CN213598641U

CN213598641U - Pilot-operated proportional pressure reducing valve

Info

Publication number: CN213598641U
Application number: CN202021717864.2U
Authority: CN
Inventors: 俞卫
Original assignee: Jiangsu Jiayite Hydraulic Co ltd
Current assignee: JIANGSU JIAYITE HYDRAULIC CO Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-07-02
Anticipated expiration: 2030-08-17

Abstract

The utility model belongs to the technical field of the relief pressure valve, a guide's formula proportional pressure relief valve is disclosed. The pilot-operated proportional pressure reducing valve comprises a first valve body, wherein a valve core is arranged in the first valve body. This guide's formula proportion relief pressure valve, be provided with the shock attenuation telescopic link through the left and right sides in valve body one, fixed connection rectangular plate has seted up the spout on the rectangular plate on the shock attenuation telescopic link, let the case slide in the spout, thereby fixed centre gripping when having realized the case and reciprocated, and the shock attenuation effect has been realized, the life of case has been protected effectively, roof at valve body one has set up the telescopic link, when case rebound, the case can not only be through hydraulic oil lifting upwards, the telescopic link is along with case rebound, the buffering after having realized moving up to the case, the lower surface at the case has set up the spring and has been connected with the shock attenuation board in the lump, buffering when having realized falling to the case effectively, the life of case has been protected.

Description

Pilot-operated proportional pressure reducing valve

Technical Field

The utility model relates to a technical field of relief pressure valve specifically is a guide's formula proportional pressure relief valve.

Background

The pilot-operated pressure reducing valve adopts the opening degree of an opening and closing part in a control valve body to adjust the flow of a medium, reduces the pressure of the medium, adjusts the opening degree of the opening and closing part by means of the action of the pressure behind the valve, keeps the pressure behind the valve within a certain range, keeps the pressure at an outlet within a set range under the condition that the pressure at the inlet is continuously changed, and protects the subsequent life production appliances. The valve of this type should be generally installed horizontally in the pipeline.

In the prior pilot type reducing valve, an internal valve core cannot be well fixed and clamped, so that the valve core of the reducing valve is loosened in the high-power operation process, and the reducing valve is unnecessarily damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guide's formula proportion relief pressure valve, this guide's formula proportion relief pressure valve, effectual fixed centre gripping to the case in the valve body.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a pilot-operated proportional pressure reducing valve comprises a valve body I, wherein a valve core is arranged in the valve body I, the left side and the right side in the valve body I are provided with one end of a damping telescopic rod fixedly arranged in a cavity I, the other ends of the two damping telescopic rods are fixedly connected with one side of a rectangular plate, the opposite side surfaces of the two rectangular plates are respectively provided with a sliding chute, the central position of the inner bottom wall of the valve body I is fixedly connected with a base, the central position of the base is fixedly communicated with the top end of a water pipe, the bottom end of the water pipe extends downwards and is fixedly communicated with an oil inlet I arranged in the base, the lower surfaces of the two sliding chutes are respectively contacted with the upper surface of the base, the left side and the right side of the valve core are respectively connected in the sliding chutes in a sliding manner, the left side and the right side of the lower surface of the valve core, and a circular groove is formed in the valve core, one end of a second spring is fixedly connected to the inner bottom wall of the circular groove, and the other end of the second spring is fixedly connected with a baffle plate arranged at the upper end of the first valve body.

Preferably, the number of the first springs is six, the three springs are fixedly connected between the valve core and the damping plate in a group, and the damping plate is made of carbon spring steel.

Preferably, the lower surface of the first valve body is provided with a damping base, a round convex block is arranged at the center of the damping base, a round groove is formed in the lower surface of the first valve body and in the position corresponding to the round convex block, the round groove is inserted into the round convex block, a rubber layer is arranged in the damping base and is in contact with the outer wall of the first valve body, and the rubber layer is made of silica gel.

