return spring 804 and the pin rod 805, under the action of the return spring 804, the shift lever 803 can be restored to an initial position through the pin rod 805, so that the sealing rubber column 806 is separated from a through hole, and two conduits 3 of the micro-pressure reducing valve can be normally used, one end of the shifting rod 803, which is far away from the adjusting screw 802, is provided with a sealing rubber column 806, the sealing rubber column 806 is fixedly bonded on the shifting rod 803, the adjusting screw 802 can be pushed to spirally move along the central axis direction of the fixed internal threaded column 801, so that the adjusting screw 802 applies pushing force to one end of the shifting rod 803, at the moment, the other end of the shifting rod 803 is pushed to rotate the sealing rubber column 806 by taking the pin rod 805 as a shaft until the sealing rubber column 806 is inserted into the through hole 12, and the phenomenon that the through hole 12 is blocked or corroded due to the fact that the micro-pressure reducing valve is not used is avoided.

The working principle of the micro-pressure reducing valve with the ultra-large adjusting range is as follows: firstly, a bottom table 1302 of a guide sleeve 1301 can be inserted into a valve body 1, a pressure plate 1304 is sleeved on a top table 1303 of the guide sleeve 1301, a limiting bolt 1305 is connected with the valve body 1, then, a limiting insert 908 can be pushed to move along the central axis direction of a guide groove 907 through an elastic ball 911 until the limiting insert 908 is inserted into the inner wall of a fixed guide block 906 of a limiting ring block 905, the limiting ring block 905 is detachably connected with a valve seat 10 through the matching of the fixed guide block 906 and the limiting insert 908 and is used for limiting the position of the limiting ring block 905, then, when a micro-pressure reducing valve is in a working state, a valve core 11 applies pressure to an inclined sealing ring 901, at the moment, a spring piece 903 of the inclined sealing ring 901 provides primary buffering for the valve core 11 in advance, and a rubber spacer 904 on the surface of the inclined sealing ring 901 makes up a gap between the inclined sealing ring 901 and the valve core 11;

then, the adjusting screw 802 can be pushed to move spirally along the central axis of the fixed internal threaded column 801, so that the adjusting screw 802 applies a pushing force to one end of the shifting rod 803, and at this time, the other end of the shifting rod 803 is pushed to rotate the sealing rubber column 806 by taking the pin rod 805 as an axis until the sealing rubber column 806 is inserted into the through hole 12, thereby avoiding the blockage or corrosion of the through hole 12 caused by the unused micro-pressure reducing valve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a micro-pressure relief valve of super large control range, includes valve body (1), actuating mechanism (2) and pneumatic actuator (5), its characterized in that: the valve is characterized in that an actuating mechanism (2) and a pneumatic actuating mechanism (5) are arranged on the valve body (1), two guide pipes (3) are arranged at two ends of the valve body (1), a throttling valve (4) is arranged on one guide pipe (3), the other guide pipe (3) is used for communicating the actuating mechanism (2) with the valve body (1), the guide pipe (3) connected with the throttling valve (4) is a front valve guide pipe, the other guide pipe (3) is a rear valve guide pipe, an air inlet valve (6) is arranged on the pneumatic actuating mechanism (5), a valve seat (10) is arranged in the valve body (1), a buffer sealing mechanism (9) is arranged in the valve seat (10), a valve core (11) is arranged in the buffer sealing mechanism (9) in a penetrating manner, a valve rod (7) is arranged on the valve core (11), a through hole (12) is correspondingly formed at the joint of the valve body (1) and the two guide pipes (3), and an auxiliary adjusting and protecting mechanism (8) is further arranged in the valve body (1), the valve rod (7) is sleeved with a guide sleeve (1301) of an assembling mechanism (13).

2. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 1, wherein: supplementary regulation protection machanism (8) are including fixed internal thread post (801), adjusting screw (802), driving lever (803), return spring (804) and pin rod (805), wear to be equipped with in fixed internal thread post (801) with fixed internal thread post (801) screw-thread fit's adjusting screw (802) to extend to in valve body (1), the one end of adjusting screw (802) is equipped with driving lever (803) that the slope set up, the one end that adjusting screw (802) were kept away from in driving lever (803) is equipped with sealed rubber column (806), sealed rubber column (806) bonding is fixed on driving lever (803).

3. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 2, wherein: the shifting rod (803) is provided with a return spring (804), a pin rod (805) penetrates through the return spring (804), and the shifting rod (803) is movably connected to the valve body (1) through the matching of the return spring (804) and the pin rod (805).

4. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 1, wherein: the buffer sealing mechanism (9) comprises an inclined sealing ring (901), a slot hole (902), a spring piece (903), a rubber spacer (904), a limiting ring block (905), a fixed guide block (906), a guide groove (907), a limiting insert block (908), a push plate (909) and an external thread block (910), wherein a plurality of slot holes (902) distributed annularly are formed in the inclined sealing ring (901), the spring piece (903) which is of a C-shaped structure penetrates out of the slot holes (902), the rubber spacer (904) is arranged in the inclined sealing ring (901), and the rubber spacer (904) is fixedly bonded with the inclined sealing ring (901).

5. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 4, wherein: a guide groove (907) and a through groove communicated with the guide groove (907) are formed in the valve seat (10), and the valve seat is located at the end of the guide groove (907) and is provided with an inserting groove which is parallel to the through groove.

6. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 5, wherein: a limiting insertion block (908) matched with the guide groove (907) in size is arranged in the guide groove (907), one end of the limiting insertion block (908) is of a trapezoidal structure, and an elastic ball (911) is arranged at the other end of the limiting insertion block (908).

7. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 5, wherein: an external thread block (910) is arranged in the through groove, and a T-shaped push plate (909) movably connected with the external thread block (910) penetrates through the external thread block (910).

8. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 5, wherein: a limiting ring block (905) is inserted into the slot, fixed guide blocks (906) which correspond to the guide grooves (907) one to one are arranged on the limiting ring block (905), and the fixed guide blocks (906) are fixedly connected with the limiting ring block (905).

9. The micro-pressure reducing valve with the ultra-large adjusting range as claimed in claim 1, wherein: the assembling mechanism (13) comprises a circular truncated cone-shaped bottom table board (1302) and a top table board (1303) which are arranged at two ends of a guide sleeve (1301), and a pressing plate (1304) arranged on the guide sleeve (1301), wherein a limit bolt (1305) is arranged at two ends of the pressing plate (1304) in a penetrating mode, the bottom table board (1302) of the guide sleeve (1301) is embedded into the valve body (1) and is matched with the valve body (1) in size, the top table board (1303) of the guide sleeve (1301) penetrates out of the pressing plate (1304) and is matched with the inner wall of the pressing plate (1304) in size, and the guide sleeve (1301) is fixed on the valve body (1) through the matching of the pressing plate (1304) and the limit bolt (1305).