Preferably, the left side and the right side of the inner top wall of the valve body I are fixedly connected with one end of a telescopic rod, and the other end of the telescopic rod is fixedly connected with the upper surface of the valve core.

Preferably, the left side of the first valve body is provided with two first oil ports, the right side of the first valve body is provided with a second oil inlet, the upper surface of the first valve body is fixedly connected with a second valve body through a support frame, and the left side of the second valve body is provided with a second oil port.

Preferably, the first oil inlet pipe is fixedly communicated with the first oil port, the second oil port and the second oil inlet pipe, one end of the first oil inlet pipe in the second oil inlet pipe extends inwards into the first valve body, one end of the first oil inlet pipe in the first oil port extends inwards into the first valve body, one end of the first oil inlet pipe in the second oil port extends inwards into the second valve body, and the other ends of the first three oil inlet pipes are fixedly communicated with each other through the second oil inlet pipe.

Preferably, two sealing sleeves are arranged in the first oil port, the second oil inlet and the second oil port, and the first oil inlet pipes are all sleeved in the sealing sleeves.

By adopting the technical scheme, the beneficial effects of the utility model are that:

1. this guide's formula proportion relief pressure valve, be provided with the shock attenuation telescopic link through the left and right sides in valve body one, fixed connection rectangular plate has seted up the spout on the rectangular plate on the shock attenuation telescopic link, let the case slide in the spout, thereby fixed centre gripping when having realized the case and reciprocated, and the shock attenuation effect has been realized, the life of case has been protected effectively, roof at valve body one has set up the telescopic link, when case rebound, the case can not only be through hydraulic oil lifting upwards, the telescopic link is along with case rebound, the buffering after having realized moving up to the case, the lower surface at the case has set up the spring and has been connected with the shock attenuation board in the lump, buffering when having realized falling to the case effectively, the life of case has been protected.

2. According to the pilot-operated proportional pressure reducing valve, the damping base is arranged on the lower surface of the first valve body, irregular vibration can be generated when the pressure reducing valve works, and the first valve body is wrapped by the rubber layer in the damping base, so that the vibration amplitude of the first valve body is effectively reduced.

3. According to the pilot-operated proportional pressure reducing valve, the sealing sleeve is sleeved in each oil inlet pipe, so that leakage caused by seepage of hydraulic oil or water through the oil inlet pipe when the pressure reducing valve works is effectively avoided.

Drawings

FIG. 1 is a schematic view of a half-section structure of the present invention;

FIG. 2 is a schematic top view of the valve body of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: the damping valve comprises a valve body I, a valve core 2, a damping telescopic rod 3, a rectangular plate 4, a sliding chute 5, a base 6, a spring I7, a damping plate 8, a circular groove 9, a spring II 10, a damping base 11, a circular convex block 12, a circular concave block 13, a telescopic rod 14, a hydraulic fluid port I15, a hydraulic fluid port II 16, a valve body II 17, an oil inlet pipe I18, an oil inlet pipe II 19, a sealing sleeve 20, a water pipe 21 and a rubber layer 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a pilot-operated proportional pressure reducing valve comprises a valve body I1, wherein a valve core 2 is arranged in the valve body I1, the left side and the right side in the valve body I1 are provided with one end of a cavity I, which is fixedly provided with a damping telescopic rod 3, the other ends of the two damping telescopic rods 3 are fixedly connected with one side of a rectangular plate 4, the opposite sides of the two rectangular plates 4 are respectively provided with a chute 5, the central position of the inner bottom wall of the valve body I1 is fixedly connected with a base 6, the central position of the base 6 is fixedly communicated with the top end of a water pipe 21, the bottom end of the water pipe 21 extends downwards and is fixedly communicated with an oil inlet I arranged in the base 6, the lower surfaces of the two chutes 5 are respectively contacted with the upper surface of the base 6, the left side and the right side of the valve core 2 are respectively connected in the chutes 5 in a sliding manner, the left side and the, the number of the springs I7 is six, three springs I are fixedly connected between the valve core 2 and the damping plate 8 in a group, the damping plate 8 is made of carbon spring steel, the damping plate 8 is in contact with the base 6, a circular groove 9 is formed in the valve core 2, one end of a spring II 10 is fixedly connected to the inner bottom wall of the circular groove 9, the other end of the spring II 10 is fixedly connected with a baffle plate arranged at the upper end of the valve body I1, the damping base 11 is arranged on the lower surface of the valve body I1, a circular bump 12 is arranged at the central position of the damping base 11, a circular groove 13 is formed in the lower surface of the valve body I1 and corresponds to the circular bump 12, the circular groove 13 is inserted into the circular bump 12, a rubber layer 22 is arranged in the damping base 11, the rubber layer 22 is in contact with the outer wall of the valve body I1, the rubber layer 22 is made of, the other end of the telescopic rod 14 is fixedly connected with the upper surface of the valve core 2, the left side of the valve body I1 is provided with two oil ports I15, the right side of the valve body I1 is provided with an oil inlet II, the upper surface of the valve body I1 is fixedly connected with a valve body II 17 through a support frame, the left side of the valve body II 17 is provided with an oil port II 16, the two oil ports I15, the oil port II 16 and the oil inlet II are fixedly communicated with an oil inlet pipe I18, and one end of the first oil inlet pipe 18 in the second oil inlet extends inwards into the first valve body 1, one end of the first oil inlet pipe 18 in the first oil port 15 extends inwards into the first valve body 1, one end of the first oil inlet pipe 18 in the second oil port 16 extends inwards into the second valve body 17, the other ends of the three first oil inlet pipes 18 are fixedly communicated through the second oil inlet pipes 19, sealing sleeves 20 are arranged in the two first oil ports 15, the second oil inlet pipes and the second oil port 16, and the first oil inlet pipes 18 are all sleeved in the sealing sleeves 20. When the pilot-operated proportional pressure reducing valve works, the left side and the right side in the valve body I1 are provided with the damping telescopic rods 3, the rectangular plate 4 is fixedly connected to the damping telescopic rods 3, the sliding grooves 5 are formed in the rectangular plate 4, the valve core 2 slides in the sliding grooves 5, so that the fixed clamping when the valve core 2 moves up and down is realized, the damping effect is realized, the service life of the valve core 2 is effectively protected, the top wall of the valve body I1 is provided with the telescopic rods 14, when the valve core 2 moves upwards, the valve core 2 cannot be lifted upwards only through hydraulic oil, the telescopic rods 14 move upwards along with the valve core 2, the buffer after the valve core 2 moves upwards is realized, the lower surface of the valve core 2 is provided with the spring I7 and the damping plate 8, the buffer when the valve core 2 descends is effectively realized, the service life of the valve core 2 is protected, the damping base 11 is arranged on, when the pressure reducing valve works, irregular vibration can be generated, the valve body 1 is wrapped by the rubber layer 22 in the damping base 11, the vibration amplitude of the valve body 1 is effectively reduced, the sealing sleeve 20 is sleeved in each oil inlet pipe, and leakage caused by seepage of hydraulic oil or water through the oil inlet pipes is effectively avoided when the pressure reducing valve works.

The working principle is as follows: when the pilot-operated pressure reducing valve works, water or hydraulic oil flows inwards through the second oil inlet, when the pressure is enough, the hydraulic oil passes through the first oil inlet inflow pipe 7, the first oil port 15 and the second oil port 16 in sequence and is matched with the sealing sleeve 20 to complete sealing, a plug (not shown in the figure) in the second valve body 17 is jacked by the flowing of the hydraulic oil, the valve core 2 is jacked upwards by the hydraulic oil to realize the operation of the pressure reducing valve, when the valve core 2 moves upwards, the left side and the right side of the valve core 2 slide in the sliding grooves 5 in the rectangular plate 4 together with the telescopic rod 14 on the inner top wall of the valve body 1, thereby realizing fixed clamping, realizing the damping effect on the valve core 2 through the damping telescopic rod 3 behind the rectangular plate 4, when the valve core 2 descends, the carbon black I7 on the lower surface of the valve core 2 contacts with the damping plate 8 and the base 6 on the inner bottom wall of the valve body I1 to complete damping and buffering on the valve core 2, and the external damping base 11 performs damping and buffering on the vibration of the valve body 1.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pilot-operated proportional pressure reducing valve comprises a valve body I (1), and is characterized in that: a valve core (2) is arranged in the valve body I (1), one end of a damping telescopic rod (3) is fixedly arranged in each cavity I at the left side and the right side in the valve body I (1), the other ends of the two damping telescopic rods (3) are fixedly connected with one side of a rectangular plate (4), sliding chutes (5) are formed in opposite side surfaces of the two rectangular plates (4), a base (6) is fixedly connected to the central position of the inner bottom wall of the valve body I (1), the central position of the base (6) is fixedly communicated with the top end of a water pipe (21), the bottom end of the water pipe (21) extends downwards and is fixedly communicated with an oil inlet arranged in the base (6), the lower surfaces of the two sliding chutes (5) are contacted with the upper surface of the base (6), the left side and the right side of the valve core (2) are slidably connected in the sliding chutes (5), one ends of springs (7) are fixedly connected to the left side and the right side of the lower surface of the, and the other end of the first spring (7) is fixedly connected with a damping plate (8), the damping plate (8) is contacted with the base (6), a circular groove (9) is formed in the valve core (2), the inner bottom wall of the circular groove (9) is fixedly connected with one end of a second spring (10), and the other end of the second spring (10) is fixedly connected with a baffle plate arranged at the upper end of the first valve body (1).

2. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: the number of the springs I (7) is six, the springs I are fixedly connected between the valve core (2) and the damping plate (8) in a group, and the damping plate (8) is made of carbon spring steel.

3. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: the lower surface of the first valve body (1) is provided with a damping base (11), a round convex block (12) is arranged at the central position of the damping base (11), a round groove (13) is formed in the lower surface of the first valve body (1) and corresponds to the round convex block (12), the round groove (13) is inserted into the round convex block (12), a rubber layer (22) is arranged in the damping base (11), the rubber layer (22) is in contact with the outer wall of the first valve body (1), and the rubber layer (22) is made of silica gel.

4. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: the left side and the right side of the inner top wall of the valve body I (1) are fixedly connected with one end of a telescopic rod (14), and the other end of the telescopic rod (14) is fixedly connected with the upper surface of the valve core (2).

5. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: the left side of the first valve body (1) is provided with two first oil ports (15), the right side of the first valve body (1) is provided with a second oil inlet, the upper surface of the first valve body (1) is fixedly connected with a second valve body (17) through a supporting frame, and the left side of the second valve body (17) is provided with a second oil port (16).

6. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: the two oil inlets I (15), the oil inlets II (16) and the oil inlets II are fixedly communicated with one oil inlet pipe I (18), one end of the oil inlet pipe I (18) in the oil inlets II extends inwards into the valve body I (1), one end of the oil inlet pipe I (18) in the oil inlets I (15) extends inwards into the valve body I (1), one end of the oil inlet pipe I (18) in the oil inlets II (16) extends inwards into the valve body II (17), and the other ends of the three oil inlet pipes I (18) are fixedly communicated through the oil inlet pipe II (19).

7. The pilot-operated proportional pressure reducing valve as defined in claim 1, wherein: sealing sleeves (20) are arranged in the two oil ports I (15), the oil inlet II and the oil port II (16), and the oil inlet pipes I (18) are sleeved in the sealing sleeves (20).